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Merge branch 'maint'
[git/mingw/4msysgit/kblees.git] / http-push.c
blobc9bcd116975635cabf30eceb7909abfc7f341948
1 #include "cache.h"
2 #include "commit.h"
3 #include "tag.h"
4 #include "blob.h"
5 #include "http.h"
6 #include "refs.h"
7 #include "diff.h"
8 #include "revision.h"
9 #include "exec_cmd.h"
10 #include "remote.h"
11 #include "list-objects.h"
12 #include "sigchain.h"
13
14 #include <expat.h>
15
16 static const char http_push_usage[] =
17 "git http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
18
19 #ifndef XML_STATUS_OK
20 enum XML_Status {
21 XML_STATUS_OK = 1,
22 XML_STATUS_ERROR = 0
23 };
24 #define XML_STATUS_OK 1
25 #define XML_STATUS_ERROR 0
26 #endif
27
28 #define PREV_BUF_SIZE 4096
29
30 /* DAV methods */
31 #define DAV_LOCK "LOCK"
32 #define DAV_MKCOL "MKCOL"
33 #define DAV_MOVE "MOVE"
34 #define DAV_PROPFIND "PROPFIND"
35 #define DAV_PUT "PUT"
36 #define DAV_UNLOCK "UNLOCK"
37 #define DAV_DELETE "DELETE"
38
39 /* DAV lock flags */
40 #define DAV_PROP_LOCKWR (1u << 0)
41 #define DAV_PROP_LOCKEX (1u << 1)
42 #define DAV_LOCK_OK (1u << 2)
43
44 /* DAV XML properties */
45 #define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
46 #define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
47 #define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
48 #define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
49 #define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
50 #define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
51 #define DAV_PROPFIND_RESP ".multistatus.response"
52 #define DAV_PROPFIND_NAME ".multistatus.response.href"
53 #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
54
55 /* DAV request body templates */
56 #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>"
57 #define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
58 #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>"
59
60 #define LOCK_TIME 600
61 #define LOCK_REFRESH 30
62
63 /* bits #0-15 in revision.h */
64
65 #define LOCAL (1u<<16)
66 #define REMOTE (1u<<17)
67 #define FETCHING (1u<<18)
68 #define PUSHING (1u<<19)
69
70 /* We allow "recursive" symbolic refs. Only within reason, though */
71 #define MAXDEPTH 5
72
73 static int pushing;
74 static int aborted;
75 static signed char remote_dir_exists[256];
76
77 static int push_verbosely;
78 static int push_all = MATCH_REFS_NONE;
79 static int force_all;
80 static int dry_run;
81 static int helper_status;
82
83 static struct object_list *objects;
84
85 struct repo
86 {
87 char *url;
88 char *path;
89 int path_len;
90 int has_info_refs;
91 int can_update_info_refs;
92 int has_info_packs;
93 struct packed_git *packs;
94 struct remote_lock *locks;
95 };
96
97 static struct repo *repo;
98
99 enum transfer_state {
100 NEED_FETCH,
101 RUN_FETCH_LOOSE,
102 RUN_FETCH_PACKED,
103 NEED_PUSH,
104 RUN_MKCOL,
105 RUN_PUT,
106 RUN_MOVE,
107 ABORTED,
108 COMPLETE
109 };
110
111 struct transfer_request
112 {
113 struct object *obj;
114 char *url;
115 char *dest;
116 struct remote_lock *lock;
117 struct curl_slist *headers;
118 struct buffer buffer;
119 enum transfer_state state;
120 CURLcode curl_result;
121 char errorstr[CURL_ERROR_SIZE];
122 long http_code;
123 void *userData;
124 struct active_request_slot *slot;
125 struct transfer_request *next;
126 };
127
128 static struct transfer_request *request_queue_head;
129
130 struct xml_ctx
131 {
132 char *name;
133 int len;
134 char *cdata;
135 void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
136 void *userData;
137 };
138
139 struct remote_lock
140 {
141 char *url;
142 char *owner;
143 char *token;
144 char tmpfile_suffix[41];
145 time_t start_time;
146 long timeout;
147 int refreshing;
148 struct remote_lock *next;
149 };
150
151 /* Flags that control remote_ls processing */
152 #define PROCESS_FILES (1u << 0)
153 #define PROCESS_DIRS (1u << 1)
154 #define RECURSIVE (1u << 2)
155
156 /* Flags that remote_ls passes to callback functions */
157 #define IS_DIR (1u << 0)
158
159 struct remote_ls_ctx
160 {
161 char *path;
162 void (*userFunc)(struct remote_ls_ctx *ls);
163 void *userData;
164 int flags;
165 char *dentry_name;
166 int dentry_flags;
167 struct remote_ls_ctx *parent;
168 };
169
170 /* get_dav_token_headers options */
171 enum dav_header_flag {
172 DAV_HEADER_IF = (1u << 0),
173 DAV_HEADER_LOCK = (1u << 1),
174 DAV_HEADER_TIMEOUT = (1u << 2)
175 };
176
177 static char *xml_entities(char *s)
178 {
179 struct strbuf buf = STRBUF_INIT;
180 while (*s) {
181 size_t len = strcspn(s, "\"<>&");
182 strbuf_add(&buf, s, len);
183 s += len;
184 switch (*s) {
185 case '"':
186 strbuf_addstr(&buf, "&quot;");
187 break;
188 case '<':
189 strbuf_addstr(&buf, "&lt;");
190 break;
191 case '>':
192 strbuf_addstr(&buf, "&gt;");
193 break;
194 case '&':
195 strbuf_addstr(&buf, "&amp;");
196 break;
197 case 0:
198 return strbuf_detach(&buf, NULL);
199 }
200 s++;
201 }
202 return strbuf_detach(&buf, NULL);
203 }
204
205 static struct curl_slist *get_dav_token_headers(struct remote_lock *lock, enum dav_header_flag options)
206 {
207 struct strbuf buf = STRBUF_INIT;
208 struct curl_slist *dav_headers = NULL;
209
210 if (options & DAV_HEADER_IF) {
211 strbuf_addf(&buf, "If: (<%s>)", lock->token);
212 dav_headers = curl_slist_append(dav_headers, buf.buf);
213 strbuf_reset(&buf);
214 }
215 if (options & DAV_HEADER_LOCK) {
216 strbuf_addf(&buf, "Lock-Token: <%s>", lock->token);
217 dav_headers = curl_slist_append(dav_headers, buf.buf);
218 strbuf_reset(&buf);
219 }
220 if (options & DAV_HEADER_TIMEOUT) {
221 strbuf_addf(&buf, "Timeout: Second-%ld", lock->timeout);
222 dav_headers = curl_slist_append(dav_headers, buf.buf);
223 strbuf_reset(&buf);
224 }
225 strbuf_release(&buf);
226
227 return dav_headers;
228 }
229
230 static void finish_request(struct transfer_request *request);
231 static void release_request(struct transfer_request *request);
232
233 static void process_response(void *callback_data)
234 {
235 struct transfer_request *request =
236 (struct transfer_request *)callback_data;
237
238 finish_request(request);
239 }
240
241 #ifdef USE_CURL_MULTI
242
243 static void start_fetch_loose(struct transfer_request *request)
244 {
245 struct active_request_slot *slot;
246 struct http_object_request *obj_req;
247
248 obj_req = new_http_object_request(repo->url, request->obj->sha1);
249 if (obj_req == NULL) {
250 request->state = ABORTED;
251 return;
252 }
253
254 slot = obj_req->slot;
255 slot->callback_func = process_response;
256 slot->callback_data = request;
257 request->slot = slot;
258 request->userData = obj_req;
259
260 /* Try to get the request started, abort the request on error */
261 request->state = RUN_FETCH_LOOSE;
262 if (!start_active_slot(slot)) {
263 fprintf(stderr, "Unable to start GET request\n");
264 repo->can_update_info_refs = 0;
265 release_http_object_request(obj_req);
266 release_request(request);
267 }
268 }
269
270 static void start_mkcol(struct transfer_request *request)
271 {
272 char *hex = sha1_to_hex(request->obj->sha1);
273 struct active_request_slot *slot;
274
275 request->url = get_remote_object_url(repo->url, hex, 1);
276
277 slot = get_active_slot();
278 slot->callback_func = process_response;
279 slot->callback_data = request;
280 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
281 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
282 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
283 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
284 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
285
286 if (start_active_slot(slot)) {
287 request->slot = slot;
288 request->state = RUN_MKCOL;
289 } else {
290 request->state = ABORTED;
291 free(request->url);
292 request->url = NULL;
293 }
294 }
295 #endif
296
