fix dependencies (#535)

Keep the 'v' in app version so we are able to query to GitHub release api to fetch its
release information

.dockerignore

@@ -25,3 +25,6 @@ docker-compose*
 db
 assets
 wireguard-ui
+
+# Examples
+examples

.gitattributes

@@ -0,0 +1 @@
+*.html linguist-detectable=false

.github/stale.yml

@@ -1,19 +1,57 @@
-# Number of days of inactivity before an issue becomes stale
+# Configuration for probot-stale - https://github.com/probot/stale
+
+# Number of days of inactivity before an Issue or Pull Request becomes stale
 daysUntilStale: 60
-# Number of days of inactivity before a stale issue is closed
+
+# Number of days of inactivity before an Issue or Pull Request with the stale label is closed.
+# Set to false to disable. If disabled, issues still need to be closed manually, but will remain marked as stale.
 daysUntilClose: 7
-# Issues with these labels will never be considered stale
+
-exemptLabels:
+# Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
-  - pinned
+onlyLabels: []
-  - security
+
-  - enhancement
+# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
-  - feature request
+exemptLabels: []
-# Label to use when marking an issue as stale
+
-staleLabel: wontfix
+# Set to true to ignore issues in a project (defaults to false)
-# Comment to post when marking an issue as stale. Set to `false` to disable
+exemptProjects: false
+
+# Set to true to ignore issues in a milestone (defaults to false)
+exemptMilestones: false
+
+# Set to true to ignore issues with an assignee (defaults to false)
+exemptAssignees: false
+
+# Label to use when marking as stale
+staleLabel: stale
+
+# Comment to post when marking as stale. Set to `false` to disable
 markComment: >
   This issue has been automatically marked as stale because it has not had
   recent activity. It will be closed if no further activity occurs. Thank you
   for your contributions.
-# Comment to post when closing a stale issue. Set to `false` to disable
+
-closeComment: true
+# Comment to post when closing a stale Issue or Pull Request.
+# closeComment: >
+#   Your comment here.
+
+# Limit the number of actions per hour, from 1-30. Default is 30
+limitPerRun: 30
+
+# Limit to only `issues` or `pulls`
+only: issues
+
+# Optionally, specify configuration settings that are specific to just 'issues' or 'pulls':
+# pulls:
+#   daysUntilStale: 30
+#   markComment: >
+#     This pull request has been automatically marked as stale because it has not had
+#     recent activity. It will be closed if no further activity occurs. Thank you
+#     for your contributions.
+
+issues:
+ exemptLabels:
+   - enhancement
+   - feature request
+   - documentation
+   - bug

.github/workflows/docker-build.yml

@@ -0,0 +1,97 @@
+name: Build container images
+
+on:
+  push:
+    branches:
+      - "master"
+    tags:
+      - "*"
+
+jobs:
+  build-image:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+
+      # set environment
+      - name: Set BUILD_TIME env
+        run: echo "BUILD_TIME=$(date)" >> $GITHUB_ENV
+
+      - name: Set GIT_COMMIT env
+        run: echo "GIT_COMMIT=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+
+      - name: Environment printer
+        uses: managedkaos/print-env@v1.0
+
+      - name: Prepare image tags
+        id: image-tags
+        run: |
+          base=ngoduykhanh/wireguard-ui
+          app_version=dev
+
+          ## Set git tag as image tag
+          ##
+          if [[ '${{ github.ref }}' == *"refs/tags/"* ]]; then
+            github_tag="${GITHUB_REF#refs/*/}"
+            app_version=${github_tag}
+
+            SEMVER_REGEX="^v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(\\-[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?(\\+[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?$"
+            if [[ "$github_tag" =~ $SEMVER_REGEX ]]; then
+              github_tag=$(echo "${github_tag}" | sed 's/^v//')
+            fi
+
+            container_images=$(cat <<END_HEREDOC
+          ${base}:${github_tag}
+          END_HEREDOC
+          )
+          
+          ## Set 'latest' image tag if 'main' or 'master'
+          ## branch is pushed
+          ##
+          elif [[ '${{ github.ref }}' == 'refs/heads/master' || '${{ github.ref }}' == 'refs/heads/main' ]]; then
+            container_images=$(cat <<END_HEREDOC
+          ${base}:latest
+          END_HEREDOC
+            )
+          fi
+
+          ## Print tags for debugging purpose
+          ##
+          echo "[INFO] container_images: ${container_images}"
+          
+          ## Set container_images output
+          ##
+          echo "container_images<<EOF" >> $GITHUB_OUTPUT
+          echo "$container_images" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          
+          ## Set APP_VERSION env
+          #
+          echo "APP_VERSION=${app_version}" >> $GITHUB_ENV
+
+      # set up docker and build images
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          context: .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          tags: ${{ steps.image-tags.outputs.container_images }}
+          build-args: |
+            APP_VERSION=${{ env.APP_VERSION }}
+            BUILD_TIME=${{ env.BUILD_TIME }}
+            GIT_COMMIT=${{ env.GIT_COMMIT }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/lint.yml

@@ -0,0 +1,31 @@
+name: Lint
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+permissions:
+  contents: read
+  pull-requests: read
+  checks: write
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-22.04
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v3
+        with:
+          go-version: "1.21"
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.54

.github/workflows/release.yml

@@ -7,8 +7,9 @@ on:
 jobs:
   releases-matrix:
     name: Release Go Binary
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
         # build and publish in parallel: linux/386, linux/amd64, darwin/386, darwin/amd64
         goos: [linux, freebsd, darwin]
@@ -24,36 +25,28 @@ jobs:
           - 7
     steps:
     # get the source code
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     # set environment
     - name: Set APP_VERSION env
-      run: echo ::set-env name=APP_VERSION::$(echo ${GITHUB_REF} | rev | cut -d'/' -f 1 | rev )
+      run: echo "APP_VERSION=$(echo ${GITHUB_REF} | rev | cut -d'/' -f 1 | rev )" >> $GITHUB_ENV
     - name: Set BUILD_TIME env
-      run: echo ::set-env name=BUILD_TIME::$(date)
+      run: echo "BUILD_TIME=$(date)" >> $GITHUB_ENV
     - name: Environment Printer
       uses: managedkaos/print-env@v1.0
 
     # setup node
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v4
       with:
-        node-version: '10.x'
+        node-version: '20'
         registry-url: 'https://registry.npmjs.org'
 
-    # prepare assets for go rice
+    # prepare assets
     - name: Prepare assets
       run: |
         chmod +x ./prepare_assets.sh
         ./prepare_assets.sh
 
-    # get go rice tool
-    - name: Get go rice tool
-      run: go get github.com/GeertJohan/go.rice/rice
-
-    # run go rice embed
-    - name: Run go rice embed
-      run: ${HOME}/go/bin/rice embed-go
-
     # build and make the releases
     - name: Build and make the releases
       uses: wangyoucao577/go-release-action@master
@@ -61,7 +54,8 @@ jobs:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         goos: ${{ matrix.goos }}
         goarch: ${{ matrix.goarch }}
-        goversion: "https://dl.google.com/go/go1.14.2.linux-amd64.tar.gz"
+        goversion: "https://dl.google.com/go/go1.21.5.linux-amd64.tar.gz"
+        pre_command: export CGO_ENABLED=0
         binary_name: "wireguard-ui"
         build_flags: -v
         ldflags: -X "main.appVersion=${{ env.APP_VERSION }}" -X "main.buildTime=${{ env.BUILD_TIME }}" -X main.gitCommit=${{ github.sha }} -X main.gitRef=${{ github.ref }}

.gitignore

@@ -14,10 +14,17 @@ wireguard-ui
 
 # Dependency directories and files (remove the comment below to include it)
 vendor/
-assets/
+assets/*
+!assets/.gitkeep
 node_modules/
-rice-box.go
 
 # IDEs
 .vscode
 .idea
+
+# Vim
+.*.sw[op]
+
+# Examples
+examples/docker-compose/config
+examples/docker-compose/db

.golangci.yml

@@ -0,0 +1,26 @@
+run:
+  timeout: 5m
+  skip-dirs:
+    - .github
+    - hack
+    - vendor
+linters:
+  disable-all: true
+  enable:
+    - gofmt
+    - revive
+    - goimports
+    - govet
+    - unused
+    - whitespace
+    - misspell
+  fast: false
+linters-settings:
+  gofmt:
+    simplify: false
+  revive:
+    rules:
+      - name: exported
+        disabled: true
+issues:
+  exclude-use-default: false

CONTRIBUTING.md

@@ -0,0 +1,67 @@
+# Contributing Guidelines
+
+Thank you for your interest in contributing to my project. Whether it's a bug report, new feature, correction, or additional
+documentation, I greatly value feedback and contributions from my community.
+
+Please read through this document before submitting any issues or pull requests to ensure I have all the necessary
+information to effectively respond to your bug report or contribution.
+
+## Reporting Bugs/Feature Requests
+
+I welcome you to use the GitHub issue tracker to report bugs or suggest features.
+
+When filing an issue, please check existing open, or recently closed, issues to make sure somebody else hasn't already
+reported the issue. Please try to include as much information as you can. Details like these are incredibly useful:
+
+- A reproducible test case or series of steps
+- The version of my code being used
+- Any modifications you've made relevant to the bug
+- Anything unusual about your environment or deployment
+
+## Contributing via Pull Requests
+
+### Discussion of New Features
+Before initiating the implementation of a new feature, I encourage contributors to open a discussion by creating a new GitHub issue. This allows me to provide feedback, share insights, and ensure alignment with the project's direction and save your time.
+
+#### Process for Discussing New Features:
+
+1. **Create an Issue:**
+   - Go to the "Issues" tab in the repository.
+   - Click on "New Issue."
+   - Clearly describe the proposed feature, its purpose, and potential benefits.
+
+2. **Engage in Discussion:**
+   - Respond promptly to comments and feedback from the community.
+   - Be open to adjusting the feature based on collaborative input.
+
+3. **Consensus Building:**
+   - Strive to reach a consensus on the proposed feature.
+   - Ensure alignment with the overall project vision.
+
+### Bug Fixes and Improvements
+
+For bug fixes, documentation improvements, and general enhancements, feel free to submit a pull request directly.
+
+#### Pull Request Guidelines:
+
+1. **Fork the Repository:**
+   - Fork the repository to your GitHub account.
+
+2. **Create a Branch:**
+   - Create a new branch for your changes.
+
+3. **Make Changes:**
+   - Make your changes and ensure they adhere to coding standards.
+
+4. **Submit a Pull Request:**
+   - Submit a pull request to the main repository.
+
+5. **Engage in Review:**
+   - Be responsive to feedback and address any requested changes.
+
+6. **Merge Process:**
+   - Once approved, your changes will be merged into the main branch.
+
+## Licensing
+
+See the [LICENSE](LICENSE) file for my project's licensing.

Dockerfile

@@ -1,6 +1,14 @@
 # Build stage
-FROM golang:1.14.2-alpine3.11 as builder
+FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.21-alpine3.19 AS builder
-LABEL maintainer="Khanh Ngo <k@ndk.name"
+LABEL maintainer="Khanh Ngo <k@ndk.name>"
+
+ARG BUILDPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+ARG APP_VERSION=dev
+ARG BUILD_TIME
+ARG GIT_COMMIT
+
 ARG BUILD_DEPENDENCIES="npm \
     yarn"
 
@@ -9,8 +17,11 @@ RUN apk add --update --no-cache ${BUILD_DEPENDENCIES}
 
 WORKDIR /build
 
-# Add sources
+# Add dependencies
-COPY . /build
+COPY go.mod /build
+COPY go.sum /build
+COPY package.json /build
+COPY yarn.lock /build
 
 # Prepare assets
 RUN yarn install --pure-lockfile --production && \
@@ -35,34 +46,32 @@ RUN mkdir -p assets/plugins && \
     /build/node_modules/jquery-tags-input/ \
     assets/plugins/
 
+# Add sources
+COPY . /build
+
 # Move custom assets
 RUN cp -r /build/custom/ assets/
 
-# Get go modules and build tool
-RUN go mod download && \
-    go get github.com/GeertJohan/go.rice/rice
-
 # Build
-RUN rice embed-go && \
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -ldflags="-X 'main.appVersion=${APP_VERSION}' -X 'main.buildTime=${BUILD_TIME}' -X 'main.gitCommit=${GIT_COMMIT}'" -a -o wg-ui .
-    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o wg-ui .
 
 # Release stage
-FROM alpine:3.11
+FROM alpine:3.19
 
 RUN addgroup -S wgui && \
     adduser -S -D -G wgui wgui
 
-RUN apk --no-cache add ca-certificates
+RUN apk --no-cache add ca-certificates wireguard-tools jq iptables
 
 WORKDIR /app
 
 RUN mkdir -p db
 
 # Copy binary files
-COPY --from=builder --chown=wgui:wgui /build/wg-ui /app
+COPY --from=builder --chown=wgui:wgui /build/wg-ui .
-
 RUN chmod +x wg-ui
+COPY init.sh .
+RUN chmod +x init.sh
 
 EXPOSE 5000/tcp
-HEALTHCHECK CMD ["wget","--output-document=-","--quiet","--tries=1","http://127.0.0.1:5000/login"]
+ENTRYPOINT ["./init.sh"]
-ENTRYPOINT ["./wg-ui"]

README.md

@@ -5,39 +5,119 @@
 A web user interface to manage your WireGuard setup.
 
 ## Features
+
 - Friendly UI
 - Authentication
-- Manage extra client's information (name, email, etc)
+- Manage extra client information (name, email, etc.)
-- Retrieve configs using QR code / file
+- Retrieve client config using QR code / file / email / Telegram
+
+![wireguard-ui 0.3.7](https://user-images.githubusercontent.com/37958026/177041280-e3e7ca16-d4cf-4e95-9920-68af15e780dd.png)
 
 ## Run WireGuard-UI
 
-Default username and password are `admin`.
+> ⚠️The default username and password are `admin`. Please change it to secure your setup.
-
-### Using docker compose
-
-You can take a look at this example of [docker-compose.yml](https://github.com/ngoduykhanh/wireguard-ui/blob/master/docker-compose.yaml). Please adjust volume mount points to work with your setup. Then run it like below:
-
-```
-docker-compose up
-```
 
 ### Using binary file
 
-Download the binary file from the release and run it with command:
+Download the binary file from the release page and run it directly on the host machine
 
 ```
 ./wireguard-ui
 ```
 
-## Auto restart WireGuard daemon
+### Using docker compose
-WireGuard-UI only takes care of configuration generation. You can use systemd to watch for the changes and restart the service. Following is an example:
 
-### systemd
+The [examples/docker-compose](examples/docker-compose) folder contains example docker-compose files.
-
+Choose the example which fits you the most, adjust the configuration for your needs, then run it like below:
-Create /etc/systemd/system/wgui.service
 
 ```
+docker-compose up
+```
+
+## Environment Variables
+
+| Variable                      | Description                                                                                                                                                                                                                                                                         | Default                            |
+|-------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------|
+| `BASE_PATH`                   | Set this variable if you run wireguard-ui under a subpath of your reverse proxy virtual host (e.g. /wireguard)                                                                                                                                                                      | N/A                                |
+| `BIND_ADDRESS`                | The addresses that can access to the web interface and the port, use unix:///abspath/to/file.socket for unix domain socket.                                                                                                                                                         | 0.0.0.0:80                         |
+| `SESSION_SECRET`              | The secret key used to encrypt the session cookies. Set this to a random value                                                                                                                                                                                                      | N/A                                |
+| `SESSION_SECRET_FILE`         | Optional filepath for the secret key used to encrypt the session cookies. Leave `SESSION_SECRET` blank to take effect                                                                                                                                                               | N/A                                |
+| `SESSION_MAX_DURATION`        | Max time in days a remembered session is refreshed and valid. Non-refreshed session is valid for 7 days max, regardless of this setting.                                                                                                                                            | 90                                 |
+| `SUBNET_RANGES`               | The list of address subdivision ranges. Format: `SR Name:10.0.1.0/24; SR2:10.0.2.0/24,10.0.3.0/24` Each CIDR must be inside one of the server interfaces.                                                                                                                           | N/A                                |
+| `WGUI_USERNAME`               | The username for the login page. Used for db initialization only                                                                                                                                                                                                                    | `admin`                            |
+| `WGUI_PASSWORD`               | The password for the user on the login page. Will be hashed automatically. Used for db initialization only                                                                                                                                                                          | `admin`                            |
+| `WGUI_PASSWORD_FILE`          | Optional filepath for the user login password. Will be hashed automatically. Used for db initialization only. Leave `WGUI_PASSWORD` blank to take effect                                                                                                                            | N/A                                |
+| `WGUI_PASSWORD_HASH`          | The password hash for the user on the login page. (alternative to `WGUI_PASSWORD`). Used for db initialization only                                                                                                                                                                 | N/A                                |
+| `WGUI_PASSWORD_HASH_FILE`     | Optional filepath for the user login password hash. (alternative to `WGUI_PASSWORD_FILE`). Used for db initialization only. Leave `WGUI_PASSWORD_HASH` blank to take effect                                                                                                         | N/A                                |
+| `WGUI_ENDPOINT_ADDRESS`       | The default endpoint address used in global settings where clients should connect to. The endpoint can contain a port as well, useful when you are listening internally on the `WGUI_SERVER_LISTEN_PORT` port, but you forward on another port (ex 9000). Ex: myvpn.dyndns.com:9000 | Resolved to your public ip address |
+| `WGUI_FAVICON_FILE_PATH`      | The file path used as website favicon                                                                                                                                                                                                                                               | Embedded WireGuard logo            |
+| `WGUI_DNS`                    | The default DNS servers (comma-separated-list) used in the global settings                                                                                                                                                                                                          | `1.1.1.1`                          |
+| `WGUI_MTU`                    | The default MTU used in global settings                                                                                                                                                                                                                                             | `1450`                             |
+| `WGUI_PERSISTENT_KEEPALIVE`   | The default persistent keepalive for WireGuard in global settings                                                                                                                                                                                                                   | `15`                               |
+| `WGUI_FIREWALL_MARK`          | The default WireGuard firewall mark                                                                                                                                                                                                                                                 | `0xca6c`  (51820)                  |
+| `WGUI_TABLE`                  | The default WireGuard table value settings                                                                                                                                                                                                                                          | `auto`                             |
+| `WGUI_CONFIG_FILE_PATH`       | The default WireGuard config file path used in global settings                                                                                                                                                                                                                      | `/etc/wireguard/wg0.conf`          |
+| `WGUI_LOG_LEVEL`              | The default log level. Possible values: `DEBUG`, `INFO`, `WARN`, `ERROR`, `OFF`                                                                                                                                                                                                     | `INFO`                             |
+| `WG_CONF_TEMPLATE`            | The custom `wg.conf` config file template. Please refer to our [default template](https://github.com/ngoduykhanh/wireguard-ui/blob/master/templates/wg.conf)                                                                                                                        | N/A                                |
+| `EMAIL_FROM_ADDRESS`          | The sender email address                                                                                                                                                                                                                                                            | N/A                                |
+| `EMAIL_FROM_NAME`             | The sender name                                                                                                                                                                                                                                                                     | `WireGuard UI`                     |
+| `SENDGRID_API_KEY`            | The SendGrid api key                                                                                                                                                                                                                                                                | N/A                                |
+| `SENDGRID_API_KEY_FILE`       | Optional filepath for the SendGrid api key. Leave `SENDGRID_API_KEY` blank to take effect                                                                                                                                                                                           | N/A                                |
+| `SMTP_HOSTNAME`               | The SMTP IP address or hostname                                                                                                                                                                                                                                                     | `127.0.0.1`                        |
+| `SMTP_PORT`                   | The SMTP port                                                                                                                                                                                                                                                                       | `25`                               |
+| `SMTP_USERNAME`               | The SMTP username                                                                                                                                                                                                                                                                   | N/A                                |
+| `SMTP_PASSWORD`               | The SMTP user password                                                                                                                                                                                                                                                              | N/A                                |
+| `SMTP_PASSWORD_FILE`          | Optional filepath for the SMTP user password. Leave `SMTP_PASSWORD` blank to take effect                                                                                                                                                                                            | N/A                                |
+| `SMTP_AUTH_TYPE`              | The SMTP authentication type. Possible values: `PLAIN`, `LOGIN`, `NONE`                                                                                                                                                                                                             | `NONE`                             |
+| `SMTP_ENCRYPTION`             | The encryption method. Possible values: `NONE`, `SSL`, `SSLTLS`, `TLS`, `STARTTLS`                                                                                                                                                                                                  | `STARTTLS`                         |
+| `SMTP_HELO`                   | Hostname to use for the HELO message. smtp-relay.gmail.com needs this set to anything but `localhost`                                                                                                                                                                               | `localhost`                        |
+| `TELEGRAM_TOKEN`              | Telegram bot token for distributing configs to clients                                                                                                                                                                                                                              | N/A                                |
+| `TELEGRAM_ALLOW_CONF_REQUEST` | Allow users to get configs from the bot by sending a message                                                                                                                                                                                                                        | `false`                            |
+| `TELEGRAM_FLOOD_WAIT`         | Time in minutes before the next conf request is processed                                                                                                                                                                                                                           | `60`                               |
+
+### Defaults for server configuration
+
+These environment variables are used to control the default server settings used when initializing the database.
+
+| Variable                          | Description                                                                                   | Default         |
+|-----------------------------------|-----------------------------------------------------------------------------------------------|-----------------|
+| `WGUI_SERVER_INTERFACE_ADDRESSES` | The default interface addresses (comma-separated-list) for the WireGuard server configuration | `10.252.1.0/24` |
+| `WGUI_SERVER_LISTEN_PORT`         | The default server listen port                                                                | `51820`         |
+| `WGUI_SERVER_POST_UP_SCRIPT`      | The default server post-up script                                                             | N/A             |
+| `WGUI_SERVER_POST_DOWN_SCRIPT`    | The default server post-down script                                                           | N/A             |
+
+### Defaults for new clients
+
+These environment variables are used to set the defaults used in `New Client` dialog.
+
+| Variable                                    | Description                                                                                     | Default     |
+|---------------------------------------------|-------------------------------------------------------------------------------------------------|-------------|
+| `WGUI_DEFAULT_CLIENT_ALLOWED_IPS`           | Comma-separated-list of CIDRs for the `Allowed IPs` field. (default )                           | `0.0.0.0/0` |
+| `WGUI_DEFAULT_CLIENT_EXTRA_ALLOWED_IPS`     | Comma-separated-list of CIDRs for the `Extra Allowed IPs` field. (default empty)                | N/A         |
+| `WGUI_DEFAULT_CLIENT_USE_SERVER_DNS`        | Boolean value [`0`, `f`, `F`, `false`, `False`, `FALSE`, `1`, `t`, `T`, `true`, `True`, `TRUE`] | `true`      |
+| `WGUI_DEFAULT_CLIENT_ENABLE_AFTER_CREATION` | Boolean value [`0`, `f`, `F`, `false`, `False`, `FALSE`, `1`, `t`, `T`, `true`, `True`, `TRUE`] | `true`      |
+
+### Docker only
+
+These environment variables only apply to the docker container.
+
+| Variable              | Description                                                   | Default |
+|-----------------------|---------------------------------------------------------------|---------|
+| `WGUI_MANAGE_START`   | Start/stop WireGuard when the container is started/stopped    | `false` |
+| `WGUI_MANAGE_RESTART` | Auto restart WireGuard when we Apply Config changes in the UI | `false` |
+
+## Auto restart WireGuard daemon
+
+WireGuard-UI only takes care of configuration generation. You can use systemd to watch for the changes and restart the
+service. Following is an example:
+
+### Using systemd
+
+Create `/etc/systemd/system/wgui.service`
+
+```bash
+cd /etc/systemd/system/
+cat << EOF > wgui.service
 [Unit]
 Description=Restart WireGuard
 After=network.target
@@ -48,11 +128,14 @@ ExecStart=/usr/bin/systemctl restart wg-quick@wg0.service
 
 [Install]
 RequiredBy=wgui.path
+EOF
 ```
 
-Create /etc/systemd/system/wgui.path
+Create `/etc/systemd/system/wgui.path`
 
-```
+```bash
+cd /etc/systemd/system/
+cat << EOF > wgui.path
 [Unit]
 Description=Watch /etc/wireguard/wg0.conf for changes
 
@@ -61,81 +144,103 @@ PathModified=/etc/wireguard/wg0.conf
 
 [Install]
 WantedBy=multi-user.target
+EOF
 ```
 
 Apply it
 
-```
+```sh
 systemctl enable wgui.{path,service}
 systemctl start wgui.{path,service}
 ```
 
-### openrc
+### Using openrc
 
-Create and `chmod +x` /usr/local/bin/wgui
+Create `/usr/local/bin/wgui` file and make it executable
-```
+
+```sh
+cd /usr/local/bin/
+cat << EOF > wgui
 #!/bin/sh
 wg-quick down wg0
 wg-quick up wg0
+EOF
+chmod +x wgui
 ```
 
-Create and `chmod +x` /etc/init.d/wgui
+Create `/etc/init.d/wgui` file and make it executable
-```
+
+```sh
+cd /etc/init.d/
+cat << EOF > wgui
 #!/sbin/openrc-run
 
 command=/sbin/inotifyd
 command_args="/usr/local/bin/wgui /etc/wireguard/wg0.conf:w"
 pidfile=/run/${RC_SVCNAME}.pid
 command_background=yes
+EOF
+chmod +x wgui
 ```
 
 Apply it
 
-```
+```sh
 rc-service wgui start
 rc-update add wgui default
 ```
 
+### Using Docker
+
+Set `WGUI_MANAGE_RESTART=true` to manage Wireguard interface restarts.
+Using `WGUI_MANAGE_START=true` can also replace the function of `wg-quick@wg0` service, to start Wireguard at boot, by
+running the container with `restart: unless-stopped`. These settings can also pick up changes to Wireguard Config File
+Path, after restarting the container. Please make sure you have `--cap-add=NET_ADMIN` in your container config to make
+this feature work.
+
 ## Build
 
 ### Build docker image
 
 Go to the project root directory and run the following command:
 
+```sh
+docker build --build-arg=GIT_COMMIT=$(git rev-parse --short HEAD) -t wireguard-ui .
 ```
-docker build -t wireguard-ui .
+
+or
+
+```sh
+docker compose build --build-arg=GIT_COMMIT=$(git rev-parse --short HEAD)
 ```
 
+:information_source: A container image is available on [Docker Hub](https://hub.docker.com/r/ngoduykhanh/wireguard-ui)
+which you can pull and use
+
+```
+docker pull ngoduykhanh/wireguard-ui
+````
+
 ### Build binary file
 
 Prepare the assets directory
 
-```
+```sh
 ./prepare_assets.sh
 ```
 
-Then you can embed resources by generating Go source code
+Then build your executable
 
