?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
http*: add http_get_info_packs
[alt-git.git] / http-push.c
blob7ad3b690bbe696f50bd7bcd28ae1f5e156c4ccb3
1 #include "cache.h"
2 #include "commit.h"
3 #include "pack.h"
4 #include "tag.h"
5 #include "blob.h"
6 #include "http.h"
7 #include "refs.h"
8 #include "diff.h"
9 #include "revision.h"
10 #include "exec_cmd.h"
11 #include "remote.h"
12 #include "list-objects.h"
13 #include "sigchain.h"
14
15 #include <expat.h>
16
17 static const char http_push_usage[] =
18 "git http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
19
20 #ifndef XML_STATUS_OK
21 enum XML_Status {
22 XML_STATUS_OK = 1,
23 XML_STATUS_ERROR = 0
24 };
25 #define XML_STATUS_OK 1
26 #define XML_STATUS_ERROR 0
27 #endif
28
29 #define PREV_BUF_SIZE 4096
30
31 /* DAV methods */
32 #define DAV_LOCK "LOCK"
33 #define DAV_MKCOL "MKCOL"
34 #define DAV_MOVE "MOVE"
35 #define DAV_PROPFIND "PROPFIND"
36 #define DAV_PUT "PUT"
37 #define DAV_UNLOCK "UNLOCK"
38 #define DAV_DELETE "DELETE"
39
40 /* DAV lock flags */
41 #define DAV_PROP_LOCKWR (1u << 0)
42 #define DAV_PROP_LOCKEX (1u << 1)
43 #define DAV_LOCK_OK (1u << 2)
44
45 /* DAV XML properties */
46 #define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
47 #define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
48 #define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
49 #define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
50 #define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
51 #define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
52 #define DAV_PROPFIND_RESP ".multistatus.response"
53 #define DAV_PROPFIND_NAME ".multistatus.response.href"
54 #define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
55
56 /* DAV request body templates */
57 #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>"
58 #define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
59 #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>"
60
61 #define LOCK_TIME 600
62 #define LOCK_REFRESH 30
63
64 /* bits #0-15 in revision.h */
65
66 #define LOCAL (1u<<16)
67 #define REMOTE (1u<<17)
68 #define FETCHING (1u<<18)
69 #define PUSHING (1u<<19)
70
71 /* We allow "recursive" symbolic refs. Only within reason, though */
72 #define MAXDEPTH 5
73
74 static int pushing;
75 static int aborted;
76 static signed char remote_dir_exists[256];
77
78 static int push_verbosely;
79 static int push_all = MATCH_REFS_NONE;
80 static int force_all;
81 static int dry_run;
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 char filename[PATH_MAX];
120 char tmpfile[PATH_MAX];
121 int local_fileno;
122 FILE *local_stream;
123 enum transfer_state state;
124 CURLcode curl_result;
125 char errorstr[CURL_ERROR_SIZE];
126 long http_code;
127 unsigned char real_sha1[20];
128 git_SHA_CTX c;
129 z_stream stream;
130 int zret;
131 int rename;
132 void *userData;
133 struct active_request_slot *slot;
134 struct transfer_request *next;
135 };
136
137 static struct transfer_request *request_queue_head;
138
139 struct xml_ctx
140 {
141 char *name;
142 int len;
143 char *cdata;
144 void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
145 void *userData;
146 };
147
148 struct remote_lock
149 {
150 char *url;
151 char *owner;
152 char *token;
153 char tmpfile_suffix[41];
154 time_t start_time;
155 long timeout;
156 int refreshing;
157 struct remote_lock *next;
158 };
159
160 /* Flags that control remote_ls processing */
161 #define PROCESS_FILES (1u << 0)
162 #define PROCESS_DIRS (1u << 1)
163 #define RECURSIVE (1u << 2)
164
165 /* Flags that remote_ls passes to callback functions */
166 #define IS_DIR (1u << 0)
167
168 struct remote_ls_ctx
169 {
170 char *path;
171 void (*userFunc)(struct remote_ls_ctx *ls);
172 void *userData;
173 int flags;
174 char *dentry_name;
175 int dentry_flags;
176 struct remote_ls_ctx *parent;
177 };
178
179 /* get_dav_token_headers options */
180 enum dav_header_flag {
181 DAV_HEADER_IF = (1u << 0),
182 DAV_HEADER_LOCK = (1u << 1),
183 DAV_HEADER_TIMEOUT = (1u << 2)
184 };
185
186 static char *xml_entities(char *s)
187 {
188 struct strbuf buf = STRBUF_INIT;
189 while (*s) {
190 size_t len = strcspn(s, "\"<>&");
191 strbuf_add(&buf, s, len);
192 s += len;
193 switch (*s) {
194 case '"':
195 strbuf_addstr(&buf, "&quot;");
196 break;
197 case '<':
198 strbuf_addstr(&buf, "&lt;");
199 break;
200 case '>':
201 strbuf_addstr(&buf, "&gt;");
202 break;
203 case '&':
204 strbuf_addstr(&buf, "&amp;");
205 break;
206 }
207 s++;
208 }
209 return strbuf_detach(&buf, NULL);
210 }
211
212 static struct curl_slist *get_dav_token_headers(struct remote_lock *lock, enum dav_header_flag options)
213 {
214 struct strbuf buf = STRBUF_INIT;
215 struct curl_slist *dav_headers = NULL;
216
217 if (options & DAV_HEADER_IF) {
218 strbuf_addf(&buf, "If: (<%s>)", lock->token);
219 dav_headers = curl_slist_append(dav_headers, buf.buf);
220 strbuf_reset(&buf);
221 }
222 if (options & DAV_HEADER_LOCK) {
223 strbuf_addf(&buf, "Lock-Token: <%s>", lock->token);
224 dav_headers = curl_slist_append(dav_headers, buf.buf);
225 strbuf_reset(&buf);
226 }
227 if (options & DAV_HEADER_TIMEOUT) {
228 strbuf_addf(&buf, "Timeout: Second-%ld", lock->timeout);
229 dav_headers = curl_slist_append(dav_headers, buf.buf);
230 strbuf_reset(&buf);
231 }
232 strbuf_release(&buf);
233
234 return dav_headers;
235 }
236
237 static void append_remote_object_url(struct strbuf *buf, const char *url,
238 const char *hex,
239 int only_two_digit_prefix)
240 {
241 strbuf_addf(buf, "%sobjects/%.*s/", url, 2, hex);
242 if (!only_two_digit_prefix)
243 strbuf_addf(buf, "%s", hex+2);
244 }
245
246 static void finish_request(struct transfer_request *request);
247 static void release_request(struct transfer_request *request);
248
249 static void process_response(void *callback_data)
250 {
251 struct transfer_request *request =
252 (struct transfer_request *)callback_data;
253
254 finish_request(request);
255 }
256
257 #ifdef USE_CURL_MULTI
258
259 static char *get_remote_object_url(const char *url, const char *hex,
260 int only_two_digit_prefix)
261 {
262 struct strbuf buf = STRBUF_INIT;
263 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
264 return strbuf_detach(&buf, NULL);
265 }
266
267 static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
268 void *data)
269 {
270 unsigned char expn[4096];
271 size_t size = eltsize * nmemb;
272 int posn = 0;
273 struct transfer_request *request = (struct transfer_request *)data;
274 do {
275 ssize_t retval = xwrite(request->local_fileno,
276 (char *) ptr + posn, size - posn);
277 if (retval < 0)
278 return posn;
279 posn += retval;
280 } while (posn < size);
281
282 request->stream.avail_in = size;
283 request->stream.next_in = ptr;
284 do {
285 request->stream.next_out = expn;
286 request->stream.avail_out = sizeof(expn);
287 request->zret = git_inflate(&request->stream, Z_SYNC_FLUSH);
288 git_SHA1_Update(&request->c, expn,
289 sizeof(expn) - request->stream.avail_out);
290 } while (request->stream.avail_in && request->zret == Z_OK);
291 data_received++;
292 return size;
293 }
294
295 static void start_fetch_loose(struct transfer_request *request)
296 {
297 char *hex = sha1_to_hex(request->obj->sha1);
298 char *filename;
299 char prevfile[PATH_MAX];
300 char *url;
301 int prevlocal;
302 unsigned char prev_buf[PREV_BUF_SIZE];
303 ssize_t prev_read = 0;
304 long prev_posn = 0;
305 char range[RANGE_HEADER_SIZE];
306 struct curl_slist *range_header = NULL;
307 struct active_request_slot *slot;
308
309 filename = sha1_file_name(request->obj->sha1);
310 snprintf(request->filename, sizeof(request->filename), "%s", filename);
311 snprintf(request->tmpfile, sizeof(request->tmpfile),
312 "%s.temp", filename);
313
314 snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename);
315 unlink_or_warn(prevfile);
316 rename(request->tmpfile, prevfile);
317 unlink_or_warn(request->tmpfile);
318
319 if (request->local_fileno != -1)
320 error("fd leakage in start: %d", request->local_fileno);
321 request->local_fileno = open(request->tmpfile,
322 O_WRONLY | O_CREAT | O_EXCL, 0666);
323 /*
324 * This could have failed due to the "lazy directory creation";
325 * try to mkdir the last path component.