297 static void start_fetch_packed(struct transfer_request *request)
298 {
299 struct packed_git *target;
300
301 struct transfer_request *check_request = request_queue_head;
302 struct http_pack_request *preq;
303
304 target = find_sha1_pack(request->obj->sha1, repo->packs);
305 if (!target) {
306 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
307 repo->can_update_info_refs = 0;
308 release_request(request);
309 return;
310 }
311
312 fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
313 fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
314
315 preq = new_http_pack_request(target, repo->url);
316 if (preq == NULL) {
317 release_http_pack_request(preq);
318 repo->can_update_info_refs = 0;
319 return;
320 }
321 preq->lst = &repo->packs;
322
323 /* Make sure there isn't another open request for this pack */
324 while (check_request) {
325 if (check_request->state == RUN_FETCH_PACKED &&
326 !strcmp(check_request->url, preq->url)) {
327 release_http_pack_request(preq);
328 release_request(request);
329 return;
330 }
331 check_request = check_request->next;
332 }
333
334 preq->slot->callback_func = process_response;
335 preq->slot->callback_data = request;
336 request->slot = preq->slot;
337 request->userData = preq;
338
339 /* Try to get the request started, abort the request on error */
340 request->state = RUN_FETCH_PACKED;
341 if (!start_active_slot(preq->slot)) {
342 fprintf(stderr, "Unable to start GET request\n");
343 release_http_pack_request(preq);
344 repo->can_update_info_refs = 0;
345 release_request(request);
346 }
347 }
348
349 static void start_put(struct transfer_request *request)
350 {
351 char *hex = sha1_to_hex(request->obj->sha1);
352 struct active_request_slot *slot;
353 struct strbuf buf = STRBUF_INIT;
354 enum object_type type;
355 char hdr[50];
356 void *unpacked;
357 unsigned long len;
358 int hdrlen;
359 ssize_t size;
360 z_stream stream;
361
362 unpacked = read_sha1_file(request->obj->sha1, &type, &len);
363 hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
364
365 /* Set it up */
366 memset(&stream, 0, sizeof(stream));
367 deflateInit(&stream, zlib_compression_level);
368 size = deflateBound(&stream, len + hdrlen);
369 strbuf_init(&request->buffer.buf, size);
370 request->buffer.posn = 0;
371
372 /* Compress it */
373 stream.next_out = (unsigned char *)request->buffer.buf.buf;
374 stream.avail_out = size;
375
376 /* First header.. */
377 stream.next_in = (void *)hdr;
378 stream.avail_in = hdrlen;
379 while (deflate(&stream, 0) == Z_OK)
380 /* nothing */;
381
382 /* Then the data itself.. */
383 stream.next_in = unpacked;
384 stream.avail_in = len;
385 while (deflate(&stream, Z_FINISH) == Z_OK)
386 /* nothing */;
387 deflateEnd(&stream);
388 free(unpacked);
389
390 request->buffer.buf.len = stream.total_out;
391
392 strbuf_addstr(&buf, "Destination: ");
393 append_remote_object_url(&buf, repo->url, hex, 0);
394 request->dest = strbuf_detach(&buf, NULL);
395
396 append_remote_object_url(&buf, repo->url, hex, 0);
397 strbuf_add(&buf, request->lock->tmpfile_suffix, 41);
398 request->url = strbuf_detach(&buf, NULL);
399
400 slot = get_active_slot();
401 slot->callback_func = process_response;
402 slot->callback_data = request;
403 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
404 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.buf.len);
405 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
406 #ifndef NO_CURL_IOCTL
407 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
408 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &request->buffer);
409 #endif
410 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
411 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
412 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
413 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
414 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
415 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
416
417 if (start_active_slot(slot)) {
418 request->slot = slot;
419 request->state = RUN_PUT;
420 } else {
421 request->state = ABORTED;
422 free(request->url);
423 request->url = NULL;
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 = NULL;
431
432 slot = get_active_slot();
433 slot->callback_func = process_response;
434 slot->callback_data = request;
435 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
436 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
437 dav_headers = curl_slist_append(dav_headers, request->dest);
438 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
439 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
440 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
441 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
442
443 if (start_active_slot(slot)) {
444 request->slot = slot;
445 request->state = RUN_MOVE;
446 } else {
447 request->state = ABORTED;
448 free(request->url);
449 request->url = NULL;
450 }
451 }
452
453 static int refresh_lock(struct remote_lock *lock)
454 {
455 struct active_request_slot *slot;
456 struct slot_results results;
457 struct curl_slist *dav_headers;
458 int rc = 0;
459
460 lock->refreshing = 1;
461
462 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF | DAV_HEADER_TIMEOUT);
463
464 slot = get_active_slot();
465 slot->results = &results;
466 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
467 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
468 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
469 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
470 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
471
472 if (start_active_slot(slot)) {
473 run_active_slot(slot);
474 if (results.curl_result != CURLE_OK) {
475 fprintf(stderr, "LOCK HTTP error %ld\n",
476 results.http_code);
477 } else {
478 lock->start_time = time(NULL);
479 rc = 1;
480 }
481 }
482
483 lock->refreshing = 0;
484 curl_slist_free_all(dav_headers);
485
486 return rc;
487 }
488
489 static void check_locks(void)
490 {
491 struct remote_lock *lock = repo->locks;
492 time_t current_time = time(NULL);
493 int time_remaining;
494
495 while (lock) {
496 time_remaining = lock->start_time + lock->timeout -
497 current_time;
498 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
499 if (!refresh_lock(lock)) {
500 fprintf(stderr,
501 "Unable to refresh lock for %s\n",
502 lock->url);
503 aborted = 1;
504 return;
505 }
506 }
507 lock = lock->next;
508 }
509 }
510
511 static void release_request(struct transfer_request *request)
512 {
513 struct transfer_request *entry = request_queue_head;
514
515 if (request == request_queue_head) {
516 request_queue_head = request->next;
517 } else {
518 while (entry->next != NULL && entry->next != request)
519 entry = entry->next;
520 if (entry->next == request)
521 entry->next = entry->next->next;
522 }
523
524 free(request->url);
525 free(request);
526 }
527
528 static void finish_request(struct transfer_request *request)
529 {
530 struct http_pack_request *preq;
531 struct http_object_request *obj_req;
532
533 request->curl_result = request->slot->curl_result;
534 request->http_code = request->slot->http_code;
535 request->slot = NULL;
536
537 /* Keep locks active */
538 check_locks();
539
540 if (request->headers != NULL)
541 curl_slist_free_all(request->headers);
542
543 /* URL is reused for MOVE after PUT */
544 if (request->state != RUN_PUT) {
545 free(request->url);
546 request->url = NULL;
547 }
548
549 if (request->state == RUN_MKCOL) {
550 if (request->curl_result == CURLE_OK ||
551 request->http_code == 405) {
552 remote_dir_exists[request->obj->sha1[0]] = 1;
553 start_put(request);
554 } else {
555 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
556 sha1_to_hex(request->obj->sha1),
557 request->curl_result, request->http_code);
558 request->state = ABORTED;
