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Commit | Line | Data |
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2636f614 | 1 | #include "cache.h" |
8f1d2e6f | 2 | #include "tag.h" |
0ab17950 NP |
3 | #include "commit.h" |
4 | #include "tree.h" | |
5 | #include "blob.h" | |
94240b91 | 6 | #include "gpg-interface.h" |
2636f614 DB |
7 | |
8 | const char *tag_type = "tag"; | |
9 | ||
45a227ef ST |
10 | static int run_gpg_verify(const char *buf, unsigned long size, unsigned flags) |
11 | { | |
12 | struct signature_check sigc; | |
13 | size_t payload_size; | |
14 | int ret; | |
15 | ||
16 | memset(&sigc, 0, sizeof(sigc)); | |
17 | ||
18 | payload_size = parse_signature(buf, size); | |
19 | ||
20 | if (size == payload_size) { | |
21 | if (flags & GPG_VERIFY_VERBOSE) | |
22 | write_in_full(1, buf, payload_size); | |
23 | return error("no signature found"); | |
24 | } | |
25 | ||
26 | ret = check_signature(buf, payload_size, buf + payload_size, | |
27 | size - payload_size, &sigc); | |
94240b91 LP |
28 | |
29 | if (!(flags & GPG_VERIFY_OMIT_STATUS)) | |
30 | print_signature_buffer(&sigc, flags); | |
45a227ef ST |
31 | |
32 | signature_check_clear(&sigc); | |
33 | return ret; | |
34 | } | |
35 | ||
36 | int gpg_verify_tag(const unsigned char *sha1, const char *name_to_report, | |
37 | unsigned flags) | |
38 | { | |
39 | enum object_type type; | |
40 | char *buf; | |
41 | unsigned long size; | |
42 | int ret; | |
43 | ||
44 | type = sha1_object_info(sha1, NULL); | |
45 | if (type != OBJ_TAG) | |
46 | return error("%s: cannot verify a non-tag object of type %s.", | |
47 | name_to_report ? | |
48 | name_to_report : | |
49 | find_unique_abbrev(sha1, DEFAULT_ABBREV), | |
50 | typename(type)); | |
51 | ||
52 | buf = read_sha1_file(sha1, &type, &size); | |
53 | if (!buf) | |
54 | return error("%s: unable to read file.", | |
55 | name_to_report ? | |
56 | name_to_report : | |
57 | find_unique_abbrev(sha1, DEFAULT_ABBREV)); | |
58 | ||
59 | ret = run_gpg_verify(buf, size, flags); | |
60 | ||
61 | free(buf); | |
62 | return ret; | |
63 | } | |
64 | ||
9534f40b | 65 | struct object *deref_tag(struct object *o, const char *warn, int warnlen) |
37fde874 | 66 | { |
1974632c | 67 | while (o && o->type == OBJ_TAG) |
24e8a3c9 | 68 | if (((struct tag *)o)->tagged) |
ed1c9977 | 69 | o = parse_object(((struct tag *)o)->tagged->oid.hash); |
24e8a3c9 MK |
70 | else |
71 | o = NULL; | |
9534f40b JH |
72 | if (!o && warn) { |
73 | if (!warnlen) | |
74 | warnlen = strlen(warn); | |
75 | error("missing object referenced by '%.*s'", warnlen, warn); | |
76 | } | |
37fde874 JH |
77 | return o; |
78 | } | |
79 | ||
90108a24 JK |
80 | struct object *deref_tag_noverify(struct object *o) |
81 | { | |
82 | while (o && o->type == OBJ_TAG) { | |
ed1c9977 | 83 | o = parse_object(o->oid.hash); |
90108a24 JK |
84 | if (o && o->type == OBJ_TAG && ((struct tag *)o)->tagged) |
85 | o = ((struct tag *)o)->tagged; | |
86 | else | |
87 | o = NULL; | |
88 | } | |
89 | return o; | |
90 | } | |
91 | ||
5d6ccf5c | 92 | struct tag *lookup_tag(const unsigned char *sha1) |
2636f614 | 93 | { |
100c5f3b LT |
94 | struct object *obj = lookup_object(sha1); |
95 | if (!obj) | |
d36f51c1 | 96 | return create_object(sha1, alloc_tag_node()); |
8ff226a9 | 97 | return object_as_type(obj, OBJ_TAG, 0); |
2636f614 DB |
98 | } |
99 | ||
e451d06b SP |
100 | static unsigned long parse_tag_date(const char *buf, const char *tail) |
101 | { | |
102 | const char *dateptr; | |
103 | ||
