73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
/*
|
|
GoToSocial
|
|
Copyright (C) 2021-2023 GoToSocial Authors admin@gotosocial.org
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package email
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"text/template"
|
|
)
|
|
|
|
func loadTemplates(templateBaseDir string) (*template.Template, error) {
|
|
if !filepath.IsAbs(templateBaseDir) {
|
|
cwd, err := os.Getwd()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("error getting current working directory: %s", err)
|
|
}
|
|
templateBaseDir = filepath.Join(cwd, templateBaseDir)
|
|
}
|
|
|
|
// look for all templates that start with 'email_'
|
|
return template.ParseGlob(filepath.Join(templateBaseDir, "email_*"))
|
|
}
|
|
|
|
// https://datatracker.ietf.org/doc/html/rfc2822
|
|
// I did not read the RFC, I just copy and pasted from
|
|
// https://pkg.go.dev/net/smtp#SendMail
|
|
// and it did seem to work.
|
|
func assembleMessage(mailSubject string, mailBody string, mailTo string, mailFrom string) ([]byte, error) {
|
|
if strings.Contains(mailSubject, "\r") || strings.Contains(mailSubject, "\n") {
|
|
return nil, errors.New("email subject must not contain newline characters")
|
|
}
|
|
|
|
if strings.Contains(mailFrom, "\r") || strings.Contains(mailFrom, "\n") {
|
|
return nil, errors.New("email from address must not contain newline characters")
|
|
}
|
|
|
|
if strings.Contains(mailTo, "\r") || strings.Contains(mailTo, "\n") {
|
|
return nil, errors.New("email to address must not contain newline characters")
|
|
}
|
|
|
|
// normalize the message body to use CRLF line endings
|
|
mailBody = strings.ReplaceAll(mailBody, "\r\n", "\n")
|
|
mailBody = strings.ReplaceAll(mailBody, "\n", "\r\n")
|
|
|
|
msg := []byte(
|
|
"To: " + mailTo + "\r\n" +
|
|
"Subject: " + mailSubject + "\r\n" +
|
|
"\r\n" +
|
|
mailBody + "\r\n",
|
|
)
|
|
|
|
return msg, nil
|
|
}
|