summaryrefslogtreecommitdiff
path: root/commit.c
diff options
context:
space:
mode:
authorJunio C Hamano <gitster@pobox.com>2011-10-18 15:53:23 -0700
committerJunio C Hamano <gitster@pobox.com>2011-11-12 22:27:38 -0800
commit0c37f1fce6cb7997dbb2703d35eef0dfd86c5070 (patch)
treefdef185d235865ca3caccf1f8f0d2a1a723c863f /commit.c
parentba3c69a9ee1894de397b60d3b548383e13ef49e3 (diff)
downloadgit-0c37f1fce6cb7997dbb2703d35eef0dfd86c5070.tar.gz
log: --show-signature
This teaches the "log" family of commands to pass the GPG signature in the commit objects to "gpg --verify" via the verify_signed_buffer() interface used to verify signed tag objects. E.g. $ git show --show-signature -s HEAD shows GPG output in the header part of the output. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'commit.c')
-rw-r--r--commit.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/commit.c b/commit.c
index f00076e91f..27c7226abb 100644
--- a/commit.c
+++ b/commit.c
@@ -877,6 +877,50 @@ static int do_sign_commit(struct strbuf *buf, const char *keyid)
return 0;
}
+int parse_signed_commit(const unsigned char *sha1,
+ struct strbuf *payload, struct strbuf *signature)
+{
+ unsigned long size;
+ enum object_type type;
+ char *buffer = read_sha1_file(sha1, &type, &size);
+ int in_signature, saw_signature = -1;
+ char *line, *tail;
+
+ if (!buffer || type != OBJ_COMMIT)
+ goto cleanup;
+
+ line = buffer;
+ tail = buffer + size;
+ in_signature = 0;
+ saw_signature = 0;
+ while (line < tail) {
+ const char *sig = NULL;
+ char *next = memchr(line, '\n', tail - line);
+
+ next = next ? next + 1 : tail;
+ if (in_signature && line[0] == ' ')
+ sig = line + 1;
+ else if (!prefixcmp(line, gpg_sig_header) &&
+ line[gpg_sig_header_len] == ' ')
+ sig = line + gpg_sig_header_len + 1;
+ if (sig) {
+ strbuf_add(signature, sig, next - sig);
+ saw_signature = 1;
+ in_signature = 1;
+ } else {
+ if (*line == '\n')
+ /* dump the whole remainder of the buffer */
+ next = tail;
+ strbuf_add(payload, line, next - line);
+ in_signature = 0;
+ }
+ line = next;
+ }
+ cleanup:
+ free(buffer);
+ return saw_signature;
+}
+
static void handle_signed_tag(struct commit *parent, struct commit_extra_header ***tail)
{
struct merge_remote_desc *desc;