326 */
327 if (request->local_fileno < 0 && errno == ENOENT) {
328 char *dir = strrchr(request->tmpfile, '/');
329 if (dir) {
330 *dir = 0;
331 mkdir(request->tmpfile, 0777);
332 *dir = '/';
333 }
334 request->local_fileno = open(request->tmpfile,
335 O_WRONLY | O_CREAT | O_EXCL, 0666);
336 }
337
338 if (request->local_fileno < 0) {
339 request->state = ABORTED;
340 error("Couldn't create temporary file %s for %s: %s",
341 request->tmpfile, request->filename, strerror(errno));
342 return;
343 }
344
345 memset(&request->stream, 0, sizeof(request->stream));
346
347 git_inflate_init(&request->stream);
348
349 git_SHA1_Init(&request->c);
350
351 url = get_remote_object_url(repo->url, hex, 0);
352 request->url = xstrdup(url);
353
354 /*
355 * If a previous temp file is present, process what was already
356 * fetched.
357 */
358 prevlocal = open(prevfile, O_RDONLY);
359 if (prevlocal != -1) {
360 do {
361 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
362 if (prev_read>0) {
363 if (fwrite_sha1_file(prev_buf,
364 1,
365 prev_read,
366 request) == prev_read)
367 prev_posn += prev_read;
368 else
369 prev_read = -1;
370 }
371 } while (prev_read > 0);
372 close(prevlocal);
373 }
374 unlink_or_warn(prevfile);
375
376 /*
377 * Reset inflate/SHA1 if there was an error reading the previous temp
378 * file; also rewind to the beginning of the local file.
379 */
380 if (prev_read == -1) {
381 memset(&request->stream, 0, sizeof(request->stream));
382 git_inflate_init(&request->stream);
383 git_SHA1_Init(&request->c);
384 if (prev_posn>0) {
385 prev_posn = 0;
386 lseek(request->local_fileno, 0, SEEK_SET);
387 ftruncate(request->local_fileno, 0);
388 }
389 }
390
391 slot = get_active_slot();
392 slot->callback_func = process_response;
393 slot->callback_data = request;
394 request->slot = slot;
395
396 curl_easy_setopt(slot->curl, CURLOPT_FILE, request);
397 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
398 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
399 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
400 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
401
402 /*
403 * If we have successfully processed data from a previous fetch
404 * attempt, only fetch the data we don't already have.
405 */
406 if (prev_posn>0) {
407 if (push_verbosely)
408 fprintf(stderr,
409 "Resuming fetch of object %s at byte %ld\n",
410 hex, prev_posn);
411 sprintf(range, "Range: bytes=%ld-", prev_posn);
412 range_header = curl_slist_append(range_header, range);
413 curl_easy_setopt(slot->curl,
414 CURLOPT_HTTPHEADER, range_header);
415 }
416
417 /* Try to get the request started, abort the request on error */
418 request->state = RUN_FETCH_LOOSE;
419 if (!start_active_slot(slot)) {
420 fprintf(stderr, "Unable to start GET request\n");
421 repo->can_update_info_refs = 0;
422 release_request(request);
423 }
424 }
425
426 static void start_mkcol(struct transfer_request *request)
427 {
428 char *hex = sha1_to_hex(request->obj->sha1);
429 struct active_request_slot *slot;
430
431 request->url = get_remote_object_url(repo->url, hex, 1);
432
433 slot = get_active_slot();
434 slot->callback_func = process_response;
435 slot->callback_data = request;
436 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
437 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
438 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
439 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
440 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
441
442 if (start_active_slot(slot)) {
443 request->slot = slot;
444 request->state = RUN_MKCOL;
445 } else {
446 request->state = ABORTED;
447 free(request->url);
448 request->url = NULL;
449 }
450 }
451 #endif
452
453 static void start_fetch_packed(struct transfer_request *request)
454 {
455 char *url;
456 struct packed_git *target;
457 FILE *packfile;
458 char *filename;
459 long prev_posn = 0;
460 char range[RANGE_HEADER_SIZE];
461 struct curl_slist *range_header = NULL;
462
463 struct transfer_request *check_request = request_queue_head;
464 struct active_request_slot *slot;
465
466 target = find_sha1_pack(request->obj->sha1, repo->packs);
467 if (!target) {
468 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
469 repo->can_update_info_refs = 0;
470 release_request(request);
471 return;
472 }
473
474 fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
475 fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
476
477 filename = sha1_pack_name(target->sha1);
478 snprintf(request->filename, sizeof(request->filename), "%s", filename);
479 snprintf(request->tmpfile, sizeof(request->tmpfile),
480 "%s.temp", filename);
481
482 url = xmalloc(strlen(repo->url) + 64);
483 sprintf(url, "%sobjects/pack/pack-%s.pack",
484 repo->url, sha1_to_hex(target->sha1));
485
486 /* Make sure there isn't another open request for this pack */
487 while (check_request) {
488 if (check_request->state == RUN_FETCH_PACKED &&
489 !strcmp(check_request->url, url)) {
490 free(url);
491 release_request(request);
492 return;
493 }
494 check_request = check_request->next;
495 }
496
497 packfile = fopen(request->tmpfile, "a");
498 if (!packfile) {
499 fprintf(stderr, "Unable to open local file %s for pack",
500 request->tmpfile);
501 repo->can_update_info_refs = 0;
502 free(url);
503 return;
504 }
505
506 slot = get_active_slot();
507 slot->callback_func = process_response;
508 slot->callback_data = request;
509 request->slot = slot;
510 request->local_stream = packfile;
511 request->userData = target;
512
513 request->url = url;
514 curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
515 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
516 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
517 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
518 slot->local = packfile;
519
520 /*
521 * If there is data present from a previous transfer attempt,
522 * resume where it left off
523 */
524 prev_posn = ftell(packfile);
525 if (prev_posn>0) {
526 if (push_verbosely)
527 fprintf(stderr,
528 "Resuming fetch of pack %s at byte %ld\n",
529 sha1_to_hex(target->sha1), prev_posn);
530 sprintf(range, "Range: bytes=%ld-", prev_posn);
531 range_header = curl_slist_append(range_header, range);
532 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
533 }
534
535 /* Try to get the request started, abort the request on error */
536 request->state = RUN_FETCH_PACKED;
537 if (!start_active_slot(slot)) {
538 fprintf(stderr, "Unable to start GET request\n");
539 repo->can_update_info_refs = 0;
540 release_request(request);
541 }
542 }
543
544 static void start_put(struct transfer_request *request)
545 {
546 char *hex = sha1_to_hex(request->obj->sha1);
547 struct active_request_slot *slot;
548 struct strbuf buf = STRBUF_INIT;
549 enum object_type type;
550 char hdr[50];
551 void *unpacked;
552 unsigned long len;
553 int hdrlen;
554 ssize_t size;
555 z_stream stream;
556
557 unpacked = read_sha1_file(request->obj->sha1, &type, &len);
558 hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
559
560 /* Set it up */
561 memset(&stream, 0, sizeof(stream));
562 deflateInit(&stream, zlib_compression_level);
563 size = deflateBound(&stream, len + hdrlen);
564 strbuf_init(&request->buffer.buf, size);
565 request->buffer.posn = 0;
566
567 /* Compress it */
568 stream.next_out = (unsigned char *)request->buffer.buf.buf;
569 stream.avail_out = size;
570
571 /* First header.. */
572 stream.next_in = (void *)hdr;
573 stream.avail_in = hdrlen;
574 while (deflate(&stream, 0) == Z_OK)
575 /* nothing */;
576
577 /* Then the data itself.. */
578 stream.next_in = unpacked;
579 stream.avail_in = len;
580 while (deflate(&stream, Z_FINISH) == Z_OK)
581 /* nothing */;
582 deflateEnd(&stream);
583 free(unpacked);
584
585 request->buffer.buf.len = stream.total_out;
586
587 strbuf_addstr(&buf, "Destination: ");
588 append_remote_object_url(&buf, repo->url, hex, 0);
589 request->dest = strbuf_detach(&buf, NULL);
590
591 append_remote_object_url(&buf, repo->url, hex, 0);
592 strbuf_add(&buf, request->lock->tmpfile_suffix, 41);
593 request->url = strbuf_detach(&buf, NULL);
594
595 slot = get_active_slot();