-```
+```sh
-rice embed-go
 go build -o wireguard-ui
 ```
 
-Or, append resources to executable as zip file
-
-```
-go build -o wireguard-ui
-rice append --exec wireguard-ui
-```
-
-## Screenshot
-
-![wireguard-ui](https://user-images.githubusercontent.com/6447444/80270680-76adf980-86e4-11ea-8ca1-9237f0dfa249.png)
-
 ## License
+
 MIT. See [LICENSE](https://github.com/ngoduykhanh/wireguard-ui/blob/master/LICENSE).
 
 ## Support
+
 If you like the project and want to support it, you can *buy me a coffee* ☕
 
 <a href="https://www.buymeacoffee.com/khanhngo" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/default-orange.png" alt="Buy Me A Coffee" height="41" width="174"></a>

custom/js/helper.js

@@ -1,5 +1,20 @@
 function renderClientList(data) {
     $.each(data, function(index, obj) {
+        // render telegram button
+        let telegramButton = ''
+        if (obj.Client.telegram_userid) {
+            telegramButton =    `<div class="btn-group">      
+                                    <button type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal"
+                                        data-target="#modal_telegram_client" data-clientid="${obj.Client.id}"
+                                        data-clientname="${obj.Client.name}">Telegram</button>
+                                </div>`
+        }
+
+        let telegramHtml = "";
+        if (obj.Client.telegram_userid && obj.Client.telegram_userid.length > 0) {
+            telegramHtml = `<span class="info-box-text" style="display: none"><i class="fas fa-tguserid"></i>${obj.Client.telegram_userid}</span>`
+        }
+
         // render client status css tag style
         let clientStatusHtml = '>'
         if (obj.Client.enabled) {
@@ -18,36 +33,69 @@ function renderClientList(data) {
             allowedIpsHtml += `<small class="badge badge-secondary">${obj}</small>&nbsp;`;
         })
 
+        let subnetRangesString = "";
+        if (obj.Client.subnet_ranges && obj.Client.subnet_ranges.length > 0) {
+            subnetRangesString = obj.Client.subnet_ranges.join(',')
+        }
+
+        let additionalNotesHtml = "";
+        if (obj.Client.additional_notes && obj.Client.additional_notes.length > 0) {
+            additionalNotesHtml = `<span class="info-box-text" style="display: none"><i class="fas fa-additional_notes"></i>${obj.Client.additional_notes.toUpperCase()}</span>`
+        }
+
         // render client html content
-        let html = `<div class="col-sm-6" id="client_${obj.Client.id}">
+        let html = `<div class="col-sm-6 col-md-6 col-lg-4" id="client_${obj.Client.id}">
                         <div class="info-box">
                             <div class="overlay" id="paused_${obj.Client.id}"` + clientStatusHtml
                                 + `<i class="paused-client fas fa-3x fa-play" onclick="resumeClient('${obj.Client.id}')"></i>
                             </div>
-                            <img src="${obj.QRCode}" />
+                            <div class="info-box-content" style="overflow: hidden">
-                            <div class="info-box-content">
+                                <div class="btn-group">
+                                    <a href="download?clientid=${obj.Client.id}" class="btn btn-outline-primary btn-sm">Download</a>
+                                </div>
                                 <div class="btn-group">      
-                                    <button onclick="location.href='/download?clientid=${obj.Client.id}'" type="button"
-                                        class="btn btn-outline-success btn-sm">Download</button>
                                     <button type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal"
+                                        data-target="#modal_qr_client" data-clientid="${obj.Client.id}"
+                                        data-clientname="${obj.Client.name}" ${obj.QRCode != "" ? '' : ' disabled'}>QR code</button>
+                                </div>
+                                <div class="btn-group">      
+                                    <button type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal"
+                                        data-target="#modal_email_client" data-clientid="${obj.Client.id}"
+                                        data-clientname="${obj.Client.name}">Email</button>
+                                </div>
+                                ${telegramButton}
+                                <div class="btn-group">
+                                    <button type="button" class="btn btn-outline-danger btn-sm">More</button>
+                                    <button type="button" class="btn btn-outline-danger btn-sm dropdown-toggle dropdown-icon" 
+                                        data-toggle="dropdown">
+                                    </button>
+                                    <div class="dropdown-menu" role="menu">
+                                        <a class="dropdown-item" href="#" data-toggle="modal"
                                         data-target="#modal_edit_client" data-clientid="${obj.Client.id}"
-                                        data-clientname="${obj.Client.name}">Edit</button>
+                                        data-clientname="${obj.Client.name}">Edit</a>
-                                    <button type="button" class="btn btn-outline-warning btn-sm" data-toggle="modal"
+                                        <a class="dropdown-item" href="#" data-toggle="modal"
                                         data-target="#modal_pause_client" data-clientid="${obj.Client.id}"
-                                        data-clientname="${obj.Client.name}">Disable</button>
+                                        data-clientname="${obj.Client.name}">Disable</a>
-                                    <button type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"
+                                        <a class="dropdown-item" href="#" data-toggle="modal"
                                         data-target="#modal_remove_client" data-clientid="${obj.Client.id}"
-                                        data-clientname="${obj.Client.name}">Remove</button>
+                                        data-clientname="${obj.Client.name}">Delete</a>
+                                    </div>
                                 </div>
                                 <hr>
                                 <span class="info-box-text"><i class="fas fa-user"></i> ${obj.Client.name}</span>
+                                <span class="info-box-text" style="display: none"><i class="fas fa-key"></i> ${obj.Client.public_key}</span>
+                                <span class="info-box-text" style="display: none"><i class="fas fa-subnetrange"></i>${subnetRangesString}</span>
+                                ${telegramHtml}
+                                ${additionalNotesHtml}
                                 <span class="info-box-text"><i class="fas fa-envelope"></i> ${obj.Client.email}</span>
                                 <span class="info-box-text"><i class="fas fa-clock"></i>
-                                    ${obj.Client.created_at}</span>
+                                    ${prettyDateTime(obj.Client.created_at)}</span>
                                 <span class="info-box-text"><i class="fas fa-history"></i>
-                                    ${obj.Client.updated_at}</span>
+                                    ${prettyDateTime(obj.Client.updated_at)}</span>
                                 <span class="info-box-text"><i class="fas fa-server" style="${obj.Client.use_server_dns ? "opacity: 1.0" : "opacity: 0.5"}"></i>
                                     ${obj.Client.use_server_dns ? 'DNS enabled' : 'DNS disabled'}</span>
+                                <span class="info-box-text"><i class="fas fa-file"></i>
+                                    ${obj.Client.additional_notes}</span>
                                 <span class="info-box-text"><strong>IP Allocation</strong></span>`
                                 + allocatedIpsHtml
                                 + `<span class="info-box-text"><strong>Allowed IPs</strong></span>`
@@ -60,3 +108,38 @@ function renderClientList(data) {
         $('#client-list').append(html);
     });
 }
+
+function renderUserList(data) {
+    $.each(data, function(index, obj) {
+        let clientStatusHtml = '>'
+
+        // render user html content
+        let html = `<div class="col-sm-6 col-md-6 col-lg-4" id="user_${obj.username}">
+                        <div class="info-box">
+                            <div class="info-box-content">
+                                <div class="btn-group">
+                                     <button type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal" data-target="#modal_edit_user" data-username="${obj.username}">Edit</button>
+                                </div>
+                                <div class="btn-group">
+                                    <button type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"
+                                        data-target="#modal_remove_user" data-username="${obj.username}">Delete</button>
+                                </div>
+                                <hr>
+                                <span class="info-box-text"><i class="fas fa-user"></i> ${obj.username}</span>
+                                <span class="info-box-text"><i class="fas fa-terminal"></i> ${obj.admin? 'Administrator':'Manager'}</span>
+                                </div>
+                        </div>
+                    </div>`
+
+        // add the user html elements to the list
+        $('#users-list').append(html);
+    });
+}
+
+
+function prettyDateTime(timeStr) {
+    const dt = new Date(timeStr);
+    const offsetMs = dt.getTimezoneOffset() * 60 * 1000;
+    const dateLocal = new Date(dt.getTime() - offsetMs);
+    return dateLocal.toISOString().slice(0, 19).replace(/-/g, "/").replace("T", " ");
+}

custom/js/wake_on_lan_hosts.js

@@ -0,0 +1,210 @@
+var base_url = jQuery(".brand-link").attr('href');
+if (base_url.substring(base_url.length - 1, base_url.length) != "/")
+    base_url = base_url + "/";
+
+
+const wake_on_lan_new_template = '<div class="col-sm-4" id="{{ .Id }}">\n' +
+    '\t<div class="info-box">\n' +
+    '\t\t<div class="info-box-content">\n' +
+    '\t\t\t<div class="btn-group">\n' +
+    '\t\t\t\t<button type="button" class="btn btn-outline-success btn-sm"\n' +
+    '\t\t\t\t\t\tdata-mac-address="{{ .MacAddress }}">Wake On\n' +
+    '\t\t\t\t</button>\n' +
+    '\t\t\t\t<button type="button"\n' +
+    '\t\t\t\t\t\tclass="btn btn-outline-primary btn-sm btn_modify_wake_on_lan_host"\n' +
+    '\t\t\t\t\t\tdata-toggle="modal" data-target="#modal_wake_on_lan_host"\n' +
+    '\t\t\t\t\t\tdata-name="{{ .Name }}" data-mac-address="{{ .MacAddress }}">Edit\n' +
+    '\t\t\t\t</button>\n' +
+    '\t\t\t\t<button type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"\n' +
+    '\t\t\t\t\t\tdata-target="#modal_remove_wake_on_lan_host"\n' +
+    '\t\t\t\t\t\tdata-mac-address="{{ .MacAddress }}">Remove\n' +
+    '\t\t\t\t</button>\n' +
+    '\t\t\t</div>\n' +
+    '\t\t\t<hr>\n' +
+    '\t\t\t<span class="info-box-text"><i class="fas fa-address-card"></i> <span class="name">{{ .Name }}</span></span>\n' +
+    '\t\t\t<span class="info-box-text"><i class="fas fa-ethernet"></i> <span class="mac-address">{{ .MacAddress }}</span></span>\n' +
+    '\t\t\t<span class="info-box-text"><i class="fas fa-clock"></i> <span class="latest-used">Unused</span></span>\n' +
+    '\t\t</div>\n' +
+    '\t</div>\n' +
+    '</div>';
+
+jQuery(function ($) {
+    $.validator.addMethod('mac', function (value, element) {
+        return this.optional(element) || /^([0-9A-F]{2}[:]){5}([0-9A-F]{2})$/.test(value);
+    }, 'Please enter a valid MAC Address.(uppercase letters and numbers, : only) ex: 00:AB:12:EF:DD:AA');
+});
+
+jQuery.each(["put", "delete"], function (i, method) {
+    jQuery[method] = function (url, data, callback, type) {
+        if (jQuery.isFunction(data)) {
+            type = type || callback;
+            callback = data;
+            data = undefined;
+        }
+
+        return jQuery.ajax({
+            url: url,
+            type: method,
+            dataType: type,
+            data: data,
+            success: callback,
+            contentType: 'application/json'
+        });
+    };
+});
+
+jQuery(function ($) {
+    let newHostHtml = '<div class="col-sm-2 offset-md-4" style=" text-align: right;"><button style="" id="btn_new_wake_on_lan_host" type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal" data-target="#modal_wake_on_lan_host"><i class="nav-icon fas fa-plus"></i> New Host</button></div>';
+    $('h1').parents(".row").append(newHostHtml);
+});
+
+jQuery(function ($) {
+    $('.btn-outline-success').click(function () {
+        const $this = $(this);
+        $.put(base_url + 'wake_on_lan_host/' + $this.data('mac-address'), function (result) {
+            $this.parents('.info-box').find('.latest-used').text(prettyDateTime(result));
+        });
+    });
+});
+
+jQuery(function ($) {
+    let $modal_remove_wake_on_lan_host = $('#modal_remove_wake_on_lan_host');
+    let $remove_client_confirm = $('#remove_wake_on_host_confirm');
+
+    $modal_remove_wake_on_lan_host.on('show.bs.modal', function (event) {
+        const $btn = $(event.relatedTarget);
+        const $modal = $(this);
+
+        const $editBtn = $btn.parents('.btn-group').find('.btn_modify_wake_on_lan_host');
+        $modal.find('.modal-body').text("You are about to remove Wake On Lan Host " + $editBtn.data('name'));
+        $remove_client_confirm.val($editBtn.data('mac-address'));
+    })
+
+    $remove_client_confirm.click(function () {
+        const macAddress = $remove_client_confirm.val().replaceAll(":", "-");
+        $.delete(base_url + 'wake_on_lan_host/' + macAddress);
+        $('#' + macAddress).remove();
+
+        $modal_remove_wake_on_lan_host.modal('hide');
+    });
+});
+
+jQuery(function ($) {
+    $('.latest-used').each(function () {
+        const $this = $(this);
+        const timeText = $this.text().trim();
+        try {
+            if (timeText != "Unused") {
+                $this.text(prettyDateTime(timeText));
+            }
+        } catch (ex) {
+            console.log(timeText);
+            throw ex;
+        }
+    });
+});
+
+jQuery(function ($) {
+    let $modal_wake_on_lan_host = $("#modal_wake_on_lan_host");
+    let $name = $('#frm_wake_on_lan_host_name');
+    let $macAddress = $('#frm_wake_on_lan_host_mac_address');
+    let $oldMacAddress = $('#frm_wake_on_lan_host_old_mac_address');
+    let $contentRow = $('.content .row');
+    let $frm_wake_on_lan_host = $("#frm_wake_on_lan_host");
+
+    // https://jqueryvalidation.org/
+    let validator = $frm_wake_on_lan_host.validate({
+        submitHandler: function () {
+            let data = {
+                name: $name.val(),
+                mac_address: $macAddress.val().toUpperCase(),
+                old_mac_address: $oldMacAddress.val().toUpperCase()
+            };
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: base_url + 'wake_on_lan_host',
+                dataType: 'json',
+                contentType: "application/json",
+                data: JSON.stringify(data),
+                success: function (response) {
+                    /** @type {string} */
+                    let oldMacAddress = $oldMacAddress.val().toUpperCase();
+
+                    if (oldMacAddress != '') {
+                        let macAddress = response.MacAddress;
+                        let name = response.Name;
+
+                        let $container = $('#' + oldMacAddress.replaceAll(":", "-"));
+                        if (macAddress != oldMacAddress) {
+                            $container.attr('id', macAddress.replaceAll(":", "-"));
+                            $container.find('.mac-address').text(macAddress);
+                            $container.find('[data-mac-address]').data('mac-address', macAddress);
+                        }
+
+                        $container.find('.name').text(name);
+                        $container.find('[data-name]').data('name', name);
+                    } else {
+                        const $template = $(
+                            wake_on_lan_new_template
+                                .replace(/{{ .Id }}/g, response.MacAddress.replaceAll(":", "-").toUpperCase())
+                                .replace(/{{ .MacAddress }}/g, response.MacAddress.toUpperCase())
+                                .replace(/{{ .Name }}/g, response.Name)
+                        );
+
+                        $contentRow.append($template);
+                    }
+                    $modal_wake_on_lan_host.modal('hide');
+                    toastr.success('Wake on Lan Host Save successfully');
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+
+                    if (typeof (console) != 'undefined')
+                        console.log(exception);
+                }
+            });
+
+            return false;
+        },
+        rules: {
+            name: {
+                required: true,
+            },
+            mac_address: {
+                required: true,
+                mac: true,
+            }
+        },
+        messages: {
+            name: {
+                required: "Please enter a name"
+            },
+            mac_address: {
+                required: "Please enter a Mac Address"
+            }
+        },
+        errorElement: 'span',
+        errorPlacement: function (error, element) {
+            error.addClass('invalid-feedback');
+            element.closest('.form-group').append(error);
+        },
+        highlight: function (element) {
+            $(element).addClass('is-invalid');
+        },
+        unhighlight: function (element) {
+            $(element).removeClass('is-invalid');
+        }
+    });
+
+    $modal_wake_on_lan_host.on('show.bs.modal', function (e) {
+        const $btn = $(e.relatedTarget);
+        validator.resetForm();
+        $macAddress.removeClass('is-invalid');
+
+        $name.val($btn.data('name'));
+        $macAddress.val($btn.data('mac-address'));
+        $oldMacAddress.val($btn.data('mac-address'));
+    });
+});

docker-compose.yaml

@@ -1,11 +1,23 @@
-version: '3'
+version: "3"
 
 services:
   wg:
-    image: ngoduykhanh/wireguard-ui:latest
+    build: .
+    #image: ngoduykhanh/wireguard-ui:latest
     container_name: wgui
-    ports:
+    cap_add:
-      - 5000:5000
+      - NET_ADMIN
+    network_mode: host
+    environment:
+      - SENDGRID_API_KEY
+      - EMAIL_FROM_ADDRESS
+      - EMAIL_FROM_NAME
+      - SESSION_SECRET
+      - WGUI_USERNAME=alpha
+      - WGUI_PASSWORD=this-unusual-password
+      - WG_CONF_TEMPLATE
+      - WGUI_MANAGE_START=false
+      - WGUI_MANAGE_RESTART=false
     logging:
       driver: json-file
       options:

emailer/interface.go

@@ -0,0 +1,10 @@
+package emailer
+
+type Attachment struct {
+	Name string
+	Data []byte
+}
+
+type Emailer interface {
+	Send(toName string, to string, subject string, content string, attachments []Attachment) error
+}

emailer/sendgrid.go

@@ -0,0 +1,54 @@
+package emailer
+
+import (
+	"encoding/base64"
+
+	"github.com/sendgrid/sendgrid-go"
+	"github.com/sendgrid/sendgrid-go/helpers/mail"
+)
+
+type SendgridApiMail struct {
+	apiKey   string
+	fromName string
+	from     string
+}
+
+func NewSendgridApiMail(apiKey, fromName, from string) *SendgridApiMail {
+	ans := SendgridApiMail{apiKey: apiKey, fromName: fromName, from: from}
+	return &ans
+}
+
+func (o *SendgridApiMail) Send(toName string, to string, subject string, content string, attachments []Attachment) error {
+	m := mail.NewV3Mail()
+
+	mailFrom := mail.NewEmail(o.fromName, o.from)
+	mailContent := mail.NewContent("text/html", content)
+	mailTo := mail.NewEmail(toName, to)
+
+	m.SetFrom(mailFrom)
+	m.AddContent(mailContent)
+
+	personalization := mail.NewPersonalization()
+	personalization.AddTos(mailTo)
+	personalization.Subject = subject
+
+	m.AddPersonalizations(personalization)
+
+	toAdd := make([]*mail.Attachment, 0, len(attachments))
+	for i := range attachments {
+		var att mail.Attachment
+		encoded := base64.StdEncoding.EncodeToString(attachments[i].Data)
+		att.SetContent(encoded)
+		att.SetType("text/plain")
+		att.SetFilename(attachments[i].Name)
+		att.SetDisposition("attachment")
+		toAdd = append(toAdd, &att)
+	}
+
+	m.AddAttachment(toAdd...)
+	request := sendgrid.GetRequest(o.apiKey, "/v3/mail/send", "https://api.sendgrid.com")
+	request.Method = "POST"
+	request.Body = mail.GetRequestBody(m)
+	_, err := sendgrid.API(request)
+	return err
+}

emailer/smtp.go

@@ -0,0 +1,100 @@
+package emailer
+
+import (
+	"crypto/tls"
+	"fmt"
+	"strings"
+	"time"
+
+	mail "github.com/xhit/go-simple-mail/v2"
+)
+
+type SmtpMail struct {
+	hostname   string
+	port       int
+	username   string
+	password   string
+	smtpHelo   string
+	authType   mail.AuthType
+	encryption mail.Encryption
+	noTLSCheck bool
+	fromName   string
+	from       string
+}
+
+func authType(authType string) mail.AuthType {
+	switch strings.ToUpper(authType) {
+	case "PLAIN":
+		return mail.AuthPlain
+	case "LOGIN":
+		return mail.AuthLogin
+	default:
+		return mail.AuthNone
+	}
+}
+
+func encryptionType(encryptionType string) mail.Encryption {
+	switch strings.ToUpper(encryptionType) {
+	case "NONE":
+		return mail.EncryptionNone
+	case "SSL":
+		return mail.EncryptionSSL
+	case "SSLTLS":
+		return mail.EncryptionSSLTLS
+	case "TLS":
+		return mail.EncryptionTLS
+	default:
+		return mail.EncryptionSTARTTLS
+	}
+}
+
+func NewSmtpMail(hostname string, port int, username string, password string, SmtpHelo string, noTLSCheck bool, auth string, fromName, from string, encryption string) *SmtpMail {
+	ans := SmtpMail{hostname: hostname, port: port, username: username, password: password, smtpHelo: SmtpHelo, noTLSCheck: noTLSCheck, fromName: fromName, from: from, authType: authType(auth), encryption: encryptionType(encryption)}
+	return &ans
+}
+
+func addressField(address string, name string) string {
+	if name == "" {
+		return address
+	}
+	return fmt.Sprintf("%s <%s>", name, address)
+}
+
+func (o *SmtpMail) Send(toName string, to string, subject string, content string, attachments []Attachment) error {
+	server := mail.NewSMTPClient()
+
+	server.Host = o.hostname
+	server.Port = o.port
+	server.Authentication = o.authType
+	server.Username = o.username
+	server.Password = o.password
+	server.Helo = o.smtpHelo
+	server.Encryption = o.encryption
+	server.KeepAlive = false
+	server.ConnectTimeout = 10 * time.Second
+	server.SendTimeout = 10 * time.Second
+
+	if o.noTLSCheck {
+		server.TLSConfig = &tls.Config{InsecureSkipVerify: true}
+	}
+
+	smtpClient, err := server.Connect()
+
+	if err != nil {
+		return err
+	}
+
+	email := mail.NewMSG()
+	email.SetFrom(addressField(o.from, o.fromName)).
+		AddTo(addressField(to, toName)).
+		SetSubject(subject).
+		SetBody(mail.TextHTML, content)
+
+	for _, v := range attachments {
+		email.Attach(&mail.File{Name: v.Name, Data: v.Data})
+	}
+
+	err = email.Send(smtpClient)
+
+	return err
+}

examples/docker-compose/README.md

@@ -0,0 +1,30 @@
+## Prerequisites
+
+### Kernel Module
+
+Depending on if the Wireguard kernel module is available on your system you have more or less choices which example to use.
+
+You can check if the kernel modules are available via the following command:
+```shell
+modprobe wireguard
+```
+
+If the command exits successfully and doesn't print an error the kernel modules are available.
+If it does error, you either have to install them manually (or activate if deactivated) or use an userspace implementation.
+For an example of an userspace implementation, see _borigtun_.
+
+### Credentials
+
+Username and password for all examples is `admin` by default.
+For security reasons it's highly recommended to change them before the first startup.
+
+## Examples
+- **[system](system.yml)**
+
+  If you have Wireguard already installed on your system and only want to run the UI in docker this might fit the most.
+- **[linuxserver](linuxserver.yml)**
+
+  If you have the Wireguard kernel modules installed (included in the mainline kernel since version 5.6) but want it running inside of docker, this might fit the most.
+- **[boringtun](boringtun.yml)**
+
+  If Wireguard kernel modules are not available, you can switch to an userspace implementation like [boringtun](https://github.com/cloudflare/boringtun).

examples/docker-compose/boringtun.yml

@@ -0,0 +1,43 @@
+version: "3"
+
+services:
+  boringtun:
+    image: ghcr.io/ntkme/boringtun:edge
+    command:
+      - wg0
+    container_name: boringtun
+    # use the network of the 'wireguard-ui' service. this enables to show active clients in the status page
+    network_mode: service:wireguard-ui
+    cap_add:
+      - NET_ADMIN
+    volumes:
+      - /dev/net/tun:/dev/net/tun
+      - ./config:/etc/wireguard
+
+  wireguard-ui:
+    image: ngoduykhanh/wireguard-ui:latest
+    container_name: wireguard-ui
+    cap_add:
+      - NET_ADMIN
+    environment:
+      - SENDGRID_API_KEY
+      - EMAIL_FROM_ADDRESS
+      - EMAIL_FROM_NAME
+      - SESSION_SECRET
+      - WGUI_USERNAME=admin
+      - WGUI_PASSWORD=admin
+      - WG_CONF_TEMPLATE
+      - WGUI_MANAGE_START=true
+      - WGUI_MANAGE_RESTART=true
+    logging:
+      driver: json-file
+      options:
+        max-size: 50m
+    volumes:
+      - ./db:/app/db
+      - ./config:/etc/wireguard
+    ports:
+      # port for wireguard-ui
+      - "5000:5000"
+      # port of the wireguard server. this must be set here as the `boringtun` container joins the network of this container and hasn't its own network over which it could publish the ports
+      - "51820:51820/udp"

examples/docker-compose/linuxserver.yml

@@ -0,0 +1,42 @@
+version: "3"
+
+services:
+  wireguard:
+    image: linuxserver/wireguard:latest
+    container_name: wireguard
+    cap_add:
+      - NET_ADMIN
+    volumes:
+      - ./config:/config
+    ports:
+      # port for wireguard-ui. this must be set here as the `wireguard-ui` container joins the network of this container and hasn't its own network over which it could publish the ports
+      - "5000:5000"
+      # port of the wireguard server
+      - "51820:51820/udp"
+
+  wireguard-ui:
+    image: ngoduykhanh/wireguard-ui:latest
+    container_name: wireguard-ui
+    depends_on:
+      - wireguard
+    cap_add:
+      - NET_ADMIN
+    # use the network of the 'wireguard' service. this enables to show active clients in the status page
+    network_mode: service:wireguard
+    environment:
+      - SENDGRID_API_KEY
+      - EMAIL_FROM_ADDRESS
+      - EMAIL_FROM_NAME
+      - SESSION_SECRET
+      - WGUI_USERNAME=admin
+      - WGUI_PASSWORD=admin
+      - WG_CONF_TEMPLATE
+      - WGUI_MANAGE_START=true
+      - WGUI_MANAGE_RESTART=true
+    logging:
+      driver: json-file
+      options:
+        max-size: 50m
+    volumes:
+      - ./db:/app/db
+      - ./config:/etc/wireguard

examples/docker-compose/system.yml

@@ -0,0 +1,27 @@
+version: "3"
+
+services:
+  wireguard-ui:
+    image: ngoduykhanh/wireguard-ui:latest
+    container_name: wireguard-ui
+    cap_add:
+      - NET_ADMIN
+    # required to show active clients. with this set, you don't need to expose the ui port (5000) anymore
+    network_mode: host
+    environment:
+      - SENDGRID_API_KEY
+      - EMAIL_FROM_ADDRESS
+      - EMAIL_FROM_NAME
+      - SESSION_SECRET
+      - WGUI_USERNAME=admin
+      - WGUI_PASSWORD=admin
+      - WG_CONF_TEMPLATE
+      - WGUI_MANAGE_START=false
+      - WGUI_MANAGE_RESTART=false
+    logging:
+      driver: json-file
+      options:
+        max-size: 50m
+    volumes:
+      - ./db:/app/db
+      - /etc/wireguard:/etc/wireguard

go.mod

@@ -1,21 +1,52 @@
 module github.com/ngoduykhanh/wireguard-ui
 
-go 1.14
+go 1.21
 
 require (
-	github.com/GeertJohan/go.rice v1.0.0
+	github.com/NicoNex/echotron/v3 v3.27.0
-	github.com/glendc/go-external-ip v0.0.0-20170425150139-139229dcdddd
+	github.com/glendc/go-external-ip v0.1.0
-	github.com/go-playground/universal-translator v0.17.0 // indirect
+	github.com/gorilla/sessions v1.2.2
-	github.com/gorilla/sessions v1.2.0
+	github.com/labstack/echo-contrib v0.15.0
-	github.com/jcelliott/lumber v0.0.0-20160324203708-dd349441af25 // indirect
+	github.com/labstack/echo/v4 v4.11.4
-	github.com/labstack/echo-contrib v0.9.0
+	github.com/labstack/gommon v0.4.2
-	github.com/labstack/echo/v4 v4.1.16
+	github.com/rs/xid v1.5.0
-	github.com/labstack/gommon v0.3.0
+	github.com/sabhiram/go-wol v0.0.0-20211224004021-c83b0c2f887d
-	github.com/leodido/go-urn v1.2.0 // indirect
+	github.com/sdomino/scribble v0.0.0-20230717151034-b95d4df19aa8
-	github.com/rs/xid v1.2.1
+	github.com/sendgrid/sendgrid-go v3.14.0+incompatible
-	github.com/sdomino/scribble v0.0.0-20191024200645-4116320640ba
+	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
-	github.com/skip2/go-qrcode v0.0.0-20191027152451-9434209cb086
+	github.com/xhit/go-simple-mail/v2 v2.16.0
-	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20200324154536-ceff61240acf
+	golang.org/x/crypto v0.17.0
-	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
+	golang.org/x/mod v0.14.0
+	//golang.zx2c4.com/wireguard v0.0.20200121 // indirect
+	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20210803171230-4253848d036c
 	gopkg.in/go-playground/validator.v9 v9.31.0
 )
+
+require (
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-test/deep v1.1.0 // indirect
+	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/gorilla/context v1.1.2 // indirect
+	github.com/gorilla/securecookie v1.1.2 // indirect
+	github.com/jcelliott/lumber v0.0.0-20160324203708-dd349441af25 // indirect
+	github.com/josharian/native v1.1.0 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mdlayher/genetlink v1.3.2 // indirect
+	github.com/mdlayher/netlink v1.7.2 // indirect
+	github.com/mdlayher/socket v0.5.0 // indirect
+	github.com/sendgrid/rest v2.6.9+incompatible // indirect
+	github.com/toorop/go-dkim v0.0.0-20201103131630-e1cd1a0a5208 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasttemplate v1.2.2 // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sync v0.5.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	golang.zx2c4.com/wireguard v0.0.0-20210427022245-097af6e1351b // indirect
+	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
+)

go.sum

@@ -1,185 +1,188 @@
-github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
+github.com/NicoNex/echotron/v3 v3.27.0 h1:iq4BLPO+Dz1JHjh2HPk0D0NldAZSYcAjaOicgYEhUzw=
-github.com/GeertJohan/go.rice v1.0.0 h1:KkI6O9uMaQU3VEKaj01ulavtF7o1fWT7+pk/4voiMLQ=
+github.com/NicoNex/echotron/v3 v3.27.0/go.mod h1:LpP5IyHw0y+DZUZMBgXEDAF9O8feXrQu7w7nlJzzoZI=
-github.com/GeertJohan/go.rice v1.0.0/go.mod h1:eH6gbSOAUv07dQuZVnBmoDP8mgsM1rtixis4Tib9if0=
+github.com/coreos/bbolt v1.3.1-coreos.6.0.20180223184059-4f5275f4ebbf/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
-github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
-github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/appleboy/gofight/v2 v2.1.2/go.mod h1:frW+U1QZEdDgixycTj4CygQ48yLTUhplt43+Wczp3rw=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/casbin/casbin/v2 v2.0.0/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
-github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
-github.com/daaku/go.zipexe v1.0.0 h1:VSOgZtH418pH9L16hC/JrgSNJbbAL26pj7lmD1+CGdY=
-github.com/daaku/go.zipexe v1.0.0/go.mod h1:z8IiR6TsVLEYKwXAoE/I+8ys/sDkgTzSL0CLnGVd57E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
+github.com/glendc/go-external-ip v0.1.0 h1:iX3xQ2Q26atAmLTbd++nUce2P5ht5P4uD4V7caSY/xg=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/glendc/go-external-ip v0.1.0/go.mod h1:CNx312s2FLAJoWNdJWZ2Fpf5O4oLsMFwuYviHjS4uJE=
-github.com/glendc/go-external-ip v0.0.0-20170425150139-139229dcdddd h1:1BzxHapafGJd/XlpMvocLeDBin2EKn90gXv2AQt5sfo=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
-github.com/glendc/go-external-ip v0.0.0-20170425150139-139229dcdddd/go.mod h1:o9OoDQyE1WHvYVUH1FdFapy1/rCZHHq3O5wS4VA83ig=
+github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
-github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
+github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
-github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
+github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
-github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
+github.com/go-test/deep v1.1.0 h1:WOcxcdHcvdgThNXjw0t76K42FXTU7HpNQWHpA2HHNlg=
-github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q=
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-github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
+github.com/golang-jwt/jwt v3.2.2+incompatible h1:IfV12K8xAKAnZqdXVzCZ+TOjboZ2keLg81eXfW3O+oY=
-github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no=
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-github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA=
-github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
-github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
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-github.com/gorilla/sessions v1.1.3/go.mod h1:8KCfur6+4Mqcc6S0FEfKuN15Vl5MgXW92AE8ovaJD0w=
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-github.com/gorilla/sessions v1.2.0 h1:S7P+1Hm5V/AT9cjEcUD5uDaQSX0OE577aCXgoaKpYbQ=
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+golang.zx2c4.com/wireguard/wgctrl v0.0.0-20210803171230-4253848d036c/go.mod h1:+1XihzyZUBJcSc5WO9SwNA7v26puQwOEDwanaxfNXPQ=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/go-playground/assert.v1 v1.2.1 h1:xoYuJVE7KT85PYWrN730RguIQO0ePzVRfFMXadIrXTM=
 gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
 gopkg.in/go-playground/validator.v9 v9.31.0 h1:bmXmP2RSNtFES+bn4uYuHT7iJFJv7Vj+an+ZQdDaD1M=
 gopkg.in/go-playground/validator.v9 v9.31.0/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
-gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

handler/middlewares.go

@@ -0,0 +1,20 @@
+package handler
+
+import (
+	"net/http"
+
+	"github.com/labstack/echo/v4"
+)
+
+// ContentTypeJson checks that the requests have the Content-Type header set to "application/json".
+// This helps against CSRF attacks.
+func ContentTypeJson(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		contentType := c.Request().Header.Get("Content-Type")
