@matheusbsbs / matheus-bagliano
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1 #define USE_THE_REPOSITORY_VARIABLE
2
3 #include "git-compat-util.h"
4 #include "environment.h"
5 #include "hex.h"
6 #include "repository.h"
7 #include "commit.h"
8 #include "tag.h"
9 #include "blob.h"
10 #include "http.h"
11 #include "diff.h"
12 #include "revision.h"
13 #include "remote.h"
14 #include "list-objects.h"
15 #include "setup.h"
16 #include "sigchain.h"
17 #include "strvec.h"
18 #include "tree.h"
19 #include "tree-walk.h"
20 #include "url.h"
21 #include "packfile.h"
22 #include "object-file.h"
23 #include "odb.h"
24 #include "commit-reach.h"
25
26 #ifdef EXPAT_NEEDS_XMLPARSE_H
27 #include <xmlparse.h>
28 #else
29 #include <expat.h>
30 #endif
31
32 static const char http_push_usage[] =
33 "git http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
34
35 #ifndef XML_STATUS_OK
36 enum XML_Status {
37 XML_STATUS_OK = 1,
38 XML_STATUS_ERROR = 0
39 };
40 #define XML_STATUS_OK 1
41 #define XML_STATUS_ERROR 0
42 #endif
43
44 #define PREV_BUF_SIZE 4096
45
46 /* DAV methods */
47 #define DAV_LOCK "LOCK"
48 #define DAV_MKCOL "MKCOL"
49 #define DAV_MOVE "MOVE"
50 #define DAV_PROPFIND "PROPFIND"
51 #define DAV_PUT "PUT"
52 #define DAV_UNLOCK "UNLOCK"
53 #define DAV_DELETE "DELETE"
54
55 /* DAV lock flags */
56 #define DAV_PROP_LOCKWR (1u << 0)
57 #define DAV_PROP_LOCKEX (1u << 1)
58 #define DAV_LOCK_OK (1u << 2)
59
60 /* DAV XML properties */
61 #define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
62 #define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
63 #define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
64 #define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
65 #define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
66 #define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
67 #define DAV_PROPFIND_RESP ".multistatus.response"
68 #define DAV_PROPFIND_NAME ".multistatus.response.href"
69 #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
70
71 /* DAV request body templates */
72 #define PROPFIND_SUPPORTEDLOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:prop xmlns:R=\"%s\">\n<D:supportedlock/>\n</D:prop>\n</D:propfind>"
73 #define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
74 #define LOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:lockinfo xmlns:D=\"DAV:\">\n<D:lockscope><D:exclusive/></D:lockscope>\n<D:locktype><D:write/></D:locktype>\n<D:owner>\n<D:href>mailto:%s</D:href>\n</D:owner>\n</D:lockinfo>"
75
76 #define LOCK_TIME 600
77 #define LOCK_REFRESH 30
78
79 /* Remember to update object flag allocation in object.h */
80 #define LOCAL (1u<<11)
81 #define REMOTE (1u<<12)
82 #define FETCHING (1u<<13)
83 #define PUSHING (1u<<14)
84
85 /* We allow "recursive" symbolic refs. Only within reason, though */
86 #define MAXDEPTH 5
87
88 static int pushing;
89 static int aborted;
90 static signed char remote_dir_exists[256];
91
92 static int push_verbosely;
93 static int push_all = MATCH_REFS_NONE;
94 static int force_all;
95 static int dry_run;
96 static int helper_status;
97
98 static struct object_list *objects;
99
100 struct repo {
101 char *url;
102 const char *path;
103 int path_len;
104 int has_info_refs;
105 int can_update_info_refs;
106 int has_info_packs;
107 struct packfile_list packs;
108 struct remote_lock *locks;
109 };
110
111 static struct repo *repo;
112
113 enum transfer_state {
114 NEED_FETCH,
115 RUN_FETCH_LOOSE,
116 RUN_FETCH_PACKED,
117 NEED_PUSH,
118 RUN_MKCOL,
119 RUN_PUT,
120 RUN_MOVE,
121 ABORTED,
122 COMPLETE
123 };
124
125 struct transfer_request {
126 struct object *obj;
127 struct packed_git *target;
128 char *url;
129 char *dest;
130 struct remote_lock *lock;
131 struct curl_slist *headers;
132 struct buffer buffer;
133 enum transfer_state state;
134 CURLcode curl_result;
135 char errorstr[CURL_ERROR_SIZE];
136 long http_code;
137 void *userData;
138 struct active_request_slot *slot;
139 struct transfer_request *next;
140 };
141
142 static struct transfer_request *request_queue_head;
143
144 struct xml_ctx {
145 char *name;
146 int len;
147 char *cdata;
148 void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
149 void *userData;
150 };
151
152 struct remote_lock {
153 char *url;
154 char *owner;
155 char *token;
156 char tmpfile_suffix[GIT_MAX_HEXSZ + 1];
157 time_t start_time;
158 long timeout;
159 int refreshing;
160 struct remote_lock *next;
161 };
162
163 /* Flags that control remote_ls processing */
164 #define PROCESS_FILES (1u << 0)
165 #define PROCESS_DIRS (1u << 1)
166 #define RECURSIVE (1u << 2)
167
168 /* Flags that remote_ls passes to callback functions */
169 #define IS_DIR (1u << 0)
170
171 struct remote_ls_ctx {
172 char *path;
173 void (*userFunc)(struct remote_ls_ctx *ls);
174 void *userData;
175 int flags;
176 char *dentry_name;
177 int dentry_flags;
178 struct remote_ls_ctx *parent;
179 };
180
181 /* get_dav_token_headers options */
182 enum dav_header_flag {
183 DAV_HEADER_IF = (1u << 0),
184 DAV_HEADER_LOCK = (1u << 1),
185 DAV_HEADER_TIMEOUT = (1u << 2)
186 };
187
188 static char *xml_entities(const char *s)
189 {
190 struct strbuf buf = STRBUF_INIT;
191 strbuf_addstr_xml_quoted(&buf, s);
192 return strbuf_detach(&buf, NULL);
193 }
194
195 static void curl_setup_http_get(CURL *curl, const char *url,
196 const char *custom_req)
197 {
198 curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
199 curl_easy_setopt(curl, CURLOPT_URL, url);
200 curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req);
201 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_null);
202 }
203
204 static void curl_setup_http(CURL *curl, const char *url,
205 const char *custom_req, struct buffer *buffer,
206 curl_write_callback write_fn)
207 {
208 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
209 curl_easy_setopt(curl, CURLOPT_URL, url);
210 curl_easy_setopt(curl, CURLOPT_INFILE, buffer);
211 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
212 cast_size_t_to_curl_off_t(buffer->buf.len));
213 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
214 curl_easy_setopt(curl, CURLOPT_SEEKFUNCTION, seek_buffer);
215 curl_easy_setopt(curl, CURLOPT_SEEKDATA, buffer);
216 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_fn);
217 curl_easy_setopt(curl, CURLOPT_NOBODY, 0L);
218 curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req);
219 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
220 }
221
222 static struct curl_slist *get_dav_token_headers(struct remote_lock *lock, enum dav_header_flag options)
223 {
224 struct strbuf buf = STRBUF_INIT;
225 struct curl_slist *dav_headers = http_copy_default_headers();
226
227 if (options & DAV_HEADER_IF) {
228 strbuf_addf(&buf, "If: (<%s>)", lock->token);
229 dav_headers = curl_slist_append(dav_headers, buf.buf);
230 strbuf_reset(&buf);
231 }
232 if (options & DAV_HEADER_LOCK) {
233 strbuf_addf(&buf, "Lock-Token: <%s>", lock->token);
234 dav_headers = curl_slist_append(dav_headers, buf.buf);
235 strbuf_reset(&buf);
236 }
237 if (options & DAV_HEADER_TIMEOUT) {
238 strbuf_addf(&buf, "Timeout: Second-%ld", lock->timeout);
239 dav_headers = curl_slist_append(dav_headers, buf.buf);
240 strbuf_reset(&buf);
241 }
242 strbuf_release(&buf);
243
244 return dav_headers;
245 }
246
247 static void finish_request(struct transfer_request *request);
248 static void release_request(struct transfer_request *request);
249
250 static void process_response(void *callback_data)
251 {
252 struct transfer_request *request =
253 (struct transfer_request *)callback_data;
254
255 finish_request(request);
256 }
257
258 static void start_fetch_loose(struct transfer_request *request)
259 {
260 struct active_request_slot *slot;
261 struct http_object_request *obj_req;
262
263 obj_req = new_http_object_request(repo->url, &request->obj->oid);
264 if (!obj_req) {
265 request->state = ABORTED;
266 return;
267 }
268
269 slot = obj_req->slot;
270 slot->callback_func = process_response;