596 slot->callback_func = process_response;
597 slot->callback_data = request;
598 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
599 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.buf.len);
600 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
601 #ifndef NO_CURL_IOCTL
602 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
603 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &request->buffer);
604 #endif
605 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
606 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
607 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
608 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
609 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
610 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
611
612 if (start_active_slot(slot)) {
613 request->slot = slot;
614 request->state = RUN_PUT;
615 } else {
616 request->state = ABORTED;
617 free(request->url);
618 request->url = NULL;
619 }
620 }
621
622 static void start_move(struct transfer_request *request)
623 {
624 struct active_request_slot *slot;
625 struct curl_slist *dav_headers = NULL;
626
627 slot = get_active_slot();
628 slot->callback_func = process_response;
629 slot->callback_data = request;
630 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
631 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
632 dav_headers = curl_slist_append(dav_headers, request->dest);
633 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
634 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
635 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
636 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
637
638 if (start_active_slot(slot)) {
639 request->slot = slot;
640 request->state = RUN_MOVE;
641 } else {
642 request->state = ABORTED;
643 free(request->url);
644 request->url = NULL;
645 }
646 }
647
648 static int refresh_lock(struct remote_lock *lock)
649 {
650 struct active_request_slot *slot;
651 struct slot_results results;
652 struct curl_slist *dav_headers;
653 int rc = 0;
654
655 lock->refreshing = 1;
656
657 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF | DAV_HEADER_TIMEOUT);
658
659 slot = get_active_slot();
660 slot->results = &results;
661 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
662 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
663 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
664 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
665 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
666
667 if (start_active_slot(slot)) {
668 run_active_slot(slot);
669 if (results.curl_result != CURLE_OK) {
670 fprintf(stderr, "LOCK HTTP error %ld\n",
671 results.http_code);
672 } else {
673 lock->start_time = time(NULL);
674 rc = 1;
675 }
676 }
677
678 lock->refreshing = 0;
679 curl_slist_free_all(dav_headers);
680
681 return rc;
682 }
683
684 static void check_locks(void)
685 {
686 struct remote_lock *lock = repo->locks;
687 time_t current_time = time(NULL);
688 int time_remaining;
689
690 while (lock) {
691 time_remaining = lock->start_time + lock->timeout -
692 current_time;
693 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
694 if (!refresh_lock(lock)) {
695 fprintf(stderr,
696 "Unable to refresh lock for %s\n",
697 lock->url);
698 aborted = 1;
699 return;
700 }
701 }
702 lock = lock->next;
703 }
704 }
705
706 static void release_request(struct transfer_request *request)
707 {
708 struct transfer_request *entry = request_queue_head;
709
710 if (request == request_queue_head) {
711 request_queue_head = request->next;
712 } else {
713 while (entry->next != NULL && entry->next != request)
714 entry = entry->next;
715 if (entry->next == request)
716 entry->next = entry->next->next;
717 }
718
719 if (request->local_fileno != -1)
720 close(request->local_fileno);
721 if (request->local_stream)
722 fclose(request->local_stream);
723 free(request->url);
724 free(request);
725 }
726
727 static void finish_request(struct transfer_request *request)
728 {
729 struct stat st;
730 struct packed_git *target;
731 struct packed_git **lst;
732 struct active_request_slot *slot;
733
734 request->curl_result = request->slot->curl_result;
735 request->http_code = request->slot->http_code;
736 slot = request->slot;
737 request->slot = NULL;
738
739 /* Keep locks active */
740 check_locks();
741
742 if (request->headers != NULL)
743 curl_slist_free_all(request->headers);
744
745 /* URL is reused for MOVE after PUT */
746 if (request->state != RUN_PUT) {
747 free(request->url);
748 request->url = NULL;
749 }
750
751 if (request->state == RUN_MKCOL) {
752 if (request->curl_result == CURLE_OK ||
753 request->http_code == 405) {
754 remote_dir_exists[request->obj->sha1[0]] = 1;
755 start_put(request);
756 } else {
757 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
758 sha1_to_hex(request->obj->sha1),
759 request->curl_result, request->http_code);
760 request->state = ABORTED;
761 aborted = 1;
762 }
763 } else if (request->state == RUN_PUT) {
764 if (request->curl_result == CURLE_OK) {
765 start_move(request);
766 } else {
767 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
768 sha1_to_hex(request->obj->sha1),
769 request->curl_result, request->http_code);
770 request->state = ABORTED;
771 aborted = 1;
772 }
773 } else if (request->state == RUN_MOVE) {
774 if (request->curl_result == CURLE_OK) {
775 if (push_verbosely)
776 fprintf(stderr, " sent %s\n",
777 sha1_to_hex(request->obj->sha1));
778 request->obj->flags |= REMOTE;
779 release_request(request);
780 } else {
781 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
782 sha1_to_hex(request->obj->sha1),
783 request->curl_result, request->http_code);
784 request->state = ABORTED;
785 aborted = 1;
786 }
787 } else if (request->state == RUN_FETCH_LOOSE) {
788 close(request->local_fileno);
789 request->local_fileno = -1;
790
791 if (request->curl_result != CURLE_OK &&
792 request->http_code != 416) {
793 if (stat(request->tmpfile, &st) == 0) {
794 if (st.st_size == 0)
795 unlink_or_warn(request->tmpfile);
796 }
797 } else {
798 if (request->http_code == 416)
799 warning("requested range invalid; we may already have all the data.");
800
801 git_inflate_end(&request->stream);
802 git_SHA1_Final(request->real_sha1, &request->c);
803 if (request->zret != Z_STREAM_END) {
804 unlink_or_warn(request->tmpfile);
805 } else if (hashcmp(request->obj->sha1, request->real_sha1)) {
806 unlink_or_warn(request->tmpfile);
807 } else {
808 request->rename =
809 move_temp_to_file(
810 request->tmpfile,
811 request->filename);
812 if (request->rename == 0)
813 request->obj->flags |= (LOCAL | REMOTE);
814 }
815 }
816
817 /* Try fetching packed if necessary */
818 if (request->obj->flags & LOCAL)
819 release_request(request);
820 else
821 start_fetch_packed(request);
822
823 } else if (request->state == RUN_FETCH_PACKED) {
824 if (request->curl_result != CURLE_OK) {
825 fprintf(stderr, "Unable to get pack file %s\n%s",
826 request->url, curl_errorstr);
827 repo->can_update_info_refs = 0;
828 } else {
829 off_t pack_size = ftell(request->local_stream);
830
831 fclose(request->local_stream);
832 request->local_stream = NULL;
833 slot->local = NULL;
834 if (!move_temp_to_file(request->tmpfile,
835 request->filename)) {
836 target = (struct packed_git *)request->userData;
837 target->pack_size = pack_size;
838 lst = &repo->packs;
839 while (*lst != target)
840 lst = &((*lst)->next);
841 *lst = (*lst)->next;
842
843 if (!verify_pack(target))
844 install_packed_git(target);
845 else
846 repo->can_update_info_refs = 0;
847 }
848 }
849 release_request(request);
850 }
851 }
852
853 #ifdef USE_CURL_MULTI
854 static int is_running_queue;
855 static int fill_active_slot(void *unused)
856 {
857 struct transfer_request *request;
858
859 if (aborted || !is_running_queue)
860 return 0;
861
862 for (request = request_queue_head; request; request = request->next) {
863 if (request->state == NEED_FETCH) {
864 start_fetch_loose(request);
865 return 1;
866 } else if (pushing && request->state == NEED_PUSH) {
867 if (remote_dir_exists[request->obj->sha1[0]] == 1) {
