[优化] go 引用调整

openflare-server/utils/mail/email.go

@@ -0,0 +1,74 @@
+package mail
+
+import (
+	"crypto/tls"
+	"encoding/base64"
+	"fmt"
+	"net/smtp"
+	"strings"
+)
+
+// SMTPConfig holds all the configuration parameters required to send an email.
+type SMTPConfig struct {
+	Server     string
+	Port       int
+	Account    string
+	Token      string
+	SystemName string
+}
+
+// SendEmail sends an HTML email to the receiver using the provided SMTP configuration.
+func SendEmail(config SMTPConfig, subject string, receiver string, content string) error {
+	encodedSubject := fmt.Sprintf("=?UTF-8?B?%s?=", base64.StdEncoding.EncodeToString([]byte(subject)))
+	mail := []byte(fmt.Sprintf("To: %s\r\n"+
+		"From: %s<%s>\r\n"+
+		"Subject: %s\r\n"+
+		"Content-Type: text/html; charset=UTF-8\r\n\r\n%s\r\n",
+		receiver, config.SystemName, config.Account, encodedSubject, content))
+	auth := smtp.PlainAuth("", config.Account, config.Token, config.Server)
+	addr := fmt.Sprintf("%s:%d", config.Server, config.Port)
+	to := strings.Split(receiver, ";")
+	var err error
+	if config.Port == 465 {
+		tlsConfig := &tls.Config{
+			InsecureSkipVerify: true,
+			ServerName:         config.Server,
+		}
+		conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%d", config.Server, config.Port), tlsConfig)
+		if err != nil {
+			return err
+		}
+		client, err := smtp.NewClient(conn, config.Server)
+		if err != nil {
+			return err
+		}
+		defer client.Close()
+		if err = client.Auth(auth); err != nil {
+			return err
+		}
+		if err = client.Mail(config.Account); err != nil {
+			return err
+		}
+		receiverEmails := strings.Split(receiver, ";")
+		for _, r := range receiverEmails {
+			if err = client.Rcpt(r); err != nil {
+				return err
+			}
+		}
+		w, err := client.Data()
+		if err != nil {
+			return err
+		}
+		_, err = w.Write(mail)
+		if err != nil {
+			return err
+		}
+		err = w.Close()
+		if err != nil {
+			return err
+		}
+	} else {
+		err = smtp.SendMail(addr, auth, config.Account, to, mail)
+	}
+	return err
+}