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| author | Sebastian Götte <jaseg@physik.tu-berlin.de> | 2013-03-31 18:02:24 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2013-03-31 19:23:59 -0700 |
| commit | efed0022492b81bf59d29193c4ffe96492dd9e9b (patch) | |
| tree | 51a16967d90213fc5746c590dbd49c4193d5b20d /builtin | |
| parent | f8aae8d0efccd268babd482f10709b4f86a9f32e (diff) | |
| download | git-efed0022492b81bf59d29193c4ffe96492dd9e9b.tar.gz | |
merge/pull: verify GPG signatures of commits being merged
When --verify-signatures is specified on the command-line of git-merge
or git-pull, check whether the commits being merged have good gpg
signatures and abort the merge in case they do not. This allows e.g.
auto-deployment from untrusted repo hosts.
Signed-off-by: Sebastian Götte <jaseg@physik-pool.tu-berlin.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin')
| -rw-r--r-- | builtin/merge.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/builtin/merge.c b/builtin/merge.c index 7c8922c8b0..e57c42c622 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -49,7 +49,7 @@ static const char * const builtin_merge_usage[] = { static int show_diffstat = 1, shortlog_len = -1, squash; static int option_commit = 1, allow_fast_forward = 1; static int fast_forward_only, option_edit = -1; -static int allow_trivial = 1, have_message; +static int allow_trivial = 1, have_message, verify_signatures; static int overwrite_ignore = 1; static struct strbuf merge_msg = STRBUF_INIT; static struct strategy **use_strategies; @@ -199,6 +199,8 @@ static struct option builtin_merge_options[] = { OPT_BOOLEAN(0, "ff-only", &fast_forward_only, N_("abort if fast-forward is not possible")), OPT_RERERE_AUTOUPDATE(&allow_rerere_auto), + OPT_BOOL(0, "verify-signatures", &verify_signatures, + N_("Verify that the named commit has a valid GPG signature")), OPT_CALLBACK('s', "strategy", &use_strategies, N_("strategy"), N_("merge strategy to use"), option_parse_strategy), OPT_CALLBACK('X', "strategy-option", &xopts, N_("option=value"), @@ -1233,6 +1235,36 @@ int cmd_merge(int argc, const char **argv, const char *prefix) usage_with_options(builtin_merge_usage, builtin_merge_options); + if (verify_signatures) { + for (p = remoteheads; p; p = p->next) { + struct commit *commit = p->item; + char hex[41]; + struct signature_check signature_check; + memset(&signature_check, 0, sizeof(signature_check)); + + check_commit_signature(commit, &signature_check); + + strcpy(hex, find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV)); + switch (signature_check.result) { + case 'G': + break; + case 'B': + die(_("Commit %s has a bad GPG signature " + "allegedly by %s."), hex, signature_check.signer); + default: /* 'N' */ + die(_("Commit %s does not have a GPG signature."), hex); + } + if (verbosity >= 0 && signature_check.result == 'G') + printf(_("Commit %s has a good GPG signature by %s\n"), + hex, signature_check.signer); + + free(signature_check.gpg_output); + free(signature_check.gpg_status); + free(signature_check.signer); + free(signature_check.key); + } + } + strbuf_addstr(&buf, "merge"); for (p = remoteheads; p; p = p->next) strbuf_addf(&buf, " %s", merge_remote_util(p->item)->name); |