868 start_put(request);
869 } else {
870 start_mkcol(request);
871 }
872 return 1;
873 }
874 }
875 return 0;
876 }
877 #endif
878
879 static void get_remote_object_list(unsigned char parent);
880
881 static void add_fetch_request(struct object *obj)
882 {
883 struct transfer_request *request;
884
885 check_locks();
886
887 /*
888 * Don't fetch the object if it's known to exist locally
889 * or is already in the request queue
890 */
891 if (remote_dir_exists[obj->sha1[0]] == -1)
892 get_remote_object_list(obj->sha1[0]);
893 if (obj->flags & (LOCAL | FETCHING))
894 return;
895
896 obj->flags |= FETCHING;
897 request = xmalloc(sizeof(*request));
898 request->obj = obj;
899 request->url = NULL;
900 request->lock = NULL;
901 request->headers = NULL;
902 request->local_fileno = -1;
903 request->local_stream = NULL;
904 request->state = NEED_FETCH;
905 request->next = request_queue_head;
906 request_queue_head = request;
907
908 #ifdef USE_CURL_MULTI
909 fill_active_slots();
910 step_active_slots();
911 #endif
912 }
913
914 static int add_send_request(struct object *obj, struct remote_lock *lock)
915 {
916 struct transfer_request *request = request_queue_head;
917 struct packed_git *target;
918
919 /* Keep locks active */
920 check_locks();
921
922 /*
923 * Don't push the object if it's known to exist on the remote
924 * or is already in the request queue
925 */
926 if (remote_dir_exists[obj->sha1[0]] == -1)
927 get_remote_object_list(obj->sha1[0]);
928 if (obj->flags & (REMOTE | PUSHING))
929 return 0;
930 target = find_sha1_pack(obj->sha1, repo->packs);
931 if (target) {
932 obj->flags |= REMOTE;
933 return 0;
934 }
935
936 obj->flags |= PUSHING;
937 request = xmalloc(sizeof(*request));
938 request->obj = obj;
939 request->url = NULL;
940 request->lock = lock;
941 request->headers = NULL;
942 request->local_fileno = -1;
943 request->local_stream = NULL;
944 request->state = NEED_PUSH;
945 request->next = request_queue_head;
946 request_queue_head = request;
947
948 #ifdef USE_CURL_MULTI
949 fill_active_slots();
950 step_active_slots();
951 #endif
952
953 return 1;
954 }
955
956 static int fetch_indices(void)
957 {
958 int ret;
959
960 if (push_verbosely)
961 fprintf(stderr, "Getting pack list\n");
962
963 switch (http_get_info_packs(repo->url, &repo->packs)) {
964 case HTTP_OK:
965 case HTTP_MISSING_TARGET:
966 ret = 0;
967 break;
968 default:
969 ret = -1;
970 }
971
972 return ret;
973 }
974
975 static void one_remote_object(const char *hex)
976 {
977 unsigned char sha1[20];
978 struct object *obj;
979
980 if (get_sha1_hex(hex, sha1) != 0)
981 return;
982
983 obj = lookup_object(sha1);
984 if (!obj)
985 obj = parse_object(sha1);
986
987 /* Ignore remote objects that don't exist locally */
988 if (!obj)
989 return;
990
991 obj->flags |= REMOTE;
992 if (!object_list_contains(objects, obj))
993 object_list_insert(obj, &objects);
994 }
995
996 static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
997 {
998 int *lock_flags = (int *)ctx->userData;
999
1000 if (tag_closed) {
1001 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
1002 if ((*lock_flags & DAV_PROP_LOCKEX) &&
1003 (*lock_flags & DAV_PROP_LOCKWR)) {
1004 *lock_flags |= DAV_LOCK_OK;
1005 }
1006 *lock_flags &= DAV_LOCK_OK;
1007 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
1008 *lock_flags |= DAV_PROP_LOCKWR;
1009 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
1010 *lock_flags |= DAV_PROP_LOCKEX;
1011 }
1012 }
1013 }
1014
1015 static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
1016 {
1017 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
1018 git_SHA_CTX sha_ctx;
1019 unsigned char lock_token_sha1[20];
1020
1021 if (tag_closed && ctx->cdata) {
1022 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
1023 lock->owner = xmalloc(strlen(ctx->cdata) + 1);
1024 strcpy(lock->owner, ctx->cdata);
1025 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
1026 if (!prefixcmp(ctx->cdata, "Second-"))
1027 lock->timeout =
1028 strtol(ctx->cdata + 7, NULL, 10);
1029 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
1030 lock->token = xmalloc(strlen(ctx->cdata) + 1);
1031 strcpy(lock->token, ctx->cdata);
1032
1033 git_SHA1_Init(&sha_ctx);
1034 git_SHA1_Update(&sha_ctx, lock->token, strlen(lock->token));
1035 git_SHA1_Final(lock_token_sha1, &sha_ctx);
1036
1037 lock->tmpfile_suffix[0] = '_';
1038 memcpy(lock->tmpfile_suffix + 1, sha1_to_hex(lock_token_sha1), 40);
1039 }
1040 }
1041 }
1042
1043 static void one_remote_ref(char *refname);
1044
1045 static void
1046 xml_start_tag(void *userData, const char *name, const char **atts)
1047 {
1048 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1049 const char *c = strchr(name, ':');
1050 int new_len;
1051
1052 if (c == NULL)
1053 c = name;
1054 else
1055 c++;
1056
1057 new_len = strlen(ctx->name) + strlen(c) + 2;
1058
1059 if (new_len > ctx->len) {
1060 ctx->name = xrealloc(ctx->name, new_len);
1061 ctx->len = new_len;
1062 }
1063 strcat(ctx->name, ".");
1064 strcat(ctx->name, c);
1065
1066 free(ctx->cdata);
1067 ctx->cdata = NULL;
1068
1069 ctx->userFunc(ctx, 0);
1070 }
1071
1072 static void
1073 xml_end_tag(void *userData, const char *name)
1074 {
1075 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1076 const char *c = strchr(name, ':');
1077 char *ep;
1078
1079 ctx->userFunc(ctx, 1);
1080
1081 if (c == NULL)
1082 c = name;
1083 else
1084 c++;
1085
1086 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
1087 *ep = 0;
1088 }
1089
1090 static void
1091 xml_cdata(void *userData, const XML_Char *s, int len)
1092 {
1093 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1094 free(ctx->cdata);
1095 ctx->cdata = xmemdupz(s, len);
1096 }
1097
1098 static struct remote_lock *lock_remote(const char *path, long timeout)
1099 {
1100 struct active_request_slot *slot;
1101 struct slot_results results;
1102 struct buffer out_buffer = { STRBUF_INIT, 0 };
1103 struct strbuf in_buffer = STRBUF_INIT;
1104 char *url;
1105 char *ep;
1106 char timeout_header[25];
1107 struct remote_lock *lock = NULL;
1108 struct curl_slist *dav_headers = NULL;
1109 struct xml_ctx ctx;
1110 char *escaped;
1111
1112 url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1113 sprintf(url, "%s%s", repo->url, path);
1114
1115 /* Make sure leading directories exist for the remote ref */
1116 ep = strchr(url + strlen(repo->url) + 1, '/');
1117 while (ep) {
1118 char saved_character = ep[1];
1119 ep[1] = '\0';
1120 slot = get_active_slot();
1121 slot->results = &results;
1122 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1123 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1124 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
1125 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1126 if (start_active_slot(slot)) {
1127 run_active_slot(slot);
1128 if (results.curl_result != CURLE_OK &&
1129 results.http_code != 405) {
1130 fprintf(stderr,
1131 "Unable to create branch path %s\n",
1132 url);
1133 free(url);
1134 return NULL;
1135 }
1136 } else {
1137 fprintf(stderr, "Unable to start MKCOL request\n");
1138 free(url);
1139 return NULL;
1140 }
1141 ep[1] = saved_character;
1142 ep = strchr(ep + 1, '/');
1143 }
1144
1145 escaped = xml_entities(git_default_email);
1146 strbuf_addf(&out_buffer.buf, LOCK_REQUEST, escaped);
1147 free(escaped);
1148
1149 sprintf(timeout_header, "Timeout: Second-%ld", timeout);
1150 dav_headers = curl_slist_append(dav_headers, timeout_header);
1151 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1152
1153 slot = get_active_slot();
1154 slot->results = &results;
1155 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1156 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1157 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1158 #ifndef NO_CURL_IOCTL
1159 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1160 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1161 #endif
1162 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1163 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1164 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1165 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1166 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
