http-push: avoid invalid memory accesses
[git/git.git] / http-push.c
CommitLineData
58e60dd2
NH
1#include "cache.h"
2#include "commit.h"
3#include "pack.h"
58e60dd2
NH
4#include "tag.h"
5#include "blob.h"
29508e1e 6#include "http.h"
aa1dbc98 7#include "refs.h"
c4e05b1a 8#include "diff.h"
aa1dbc98 9#include "revision.h"
3dfaf7bc 10#include "exec_cmd.h"
6b62816c 11#include "remote.h"
29508e1e 12
bee8e79d 13#include <expat.h>
58e60dd2
NH
14
15static const char http_push_usage[] =
fe5d1d3e 16"git-http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
58e60dd2 17
92e2eb9c
JS
18#ifndef XML_STATUS_OK
19enum XML_Status {
20 XML_STATUS_OK = 1,
21 XML_STATUS_ERROR = 0
22};
23#define XML_STATUS_OK 1
24#define XML_STATUS_ERROR 0
25#endif
26
197e8951 27#define PREV_BUF_SIZE 4096
58e60dd2
NH
28#define RANGE_HEADER_SIZE 30
29
acf59575 30/* DAV methods */
58e60dd2
NH
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"
3dfaf7bc 37#define DAV_DELETE "DELETE"
acf59575
NH
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"
aa1dbc98
NH
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"
acf59575
NH
54
55/* DAV request body templates */
aa1dbc98
NH
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>"
58e60dd2
NH
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
75187c9d
NH
60#define LOCK_TIME 600
61#define LOCK_REFRESH 30
62
1b65a5aa 63/* bits #0-15 in revision.h */
aa1dbc98 64
1b65a5aa
JH
65#define LOCAL (1u<<16)
66#define REMOTE (1u<<17)
67#define FETCHING (1u<<18)
68#define PUSHING (1u<<19)
aa1dbc98 69
3dfaf7bc
NH
70/* We allow "recursive" symbolic refs. Only within reason, though */
71#define MAXDEPTH 5
72
96f1e58f
DR
73static int pushing;
74static int aborted;
a3c57c9a 75static signed char remote_dir_exists[256];
58e60dd2 76
58e60dd2 77static struct curl_slist *no_pragma_header;
58e60dd2 78
96f1e58f 79static int push_verbosely;
28b9d6e5 80static int push_all = MATCH_REFS_NONE;
96f1e58f 81static int force_all;
fe5d1d3e 82static int dry_run;
58e60dd2 83
96f1e58f 84static struct object_list *objects;
aa1dbc98 85
58e60dd2
NH
86struct repo
87{
88 char *url;
aa1dbc98 89 int path_len;
197e8951
NH
90 int has_info_refs;
91 int can_update_info_refs;
92 int has_info_packs;
58e60dd2 93 struct packed_git *packs;
512d632c 94 struct remote_lock *locks;
58e60dd2
NH
95};
96
96f1e58f 97static struct repo *remote;
58e60dd2
NH
98
99enum transfer_state {
197e8951
NH
100 NEED_FETCH,
101 RUN_FETCH_LOOSE,
102 RUN_FETCH_PACKED,
58e60dd2
NH
103 NEED_PUSH,
104 RUN_MKCOL,
105 RUN_PUT,
106 RUN_MOVE,
107 ABORTED,
108 COMPLETE,
109};
110
111struct transfer_request
112{
aa1dbc98 113 struct object *obj;
58e60dd2
NH
114 char *url;
115 char *dest;
aa1dbc98 116 struct remote_lock *lock;
58e60dd2
NH
117 struct curl_slist *headers;
118 struct buffer buffer;
119 char filename[PATH_MAX];
120 char tmpfile[PATH_MAX];
197e8951
NH
121 int local_fileno;
122 FILE *local_stream;
58e60dd2
NH
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 SHA_CTX c;
129 z_stream stream;
130 int zret;
131 int rename;
197e8951 132 void *userData;
58e60dd2
NH
133 struct active_request_slot *slot;
134 struct transfer_request *next;
135};
136
96f1e58f 137static struct transfer_request *request_queue_head;
58e60dd2 138
acf59575
NH
139struct 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
aa1dbc98 148struct remote_lock
26349b2e 149{
75187c9d 150 char *url;
26349b2e 151 char *owner;
75187c9d 152 char *token;
26349b2e
NH
153 time_t start_time;
154 long timeout;
75187c9d 155 int refreshing;
aa1dbc98
NH
156 struct remote_lock *next;
157};
158
3030baa7
NH
159/* Flags that control remote_ls processing */
160#define PROCESS_FILES (1u << 0)
161#define PROCESS_DIRS (1u << 1)
162#define RECURSIVE (1u << 2)
163
164/* Flags that remote_ls passes to callback functions */
165#define IS_DIR (1u << 0)
166
167struct remote_ls_ctx
aa1dbc98 168{
3030baa7
NH
169 char *path;
170 void (*userFunc)(struct remote_ls_ctx *ls);
171 void *userData;
172 int flags;
173 char *dentry_name;
174 int dentry_flags;
175 struct remote_ls_ctx *parent;
26349b2e
NH
176};
177
29508e1e 178static void finish_request(struct transfer_request *request);
197e8951 179static void release_request(struct transfer_request *request);
58e60dd2 180
29508e1e 181static void process_response(void *callback_data)
58e60dd2 182{
29508e1e
NH
183 struct transfer_request *request =
184 (struct transfer_request *)callback_data;
58e60dd2 185
29508e1e 186 finish_request(request);
58e60dd2
NH
187}
188
dd8239f9 189#ifdef USE_CURL_MULTI
197e8951
NH
190static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
191 void *data)
192{
193 unsigned char expn[4096];
194 size_t size = eltsize * nmemb;
195 int posn = 0;
196 struct transfer_request *request = (struct transfer_request *)data;
197 do {
93822c22 198 ssize_t retval = xwrite(request->local_fileno,
1d7f171c 199 (char *) ptr + posn, size - posn);
197e8951
NH
200 if (retval < 0)
201 return posn;
202 posn += retval;
203 } while (posn < size);
204
205 request->stream.avail_in = size;
206 request->stream.next_in = ptr;
207 do {
208 request->stream.next_out = expn;
209 request->stream.avail_out = sizeof(expn);
210 request->zret = inflate(&request->stream, Z_SYNC_FLUSH);
211 SHA1_Update(&request->c, expn,
212 sizeof(expn) - request->stream.avail_out);
213 } while (request->stream.avail_in && request->zret == Z_OK);
214 data_received++;
215 return size;
216}
217
218static void start_fetch_loose(struct transfer_request *request)
219{
220 char *hex = sha1_to_hex(request->obj->sha1);
221 char *filename;
222 char prevfile[PATH_MAX];
223 char *url;
224 char *posn;
225 int prevlocal;
226 unsigned char prev_buf[PREV_BUF_SIZE];
227 ssize_t prev_read = 0;
228 long prev_posn = 0;
229 char range[RANGE_HEADER_SIZE];
230 struct curl_slist *range_header = NULL;
231 struct active_request_slot *slot;
232
233 filename = sha1_file_name(request->obj->sha1);
234 snprintf(request->filename, sizeof(request->filename), "%s", filename);
235 snprintf(request->tmpfile, sizeof(request->tmpfile),
236 "%s.temp", filename);
237
238 snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename);
239 unlink(prevfile);
240 rename(request->tmpfile, prevfile);
241 unlink(request->tmpfile);
242
243 if (request->local_fileno != -1)
244 error("fd leakage in start: %d", request->local_fileno);
245 request->local_fileno = open(request->tmpfile,
246 O_WRONLY | O_CREAT | O_EXCL, 0666);
247 /* This could have failed due to the "lazy directory creation";
248 * try to mkdir the last path component.
249 */
250 if (request->local_fileno < 0 && errno == ENOENT) {
251 char *dir = strrchr(request->tmpfile, '/');
252 if (dir) {
253 *dir = 0;
254 mkdir(request->tmpfile, 0777);
255 *dir = '/';
256 }
257 request->local_fileno = open(request->tmpfile,
258 O_WRONLY | O_CREAT | O_EXCL, 0666);
259 }
260
261 if (request->local_fileno < 0) {
262 request->state = ABORTED;
263 error("Couldn't create temporary file %s for %s: %s",
264 request->tmpfile, request->filename, strerror(errno));
265 return;
266 }
267
268 memset(&request->stream, 0, sizeof(request->stream));
269
270 inflateInit(&request->stream);
271
272 SHA1_Init(&request->c);
273
274 url = xmalloc(strlen(remote->url) + 50);
275 request->url = xmalloc(strlen(remote->url) + 50);
276 strcpy(url, remote->url);
277 posn = url + strlen(remote->url);
278 strcpy(posn, "objects/");
279 posn += 8;
280 memcpy(posn, hex, 2);
281 posn += 2;
282 *(posn++) = '/';
283 strcpy(posn, hex + 2);
284 strcpy(request->url, url);
285
286 /* If a previous temp file is present, process what was already
287 fetched. */
288 prevlocal = open(prevfile, O_RDONLY);
289 if (prevlocal != -1) {
290 do {
93d26e4c 291 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
197e8951
NH
292 if (prev_read>0) {
293 if (fwrite_sha1_file(prev_buf,
294 1,
295 prev_read,
296 request) == prev_read) {
297 prev_posn += prev_read;
298 } else {
299 prev_read = -1;
300 }
301 }
302 } while (prev_read > 0);
303 close(prevlocal);
304 }
305 unlink(prevfile);
306
307 /* Reset inflate/SHA1 if there was an error reading the previous temp
308 file; also rewind to the beginning of the local file. */
309 if (prev_read == -1) {
310 memset(&request->stream, 0, sizeof(request->stream));
311 inflateInit(&request->stream);
312 SHA1_Init(&request->c);
313 if (prev_posn>0) {
314 prev_posn = 0;
b5da2467 315 lseek(request->local_fileno, 0, SEEK_SET);
197e8951
NH
316 ftruncate(request->local_fileno, 0);
317 }
318 }
319
320 slot = get_active_slot();
321 slot->callback_func = process_response;
322 slot->callback_data = request;
323 request->slot = slot;
324
325 curl_easy_setopt(slot->curl, CURLOPT_FILE, request);
326 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
327 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
328 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
329 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
330
331 /* If we have successfully processed data from a previous fetch
332 attempt, only fetch the data we don't already have. */
333 if (prev_posn>0) {
334 if (push_verbosely)
335 fprintf(stderr,
336 "Resuming fetch of object %s at byte %ld\n",
337 hex, prev_posn);
338 sprintf(range, "Range: bytes=%ld-", prev_posn);
339 range_header = curl_slist_append(range_header, range);
340 curl_easy_setopt(slot->curl,
341 CURLOPT_HTTPHEADER, range_header);
342 }
343
344 /* Try to get the request started, abort the request on error */
345 request->state = RUN_FETCH_LOOSE;
346 if (!start_active_slot(slot)) {
347 fprintf(stderr, "Unable to start GET request\n");
348 remote->can_update_info_refs = 0;
349 release_request(request);
350 }
351}
352
dd8239f9
JH
353static void start_mkcol(struct transfer_request *request)
