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git/builtin/verify-commit.c
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/* | |
* Builtin "git commit-commit" | |
* | |
* Copyright (c) 2014 Michael J Gruber <git@drmicha.warpmail.net> | |
* | |
* Based on git-verify-tag | |
*/ | |
#include "cache.h" | |
#include "builtin.h" | |
#include "commit.h" | |
#include "run-command.h" | |
#include <signal.h> | |
#include "parse-options.h" | |
#include "gpg-interface.h" | |
static const char * const verify_commit_usage[] = { | |
N_("git verify-commit [-v | --verbose] <commit>..."), | |
NULL | |
}; | |
static int run_gpg_verify(const unsigned char *sha1, const char *buf, unsigned long size, unsigned flags) | |
{ | |
struct signature_check signature_check; | |
int ret; | |
memset(&signature_check, 0, sizeof(signature_check)); | |
ret = check_commit_signature(lookup_commit(sha1), &signature_check); | |
print_signature_buffer(&signature_check, flags); | |
signature_check_clear(&signature_check); | |
return ret; | |
} | |
static int verify_commit(const char *name, unsigned flags) | |
{ | |
enum object_type type; | |
unsigned char sha1[20]; | |
char *buf; | |
unsigned long size; | |
int ret; | |
if (get_sha1(name, sha1)) | |
return error("commit '%s' not found.", name); | |
buf = read_sha1_file(sha1, &type, &size); | |
if (!buf) | |
return error("%s: unable to read file.", name); | |
if (type != OBJ_COMMIT) | |
return error("%s: cannot verify a non-commit object of type %s.", | |
name, typename(type)); | |
ret = run_gpg_verify(sha1, buf, size, flags); | |
free(buf); | |
return ret; | |
} | |
static int git_verify_commit_config(const char *var, const char *value, void *cb) | |
{ | |
int status = git_gpg_config(var, value, cb); | |
if (status) | |
return status; | |
return git_default_config(var, value, cb); | |
} | |
int cmd_verify_commit(int argc, const char **argv, const char *prefix) | |
{ | |
int i = 1, verbose = 0, had_error = 0; | |
unsigned flags = 0; | |
const struct option verify_commit_options[] = { | |
OPT__VERBOSE(&verbose, N_("print commit contents")), | |
OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), GPG_VERIFY_RAW), | |
OPT_END() | |
}; | |
git_config(git_verify_commit_config, NULL); | |
argc = parse_options(argc, argv, prefix, verify_commit_options, | |
verify_commit_usage, PARSE_OPT_KEEP_ARGV0); | |
if (argc <= i) | |
usage_with_options(verify_commit_usage, verify_commit_options); | |
if (verbose) | |
flags |= GPG_VERIFY_VERBOSE; | |
/* sometimes the program was terminated because this signal | |
* was received in the process of writing the gpg input: */ | |
signal(SIGPIPE, SIG_IGN); | |
while (i < argc) | |
if (verify_commit(argv[i++], flags)) | |
had_error = 1; | |
return had_error; | |
} |