559 aborted = 1;
560 }
561 } else if (request->state == RUN_PUT) {
562 if (request->curl_result == CURLE_OK) {
563 start_move(request);
564 } else {
565 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
566 sha1_to_hex(request->obj->sha1),
567 request->curl_result, request->http_code);
568 request->state = ABORTED;
569 aborted = 1;
570 }
571 } else if (request->state == RUN_MOVE) {
572 if (request->curl_result == CURLE_OK) {
573 if (push_verbosely)
574 fprintf(stderr, " sent %s\n",
575 sha1_to_hex(request->obj->sha1));
576 request->obj->flags |= REMOTE;
577 release_request(request);
578 } else {
579 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
580 sha1_to_hex(request->obj->sha1),
581 request->curl_result, request->http_code);
582 request->state = ABORTED;
583 aborted = 1;
584 }
585 } else if (request->state == RUN_FETCH_LOOSE) {
586 obj_req = (struct http_object_request *)request->userData;
587
588 if (finish_http_object_request(obj_req) == 0)
589 if (obj_req->rename == 0)
590 request->obj->flags |= (LOCAL | REMOTE);
591
592 /* Try fetching packed if necessary */
593 if (request->obj->flags & LOCAL) {
594 release_http_object_request(obj_req);
595 release_request(request);
596 } else
597 start_fetch_packed(request);
598
599 } else if (request->state == RUN_FETCH_PACKED) {
600 int fail = 1;
601 if (request->curl_result != CURLE_OK) {
602 fprintf(stderr, "Unable to get pack file %s\n%s",
603 request->url, curl_errorstr);
604 } else {
605 preq = (struct http_pack_request *)request->userData;
606
607 if (preq) {
608 if (finish_http_pack_request(preq) == 0)
609 fail = 0;
610 release_http_pack_request(preq);
611 }
612 }
613 if (fail)
614 repo->can_update_info_refs = 0;
615 release_request(request);
616 }
617 }
618
619 #ifdef USE_CURL_MULTI
620 static int is_running_queue;
621 static int fill_active_slot(void *unused)
622 {
623 struct transfer_request *request;
624
625 if (aborted || !is_running_queue)
626 return 0;
627
628 for (request = request_queue_head; request; request = request->next) {
629 if (request->state == NEED_FETCH) {
630 start_fetch_loose(request);
631 return 1;
632 } else if (pushing && request->state == NEED_PUSH) {
633 if (remote_dir_exists[request->obj->sha1[0]] == 1) {
634 start_put(request);
635 } else {
636 start_mkcol(request);
637 }
638 return 1;
639 }
640 }
641 return 0;
642 }
643 #endif
644
645 static void get_remote_object_list(unsigned char parent);
646
647 static void add_fetch_request(struct object *obj)
648 {
649 struct transfer_request *request;
650
651 check_locks();
652
653 /*
654 * Don't fetch the object if it's known to exist locally
655 * or is already in the request queue
656 */
657 if (remote_dir_exists[obj->sha1[0]] == -1)
658 get_remote_object_list(obj->sha1[0]);
659 if (obj->flags & (LOCAL | FETCHING))
660 return;
661
662 obj->flags |= FETCHING;
663 request = xmalloc(sizeof(*request));
664 request->obj = obj;
665 request->url = NULL;
666 request->lock = NULL;
667 request->headers = NULL;
668 request->state = NEED_FETCH;
669 request->next = request_queue_head;
670 request_queue_head = request;
671
672 #ifdef USE_CURL_MULTI
673 fill_active_slots();
674 step_active_slots();
675 #endif
676 }
677
678 static int add_send_request(struct object *obj, struct remote_lock *lock)
679 {
680 struct transfer_request *request = request_queue_head;
681 struct packed_git *target;
682
683 /* Keep locks active */
684 check_locks();
685
686 /*
687 * Don't push the object if it's known to exist on the remote
688 * or is already in the request queue
689 */
690 if (remote_dir_exists[obj->sha1[0]] == -1)
691 get_remote_object_list(obj->sha1[0]);
692 if (obj->flags & (REMOTE | PUSHING))
693 return 0;
694 target = find_sha1_pack(obj->sha1, repo->packs);
695 if (target) {
696 obj->flags |= REMOTE;
697 return 0;
698 }
699
700 obj->flags |= PUSHING;
701 request = xmalloc(sizeof(*request));
702 request->obj = obj;
703 request->url = NULL;
704 request->lock = lock;
705 request->headers = NULL;
706 request->state = NEED_PUSH;
707 request->next = request_queue_head;
708 request_queue_head = request;
709
710 #ifdef USE_CURL_MULTI
711 fill_active_slots();
712 step_active_slots();
713 #endif
714
715 return 1;
716 }
717
718 static int fetch_indices(void)
719 {
720 int ret;
721
722 if (push_verbosely)
723 fprintf(stderr, "Getting pack list\n");
724
725 switch (http_get_info_packs(repo->url, &repo->packs)) {
726 case HTTP_OK:
727 case HTTP_MISSING_TARGET:
728 ret = 0;
729 break;
730 default:
731 ret = -1;
732 }
733
734 return ret;
735 }
736
737 static void one_remote_object(const char *hex)
738 {
739 unsigned char sha1[20];
740 struct object *obj;
741
742 if (get_sha1_hex(hex, sha1) != 0)
743 return;
744
745 obj = lookup_object(sha1);
746 if (!obj)
747 obj = parse_object(sha1);
748
749 /* Ignore remote objects that don't exist locally */
750 if (!obj)
751 return;
752
753 obj->flags |= REMOTE;
754 if (!object_list_contains(objects, obj))
755 object_list_insert(obj, &objects);
756 }
757
758 static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
759 {
760 int *lock_flags = (int *)ctx->userData;
761
762 if (tag_closed) {
763 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
764 if ((*lock_flags & DAV_PROP_LOCKEX) &&
765 (*lock_flags & DAV_PROP_LOCKWR)) {
766 *lock_flags |= DAV_LOCK_OK;
767 }
768 *lock_flags &= DAV_LOCK_OK;
769 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
770 *lock_flags |= DAV_PROP_LOCKWR;
771 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
772 *lock_flags |= DAV_PROP_LOCKEX;
773 }
774 }
775 }
776
777 static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
778 {
779 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
780 git_SHA_CTX sha_ctx;
781 unsigned char lock_token_sha1[20];
782
783 if (tag_closed && ctx->cdata) {
784 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
785 lock->owner = xmalloc(strlen(ctx->cdata) + 1);
786 strcpy(lock->owner, ctx->cdata);
787 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
788 if (!prefixcmp(ctx->cdata, "Second-"))
789 lock->timeout =
790 strtol(ctx->cdata + 7, NULL, 10);
791 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
792 lock->token = xmalloc(strlen(ctx->cdata) + 1);
793 strcpy(lock->token, ctx->cdata);
794
795 git_SHA1_Init(&sha_ctx);
796 git_SHA1_Update(&sha_ctx, lock->token, strlen(lock->token));
797 git_SHA1_Final(lock_token_sha1, &sha_ctx);
798
799 lock->tmpfile_suffix[0] = '_';
800 memcpy(lock->tmpfile_suffix + 1, sha1_to_hex(lock_token_sha1), 40);
801 }
802 }
803 }
804
805 static void one_remote_ref(char *refname);
806
807 static void
808 xml_start_tag(void *userData, const char *name, const char **atts)
809 {
810 struct xml_ctx *ctx = (struct xml_ctx *)userData;
811 const char *c = strchr(name, ':');
812 int new_len;
813
814 if (c == NULL)
815 c = name;
816 else
817 c++;
818
819 new_len = strlen(ctx->name) + strlen(c) + 2;
820
821 if (new_len > ctx->len) {
822 ctx->name = xrealloc(ctx->name, new_len);
823 ctx->len = new_len;
824 }
825 strcat(ctx->name, ".");
826 strcat(ctx->name, c);
827
828 free(ctx->cdata);
829 ctx->cdata = NULL;
830
831 ctx->userFunc(ctx, 0);
832 }
833
834 static void
835 xml_end_tag(void *userData, const char *name)
836 {
837 struct xml_ctx *ctx = (struct xml_ctx *)userData;
838 const char *c = strchr(name, ':');
839 char *ep;
840
841 ctx->userFunc(ctx, 1);
842
843 if (c == NULL)
844 c = name;
845 else
846 c++;
847
848 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
849 *ep = 0;
850 }
851
852 static void
853 xml_cdata(void *userData, const XML_Char *s, int len)
854 {
855 struct xml_ctx *ctx = (struct xml_ctx *)userData;
856 free(ctx->cdata);
857 ctx->cdata = xmemdupz(s, len);
858 }
859
860 static struct remote_lock *lock_remote(const char *path, long timeout)
861 {
862 struct active_request_slot *slot;