354{
355 char *hex = sha1_to_hex(request->obj->sha1);
356 struct active_request_slot *slot;
357 char *posn;
358
359 request->url = xmalloc(strlen(remote->url) + 13);
360 strcpy(request->url, remote->url);
361 posn = request->url + strlen(remote->url);
362 strcpy(posn, "objects/");
363 posn += 8;
364 memcpy(posn, hex, 2);
365 posn += 2;
366 strcpy(posn, "/");
367
368 slot = get_active_slot();
369 slot->callback_func = process_response;
370 slot->callback_data = request;
371 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
372 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
373 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
374 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
375 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
376
377 if (start_active_slot(slot)) {
378 request->slot = slot;
379 request->state = RUN_MKCOL;
380 } else {
381 request->state = ABORTED;
382 free(request->url);
383 request->url = NULL;
384 }
385}
386#endif
387
197e8951
NH
388static void start_fetch_packed(struct transfer_request *request)
389{
390 char *url;
391 struct packed_git *target;
392 FILE *packfile;
393 char *filename;
394 long prev_posn = 0;
395 char range[RANGE_HEADER_SIZE];
396 struct curl_slist *range_header = NULL;
397
398 struct transfer_request *check_request = request_queue_head;
399 struct active_request_slot *slot;
400
401 target = find_sha1_pack(request->obj->sha1, remote->packs);
402 if (!target) {
403 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
404 remote->can_update_info_refs = 0;
405 release_request(request);
406 return;
407 }
408
409 fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
410 fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
411
412 filename = sha1_pack_name(target->sha1);
413 snprintf(request->filename, sizeof(request->filename), "%s", filename);
414 snprintf(request->tmpfile, sizeof(request->tmpfile),
415 "%s.temp", filename);
416
417 url = xmalloc(strlen(remote->url) + 64);
418 sprintf(url, "%sobjects/pack/pack-%s.pack",
419 remote->url, sha1_to_hex(target->sha1));
420
421 /* Make sure there isn't another open request for this pack */
422 while (check_request) {
423 if (check_request->state == RUN_FETCH_PACKED &&
424 !strcmp(check_request->url, url)) {
425 free(url);
426 release_request(request);
427 return;
428 }
429 check_request = check_request->next;
430 }
431
432 packfile = fopen(request->tmpfile, "a");
433 if (!packfile) {
434 fprintf(stderr, "Unable to open local file %s for pack",
84ef0338 435 request->tmpfile);
197e8951
NH
436 remote->can_update_info_refs = 0;
437 free(url);
438 return;
439 }
440
441 slot = get_active_slot();
442 slot->callback_func = process_response;
443 slot->callback_data = request;
444 request->slot = slot;
445 request->local_stream = packfile;
446 request->userData = target;
447
448 request->url = url;
449 curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
450 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
451 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
452 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
453 slot->local = packfile;
454
455 /* If there is data present from a previous transfer attempt,
456 resume where it left off */
457 prev_posn = ftell(packfile);
458 if (prev_posn>0) {
459 if (push_verbosely)
460 fprintf(stderr,
461 "Resuming fetch of pack %s at byte %ld\n",
462 sha1_to_hex(target->sha1), prev_posn);
463 sprintf(range, "Range: bytes=%ld-", prev_posn);
464 range_header = curl_slist_append(range_header, range);
465 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
466 }
467
468 /* Try to get the request started, abort the request on error */
469 request->state = RUN_FETCH_PACKED;
470 if (!start_active_slot(slot)) {
471 fprintf(stderr, "Unable to start GET request\n");
472 remote->can_update_info_refs = 0;
473 release_request(request);
474 }
475}
476
58e60dd2
NH
477static void start_put(struct transfer_request *request)
478{
aa1dbc98 479 char *hex = sha1_to_hex(request->obj->sha1);
58e60dd2
NH
480 struct active_request_slot *slot;
481 char *posn;
21666f1a 482 enum object_type type;
58e60dd2
NH
483 char hdr[50];
484 void *unpacked;
485 unsigned long len;
486 int hdrlen;
487 ssize_t size;
488 z_stream stream;
489
21666f1a
NP
490 unpacked = read_sha1_file(request->obj->sha1, &type, &len);
491 hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
58e60dd2
NH
492
493 /* Set it up */
494 memset(&stream, 0, sizeof(stream));
12f6c308 495 deflateInit(&stream, zlib_compression_level);
58e60dd2 496 size = deflateBound(&stream, len + hdrlen);
028c2976
MH
497 strbuf_init(&request->buffer.buf, size);
498 request->buffer.posn = 0;
58e60dd2
NH
499
500 /* Compress it */
028c2976 501 stream.next_out = (unsigned char *)request->buffer.buf.buf;
58e60dd2
NH
502 stream.avail_out = size;
503
504 /* First header.. */
505 stream.next_in = (void *)hdr;
506 stream.avail_in = hdrlen;
507 while (deflate(&stream, 0) == Z_OK)
508 /* nothing */;
509
510 /* Then the data itself.. */
511 stream.next_in = unpacked;
512 stream.avail_in = len;
513 while (deflate(&stream, Z_FINISH) == Z_OK)
514 /* nothing */;
515 deflateEnd(&stream);
516 free(unpacked);
517
028c2976 518 request->buffer.buf.len = stream.total_out;
58e60dd2 519
a6080a0a 520 request->url = xmalloc(strlen(remote->url) +
26349b2e 521 strlen(request->lock->token) + 51);
58e60dd2
NH
522 strcpy(request->url, remote->url);
523 posn = request->url + strlen(remote->url);
524 strcpy(posn, "objects/");
525 posn += 8;
526 memcpy(posn, hex, 2);
527 posn += 2;
528 *(posn++) = '/';
529 strcpy(posn, hex + 2);
530 request->dest = xmalloc(strlen(request->url) + 14);
531 sprintf(request->dest, "Destination: %s", request->url);
532 posn += 38;
1e8d3045 533 *(posn++) = '_';
26349b2e 534 strcpy(posn, request->lock->token);
58e60dd2
NH
535
536 slot = get_active_slot();
29508e1e
NH
537 slot->callback_func = process_response;
538 slot->callback_data = request;
58e60dd2 539 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
028c2976 540 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.buf.len);
58e60dd2
NH
541 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
542 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
543 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
544 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
545 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
546 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
547 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
548
549 if (start_active_slot(slot)) {
550 request->slot = slot;
551 request->state = RUN_PUT;
552 } else {
553 request->state = ABORTED;
554 free(request->url);
7b899967 555 request->url = NULL;
58e60dd2
NH
556 }
557}
558
559static void start_move(struct transfer_request *request)
560{
561 struct active_request_slot *slot;
562 struct curl_slist *dav_headers = NULL;
563
564 slot = get_active_slot();
29508e1e
NH
565 slot->callback_func = process_response;
566 slot->callback_data = request;
58e60dd2
NH
567 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
568 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
569 dav_headers = curl_slist_append(dav_headers, request->dest);
570 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
571 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
572 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
573 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
574
575 if (start_active_slot(slot)) {
576 request->slot = slot;
577 request->state = RUN_MOVE;
578 } else {
579 request->state = ABORTED;
580 free(request->url);
7b899967 581 request->url = NULL;
58e60dd2
NH
582 }
583}
584
512d632c 585static int refresh_lock(struct remote_lock *lock)
75187c9d
NH
586{
587 struct active_request_slot *slot;
baa7b67d 588 struct slot_results results;
75187c9d
NH
589 char *if_header;
590 char timeout_header[25];
591 struct curl_slist *dav_headers = NULL;
512d632c 592 int rc = 0;
75187c9d 593
512d632c 594 lock->refreshing = 1;
75187c9d 595
512d632c
NH
596 if_header = xmalloc(strlen(lock->token) + 25);
597 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
598 sprintf(timeout_header, "Timeout: Second-%ld", lock->timeout);
599 dav_headers = curl_slist_append(dav_headers, if_header);
600 dav_headers = curl_slist_append(dav_headers, timeout_header);
75187c9d 601
512d632c
NH
602 slot = get_active_slot();
603 slot->results = &results;
604 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
605 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
606 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
607 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
608 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
75187c9d 609
512d632c
NH
610 if (start_active_slot(slot)) {
611 run_active_slot(slot);
612 if (results.curl_result != CURLE_OK) {
613 fprintf(stderr, "LOCK HTTP error %ld\n",
614 results.http_code);
615 } else {
616 lock->start_time = time(NULL);
617 rc = 1;
618 }
619 }
aa1dbc98 620
512d632c
NH
621 lock->refreshing = 0;
622 curl_slist_free_all(dav_headers);
623 free(if_header);
aa1dbc98 624
512d632c
NH
625 return rc;
626}
627
ec26b4d6 628static void check_locks(void)
512d632c
NH
629{
630 struct remote_lock *lock = remote->locks;
631 time_t current_time = time(NULL);
632 int time_remaining;
633
634 while (lock) {
635 time_remaining = lock->start_time + lock->timeout -
636 current_time;
637 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
638 if (!refresh_lock(lock)) {
639 fprintf(stderr,
640 "Unable to refresh lock for %s\n",
641 lock->url);
642 aborted = 1;
643 return;
aa1dbc98 644 }
75187c9d 645 }
512d632c 646 lock = lock->next;
