1#include "cache.h"
2#include "commit.h"
3#include "pack.h"
4#include "fetch.h"
5#include "tag.h"
6#include "blob.h"
7#include "http.h"
8#include "refs.h"
9#include "diff.h"
10#include "revision.h"
11#include "exec_cmd.h"
12#include "remote.h"
13#include <expat.h>
15static const char http_push_usage[] =
17"git-http-push [--all] [--force] [--verbose] <remote> [<head>...]\n";
18#ifndef XML_STATUS_OK
20enum XML_Status {
21 XML_STATUS_OK = 1,
22 XML_STATUS_ERROR = 0
23};
24#define XML_STATUS_OK 1
25#define XML_STATUS_ERROR 0
26#endif
27#define PREV_BUF_SIZE 4096
29#define RANGE_HEADER_SIZE 30
30/* 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/* 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/* 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/* 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#define LOCK_TIME 600
62#define LOCK_REFRESH 30
63/* bits #0-15 in revision.h */
65#define LOCAL (1u<<16)
67#define REMOTE (1u<<17)
68#define FETCHING (1u<<18)
69#define PUSHING (1u<<19)
70/* We allow "recursive" symbolic refs. Only within reason, though */
72#define MAXDEPTH 5
73static int pushing;
75static int aborted;
76static signed char remote_dir_exists[256];
77static struct curl_slist *no_pragma_header;
79static struct curl_slist *default_headers;
80static int push_verbosely;
82static int push_all;
83static int force_all;
84static struct object_list *objects;
86struct repo
88{
89 char *url;
90 int path_len;
91 int has_info_refs;
92 int can_update_info_refs;
93 int has_info_packs;
94 struct packed_git *packs;
95 struct remote_lock *locks;
96};
97static struct repo *remote;
99enum transfer_state {
101 NEED_FETCH,
102 RUN_FETCH_LOOSE,
103 RUN_FETCH_PACKED,
104 NEED_PUSH,
105 RUN_MKCOL,
106 RUN_PUT,
107 RUN_MOVE,
108 ABORTED,
109 COMPLETE,
110};
111struct transfer_request
113{
114 struct object *obj;
115 char *url;
116 char *dest;
117 struct remote_lock *lock;
118 struct curl_slist *headers;
119 struct buffer buffer;
120 char filename[PATH_MAX];
121 char tmpfile[PATH_MAX];
122 int local_fileno;
123 FILE *local_stream;
124 enum transfer_state state;
125 CURLcode curl_result;
126 char errorstr[CURL_ERROR_SIZE];
127 long http_code;
128 unsigned char real_sha1[20];
129 SHA_CTX c;
130 z_stream stream;
131 int zret;
132 int rename;
133 void *userData;
134 struct active_request_slot *slot;
135 struct transfer_request *next;
136};
137static struct transfer_request *request_queue_head;
139struct xml_ctx
141{
142 char *name;
143 int len;
144 char *cdata;
145 void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
146 void *userData;
147};
148struct remote_lock
150{
151 char *url;
152 char *owner;
153 char *token;
154 time_t start_time;
155 long timeout;
156 int refreshing;
157 struct remote_lock *next;
158};
159/* Flags that control remote_ls processing */
161#define PROCESS_FILES (1u << 0)
162#define PROCESS_DIRS (1u << 1)
163#define RECURSIVE (1u << 2)
164/* Flags that remote_ls passes to callback functions */
166#define IS_DIR (1u << 0)
167struct 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};
178static void finish_request(struct transfer_request *request);
180static void release_request(struct transfer_request *request);
181static void process_response(void *callback_data)
183{
184 struct transfer_request *request =
185 (struct transfer_request *)callback_data;
186 finish_request(request);
188}
189#ifdef USE_CURL_MULTI
191static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
192 void *data)
193{
194 unsigned char expn[4096];
195 size_t size = eltsize * nmemb;
196 int posn = 0;
197 struct transfer_request *request = (struct transfer_request *)data;
198 do {
199 ssize_t retval = xwrite(request->local_fileno,
200 (char *) ptr + posn, size - posn);
201 if (retval < 0)
202 return posn;
203 posn += retval;
204 } while (posn < size);
205 request->stream.avail_in = size;
207 request->stream.next_in = ptr;
208 do {
209 request->stream.next_out = expn;
210 request->stream.avail_out = sizeof(expn);
211 request->zret = inflate(&request->stream, Z_SYNC_FLUSH);
212 SHA1_Update(&request->c, expn,
213 sizeof(expn) - request->stream.avail_out);
214 } while (request->stream.avail_in && request->zret == Z_OK);
215 data_received++;
216 return size;
217}
218static void start_fetch_loose(struct transfer_request *request)
220{
221 char *hex = sha1_to_hex(request->obj->sha1);
222 char *filename;
223 char prevfile[PATH_MAX];
224 char *url;
225 char *posn;
226 int prevlocal;
227 unsigned char prev_buf[PREV_BUF_SIZE];
228 ssize_t prev_read = 0;
229 long prev_posn = 0;
230 char range[RANGE_HEADER_SIZE];
231 struct curl_slist *range_header = NULL;
232 struct active_request_slot *slot;
233 filename = sha1_file_name(request->obj->sha1);
235 snprintf(request->filename, sizeof(request->filename), "%s", filename);
236 snprintf(request->tmpfile, sizeof(request->tmpfile),
237 "%s.temp", filename);
238 snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename);
240 unlink(prevfile);
241 rename(request->tmpfile, prevfile);
242 unlink(request->tmpfile);
243 if (request->local_fileno != -1)
245 error("fd leakage in start: %d", request->local_fileno);
246 request->local_fileno = open(request->tmpfile,
247 O_WRONLY | O_CREAT | O_EXCL, 0666);
248 /* This could have failed due to the "lazy directory creation";
249 * try to mkdir the last path component.
250 */
251 if (request->local_fileno < 0 && errno == ENOENT) {
252 char *dir = strrchr(request->tmpfile, '/');
253 if (dir) {
254 *dir = 0;
255 mkdir(request->tmpfile, 0777);
256 *dir = '/';
257 }
258 request->local_fileno = open(request->tmpfile,
259 O_WRONLY | O_CREAT | O_EXCL, 0666);
260 }
261 if (request->local_fileno < 0) {
263 request->state = ABORTED;
264 error("Couldn't create temporary file %s for %s: %s",
265 request->tmpfile, request->filename, strerror(errno));
266 return;
267 }
268 memset(&request->stream, 0, sizeof(request->stream));
270 inflateInit(&request->stream);
272 SHA1_Init(&request->c);
274 url = xmalloc(strlen(remote->url) + 50);
276 request->url = xmalloc(strlen(remote->url) + 50);
277 strcpy(url, remote->url);
278 posn = url + strlen(remote->url);
279 strcpy(posn, "objects/");
280 posn += 8;
281 memcpy(posn, hex, 2);
282 posn += 2;
283 *(posn++) = '/';
284 strcpy(posn, hex + 2);
285 strcpy(request->url, url);
286 /* If a previous temp file is present, process what was already
288 fetched. */
289 prevlocal = open(prevfile, O_RDONLY);
290 if (prevlocal != -1) {
291 do {
292 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
293 if (prev_read>0) {
294 if (fwrite_sha1_file(prev_buf,
295 1,
296 prev_read,
297 request) == prev_read) {
298 prev_posn += prev_read;
299 } else {
300 prev_read = -1;
301 }
302 }
303 } while (prev_read > 0);
304 close(prevlocal);
305 }
306 unlink(prevfile);
307 /* Reset inflate/SHA1 if there was an error reading the previous temp
309 file; also rewind to the beginning of the local file. */
310 if (prev_read == -1) {
311 memset(&request->stream, 0, sizeof(request->stream));
312 inflateInit(&request->stream);
313 SHA1_Init(&request->c);
314 if (prev_posn>0) {
315 prev_posn = 0;
316 lseek(request->local_fileno, 0, SEEK_SET);
317 ftruncate(request->local_fileno, 0);
318 }
319 }
320 slot = get_active_slot();
322 slot->callback_func = process_response;
323 slot->callback_data = request;
324 request->slot = slot;
325 curl_easy_setopt(slot->curl, CURLOPT_FILE, request);
327 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
328 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
329 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
330 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
331 /* If we have successfully processed data from a previous fetch
333 attempt, only fetch the data we don't already have. */
334 if (prev_posn>0) {
335 if (push_verbosely)
336 fprintf(stderr,
337 "Resuming fetch of object %s at byte %ld\n",
338 hex, prev_posn);
339 sprintf(range, "Range: bytes=%ld-", prev_posn);
340 range_header = curl_slist_append(range_header, range);
341 curl_easy_setopt(slot->curl,
342 CURLOPT_HTTPHEADER, range_header);
343 }
344 /* Try to get the request started, abort the request on error */
346 request->state = RUN_FETCH_LOOSE;
347 if (!start_active_slot(slot)) {
348 fprintf(stderr, "Unable to start GET request\n");
349 remote->can_update_info_refs = 0;
350 release_request(request);
351 }
352}
353static void start_mkcol(struct transfer_request *request)
355{
356 char *hex = sha1_to_hex(request->obj->sha1);
357 struct active_request_slot *slot;
358 char *posn;
359 request->url = xmalloc(strlen(remote->url) + 13);
361 strcpy(request->url, remote->url);
362 posn = request->url + strlen(remote->url);
363 strcpy(posn, "objects/");
364 posn += 8;
365 memcpy(posn, hex, 2);
366 posn += 2;
367 strcpy(posn, "/");
368 slot = get_active_slot();
370 slot->callback_func = process_response;
371 slot->callback_data = request;
372 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
373 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
374 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
375 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
376 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
377 if (start_active_slot(slot)) {
379 request->slot = slot;
380 request->state = RUN_MKCOL;
381 } else {
382 request->state = ABORTED;
383 free(request->url);
384 request->url = NULL;
385 }
386}
387#endif
388static void start_fetch_packed(struct transfer_request *request)
390{
391 char *url;
392 struct packed_git *target;
393 FILE *packfile;