863 struct slot_results results;
864 struct buffer out_buffer = { STRBUF_INIT, 0 };
865 struct strbuf in_buffer = STRBUF_INIT;
866 char *url;
867 char *ep;
868 char timeout_header[25];
869 struct remote_lock *lock = NULL;
870 struct curl_slist *dav_headers = NULL;
871 struct xml_ctx ctx;
872 char *escaped;
873
874 url = xmalloc(strlen(repo->url) + strlen(path) + 1);
875 sprintf(url, "%s%s", repo->url, path);
876
877 /* Make sure leading directories exist for the remote ref */
878 ep = strchr(url + strlen(repo->url) + 1, '/');
879 while (ep) {
880 char saved_character = ep[1];
881 ep[1] = '\0';
882 slot = get_active_slot();
883 slot->results = &results;
884 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
885 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
886 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
887 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
888 if (start_active_slot(slot)) {
889 run_active_slot(slot);
890 if (results.curl_result != CURLE_OK &&
891 results.http_code != 405) {
892 fprintf(stderr,
893 "Unable to create branch path %s\n",
894 url);
895 free(url);
896 return NULL;
897 }
898 } else {
899 fprintf(stderr, "Unable to start MKCOL request\n");
900 free(url);
901 return NULL;
902 }
903 ep[1] = saved_character;
904 ep = strchr(ep + 1, '/');
905 }
906
907 escaped = xml_entities(git_default_email);
908 strbuf_addf(&out_buffer.buf, LOCK_REQUEST, escaped);
909 free(escaped);
910
911 sprintf(timeout_header, "Timeout: Second-%ld", timeout);
912 dav_headers = curl_slist_append(dav_headers, timeout_header);
913 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
914
915 slot = get_active_slot();
916 slot->results = &results;
917 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
918 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
919 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
920 #ifndef NO_CURL_IOCTL
921 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
922 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
923 #endif
924 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
925 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
926 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
927 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
928 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
929 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
930
931 lock = xcalloc(1, sizeof(*lock));
932 lock->timeout = -1;
933
934 if (start_active_slot(slot)) {
935 run_active_slot(slot);
936 if (results.curl_result == CURLE_OK) {
937 XML_Parser parser = XML_ParserCreate(NULL);
938 enum XML_Status result;
939 ctx.name = xcalloc(10, 1);
940 ctx.len = 0;
941 ctx.cdata = NULL;
942 ctx.userFunc = handle_new_lock_ctx;
943 ctx.userData = lock;
944 XML_SetUserData(parser, &ctx);
945 XML_SetElementHandler(parser, xml_start_tag,
946 xml_end_tag);
947 XML_SetCharacterDataHandler(parser, xml_cdata);
948 result = XML_Parse(parser, in_buffer.buf,
949 in_buffer.len, 1);
950 free(ctx.name);
951 if (result != XML_STATUS_OK) {
952 fprintf(stderr, "XML error: %s\n",
953 XML_ErrorString(
954 XML_GetErrorCode(parser)));
955 lock->timeout = -1;
956 }
957 XML_ParserFree(parser);
958 }
959 } else {
960 fprintf(stderr, "Unable to start LOCK request\n");
961 }
962
963 curl_slist_free_all(dav_headers);
964 strbuf_release(&out_buffer.buf);
965 strbuf_release(&in_buffer);
966
967 if (lock->token == NULL || lock->timeout <= 0) {
968 free(lock->token);
969 free(lock->owner);
970 free(url);
971 free(lock);
972 lock = NULL;
973 } else {
974 lock->url = url;
975 lock->start_time = time(NULL);
976 lock->next = repo->locks;
977 repo->locks = lock;
978 }
979
980 return lock;
981 }
982
983 static int unlock_remote(struct remote_lock *lock)
984 {
985 struct active_request_slot *slot;
986 struct slot_results results;
987 struct remote_lock *prev = repo->locks;
988 struct curl_slist *dav_headers;
989 int rc = 0;
990
991 dav_headers = get_dav_token_headers(lock, DAV_HEADER_LOCK);
992
993 slot = get_active_slot();
994 slot->results = &results;
995 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
996 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
997 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
998 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
999
1000 if (start_active_slot(slot)) {
1001 run_active_slot(slot);
1002 if (results.curl_result == CURLE_OK)
1003 rc = 1;
1004 else
1005 fprintf(stderr, "UNLOCK HTTP error %ld\n",
1006 results.http_code);
1007 } else {
1008 fprintf(stderr, "Unable to start UNLOCK request\n");
1009 }
1010
1011 curl_slist_free_all(dav_headers);
1012
1013 if (repo->locks == lock) {
1014 repo->locks = lock->next;
1015 } else {
1016 while (prev && prev->next != lock)
1017 prev = prev->next;
1018 if (prev)
1019 prev->next = prev->next->next;
1020 }
1021
1022 free(lock->owner);
1023 free(lock->url);
1024 free(lock->token);
1025 free(lock);
1026
1027 return rc;
1028 }
1029
1030 static void remove_locks(void)
1031 {
1032 struct remote_lock *lock = repo->locks;
1033
1034 fprintf(stderr, "Removing remote locks...\n");
1035 while (lock) {
1036 struct remote_lock *next = lock->next;
1037 unlock_remote(lock);
1038 lock = next;
1039 }
1040 }
1041
1042 static void remove_locks_on_signal(int signo)
1043 {
1044 remove_locks();
1045 sigchain_pop(signo);
1046 raise(signo);
1047 }
1048
1049 static void remote_ls(const char *path, int flags,
1050 void (*userFunc)(struct remote_ls_ctx *ls),
1051 void *userData);
1052
1053 static void process_ls_object(struct remote_ls_ctx *ls)
1054 {
1055 unsigned int *parent = (unsigned int *)ls->userData;
1056 char *path = ls->dentry_name;
1057 char *obj_hex;
1058
1059 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1060 remote_dir_exists[*parent] = 1;
1061 return;
1062 }
1063
1064 if (strlen(path) != 49)
1065 return;
1066 path += 8;
1067 obj_hex = xmalloc(strlen(path));
1068 /* NB: path is not null-terminated, can not use strlcpy here */
1069 memcpy(obj_hex, path, 2);
1070 strcpy(obj_hex + 2, path + 3);
1071 one_remote_object(obj_hex);
1072 free(obj_hex);
1073 }
1074
1075 static void process_ls_ref(struct remote_ls_ctx *ls)
1076 {
1077 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1078 fprintf(stderr, " %s\n", ls->dentry_name);
1079 return;
1080 }
1081
1082 if (!(ls->dentry_flags & IS_DIR))
1083 one_remote_ref(ls->dentry_name);
1084 }
1085
1086 static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1087 {
1088 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
1089
1090 if (tag_closed) {
1091 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1092 if (ls->dentry_flags & IS_DIR) {
1093 if (ls->flags & PROCESS_DIRS) {
1094 ls->userFunc(ls);
1095 }
1096 if (strcmp(ls->dentry_name, ls->path) &&
1097 ls->flags & RECURSIVE) {
1098 remote_ls(ls->dentry_name,
1099 ls->flags,
1100 ls->userFunc,
1101 ls->userData);
1102 }
1103 } else if (ls->flags & PROCESS_FILES) {
1104 ls->userFunc(ls);
1105 }
1106 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1107 char *path = ctx->cdata;
1108 if (*ctx->cdata == 'h') {
1109 path = strstr(path, "//");
1110 if (path) {
1111 path = strchr(path+2, '/');
1112 }
1113 }
1114 if (path) {
1115 path += repo->path_len;
1116 ls->dentry_name = xstrdup(path);
1117 }
1118 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1119 ls->dentry_flags |= IS_DIR;
1120 }
1121 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1122 free(ls->dentry_name);
1123 ls->dentry_name = NULL;
1124 ls->dentry_flags = 0;
1125 }
1126 }
1127
1128 /*
1129 * NEEDSWORK: remote_ls() ignores info/refs on the remote side. But it
1130 * should _only_ heed the information from that file, instead of trying to
1131 * determine the refs from the remote file system (badly: it does not even
1132 * know about packed-refs).
