]>
Commit | Line | Data |
---|---|---|
575f4974 | 1 | #include "cache.h" |
8a65ff76 | 2 | #include "refs.h" |
f3a3214e | 3 | #include "pkt-line.h" |
b1bf95bb | 4 | #include "run-command.h" |
11031d7e JS |
5 | #include "commit.h" |
6 | #include "object.h" | |
575f4974 | 7 | |
d0efc8a7 | 8 | static const char receive_pack_usage[] = "git-receive-pack <git-dir>"; |
575f4974 | 9 | |
9201c707 | 10 | static const char *unpacker[] = { "unpack-objects", NULL }; |
575f4974 | 11 | |
96f1e58f | 12 | static int report_status; |
cfee10a7 JH |
13 | |
14 | static char capabilities[] = "report-status"; | |
96f1e58f | 15 | static int capabilities_sent; |
cfee10a7 | 16 | |
8da19775 | 17 | static int show_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
575f4974 | 18 | { |
cfee10a7 JH |
19 | if (capabilities_sent) |
20 | packet_write(1, "%s %s\n", sha1_to_hex(sha1), path); | |
21 | else | |
22 | packet_write(1, "%s %s%c%s\n", | |
23 | sha1_to_hex(sha1), path, 0, capabilities); | |
24 | capabilities_sent = 1; | |
8a65ff76 | 25 | return 0; |
575f4974 LT |
26 | } |
27 | ||
8a65ff76 | 28 | static void write_head_info(void) |
575f4974 | 29 | { |
cb5d709f | 30 | for_each_ref(show_ref, NULL); |
cfee10a7 | 31 | if (!capabilities_sent) |
8da19775 | 32 | show_ref("capabilities^{}", null_sha1, 0, NULL); |
cfee10a7 | 33 | |
575f4974 LT |
34 | } |
35 | ||
eb1af2df LT |
36 | struct command { |
37 | struct command *next; | |
cfee10a7 | 38 | const char *error_string; |
eb1af2df LT |
39 | unsigned char old_sha1[20]; |
40 | unsigned char new_sha1[20]; | |
8f1d2e6f | 41 | char ref_name[FLEX_ARRAY]; /* more */ |
575f4974 LT |
42 | }; |
43 | ||
96f1e58f | 44 | static struct command *commands; |
575f4974 | 45 | |
b1bf95bb JW |
46 | static char update_hook[] = "hooks/update"; |
47 | ||
48 | static int run_update_hook(const char *refname, | |
49 | char *old_hex, char *new_hex) | |
50 | { | |
51 | int code; | |
52 | ||
53 | if (access(update_hook, X_OK) < 0) | |
54 | return 0; | |
55 | code = run_command(update_hook, refname, old_hex, new_hex, NULL); | |
56 | switch (code) { | |
57 | case 0: | |
58 | return 0; | |
59 | case -ERR_RUN_COMMAND_FORK: | |
cfee10a7 | 60 | return error("hook fork failed"); |
b1bf95bb | 61 | case -ERR_RUN_COMMAND_EXEC: |
cfee10a7 | 62 | return error("hook execute failed"); |
b1bf95bb | 63 | case -ERR_RUN_COMMAND_WAITPID: |
cfee10a7 | 64 | return error("waitpid failed"); |
b1bf95bb | 65 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: |
cfee10a7 | 66 | return error("waitpid is confused"); |
b1bf95bb | 67 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: |
bd2afde8 | 68 | return error("%s died of signal", update_hook); |
b1bf95bb | 69 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: |
cfee10a7 | 70 | return error("%s died strangely", update_hook); |
b1bf95bb JW |
71 | default: |
72 | error("%s exited with error code %d", update_hook, -code); | |
73 | return -code; | |
74 | } | |
75 | } | |
76 | ||
cfee10a7 | 77 | static int update(struct command *cmd) |
2eca23da | 78 | { |
cfee10a7 JH |
79 | const char *name = cmd->ref_name; |
80 | unsigned char *old_sha1 = cmd->old_sha1; | |
81 | unsigned char *new_sha1 = cmd->new_sha1; | |
3159c8dc JH |
82 | char new_hex[41], old_hex[41]; |
83 | struct ref_lock *lock; | |
2eca23da | 84 | |
cfee10a7 JH |
85 | cmd->error_string = NULL; |
86 | if (!strncmp(name, "refs/", 5) && check_ref_format(name + 5)) { | |
87 | cmd->error_string = "funny refname"; | |
d8a1deec JH |
88 | return error("refusing to create funny ref '%s' locally", |
89 | name); | |
cfee10a7 | 90 | } |
d8a1deec | 91 | |
2eca23da | 92 | strcpy(new_hex, sha1_to_hex(new_sha1)); |
3159c8dc | 93 | strcpy(old_hex, sha1_to_hex(old_sha1)); |
cfee10a7 JH |