+		if contentType != "application/json" {
+			return c.JSON(http.StatusBadRequest, jsonHTTPResponse{false, "Only JSON allowed"})
+		}
+
+		return next(c)
+	}
+}

handler/routes_wake_on_lan.go

@@ -0,0 +1,172 @@
+package handler
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/labstack/echo/v4"
+	"github.com/labstack/gommon/log"
+	"github.com/ngoduykhanh/wireguard-ui/model"
+	"github.com/ngoduykhanh/wireguard-ui/store"
+	"github.com/sabhiram/go-wol/wol"
+)
+
+type WakeOnLanHostSavePayload struct {
+	Name          string `json:"name"`
+	MacAddress    string `json:"mac_address"`
+	OldMacAddress string `json:"old_mac_address"`
+}
+
+func createError(c echo.Context, err error, msg string) error {
+	log.Error(msg, err)
+	return c.JSON(
+		http.StatusInternalServerError,
+		jsonHTTPResponse{
+			false,
+			msg})
+}
+
+func GetWakeOnLanHosts(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		var err error
+
+		hosts, err := db.GetWakeOnLanHosts()
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("wake_on_lan_hosts database error: %s", err))
+		}
+
+		err = c.Render(http.StatusOK, "wake_on_lan_hosts.html", map[string]interface{}{
+			"baseData": model.BaseData{Active: "wake_on_lan_hosts", CurrentUser: currentUser(c), Admin: isAdmin(c)},
+			"hosts":    hosts,
+			"error":    "",
+		})
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("wake_on_lan_hosts.html render error: %s", err))
+		}
+
+		return nil
+	}
+}
+
+func SaveWakeOnLanHost(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		var payload WakeOnLanHostSavePayload
+		err := c.Bind(&payload)
+		if err != nil {
+			log.Error("Wake On Host Save Payload Bind Error: ", err)
+			return c.JSON(http.StatusInternalServerError, payload)
+		}
+
+		var host = model.WakeOnLanHost{
+			MacAddress: payload.MacAddress,
+			Name:       payload.Name,
+		}
+		if len(payload.OldMacAddress) != 0 { // Edit
+			if payload.OldMacAddress != payload.MacAddress { // modified mac address
+				oldHost, err := db.GetWakeOnLanHost(payload.OldMacAddress)
+				if err != nil {
+					return createError(c, err, fmt.Sprintf("Wake On Host Update Err: %s", err))
+				}
+
+				if payload.OldMacAddress != payload.MacAddress {
+					existHost, _ := db.GetWakeOnLanHost(payload.MacAddress)
+					if existHost != nil {
+						return createError(c, nil, "Mac Address already exists.")
+					}
+				}
+
+				err = db.DeleteWakeOnHostLanHost(payload.OldMacAddress)
+				if err != nil {
+					return createError(c, err, fmt.Sprintf("Wake On Host Update Err: %s", err))
+				}
+				host.LatestUsed = oldHost.LatestUsed
+			}
+			err = db.SaveWakeOnLanHost(host)
+		} else { // new
+			existHost, _ := db.GetWakeOnLanHost(payload.MacAddress)
+			if existHost != nil {
+				return createError(c, nil, "Mac Address already exists.")
+			}
+
+			err = db.SaveWakeOnLanHost(host)
+		}
+
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("Wake On Host Save Error: %s", err))
+		}
+
+		return c.JSON(http.StatusOK, host)
+	}
+}
+
+func DeleteWakeOnHost(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		var macAddress = c.Param("mac_address")
+		var host, err = db.GetWakeOnLanHost(macAddress)
+
+		if err != nil {
+			log.Error("Wake On Host Delete Error: ", err)
+			return createError(c, err, fmt.Sprintf("Wake On Host Delete Error: %s", macAddress))
+		}
+
+		err = db.DeleteWakeOnHost(*host)
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("Wake On Host Delete Error: %s", macAddress))
+		}
+
+		return c.JSON(http.StatusOK, nil)
+	}
+}
+
+func WakeOnHost(db store.IStore) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		macAddress := c.Param("mac_address")
+		host, err := db.GetWakeOnLanHost(macAddress)
+
+		now := time.Now().UTC()
+		host.LatestUsed = &now
+		err = db.SaveWakeOnLanHost(*host)
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("Latest Used Update Error: %s", macAddress))
+		}
+
+		magicPacket, err := wol.New(macAddress)
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("Magic Packet Create Error: %s", macAddress))
+		}
+
+		bytes, err := magicPacket.Marshal()
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("Magic Packet Bytestream Error: %s", macAddress))
+		}
+
+		udpAddr, err := net.ResolveUDPAddr("udp", "255.255.255.255:0")
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("ResolveUDPAddr Error: %s", macAddress))
+		}
+
+		// Grab a UDP connection to send our packet of bytes.
+		conn, err := net.DialUDP("udp", nil, udpAddr)
+		if err != nil {
+			return err
+		}
+		defer func(conn *net.UDPConn) {
+			err := conn.Close()
+			if err != nil {
+				log.Error(err)
+			}
+		}(conn)
+
+		n, err := conn.Write(bytes)
+		if err == nil && n != 102 {
+			return createError(c, nil, fmt.Sprintf("magic packet sent was %d bytes (expected 102 bytes sent)", n))
+		}
+		if err != nil {
+			return createError(c, err, fmt.Sprintf("Network Send Error: %s", macAddress))
+		}
+
+		return c.JSON(http.StatusOK, host.LatestUsed)
+	}
+}

handler/session.go

@@ -3,25 +3,192 @@ package handler
 import (
 	"fmt"
 	"net/http"
+	"time"
 
+	"github.com/gorilla/sessions"
 	"github.com/labstack/echo-contrib/session"
 	"github.com/labstack/echo/v4"
 	"github.com/ngoduykhanh/wireguard-ui/util"
 )
 
-// validSession to redirect user to the login page if they are not authenticated or session expired.
+func ValidSession(next echo.HandlerFunc) echo.HandlerFunc {
-func validSession(c echo.Context) {
+	return func(c echo.Context) error {
-	if !util.DisableLogin {
+		if !isValidSession(c) {
-		sess, _ := session.Get("session", c)
-		cookie, err := c.Cookie("session_token")
-		if err != nil || sess.Values["session_token"] != cookie.Value {
 			nextURL := c.Request().URL
-			if nextURL != nil {
+			if nextURL != nil && c.Request().Method == http.MethodGet {
-				c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("/login?next=%s", c.Request().URL))
+				return c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf(util.BasePath+"/login?next=%s", c.Request().URL))
 			} else {
-				c.Redirect(http.StatusTemporaryRedirect, "/login")
+				return c.Redirect(http.StatusTemporaryRedirect, util.BasePath+"/login")
 			}
 		}
+		return next(c)
+	}
+}
+
+// RefreshSession must only be used after ValidSession middleware
+// RefreshSession checks if the session is eligible for the refresh, but doesn't check if it's fully valid
+func RefreshSession(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		doRefreshSession(c)
+		return next(c)
+	}
+}
+
+func NeedsAdmin(next echo.HandlerFunc) echo.HandlerFunc {
+	return func(c echo.Context) error {
+		if !isAdmin(c) {
+			return c.Redirect(http.StatusTemporaryRedirect, util.BasePath+"/")
+		}
+		return next(c)
+	}
+}
+
+func isValidSession(c echo.Context) bool {
+	if util.DisableLogin {
+		return true
+	}
+	sess, _ := session.Get("session", c)
+	cookie, err := c.Cookie("session_token")
+	if err != nil || sess.Values["session_token"] != cookie.Value {
+		return false
+	}
+
+	// Check time bounds
+	createdAt := getCreatedAt(sess)
+	updatedAt := getUpdatedAt(sess)
+	maxAge := getMaxAge(sess)
+	// Temporary session is considered valid within 24h if browser is not closed before
+	// This value is not saved and is used as virtual expiration
+	if maxAge == 0 {
+		maxAge = 86400
+	}
+	expiration := updatedAt + int64(maxAge)
+	now := time.Now().UTC().Unix()
+	if updatedAt > now || expiration < now || createdAt+util.SessionMaxDuration < now {
+		return false
+	}
+
+	// Check if user still exists and unchanged
+	username := fmt.Sprintf("%s", sess.Values["username"])
+	userHash := getUserHash(sess)
+	if uHash, ok := util.DBUsersToCRC32[username]; !ok || userHash != uHash {
+		return false
+	}
+
+	return true
+}
+
+// Refreshes a "remember me" session when the user visits web pages (not API)
+// Session must be valid before calling this function
+// Refresh is performed at most once per 24h
+func doRefreshSession(c echo.Context) {
+	if util.DisableLogin {
+		return
+	}
+
+	sess, _ := session.Get("session", c)
+	maxAge := getMaxAge(sess)
+	if maxAge <= 0 {
+		return
+	}
+
+	oldCookie, err := c.Cookie("session_token")
+	if err != nil || sess.Values["session_token"] != oldCookie.Value {
+		return
+	}
+
+	// Refresh no sooner than 24h
+	createdAt := getCreatedAt(sess)
+	updatedAt := getUpdatedAt(sess)
+	expiration := updatedAt + int64(getMaxAge(sess))
+	now := time.Now().UTC().Unix()
+	if updatedAt > now || expiration < now || now-updatedAt < 86_400 || createdAt+util.SessionMaxDuration < now {
+		return
+	}
+
+	cookiePath := util.GetCookiePath()
+
+	sess.Values["updated_at"] = now
+	sess.Options = &sessions.Options{
+		Path:     cookiePath,
+		MaxAge:   maxAge,
+		HttpOnly: true,
+		SameSite: http.SameSiteLaxMode,
+	}
+	sess.Save(c.Request(), c.Response())
+
+	cookie := new(http.Cookie)
+	cookie.Name = "session_token"
+	cookie.Path = cookiePath
+	cookie.Value = oldCookie.Value
+	cookie.MaxAge = maxAge
+	cookie.HttpOnly = true
+	cookie.SameSite = http.SameSiteLaxMode
+	c.SetCookie(cookie)
+}
+
+// Get time in seconds this session is valid without updating
+func getMaxAge(sess *sessions.Session) int {
+	if util.DisableLogin {
+		return 0
+	}
+
+	maxAge := sess.Values["max_age"]
+
+	switch typedMaxAge := maxAge.(type) {
+	case int:
+		return typedMaxAge
+	default:
+		return 0
+	}
+}
+
+// Get a timestamp in seconds of the time the session was created
+func getCreatedAt(sess *sessions.Session) int64 {
+	if util.DisableLogin {
+		return 0
+	}
+
+	createdAt := sess.Values["created_at"]
+
+	switch typedCreatedAt := createdAt.(type) {
+	case int64:
+		return typedCreatedAt
+	default:
+		return 0
+	}
+}
+
+// Get a timestamp in seconds of the last session update
+func getUpdatedAt(sess *sessions.Session) int64 {
+	if util.DisableLogin {
+		return 0
+	}
+
+	lastUpdate := sess.Values["updated_at"]
+
+	switch typedLastUpdate := lastUpdate.(type) {
+	case int64:
+		return typedLastUpdate
+	default:
+		return 0
+	}
+}
+
+// Get CRC32 of a user at the moment of log in
+// Any changes to user will result in logout of other (not updated) sessions
+func getUserHash(sess *sessions.Session) uint32 {
+	if util.DisableLogin {
+		return 0
+	}
+
+	userHash := sess.Values["user_hash"]
+
+	switch typedUserHash := userHash.(type) {
+	case uint32:
+		return typedUserHash
+	default:
+		return 0
 	}
 }
 
@@ -36,10 +203,47 @@ func currentUser(c echo.Context) string {
 	return username
 }
 
+// isAdmin to get user type: admin or manager
+func isAdmin(c echo.Context) bool {
+	if util.DisableLogin {
+		return true
+	}
+
+	sess, _ := session.Get("session", c)
+	admin := fmt.Sprintf("%t", sess.Values["admin"])
+	return admin == "true"
+}
+
+func setUser(c echo.Context, username string, admin bool, userCRC32 uint32) {
+	sess, _ := session.Get("session", c)
+	sess.Values["username"] = username
+	sess.Values["user_hash"] = userCRC32
+	sess.Values["admin"] = admin
+	sess.Save(c.Request(), c.Response())
+}
+
 // clearSession to remove current session
 func clearSession(c echo.Context) {
 	sess, _ := session.Get("session", c)
 	sess.Values["username"] = ""
+	sess.Values["user_hash"] = 0
+	sess.Values["admin"] = false
 	sess.Values["session_token"] = ""
+	sess.Values["max_age"] = -1
+	sess.Options.MaxAge = -1
 	sess.Save(c.Request(), c.Response())
+
+	cookiePath := util.GetCookiePath()
+
+	cookie, err := c.Cookie("session_token")
+	if err != nil {
+		cookie = new(http.Cookie)
+	}
+
+	cookie.Name = "session_token"
+	cookie.Path = cookiePath
+	cookie.MaxAge = -1
+	cookie.HttpOnly = true
+	cookie.SameSite = http.SameSiteLaxMode
+	c.SetCookie(cookie)
 }

init.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# extract wg config file path, or use default
+conf="$(jq -r .config_file_path db/server/global_settings.json || echo /etc/wireguard/wg0.conf)"
+
+# manage wireguard stop/start with the container
+case $WGUI_MANAGE_START in (1|t|T|true|True|TRUE)
+    wg-quick up "$conf"
+    trap 'wg-quick down "$conf"' SIGTERM # catches container stop
+esac
+
+# manage wireguard restarts
+case $WGUI_MANAGE_RESTART in (1|t|T|true|True|TRUE)
+    [[ -f $conf ]] || touch "$conf" # inotifyd needs file to exist
+    inotifyd - "$conf":w | while read -r event file; do
+        wg-quick down "$file"
+        wg-quick up "$file"
+    done &
+esac
+
+
+./wg-ui &
+wait $!

main.go

@@ -1,93 +1,340 @@
 package main
 
 import (
+	"crypto/sha512"
+	"embed"
 	"flag"
 	"fmt"
+	"io/fs"
+	"net"
 	"net/http"
+	"os"
+	"strings"
+	"syscall"
 	"time"
 
-	rice "github.com/GeertJohan/go.rice"
 	"github.com/labstack/echo/v4"
+	"github.com/labstack/gommon/log"
+	"github.com/ngoduykhanh/wireguard-ui/store"
+	"github.com/ngoduykhanh/wireguard-ui/telegram"
+
+	"github.com/ngoduykhanh/wireguard-ui/emailer"
 	"github.com/ngoduykhanh/wireguard-ui/handler"
 	"github.com/ngoduykhanh/wireguard-ui/router"
+	"github.com/ngoduykhanh/wireguard-ui/store/jsondb"
 	"github.com/ngoduykhanh/wireguard-ui/util"
 )
 
-// command-line banner information
 var (
+	// command-line banner information
 	appVersion = "development"
 	gitCommit  = "N/A"
 	gitRef     = "N/A"
 	buildTime  = fmt.Sprintf(time.Now().UTC().Format("01-02-2006 15:04:05"))
+	// configuration variables
+	flagDisableLogin             = false
+	flagBindAddress              = "0.0.0.0:5000"
+	flagSmtpHostname             = "127.0.0.1"
+	flagSmtpPort                 = 25
+	flagSmtpUsername             string
+	flagSmtpPassword             string
+	flagSmtpAuthType             = "NONE"
+	flagSmtpNoTLSCheck           = false
+	flagSmtpEncryption           = "STARTTLS"
+	flagSmtpHelo                 = "localhost"
+	flagSendgridApiKey           string
+	flagEmailFrom                string
+	flagEmailFromName            = "WireGuard UI"
+	flagTelegramToken            string
+	flagTelegramAllowConfRequest = false
+	flagTelegramFloodWait        = 60
+	flagSessionSecret            = util.RandomString(32)
+	flagSessionMaxDuration       = 90
+	flagWgConfTemplate           string
+	flagBasePath                 string
+	flagSubnetRanges             string
 )
 
+const (
+	defaultEmailSubject = "Your wireguard configuration"
+	defaultEmailContent = `Hi,</br>
+<p>In this email you can find your personal configuration for our wireguard server.</p>
+
+<p>Best</p>
+`
+)
+
+// embed the "templates" directory
+//
+//go:embed templates/*
+var embeddedTemplates embed.FS
+
+// embed the "assets" directory
+//
+//go:embed assets/*
+var embeddedAssets embed.FS
+
 func init() {
-	// command-line flags
+	// command-line flags and env variables
-	flagDisableLogin := flag.Bool("disable-login", false, "Disable login page. Turn off authentication.")
+	flag.BoolVar(&flagDisableLogin, "disable-login", util.LookupEnvOrBool("DISABLE_LOGIN", flagDisableLogin), "Disable authentication on the app. This is potentially dangerous.")
-	flagBindAddress := flag.String("bind-address", "0.0.0.0:5000", "Address:Port to which the app will be bound.")
+	flag.StringVar(&flagBindAddress, "bind-address", util.LookupEnvOrString("BIND_ADDRESS", flagBindAddress), "Address:Port to which the app will be bound.")
+	flag.StringVar(&flagSmtpHostname, "smtp-hostname", util.LookupEnvOrString("SMTP_HOSTNAME", flagSmtpHostname), "SMTP Hostname")
+	flag.IntVar(&flagSmtpPort, "smtp-port", util.LookupEnvOrInt("SMTP_PORT", flagSmtpPort), "SMTP Port")
+	flag.StringVar(&flagSmtpHelo, "smtp-helo", util.LookupEnvOrString("SMTP_HELO", flagSmtpHelo), "SMTP HELO Hostname")
+	flag.StringVar(&flagSmtpUsername, "smtp-username", util.LookupEnvOrString("SMTP_USERNAME", flagSmtpUsername), "SMTP Username")
+	flag.BoolVar(&flagSmtpNoTLSCheck, "smtp-no-tls-check", util.LookupEnvOrBool("SMTP_NO_TLS_CHECK", flagSmtpNoTLSCheck), "Disable TLS verification for SMTP. This is potentially dangerous.")
+	flag.StringVar(&flagSmtpEncryption, "smtp-encryption", util.LookupEnvOrString("SMTP_ENCRYPTION", flagSmtpEncryption), "SMTP Encryption : NONE, SSL, SSLTLS, TLS or STARTTLS (by default)")
+	flag.StringVar(&flagSmtpAuthType, "smtp-auth-type", util.LookupEnvOrString("SMTP_AUTH_TYPE", flagSmtpAuthType), "SMTP Auth Type : PLAIN, LOGIN or NONE.")
+	flag.StringVar(&flagEmailFrom, "email-from", util.LookupEnvOrString("EMAIL_FROM_ADDRESS", flagEmailFrom), "'From' email address.")
+	flag.StringVar(&flagEmailFromName, "email-from-name", util.LookupEnvOrString("EMAIL_FROM_NAME", flagEmailFromName), "'From' email name.")
+	flag.StringVar(&flagTelegramToken, "telegram-token", util.LookupEnvOrString("TELEGRAM_TOKEN", flagTelegramToken), "Telegram bot token for distributing configs to clients.")
+	flag.BoolVar(&flagTelegramAllowConfRequest, "telegram-allow-conf-request", util.LookupEnvOrBool("TELEGRAM_ALLOW_CONF_REQUEST", flagTelegramAllowConfRequest), "Allow users to get configs from the bot by sending a message.")
+	flag.IntVar(&flagTelegramFloodWait, "telegram-flood-wait", util.LookupEnvOrInt("TELEGRAM_FLOOD_WAIT", flagTelegramFloodWait), "Time in minutes before the next conf request is processed.")
+	flag.StringVar(&flagWgConfTemplate, "wg-conf-template", util.LookupEnvOrString("WG_CONF_TEMPLATE", flagWgConfTemplate), "Path to custom wg.conf template.")
+	flag.StringVar(&flagBasePath, "base-path", util.LookupEnvOrString("BASE_PATH", flagBasePath), "The base path of the URL")
+	flag.StringVar(&flagSubnetRanges, "subnet-ranges", util.LookupEnvOrString("SUBNET_RANGES", flagSubnetRanges), "IP ranges to choose from when assigning an IP for a client.")
+	flag.IntVar(&flagSessionMaxDuration, "session-max-duration", util.LookupEnvOrInt("SESSION_MAX_DURATION", flagSessionMaxDuration), "Max time in days a remembered session is refreshed and valid.")
+
+	var (
+		smtpPasswordLookup   = util.LookupEnvOrString("SMTP_PASSWORD", flagSmtpPassword)
+		sendgridApiKeyLookup = util.LookupEnvOrString("SENDGRID_API_KEY", flagSendgridApiKey)
+		sessionSecretLookup  = util.LookupEnvOrString("SESSION_SECRET", flagSessionSecret)
+	)
+
+	// check empty smtpPassword env var
+	if smtpPasswordLookup != "" {
+		flag.StringVar(&flagSmtpPassword, "smtp-password", smtpPasswordLookup, "SMTP Password")
+	} else {
+		flag.StringVar(&flagSmtpPassword, "smtp-password", util.LookupEnvOrFile("SMTP_PASSWORD_FILE", flagSmtpPassword), "SMTP Password File")
+	}
+
+	// check empty sendgridApiKey env var
+	if sendgridApiKeyLookup != "" {
+		flag.StringVar(&flagSendgridApiKey, "sendgrid-api-key", sendgridApiKeyLookup, "Your sendgrid api key.")
+	} else {
+		flag.StringVar(&flagSendgridApiKey, "sendgrid-api-key", util.LookupEnvOrFile("SENDGRID_API_KEY_FILE", flagSendgridApiKey), "File containing your sendgrid api key.")
+	}
+
+	// check empty sessionSecret env var
+	if sessionSecretLookup != "" {
+		flag.StringVar(&flagSessionSecret, "session-secret", sessionSecretLookup, "The key used to encrypt session cookies.")
+	} else {
+		flag.StringVar(&flagSessionSecret, "session-secret", util.LookupEnvOrFile("SESSION_SECRET_FILE", flagSessionSecret), "File containing the key used to encrypt session cookies.")
+	}
+
 	flag.Parse()
 
 	// update runtime config
-	util.DisableLogin = *flagDisableLogin
+	util.DisableLogin = flagDisableLogin
-	util.BindAddress = *flagBindAddress
+	util.BindAddress = flagBindAddress
+	util.SmtpHostname = flagSmtpHostname
+	util.SmtpPort = flagSmtpPort
+	util.SmtpHelo = flagSmtpHelo
+	util.SmtpUsername = flagSmtpUsername
+	util.SmtpPassword = flagSmtpPassword
+	util.SmtpAuthType = flagSmtpAuthType
+	util.SmtpNoTLSCheck = flagSmtpNoTLSCheck
+	util.SmtpEncryption = flagSmtpEncryption
+	util.SendgridApiKey = flagSendgridApiKey
+	util.EmailFrom = flagEmailFrom
+	util.EmailFromName = flagEmailFromName
+	util.SessionSecret = sha512.Sum512([]byte(flagSessionSecret))
+	util.SessionMaxDuration = int64(flagSessionMaxDuration) * 86_400 // Store in seconds
+	util.WgConfTemplate = flagWgConfTemplate
+	util.BasePath = util.ParseBasePath(flagBasePath)
+	util.SubnetRanges = util.ParseSubnetRanges(flagSubnetRanges)
 
-	// print app information
+	lvl, _ := util.ParseLogLevel(util.LookupEnvOrString(util.LogLevel, "INFO"))
-	fmt.Println("Wireguard UI")
-	fmt.Println("App Version\t:", appVersion)
-	fmt.Println("Git Commit\t:", gitCommit)
-	fmt.Println("Git Ref\t\t:", gitRef)
-	fmt.Println("Build Time\t:", buildTime)
-	fmt.Println("Git Repo\t:", "https://github.com/ngoduykhanh/wireguard-ui")
-	fmt.Println("Authentication\t:", !util.DisableLogin)
-	fmt.Println("Bind address\t:", util.BindAddress)
 
-	// initialize DB
+	telegram.Token = flagTelegramToken
-	err := util.InitDB()
+	telegram.AllowConfRequest = flagTelegramAllowConfRequest
-	if err != nil {
+	telegram.FloodWait = flagTelegramFloodWait
-		fmt.Print("Cannot init database: ", err)
+	telegram.LogLevel = lvl
+
+	// print only if log level is INFO or lower
+	if lvl <= log.INFO {
+		// print app information
+		fmt.Println("Wireguard UI")
+		fmt.Println("App Version\t:", appVersion)
+		fmt.Println("Git Commit\t:", gitCommit)
+		fmt.Println("Git Ref\t\t:", gitRef)
+		fmt.Println("Build Time\t:", buildTime)
+		fmt.Println("Git Repo\t:", "https://github.com/ngoduykhanh/wireguard-ui")
+		fmt.Println("Authentication\t:", !util.DisableLogin)
+		fmt.Println("Bind address\t:", util.BindAddress)
+		//fmt.Println("Sendgrid key\t:", util.SendgridApiKey)
+		fmt.Println("Email from\t:", util.EmailFrom)
+		fmt.Println("Email from name\t:", util.EmailFromName)
+		//fmt.Println("Session secret\t:", util.SessionSecret)
+		fmt.Println("Custom wg.conf\t:", util.WgConfTemplate)
+		fmt.Println("Base path\t:", util.BasePath+"/")
+		fmt.Println("Subnet ranges\t:", util.GetSubnetRangesString())
 	}
 }
 
 func main() {
+	db, err := jsondb.New("./db")
+	if err != nil {
+		panic(err)
+	}
+	if err := db.Init(); err != nil {
+		panic(err)
+	}
 	// set app extra data
-	extraData := make(map[string]string)
+	extraData := make(map[string]interface{})
 	extraData["appVersion"] = appVersion
+	extraData["gitCommit"] = gitCommit
+	extraData["basePath"] = util.BasePath
+	extraData["loginDisabled"] = flagDisableLogin
 
-	// create rice box for embedded template
+	// strip the "templates/" prefix from the embedded directory so files can be read by their direct name (e.g.
-	tmplBox := rice.MustFindBox("templates")
+	// "base.html" instead of "templates/base.html")
+	tmplDir, _ := fs.Sub(fs.FS(embeddedTemplates), "templates")
 
-	// rice file server for assets. "assets" is the folder where the files come from.
+	// create the wireguard config on start, if it doesn't exist
-	assetHandler := http.FileServer(rice.MustFindBox("assets").HTTPBox())
+	initServerConfig(db, tmplDir)
 
-	// register routes
+	// Check if subnet ranges are valid for the server configuration
-	app := router.New(tmplBox, extraData)
+	// Remove any non-valid CIDRs
-
+	if err := util.ValidateAndFixSubnetRanges(db); err != nil {
-	app.GET("/", handler.WireGuardClients())
+		panic(err)
-
-	if !util.DisableLogin {
-		app.GET("/login", handler.LoginPage())
-		app.POST("/login", handler.Login())
 	}
 
-	app.GET("/logout", handler.Logout())
+	// Print valid ranges
-	app.POST("/new-client", handler.NewClient())
+	if lvl, _ := util.ParseLogLevel(util.LookupEnvOrString(util.LogLevel, "INFO")); lvl <= log.INFO {
-	app.POST("/update-client", handler.UpdateClient())
+		fmt.Println("Valid subnet ranges:", util.GetSubnetRangesString())
-	app.POST("/client/set-status", handler.SetClientStatus())
+	}
-	app.POST("/remove-client", handler.RemoveClient())
-	app.GET("/download", handler.DownloadClient())
-	app.GET("/wg-server", handler.WireGuardServer())
-	app.POST("wg-server/interfaces", handler.WireGuardServerInterfaces())
-	app.POST("wg-server/keypair", handler.WireGuardServerKeyPair())
-	app.GET("/global-settings", handler.GlobalSettings())
-	app.POST("/global-settings", handler.GlobalSettingSubmit())
-	app.GET("/api/clients", handler.GetClients())
-	app.GET("/api/client/:id", handler.GetClient())
-	app.GET("/api/machine-ips", handler.MachineIPAddresses())
-	app.GET("/api/suggest-client-ips", handler.SuggestIPAllocation())
-	app.GET("/api/apply-wg-config", handler.ApplyServerConfig(tmplBox))
 
-	// servers other static files
+	// register routes
-	app.GET("/static/*", echo.WrapHandler(http.StripPrefix("/static/", assetHandler)))
+	app := router.New(tmplDir, extraData, util.SessionSecret)
 
-	app.Logger.Fatal(app.Start(util.BindAddress))
+	app.GET(util.BasePath, handler.WireGuardClients(db), handler.ValidSession, handler.RefreshSession)
+
+	// Important: Make sure that all non-GET routes check the request content type using handler.ContentTypeJson to
+	// mitigate CSRF attacks. This is effective, because browsers don't allow setting the Content-Type header on
+	// cross-origin requests.
+
+	if !util.DisableLogin {
+		app.GET(util.BasePath+"/login", handler.LoginPage())
+		app.POST(util.BasePath+"/login", handler.Login(db), handler.ContentTypeJson)
+		app.GET(util.BasePath+"/logout", handler.Logout(), handler.ValidSession)
+		app.GET(util.BasePath+"/profile", handler.LoadProfile(), handler.ValidSession, handler.RefreshSession)
+		app.GET(util.BasePath+"/users-settings", handler.UsersSettings(), handler.ValidSession, handler.RefreshSession, handler.NeedsAdmin)
+		app.POST(util.BasePath+"/update-user", handler.UpdateUser(db), handler.ValidSession, handler.ContentTypeJson)
+		app.POST(util.BasePath+"/create-user", handler.CreateUser(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
+		app.POST(util.BasePath+"/remove-user", handler.RemoveUser(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
+		app.GET(util.BasePath+"/get-users", handler.GetUsers(db), handler.ValidSession, handler.NeedsAdmin)
+		app.GET(util.BasePath+"/api/user/:username", handler.GetUser(db), handler.ValidSession)
+	}
+
+	var sendmail emailer.Emailer
+	if util.SendgridApiKey != "" {
+		sendmail = emailer.NewSendgridApiMail(util.SendgridApiKey, util.EmailFromName, util.EmailFrom)
+	} else {
+		sendmail = emailer.NewSmtpMail(util.SmtpHostname, util.SmtpPort, util.SmtpUsername, util.SmtpPassword, util.SmtpHelo, util.SmtpNoTLSCheck, util.SmtpAuthType, util.EmailFromName, util.EmailFrom, util.SmtpEncryption)
+	}
+
+	app.GET(util.BasePath+"/test-hash", handler.GetHashesChanges(db), handler.ValidSession)
+	app.GET(util.BasePath+"/about", handler.AboutPage())
+	app.GET(util.BasePath+"/_health", handler.Health())
+	app.GET(util.BasePath+"/favicon", handler.Favicon())
+	app.POST(util.BasePath+"/new-client", handler.NewClient(db), handler.ValidSession, handler.ContentTypeJson)
+	app.POST(util.BasePath+"/update-client", handler.UpdateClient(db), handler.ValidSession, handler.ContentTypeJson)
+	app.POST(util.BasePath+"/email-client", handler.EmailClient(db, sendmail, defaultEmailSubject, defaultEmailContent), handler.ValidSession, handler.ContentTypeJson)
+	app.POST(util.BasePath+"/send-telegram-client", handler.SendTelegramClient(db), handler.ValidSession, handler.ContentTypeJson)
+	app.POST(util.BasePath+"/client/set-status", handler.SetClientStatus(db), handler.ValidSession, handler.ContentTypeJson)
+	app.POST(util.BasePath+"/remove-client", handler.RemoveClient(db), handler.ValidSession, handler.ContentTypeJson)
+	app.GET(util.BasePath+"/download", handler.DownloadClient(db), handler.ValidSession)
+	app.GET(util.BasePath+"/wg-server", handler.WireGuardServer(db), handler.ValidSession, handler.RefreshSession, handler.NeedsAdmin)
+	app.POST(util.BasePath+"/wg-server/interfaces", handler.WireGuardServerInterfaces(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
+	app.POST(util.BasePath+"/wg-server/keypair", handler.WireGuardServerKeyPair(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
+	app.GET(util.BasePath+"/global-settings", handler.GlobalSettings(db), handler.ValidSession, handler.RefreshSession, handler.NeedsAdmin)
+	app.POST(util.BasePath+"/global-settings", handler.GlobalSettingSubmit(db), handler.ValidSession, handler.ContentTypeJson, handler.NeedsAdmin)
+	app.GET(util.BasePath+"/status", handler.Status(db), handler.ValidSession, handler.RefreshSession)
+	app.GET(util.BasePath+"/api/clients", handler.GetClients(db), handler.ValidSession)
+	app.GET(util.BasePath+"/api/client/:id", handler.GetClient(db), handler.ValidSession)
+	app.GET(util.BasePath+"/api/machine-ips", handler.MachineIPAddresses(), handler.ValidSession)
+	app.GET(util.BasePath+"/api/subnet-ranges", handler.GetOrderedSubnetRanges(), handler.ValidSession)
+	app.GET(util.BasePath+"/api/suggest-client-ips", handler.SuggestIPAllocation(db), handler.ValidSession)
+	app.POST(util.BasePath+"/api/apply-wg-config", handler.ApplyServerConfig(db, tmplDir), handler.ValidSession, handler.ContentTypeJson)
+	app.GET(util.BasePath+"/wake_on_lan_hosts", handler.GetWakeOnLanHosts(db), handler.ValidSession, handler.RefreshSession)
+	app.POST(util.BasePath+"/wake_on_lan_host", handler.SaveWakeOnLanHost(db), handler.ValidSession, handler.ContentTypeJson)
+	app.DELETE(util.BasePath+"/wake_on_lan_host/:mac_address", handler.DeleteWakeOnHost(db), handler.ValidSession, handler.ContentTypeJson)
+	app.PUT(util.BasePath+"/wake_on_lan_host/:mac_address", handler.WakeOnHost(db), handler.ValidSession, handler.ContentTypeJson)
+
+	// strip the "assets/" prefix from the embedded directory so files can be called directly without the "assets/"
+	// prefix
+	assetsDir, _ := fs.Sub(fs.FS(embeddedAssets), "assets")
+	assetHandler := http.FileServer(http.FS(assetsDir))
+	// serves other static files
+	app.GET(util.BasePath+"/static/*", echo.WrapHandler(http.StripPrefix(util.BasePath+"/static/", assetHandler)))
+
+	initDeps := telegram.TgBotInitDependencies{
+		DB:                             db,
+		SendRequestedConfigsToTelegram: util.SendRequestedConfigsToTelegram,
+	}
+
+	initTelegram(initDeps)
+
+	if strings.HasPrefix(util.BindAddress, "unix://") {
+		// Listen on unix domain socket.
+		// https://github.com/labstack/echo/issues/830
+		err := syscall.Unlink(util.BindAddress[6:])
+		if err != nil {
+			app.Logger.Fatalf("Cannot unlink unix socket: Error: %v", err)
+		}
+		l, err := net.Listen("unix", util.BindAddress[6:])
+		if err != nil {
+			app.Logger.Fatalf("Cannot create unix socket. Error: %v", err)
+		}
+		app.Listener = l
+		app.Logger.Fatal(app.Start(""))
+	} else {
+		// Listen on TCP socket
+		app.Logger.Fatal(app.Start(util.BindAddress))
+	}
+}
+
+func initServerConfig(db store.IStore, tmplDir fs.FS) {
+	settings, err := db.GetGlobalSettings()
+	if err != nil {
+		log.Fatalf("Cannot get global settings: %v", err)
+	}
+
+	if _, err := os.Stat(settings.ConfigFilePath); err == nil {
+		// file exists, don't overwrite it implicitly
+		return
+	}
+
+	server, err := db.GetServer()
+	if err != nil {
+		log.Fatalf("Cannot get server config: %v", err)
+	}
+
+	clients, err := db.GetClients(false)
+	if err != nil {
+		log.Fatalf("Cannot get client config: %v", err)
+	}
+
+	users, err := db.GetUsers()
+	if err != nil {
+		log.Fatalf("Cannot get user config: %v", err)
+	}
+
+	// write config file
+	err = util.WriteWireGuardServerConfig(tmplDir, server, clients, users, settings)
+	if err != nil {
+		log.Fatalf("Cannot create server config: %v", err)
+	}
+}
+
+func initTelegram(initDeps telegram.TgBotInitDependencies) {
+	go func() {
+		for {
+			err := telegram.Start(initDeps)
+			if err == nil {
+				break
+			}
+		}
+	}()
 }

model/client.go

@@ -6,18 +6,23 @@ import (
 
 // Client model
 type Client struct {
-	ID           string    `json:"id"`
+	ID              string    `json:"id"`
-	PrivateKey   string    `json:"private_key"`
+	PrivateKey      string    `json:"private_key"`
-	PublicKey    string    `json:"public_key"`
+	PublicKey       string    `json:"public_key"`
-	PresharedKey string    `json:"preshared_key"`
+	PresharedKey    string    `json:"preshared_key"`
-	Name         string    `json:"name"`
+	Name            string    `json:"name"`
-	Email        string    `json:"email"`
+	TgUserid        string    `json:"telegram_userid"`
-	AllocatedIPs []string  `json:"allocated_ips"`
+	Email           string    `json:"email"`
-	AllowedIPs   []string  `json:"allowed_ips"`
+	SubnetRanges    []string  `json:"subnet_ranges,omitempty"`
-	UseServerDNS bool      `json:"use_server_dns"`
+	AllocatedIPs    []string  `json:"allocated_ips"`
-	Enabled      bool      `json:"enabled"`
+	AllowedIPs      []string  `json:"allowed_ips"`
-	CreatedAt    time.Time `json:"created_at"`
+	ExtraAllowedIPs []string  `json:"extra_allowed_ips"`
-	UpdatedAt    time.Time `json:"updated_at"`
+	Endpoint        string    `json:"endpoint"`
+	AdditionalNotes string    `json:"additional_notes"`
+	UseServerDNS    bool      `json:"use_server_dns"`
+	Enabled         bool      `json:"enabled"`
+	CreatedAt       time.Time `json:"created_at"`
+	UpdatedAt       time.Time `json:"updated_at"`
 }
 
 // ClientData includes the Client and extra data
@@ -25,3 +30,9 @@ type ClientData struct {
 	Client *Client
 	QRCode string
 }
+
+type QRCodeSettings struct {
+	Enabled    bool
+	IncludeDNS bool
+	IncludeMTU bool
+}

model/client_defaults.go

@@ -0,0 +1,9 @@
+package model
+
+// ClientDefaults Defaults for creation of new clients used in the templates
+type ClientDefaults struct {
+	AllowedIps          []string
+	ExtraAllowedIps     []string
+	UseServerDNS        bool
+	EnableAfterCreation bool
+}

model/misc.go

@@ -10,4 +10,11 @@ type Interface struct {
 type BaseData struct {
 	Active      string
 	CurrentUser string
+	Admin       bool
+}
+
+// ClientServerHashes struct, to save hashes to detect changes
+type ClientServerHashes struct {
+	Client string `json:"client"`
+	Server string `json:"server"`
 }

model/server.go

@@ -23,5 +23,6 @@ type ServerInterface struct {
 	ListenPort int       `json:"listen_port,string"` // ,string to get listen_port string input as int
 	UpdatedAt  time.Time `json:"updated_at"`
 	PostUp     string    `json:"post_up"`
+	PreDown    string    `json:"pre_down"`
 	PostDown   string    `json:"post_down"`
 }

model/setting.go

@@ -10,6 +10,8 @@ type GlobalSetting struct {
 	DNSServers          []string  `json:"dns_servers"`
 	MTU                 int       `json:"mtu,string"`
 	PersistentKeepalive int       `json:"persistent_keepalive,string"`
+	FirewallMark        string    `json:"firewall_mark"`
+	Table               string    `json:"table"`
 	ConfigFilePath      string    `json:"config_file_path"`
 	UpdatedAt           time.Time `json:"updated_at"`
 }

model/user.go

@@ -4,4 +4,7 @@ package model
 type User struct {
 	Username string `json:"username"`
 	Password string `json:"password"`
+	// PasswordHash takes precedence over Password.
+	PasswordHash string `json:"password_hash"`
+	Admin        bool   `json:"admin"`
 }

model/wake_on_lan_host.go

@@ -0,0 +1,31 @@
+package model
+
+import (
+	"errors"
+	"net"
+	"strings"
+	"time"
+)
+
+type WakeOnLanHost struct {
+	MacAddress string     `json:"MacAddress"`