1167 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1168
1169 lock = xcalloc(1, sizeof(*lock));
1170 lock->timeout = -1;
1171
1172 if (start_active_slot(slot)) {
1173 run_active_slot(slot);
1174 if (results.curl_result == CURLE_OK) {
1175 XML_Parser parser = XML_ParserCreate(NULL);
1176 enum XML_Status result;
1177 ctx.name = xcalloc(10, 1);
1178 ctx.len = 0;
1179 ctx.cdata = NULL;
1180 ctx.userFunc = handle_new_lock_ctx;
1181 ctx.userData = lock;
1182 XML_SetUserData(parser, &ctx);
1183 XML_SetElementHandler(parser, xml_start_tag,
1184 xml_end_tag);
1185 XML_SetCharacterDataHandler(parser, xml_cdata);
1186 result = XML_Parse(parser, in_buffer.buf,
1187 in_buffer.len, 1);
1188 free(ctx.name);
1189 if (result != XML_STATUS_OK) {
1190 fprintf(stderr, "XML error: %s\n",
1191 XML_ErrorString(
1192 XML_GetErrorCode(parser)));
1193 lock->timeout = -1;
1194 }
1195 XML_ParserFree(parser);
1196 }
1197 } else {
1198 fprintf(stderr, "Unable to start LOCK request\n");
1199 }
1200
1201 curl_slist_free_all(dav_headers);
1202 strbuf_release(&out_buffer.buf);
1203 strbuf_release(&in_buffer);
1204
1205 if (lock->token == NULL || lock->timeout <= 0) {
1206 free(lock->token);
1207 free(lock->owner);
1208 free(url);
1209 free(lock);
1210 lock = NULL;
1211 } else {
1212 lock->url = url;
1213 lock->start_time = time(NULL);
1214 lock->next = repo->locks;
1215 repo->locks = lock;
1216 }
1217
1218 return lock;
1219 }
1220
1221 static int unlock_remote(struct remote_lock *lock)
1222 {
1223 struct active_request_slot *slot;
1224 struct slot_results results;
1225 struct remote_lock *prev = repo->locks;
1226 struct curl_slist *dav_headers;
1227 int rc = 0;
1228
1229 dav_headers = get_dav_token_headers(lock, DAV_HEADER_LOCK);
1230
1231 slot = get_active_slot();
1232 slot->results = &results;
1233 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1234 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1235 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
1236 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1237
1238 if (start_active_slot(slot)) {
1239 run_active_slot(slot);
1240 if (results.curl_result == CURLE_OK)
1241 rc = 1;
1242 else
1243 fprintf(stderr, "UNLOCK HTTP error %ld\n",
1244 results.http_code);
1245 } else {
1246 fprintf(stderr, "Unable to start UNLOCK request\n");
1247 }
1248
1249 curl_slist_free_all(dav_headers);
1250
1251 if (repo->locks == lock) {
1252 repo->locks = lock->next;
1253 } else {
1254 while (prev && prev->next != lock)
1255 prev = prev->next;
1256 if (prev)
1257 prev->next = prev->next->next;
1258 }
1259
1260 free(lock->owner);
1261 free(lock->url);
1262 free(lock->token);
1263 free(lock);
1264
1265 return rc;
1266 }
1267
1268 static void remove_locks(void)
1269 {
1270 struct remote_lock *lock = repo->locks;
1271
1272 fprintf(stderr, "Removing remote locks...\n");
1273 while (lock) {
1274 unlock_remote(lock);
1275 lock = lock->next;
1276 }
1277 }
1278
1279 static void remove_locks_on_signal(int signo)
1280 {
1281 remove_locks();
1282 sigchain_pop(signo);
1283 raise(signo);
1284 }
1285
1286 static void remote_ls(const char *path, int flags,
1287 void (*userFunc)(struct remote_ls_ctx *ls),
1288 void *userData);
1289
1290 static void process_ls_object(struct remote_ls_ctx *ls)
1291 {
1292 unsigned int *parent = (unsigned int *)ls->userData;
1293 char *path = ls->dentry_name;
1294 char *obj_hex;
1295
1296 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1297 remote_dir_exists[*parent] = 1;
1298 return;
1299 }
1300
1301 if (strlen(path) != 49)
1302 return;
1303 path += 8;
1304 obj_hex = xmalloc(strlen(path));
1305 /* NB: path is not null-terminated, can not use strlcpy here */
1306 memcpy(obj_hex, path, 2);
1307 strcpy(obj_hex + 2, path + 3);
1308 one_remote_object(obj_hex);
1309 free(obj_hex);
1310 }
1311
1312 static void process_ls_ref(struct remote_ls_ctx *ls)
1313 {
1314 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1315 fprintf(stderr, " %s\n", ls->dentry_name);
1316 return;
1317 }
1318
1319 if (!(ls->dentry_flags & IS_DIR))
1320 one_remote_ref(ls->dentry_name);
1321 }
1322
1323 static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1324 {
1325 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
1326
1327 if (tag_closed) {
1328 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1329 if (ls->dentry_flags & IS_DIR) {
1330 if (ls->flags & PROCESS_DIRS) {
1331 ls->userFunc(ls);
1332 }
1333 if (strcmp(ls->dentry_name, ls->path) &&
1334 ls->flags & RECURSIVE) {
1335 remote_ls(ls->dentry_name,
1336 ls->flags,
1337 ls->userFunc,
1338 ls->userData);
1339 }
1340 } else if (ls->flags & PROCESS_FILES) {
1341 ls->userFunc(ls);
1342 }
1343 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1344 char *path = ctx->cdata;
1345 if (*ctx->cdata == 'h') {
1346 path = strstr(path, "//");
1347 if (path) {
1348 path = strchr(path+2, '/');
1349 }
1350 }
1351 if (path) {
1352 path += repo->path_len;
1353 ls->dentry_name = xstrdup(path);
1354 }
1355 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1356 ls->dentry_flags |= IS_DIR;
1357 }
1358 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1359 free(ls->dentry_name);
1360 ls->dentry_name = NULL;
1361 ls->dentry_flags = 0;
1362 }
1363 }
1364
1365 /*
1366 * NEEDSWORK: remote_ls() ignores info/refs on the remote side. But it
1367 * should _only_ heed the information from that file, instead of trying to
1368 * determine the refs from the remote file system (badly: it does not even
1369 * know about packed-refs).
1370 */
1371 static void remote_ls(const char *path, int flags,
1372 void (*userFunc)(struct remote_ls_ctx *ls),
1373 void *userData)
1374 {
1375 char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1376 struct active_request_slot *slot;
1377 struct slot_results results;
1378 struct strbuf in_buffer = STRBUF_INIT;
1379 struct buffer out_buffer = { STRBUF_INIT, 0 };
1380 struct curl_slist *dav_headers = NULL;
1381 struct xml_ctx ctx;
1382 struct remote_ls_ctx ls;
1383
1384 ls.flags = flags;
1385 ls.path = xstrdup(path);
1386 ls.dentry_name = NULL;
1387 ls.dentry_flags = 0;
1388 ls.userData = userData;
1389 ls.userFunc = userFunc;
1390
1391 sprintf(url, "%s%s", repo->url, path);
1392
1393 strbuf_addf(&out_buffer.buf, PROPFIND_ALL_REQUEST);
1394
1395 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1396 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1397
1398 slot = get_active_slot();
1399 slot->results = &results;
1400 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1401 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1402 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1403 #ifndef NO_CURL_IOCTL
1404 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1405 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1406 #endif
1407 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1408 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1409 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1410 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1411 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1412 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1413
1414 if (start_active_slot(slot)) {
1415 run_active_slot(slot);
1416 if (results.curl_result == CURLE_OK) {
1417 XML_Parser parser = XML_ParserCreate(NULL);
1418 enum XML_Status result;
1419 ctx.name = xcalloc(10, 1);
1420 ctx.len = 0;
1421 ctx.cdata = NULL;
1422 ctx.userFunc = handle_remote_ls_ctx;
1423 ctx.userData = &ls;
1424 XML_SetUserData(parser, &ctx);
1425 XML_SetElementHandler(parser, xml_start_tag,
1426 xml_end_tag);
1427 XML_SetCharacterDataHandler(parser, xml_cdata);
1428 result = XML_Parse(parser, in_buffer.buf,
1429 in_buffer.len, 1);
1430 free(ctx.name);
1431
1432 if (result != XML_STATUS_OK) {
1433 fprintf(stderr, "XML error: %s\n",
1434 XML_ErrorString(
1435 XML_GetErrorCode(parser)));
1436 }
1437 XML_ParserFree(parser);
1438 }
1439 } else {
1440 fprintf(stderr, "Unable to start PROPFIND request\n");
1441 }
1442
1443 free(ls.path);
1444 free(url);
1445 strbuf_release(&out_buffer.buf);
1446 strbuf_release(&in_buffer);
