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Commit | Line | Data |
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9b288516 DB |
1 | #include "cache.h" |
2 | #include "transport.h" | |
3 | #include "run-command.h" | |
c29727d5 DB |
4 | #include "http.h" |
5 | #include "pkt-line.h" | |
6 | #include "fetch-pack.h" | |
7 | #include "walker.h" | |
c7a8a162 | 8 | #include "bundle.h" |
c29727d5 DB |
9 | |
10 | /* Generic functions for using commit walkers */ | |
11 | ||
1788c39c | 12 | static int fetch_objs_via_walker(struct transport *transport, |
425b1393 | 13 | int nr_objs, struct ref **to_fetch) |
c29727d5 DB |
14 | { |
15 | char *dest = xstrdup(transport->url); | |
16 | struct walker *walker = transport->data; | |
425b1393 SP |
17 | char **objs = xmalloc(nr_objs * sizeof(*objs)); |
18 | int i; | |
c29727d5 DB |
19 | |
20 | walker->get_all = 1; | |
21 | walker->get_tree = 1; | |
22 | walker->get_history = 1; | |
23 | walker->get_verbosely = transport->verbose; | |
24 | walker->get_recover = 0; | |
25 | ||
425b1393 SP |
26 | for (i = 0; i < nr_objs; i++) |
27 | objs[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1)); | |
28 | ||
b6abb48a | 29 | if (walker_fetch(walker, nr_objs, objs, NULL, NULL)) |
c29727d5 DB |
30 | die("Fetch failed."); |
31 | ||
425b1393 SP |
32 | for (i = 0; i < nr_objs; i++) |
33 | free(objs[i]); | |
34 | free(objs); | |
c29727d5 DB |
35 | free(dest); |
36 | return 0; | |
37 | } | |
38 | ||
39 | static int disconnect_walker(struct transport *transport) | |
40 | { | |
41 | struct walker *walker = transport->data; | |
42 | if (walker) | |
43 | walker_free(walker); | |
44 | return 0; | |
45 | } | |
9b288516 | 46 | |
9b288516 DB |
47 | static int curl_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) { |
48 | const char **argv; | |
49 | int argc; | |
50 | int err; | |
51 | ||
52 | argv = xmalloc((refspec_nr + 11) * sizeof(char *)); | |
53 | argv[0] = "http-push"; | |
54 | argc = 1; | |
55 | if (flags & TRANSPORT_PUSH_ALL) | |
56 | argv[argc++] = "--all"; | |
57 | if (flags & TRANSPORT_PUSH_FORCE) | |
58 | argv[argc++] = "--force"; | |
59 | argv[argc++] = transport->url; | |
60 | while (refspec_nr--) | |
61 | argv[argc++] = *refspec++; | |
62 | argv[argc] = NULL; | |
63 | err = run_command_v_opt(argv, RUN_GIT_CMD); | |
64 | switch (err) { | |
65 | case -ERR_RUN_COMMAND_FORK: | |
66 | error("unable to fork for %s", argv[0]); | |
67 | case -ERR_RUN_COMMAND_EXEC: | |
68 | error("unable to exec %s", argv[0]); | |
69 | break; | |
70 | case -ERR_RUN_COMMAND_WAITPID: | |
71 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: | |
72 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: | |
73 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: | |
74 | error("%s died with strange error", argv[0]); | |
75 | } | |
76 | return !!err; | |
77 | } | |
78 | ||
c29727d5 DB |
79 | #ifndef NO_CURL |
80 | static int missing__target(int code, int result) | |
81 | { | |
82 | return /* file:// URL -- do we ever use one??? */ | |
83 | (result == CURLE_FILE_COULDNT_READ_FILE) || | |
84 | /* http:// and https:// URL */ | |
85 | (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) || | |
86 | /* ftp:// URL */ | |
87 | (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE) | |
88 | ; | |
89 | } | |
90 | ||
91 | #define missing_target(a) missing__target((a)->http_code, (a)->curl_result) | |
92 | ||
93 | static struct ref *get_refs_via_curl(const struct transport *transport) | |
94 | { | |
95 | struct buffer buffer; | |
96 | char *data, *start, *mid; | |
97 | char *ref_name; | |
