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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 DB |
46 | |
47 | static const struct transport_ops rsync_transport; | |
48 | ||
49 | static int curl_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) { | |
50 | const char **argv; | |
51 | int argc; | |
52 | int err; | |
53 | ||
54 | argv = xmalloc((refspec_nr + 11) * sizeof(char *)); | |
55 | argv[0] = "http-push"; | |
56 | argc = 1; | |
57 | if (flags & TRANSPORT_PUSH_ALL) | |
58 | argv[argc++] = "--all"; | |
59 | if (flags & TRANSPORT_PUSH_FORCE) | |
60 | argv[argc++] = "--force"; | |
61 | argv[argc++] = transport->url; | |
62 | while (refspec_nr--) | |
63 | argv[argc++] = *refspec++; | |
64 | argv[argc] = NULL; | |
65 | err = run_command_v_opt(argv, RUN_GIT_CMD); | |
66 | switch (err) { | |
67 | case -ERR_RUN_COMMAND_FORK: | |
68 | error("unable to fork for %s", argv[0]); | |
69 | case -ERR_RUN_COMMAND_EXEC: | |
70 | error("unable to exec %s", argv[0]); | |
71 | break; | |
72 | case -ERR_RUN_COMMAND_WAITPID: | |
73 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: | |
74 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: | |
75 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: | |
76 | error("%s died with strange error", argv[0]); | |
77 | } | |
78 | return !!err; | |
79 | } | |
80 | ||
c29727d5 DB |
81 | #ifndef NO_CURL |
82 | static int missing__target(int code, int result) | |
83 | { | |
84 | return /* file:// URL -- do we ever use one??? */ | |
85 | (result == CURLE_FILE_COULDNT_READ_FILE) || | |
86 | /* http:// and https:// URL */ | |
87 | (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) || | |
88 | /* ftp:// URL */ | |
89 | (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE) | |
90 | ; | |
91 | } | |
92 | ||
93 | #define missing_target(a) missing__target((a)->http_code, (a)->curl_result) | |
94 | ||
95 | static struct ref *get_refs_via_curl(const struct transport *transport) | |
96 | { | |
97 | struct buffer buffer; | |
98 | char *data, *start, *mid; | |
99 | char *ref_name; | |
100 | char *refs_url; | |
101 | int i = 0; | |
102 | ||
103 | struct active_request_slot *slot; | |
104 | struct slot_results results; | |
105 | ||
106 | struct ref *refs = NULL; | |
107 | struct ref *ref = NULL; | |
108 | struct ref *last_ref = NULL; | |
109 | ||
110 | data = xmalloc(4096); | |
111 | buffer.size = 4096; | |
112 | buffer.posn = 0; | |
113 | buffer.buffer = data; | |
114 | ||
115 | refs_url = xmalloc(strlen(transport->url) + 11); | |
116 | sprintf(refs_url, "%s/info/refs", transport->url); | |
117 | ||
118 | http_init(); | |
119 | ||
120 | slot = get_active_slot(); | |
121 | slot->results = &results; | |
122 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer); | |
123 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
124 | curl_easy_setopt(slot->curl, CURLOPT_URL, refs_url); | |
125 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); | |
126 | if (start_active_slot(slot)) { | |
127 | run_active_slot(slot); | |
128 | if (results.curl_result != CURLE_OK) { | |
129 | if (missing_target(&results)) { | |
130 | free(buffer.buffer); | |
131 | return NULL; | |
132 | } else { | |
133 | free(buffer.buffer); | |
134 | error("%s", curl_errorstr); | |
135 | return NULL; | |
136 | } | |
137 | } | |
138 | } else { | |
139 | free(buffer.buffer); | |
140 | error("Unable to start request"); | |