94 | if (!has_sha1_file(new_sha1)) { |
95 | cmd->error_string = "bad pack"; | |
19614330 JH |
96 | return error("unpack should have generated %s, " |
97 | "but I can't find it!", new_hex); | |
cfee10a7 | 98 | } |
11031d7e JS |
99 | if (deny_non_fast_forwards && !is_null_sha1(old_sha1)) { |
100 | struct commit *old_commit, *new_commit; | |
9edd7e46 | 101 | struct commit_list *bases, *ent; |
11031d7e JS |
102 | |
103 | old_commit = (struct commit *)parse_object(old_sha1); | |
104 | new_commit = (struct commit *)parse_object(new_sha1); | |
9edd7e46 JS |
105 | bases = get_merge_bases(old_commit, new_commit, 1); |
106 | for (ent = bases; ent; ent = ent->next) | |
107 | if (!hashcmp(old_sha1, ent->item->object.sha1)) | |
11031d7e | 108 | break; |
9edd7e46 JS |
109 | free_commit_list(bases); |
110 | if (!ent) | |
11031d7e | 111 | return error("denying non-fast forward;" |
9edd7e46 | 112 | " you should pull first"); |
11031d7e | 113 | } |
b1bf95bb | 114 | if (run_update_hook(name, old_hex, new_hex)) { |
cfee10a7 | 115 | cmd->error_string = "hook declined"; |
bd2afde8 | 116 | return error("hook declined to update %s", name); |
b1bf95bb | 117 | } |
3159c8dc JH |
118 | |
119 | lock = lock_any_ref_for_update(name, old_sha1); | |
120 | if (!lock) { | |
121 | cmd->error_string = "failed to lock"; | |
122 | return error("failed to lock %s", name); | |
19614330 | 123 | } |
3159c8dc JH |
124 | write_ref_sha1(lock, new_sha1, "push"); |
125 | ||
126 | fprintf(stderr, "%s: %s -> %s\n", name, old_hex, new_hex); | |
127 | return 0; | |
2eca23da LT |
128 | } |
129 | ||
19614330 JH |
130 | static char update_post_hook[] = "hooks/post-update"; |
131 | ||
132 | static void run_update_post_hook(struct command *cmd) | |
133 | { | |
134 | struct command *cmd_p; | |
135 | int argc; | |
9201c707 | 136 | const char **argv; |
19614330 JH |
137 | |
138 | if (access(update_post_hook, X_OK) < 0) | |
139 | return; | |
140 | for (argc = 1, cmd_p = cmd; cmd_p; cmd_p = cmd_p->next) { | |
cfee10a7 | 141 | if (cmd_p->error_string) |
19614330 JH |
142 | continue; |
143 | argc++; | |
144 | } | |
145 | argv = xmalloc(sizeof(*argv) * (1 + argc)); | |
146 | argv[0] = update_post_hook; | |
147 | ||
148 | for (argc = 1, cmd_p = cmd; cmd_p; cmd_p = cmd_p->next) { | |
9201c707 | 149 | char *p; |
cfee10a7 | 150 | if (cmd_p->error_string) |
19614330 | 151 | continue; |
9201c707 JH |
152 | p = xmalloc(strlen(cmd_p->ref_name) + 1); |
153 | strcpy(p, cmd_p->ref_name); | |
154 | argv[argc] = p; | |
19614330 JH |
155 | argc++; |
156 | } | |
157 | argv[argc] = NULL; | |
128aed68 | 158 | run_command_v_opt(argc, argv, RUN_COMMAND_NO_STDIO); |
19614330 | 159 | } |
2eca23da | 160 | |
575f4974 LT |
161 | /* |
162 | * This gets called after(if) we've successfully | |
163 | * unpacked the data payload. | |
164 | */ | |
165 | static void execute_commands(void) | |
166 | { | |
eb1af2df LT |
167 | struct command *cmd = commands; |
168 | ||
169 | while (cmd) { | |
cfee10a7 | 170 | update(cmd); |
eb1af2df | 171 | cmd = cmd->next; |
575f4974 | 172 | } |
19614330 | 173 | run_update_post_hook(commands); |
575f4974 LT |
174 | } |
175 | ||
176 | static void read_head_info(void) | |
177 | { | |
eb1af2df | 178 | struct command **p = &commands; |
575f4974 LT |
179 | for (;;) { |
180 | static char line[1000]; | |
eb1af2df LT |
181 | unsigned char old_sha1[20], new_sha1[20]; |
182 | struct command *cmd; | |
cfee10a7 JH |
183 | char *refname; |
184 | int len, reflen; | |
eb1af2df LT |
185 | |
186 | len = packet_read_line(0, line, sizeof(line)); | |
575f4974 LT |
187 | if (!len) |
188 | break; | |
eb1af2df LT |
189 | if (line[len-1] == '\n') |
190 | line[--len] = 0; | |
191 | if (len < 83 || | |
192 | line[40] != ' ' || | |
193 | line[81] != ' ' || | |