271 slot->callback_data = request;
272 request->slot = slot;
273 request->userData = obj_req;
274
275 /* Try to get the request started, abort the request on error */
276 request->state = RUN_FETCH_LOOSE;
277 if (!start_active_slot(slot)) {
278 fprintf(stderr, "Unable to start GET request\n");
279 repo->can_update_info_refs = 0;
280 release_http_object_request(&obj_req);
281 release_request(request);
282 }
283 }
284
285 static void start_mkcol(struct transfer_request *request)
286 {
287 char *hex = oid_to_hex(&request->obj->oid);
288 struct active_request_slot *slot;
289
290 request->url = get_remote_object_url(repo->url, hex, 1);
291
292 slot = get_active_slot();
293 slot->callback_func = process_response;
294 slot->callback_data = request;
295 curl_setup_http_get(slot->curl, request->url, DAV_MKCOL);
296 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
297
298 if (start_active_slot(slot)) {
299 request->slot = slot;
300 request->state = RUN_MKCOL;
301 } else {
302 request->state = ABORTED;
303 FREE_AND_NULL(request->url);
304 }
305 }
306
307 static void start_fetch_packed(struct transfer_request *request)
308 {
309 struct packed_git *target;
310
311 struct transfer_request *check_request = request_queue_head;
312 struct http_pack_request *preq;
313
314 target = packfile_list_find_oid(repo->packs.head, &request->obj->oid);
315 if (!target) {
316 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", oid_to_hex(&request->obj->oid));
317 repo->can_update_info_refs = 0;
318 release_request(request);
319 return;
320 }
321 close_pack_index(target);
322 request->target = target;
323
324 fprintf(stderr, "Fetching pack %s\n",
325 hash_to_hex(target->hash));
326 fprintf(stderr, " which contains %s\n", oid_to_hex(&request->obj->oid));
327
328 preq = new_http_pack_request(target->hash, repo->url);
329 if (!preq) {
330 repo->can_update_info_refs = 0;
331 return;
332 }
333
334 /* Make sure there isn't another open request for this pack */
335 while (check_request) {
336 if (check_request->state == RUN_FETCH_PACKED &&
337 !strcmp(check_request->url, preq->url)) {
338 release_http_pack_request(preq);
339 release_request(request);
340 return;
341 }
342 check_request = check_request->next;
343 }
344
345 preq->slot->callback_func = process_response;
346 preq->slot->callback_data = request;
347 request->slot = preq->slot;
348 request->userData = preq;
349
350 /* Try to get the request started, abort the request on error */
351 request->state = RUN_FETCH_PACKED;
352 if (!start_active_slot(preq->slot)) {
353 fprintf(stderr, "Unable to start GET request\n");
354 release_http_pack_request(preq);
355 repo->can_update_info_refs = 0;
356 release_request(request);
357 }
358 }
359
360 static void start_put(struct transfer_request *request)
361 {
362 char *hex = oid_to_hex(&request->obj->oid);
363 struct active_request_slot *slot;
364 struct strbuf buf = STRBUF_INIT;
365 enum object_type type;
366 char hdr[50];
367 void *unpacked;
368 size_t len;
369 int hdrlen;
370 ssize_t size;
371 git_zstream stream;
372 struct repo_config_values *cfg = repo_config_values(the_repository);
373
374 unpacked = odb_read_object(the_repository->objects, &request->obj->oid,
375 &type, &len);
376 hdrlen = format_object_header(hdr, sizeof(hdr), type, len);
377
378 /* Set it up */
379 git_deflate_init(&stream, cfg->zlib_compression_level);
380 size = git_deflate_bound(&stream, len + hdrlen);
381 strbuf_grow(&request->buffer.buf, size);
382 request->buffer.posn = 0;
383
384 /* Compress it */
385 stream.next_out = (unsigned char *)request->buffer.buf.buf;
386 stream.avail_out = size;
387
388 /* First header.. */
389 stream.next_in = (void *)hdr;
390 stream.avail_in = hdrlen;
391 while (git_deflate(&stream, 0) == Z_OK)
392 ; /* nothing */
393
394 /* Then the data itself.. */
395 stream.next_in = unpacked;
396 stream.avail_in = len;
397 while (git_deflate(&stream, Z_FINISH) == Z_OK)
398 ; /* nothing */
399 git_deflate_end(&stream);
400 free(unpacked);
401
402 request->buffer.buf.len = stream.total_out;
403
404 strbuf_addstr(&buf, "Destination: ");
405 append_remote_object_url(&buf, repo->url, hex, 0);
406 request->dest = strbuf_detach(&buf, NULL);
407
408 append_remote_object_url(&buf, repo->url, hex, 0);
409 strbuf_add(&buf, request->lock->tmpfile_suffix, the_hash_algo->hexsz + 1);
410 request->url = strbuf_detach(&buf, NULL);
411
412 slot = get_active_slot();
413 slot->callback_func = process_response;
414 slot->callback_data = request;
415 curl_setup_http(slot->curl, request->url, DAV_PUT,
416 &request->buffer, fwrite_null);
417
418 if (start_active_slot(slot)) {
419 request->slot = slot;
420 request->state = RUN_PUT;
421 } else {
422 request->state = ABORTED;
423 FREE_AND_NULL(request->url);
424 }
425 }
426
427 static void start_move(struct transfer_request *request)
428 {
429 struct active_request_slot *slot;
430 struct curl_slist *dav_headers = http_copy_default_headers();
431
432 slot = get_active_slot();
433 slot->callback_func = process_response;
434 slot->callback_data = request;
435 curl_setup_http_get(slot->curl, request->url, DAV_MOVE);
436 dav_headers = curl_slist_append(dav_headers, request->dest);
437 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
438 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
439
440 if (start_active_slot(slot)) {
441 request->slot = slot;
442 request->state = RUN_MOVE;
443 request->headers = dav_headers;
444 } else {
445 request->state = ABORTED;
446 FREE_AND_NULL(request->url);
447 curl_slist_free_all(dav_headers);
448 }
449 }
450
451 static int refresh_lock(struct remote_lock *lock)
452 {
453 struct active_request_slot *slot;
454 struct slot_results results;
455 struct curl_slist *dav_headers;
456 int rc = 0;
457
458 lock->refreshing = 1;
459
460 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF | DAV_HEADER_TIMEOUT);
461
462 slot = get_active_slot();
463 slot->results = &results;
464 curl_setup_http_get(slot->curl, lock->url, DAV_LOCK);
465 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
466
467 if (start_active_slot(slot)) {
468 run_active_slot(slot);
469 if (results.curl_result != CURLE_OK) {
470 fprintf(stderr, "LOCK HTTP error %ld\n",
471 results.http_code);
472 } else {
473 lock->start_time = time(NULL);
474 rc = 1;
475 }
476 }
477
478 lock->refreshing = 0;
479 curl_slist_free_all(dav_headers);
480
481 return rc;
482 }
483
484 static void check_locks(void)
485 {
486 struct remote_lock *lock = repo->locks;
487 time_t current_time = time(NULL);
488 int time_remaining;
489
490 while (lock) {
491 time_remaining = lock->start_time + lock->timeout -
492 current_time;
493 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
494 if (!refresh_lock(lock)) {
495 fprintf(stderr,
496 "Unable to refresh lock for %s\n",
497 lock->url);
498 aborted = 1;
499 return;
500 }
501 }
502 lock = lock->next;
503 }
504 }
505
506 static void release_request(struct transfer_request *request)
507 {
508 struct transfer_request *entry = request_queue_head;
509
510 if (request == request_queue_head) {
511 request_queue_head = request->next;
512 } else {
513 while (entry && entry->next != request)
514 entry = entry->next;
515 if (entry)
516 entry->next = request->next;
517 }
518
519 free(request->url);
520 free(request->dest);
521 strbuf_release(&request->buffer.buf);
522 free(request);
523 }
524
525 static void finish_request(struct transfer_request *request)
526 {
527 struct http_pack_request *preq;
528 struct http_object_request *obj_req;
529
530 request->curl_result = request->slot->curl_result;
531 request->http_code = request->slot->http_code;
532 request->slot = NULL;
533
534 /* Keep locks active */
535 check_locks();
536
537 if (request->headers)
538 curl_slist_free_all(request->headers);
539
540 /* URL is reused for MOVE after PUT and used during FETCH */
541 if (request->state != RUN_PUT && request->state != RUN_FETCH_PACKED) {
542 FREE_AND_NULL(request->url);