141 | return NULL; | |
142 | } | |
143 | ||
144 | http_cleanup(); | |
145 | ||
146 | data = buffer.buffer; | |
147 | start = NULL; | |
148 | mid = data; | |
149 | while (i < buffer.posn) { | |
150 | if (!start) | |
151 | start = &data[i]; | |
152 | if (data[i] == '\t') | |
153 | mid = &data[i]; | |
154 | if (data[i] == '\n') { | |
155 | data[i] = 0; | |
156 | ref_name = mid + 1; | |
157 | ref = xmalloc(sizeof(struct ref) + | |
158 | strlen(ref_name) + 1); | |
159 | memset(ref, 0, sizeof(struct ref)); | |
160 | strcpy(ref->name, ref_name); | |
161 | get_sha1_hex(start, ref->old_sha1); | |
162 | if (!refs) | |
163 | refs = ref; | |
164 | if (last_ref) | |
165 | last_ref->next = ref; | |
166 | last_ref = ref; | |
167 | start = NULL; | |
168 | } | |
169 | i++; | |
170 | } | |
171 | ||
172 | free(buffer.buffer); | |
173 | ||
174 | return refs; | |
175 | } | |
176 | ||
e5f4e214 SP |
177 | static int fetch_objs_via_curl(struct transport *transport, |
178 | int nr_objs, struct ref **to_fetch) | |
179 | { | |
180 | if (!transport->data) | |
181 | transport->data = get_http_walker(transport->url); | |
182 | return fetch_objs_via_walker(transport, nr_objs, to_fetch); | |
183 | } | |
184 | ||
c29727d5 DB |
185 | #else |
186 | ||
187 | static struct ref *get_refs_via_curl(const struct transport *transport) | |
188 | { | |
189 | die("Cannot fetch from '%s' without curl ...", transport->url); | |
190 | return NULL; | |
191 | } | |
192 | ||
e5f4e214 SP |
193 | static int fetch_objs_via_curl(struct transport *transport, |
194 | int nr_objs, struct ref **to_fetch) | |
195 | { | |
196 | die("Cannot fetch from '%s' without curl ...", transport->url); | |
197 | return -1; | |
198 | } | |
199 | ||
c29727d5 DB |
200 | #endif |
201 | ||
9b288516 DB |
202 | static const struct transport_ops curl_transport = { |
203 | /* set_option */ NULL, | |
c29727d5 | 204 | /* get_refs_list */ get_refs_via_curl, |
e5f4e214 | 205 | /* fetch */ fetch_objs_via_curl, |
c29727d5 DB |
206 | /* push */ curl_transport_push, |
207 | /* disconnect */ disconnect_walker | |
9b288516 DB |
208 | }; |
209 | ||
c7a8a162 JS |
210 | struct bundle_transport_data { |
211 | int fd; | |
212 | struct bundle_header header; | |
213 | }; | |
214 | ||
215 | static struct ref *get_refs_from_bundle(const struct transport *transport) | |
216 | { | |
217 | struct bundle_transport_data *data = transport->data; | |
218 | struct ref *result = NULL; | |
219 | int i; | |
220 | ||
221 | if (data->fd > 0) | |
222 | close(data->fd); | |
223 | data->fd = read_bundle_header(transport->url, &data->header); | |
224 | if (data->fd < 0) | |
225 | die ("Could not read bundle '%s'.", transport->url); | |
226 | for (i = 0; i < data->header.references.nr; i++) { | |
227 | struct ref_list_entry *e = data->header.references.list + i; | |
228 | struct ref *ref = alloc_ref(strlen(e->name)); | |
229 | hashcpy(ref->old_sha1, e->sha1); | |
230 | strcpy(ref->name, e->name); | |
231 | ref->next = result; | |
232 | result = ref; | |
233 | } | |
234 | return result; | |
235 | } | |
236 | ||
1788c39c | 237 | static int fetch_refs_from_bundle(struct transport *transport, |
425b1393 | 238 | int nr_heads, struct ref **to_fetch) |
c7a8a162 JS |
239 | { |
240 | struct bundle_transport_data *data = transport->data; | |
241 | return unbundle(&data->header, data->fd); | |
242 | } | |
243 | ||
244 | static int close_bundle(struct transport *transport) | |
