verify-commit: simplify parameters to run_gpg_verify()
[git/git.git] / builtin / verify-commit.c
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1/*
2 * Builtin "git commit-commit"
3 *
4 * Copyright (c) 2014 Michael J Gruber <git@drmicha.warpmail.net>
5 *
6 * Based on git-verify-tag
7 */
8#include "cache.h"
b2141fc1 9#include "config.h"
d07b00b7 10#include "builtin.h"
cbd53a21 11#include "object-store.h"
c1f5eb49 12#include "repository.h"
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13#include "commit.h"
14#include "run-command.h"
15#include <signal.h>
16#include "parse-options.h"
17#include "gpg-interface.h"
18
19static const char * const verify_commit_usage[] = {
9c9b4f2f 20 N_("git verify-commit [-v | --verbose] <commit>..."),
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21 NULL
22};
23
83730370 24static int run_gpg_verify(struct commit *commit, unsigned flags)
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25{
26 struct signature_check signature_check;
434060ec 27 int ret;
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28
29 memset(&signature_check, 0, sizeof(signature_check));
30
83730370 31 ret = check_commit_signature(commit, &signature_check);
aeff29dd 32 print_signature_buffer(&signature_check, flags);
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33
34 signature_check_clear(&signature_check);
434060ec 35 return ret;
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36}
37
aeff29dd 38static int verify_commit(const char *name, unsigned flags)
d07b00b7 39{
eee886cf 40 struct object_id oid;
83730370 41 struct object *obj;
d07b00b7 42
eee886cf 43 if (get_oid(name, &oid))
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44 return error("commit '%s' not found.", name);
45
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46 obj = parse_object(the_repository, &oid);
47 if (!obj)
d07b00b7 48 return error("%s: unable to read file.", name);
83730370 49 if (obj->type != OBJ_COMMIT)
d07b00b7 50 return error("%s: cannot verify a non-commit object of type %s.",
83730370 51 name, type_name(obj->type));
d07b00b7 52
83730370 53 return run_gpg_verify((struct commit *)obj, flags);
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54}
55
56static int git_verify_commit_config(const char *var, const char *value, void *cb)
57{
58 int status = git_gpg_config(var, value, cb);
59 if (status)
60 return status;
61 return git_default_config(var, value, cb);
62}
63
64int cmd_verify_commit(int argc, const char **argv, const char *prefix)
65{
66 int i = 1, verbose = 0, had_error = 0;
aeff29dd 67 unsigned flags = 0;
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68 const struct option verify_commit_options[] = {
69 OPT__VERBOSE(&verbose, N_("print commit contents")),
aeff29dd 70 OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), GPG_VERIFY_RAW),
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71 OPT_END()
72 };
73
74 git_config(git_verify_commit_config, NULL);
75
76 argc = parse_options(argc, argv, prefix, verify_commit_options,
77 verify_commit_usage, PARSE_OPT_KEEP_ARGV0);
78 if (argc <= i)
79 usage_with_options(verify_commit_usage, verify_commit_options);
80
aeff29dd 81 if (verbose)
82 flags |= GPG_VERIFY_VERBOSE;
83
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84 /* sometimes the program was terminated because this signal
85 * was received in the process of writing the gpg input: */
86 signal(SIGPIPE, SIG_IGN);
87 while (i < argc)
aeff29dd 88 if (verify_commit(argv[i++], flags))
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89 had_error = 1;
90 return had_error;
91}