543 }
544
545 if (request->state == RUN_MKCOL) {
546 if (request->curl_result == CURLE_OK ||
547 request->http_code == 405) {
548 remote_dir_exists[request->obj->oid.hash[0]] = 1;
549 start_put(request);
550 } else {
551 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
552 oid_to_hex(&request->obj->oid),
553 request->curl_result, request->http_code);
554 request->state = ABORTED;
555 aborted = 1;
556 }
557 } else if (request->state == RUN_PUT) {
558 if (request->curl_result == CURLE_OK) {
559 start_move(request);
560 } else {
561 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
562 oid_to_hex(&request->obj->oid),
563 request->curl_result, request->http_code);
564 request->state = ABORTED;
565 aborted = 1;
566 }
567 } else if (request->state == RUN_MOVE) {
568 if (request->curl_result == CURLE_OK) {
569 if (push_verbosely)
570 fprintf(stderr, " sent %s\n",
571 oid_to_hex(&request->obj->oid));
572 request->obj->flags |= REMOTE;
573 release_request(request);
574 } else {
575 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
576 oid_to_hex(&request->obj->oid),
577 request->curl_result, request->http_code);
578 request->state = ABORTED;
579 aborted = 1;
580 }
581 } else if (request->state == RUN_FETCH_LOOSE) {
582 obj_req = (struct http_object_request *)request->userData;
583
584 if (finish_http_object_request(obj_req) == 0)
585 if (obj_req->rename == 0)
586 request->obj->flags |= (LOCAL | REMOTE);
587
588 release_http_object_request(&obj_req);
589
590 /* Try fetching packed if necessary */
591 if (request->obj->flags & LOCAL) {
592 release_request(request);
593 } else
594 start_fetch_packed(request);
595
596 } else if (request->state == RUN_FETCH_PACKED) {
597 int fail = 1;
598 if (request->curl_result != CURLE_OK) {
599 fprintf(stderr, "Unable to get pack file %s\n%s",
600 request->url, curl_errorstr);
601 } else {
602 preq = (struct http_pack_request *)request->userData;
603
604 if (preq) {
605 if (finish_http_pack_request(preq) == 0)
606 fail = 0;
607 release_http_pack_request(preq);
608 }
609 }
610 if (fail)
611 repo->can_update_info_refs = 0;
612 else
613 http_install_packfile(request->target, &repo->packs);
614 release_request(request);
615 }
616 }
617
618 static int is_running_queue;
619 static int fill_active_slot(void *data UNUSED)
620 {
621 struct transfer_request *request;
622
623 if (aborted || !is_running_queue)
624 return 0;
625
626 for (request = request_queue_head; request; request = request->next) {
627 if (request->state == NEED_FETCH) {
628 start_fetch_loose(request);
629 return 1;
630 } else if (pushing && request->state == NEED_PUSH) {
631 if (remote_dir_exists[request->obj->oid.hash[0]] == 1) {
632 start_put(request);
633 } else {
634 start_mkcol(request);
635 }
636 return 1;
637 }
638 }
639 return 0;
640 }
641
642 static void get_remote_object_list(unsigned char parent);
643
644 static void add_fetch_request(struct object *obj)
645 {
646 struct transfer_request *request;
647
648 check_locks();
649
650 /*
651 * Don't fetch the object if it's known to exist locally
652 * or is already in the request queue
653 */
654 if (remote_dir_exists[obj->oid.hash[0]] == -1)
655 get_remote_object_list(obj->oid.hash[0]);
656 if (obj->flags & (LOCAL | FETCHING))
657 return;
658
659 obj->flags |= FETCHING;
660 CALLOC_ARRAY(request, 1);
661 request->obj = obj;
662 request->state = NEED_FETCH;
663 strbuf_init(&request->buffer.buf, 0);
664 request->next = request_queue_head;
665 request_queue_head = request;
666
667 fill_active_slots();
668 step_active_slots();
669 }
670
671 static int add_send_request(struct object *obj, struct remote_lock *lock)
672 {
673 struct transfer_request *request;
674 struct packed_git *target;
675
676 /* Keep locks active */
677 check_locks();
678
679 /*
680 * Don't push the object if it's known to exist on the remote
681 * or is already in the request queue
682 */
683 if (remote_dir_exists[obj->oid.hash[0]] == -1)
684 get_remote_object_list(obj->oid.hash[0]);
685 if (obj->flags & (REMOTE | PUSHING))
686 return 0;
687 target = packfile_list_find_oid(repo->packs.head, &obj->oid);
688 if (target) {
689 obj->flags |= REMOTE;
690 return 0;
691 }
692
693 obj->flags |= PUSHING;
694 CALLOC_ARRAY(request, 1);
695 request->obj = obj;
696 request->lock = lock;
697 request->state = NEED_PUSH;
698 strbuf_init(&request->buffer.buf, 0);
699 request->next = request_queue_head;
700 request_queue_head = request;
701
702 fill_active_slots();
703 step_active_slots();
704
705 return 1;
706 }
707
708 static int fetch_indices(void)
709 {
710 int ret;
711
712 if (push_verbosely)
713 fprintf(stderr, "Getting pack list\n");
714
715 switch (http_get_info_packs(repo->url, &repo->packs)) {
716 case HTTP_OK:
717 case HTTP_MISSING_TARGET:
718 ret = 0;
719 break;
720 default:
721 ret = -1;
722 }
723
724 return ret;
725 }
726
727 static void one_remote_object(const struct object_id *oid)
728 {
729 struct object *obj;
730
731 obj = lookup_object(the_repository, oid);
732 if (!obj)
733 obj = parse_object(the_repository, oid);
734
735 /* Ignore remote objects that don't exist locally */
736 if (!obj)
737 return;
738
739 obj->flags |= REMOTE;
740 if (!object_list_contains(objects, obj))
741 object_list_insert(obj, &objects);
742 }
743
744 static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
745 {
746 int *lock_flags = (int *)ctx->userData;
747
748 if (tag_closed) {
749 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
750 if ((*lock_flags & DAV_PROP_LOCKEX) &&
751 (*lock_flags & DAV_PROP_LOCKWR)) {
752 *lock_flags |= DAV_LOCK_OK;
753 }
754 *lock_flags &= DAV_LOCK_OK;
755 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
756 *lock_flags |= DAV_PROP_LOCKWR;
757 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
758 *lock_flags |= DAV_PROP_LOCKEX;
759 }
760 }
761 }
762
763 static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
764 {
765 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
766 struct git_hash_ctx hash_ctx;
767 unsigned char lock_token_hash[GIT_MAX_RAWSZ];
768
769 if (tag_closed && ctx->cdata) {
770 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
771 lock->owner = xstrdup(ctx->cdata);
772 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
773 const char *arg;
774 if (skip_prefix(ctx->cdata, "Second-", &arg))
775 lock->timeout = strtol(arg, NULL, 10);
776 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
777 lock->token = xstrdup(ctx->cdata);
778
779 git_hash_init(&hash_ctx, the_hash_algo);
780 git_hash_update(&hash_ctx, lock->token, strlen(lock->token));
781 git_hash_final(lock_token_hash, &hash_ctx);
782
783 lock->tmpfile_suffix[0] = '_';
784 memcpy(lock->tmpfile_suffix + 1, hash_to_hex(lock_token_hash), the_hash_algo->hexsz);
785 }
786 }
787 }
788
789 static void one_remote_ref(const char *refname);
790
791 static void
792 xml_start_tag(void *userData, const char *name, const char **atts UNUSED)
793 {
794 struct xml_ctx *ctx = (struct xml_ctx *)userData;
795 const char *c = strchr(name, ':');
796 int old_namelen, new_len;
797
798 if (!c)
799 c = name;
800 else
801 c++;
802
803 old_namelen = strlen(ctx->name);
804 new_len = old_namelen + strlen(c) + 2;
805
806 if (new_len > ctx->len) {
807 ctx->name = xrealloc(ctx->name, new_len);
808 ctx->len = new_len;
809 }
810 xsnprintf(ctx->name + old_namelen, ctx->len - old_namelen, ".%s", c);
811
812 FREE_AND_NULL(ctx->cdata);
813
814 ctx->userFunc(ctx, 0);
815 }
816
817 static void
818 xml_end_tag(void *userData, const char *name)
819 {
820 struct xml_ctx *ctx = (struct xml_ctx *)userData;
821 const char *c = strchr(name, ':');
822 char *ep;
823
824 ctx->userFunc(ctx, 1);
825
826 if (!c)
827 c = name;
828 else
829 c++;
830
831 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
832 *ep = 0;
833 }
834
835 static void
836 xml_cdata(void *userData, const XML_Char *s, int len)
837 {
838 struct xml_ctx *ctx = (struct xml_ctx *)userData;
839 free(ctx->cdata);
840 ctx->cdata = xmemdupz(s, len);
