mirror of
https://github.com/foxcpp/maddy.git
synced 2025-04-04 21:47:40 +03:00
66 lines
2.2 KiB
Go
66 lines
2.2 KiB
Go
/*
|
|
Maddy Mail Server - Composable all-in-one email server.
|
|
Copyright © 2019-2020 Max Mazurov <fox.cpp@disroot.org>, Maddy Mail Server contributors
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package smtp
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
"time"
|
|
)
|
|
|
|
// Taken from https://github.com/emersion/go-imap/blob/09c1d69/date.go.
|
|
|
|
var dateTimeLayouts = [...]string{
|
|
// Defined in RFC 5322 section 3.3, mentioned as env-date in RFC 3501 page 84.
|
|
"Mon, 02 Jan 2006 15:04:05 -0700",
|
|
"_2 Jan 2006 15:04:05 -0700",
|
|
"_2 Jan 2006 15:04:05 MST",
|
|
"_2 Jan 2006 15:04 -0700",
|
|
"_2 Jan 2006 15:04 MST",
|
|
"_2 Jan 06 15:04:05 -0700",
|
|
"_2 Jan 06 15:04:05 MST",
|
|
"_2 Jan 06 15:04 -0700",
|
|
"_2 Jan 06 15:04 MST",
|
|
"Mon, _2 Jan 2006 15:04:05 -0700",
|
|
"Mon, _2 Jan 2006 15:04:05 MST",
|
|
"Mon, _2 Jan 2006 15:04 -0700",
|
|
"Mon, _2 Jan 2006 15:04 MST",
|
|
"Mon, _2 Jan 06 15:04:05 -0700",
|
|
"Mon, _2 Jan 06 15:04:05 MST",
|
|
"Mon, _2 Jan 06 15:04 -0700",
|
|
"Mon, _2 Jan 06 15:04 MST",
|
|
}
|
|
|
|
// TODO: this is a blunt way to strip any trailing CFWS (comment). A sharper
|
|
// one would strip multiple CFWS, and only if really valid according to
|
|
// RFC5322.
|
|
var commentRE = regexp.MustCompile(`[ \t]+\(.*\)$`)
|
|
|
|
// Try parsing the date based on the layouts defined in RFC 5322, section 3.3.
|
|
// Inspired by https://github.com/golang/go/blob/master/src/net/mail/message.go
|
|
func parseMessageDateTime(maybeDate string) (time.Time, error) {
|
|
maybeDate = commentRE.ReplaceAllString(maybeDate, "")
|
|
for _, layout := range dateTimeLayouts {
|
|
parsed, err := time.Parse(layout, maybeDate)
|
|
if err == nil {
|
|
return parsed, nil
|
|
}
|
|
}
|
|
return time.Time{}, fmt.Errorf("date %s could not be parsed", maybeDate)
|
|
}
|