1447 curl_slist_free_all(dav_headers);
1448 }
1449
1450 static void get_remote_object_list(unsigned char parent)
1451 {
1452 char path[] = "objects/XX/";
1453 static const char hex[] = "0123456789abcdef";
1454 unsigned int val = parent;
1455
1456 path[8] = hex[val >> 4];
1457 path[9] = hex[val & 0xf];
1458 remote_dir_exists[val] = 0;
1459 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1460 process_ls_object, &val);
1461 }
1462
1463 static int locking_available(void)
1464 {
1465 struct active_request_slot *slot;
1466 struct slot_results results;
1467 struct strbuf in_buffer = STRBUF_INIT;
1468 struct buffer out_buffer = { STRBUF_INIT, 0 };
1469 struct curl_slist *dav_headers = NULL;
1470 struct xml_ctx ctx;
1471 int lock_flags = 0;
1472 char *escaped;
1473
1474 escaped = xml_entities(repo->url);
1475 strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, escaped);
1476 free(escaped);
1477
1478 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1479 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1480
1481 slot = get_active_slot();
1482 slot->results = &results;
1483 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1484 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1485 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1486 #ifndef NO_CURL_IOCTL
1487 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1488 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1489 #endif
1490 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1491 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1492 curl_easy_setopt(slot->curl, CURLOPT_URL, repo->url);
1493 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1494 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1495 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1496
1497 if (start_active_slot(slot)) {
1498 run_active_slot(slot);
1499 if (results.curl_result == CURLE_OK) {
1500 XML_Parser parser = XML_ParserCreate(NULL);
1501 enum XML_Status result;
1502 ctx.name = xcalloc(10, 1);
1503 ctx.len = 0;
1504 ctx.cdata = NULL;
1505 ctx.userFunc = handle_lockprop_ctx;
1506 ctx.userData = &lock_flags;
1507 XML_SetUserData(parser, &ctx);
1508 XML_SetElementHandler(parser, xml_start_tag,
1509 xml_end_tag);
1510 result = XML_Parse(parser, in_buffer.buf,
1511 in_buffer.len, 1);
1512 free(ctx.name);
1513
1514 if (result != XML_STATUS_OK) {
1515 fprintf(stderr, "XML error: %s\n",
1516 XML_ErrorString(
1517 XML_GetErrorCode(parser)));
1518 lock_flags = 0;
1519 }
1520 XML_ParserFree(parser);
1521 if (!lock_flags)
1522 error("no DAV locking support on %s",
1523 repo->url);
1524
1525 } else {
1526 error("Cannot access URL %s, return code %d",
1527 repo->url, results.curl_result);
1528 lock_flags = 0;
1529 }
1530 } else {
1531 error("Unable to start PROPFIND request on %s", repo->url);
1532 }
1533
1534 strbuf_release(&out_buffer.buf);
1535 strbuf_release(&in_buffer);
1536 curl_slist_free_all(dav_headers);
1537
1538 return lock_flags;
1539 }
1540
1541 static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1542 {
1543 struct object_list *entry = xmalloc(sizeof(struct object_list));
1544 entry->item = obj;
1545 entry->next = *p;
1546 *p = entry;
1547 return &entry->next;
1548 }
1549
1550 static struct object_list **process_blob(struct blob *blob,
1551 struct object_list **p,
1552 struct name_path *path,
1553 const char *name)
1554 {
1555 struct object *obj = &blob->object;
1556
1557 obj->flags |= LOCAL;
1558
1559 if (obj->flags & (UNINTERESTING | SEEN))
1560 return p;
1561
1562 obj->flags |= SEEN;
1563 return add_one_object(obj, p);
1564 }
1565
1566 static struct object_list **process_tree(struct tree *tree,
1567 struct object_list **p,
1568 struct name_path *path,
1569 const char *name)
1570 {
1571 struct object *obj = &tree->object;
1572 struct tree_desc desc;
1573 struct name_entry entry;
1574 struct name_path me;
1575
1576 obj->flags |= LOCAL;
1577
1578 if (obj->flags & (UNINTERESTING | SEEN))
1579 return p;
1580 if (parse_tree(tree) < 0)
1581 die("bad tree object %s", sha1_to_hex(obj->sha1));
1582
1583 obj->flags |= SEEN;
1584 name = xstrdup(name);
1585 p = add_one_object(obj, p);
1586 me.up = path;
1587 me.elem = name;
1588 me.elem_len = strlen(name);
1589
1590 init_tree_desc(&desc, tree->buffer, tree->size);
1591
1592 while (tree_entry(&desc, &entry))
1593 switch (object_type(entry.mode)) {
1594 case OBJ_TREE:
1595 p = process_tree(lookup_tree(entry.sha1), p, &me, name);
1596 break;
1597 case OBJ_BLOB:
1598 p = process_blob(lookup_blob(entry.sha1), p, &me, name);
1599 break;
1600 default:
1601 /* Subproject commit - not in this repository */
1602 break;
1603 }
1604
1605 free(tree->buffer);
1606 tree->buffer = NULL;
1607 return p;
1608 }
1609
1610 static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1611 {
1612 int i;
1613 struct commit *commit;
1614 struct object_list **p = &objects;
1615 int count = 0;
1616
1617 while ((commit = get_revision(revs)) != NULL) {
1618 p = process_tree(commit->tree, p, NULL, "");
1619 commit->object.flags |= LOCAL;
1620 if (!(commit->object.flags & UNINTERESTING))
1621 count += add_send_request(&commit->object, lock);
1622 }
1623
1624 for (i = 0; i < revs->pending.nr; i++) {
1625 struct object_array_entry *entry = revs->pending.objects + i;
1626 struct object *obj = entry->item;
1627 const char *name = entry->name;
1628
1629 if (obj->flags & (UNINTERESTING | SEEN))
1630 continue;
1631 if (obj->type == OBJ_TAG) {
1632 obj->flags |= SEEN;
1633 p = add_one_object(obj, p);
1634 continue;
1635 }
1636 if (obj->type == OBJ_TREE) {
1637 p = process_tree((struct tree *)obj, p, NULL, name);
1638 continue;
1639 }
1640 if (obj->type == OBJ_BLOB) {
1641 p = process_blob((struct blob *)obj, p, NULL, name);
1642 continue;
1643 }
1644 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1645 }
1646
1647 while (objects) {
1648 if (!(objects->item->flags & UNINTERESTING))
1649 count += add_send_request(objects->item, lock);
1650 objects = objects->next;
1651 }
1652
1653 return count;
1654 }
1655
1656 static int update_remote(unsigned char *sha1, struct remote_lock *lock)
1657 {
1658 struct active_request_slot *slot;
1659 struct slot_results results;
1660 struct buffer out_buffer = { STRBUF_INIT, 0 };
1661 struct curl_slist *dav_headers;
1662
1663 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1664
1665 strbuf_addf(&out_buffer.buf, "%s\n", sha1_to_hex(sha1));
1666
1667 slot = get_active_slot();
1668 slot->results = &results;
1669 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1670 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
1671 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1672 #ifndef NO_CURL_IOCTL
1673 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1674 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &out_buffer);
1675 #endif
1676 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1677 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1678 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1679 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1680 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1681 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1682
1683 if (start_active_slot(slot)) {
1684 run_active_slot(slot);
1685 strbuf_release(&out_buffer.buf);
1686 if (results.curl_result != CURLE_OK) {
1687 fprintf(stderr,
1688 "PUT error: curl result=%d, HTTP code=%ld\n",
1689 results.curl_result, results.http_code);
1690 /* We should attempt recovery? */
1691 return 0;
1692 }
1693 } else {
1694 strbuf_release(&out_buffer.buf);
1695 fprintf(stderr, "Unable to start PUT request\n");
1696 return 0;
1697 }
1698
1699 return 1;
1700 }
1701
1702 static struct ref *remote_refs, **remote_tail;
1703
1704 static void one_remote_ref(char *refname)
1705 {
1706 struct ref *ref;
1707 struct object *obj;
1708
1709 ref = alloc_ref(refname);
1710
1711 if (http_fetch_ref(repo->url, ref) != 0) {
1712 fprintf(stderr,
1713 "Unable to fetch ref %s from %s\n",
1714 refname, repo->url);
1715 free(ref);
1716 return;
1717 }
1718
1719 /*
1720 * Fetch a copy of the object if it doesn't exist locally - it
1721 * may be required for updating server info later.
