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Add support to SSL/TLS/SSLTLS encryption for SMTP (#221)

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Jag_k 2022-09-30 11:26:17 +03:00 • committed by GitHub
parent 2c2db61158
commit 63d6e1f391
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3 changed files with 25 additions and 7 deletions
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24
emailer/smtp.go
View file

@ -3,9 +3,9 @@ package emailer
import (
"crypto/tls"
"fmt"
"time"
mail "github.com/xhit/go-simple-mail/v2"
"strings"
"time"
)
type SmtpMail struct {
@ -14,6 +14,7 @@ type SmtpMail struct {
username string
password string
authType mail.AuthType
encryption mail.Encryption
noTLSCheck bool
fromName string
from string
@ -30,8 +31,21 @@ func authType(authType string) mail.AuthType {
}
}
func NewSmtpMail(hostname string, port int, username string, password string, noTLSCheck bool, auth string, fromName, from string) *SmtpMail {
ans := SmtpMail{hostname: hostname, port: port, username: username, password: password, noTLSCheck: noTLSCheck, fromName: fromName, from: from, authType: authType(auth)}
func encryptionType(encryptionType string) mail.Encryption {
switch strings.ToUpper(encryptionType) {
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, noTLSCheck bool, auth string, fromName, from string, encryption string) *SmtpMail {
ans := SmtpMail{hostname: hostname, port: port, username: username, password: password, noTLSCheck: noTLSCheck, fromName: fromName, from: from, authType: authType(auth), encryption: encryptionType(encryption)}
return &ans
}
@ -50,7 +64,7 @@ func (o *SmtpMail) Send(toName string, to string, subject string, content string
server.Authentication = o.authType
server.Username = o.username
server.Password = o.password
server.Encryption = mail.EncryptionSTARTTLS
server.Encryption = o.encryption
server.KeepAlive = false
server.ConnectTimeout = 10 * time.Second
server.SendTimeout = 10 * time.Second

7
main.go
View file

@ -33,6 +33,7 @@ var (
flagSmtpPassword string
flagSmtpAuthType string = "None"
flagSmtpNoTLSCheck bool = false
flagSmtpEncryption string = "STARTTLS"
flagSendgridApiKey string
flagEmailFrom string
flagEmailFromName string = "WireGuard UI"
@ -60,7 +61,8 @@ func init() {
flag.StringVar(&flagSmtpUsername, "smtp-username", util.LookupEnvOrString("SMTP_USERNAME", flagSmtpUsername), "SMTP Username")
flag.StringVar(&flagSmtpPassword, "smtp-password", util.LookupEnvOrString("SMTP_PASSWORD", flagSmtpPassword), "SMTP Password")
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(&flagSmtpAuthType, "smtp-auth-type", util.LookupEnvOrString("SMTP_AUTH_TYPE", flagSmtpAuthType), "SMTP Auth Type : Plain or None.")
flag.StringVar(&flagSmtpEncryption, "smtp-encryption", util.LookupEnvOrString("SMTP_ENCRYPTION", flagSmtpEncryption), "SMTP Encryption : 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(&flagSendgridApiKey, "sendgrid-api-key", util.LookupEnvOrString("SENDGRID_API_KEY", flagSendgridApiKey), "Your sendgrid api key.")
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.")
@ -78,6 +80,7 @@ func init() {
util.SmtpPassword = flagSmtpPassword
util.SmtpAuthType = flagSmtpAuthType
util.SmtpNoTLSCheck = flagSmtpNoTLSCheck
util.SmtpEncryption = flagSmtpEncryption
util.SendgridApiKey = flagSendgridApiKey
util.EmailFrom = flagEmailFrom
util.EmailFromName = flagEmailFromName
@ -138,7 +141,7 @@ func main() {
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.SmtpNoTLSCheck, util.SmtpAuthType, util.EmailFromName, util.EmailFrom)
sendmail = emailer.NewSmtpMail(util.SmtpHostname, util.SmtpPort, util.SmtpUsername, util.SmtpPassword, util.SmtpNoTLSCheck, util.SmtpAuthType, util.EmailFromName, util.EmailFrom, util.SmtpEncryption)
}
app.GET(util.BasePath+"/_health", handler.Health())

1
util/config.go
View file

@ -11,6 +11,7 @@ var (
SmtpUsername string
SmtpPassword string
SmtpNoTLSCheck bool
SmtpEncryption string
SmtpAuthType string
SendgridApiKey string
EmailFrom string