841 }
842
843 static struct remote_lock *lock_remote(const char *path, long timeout)
844 {
845 struct active_request_slot *slot;
846 struct slot_results results;
847 struct buffer out_buffer = { STRBUF_INIT, 0 };
848 struct strbuf in_buffer = STRBUF_INIT;
849 char *url;
850 char *ep;
851 char timeout_header[25];
852 struct remote_lock *lock = NULL;
853 struct curl_slist *dav_headers = http_copy_default_headers();
854 struct xml_ctx ctx;
855 char *escaped;
856
857 url = xstrfmt("%s%s", repo->url, path);
858
859 /* Make sure leading directories exist for the remote ref */
860 ep = strchr(url + strlen(repo->url) + 1, '/');
861 while (ep) {
862 char saved_character = ep[1];
863 ep[1] = '\0';
864 slot = get_active_slot();
865 slot->results = &results;
866 curl_setup_http_get(slot->curl, url, DAV_MKCOL);
867 if (start_active_slot(slot)) {
868 run_active_slot(slot);
869 if (results.curl_result != CURLE_OK &&
870 results.http_code != 405) {
871 fprintf(stderr,
872 "Unable to create branch path %s\n",
873 url);
874 free(url);
875 return NULL;
876 }
877 } else {
878 fprintf(stderr, "Unable to start MKCOL request\n");
879 free(url);
880 return NULL;
881 }
882 ep[1] = saved_character;
883 ep = strchr(ep + 1, '/');
884 }
885
886 escaped = xml_entities(ident_default_email());
887 strbuf_addf(&out_buffer.buf, LOCK_REQUEST, escaped);
888 free(escaped);
889
890 xsnprintf(timeout_header, sizeof(timeout_header), "Timeout: Second-%ld", timeout);
891 dav_headers = curl_slist_append(dav_headers, timeout_header);
892 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
893
894 slot = get_active_slot();
895 slot->results = &results;
896 curl_setup_http(slot->curl, url, DAV_LOCK, &out_buffer, fwrite_buffer);
897 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
898 curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &in_buffer);
899
900 CALLOC_ARRAY(lock, 1);
901 lock->timeout = -1;
902
903 if (start_active_slot(slot)) {
904 run_active_slot(slot);
905 if (results.curl_result == CURLE_OK) {
906 XML_Parser parser = XML_ParserCreate(NULL);
907 enum XML_Status result;
908 ctx.name = xcalloc(10, 1);
909 ctx.len = 0;
910 ctx.cdata = NULL;
911 ctx.userFunc = handle_new_lock_ctx;
912 ctx.userData = lock;
913 XML_SetUserData(parser, &ctx);
914 XML_SetElementHandler(parser, xml_start_tag,
915 xml_end_tag);
916 XML_SetCharacterDataHandler(parser, xml_cdata);
917 result = XML_Parse(parser, in_buffer.buf,
918 in_buffer.len, 1);
919 free(ctx.name);
920 free(ctx.cdata);
921 if (result != XML_STATUS_OK) {
922 fprintf(stderr, "XML error: %s\n",
923 XML_ErrorString(
924 XML_GetErrorCode(parser)));
925 lock->timeout = -1;
926 }
927 XML_ParserFree(parser);
928 } else {
929 fprintf(stderr,
930 "error: curl result=%d, HTTP code=%ld\n",
931 results.curl_result, results.http_code);
932 }
933 } else {
934 fprintf(stderr, "Unable to start LOCK request\n");
935 }
936
937 curl_slist_free_all(dav_headers);
938 strbuf_release(&out_buffer.buf);
939 strbuf_release(&in_buffer);
940
941 if (lock->token == NULL || lock->timeout <= 0) {
942 free(lock->token);
943 free(lock->owner);
944 free(url);
945 FREE_AND_NULL(lock);
946 } else {
947 lock->url = url;
948 lock->start_time = time(NULL);
949 lock->next = repo->locks;
950 repo->locks = lock;
951 }
952
953 return lock;
954 }
955
956 static int unlock_remote(struct remote_lock *lock)
957 {
958 struct active_request_slot *slot;
959 struct slot_results results;
960 struct remote_lock *prev = repo->locks;
961 struct curl_slist *dav_headers;
962 int rc = 0;
963
964 dav_headers = get_dav_token_headers(lock, DAV_HEADER_LOCK);
965
966 slot = get_active_slot();
967 slot->results = &results;
968 curl_setup_http_get(slot->curl, lock->url, DAV_UNLOCK);
969 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
970
971 if (start_active_slot(slot)) {
972 run_active_slot(slot);
973 if (results.curl_result == CURLE_OK)
974 rc = 1;
975 else
976 fprintf(stderr, "UNLOCK HTTP error %ld\n",
977 results.http_code);
978 } else {
979 fprintf(stderr, "Unable to start UNLOCK request\n");
980 }
981
982 curl_slist_free_all(dav_headers);
983
984 if (repo->locks == lock) {
985 repo->locks = lock->next;
986 } else {
987 while (prev && prev->next != lock)
988 prev = prev->next;
989 if (prev)
990 prev->next = lock->next;
991 }
992
993 free(lock->owner);
994 free(lock->url);
995 free(lock->token);
996 free(lock);
997
998 return rc;
999 }
1000
1001 static void remove_locks(void)
1002 {
1003 struct remote_lock *lock = repo->locks;
1004
1005 fprintf(stderr, "Removing remote locks...\n");
1006 while (lock) {
1007 struct remote_lock *next = lock->next;
1008 unlock_remote(lock);
1009 lock = next;
1010 }
1011 }
1012
1013 static void remove_locks_on_signal(int signo)
1014 {
1015 remove_locks();
1016 sigchain_pop(signo);
1017 raise(signo);
1018 }
1019
1020 static void remote_ls(const char *path, int flags,
1021 void (*userFunc)(struct remote_ls_ctx *ls),
1022 void *userData);
1023
1024 /* extract hex from sharded "xx/x{38}" filename */
1025 static int get_oid_hex_from_objpath(const char *path, struct object_id *oid)
1026 {
1027 memset(oid->hash, 0, GIT_MAX_RAWSZ);
1028 oid->algo = hash_algo_by_ptr(the_hash_algo);
1029
1030 if (strlen(path) != the_hash_algo->hexsz + 1)
1031 return -1;
1032
1033 if (hex_to_bytes(oid->hash, path, 1))
1034 return -1;
1035 path += 2;
1036 path++; /* skip '/' */
1037
1038 return hex_to_bytes(oid->hash + 1, path, the_hash_algo->rawsz - 1);
1039 }
1040
1041 static void process_ls_object(struct remote_ls_ctx *ls)
1042 {
1043 unsigned int *parent = (unsigned int *)ls->userData;
1044 const char *path = ls->dentry_name;
1045 struct object_id oid;
1046
1047 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1048 remote_dir_exists[*parent] = 1;
1049 return;
1050 }
1051
1052 if (!skip_prefix(path, "objects/", &path) ||
1053 get_oid_hex_from_objpath(path, &oid))
1054 return;
1055
1056 one_remote_object(&oid);
1057 }
1058
1059 static void process_ls_ref(struct remote_ls_ctx *ls)
1060 {
1061 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1062 fprintf(stderr, " %s\n", ls->dentry_name);
1063 return;
1064 }
1065
1066 if (!(ls->dentry_flags & IS_DIR))
1067 one_remote_ref(ls->dentry_name);
1068 }
1069
1070 static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1071 {
1072 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
1073
1074 if (tag_closed) {
1075 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1076 if (ls->dentry_flags & IS_DIR) {
1077
1078 /* ensure collection names end with slash */
1079 str_end_url_with_slash(ls->dentry_name, &ls->dentry_name);
1080
1081 if (ls->flags & PROCESS_DIRS) {
1082 ls->userFunc(ls);
1083 }
1084 if (strcmp(ls->dentry_name, ls->path) &&
1085 ls->flags & RECURSIVE) {
1086 remote_ls(ls->dentry_name,
1087 ls->flags,
1088 ls->userFunc,
1089 ls->userData);
1090 }
1091 } else if (ls->flags & PROCESS_FILES) {
1092 ls->userFunc(ls);
1093 }
1094 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1095 char *path = ctx->cdata;
1096 if (*ctx->cdata == 'h') {
1097 path = strstr(path, "//");
1098 if (path) {
1099 path = strchr(path+2, '/');
1100 }
1101 }
1102 if (path) {
1103 const char *url = repo->url;
1104 if (repo->path)
1105 url = repo->path;
1106 if (strncmp(path, url, repo->path_len))
1107 error("Parsed path '%s' does not match url: '%s'",
1108 path, url);
1109 else {
1110 path += repo->path_len;
1111 ls->dentry_name = xstrdup(path);
1112 }
1113 }
1114 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1115 ls->dentry_flags |= IS_DIR;
1116 }
1117 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1118 FREE_AND_NULL(ls->dentry_name);
1119 ls->dentry_flags = 0;
1120 }
1121 }
1122
1123 /*
1124 * NEEDSWORK: remote_ls() ignores info/refs on the remote side. But it
1125 * should _only_ heed the information from that file, instead of trying to
1126 * determine the refs from the remote file system (badly: it does not even
1127 * know about packed-refs).