104 | while (buf < tail && *buf++ != '>') | |
105 | /* nada */; | |
106 | if (buf >= tail) | |
107 | return 0; | |
108 | dateptr = buf; | |
109 | while (buf < tail && *buf++ != '\n') | |
110 | /* nada */; | |
111 | if (buf >= tail) | |
112 | return 0; | |
113 | /* dateptr < buf && buf[-1] == '\n', so strtoul will stop at buf-1 */ | |
114 | return strtoul(dateptr, NULL, 10); | |
115 | } | |
116 | ||
cf7b1cad | 117 | int parse_tag_buffer(struct tag *item, const void *data, unsigned long size) |
2636f614 | 118 | { |
0ab17950 | 119 | unsigned char sha1[20]; |
89e4202f | 120 | char type[20]; |
28de5b6b SP |
121 | const char *bufptr = data; |
122 | const char *tail = bufptr + size; | |
123 | const char *nl; | |
ae200ee5 | 124 | |
2e0052a5 SP |
125 | if (item->object.parsed) |
126 | return 0; | |
127 | item->object.parsed = 1; | |
2636f614 | 128 | |
2636f614 | 129 | if (size < 64) |
bd2c39f5 | 130 | return -1; |
28de5b6b | 131 | if (memcmp("object ", bufptr, 7) || get_sha1_hex(bufptr + 7, sha1) || bufptr[47] != '\n') |
bd2c39f5 | 132 | return -1; |
28de5b6b | 133 | bufptr += 48; /* "object " + sha1 + "\n" */ |
2636f614 | 134 | |
59556548 | 135 | if (!starts_with(bufptr, "type ")) |
bd2c39f5 | 136 | return -1; |
28de5b6b SP |
137 | bufptr += 5; |
138 | nl = memchr(bufptr, '\n', tail - bufptr); | |
139 | if (!nl || sizeof(type) <= (nl - bufptr)) | |
bd2c39f5 | 140 | return -1; |
eddda371 | 141 | memcpy(type, bufptr, nl - bufptr); |
28de5b6b SP |
142 | type[nl - bufptr] = '\0'; |
143 | bufptr = nl + 1; | |
2636f614 | 144 | |
0ab17950 NP |
145 | if (!strcmp(type, blob_type)) { |
146 | item->tagged = &lookup_blob(sha1)->object; | |
147 | } else if (!strcmp(type, tree_type)) { | |
148 | item->tagged = &lookup_tree(sha1)->object; | |
149 | } else if (!strcmp(type, commit_type)) { | |
150 | item->tagged = &lookup_commit(sha1)->object; | |
151 | } else if (!strcmp(type, tag_type)) { | |
152 | item->tagged = &lookup_tag(sha1)->object; | |
153 | } else { | |
154 | error("Unknown type %s", type); | |
155 | item->tagged = NULL; | |
156 | } | |
157 | ||
59556548 | 158 | if (bufptr + 4 < tail && starts_with(bufptr, "tag ")) |
85594252 NTND |
159 | ; /* good */ |
160 | else | |
28de5b6b SP |
161 | return -1; |
162 | bufptr += 4; | |
163 | nl = memchr(bufptr, '\n', tail - bufptr); | |
164 | if (!nl) | |
165 | return -1; | |
166 | item->tag = xmemdupz(bufptr, nl - bufptr); | |
167 | bufptr = nl + 1; | |
168 | ||
59556548 | 169 | if (bufptr + 7 < tail && starts_with(bufptr, "tagger ")) |
e451d06b SP |
170 | item->date = parse_tag_date(bufptr, tail); |
171 | else | |
172 | item->date = 0; | |
173 | ||
2636f614 | 174 | return 0; |
bd2c39f5 | 175 | } |
13019d41 | 176 | |
bd2c39f5 NP |
177 | int parse_tag(struct tag *item) |
178 | { | |
21666f1a | 179 | enum object_type type; |
bd2c39f5 NP |
180 | void *data; |
181 | unsigned long size; | |
182 | int ret; | |
183 | ||
184 | if (item->object.parsed) | |
185 | return 0; | |
ed1c9977 | 186 | data = read_sha1_file(item->object.oid.hash, &type, &size); |
bd2c39f5 NP |
187 | if (!data) |
188 | return error("Could not read %s", | |
f2fd0760 | 189 | oid_to_hex(&item->object.oid)); |
21666f1a | 190 | if (type != OBJ_TAG) { |
bd2c39f5 NP |
191 | free(data); |
192 | return error("Object %s not a tag", | |
f2fd0760 | 193 | oid_to_hex(&item->object.oid)); |
bd2c39f5 NP |
194 | } |
195 | ret = parse_tag_buffer(item, data, size); | |
13019d41 | 196 | free(data); |
bd2c39f5 | 197 | return ret; |
2636f614 | 198 | } |