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package proton
import (
"bytes"
"encoding/base64"
"io"
"testing"
"github.com/ProtonMail/gluon/rfc822"
"github.com/ProtonMail/gopenpgp/v2/crypto"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestEncryptMessage_Simple(t *testing.T) {
const message = `From: Nathaniel Borenstein <nsb@bellcore.com>
To: Ned Freed <ned@innosoft.com>
Subject: Sample message (import 2)
MIME-Version: 1.0
Content-type: text/plain
This is explicitly typed plain ASCII text.
`
key, err := crypto.GenerateKey("foobar", "foo@bar.com", "x25519", 0)
require.NoError(t, err)
kr, err := crypto.NewKeyRing(key)
require.NoError(t, err)
encryptedMessage, err := EncryptRFC822(kr, []byte(message))
require.NoError(t, err)
section := rfc822.Parse(encryptedMessage)
// Check root header:
header, err := section.ParseHeader()
require.NoError(t, err)
assert.Equal(t, header.Get("From"), "Nathaniel Borenstein <nsb@bellcore.com>")
assert.Equal(t, header.Get("To"), "Ned Freed <ned@innosoft.com>")
assert.Equal(t, header.Get("Subject"), "Sample message (import 2)")
assert.Equal(t, header.Get("MIME-Version"), "1.0")
// Read the body.
body, err := section.DecodedBody()
require.NoError(t, err)
// Unarmor the PGP message.
enc, err := crypto.NewPGPMessageFromArmored(string(body))
require.NoError(t, err)
// Decrypt the PGP message.
dec, err := kr.Decrypt(enc, nil, crypto.GetUnixTime())
require.NoError(t, err)
require.Equal(t, "This is explicitly typed plain ASCII text.\n", dec.GetString())
}
func TestEncryptMessage_MultipleTextParts(t *testing.T) {
const message = `From: Nathaniel Borenstein <nsb@bellcore.com>
To: Ned Freed <ned@innosoft.com>
Subject: Sample message (import 2)
MIME-Version: 1.0
Content-type: multipart/mixed; boundary="simple boundary"
Received: from mail.protonmail.ch by mail.protonmail.ch; Tue, 25 Nov 2016
This is the preamble. It is to be ignored, though it
is a handy place for mail composers to include an
explanatory note to non-MIME compliant readers.
--simple boundary
This is implicitly typed plain ASCII text.
It does NOT end with a linebreak.
--simple boundary
Content-type: text/plain; charset=us-ascii
This is explicitly typed plain ASCII text.
It DOES end with a linebreak.
--simple boundary--
This is the epilogue. It is also to be ignored.
`
key, err := crypto.GenerateKey("foobar", "foo@bar.com", "x25519", 0)
require.NoError(t, err)
kr, err := crypto.NewKeyRing(key)
require.NoError(t, err)
encryptedMessage, err := EncryptRFC822(kr, []byte(message))
require.NoError(t, err)
section := rfc822.Parse(encryptedMessage)
{
// Check root header:
header, err := section.ParseHeader()
require.NoError(t, err)
assert.Equal(t, header.Get("From"), "Nathaniel Borenstein <nsb@bellcore.com>")
assert.Equal(t, header.Get("To"), "Ned Freed <ned@innosoft.com>")
assert.Equal(t, header.Get("Subject"), "Sample message (import 2)")
assert.Equal(t, header.Get("MIME-Version"), "1.0")
assert.Equal(t, header.Get("Received"), "from mail.protonmail.ch by mail.protonmail.ch; Tue, 25 Nov 2016")
mediaType, params, err := rfc822.ParseMediaType(header.Get("Content-Type"))
require.NoError(t, err)
assert.Equal(t, "multipart/encrypted", mediaType)
assert.Equal(t, "application/pgp-encrypted", params["protocol"])
assert.NotEmpty(t, params["boundary"])
}
children, err := section.Children()
require.NoError(t, err)
require.Equal(t, 2, len(children))
{
// check first child.