1128 */
1129 static void remote_ls(const char *path, int flags,
1130 void (*userFunc)(struct remote_ls_ctx *ls),
1131 void *userData)
1132 {
1133 char *url = xstrfmt("%s%s", repo->url, path);
1134 struct active_request_slot *slot;
1135 struct slot_results results;
1136 struct strbuf in_buffer = STRBUF_INIT;
1137 struct buffer out_buffer = { STRBUF_INIT, 0 };
1138 struct curl_slist *dav_headers = http_copy_default_headers();
1139 struct xml_ctx ctx;
1140 struct remote_ls_ctx ls;
1141
1142 ls.flags = flags;
1143 ls.path = xstrdup(path);
1144 ls.dentry_name = NULL;
1145 ls.dentry_flags = 0;
1146 ls.userData = userData;
1147 ls.userFunc = userFunc;
1148
1149 strbuf_addstr(&out_buffer.buf, PROPFIND_ALL_REQUEST);
1150
1151 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1152 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1153
1154 slot = get_active_slot();
1155 slot->results = &results;
1156 curl_setup_http(slot->curl, url, DAV_PROPFIND,
1157 &out_buffer, fwrite_buffer);
1158 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1159 curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &in_buffer);
1160
1161 if (start_active_slot(slot)) {
1162 run_active_slot(slot);
1163 if (results.curl_result == CURLE_OK) {
1164 XML_Parser parser = XML_ParserCreate(NULL);
1165 enum XML_Status result;
1166 ctx.name = xcalloc(10, 1);
1167 ctx.len = 0;
1168 ctx.cdata = NULL;
1169 ctx.userFunc = handle_remote_ls_ctx;
1170 ctx.userData = &ls;
1171 XML_SetUserData(parser, &ctx);
1172 XML_SetElementHandler(parser, xml_start_tag,
1173 xml_end_tag);
1174 XML_SetCharacterDataHandler(parser, xml_cdata);
1175 result = XML_Parse(parser, in_buffer.buf,
1176 in_buffer.len, 1);
1177 free(ctx.name);
1178 free(ctx.cdata);
1179
1180 if (result != XML_STATUS_OK) {
1181 fprintf(stderr, "XML error: %s\n",
1182 XML_ErrorString(
1183 XML_GetErrorCode(parser)));
1184 }
1185 XML_ParserFree(parser);
1186 }
1187 } else {
1188 fprintf(stderr, "Unable to start PROPFIND request\n");
1189 }
1190
1191 free(ls.path);
1192 free(ls.dentry_name);
1193 free(url);
1194 strbuf_release(&out_buffer.buf);
1195 strbuf_release(&in_buffer);
1196 curl_slist_free_all(dav_headers);
1197 }
1198
1199 static void get_remote_object_list(unsigned char parent)
1200 {
1201 char path[] = "objects/XX/";
1202 static const char hex[] = "0123456789abcdef";
1203 unsigned int val = parent;
1204
1205 path[8] = hex[val >> 4];
1206 path[9] = hex[val & 0xf];
1207 remote_dir_exists[val] = 0;
1208 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1209 process_ls_object, &val);
1210 }
1211
1212 static int locking_available(void)
1213 {
1214 struct active_request_slot *slot;
1215 struct slot_results results;
1216 struct strbuf in_buffer = STRBUF_INIT;
1217 struct buffer out_buffer = { STRBUF_INIT, 0 };
1218 struct curl_slist *dav_headers = http_copy_default_headers();
1219 struct xml_ctx ctx;
1220 int lock_flags = 0;
1221 char *escaped;
1222
1223 escaped = xml_entities(repo->url);
1224 strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, escaped);
1225 free(escaped);
1226
1227 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1228 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1229
1230 slot = get_active_slot();
1231 slot->results = &results;
1232 curl_setup_http(slot->curl, repo->url, DAV_PROPFIND,
1233 &out_buffer, fwrite_buffer);
1234 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1235 curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &in_buffer);
1236
1237 if (start_active_slot(slot)) {
1238 run_active_slot(slot);
1239 if (results.curl_result == CURLE_OK) {
1240 XML_Parser parser = XML_ParserCreate(NULL);
1241 enum XML_Status result;
1242 ctx.name = xcalloc(10, 1);
1243 ctx.len = 0;
1244 ctx.cdata = NULL;
1245 ctx.userFunc = handle_lockprop_ctx;
1246 ctx.userData = &lock_flags;
1247 XML_SetUserData(parser, &ctx);
1248 XML_SetElementHandler(parser, xml_start_tag,
1249 xml_end_tag);
1250 result = XML_Parse(parser, in_buffer.buf,
1251 in_buffer.len, 1);
1252 free(ctx.name);
1253
1254 if (result != XML_STATUS_OK) {
1255 fprintf(stderr, "XML error: %s\n",
1256 XML_ErrorString(
1257 XML_GetErrorCode(parser)));
1258 lock_flags = 0;
1259 }
1260 XML_ParserFree(parser);
1261 if (!lock_flags)
1262 error("no DAV locking support on %s",
1263 repo->url);
1264
1265 } else {
1266 error("Cannot access URL %s, return code %d",
1267 repo->url, results.curl_result);
1268 lock_flags = 0;
1269 }
1270 } else {
1271 error("Unable to start PROPFIND request on %s", repo->url);
1272 }
1273
1274 strbuf_release(&out_buffer.buf);
1275 strbuf_release(&in_buffer);
1276 curl_slist_free_all(dav_headers);
1277
1278 return lock_flags;
1279 }
1280
1281 static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1282 {
1283 struct object_list *entry = xmalloc(sizeof(struct object_list));
1284 entry->item = obj;
1285 entry->next = *p;
1286 *p = entry;
1287 return &entry->next;
1288 }
1289
1290 static struct object_list **process_blob(struct blob *blob,
1291 struct object_list **p)
1292 {
1293 struct object *obj = &blob->object;
1294
1295 obj->flags |= LOCAL;
1296
1297 if (obj->flags & (UNINTERESTING | SEEN))
1298 return p;
1299
1300 obj->flags |= SEEN;
1301 return add_one_object(obj, p);
1302 }
1303
1304 static struct object_list **process_tree(struct tree *tree,
1305 struct object_list **p)
1306 {
1307 struct object *obj = &tree->object;
1308 struct tree_desc desc;
1309 struct name_entry entry;
1310
1311 obj->flags |= LOCAL;
1312
1313 if (obj->flags & (UNINTERESTING | SEEN))
1314 return p;
1315 if (repo_parse_tree(the_repository, tree) < 0)
1316 die("bad tree object %s", oid_to_hex(&obj->oid));
1317
1318 obj->flags |= SEEN;
1319 p = add_one_object(obj, p);
1320
1321 init_tree_desc(&desc, &tree->object.oid, tree->buffer, tree->size);
1322
1323 while (tree_entry(&desc, &entry))
1324 switch (object_type(entry.mode)) {
1325 case OBJ_TREE:
1326 p = process_tree(lookup_tree(the_repository, &entry.oid),
1327 p);
1328 break;
1329 case OBJ_BLOB:
1330 p = process_blob(lookup_blob(the_repository, &entry.oid),
1331 p);
1332 break;
1333 default:
1334 /* Subproject commit - not in this repository */
1335 break;
1336 }
1337
1338 free_tree_buffer(tree);
1339 return p;
1340 }
1341
1342 static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1343 {
1344 struct commit *commit;
1345 struct object_list **p = &objects;
1346 int count = 0;
1347
1348 while ((commit = get_revision(revs)) != NULL) {