1133 */
1134 static void remote_ls(const char *path, int flags,
1135 void (*userFunc)(struct remote_ls_ctx *ls),
1136 void *userData)
1137 {
1138 char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1139 struct active_request_slot *slot;
1140 struct slot_results results;
1141 struct strbuf in_buffer = STRBUF_INIT;
1142 struct buffer out_buffer = { STRBUF_INIT, 0 };
1143 struct curl_slist *dav_headers = NULL;
1144 struct xml_ctx ctx;
1145 struct remote_ls_ctx ls;
1146
1147 ls.flags = flags;
1148 ls.path = xstrdup(path);
1149 ls.dentry_name = NULL;
1150 ls.dentry_flags = 0;
1151 ls.userData = userData;
1152 ls.userFunc = userFunc;
1153
1154 sprintf(url, "%s%s", repo->url, path);
1155
1156 strbuf_addf(&out_buffer.buf, PROPFIND_ALL_REQUEST);
1157
1158 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1159 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1160
1161 slot = get_active_slot();
1162 slot->results = &results;
1163 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1164 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1165 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1166 #ifndef NO_CURL_IOCTL
1167 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1168 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1169 #endif
1170 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1171 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1172 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1173 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1174 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1175 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1176
1177 if (start_active_slot(slot)) {
1178 run_active_slot(slot);
1179 if (results.curl_result == CURLE_OK) {
1180 XML_Parser parser = XML_ParserCreate(NULL);
1181 enum XML_Status result;
1182 ctx.name = xcalloc(10, 1);
1183 ctx.len = 0;
1184 ctx.cdata = NULL;
1185 ctx.userFunc = handle_remote_ls_ctx;
1186 ctx.userData = &ls;
1187 XML_SetUserData(parser, &ctx);
1188 XML_SetElementHandler(parser, xml_start_tag,
1189 xml_end_tag);
1190 XML_SetCharacterDataHandler(parser, xml_cdata);
1191 result = XML_Parse(parser, in_buffer.buf,
1192 in_buffer.len, 1);
1193 free(ctx.name);
1194
1195 if (result != XML_STATUS_OK) {
1196 fprintf(stderr, "XML error: %s\n",
1197 XML_ErrorString(
1198 XML_GetErrorCode(parser)));
1199 }
1200 XML_ParserFree(parser);
1201 }
1202 } else {
1203 fprintf(stderr, "Unable to start PROPFIND request\n");
1204 }
1205
1206 free(ls.path);
1207 free(url);
1208 strbuf_release(&out_buffer.buf);
1209 strbuf_release(&in_buffer);
1210 curl_slist_free_all(dav_headers);
1211 }
1212
1213 static void get_remote_object_list(unsigned char parent)
1214 {
1215 char path[] = "objects/XX/";
1216 static const char hex[] = "0123456789abcdef";
1217 unsigned int val = parent;
1218
1219 path[8] = hex[val >> 4];
1220 path[9] = hex[val & 0xf];
1221 remote_dir_exists[val] = 0;
1222 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1223 process_ls_object, &val);
1224 }
1225
1226 static int locking_available(void)
1227 {
1228 struct active_request_slot *slot;
1229 struct slot_results results;
1230 struct strbuf in_buffer = STRBUF_INIT;
1231 struct buffer out_buffer = { STRBUF_INIT, 0 };
1232 struct curl_slist *dav_headers = NULL;
1233 struct xml_ctx ctx;
1234 int lock_flags = 0;
1235 char *escaped;
1236
1237 escaped = xml_entities(repo->url);
1238 strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, escaped);
1239 free(escaped);
1240
1241 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1242 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1243
1244 slot = get_active_slot();
1245 slot->results = &results;
1246 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1247 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1248 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1249 #ifndef NO_CURL_IOCTL
1250 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1251 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1252 #endif
1253 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1254 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1255 curl_easy_setopt(slot->curl, CURLOPT_URL, repo->url);
1256 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1257 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1258 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1259
1260 if (start_active_slot(slot)) {
1261 run_active_slot(slot);
1262 if (results.curl_result == CURLE_OK) {
1263 XML_Parser parser = XML_ParserCreate(NULL);
1264 enum XML_Status result;
1265 ctx.name = xcalloc(10, 1);
1266 ctx.len = 0;
1267 ctx.cdata = NULL;
1268 ctx.userFunc = handle_lockprop_ctx;
1269 ctx.userData = &lock_flags;
1270 XML_SetUserData(parser, &ctx);
1271 XML_SetElementHandler(parser, xml_start_tag,
1272 xml_end_tag);
1273 result = XML_Parse(parser, in_buffer.buf,
1274 in_buffer.len, 1);
1275 free(ctx.name);
1276
1277 if (result != XML_STATUS_OK) {
1278 fprintf(stderr, "XML error: %s\n",
1279 XML_ErrorString(
1280 XML_GetErrorCode(parser)));
1281 lock_flags = 0;
1282 }
1283 XML_ParserFree(parser);
1284 if (!lock_flags)
1285 error("no DAV locking support on %s",
1286 repo->url);
1287
1288 } else {
1289 error("Cannot access URL %s, return code %d",
1290 repo->url, results.curl_result);
1291 lock_flags = 0;
1292 }
1293 } else {
1294 error("Unable to start PROPFIND request on %s", repo->url);
1295 }
1296
1297 strbuf_release(&out_buffer.buf);
1298 strbuf_release(&in_buffer);
1299 curl_slist_free_all(dav_headers);
1300
1301 return lock_flags;
1302 }
1303
1304 static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1305 {
1306 struct object_list *entry = xmalloc(sizeof(struct object_list));
1307 entry->item = obj;
1308 entry->next = *p;
1309 *p = entry;
1310 return &entry->next;
1311 }
1312
1313 static struct object_list **process_blob(struct blob *blob,
1314 struct object_list **p,
1315 struct name_path *path,
1316 const char *name)
1317 {
1318 struct object *obj = &blob->object;
1319
1320 obj->flags |= LOCAL;
1321
1322 if (obj->flags & (UNINTERESTING | SEEN))
1323 return p;
1324
1325 obj->flags |= SEEN;
1326 return add_one_object(obj, p);
1327 }
1328
1329 static struct object_list **process_tree(struct tree *tree,
1330 struct object_list **p,
1331 struct name_path *path,
1332 const char *name)
1333 {
1334 struct object *obj = &tree->object;
1335 struct tree_desc desc;
1336 struct name_entry entry;
1337 struct name_path me;
1338
1339 obj->flags |= LOCAL;
1340
1341 if (obj->flags & (UNINTERESTING | SEEN))
1342 return p;
1343 if (parse_tree(tree) < 0)
1344 die("bad tree object %s", sha1_to_hex(obj->sha1));
1345
1346 obj->flags |= SEEN;
1347 name = xstrdup(name);
1348 p = add_one_object(obj, p);
1349 me.up = path;
1350 me.elem = name;
1351 me.elem_len = strlen(name);
1352
1353 init_tree_desc(&desc, tree->buffer, tree->size);
1354
1355 while (tree_entry(&desc, &entry))
1356 switch (object_type(entry.mode)) {
1357 case OBJ_TREE:
1358 p = process_tree(lookup_tree(entry.sha1), p, &me, name);
1359 break;
1360 case OBJ_BLOB:
1361 p = process_blob(lookup_blob(entry.sha1), p, &me, name);
1362 break;
1363 default:
1364 /* Subproject commit - not in this repository */
1365 break;
1366 }
1367
1368 free(tree->buffer);
1369 tree->buffer = NULL;
1370 return p;