child := children[0]
header, err := child.ParseHeader()
require.NoError(t, err)
assert.Equal(t, header.Get("Content-Description"), "PGP/MIME version identification")
assert.Equal(t, header.Get("Content-Type"), "application/pgp-encrypted")
assert.Equal(t, []byte("Version: 1"), child.Body())
}
{
// check second child.
child := children[1]
header, err := child.ParseHeader()
require.NoError(t, err)
assert.Equal(t, header.Get("Content-Description"), "OpenPGP encrypted message")
assert.Equal(t, header.Get("Content-Disposition"), "inline; filename=encrypted.asc")
assert.Equal(t, header.Get("Content-type"), "application/octet-stream; name=encrypted.asc")
body := child.Body()
assert.True(t, bytes.HasPrefix(body, []byte("-----BEGIN PGP MESSAGE-----")))
assert.True(t, bytes.HasSuffix(body, []byte("-----END PGP MESSAGE-----")))
}
}
func TestEncryptMessage_Attachment(t *testing.T) {
const message = `From: Nathaniel Borenstein <nsb@bellcore.com>
To: Ned Freed <ned@innosoft.com>
Subject: Sample message (import 2)
MIME-Version: 1.0
Content-type: multipart/mixed; boundary="simple boundary"
--simple boundary
Content-type: text/plain; charset=us-ascii
Hello world
--simple boundary
Content-Type: application/pdf; name="test.pdf"
Content-Disposition: attachment; filename="test.pdf"
Content-Transfer-Encoding: base64
SGVsbG8gQXR0YWNobWVudA==
--simple boundary--
`
key, err := crypto.GenerateKey("foobar", "foo@bar.com", "x25519", 0)
require.NoError(t, err)
kr, err := crypto.NewKeyRing(key)
require.NoError(t, err)
encryptedMessage, err := EncryptRFC822(kr, []byte(message))
require.NoError(t, err)
section := rfc822.Parse(encryptedMessage)
{
// Check root header:
header, err := section.ParseHeader()
require.NoError(t, err)
assert.Equal(t, header.Get("From"), "Nathaniel Borenstein <nsb@bellcore.com>")
assert.Equal(t, header.Get("To"), "Ned Freed <ned@innosoft.com>")
assert.Equal(t, header.Get("Subject"), "Sample message (import 2)")
assert.Equal(t, header.Get("MIME-Version"), "1.0")
mediaType, params, err := rfc822.ParseMediaType(header.Get("Content-Type"))
require.NoError(t, err)
assert.Equal(t, "multipart/mixed", mediaType)
assert.NotEmpty(t, params["boundary"])
}
children, err := section.Children()
require.NoError(t, err)
require.Equal(t, 2, len(children))
{
// check first child.
child := children[0]
header, err := child.ParseHeader()
require.NoError(t, err)
header.Entries(func(key, value string) {
// Old header should be deleted.
assert.NotEqual(t, key, "Content-type")
assert.NotEqual(t, value, "text/plain; charset=us-ascii")
})
assert.Equal(t, header.Get("Content-Type"), "text/plain; charset=utf-8")
}
{
// check second child.
child := children[1]
header, err := child.ParseHeader()
require.NoError(t, err)
assert.Equal(t, header.Get("Content-Transfer-Encoding"), "base64")
assert.Equal(t, header.Get("Content-Disposition"), `attachment; filename="test.pdf"`)
assert.Equal(t, header.Get("Content-type"), `application/pdf; name="test.pdf"`)
body := child.Body()
// Read the body.
bodyDecoded, err := io.ReadAll(base64.NewDecoder(base64.StdEncoding, bytes.NewReader(body)))
require.NoError(t, err)
// Unarmor the PGP message.
enc := crypto.NewPGPMessage(bodyDecoded)
// Decrypt the PGP message.
dec, err := kr.Decrypt(enc, nil, crypto.GetUnixTime())
require.NoError(t, err)
require.Equal(t, "Hello Attachment", dec.GetString())
}
}
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