1349 p = process_tree(repo_get_commit_tree(the_repository, commit),
1350 p);
1351 commit->object.flags |= LOCAL;
1352 if (!(commit->object.flags & UNINTERESTING))
1353 count += add_send_request(&commit->object, lock);
1354 }
1355
1356 for (size_t i = 0; i < revs->pending.nr; i++) {
1357 struct object_array_entry *entry = revs->pending.objects + i;
1358 struct object *obj = entry->item;
1359 const char *name = entry->name;
1360
1361 if (obj->flags & (UNINTERESTING | SEEN))
1362 continue;
1363 if (obj->type == OBJ_TAG) {
1364 obj->flags |= SEEN;
1365 p = add_one_object(obj, p);
1366 continue;
1367 }
1368 if (obj->type == OBJ_TREE) {
1369 p = process_tree((struct tree *)obj, p);
1370 continue;
1371 }
1372 if (obj->type == OBJ_BLOB) {
1373 p = process_blob((struct blob *)obj, p);
1374 continue;
1375 }
1376 die("unknown pending object %s (%s)", oid_to_hex(&obj->oid), name);
1377 }
1378
1379 while (objects) {
1380 struct object_list *next = objects->next;
1381
1382 if (!(objects->item->flags & UNINTERESTING))
1383 count += add_send_request(objects->item, lock);
1384
1385 free(objects);
1386 objects = next;
1387 }
1388
1389 return count;
1390 }
1391
1392 static int update_remote(const struct object_id *oid, struct remote_lock *lock)
1393 {
1394 struct active_request_slot *slot;
1395 struct slot_results results;
1396 struct buffer out_buffer = { STRBUF_INIT, 0 };
1397 struct curl_slist *dav_headers;
1398
1399 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1400
1401 strbuf_addf(&out_buffer.buf, "%s\n", oid_to_hex(oid));
1402
1403 slot = get_active_slot();
1404 slot->results = &results;
1405 curl_setup_http(slot->curl, lock->url, DAV_PUT,
1406 &out_buffer, fwrite_null);
1407 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1408
1409 if (start_active_slot(slot)) {
1410 run_active_slot(slot);
1411 strbuf_release(&out_buffer.buf);
1412 curl_slist_free_all(dav_headers);
1413 if (results.curl_result != CURLE_OK) {
1414 fprintf(stderr,
1415 "PUT error: curl result=%d, HTTP code=%ld\n",
1416 results.curl_result, results.http_code);
1417 /* We should attempt recovery? */
1418 return 0;
1419 }
1420 } else {
1421 strbuf_release(&out_buffer.buf);
1422 curl_slist_free_all(dav_headers);
1423 fprintf(stderr, "Unable to start PUT request\n");
1424 return 0;
1425 }
1426
1427 return 1;
1428 }
1429
1430 static struct ref *remote_refs;
1431
1432 static void one_remote_ref(const char *refname)
1433 {
1434 struct ref *ref;
1435 struct object *obj;
1436
1437 ref = alloc_ref(refname);
1438
1439 if (http_fetch_ref(repo->url, ref) != 0) {
1440 fprintf(stderr,
1441 "Unable to fetch ref %s from %s\n",
1442 refname, repo->url);
1443 free(ref);
1444 return;
1445 }
1446
1447 /*
1448 * Fetch a copy of the object if it doesn't exist locally - it
1449 * may be required for updating server info later.
1450 */
1451 if (repo->can_update_info_refs &&
1452 !odb_has_object(the_repository->objects, &ref->old_oid,
1453 ODB_HAS_OBJECT_RECHECK_PACKED | ODB_HAS_OBJECT_FETCH_PROMISOR)) {
1454 obj = lookup_unknown_object(the_repository, &ref->old_oid);
1455 fprintf(stderr, " fetch %s for %s\n",
1456 oid_to_hex(&ref->old_oid), refname);
1457 add_fetch_request(obj);
1458 }
1459
1460 ref->next = remote_refs;
1461 remote_refs = ref;
1462 }
1463
1464 static void get_dav_remote_heads(void)
1465 {
1466 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
1467 }
1468
1469 static void add_remote_info_ref(struct remote_ls_ctx *ls)
1470 {
1471 struct strbuf *buf = (struct strbuf *)ls->userData;
1472 struct object *o;
1473 struct ref *ref;
1474
1475 ref = alloc_ref(ls->dentry_name);
1476
1477 if (http_fetch_ref(repo->url, ref) != 0) {
1478 fprintf(stderr,
1479 "Unable to fetch ref %s from %s\n",
1480 ls->dentry_name, repo->url);
1481 aborted = 1;
1482 free(ref);
1483 return;
1484 }
1485
1486 o = parse_object(the_repository, &ref->old_oid);
1487 if (!o) {
1488 fprintf(stderr,
1489 "Unable to parse object %s for remote ref %s\n",
1490 oid_to_hex(&ref->old_oid), ls->dentry_name);
1491 aborted = 1;
1492 free(ref);
1493 return;
1494 }
1495
1496 strbuf_addf(buf, "%s\t%s\n",
1497 oid_to_hex(&ref->old_oid), ls->dentry_name);
1498
1499 if (o->type == OBJ_TAG) {
1500 o = deref_tag(the_repository, o, ls->dentry_name, 0);
1501 if (o)
1502 strbuf_addf(buf, "%s\t%s^{}\n",
1503 oid_to_hex(&o->oid), ls->dentry_name);
1504 }
1505 free(ref);
1506 }
1507
1508 static void update_remote_info_refs(struct remote_lock *lock)
1509 {
1510 struct buffer buffer = { STRBUF_INIT, 0 };
1511 struct active_request_slot *slot;
1512 struct slot_results results;
1513 struct curl_slist *dav_headers;
1514
1515 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
1516 add_remote_info_ref, &buffer.buf);
1517 if (!aborted) {
1518 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1519
1520 slot = get_active_slot();
1521 slot->results = &results;
1522 curl_setup_http(slot->curl, lock->url, DAV_PUT,
1523 &buffer, fwrite_null);
1524 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1525
1526 if (start_active_slot(slot)) {
1527 run_active_slot(slot);
1528 if (results.curl_result != CURLE_OK) {
1529 fprintf(stderr,
1530 "PUT error: curl result=%d, HTTP code=%ld\n",
1531 results.curl_result, results.http_code);
1532 }
1533 }
1534 curl_slist_free_all(dav_headers);
1535 }
1536 strbuf_release(&buffer.buf);
1537 }
1538
1539 static int remote_exists(const char *path)
1540 {
1541 char *url = xstrfmt("%s%s", repo->url, path);
1542 int ret;
1543
1544
1545 switch (http_get_strbuf(url, NULL, NULL)) {
1546 case HTTP_OK:
1547 ret = 1;
1548 break;
1549 case HTTP_MISSING_TARGET:
1550 ret = 0;
1551 break;
1552 case HTTP_ERROR:
1553 error("unable to access '%s': %s", url, curl_errorstr);
1554 /* fallthrough */
1555 default:
1556 ret = -1;
1557 }
1558 free(url);
1559 return ret;
1560 }
1561
1562 static void fetch_symref(const char *path, char **symref, struct object_id *oid)
1563 {
1564 char *url = xstrfmt("%s%s", repo->url, path);
1565 struct strbuf buffer = STRBUF_INIT;
1566 const char *name;
1567
1568 if (http_get_strbuf(url, &buffer, NULL) != HTTP_OK)
1569 die("Couldn't get %s for remote symref\n%s", url,
1570 curl_errorstr);
1571 free(url);
1572
1573 FREE_AND_NULL(*symref);
1574 oidclr(oid, the_repository->hash_algo);
1575
1576 if (buffer.len == 0)
1577 return;
1578
1579 /* Cut off trailing newline. */
1580 strbuf_rtrim(&buffer);
1581