394 char *filename;
395 long prev_posn = 0;
396 char range[RANGE_HEADER_SIZE];
397 struct curl_slist *range_header = NULL;
398 struct transfer_request *check_request = request_queue_head;
400 struct active_request_slot *slot;
401 target = find_sha1_pack(request->obj->sha1, remote->packs);
403 if (!target) {
404 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
405 remote->can_update_info_refs = 0;
406 release_request(request);
407 return;
408 }
409 fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
411 fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
412 filename = sha1_pack_name(target->sha1);
414 snprintf(request->filename, sizeof(request->filename), "%s", filename);
415 snprintf(request->tmpfile, sizeof(request->tmpfile),
416 "%s.temp", filename);
417 url = xmalloc(strlen(remote->url) + 64);
419 sprintf(url, "%sobjects/pack/pack-%s.pack",
420 remote->url, sha1_to_hex(target->sha1));
421 /* Make sure there isn't another open request for this pack */
423 while (check_request) {
424 if (check_request->state == RUN_FETCH_PACKED &&
425 !strcmp(check_request->url, url)) {
426 free(url);
427 release_request(request);
428 return;
429 }
430 check_request = check_request->next;
431 }
432 packfile = fopen(request->tmpfile, "a");
434 if (!packfile) {
435 fprintf(stderr, "Unable to open local file %s for pack",
436 filename);
437 remote->can_update_info_refs = 0;
438 free(url);
439 return;
440 }
441 slot = get_active_slot();
443 slot->callback_func = process_response;
444 slot->callback_data = request;
445 request->slot = slot;
446 request->local_stream = packfile;
447 request->userData = target;
448 request->url = url;
450 curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
451 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
452 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
453 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
454 slot->local = packfile;
455 /* If there is data present from a previous transfer attempt,
457 resume where it left off */
458 prev_posn = ftell(packfile);
459 if (prev_posn>0) {
460 if (push_verbosely)
461 fprintf(stderr,
462 "Resuming fetch of pack %s at byte %ld\n",
463 sha1_to_hex(target->sha1), prev_posn);
464 sprintf(range, "Range: bytes=%ld-", prev_posn);
465 range_header = curl_slist_append(range_header, range);
466 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
467 }
468 /* Try to get the request started, abort the request on error */
470 request->state = RUN_FETCH_PACKED;
471 if (!start_active_slot(slot)) {
472 fprintf(stderr, "Unable to start GET request\n");
473 remote->can_update_info_refs = 0;
474 release_request(request);
475 }
476}
477static void start_put(struct transfer_request *request)
479{
480 char *hex = sha1_to_hex(request->obj->sha1);
481 struct active_request_slot *slot;
482 char *posn;
483 enum object_type type;
484 char hdr[50];
485 void *unpacked;
486 unsigned long len;
487 int hdrlen;
488 ssize_t size;
489 z_stream stream;
490 unpacked = read_sha1_file(request->obj->sha1, &type, &len);
492 hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
493 /* Set it up */
495 memset(&stream, 0, sizeof(stream));
496 deflateInit(&stream, zlib_compression_level);
497 size = deflateBound(&stream, len + hdrlen);
498 request->buffer.buffer = xmalloc(size);
499 /* Compress it */
501 stream.next_out = request->buffer.buffer;
502 stream.avail_out = size;
503 /* First header.. */
505 stream.next_in = (void *)hdr;
506 stream.avail_in = hdrlen;
507 while (deflate(&stream, 0) == Z_OK)
508 /* nothing */;
509 /* 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 request->buffer.size = stream.total_out;
519 request->buffer.posn = 0;
520 request->url = xmalloc(strlen(remote->url) +
522 strlen(request->lock->token) + 51);
523 strcpy(request->url, remote->url);
524 posn = request->url + strlen(remote->url);
525 strcpy(posn, "objects/");
526 posn += 8;
527 memcpy(posn, hex, 2);
528 posn += 2;
529 *(posn++) = '/';
530 strcpy(posn, hex + 2);
531 request->dest = xmalloc(strlen(request->url) + 14);
532 sprintf(request->dest, "Destination: %s", request->url);
533 posn += 38;
534 *(posn++) = '_';
535 strcpy(posn, request->lock->token);
536 slot = get_active_slot();
538 slot->callback_func = process_response;
539 slot->callback_data = request;
540 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
541 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.size);
542 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
543 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
544 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
545 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
546 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
547 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
548 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
549 if (start_active_slot(slot)) {
551 request->slot = slot;
552 request->state = RUN_PUT;
553 } else {
554 request->state = ABORTED;
555 free(request->url);
556 request->url = NULL;
557 }
558}
559static void start_move(struct transfer_request *request)
561{
562 struct active_request_slot *slot;
563 struct curl_slist *dav_headers = NULL;
564 slot = get_active_slot();
566 slot->callback_func = process_response;
567 slot->callback_data = request;
568 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
569 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
570 dav_headers = curl_slist_append(dav_headers, request->dest);
571 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
572 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
573 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
574 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
575 if (start_active_slot(slot)) {
577 request->slot = slot;
578 request->state = RUN_MOVE;
579 } else {
580 request->state = ABORTED;
581 free(request->url);
582 request->url = NULL;
583 }
584}
585static int refresh_lock(struct remote_lock *lock)
587{
588 struct active_request_slot *slot;
589 struct slot_results results;
590 char *if_header;
591 char timeout_header[25];
592 struct curl_slist *dav_headers = NULL;
593 int rc = 0;
594 lock->refreshing = 1;
596 if_header = xmalloc(strlen(lock->token) + 25);
598 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
599 sprintf(timeout_header, "Timeout: Second-%ld", lock->timeout);
600 dav_headers = curl_slist_append(dav_headers, if_header);
601 dav_headers = curl_slist_append(dav_headers, timeout_header);
602 slot = get_active_slot();
604 slot->results = &results;
605 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
606 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
607 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
608 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
609 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
610 if (start_active_slot(slot)) {
612 run_active_slot(slot);
613 if (results.curl_result != CURLE_OK) {
614 fprintf(stderr, "LOCK HTTP error %ld\n",
615 results.http_code);
616 } else {
617 lock->start_time = time(NULL);
618 rc = 1;
619 }
620 }
621 lock->refreshing = 0;
623 curl_slist_free_all(dav_headers);
624 free(if_header);
625 return rc;
627}
628static void check_locks(void)
630{
631 struct remote_lock *lock = remote->locks;
632 time_t current_time = time(NULL);
633 int time_remaining;
634 while (lock) {
636 time_remaining = lock->start_time + lock->timeout -
637 current_time;
638 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
639 if (!refresh_lock(lock)) {
640 fprintf(stderr,
641 "Unable to refresh lock for %s\n",
642 lock->url);
643 aborted = 1;
644 return;
645 }
646 }
647 lock = lock->next;
648 }
649}
650static void release_request(struct transfer_request *request)
652{
653 struct transfer_request *entry = request_queue_head;
654 if (request == request_queue_head) {
656 request_queue_head = request->next;
657 } else {
658 while (entry->next != NULL && entry->next != request)
659 entry = entry->next;
660 if (entry->next == request)
661 entry->next = entry->next->next;
662 }
663 if (request->local_fileno != -1)
665 close(request->local_fileno);
666 if (request->local_stream)
667 fclose(request->local_stream);
668 if (request->url != NULL)
669 free(request->url);
670 free(request);
671}
672static void finish_request(struct transfer_request *request)
674{
675 struct stat st;
676 struct packed_git *target;
677 struct packed_git **lst;
678 request->curl_result = request->slot->curl_result;
680 request->http_code = request->slot->http_code;
681 request->slot = NULL;
682 /* Keep locks active */
684 check_locks();
685 if (request->headers != NULL)
687 curl_slist_free_all(request->headers);
688 /* URL is reused for MOVE after PUT */
690 if (request->state != RUN_PUT) {
691 free(request->url);
692 request->url = NULL;
693 }
694 if (request->state == RUN_MKCOL) {
696 if (request->curl_result == CURLE_OK ||
697 request->http_code == 405) {
698 remote_dir_exists[request->obj->sha1[0]] = 1;
699 start_put(request);
700 } else {
701 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
702 sha1_to_hex(request->obj->sha1),
703 request->curl_result, request->http_code);
704 request->state = ABORTED;
705 aborted = 1;
706 }
707 } else if (request->state == RUN_PUT) {
708 if (request->curl_result == CURLE_OK) {
709 start_move(request);
710 } else {
711 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
712 sha1_to_hex(request->obj->sha1),
713 request->curl_result, request->http_code);
714 request->state = ABORTED;
715 aborted = 1;
716 }
717 } else if (request->state == RUN_MOVE) {
