From: Michael J Gruber <git@xxxxxxxxxxxxxxxxxxxx>
When we create a signature, it may happen that gpg returns with
"success" but not with an actual detached signature on stdout.
Check for the correct signature creation status to catch these cases
better. Really, --status-fd parsing is the only way to check gpg status
reliably. We do the same for verify already.
Signed-off-by: Michael J Gruber <git@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
gpg-interface.c | 8 ++++++--
t/t7004-tag.sh | 9 ++++++++-
2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/gpg-interface.c b/gpg-interface.c
index 74f08a2..08356f9 100644
--- a/gpg-interface.c
+++ b/gpg-interface.c
@@ -153,9 +153,11 @@ int sign_buffer(struct strbuf *buffer, struct strbuf *signature, const char *sig
struct child_process gpg = CHILD_PROCESS_INIT;
int ret;
size_t i, j, bottom;
+ struct strbuf gpg_status = STRBUF_INIT;
argv_array_pushl(&gpg.args,
gpg_program,
+ "--status-fd=2",
"-bsau", signing_key,
NULL);
@@ -167,10 +169,12 @@ int sign_buffer(struct strbuf *buffer, struct strbuf *signature, const char *sig
*/
sigchain_push(SIGPIPE, SIG_IGN);
ret = pipe_command(&gpg, buffer->buf, buffer->len,
- signature, 1024, NULL, 0);
+ signature, 1024, &gpg_status, 0);
sigchain_pop(SIGPIPE);
- if (ret || signature->len == bottom)
+ ret |= !strstr(gpg_status.buf, "\n[GNUPG:] SIG_CREATED ");
+ strbuf_release(&gpg_status);
+ if (ret)
return error(_("gpg failed to sign the data"));
/* Strip CR from the line endings, in case we are on Windows. */
diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index f9b7d79..8b0f71a 100755
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -1202,10 +1202,17 @@ test_expect_success GPG,RFC1991 \
# try to sign with bad user.signingkey
git config user.signingkey BobTheMouse
test_expect_success GPG \
- 'git tag -s fails if gpg is misconfigured' \
+ 'git tag -s fails if gpg is misconfigured (bad key)' \
'test_must_fail git tag -s -m tail tag-gpg-failure'
git config --unset user.signingkey
+# try to produce invalid signature
+test_expect_success GPG \
+ 'git tag -s fails if gpg is misconfigured (bad signature format)' \
+ 'test_config gpg.program echo &&
+ test_must_fail git tag -s -m tail tag-gpg-failure'
+
+
# try to verify without gpg:
rm -rf gpghome
--
2.9.0.165.g4aacdc3
--
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