98 | char *refs_url; | |
99 | int i = 0; | |
100 | ||
101 | struct active_request_slot *slot; | |
102 | struct slot_results results; | |
103 | ||
104 | struct ref *refs = NULL; | |
105 | struct ref *ref = NULL; | |
106 | struct ref *last_ref = NULL; | |
107 | ||
108 | data = xmalloc(4096); | |
109 | buffer.size = 4096; | |
110 | buffer.posn = 0; | |
111 | buffer.buffer = data; | |
112 | ||
113 | refs_url = xmalloc(strlen(transport->url) + 11); | |
114 | sprintf(refs_url, "%s/info/refs", transport->url); | |
115 | ||
116 | http_init(); | |
117 | ||
118 | slot = get_active_slot(); | |
119 | slot->results = &results; | |
120 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
121 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
122 | curl_easy_setopt(slot->curl, CURLOPT_URL, refs_url); | |
123 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
124 | if (start_active_slot(slot)) { | |
125 | run_active_slot(slot); | |
126 | if (results.curl_result != CURLE_OK) { | |
127 | if (missing_target(&results)) { | |
128 | free(buffer.buffer); | |
129 | return NULL; | |
130 | } else { | |
131 | free(buffer.buffer); | |
132 | error("%s", curl_errorstr); | |
133 | return NULL; | |
134 | } | |
135 | } | |
136 | } else { | |
137 | free(buffer.buffer); | |
138 | error("Unable to start request"); | |
139 | return NULL; | |
140 | } | |
141 | ||
142 | http_cleanup(); | |
143 | ||
144 | data = buffer.buffer; | |
145 | start = NULL; | |
146 | mid = data; | |
147 | while (i < buffer.posn) { | |
148 | if (!start) | |
149 | start = &data[i]; | |
150 | if (data[i] == '\t') | |
151 | mid = &data[i]; | |
152 | if (data[i] == '\n') { | |
153 | data[i] = 0; | |
154 | ref_name = mid + 1; | |
155 | ref = xmalloc(sizeof(struct ref) + | |
156 | strlen(ref_name) + 1); | |
157 | memset(ref, 0, sizeof(struct ref)); | |
158 | strcpy(ref->name, ref_name); | |
159 | get_sha1_hex(start, ref->old_sha1); | |
160 | if (!refs) | |
161 | refs = ref; | |
162 | if (last_ref) | |
163 | last_ref->next = ref; | |
164 | last_ref = ref; | |
165 | start = NULL; | |
166 | } | |
167 | i++; | |
168 | } | |
169 | ||
170 | free(buffer.buffer); | |
171 | ||
172 | return refs; | |
173 | } | |
174 | ||
e5f4e214 SP |
175 | static int fetch_objs_via_curl(struct transport *transport, |
176 | int nr_objs, struct ref **to_fetch) | |
177 | { | |
178 | if (!transport->data) | |
179 | transport->data = get_http_walker(transport->url); | |
180 | return fetch_objs_via_walker(transport, nr_objs, to_fetch); | |
181 | } | |
182 | ||
c29727d5 DB |
183 | #else |
184 | ||
185 | static struct ref *get_refs_via_curl(const struct transport *transport) | |
186 | { | |
187 | die("Cannot fetch from '%s' without curl ...", transport->url); | |
188 | return NULL; | |
189 | } | |
190 | ||
e5f4e214 SP |
191 | static int fetch_objs_via_curl(struct transport *transport, |
192 | int nr_objs, struct ref **to_fetch) | |
193 | { | |
194 | die("Cannot fetch from '%s' without curl ...", transport->url); | |
195 | return -1; | |
196 | } | |
197 | ||
c29727d5 DB |
198 | #endif |
199 | ||
c7a8a162 JS |
200 | struct bundle_transport_data { |
201 | int fd; | |
202 | struct bundle_header header; | |
203 | }; | |
204 | ||
205 | static struct ref *get_refs_from_bundle(const struct transport *transport) | |
206 | { | |
207 | struct bundle_transport_data *data = transport->data; | |
208 | struct ref *result = NULL; | |
209 | int i; | |
210 | ||
211 | if (data->fd > 0) | |
212 | close(data->fd); | |
213 | data->fd = read_bundle_header(transport->url, &data->header); | |
214 | if (data->fd < 0) | |