1582 /* If it's a symref, set the refname; otherwise try for a sha1 */
1583 if (skip_prefix(buffer.buf, "ref: ", &name)) {
1584 *symref = xmemdupz(name, buffer.len - (name - buffer.buf));
1585 } else {
1586 get_oid_hex(buffer.buf, oid);
1587 }
1588
1589 strbuf_release(&buffer);
1590 }
1591
1592 static int verify_merge_base(struct object_id *head_oid, struct ref *remote)
1593 {
1594 struct commit *head = lookup_commit_or_die(head_oid, "HEAD");
1595 struct commit *branch = lookup_commit_or_die(&remote->old_oid,
1596 remote->name);
1597 int ret = repo_in_merge_bases(the_repository, branch, head);
1598
1599 if (ret < 0)
1600 exit(128);
1601 return ret;
1602 }
1603
1604 static int delete_remote_branch(const char *pattern, int force)
1605 {
1606 struct ref *refs = remote_refs;
1607 struct ref *remote_ref = NULL;
1608 struct object_id head_oid;
1609 char *symref = NULL;
1610 int match;
1611 int patlen = strlen(pattern);
1612 int i;
1613 struct active_request_slot *slot;
1614 struct slot_results results;
1615 char *url;
1616
1617 /* Find the remote branch(es) matching the specified branch name */
1618 for (match = 0; refs; refs = refs->next) {
1619 char *name = refs->name;
1620 int namelen = strlen(name);
1621 if (namelen < patlen ||
1622 memcmp(name + namelen - patlen, pattern, patlen))
1623 continue;
1624 if (namelen != patlen && name[namelen - patlen - 1] != '/')
1625 continue;
1626 match++;
1627 remote_ref = refs;
1628 }
1629 if (match == 0)
1630 return error("No remote branch matches %s", pattern);
1631 if (match != 1)
1632 return error("More than one remote branch matches %s",
1633 pattern);
1634
1635 /*
1636 * Remote HEAD must be a symref (not exactly foolproof; a remote
1637 * symlink to a symref will look like a symref)
1638 */
1639 fetch_symref("HEAD", &symref, &head_oid);
1640 if (!symref)
1641 return error("Remote HEAD is not a symref");
1642
1643 /* Remote branch must not be the remote HEAD */
1644 for (i = 0; symref && i < MAXDEPTH; i++) {
1645 if (!strcmp(remote_ref->name, symref))
1646 return error("Remote branch %s is the current HEAD",
1647 remote_ref->name);
1648 fetch_symref(symref, &symref, &head_oid);
1649 }
1650
1651 /* Run extra sanity checks if delete is not forced */
1652 if (!force) {
1653 /* Remote HEAD must resolve to a known object */
1654 if (symref)
1655 return error("Remote HEAD symrefs too deep");
1656 if (is_null_oid(&head_oid))
1657 return error("Unable to resolve remote HEAD");
1658 if (!odb_has_object(the_repository->objects, &head_oid,
1659 ODB_HAS_OBJECT_RECHECK_PACKED | ODB_HAS_OBJECT_FETCH_PROMISOR))
1660 return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", oid_to_hex(&head_oid));
1661
1662 /* Remote branch must resolve to a known object */
1663 if (is_null_oid(&remote_ref->old_oid))
1664 return error("Unable to resolve remote branch %s",
1665 remote_ref->name);
1666 if (!odb_has_object(the_repository->objects, &remote_ref->old_oid,
1667 ODB_HAS_OBJECT_RECHECK_PACKED | ODB_HAS_OBJECT_FETCH_PROMISOR))
1668 return error("Remote branch %s resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", remote_ref->name, oid_to_hex(&remote_ref->old_oid));
1669
1670 /* Remote branch must be an ancestor of remote HEAD */
1671 if (!verify_merge_base(&head_oid, remote_ref)) {
1672 return error("The branch '%s' is not an ancestor "
1673 "of your current HEAD.\n"
1674 "If you are sure you want to delete it,"
1675 " run:\n\t'git http-push -D %s %s'",
1676 remote_ref->name, repo->url, pattern);
1677 }
1678 }
1679
1680 /* Send delete request */
1681 fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
1682 if (dry_run)
1683 return 0;
1684 url = xstrfmt("%s%s", repo->url, remote_ref->name);
1685 slot = get_active_slot();
1686 slot->results = &results;
1687 curl_setup_http_get(slot->curl, url, DAV_DELETE);
1688 if (start_active_slot(slot)) {
1689 run_active_slot(slot);
1690 free(url);
1691 if (results.curl_result != CURLE_OK)
1692 return error("DELETE request failed (%d/%ld)",
1693 results.curl_result, results.http_code);
1694 } else {
1695 free(url);
1696 return error("Unable to start DELETE request");
1697 }
1698
1699 return 0;
1700 }
1701
1702 static void run_request_queue(void)
1703 {
1704 is_running_queue = 1;
1705 fill_active_slots();
1706 add_fill_function(NULL, fill_active_slot);
1707 do {
1708 finish_all_active_slots();
1709 fill_active_slots();
1710 } while (request_queue_head && !aborted);
1711
1712 is_running_queue = 0;
1713 }
1714
1715 int cmd_main(int argc, const char **argv)
1716 {
1717 struct transfer_request *request;
1718 struct transfer_request *next_request;
1719 struct refspec rs = REFSPEC_INIT_PUSH(the_hash_algo);
1720 struct remote_lock *ref_lock = NULL;
1721 struct remote_lock *info_ref_lock = NULL;
1722 int delete_branch = 0;
1723 int force_delete = 0;
1724 int objects_to_send;
1725 int rc = 0;
1726 int i;
1727 int new_refs;
1728 struct ref *ref, *local_refs = NULL;
1729 const char *gitdir;
1730
1731 CALLOC_ARRAY(repo, 1);
1732
1733 argv++;
1734 for (i = 1; i < argc; i++, argv++) {
1735 const char *arg = *argv;
1736
1737 if (*arg == '-') {
1738 if (!strcmp(arg, "--all")) {
1739 push_all = MATCH_REFS_ALL;
1740 continue;
1741 }
1742 if (!strcmp(arg, "--force")) {
1743 force_all = 1;
1744 continue;
1745 }
1746 if (!strcmp(arg, "--dry-run")) {
1747 dry_run = 1;
1748 continue;
1749 }
1750 if (!strcmp(arg, "--helper-status")) {
1751 helper_status = 1;
1752 continue;
1753 }
1754 if (!strcmp(arg, "--verbose")) {
1755 push_verbosely = 1;
1756 http_is_verbose = 1;
1757 continue;
1758 }
1759 if (!strcmp(arg, "-d")) {
1760 delete_branch = 1;
1761 continue;
1762 }
1763 if (!strcmp(arg, "-D")) {
1764 delete_branch = 1;
1765 force_delete = 1;
1766 continue;
1767 }
1768 if (!strcmp(arg, "-h"))
1769 usage(http_push_usage);
1770 }
1771 if (!repo->url) {
1772 const char *path = strstr(arg, "//");
1773 str_end_url_with_slash(arg, &repo->url);
1774 repo->path_len = strlen(repo->url);
1775 if (path) {
1776 repo->path = strchr(path+2, '/');
1777 if (repo->path)
1778 repo->path_len = strlen(repo->path);
1779 }
1780 continue;
1781 }
1782 refspec_appendn(&rs, argv, argc - i);
1783 break;
1784 }
1785
1786 if (!repo->url)
1787 usage(http_push_usage);
1788
1789 if (delete_branch && rs.nr != 1)
1790 die("You must specify only one branch name when deleting a remote branch");
1791
1792 gitdir = setup_git_directory(the_repository);
1793
1794 memset(remote_dir_exists, -1, 256);
1795
