init - add project files

snailmail/mail.go

@@ -0,0 +1,67 @@
+// This package wraps around the stdlib's smtp client implementation, allowing
+// for easily sending emails. This package should be used alongside the "views"
+// package, to generate an HTML template for use in an email.
+package snailmail
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"log"
+	"mime"
+	"net/mail"
+	"net/smtp"
+	"maxwarden/config"
+	"strings"
+	"time"
+)
+
+const (
+	TYPE_TEXT = iota
+	TYPE_HTML = iota
+)
+
+type Email struct {
+	Recipients []string
+	Subject    string
+	Body       *bytes.Buffer
+}
+
+func SendMail(message Email, mailtype int) error {
+	recipientString := strings.Join(message.Recipients, ",")
+	from := mail.Address{Name: config.GetConfig().SmtpDisplayFrom, Address: config.GetConfig().SmtpUsername}
+
+	header := make(map[string]string)
+	header["To"] = recipientString
+	header["From"] = from.String()
+	header["Subject"] = mime.QEncoding.Encode("UTF-8", message.Subject)
+	header["MIME-Version"] = "1.0"
+	header["Content-Transfer-Encoding"] = "base64"
+	header["Date"] = time.Now().Format(time.RFC1123)
+
+	if mailtype == TYPE_HTML {
+		header["Content-Type"] = "text/html; charset=\"utf-8\""
+	} else {
+		header["Content-Type"] = "text/plain; charset=\"utf-8\""
+	}
+
+	email := ""
+	for k, v := range header {
+		email += fmt.Sprintf("%s: %s\r\n", k, v)
+	}
+	email += "\r\n" + base64.StdEncoding.EncodeToString(message.Body.Bytes())
+
+	var auth smtp.Auth = nil
+
+	if config.GetConfig().SmtpRequireAuth {
+		auth = smtp.PlainAuth("", config.GetConfig().SmtpUsername, config.GetConfig().SmtpPassword, config.GetConfig().SmtpServer)
+	}
+
+	err := smtp.SendMail(config.GetConfig().SmtpServer+":"+config.GetConfig().SmtpPort, auth, config.GetConfig().SmtpUsername, message.Recipients, []byte(email))
+	if err != nil {
+		log.Println(err)
+		return err
+	}
+
+	return nil
+}