215 | die ("Could not read bundle '%s'.", transport->url); | |
216 | for (i = 0; i < data->header.references.nr; i++) { | |
217 | struct ref_list_entry *e = data->header.references.list + i; | |
218 | struct ref *ref = alloc_ref(strlen(e->name)); | |
219 | hashcpy(ref->old_sha1, e->sha1); | |
220 | strcpy(ref->name, e->name); | |
221 | ref->next = result; | |
222 | result = ref; | |
223 | } | |
224 | return result; | |
225 | } | |
226 | ||
1788c39c | 227 | static int fetch_refs_from_bundle(struct transport *transport, |
425b1393 | 228 | int nr_heads, struct ref **to_fetch) |
c7a8a162 JS |
229 | { |
230 | struct bundle_transport_data *data = transport->data; | |
231 | return unbundle(&data->header, data->fd); | |
232 | } | |
233 | ||
234 | static int close_bundle(struct transport *transport) | |
235 | { | |
236 | struct bundle_transport_data *data = transport->data; | |
237 | if (data->fd > 0) | |
238 | close(data->fd); | |
239 | return 0; | |
240 | } | |
241 | ||
9b288516 DB |
242 | struct git_transport_data { |
243 | unsigned thin : 1; | |
c29727d5 DB |
244 | unsigned keep : 1; |
245 | ||
246 | int unpacklimit; | |
9b288516 | 247 | |
c29727d5 DB |
248 | int depth; |
249 | ||
250 | const char *uploadpack; | |
9b288516 DB |
251 | const char *receivepack; |
252 | }; | |
253 | ||
254 | static int set_git_option(struct transport *connection, | |
255 | const char *name, const char *value) | |
256 | { | |
257 | struct git_transport_data *data = connection->data; | |
c29727d5 DB |
258 | if (!strcmp(name, TRANS_OPT_UPLOADPACK)) { |
259 | data->uploadpack = value; | |
260 | return 0; | |
261 | } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) { | |
9b288516 DB |
262 | data->receivepack = value; |
263 | return 0; | |
264 | } else if (!strcmp(name, TRANS_OPT_THIN)) { | |
265 | data->thin = !!value; | |
266 | return 0; | |
c29727d5 DB |
267 | } else if (!strcmp(name, TRANS_OPT_KEEP)) { |
268 | data->keep = !!value; | |
269 | return 0; | |
270 | } else if (!strcmp(name, TRANS_OPT_UNPACKLIMIT)) { | |
271 | data->unpacklimit = atoi(value); | |
272 | return 0; | |
273 | } else if (!strcmp(name, TRANS_OPT_DEPTH)) { | |
274 | if (!value) | |
275 | data->depth = 0; | |
276 | else | |
277 | data->depth = atoi(value); | |
278 | return 0; | |
9b288516 DB |
279 | } |
280 | return 1; | |
281 | } | |
282 | ||
c29727d5 DB |
283 | static struct ref *get_refs_via_connect(const struct transport *transport) |
284 | { | |
285 | struct git_transport_data *data = transport->data; | |
286 | struct ref *refs; | |
287 | int fd[2]; | |
288 | pid_t pid; | |
289 | char *dest = xstrdup(transport->url); | |
290 | ||
291 | pid = git_connect(fd, dest, data->uploadpack, 0); | |
292 | ||
293 | if (pid < 0) | |
294 | die("Failed to connect to \"%s\"", transport->url); | |
295 | ||
296 | get_remote_heads(fd[0], &refs, 0, NULL, 0); | |
297 | packet_flush(fd[1]); | |
298 | ||
299 | finish_connect(pid); | |
300 | ||
301 | free(dest); | |
302 | ||
303 | return refs; | |
304 | } | |
305 | ||
1788c39c | 306 | static int fetch_refs_via_pack(struct transport *transport, |
425b1393 | 307 | int nr_heads, struct ref **to_fetch) |
c29727d5 DB |
308 | { |
309 | struct git_transport_data *data = transport->data; | |
425b1393 | 310 | char **heads = xmalloc(nr_heads * sizeof(*heads)); |
e4cd6c7a | 311 | char **origh = xmalloc(nr_heads * sizeof(*origh)); |
c29727d5 DB |
312 | struct ref *refs; |
313 | char *dest = xstrdup(transport->url); | |
314 | struct fetch_pack_args args; | |
425b1393 | 315 | int i; |
c29727d5 DB |
316 | |
317 | args.uploadpack = data->uploadpack; | |
