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gpg: fix panic when signing an unparsable message 

Fix the following error:

panic()
	runtime/panic.go:838
bytes.(*Buffer).ReadFrom()
	bytes/buffer.go:204
io.copyBuffer()
	io/io.go:412
io.Copy()
	io/io.go:385
git.sr.ht/~rjarry/aerc/lib/crypto/gpg/gpgbin.Sign()
	git.sr.ht/~rjarry/aerc/lib/crypto/gpg/gpgbin/sign.go:25
git.sr.ht/~rjarry/aerc/lib/crypto/gpg.(*Signer).Close()
	git.sr.ht/~rjarry/aerc/lib/crypto/gpg/writer.go:52
git.sr.ht/~rjarry/aerc/lib/crypto/gpg.multiCloser.Close()
	git.sr.ht/~rjarry/aerc/lib/crypto/gpg/writer.go:92
git.sr.ht/~rjarry/aerc/widgets.(*Composer).WriteMessage()
	git.sr.ht/~rjarry/aerc/widgets/compose.go:601
git.sr.ht/~rjarry/aerc/commands/compose.Send.Execute.func1()
	git.sr.ht/~rjarry/aerc/commands/compose/send.go:127

Fixes: https://todo.sr.ht/~rjarry/aerc/53
Signed-off-by: Moritz Poldrack <git@moritz.sh>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>
This commit is contained in:
Moritz Poldrack 2022-07-01 19:11:33 +02:00 committed by Robin Jarry
parent e2be2dd4c0
commit 80f90c0d41
1 changed files with 5 additions and 1 deletions
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6
lib/crypto/gpg/gpgbin/sign.go
View File

@ -2,6 +2,7 @@ package gpgbin
import (
"bytes"
"fmt"
"io"
"git.sr.ht/~rjarry/aerc/models"
@ -20,7 +21,10 @@ func Sign(r io.Reader, from string) ([]byte, string, error) {
outRdr := bytes.NewReader(g.stdout.Bytes())
var md models.MessageDetails
parse(outRdr, &md)
err := parse(outRdr, &md)
if err != nil {
return nil, "", fmt.Errorf("failed to parse messagedetails: %v", err)
}
var buf bytes.Buffer
io.Copy(&buf, md.Body)
return buf.Bytes(), md.Micalg, nil