245 | { | |
246 | struct bundle_transport_data *data = transport->data; | |
247 | if (data->fd > 0) | |
248 | close(data->fd); | |
249 | return 0; | |
250 | } | |
251 | ||
9b288516 | 252 | static const struct transport_ops bundle_transport = { |
c7a8a162 JS |
253 | /* set_option */ NULL, |
254 | /* get_refs_list */ get_refs_from_bundle, | |
425b1393 | 255 | /* fetch */ fetch_refs_from_bundle, |
c7a8a162 JS |
256 | /* push */ NULL, |
257 | /* disconnect */ close_bundle | |
9b288516 DB |
258 | }; |
259 | ||
260 | struct git_transport_data { | |
261 | unsigned thin : 1; | |
c29727d5 DB |
262 | unsigned keep : 1; |
263 | ||
264 | int unpacklimit; | |
9b288516 | 265 | |
c29727d5 DB |
266 | int depth; |
267 | ||
268 | const char *uploadpack; | |
9b288516 DB |
269 | const char *receivepack; |
270 | }; | |
271 | ||
272 | static int set_git_option(struct transport *connection, | |
273 | const char *name, const char *value) | |
274 | { | |
275 | struct git_transport_data *data = connection->data; | |
c29727d5 DB |
276 | if (!strcmp(name, TRANS_OPT_UPLOADPACK)) { |
277 | data->uploadpack = value; | |
278 | return 0; | |
279 | } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) { | |
9b288516 DB |
280 | data->receivepack = value; |
281 | return 0; | |
282 | } else if (!strcmp(name, TRANS_OPT_THIN)) { | |
283 | data->thin = !!value; | |
284 | return 0; | |
c29727d5 DB |
285 | } else if (!strcmp(name, TRANS_OPT_KEEP)) { |
286 | data->keep = !!value; | |
287 | return 0; | |
288 | } else if (!strcmp(name, TRANS_OPT_UNPACKLIMIT)) { | |
289 | data->unpacklimit = atoi(value); | |
290 | return 0; | |
291 | } else if (!strcmp(name, TRANS_OPT_DEPTH)) { | |
292 | if (!value) | |
293 | data->depth = 0; | |
294 | else | |
295 | data->depth = atoi(value); | |
296 | return 0; | |
9b288516 DB |
297 | } |
298 | return 1; | |
299 | } | |
300 | ||
c29727d5 DB |
301 | static struct ref *get_refs_via_connect(const struct transport *transport) |
302 | { | |
303 | struct git_transport_data *data = transport->data; | |
304 | struct ref *refs; | |
305 | int fd[2]; | |
306 | pid_t pid; | |
307 | char *dest = xstrdup(transport->url); | |
308 | ||
309 | pid = git_connect(fd, dest, data->uploadpack, 0); | |
310 | ||
311 | if (pid < 0) | |
312 | die("Failed to connect to \"%s\"", transport->url); | |
313 | ||
314 | get_remote_heads(fd[0], &refs, 0, NULL, 0); | |
315 | packet_flush(fd[1]); | |
316 | ||
317 | finish_connect(pid); | |
318 | ||
319 | free(dest); | |
320 | ||
321 | return refs; | |
322 | } | |
323 | ||
1788c39c | 324 | static int fetch_refs_via_pack(struct transport *transport, |
425b1393 | 325 | int nr_heads, struct ref **to_fetch) |
c29727d5 DB |
326 | { |
327 | struct git_transport_data *data = transport->data; | |
425b1393 | 328 | char **heads = xmalloc(nr_heads * sizeof(*heads)); |
e4cd6c7a | 329 | char **origh = xmalloc(nr_heads * sizeof(*origh)); |
c29727d5 DB |
330 | struct ref *refs; |
331 | char *dest = xstrdup(transport->url); | |
332 | struct fetch_pack_args args; | |
425b1393 | 333 | int i; |
c29727d5 DB |
334 | |
335 | args.uploadpack = data->uploadpack; | |
336 | args.quiet = 0; | |
337 | args.keep_pack = data->keep; | |
338 | args.unpacklimit = data->unpacklimit; | |
339 | args.use_thin_pack = data->thin; | |
340 | args.fetch_all = 0; | |
341 | args.verbose = transport->verbose; | |
342 | args.depth = data->depth; | |
343 | args.no_progress = 0; | |
