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http-push: support for updating remote info/refs
[thirdparty/git.git] / http-push.c
CommitLineData
58e60dd2
NH		 1#include "cache.h"
2#include "commit.h"
3#include "pack.h"
4#include "fetch.h"
5#include "tag.h"
6#include "blob.h"
29508e1e 7#include "http.h"
aa1dbc98
NH		 8#include "refs.h"
9#include "revision.h"
29508e1e 10
bee8e79d 11#include <expat.h>
58e60dd2
NH		 12
13static const char http_push_usage[] =
14"git-http-push [--complete] [--force] [--verbose] <url> <ref> [<ref>...]\n";
15
92e2eb9c
JS		 16#ifndef XML_STATUS_OK
17enum XML_Status {
18 XML_STATUS_OK = 1,
19 XML_STATUS_ERROR = 0
20};
21#define XML_STATUS_OK 1
22#define XML_STATUS_ERROR 0
23#endif
24
197e8951 25#define PREV_BUF_SIZE 4096
58e60dd2
NH		 26#define RANGE_HEADER_SIZE 30
27
acf59575 28/* DAV methods */
58e60dd2
NH		 29#define DAV_LOCK "LOCK"
30#define DAV_MKCOL "MKCOL"
31#define DAV_MOVE "MOVE"
32#define DAV_PROPFIND "PROPFIND"
33#define DAV_PUT "PUT"
34#define DAV_UNLOCK "UNLOCK"
acf59575
NH		 35
36/* DAV lock flags */
37#define DAV_PROP_LOCKWR (1u << 0)
38#define DAV_PROP_LOCKEX (1u << 1)
39#define DAV_LOCK_OK (1u << 2)
40
41/* DAV XML properties */
42#define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
43#define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
44#define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
45#define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
46#define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
47#define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
aa1dbc98
NH		 48#define DAV_PROPFIND_RESP ".multistatus.response"
49#define DAV_PROPFIND_NAME ".multistatus.response.href"
50#define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
acf59575
NH		 51
52/* DAV request body templates */
aa1dbc98
NH		 53#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>"
54#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		 55#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>"
56
75187c9d
NH		 57#define LOCK_TIME 600
58#define LOCK_REFRESH 30
59
aa1dbc98
NH		 60/* bits #0-4 in revision.h */
61
197e8951
NH		 62#define LOCAL (1u << 5)
63#define REMOTE (1u << 6)
64#define FETCHING (1u << 7)
65#define PUSHING (1u << 8)
aa1dbc98 66
58e60dd2
NH		 67static int pushing = 0;
68static int aborted = 0;
0dd276b8 69static char remote_dir_exists[256];
58e60dd2 70
58e60dd2
NH		 71static struct curl_slist *no_pragma_header;
72static struct curl_slist *default_headers;
58e60dd2
NH		 73
74static int push_verbosely = 0;
75static int push_all = 0;
76static int force_all = 0;
77
aa1dbc98
NH		 78static struct object_list *objects = NULL;
79
58e60dd2
NH		 80struct repo
81{
82 char *url;
aa1dbc98 83 int path_len;
197e8951
NH		 84 int has_info_refs;
85 int can_update_info_refs;
86 int has_info_packs;
58e60dd2 87 struct packed_git *packs;
512d632c 88 struct remote_lock *locks;
58e60dd2
NH		 89};
90
91static struct repo *remote = NULL;
92
93enum transfer_state {
197e8951
NH		 94 NEED_FETCH,
95 RUN_FETCH_LOOSE,
96 RUN_FETCH_PACKED,
58e60dd2
NH		 97 NEED_PUSH,
98 RUN_MKCOL,
99 RUN_PUT,
100 RUN_MOVE,
101 ABORTED,
102 COMPLETE,
103};
104
105struct transfer_request
106{
aa1dbc98 107 struct object *obj;
58e60dd2
NH		 108 char *url;
109 char *dest;
aa1dbc98 110 struct remote_lock *lock;
58e60dd2
NH		 111 struct curl_slist *headers;
112 struct buffer buffer;
113 char filename[PATH_MAX];
114 char tmpfile[PATH_MAX];
197e8951
NH		 115 int local_fileno;
116 FILE *local_stream;
58e60dd2
NH		 117 enum transfer_state state;
118 CURLcode curl_result;
119 char errorstr[CURL_ERROR_SIZE];
120 long http_code;
