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Merge pull request #719 from Aerion/decode-quoted-printable

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Add quoted-printable decoding to smtp server
This commit is contained in:
Philipp C. Heckel 2023-05-09 09:37:27 -04:00 committed by GitHub
commit 931d3ced09
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2 changed files with 80 additions and 0 deletions
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3
server/smtp_server.go
View file

@ -9,6 +9,7 @@ import (
"io"
"mime"
"mime/multipart"
"mime/quotedprintable"
"net"
"net/http"
"net/http/httptest"
@ -265,6 +266,8 @@ func readMultipartMailBody(body io.Reader, params map[string]string, depth int)
func readPlainTextMailBody(reader io.Reader, transferEncoding string) (string, error) {
if strings.ToLower(transferEncoding) == "base64" {
reader = base64.NewDecoder(base64.StdEncoding, reader)
} else if strings.ToLower(transferEncoding) == "quoted-printable" {
reader = quotedprintable.NewReader(reader)
}
body, err := io.ReadAll(reader)
if err != nil {

77
server/smtp_server_test.go
View file

@ -303,6 +303,39 @@ BBBBBBBBBBBBBBBBBBBBBBBBB`
writeAndReadUntilLine(t, email, c, scanner, "250 2.0.0 OK: queued")
}
func TestSmtpBackend_Plaintext_QuotedPrintable(t *testing.T) {
email := `EHLO example.com
MAIL FROM: phil@example.com
RCPT TO: mytopic@ntfy.sh
DATA
Date: Tue, 28 Dec 2021 00:30:10 +0100
Message-ID: <CAAvm79YP0C=Rt1N=KWmSUBB87KK2rRChmdzKqF1vCwMEUiVzLQ@mail.gmail.com>
Subject: and one more
From: Phil <phil@example.com>
To: mytopic@ntfy.sh
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
what's
=C3=A0&=C3=A9"'(-=C3=A8_=C3=A7=C3=A0)
=3D=3D=3D=3D=3D
up
.
`
s, c, conf, scanner := newTestSMTPServer(t, func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, "/mytopic", r.URL.Path)
require.Equal(t, "and one more", r.Header.Get("Title"))
require.Equal(t, `what's
à&é"'(-è_çà)
=====
up`, readAll(t, r.Body))
})
conf.SMTPServerAddrPrefix = ""
defer s.Close()
defer c.Close()
writeAndReadUntilLine(t, email, c, scanner, "250 2.0.0 OK: queued")
}
func TestSmtpBackend_Unsupported(t *testing.T) {
email := `EHLO example.com
MAIL FROM: phil@example.com
@ -390,6 +423,50 @@ L0VOIj4KClRoaXMgaXMgYSB0ZXN0IG1lc3NhZ2UgZnJvbSBUcnVlTkFTIENPUkUuCg==
writeAndReadUntilLine(t, email, c, scanner, "250 2.0.0 OK: queued")
}
func TestSmtpBackend_MultipartQuotedPrintable(t *testing.T) {
email := `EHLO example.com
MAIL FROM: phil@example.com
RCPT TO: ntfy-mytopic@ntfy.sh
DATA
MIME-Version: 1.0
Date: Tue, 28 Dec 2021 00:30:10 +0100
Message-ID: <CAAvm79YP0C=Rt1N=KWmSUBB87KK2rRChmdzKqF1vCwMEUiVzLQ@mail.gmail.com>
Subject: and one more
From: Phil <phil@example.com>
To: ntfy-mytopic@ntfy.sh
Content-Type: multipart/alternative; boundary="000000000000f3320b05d42915c9"
--000000000000f3320b05d42915c9
Content-Type: text/html; charset="UTF-8"
html, ignore me
--000000000000f3320b05d42915c9
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
what's
=C3=A0&=C3=A9"'(-=C3=A8_=C3=A7=C3=A0)
=3D=3D=3D=3D=3D
up
--000000000000f3320b05d42915c9--
.
`
s, c, _, scanner := newTestSMTPServer(t, func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, "/mytopic", r.URL.Path)
require.Equal(t, "and one more", r.Header.Get("Title"))
require.Equal(t, `what's
à&é"'(-è_çà)
=====
up`, readAll(t, r.Body))
})
defer s.Close()
defer c.Close()
writeAndReadUntilLine(t, email, c, scanner, "250 2.0.0 OK: queued")
}
func TestSmtpBackend_NestedMultipartBase64(t *testing.T) {
email := `EHLO example.com
MAIL FROM: test@mydomain.me