1371 }
1372
1373 static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1374 {
1375 int i;
1376 struct commit *commit;
1377 struct object_list **p = &objects;
1378 int count = 0;
1379
1380 while ((commit = get_revision(revs)) != NULL) {
1381 p = process_tree(commit->tree, p, NULL, "");
1382 commit->object.flags |= LOCAL;
1383 if (!(commit->object.flags & UNINTERESTING))
1384 count += add_send_request(&commit->object, lock);
1385 }
1386
1387 for (i = 0; i < revs->pending.nr; i++) {
1388 struct object_array_entry *entry = revs->pending.objects + i;
1389 struct object *obj = entry->item;
1390 const char *name = entry->name;
1391
1392 if (obj->flags & (UNINTERESTING | SEEN))
1393 continue;
1394 if (obj->type == OBJ_TAG) {
1395 obj->flags |= SEEN;
1396 p = add_one_object(obj, p);
1397 continue;
1398 }
1399 if (obj->type == OBJ_TREE) {
1400 p = process_tree((struct tree *)obj, p, NULL, name);
1401 continue;
1402 }
1403 if (obj->type == OBJ_BLOB) {
1404 p = process_blob((struct blob *)obj, p, NULL, name);
1405 continue;
1406 }
1407 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1408 }
1409
1410 while (objects) {
1411 if (!(objects->item->flags & UNINTERESTING))
1412 count += add_send_request(objects->item, lock);
1413 objects = objects->next;
1414 }
1415
1416 return count;
1417 }
1418
1419 static int update_remote(unsigned char *sha1, struct remote_lock *lock)
1420 {
1421 struct active_request_slot *slot;
1422 struct slot_results results;
1423 struct buffer out_buffer = { STRBUF_INIT, 0 };
1424 struct curl_slist *dav_headers;
1425
1426 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1427
1428 strbuf_addf(&out_buffer.buf, "%s\n", sha1_to_hex(sha1));
1429
1430 slot = get_active_slot();
1431 slot->results = &results;
1432 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1433 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1434 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1435 #ifndef NO_CURL_IOCTL
1436 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1437 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1438 #endif
1439 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1440 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1441 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1442 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1443 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1444 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1445
1446 if (start_active_slot(slot)) {
1447 run_active_slot(slot);
1448 strbuf_release(&out_buffer.buf);
1449 if (results.curl_result != CURLE_OK) {
1450 fprintf(stderr,
1451 "PUT error: curl result=%d, HTTP code=%ld\n",
1452 results.curl_result, results.http_code);
1453 /* We should attempt recovery? */
1454 return 0;
1455 }
1456 } else {
1457 strbuf_release(&out_buffer.buf);
1458 fprintf(stderr, "Unable to start PUT request\n");
1459 return 0;
1460 }
1461
1462 return 1;
1463 }
1464
1465 static struct ref *remote_refs;
1466
1467 static void one_remote_ref(char *refname)
1468 {
1469 struct ref *ref;
1470 struct object *obj;
1471
1472 ref = alloc_ref(refname);
1473
1474 if (http_fetch_ref(repo->url, ref) != 0) {
1475 fprintf(stderr,
1476 "Unable to fetch ref %s from %s\n",
1477 refname, repo->url);
1478 free(ref);
1479 return;
1480 }
1481
1482 /*
1483 * Fetch a copy of the object if it doesn't exist locally - it
1484 * may be required for updating server info later.
1485 */
1486 if (repo->can_update_info_refs && !has_sha1_file(ref->old_sha1)) {
1487 obj = lookup_unknown_object(ref->old_sha1);
1488 if (obj) {
1489 fprintf(stderr, " fetch %s for %s\n",
1490 sha1_to_hex(ref->old_sha1), refname);
1491 add_fetch_request(obj);
1492 }
1493 }
1494
1495 ref->next = remote_refs;
1496 remote_refs = ref;
1497 }
1498
1499 static void get_dav_remote_heads(void)
1500 {
1501 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
1502 }
1503
1504 static void add_remote_info_ref(struct remote_ls_ctx *ls)
1505 {
1506 struct strbuf *buf = (struct strbuf *)ls->userData;
1507 struct object *o;
1508 int len;
1509 char *ref_info;
1510 struct ref *ref;
1511
1512 ref = alloc_ref(ls->dentry_name);
1513
1514 if (http_fetch_ref(repo->url, ref) != 0) {
1515 fprintf(stderr,
1516 "Unable to fetch ref %s from %s\n",
1517 ls->dentry_name, repo->url);
1518 aborted = 1;
1519 free(ref);
1520 return;
1521 }
1522
1523 o = parse_object(ref->old_sha1);
1524 if (!o) {
1525 fprintf(stderr,
1526 "Unable to parse object %s for remote ref %s\n",
1527 sha1_to_hex(ref->old_sha1), ls->dentry_name);
1528 aborted = 1;
1529 free(ref);
1530 return;
1531 }
1532
1533 len = strlen(ls->dentry_name) + 42;
1534 ref_info = xcalloc(len + 1, 1);
1535 sprintf(ref_info, "%s %s\n",
1536 sha1_to_hex(ref->old_sha1), ls->dentry_name);
1537 fwrite_buffer(ref_info, 1, len, buf);
1538 free(ref_info);
1539
1540 if (o->type == OBJ_TAG) {
1541 o = deref_tag(o, ls->dentry_name, 0);
1542 if (o) {
1543 len = strlen(ls->dentry_name) + 45;
1544 ref_info = xcalloc(len + 1, 1);
1545 sprintf(ref_info, "%s %s^{}\n",
1546 sha1_to_hex(o->sha1), ls->dentry_name);
1547 fwrite_buffer(ref_info, 1, len, buf);
1548 free(ref_info);
1549 }
1550 }
1551 free(ref);
1552 }
1553
1554 static void update_remote_info_refs(struct remote_lock *lock)
1555 {
1556 struct buffer buffer = { STRBUF_INIT, 0 };
1557 struct active_request_slot *slot;
1558 struct slot_results results;
1559 struct curl_slist *dav_headers;
1560
1561 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
1562 add_remote_info_ref, &buffer.buf);
1563 if (!aborted) {
1564 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1565
1566 slot = get_active_slot();
1567 slot->results = &results;
1568 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
1569 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.buf.len);
1570 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1571 #ifndef NO_CURL_IOCTL
1572 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1573 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &buffer);
1574 #endif
1575 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1576 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1577 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1578 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1579 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1580 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1581
1582 if (start_active_slot(slot)) {
1583 run_active_slot(slot);
1584 if (results.curl_result != CURLE_OK) {
1585 fprintf(stderr,
1586 "PUT error: curl result=%d, HTTP code=%ld\n",
1587 results.curl_result, results.http_code);
1588 }
1589 }
1590 }
1591 strbuf_release(&buffer.buf);
1592 }
1593
1594 static int remote_exists(const char *path)
1595 {
1596 char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1597 int ret;
1598
1599 sprintf(url, "%s%s", repo->url, path);
1600
1601 switch (http_get_strbuf(url, NULL, 0)) {
1602 case HTTP_OK:
1603 ret = 1;
1604 break;
1605 case HTTP_MISSING_TARGET:
1606 ret = 0;
1607 break;
1608 case HTTP_ERROR:
1609 http_error(url, HTTP_ERROR);
1610 default:
1611 ret = -1;
1612 }
1613 free(url);
1614 return ret;
1615 }
1616
1617 static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
1618 {
1619 char *url;
1620 struct strbuf buffer = STRBUF_INIT;
1621