718 if (request->curl_result == CURLE_OK) {
719 if (push_verbosely)
720 fprintf(stderr, " sent %s\n",
721 sha1_to_hex(request->obj->sha1));
722 request->obj->flags |= REMOTE;
723 release_request(request);
724 } else {
725 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
726 sha1_to_hex(request->obj->sha1),
727 request->curl_result, request->http_code);
728 request->state = ABORTED;
729 aborted = 1;
730 }
731 } else if (request->state == RUN_FETCH_LOOSE) {
732 fchmod(request->local_fileno, 0444);
733 close(request->local_fileno); request->local_fileno = -1;
734 if (request->curl_result != CURLE_OK &&
736 request->http_code != 416) {
737 if (stat(request->tmpfile, &st) == 0) {
738 if (st.st_size == 0)
739 unlink(request->tmpfile);
740 }
741 } else {
742 if (request->http_code == 416)
743 fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
744 inflateEnd(&request->stream);
746 SHA1_Final(request->real_sha1, &request->c);
747 if (request->zret != Z_STREAM_END) {
748 unlink(request->tmpfile);
749 } else if (hashcmp(request->obj->sha1, request->real_sha1)) {
750 unlink(request->tmpfile);
751 } else {
752 request->rename =
753 move_temp_to_file(
754 request->tmpfile,
755 request->filename);
756 if (request->rename == 0) {
757 request->obj->flags |= (LOCAL | REMOTE);
758 }
759 }
760 }
761 /* Try fetching packed if necessary */
763 if (request->obj->flags & LOCAL)
764 release_request(request);
765 else
766 start_fetch_packed(request);
767 } else if (request->state == RUN_FETCH_PACKED) {
769 if (request->curl_result != CURLE_OK) {
770 fprintf(stderr, "Unable to get pack file %s\n%s",
771 request->url, curl_errorstr);
772 remote->can_update_info_refs = 0;
773 } else {
774 off_t pack_size = ftell(request->local_stream);
775 fclose(request->local_stream);
777 request->local_stream = NULL;
778 if (!move_temp_to_file(request->tmpfile,
779 request->filename)) {
780 target = (struct packed_git *)request->userData;
781 target->pack_size = pack_size;
782 lst = &remote->packs;
783 while (*lst != target)
784 lst = &((*lst)->next);
785 *lst = (*lst)->next;
786 if (!verify_pack(target, 0))
788 install_packed_git(target);
789 else
790 remote->can_update_info_refs = 0;
791 }
792 }
793 release_request(request);
794 }
795}
796#ifdef USE_CURL_MULTI
798static int fill_active_slot(void *unused)
799{
800 struct transfer_request *request = request_queue_head;
801 if (aborted)
803 return 0;
804 for (request = request_queue_head; request; request = request->next) {
806 if (request->state == NEED_FETCH) {
807 start_fetch_loose(request);
808 return 1;
809 } else if (pushing && request->state == NEED_PUSH) {
810 if (remote_dir_exists[request->obj->sha1[0]] == 1) {
811 start_put(request);
812 } else {
813 start_mkcol(request);
814 }
815 return 1;
816 }
817 }
818 return 0;
819}
820#endif
821static void get_remote_object_list(unsigned char parent);
823static void add_fetch_request(struct object *obj)
825{
826 struct transfer_request *request;
827 check_locks();
829 /*
831 * Don't fetch the object if it's known to exist locally
832 * or is already in the request queue
833 */
834 if (remote_dir_exists[obj->sha1[0]] == -1)
835 get_remote_object_list(obj->sha1[0]);
836 if (obj->flags & (LOCAL | FETCHING))
837 return;
838 obj->flags |= FETCHING;
840 request = xmalloc(sizeof(*request));
841 request->obj = obj;
842 request->url = NULL;
843 request->lock = NULL;
844 request->headers = NULL;
845 request->local_fileno = -1;
846 request->local_stream = NULL;
847 request->state = NEED_FETCH;
848 request->next = request_queue_head;
849 request_queue_head = request;
850#ifdef USE_CURL_MULTI
852 fill_active_slots();
853 step_active_slots();
854#endif
855}
856static int add_send_request(struct object *obj, struct remote_lock *lock)
858{
859 struct transfer_request *request = request_queue_head;
860 struct packed_git *target;
861 /* Keep locks active */
863 check_locks();
864 /*
866 * Don't push the object if it's known to exist on the remote
867 * or is already in the request queue
868 */
869 if (remote_dir_exists[obj->sha1[0]] == -1)
870 get_remote_object_list(obj->sha1[0]);
871 if (obj->flags & (REMOTE | PUSHING))
872 return 0;
873 target = find_sha1_pack(obj->sha1, remote->packs);
874 if (target) {
875 obj->flags |= REMOTE;
876 return 0;
877 }
878 obj->flags |= PUSHING;
880 request = xmalloc(sizeof(*request));
881 request->obj = obj;
882 request->url = NULL;
883 request->lock = lock;
884 request->headers = NULL;
885 request->local_fileno = -1;
886 request->local_stream = NULL;
887 request->state = NEED_PUSH;
888 request->next = request_queue_head;
889 request_queue_head = request;
890#ifdef USE_CURL_MULTI
892 fill_active_slots();
893 step_active_slots();
894#endif
895 return 1;
897}
898static int fetch_index(unsigned char *sha1)
900{
901 char *hex = sha1_to_hex(sha1);
902 char *filename;
903 char *url;
904 char tmpfile[PATH_MAX];
905 long prev_posn = 0;
906 char range[RANGE_HEADER_SIZE];
907 struct curl_slist *range_header = NULL;
908 FILE *indexfile;
910 struct active_request_slot *slot;
911 struct slot_results results;
912 /* Don't use the index if the pack isn't there */
914 url = xmalloc(strlen(remote->url) + 64);
915 sprintf(url, "%sobjects/pack/pack-%s.pack", remote->url, hex);
916 slot = get_active_slot();
917 slot->results = &results;
918 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
919 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
920 if (start_active_slot(slot)) {
921 run_active_slot(slot);
922 if (results.curl_result != CURLE_OK) {
923 free(url);
924 return error("Unable to verify pack %s is available",
925 hex);
926 }
927 } else {
928 return error("Unable to start request");
929 }
930 if (has_pack_index(sha1))
932 return 0;
933 if (push_verbosely)
935 fprintf(stderr, "Getting index for pack %s\n", hex);
936 sprintf(url, "%sobjects/pack/pack-%s.idx", remote->url, hex);
938 filename = sha1_pack_index_name(sha1);
940 snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
941 indexfile = fopen(tmpfile, "a");
942 if (!indexfile)
943 return error("Unable to open local file %s for pack index",
944 filename);
945 slot = get_active_slot();
947 slot->results = &results;
948 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
949 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
950 curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
951 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
952 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
953 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
954 slot->local = indexfile;
955 /* If there is data present from a previous transfer attempt,
957 resume where it left off */
958 prev_posn = ftell(indexfile);
959 if (prev_posn>0) {
960 if (push_verbosely)
961 fprintf(stderr,
962 "Resuming fetch of index for pack %s at byte %ld\n",
963 hex, prev_posn);
964 sprintf(range, "Range: bytes=%ld-", prev_posn);
965 range_header = curl_slist_append(range_header, range);
966 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
967 }
968 if (start_active_slot(slot)) {
970 run_active_slot(slot);
971 if (results.curl_result != CURLE_OK) {
972 free(url);
973 fclose(indexfile);
974 return error("Unable to get pack index %s\n%s", url,
975 curl_errorstr);
976 }
977 } else {
978 free(url);
979 fclose(indexfile);
980 return error("Unable to start request");
981 }
982 free(url);
984 fclose(indexfile);
985 return move_temp_to_file(tmpfile, filename);
987}
988static int setup_index(unsigned char *sha1)
990{
991 struct packed_git *new_pack;
992 if (fetch_index(sha1))
994 return -1;
995 new_pack = parse_pack_index(sha1);
997 new_pack->next = remote->packs;
998 remote->packs = new_pack;
999 return 0;
1000}
1001static int fetch_indices(void)
1003{
1004 unsigned char sha1[20];
1005 char *url;
1006 struct buffer buffer;
1007 char *data;
1008 int i = 0;
1009 struct active_request_slot *slot;
1011 struct slot_results results;
1012 data = xcalloc(1, 4096);
1014 buffer.size = 4096;
1015 buffer.posn = 0;
1016 buffer.buffer = data;
1017 if (push_verbosely)
1019 fprintf(stderr, "Getting pack list\n");
1020 url = xmalloc(strlen(remote->url) + 20);
1022 sprintf(url, "%sobjects/info/packs", remote->url);
1023 slot = get_active_slot();
1025 slot->results = &results;
1026 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
1027 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1028 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1029 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1030 if (start_active_slot(slot)) {
1031 run_active_slot(slot);
1032 if (results.curl_result != CURLE_OK) {
1033 free(buffer.buffer);
1034 free(url);
1035 if (results.http_code == 404)
1036 return 0;
1037 else
1038 return error("%s", curl_errorstr);
1039 }
1040 } else {
1041 free(buffer.buffer);
1042 free(url);
1043 return error("Unable to start request");
1044 }
1045 free(url);
1046 data = buffer.buffer;
1048 while (i < buffer.posn) {
1049 switch (data[i]) {
1050 case 'P':
1051 i++;
1052 if (i + 52 < buffer.posn &&
1053 !prefixcmp(data + i, " pack-") &&
1054 !prefixcmp(data + i + 46, ".pack\n")) {
1055 get_sha1_hex(data + i + 6, sha1);
1056 setup_index(sha1);
1057 i += 51;
1058 break;
1059 }
1060 default:
1061 while (data[i] != '\n')
1062 i++;
1063 }
1064 i++;
1065 }
1066 free(buffer.buffer);
1068 return 0;
1069}
1070static inline int needs_quote(int ch)
1072{
1073 if (((ch >= 'A') && (ch <= 'Z'))
1074 || ((ch >= 'a') && (ch <= 'z'))
1075 || ((ch >= '0') && (ch <= '9'))
1076 || (ch == '/')
1077 || (ch == '-')
1078 || (ch == '.'))