121 unsigned char real_sha1[20];
122 SHA_CTX c;
123 z_stream stream;
124 int zret;
125 int rename;
197e8951 126 void *userData;
58e60dd2
NH		 127 struct active_request_slot *slot;
128 struct transfer_request *next;
129};
130
58e60dd2 131static struct transfer_request *request_queue_head = NULL;
58e60dd2 132
acf59575
NH		 133struct xml_ctx
134{
135 char *name;
136 int len;
137 char *cdata;
138 void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
139 void *userData;
140};
141
aa1dbc98 142struct remote_lock
26349b2e 143{
75187c9d 144 char *url;
26349b2e 145 char *owner;
75187c9d 146 char *token;
26349b2e
NH		 147 time_t start_time;
148 long timeout;
75187c9d 149 int refreshing;
aa1dbc98
NH		 150 struct remote_lock *next;
151};
152
3030baa7
NH		 153/* Flags that control remote_ls processing */
154#define PROCESS_FILES (1u << 0)
155#define PROCESS_DIRS (1u << 1)
156#define RECURSIVE (1u << 2)
157
158/* Flags that remote_ls passes to callback functions */
159#define IS_DIR (1u << 0)
160
161struct remote_ls_ctx
aa1dbc98 162{
3030baa7
NH		 163 char *path;
164 void (*userFunc)(struct remote_ls_ctx *ls);
165 void *userData;
166 int flags;
167 char *dentry_name;
168 int dentry_flags;
169 struct remote_ls_ctx *parent;
26349b2e
NH		 170};
171
29508e1e 172static void finish_request(struct transfer_request *request);
197e8951 173static void release_request(struct transfer_request *request);
58e60dd2 174
29508e1e 175static void process_response(void *callback_data)
58e60dd2 176{
29508e1e
NH		 177 struct transfer_request *request =
178 (struct transfer_request *)callback_data;
58e60dd2 179
29508e1e 180 finish_request(request);
58e60dd2
NH		 181}
182
197e8951
NH		 183static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
184 void *data)
185{
186 unsigned char expn[4096];
187 size_t size = eltsize * nmemb;
188 int posn = 0;
189 struct transfer_request *request = (struct transfer_request *)data;
190 do {
191 ssize_t retval = write(request->local_fileno,
192 ptr + posn, size - posn);
193 if (retval < 0)
194 return posn;
195 posn += retval;
196 } while (posn < size);
197
198 request->stream.avail_in = size;
199 request->stream.next_in = ptr;
200 do {
201 request->stream.next_out = expn;
202 request->stream.avail_out = sizeof(expn);
203 request->zret = inflate(&request->stream, Z_SYNC_FLUSH);
204 SHA1_Update(&request->c, expn,
205 sizeof(expn) - request->stream.avail_out);
206 } while (request->stream.avail_in && request->zret == Z_OK);
207 data_received++;
208 return size;
209}
210
211static void start_fetch_loose(struct transfer_request *request)
212{
213 char *hex = sha1_to_hex(request->obj->sha1);
214 char *filename;
215 char prevfile[PATH_MAX];
216 char *url;
217 char *posn;
218 int prevlocal;
219 unsigned char prev_buf[PREV_BUF_SIZE];
220 ssize_t prev_read = 0;
221 long prev_posn = 0;
222 char range[RANGE_HEADER_SIZE];
223 struct curl_slist *range_header = NULL;
224 struct active_request_slot *slot;
225
226 filename = sha1_file_name(request->obj->sha1);
227 snprintf(request->filename, sizeof(request->filename), "%s", filename);
228 snprintf(request->tmpfile, sizeof(request->tmpfile),
229 "%s.temp", filename);
230
231 snprintf(prevfile, sizeof(prevfile), "%s.prev", request->filename);
232 unlink(prevfile);
233 rename(request->tmpfile, prevfile);
234 unlink(request->tmpfile);
235
236 if (request->local_fileno != -1)
237 error("fd leakage in start: %d", request->local_fileno);
238 request->local_fileno = open(request->tmpfile,
239 O_WRONLY | O_CREAT | O_EXCL, 0666);
240 /* This could have failed due to the "lazy directory creation";
241 * try to mkdir the last path component.