75187c9d 647 }
aa1dbc98 648}
75187c9d 649
aa1dbc98
NH
650static void release_request(struct transfer_request *request)
651{
652 struct transfer_request *entry = request_queue_head;
653
654 if (request == request_queue_head) {
655 request_queue_head = request->next;
656 } else {
657 while (entry->next != NULL && entry->next != request)
658 entry = entry->next;
659 if (entry->next == request)
660 entry->next = entry->next->next;
661 }
662
197e8951
NH
663 if (request->local_fileno != -1)
664 close(request->local_fileno);
665 if (request->local_stream)
666 fclose(request->local_stream);
aa1dbc98
NH
667 if (request->url != NULL)
668 free(request->url);
669 free(request);
75187c9d
NH
670}
671
58e60dd2
NH
672static void finish_request(struct transfer_request *request)
673{
197e8951
NH
674 struct stat st;
675 struct packed_git *target;
676 struct packed_git **lst;
677
678 request->curl_result = request->slot->curl_result;
58e60dd2
NH
679 request->http_code = request->slot->http_code;
680 request->slot = NULL;
75187c9d 681
aa1dbc98 682 /* Keep locks active */
512d632c 683 check_locks();
75187c9d 684
58e60dd2
NH
685 if (request->headers != NULL)
686 curl_slist_free_all(request->headers);
7b899967
NH
687
688 /* URL is reused for MOVE after PUT */
689 if (request->state != RUN_PUT) {
690 free(request->url);
691 request->url = NULL;
aa1dbc98 692 }
7b899967 693
aa1dbc98 694 if (request->state == RUN_MKCOL) {
58e60dd2
NH
695 if (request->curl_result == CURLE_OK ||
696 request->http_code == 405) {
aa1dbc98 697 remote_dir_exists[request->obj->sha1[0]] = 1;
58e60dd2
NH
698 start_put(request);
699 } else {
700 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
aa1dbc98 701 sha1_to_hex(request->obj->sha1),
58e60dd2
NH
702 request->curl_result, request->http_code);
703 request->state = ABORTED;
704 aborted = 1;
705 }
706 } else if (request->state == RUN_PUT) {
707 if (request->curl_result == CURLE_OK) {
708 start_move(request);
709 } else {
710 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
aa1dbc98 711 sha1_to_hex(request->obj->sha1),
58e60dd2
NH
712 request->curl_result, request->http_code);
713 request->state = ABORTED;
714 aborted = 1;
715 }
716 } else if (request->state == RUN_MOVE) {
717 if (request->curl_result == CURLE_OK) {
1a703cba
NH
718 if (push_verbosely)
719 fprintf(stderr, " sent %s\n",
720 sha1_to_hex(request->obj->sha1));
aa1dbc98
NH
721 request->obj->flags |= REMOTE;
722 release_request(request);
58e60dd2
NH
723 } else {
724 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
aa1dbc98 725 sha1_to_hex(request->obj->sha1),
58e60dd2
NH
726 request->curl_result, request->http_code);
727 request->state = ABORTED;
728 aborted = 1;
729 }
197e8951
NH
730 } else if (request->state == RUN_FETCH_LOOSE) {
731 fchmod(request->local_fileno, 0444);
732 close(request->local_fileno); request->local_fileno = -1;
733
734 if (request->curl_result != CURLE_OK &&
735 request->http_code != 416) {
736 if (stat(request->tmpfile, &st) == 0) {
737 if (st.st_size == 0)
738 unlink(request->tmpfile);
739 }
740 } else {
741 if (request->http_code == 416)
742 fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
743
744 inflateEnd(&request->stream);
745 SHA1_Final(request->real_sha1, &request->c);
746 if (request->zret != Z_STREAM_END) {
747 unlink(request->tmpfile);
a89fccd2 748 } else if (hashcmp(request->obj->sha1, request->real_sha1)) {
197e8951
NH
749 unlink(request->tmpfile);
750 } else {
751 request->rename =
752 move_temp_to_file(
753 request->tmpfile,
754 request->filename);
755 if (request->rename == 0) {
756 request->obj->flags |= (LOCAL | REMOTE);
757 }
758 }
759 }
760
761 /* Try fetching packed if necessary */
762 if (request->obj->flags & LOCAL)
763 release_request(request);
764 else
765 start_fetch_packed(request);
766
767 } else if (request->state == RUN_FETCH_PACKED) {
768 if (request->curl_result != CURLE_OK) {
769 fprintf(stderr, "Unable to get pack file %s\n%s",
770 request->url, curl_errorstr);
771 remote->can_update_info_refs = 0;
772 } else {
1c23d794
SP
773 off_t pack_size = ftell(request->local_stream);
774
197e8951
NH
775 fclose(request->local_stream);
776 request->local_stream = NULL;
777 if (!move_temp_to_file(request->tmpfile,
778 request->filename)) {
779 target = (struct packed_git *)request->userData;
1c23d794 780 target->pack_size = pack_size;
197e8951
NH
781 lst = &remote->packs;
782 while (*lst != target)
783 lst = &((*lst)->next);
784 *lst = (*lst)->next;
785
786 if (!verify_pack(target, 0))
787 install_packed_git(target);
788 else
789 remote->can_update_info_refs = 0;
790 }
791 }
792 release_request(request);
58e60dd2
NH
793 }
794}
795
b3ca4e4e 796#ifdef USE_CURL_MULTI
fc57b6aa 797static int fill_active_slot(void *unused)
58e60dd2
NH
798{
799 struct transfer_request *request = request_queue_head;
58e60dd2
NH
800
801 if (aborted)
45c17412 802 return 0;
58e60dd2 803
45c17412 804 for (request = request_queue_head; request; request = request->next) {
197e8951
NH
805 if (request->state == NEED_FETCH) {
806 start_fetch_loose(request);
45c17412 807 return 1;
197e8951 808 } else if (pushing && request->state == NEED_PUSH) {
aa1dbc98 809 if (remote_dir_exists[request->obj->sha1[0]] == 1) {
0dd276b8 810 start_put(request);
aa1dbc98 811 } else {
0dd276b8 812 start_mkcol(request);
aa1dbc98 813 }
45c17412 814 return 1;
58e60dd2 815 }
aa1dbc98 816 }
45c17412 817 return 0;
58e60dd2 818}
b3ca4e4e 819#endif
58e60dd2 820
aa1dbc98
NH
821static void get_remote_object_list(unsigned char parent);
822
197e8951
NH
823static void add_fetch_request(struct object *obj)
824{
825 struct transfer_request *request;
826
827 check_locks();
828
829 /*
830 * Don't fetch the object if it's known to exist locally
831 * or is already in the request queue
832 */
833 if (remote_dir_exists[obj->sha1[0]] == -1)
834 get_remote_object_list(obj->sha1[0]);
835 if (obj->flags & (LOCAL | FETCHING))
836 return;
837
838 obj->flags |= FETCHING;
839 request = xmalloc(sizeof(*request));
840 request->obj = obj;
841 request->url = NULL;
842 request->lock = NULL;
843 request->headers = NULL;
844 request->local_fileno = -1;
845 request->local_stream = NULL;
846 request->state = NEED_FETCH;
847 request->next = request_queue_head;
848 request_queue_head = request;
849
b3ca4e4e 850#ifdef USE_CURL_MULTI
197e8951
NH
851 fill_active_slots();
852 step_active_slots();
b3ca4e4e 853#endif
197e8951
NH
854}
855
1a703cba 856static int add_send_request(struct object *obj, struct remote_lock *lock)
58e60dd2
NH
857{
858 struct transfer_request *request = request_queue_head;
58e60dd2 859 struct packed_git *target;
58e60dd2 860
512d632c
NH
861 /* Keep locks active */
862 check_locks();
863
aa1dbc98
NH
864 /*
865 * Don't push the object if it's known to exist on the remote
866 * or is already in the request queue
867 */
868 if (remote_dir_exists[obj->sha1[0]] == -1)
869 get_remote_object_list(obj->sha1[0]);
870 if (obj->flags & (REMOTE | PUSHING))
1a703cba 871 return 0;
aa1dbc98
NH
872 target = find_sha1_pack(obj->sha1, remote->packs);
873 if (target) {
874 obj->flags |= REMOTE;
1a703cba 875 return 0;
aa1dbc98 876 }
58e60dd2 877
aa1dbc98 878 obj->flags |= PUSHING;
58e60dd2 879 request = xmalloc(sizeof(*request));
aa1dbc98 880 request->obj = obj;
58e60dd2 881 request->url = NULL;
26349b2e 882 request->lock = lock;
58e60dd2 883 request->headers = NULL;
197e8951
NH
884 request->local_fileno = -1;
885 request->local_stream = NULL;
aa1dbc98 886 request->state = NEED_PUSH;
c17fb6ee
NH
887 request->next = request_queue_head;
888 request_queue_head = request;
29508e1e 889
b3ca4e4e 890#ifdef USE_CURL_MULTI
29508e1e
NH
891 fill_active_slots();
892 step_active_slots();
b3ca4e4e 893#endif
1a703cba
NH
894
895 return 1;
58e60dd2
NH
896}
897
898static int fetch_index(unsigned char *sha1)
899{
900 char *hex = sha1_to_hex(sha1);
901 char *filename;
902 char *url;
903 char tmpfile[PATH_MAX];
904 long prev_posn = 0;
905 char range[RANGE_HEADER_SIZE];
906 struct curl_slist *range_header = NULL;
907
908 FILE *indexfile;
909 struct active_request_slot *slot;
baa7b67d 910 struct slot_results results;
58e60dd2 911
c17fb6ee 912 /* Don't use the index if the pack isn't there */
1a703cba
NH
913 url = xmalloc(strlen(remote->url) + 64);
914 sprintf(url, "%sobjects/pack/pack-%s.pack", remote->url, hex);
c17fb6ee 915 slot = get_active_slot();
baa7b67d 916 slot->results = &results;
c17fb6ee
NH
917 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
918 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
919 if (start_active_slot(slot)) {
920 run_active_slot(slot);
baa7b67d 921 if (results.curl_result != CURLE_OK) {
c17fb6ee
NH
922 free(url);
923 return error("Unable to verify pack %s is available",
924 hex);
925 }
926 } else {
3b683b91 927 free(url);
c17fb6ee
NH
928 return error("Unable to start request");
929 }
930
3b683b91
MH
931 if (has_pack_index(sha1)) {
932 free(url);
58e60dd2 933 return 0;
3b683b91 934 }
58e60dd2
NH
935
936 if (push_verbosely)
937 fprintf(stderr, "Getting index for pack %s\n", hex);
1a703cba
NH
938
939 sprintf(url, "%sobjects/pack/pack-%s.idx", remote->url, hex);
940
58e60dd2
NH
941 filename = sha1_pack_index_name(sha1);
942 snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
943 indexfile = fopen(tmpfile, "a");
3b683b91
MH
944 if (!indexfile) {
945 free(url);
58e60dd2 946 return error("Unable to open local file %s for pack index",
84ef0338 947 tmpfile);
3b683b91 948 }
58e60dd2
NH
949
950 slot = get_active_slot();
baa7b67d 951 slot->results = &results;
c17fb6ee
NH
952 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
953 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
58e60dd2
NH