+	Name       string     `json:"Name"`
+	LatestUsed *time.Time `json:"LatestUsed"`
+}
+
+func (host WakeOnLanHost) ResolveResourceName() (string, error) {
+	resourceName := strings.Trim(host.MacAddress, " \t\r\n\000")
+	if len(resourceName) == 0 {
+		return "", errors.New("mac Address is Empty")
+	}
+	resourceName = strings.ToUpper(resourceName)
+	resourceName = strings.ReplaceAll(resourceName, ":", "-")
+
+	if _, err := net.ParseMAC(resourceName); err != nil {
+		return "", errors.New("invalid mac address")
+	}
+
+	return resourceName, nil
+}
+
+const WakeOnLanHostCollectionName = "wake_on_lan_hosts"

prepare_assets.sh

@@ -4,7 +4,9 @@ set -e
 DIR=$(dirname "$0")
 
 # install node modules
-yarn install --pure-lockfile --production
+YARN=yarn
+[ -x /usr/bin/lsb_release ] && [ -n "`lsb_release -i | grep Debian`" ] && YARN=yarnpkg
+$YARN install --pure-lockfile --production
 
 # Copy admin-lte dist
 mkdir -p "${DIR}/assets/dist/js" "${DIR}/assets/dist/css" && \

router/router.go

@@ -3,21 +3,23 @@ package router
 import (
 	"errors"
 	"io"
+	"io/fs"
 	"reflect"
+	"strings"
 	"text/template"
 
-	"github.com/GeertJohan/go.rice"
 	"github.com/gorilla/sessions"
 	"github.com/labstack/echo-contrib/session"
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 	"github.com/labstack/gommon/log"
+	"github.com/ngoduykhanh/wireguard-ui/util"
 )
 
 // TemplateRegistry is a custom html/template renderer for Echo framework
 type TemplateRegistry struct {
 	templates map[string]*template.Template
-	extraData map[string]string
+	extraData map[string]interface{}
 }
 
 // Render e.Renderer interface
@@ -33,6 +35,8 @@ func (t *TemplateRegistry) Render(w io.Writer, name string, data interface{}, c
 		for k, v := range t.extraData {
 			data.(map[string]interface{})[k] = v
 		}
+
+		data.(map[string]interface{})["client_defaults"] = util.ClientDefaultsFromEnv()
 	}
 
 	// login page does not need the base layout
@@ -44,52 +48,106 @@ func (t *TemplateRegistry) Render(w io.Writer, name string, data interface{}, c
 }
 
 // New function
-func New(tmplBox *rice.Box, extraData map[string]string) *echo.Echo {
+func New(tmplDir fs.FS, extraData map[string]interface{}, secret [64]byte) *echo.Echo {
 	e := echo.New()
-	e.Use(session.Middleware(sessions.NewCookieStore([]byte("secret"))))
+
+	cookiePath := util.GetCookiePath()
+
+	cookieStore := sessions.NewCookieStore(secret[:32], secret[32:])
+	cookieStore.Options.Path = cookiePath
+	cookieStore.Options.HttpOnly = true
+	cookieStore.MaxAge(86400 * 7)
+
+	e.Use(session.Middleware(cookieStore))
 
 	// read html template file to string
-	tmplBaseString, err := tmplBox.String("base.html")
+	tmplBaseString, err := util.StringFromEmbedFile(tmplDir, "base.html")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	tmplLoginString, err := tmplBox.String("login.html")
+	tmplLoginString, err := util.StringFromEmbedFile(tmplDir, "login.html")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	tmplClientsString, err := tmplBox.String("clients.html")
+	tmplProfileString, err := util.StringFromEmbedFile(tmplDir, "profile.html")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	tmplServerString, err := tmplBox.String("server.html")
+	tmplClientsString, err := util.StringFromEmbedFile(tmplDir, "clients.html")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	tmplGlobalSettingsString, err := tmplBox.String("global_settings.html")
+	tmplServerString, err := util.StringFromEmbedFile(tmplDir, "server.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tmplGlobalSettingsString, err := util.StringFromEmbedFile(tmplDir, "global_settings.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tmplUsersSettingsString, err := util.StringFromEmbedFile(tmplDir, "users_settings.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tmplStatusString, err := util.StringFromEmbedFile(tmplDir, "status.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tmplWakeOnLanHostsString, err := util.StringFromEmbedFile(tmplDir, "wake_on_lan_hosts.html")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	aboutPageString, err := util.StringFromEmbedFile(tmplDir, "about.html")
 	if err != nil {
 		log.Fatal(err)
 	}
 
 	// create template list
+	funcs := template.FuncMap{
+		"StringsJoin": strings.Join,
+	}
 	templates := make(map[string]*template.Template)
-	templates["login.html"] = template.Must(template.New("login").Parse(tmplLoginString))
+	templates["login.html"] = template.Must(template.New("login").Funcs(funcs).Parse(tmplLoginString))
-	templates["clients.html"] = template.Must(template.New("clients").Parse(tmplBaseString + tmplClientsString))
+	templates["profile.html"] = template.Must(template.New("profile").Funcs(funcs).Parse(tmplBaseString + tmplProfileString))
-	templates["server.html"] = template.Must(template.New("server").Parse(tmplBaseString + tmplServerString))
+	templates["clients.html"] = template.Must(template.New("clients").Funcs(funcs).Parse(tmplBaseString + tmplClientsString))
-	templates["global_settings.html"] = template.Must(template.New("global_settings").Parse(tmplBaseString + tmplGlobalSettingsString))
+	templates["server.html"] = template.Must(template.New("server").Funcs(funcs).Parse(tmplBaseString + tmplServerString))
+	templates["global_settings.html"] = template.Must(template.New("global_settings").Funcs(funcs).Parse(tmplBaseString + tmplGlobalSettingsString))
+	templates["users_settings.html"] = template.Must(template.New("users_settings").Funcs(funcs).Parse(tmplBaseString + tmplUsersSettingsString))
+	templates["status.html"] = template.Must(template.New("status").Funcs(funcs).Parse(tmplBaseString + tmplStatusString))
+	templates["wake_on_lan_hosts.html"] = template.Must(template.New("wake_on_lan_hosts").Funcs(funcs).Parse(tmplBaseString + tmplWakeOnLanHostsString))
+	templates["about.html"] = template.Must(template.New("about").Funcs(funcs).Parse(tmplBaseString + aboutPageString))
 
-	e.Logger.SetLevel(log.DEBUG)
+	lvl, err := util.ParseLogLevel(util.LookupEnvOrString(util.LogLevel, "INFO"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	logConfig := middleware.DefaultLoggerConfig
+	logConfig.Skipper = func(c echo.Context) bool {
+		resp := c.Response()
+		if resp.Status >= 500 && lvl > log.ERROR { // do not log if response is 5XX but log level is higher than ERROR
+			return true
+		} else if resp.Status >= 400 && lvl > log.WARN { // do not log if response is 4XX but log level is higher than WARN
+			return true
+		} else if lvl > log.DEBUG { // do not log if log level is higher than DEBUG
+			return true
+		}
+		return false
+	}
+
+	e.Logger.SetLevel(lvl)
 	e.Pre(middleware.RemoveTrailingSlash())
-	e.Use(middleware.Logger())
+	e.Use(middleware.LoggerWithConfig(logConfig))
-	e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
-		AllowOrigins: []string{"*"},
-		AllowHeaders: []string{echo.HeaderOrigin, echo.HeaderContentType, echo.HeaderAccept, echo.HeaderAuthorization},
-		AllowMethods: []string{echo.GET, echo.HEAD, echo.PUT, echo.PATCH, echo.POST, echo.DELETE},
-	}))
 	e.HideBanner = true
+	e.HidePort = lvl > log.INFO // hide the port output if the log level is higher than INFO
 	e.Validator = NewValidator()
 	e.Renderer = &TemplateRegistry{
 		templates: templates,

store/jsondb/jsondb.go

@@ -0,0 +1,410 @@
+package jsondb
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"os"
+	"path"
+	"strconv"
+	"time"
+
+	"github.com/sdomino/scribble"
+	"github.com/skip2/go-qrcode"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"github.com/ngoduykhanh/wireguard-ui/model"
+	"github.com/ngoduykhanh/wireguard-ui/util"
+)
+
+type JsonDB struct {
+	conn   *scribble.Driver
+	dbPath string
+}
+
+// New returns a new pointer JsonDB
+func New(dbPath string) (*JsonDB, error) {
+	conn, err := scribble.New(dbPath, nil)
+	if err != nil {
+		return nil, err
+	}
+	ans := JsonDB{
+		conn:   conn,
+		dbPath: dbPath,
+	}
+	return &ans, nil
+}
+
+func (o *JsonDB) Init() error {
+	var clientPath = path.Join(o.dbPath, "clients")
+	var serverPath = path.Join(o.dbPath, "server")
+	var userPath = path.Join(o.dbPath, "users")
+	var wakeOnLanHostsPath = path.Join(o.dbPath, "wake_on_lan_hosts")
+	var serverInterfacePath = path.Join(serverPath, "interfaces.json")
+	var serverKeyPairPath = path.Join(serverPath, "keypair.json")
+	var globalSettingPath = path.Join(serverPath, "global_settings.json")
+	var hashesPath = path.Join(serverPath, "hashes.json")
+
+	// create directories if they do not exist
+	if _, err := os.Stat(clientPath); os.IsNotExist(err) {
+		os.MkdirAll(clientPath, os.ModePerm)
+	}
+	if _, err := os.Stat(serverPath); os.IsNotExist(err) {
+		os.MkdirAll(serverPath, os.ModePerm)
+	}
+	if _, err := os.Stat(userPath); os.IsNotExist(err) {
+		os.MkdirAll(userPath, os.ModePerm)
+	}
+	if _, err := os.Stat(wakeOnLanHostsPath); os.IsNotExist(err) {
+		os.MkdirAll(wakeOnLanHostsPath, os.ModePerm)
+	}
+
+	// server's interface
+	if _, err := os.Stat(serverInterfacePath); os.IsNotExist(err) {
+		serverInterface := new(model.ServerInterface)
+		serverInterface.Addresses = util.LookupEnvOrStrings(util.ServerAddressesEnvVar, []string{util.DefaultServerAddress})
+		serverInterface.ListenPort = util.LookupEnvOrInt(util.ServerListenPortEnvVar, util.DefaultServerPort)
+		serverInterface.PostUp = util.LookupEnvOrString(util.ServerPostUpScriptEnvVar, "")
+		serverInterface.PostDown = util.LookupEnvOrString(util.ServerPostDownScriptEnvVar, "")
+		serverInterface.UpdatedAt = time.Now().UTC()
+		o.conn.Write("server", "interfaces", serverInterface)
+		err := util.ManagePerms(serverInterfacePath)
+		if err != nil {
+			return err
+		}
+	}
+
+	// server's key pair
+	if _, err := os.Stat(serverKeyPairPath); os.IsNotExist(err) {
+		key, err := wgtypes.GeneratePrivateKey()
+		if err != nil {
+			return scribble.ErrMissingCollection
+		}
+		serverKeyPair := new(model.ServerKeypair)
+		serverKeyPair.PrivateKey = key.String()
+		serverKeyPair.PublicKey = key.PublicKey().String()
+		serverKeyPair.UpdatedAt = time.Now().UTC()
+		o.conn.Write("server", "keypair", serverKeyPair)
+		err = util.ManagePerms(serverKeyPairPath)
+		if err != nil {
+			return err
+		}
+	}
+
+	// global settings
+	if _, err := os.Stat(globalSettingPath); os.IsNotExist(err) {
+		endpointAddress := util.LookupEnvOrString(util.EndpointAddressEnvVar, "")
+		if endpointAddress == "" {
+			// automatically find an external IP address
+			publicInterface, err := util.GetPublicIP()
+			if err != nil {
+				return err
+			}
+			endpointAddress = publicInterface.IPAddress
+		}
+
+		globalSetting := new(model.GlobalSetting)
+		globalSetting.EndpointAddress = endpointAddress
+		globalSetting.DNSServers = util.LookupEnvOrStrings(util.DNSEnvVar, []string{util.DefaultDNS})
+		globalSetting.MTU = util.LookupEnvOrInt(util.MTUEnvVar, util.DefaultMTU)
+		globalSetting.PersistentKeepalive = util.LookupEnvOrInt(util.PersistentKeepaliveEnvVar, util.DefaultPersistentKeepalive)
+		globalSetting.FirewallMark = util.LookupEnvOrString(util.FirewallMarkEnvVar, util.DefaultFirewallMark)
+		globalSetting.Table = util.LookupEnvOrString(util.TableEnvVar, util.DefaultTable)
+		globalSetting.ConfigFilePath = util.LookupEnvOrString(util.ConfigFilePathEnvVar, util.DefaultConfigFilePath)
+		globalSetting.UpdatedAt = time.Now().UTC()
+		o.conn.Write("server", "global_settings", globalSetting)
+		err := util.ManagePerms(globalSettingPath)
+		if err != nil {
+			return err
+		}
+	}
+
+	// hashes
+	if _, err := os.Stat(hashesPath); os.IsNotExist(err) {
+		clientServerHashes := new(model.ClientServerHashes)
+		clientServerHashes.Client = "none"
+		clientServerHashes.Server = "none"
+		o.conn.Write("server", "hashes", clientServerHashes)
+		err := util.ManagePerms(hashesPath)
+		if err != nil {
+			return err
+		}
+	}
+
+	// user info
+	results, err := o.conn.ReadAll("users")
+	if err != nil || len(results) < 1 {
+		user := new(model.User)
+		user.Username = util.LookupEnvOrString(util.UsernameEnvVar, util.DefaultUsername)
+		user.Admin = util.DefaultIsAdmin
+		user.PasswordHash = util.LookupEnvOrString(util.PasswordHashEnvVar, "")
+		if user.PasswordHash == "" {
+			user.PasswordHash = util.LookupEnvOrFile(util.PasswordHashFileEnvVar, "")
+			if user.PasswordHash == "" {
+				plaintext := util.LookupEnvOrString(util.PasswordEnvVar, util.DefaultPassword)
+				if plaintext == util.DefaultPassword {
+					plaintext = util.LookupEnvOrFile(util.PasswordFileEnvVar, util.DefaultPassword)
+				}
+				hash, err := util.HashPassword(plaintext)
+				if err != nil {
+					return err
+				}
+				user.PasswordHash = hash
+			}
+		}
+
+		o.conn.Write("users", user.Username, user)
+		results, _ = o.conn.ReadAll("users")
+		err = util.ManagePerms(path.Join(path.Join(o.dbPath, "users"), user.Username+".json"))
+		if err != nil {
+			return err
+		}
+	}
+
+	// init cache
+	for _, i := range results {
+		user := model.User{}
+
+		if err := json.Unmarshal([]byte(i), &user); err == nil {
+			util.DBUsersToCRC32[user.Username] = util.GetDBUserCRC32(user)
+		}
+	}
+
+	clients, err := o.GetClients(false)
+	if err != nil {
+		return nil
+	}
+	for _, cl := range clients {
+		client := cl.Client
+		if client.Enabled && len(client.TgUserid) > 0 {
+			if userid, err := strconv.ParseInt(client.TgUserid, 10, 64); err == nil {
+				util.UpdateTgToClientID(userid, client.ID)
+			}
+		}
+	}
+
+	return nil
+}
+
+// GetUsers func to get all users from the database
+func (o *JsonDB) GetUsers() ([]model.User, error) {
+	var users []model.User
+	results, err := o.conn.ReadAll("users")
+	if err != nil {
+		return users, err
+	}
+	for _, i := range results {
+		user := model.User{}
+
+		if err := json.Unmarshal(i, &user); err != nil {
+			return users, fmt.Errorf("cannot decode user json structure: %v", err)
+		}
+		users = append(users, user)
+	}
+	return users, err
+}
+
+// GetUserByName func to get single user from the database
+func (o *JsonDB) GetUserByName(username string) (model.User, error) {
+	user := model.User{}
+
+	if err := o.conn.Read("users", username, &user); err != nil {
+		return user, err
+	}
+
+	return user, nil
+}
+
+// SaveUser func to save user in the database
+func (o *JsonDB) SaveUser(user model.User) error {
+	userPath := path.Join(path.Join(o.dbPath, "users"), user.Username+".json")
+	output := o.conn.Write("users", user.Username, user)
+	err := util.ManagePerms(userPath)
+	if err != nil {
+		return err
+	}
+	util.DBUsersToCRC32[user.Username] = util.GetDBUserCRC32(user)
+	return output
+}
+
+// DeleteUser func to remove user from the database
+func (o *JsonDB) DeleteUser(username string) error {
+	delete(util.DBUsersToCRC32, username)
+	return o.conn.Delete("users", username)
+}
+
+// GetGlobalSettings func to query global settings from the database
+func (o *JsonDB) GetGlobalSettings() (model.GlobalSetting, error) {
+	settings := model.GlobalSetting{}
+	return settings, o.conn.Read("server", "global_settings", &settings)
+}
+
+// GetServer func to query Server settings from the database
+func (o *JsonDB) GetServer() (model.Server, error) {
+	server := model.Server{}
+	// read server interface information
+	serverInterface := model.ServerInterface{}
+	if err := o.conn.Read("server", "interfaces", &serverInterface); err != nil {
+		return server, err
+	}
+
+	// read server key pair information
+	serverKeyPair := model.ServerKeypair{}
+	if err := o.conn.Read("server", "keypair", &serverKeyPair); err != nil {
+		return server, err
+	}
+
+	// create Server object and return
+	server.Interface = &serverInterface
+	server.KeyPair = &serverKeyPair
+	return server, nil
+}
+
+func (o *JsonDB) GetClients(hasQRCode bool) ([]model.ClientData, error) {
+	var clients []model.ClientData
+
+	// read all client json files in "clients" directory
+	records, err := o.conn.ReadAll("clients")
+	if err != nil {
+		return clients, err
+	}
+
+	// build the ClientData list
+	for _, f := range records {
+		client := model.Client{}
+		clientData := model.ClientData{}
+
+		// get client info
+		if err := json.Unmarshal(f, &client); err != nil {
+			return clients, fmt.Errorf("cannot decode client json structure: %v", err)
+		}
+
+		// generate client qrcode image in base64
+		if hasQRCode && client.PrivateKey != "" {
+			server, _ := o.GetServer()
+			globalSettings, _ := o.GetGlobalSettings()
+
+			png, err := qrcode.Encode(util.BuildClientConfig(client, server, globalSettings), qrcode.Medium, 256)
+			if err == nil {
+				clientData.QRCode = "data:image/png;base64," + base64.StdEncoding.EncodeToString(png)
+			} else {
+				fmt.Print("Cannot generate QR code: ", err)
+			}
+		}
+
+		// create the list of clients and their qrcode data
+		clientData.Client = &client
+		clients = append(clients, clientData)
+	}
+
+	return clients, nil
+}
+
+func (o *JsonDB) GetClientByID(clientID string, qrCodeSettings model.QRCodeSettings) (model.ClientData, error) {
+	client := model.Client{}
+	clientData := model.ClientData{}
+
+	// read client information
+	if err := o.conn.Read("clients", clientID, &client); err != nil {
+		return clientData, err
+	}
+
+	// generate client qrcode image in base64
+	if qrCodeSettings.Enabled && client.PrivateKey != "" {
+		server, _ := o.GetServer()
+		globalSettings, _ := o.GetGlobalSettings()
+		client := client
+		if !qrCodeSettings.IncludeDNS {
+			globalSettings.DNSServers = []string{}
+		}
+		if !qrCodeSettings.IncludeMTU {
+			globalSettings.MTU = 0
+		}
+
+		png, err := qrcode.Encode(util.BuildClientConfig(client, server, globalSettings), qrcode.Medium, 256)
+		if err == nil {
+			clientData.QRCode = "data:image/png;base64," + base64.StdEncoding.EncodeToString(png)
+		} else {
+			fmt.Print("Cannot generate QR code: ", err)
+		}
+	}
+
+	clientData.Client = &client
+
+	return clientData, nil
+}
+
+func (o *JsonDB) SaveClient(client model.Client) error {
+	clientPath := path.Join(path.Join(o.dbPath, "clients"), client.ID+".json")
+	output := o.conn.Write("clients", client.ID, client)
+	if output == nil {
+		if client.Enabled && len(client.TgUserid) > 0 {
+			if userid, err := strconv.ParseInt(client.TgUserid, 10, 64); err == nil {
+				util.UpdateTgToClientID(userid, client.ID)
+			}
+		} else {
+			util.RemoveTgToClientID(client.ID)
+		}
+	} else {
+		util.RemoveTgToClientID(client.ID)
+	}
+	err := util.ManagePerms(clientPath)
+	if err != nil {
+		return err
+	}
+	return output
+}
+
+func (o *JsonDB) DeleteClient(clientID string) error {
+	util.RemoveTgToClientID(clientID)
+	return o.conn.Delete("clients", clientID)
+}
+
+func (o *JsonDB) SaveServerInterface(serverInterface model.ServerInterface) error {
+	serverInterfacePath := path.Join(path.Join(o.dbPath, "server"), "interfaces.json")
+	output := o.conn.Write("server", "interfaces", serverInterface)
+	err := util.ManagePerms(serverInterfacePath)
+	if err != nil {
+		return err
+	}
+	return output
+}
+
+func (o *JsonDB) SaveServerKeyPair(serverKeyPair model.ServerKeypair) error {
+	serverKeyPairPath := path.Join(path.Join(o.dbPath, "server"), "keypair.json")
+	output := o.conn.Write("server", "keypair", serverKeyPair)
+	err := util.ManagePerms(serverKeyPairPath)
+	if err != nil {
+		return err
+	}
+	return output
+}
+
+func (o *JsonDB) SaveGlobalSettings(globalSettings model.GlobalSetting) error {
+	globalSettingsPath := path.Join(path.Join(o.dbPath, "server"), "global_settings.json")
+	output := o.conn.Write("server", "global_settings", globalSettings)
+	err := util.ManagePerms(globalSettingsPath)
+	if err != nil {
+		return err
+	}
+	return output
+}
+
+func (o *JsonDB) GetPath() string {
+	return o.dbPath
+}
+
+func (o *JsonDB) GetHashes() (model.ClientServerHashes, error) {
+	hashes := model.ClientServerHashes{}
+	return hashes, o.conn.Read("server", "hashes", &hashes)
+}
+
+func (o *JsonDB) SaveHashes(hashes model.ClientServerHashes) error {
+	hashesPath := path.Join(path.Join(o.dbPath, "server"), "hashes.json")
+	output := o.conn.Write("server", "hashes", hashes)
+	err := util.ManagePerms(hashesPath)
+	if err != nil {
+		return err
+	}
+	return output
+}

store/jsondb/jsondb_wake_on_lan.go

@@ -0,0 +1,88 @@
+package jsondb
+
+import (
+	"encoding/json"
+	"fmt"
+	"path"
+
+	"github.com/ngoduykhanh/wireguard-ui/model"
+	"github.com/ngoduykhanh/wireguard-ui/util"
+)
+
+func (o *JsonDB) GetWakeOnLanHosts() ([]model.WakeOnLanHost, error) {
+	var hosts []model.WakeOnLanHost
+
+	// read all client json file in "hosts" directory
+	records, err := o.conn.ReadAll(model.WakeOnLanHostCollectionName)
+	if err != nil {
+		return hosts, err
+	}
+
+	// build the ClientData list
+	for _, f := range records {
+		host := model.WakeOnLanHost{}
+
+		// get client info
+		if err := json.Unmarshal(f, &host); err != nil {
+			return hosts, fmt.Errorf("cannot decode client json structure: %v", err)
+		}
+
+		// create the list of hosts and their qrcode data
+		hosts = append(hosts, host)
+	}
+
+	return hosts, nil
+}
+
+func (o *JsonDB) GetWakeOnLanHost(macAddress string) (*model.WakeOnLanHost, error) {
+	host := &model.WakeOnLanHost{
+		MacAddress: macAddress,
+	}
+	resourceName, err := host.ResolveResourceName()
+	if err != nil {
+		return nil, err
+	}
+
+	err = o.conn.Read(model.WakeOnLanHostCollectionName, resourceName, host)
+	if err != nil {
+		host = nil
+	}
+	return host, err
+}
+
+func (o *JsonDB) DeleteWakeOnHostLanHost(macAddress string) error {
+	host := &model.WakeOnLanHost{
+		MacAddress: macAddress,
+	}
+	resourceName, err := host.ResolveResourceName()
+	if err != nil {
+		return err
+	}
+
+	return o.conn.Delete(model.WakeOnLanHostCollectionName, resourceName)
+}
+
+func (o *JsonDB) SaveWakeOnLanHost(host model.WakeOnLanHost) error {
+	resourceName, err := host.ResolveResourceName()
+	if err != nil {
+		return err
+	}
+
+	wakeOnLanHostPath := path.Join(path.Join(o.dbPath, model.WakeOnLanHostCollectionName), resourceName+".json")
+	output := o.conn.Write(model.WakeOnLanHostCollectionName, resourceName, host)
+	err = util.ManagePerms(wakeOnLanHostPath)
+	if err != nil {
+		return err
+	}
+
+	return output
+}
+
+func (o *JsonDB) DeleteWakeOnHost(host model.WakeOnLanHost) error {
+	resourceName, err := host.ResolveResourceName()
+	if err != nil {
+		return err
+	}
+
+	return o.conn.Delete(model.WakeOnLanHostCollectionName, resourceName)
+}

store/store.go

@@ -0,0 +1,30 @@
+package store
+
+import (
+	"github.com/ngoduykhanh/wireguard-ui/model"
+)
+
+type IStore interface {
+	Init() error
+	GetUsers() ([]model.User, error)
+	GetUserByName(username string) (model.User, error)
+	SaveUser(user model.User) error
+	DeleteUser(username string) error
+	GetGlobalSettings() (model.GlobalSetting, error)
+	GetServer() (model.Server, error)
+	GetClients(hasQRCode bool) ([]model.ClientData, error)
+	GetClientByID(clientID string, qrCode model.QRCodeSettings) (model.ClientData, error)
+	SaveClient(client model.Client) error
+	DeleteClient(clientID string) error
+	SaveServerInterface(serverInterface model.ServerInterface) error
+	SaveServerKeyPair(serverKeyPair model.ServerKeypair) error
+	SaveGlobalSettings(globalSettings model.GlobalSetting) error
+	GetWakeOnLanHosts() ([]model.WakeOnLanHost, error)
+	GetWakeOnLanHost(macAddress string) (*model.WakeOnLanHost, error)
+	DeleteWakeOnHostLanHost(macAddress string) error
+	SaveWakeOnLanHost(host model.WakeOnLanHost) error
+	DeleteWakeOnHost(host model.WakeOnLanHost) error
+	GetPath() string
+	SaveHashes(hashes model.ClientServerHashes) error
+	GetHashes() (model.ClientServerHashes, error)
+}

telegram/bot.go

@@ -0,0 +1,161 @@
+package telegram
+
+import (
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/NicoNex/echotron/v3"
+	"github.com/labstack/gommon/log"
+	"github.com/ngoduykhanh/wireguard-ui/store"
+)
+
+type SendRequestedConfigsToTelegram func(db store.IStore, userid int64) []string
+
+type TgBotInitDependencies struct {
+	DB                             store.IStore
+	SendRequestedConfigsToTelegram SendRequestedConfigsToTelegram
+}
+
+var (
+	Token            string
+	AllowConfRequest bool
+	FloodWait        int
+	LogLevel         log.Lvl
+
+	Bot      *echotron.API
+	BotMutex sync.RWMutex
+
+	floodWait        = make(map[int64]int64)
+	floodMessageSent = make(map[int64]struct{})
+)
+
+func Start(initDeps TgBotInitDependencies) (err error) {
+	ticker := time.NewTicker(time.Minute)
+	defer func() {
+		if err != nil {
+			BotMutex.Lock()
+			Bot = nil
+			BotMutex.Unlock()
+			ticker.Stop()
+		}
+		if r := recover(); r != nil {
+			err = fmt.Errorf("[PANIC] recovered from panic: %v", r)
+		}
+	}()
+
+	token := Token
+	if token == "" || len(token) < 30 {
+		return
+	}
+
+	bot := echotron.NewAPI(token)
+
+	res, err := bot.GetMe()
+	if !res.Ok || err != nil {
+		log.Warnf("[Telegram] Unable to connect to bot.\n%v\n%v", res.Description, err)
+		return
+	}
+
+	BotMutex.Lock()
+	Bot = &bot
+	BotMutex.Unlock()
+
+	if LogLevel <= log.INFO {
+		fmt.Printf("[Telegram] Authorized as %s\n", res.Result.Username)
+	}
+
+	go func() {
+		for range ticker.C {
+			updateFloodWait()
+		}
+	}()
+
+	if !AllowConfRequest {
+		return
+	}
+
+	updatesChan := echotron.PollingUpdatesOptions(token, false, echotron.UpdateOptions{AllowedUpdates: []echotron.UpdateType{echotron.MessageUpdate}})
+	for update := range updatesChan {
+		if update.Message != nil {
+			userid := update.Message.Chat.ID
+			if _, wait := floodWait[userid]; wait {
+				if _, notified := floodMessageSent[userid]; notified {
+					continue
+				}
+				floodMessageSent[userid] = struct{}{}
+				_, err := bot.SendMessage(
+					fmt.Sprintf("You can only request your configs once per %d minutes", FloodWait),
+					userid,
+					&echotron.MessageOptions{
+						ReplyToMessageID: update.Message.ID,
+					})
+				if err != nil {
+					log.Errorf("Failed to send telegram message. Error %v", err)
+				}
+				continue
+			}
+			floodWait[userid] = time.Now().Unix()
+
+			failed := initDeps.SendRequestedConfigsToTelegram(initDeps.DB, userid)
+			if len(failed) > 0 {
+				messageText := "Failed to send configs:\n"
+				for _, f := range failed {
+					messageText += f + "\n"
+				}
+				_, err := bot.SendMessage(
+					messageText,
+					userid,
+					&echotron.MessageOptions{
+						ReplyToMessageID: update.Message.ID,
+					})
+				if err != nil {
+					log.Errorf("Failed to send telegram message. Error %v", err)
+				}
+			}
+		}
+	}
+	return err
+}
+
+func SendConfig(userid int64, clientName string, confData, qrData []byte, ignoreFloodWait bool) error {
+	BotMutex.RLock()
+	defer BotMutex.RUnlock()
+
+	if Bot == nil {
+		return fmt.Errorf("telegram bot is not configured or not available")
+	}
+
+	if _, wait := floodWait[userid]; wait && !ignoreFloodWait {
+		return fmt.Errorf("this client already got their config less than %d minutes ago", FloodWait)
+	}
+
+	if !ignoreFloodWait {
+		floodWait[userid] = time.Now().Unix()
+	}
+
+	qrAttachment := echotron.NewInputFileBytes("qr.png", qrData)
+	_, err := Bot.SendPhoto(qrAttachment, userid, &echotron.PhotoOptions{Caption: clientName})
+	if err != nil {
+		log.Error(err)
+		return fmt.Errorf("unable to send qr picture")
+	}
+
+	confAttachment := echotron.NewInputFileBytes(clientName+".conf", confData)
+	_, err = Bot.SendDocument(confAttachment, userid, nil)
+	if err != nil {
+		log.Error(err)
+		return fmt.Errorf("unable to send conf file")
+	}
+	return nil
+}
+
+func updateFloodWait() {
+	thresholdTS := time.Now().Unix() - 60*int64(FloodWait)
+	for userid, ts := range floodWait {
+		if ts < thresholdTS {
+			delete(floodWait, userid)
+			delete(floodMessageSent, userid)
+		}
+	}
+}

templates/about.html

@@ -0,0 +1,145 @@
+{{ define "title"}}
+About
+{{ end }}
+
+{{ define "top_css"}}
+{{ end }}
+
+{{ define "username"}}
+{{ .username }}
+{{ end }}
+
+{{ define "page_title"}}
+About
+{{ end }}
+
+{{ define "page_content"}}
+<section class="content">
+    <div class="container-fluid">
+        <!-- <h5 class="mt-4 mb-2">Global Settings</h5> -->
+        <div class="row">
+            <!-- left column -->
+            <div class="col-md-6">
+                <div class="card card-success">
+                    <div class="card-header">
+                        <h3 class="card-title">About Wireguard-UI</h3>
+                    </div>
+                    <!-- /.card-header -->
+                    <div class="card-body">
+                        <div class="form-group">
+                            <label for="version" class="control-label">Current version</label>
+                            <input type="text" class="form-control" id="version" value="{{ .appVersion }}" readonly>
+                        </div>
+{{ if .gitCommit }}
+                        <div class="form-group">
+                            <label for="version" class="control-label">git commit hash</label>
+                            <input type="text" class="form-control" id="version" value="{{ .gitCommit }}" readonly>
+                        </div>
+{{ end }}
+                        <div class="form-group">
+                            <label for="currentReleaseDate" class="control-label">Current version release date</label>
+                            <input type="text" class="form-control" id="currentReleaseDate" readonly>
+                        </div>
+                        <div class="form-group">
+                            <label for="latestRelease" class="control-label">Latest release</label>
+                            <input type="text" class="form-control" id="latestRelease" readonly>
+                        </div>
+                        <div class="form-group">
+                            <label for="latestReleaseDate" class="control-label">Latest release date</label>
+                            <input type="text" class="form-control" id="latestReleaseDate" readonly>
+                        </div>
+                        <div class="form-group">
+                            <label for="author" class="control-label">Author</label>
+                            <div id="author">
+                                <a id="authorLink">
+                                    <img id="authorImage"
+                                         style="width: 50px; height: 50px; border-radius: 50%; border: 1px solid #000;">
+                                </a>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="contributors" class="control-label">Contributors</label>
+                            <div id="contributors"></div>
+                        </div>
+                        <strong>Copyright &copy;
+                            <script>document.write(new Date().getFullYear())</script>
+                            <a href="https://github.com/ngoduykhanh/wireguard-ui">Wireguard UI</a>.
+                        </strong> All rights reserved.
+
+                    </div>
+                </div>
+                <!-- /.card -->
+            </div>
+        </div>
+        <!-- /.row -->
+    </div>
+</section>
+{{ end }}
+
+{{ define "bottom_js"}}
+<script>
+    $(document).ready(function () {
+
+        $.ajax({
+            cache: false,
+            method: 'GET',
+            url: 'https://api.github.com/repos/ngoduykhanh/wireguard-ui/releases/tags/' + $("#version").val(),
+            dataType: 'json',
+            contentType: "application/json",
+            success: function (data) {
+                $("#currentReleaseDate").attr("value", data.published_at.split("T")[0]);
+
+            },
+            error: function (jqXHR, exception) {
+                $("#currentReleaseDate").attr("value", "Could not find this version on GitHub.com");
+            }
+        });
+
+
+        $.ajax({
+            cache: false,
+            method: 'GET',
+            url: 'https://api.github.com/repos/ngoduykhanh/wireguard-ui/releases/latest',
+            dataType: 'json',
+            contentType: "application/json",
+            success: function (data) {
+                $("#latestRelease").attr("value", data.tag_name);
+                $("#latestReleaseDate").attr("value", data.published_at.split("T")[0]);
+                $("#author").attr("value", data.author.login);
+                $("#authorImage").attr("src", data.author.avatar_url);
+                $("#authorImage").after("<b>  " + data.author.login + "</b>");
+                $("#authorLink").attr("href", data.author.html_url);
+
+            },
+            error: function (jqXHR, exception) {
+                $("#latestRelease").attr("value", "Could not connect to GitHub.com");
+                $("#latestReleaseDate").attr("value", "Could not connect to GitHub.com");
+                $("#author").attr("value", "Could not connect to GitHub.com");
+            }
+        });
+
+        $.ajax({
+            cache: false,
+            method: 'GET',
+            url: 'https://api.github.com/repos/ngoduykhanh/wireguard-ui/contributors',
+            dataType: 'json',
+            contentType: "application/json",
+            success: function (data) {
+                data.forEach(contributor => $("#contributors").append("<a href=\"" + contributor.html_url + "\" title=\"" + contributor.login + "\">" +
+                    "<img src=\"" + contributor.avatar_url + "\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 1px solid #000; margin: 5px;\"/></a>"));
+            },
+            error: function (jqXHR, exception) {
+                $("#contributors").html("<p>Could not connect to GitHub.com</p>");
+            }
+        });
+    });
+
+    $(document).ajaxStop(function () {
+        if (Date.parse($("#currentReleaseDate").val()) < Date.parse($("#latestReleaseDate").val())) {
+            $("#currentReleaseDate").after("<p style=\"color:red\">Current version is out of date</p>")
+        }
+    });
+
+
+</script>
+{{ end }}

templates/base.html

@@ -8,21 +8,23 @@
     <title>{{template "title" .}}</title>
     <!-- Tell the browser to be responsive to screen width -->
     <meta name="viewport" content="width=device-width, initial-scale=1">
+    <!-- Favicon -->
+    <link rel="icon" href="{{.basePath}}/favicon">
 
     <!-- Font Awesome -->
-    <link rel="stylesheet" href="static/plugins/fontawesome-free/css/all.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/fontawesome-free/css/all.min.css">
     <!-- iCheck for checkboxes and radio inputs -->
-    <link rel="stylesheet" href="static/plugins/icheck-bootstrap/icheck-bootstrap.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/icheck-bootstrap/icheck-bootstrap.min.css">
     <!-- Select2 -->
-    <link rel="stylesheet" href="static/plugins/select2/css/select2.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/select2/css/select2.min.css">
     <!-- Toastr -->
-    <link rel="stylesheet" href="static/plugins/toastr/toastr.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/toastr/toastr.min.css">