1079 return 0;
1080 return 1;
1081}
1082static inline int hex(int v)
1084{
1085 if (v < 10) return '0' + v;
1086 else return 'A' + v - 10;
1087}
1088static char *quote_ref_url(const char *base, const char *ref)
1090{
1091 const char *cp;
1092 char *dp, *qref;
1093 int len, baselen, ch;
1094 baselen = strlen(base);
1096 len = baselen + 1;
1097 for (cp = ref; (ch = *cp) != 0; cp++, len++)
1098 if (needs_quote(ch))
1099 len += 2; /* extra two hex plus replacement % */
1100 qref = xmalloc(len);
1101 memcpy(qref, base, baselen);
1102 for (cp = ref, dp = qref + baselen; (ch = *cp) != 0; cp++) {
1103 if (needs_quote(ch)) {
1104 *dp++ = '%';
1105 *dp++ = hex((ch >> 4) & 0xF);
1106 *dp++ = hex(ch & 0xF);
1107 }
1108 else
1109 *dp++ = ch;
1110 }
1111 *dp = 0;
1112 return qref;
1114}
1115int fetch_ref(char *ref, unsigned char *sha1)
1117{
1118 char *url;
1119 char hex[42];
1120 struct buffer buffer;
1121 char *base = remote->url;
1122 struct active_request_slot *slot;
1123 struct slot_results results;
1124 buffer.size = 41;
1125 buffer.posn = 0;
1126 buffer.buffer = hex;
1127 hex[41] = '\0';
1128 url = quote_ref_url(base, ref);
1130 slot = get_active_slot();
1131 slot->results = &results;
1132 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
1133 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1134 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1135 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1136 if (start_active_slot(slot)) {
1137 run_active_slot(slot);
1138 if (results.curl_result != CURLE_OK)
1139 return error("Couldn't get %s for %s\n%s",
1140 url, ref, curl_errorstr);
1141 } else {
1142 return error("Unable to start request");
1143 }
1144 hex[40] = '\0';
1146 get_sha1_hex(hex, sha1);
1147 return 0;
1148}
1149static void one_remote_object(const char *hex)
1151{
1152 unsigned char sha1[20];
1153 struct object *obj;
1154 if (get_sha1_hex(hex, sha1) != 0)
1156 return;
1157 obj = lookup_object(sha1);
1159 if (!obj)
1160 obj = parse_object(sha1);
1161 /* Ignore remote objects that don't exist locally */
1163 if (!obj)
1164 return;
1165 obj->flags |= REMOTE;
1167 if (!object_list_contains(objects, obj))
1168 object_list_insert(obj, &objects);
1169}
1170static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
1172{
1173 int *lock_flags = (int *)ctx->userData;
1174 if (tag_closed) {
1176 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
1177 if ((*lock_flags & DAV_PROP_LOCKEX) &&
1178 (*lock_flags & DAV_PROP_LOCKWR)) {
1179 *lock_flags |= DAV_LOCK_OK;
1180 }
1181 *lock_flags &= DAV_LOCK_OK;
1182 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
1183 *lock_flags |= DAV_PROP_LOCKWR;
1184 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
1185 *lock_flags |= DAV_PROP_LOCKEX;
1186 }
1187 }
1188}
1189static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
1191{
1192 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
1193 if (tag_closed && ctx->cdata) {
1195 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
1196 lock->owner = xmalloc(strlen(ctx->cdata) + 1);
1197 strcpy(lock->owner, ctx->cdata);
1198 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
1199 if (!prefixcmp(ctx->cdata, "Second-"))
1200 lock->timeout =
1201 strtol(ctx->cdata + 7, NULL, 10);
1202 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
1203 if (!prefixcmp(ctx->cdata, "opaquelocktoken:")) {
1204 lock->token = xmalloc(strlen(ctx->cdata) - 15);
1205 strcpy(lock->token, ctx->cdata + 16);
1206 }
1207 }
1208 }
1209}
1210static void one_remote_ref(char *refname);
1212static void
1214xml_start_tag(void *userData, const char *name, const char **atts)
1215{
1216 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1217 const char *c = strchr(name, ':');
1218 int new_len;
1219 if (c == NULL)
1221 c = name;
1222 else
1223 c++;
1224 new_len = strlen(ctx->name) + strlen(c) + 2;
1226 if (new_len > ctx->len) {
1228 ctx->name = xrealloc(ctx->name, new_len);
1229 ctx->len = new_len;
1230 }
1231 strcat(ctx->name, ".");
1232 strcat(ctx->name, c);
1233 free(ctx->cdata);
1235 ctx->cdata = NULL;
1236 ctx->userFunc(ctx, 0);
1238}
1239static void
1241xml_end_tag(void *userData, const char *name)
1242{
1243 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1244 const char *c = strchr(name, ':');
1245 char *ep;
1246 ctx->userFunc(ctx, 1);
1248 if (c == NULL)
1250 c = name;
1251 else
1252 c++;
1253 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
1255 *ep = 0;
1256}
1257static void
1259xml_cdata(void *userData, const XML_Char *s, int len)
1260{
1261 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1262 free(ctx->cdata);
1263 ctx->cdata = xmalloc(len + 1);
1264 /* NB: 's' is not null-terminated, can not use strlcpy here */
1265 memcpy(ctx->cdata, s, len);
1266 ctx->cdata[len] = '\0';
1267}
1268static struct remote_lock *lock_remote(const char *path, long timeout)
1270{
1271 struct active_request_slot *slot;
1272 struct slot_results results;
1273 struct buffer out_buffer;
1274 struct buffer in_buffer;
1275 char *out_data;
1276 char *in_data;
1277 char *url;
1278 char *ep;
1279 char timeout_header[25];
1280 struct remote_lock *lock = NULL;
1281 XML_Parser parser = XML_ParserCreate(NULL);
1282 enum XML_Status result;
1283 struct curl_slist *dav_headers = NULL;
1284 struct xml_ctx ctx;
1285 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1287 sprintf(url, "%s%s", remote->url, path);
1288 /* Make sure leading directories exist for the remote ref */
1290 ep = strchr(url + strlen(remote->url) + 1, '/');
1291 while (ep) {
1292 *ep = 0;
1293 slot = get_active_slot();
1294 slot->results = &results;
1295 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1296 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1297 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
1298 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1299 if (start_active_slot(slot)) {
1300 run_active_slot(slot);
1301 if (results.curl_result != CURLE_OK &&
1302 results.http_code != 405) {
1303 fprintf(stderr,
1304 "Unable to create branch path %s\n",
1305 url);
1306 free(url);
1307 return NULL;
1308 }
1309 } else {
1310 fprintf(stderr, "Unable to start MKCOL request\n");
1311 free(url);
1312 return NULL;
1313 }
1314 *ep = '/';
1315 ep = strchr(ep + 1, '/');
1316 }
1317 out_buffer.size = strlen(LOCK_REQUEST) + strlen(git_default_email) - 2;
1319 out_data = xmalloc(out_buffer.size + 1);
1320 snprintf(out_data, out_buffer.size + 1, LOCK_REQUEST, git_default_email);
1321 out_buffer.posn = 0;
1322 out_buffer.buffer = out_data;
1323 in_buffer.size = 4096;
1325 in_data = xmalloc(in_buffer.size);
1326 in_buffer.posn = 0;
1327 in_buffer.buffer = in_data;
1328 sprintf(timeout_header, "Timeout: Second-%ld", timeout);
1330 dav_headers = curl_slist_append(dav_headers, timeout_header);
1331 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1332 slot = get_active_slot();
1334 slot->results = &results;
1335 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1336 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1337 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1338 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1339 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1340 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1341 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1342 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
1343 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1344 lock = xcalloc(1, sizeof(*lock));
1346 lock->timeout = -1;
1347 if (start_active_slot(slot)) {
1349 run_active_slot(slot);
1350 if (results.curl_result == CURLE_OK) {
1351 ctx.name = xcalloc(10, 1);
1352 ctx.len = 0;
1353 ctx.cdata = NULL;
1354 ctx.userFunc = handle_new_lock_ctx;
1355 ctx.userData = lock;
1356 XML_SetUserData(parser, &ctx);
1357 XML_SetElementHandler(parser, xml_start_tag,
1358 xml_end_tag);
1359 XML_SetCharacterDataHandler(parser, xml_cdata);
1360 result = XML_Parse(parser, in_buffer.buffer,
1361 in_buffer.posn, 1);
1362 free(ctx.name);
1363 if (result != XML_STATUS_OK) {
1364 fprintf(stderr, "XML error: %s\n",
1365 XML_ErrorString(
1366 XML_GetErrorCode(parser)));
1367 lock->timeout = -1;
1368 }
1369 }
1370 } else {