1722 */
1723 if (repo->can_update_info_refs && !has_sha1_file(ref->old_sha1)) {
1724 obj = lookup_unknown_object(ref->old_sha1);
1725 if (obj) {
1726 fprintf(stderr, " fetch %s for %s\n",
1727 sha1_to_hex(ref->old_sha1), refname);
1728 add_fetch_request(obj);
1729 }
1730 }
1731
1732 *remote_tail = ref;
1733 remote_tail = &ref->next;
1734 }
1735
1736 static void get_dav_remote_heads(void)
1737 {
1738 remote_tail = &remote_refs;
1739 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
1740 }
1741
1742 static int is_zero_sha1(const unsigned char *sha1)
1743 {
1744 int i;
1745
1746 for (i = 0; i < 20; i++) {
1747 if (*sha1++)
1748 return 0;
1749 }
1750 return 1;
1751 }
1752
1753 static void add_remote_info_ref(struct remote_ls_ctx *ls)
1754 {
1755 struct strbuf *buf = (struct strbuf *)ls->userData;
1756 struct object *o;
1757 int len;
1758 char *ref_info;
1759 struct ref *ref;
1760
1761 ref = alloc_ref(ls->dentry_name);
1762
1763 if (http_fetch_ref(repo->url, ref) != 0) {
1764 fprintf(stderr,
1765 "Unable to fetch ref %s from %s\n",
1766 ls->dentry_name, repo->url);
1767 aborted = 1;
1768 free(ref);
1769 return;
1770 }
1771
1772 o = parse_object(ref->old_sha1);
1773 if (!o) {
1774 fprintf(stderr,
1775 "Unable to parse object %s for remote ref %s\n",
1776 sha1_to_hex(ref->old_sha1), ls->dentry_name);
1777 aborted = 1;
1778 free(ref);
1779 return;
1780 }
1781
1782 len = strlen(ls->dentry_name) + 42;
1783 ref_info = xcalloc(len + 1, 1);
1784 sprintf(ref_info, "%s %s\n",
1785 sha1_to_hex(ref->old_sha1), ls->dentry_name);
1786 fwrite_buffer(ref_info, 1, len, buf);
1787 free(ref_info);
1788
1789 if (o->type == OBJ_TAG) {
1790 o = deref_tag(o, ls->dentry_name, 0);
1791 if (o) {
1792 len = strlen(ls->dentry_name) + 45;
1793 ref_info = xcalloc(len + 1, 1);
1794 sprintf(ref_info, "%s %s^{}\n",
1795 sha1_to_hex(o->sha1), ls->dentry_name);
1796 fwrite_buffer(ref_info, 1, len, buf);
1797 free(ref_info);
1798 }
1799 }
1800 free(ref);
1801 }
1802
1803 static void update_remote_info_refs(struct remote_lock *lock)
1804 {
1805 struct buffer buffer = { STRBUF_INIT, 0 };
1806 struct active_request_slot *slot;
1807 struct slot_results results;
1808 struct curl_slist *dav_headers;
1809
1810 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
1811 add_remote_info_ref, &buffer.buf);
1812 if (!aborted) {
1813 dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
1814
1815 slot = get_active_slot();
1816 slot->results = &results;
1817 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
1818 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.buf.len);
1819 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1820 #ifndef NO_CURL_IOCTL
1821 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
1822 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, &buffer);
1823 #endif
1824 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1825 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1826 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1827 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1828 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1829 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1830
1831 if (start_active_slot(slot)) {
1832 run_active_slot(slot);
1833 if (results.curl_result != CURLE_OK) {
1834 fprintf(stderr,
1835 "PUT error: curl result=%d, HTTP code=%ld\n",
1836 results.curl_result, results.http_code);
1837 }
1838 }
1839 }
1840 strbuf_release(&buffer.buf);
1841 }
1842
1843 static int remote_exists(const char *path)
1844 {
1845 char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1846 int ret;
1847
1848 sprintf(url, "%s%s", repo->url, path);
1849
1850 switch (http_get_strbuf(url, NULL, 0)) {
1851 case HTTP_OK:
1852 ret = 1;
1853 break;
1854 case HTTP_MISSING_TARGET:
1855 ret = 0;
1856 break;
1857 case HTTP_ERROR:
1858 http_error(url, HTTP_ERROR);
1859 default:
1860 ret = -1;
1861 }
1862 free(url);
1863 return ret;
1864 }
1865
1866 static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
1867 {
1868 char *url;
1869 struct strbuf buffer = STRBUF_INIT;
1870
1871 url = xmalloc(strlen(repo->url) + strlen(path) + 1);
1872 sprintf(url, "%s%s", repo->url, path);
1873
1874 if (http_get_strbuf(url, &buffer, 0) != HTTP_OK)
1875 die("Couldn't get %s for remote symref\n%s", url,
1876 curl_errorstr);
1877 free(url);
1878
1879 free(*symref);
1880 *symref = NULL;
1881 hashclr(sha1);
1882
1883 if (buffer.len == 0)
1884 return;
1885
1886 /* If it's a symref, set the refname; otherwise try for a sha1 */
1887 if (!prefixcmp((char *)buffer.buf, "ref: ")) {
1888 *symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6);
1889 } else {
1890 get_sha1_hex(buffer.buf, sha1);
1891 }
1892
1893 strbuf_release(&buffer);
1894 }
1895
1896 static int verify_merge_base(unsigned char *head_sha1, unsigned char *branch_sha1)
1897 {
1898 struct commit *head = lookup_commit(head_sha1);
1899 struct commit *branch = lookup_commit(branch_sha1);
1900 struct commit_list *merge_bases = get_merge_bases(head, branch, 1);
1901
1902 return (merge_bases && !merge_bases->next && merge_bases->item == branch);
1903 }
1904
1905 static int delete_remote_branch(char *pattern, int force)
1906 {
1907 struct ref *refs = remote_refs;
1908 struct ref *remote_ref = NULL;
1909 unsigned char head_sha1[20];
1910 char *symref = NULL;
1911 int match;
1912 int patlen = strlen(pattern);
1913 int i;
1914 struct active_request_slot *slot;
1915 struct slot_results results;
1916 char *url;
1917
1918 /* Find the remote branch(es) matching the specified branch name */
1919 for (match = 0; refs; refs = refs->next) {
1920 char *name = refs->name;
1921 int namelen = strlen(name);
1922 if (namelen < patlen ||
1923 memcmp(name + namelen - patlen, pattern, patlen))
1924 continue;
1925 if (namelen != patlen && name[namelen - patlen - 1] != '/')
1926 continue;
1927 match++;
1928 remote_ref = refs;
1929 }
1930 if (match == 0)
1931 return error("No remote branch matches %s", pattern);
1932 if (match != 1)
1933 return error("More than one remote branch matches %s",
1934 pattern);
1935
1936 /*
1937 * Remote HEAD must be a symref (not exactly foolproof; a remote
1938 * symlink to a symref will look like a symref)
1939 */
1940 fetch_symref("HEAD", &symref, head_sha1);
1941 if (!symref)
1942 return error("Remote HEAD is not a symref");
1943
1944 /* Remote branch must not be the remote HEAD */
1945 for (i=0; symref && i<MAXDEPTH; i++) {
1946 if (!strcmp(remote_ref->name, symref))
1947 return error("Remote branch %s is the current HEAD",
1948 remote_ref->name);
1949 fetch_symref(symref, &symref, head_sha1);
1950 }
1951
1952 /* Run extra sanity checks if delete is not forced */
1953 if (!force) {
1954 /* Remote HEAD must resolve to a known object */
1955 if (symref)
1956 return error("Remote HEAD symrefs too deep");
1957 if (is_zero_sha1(head_sha1))
1958 return error("Unable to resolve remote HEAD");
1959 if (!has_sha1_file(head_sha1))
1960 return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
1961
1962 /* Remote branch must resolve to a known object */
1963 if (is_zero_sha1(remote_ref->old_sha1))
1964 return error("Unable to resolve remote branch %s",
1965 remote_ref->name);
1966 if (!has_sha1_file(remote_ref->old_sha1))
1967 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));
1968
1969 /* Remote branch must be an ancestor of remote HEAD */
1970 if (!verify_merge_base(head_sha1, remote_ref->old_sha1)) {
1971 return error("The branch '%s' is not an ancestor "
1972 "of your current HEAD.\n"
1973 "If you are sure you want to delete it,"
1974 " run:\n\t'git http-push -D %s %s'",
1975 remote_ref->name, repo->url, pattern);
1976 }
1977 }
1978
1979 /* Send delete request */
1980 fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
1981 if (dry_run)
1982 return 0;
1983 url = xmalloc(strlen(repo->url) + strlen(remote_ref->name) + 1);
1984 sprintf(url, "%s%s", repo->url, remote_ref->name);
1985 slot = get_active_slot();
1986 slot->results = &results;
1987 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1988 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1989 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1990 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_DELETE);
1991 if (start_active_slot(slot)) {
1992 run_active_slot(slot);
1993 free(url);
1994 if (results.curl_result != CURLE_OK)
1995 return error("DELETE request failed (%d/%ld)\n",
1996 results.curl_result, results.http_code);
1997 } else {
1998 free(url);
1999 return error("Unable to start DELETE request");
2000 }
2001
2002 return 0;
2003 }
2004
2005 void run_request_queue(void)
2006 {
2007 #ifdef USE_CURL_MULTI
2008 is_running_queue = 1;
2009 fill_active_slots();
2010 add_fill_function(NULL, fill_active_slot);
2011 #endif
2012 do {
2013 finish_all_active_slots();
2014 #ifdef USE_CURL_MULTI
2015 fill_active_slots();
2016 #endif
2017 } while (request_queue_head && !aborted);
2018
2019 #ifdef USE_CURL_MULTI
2020 is_running_queue = 0;
2021 #endif
2022 }
2023
2024 int main(int argc, char **argv)
2025 {
2026 struct transfer_request *request;
2027 struct transfer_request *next_request;
2028 int nr_refspec = 0;
2029 char **refspec = NULL;
2030 struct remote_lock *ref_lock = NULL;
2031 struct remote_lock *info_ref_lock = NULL;
2032 struct rev_info revs;
2033 int delete_branch = 0;
2034 int force_delete = 0;
2035 int objects_to_send;
2036 int rc = 0;
2037 int i;
2038 int new_refs;
2039 struct ref *ref, *local_refs;
2040 struct remote *remote;
2041 char *rewritten_url = NULL;
2042
2043 git_extract_argv0_path(argv[0]);
2044
2045 setup_git_directory();
2046
2047 repo = xcalloc(sizeof(*repo), 1);
2048
2049 argv++;
2050 for (i = 1; i < argc; i++, argv++) {
2051 char *arg = *argv;
2052
2053 if (*arg == '-') {
2054 if (!strcmp(arg, "--all")) {
2055 push_all = MATCH_REFS_ALL;
2056 continue;
2057 }
2058 if (!strcmp(arg, "--force")) {
2059 force_all = 1;
2060 continue;
2061 }
2062 if (!strcmp(arg, "--dry-run")) {
2063 dry_run = 1;
2064 continue;
2065 }
2066 if (!strcmp(arg, "--verbose")) {
2067 push_verbosely = 1;
2068 http_is_verbose = 1;
2069 continue;
2070 }
2071 if (!strcmp(arg, "-d")) {
2072 delete_branch = 1;
2073 continue;
2074 }
2075 if (!strcmp(arg, "-D")) {
2076 delete_branch = 1;
2077 force_delete = 1;
2078 continue;
2079 }
2080 }
2081 if (!repo->url) {
2082 char *path = strstr(arg, "//");
2083 repo->url = arg;
2084 repo->path_len = strlen(arg);
2085 if (path) {
2086 repo->path = strchr(path+2, '/');
2087 if (repo->path)
2088 repo->path_len = strlen(repo->path);
2089 }
2090 continue;
2091 }
2092 refspec = argv;
2093 nr_refspec = argc - i;
2094 break;
2095 }
2096
2097 #ifndef USE_CURL_MULTI
2098 die("git-push is not available for http/https repository when not compiled with USE_CURL_MULTI");
2099 #endif
2100
2101 if (!repo->url)
2102 usage(http_push_usage);
2103
2104 if (delete_branch && nr_refspec != 1)
2105 die("You must specify only one branch name when deleting a remote branch");
2106
2107 memset(remote_dir_exists, -1, 256);
2108
2109 /*
2110 * Create a minimum remote by hand to give to http_init(),
2111 * primarily to allow it to look at the URL.