     <!-- Jquery Tags Input -->
-    <link rel="stylesheet" href="static/plugins/jquery-tags-input/dist/jquery.tagsinput.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/jquery-tags-input/dist/jquery.tagsinput.min.css">
     <!-- Ionicons -->
     <link rel="stylesheet" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">
     <!-- overlayScrollbars -->
-    <link rel="stylesheet" href="static/dist/css/adminlte.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/dist/css/adminlte.min.css">
     <!-- Google Font: Source Sans Pro -->
     <link href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,400i,700" rel="stylesheet">
 
@@ -44,16 +46,27 @@
             </ul>
 
             <!-- SEARCH FORM -->
-            <form class="form-inline ml-3">
+            <form class="form-inline ml-3" style="display: none" id="search-form">
                 <div class="input-group input-group-sm">
-                    <input class="form-control form-control-navbar" type="search" placeholder="Search"
+                    <input class="form-control form-control-navbar" placeholder="Search"
-                        aria-label="Search">
+                        aria-label="Search" id="search-input">
                     <div class="input-group-append">
-                        <button class="btn btn-navbar" type="submit">
+                        <button class="btn-navbar" type="submit" disabled>
                             <i class="fas fa-search"></i>
                         </button>
                     </div>
                 </div>
+                <div class="form-group form-group-sm">
+                    <select name="status-selector" id="status-selector" class="custom-select form-control-navbar" style="margin-left: 0.5em; height: 90%; font-size: 14px;">
+                        <!-- THIS SECTION IS OVERRIDDEN BY JS. SEE updateSearchList() function in clients.html BEFORE EDITING -->
+                        <option value="All">All</option>
+                        <option value="Enabled">Enabled</option>
+                        <option value="Disabled">Disabled</option>
+                        <option value="Connected">Connected</option>
+                        <option value="Disconnected">Disconnected</option>
+                        <!-- THIS SECTION IS OVERRIDDEN BY JS. SEE updateSearchList() function in clients.html BEFORE EDITING -->
+                    </select>
+                </div>
             </form>
 
             <!-- Right navbar links -->
@@ -61,11 +74,11 @@
                 <button style="margin-left: 0.5em;" type="button" class="btn btn-outline-primary btn-sm" data-toggle="modal"
                     data-target="#modal_new_client"><i class="nav-icon fas fa-plus"></i> New
                     Client</button>
-                <button style="margin-left: 0.5em;" type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"
+                <button id="apply-config-button" style="margin-left: 0.5em; display: none;" type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"
                     data-target="#modal_apply_config"><i class="nav-icon fas fa-check"></i> Apply
                     Config</button>
                 {{if .baseData.CurrentUser}}
-                <button onclick="location.href='/logout';" style="margin-left: 0.5em;" type="button"
+                <button onclick="location.href='{{.basePath}}/logout';" style="margin-left: 0.5em;" type="button"
                     class="btn btn-outline-danger btn-sm"><i class="nav-icon fas fa-sign-out-alt"></i> Logout</button>
                 {{end}}
             </div>
@@ -75,10 +88,8 @@
         <!-- Main Sidebar Container -->
         <aside class="main-sidebar sidebar-dark-primary elevation-4">
             <!-- Brand Logo -->
-            <a href="/" class="brand-link">
+            <a href="{{.basePath}}" class="brand-link">
-                <!-- <img src="static/dist/img/logo.png" alt="Wireguard UI"
+                <span class="brand-text">&nbsp; WIREGUARD UI</span>
-                    class="brand-image img-circle elevation-3" style="opacity: .8"> -->
-                <span class="brand-text font-weight-light">WIREGUARD UI</span>
             </a>
 
             <!-- Sidebar -->
@@ -89,37 +100,91 @@
                         <i class="nav-icon fas fa-2x fa-user"></i>
                     </div>
                     <div class="info">
-                        <a href="#" class="d-block">{{if .baseData.CurrentUser}} {{.baseData.CurrentUser}} {{else}} Administrator {{end}}</a>
+                        {{if .baseData.CurrentUser}}
+
+                        {{if .baseData.Admin}}
+                        <a href="{{.basePath}}/profile" class="d-block">Administrator: {{.baseData.CurrentUser}}</a>
+                        {{else}}
+                        <a href="{{.basePath}}/profile" class="d-block">Manager: {{.baseData.CurrentUser}}</a>
+                        {{end}}
+
+                        {{else}}
+                        <a href="#" class="d-block">Administrator</a>
+                        {{end}}
                     </div>
                 </div>
 
                 <!-- Sidebar Menu -->
                 <nav class="mt-2">
                     <ul class="nav nav-pills nav-sidebar flex-column" data-widget="treeview" role="menu" data-accordion="false">
+                        <li class="nav-header">MAIN</li>
                         <li class="nav-item">
-                            <a href="/" class="nav-link {{if eq .baseData.Active ""}}active{{end}}">
+                            <a href="{{.basePath}}/" class="nav-link {{if eq .baseData.Active ""}}active{{end}}">
                                 <i class="nav-icon fas fa-user-secret"></i>
                                 <p>
                                     Wireguard Clients
                                 </p>
                             </a>
                         </li>
+
+                        {{if .baseData.Admin}}
                         <li class="nav-item">
-                            <a href="/wg-server" class="nav-link {{if eq .baseData.Active "wg-server" }}active{{end}}">
+                            <a href="{{.basePath}}/wg-server" class="nav-link {{if eq .baseData.Active "wg-server" }}active{{end}}">
                                 <i class="nav-icon fas fa-server"></i>
                                 <p>
                                     Wireguard Server
                                 </p>
                             </a>
                         </li>
+
+
+                        <li class="nav-header">SETTINGS</li>
                         <li class="nav-item">
-                            <a href="/global-settings" class="nav-link {{if eq .baseData.Active "global-settings" }}active{{end}}">
+                            <a href="{{.basePath}}/global-settings" class="nav-link {{if eq .baseData.Active "global-settings" }}active{{end}}">
                                 <i class="nav-icon fas fa-cog"></i>
                                 <p>
                                     Global Settings
                                 </p>
                             </a>
                         </li>
+                        {{if not .loginDisabled}}
+                        <li class="nav-item">
+                            <a href="{{.basePath}}/users-settings" class="nav-link {{if eq .baseData.Active "users-settings" }}active{{end}}">
+                            <i class="nav-icon fas fa-cog"></i>
+                            <p>
+                                Users Settings
+                            </p>
+                            </a>
+                        </li>
+                        {{end}}
+                        {{end}}
+
+                        <li class="nav-header">UTILITIES</li>
+                        <li class="nav-item">
+                            <a href="{{.basePath}}/status" class="nav-link {{if eq .baseData.Active "status" }}active{{end}}">
+                                <i class="nav-icon fas fa-signal"></i>
+                                <p>
+                                    Status
+                                </p>
+                            </a>
+                        </li>
+                        <li class="nav-item">
+                            <a href="{{.basePath}}/wake_on_lan_hosts" class="nav-link {{if eq .baseData.Active "wake_on_lan_hosts" }}active{{end}}">
+                                <i class="nav-icon fas  fa-solid fa-power-off"></i>
+                                <p>
+                                    WoL Hosts
+                                </p>
+                            </a>
+                        </li>
+                        <li class="nav-header">ABOUT</li>
+                        <li class="nav-item">
+                            <a href="{{.basePath}}/about" class="nav-link {{if eq .baseData.Active "about" }}active{{end}}">
+                            <i class="nav-icon fas  fa-solid fa-id-card"></i>
+                            <p>
+                                About
+                            </p>
+                            </a>
+                        </li>
                     </ul>
                 </nav>
                 <!-- /.sidebar-menu -->
@@ -146,18 +211,42 @@
                                 <label for="client_email" class="control-label">Email</label>
                                 <input type="text" class="form-control" id="client_email" name="client_email">
                             </div>
+                            <div class="form-group">
+                                <label for="subnet_ranges" class="control-label">Subnet range</label>
+                                <select id="subnet_ranges" class="select2"
+                                    data-placeholder="Select a subnet range" style="width: 100%;">
+                                </select>
+                            </div>
                             <div class="form-group">
                                 <label for="client_allocated_ips" class="control-label">IP Allocation</label>
                                 <input type="text" data-role="tagsinput" class="form-control" id="client_allocated_ips">
                             </div>
                             <div class="form-group">
-                                <label for="client_allowed_ips" class="control-label">Allowed IPs</label>
+                                <label for="client_allowed_ips" class="control-label">Allowed IPs
+                                    <i class="fas fa-info-circle" data-toggle="tooltip"
+                                       data-original-title="Specify a list of addresses that will get routed to the
+                                       server. These addresses will be included in 'AllowedIPs' of client config">
+                                    </i>
+                                </label>
                                 <input type="text" data-role="tagsinput" class="form-control" id="client_allowed_ips"
-                                    value="0.0.0.0/0">
+                                    value="{{ StringsJoin .client_defaults.AllowedIps "," }}">
+                            </div>
+                            <div class="form-group">
+                                <label for="client_extra_allowed_ips" class="control-label">Extra Allowed IPs
+                                    <i class="fas fa-info-circle" data-toggle="tooltip"
+                                       data-original-title="Specify a list of addresses that will get routed to the
+                                       client. These addresses will be included in 'AllowedIPs' of WG server config">
+                                    </i>
+                                </label>
+                                <input type="text" data-role="tagsinput" class="form-control" id="client_extra_allowed_ips" value="{{ StringsJoin .client_defaults.ExtraAllowedIps "," }}">
+                            </div>
+                            <div class="form-group">
+                                <label for="client_endpoint" class="control-label">Endpoint</label>
+                                <input type="text" class="form-control" id="client_endpoint" name="client_endpoint">
                             </div>
                             <div class="form-group">
                                 <div class="icheck-primary d-inline">
-                                    <input type="checkbox" id="use_server_dns" checked>
+                                    <input type="checkbox" id="use_server_dns" {{ if .client_defaults.UseServerDNS }}checked{{ end }}>
                                     <label for="use_server_dns">
                                         Use server DNS
                                     </label>
@@ -165,12 +254,45 @@
                             </div>
                             <div class="form-group">
                                 <div class="icheck-primary d-inline">
-                                    <input type="checkbox" id="enabled" checked>
+                                    <input type="checkbox" id="enabled" {{ if .client_defaults.EnableAfterCreation }}checked{{ end }}>
                                     <label for="enabled">
                                         Enable after creation
                                     </label>
                                 </div>
                             </div>
+                            <details>
+                                <summary><strong>Public and Preshared Keys</strong>
+                                    <i class="fas fa-info-circle" data-toggle="tooltip"
+                                       data-original-title="If you don't want to let the server generate and store the
+                                       client's private key, you can manually specify its public and preshared key here
+                                       . Note: QR code will not be generated">
+                                    </i>
+                                </summary>
+                                <div class="form-group" style="margin-top: 1rem">
+                                    <label for="client_public_key" class="control-label">
+                                        Public Key
+                                    </label>
+                                    <input type="text" class="form-control" id="client_public_key" name="client_public_key" placeholder="Autogenerated" aria-invalid="false">
+                                </div>
+                                <div class="form-group">
+                                    <label for="client_preshared_key" class="control-label">
+                                        Preshared Key
+                                    </label>
+                                    <input type="text" class="form-control" id="client_preshared_key" name="client_preshared_key" placeholder="Autogenerated - enter &quot;-&quot; to skip generation">
+                                </div>
+                            </details>
+                            <details style="margin-top: 0.5rem;">
+                                <summary><strong>Additional configuration</strong>
+                                </summary>
+                                <div class="form-group" style="margin-top: 0.5rem;">
+                                    <label for="client_telegram_userid" class="control-label">Telegram userid</label>
+                                    <input type="text" class="form-control" id="client_telegram_userid" name="client_telegram_userid">
+                                </div>
+                                <div class="form-group">
+                                    <label for="additional_notes" class="control-label">Notes</label>
+                                    <textarea class="form-control" style="min-height: 6rem;" id="additional_notes" name="additional_notes" placeholder="Additional notes about this client"></textarea>
+                                </div>
+                            </details>
                         </div>
                         <div class="modal-footer justify-content-between">
                             <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
@@ -225,15 +347,15 @@
             <!-- /.content -->
         </div>
         <!-- /.content-wrapper -->
-
+        <!--
         <footer class="main-footer">
             <div class="float-right d-none d-sm-block">
                 <b>Version</b> {{ .appVersion }}
             </div>
-            <strong>Copyright &copy; 2020 <a href="https://github.com/ngoduykhanh/wireguard-ui">Wireguard UI</a>.</strong> All rights
+            <strong>Copyright &copy; <script>document.write(new Date().getFullYear())</script> <a href="https://github.com/ngoduykhanh/wireguard-ui">Wireguard UI</a>.</strong> All rights
             reserved.
         </footer>
-
+        -->
         <!-- Control Sidebar -->
         <aside class="control-sidebar control-sidebar-dark">
             <!-- Control sidebar content goes here -->
@@ -243,29 +365,86 @@
     <!-- ./wrapper -->
 
     <!-- jQuery -->
-    <script src="static/plugins/jquery/jquery.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/jquery/jquery.min.js"></script>
     <!-- Bootstrap 4 -->
-    <script src="static/plugins/bootstrap/js/bootstrap.bundle.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/bootstrap/js/bootstrap.bundle.min.js"></script>
     <!-- Select2 -->
-    <script src="static/plugins/select2/js/select2.full.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/select2/js/select2.full.min.js"></script>
     <!-- jquery-validation -->
-    <script src="static/plugins/jquery-validation/jquery.validate.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/jquery-validation/jquery.validate.min.js"></script>
     <!-- Toastr -->
-    <script src="static/plugins/toastr/toastr.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/toastr/toastr.min.js"></script>
     <!-- Jquery Tags Input -->
-    <script src="static/plugins/jquery-tags-input/dist/jquery.tagsinput.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/jquery-tags-input/dist/jquery.tagsinput.min.js"></script>
     <!-- AdminLTE App -->
-    <script src="static/dist/js/adminlte.min.js"></script>
+    <script src="{{.basePath}}/static/dist/js/adminlte.min.js"></script>
     <!-- Custom js -->
-    <script src="static/custom/js/helper.js"></script>
+    <script src="{{.basePath}}/static/custom/js/helper.js"></script>
     <script>
+        // initialize all tooltips
+        $(function () {
+            $('[data-toggle="tooltip"]').tooltip()
+        })
+
+        $(document).ready(function () {
+
+            addGlobalStyle(`
+.toast-top-right-fix {
+    top: 67px;
+    right: 12px;
+}
+            `, 'toastrToastStyleFix')
+
+            toastr.options.closeDuration = 100;
+            // toastr.options.timeOut = 10000;
+            toastr.options.positionClass = 'toast-top-right-fix';
+
+            updateApplyConfigVisibility()
+
+        });
+
+        function addGlobalStyle(css, id) {
+            if (!document.querySelector('#' + id)) {
+                let head = document.head
+                if (!head) { return }
+                let style = document.createElement('style')
+                style.type = 'text/css'
+                style.id = id
+                style.innerHTML = css
+                head.appendChild(style)
+            }
+        }
+
+        function updateApplyConfigVisibility() {
+                $.ajax({
+                    cache: false,
+                    method: 'GET',
+                    url: '{{.basePath}}/test-hash',
+                    dataType: 'json',
+                    contentType: "application/json",
+                    success: function(data) {
+                        if (data.status) {
+                            $("#apply-config-button").show()
+                        }
+                        else
+                        {
+                            $("#apply-config-button").hide()
+                        }
+                    },
+                    error: function(jqXHR, exception) {
+                        const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                        toastr.error(responseJson['message']);
+                    }
+                });
+        }
+        
         // populateClient function for render new client info
         // on the client page.
         function populateClient(client_id) {
             $.ajax({
                 cache: false,
                 method: 'GET',
-                url: '/api/client/' + client_id,
+                url: '{{.basePath}}/api/client/' + client_id,
                 dataType: 'json',
                 contentType: "application/json",
                 success: function (resp) {
@@ -282,9 +461,17 @@
         function submitNewClient() {
             const name = $("#client_name").val();
             const email = $("#client_email").val();
+            const telegram_userid = $("#client_telegram_userid").val();
             const allocated_ips = $("#client_allocated_ips").val().split(",");
             const allowed_ips = $("#client_allowed_ips").val().split(",");
+            const endpoint = $("#client_endpoint").val();
             let use_server_dns = false;
+            let extra_allowed_ips = [];
+
+            if ($("#client_extra_allowed_ips").val() !== "") {
+                extra_allowed_ips = $("#client_extra_allowed_ips").val().split(",");
+            }
+
 
             if ($("#use_server_dns").is(':checked')){
                 use_server_dns = true;
@@ -295,14 +482,19 @@
             if ($("#enabled").is(':checked')){
                 enabled = true;
             }
+            const public_key = $("#client_public_key").val();
+            const preshared_key = $("#client_preshared_key").val();
             
-            const data = {"name": name, "email": email, "allocated_ips": allocated_ips, "allowed_ips": allowed_ips,
+            const additional_notes = $("#additional_notes").val();
-                "use_server_dns": use_server_dns, "enabled": enabled};
+
+            const data = {"name": name, "email": email, "telegram_userid": telegram_userid, "allocated_ips": allocated_ips, "allowed_ips": allowed_ips,
+                "extra_allowed_ips": extra_allowed_ips, "endpoint": endpoint, "use_server_dns": use_server_dns, "enabled": enabled,
+                "public_key": public_key, "preshared_key": preshared_key, "additional_notes": additional_notes};
 
             $.ajax({
                 cache: false,
                 method: 'POST',
-                url: '/new-client',
+                url: '{{.basePath}}/new-client',
                 dataType: 'json',
                 contentType: "application/json",
                 data: JSON.stringify(data),
@@ -310,9 +502,10 @@
                     $("#modal_new_client").modal('hide');
                     toastr.success('Created new client successfully');
                     // Update the home page (clients page) after adding successfully
-                    if (window.location.pathname === "/") {
+                    if (window.location.pathname === "{{.basePath}}/") {
                         populateClient(resp.id);
                     }
+                    updateApplyConfigVisibility()
                 },
                 error: function(jqXHR, exception) {
                     const responseJson = jQuery.parseJSON(jqXHR.responseText);
@@ -323,19 +516,32 @@
 
         // updateIPAllocationSuggestion function for automatically fill
         // the IP Allocation input with suggested ip addresses
-        function updateIPAllocationSuggestion() {
+        function updateIPAllocationSuggestion(forceDefault = false) {
+            let subnetRange = $("#subnet_ranges").select2('val');
+
+            if (forceDefault || !subnetRange || subnetRange.length === 0) {
+                subnetRange = '__default_any__'
+            }
             $.ajax({
                 cache: false,
                 method: 'GET',
-                url: '/api/suggest-client-ips',
+                url: `{{.basePath}}/api/suggest-client-ips?sr=${subnetRange}`,
                 dataType: 'json',
                 contentType: "application/json",
                 success: function(data) {
+                    const allocated_ips = $("#client_allocated_ips").val().split(",");
+                    allocated_ips.forEach(function (item, index) {
+                        $('#client_allocated_ips').removeTag(escape(item));
+                    })
                     data.forEach(function (item, index) {
                         $('#client_allocated_ips').addTag(item);
                     })
                 },
                 error: function(jqXHR, exception) {
+                    const allocated_ips = $("#client_allocated_ips").val().split(",");
+                    allocated_ips.forEach(function (item, index) {
+                        $('#client_allocated_ips').removeTag(escape(item));
+                    })
                     const responseJson = jQuery.parseJSON(jqXHR.responseText);
                     toastr.error(responseJson['message']);
                 }
@@ -354,6 +560,7 @@
             'defaultText': 'Add More',
             'removeWithBackspace': true,
             'minChars': 0,
+            'minInputWidth': '100%',
             'placeholderColor': '#666666'
         });
 
@@ -365,6 +572,18 @@
             'defaultText': 'Add More',
             'removeWithBackspace': true,
             'minChars': 0,
+            'minInputWidth': '100%',
+            'placeholderColor': '#666666'
+        });
+
+        $("#client_extra_allowed_ips").tagsInput({
+            'width': '100%',
+            'height': '75%',
+            'interactive': true,
+            'defaultText': 'Add More',
+            'removeWithBackspace': true,
+            'minChars': 0,
+            'minInputWidth': '100%',
             'placeholderColor': '#666666'
         });
 
@@ -380,19 +599,11 @@
                     client_name: {
                         required: true,
                     },
-                    client_email: {
-                        required: true,
-                        email: true,
-                    },
                 },
                 messages: {
                     client_name: {
                         required: "Please enter a name"
                     },
-                    client_email: {
-                        required: "Please enter an email address",
-                        email: "Please enter a valid email address"
-                    },
                 },
                 errorElement: 'span',
                 errorPlacement: function (error, element) {
@@ -413,21 +624,35 @@
             $("#modal_new_client").on('shown.bs.modal', function (e) {
                 $("#client_name").val("");
                 $("#client_email").val("");
+                $("#client_public_key").val("");
+                $("#client_preshared_key").val("");
                 $("#client_allocated_ips").importTags('');
-                updateIPAllocationSuggestion();
+                $("#client_extra_allowed_ips").importTags('');
+                $("#client_endpoint").val('');
+                $("#client_telegram_userid").val('');
+                $("#additional_notes").val('');
+                updateSubnetRangesList("#subnet_ranges");
+                updateIPAllocationSuggestion(true);
             });
         });
 
+        // handle subnet range select
+        $('#subnet_ranges').on('select2:select', function (e) {
+            // console.log('Selected Option: ', $("#subnet_ranges").select2('val'));
+            updateIPAllocationSuggestion();
+        });
+
         // apply_config_confirm button event
         $(document).ready(function () {
             $("#apply_config_confirm").click(function () {
                 $.ajax({
                     cache: false,
-                    method: 'GET',
+                    method: 'POST',
-                    url: '/api/apply-wg-config',
+                    url: '{{.basePath}}/api/apply-wg-config',
                     dataType: 'json',
                     contentType: "application/json",
                     success: function(data) {
+                        updateApplyConfigVisibility()
                         $("#modal_apply_config").modal('hide');
                         toastr.success('Applied config successfully');
                     },

templates/clients.html

@@ -30,6 +30,85 @@ Wireguard Clients
     </div>
 </section>
 
+<div class="modal fade" id="modal_email_client">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h4 class="modal-title">Email Configuration</h4>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <form name="frm_email_client" id="frm_email_client">
+                <div class="modal-body">
+                    <input type="hidden" id="e_client_id" name="e_client_id">
+                    <div class="form-group">
+                        <label for="e_client_email" class="control-label">Email address</label>
+                        <input type="text" class="form-control" id="e_client_email" name="e_client_email">
+                    </div>
+                </div>
+                <div class="modal-footer justify-content-between">
+                    <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                    <button type="submit" class="btn btn-success">Send</button>
+                </div>
+            </form>
+        </div>
+        <!-- /.modal-content -->
+    </div>
+    <!-- /.modal-dialog -->
+</div>
+<!-- /.modal -->
+
+<div class="modal fade" id="modal_qr_client">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h4 class="modal-title">QR Code</h4>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <div class="modal-body">
+                <input type="hidden" id="qr_client_id" name="qr_client_id">
+                <img id="qr_code" class="w-100" style="image-rendering: pixelated;" src="" alt="QR code" />
+                <!-- do not include FwMark in any client configs: it is INVALID. -->
+            </div>
+        </div>
+        <!-- /.modal-content -->
+    </div>
+    <!-- /.modal-dialog -->
+</div>
+<!-- /.modal -->
+
+<div class="modal fade" id="modal_telegram_client">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h4 class="modal-title">Telegram Configuration</h4>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <form name="frm_telegram_client" id="frm_telegram_client">
+                <div class="modal-body">
+                    <input type="hidden" id="tg_client_id" name="tg_client_id">
+                    <div class="form-group">
+                        <label for="tg_client_userid" class="control-label">Telegram userid</label>
+                        <input type="text" class="form-control" id="tg_client_userid" name="tg_client_userid">
+                    </div>
+                </div>
+                <div class="modal-footer justify-content-between">
+                    <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                    <button type="submit" class="btn btn-success">Send</button>
+                </div>
+            </form>
+        </div>
+        <!-- /.modal-content -->
+    </div>
+    <!-- /.modal-dialog -->
+</div>
+<!-- /.modal -->
+
 <div class="modal fade" id="modal_edit_client">
     <div class="modal-dialog">
         <div class="modal-content">
@@ -50,6 +129,12 @@ Wireguard Clients
                         <label for="_client_email" class="control-label">Email</label>
                         <input type="text" class="form-control" id="_client_email" name="client_email">
                     </div>
+                    <div class="form-group">
+                        <label for="_subnet_ranges" class="control-label">Subnet range</label>
+                        <select id="_subnet_ranges" class="select2"
+                            data-placeholder="Select a subnet range" style="width: 100%;">
+                        </select>
+                    </div>
                     <div class="form-group">
                         <label for="_client_allocated_ips" class="control-label">IP Allocation</label>
                         <input type="text" data-role="tagsinput" class="form-control" id="_client_allocated_ips">
@@ -58,6 +143,15 @@ Wireguard Clients
                         <label for="_client_allowed_ips" class="control-label">Allowed IPs</label>
                         <input type="text" data-role="tagsinput" class="form-control" id="_client_allowed_ips">
                     </div>
+                    <div class="form-group">
+                        <label for="_client_extra_allowed_ips" class="control-label">Extra Allowed IPs</label>
+                        <input type="text" data-role="tagsinput" class="form-control"
+                               id="_client_extra_allowed_ips">
+                    </div>
+                    <div class="form-group">
+                        <label for="_client_endpoint" class="control-label">Endpoint</label>
+                        <input type="text" class="form-control" id="_client_endpoint" name="client_endpoint">
+                    </div>
                     <div class="form-group">
                         <div class="icheck-primary d-inline">
                             <input type="checkbox" id="_use_server_dns">
@@ -74,6 +168,38 @@ Wireguard Clients
                             </label>
                         </div>
                     </div>
+                    <details>
+                        <summary><strong>Public and Preshared Keys</strong>
+                            <i class="fas fa-info-circle" data-toggle="tooltip"
+                               data-original-title="Update the server stored
+                               client Public and Preshared keys.">
+                            </i>
+                        </summary>
+                        <div class="form-group" style="margin-top: 1rem">
+                            <label for="_client_public_key" class="control-label">
+                                Public Key
+                            </label>
+                            <input type="text" class="form-control" id="_client_public_key" name="_client_public_key" aria-invalid="false">
+                        </div>
+                        <div class="form-group">