954 curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
955 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
956 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
957 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
958 slot->local = indexfile;
959
960 /* If there is data present from a previous transfer attempt,
961 resume where it left off */
962 prev_posn = ftell(indexfile);
963 if (prev_posn>0) {
964 if (push_verbosely)
965 fprintf(stderr,
966 "Resuming fetch of index for pack %s at byte %ld\n",
967 hex, prev_posn);
968 sprintf(range, "Range: bytes=%ld-", prev_posn);
969 range_header = curl_slist_append(range_header, range);
970 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
971 }
972
973 if (start_active_slot(slot)) {
974 run_active_slot(slot);
baa7b67d 975 if (results.curl_result != CURLE_OK) {
58e60dd2
NH
976 free(url);
977 fclose(indexfile);
978 return error("Unable to get pack index %s\n%s", url,
979 curl_errorstr);
980 }
981 } else {
982 free(url);
7b899967 983 fclose(indexfile);
58e60dd2
NH
984 return error("Unable to start request");
985 }
986
987 free(url);
988 fclose(indexfile);
989
990 return move_temp_to_file(tmpfile, filename);
991}
992
993static int setup_index(unsigned char *sha1)
994{
995 struct packed_git *new_pack;
58e60dd2
NH
996
997 if (fetch_index(sha1))
998 return -1;
999
1000 new_pack = parse_pack_index(sha1);
1001 new_pack->next = remote->packs;
1002 remote->packs = new_pack;
1003 return 0;
1004}
1005
f4f440a0 1006static int fetch_indices(void)
58e60dd2
NH
1007{
1008 unsigned char sha1[20];
1009 char *url;
028c2976 1010 struct strbuf buffer = STRBUF_INIT;
58e60dd2
NH
1011 char *data;
1012 int i = 0;
1013
1014 struct active_request_slot *slot;
baa7b67d 1015 struct slot_results results;
58e60dd2 1016
58e60dd2
NH
1017 if (push_verbosely)
1018 fprintf(stderr, "Getting pack list\n");
1a703cba
NH
1019
1020 url = xmalloc(strlen(remote->url) + 20);
1021 sprintf(url, "%sobjects/info/packs", remote->url);
58e60dd2
NH
1022
1023 slot = get_active_slot();
baa7b67d 1024 slot->results = &results;
58e60dd2 1025 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
29508e1e 1026 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH
1027 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1028 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1029 if (start_active_slot(slot)) {
1030 run_active_slot(slot);
baa7b67d 1031 if (results.curl_result != CURLE_OK) {
028c2976 1032 strbuf_release(&buffer);
58e60dd2 1033 free(url);
baa7b67d 1034 if (results.http_code == 404)
58e60dd2
NH
1035 return 0;
1036 else
1037 return error("%s", curl_errorstr);
1038 }
1039 } else {
028c2976 1040 strbuf_release(&buffer);
58e60dd2
NH
1041 free(url);
1042 return error("Unable to start request");
1043 }
1044 free(url);
1045
028c2976
MH
1046 data = buffer.buf;
1047 while (i < buffer.len) {
58e60dd2
NH
1048 switch (data[i]) {
1049 case 'P':
1050 i++;
028c2976 1051 if (i + 52 < buffer.len &&
cc44c765 1052 !prefixcmp(data + i, " pack-") &&
1968d77d 1053 !prefixcmp(data + i + 46, ".pack\n")) {
58e60dd2
NH
1054 get_sha1_hex(data + i + 6, sha1);
1055 setup_index(sha1);
1056 i += 51;
1057 break;
1058 }
1059 default:
1060 while (data[i] != '\n')
1061 i++;
1062 }
1063 i++;
1064 }
1065
028c2976 1066 strbuf_release(&buffer);
58e60dd2
NH
1067 return 0;
1068}
1069
aa1dbc98
NH
1070static void one_remote_object(const char *hex)
1071{
1072 unsigned char sha1[20];
1073 struct object *obj;
1074
1075 if (get_sha1_hex(hex, sha1) != 0)
1076 return;
1077
1078 obj = lookup_object(sha1);
1079 if (!obj)
1080 obj = parse_object(sha1);
1081
1082 /* Ignore remote objects that don't exist locally */
1083 if (!obj)
1084 return;
1085
1086 obj->flags |= REMOTE;
1087 if (!object_list_contains(objects, obj))
1f1e895f 1088 object_list_insert(obj, &objects);
aa1dbc98
NH
1089}
1090
acf59575 1091static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
26349b2e 1092{
acf59575
NH
1093 int *lock_flags = (int *)ctx->userData;
1094
1095 if (tag_closed) {
1096 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
1097 if ((*lock_flags & DAV_PROP_LOCKEX) &&
1098 (*lock_flags & DAV_PROP_LOCKWR)) {
1099 *lock_flags |= DAV_LOCK_OK;
1100 }
1101 *lock_flags &= DAV_LOCK_OK;
1102 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
1103 *lock_flags |= DAV_PROP_LOCKWR;
1104 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
1105 *lock_flags |= DAV_PROP_LOCKEX;
1106 }
1107 }
26349b2e
NH
1108}
1109
acf59575 1110static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
26349b2e 1111{
aa1dbc98 1112 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
acf59575
NH
1113
1114 if (tag_closed && ctx->cdata) {
1115 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
1116 lock->owner = xmalloc(strlen(ctx->cdata) + 1);
1117 strcpy(lock->owner, ctx->cdata);
1118 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
cc44c765 1119 if (!prefixcmp(ctx->cdata, "Second-"))
acf59575
NH
1120 lock->timeout =
1121 strtol(ctx->cdata + 7, NULL, 10);
1122 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
cc44c765 1123 if (!prefixcmp(ctx->cdata, "opaquelocktoken:")) {
3e2f62be 1124 lock->token = xmalloc(strlen(ctx->cdata) - 15);
acf59575
NH
1125 strcpy(lock->token, ctx->cdata + 16);
1126 }
1127 }
26349b2e
NH
1128 }
1129}
1130
aa1dbc98 1131static void one_remote_ref(char *refname);
aa1dbc98 1132
26349b2e 1133static void
acf59575 1134xml_start_tag(void *userData, const char *name, const char **atts)
26349b2e 1135{
acf59575 1136 struct xml_ctx *ctx = (struct xml_ctx *)userData;
ef9e58c8 1137 const char *c = strchr(name, ':');
acf59575
NH
1138 int new_len;
1139
1140 if (c == NULL)
1141 c = name;
1142 else
1143 c++;
1144
1145 new_len = strlen(ctx->name) + strlen(c) + 2;
1146
1147 if (new_len > ctx->len) {
1148 ctx->name = xrealloc(ctx->name, new_len);
1149 ctx->len = new_len;
26349b2e 1150 }
acf59575
NH
1151 strcat(ctx->name, ".");
1152 strcat(ctx->name, c);
26349b2e 1153
4cac42b1
JH
1154 free(ctx->cdata);
1155 ctx->cdata = NULL;
acf59575
NH
1156
1157 ctx->userFunc(ctx, 0);
26349b2e
NH
1158}
1159
58e60dd2 1160static void
acf59575 1161xml_end_tag(void *userData, const char *name)
58e60dd2 1162{
acf59575 1163 struct xml_ctx *ctx = (struct xml_ctx *)userData;
ef9e58c8 1164 const char *c = strchr(name, ':');
acf59575 1165 char *ep;
58e60dd2 1166
acf59575
NH
1167 ctx->userFunc(ctx, 1);
1168
1169 if (c == NULL)
1170 c = name;
1171 else
1172 c++;
1173
1174 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
1175 *ep = 0;
58e60dd2
NH
1176}
1177
1178static void
acf59575 1179xml_cdata(void *userData, const XML_Char *s, int len)
58e60dd2 1180{
acf59575 1181 struct xml_ctx *ctx = (struct xml_ctx *)userData;
4cac42b1 1182 free(ctx->cdata);
182af834 1183 ctx->cdata = xmemdupz(s, len);
58e60dd2
NH
1184}
1185
554fe20d 1186static struct remote_lock *lock_remote(const char *path, long timeout)
58e60dd2
NH
1187{
1188 struct active_request_slot *slot;
baa7b67d 1189 struct slot_results results;
028c2976
MH
1190 struct buffer out_buffer = { STRBUF_INIT, 0 };
1191 struct strbuf in_buffer = STRBUF_INIT;
58e60dd2 1192 char *url;
0772b9a6 1193 char *ep;
58e60dd2 1194 char timeout_header[25];
512d632c 1195 struct remote_lock *lock = NULL;
58e60dd2 1196 struct curl_slist *dav_headers = NULL;
acf59575 1197 struct xml_ctx ctx;
58e60dd2 1198
aa1dbc98
NH
1199 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1200 sprintf(url, "%s%s", remote->url, path);
1201
0772b9a6 1202 /* Make sure leading directories exist for the remote ref */
2c46759d 1203 ep = strchr(url + strlen(remote->url) + 1, '/');
0772b9a6
NH
1204 while (ep) {
1205 *ep = 0;
1206 slot = get_active_slot();
baa7b67d 1207 slot->results = &results;
0772b9a6
NH
1208 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1209 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1210 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
1211 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1212 if (start_active_slot(slot)) {
1213 run_active_slot(slot);
baa7b67d
NH
1214 if (results.curl_result != CURLE_OK &&
1215 results.http_code != 405) {
0772b9a6
NH
1216 fprintf(stderr,
1217 "Unable to create branch path %s\n",
1218 url);
1219 free(url);
1220 return NULL;
1221 }
1222 } else {
1a703cba 1223 fprintf(stderr, "Unable to start MKCOL request\n");
0772b9a6
NH
1224 free(url);
1225 return NULL;
1226 }
1227 *ep = '/';
1228 ep = strchr(ep + 1, '/');
1229 }
1230
028c2976 1231 strbuf_addf(&out_buffer.buf, LOCK_REQUEST, git_default_email);
26349b2e 1232
75187c9d 1233 sprintf(timeout_header, "Timeout: Second-%ld", timeout);
58e60dd2
NH
1234 dav_headers = curl_slist_append(dav_headers, timeout_header);
1235 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1236
1237 slot = get_active_slot();
baa7b67d 1238 slot->results = &results;
58e60dd2 1239 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
028c2976 1240 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
58e60dd2 1241 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
26349b2e 1242 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
29508e1e 1243 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH
1244 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1245 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1246 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
1247 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1248
aa1dbc98 1249 lock = xcalloc(1, sizeof(*lock));
aa1dbc98 1250 lock->timeout = -1;
acf59575 1251
58e60dd2
NH
1252 if (start_active_slot(slot)) {
1253 run_active_slot(slot);
baa7b67d 1254 if (results.curl_result == CURLE_OK) {
472b2570
MH
1255 XML_Parser parser = XML_ParserCreate(NULL);
1256 enum XML_Status result;
