Andrew's git - gitweb.git/blob - builtin/verify-commit.c

   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"
   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"
  17
  18static const char * const verify_commit_usage[] = {
  19                N_("git verify-commit [-v | --verbose] <commit>..."),
  20                NULL
  21};
  22
  23static int run_gpg_verify(struct commit *commit, unsigned flags)
  24{
  25        struct signature_check signature_check;
  26        int ret;
  27
  28        memset(&signature_check, 0, sizeof(signature_check));
  29
  30        ret = check_commit_signature(commit, &signature_check);
  31        print_signature_buffer(&signature_check, flags);
  32
  33        signature_check_clear(&signature_check);
  34        return ret;
  35}
  36
  37static int verify_commit(const char *name, unsigned flags)
  38{
  39        struct object_id oid;
  40        struct object *obj;
  41
  42        if (get_oid(name, &oid))
  43                return error("commit '%s' not found.", name);
  44
  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));
  51
  52        return run_gpg_verify((struct commit *)obj, flags);
  53}
  54
  55static int git_verify_commit_config(const char *var, const char *value, void *cb)
  56{
  57        int status = git_gpg_config(var, value, cb);
  58        if (status)
  59                return status;
  60        return git_default_config(var, value, cb);
  61}
  62
  63int cmd_verify_commit(int argc, const char **argv, const char *prefix)
  64{
  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()
  71        };
  72
  73        git_config(git_verify_commit_config, NULL);
  74
  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);
  79
  80        if (verbose)
  81                flags |= GPG_VERIFY_VERBOSE;
  82
  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;
  90}