1371 fprintf(stderr, "Unable to start LOCK request\n");
1372 }
1373 curl_slist_free_all(dav_headers);
1375 free(out_data);
1376 free(in_data);
1377 if (lock->token == NULL || lock->timeout <= 0) {
1379 if (lock->token != NULL)
1380 free(lock->token);
1381 if (lock->owner != NULL)
1382 free(lock->owner);
1383 free(url);
1384 free(lock);
1385 lock = NULL;
1386 } else {
1387 lock->url = url;
1388 lock->start_time = time(NULL);
1389 lock->next = remote->locks;
1390 remote->locks = lock;
1391 }
1392 return lock;
1394}
1395static int unlock_remote(struct remote_lock *lock)
1397{
1398 struct active_request_slot *slot;
1399 struct slot_results results;
1400 struct remote_lock *prev = remote->locks;
1401 char *lock_token_header;
1402 struct curl_slist *dav_headers = NULL;
1403 int rc = 0;
1404 lock_token_header = xmalloc(strlen(lock->token) + 31);
1406 sprintf(lock_token_header, "Lock-Token: <opaquelocktoken:%s>",
1407 lock->token);
1408 dav_headers = curl_slist_append(dav_headers, lock_token_header);
1409 slot = get_active_slot();
1411 slot->results = &results;
1412 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1413 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1414 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
1415 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1416 if (start_active_slot(slot)) {
1418 run_active_slot(slot);
1419 if (results.curl_result == CURLE_OK)
1420 rc = 1;
1421 else
1422 fprintf(stderr, "UNLOCK HTTP error %ld\n",
1423 results.http_code);
1424 } else {
1425 fprintf(stderr, "Unable to start UNLOCK request\n");
1426 }
1427 curl_slist_free_all(dav_headers);
1429 free(lock_token_header);
1430 if (remote->locks == lock) {
1432 remote->locks = lock->next;
1433 } else {
1434 while (prev && prev->next != lock)
1435 prev = prev->next;
1436 if (prev)
1437 prev->next = prev->next->next;
1438 }
1439 if (lock->owner != NULL)
1441 free(lock->owner);
1442 free(lock->url);
1443 free(lock->token);
1444 free(lock);
1445 return rc;
1447}
1448static void remote_ls(const char *path, int flags,
1450 void (*userFunc)(struct remote_ls_ctx *ls),
1451 void *userData);
1452static void process_ls_object(struct remote_ls_ctx *ls)
1454{
1455 unsigned int *parent = (unsigned int *)ls->userData;
1456 char *path = ls->dentry_name;
1457 char *obj_hex;
1458 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1460 remote_dir_exists[*parent] = 1;
1461 return;
1462 }
1463 if (strlen(path) != 49)
1465 return;
1466 path += 8;
1467 obj_hex = xmalloc(strlen(path));
1468 /* NB: path is not null-terminated, can not use strlcpy here */
1469 memcpy(obj_hex, path, 2);
1470 strcpy(obj_hex + 2, path + 3);
1471 one_remote_object(obj_hex);
1472 free(obj_hex);
1473}
1474static void process_ls_ref(struct remote_ls_ctx *ls)
1476{
1477 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1478 fprintf(stderr, " %s\n", ls->dentry_name);
1479 return;
1480 }
1481 if (!(ls->dentry_flags & IS_DIR))
1483 one_remote_ref(ls->dentry_name);
1484}
1485static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1487{
1488 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
1489 if (tag_closed) {
1491 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1492 if (ls->dentry_flags & IS_DIR) {
1493 if (ls->flags & PROCESS_DIRS) {
1494 ls->userFunc(ls);
1495 }
1496 if (strcmp(ls->dentry_name, ls->path) &&
1497 ls->flags & RECURSIVE) {
1498 remote_ls(ls->dentry_name,
1499 ls->flags,
1500 ls->userFunc,
1501 ls->userData);
1502 }
1503 } else if (ls->flags & PROCESS_FILES) {
1504 ls->userFunc(ls);
1505 }
1506 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1507 ls->dentry_name = xmalloc(strlen(ctx->cdata) -
1508 remote->path_len + 1);
1509 strcpy(ls->dentry_name, ctx->cdata + remote->path_len);
1510 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1511 ls->dentry_flags |= IS_DIR;
1512 }
1513 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1514 free(ls->dentry_name);
1515 ls->dentry_name = NULL;
1516 ls->dentry_flags = 0;
1517 }
1518}
1519static void remote_ls(const char *path, int flags,
1521 void (*userFunc)(struct remote_ls_ctx *ls),
1522 void *userData)
1523{
1524 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1525 struct active_request_slot *slot;
1526 struct slot_results results;
1527 struct buffer in_buffer;
1528 struct buffer out_buffer;
1529 char *in_data;
1530 char *out_data;
1531 XML_Parser parser = XML_ParserCreate(NULL);
1532 enum XML_Status result;
1533 struct curl_slist *dav_headers = NULL;
1534 struct xml_ctx ctx;
1535 struct remote_ls_ctx ls;
1536 ls.flags = flags;
1538 ls.path = xstrdup(path);
1539 ls.dentry_name = NULL;
1540 ls.dentry_flags = 0;
1541 ls.userData = userData;
1542 ls.userFunc = userFunc;
1543 sprintf(url, "%s%s", remote->url, path);
1545 out_buffer.size = strlen(PROPFIND_ALL_REQUEST);
1547 out_data = xmalloc(out_buffer.size + 1);
1548 snprintf(out_data, out_buffer.size + 1, PROPFIND_ALL_REQUEST);
1549 out_buffer.posn = 0;
1550 out_buffer.buffer = out_data;
1551 in_buffer.size = 4096;
1553 in_data = xmalloc(in_buffer.size);
1554 in_buffer.posn = 0;
1555 in_buffer.buffer = in_data;
1556 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1558 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1559 slot = get_active_slot();
1561 slot->results = &results;
1562 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1563 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1564 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1565 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1566 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1567 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1568 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1569 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1570 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1571 if (start_active_slot(slot)) {
1573 run_active_slot(slot);
1574 if (results.curl_result == CURLE_OK) {
1575 ctx.name = xcalloc(10, 1);
1576 ctx.len = 0;
1577 ctx.cdata = NULL;
1578 ctx.userFunc = handle_remote_ls_ctx;
1579 ctx.userData = &ls;
1580 XML_SetUserData(parser, &ctx);
1581 XML_SetElementHandler(parser, xml_start_tag,
1582 xml_end_tag);
1583 XML_SetCharacterDataHandler(parser, xml_cdata);
1584 result = XML_Parse(parser, in_buffer.buffer,
1585 in_buffer.posn, 1);
1586 free(ctx.name);
1587 if (result != XML_STATUS_OK) {
1589 fprintf(stderr, "XML error: %s\n",
1590 XML_ErrorString(
1591 XML_GetErrorCode(parser)));
1592 }
1593 }
1594 } else {
1595 fprintf(stderr, "Unable to start PROPFIND request\n");
1596 }
1597 free(ls.path);
1599 free(url);
1600 free(out_data);
1601 free(in_buffer.buffer);
1602 curl_slist_free_all(dav_headers);
1603}
1604static void get_remote_object_list(unsigned char parent)
1606{
1607 char path[] = "objects/XX/";
1608 static const char hex[] = "0123456789abcdef";
1609 unsigned int val = parent;
1610 path[8] = hex[val >> 4];
1612 path[9] = hex[val & 0xf];
1613 remote_dir_exists[val] = 0;
1614 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1615 process_ls_object, &val);
1616}
1617static int locking_available(void)
1619{
1620 struct active_request_slot *slot;
1621 struct slot_results results;
1622 struct buffer in_buffer;
1623 struct buffer out_buffer;
1624 char *in_data;
1625 char *out_data;
1626 XML_Parser parser = XML_ParserCreate(NULL);
1627 enum XML_Status result;
1628 struct curl_slist *dav_headers = NULL;
1629 struct xml_ctx ctx;
1630 int lock_flags = 0;
1631 out_buffer.size =
1633 strlen(PROPFIND_SUPPORTEDLOCK_REQUEST) +
1634 strlen(remote->url) - 2;
1635 out_data = xmalloc(out_buffer.size + 1);
1636 snprintf(out_data, out_buffer.size + 1,
1637 PROPFIND_SUPPORTEDLOCK_REQUEST, remote->url);
1638 out_buffer.posn = 0;
1639 out_buffer.buffer = out_data;
1640 in_buffer.size = 4096;
1642 in_data = xmalloc(in_buffer.size);
1643 in_buffer.posn = 0;
1644 in_buffer.buffer = in_data;
1645 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1647 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1648 slot = get_active_slot();
1650 slot->results = &results;