+                            <label for="_client_preshared_key" class="control-label">
+                                Preshared Key
+                            </label>
+                            <input type="text" class="form-control" id="_client_preshared_key" name="_client_preshared_key">
+                        </div>
+                    </details>
+                    <details style="margin-top: 0.5rem;">
+                        <summary><strong>Additional configuration</strong>
+                        </summary>
+                        <div class="form-group" style="margin-top: 0.5rem;">
+                            <label for="_client_telegram_userid" class="control-label">Telegram userid</label>
+                            <input type="text" class="form-control" id="_client_telegram_userid" name="_client_telegram_userid">
+                        </div>
+                        <div class="form-group">
+                            <label for="_additional_notes" class="control-label">Notes</label>
+                            <textarea class="form-control" style="min-height: 6rem;" id="_additional_notes" name="_additional_notes" placeholder="Additional notes about this client"></textarea>
+                        </div>
+                    </details>
                 </div>
                 <div class="modal-footer justify-content-between">
                     <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
@@ -138,7 +264,7 @@ Wireguard Clients
             $.ajax({
                 cache: false,
                 method: 'GET',
-                url: '/api/clients',
+                url: '{{.basePath}}/api/clients',
                 dataType: 'json',
                 contentType: "application/json",
                 success: function (data) {
@@ -156,7 +282,7 @@ Wireguard Clients
             $.ajax({
                 cache: false,
                 method: 'POST',
-                url: '/client/set-status',
+                url: '{{.basePath}}/client/set-status',
                 dataType: 'json',
                 contentType: "application/json",
                 data: JSON.stringify(data),
@@ -174,20 +300,219 @@ Wireguard Clients
             setClientStatus(clientID, true);
             const divElement = document.getElementById("paused_" + clientID);
             divElement.style.visibility = "hidden";
+            updateApplyConfigVisibility()
         }
 
         function pauseClient(clientID) {
             setClientStatus(clientID, false);
             const divElement = document.getElementById("paused_" + clientID);
             divElement.style.visibility = "visible";
+            updateApplyConfigVisibility()
+        }
+
+        // updateIPAllocationSuggestion function for automatically fill
+        // the IP Allocation input with suggested ip addresses
+        // FOR CHANGING A SUBNET OF AN EXISTING CLIENT
+        function updateIPAllocationSuggestionExisting() {
+            let subnetRange = $("#_subnet_ranges").select2('val');
+
+            if (!subnetRange || subnetRange.length === 0) {
+                subnetRange = '__default_any__'
+            }
+            $.ajax({
+                cache: false,
+                method: 'GET',
+                url: `{{.basePath}}/api/suggest-client-ips?sr=${subnetRange}`,
+                dataType: 'json',
+                contentType: "application/json",
+                success: function(data) {
+                    const allocated_ips = $("#_client_allocated_ips").val().split(",");
+                    allocated_ips.forEach(function (item, index) {
+                        $('#_client_allocated_ips').removeTag(escape(item));
+                    })
+                    data.forEach(function (item, index) {
+                        $('#_client_allocated_ips').addTag(item);
+                    })
+                },
+                error: function(jqXHR, exception) {
+                    const allocated_ips = $("#_client_allocated_ips").val().split(",");
+                    allocated_ips.forEach(function (item, index) {
+                        $('#_client_allocated_ips').removeTag(escape(item));
+                    })
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        }
+
+        function updateSubnetRangesList(elementID, preselectedVal) {
+            $.getJSON("{{.basePath}}/api/subnet-ranges", null, function(data) {
+                $(`${elementID} option`).remove();
+                $(elementID).append(
+                    $("<option></option>")
+                        .text("Any")
+                        .val("__default_any__")
+                );
+                $.each(data, function(index, item) {
+                    $(elementID).append(
+                        $("<option></option>")
+                            .text(item)
+                            .val(item)
+                    );
+                    if (item === preselectedVal) {
+                        console.log(preselectedVal);
+                        $(elementID).val(preselectedVal).trigger('change')
+                    }
+                });
+            });
+        }
+
+        function updateSearchList() {
+            $.getJSON("{{.basePath}}/api/subnet-ranges", null, function(data) {
+                $("#status-selector option").remove();
+                $("#status-selector").append(
+                    $("<option></option>")
+                        .text("All")
+                        .val("All"),
+                    $("<option></option>")
+                        .text("Enabled")
+                        .val("Enabled"),
+                    $("<option></option>")
+                        .text("Disabled")
+                        .val("Disabled"),
+                    $("<option></option>")
+                        .text("Connected")
+                        .val("Connected"),
+                    $("<option></option>")
+                        .text("Disconnected")
+                        .val("Disconnected")
+                );
+                $.each(data, function(index, item) {
+                    $("#status-selector").append(
+                        $("<option></option>")
+                            .text(item)
+                            .val(item)
+                    );
+                });
+            });
         }
     </script>
     <script>
         // load client list
         $(document).ready(function () {
+            updateSearchList();
             populateClientList();
         })
 
+        // show search bar and override :contains to be case-insensitive
+        $(document).ready(function () {
+            $("#search-form").show();
+            jQuery.expr[':'].contains = function(a, i, m) {
+                return jQuery(a).text().toUpperCase()
+                    .indexOf(m[3].toUpperCase()) >= 0;
+            };
+        })
+
+        // hide all clients and display only the ones that meet the search criteria (name, email, IP)
+        $('#search-input').keyup(function () {
+            $("#status-selector").val("All");
+            let query = $(this).val().trim();
+            $('.col-lg-4').hide();
+            $(".info-box-text").each(function() {
+                if($(this).children('i.fa-user').length > 0 || $(this).children('i.fa-envelope').length > 0)
+                {
+                    $(this).filter(':contains("' + query + '")').parent().parent().parent().show();
+                }
+                })
+            $(".badge-secondary").filter(':contains("' + query + '")').parent().parent().parent().show();
+            $(".fa-tguserid").each(function () {
+                if ($(this).parent().text().trim().indexOf(query) != -1) {
+                    $(this).closest('.col-lg-4').show();
+                }
+            })
+            let upperQuery = query.toUpperCase()
+            $(".fa-additional_notes").each(function () {
+                if ($(this).parent().text().trim().indexOf(upperQuery) != -1) {
+                    $(this).closest('.col-lg-4').show();
+                }
+            })
+        })
+
+        $("#status-selector").on('change', function () {
+            $('#search-input').val("");
+            switch ($("#status-selector").val()) {
+                case "All":
+                    $('.col-lg-4').show();
+                    break;
+                case "Enabled":
+                    $('.col-lg-4').hide();
+                    $('[id^="paused_"]').each(function () {
+                        if ($(this).css("visibility") === "hidden") {
+                            $(this).parent().parent().show();
+                        }
+                    });
+                    break;
+                case "Disabled":
+                    $('.col-lg-4').hide();
+                    $('[id^="paused_"]').each(function () {
+                        if ($(this).css("visibility") !== "hidden") {
+                            $(this).parent().parent().show();
+                        }
+                    });
+                    break;
+                case "Connected":
+                    $('.col-lg-4').hide();
+                    $.ajax({
+                        cache: false,
+                        method: 'GET',
+                        url: '{{.basePath}}/status',
+                        success: function (data) {
+                            const returnedHTML = $(data).find(".table-success").get();
+                            var returnedString = "";
+                            returnedHTML.forEach(entry => returnedString += entry.outerHTML);
+                            $(".fa-key").each(function () {
+                                if (returnedString.indexOf($(this).parent().text().trim()) != -1) {
+                                    $(this).closest('.col-lg-4').show();
+                                }
+                            })
+                        }
+                    });
+                    break;
+                case "Disconnected":
+                    $('.col-lg-4').show();
+                    $.ajax({
+                        cache: false,
+                        method: 'GET',
+                        url: '{{.basePath}}/status',
+                        success: function (data) {
+                            const returnedHTML = $(data).find(".table-success").get();
+                            var returnedString = "";
+                            returnedHTML.forEach(entry => returnedString += entry.outerHTML);
+                            $(".fa-key").each(function () {
+                                if (returnedString.indexOf($(this).parent().text().trim()) != -1) {
+                                    $(this).closest('.col-lg-4').hide();
+                                }
+                            })
+                        }
+                    });
+                    break;
+                default:
+                    $('.col-lg-4').hide();
+                    const selectedSR = $("#status-selector").val()
+                    $(".fa-subnetrange").each(function () {
+                        const srs = $(this).parent().text().trim().split(',')
+                        for (const sr of srs) {
+                            if (sr === selectedSR) {
+                                $(this).closest('.col-lg-4').show();
+                                break
+                            }                            
+                        }
+                    })
+                    // $('.col-lg-4').show();
+                    break;
+            }
+        });
+
         // modal_pause_client modal event
         $("#modal_pause_client").on('show.bs.modal', function (event) {
             const button = $(event.relatedTarget);
@@ -225,7 +550,7 @@ Wireguard Clients
                 $.ajax({
                     cache: false,
                     method: 'POST',
-                    url: '/remove-client',
+                    url: '{{.basePath}}/remove-client',
                     dataType: 'json',
                     contentType: "application/json",
                     data: JSON.stringify(data),
@@ -234,6 +559,7 @@ Wireguard Clients
                         toastr.success('Removed client successfully');
                         const divElement = document.getElementById('client_' + client_id);
                         divElement.style.display = "none";
+                        updateApplyConfigVisibility()
                     },
                     error: function(jqXHR, exception) {
                         const responseJson = jQuery.parseJSON(jqXHR.responseText);
@@ -243,9 +569,12 @@ Wireguard Clients
             });
         });
 
+
+
         // Edit client modal event
+        // This fills the modal dialogue with data from the DB when we open the edit menu
         $(document).ready(function () {
-            $("#modal_edit_client").on('shown.bs.modal', function (event) {
+            $("#modal_edit_client").on('show.bs.modal', function (event) {
                 let modal = $(this);
                 const button = $(event.relatedTarget);
                 const client_id = button.data('clientid');
@@ -258,6 +587,7 @@ Wireguard Clients
                     'defaultText': 'Add More',
                     'removeWithBackspace': true,
                     'minChars': 0,
+                    'minInputWidth': '100%',
                     'placeholderColor': '#666666'
                 });
 
@@ -269,14 +599,26 @@ Wireguard Clients
                     'defaultText': 'Add More',
                     'removeWithBackspace': true,
                     'minChars': 0,
+                    'minInputWidth': '100%',
                     'placeholderColor': '#666666'
                 });
 
+                modal.find("#_client_extra_allowed_ips").tagsInput({
+                    'width': '100%',
+                    'height': '75%',
+                    'interactive': true,
+                    'defaultText': 'Add More',
+                    'removeWithBackspace' : true,
+                    'minChars': 0,
+                    'minInputWidth': '100%',
+                    'placeholderColor': '#666666'
+                })
+
                 // update client modal data
                 $.ajax({
                     cache: false,
                     method: 'GET',
-                    url: '/api/client/' + client_id,
+                    url: '{{.basePath}}/api/client/' + client_id,
                     dataType: 'json',
                     contentType: "application/json",
                     success: function (resp) {
@@ -284,9 +626,17 @@ Wireguard Clients
 
                         modal.find(".modal-title").text("Edit Client " + client.name);
                         modal.find("#_client_id").val(client.id);
+                        modal.find("#_client_telegram_userid").val(client.telegram_userid);
                         modal.find("#_client_name").val(client.name);
                         modal.find("#_client_email").val(client.email);
 
+                        let preselectedEl
+                        if (client.subnet_ranges && client.subnet_ranges.length > 0) {
+                            preselectedEl = client.subnet_ranges[0]
+                        }
+
+                        updateSubnetRangesList("#_subnet_ranges", preselectedEl);
+
                         modal.find("#_client_allocated_ips").importTags('');
                         client.allocated_ips.forEach(function (obj) {
                             modal.find("#_client_allocated_ips").addTag(obj);
@@ -297,8 +647,25 @@ Wireguard Clients
                             modal.find("#_client_allowed_ips").addTag(obj);
                         });
 
+                        modal.find("#_client_extra_allowed_ips").importTags('');
+                        client.extra_allowed_ips.forEach(function (obj) {
+                            modal.find("#_client_extra_allowed_ips").addTag(obj);
+                        });
+
+                        modal.find("#_client_endpoint").val(client.endpoint);
+
                         modal.find("#_use_server_dns").prop("checked", client.use_server_dns);
                         modal.find("#_enabled").prop("checked", client.enabled);
+
+                        modal.find("#_client_public_key").val(client.public_key);
+                        modal.find("#_client_preshared_key").val(client.preshared_key);
+                        
+                        modal.find("#_additional_notes").val(client.additional_notes);
+
+                        // handle subnet range select
+                        $('#_subnet_ranges').on('select2:select', function (e) {
+                            updateIPAllocationSuggestionExisting();
+                        });
                     },
                     error: function (jqXHR, exception) {
                         const responseJson = jQuery.parseJSON(jqXHR.responseText);
@@ -308,14 +675,102 @@ Wireguard Clients
             });
         });
 
+        // regenerateQRCode function for regenerating QR Code adding/removing some parts of configuration because of compatibility issues with some clients
+        function regenerateQRCode() {
+            const client_id = $("#qr_client_id").val();
+            const QRCodeImg = $("#qr_code");
+            const QRCodeA = $("#qr_code_a");
+            QRCodeImg.hide();
+            $.ajax({
+                cache: false,
+                method: 'GET',
+                url: '{{.basePath}}/api/client/' + client_id,
+                data: {
+
+                },
+                dataType: 'json',
+                contentType: "application/json",
+                success: function (resp) {
+                    const client = resp.Client;
+
+                    $(".modal-title").text("Scan QR Code for " + client.name + " profile");
+                    QRCodeImg.attr('src', resp.QRCode).show();
+                    QRCodeA.attr('download', resp.Client.name);
+                    QRCodeA.attr('href', resp.QRCode).show();
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        }
+
+        // submitEmailClient function for sending an email with the configuration to the client
+        function submitEmailClient() {
+            const client_id = $("#e_client_id").val();
+            const email = $("#e_client_email").val();
+            const data = {"id": client_id, "email": email};
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: '{{.basePath}}/email-client',
+                dataType: 'json',
+                contentType: "application/json",
+                data: JSON.stringify(data),
+                success: function(resp) {
+                    $("#modal_email_client").modal('hide');
+                    toastr.success('Sent email to client successfully');
+                },
+                error: function(jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        }
+
+        // submitTelegramClient function for sending a telegram message with the configuration to the client
+        function submitTelegramClient() {
+            const client_id = $("#tg_client_id").val();
+            const userid = $("#tg_client_userid").val();
+            const data = {"id": client_id, "userid": userid};
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: '{{.basePath}}/send-telegram-client',
+                dataType: 'json',
+                contentType: "application/json",
+                data: JSON.stringify(data),
+                success: function(resp) {
+                    $("#modal_telegram_client").modal('hide');
+                    toastr.success('Sent config via telegram to client successfully');
+                },
+                error: function(jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        }
+
         // submitEditClient function for updating an existing client
+        // This sends dialogue data to the back-end when user presses "Save"
+        // See e.g. routes.go:UpdateClient for where data is processed/verified.
         function submitEditClient() {
             const client_id = $("#_client_id").val();
             const name = $("#_client_name").val();
             const email = $("#_client_email").val();
+            const telegram_userid = $("#_client_telegram_userid").val();
             const allocated_ips = $("#_client_allocated_ips").val().split(",");
             const allowed_ips = $("#_client_allowed_ips").val().split(",");
             let use_server_dns = false;
+            let extra_allowed_ips = [];
+            const public_key = $("#_client_public_key").val();
+            const preshared_key = $("#_client_preshared_key").val();
+
+            if( $("#_client_extra_allowed_ips").val() !== "" ) {
+                extra_allowed_ips = $("#_client_extra_allowed_ips").val().split(",");
+            }
+
+            const endpoint = $("#_client_endpoint").val();
 
             if ($("#_use_server_dns").is(':checked')){
                 use_server_dns = true;
@@ -327,13 +782,16 @@ Wireguard Clients
                 enabled = true;
             }
 
-            const data = {"id": client_id, "name": name, "email": email, "allocated_ips": allocated_ips,
+            const additional_notes = $("#_additional_notes").val();
-                "allowed_ips": allowed_ips, "use_server_dns": use_server_dns, "enabled": enabled};
+
+            const data = {"id": client_id, "name": name, "email": email, "telegram_userid": telegram_userid, "allocated_ips": allocated_ips,
+                "allowed_ips": allowed_ips, "extra_allowed_ips": extra_allowed_ips, "endpoint": endpoint,
+                "use_server_dns": use_server_dns, "enabled": enabled, "public_key": public_key, "preshared_key": preshared_key, "additional_notes": additional_notes};
 
             $.ajax({
                 cache: false,
                 method: 'POST',
-                url: '/update-client',
+                url: '{{.basePath}}/update-client',
                 dataType: 'json',
                 contentType: "application/json",
                 data: JSON.stringify(data),
@@ -350,31 +808,92 @@ Wireguard Clients
             });
         }
 
-        // Edit client form validation
+        // submitHandler
-        $(document).ready(function () {
+        function submitHandler(form) {
-            $.validator.setDefaults({
+            const formId = $(form).attr('id');
-                submitHandler: function () {
+            if (formId === "frm_edit_client") {
-                    submitEditClient();
+                submitEditClient();
+            } else if (formId === "frm_email_client") {
+                submitEmailClient();
+            } else if (formId === "frm_telegram_client") {
+                submitTelegramClient();
+            }
+        }
+
+        $("#modal_email_client").on('show.bs.modal', function (event) {
+            let modal = $(this);
+            const button = $(event.relatedTarget);
+            const client_id = button.data('clientid');
+            $.ajax({
+                cache: false,
+                method: 'GET',
+                url: '{{.basePath}}/api/client/' + client_id,
+                dataType: 'json',
+                contentType: "application/json",
+                success: function (resp) {
+                    const client = resp.Client;
+
+                    modal.find(".modal-title").text("Send config to client " + client.name);
+                    modal.find("#e_client_id").val(client.id);
+                    modal.find("#e_client_email").val(client.email);
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
                 }
             });
+        });
+
+        $("#modal_qr_client").on('show.bs.modal', function (event) {
+            let modal = $(this);
+            const button = $(event.relatedTarget);
+            const client_id = button.data('clientid');
+
+            modal.find("#qr_client_id").val(client_id);
+            regenerateQRCode();
+        });
+
+        $("#modal_telegram_client").on('show.bs.modal', function (event) {
+            let modal = $(this);
+            const button = $(event.relatedTarget);
+            const client_id = button.data('clientid');
+            $.ajax({
+                cache: false,
+                method: 'GET',
+                url: '{{.basePath}}/api/client/' + client_id,
+                dataType: 'json',
+                contentType: "application/json",
+                success: function (resp) {
+                    const client = resp.Client;
+
+                    modal.find(".modal-title").text("Send config to client " + client.name);
+                    modal.find("#tg_client_id").val(client.id);
+                    modal.find("#tg_client_userid").val(client.telegram_userid);
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        });
+
+        $(document).ready(function () {
+            $.validator.setDefaults({
+                submitHandler: function (form) {
+                    submitHandler(form);
+                }
+            });
+            // Edit client form validation
             $("#frm_edit_client").validate({
                 rules: {
                     client_name: {
                         required: true,
                     },
-                    client_email: {
-                        required: true,
-                        email: true,
-                    },
                 },
                 messages: {
                     client_name: {
                         required: "Please enter a name"
                     },
-                    client_email: {
-                        required: "Please enter an email address",
-                        email: "Please enter a valid email address"
-                    },
                 },
                 errorElement: 'span',
                 errorPlacement: function (error, element) {
@@ -388,6 +907,58 @@ Wireguard Clients
                     $(element).removeClass('is-invalid');
                 }
             });
+            // Email client form validation
+            $("#frm_email_client").validate({
+                rules: {
+                    e_client_email: {
+                        required: true,
+                        email: true,
+                    },
+                },
+                messages: {
+                    e_client_email: {
+                        required: "Please enter an email"
+                    },
+                },
+                errorElement: 'span',
+                errorPlacement: function (error, element) {
+                    error.addClass('invalid-feedback');
+                    element.closest('.form-group').append(error);
+                },
+                highlight: function (element, errorClass, validClass) {
+                    $(element).addClass('is-invalid');
+                },
+                unhighlight: function (element, errorClass, validClass) {
+                    $(element).removeClass('is-invalid');
+                }
+            });
+            // Telegram client form validation
+            $("#frm_telegram_client").validate({
+                rules: {
+                    tg_client_userid: {
+                        required: true,
+                        number: true,
+                    },
+                },
+                messages: {
+                    tg_client_userid: {
+                        required: "Please enter a telegram userid",
+                        number: "Please enter a valid telegram userid"
+                    },
+                },
+                errorElement: 'span',
+                errorPlacement: function (error, element) {
+                    error.addClass('invalid-feedback');
+                    element.closest('.form-group').append(error);
+                },
+                highlight: function (element, errorClass, validClass) {
+                    $(element).addClass('is-invalid');
+                },
+                unhighlight: function (element, errorClass, validClass) {
+                    $(element).removeClass('is-invalid');
+                }
+            });
+            // 
         });
     </script>
 {{end}}

templates/global_settings.html

@@ -47,13 +47,25 @@ Global Settings
                             <div class="form-group">
                                 <label for="mtu">MTU</label>
                                 <input type="text" class="form-control" id="mtu" name="mtu" placeholder="MTU"
-                                    value="{{ .globalSettings.MTU }}">
+                                    value="{{if .globalSettings.MTU}}{{ .globalSettings.MTU }}{{end}}">
                             </div>
                             <div class="form-group">
                                 <label for="persistent_keepalive">Persistent Keepalive</label>
                                 <input type="text" class="form-control" id="persistent_keepalive"
                                     name="persistent_keepalive" placeholder="Persistent Keepalive"
-                                    value="{{ .globalSettings.PersistentKeepalive }}">
+                                    value="{{if .globalSettings.PersistentKeepalive }}{{ .globalSettings.PersistentKeepalive }}{{end}}">
+                            </div>
+                            <div class="form-group">
+                                <label for="firewall_mark">Firewall Mark</label>
+                                <input type="text" class="form-control" id="firewall_mark"
+                                    name="firewall_mark" placeholder="Firewall Mark"
+                                    value="{{ .globalSettings.FirewallMark }}">
+                            </div>
+                            <div class="form-group">
+                                <label for="Table">Table</label>
+                                <input type="text" class="form-control" id="table"
+                                    name="table" placeholder="auto"
+                                    value="{{ .globalSettings.Table }}">
                             </div>
                             <div class="form-group">
                                 <label for="config_file_path">Wireguard Config File Path</label>
@@ -71,6 +83,41 @@ Global Settings
                 </div>
                 <!-- /.card -->
             </div>
+            <div class="col-md-6">
+                <div class="card card-success">
+                    <div class="card-header">
+                        <h3 class="card-title">Help</h3>
+                    </div>
+                    <!-- /.card-header -->
+                    <div class="card-body">
+                        <dl>
+                            <dt>1. Endpoint Address</dt>
+                            <dd>The public IP address of your Wireguard server that the client will connect to. Click on
+                                <strong>Suggest</strong> button to auto detect the public IP address of your server.</dd>
+                            <dt>2. DNS Servers</dt>
+                            <dd>The DNS servers will be set to client config.</dd>
+                            <dt>3. MTU</dt>
+                            <dd>The MTU will be set to server and client config. By default it is <code>1450</code>. You might want
+                                to adjust the MTU size if your connection (e.g PPPoE, 3G, satellite network, etc) has a low MTU.</dd>
+                            <dd>Leave blank to omit this setting in the configs.</dd>
+                            <dt>4. Persistent Keepalive</dt>
+                            <dd>By default, WireGuard peers remain silent while they do not need to communicate,
+                                so peers located behind a NAT and/or firewall may be unreachable from other peers
+                                until they reach out to other peers themselves. Adding <code>PersistentKeepalive</code>
+                                can ensure that the connection remains open.</dd>
+                            <dd>Leave blank to omit this setting in the Client config.</dd>
+                            <dt>5. Firewall Mark</dt>
+                            <dd>Add a matching <code>fwmark</code> on all packets going out of a WireGuard non-default-route tunnel. Default value: <code>0xca6c</code></dd>
+                            <dt>6. Table</dt>
+                            <dd>Value for the <code>Table</code> setting in the wg conf file. Default value: <code>auto</code></dd>                            
+                            <dt>7. Wireguard Config File Path</dt>
+                            <dd>The path of your Wireguard server config file. Please make sure the parent directory
+                                exists and is writable.</dd>
+                        </dl>
+                    </div>
+                </div>
+                <!-- /.card -->
+            </div>
         </div>
         <!-- /.row -->
     </div>
@@ -110,13 +157,15 @@ Global Settings
             const dns_servers = $("#dns_servers").val().split(",");
             const mtu = $("#mtu").val();
             const persistent_keepalive = $("#persistent_keepalive").val();
+            const firewall_mark = $("#firewall_mark").val();
+            const table = $("#table").val();
             const config_file_path = $("#config_file_path").val();
-            const data = {"endpoint_address": endpoint_address, "dns_servers": dns_servers, "mtu": mtu, "persistent_keepalive": persistent_keepalive, "config_file_path": config_file_path};
+            const data = {"endpoint_address": endpoint_address, "dns_servers": dns_servers, "mtu": mtu, "persistent_keepalive": persistent_keepalive, "firewall_mark": firewall_mark, "table": table, "config_file_path": config_file_path};
 
             $.ajax({
                 cache: false,
                 method: 'POST',
-                url: '/global-settings',
+                url: '{{.basePath}}/global-settings',
                 dataType: 'json',
                 contentType: "application/json",
                 data: JSON.stringify(data),
@@ -132,7 +181,7 @@ Global Settings
         }
 
         function updateEndpointSuggestionIP() {
-            $.getJSON("/api/machine-ips", null, function(data) {
+            $.getJSON("{{.basePath}}/api/machine-ips", null, function(data) {
                 $("#ip_suggestion option").remove();
                 $.each(data, function(index, item) {
                     $("#ip_suggestion").append(
@@ -154,11 +203,13 @@ Global Settings
             'defaultText': 'Add More',