318 | args.quiet = 0; | |
319 | args.keep_pack = data->keep; | |
320 | args.unpacklimit = data->unpacklimit; | |
321 | args.use_thin_pack = data->thin; | |
322 | args.fetch_all = 0; | |
323 | args.verbose = transport->verbose; | |
324 | args.depth = data->depth; | |
325 | args.no_progress = 0; | |
326 | ||
327 | setup_fetch_pack(&args); | |
328 | ||
425b1393 | 329 | for (i = 0; i < nr_heads; i++) |
e4cd6c7a | 330 | origh[i] = heads[i] = xstrdup(to_fetch[i]->name); |
1788c39c | 331 | refs = fetch_pack(dest, nr_heads, heads, &transport->pack_lockfile); |
c29727d5 | 332 | |
425b1393 | 333 | for (i = 0; i < nr_heads; i++) |
e4cd6c7a SP |
334 | free(origh[i]); |
335 | free(origh); | |
336 | free(heads); | |
c29727d5 | 337 | free_refs(refs); |
c29727d5 DB |
338 | free(dest); |
339 | return 0; | |
340 | } | |
341 | ||
9b288516 DB |
342 | static int git_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) { |
343 | struct git_transport_data *data = transport->data; | |
344 | const char **argv; | |
345 | char *rem; | |
346 | int argc; | |
347 | int err; | |
348 | ||
349 | argv = xmalloc((refspec_nr + 11) * sizeof(char *)); | |
350 | argv[0] = "send-pack"; | |
351 | argc = 1; | |
352 | if (flags & TRANSPORT_PUSH_ALL) | |
353 | argv[argc++] = "--all"; | |
354 | if (flags & TRANSPORT_PUSH_FORCE) | |
355 | argv[argc++] = "--force"; | |
356 | if (data->receivepack) { | |
357 | char *rp = xmalloc(strlen(data->receivepack) + 16); | |
358 | sprintf(rp, "--receive-pack=%s", data->receivepack); | |
359 | argv[argc++] = rp; | |
360 | } | |
361 | if (data->thin) | |
362 | argv[argc++] = "--thin"; | |
363 | rem = xmalloc(strlen(transport->remote->name) + 10); | |
364 | sprintf(rem, "--remote=%s", transport->remote->name); | |
365 | argv[argc++] = rem; | |
366 | argv[argc++] = transport->url; | |
367 | while (refspec_nr--) | |
368 | argv[argc++] = *refspec++; | |
369 | argv[argc] = NULL; | |
370 | err = run_command_v_opt(argv, RUN_GIT_CMD); | |
371 | switch (err) { | |
372 | case -ERR_RUN_COMMAND_FORK: | |
373 | error("unable to fork for %s", argv[0]); | |
374 | case -ERR_RUN_COMMAND_EXEC: | |
375 | error("unable to exec %s", argv[0]); | |
376 | break; | |
377 | case -ERR_RUN_COMMAND_WAITPID: | |
378 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: | |
379 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: | |
380 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: | |
381 | error("%s died with strange error", argv[0]); | |
382 | } | |
383 | return !!err; | |
384 | } | |
385 | ||
9b288516 DB |
386 | static int is_local(const char *url) |
387 | { | |
388 | const char *colon = strchr(url, ':'); | |
389 | const char *slash = strchr(url, '/'); | |
390 | return !colon || (slash && slash < colon); | |
391 | } | |
392 | ||
393 | static int is_file(const char *url) | |
394 | { | |
395 | struct stat buf; | |
396 | if (stat(url, &buf)) | |
397 | return 0; | |
398 | return S_ISREG(buf.st_mode); | |
399 | } | |
400 | ||
e5f4e214 | 401 | struct transport *transport_get(struct remote *remote, const char *url) |
9b288516 | 402 | { |
8eb554ae SP |
403 | struct transport *ret = xcalloc(1, sizeof(*ret)); |
404 | ||
405 | ret->remote = remote; | |
406 | ret->url = url; | |
8eb554ae | 407 | |
9b288516 | 408 | if (!prefixcmp(url, "rsync://")) { |
824d5776 SP |
409 | /* not supported; don't populate any ops */ |
410 | ||
8eb554ae SP |
411 | } else if (!prefixcmp(url, "http://") |
412 | || !prefixcmp(url, "https://") | |
413 | || !prefixcmp(url, "ftp://")) { | |
824d5776 SP |
414 | ret->get_refs_list = get_refs_via_curl; |