1651 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1652 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1653 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1654 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1655 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1656 curl_easy_setopt(slot->curl, CURLOPT_URL, remote->url);
1657 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1658 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1659 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1660 if (start_active_slot(slot)) {
1662 run_active_slot(slot);
1663 if (results.curl_result == CURLE_OK) {
1664 ctx.name = xcalloc(10, 1);
1665 ctx.len = 0;
1666 ctx.cdata = NULL;
1667 ctx.userFunc = handle_lockprop_ctx;
1668 ctx.userData = &lock_flags;
1669 XML_SetUserData(parser, &ctx);
1670 XML_SetElementHandler(parser, xml_start_tag,
1671 xml_end_tag);
1672 result = XML_Parse(parser, in_buffer.buffer,
1673 in_buffer.posn, 1);
1674 free(ctx.name);
1675 if (result != XML_STATUS_OK) {
1677 fprintf(stderr, "XML error: %s\n",
1678 XML_ErrorString(
1679 XML_GetErrorCode(parser)));
1680 lock_flags = 0;
1681 }
1682 }
1683 } else {
1684 fprintf(stderr, "Unable to start PROPFIND request\n");
1685 }
1686 free(out_data);
1688 free(in_buffer.buffer);
1689 curl_slist_free_all(dav_headers);
1690 return lock_flags;
1692}
1693static struct object_list **add_one_object(struct object *obj, struct object_list **p)
1695{
1696 struct object_list *entry = xmalloc(sizeof(struct object_list));
1697 entry->item = obj;
1698 entry->next = *p;
1699 *p = entry;
1700 return &entry->next;
1701}
1702static struct object_list **process_blob(struct blob *blob,
1704 struct object_list **p,
1705 struct name_path *path,
1706 const char *name)
1707{
1708 struct object *obj = &blob->object;
1709 obj->flags |= LOCAL;
1711 if (obj->flags & (UNINTERESTING | SEEN))
1713 return p;
1714 obj->flags |= SEEN;
1716 return add_one_object(obj, p);
1717}
1718static struct object_list **process_tree(struct tree *tree,
1720 struct object_list **p,
1721 struct name_path *path,
1722 const char *name)
1723{
1724 struct object *obj = &tree->object;
1725 struct tree_desc desc;
1726 struct name_entry entry;
1727 struct name_path me;
1728 obj->flags |= LOCAL;
1730 if (obj->flags & (UNINTERESTING | SEEN))
1732 return p;
1733 if (parse_tree(tree) < 0)
1734 die("bad tree object %s", sha1_to_hex(obj->sha1));
1735 obj->flags |= SEEN;
1737 name = xstrdup(name);
1738 p = add_one_object(obj, p);
1739 me.up = path;
1740 me.elem = name;
1741 me.elem_len = strlen(name);
1742 init_tree_desc(&desc, tree->buffer, tree->size);
1744 while (tree_entry(&desc, &entry)) {
1746 if (S_ISDIR(entry.mode))
1747 p = process_tree(lookup_tree(entry.sha1), p, &me, name);
1748 else
1749 p = process_blob(lookup_blob(entry.sha1), p, &me, name);
1750 }
1751 free(tree->buffer);
1752 tree->buffer = NULL;
1753 return p;
1754}
1755static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1757{
1758 int i;
1759 struct commit *commit;
1760 struct object_list **p = &objects;
1761 int count = 0;
1762 while ((commit = get_revision(revs)) != NULL) {
1764 p = process_tree(commit->tree, p, NULL, "");
1765 commit->object.flags |= LOCAL;
1766 if (!(commit->object.flags & UNINTERESTING))
1767 count += add_send_request(&commit->object, lock);
1768 }
1769 for (i = 0; i < revs->pending.nr; i++) {
1771 struct object_array_entry *entry = revs->pending.objects + i;
1772 struct object *obj = entry->item;
1773 const char *name = entry->name;
1774 if (obj->flags & (UNINTERESTING | SEEN))
1776 continue;
1777 if (obj->type == OBJ_TAG) {
1778 obj->flags |= SEEN;
1779 p = add_one_object(obj, p);
1780 continue;
1781 }
1782 if (obj->type == OBJ_TREE) {
1783 p = process_tree((struct tree *)obj, p, NULL, name);
1784 continue;
1785 }
1786 if (obj->type == OBJ_BLOB) {
1787 p = process_blob((struct blob *)obj, p, NULL, name);
1788 continue;
1789 }
1790 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1791 }
1792 while (objects) {
1794 if (!(objects->item->flags & UNINTERESTING))
1795 count += add_send_request(objects->item, lock);
1796 objects = objects->next;
1797 }
1798 return count;
1800}
1801static int update_remote(unsigned char *sha1, struct remote_lock *lock)
1803{
1804 struct active_request_slot *slot;
1805 struct slot_results results;
1806 char *out_data;
1807 char *if_header;
1808 struct buffer out_buffer;
1809 struct curl_slist *dav_headers = NULL;
1810 int i;
1811 if_header = xmalloc(strlen(lock->token) + 25);
1813 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
1814 dav_headers = curl_slist_append(dav_headers, if_header);
1815 out_buffer.size = 41;
1817 out_data = xmalloc(out_buffer.size + 1);
1818 i = snprintf(out_data, out_buffer.size + 1, "%s\n", sha1_to_hex(sha1));
1819 if (i != out_buffer.size) {
1820 fprintf(stderr, "Unable to initialize PUT request body\n");
1821 return 0;
1822 }
1823 out_buffer.posn = 0;
1824 out_buffer.buffer = out_data;
1825 slot = get_active_slot();
1827 slot->results = &results;
1828 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1829 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1830 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1831 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1832 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1833 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1834 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1835 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
1836 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
1837 if (start_active_slot(slot)) {
1839 run_active_slot(slot);
1840 free(out_data);
1841 free(if_header);
1842 if (results.curl_result != CURLE_OK) {
1843 fprintf(stderr,
1844 "PUT error: curl result=%d, HTTP code=%ld\n",
1845 results.curl_result, results.http_code);
1846 /* We should attempt recovery? */
1847 return 0;
1848 }
1849 } else {
1850 free(out_data);
1851 free(if_header);
1852 fprintf(stderr, "Unable to start PUT request\n");
1853 return 0;
1854 }
1855 return 1;
1857}
1858static struct ref *local_refs, **local_tail;
1860static struct ref *remote_refs, **remote_tail;
1861static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
1863{
1864 struct ref *ref;
1865 int len = strlen(refname) + 1;
1866 ref = xcalloc(1, sizeof(*ref) + len);
1867 hashcpy(ref->new_sha1, sha1);
1868 memcpy(ref->name, refname, len);
1869 *local_tail = ref;
1870 local_tail = &ref->next;
1871 return 0;
1872}
1873static void one_remote_ref(char *refname)
1875{
1876 struct ref *ref;
1877 unsigned char remote_sha1[20];
1878 struct object *obj;
1879 int len = strlen(refname) + 1;
1880 if (fetch_ref(refname, remote_sha1) != 0) {
1882 fprintf(stderr,
1883 "Unable to fetch ref %s from %s\n",
1884 refname, remote->url);
1885 return;
1886 }
1887 /*
1889 * Fetch a copy of the object if it doesn't exist locally - it
1890 * may be required for updating server info later.
1891 */
1892 if (remote->can_update_info_refs && !has_sha1_file(remote_sha1)) {
1893 obj = lookup_unknown_object(remote_sha1);
1894 if (obj) {
1895 fprintf(stderr, " fetch %s for %s\n",
1896 sha1_to_hex(remote_sha1), refname);
1897 add_fetch_request(obj);
1898 }
1899 }
1900 ref = xcalloc(1, sizeof(*ref) + len);
1902 hashcpy(ref->old_sha1, remote_sha1);
1903 memcpy(ref->name, refname, len);
1904 *remote_tail = ref;
1905 remote_tail = &ref->next;
1906}
1907static void get_local_heads(void)
1909{
1910 local_tail = &local_refs;
1911 for_each_ref(one_local_ref, NULL);
1912}
1913static void get_dav_remote_heads(void)
1915{
1916 remote_tail = &remote_refs;
1917 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
1918}
1919static int is_zero_sha1(const unsigned char *sha1)
1921{
1922 int i;
1923 for (i = 0; i < 20; i++) {
1925 if (*sha1++)
1926 return 0;
1927 }
1928 return 1;
1929}
1930static void unmark_and_free(struct commit_list *list, unsigned int mark)
1932{
1933 while (list) {
1934 struct commit_list *temp = list;
1935 temp->item->object.flags &= ~mark;
1936 list = temp->next;
1937 free(temp);
1938 }
1939}
1940static int ref_newer(const unsigned char *new_sha1,
1942 const unsigned char *old_sha1)
1943{
1944 struct object *o;
1945 struct commit *old, *new;
1946 struct commit_list *list, *used;
1947 int found = 0;
1948 /* Both new and old must be commit-ish and new is descendant of
1950 * old. Otherwise we require --force.