1622 url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1623 sprintf(url, "%s%s", repo->url, path);
1624
1625 if (http_get_strbuf(url, &buffer, 0) != HTTP_OK)
1626 die("Couldn't get %s for remote symref\n%s", url,
1627 curl_errorstr);
1628 free(url);
1629
1630 free(*symref);
1631 *symref = NULL;
1632 hashclr(sha1);
1633
1634 if (buffer.len == 0)
1635 return;
1636
1637 /* If it's a symref, set the refname; otherwise try for a sha1 */
1638 if (!prefixcmp((char *)buffer.buf, "ref: ")) {
1639 *symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6);
1640 } else {
1641 get_sha1_hex(buffer.buf, sha1);
1642 }
1643
1644 strbuf_release(&buffer);
1645 }
1646
1647 static int verify_merge_base(unsigned char *head_sha1, unsigned char *branch_sha1)
1648 {
1649 struct commit *head = lookup_commit(head_sha1);
1650 struct commit *branch = lookup_commit(branch_sha1);
1651 struct commit_list *merge_bases = get_merge_bases(head, branch, 1);
1652
1653 return (merge_bases && !merge_bases->next && merge_bases->item == branch);
1654 }
1655
1656 static int delete_remote_branch(char *pattern, int force)
1657 {
1658 struct ref *refs = remote_refs;
1659 struct ref *remote_ref = NULL;
1660 unsigned char head_sha1[20];
1661 char *symref = NULL;
1662 int match;
1663 int patlen = strlen(pattern);
1664 int i;
1665 struct active_request_slot *slot;
1666 struct slot_results results;
1667 char *url;
1668
1669 /* Find the remote branch(es) matching the specified branch name */
1670 for (match = 0; refs; refs = refs->next) {
1671 char *name = refs->name;
1672 int namelen = strlen(name);
1673 if (namelen < patlen ||
1674 memcmp(name + namelen - patlen, pattern, patlen))
1675 continue;
1676 if (namelen != patlen && name[namelen - patlen - 1] != '/')
1677 continue;
1678 match++;
1679 remote_ref = refs;
1680 }
1681 if (match == 0)
1682 return error("No remote branch matches %s", pattern);
1683 if (match != 1)
1684 return error("More than one remote branch matches %s",
1685 pattern);
1686
1687 /*
1688 * Remote HEAD must be a symref (not exactly foolproof; a remote
1689 * symlink to a symref will look like a symref)
1690 */
1691 fetch_symref("HEAD", &symref, head_sha1);
1692 if (!symref)
1693 return error("Remote HEAD is not a symref");
1694
1695 /* Remote branch must not be the remote HEAD */
1696 for (i=0; symref && i<MAXDEPTH; i++) {
1697 if (!strcmp(remote_ref->name, symref))
1698 return error("Remote branch %s is the current HEAD",
1699 remote_ref->name);
1700 fetch_symref(symref, &symref, head_sha1);
1701 }
1702
1703 /* Run extra sanity checks if delete is not forced */
1704 if (!force) {
1705 /* Remote HEAD must resolve to a known object */
1706 if (symref)
1707 return error("Remote HEAD symrefs too deep");
1708 if (is_null_sha1(head_sha1))
1709 return error("Unable to resolve remote HEAD");
1710 if (!has_sha1_file(head_sha1))
1711 return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
1712
1713 /* Remote branch must resolve to a known object */
1714 if (is_null_sha1(remote_ref->old_sha1))
1715 return error("Unable to resolve remote branch %s",
1716 remote_ref->name);
1717 if (!has_sha1_file(remote_ref->old_sha1))
1718 return error("Remote branch %s resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", remote_ref->name, sha1_to_hex(remote_ref->old_sha1));
1719
1720 /* Remote branch must be an ancestor of remote HEAD */
1721 if (!verify_merge_base(head_sha1, remote_ref->old_sha1)) {
1722 return error("The branch '%s' is not an ancestor "
1723 "of your current HEAD.\n"
1724 "If you are sure you want to delete it,"
1725 " run:\n\t'git http-push -D %s %s'",
1726 remote_ref->name, repo->url, pattern);
1727 }
1728 }
1729
1730 /* Send delete request */
1731 fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
1732 if (dry_run)
1733 return 0;
1734 url = xmalloc(strlen(repo->url) + strlen(remote_ref->name) + 1);
1735 sprintf(url, "%s%s", repo->url, remote_ref->name);
1736 slot = get_active_slot();
1737 slot->results = &results;
1738 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1739 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1740 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1741 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_DELETE);
1742 if (start_active_slot(slot)) {
1743 run_active_slot(slot);
1744 free(url);
1745 if (results.curl_result != CURLE_OK)
1746 return error("DELETE request failed (%d/%ld)\n",
1747 results.curl_result, results.http_code);
1748 } else {
1749 free(url);
1750 return error("Unable to start DELETE request");
1751 }
1752
1753 return 0;
1754 }
1755
1756 static void run_request_queue(void)
1757 {
1758 #ifdef USE_CURL_MULTI
1759 is_running_queue = 1;
1760 fill_active_slots();
1761 add_fill_function(NULL, fill_active_slot);
1762 #endif
1763 do {
1764 finish_all_active_slots();
1765 #ifdef USE_CURL_MULTI
1766 fill_active_slots();
1767 #endif
1768 } while (request_queue_head && !aborted);
1769
1770 #ifdef USE_CURL_MULTI
1771 is_running_queue = 0;
1772 #endif
1773 }
1774
1775 int main(int argc, char **argv)
1776 {
1777 struct transfer_request *request;
1778 struct transfer_request *next_request;
1779 int nr_refspec = 0;
1780 char **refspec = NULL;
1781 struct remote_lock *ref_lock = NULL;
1782 struct remote_lock *info_ref_lock = NULL;
1783 struct rev_info revs;
1784 int delete_branch = 0;
1785 int force_delete = 0;
1786 int objects_to_send;
1787 int rc = 0;
1788 int i;
1789 int new_refs;
1790 struct ref *ref, *local_refs;
1791 struct remote *remote;
1792 char *rewritten_url = NULL;
1793
1794 git_extract_argv0_path(argv[0]);
1795
1796 repo = xcalloc(sizeof(*repo), 1);
1797
1798 argv++;
1799 for (i = 1; i < argc; i++, argv++) {
1800 char *arg = *argv;
1801
1802 if (*arg == '-') {
1803 if (!strcmp(arg, "--all")) {
1804 push_all = MATCH_REFS_ALL;
1805 continue;
1806 }
1807 if (!strcmp(arg, "--force")) {
1808 force_all = 1;
1809 continue;
1810 }
1811 if (!strcmp(arg, "--dry-run")) {
1812 dry_run = 1;
1813 continue;
1814 }
1815 if (!strcmp(arg, "--helper-status")) {
1816 helper_status = 1;
1817 continue;
1818 }
1819 if (!strcmp(arg, "--verbose")) {
1820 push_verbosely = 1;
1821 http_is_verbose = 1;
1822 continue;
1823 }
1824 if (!strcmp(arg, "-d")) {
1825 delete_branch = 1;
1826 continue;
1827 }
1828 if (!strcmp(arg, "-D")) {
1829 delete_branch = 1;
1830 force_delete = 1;
1831 continue;
1832 }
1833 if (!strcmp(arg, "-h"))
1834 usage(http_push_usage);
1835 }
1836 if (!repo->url) {
1837 char *path = strstr(arg, "//");
1838 repo->url = arg;
1839 repo->path_len = strlen(arg);
1840 if (path) {
1841 repo->path = strchr(path+2, '/');
1842 if (repo->path)
1843 repo->path_len = strlen(repo->path);
1844 }
1845 continue;
1846 }
1847 refspec = argv;
1848 nr_refspec = argc - i;
1849 break;
1850 }
1851
1852 #ifndef USE_CURL_MULTI
1853 die("git-push is not available for http/https repository when not compiled with USE_CURL_MULTI");
1854 #endif
1855
1856 if (!repo->url)
1857 usage(http_push_usage);
1858
1859 if (delete_branch && nr_refspec != 1)
1860 die("You must specify only one branch name when deleting a remote branch");
1861
1862 setup_git_directory();
1863
1864 memset(remote_dir_exists, -1, 256);
1865
1866 /*
1867 * Create a minimum remote by hand to give to http_init(),
1868 * primarily to allow it to look at the URL.