415 | ret->fetch = fetch_objs_via_curl; | |
416 | ret->push = curl_transport_push; | |
417 | ret->disconnect = disconnect_walker; | |
418 | ||
9b288516 | 419 | } else if (is_local(url) && is_file(url)) { |
c7a8a162 | 420 | struct bundle_transport_data *data = xcalloc(1, sizeof(*data)); |
c7a8a162 | 421 | ret->data = data; |
824d5776 SP |
422 | ret->get_refs_list = get_refs_from_bundle; |
423 | ret->fetch = fetch_refs_from_bundle; | |
424 | ret->disconnect = close_bundle; | |
425 | ||
9b288516 DB |
426 | } else { |
427 | struct git_transport_data *data = xcalloc(1, sizeof(*data)); | |
9b288516 | 428 | ret->data = data; |
824d5776 SP |
429 | ret->set_option = set_git_option; |
430 | ret->get_refs_list = get_refs_via_connect; | |
431 | ret->fetch = fetch_refs_via_pack; | |
432 | ret->push = git_transport_push; | |
433 | ||
9b288516 | 434 | data->thin = 1; |
c29727d5 DB |
435 | data->uploadpack = "git-upload-pack"; |
436 | if (remote && remote->uploadpack) | |
437 | data->uploadpack = remote->uploadpack; | |
9b288516 DB |
438 | data->receivepack = "git-receive-pack"; |
439 | if (remote && remote->receivepack) | |
440 | data->receivepack = remote->receivepack; | |
c29727d5 | 441 | data->unpacklimit = -1; |
9b288516 | 442 | } |
8eb554ae | 443 | |
9b288516 DB |
444 | return ret; |
445 | } | |
446 | ||
447 | int transport_set_option(struct transport *transport, | |
448 | const char *name, const char *value) | |
449 | { | |
824d5776 SP |
450 | if (transport->set_option) |
451 | return transport->set_option(transport, name, value); | |
ab865e6e | 452 | return 1; |
9b288516 DB |
453 | } |
454 | ||
455 | int transport_push(struct transport *transport, | |
456 | int refspec_nr, const char **refspec, int flags) | |
457 | { | |
824d5776 | 458 | if (!transport->push) |
9b288516 | 459 | return 1; |
824d5776 | 460 | return transport->push(transport, refspec_nr, refspec, flags); |
9b288516 DB |
461 | } |
462 | ||
c29727d5 DB |
463 | struct ref *transport_get_remote_refs(struct transport *transport) |
464 | { | |
465 | if (!transport->remote_refs) | |
824d5776 | 466 | transport->remote_refs = transport->get_refs_list(transport); |
c29727d5 DB |
467 | return transport->remote_refs; |
468 | } | |
469 | ||
c29727d5 DB |
470 | int transport_fetch_refs(struct transport *transport, struct ref *refs) |
471 | { | |
425b1393 | 472 | int rc; |
7a2bff45 | 473 | int nr_heads = 0, nr_alloc = 0; |
425b1393 | 474 | struct ref **heads = NULL; |
c29727d5 | 475 | struct ref *rm; |
c29727d5 DB |
476 | |
477 | for (rm = refs; rm; rm = rm->next) { | |
478 | if (rm->peer_ref && | |
479 | !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1)) | |
480 | continue; | |
7a2bff45 | 481 | ALLOC_GROW(heads, nr_heads + 1, nr_alloc); |
425b1393 | 482 | heads[nr_heads++] = rm; |
c29727d5 DB |
483 | } |
484 | ||
824d5776 | 485 | rc = transport->fetch(transport, nr_heads, heads); |
c29727d5 | 486 | free(heads); |
425b1393 | 487 | return rc; |
c29727d5 DB |
488 | } |
489 | ||
1788c39c SP |
490 | void transport_unlock_pack(struct transport *transport) |
491 | { | |
492 | if (transport->pack_lockfile) { | |
493 | unlink(transport->pack_lockfile); | |
494 | free(transport->pack_lockfile); | |
495 | transport->pack_lockfile = NULL; | |
496 | } | |
497 | } | |
498 | ||
9b288516 DB |
499 | int transport_disconnect(struct transport *transport) |
500 | { | |
501 | int ret = 0; | |
824d5776 SP |
502 | if (transport->disconnect) |
503 | ret = transport->disconnect(transport); | |
9b288516 DB |
504 | free(transport); |
505 | return ret; | |
506 | } |