1951 */
1952 o = deref_tag(parse_object(old_sha1), NULL, 0);
1953 if (!o || o->type != OBJ_COMMIT)
1954 return 0;
1955 old = (struct commit *) o;
1956 o = deref_tag(parse_object(new_sha1), NULL, 0);
1958 if (!o || o->type != OBJ_COMMIT)
1959 return 0;
1960 new = (struct commit *) o;
1961 if (parse_commit(new) < 0)
1963 return 0;
1964 used = list = NULL;
1966 commit_list_insert(new, &list);
1967 while (list) {
1968 new = pop_most_recent_commit(&list, TMP_MARK);
1969 commit_list_insert(new, &used);
1970 if (new == old) {
1971 found = 1;
1972 break;
1973 }
1974 }
1975 unmark_and_free(list, TMP_MARK);
1976 unmark_and_free(used, TMP_MARK);
1977 return found;
1978}
1979static void mark_edge_parents_uninteresting(struct commit *commit)
1981{
1982 struct commit_list *parents;
1983 for (parents = commit->parents; parents; parents = parents->next) {
1985 struct commit *parent = parents->item;
1986 if (!(parent->object.flags & UNINTERESTING))
1987 continue;
1988 mark_tree_uninteresting(parent->tree);
1989 }
1990}
1991static void mark_edges_uninteresting(struct commit_list *list)
1993{
1994 for ( ; list; list = list->next) {
1995 struct commit *commit = list->item;
1996 if (commit->object.flags & UNINTERESTING) {
1998 mark_tree_uninteresting(commit->tree);
1999 continue;
2000 }
2001 mark_edge_parents_uninteresting(commit);
2002 }
2003}
2004static void add_remote_info_ref(struct remote_ls_ctx *ls)
2006{
2007 struct buffer *buf = (struct buffer *)ls->userData;
2008 unsigned char remote_sha1[20];
2009 struct object *o;
2010 int len;
2011 char *ref_info;
2012 if (fetch_ref(ls->dentry_name, remote_sha1) != 0) {
2014 fprintf(stderr,
2015 "Unable to fetch ref %s from %s\n",
2016 ls->dentry_name, remote->url);
2017 aborted = 1;
2018 return;
2019 }
2020 o = parse_object(remote_sha1);
2022 if (!o) {
2023 fprintf(stderr,
2024 "Unable to parse object %s for remote ref %s\n",
2025 sha1_to_hex(remote_sha1), ls->dentry_name);
2026 aborted = 1;
2027 return;
2028 }
2029 len = strlen(ls->dentry_name) + 42;
2031 ref_info = xcalloc(len + 1, 1);
2032 sprintf(ref_info, "%s %s\n",
2033 sha1_to_hex(remote_sha1), ls->dentry_name);
2034 fwrite_buffer(ref_info, 1, len, buf);
2035 free(ref_info);
2036 if (o->type == OBJ_TAG) {
2038 o = deref_tag(o, ls->dentry_name, 0);
2039 if (o) {
2040 len = strlen(ls->dentry_name) + 45;
2041 ref_info = xcalloc(len + 1, 1);
2042 sprintf(ref_info, "%s %s^{}\n",
2043 sha1_to_hex(o->sha1), ls->dentry_name);
2044 fwrite_buffer(ref_info, 1, len, buf);
2045 free(ref_info);
2046 }
2047 }
2048}
2049static void update_remote_info_refs(struct remote_lock *lock)
2051{
2052 struct buffer buffer;
2053 struct active_request_slot *slot;
2054 struct slot_results results;
2055 char *if_header;
2056 struct curl_slist *dav_headers = NULL;
2057 buffer.buffer = xcalloc(1, 4096);
2059 buffer.size = 4096;
2060 buffer.posn = 0;
2061 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
2062 add_remote_info_ref, &buffer);
2063 if (!aborted) {
2064 if_header = xmalloc(strlen(lock->token) + 25);
2065 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
2066 dav_headers = curl_slist_append(dav_headers, if_header);
2067 slot = get_active_slot();
2069 slot->results = &results;
2070 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
2071 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.posn);
2072 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
2073 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
2074 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
2075 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
2076 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
2077 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
2078 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
2079 buffer.posn = 0;
2081 if (start_active_slot(slot)) {
2083 run_active_slot(slot);
2084 if (results.curl_result != CURLE_OK) {
2085 fprintf(stderr,
2086 "PUT error: curl result=%d, HTTP code=%ld\n",
2087 results.curl_result, results.http_code);
2088 }
2089 }
2090 free(if_header);
2091 }
2092 free(buffer.buffer);
2093}
2094static int remote_exists(const char *path)
2096{
2097 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
2098 struct active_request_slot *slot;
2099 struct slot_results results;
2100 sprintf(url, "%s%s", remote->url, path);
2102 slot = get_active_slot();
2104 slot->results = &results;
2105 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2106 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
2107 if (start_active_slot(slot)) {
2109 run_active_slot(slot);
2110 if (results.http_code == 404)
2111 return 0;
2112 else if (results.curl_result == CURLE_OK)
2113 return 1;
2114 else
2115 fprintf(stderr, "HEAD HTTP error %ld\n", results.http_code);
2116 } else {
2117 fprintf(stderr, "Unable to start HEAD request\n");
2118 }
2119 return -1;
2121}
2122static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
2124{
2125 char *url;
2126 struct buffer buffer;
2127 struct active_request_slot *slot;
2128 struct slot_results results;
2129 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
2131 sprintf(url, "%s%s", remote->url, path);
2132 buffer.size = 4096;
2134 buffer.posn = 0;
2135 buffer.buffer = xmalloc(buffer.size);
2136 slot = get_active_slot();
2138 slot->results = &results;
2139 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
2140 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
2141 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
2142 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2143 if (start_active_slot(slot)) {
2144 run_active_slot(slot);
2145 if (results.curl_result != CURLE_OK) {
2146 die("Couldn't get %s for remote symref\n%s",
2147 url, curl_errorstr);
2148 }
2149 } else {
2150 die("Unable to start remote symref request");
2151 }
2152 free(url);
2153 if (*symref != NULL)
2155 free(*symref);
2156 *symref = NULL;
2157 hashclr(sha1);
2158 if (buffer.posn == 0)
2160 return;
2161 /* If it's a symref, set the refname; otherwise try for a sha1 */
2163 if (!prefixcmp((char *)buffer.buffer, "ref: ")) {
2164 *symref = xmalloc(buffer.posn - 5);
2165 memcpy(*symref, (char *)buffer.buffer + 5, buffer.posn - 6);
2166 (*symref)[buffer.posn - 6] = '\0';
2167 } else {
2168 get_sha1_hex(buffer.buffer, sha1);
2169 }
2170 free(buffer.buffer);
2172}
2173static int verify_merge_base(unsigned char *head_sha1, unsigned char *branch_sha1)
2175{
2176 struct commit *head = lookup_commit(head_sha1);
2177 struct commit *branch = lookup_commit(branch_sha1);
2178 struct commit_list *merge_bases = get_merge_bases(head, branch, 1);
2179 return (merge_bases && !merge_bases->next && merge_bases->item == branch);
2181}
2182static int delete_remote_branch(char *pattern, int force)
2184{
2185 struct ref *refs = remote_refs;
2186 struct ref *remote_ref = NULL;
2187 unsigned char head_sha1[20];
2188 char *symref = NULL;
2189 int match;
2190 int patlen = strlen(pattern);
2191 int i;
2192 struct active_request_slot *slot;
2193 struct slot_results results;
2194 char *url;
2195 /* Find the remote branch(es) matching the specified branch name */
2197 for (match = 0; refs; refs = refs->next) {
2198 char *name = refs->name;
2199 int namelen = strlen(name);
2200 if (namelen < patlen ||
2201 memcmp(name + namelen - patlen, pattern, patlen))
2202 continue;
2203 if (namelen != patlen && name[namelen - patlen - 1] != '/')
2204 continue;
2205 match++;
2206 remote_ref = refs;
2207 }
2208 if (match == 0)
2209 return error("No remote branch matches %s", pattern);
2210 if (match != 1)
2211 return error("More than one remote branch matches %s",
2212 pattern);
2213 /*
2215 * Remote HEAD must be a symref (not exactly foolproof; a remote
2216 * symlink to a symref will look like a symref)
2217 */
2218 fetch_symref("HEAD", &symref, head_sha1);
2219 if (!symref)
2220 return error("Remote HEAD is not a symref");
2221 /* Remote branch must not be the remote HEAD */
2223 for (i=0; symref && i<MAXDEPTH; i++) {
2224 if (!strcmp(remote_ref->name, symref))
2225 return error("Remote branch %s is the current HEAD",
2226 remote_ref->name);
2227 fetch_symref(symref, &symref, head_sha1);
2228 }
2229 /* Run extra sanity checks if delete is not forced */
2231 if (!force) {
2232 /* Remote HEAD must resolve to a known object */
2233 if (symref)
2234 return error("Remote HEAD symrefs too deep");
2235 if (is_zero_sha1(head_sha1))
2236 return error("Unable to resolve remote HEAD");
2237 if (!has_sha1_file(head_sha1))
2238 return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
2239 /* Remote branch must resolve to a known object */
2241 if (is_zero_sha1(remote_ref->old_sha1))
2242 return error("Unable to resolve remote branch %s",
2243 remote_ref->name);