acf59575
NH
1257 ctx.name = xcalloc(10, 1);
1258 ctx.len = 0;
1259 ctx.cdata = NULL;
1260 ctx.userFunc = handle_new_lock_ctx;
aa1dbc98 1261 ctx.userData = lock;
acf59575
NH
1262 XML_SetUserData(parser, &ctx);
1263 XML_SetElementHandler(parser, xml_start_tag,
1264 xml_end_tag);
1265 XML_SetCharacterDataHandler(parser, xml_cdata);
028c2976
MH
1266 result = XML_Parse(parser, in_buffer.buf,
1267 in_buffer.len, 1);
acf59575
NH
1268 free(ctx.name);
1269 if (result != XML_STATUS_OK) {
1270 fprintf(stderr, "XML error: %s\n",
1271 XML_ErrorString(
1272 XML_GetErrorCode(parser)));
aa1dbc98 1273 lock->timeout = -1;
acf59575 1274 }
472b2570 1275 XML_ParserFree(parser);
58e60dd2
NH
1276 }
1277 } else {
1a703cba 1278 fprintf(stderr, "Unable to start LOCK request\n");
58e60dd2
NH
1279 }
1280
acf59575 1281 curl_slist_free_all(dav_headers);
028c2976
MH
1282 strbuf_release(&out_buffer.buf);
1283 strbuf_release(&in_buffer);
26349b2e 1284
aa1dbc98
NH
1285 if (lock->token == NULL || lock->timeout <= 0) {
1286 if (lock->token != NULL)
1287 free(lock->token);
1288 if (lock->owner != NULL)
1289 free(lock->owner);
75187c9d 1290 free(url);
aa1dbc98
NH
1291 free(lock);
1292 lock = NULL;
acf59575 1293 } else {
aa1dbc98 1294 lock->url = url;
aa1dbc98 1295 lock->start_time = time(NULL);
512d632c
NH
1296 lock->next = remote->locks;
1297 remote->locks = lock;
26349b2e
NH
1298 }
1299
aa1dbc98 1300 return lock;
58e60dd2
NH
1301}
1302
aa1dbc98 1303static int unlock_remote(struct remote_lock *lock)
58e60dd2
NH
1304{
1305 struct active_request_slot *slot;
baa7b67d 1306 struct slot_results results;
512d632c 1307 struct remote_lock *prev = remote->locks;
58e60dd2
NH
1308 char *lock_token_header;
1309 struct curl_slist *dav_headers = NULL;
1310 int rc = 0;
1311
26349b2e 1312 lock_token_header = xmalloc(strlen(lock->token) + 31);
58e60dd2 1313 sprintf(lock_token_header, "Lock-Token: <opaquelocktoken:%s>",
26349b2e 1314 lock->token);
58e60dd2
NH
1315 dav_headers = curl_slist_append(dav_headers, lock_token_header);
1316
1317 slot = get_active_slot();
baa7b67d 1318 slot->results = &results;
58e60dd2 1319 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
75187c9d 1320 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
58e60dd2
NH
1321 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
1322 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1323
1324 if (start_active_slot(slot)) {
1325 run_active_slot(slot);
baa7b67d 1326 if (results.curl_result == CURLE_OK)
58e60dd2
NH
1327 rc = 1;
1328 else
512d632c 1329 fprintf(stderr, "UNLOCK HTTP error %ld\n",
baa7b67d 1330 results.http_code);
58e60dd2 1331 } else {
512d632c 1332 fprintf(stderr, "Unable to start UNLOCK request\n");
58e60dd2
NH
1333 }
1334
1335 curl_slist_free_all(dav_headers);
1336 free(lock_token_header);
75187c9d 1337
512d632c
NH
1338 if (remote->locks == lock) {
1339 remote->locks = lock->next;
1340 } else {
1341 while (prev && prev->next != lock)
1342 prev = prev->next;
1343 if (prev)
1344 prev->next = prev->next->next;
1345 }
1346
1347 if (lock->owner != NULL)
1348 free(lock->owner);
1349 free(lock->url);
1350 free(lock->token);
1351 free(lock);
58e60dd2
NH
1352
1353 return rc;
1354}
1355
3030baa7
NH
1356static void remote_ls(const char *path, int flags,
1357 void (*userFunc)(struct remote_ls_ctx *ls),
1358 void *userData);
aa1dbc98 1359
3030baa7
NH
1360static void process_ls_object(struct remote_ls_ctx *ls)
1361{
1362 unsigned int *parent = (unsigned int *)ls->userData;
1363 char *path = ls->dentry_name;
1364 char *obj_hex;
aa1dbc98 1365
3030baa7
NH
1366 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1367 remote_dir_exists[*parent] = 1;
1368 return;
1369 }
aa1dbc98 1370
3030baa7
NH
1371 if (strlen(path) != 49)
1372 return;
1373 path += 8;
1374 obj_hex = xmalloc(strlen(path));
eecc8367
ER
1375 /* NB: path is not null-terminated, can not use strlcpy here */
1376 memcpy(obj_hex, path, 2);
3030baa7
NH
1377 strcpy(obj_hex + 2, path + 3);
1378 one_remote_object(obj_hex);
1379 free(obj_hex);
1380}
aa1dbc98 1381
3030baa7
NH
1382static void process_ls_ref(struct remote_ls_ctx *ls)
1383{
1384 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1385 fprintf(stderr, " %s\n", ls->dentry_name);
1386 return;
1387 }
aa1dbc98 1388
3030baa7
NH
1389 if (!(ls->dentry_flags & IS_DIR))
1390 one_remote_ref(ls->dentry_name);
1391}
aa1dbc98 1392
3030baa7
NH
1393static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1394{
1395 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
aa1dbc98 1396
3030baa7
NH
1397 if (tag_closed) {
1398 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1399 if (ls->dentry_flags & IS_DIR) {
1400 if (ls->flags & PROCESS_DIRS) {
1401 ls->userFunc(ls);
1402 }
1403 if (strcmp(ls->dentry_name, ls->path) &&
1404 ls->flags & RECURSIVE) {
1405 remote_ls(ls->dentry_name,
1406 ls->flags,
1407 ls->userFunc,
1408 ls->userData);
1409 }
1410 } else if (ls->flags & PROCESS_FILES) {
1411 ls->userFunc(ls);
aa1dbc98 1412 }
3030baa7
NH
1413 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1414 ls->dentry_name = xmalloc(strlen(ctx->cdata) -
1415 remote->path_len + 1);
1416 strcpy(ls->dentry_name, ctx->cdata + remote->path_len);
1417 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1418 ls->dentry_flags |= IS_DIR;
aa1dbc98 1419 }
3030baa7 1420 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
4cac42b1 1421 free(ls->dentry_name);
3030baa7
NH
1422 ls->dentry_name = NULL;
1423 ls->dentry_flags = 0;
aa1dbc98 1424 }
aa1dbc98
NH
1425}
1426
3030baa7
NH
1427static void remote_ls(const char *path, int flags,
1428 void (*userFunc)(struct remote_ls_ctx *ls),
1429 void *userData)
aa1dbc98 1430{
3030baa7 1431 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
aa1dbc98 1432 struct active_request_slot *slot;
baa7b67d 1433 struct slot_results results;
028c2976
MH
1434 struct strbuf in_buffer = STRBUF_INIT;
1435 struct buffer out_buffer = { STRBUF_INIT, 0 };
aa1dbc98
NH
1436 struct curl_slist *dav_headers = NULL;
1437 struct xml_ctx ctx;
3030baa7
NH
1438 struct remote_ls_ctx ls;
1439
1440 ls.flags = flags;
9befac47 1441 ls.path = xstrdup(path);
3030baa7
NH
1442 ls.dentry_name = NULL;
1443 ls.dentry_flags = 0;
1444 ls.userData = userData;
1445 ls.userFunc = userFunc;
aa1dbc98 1446
aa1dbc98
NH
1447 sprintf(url, "%s%s", remote->url, path);
1448
028c2976 1449 strbuf_addf(&out_buffer.buf, PROPFIND_ALL_REQUEST);
aa1dbc98
NH
1450
1451 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1452 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1453
1454 slot = get_active_slot();
baa7b67d 1455 slot->results = &results;
aa1dbc98 1456 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
028c2976 1457 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
aa1dbc98
NH
1458 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1459 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1460 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1461 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1462 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1463 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1464 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1465
1466 if (start_active_slot(slot)) {
1467 run_active_slot(slot);
baa7b67d 1468 if (results.curl_result == CURLE_OK) {
472b2570
MH
1469 XML_Parser parser = XML_ParserCreate(NULL);
1470 enum XML_Status result;
aa1dbc98
NH
1471 ctx.name = xcalloc(10, 1);
1472 ctx.len = 0;
1473 ctx.cdata = NULL;
3030baa7
NH
1474 ctx.userFunc = handle_remote_ls_ctx;
1475 ctx.userData = &ls;
aa1dbc98
NH
1476 XML_SetUserData(parser, &ctx);
1477 XML_SetElementHandler(parser, xml_start_tag,
1478 xml_end_tag);
1479 XML_SetCharacterDataHandler(parser, xml_cdata);
028c2976
MH
1480 result = XML_Parse(parser, in_buffer.buf,
1481 in_buffer.len, 1);
aa1dbc98
NH
1482 free(ctx.name);
1483
1484 if (result != XML_STATUS_OK) {
1485 fprintf(stderr, "XML error: %s\n",
1486 XML_ErrorString(
1487 XML_GetErrorCode(parser)));
1488 }
472b2570 1489 XML_ParserFree(parser);
aa1dbc98
NH
1490 }
1491 } else {
3030baa7 1492 fprintf(stderr, "Unable to start PROPFIND request\n");
aa1dbc98
NH
1493 }
1494
3030baa7 1495 free(ls.path);
aa1dbc98 1496 free(url);
028c2976
MH
1497 strbuf_release(&out_buffer.buf);
1498 strbuf_release(&in_buffer);
aa1dbc98
NH
1499 curl_slist_free_all(dav_headers);
1500}
1501
3030baa7
NH
1502static void get_remote_object_list(unsigned char parent)
1503{
1504 char path[] = "objects/XX/";
1505 static const char hex[] = "0123456789abcdef";
1506 unsigned int val = parent;
1507
1508 path[8] = hex[val >> 4];
1509 path[9] = hex[val & 0xf];
1510 remote_dir_exists[val] = 0;
1511 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1512 process_ls_object, &val);
1513}
1514
acf59575 1515static int locking_available(void)
58e60dd2
NH
1516{
1517 struct active_request_slot *slot;
baa7b67d 1518 struct slot_results results;
028c2976
MH
1519 struct strbuf in_buffer = STRBUF_INIT;
1520 struct buffer out_buffer = { STRBUF_INIT, 0 };
58e60dd2 1521 struct curl_slist *dav_headers = NULL;
acf59575
NH
1522 struct xml_ctx ctx;
1523 int lock_flags = 0;
58e60dd2 1524
028c2976 1525 strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, remote->url);
58e60dd2
NH
1526
1527 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1528 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
baa7b67d 1529
58e60dd2 1530 slot = get_active_slot();
baa7b67d 1531 slot->results = &results;
58e60dd2 1532 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
028c2976 1533 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
58e60dd2
NH
1534 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1535 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