194 | get_sha1_hex(line, old_sha1) || | |
195 | get_sha1_hex(line + 41, new_sha1)) | |
cfee10a7 JH |
196 | die("protocol error: expected old/new/ref, got '%s'", |
197 | line); | |
198 | ||
199 | refname = line + 82; | |
200 | reflen = strlen(refname); | |
201 | if (reflen + 82 < len) { | |
202 | if (strstr(refname + reflen + 1, "report-status")) | |
203 | report_status = 1; | |
204 | } | |
eb1af2df | 205 | cmd = xmalloc(sizeof(struct command) + len - 80); |
e702496e SP |
206 | hashcpy(cmd->old_sha1, old_sha1); |
207 | hashcpy(cmd->new_sha1, new_sha1); | |
eb1af2df | 208 | memcpy(cmd->ref_name, line + 82, len - 81); |
cfee10a7 | 209 | cmd->error_string = "n/a (unpacker error)"; |
eb1af2df LT |
210 | cmd->next = NULL; |
211 | *p = cmd; | |
212 | p = &cmd->next; | |
575f4974 LT |
213 | } |
214 | } | |
215 | ||
cfee10a7 | 216 | static const char *unpack(int *error_code) |
575f4974 | 217 | { |
77cb17e9 | 218 | int code = run_command_v_opt(1, unpacker, RUN_GIT_CMD); |
cfee10a7 JH |
219 | |
220 | *error_code = 0; | |
b1bf95bb JW |
221 | switch (code) { |
222 | case 0: | |
cfee10a7 | 223 | return NULL; |
b1bf95bb | 224 | case -ERR_RUN_COMMAND_FORK: |
cfee10a7 | 225 | return "unpack fork failed"; |
b1bf95bb | 226 | case -ERR_RUN_COMMAND_EXEC: |
cfee10a7 | 227 | return "unpack execute failed"; |
b1bf95bb | 228 | case -ERR_RUN_COMMAND_WAITPID: |
cfee10a7 | 229 | return "waitpid failed"; |
b1bf95bb | 230 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: |
cfee10a7 | 231 | return "waitpid is confused"; |
b1bf95bb | 232 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: |
cfee10a7 | 233 | return "unpacker died of signal"; |
b1bf95bb | 234 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: |
cfee10a7 | 235 | return "unpacker died strangely"; |
b1bf95bb | 236 | default: |
cfee10a7 JH |
237 | *error_code = -code; |
238 | return "unpacker exited with error code"; | |
239 | } | |
240 | } | |
241 | ||
242 | static void report(const char *unpack_status) | |
243 | { | |
244 | struct command *cmd; | |
245 | packet_write(1, "unpack %s\n", | |
246 | unpack_status ? unpack_status : "ok"); | |
247 | for (cmd = commands; cmd; cmd = cmd->next) { | |
248 | if (!cmd->error_string) | |
249 | packet_write(1, "ok %s\n", | |
250 | cmd->ref_name); | |
251 | else | |
252 | packet_write(1, "ng %s %s\n", | |
253 | cmd->ref_name, cmd->error_string); | |
575f4974 | 254 | } |
cfee10a7 | 255 | packet_flush(1); |
575f4974 LT |
256 | } |
257 | ||
258 | int main(int argc, char **argv) | |
259 | { | |
d0efc8a7 | 260 | int i; |
8d630132 | 261 | char *dir = NULL; |
575f4974 LT |
262 | |
263 | argv++; | |
264 | for (i = 1; i < argc; i++) { | |
8d630132 | 265 | char *arg = *argv++; |
575f4974 LT |
266 | |
267 | if (*arg == '-') { | |
575f4974 LT |
268 | /* Do flag handling here */ |
269 | usage(receive_pack_usage); | |
270 | } | |
d0efc8a7 LT |
271 | if (dir) |
272 | usage(receive_pack_usage); | |
575f4974 | 273 | dir = arg; |
575f4974 LT |
274 | } |
275 | if (!dir) | |
276 | usage(receive_pack_usage); | |
277 | ||
3159c8dc | 278 | if (!enter_repo(dir, 0)) |
8d630132 | 279 | die("'%s': unable to chdir or not a git archive", dir); |
575f4974 | 280 | |
94d8213f | 281 | setup_ident(); |
3159c8dc JH |
282 | git_config(git_default_config); |
283 | ||
8a65ff76 | 284 | write_head_info(); |
575f4974 LT |
285 | |
286 | /* EOF */ | |
f3a3214e | 287 | packet_flush(1); |
575f4974 LT |
288 | |
289 | read_head_info(); | |
7f8e9828 | 290 | if (commands) { |
cfee10a7 JH |
291 | int code; |
292 | const char *unpack_status = unpack(&code); | |
293 | if (!unpack_status) | |
294 | execute_commands(); | |
295 | if (report_status) | |
296 | report(unpack_status); | |
7f8e9828 | 297 | } |
575f4974 LT |
298 | return 0; |
299 | } |