2244 if (!has_sha1_file(remote_ref->old_sha1))
2245 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));
2246 /* Remote branch must be an ancestor of remote HEAD */
2248 if (!verify_merge_base(head_sha1, remote_ref->old_sha1)) {
2249 return error("The branch '%s' is not a strict subset of your current HEAD.\nIf you are sure you want to delete it, run:\n\t'git http-push -D %s %s'", remote_ref->name, remote->url, pattern);
2250 }
2251 }
2252 /* Send delete request */
2254 fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
2255 url = xmalloc(strlen(remote->url) + strlen(remote_ref->name) + 1);
2256 sprintf(url, "%s%s", remote->url, remote_ref->name);
2257 slot = get_active_slot();
2258 slot->results = &results;
2259 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
2260 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
2261 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2262 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_DELETE);
2263 if (start_active_slot(slot)) {
2264 run_active_slot(slot);
2265 free(url);
2266 if (results.curl_result != CURLE_OK)
2267 return error("DELETE request failed (%d/%ld)\n",
2268 results.curl_result, results.http_code);
2269 } else {
2270 free(url);
2271 return error("Unable to start DELETE request");
2272 }
2273 return 0;
2275}
2276int main(int argc, char **argv)
2278{
2279 struct transfer_request *request;
2280 struct transfer_request *next_request;
2281 int nr_refspec = 0;
2282 char **refspec = NULL;
2283 struct remote_lock *ref_lock = NULL;
2284 struct remote_lock *info_ref_lock = NULL;
2285 struct rev_info revs;
2286 int delete_branch = 0;
2287 int force_delete = 0;
2288 int objects_to_send;
2289 int rc = 0;
2290 int i;
2291 int new_refs;
2292 struct ref *ref;
2293 setup_git_directory();
2295 remote = xcalloc(sizeof(*remote), 1);
2297 argv++;
2299 for (i = 1; i < argc; i++, argv++) {
2300 char *arg = *argv;
2301 if (*arg == '-') {
2303 if (!strcmp(arg, "--all")) {
2304 push_all = 1;
2305 continue;
2306 }
2307 if (!strcmp(arg, "--force")) {
2308 force_all = 1;
2309 continue;
2310 }
2311 if (!strcmp(arg, "--verbose")) {
2312 push_verbosely = 1;
2313 continue;
2314 }
2315 if (!strcmp(arg, "-d")) {
2316 delete_branch = 1;
2317 continue;
2318 }
2319 if (!strcmp(arg, "-D")) {
2320 delete_branch = 1;
2321 force_delete = 1;
2322 continue;
2323 }
2324 }
2325 if (!remote->url) {
2326 char *path = strstr(arg, "//");
2327 remote->url = arg;
2328 if (path) {
2329 path = strchr(path+2, '/');
2330 if (path)
2331 remote->path_len = strlen(path);
2332 }
2333 continue;
2334 }
2335 refspec = argv;
2336 nr_refspec = argc - i;
2337 break;
2338 }
2339 if (!remote->url)
2341 usage(http_push_usage);
2342 if (delete_branch && nr_refspec != 1)
2344 die("You must specify only one branch name when deleting a remote branch");
2345 memset(remote_dir_exists, -1, 256);
2347 http_init();
2349 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
2351 default_headers = curl_slist_append(default_headers, "Range:");
2352 default_headers = curl_slist_append(default_headers, "Destination:");
2353 default_headers = curl_slist_append(default_headers, "If:");
2354 default_headers = curl_slist_append(default_headers,
2355 "Pragma: no-cache");
2356 /* Verify DAV compliance/lock support */
2358 if (!locking_available()) {
2359 fprintf(stderr, "Error: no DAV locking support on remote repo %s\n", remote->url);
2360 rc = 1;
2361 goto cleanup;
2362 }
2363 /* Check whether the remote has server info files */
2365 remote->can_update_info_refs = 0;
2366 remote->has_info_refs = remote_exists("info/refs");
2367 remote->has_info_packs = remote_exists("objects/info/packs");
2368 if (remote->has_info_refs) {
2369 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
2370 if (info_ref_lock)
2371 remote->can_update_info_refs = 1;
2372 }
2373 if (remote->has_info_packs)
2374 fetch_indices();
2375 /* Get a list of all local and remote heads to validate refspecs */
2377 get_local_heads();
2378 fprintf(stderr, "Fetching remote heads...\n");
2379 get_dav_remote_heads();
2380 /* Remove a remote branch if -d or -D was specified */
2382 if (delete_branch) {
2383 if (delete_remote_branch(refspec[0], force_delete) == -1)
2384 fprintf(stderr, "Unable to delete remote branch %s\n",
2385 refspec[0]);
2386 goto cleanup;
2387 }
2388 /* match them up */
2390 if (!remote_tail)
2391 remote_tail = &remote_refs;
2392 if (match_refs(local_refs, remote_refs, &remote_tail,
2393 nr_refspec, refspec, push_all))
2394 return -1;
2395 if (!remote_refs) {
2396 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
2397 return 0;
2398 }
2399 new_refs = 0;
2401 for (ref = remote_refs; ref; ref = ref->next) {
2402 char old_hex[60], *new_hex;
2403 const char *commit_argv[4];
2404 int commit_argc;
2405 char *new_sha1_hex, *old_sha1_hex;
2406 if (!ref->peer_ref)
2408 continue;
2409 if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
2410 if (push_verbosely || 1)
2411 fprintf(stderr, "'%s': up-to-date\n", ref->name);
2412 continue;
2413 }
2414 if (!force_all &&
2416 !is_zero_sha1(ref->old_sha1) &&
2417 !ref->force) {
2418 if (!has_sha1_file(ref->old_sha1) ||
2419 !ref_newer(ref->peer_ref->new_sha1,
2420 ref->old_sha1)) {
2421 /* We do not have the remote ref, or
2422 * we know that the remote ref is not
2423 * an ancestor of what we are trying to
2424 * push. Either way this can be losing
2425 * commits at the remote end and likely
2426 * we were not up to date to begin with.
2427 */
2428 error("remote '%s' is not a strict "
2429 "subset of local ref '%s'. "
2430 "maybe you are not up-to-date and "
2431 "need to pull first?",
2432 ref->name,
2433 ref->peer_ref->name);
2434 rc = -2;
2435 continue;
2436 }
2437 }
2438 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
2439 if (is_zero_sha1(ref->new_sha1)) {
2440 error("cannot happen anymore");
2441 rc = -3;
2442 continue;
2443 }
2444 new_refs++;
2445 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
2446 new_hex = sha1_to_hex(ref->new_sha1);
2447 fprintf(stderr, "updating '%s'", ref->name);
2449 if (strcmp(ref->name, ref->peer_ref->name))
2450 fprintf(stderr, " using '%s'", ref->peer_ref->name);
2451 fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
2452 /* Lock remote branch ref */
2455 ref_lock = lock_remote(ref->name, LOCK_TIME);
2456 if (ref_lock == NULL) {
2457 fprintf(stderr, "Unable to lock remote branch %s\n",
2458 ref->name);
2459 rc = 1;
2460 continue;
2461 }
2462 /* Set up revision info for this refspec */
2464 commit_argc = 3;
2465 new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
2466 old_sha1_hex = NULL;
2467 commit_argv[1] = "--objects";
2468 commit_argv[2] = new_sha1_hex;
2469 if (!push_all && !is_zero_sha1(ref->old_sha1)) {
2470 old_sha1_hex = xmalloc(42);
2471 sprintf(old_sha1_hex, "^%s",
2472 sha1_to_hex(ref->old_sha1));
2473 commit_argv[3] = old_sha1_hex;
2474 commit_argc++;
2475 }
2476 init_revisions(&revs, setup_git_directory());
2477 setup_revisions(commit_argc, commit_argv, &revs, NULL);
2478 free(new_sha1_hex);
2479 if (old_sha1_hex) {
2480 free(old_sha1_hex);
2481 commit_argv[1] = NULL;
2482 }
2483 /* Generate a list of objects that need to be pushed */
2485 pushing = 0;
2486 prepare_revision_walk(&revs);
2487 mark_edges_uninteresting(revs.commits);
2488 objects_to_send = get_delta(&revs, ref_lock);
2489 finish_all_active_slots();
2490 /* Push missing objects to remote, this would be a
2492 convenient time to pack them first if appropriate. */
2493 pushing = 1;
2494 if (objects_to_send)
2495 fprintf(stderr, " sending %d objects\n",
2496 objects_to_send);
2497#ifdef USE_CURL_MULTI
2498 fill_active_slots();
2499 add_fill_function(NULL, fill_active_slot);
2500#endif
2501 finish_all_active_slots();
2502 /* Update the remote branch if all went well */
2504 if (aborted || !update_remote(ref->new_sha1, ref_lock)) {
2505 rc = 1;
2506 goto unlock;
2507 }
2508 unlock:
2510 if (!rc)
2511 fprintf(stderr, " done\n");
2512 unlock_remote(ref_lock);
2513 check_locks();
2514 }
2515 /* Update remote server info if appropriate */
2517 if (remote->has_info_refs && new_refs) {
2518 if (info_ref_lock && remote->can_update_info_refs) {
2519 fprintf(stderr, "Updating remote server info\n");
2520 update_remote_info_refs(info_ref_lock);
2521 } else {
2522 fprintf(stderr, "Unable to update server info\n");
2523 }
2524 }
2525 if (info_ref_lock)
2526 unlock_remote(info_ref_lock);
2527 cleanup:
2529 free(remote);
2530 curl_slist_free_all(no_pragma_header);
2532 curl_slist_free_all(default_headers);
2533 http_cleanup();
2535 request = request_queue_head;
2537 while (request != NULL) {
2538 next_request = request->next;
2539 release_request(request);
2540 request = next_request;
2541 }
2542 return rc;
2544}