29508e1e 1536 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH
1537 curl_easy_setopt(slot->curl, CURLOPT_URL, remote->url);
1538 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1539 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1540 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1541
1542 if (start_active_slot(slot)) {
1543 run_active_slot(slot);
baa7b67d 1544 if (results.curl_result == CURLE_OK) {
472b2570
MH
1545 XML_Parser parser = XML_ParserCreate(NULL);
1546 enum XML_Status result;
acf59575
NH
1547 ctx.name = xcalloc(10, 1);
1548 ctx.len = 0;
1549 ctx.cdata = NULL;
1550 ctx.userFunc = handle_lockprop_ctx;
1551 ctx.userData = &lock_flags;
1552 XML_SetUserData(parser, &ctx);
1553 XML_SetElementHandler(parser, xml_start_tag,
1554 xml_end_tag);
028c2976
MH
1555 result = XML_Parse(parser, in_buffer.buf,
1556 in_buffer.len, 1);
acf59575
NH
1557 free(ctx.name);
1558
1559 if (result != XML_STATUS_OK) {
1560 fprintf(stderr, "XML error: %s\n",
1561 XML_ErrorString(
1562 XML_GetErrorCode(parser)));
1563 lock_flags = 0;
1564 }
472b2570 1565 XML_ParserFree(parser);
325ce395
JH
1566 if (!lock_flags)
1567 error("Error: no DAV locking support on %s",
1568 remote->url);
1569
1570 } else {
1571 error("Cannot access URL %s, return code %d",
1572 remote->url, results.curl_result);
1573 lock_flags = 0;
58e60dd2 1574 }
58e60dd2 1575 } else {
325ce395 1576 error("Unable to start PROPFIND request on %s", remote->url);
58e60dd2
NH
1577 }
1578
028c2976
MH
1579 strbuf_release(&out_buffer.buf);
1580 strbuf_release(&in_buffer);
acf59575
NH
1581 curl_slist_free_all(dav_headers);
1582
1583 return lock_flags;
58e60dd2
NH
1584}
1585
b5bf7cd6 1586static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1f1e895f
LT
1587{
1588 struct object_list *entry = xmalloc(sizeof(struct object_list));
1589 entry->item = obj;
1590 entry->next = *p;
1591 *p = entry;
1592 return &entry->next;
1593}
1594
aa1dbc98
NH
1595static struct object_list **process_blob(struct blob *blob,
1596 struct object_list **p,
1597 struct name_path *path,
1598 const char *name)
58e60dd2 1599{
aa1dbc98 1600 struct object *obj = &blob->object;
58e60dd2 1601
aa1dbc98
NH
1602 obj->flags |= LOCAL;
1603
1604 if (obj->flags & (UNINTERESTING | SEEN))
1605 return p;
1606
1607 obj->flags |= SEEN;
1f1e895f 1608 return add_one_object(obj, p);
aa1dbc98
NH
1609}
1610
1611static struct object_list **process_tree(struct tree *tree,
1612 struct object_list **p,
1613 struct name_path *path,
1614 const char *name)
1615{
1616 struct object *obj = &tree->object;
2d9c58c6 1617 struct tree_desc desc;
4c068a98 1618 struct name_entry entry;
aa1dbc98
NH
1619 struct name_path me;
1620
1621 obj->flags |= LOCAL;
1622
1623 if (obj->flags & (UNINTERESTING | SEEN))
1624 return p;
1625 if (parse_tree(tree) < 0)
1626 die("bad tree object %s", sha1_to_hex(obj->sha1));
1627
1628 obj->flags |= SEEN;
9befac47 1629 name = xstrdup(name);
1f1e895f 1630 p = add_one_object(obj, p);
aa1dbc98
NH
1631 me.up = path;
1632 me.elem = name;
1633 me.elem_len = strlen(name);
2d9c58c6 1634
6fda5e51 1635 init_tree_desc(&desc, tree->buffer, tree->size);
2d9c58c6 1636
4c068a98
LT
1637 while (tree_entry(&desc, &entry)) {
1638 if (S_ISDIR(entry.mode))
1639 p = process_tree(lookup_tree(entry.sha1), p, &me, name);
aa1dbc98 1640 else
4c068a98 1641 p = process_blob(lookup_blob(entry.sha1), p, &me, name);
58e60dd2 1642 }
2d9c58c6
LT
1643 free(tree->buffer);
1644 tree->buffer = NULL;
aa1dbc98 1645 return p;
58e60dd2
NH
1646}
1647
1a703cba 1648static int get_delta(struct rev_info *revs, struct remote_lock *lock)
58e60dd2 1649{
1f1e895f 1650 int i;
58e60dd2 1651 struct commit *commit;
1f1e895f 1652 struct object_list **p = &objects;
1a703cba 1653 int count = 0;
58e60dd2 1654
aa1dbc98
NH
1655 while ((commit = get_revision(revs)) != NULL) {
1656 p = process_tree(commit->tree, p, NULL, "");
1657 commit->object.flags |= LOCAL;
1658 if (!(commit->object.flags & UNINTERESTING))
1a703cba 1659 count += add_send_request(&commit->object, lock);
aa1dbc98 1660 }
58e60dd2 1661
1f1e895f
LT
1662 for (i = 0; i < revs->pending.nr; i++) {
1663 struct object_array_entry *entry = revs->pending.objects + i;
1664 struct object *obj = entry->item;
1665 const char *name = entry->name;
58e60dd2 1666
aa1dbc98
NH
1667 if (obj->flags & (UNINTERESTING | SEEN))
1668 continue;
1974632c 1669 if (obj->type == OBJ_TAG) {
aa1dbc98 1670 obj->flags |= SEEN;
1f1e895f 1671 p = add_one_object(obj, p);
aa1dbc98 1672 continue;
58e60dd2 1673 }
1974632c 1674 if (obj->type == OBJ_TREE) {
aa1dbc98
NH
1675 p = process_tree((struct tree *)obj, p, NULL, name);
1676 continue;
58e60dd2 1677 }
1974632c 1678 if (obj->type == OBJ_BLOB) {
aa1dbc98
NH
1679 p = process_blob((struct blob *)obj, p, NULL, name);
1680 continue;
58e60dd2 1681 }
aa1dbc98
NH
1682 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1683 }
1684
1685 while (objects) {
1686 if (!(objects->item->flags & UNINTERESTING))
1a703cba 1687 count += add_send_request(objects->item, lock);
aa1dbc98 1688 objects = objects->next;
58e60dd2 1689 }
1a703cba
NH
1690
1691 return count;
58e60dd2
NH
1692}
1693
aa1dbc98 1694static int update_remote(unsigned char *sha1, struct remote_lock *lock)
58e60dd2
NH
1695{
1696 struct active_request_slot *slot;
baa7b67d 1697 struct slot_results results;
58e60dd2 1698 char *if_header;
028c2976 1699 struct buffer out_buffer = { STRBUF_INIT, 0 };
58e60dd2 1700 struct curl_slist *dav_headers = NULL;
58e60dd2 1701
26349b2e
NH
1702 if_header = xmalloc(strlen(lock->token) + 25);
1703 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
58e60dd2
NH
1704 dav_headers = curl_slist_append(dav_headers, if_header);
1705
028c2976 1706 strbuf_addf(&out_buffer.buf, "%s\n", sha1_to_hex(sha1));
58e60dd2
NH
1707
1708 slot = get_active_slot();
baa7b67d 1709 slot->results = &results;
58e60dd2 1710 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
028c2976 1711 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.buf.len);
58e60dd2
NH
1712 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1713 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1714 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1715 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1716 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1717 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
75187c9d 1718 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
58e60dd2
NH
1719
1720 if (start_active_slot(slot)) {
1721 run_active_slot(slot);
028c2976 1722 strbuf_release(&out_buffer.buf);
58e60dd2 1723 free(if_header);
baa7b67d 1724 if (results.curl_result != CURLE_OK) {
58e60dd2
NH
1725 fprintf(stderr,
1726 "PUT error: curl result=%d, HTTP code=%ld\n",
baa7b67d 1727 results.curl_result, results.http_code);
58e60dd2
NH
1728 /* We should attempt recovery? */
1729 return 0;
1730 }
1731 } else {
028c2976 1732 strbuf_release(&out_buffer.buf);
58e60dd2 1733 free(if_header);
58e60dd2
NH
1734 fprintf(stderr, "Unable to start PUT request\n");
1735 return 0;
1736 }
1737
1738 return 1;
1739}
1740
aa1dbc98
NH
1741static struct ref *local_refs, **local_tail;
1742static struct ref *remote_refs, **remote_tail;
1743
8da19775 1744static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
aa1dbc98
NH
1745{
1746 struct ref *ref;
1747 int len = strlen(refname) + 1;
1748 ref = xcalloc(1, sizeof(*ref) + len);
e702496e 1749 hashcpy(ref->new_sha1, sha1);
aa1dbc98
NH
1750 memcpy(ref->name, refname, len);
1751 *local_tail = ref;
1752 local_tail = &ref->next;
1753 return 0;
1754}
1755
1756static void one_remote_ref(char *refname)
1757{
1758 struct ref *ref;
1759 unsigned char remote_sha1[20];
197e8951 1760 struct object *obj;
8c9e7947 1761 int len = strlen(refname) + 1;
aa1dbc98 1762
d7e92806
MH
1763 if (http_fetch_ref(remote->url, refname + 5 /* "refs/" */,
1764 remote_sha1) != 0) {
aa1dbc98
NH
1765 fprintf(stderr,
1766 "Unable to fetch ref %s from %s\n",
1767 refname, remote->url);
1768 return;
1769 }
1770
197e8951
NH
1771 /*
1772 * Fetch a copy of the object if it doesn't exist locally - it
1773 * may be required for updating server info later.
1774 */
1775 if (remote->can_update_info_refs && !has_sha1_file(remote_sha1)) {
1776 obj = lookup_unknown_object(remote_sha1);
1777 if (obj) {
1778 fprintf(stderr, " fetch %s for %s\n",
1779 sha1_to_hex(remote_sha1), refname);
1780 add_fetch_request(obj);
1781 }
1782 }
1783
aa1dbc98 1784 ref = xcalloc(1, sizeof(*ref) + len);
e702496e 1785 hashcpy(ref->old_sha1, remote_sha1);
aa1dbc98
NH
1786 memcpy(ref->name, refname, len);
1787 *remote_tail = ref;
1788 remote_tail = &ref->next;
1789}
1790
1791static void get_local_heads(void)
1792{
1793 local_tail = &local_refs;
cb5d709f 1794 for_each_ref(one_local_ref, NULL);
aa1dbc98
NH
1795}
1796
1797static void get_dav_remote_heads(void)
1798{
1799 remote_tail = &remote_refs;
3030baa7 1800 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
aa1dbc98
NH
1801}
1802
1803static int is_zero_sha1(const unsigned char *sha1)
1804{
1805 int i;
1806
1807 for (i = 0; i < 20; i++) {
1808 if (*sha1++)
1809 return 0;
1810 }
1811 return 1;
1812}
1813
1814static void unmark_and_free(struct commit_list *list, unsigned int mark)
1815{
1816 while (list) {
1817 struct commit_list *temp = list;
1818 temp->item->object.flags &= ~mark;
1819 list = temp->next;
1820 free(temp);
1821 }
1822}
1823
1824static int ref_newer(const unsigned char *new_sha1,
1825 const unsigned char *old_sha1)
1826{
1827 struct object *o;
1828 struct commit *old, *new;
1829 struct commit_list *list, *used;
1830 int found = 0;
1831
1832 /* Both new and old must be commit-ish and new is descendant of
1833 * old. Otherwise we require --force.