1796 http_init(NULL, repo->url, 1);
1797
1798 is_running_queue = 0;
1799
1800 /* Verify DAV compliance/lock support */
1801 if (!locking_available()) {
1802 rc = 1;
1803 goto cleanup;
1804 }
1805
1806 sigchain_push_common(remove_locks_on_signal);
1807
1808 /* Check whether the remote has server info files */
1809 repo->can_update_info_refs = 0;
1810 repo->has_info_refs = remote_exists("info/refs");
1811 repo->has_info_packs = remote_exists("objects/info/packs");
1812 if (repo->has_info_refs) {
1813 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
1814 if (info_ref_lock)
1815 repo->can_update_info_refs = 1;
1816 else {
1817 error("cannot lock existing info/refs");
1818 rc = 1;
1819 goto cleanup;
1820 }
1821 }
1822 if (repo->has_info_packs)
1823 fetch_indices();
1824
1825 /* Get a list of all local and remote heads to validate refspecs */
1826 local_refs = get_local_heads();
1827 fprintf(stderr, "Fetching remote heads...\n");
1828 get_dav_remote_heads();
1829 run_request_queue();
1830
1831 /* Remove a remote branch if -d or -D was specified */
1832 if (delete_branch) {
1833 const char *branch = rs.items[i].src;
1834 if (delete_remote_branch(branch, force_delete) == -1) {
1835 fprintf(stderr, "Unable to delete remote branch %s\n",
1836 branch);
1837 if (helper_status)
1838 printf("error %s cannot remove\n", branch);
1839 }
1840 goto cleanup;
1841 }
1842
1843 /* match them up */
1844 if (match_push_refs(local_refs, &remote_refs, &rs, push_all)) {
1845 rc = -1;
1846 goto cleanup;
1847 }
1848 if (!remote_refs) {
1849 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
1850 if (helper_status)
1851 printf("error null no match\n");
1852 rc = 0;
1853 goto cleanup;
1854 }
1855
1856 new_refs = 0;
1857 for (ref = remote_refs; ref; ref = ref->next) {
1858 struct rev_info revs;
1859 struct strvec commit_argv = STRVEC_INIT;
1860
1861 if (!ref->peer_ref)
1862 continue;
1863
1864 if (is_null_oid(&ref->peer_ref->new_oid)) {
1865 if (delete_remote_branch(ref->name, 1) == -1) {
1866 error("Could not remove %s", ref->name);
1867 if (helper_status)
1868 printf("error %s cannot remove\n", ref->name);
1869 rc = -4;
1870 }
1871 else if (helper_status)
1872 printf("ok %s\n", ref->name);
1873 new_refs++;
1874 continue;
1875 }
1876
1877 if (oideq(&ref->old_oid, &ref->peer_ref->new_oid)) {
1878 if (push_verbosely)
1879 /* stable plumbing output; do not modify or localize */
1880 fprintf(stderr, "'%s': up-to-date\n", ref->name);
1881 if (helper_status)
1882 printf("ok %s up to date\n", ref->name);
1883 continue;
1884 }
1885
1886 if (!force_all &&
1887 !is_null_oid(&ref->old_oid) &&
1888 !ref->force) {
1889 if (!odb_has_object(the_repository->objects, &ref->old_oid,
1890 ODB_HAS_OBJECT_RECHECK_PACKED | ODB_HAS_OBJECT_FETCH_PROMISOR) ||
1891 !ref_newer(&ref->peer_ref->new_oid,
1892 &ref->old_oid)) {
1893 /*
1894 * We do not have the remote ref, or
1895 * we know that the remote ref is not
1896 * an ancestor of what we are trying to
1897 * push. Either way this can be losing
1898 * commits at the remote end and likely
1899 * we were not up to date to begin with.
1900 */
1901 /* stable plumbing output; do not modify or localize */
1902 error("remote '%s' is not an ancestor of\n"
1903 "local '%s'.\n"
1904 "Maybe you are not up-to-date and "
1905 "need to pull first?",
1906 ref->name,
1907 ref->peer_ref->name);
1908 if (helper_status)
1909 printf("error %s non-fast forward\n", ref->name);
1910 rc = -2;
1911 continue;
1912 }
1913 }
1914 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
1915 new_refs++;
1916
1917 fprintf(stderr, "updating '%s'", ref->name);
1918 if (strcmp(ref->name, ref->peer_ref->name))
1919 fprintf(stderr, " using '%s'", ref->peer_ref->name);
1920 fprintf(stderr, "\n from %s\n to %s\n",
1921 oid_to_hex(&ref->old_oid), oid_to_hex(&ref->new_oid));
1922 if (dry_run) {
1923 if (helper_status)
1924 printf("ok %s\n", ref->name);
1925 continue;
1926 }
1927
1928 /* Lock remote branch ref */
1929 ref_lock = lock_remote(ref->name, LOCK_TIME);
1930 if (!ref_lock) {
1931 fprintf(stderr, "Unable to lock remote branch %s\n",
1932 ref->name);
1933 if (helper_status)
1934 printf("error %s lock error\n", ref->name);
1935 rc = 1;
1936 continue;
1937 }
1938
1939 /* Set up revision info for this refspec */
1940 strvec_push(&commit_argv, ""); /* ignored */
1941 strvec_push(&commit_argv, "--objects");
1942 strvec_push(&commit_argv, oid_to_hex(&ref->new_oid));
1943 if (!push_all && !is_null_oid(&ref->old_oid))
1944 strvec_pushf(&commit_argv, "^%s",
1945 oid_to_hex(&ref->old_oid));
1946 repo_init_revisions(the_repository, &revs, gitdir);
1947 setup_revisions_from_strvec(&commit_argv, &revs, NULL);
1948 revs.edge_hint = 0; /* just in case */
1949
1950 /* Generate a list of objects that need to be pushed */
1951 pushing = 0;
1952 if (prepare_revision_walk(&revs))
1953 die("revision walk setup failed");
1954 mark_edges_uninteresting(&revs, NULL, 0);
1955 objects_to_send = get_delta(&revs, ref_lock);
1956 finish_all_active_slots();
1957
1958 /* Push missing objects to remote, this would be a
1959 convenient time to pack them first if appropriate. */
1960 pushing = 1;
1961 if (objects_to_send)
1962 fprintf(stderr, " sending %d objects\n",
1963 objects_to_send);
1964
1965 run_request_queue();
1966
1967 /* Update the remote branch if all went well */
1968 if (aborted || !update_remote(&ref->new_oid, ref_lock))
1969 rc = 1;
1970
1971 if (!rc)
1972 fprintf(stderr, " done\n");
1973 if (helper_status)
1974 printf("%s %s\n", !rc ? "ok" : "error", ref->name);
1975 unlock_remote(ref_lock);
1976 check_locks();
1977 strvec_clear(&commit_argv);
1978 release_revisions(&revs);
1979 }
1980
1981 /* Update remote server info if appropriate */
1982 if (repo->has_info_refs && new_refs) {
1983 if (info_ref_lock && repo->can_update_info_refs) {
1984 fprintf(stderr, "Updating remote server info\n");
1985 if (!dry_run)
1986 update_remote_info_refs(info_ref_lock);
1987 } else {
1988 fprintf(stderr, "Unable to update server info\n");
1989 }
1990 }
1991
1992 cleanup:
1993 if (info_ref_lock)
1994 unlock_remote(info_ref_lock);
1995 free(repo->url);
1996 free(repo);
1997
1998 http_cleanup();
1999
2000 request = request_queue_head;
2001 while (request != NULL) {
2002 next_request = request->next;
2003 release_request(request);
2004 request = next_request;
2005 }
2006
2007 refspec_clear(&rs);
2008 free_refs(local_refs);
2009
2010 return rc;
2011 }