1869 */
1870 remote = xcalloc(sizeof(*remote), 1);
1871 ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
1872 remote->url[remote->url_nr++] = repo->url;
1873 http_init(remote);
1874
1875 if (repo->url && repo->url[strlen(repo->url)-1] != '/') {
1876 rewritten_url = xmalloc(strlen(repo->url)+2);
1877 strcpy(rewritten_url, repo->url);
1878 strcat(rewritten_url, "/");
1879 repo->path = rewritten_url + (repo->path - repo->url);
1880 repo->path_len++;
1881 repo->url = rewritten_url;
1882 }
1883
1884 #ifdef USE_CURL_MULTI
1885 is_running_queue = 0;
1886 #endif
1887
1888 /* Verify DAV compliance/lock support */
1889 if (!locking_available()) {
1890 rc = 1;
1891 goto cleanup;
1892 }
1893
1894 sigchain_push_common(remove_locks_on_signal);
1895
1896 /* Check whether the remote has server info files */
1897 repo->can_update_info_refs = 0;
1898 repo->has_info_refs = remote_exists("info/refs");
1899 repo->has_info_packs = remote_exists("objects/info/packs");
1900 if (repo->has_info_refs) {
1901 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
1902 if (info_ref_lock)
1903 repo->can_update_info_refs = 1;
1904 else {
1905 error("cannot lock existing info/refs");
1906 rc = 1;
1907 goto cleanup;
1908 }
1909 }
1910 if (repo->has_info_packs)
1911 fetch_indices();
1912
1913 /* Get a list of all local and remote heads to validate refspecs */
1914 local_refs = get_local_heads();
1915 fprintf(stderr, "Fetching remote heads...\n");
1916 get_dav_remote_heads();
1917 run_request_queue();
1918
1919 /* Remove a remote branch if -d or -D was specified */
1920 if (delete_branch) {
1921 if (delete_remote_branch(refspec[0], force_delete) == -1) {
1922 fprintf(stderr, "Unable to delete remote branch %s\n",
1923 refspec[0]);
1924 if (helper_status)
1925 printf("error %s cannot remove\n", refspec[0]);
1926 }
1927 goto cleanup;
1928 }
1929
1930 /* match them up */
1931 if (match_refs(local_refs, &remote_refs,
1932 nr_refspec, (const char **) refspec, push_all)) {
1933 rc = -1;
1934 goto cleanup;
1935 }
1936 if (!remote_refs) {
1937 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
1938 if (helper_status)
1939 printf("error null no match\n");
1940 rc = 0;
1941 goto cleanup;
1942 }
1943
1944 new_refs = 0;
1945 for (ref = remote_refs; ref; ref = ref->next) {
1946 char old_hex[60], *new_hex;
1947 const char *commit_argv[5];
1948 int commit_argc;
1949 char *new_sha1_hex, *old_sha1_hex;
1950
1951 if (!ref->peer_ref)
1952 continue;
1953
1954 if (is_null_sha1(ref->peer_ref->new_sha1)) {
1955 if (delete_remote_branch(ref->name, 1) == -1) {
1956 error("Could not remove %s", ref->name);
1957 if (helper_status)
1958 printf("error %s cannot remove\n", ref->name);
1959 rc = -4;
1960 }
1961 else if (helper_status)
1962 printf("ok %s\n", ref->name);
1963 new_refs++;
1964 continue;
1965 }
1966
1967 if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
1968 if (push_verbosely)
1969 fprintf(stderr, "'%s': up-to-date\n", ref->name);
1970 if (helper_status)
1971 printf("ok %s up to date\n", ref->name);
1972 continue;
1973 }
1974
1975 if (!force_all &&
1976 !is_null_sha1(ref->old_sha1) &&
1977 !ref->force) {
1978 if (!has_sha1_file(ref->old_sha1) ||
1979 !ref_newer(ref->peer_ref->new_sha1,
1980 ref->old_sha1)) {
1981 /*
1982 * We do not have the remote ref, or
1983 * we know that the remote ref is not
1984 * an ancestor of what we are trying to
1985 * push. Either way this can be losing
1986 * commits at the remote end and likely
1987 * we were not up to date to begin with.
1988 */
1989 error("remote '%s' is not an ancestor of\n"
1990 "local '%s'.\n"
1991 "Maybe you are not up-to-date and "
1992 "need to pull first?",
1993 ref->name,
1994 ref->peer_ref->name);
1995 if (helper_status)
1996 printf("error %s non-fast forward\n", ref->name);
1997 rc = -2;
1998 continue;
1999 }
2000 }
2001 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
2002 new_refs++;
2003 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
2004 new_hex = sha1_to_hex(ref->new_sha1);
2005
2006 fprintf(stderr, "updating '%s'", ref->name);
2007 if (strcmp(ref->name, ref->peer_ref->name))
2008 fprintf(stderr, " using '%s'", ref->peer_ref->name);
2009 fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
2010 if (dry_run) {
2011 if (helper_status)
2012 printf("ok %s\n", ref->name);
2013 continue;
2014 }
2015
2016 /* Lock remote branch ref */
2017 ref_lock = lock_remote(ref->name, LOCK_TIME);
2018 if (ref_lock == NULL) {
2019 fprintf(stderr, "Unable to lock remote branch %s\n",
2020 ref->name);
2021 if (helper_status)
2022 printf("error %s lock error\n", ref->name);
2023 rc = 1;
2024 continue;
2025 }
2026
2027 /* Set up revision info for this refspec */
2028 commit_argc = 3;
2029 new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
2030 old_sha1_hex = NULL;
2031 commit_argv[1] = "--objects";
2032 commit_argv[2] = new_sha1_hex;
2033 if (!push_all && !is_null_sha1(ref->old_sha1)) {
2034 old_sha1_hex = xmalloc(42);
2035 sprintf(old_sha1_hex, "^%s",
2036 sha1_to_hex(ref->old_sha1));
2037 commit_argv[3] = old_sha1_hex;
2038 commit_argc++;
2039 }
2040 commit_argv[commit_argc] = NULL;
2041 init_revisions(&revs, setup_git_directory());
2042 setup_revisions(commit_argc, commit_argv, &revs, NULL);
2043 revs.edge_hint = 0; /* just in case */
2044 free(new_sha1_hex);
2045 if (old_sha1_hex) {
2046 free(old_sha1_hex);
2047 commit_argv[1] = NULL;
2048 }
2049
2050 /* Generate a list of objects that need to be pushed */
2051 pushing = 0;
2052 if (prepare_revision_walk(&revs))
2053 die("revision walk setup failed");
2054 mark_edges_uninteresting(revs.commits, &revs, NULL);
2055 objects_to_send = get_delta(&revs, ref_lock);
2056 finish_all_active_slots();
2057
2058 /* Push missing objects to remote, this would be a
2059 convenient time to pack them first if appropriate. */
2060 pushing = 1;
2061 if (objects_to_send)
2062 fprintf(stderr, " sending %d objects\n",
2063 objects_to_send);
2064
2065 run_request_queue();
2066
2067 /* Update the remote branch if all went well */
2068 if (aborted || !update_remote(ref->new_sha1, ref_lock))
2069 rc = 1;
2070
2071 if (!rc)
2072 fprintf(stderr, " done\n");
2073 if (helper_status)
2074 printf("%s %s\n", !rc ? "ok" : "error", ref->name);
2075 unlock_remote(ref_lock);
2076 check_locks();
2077 }
2078
2079 /* Update remote server info if appropriate */
2080 if (repo->has_info_refs && new_refs) {
2081 if (info_ref_lock && repo->can_update_info_refs) {
2082 fprintf(stderr, "Updating remote server info\n");
2083 if (!dry_run)
2084 update_remote_info_refs(info_ref_lock);
2085 } else {
2086 fprintf(stderr, "Unable to update server info\n");
2087 }
2088 }
2089
2090 cleanup:
2091 free(rewritten_url);
2092 if (info_ref_lock)
2093 unlock_remote(info_ref_lock);
2094 free(repo);
2095
2096 http_cleanup();
2097
2098 request = request_queue_head;
2099 while (request != NULL) {
2100 next_request = request->next;
2101 release_request(request);
2102 request = next_request;
2103 }
2104
2105 return rc;
2106 }
My patches to 4msysgit