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2ae68fcb CR |
1 | /* |
2 | * Builtin "git verify-tag" | |
3 | * | |
4 | * Copyright (c) 2007 Carlos Rica <jasampler@gmail.com> | |
5 | * | |
6 | * Based on git-verify-tag.sh | |
7 | */ | |
8 | #include "cache.h" | |
9 | #include "builtin.h" | |
10 | #include "tag.h" | |
11 | #include "run-command.h" | |
12 | #include <signal.h> | |
4855b2a2 | 13 | #include "parse-options.h" |
2f47eae2 | 14 | #include "gpg-interface.h" |
2ae68fcb | 15 | |
4855b2a2 | 16 | static const char * const verify_tag_usage[] = { |
9c9b4f2f | 17 | N_("git verify-tag [-v | --verbose] <tag>..."), |
4855b2a2 SB |
18 | NULL |
19 | }; | |
2ae68fcb | 20 | |
e18443ec | 21 | static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags) |
2ae68fcb | 22 | { |
a4cc18f2 | 23 | struct signature_check sigc; |
2f47eae2 | 24 | int len; |
434060ec | 25 | int ret; |
2ae68fcb | 26 | |
a4cc18f2 | 27 | memset(&sigc, 0, sizeof(sigc)); |
28 | ||
ac58c4c7 | 29 | len = parse_signature(buf, size); |
2ae68fcb | 30 | |
ca194d50 | 31 | if (size == len) { |
e18443ec | 32 | if (flags & GPG_VERIFY_VERBOSE) |
ca194d50 | 33 | write_in_full(1, buf, len); |
2f47eae2 | 34 | return error("no signature found"); |
ca194d50 | 35 | } |
2ae68fcb | 36 | |
434060ec | 37 | ret = check_signature(buf, len, buf + len, size - len, &sigc); |
e18443ec | 38 | print_signature_buffer(&sigc, flags); |
a4cc18f2 | 39 | |
40 | signature_check_clear(&sigc); | |
434060ec | 41 | return ret; |
2ae68fcb CR |
42 | } |
43 | ||
e18443ec | 44 | static int verify_tag(const char *name, unsigned flags) |
2ae68fcb CR |
45 | { |
46 | enum object_type type; | |
47 | unsigned char sha1[20]; | |
48 | char *buf; | |
49 | unsigned long size; | |
50 | int ret; | |
51 | ||
52 | if (get_sha1(name, sha1)) | |
53 | return error("tag '%s' not found.", name); | |
54 | ||
55 | type = sha1_object_info(sha1, NULL); | |
56 | if (type != OBJ_TAG) | |
57 | return error("%s: cannot verify a non-tag object of type %s.", | |
58 | name, typename(type)); | |
59 | ||
60 | buf = read_sha1_file(sha1, &type, &size); | |
61 | if (!buf) | |
62 | return error("%s: unable to read file.", name); | |
63 | ||
e18443ec | 64 | ret = run_gpg_verify(buf, size, flags); |
2ae68fcb CR |
65 | |
66 | free(buf); | |
67 | return ret; | |
68 | } | |
69 | ||
a2c25061 AZ |
70 | static int git_verify_tag_config(const char *var, const char *value, void *cb) |
71 | { | |
72 | int status = git_gpg_config(var, value, cb); | |
73 | if (status) | |
74 | return status; | |
75 | return git_default_config(var, value, cb); | |
76 | } | |
77 | ||
2ae68fcb CR |
78 | int cmd_verify_tag(int argc, const char **argv, const char *prefix) |
79 | { | |
80 | int i = 1, verbose = 0, had_error = 0; | |
e18443ec | 81 | unsigned flags = 0; |
4855b2a2 | 82 | const struct option verify_tag_options[] = { |
f6008eb2 | 83 | OPT__VERBOSE(&verbose, N_("print tag contents")), |
e18443ec | 84 | OPT_BIT(0, "raw", &flags, N_("print raw gpg status output"), GPG_VERIFY_RAW), |
4855b2a2 SB |
85 | OPT_END() |
86 | }; | |
2ae68fcb | 87 | |
a2c25061 | 88 | git_config(git_verify_tag_config, NULL); |
2ae68fcb | 89 | |
4855b2a2 SB |
90 | argc = parse_options(argc, argv, prefix, verify_tag_options, |
91 | verify_tag_usage, PARSE_OPT_KEEP_ARGV0); | |
d2761895 | 92 | if (argc <= i) |
4855b2a2 | 93 | usage_with_options(verify_tag_usage, verify_tag_options); |
d2761895 | 94 | |
e18443ec | 95 | if (verbose) |
96 | flags |= GPG_VERIFY_VERBOSE; | |
97 | ||
2ae68fcb | 98 | while (i < argc) |
e18443ec | 99 | if (verify_tag(argv[i++], flags)) |
2ae68fcb CR |
100 | had_error = 1; |
101 | return had_error; | |
102 | } |