             'removeWithBackspace': true,
             'minChars': 0,
+            'minInputWidth': '100%',
             'placeholderColor': '#666666'
         });
 
         // Load DNS server to the form
         {{range .globalSettings.DNSServers}}
+        $("#dns_servers").removeTag('{{.}}');
         $("#dns_servers").addTag('{{.}}');
         {{end}}
 
@@ -172,26 +223,28 @@ Global Settings
             $("#frm_global_settings").validate({
                 rules: {
                     mtu: {
-                        required: true,
                         digits: true,
                         range: [68, 65535]
                     },
                     persistent_keepalive: {
-                        required: true,
                         digits: true
                     },
                     config_file_path: {
                         required: true
+                    },
+                    firewall_mark: {
+                        required: false
+                    },
+                    table: {
+                        required: false
                     }
                 },
                 messages: {
                     mtu: {
-                        required: "Please enter a MTU value",
                         digits: "MTU must be an integer",
                         range: "MTU must be in range 68..65535"
                     },
                     persistent_keepalive: {
-                        required: "Please enter a Persistent Keepalive value",
                         digits: "Persistent keepalive must be an integer"
                     },
                     config_file_path: {

templates/login.html

@@ -7,15 +7,17 @@
     <title>WireGuard UI</title>
     <!-- Tell the browser to be responsive to screen width -->
     <meta name="viewport" content="width=device-width, initial-scale=1">
+    <!-- Favicon -->
+    <link rel="icon" href="{{.basePath}}/favicon">
 
     <!-- Font Awesome -->
-    <link rel="stylesheet" href="static/plugins/fontawesome-free/css/all.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/fontawesome-free/css/all.min.css">
     <!-- Ionicons -->
     <link rel="stylesheet" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">
     <!-- icheck bootstrap -->
-    <link rel="stylesheet" href="static/plugins/icheck-bootstrap/icheck-bootstrap.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/plugins/icheck-bootstrap/icheck-bootstrap.min.css">
     <!-- Theme style -->
-    <link rel="stylesheet" href="static/dist/css/adminlte.min.css">
+    <link rel="stylesheet" href="{{.basePath}}/static/dist/css/adminlte.min.css">
     <!-- Google Font: Source Sans Pro -->
     <link href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,400i,700" rel="stylesheet">
 </head>
@@ -57,7 +59,7 @@
                         </div>
                         <!-- /.col -->
                         <div class="col-4">
-                            <button id="btn_login" type="button" class="btn btn-primary btn-block">Sign In</button>
+                            <button id="btn_login" type="submit" class="btn btn-primary btn-block">Sign In</button>
                         </div>
                         <!-- /.col -->
                     </div>
@@ -71,36 +73,44 @@
     </div>
     <!-- /.login-box -->
     <!-- jQuery -->
-    <script src="static/plugins/jquery/jquery.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/jquery/jquery.min.js"></script>
     <!-- Bootstrap 4 -->
-    <script src="static/plugins/bootstrap/js/bootstrap.bundle.min.js"></script>
+    <script src="{{.basePath}}/static/plugins/bootstrap/js/bootstrap.bundle.min.js"></script>
     <!-- AdminLTE App -->
-    <script src="static/dist/js/adminlte.min.js"></script>
+    <script src="{{.basePath}}/static/dist/js/adminlte.min.js"></script>
 
 </body>
 <script>
     function redirectNext() {
         const urlParams = new URLSearchParams(window.location.search);
         const nextURL = urlParams.get('next');
-        if (nextURL) {
+        if (nextURL && /(?:^\/[a-zA-Z_])|(?:^\/$)/.test(nextURL.trim())) {
             window.location.href = nextURL;
         } else {
-            window.location.href = '/';
+            window.location.href = '/{{.basePath}}';
         } 
     }
 </script>
 <script>
     $(document).ready(function () {
+        $('form').on('submit', function(e) {
+            e.preventDefault();
+            $("#btn_login").trigger('click');
+        });
+
         $("#btn_login").click(function () {
             const username = $("#username").val();
             const password = $("#password").val();
-            const data = {"username": username, "password": password}
+            let rememberMe = false;
-            console.log(data);
+            if ($("#remember").is(':checked')){
+                rememberMe = true;
+            }
+            const data = {"username": username, "password": password, "rememberMe": rememberMe}
 
             $.ajax({
                 cache: false,
                 method: 'POST',
-                url: '/login',
+                url: '{{.basePath}}/login',
                 dataType: 'json',
                 contentType: "application/json",
                 data: JSON.stringify(data),

templates/profile.html

@@ -0,0 +1,136 @@
+{{ define "title"}}
+Profile
+{{ end }}
+
+{{ define "top_css"}}
+{{ end }}
+
+{{ define "username"}}
+{{ .username }}
+{{ end }}
+
+{{ define "page_title"}}
+Profile
+{{ end }}
+
+{{ define "page_content"}}
+<section class="content">
+    <div class="container-fluid">
+        <!-- <h5 class="mt-4 mb-2">Global Settings</h5> -->
+        <div class="row">
+            <!-- left column -->
+            <div class="col-md-6">
+                <div class="card card-success">
+                    <div class="card-header">
+                        <h3 class="card-title">Update user information</h3>
+                    </div>
+                    <!-- /.card-header -->
+                    <!-- form start -->
+                    <form role="form" id="frm_profile" name="frm_profile">
+                        <div class="card-body">
+                            <div class="form-group">
+                                <label for="username" class="control-label">Username</label>
+                                <input type="text" class="form-control" name="username" id="username"
+                                       value="">
+                            </div>
+                            <div class="form-group">
+                                <label for="password" class="control-label">Password</label>
+                                <input type="password" class="form-control" name="password" id="password"
+                                       value="" placeholder="Leave empty to keep the password unchanged">
+                            </div>
+                            <!-- /.card-body -->
+                            <div class="card-footer">
+                                <button type="submit" class="btn btn-success" id="update">Update</button>
+                            </div>
+                        </div>
+                    </form>
+                </div>
+                <!-- /.card -->
+            </div>
+        </div>
+        <!-- /.row -->
+    </div>
+</section>
+{{ end }}
+
+{{ define "bottom_js"}}
+<script>
+    {
+        var previous_username;
+        var admin;
+    }
+    $(document).ready(function () {
+        $.ajax({
+            cache: false,
+            method: 'GET',
+            url: '{{.basePath}}/api/user/{{.baseData.CurrentUser}}',
+            dataType: 'json',
+            contentType: "application/json",
+            success: function (resp) {
+                const user = resp;
+                $("#username").val(user.username);
+                previous_username = user.username;
+                admin = user.admin;
+            },
+            error: function (jqXHR, exception) {
+                const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                toastr.error(responseJson['message']);
+            }
+        });
+    });
+
+
+    function updateUserInfo() {
+        const username = $("#username").val();
+        const password = $("#password").val();
+        const data = {"username": username, "password": password, "previous_username": previous_username, "admin":admin};
+        $.ajax({
+            cache: false,
+            method: 'POST',
+            url: '{{.basePath}}/update-user',
+            dataType: 'json',
+            contentType: "application/json",
+            data: JSON.stringify(data),
+            success: function (data) {
+                toastr.success("Updated user information successfully");
+                location.reload();
+            },
+            error: function (jqXHR, exception) {
+                const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                toastr.error(responseJson['message']);
+            }
+        });
+    }
+
+    $(document).ready(function () {
+        $.validator.setDefaults({
+            submitHandler: function () {
+                updateUserInfo();
+            }
+        });
+        $("#frm_profile").validate({
+            rules: {
+                username: {
+                    required: true
+                }
+            },
+            messages: {
+                username: {
+                    required: "Please enter a username",
+                }
+            },
+            errorElement: 'span',
+            errorPlacement: function (error, element) {
+                error.addClass('invalid-feedback');
+                element.closest('.form-group').append(error);
+            },
+            highlight: function (element, errorClass, validClass) {
+                $(element).addClass('is-invalid');
+            },
+            unhighlight: function (element, errorClass, validClass) {
+                $(element).removeClass('is-invalid');
+            }
+        });
+    });
+</script>
+{{ end }}

templates/server.html

@@ -42,6 +42,12 @@ Wireguard Server Settings
                                 <input type="text" class="form-control" id="post_up" name="post_up"
                                        placeholder="Post Up Script" value="{{ .serverInterface.PostUp }}">
                             </div>
+                            <div class="form-group">
+                                <label for="pre_down">Pre Down Script</label>
+                                <input type="text" class="form-control" id="pre_down" name="pre_down"
+                                       placeholder="Pre Down Script" value="{{ .serverInterface.PreDown }}">
+                            </div>
+
                             <div class="form-group">
                                 <label for="post_down">Post Down Script</label>
                                 <input type="text" class="form-control" id="post_down" name="post_down"
@@ -110,7 +116,7 @@ Wireguard Server Settings
             </div>
             <div class="modal-body">
                 <p>Are you sure to generate a new key pair for the Wireguard server?<br/>
-                The existing Clients's peer public key need to be updated to keep the connection working.</p>
+                The existing Client's peer public key need to be updated to keep the connection working.</p>
             </div>
             <div class="modal-footer justify-content-between">
                 <button type="button" class="btn btn-outline-dark" data-dismiss="modal">Cancel</button>
@@ -130,13 +136,14 @@ Wireguard Server Settings
             const addresses = $("#addresses").val().split(",");
             const listen_port = $("#listen_port").val();
             const post_up = $("#post_up").val();
+            const pre_down = $("#pre_down").val();
             const post_down = $("#post_down").val();
-            const data = {"addresses": addresses, "listen_port": listen_port, "post_up": post_up, "post_down": post_down};
+            const data = {"addresses": addresses, "listen_port": listen_port, "post_up": post_up, "pre_down": pre_down, "post_down": post_down};
 
             $.ajax({
                 cache: false,
                 method: 'POST',
-                url: '/wg-server/interfaces',
+                url: '{{.basePath}}/wg-server/interfaces',
                 dataType: 'json',
                 contentType: "application/json",
                 data: JSON.stringify(data),
@@ -160,11 +167,13 @@ Wireguard Server Settings
             'defaultText': 'Add More',
             'removeWithBackspace': true,
             'minChars': 0,
+            'minInputWidth': '100%',
             'placeholderColor': '#666666'
         });
 
         // Load server addresses to the form
         {{range .serverInterface.Addresses}}
+        $("#addresses").removeTag('{{.}}');
         $("#addresses").addTag('{{.}}');
         {{end}}
 
@@ -210,7 +219,7 @@ Wireguard Server Settings
                 $.ajax({
                     cache: false,
                     method: 'POST',
-                    url: '/wg-server/keypair',
+                    url: '{{.basePath}}/wg-server/keypair',
                     dataType: 'json',
                     contentType: "application/json",
                     success: function(data) {

templates/status.html

@@ -0,0 +1,75 @@
+{{define "title"}}
+Connected Peers
+{{end}}
+
+{{define "top_css"}}
+{{end}}
+
+{{define "username"}}
+{{ .username }}
+{{end}}
+
+{{define "page_title"}}
+Connected Peers
+{{end}}
+
+{{define "page_content"}}
+<script>
+  function bytesToHumanReadable(temporal) {
+    const units = [" ", " K", " M", " G", " T", " P", " E", " Z", " Y"]
+    let pow = 0
+
+    while (temporal > 1024) {
+      temporal /= 1024
+      pow ++
+      if (pow == units.length-1) break
+    }
+
+    return parseFloat(temporal.toFixed(2)) + units[pow]+"B"
+  }
+</script>
+<section class="content">
+    <div class="container-fluid">
+        {{ if .error }}
+        <div class="alert alert-warning" role="alert">{{.error}}</div>
+        {{ end}}
+        {{ range $dev := .devices }}
+            <table class="table table-sm">
+                <caption>List of connected peers for device with name {{ $dev.Name }} </caption>
+              <thead>
+                <tr>
+                  <th scope="col">#</th>
+                  <th scope="col">Name</th>
+                  <th scope="col">Email</th>
+                  <th scope="col">Allocated IPs</th>
+                  <th scope="col">Endpoint</th>
+                  <th scope="col">Public Key</th>
+                  <th scope="col">Received</th>
+                  <th scope="col">Transmitted</th>
+                  <th scope="col">Connected (Approximation)</th>
+                  <th scope="col">Last Handshake</th>
+                </tr>
+              </thead>
+              <tbody>
+              {{ range $idx, $peer := $dev.Peers }}
+              <tr {{ if $peer.Connected }} class="table-success" {{ end }}>
+                <th scope="row">{{ $idx }}</th>
+                <td>{{ $peer.Name }}</td>
+                <td>{{ $peer.Email }}</td>
+                <td>{{ $peer.AllocatedIP }}</td>
+                <td>{{ $peer.Endpoint }}</td>
+                <td>{{ $peer.PublicKey }}</td>
+                <td title="{{ $peer.ReceivedBytes }} Bytes"><script>document.write(bytesToHumanReadable({{ $peer.ReceivedBytes }}))</script></td>
+                <td title="{{ $peer.TransmitBytes }} Bytes"><script>document.write(bytesToHumanReadable({{ $peer.TransmitBytes }}))</script></td>
+                <td>{{ if $peer.Connected }}✓{{end}}</td>
+                <td>{{ $peer.LastHandshakeTime.Format "2006-01-02 15:04:05 MST" }}</td>
+               </tr>
+              {{ end }}
+              </tbody>
+            </table>
+        {{ end }}
+    </div>
+</section>
+{{end}}
+{{define "bottom_js"}}
+{{end}}

templates/users_settings.html

@@ -0,0 +1,294 @@
+{{define "title"}}
+Users Settings
+{{end}}
+
+{{define "top_css"}}
+{{end}}
+
+{{define "username"}}
+{{ .username }}
+{{end}}
+
+{{define "page_title"}}
+Users Settings
+{{end}}
+
+{{define "page_content"}}
+<section class="content">
+    <div class="container-fluid">
+        <div class="row" id="users-list">
+        </div>
+    </div>
+</section>
+
+<div class="modal fade" id="modal_edit_user">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h4 class="modal-title">Edit User</h4>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <form name="frm_edit_user" id="frm_edit_user">
+                <div class="modal-body">
+                    <div class="form-group" style="display:none">
+                        <input type="text" style="display:none" class="form-control" id="_previous_user_name"
+                               name="_previous_user_name">
+                    </div>
+                    <div class="form-group">
+                        <label for="_user_name" class="control-label">Name</label>
+                        <input type="text" class="form-control" id="_user_name" name="_user_name">
+                    </div>
+                    <div class="form-group">
+                        <label for="_user_password" class="control-label">Password</label>
+                        <input type="password" class="form-control" id="_user_password" name="_user_password" value=""
+                               placeholder="Leave empty to keep the password unchanged">
+                    </div>
+                    <div class="form-group">
+                        <div class="icheck-primary d-inline">
+                            <input type="checkbox" id="_admin">
+                            <label for="_admin">
+                                Admin
+                            </label>
+                        </div>
+                    </div>
+
+                </div>
+                <div class="modal-footer justify-content-between">
+                    <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                    <button type="submit" class="btn btn-success">Save</button>
+                </div>
+            </form>
+        </div>
+        <!-- /.modal-content -->
+    </div>
+    <!-- /.modal-dialog -->
+</div>
+<!-- /.modal -->
+
+<div class="modal fade" id="modal_remove_user">
+    <div class="modal-dialog">
+        <div class="modal-content bg-danger">
+            <div class="modal-header">
+                <h4 class="modal-title">Remove</h4>
+                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                    <span aria-hidden="true">&times;</span>
+                </button>
+            </div>
+            <div class="modal-body">
+            </div>
+            <div class="modal-footer justify-content-between">
+                <button type="button" class="btn btn-outline-dark" data-dismiss="modal">Cancel</button>
+                <button type="button" class="btn btn-outline-dark" id="remove_user_confirm">Apply</button>
+            </div>
+        </div>
+        <!-- /.modal-content -->
+    </div>
+    <!-- /.modal-dialog -->
+</div>
+<!-- /.modal -->
+{{end}}
+
+{{define "bottom_js"}}
+<script>
+    function populateUsersList() {
+        $.ajax({
+            cache: false,
+            method: 'GET',
+            url: '{{.basePath}}/get-users',
+            dataType: 'json',
+            contentType: "application/json",
+            success: function (data) {
+                renderUserList(data);
+            },
+            error: function (jqXHR, exception) {
+                const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                toastr.error(responseJson['message']);
+            }
+        });
+    }
+</script>
+<script>
+    // load user list
+    $(document).ready(function () {
+        populateUsersList();
+        let newUserHtml = '<div class="col-sm-2 offset-md-4" style=" text-align: right;">' +
+            '<button style="" id="btn_new_user" type="button" class="btn btn-outline-primary btn-sm" ' +
+            'data-toggle="modal" data-target="#modal_edit_user" data-username="">' +
+            '<i class="nav-icon fas fa-plus"></i> New User</button></div>';
+        $('h1').parents(".row").append(newUserHtml);
+    })
+
+    // modal_remove_user modal event
+    $("#modal_remove_user").on('show.bs.modal', function (event) {
+        const button = $(event.relatedTarget);
+        const user_name = button.data('username');
+        const modal = $(this);
+        modal.find('.modal-body').text("You are about to remove user " + user_name);
+        modal.find('#remove_user_confirm').val(user_name);
+    })
+
+    // remove_user_confirm button event
+    $(document).ready(function () {
+        $("#remove_user_confirm").click(function () {
+            const user_name = $(this).val();
+            const data = {"username": user_name};
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: '{{.basePath}}/remove-user',
+                dataType: 'json',
+                contentType: "application/json",
+                data: JSON.stringify(data),
+                success: function (data) {
+                    $("#modal_remove_user").modal('hide');
+                    toastr.success('Removed user successfully');
+                    const divElement = document.getElementById('user_' + user_name);
+                    divElement.style.display = "none";
+                    location.reload()
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        });
+    });
+
+    // Edit user modal event
+    $(document).ready(function () {
+        $("#modal_edit_user").on('show.bs.modal', function (event) {
+            let modal = $(this);
+            const button = $(event.relatedTarget);
+            const user_name = button.data('username');
+
+            // update user modal data
+            if (user_name !== "") {
+                $.ajax({
+                    cache: false,
+                    method: 'GET',
+                    url: '{{.basePath}}/api/user/' + user_name,
+                    dataType: 'json',
+                    contentType: "application/json",
+                    success: function (resp) {
+                        const user = resp;
+
+                        modal.find(".modal-title").text("Edit user " + user.username);
+                        modal.find("#_user_name").val(user.username);
+                        modal.find("#_previous_user_name").val(user.username);
+                        modal.find("#_user_password").val("");
+                        modal.find("#_user_password").prop("placeholder", "Leave empty to keep the password unchanged")
+                        modal.find("#_admin").prop("checked", user.admin);
+                    },
+                    error: function (jqXHR, exception) {
+                        const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                        toastr.error(responseJson['message']);
+                    }
+                });
+            } else {
+                modal.find(".modal-title").text("Add new user");
+                modal.find("#_user_name").val("");
+                modal.find("#_previous_user_name").val("");
+                modal.find("#_user_password").val("");
+                modal.find("#_user_password").prop("placeholder", "")
+                modal.find("#_admin").prop("checked", false);
+            }
+        });
+    });
+
+    function updateUserInfo() {
+        const username = $("#_user_name").val();
+        const previous_username = $("#_previous_user_name").val();
+        const password = $("#_user_password").val();
+        let admin = false;
+        if ($("#_admin").is(':checked')) {
+            admin = true;
+        }
+        const data = {
+            "username": username,
+            "password": password,
+            "previous_username": previous_username,
+            "admin": admin
+        };
+
+        if (previous_username !== "") {
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: '{{.basePath}}/update-user',
+                dataType: 'json',
+                contentType: "application/json",
+                data: JSON.stringify(data),
+                success: function (data) {
+                    toastr.success("Updated user information successfully");
+                    location.reload();
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+        } else {
+            $.ajax({
+                cache: false,
+                method: 'POST',
+                url: '{{.basePath}}/create-user',
+                dataType: 'json',
+                contentType: "application/json",
+                data: JSON.stringify(data),
+                success: function (data) {
+                    toastr.success("Created user successfully");
+                    location.reload();
+                },
+                error: function (jqXHR, exception) {
+                    const responseJson = jQuery.parseJSON(jqXHR.responseText);
+                    toastr.error(responseJson['message']);
+                }
+            });
+
+        }
+    }
+
+    $(document).ready(function () {
+        $.validator.setDefaults({
+            submitHandler: function (form) {
+                updateUserInfo();
+            }
+        });
+        // Edit user form validation
+        $("#frm_edit_user").validate({
+            rules: {
+                _user_name: {
+                    required: true
+                },
+                _user_password: {
+                    required: function () {
+                        return $("#_previous_user_name").val() === "";
+                    }
+                },
+            },
+            messages: {
+                _user_name: {
+                    required: "Please enter a username"
+                },
+                _user_password: {
+                    required: "Please input a password"
+                },
+            },
+            errorElement: 'span',
+            errorPlacement: function (error, element) {
+                error.addClass('invalid-feedback');
+                element.closest('.form-group').append(error);
+            },
+            highlight: function (element, errorClass, validClass) {
+                $(element).addClass('is-invalid');
+            },
+            unhighlight: function (element, errorClass, validClass) {
+                $(element).removeClass('is-invalid');
+            }
+        });
+        //
+    });
+</script>
+{{end}}

templates/wake_on_lan_hosts.html

@@ -0,0 +1,123 @@
+{{define "title"}}
+    Wake On Lan Hosts
+{{end}}
+
+{{define "top_css"}}
+{{end}}
+
+{{define "username"}}
+    {{ .username }}
+{{end}}
+
+{{define "page_title"}}
+    Wake On Lan Hosts
+{{end}}
+
+{{define "page_content"}}
+
+    <div class="modal fade" id="modal_wake_on_lan_host">
+        <!--    MacAddress      string `json:"MacAddress"`-->
+        <!--    Name            string `json:"Name"`-->
+        <!--    LatestIPAddress string `json:"LatestIPAddress"`-->
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h4 class="modal-title">New Wake On Lan Host</h4>
+                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                        <span aria-hidden="true">&times;</span>
+                    </button>
+                </div>
+                <form name="frm_wake_on_lan_host" id="frm_wake_on_lan_host">
+                    <div class="modal-body">
+                        <input type="hidden" id="frm_wake_on_lan_host_old_mac_address" name="old_mac_address">
+                        <div class="form-group">
+                            <label for="frm_wake_on_lan_host_name" class="control-label">Name</label>
+                            <input type="text" class="form-control" id="frm_wake_on_lan_host_name" name="name">
+                        </div>
+                        <div class="form-group">
+                            <label for="frm_wake_on_lan_host_mac_address" class="control-label">Mac Address</label>
+                            <input type="text" class="form-control" id="frm_wake_on_lan_host_mac_address"
+                                   name="mac_address">
+                        </div>
+                    </div>
+                    <div class="modal-footer justify-content-between">
+                        <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                        <button type="submit" class="btn btn-primary">Submit</button>
+                    </div>
+                </form>
+            </div>
+            <!-- /.modal-content -->
+        </div>
+    </div>
+
+    <div class="modal fade" id="modal_remove_wake_on_lan_host">
+        <div class="modal-dialog">
+            <div class="modal-content bg-danger">
+                <div class="modal-header">
+                    <h4 class="modal-title">Remove</h4>
+                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                        <span aria-hidden="true">&times;</span>
+                    </button>
+                </div>
+                <div class="modal-body">
+                </div>
+                <div class="modal-footer justify-content-between">
+                    <button type="button" class="btn btn-outline-dark" data-dismiss="modal">Cancel</button>
+                    <button type="button" class="btn btn-outline-dark" id="remove_wake_on_host_confirm">Apply</button>
+                </div>
+            </div>
+            <!-- /.modal-content -->
+        </div>
+        <!-- /.modal-dialog -->
+    </div>
+
+    <section class="content">
+        <div class="container-fluid">
+            {{ if .error }}
+                <div class="alert alert-warning" role="alert">{{.error}}</div>
+            {{ end}}
+
+            <div class="row">
+                {{ range $idx, $host := .hosts }}
+                    {{- /*gotype: github.com/ngoduykhanh/wireguard-ui/model.WakeOnLanHost*/ -}}
+                    <div class="col-sm-4" id="{{ $host.ResolveResourceName }}">
+                        <div class="info-box">
+                            <div class="info-box-content">
+                                <div class="btn-group">
+                                    <button type="button" class="btn btn-outline-success btn-sm"
+                                            data-mac-address="{{ .MacAddress }}">Wake On
+                                    </button>
+                                    <button type="button"
+                                            class="btn btn-outline-primary btn-sm btn_modify_wake_on_lan_host"
+                                            data-toggle="modal" data-target="#modal_wake_on_lan_host"
+                                            data-name="{{ .Name }}" data-mac-address="{{ .MacAddress }}">Edit
+                                    </button>
+                                    <button type="button" class="btn btn-outline-danger btn-sm" data-toggle="modal"
+                                            data-target="#modal_remove_wake_on_lan_host"
+                                            data-mac-address="{{ .MacAddress }}">Remove
+                                    </button>
+                                </div>
+                                <hr>
+                                <span class="info-box-text"><i class="fas fa-address-card"></i> <span class="name">{{ .Name }}</span></span>
+                                <span class="info-box-text"><i class="fas fa-ethernet"></i> <span class="mac-address">{{ .MacAddress }}</span></span>
+                                <span class="info-box-text"><i class="fas fa-clock"></i>
+                                    <span class="latest-used">
+                                        {{ if .LatestUsed }}
+                                            {{ .LatestUsed.Format "2006-01-02T15:04:05Z07:00"}}
+                                        {{ else }}
+                                            Unused
+                                        {{ end }}
+                                    </span>
+                                </span>
+                            </div>
+                        </div>
+                    </div>
+                {{ end }}
+            </div>
+        </div>
+    </section>
+
+{{end}}
+{{define "bottom_js"}}
+    <script src="{{.basePath}}/static/custom/js/wake_on_lan_hosts.js"></script>
+{{end}}

templates/wg.conf

@@ -1,5 +1,5 @@
 # This file was generated using wireguard-ui (https://github.com/ngoduykhanh/wireguard-ui)
-# Please don't modify it manually, otherwise your change might got replaced.
+# Please don't modify it manually, otherwise your change might get replaced.
 
 # Address updated at:     {{ .serverConfig.Interface.UpdatedAt }}
 # Private Key updated at: {{ .serverConfig.KeyPair.UpdatedAt }}
@@ -7,18 +7,27 @@
 Address = {{$first :=true}}{{range .serverConfig.Interface.Addresses }}{{if $first}}{{$first = false}}{{else}},{{end}}{{.}}{{end}}
 ListenPort = {{ .serverConfig.Interface.ListenPort }}
 PrivateKey = {{ .serverConfig.KeyPair.PrivateKey }}
-MTU = {{ .globalSettings.MTU }}
+{{if .globalSettings.MTU}}MTU = {{ .globalSettings.MTU }}{{end}}
 PostUp = {{ .serverConfig.Interface.PostUp }}
+PreDown = {{ .serverConfig.Interface.PreDown }}
 PostDown = {{ .serverConfig.Interface.PostDown }}
+Table = {{ .globalSettings.Table }}
 
 {{range .clientDataList}}{{if eq .Client.Enabled true}}
 # ID:           {{ .Client.ID }}
 # Name:         {{ .Client.Name }}
 # Email:        {{ .Client.Email }}
+# Telegram:     {{ .Client.TgUserid }}
 # Created at:   {{ .Client.CreatedAt }}
 # Update at:    {{ .Client.UpdatedAt }}
+{{- if .Client.AdditionalNotes}}
+
+# Notes:
+# {{ .Client.AdditionalNotes }}{{end}}
 [Peer]
 PublicKey = {{ .Client.PublicKey }}
-PresharedKey = {{ .Client.PresharedKey }}
+{{if .Client.PresharedKey}}PresharedKey = {{ .Client.PresharedKey }}{{end}}
-AllowedIPs = {{$first :=true}}{{range .Client.AllocatedIPs }}{{if $first}}{{$first = false}}{{else}},{{end}}{{.}}{{end}}
+AllowedIPs = {{$first :=true}}{{range .Client.AllocatedIPs }}{{if $first}}{{$first = false}}{{else}},{{end}}{{.}}{{end}}{{range .Client.ExtraAllowedIPs }},{{.}}{{end}}
+{{if $.globalSettings.PersistentKeepalive}}PersistentKeepalive = {{ $.globalSettings.PersistentKeepalive }}{{end}}
+{{if .Client.Endpoint}}Endpoint = {{ .Client.Endpoint }}{{end}}
 {{end}}{{end}}

util/cache.go

@@ -0,0 +1,8 @@
+package util
+
+import "sync"
+
+var IPToSubnetRange = map[string]uint16{}
+var TgUseridToClientID = map[int64][]string{}
+var TgUseridToClientIDMutex sync.RWMutex