1834 */
1835 o = deref_tag(parse_object(old_sha1), NULL, 0);
1974632c 1836 if (!o || o->type != OBJ_COMMIT)
aa1dbc98
NH
1837 return 0;
1838 old = (struct commit *) o;
1839
1840 o = deref_tag(parse_object(new_sha1), NULL, 0);
1974632c 1841 if (!o || o->type != OBJ_COMMIT)
aa1dbc98
NH
1842 return 0;
1843 new = (struct commit *) o;
1844
1845 if (parse_commit(new) < 0)
1846 return 0;
1847
1848 used = list = NULL;
1849 commit_list_insert(new, &list);
1850 while (list) {
1851 new = pop_most_recent_commit(&list, TMP_MARK);
1852 commit_list_insert(new, &used);
1853 if (new == old) {
1854 found = 1;
1855 break;
1856 }
1857 }
1858 unmark_and_free(list, TMP_MARK);
1859 unmark_and_free(used, TMP_MARK);
1860 return found;
1861}
1862
1863static void mark_edge_parents_uninteresting(struct commit *commit)
1864{
1865 struct commit_list *parents;
1866
1867 for (parents = commit->parents; parents; parents = parents->next) {
1868 struct commit *parent = parents->item;
1869 if (!(parent->object.flags & UNINTERESTING))
1870 continue;
1871 mark_tree_uninteresting(parent->tree);
1872 }
1873}
1874
1875static void mark_edges_uninteresting(struct commit_list *list)
1876{
1877 for ( ; list; list = list->next) {
1878 struct commit *commit = list->item;
1879
1880 if (commit->object.flags & UNINTERESTING) {
1881 mark_tree_uninteresting(commit->tree);
1882 continue;
1883 }
1884 mark_edge_parents_uninteresting(commit);
1885 }
1886}
1887
197e8951
NH
1888static void add_remote_info_ref(struct remote_ls_ctx *ls)
1889{
028c2976 1890 struct strbuf *buf = (struct strbuf *)ls->userData;
197e8951
NH
1891 unsigned char remote_sha1[20];
1892 struct object *o;
1893 int len;
1894 char *ref_info;
1895
d7e92806
MH
1896 if (http_fetch_ref(remote->url, ls->dentry_name + 5 /* "refs/" */,
1897 remote_sha1) != 0) {
197e8951
NH
1898 fprintf(stderr,
1899 "Unable to fetch ref %s from %s\n",
1900 ls->dentry_name, remote->url);
1901 aborted = 1;
1902 return;
1903 }
1904
1905 o = parse_object(remote_sha1);
1906 if (!o) {
1907 fprintf(stderr,
1908 "Unable to parse object %s for remote ref %s\n",
1909 sha1_to_hex(remote_sha1), ls->dentry_name);
1910 aborted = 1;
1911 return;
1912 }
1913
1914 len = strlen(ls->dentry_name) + 42;
1915 ref_info = xcalloc(len + 1, 1);
1916 sprintf(ref_info, "%s %s\n",
1917 sha1_to_hex(remote_sha1), ls->dentry_name);
1918 fwrite_buffer(ref_info, 1, len, buf);
1919 free(ref_info);
1920
1974632c 1921 if (o->type == OBJ_TAG) {
197e8951
NH
1922 o = deref_tag(o, ls->dentry_name, 0);
1923 if (o) {
1924 len = strlen(ls->dentry_name) + 45;
1925 ref_info = xcalloc(len + 1, 1);
1926 sprintf(ref_info, "%s %s^{}\n",
1927 sha1_to_hex(o->sha1), ls->dentry_name);
1928 fwrite_buffer(ref_info, 1, len, buf);
1929 free(ref_info);
1930 }
1931 }
1932}
1933
1934static void update_remote_info_refs(struct remote_lock *lock)
1935{
028c2976 1936 struct buffer buffer = { STRBUF_INIT, 0 };
197e8951
NH
1937 struct active_request_slot *slot;
1938 struct slot_results results;
1939 char *if_header;
1940 struct curl_slist *dav_headers = NULL;
1941
197e8951 1942 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
028c2976 1943 add_remote_info_ref, &buffer.buf);
197e8951
NH
1944 if (!aborted) {
1945 if_header = xmalloc(strlen(lock->token) + 25);
1946 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
1947 dav_headers = curl_slist_append(dav_headers, if_header);
1948
1949 slot = get_active_slot();
1950 slot->results = &results;
1951 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
028c2976 1952 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.buf.len);
197e8951
NH
1953 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1954 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1955 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1956 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1957 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1958 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1959 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1960
197e8951
NH
1961 if (start_active_slot(slot)) {
1962 run_active_slot(slot);
1963 if (results.curl_result != CURLE_OK) {
1964 fprintf(stderr,
1965 "PUT error: curl result=%d, HTTP code=%ld\n",
1966 results.curl_result, results.http_code);
1967 }
1968 }
1969 free(if_header);
1970 }
028c2976 1971 strbuf_release(&buffer.buf);
197e8951
NH
1972}
1973
1974static int remote_exists(const char *path)
1975{
1976 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1977 struct active_request_slot *slot;
1978 struct slot_results results;
3a462bc9 1979 int ret = -1;
197e8951
NH
1980
1981 sprintf(url, "%s%s", remote->url, path);
1982
028c2976 1983 slot = get_active_slot();
197e8951 1984 slot->results = &results;
028c2976
MH
1985 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1986 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
197e8951 1987
028c2976 1988 if (start_active_slot(slot)) {
197e8951
NH
1989 run_active_slot(slot);
1990 if (results.http_code == 404)
3a462bc9 1991 ret = 0;
197e8951 1992 else if (results.curl_result == CURLE_OK)
3a462bc9 1993 ret = 1;
197e8951
NH
1994 else
1995 fprintf(stderr, "HEAD HTTP error %ld\n", results.http_code);
1996 } else {
1997 fprintf(stderr, "Unable to start HEAD request\n");
1998 }
1999
3a462bc9
MH
2000 free(url);
2001 return ret;
197e8951
NH
2002}
2003
554fe20d 2004static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
3dfaf7bc
NH
2005{
2006 char *url;
028c2976 2007 struct strbuf buffer = STRBUF_INIT;
3dfaf7bc
NH
2008 struct active_request_slot *slot;
2009 struct slot_results results;
2010
2011 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
2012 sprintf(url, "%s%s", remote->url, path);
2013
3dfaf7bc
NH
2014 slot = get_active_slot();
2015 slot->results = &results;
2016 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
2017 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
2018 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
2019 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2020 if (start_active_slot(slot)) {
2021 run_active_slot(slot);
2022 if (results.curl_result != CURLE_OK) {
2023 die("Couldn't get %s for remote symref\n%s",
2024 url, curl_errorstr);
2025 }
2026 } else {
2027 die("Unable to start remote symref request");
2028 }
2029 free(url);
2030
2031 if (*symref != NULL)
2032 free(*symref);
2033 *symref = NULL;
a8e0d16d 2034 hashclr(sha1);
3dfaf7bc 2035
028c2976 2036 if (buffer.len == 0)
3dfaf7bc
NH
2037 return;
2038
2039 /* If it's a symref, set the refname; otherwise try for a sha1 */
028c2976
MH
2040 if (!prefixcmp((char *)buffer.buf, "ref: ")) {
2041 *symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6);
3dfaf7bc 2042 } else {
028c2976 2043 get_sha1_hex(buffer.buf, sha1);
3dfaf7bc
NH
2044 }
2045
028c2976 2046 strbuf_release(&buffer);
3dfaf7bc
NH
2047}
2048
2049static int verify_merge_base(unsigned char *head_sha1, unsigned char *branch_sha1)
2050{
61ffbcb9
JS
2051 struct commit *head = lookup_commit(head_sha1);
2052 struct commit *branch = lookup_commit(branch_sha1);
2053 struct commit_list *merge_bases = get_merge_bases(head, branch, 1);
3dfaf7bc 2054
0bc87ffb 2055 return (merge_bases && !merge_bases->next && merge_bases->item == branch);
3dfaf7bc
NH
2056}
2057
2058static int delete_remote_branch(char *pattern, int force)
2059{
2060 struct ref *refs = remote_refs;
2061 struct ref *remote_ref = NULL;
2062 unsigned char head_sha1[20];
2063 char *symref = NULL;
2064 int match;
2065 int patlen = strlen(pattern);
2066 int i;
2067 struct active_request_slot *slot;
2068 struct slot_results results;
2069 char *url;
2070
2071 /* Find the remote branch(es) matching the specified branch name */
2072 for (match = 0; refs; refs = refs->next) {
2073 char *name = refs->name;
2074 int namelen = strlen(name);
2075 if (namelen < patlen ||
2076 memcmp(name + namelen - patlen, pattern, patlen))
2077 continue;
2078 if (namelen != patlen && name[namelen - patlen - 1] != '/')
2079 continue;
2080 match++;
2081 remote_ref = refs;
2082 }
2083 if (match == 0)
2084 return error("No remote branch matches %s", pattern);
2085 if (match != 1)
2086 return error("More than one remote branch matches %s",
2087 pattern);
2088
2089 /*
2090 * Remote HEAD must be a symref (not exactly foolproof; a remote
2091 * symlink to a symref will look like a symref)
2092 */
2093 fetch_symref("HEAD", &symref, head_sha1);
2094 if (!symref)
2095 return error("Remote HEAD is not a symref");
2096
2097 /* Remote branch must not be the remote HEAD */
2098 for (i=0; symref && i<MAXDEPTH; i++) {
2099 if (!strcmp(remote_ref->name, symref))
2100 return error("Remote branch %s is the current HEAD",
2101 remote_ref->name);
2102 fetch_symref(symref, &symref, head_sha1);
2103 }
2104
2105 /* Run extra sanity checks if delete is not forced */
2106 if (!force) {
2107 /* Remote HEAD must resolve to a known object */
2108 if (symref)
2109 return error("Remote HEAD symrefs too deep");
2110 if (is_zero_sha1(head_sha1))
2111 return error("Unable to resolve remote HEAD");
2112 if (!has_sha1_file(head_sha1))
2113 return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
2114
2115 /* Remote branch must resolve to a known object */
2116 if (is_zero_sha1(remote_ref->old_sha1))
2117 return error("Unable to resolve remote branch %s",
2118 remote_ref->name);
2119 if (!has_sha1_file(remote_ref->old_sha1))
2120 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));
2121
2122 /* Remote branch must be an ancestor of remote HEAD */
2123 if (!verify_merge_base(head_sha1, remote_ref->old_sha1)) {
00ae8289
BF
2124 return error("The branch '%s' is not an ancestor "
2125 "of your current HEAD.\n"
2126 "If you are sure you want to delete it,"
2127 " run:\n\t'git http-push -D %s %s'",
2128 remote_ref->name, remote->url, pattern);
3dfaf7bc
NH
2129 }
2130 }
2131
2132 /* Send delete request */
2133 fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
2134 url = xmalloc(strlen(remote->url) + strlen(remote_ref->name) + 1);
2135 sprintf(url, "%s%s", remote->url, remote_ref->name);