2112 */
2113 remote = xcalloc(sizeof(*remote), 1);
2114 ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
2115 remote->url[remote->url_nr++] = repo->url;
2116 http_init(remote);
2117
2118 if (repo->url && repo->url[strlen(repo->url)-1] != '/') {
2119 rewritten_url = xmalloc(strlen(repo->url)+2);
2120 strcpy(rewritten_url, repo->url);
2121 strcat(rewritten_url, "/");
2122 repo->path = rewritten_url + (repo->path - repo->url);
2123 repo->path_len++;
2124 repo->url = rewritten_url;
2125 }
2126
2127 #ifdef USE_CURL_MULTI
2128 is_running_queue = 0;
2129 #endif
2130
2131 /* Verify DAV compliance/lock support */
2132 if (!locking_available()) {
2133 rc = 1;
2134 goto cleanup;
2135 }
2136
2137 sigchain_push_common(remove_locks_on_signal);
2138
2139 /* Check whether the remote has server info files */
2140 repo->can_update_info_refs = 0;
2141 repo->has_info_refs = remote_exists("info/refs");
2142 repo->has_info_packs = remote_exists("objects/info/packs");
2143 if (repo->has_info_refs) {
2144 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
2145 if (info_ref_lock)
2146 repo->can_update_info_refs = 1;
2147 else {
2148 error("cannot lock existing info/refs");
2149 rc = 1;
2150 goto cleanup;
2151 }
2152 }
2153 if (repo->has_info_packs)
2154 fetch_indices();
2155
2156 /* Get a list of all local and remote heads to validate refspecs */
2157 local_refs = get_local_heads();
2158 fprintf(stderr, "Fetching remote heads...\n");
2159 get_dav_remote_heads();
2160 run_request_queue();
2161
2162 /* Remove a remote branch if -d or -D was specified */
2163 if (delete_branch) {
2164 if (delete_remote_branch(refspec[0], force_delete) == -1)
2165 fprintf(stderr, "Unable to delete remote branch %s\n",
2166 refspec[0]);
2167 goto cleanup;
2168 }
2169
2170 /* match them up */
2171 if (!remote_tail)
2172 remote_tail = &remote_refs;
2173 if (match_refs(local_refs, remote_refs, &remote_tail,
2174 nr_refspec, (const char **) refspec, push_all)) {
2175 rc = -1;
2176 goto cleanup;
2177 }
2178 if (!remote_refs) {
2179 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
2180 rc = 0;
2181 goto cleanup;
2182 }
2183
2184 new_refs = 0;
2185 for (ref = remote_refs; ref; ref = ref->next) {
2186 char old_hex[60], *new_hex;
2187 const char *commit_argv[4];
2188 int commit_argc;
2189 char *new_sha1_hex, *old_sha1_hex;
2190
2191 if (!ref->peer_ref)
2192 continue;
2193
2194 if (is_zero_sha1(ref->peer_ref->new_sha1)) {
2195 if (delete_remote_branch(ref->name, 1) == -1) {
2196 error("Could not remove %s", ref->name);
2197 rc = -4;
2198 }
2199 new_refs++;
2200 continue;
2201 }
2202
2203 if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
2204 if (push_verbosely || 1)
2205 fprintf(stderr, "'%s': up-to-date\n", ref->name);
2206 continue;
2207 }
2208
2209 if (!force_all &&
2210 !is_zero_sha1(ref->old_sha1) &&
2211 !ref->force) {
2212 if (!has_sha1_file(ref->old_sha1) ||
2213 !ref_newer(ref->peer_ref->new_sha1,
2214 ref->old_sha1)) {
2215 /*
2216 * We do not have the remote ref, or
2217 * we know that the remote ref is not
2218 * an ancestor of what we are trying to
2219 * push. Either way this can be losing
2220 * commits at the remote end and likely
2221 * we were not up to date to begin with.
2222 */
2223 error("remote '%s' is not an ancestor of\n"
2224 "local '%s'.\n"
2225 "Maybe you are not up-to-date and "
2226 "need to pull first?",
2227 ref->name,
2228 ref->peer_ref->name);
2229 rc = -2;
2230 continue;
2231 }
2232 }
2233 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
2234 new_refs++;
2235 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
2236 new_hex = sha1_to_hex(ref->new_sha1);
2237
2238 fprintf(stderr, "updating '%s'", ref->name);
2239 if (strcmp(ref->name, ref->peer_ref->name))
2240 fprintf(stderr, " using '%s'", ref->peer_ref->name);
2241 fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
2242 if (dry_run)
2243 continue;
2244
2245 /* Lock remote branch ref */
2246 ref_lock = lock_remote(ref->name, LOCK_TIME);
2247 if (ref_lock == NULL) {
2248 fprintf(stderr, "Unable to lock remote branch %s\n",
2249 ref->name);
2250 rc = 1;
2251 continue;
2252 }
2253
2254 /* Set up revision info for this refspec */
2255 commit_argc = 3;
2256 new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
2257 old_sha1_hex = NULL;
2258 commit_argv[1] = "--objects";
2259 commit_argv[2] = new_sha1_hex;
2260 if (!push_all && !is_zero_sha1(ref->old_sha1)) {
2261 old_sha1_hex = xmalloc(42);
2262 sprintf(old_sha1_hex, "^%s",
2263 sha1_to_hex(ref->old_sha1));
2264 commit_argv[3] = old_sha1_hex;
2265 commit_argc++;
2266 }
2267 init_revisions(&revs, setup_git_directory());
2268 setup_revisions(commit_argc, commit_argv, &revs, NULL);
2269 revs.edge_hint = 0; /* just in case */
2270 free(new_sha1_hex);
2271 if (old_sha1_hex) {
2272 free(old_sha1_hex);
2273 commit_argv[1] = NULL;
2274 }
2275
2276 /* Generate a list of objects that need to be pushed */
2277 pushing = 0;
2278 if (prepare_revision_walk(&revs))
2279 die("revision walk setup failed");
2280 mark_edges_uninteresting(revs.commits, &revs, NULL);
2281 objects_to_send = get_delta(&revs, ref_lock);
2282 finish_all_active_slots();
2283
2284 /* Push missing objects to remote, this would be a
2285 convenient time to pack them first if appropriate. */
2286 pushing = 1;
2287 if (objects_to_send)
2288 fprintf(stderr, " sending %d objects\n",
2289 objects_to_send);
2290
2291 run_request_queue();
2292
2293 /* Update the remote branch if all went well */
2294 if (aborted || !update_remote(ref->new_sha1, ref_lock))
2295 rc = 1;
2296
2297 if (!rc)
2298 fprintf(stderr, " done\n");
2299 unlock_remote(ref_lock);
2300 check_locks();
2301 }
2302
2303 /* Update remote server info if appropriate */
2304 if (repo->has_info_refs && new_refs) {
2305 if (info_ref_lock && repo->can_update_info_refs) {
2306 fprintf(stderr, "Updating remote server info\n");
2307 if (!dry_run)
2308 update_remote_info_refs(info_ref_lock);
2309 } else {
2310 fprintf(stderr, "Unable to update server info\n");
2311 }
2312 }
2313
2314 cleanup:
2315 free(rewritten_url);
2316 if (info_ref_lock)
2317 unlock_remote(info_ref_lock);
2318 free(repo);
2319
2320 http_cleanup();
2321
2322 request = request_queue_head;
2323 while (request != NULL) {
2324 next_request = request->next;
2325 release_request(request);
2326 request = next_request;
2327 }
2328
2329 return rc;
2330 }
Alternate source for your git.git needs