+var DBUsersToCRC32 = map[string]uint32{}

util/config.go

@@ -1,7 +1,119 @@
 package util
 
+import (
+	"net"
+	"strings"
+
+	"github.com/labstack/gommon/log"
+)
+
 // Runtime config
 var (
-	DisableLogin bool
+	DisableLogin       bool
-	BindAddress string
+	BindAddress        string
+	SmtpHostname       string
+	SmtpPort           int
+	SmtpUsername       string
+	SmtpPassword       string
+	SmtpNoTLSCheck     bool
+	SmtpEncryption     string
+	SmtpAuthType       string
+	SmtpHelo           string
+	SendgridApiKey     string
+	EmailFrom          string
+	EmailFromName      string
+	SessionSecret      [64]byte
+	SessionMaxDuration int64
+	WgConfTemplate     string
+	BasePath           string
+	SubnetRanges       map[string]([]*net.IPNet)
+	SubnetRangesOrder  []string
 )
+
+const (
+	DefaultUsername                        = "admin"
+	DefaultPassword                        = "admin"
+	DefaultIsAdmin                         = true
+	DefaultServerAddress                   = "10.252.1.0/24"
+	DefaultServerPort                      = 51820
+	DefaultDNS                             = "1.1.1.1"
+	DefaultMTU                             = 1450
+	DefaultPersistentKeepalive             = 15
+	DefaultFirewallMark                    = "0xca6c" // i.e. 51820
+	DefaultTable                           = "auto"
+	DefaultConfigFilePath                  = "/etc/wireguard/wg0.conf"
+	UsernameEnvVar                         = "WGUI_USERNAME"
+	PasswordEnvVar                         = "WGUI_PASSWORD"
+	PasswordFileEnvVar                     = "WGUI_PASSWORD_FILE"
+	PasswordHashEnvVar                     = "WGUI_PASSWORD_HASH"
+	PasswordHashFileEnvVar                 = "WGUI_PASSWORD_HASH_FILE"
+	FaviconFilePathEnvVar                  = "WGUI_FAVICON_FILE_PATH"
+	EndpointAddressEnvVar                  = "WGUI_ENDPOINT_ADDRESS"
+	DNSEnvVar                              = "WGUI_DNS"
+	MTUEnvVar                              = "WGUI_MTU"
+	PersistentKeepaliveEnvVar              = "WGUI_PERSISTENT_KEEPALIVE"
+	FirewallMarkEnvVar                     = "WGUI_FIREWALL_MARK"
+	TableEnvVar                            = "WGUI_TABLE"
+	ConfigFilePathEnvVar                   = "WGUI_CONFIG_FILE_PATH"
+	LogLevel                               = "WGUI_LOG_LEVEL"
+	ServerAddressesEnvVar                  = "WGUI_SERVER_INTERFACE_ADDRESSES"
+	ServerListenPortEnvVar                 = "WGUI_SERVER_LISTEN_PORT"
+	ServerPostUpScriptEnvVar               = "WGUI_SERVER_POST_UP_SCRIPT"
+	ServerPostDownScriptEnvVar             = "WGUI_SERVER_POST_DOWN_SCRIPT"
+	DefaultClientAllowedIpsEnvVar          = "WGUI_DEFAULT_CLIENT_ALLOWED_IPS"
+	DefaultClientExtraAllowedIpsEnvVar     = "WGUI_DEFAULT_CLIENT_EXTRA_ALLOWED_IPS"
+	DefaultClientUseServerDNSEnvVar        = "WGUI_DEFAULT_CLIENT_USE_SERVER_DNS"
+	DefaultClientEnableAfterCreationEnvVar = "WGUI_DEFAULT_CLIENT_ENABLE_AFTER_CREATION"
+)
+
+func ParseBasePath(basePath string) string {
+	if !strings.HasPrefix(basePath, "/") {
+		basePath = "/" + basePath
+	}
+	if strings.HasSuffix(basePath, "/") {
+		basePath = strings.TrimSuffix(basePath, "/")
+	}
+	return basePath
+}
+
+func ParseSubnetRanges(subnetRangesStr string) map[string]([]*net.IPNet) {
+	subnetRanges := map[string]([]*net.IPNet){}
+	if subnetRangesStr == "" {
+		return subnetRanges
+	}
+	cidrSet := map[string]bool{}
+	subnetRangesStr = strings.TrimSpace(subnetRangesStr)
+	subnetRangesStr = strings.Trim(subnetRangesStr, ";:,")
+	ranges := strings.Split(subnetRangesStr, ";")
+	for _, rng := range ranges {
+		rng = strings.TrimSpace(rng)
+		rngSpl := strings.Split(rng, ":")
+		if len(rngSpl) != 2 {
+			log.Warnf("Unable to parse subnet range: %v. Skipped.", rng)
+			continue
+		}
+		rngName := strings.TrimSpace(rngSpl[0])
+		subnetRanges[rngName] = make([]*net.IPNet, 0)
+		cidrs := strings.Split(rngSpl[1], ",")
+		for _, cidr := range cidrs {
+			cidr = strings.TrimSpace(cidr)
+			_, net, err := net.ParseCIDR(cidr)
+			if err != nil {
+				log.Warnf("[%v] Unable to parse CIDR: %v. Skipped.", rngName, cidr)
+				continue
+			}
+			if cidrSet[net.String()] {
+				log.Warnf("[%v] CIDR already exists: %v. Skipped.", rngName, net.String())
+				continue
+			}
+			cidrSet[net.String()] = true
+			subnetRanges[rngName] = append(subnetRanges[rngName], net)
+		}
+		if len(subnetRanges[rngName]) == 0 {
+			delete(subnetRanges, rngName)
+		} else {
+			SubnetRangesOrder = append(SubnetRangesOrder, rngName)
+		}
+	}
+	return subnetRanges
+}

util/db.go

@@ -1,259 +0,0 @@
-package util
-
-import (
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"os"
-	"path"
-	"time"
-
-	"github.com/ngoduykhanh/wireguard-ui/model"
-	"github.com/sdomino/scribble"
-	"github.com/skip2/go-qrcode"
-	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
-)
-
-const dbPath = "./db"
-const defaultUsername = "admin"
-const defaultPassword = "admin"
-const defaultServerAddress = "10.252.1.0/24"
-const defaultServerPort = 51820
-const defaultDNS = "1.1.1.1"
-const defaultMTU = 1450
-const defaultPersistentKeepalive = 15
-const defaultConfigFilePath = "/etc/wireguard/wg0.conf"
-
-// DBConn to initialize the database connection
-func DBConn() (*scribble.Driver, error) {
-	db, err := scribble.New(dbPath, nil)
-	if err != nil {
-		return nil, err
-	}
-	return db, nil
-}
-
-// InitDB to create the default database
-func InitDB() error {
-	var clientPath string = path.Join(dbPath, "clients")
-	var serverPath string = path.Join(dbPath, "server")
-	var serverInterfacePath string = path.Join(serverPath, "interfaces.json")
-	var serverKeyPairPath string = path.Join(serverPath, "keypair.json")
-	var globalSettingPath string = path.Join(serverPath, "global_settings.json")
-	var userPath string = path.Join(serverPath, "users.json")
-
-	// create directories if they do not exist
-	if _, err := os.Stat(clientPath); os.IsNotExist(err) {
-		os.MkdirAll(clientPath, os.ModePerm)
-	}
-	if _, err := os.Stat(serverPath); os.IsNotExist(err) {
-		os.MkdirAll(serverPath, os.ModePerm)
-	}
-
-	// server's interface
-	if _, err := os.Stat(serverInterfacePath); os.IsNotExist(err) {
-		db, err := DBConn()
-		if err != nil {
-			return err
-		}
-
-		serverInterface := new(model.ServerInterface)
-		serverInterface.Addresses = []string{defaultServerAddress}
-		serverInterface.ListenPort = defaultServerPort
-		serverInterface.UpdatedAt = time.Now().UTC()
-		db.Write("server", "interfaces", serverInterface)
-	}
-
-	// server's key pair
-	if _, err := os.Stat(serverKeyPairPath); os.IsNotExist(err) {
-		db, err := DBConn()
-		if err != nil {
-			return err
-		}
-
-		key, err := wgtypes.GeneratePrivateKey()
-		if err != nil {
-			return scribble.ErrMissingCollection
-		}
-		serverKeyPair := new(model.ServerKeypair)
-		serverKeyPair.PrivateKey = key.String()
-		serverKeyPair.PublicKey = key.PublicKey().String()
-		serverKeyPair.UpdatedAt = time.Now().UTC()
-		db.Write("server", "keypair", serverKeyPair)
-	}
-
-	// global settings
-	if _, err := os.Stat(globalSettingPath); os.IsNotExist(err) {
-		db, err := DBConn()
-		if err != nil {
-			return err
-		}
-
-		publicInterface, err := GetPublicIP()
-		if err != nil {
-			return err
-		}
-
-		globalSetting := new(model.GlobalSetting)
-		globalSetting.EndpointAddress = publicInterface.IPAddress
-		globalSetting.DNSServers = []string{defaultDNS}
-		globalSetting.MTU = defaultMTU
-		globalSetting.PersistentKeepalive = defaultPersistentKeepalive
-		globalSetting.ConfigFilePath = defaultConfigFilePath
-		globalSetting.UpdatedAt = time.Now().UTC()
-		db.Write("server", "global_settings", globalSetting)
-	}
-
-	// user info
-	if _, err := os.Stat(userPath); os.IsNotExist(err) {
-		db, err := DBConn()
-		if err != nil {
-			return err
-		}
-
-		user := new(model.User)
-		user.Username = defaultUsername
-		user.Password = defaultPassword
-		db.Write("server", "users", user)
-	}
-
-	return nil
-}
-
-// GetUser func to query user info from the database
-func GetUser() (model.User, error) {
-	user := model.User{}
-
-	db, err := DBConn()
-	if err != nil {
-		return user, err
-	}
-
-	if err := db.Read("server", "users", &user); err != nil {
-		return user, err
-	}
-
-	return user, nil
-}
-
-// GetGlobalSettings func to query global settings from the database
-func GetGlobalSettings() (model.GlobalSetting, error) {
-	settings := model.GlobalSetting{}
-
-	db, err := DBConn()
-	if err != nil {
-		return settings, err
-	}
-
-	if err := db.Read("server", "global_settings", &settings); err != nil {
-		return settings, err
-	}
-
-	return settings, nil
-}
-
-// GetServer func to query Server setting from the database
-func GetServer() (model.Server, error) {
-	server := model.Server{}
-
-	db, err := DBConn()
-	if err != nil {
-		return server, err
-	}
-
-	// read server interface information
-	serverInterface := model.ServerInterface{}
-	if err := db.Read("server", "interfaces", &serverInterface); err != nil {
-		return server, err
-	}
-
-	// read server key pair information
-	serverKeyPair := model.ServerKeypair{}
-	if err := db.Read("server", "keypair", &serverKeyPair); err != nil {
-		return server, err
-	}
-
-	// create Server object and return
-	server.Interface = &serverInterface
-	server.KeyPair = &serverKeyPair
-	return server, nil
-}
-
-// GetClients to get all clients from the database
-func GetClients(hasQRCode bool) ([]model.ClientData, error) {
-	var clients []model.ClientData
-
-	db, err := DBConn()
-	if err != nil {
-		return clients, err
-	}
-
-	// read all client json file in "clients" directory
-	records, err := db.ReadAll("clients")
-	if err != nil {
-		return clients, err
-	}
-
-	// build the ClientData list
-	for _, f := range records {
-		client := model.Client{}
-		clientData := model.ClientData{}
-
-		// get client info
-		if err := json.Unmarshal([]byte(f), &client); err != nil {
-			return clients, fmt.Errorf("cannot decode client json structure: %v", err)
-		}
-
-		// generate client qrcode image in base64
-		if hasQRCode {
-			server, _ := GetServer()
-			globalSettings, _ := GetGlobalSettings()
-
-			png, err := qrcode.Encode(BuildClientConfig(client, server, globalSettings), qrcode.Medium, 256)
-			if err == nil {
-				clientData.QRCode = "data:image/png;base64," + base64.StdEncoding.EncodeToString([]byte(png))
-			} else {
-				fmt.Print("Cannot generate QR code: ", err)
-			}
-		}
-
-		// create the list of clients and their qrcode data
-		clientData.Client = &client
-		clients = append(clients, clientData)
-	}
-
-	return clients, nil
-}
-
-// GetClientByID func to query a client from the database
-func GetClientByID(clientID string, hasQRCode bool) (model.ClientData, error) {
-	client := model.Client{}
-	clientData := model.ClientData{}
-
-	db, err := DBConn()
-	if err != nil {
-		return clientData, err
-	}
-
-	// read client information
-	if err := db.Read("clients", clientID, &client); err != nil {
-		return clientData, err
-	}
-
-	// generate client qrcode image in base64
-	if hasQRCode {
-		server, _ := GetServer()
-		globalSettings, _ := GetGlobalSettings()
-
-		png, err := qrcode.Encode(BuildClientConfig(client, server, globalSettings), qrcode.Medium, 256)
-		if err == nil {
-			clientData.QRCode = "data:image/png;base64," + base64.StdEncoding.EncodeToString([]byte(png))
-		} else {
-			fmt.Print("Cannot generate QR code: ", err)
-		}
-	}
-
-	clientData.Client = &client
-
-	return clientData, nil
-}

util/hash.go

@@ -0,0 +1,32 @@
+package util
+
+import (
+	"encoding/base64"
+	"errors"
+	"fmt"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+func HashPassword(plaintext string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(plaintext), 14)
+	if err != nil {
+		return "", fmt.Errorf("cannot hash password: %w", err)
+	}
+	return base64.StdEncoding.EncodeToString(bytes), nil
+}
+
+func VerifyHash(base64Hash string, plaintext string) (bool, error) {
+	hash, err := base64.StdEncoding.DecodeString(base64Hash)
+	if err != nil {
+		return false, fmt.Errorf("cannot decode base64 hash: %w", err)
+	}
+	err = bcrypt.CompareHashAndPassword(hash, []byte(plaintext))
+	if errors.Is(err, bcrypt.ErrMismatchedHashAndPassword) {
+		return false, nil
+	}
+	if err != nil {
+		return false, fmt.Errorf("cannot verify password: %w", err)
+	}
+	return true, nil
+}

util/util.go

@@ -1,37 +1,64 @@
 package util
 
 import (
+	"bufio"
+	"bytes"
+	"encoding/gob"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"hash/crc32"
+	"io"
+	"io/fs"
+	"math/rand"
 	"net"
 	"os"
+	"path"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"text/template"
 	"time"
 
-	rice "github.com/GeertJohan/go.rice"
+	"github.com/ngoduykhanh/wireguard-ui/store"
+	"github.com/ngoduykhanh/wireguard-ui/telegram"
+	"github.com/skip2/go-qrcode"
+	"golang.org/x/mod/sumdb/dirhash"
+
 	externalip "github.com/glendc/go-external-ip"
 	"github.com/labstack/gommon/log"
 	"github.com/ngoduykhanh/wireguard-ui/model"
 	"github.com/sdomino/scribble"
 )
 
+var qrCodeSettings = model.QRCodeSettings{
+	Enabled:    true,
+	IncludeDNS: true,
+	IncludeMTU: true,
+}
+
 // BuildClientConfig to create wireguard client config string
 func BuildClientConfig(client model.Client, server model.Server, setting model.GlobalSetting) string {
 	// Interface section
-	clientAddress := fmt.Sprintf("Address = %s", strings.Join(client.AllocatedIPs, ","))
+	clientAddress := fmt.Sprintf("Address = %s\n", strings.Join(client.AllocatedIPs, ","))
-	clientPrivateKey := fmt.Sprintf("PrivateKey = %s", client.PrivateKey)
+	clientPrivateKey := fmt.Sprintf("PrivateKey = %s\n", client.PrivateKey)
 	clientDNS := ""
 	if client.UseServerDNS {
-		clientDNS = fmt.Sprintf("DNS = %s", strings.Join(setting.DNSServers, ","))
+		clientDNS = fmt.Sprintf("DNS = %s\n", strings.Join(setting.DNSServers, ","))
+	}
+	clientMTU := ""
+	if setting.MTU > 0 {
+		clientMTU = fmt.Sprintf("MTU = %d\n", setting.MTU)
 	}
 
 	// Peer section
-	peerPublicKey := fmt.Sprintf("PublicKey = %s", server.KeyPair.PublicKey)
+	peerPublicKey := fmt.Sprintf("PublicKey = %s\n", server.KeyPair.PublicKey)
-	peerPresharedKey := fmt.Sprintf("PresharedKey = %s", client.PresharedKey)
+	peerPresharedKey := ""
-	peerAllowedIPs := fmt.Sprintf("AllowedIPs = %s", strings.Join(client.AllowedIPs, ","))
+	if client.PresharedKey != "" {
+		peerPresharedKey = fmt.Sprintf("PresharedKey = %s\n", client.PresharedKey)
+	}
+
+	peerAllowedIPs := fmt.Sprintf("AllowedIPs = %s\n", strings.Join(client.AllowedIPs, ","))
 
 	desiredHost := setting.EndpointAddress
 	desiredPort := server.Interface.ListenPort
@@ -41,28 +68,52 @@ func BuildClientConfig(client model.Client, server model.Server, setting model.G
 		if n, err := strconv.Atoi(split[1]); err == nil {
 			desiredPort = n
 		} else {
-			log.Error("Endpoint appears to be incorrectly formated: ", err)
+			log.Error("Endpoint appears to be incorrectly formatted: ", err)
 		}
 	}
-	peerEndpoint := fmt.Sprintf("Endpoint = %s:%d", desiredHost, desiredPort)
+	peerEndpoint := fmt.Sprintf("Endpoint = %s:%d\n", desiredHost, desiredPort)
 
-	peerPersistentKeepalive := fmt.Sprintf("PersistentKeepalive = %d", setting.PersistentKeepalive)
+	peerPersistentKeepalive := ""
+	if setting.PersistentKeepalive > 0 {
+		peerPersistentKeepalive = fmt.Sprintf("PersistentKeepalive = %d\n", setting.PersistentKeepalive)
+	}
 
 	// build the config as string
 	strConfig := "[Interface]\n" +
-		clientAddress + "\n" +
+		clientAddress +
-		clientPrivateKey + "\n" +
+		clientPrivateKey +
-		clientDNS + "\n\n" +
+		clientDNS +
-		"[Peer]" + "\n" +
+		clientMTU +
-		peerPublicKey + "\n" +
+		"\n[Peer]\n" +
-		peerPresharedKey + "\n" +
+		peerPublicKey +
-		peerAllowedIPs + "\n" +
+		peerPresharedKey +
-		peerEndpoint + "\n" +
+		peerAllowedIPs +
-		peerPersistentKeepalive + "\n"
+		peerEndpoint +
+		peerPersistentKeepalive
 
 	return strConfig
 }
 
+// ClientDefaultsFromEnv to read the default values for creating a new client from the environment or use sane defaults
+func ClientDefaultsFromEnv() model.ClientDefaults {
+	clientDefaults := model.ClientDefaults{}
+	clientDefaults.AllowedIps = LookupEnvOrStrings(DefaultClientAllowedIpsEnvVar, []string{"0.0.0.0/0"})
+	clientDefaults.ExtraAllowedIps = LookupEnvOrStrings(DefaultClientExtraAllowedIpsEnvVar, []string{})
+	clientDefaults.UseServerDNS = LookupEnvOrBool(DefaultClientUseServerDNSEnvVar, true)
+	clientDefaults.EnableAfterCreation = LookupEnvOrBool(DefaultClientEnableAfterCreationEnvVar, true)
+
+	return clientDefaults
+}
+
+// ContainsCIDR to check if ipnet1 contains ipnet2
+// https://stackoverflow.com/a/40406619/6111641
+// https://go.dev/play/p/Q4J-JEN3sF
+func ContainsCIDR(ipnet1, ipnet2 *net.IPNet) bool {
+	ones1, _ := ipnet1.Mask.Size()
+	ones2, _ := ipnet2.Mask.Size()
+	return ones1 <= ones2 && ipnet1.Contains(ipnet2.IP)
+}
+
 // ValidateCIDR to validate a network CIDR
 func ValidateCIDR(cidr string) bool {
 	_, _, err := net.ParseCIDR(cidr)
@@ -73,10 +124,18 @@ func ValidateCIDR(cidr string) bool {
 }
 
 // ValidateCIDRList to validate a list of network CIDR
-func ValidateCIDRList(cidrs []string) bool {
+func ValidateCIDRList(cidrs []string, allowEmpty bool) bool {
 	for _, cidr := range cidrs {
-		if ValidateCIDR(cidr) == false {
+		if allowEmpty {
-			return false
+			if len(cidr) > 0 {
+				if ValidateCIDR(cidr) == false {
+					return false
+				}
+			}
+		} else {
+			if ValidateCIDR(cidr) == false {
+				return false
+			}
 		}
 	}
 	return true
@@ -84,7 +143,15 @@ func ValidateCIDRList(cidrs []string) bool {
 
 // ValidateAllowedIPs to validate allowed ip addresses in CIDR format
 func ValidateAllowedIPs(cidrs []string) bool {
-	if ValidateCIDRList(cidrs) == false {
+	if ValidateCIDRList(cidrs, false) == false {
+		return false
+	}
+	return true
+}
+
+// ValidateExtraAllowedIPs to validate extra Allowed ip addresses, allowing empty strings
+func ValidateExtraAllowedIPs(cidrs []string) bool {
+	if ValidateCIDRList(cidrs, true) == false {
 		return false
 	}
 	return true
@@ -92,7 +159,7 @@ func ValidateAllowedIPs(cidrs []string) bool {
 
 // ValidateServerAddresses to validate allowed ip addresses in CIDR format
 func ValidateServerAddresses(cidrs []string) bool {
-	if ValidateCIDRList(cidrs) == false {
+	if ValidateCIDRList(cidrs, false) == false {
 		return false
 	}
 	return true
@@ -124,7 +191,7 @@ func GetInterfaceIPs() ([]model.Interface, error) {
 		return nil, err
 	}
 
-	var interfaceList = []model.Interface{}
+	var interfaceList []model.Interface
 
 	// get interface's ip addresses
 	for _, i := range ifaces {
@@ -165,9 +232,9 @@ func GetPublicIP() (model.Interface, error) {
 	consensus := externalip.NewConsensus(&cfg, nil)
 
 	// add trusted voters
-	consensus.AddVoter(externalip.NewHTTPSource("http://checkip.amazonaws.com/"), 1)
+	consensus.AddVoter(externalip.NewHTTPSource("https://checkip.amazonaws.com/"), 1)
 	consensus.AddVoter(externalip.NewHTTPSource("http://whatismyip.akamai.com"), 1)
-	consensus.AddVoter(externalip.NewHTTPSource("http://ifconfig.top"), 1)
+	consensus.AddVoter(externalip.NewHTTPSource("https://ifconfig.top"), 1)
 
 	publicInterface := model.Interface{}
 	publicInterface.Name = "Public Address"
@@ -175,10 +242,12 @@ func GetPublicIP() (model.Interface, error) {
 	ip, err := consensus.ExternalIP()
 	if err != nil {
 		publicInterface.IPAddress = "N/A"
+	} else {
+		publicInterface.IPAddress = ip.String()
 	}
-	publicInterface.IPAddress = ip.String()
 
-	return publicInterface, err
+	// error handling happened above, no need to pass it through
+	return publicInterface, nil
 }
 
 // GetIPFromCIDR get ip from CIDR
@@ -225,7 +294,7 @@ func GetAllocatedIPs(ignoreClientID string) ([]string, error) {
 	// append client's addresses to the result
 	for _, f := range records {
 		client := model.Client{}
-		if err := json.Unmarshal([]byte(f), &client); err != nil {
+		if err := json.Unmarshal(f, &client); err != nil {
 			return nil, err
 		}
 
@@ -267,17 +336,34 @@ func GetBroadcastIP(n *net.IPNet) net.IP {
 	return broadcast
 }
 
+// GetBroadcastAndNetworkAddrsLookup get the ip address that can't be used with current server interfaces
+func GetBroadcastAndNetworkAddrsLookup(interfaceAddresses []string) map[string]bool {
+	list := make(map[string]bool)
+	for _, ifa := range interfaceAddresses {
+		_, netAddr, err := net.ParseCIDR(ifa)
+		if err != nil {
+			continue
+		}
+
+		broadcastAddr := GetBroadcastIP(netAddr).String()
+		networkAddr := netAddr.IP.String()
+		list[broadcastAddr] = true
+		list[networkAddr] = true
+	}
+	return list
+}
+
 // GetAvailableIP get the ip address that can be allocated from an CIDR
-func GetAvailableIP(cidr string, allocatedList []string) (string, error) {
+// We need interfaceAddresses to find real broadcast and network addresses
-	ip, net, err := net.ParseCIDR(cidr)
+func GetAvailableIP(cidr string, allocatedList, interfaceAddresses []string) (string, error) {
+	ip, netAddr, err := net.ParseCIDR(cidr)
 	if err != nil {
 		return "", err
 	}
 
-	broadcastAddr := GetBroadcastIP(net).String()
+	unavailableIPs := GetBroadcastAndNetworkAddrsLookup(interfaceAddresses)
-	networkAddr := net.IP.String()
 
-	for ip := ip.Mask(net.Mask); net.Contains(ip); inc(ip) {
+	for ip := ip.Mask(netAddr.Mask); netAddr.Contains(ip); inc(ip) {
 		available := true
 		suggestedAddr := ip.String()
 		for _, allocatedAddr := range allocatedList {
@@ -286,7 +372,7 @@ func GetAvailableIP(cidr string, allocatedList []string) (string, error) {
 				break
 			}
 		}
-		if available && suggestedAddr != networkAddr && suggestedAddr != broadcastAddr {
+		if available && !unavailableIPs[suggestedAddr] {
 			return suggestedAddr, nil
 		}
 	}
@@ -302,7 +388,7 @@ func ValidateIPAllocation(serverAddresses []string, ipAllocatedList []string, ip
 
 		// clientCIDR must be in CIDR format
 		if ip == nil {
-			return false, fmt.Errorf("Invalid ip allocation input %s. Must be in CIDR format", clientCIDR)
+			return false, fmt.Errorf("invalid ip allocation input %s. Must be in CIDR format", clientCIDR)
 		}
 
 		// return false immediately if the ip is already in use (in ipAllocatedList)
@@ -314,7 +400,7 @@ func ValidateIPAllocation(serverAddresses []string, ipAllocatedList []string, ip
 
 		// even if it is not in use, we still need to check if it
 		// belongs to a network of the server.
-		var isValid bool = false
+		var isValid = false
 		for _, serverCIDR := range serverAddresses {
 			_, serverNet, _ := net.ParseCIDR(serverCIDR)
 			if serverNet.Contains(ip) {
@@ -334,13 +420,154 @@ func ValidateIPAllocation(serverAddresses []string, ipAllocatedList []string, ip
 	return true, nil
 }
 
-// WriteWireGuardServerConfig to write Wireguard server config. e.g. wg0.conf
+// findSubnetRangeForIP to find first SR for IP, and cache the match
-func WriteWireGuardServerConfig(tmplBox *rice.Box, serverConfig model.Server, clientDataList []model.ClientData, globalSettings model.GlobalSetting) error {
+func findSubnetRangeForIP(cidr string) (uint16, error) {
-	// read wg.conf template file to string
+	ip, _, err := net.ParseCIDR(cidr)
-	tmplWireguardConf, err := tmplBox.String("wg.conf")
+	if err != nil {
+		return 0, err
+	}
+
+	if srName, ok := IPToSubnetRange[ip.String()]; ok {
+		return srName, nil
+	}
+
+	for srIndex, sr := range SubnetRangesOrder {
+		for _, srCIDR := range SubnetRanges[sr] {
+			if srCIDR.Contains(ip) {
+				IPToSubnetRange[ip.String()] = uint16(srIndex)
+				return uint16(srIndex), nil
+			}
+		}
+	}
+	return 0, fmt.Errorf("subnet range not found for this IP")
+}
+
+// FillClientSubnetRange to fill subnet ranges client belongs to, does nothing if SRs are not found
+func FillClientSubnetRange(client model.ClientData) model.ClientData {
+	cl := *client.Client
+	for _, ip := range cl.AllocatedIPs {
+		sr, err := findSubnetRangeForIP(ip)
+		if err != nil {
+			continue
+		}
+		cl.SubnetRanges = append(cl.SubnetRanges, SubnetRangesOrder[sr])
+	}
+	return model.ClientData{
+		Client: &cl,
+		QRCode: client.QRCode,
+	}
+}
+
+// ValidateAndFixSubnetRanges to check if subnet ranges are valid for the server configuration
+// Removes all non-valid CIDRs
+func ValidateAndFixSubnetRanges(db store.IStore) error {
+	if len(SubnetRangesOrder) == 0 {
+		return nil
+	}
+
+	server, err := db.GetServer()
 	if err != nil {
 		return err
 	}
+	var serverSubnets []*net.IPNet
+	for _, addr := range server.Interface.Addresses {
+		addr = strings.TrimSpace(addr)
+		_, netAddr, err := net.ParseCIDR(addr)
+		if err != nil {
+			return err
+		}
+		serverSubnets = append(serverSubnets, netAddr)
+	}
+
+	for _, rng := range SubnetRangesOrder {
+		cidrs := SubnetRanges[rng]
+		if len(cidrs) > 0 {
+			newCIDRs := make([]*net.IPNet, 0)
+			for _, cidr := range cidrs {
+				valid := false
+
+				for _, serverSubnet := range serverSubnets {
+					if ContainsCIDR(serverSubnet, cidr) {
+						valid = true
+						break
+					}
+				}
+
+				if valid {
+					newCIDRs = append(newCIDRs, cidr)
+				} else {
+					log.Warnf("[%v] CIDR is outside of all server subnets: %v. Removed.", rng, cidr)
+				}
+			}
+
+			if len(newCIDRs) > 0 {
+				SubnetRanges[rng] = newCIDRs
+			} else {
+				delete(SubnetRanges, rng)
+				log.Warnf("[%v] No valid CIDRs in this subnet range. Removed.", rng)
+			}
+		}
+	}
+
+	return nil
+}
+
+// GetSubnetRangesString to get a formatted string, representing active subnet ranges
+func GetSubnetRangesString() string {
+	if len(SubnetRangesOrder) == 0 {
+		return ""
+	}
+
+	strB := strings.Builder{}
+
+	for _, rng := range SubnetRangesOrder {
+		cidrs := SubnetRanges[rng]
+		if len(cidrs) > 0 {
+			strB.WriteString(rng)
+			strB.WriteString(":[")
+			first := true
+			for _, cidr := range cidrs {
+				if !first {
+					strB.WriteString(", ")
+				}
+				strB.WriteString(cidr.String())
+				first = false
+			}
+			strB.WriteString("]  ")
+		}
+	}
+
+	return strings.TrimSpace(strB.String())
+}
+
+// WriteWireGuardServerConfig to write Wireguard server config. e.g. wg0.conf
+func WriteWireGuardServerConfig(tmplDir fs.FS, serverConfig model.Server, clientDataList []model.ClientData, usersList []model.User, globalSettings model.GlobalSetting) error {
+	var tmplWireguardConf string
+
+	// if set, read wg.conf template from WgConfTemplate
+	if len(WgConfTemplate) > 0 {
+		fileContentBytes, err := os.ReadFile(WgConfTemplate)
+		if err != nil {
+			return err
+		}
+		tmplWireguardConf = string(fileContentBytes)
+	} else {
+		// read default wg.conf template file to string
+		fileContent, err := StringFromEmbedFile(tmplDir, "wg.conf")
+		if err != nil {
+			return err
+		}
+		tmplWireguardConf = fileContent
+	}
+
+	// escape multiline notes
+	escapedClientDataList := []model.ClientData{}
+	for _, cd := range clientDataList {
+		if cd.Client.AdditionalNotes != "" {
+			cd.Client.AdditionalNotes = strings.ReplaceAll(cd.Client.AdditionalNotes, "\n", "\n# ")
+		}
+		escapedClientDataList = append(escapedClientDataList, cd)
+	}
 
 	// parse the template
 	t, err := template.New("wg_config").Parse(tmplWireguardConf)
@@ -356,8 +583,9 @@ func WriteWireGuardServerConfig(tmplBox *rice.Box, serverConfig model.Server, cl
 
 	config := map[string]interface{}{
 		"serverConfig":   serverConfig,
-		"clientDataList": clientDataList,
+		"clientDataList": escapedClientDataList,
 		"globalSettings": globalSettings,
+		"usersList":      usersList,
 	}
 
 	err = t.Execute(f, config)
@@ -368,3 +596,281 @@ func WriteWireGuardServerConfig(tmplBox *rice.Box, serverConfig model.Server, cl
 
 	return nil
 }
+
+// SendRequestedConfigsToTelegram to send client all their configs. Returns failed configs list.
+func SendRequestedConfigsToTelegram(db store.IStore, userid int64) []string {
+	failedList := make([]string, 0)
+	TgUseridToClientIDMutex.RLock()
+	if clids, found := TgUseridToClientID[userid]; found && len(clids) > 0 {
+		TgUseridToClientIDMutex.RUnlock()
+
+		for _, clid := range clids {
+			clientData, err := db.GetClientByID(clid, qrCodeSettings)
+			if err != nil {
+				// return fmt.Errorf("unable to get client")
+				failedList = append(failedList, clid)
+				continue
+			}
+
+			// build config
+			server, _ := db.GetServer()
+			globalSettings, _ := db.GetGlobalSettings()
+			config := BuildClientConfig(*clientData.Client, server, globalSettings)
+			configData := []byte(config)
+			var qrData []byte
+
+			if clientData.Client.PrivateKey != "" {
+				qrData, err = qrcode.Encode(config, qrcode.Medium, 512)
+				if err != nil {
+					// return fmt.Errorf("unable to encode qr")
+					failedList = append(failedList, clientData.Client.Name)
+					continue
+				}
+			}
+
+			userid, err := strconv.ParseInt(clientData.Client.TgUserid, 10, 64)
+			if err != nil {
+				// return fmt.Errorf("tg usrid is unreadable")
+				failedList = append(failedList, clientData.Client.Name)
+				continue
+			}
+
+			err = telegram.SendConfig(userid, clientData.Client.Name, configData, qrData, true)
+			if err != nil {
+				failedList = append(failedList, clientData.Client.Name)
+				continue
+			}
+			time.Sleep(2 * time.Second)
+		}
+	} else {
+		TgUseridToClientIDMutex.RUnlock()
+	}
+	return failedList
+}
+
+func LookupEnvOrString(key string, defaultVal string) string {
+	if val, ok := os.LookupEnv(key); ok {
+		return val
+	}
+	return defaultVal
+}
+
+func LookupEnvOrBool(key string, defaultVal bool) bool {
+	if val, ok := os.LookupEnv(key); ok {
+		v, err := strconv.ParseBool(val)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "LookupEnvOrBool[%s]: %v\n", key, err)
+		}
+		return v
+	}
+	return defaultVal
+}
+
+func LookupEnvOrInt(key string, defaultVal int) int {
+	if val, ok := os.LookupEnv(key); ok {
+		v, err := strconv.Atoi(val)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "LookupEnvOrInt[%s]: %v\n", key, err)
+		}
+		return v
+	}
+	return defaultVal
+}
+
+func LookupEnvOrStrings(key string, defaultVal []string) []string {
+	if val, ok := os.LookupEnv(key); ok {
+		return strings.Split(val, ",")
+	}
+	return defaultVal
+}
+
+func LookupEnvOrFile(key string, defaultVal string) string {
+	if val, ok := os.LookupEnv(key); ok {
+		if file, err := os.Open(val); err == nil {
+			var content string
+			scanner := bufio.NewScanner(file)
+			for scanner.Scan() {
+				content += scanner.Text()
+			}
+			return content
+		}
+	}
+	return defaultVal
+}
+
+func StringFromEmbedFile(embed fs.FS, filename string) (string, error) {
+	file, err := embed.Open(filename)
+	if err != nil {
+		return "", err
+	}
+	content, err := io.ReadAll(file)
+	if err != nil {
+		return "", err
+	}
+	return string(content), nil
+}
+
+func ParseLogLevel(lvl string) (log.Lvl, error) {
+	switch strings.ToLower(lvl) {
+	case "debug":
+		return log.DEBUG, nil
+	case "info":
+		return log.INFO, nil
+	case "warn":
+		return log.WARN, nil
+	case "error":
+		return log.ERROR, nil
+	case "off":
+		return log.OFF, nil
+	default:
+		return log.DEBUG, fmt.Errorf("not a valid log level: %s", lvl)
+	}
+}
+
+// GetCurrentHash returns current hashes
+func GetCurrentHash(db store.IStore) (string, string) {
+	hashClients, _ := dirhash.HashDir(path.Join(db.GetPath(), "clients"), "prefix", dirhash.Hash1)
+	files := append([]string(nil), "prefix/global_settings.json", "prefix/interfaces.json", "prefix/keypair.json")
+
+	osOpen := func(name string) (io.ReadCloser, error) {
+		return os.Open(filepath.Join(path.Join(db.GetPath(), "server"), strings.TrimPrefix(name, "prefix")))
+	}
+	hashServer, _ := dirhash.Hash1(files, osOpen)
+
+	return hashClients, hashServer
+}
+
+func HashesChanged(db store.IStore) bool {
+	old, _ := db.GetHashes()
+	oldClient := old.Client
+	oldServer := old.Server
+	newClient, newServer := GetCurrentHash(db)
+
+	if oldClient != newClient {
+		//fmt.Println("Hash for client differs")
+		return true
+	}
+	if oldServer != newServer {
+		//fmt.Println("Hash for server differs")
+		return true
+	}
+	return false
+}
+
+func UpdateHashes(db store.IStore) error {
+	var clientServerHashes model.ClientServerHashes
+	clientServerHashes.Client, clientServerHashes.Server = GetCurrentHash(db)
+	return db.SaveHashes(clientServerHashes)
+}
+
+func RandomString(length int) string {
+	var seededRand = rand.New(rand.NewSource(time.Now().UnixNano()))
+	charset := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	b := make([]byte, length)
+	for i := range b {
+		b[i] = charset[seededRand.Intn(len(charset))]
+	}
+	return string(b)
+}
+
+func ManagePerms(path string) error {
+	err := os.Chmod(path, 0600)
+	return err
+}
+
+func AddTgToClientID(userid int64, clientID string) {
+	TgUseridToClientIDMutex.Lock()
+	defer TgUseridToClientIDMutex.Unlock()
+
+	if _, ok := TgUseridToClientID[userid]; ok && TgUseridToClientID[userid] != nil {
+		TgUseridToClientID[userid] = append(TgUseridToClientID[userid], clientID)
+	} else {
+		TgUseridToClientID[userid] = []string{clientID}
+	}
+}
+
+func UpdateTgToClientID(userid int64, clientID string) {
+	TgUseridToClientIDMutex.Lock()
+	defer TgUseridToClientIDMutex.Unlock()
+
+	// Detach clientID from any existing userid
+	for uid, cls := range TgUseridToClientID {
+		if cls != nil {
+			filtered := filterStringSlice(cls, clientID)
+			if len(filtered) > 0 {
+				TgUseridToClientID[uid] = filtered
+			} else {
+				delete(TgUseridToClientID, uid)
+			}
+		}
+	}
+
+	// Attach it to the new one
+	if _, ok := TgUseridToClientID[userid]; ok && TgUseridToClientID[userid] != nil {
+		TgUseridToClientID[userid] = append(TgUseridToClientID[userid], clientID)
+	} else {
+		TgUseridToClientID[userid] = []string{clientID}
+	}
+}
+
+func RemoveTgToClientID(clientID string) {
+	TgUseridToClientIDMutex.Lock()
+	defer TgUseridToClientIDMutex.Unlock()
+
+	// Detach clientID from any existing userid
+	for uid, cls := range TgUseridToClientID {
+		if cls != nil {
+			filtered := filterStringSlice(cls, clientID)
+			if len(filtered) > 0 {
+				TgUseridToClientID[uid] = filtered
+			} else {
+				delete(TgUseridToClientID, uid)
+			}
+		}
+	}
+}
+
+func filterStringSlice(s []string, excludedStr string) []string {
+	filtered := s[:0]
+	for _, v := range s {
+		if v != excludedStr {
+			filtered = append(filtered, v)
+		}
+	}
+	return filtered
+}
+
+func GetDBUserCRC32(dbuser model.User) uint32 {
+	buf := new(bytes.Buffer)
+	enc := gob.NewEncoder(buf)
+	if err := enc.Encode(dbuser); err != nil {
+		panic("model.User is gob-incompatible, session verification is impossible")
+	}
+	return crc32.ChecksumIEEE(buf.Bytes())
+}
+
+func ConcatMultipleSlices(slices ...[]byte) []byte {
+	var totalLen int
+
+	for _, s := range slices {
+		totalLen += len(s)
+	}
+
+	result := make([]byte, totalLen)
+
+	var i int
+
+	for _, s := range slices {
+		i += copy(result[i:], s)
+	}
+
+	return result
+}
+
+func GetCookiePath() string {
+	cookiePath := BasePath
+	if cookiePath == "" {
+		cookiePath = "/"
+	}
+	return cookiePath
+}