344 | ||
345 | setup_fetch_pack(&args); | |
346 | ||
425b1393 | 347 | for (i = 0; i < nr_heads; i++) |
e4cd6c7a | 348 | origh[i] = heads[i] = xstrdup(to_fetch[i]->name); |
1788c39c | 349 | refs = fetch_pack(dest, nr_heads, heads, &transport->pack_lockfile); |
c29727d5 | 350 | |
425b1393 | 351 | for (i = 0; i < nr_heads; i++) |
e4cd6c7a SP |
352 | free(origh[i]); |
353 | free(origh); | |
354 | free(heads); | |
c29727d5 | 355 | free_refs(refs); |
c29727d5 DB |
356 | free(dest); |
357 | return 0; | |
358 | } | |
359 | ||
9b288516 DB |
360 | static int git_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) { |
361 | struct git_transport_data *data = transport->data; | |
362 | const char **argv; | |
363 | char *rem; | |
364 | int argc; | |
365 | int err; | |
366 | ||
367 | argv = xmalloc((refspec_nr + 11) * sizeof(char *)); | |
368 | argv[0] = "send-pack"; | |
369 | argc = 1; | |
370 | if (flags & TRANSPORT_PUSH_ALL) | |
371 | argv[argc++] = "--all"; | |
372 | if (flags & TRANSPORT_PUSH_FORCE) | |
373 | argv[argc++] = "--force"; | |
374 | if (data->receivepack) { | |
375 | char *rp = xmalloc(strlen(data->receivepack) + 16); | |
376 | sprintf(rp, "--receive-pack=%s", data->receivepack); | |
377 | argv[argc++] = rp; | |
378 | } | |
379 | if (data->thin) | |
380 | argv[argc++] = "--thin"; | |
381 | rem = xmalloc(strlen(transport->remote->name) + 10); | |
382 | sprintf(rem, "--remote=%s", transport->remote->name); | |
383 | argv[argc++] = rem; | |
384 | argv[argc++] = transport->url; | |
385 | while (refspec_nr--) | |
386 | argv[argc++] = *refspec++; | |
387 | argv[argc] = NULL; | |
388 | err = run_command_v_opt(argv, RUN_GIT_CMD); | |
389 | switch (err) { | |
390 | case -ERR_RUN_COMMAND_FORK: | |
391 | error("unable to fork for %s", argv[0]); | |
392 | case -ERR_RUN_COMMAND_EXEC: | |
393 | error("unable to exec %s", argv[0]); | |
394 | break; | |
395 | case -ERR_RUN_COMMAND_WAITPID: | |
396 | case -ERR_RUN_COMMAND_WAITPID_WRONG_PID: | |
397 | case -ERR_RUN_COMMAND_WAITPID_SIGNAL: | |
398 | case -ERR_RUN_COMMAND_WAITPID_NOEXIT: | |
399 | error("%s died with strange error", argv[0]); | |
400 | } | |
401 | return !!err; | |
402 | } | |
403 | ||
404 | static const struct transport_ops git_transport = { | |
405 | /* set_option */ set_git_option, | |
c29727d5 | 406 | /* get_refs_list */ get_refs_via_connect, |
425b1393 | 407 | /* fetch */ fetch_refs_via_pack, |
9b288516 DB |
408 | /* push */ git_transport_push |
409 | }; | |
410 | ||
411 | static int is_local(const char *url) | |
412 | { | |
413 | const char *colon = strchr(url, ':'); | |
414 | const char *slash = strchr(url, '/'); | |
415 | return !colon || (slash && slash < colon); | |
416 | } | |
417 | ||
418 | static int is_file(const char *url) | |
419 | { | |
420 | struct stat buf; | |
421 | if (stat(url, &buf)) | |
422 | return 0; | |
423 | return S_ISREG(buf.st_mode); | |
424 | } | |
425 | ||
e5f4e214 | 426 | struct transport *transport_get(struct remote *remote, const char *url) |
9b288516 | 427 | { |
8eb554ae SP |
428 | struct transport *ret = xcalloc(1, sizeof(*ret)); |
429 | ||
430 | ret->remote = remote; | |
431 | ret->url = url; | |
8eb554ae | 432 | |
9b288516 | 433 | if (!prefixcmp(url, "rsync://")) { |
9b288516 | 434 | ret->ops = &rsync_transport; |
8eb554ae SP |
435 | } else if (!prefixcmp(url, "http://") |
436 | || !prefixcmp(url, "https://") | |