2136 slot = get_active_slot();
2137 slot->results = &results;
2138 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
2139 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
2140 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2141 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_DELETE);
2142 if (start_active_slot(slot)) {
2143 run_active_slot(slot);
2144 free(url);
2145 if (results.curl_result != CURLE_OK)
2146 return error("DELETE request failed (%d/%ld)\n",
2147 results.curl_result, results.http_code);
2148 } else {
2149 free(url);
2150 return error("Unable to start DELETE request");
2151 }
2152
2153 return 0;
2154}
2155
58e60dd2
NH
2156int main(int argc, char **argv)
2157{
58e60dd2
NH
2158 struct transfer_request *request;
2159 struct transfer_request *next_request;
2160 int nr_refspec = 0;
2161 char **refspec = NULL;
512d632c 2162 struct remote_lock *ref_lock = NULL;
197e8951 2163 struct remote_lock *info_ref_lock = NULL;
aa1dbc98 2164 struct rev_info revs;
3dfaf7bc
NH
2165 int delete_branch = 0;
2166 int force_delete = 0;
1a703cba 2167 int objects_to_send;
58e60dd2
NH
2168 int rc = 0;
2169 int i;
8c9e7947
JH
2170 int new_refs;
2171 struct ref *ref;
3057ded0 2172 char *rewritten_url = NULL;
58e60dd2 2173
5a327713 2174 setup_git_directory();
58e60dd2 2175
512d632c 2176 remote = xcalloc(sizeof(*remote), 1);
58e60dd2
NH
2177
2178 argv++;
2179 for (i = 1; i < argc; i++, argv++) {
2180 char *arg = *argv;
2181
2182 if (*arg == '-') {
aa1dbc98 2183 if (!strcmp(arg, "--all")) {
28b9d6e5 2184 push_all = MATCH_REFS_ALL;
58e60dd2
NH
2185 continue;
2186 }
2187 if (!strcmp(arg, "--force")) {
2188 force_all = 1;
2189 continue;
2190 }
fe5d1d3e
SP
2191 if (!strcmp(arg, "--dry-run")) {
2192 dry_run = 1;
2193 continue;
2194 }
58e60dd2
NH
2195 if (!strcmp(arg, "--verbose")) {
2196 push_verbosely = 1;
2197 continue;
2198 }
3dfaf7bc
NH
2199 if (!strcmp(arg, "-d")) {
2200 delete_branch = 1;
2201 continue;
2202 }
2203 if (!strcmp(arg, "-D")) {
2204 delete_branch = 1;
2205 force_delete = 1;
2206 continue;
2207 }
58e60dd2
NH
2208 }
2209 if (!remote->url) {
aa1dbc98 2210 char *path = strstr(arg, "//");
8c9e7947 2211 remote->url = arg;
aa1dbc98 2212 if (path) {
ef9e58c8 2213 path = strchr(path+2, '/');
aa1dbc98
NH
2214 if (path)
2215 remote->path_len = strlen(path);
2216 }
58e60dd2
NH
2217 continue;
2218 }
2219 refspec = argv;
2220 nr_refspec = argc - i;
2221 break;
2222 }
2223
f854824b
GB
2224#ifndef USE_CURL_MULTI
2225 die("git-push is not available for http/https repository when not compiled with USE_CURL_MULTI");
2226#endif
2227
3e9fabc8
NH
2228 if (!remote->url)
2229 usage(http_push_usage);
2230
3dfaf7bc
NH
2231 if (delete_branch && nr_refspec != 1)
2232 die("You must specify only one branch name when deleting a remote branch");
2233
aa1dbc98 2234 memset(remote_dir_exists, -1, 256);
0dd276b8 2235
29508e1e 2236 http_init();
58e60dd2
NH
2237
2238 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
58e60dd2 2239
3057ded0
GB
2240 if (remote->url && remote->url[strlen(remote->url)-1] != '/') {
2241 rewritten_url = malloc(strlen(remote->url)+2);
2242 strcpy(rewritten_url, remote->url);
2243 strcat(rewritten_url, "/");
2244 remote->url = rewritten_url;
2245 ++remote->path_len;
2246 }
2247
58e60dd2 2248 /* Verify DAV compliance/lock support */
acf59575 2249 if (!locking_available()) {
58e60dd2
NH
2250 rc = 1;
2251 goto cleanup;
2252 }
2253
197e8951
NH
2254 /* Check whether the remote has server info files */
2255 remote->can_update_info_refs = 0;
2256 remote->has_info_refs = remote_exists("info/refs");
2257 remote->has_info_packs = remote_exists("objects/info/packs");
2258 if (remote->has_info_refs) {
2259 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
2260 if (info_ref_lock)
2261 remote->can_update_info_refs = 1;
9bdbabad
GB
2262 else {
2263 fprintf(stderr, "Error: cannot lock existing info/refs\n");
2264 rc = 1;
2265 goto cleanup;
2266 }
197e8951
NH
2267 }
2268 if (remote->has_info_packs)
2269 fetch_indices();
2270
aa1dbc98
NH
2271 /* Get a list of all local and remote heads to validate refspecs */
2272 get_local_heads();
2273 fprintf(stderr, "Fetching remote heads...\n");
2274 get_dav_remote_heads();
2275
3dfaf7bc
NH
2276 /* Remove a remote branch if -d or -D was specified */
2277 if (delete_branch) {
2278 if (delete_remote_branch(refspec[0], force_delete) == -1)
2279 fprintf(stderr, "Unable to delete remote branch %s\n",
2280 refspec[0]);
2281 goto cleanup;
2282 }
2283
aa1dbc98
NH
2284 /* match them up */
2285 if (!remote_tail)
2286 remote_tail = &remote_refs;
2287 if (match_refs(local_refs, remote_refs, &remote_tail,
9116de59
GB
2288 nr_refspec, (const char **) refspec, push_all)) {
2289 rc = -1;
2290 goto cleanup;
2291 }
aa1dbc98
NH
2292 if (!remote_refs) {
2293 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
9116de59
GB
2294 rc = 0;
2295 goto cleanup;
aa1dbc98
NH
2296 }
2297
8c9e7947 2298 new_refs = 0;
aa1dbc98
NH
2299 for (ref = remote_refs; ref; ref = ref->next) {
2300 char old_hex[60], *new_hex;
8c9e7947
JH
2301 const char *commit_argv[4];
2302 int commit_argc;
2303 char *new_sha1_hex, *old_sha1_hex;
2304
aa1dbc98
NH
2305 if (!ref->peer_ref)
2306 continue;
a89fccd2 2307 if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
aa1dbc98
NH
2308 if (push_verbosely || 1)
2309 fprintf(stderr, "'%s': up-to-date\n", ref->name);
2310 continue;
2311 }
2312
2313 if (!force_all &&
2314 !is_zero_sha1(ref->old_sha1) &&
2315 !ref->force) {
2316 if (!has_sha1_file(ref->old_sha1) ||
2317 !ref_newer(ref->peer_ref->new_sha1,
2318 ref->old_sha1)) {
00ae8289
BF
2319 /*
2320 * We do not have the remote ref, or
aa1dbc98
NH
2321 * we know that the remote ref is not
2322 * an ancestor of what we are trying to
2323 * push. Either way this can be losing
2324 * commits at the remote end and likely
2325 * we were not up to date to begin with.
2326 */
00ae8289
BF
2327 error("remote '%s' is not an ancestor of\n"
2328 "local '%s'.\n"
2329 "Maybe you are not up-to-date and "
aa1dbc98
NH
2330 "need to pull first?",
2331 ref->name,
2332 ref->peer_ref->name);
1a703cba 2333 rc = -2;
aa1dbc98
NH
2334 continue;
2335 }
58e60dd2 2336 }
e702496e 2337 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
aa1dbc98
NH
2338 if (is_zero_sha1(ref->new_sha1)) {
2339 error("cannot happen anymore");
1a703cba 2340 rc = -3;
aa1dbc98 2341 continue;
58e60dd2 2342 }
aa1dbc98
NH
2343 new_refs++;
2344 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
2345 new_hex = sha1_to_hex(ref->new_sha1);
2346
2347 fprintf(stderr, "updating '%s'", ref->name);
2348 if (strcmp(ref->name, ref->peer_ref->name))
2349 fprintf(stderr, " using '%s'", ref->peer_ref->name);
2350 fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
fe5d1d3e
SP
2351 if (dry_run)
2352 continue;
58e60dd2
NH
2353
2354 /* Lock remote branch ref */
aa1dbc98
NH
2355 ref_lock = lock_remote(ref->name, LOCK_TIME);
2356 if (ref_lock == NULL) {
58e60dd2 2357 fprintf(stderr, "Unable to lock remote branch %s\n",
aa1dbc98 2358 ref->name);
58e60dd2
NH
2359 rc = 1;
2360 continue;
2361 }
2362
aa1dbc98 2363 /* Set up revision info for this refspec */
8c9e7947 2364 commit_argc = 3;
9befac47 2365 new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
8c9e7947 2366 old_sha1_hex = NULL;
5241bfe6
NH
2367 commit_argv[1] = "--objects";
2368 commit_argv[2] = new_sha1_hex;
aa1dbc98
NH
2369 if (!push_all && !is_zero_sha1(ref->old_sha1)) {
2370 old_sha1_hex = xmalloc(42);
2371 sprintf(old_sha1_hex, "^%s",
2372 sha1_to_hex(ref->old_sha1));
5241bfe6 2373 commit_argv[3] = old_sha1_hex;
aa1dbc98 2374 commit_argc++;
58e60dd2 2375 }
db6296a5 2376 init_revisions(&revs, setup_git_directory());
aa1dbc98 2377 setup_revisions(commit_argc, commit_argv, &revs, NULL);
aa1dbc98
NH
2378 free(new_sha1_hex);
2379 if (old_sha1_hex) {
2380 free(old_sha1_hex);
2381 commit_argv[1] = NULL;
58e60dd2
NH
2382 }
2383
aa1dbc98 2384 /* Generate a list of objects that need to be pushed */
58e60dd2 2385 pushing = 0;
aa1dbc98
NH
2386 prepare_revision_walk(&revs);
2387 mark_edges_uninteresting(revs.commits);
1a703cba 2388 objects_to_send = get_delta(&revs, ref_lock);
29508e1e 2389 finish_all_active_slots();
58e60dd2
NH
2390
2391 /* Push missing objects to remote, this would be a
2392 convenient time to pack them first if appropriate. */
2393 pushing = 1;
1a703cba
NH
2394 if (objects_to_send)
2395 fprintf(stderr, " sending %d objects\n",
2396 objects_to_send);
b3ca4e4e 2397#ifdef USE_CURL_MULTI
29508e1e 2398 fill_active_slots();
fc57b6aa 2399 add_fill_function(NULL, fill_active_slot);
b3ca4e4e 2400#endif
add8e8ce
JS
2401 do {
2402 finish_all_active_slots();
2403#ifdef USE_CURL_MULTI
2404 fill_active_slots();
2405#endif
2406 } while (request_queue_head && !aborted);
58e60dd2
NH
2407
2408 /* Update the remote branch if all went well */
aa1dbc98
NH
2409 if (aborted || !update_remote(ref->new_sha1, ref_lock)) {
2410 rc = 1;
2411 goto unlock;
58e60dd2
NH
2412 }
2413
2414 unlock:
aa1dbc98
NH
2415 if (!rc)
2416 fprintf(stderr, " done\n");
2417 unlock_remote(ref_lock);
512d632c 2418 check_locks();
58e60dd2
NH
2419 }
2420
197e8951
NH
2421 /* Update remote server info if appropriate */
2422 if (remote->has_info_refs && new_refs) {
2423 if (info_ref_lock && remote->can_update_info_refs) {
2424 fprintf(stderr, "Updating remote server info\n");
fe5d1d3e
SP
2425 if (!dry_run)
2426 update_remote_info_refs(info_ref_lock);
197e8951
NH
2427 } else {
2428 fprintf(stderr, "Unable to update server info\n");
2429 }
2430 }
197e8951 2431
58e60dd2 2432 cleanup:
3057ded0
GB
2433 if (rewritten_url)
2434 free(rewritten_url);
9116de59
GB
2435 if (info_ref_lock)
2436 unlock_remote(info_ref_lock);
58e60dd2
NH
2437 free(remote);
2438
2439 curl_slist_free_all(no_pragma_header);
58e60dd2 2440
29508e1e 2441 http_cleanup();
58e60dd2
NH
2442
2443 request = request_queue_head;
2444 while (request != NULL) {
2445 next_request = request->next;
2446 release_request(request);
58e60dd2
NH
2447 request = next_request;
2448 }
2449
58e60dd2
NH
2450 return rc;
2451}