The eighth batch
[git.git] / builtin / verify-commit.c
blob40c69a0bedde5be02af557fd0c92efc1d2c857e5
1 /*
2 * Builtin "git commit-commit"
4 * Copyright (c) 2014 Michael J Gruber <git@drmicha.warpmail.net>
6 * Based on git-verify-tag
7 */
8 #include "cache.h"
9 #include "config.h"
10 #include "builtin.h"
11 #include "object-store.h"
12 #include "repository.h"
13 #include "commit.h"
14 #include "run-command.h"
15 #include "parse-options.h"
16 #include "gpg-interface.h"
18 static const char * const verify_commit_usage[] = {
19 N_("git verify-commit [-v | --verbose] <commit>..."),
20 NULL
23 static int run_gpg_verify(struct commit *commit, unsigned flags)
25 struct signature_check signature_check;
26 int ret;
28 memset(&signature_check, 0, sizeof(signature_check));
30 ret = check_commit_signature(commit, &signature_check);
31 print_signature_buffer(&signature_check, flags);
33 signature_check_clear(&signature_check);
34 return ret;
37 static int verify_commit(const char *name, unsigned flags)
39 struct object_id oid;
40 struct object *obj;
42 if (get_oid(name, &oid))
43 return error("commit '%s' not found.", name);
45 obj = parse_object(the_repository, &oid);
46 if (!obj)
47 return error("%s: unable to read file.", name);
48 if (obj->type != OBJ_COMMIT)
49 return error("%s: cannot verify a non-commit object of type %s.",
50 name, type_name(obj->type));
52 return run_gpg_verify((struct commit *)obj, flags);
55 static int git_verify_commit_config(const char *var, const char *value, void *cb)
57 int status = git_gpg_config(var, value, cb);
58 if (status)
59 return status;
60 return git_default_config(var, value, cb);
63 int cmd_verify_commit(int argc, const char **argv, const char *prefix)
65 int i = 1, verbose = 0, had_error = 0;
66 unsigned flags = 0;
67 const struct option verify_commit_options[] = {
68 OPT__VERBOSE(&verbose, N_("print commit contents")),
69 OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), GPG_VERIFY_RAW),
70 OPT_END()
73 git_config(git_verify_commit_config, NULL);
75 argc = parse_options(argc, argv, prefix, verify_commit_options,
76 verify_commit_usage, PARSE_OPT_KEEP_ARGV0);
77 if (argc <= i)
78 usage_with_options(verify_commit_usage, verify_commit_options);
80 if (verbose)
81 flags |= GPG_VERIFY_VERBOSE;
83 /* sometimes the program was terminated because this signal
84 * was received in the process of writing the gpg input: */
85 signal(SIGPIPE, SIG_IGN);
86 while (i < argc)
87 if (verify_commit(argv[i++], flags))
88 had_error = 1;
89 return had_error;