437 | || !prefixcmp(url, "ftp://")) { | |
9b288516 | 438 | ret->ops = &curl_transport; |
9b288516 | 439 | } else if (is_local(url) && is_file(url)) { |
c7a8a162 | 440 | struct bundle_transport_data *data = xcalloc(1, sizeof(*data)); |
c7a8a162 | 441 | ret->data = data; |
9b288516 DB |
442 | ret->ops = &bundle_transport; |
443 | } else { | |
444 | struct git_transport_data *data = xcalloc(1, sizeof(*data)); | |
9b288516 DB |
445 | ret->data = data; |
446 | data->thin = 1; | |
c29727d5 DB |
447 | data->uploadpack = "git-upload-pack"; |
448 | if (remote && remote->uploadpack) | |
449 | data->uploadpack = remote->uploadpack; | |
9b288516 DB |
450 | data->receivepack = "git-receive-pack"; |
451 | if (remote && remote->receivepack) | |
452 | data->receivepack = remote->receivepack; | |
c29727d5 | 453 | data->unpacklimit = -1; |
9b288516 DB |
454 | ret->ops = &git_transport; |
455 | } | |
8eb554ae | 456 | |
9b288516 DB |
457 | return ret; |
458 | } | |
459 | ||
460 | int transport_set_option(struct transport *transport, | |
461 | const char *name, const char *value) | |
462 | { | |
463 | int ret = 1; | |
464 | if (transport->ops->set_option) | |
465 | ret = transport->ops->set_option(transport, name, value); | |
466 | if (ret < 0) | |
467 | fprintf(stderr, "For '%s' option %s cannot be set to '%s'\n", | |
468 | transport->url, name, value); | |
469 | if (ret > 0) | |
470 | fprintf(stderr, "For '%s' option %s is ignored\n", | |
471 | transport->url, name); | |
472 | return ret; | |
473 | } | |
474 | ||
475 | int transport_push(struct transport *transport, | |
476 | int refspec_nr, const char **refspec, int flags) | |
477 | { | |
478 | if (!transport->ops->push) | |
479 | return 1; | |
480 | return transport->ops->push(transport, refspec_nr, refspec, flags); | |
481 | } | |
482 | ||
c29727d5 DB |
483 | struct ref *transport_get_remote_refs(struct transport *transport) |
484 | { | |
485 | if (!transport->remote_refs) | |
486 | transport->remote_refs = | |
487 | transport->ops->get_refs_list(transport); | |
488 | return transport->remote_refs; | |
489 | } | |
490 | ||
c29727d5 DB |
491 | int transport_fetch_refs(struct transport *transport, struct ref *refs) |
492 | { | |
425b1393 | 493 | int rc; |
7a2bff45 | 494 | int nr_heads = 0, nr_alloc = 0; |
425b1393 | 495 | struct ref **heads = NULL; |
c29727d5 | 496 | struct ref *rm; |
c29727d5 DB |
497 | |
498 | for (rm = refs; rm; rm = rm->next) { | |
499 | if (rm->peer_ref && | |
500 | !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1)) | |
501 | continue; | |
7a2bff45 | 502 | ALLOC_GROW(heads, nr_heads + 1, nr_alloc); |
425b1393 | 503 | heads[nr_heads++] = rm; |
c29727d5 DB |
504 | } |
505 | ||
425b1393 | 506 | rc = transport->ops->fetch(transport, nr_heads, heads); |
c29727d5 | 507 | free(heads); |
425b1393 | 508 | return rc; |
c29727d5 DB |
509 | } |
510 | ||
1788c39c SP |
511 | void transport_unlock_pack(struct transport *transport) |
512 | { | |
513 | if (transport->pack_lockfile) { | |
514 | unlink(transport->pack_lockfile); | |
515 | free(transport->pack_lockfile); | |
516 | transport->pack_lockfile = NULL; | |
517 | } | |
518 | } | |
519 | ||
9b288516 DB |
520 | int transport_disconnect(struct transport *transport) |
521 | { | |
522 | int ret = 0; | |
523 | if (transport->ops->disconnect) | |
524 | ret = transport->ops->disconnect(transport); | |
525 | free(transport); | |
526 | return ret; | |
527 | } |