242 */
243 if (request->local_fileno < 0 && errno == ENOENT) {
244 char *dir = strrchr(request->tmpfile, '/');
245 if (dir) {
246 *dir = 0;
247 mkdir(request->tmpfile, 0777);
248 *dir = '/';
249 }
250 request->local_fileno = open(request->tmpfile,
251 O_WRONLY | O_CREAT | O_EXCL, 0666);
252 }
253
254 if (request->local_fileno < 0) {
255 request->state = ABORTED;
256 error("Couldn't create temporary file %s for %s: %s",
257 request->tmpfile, request->filename, strerror(errno));
258 return;
259 }
260
261 memset(&request->stream, 0, sizeof(request->stream));
262
263 inflateInit(&request->stream);
264
265 SHA1_Init(&request->c);
266
267 url = xmalloc(strlen(remote->url) + 50);
268 request->url = xmalloc(strlen(remote->url) + 50);
269 strcpy(url, remote->url);
270 posn = url + strlen(remote->url);
271 strcpy(posn, "objects/");
272 posn += 8;
273 memcpy(posn, hex, 2);
274 posn += 2;
275 *(posn++) = '/';
276 strcpy(posn, hex + 2);
277 strcpy(request->url, url);
278
279 /* If a previous temp file is present, process what was already
280 fetched. */
281 prevlocal = open(prevfile, O_RDONLY);
282 if (prevlocal != -1) {
283 do {
284 prev_read = read(prevlocal, prev_buf, PREV_BUF_SIZE);
285 if (prev_read>0) {
286 if (fwrite_sha1_file(prev_buf,
287 1,
288 prev_read,
289 request) == prev_read) {
290 prev_posn += prev_read;
291 } else {
292 prev_read = -1;
293 }
294 }
295 } while (prev_read > 0);
296 close(prevlocal);
297 }
298 unlink(prevfile);
299
300 /* Reset inflate/SHA1 if there was an error reading the previous temp
301 file; also rewind to the beginning of the local file. */
302 if (prev_read == -1) {
303 memset(&request->stream, 0, sizeof(request->stream));
304 inflateInit(&request->stream);
305 SHA1_Init(&request->c);
306 if (prev_posn>0) {
307 prev_posn = 0;
308 lseek(request->local_fileno, SEEK_SET, 0);
309 ftruncate(request->local_fileno, 0);
310 }
311 }
312
313 slot = get_active_slot();
314 slot->callback_func = process_response;
315 slot->callback_data = request;
316 request->slot = slot;
317
318 curl_easy_setopt(slot->curl, CURLOPT_FILE, request);
319 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
320 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
321 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
322 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
323
324 /* If we have successfully processed data from a previous fetch
325 attempt, only fetch the data we don't already have. */
326 if (prev_posn>0) {
327 if (push_verbosely)
328 fprintf(stderr,
329 "Resuming fetch of object %s at byte %ld\n",
330 hex, prev_posn);
331 sprintf(range, "Range: bytes=%ld-", prev_posn);
332 range_header = curl_slist_append(range_header, range);
333 curl_easy_setopt(slot->curl,
334 CURLOPT_HTTPHEADER, range_header);
335 }
336
337 /* Try to get the request started, abort the request on error */
338 request->state = RUN_FETCH_LOOSE;
339 if (!start_active_slot(slot)) {
340 fprintf(stderr, "Unable to start GET request\n");
341 remote->can_update_info_refs = 0;
342 release_request(request);
343 }
344}
345
346static void start_fetch_packed(struct transfer_request *request)
347{
348 char *url;
349 struct packed_git *target;
350 FILE *packfile;
351 char *filename;
352 long prev_posn = 0;
353 char range[RANGE_HEADER_SIZE];
354 struct curl_slist *range_header = NULL;
355
356 struct transfer_request *check_request = request_queue_head;
357 struct active_request_slot *slot;
358
359 target = find_sha1_pack(request->obj->sha1, remote->packs);
360 if (!target) {
361 fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
362 remote->can_update_info_refs = 0;
363 release_request(request);
364 return;
365 }
366
367 fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
368 fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
369
370 filename = sha1_pack_name(target->sha1);
371 snprintf(request->filename, sizeof(request->filename), "%s", filename);
372 snprintf(request->tmpfile, sizeof(request->tmpfile),
373 "%s.temp", filename);
374
375 url = xmalloc(strlen(remote->url) + 64);
376 sprintf(url, "%sobjects/pack/pack-%s.pack",
377 remote->url, sha1_to_hex(target->sha1));
378
379 /* Make sure there isn't another open request for this pack */
380 while (check_request) {
381 if (check_request->state == RUN_FETCH_PACKED &&
382 !strcmp(check_request->url, url)) {
383 free(url);
384 release_request(request);
385 return;
386 }
387 check_request = check_request->next;
388 }
389
390 packfile = fopen(request->tmpfile, "a");
391 if (!packfile) {
392 fprintf(stderr, "Unable to open local file %s for pack",
393 filename);
394 remote->can_update_info_refs = 0;
395 free(url);
396 return;
397 }
398
399 slot = get_active_slot();
400 slot->callback_func = process_response;
401 slot->callback_data = request;
402 request->slot = slot;
403 request->local_stream = packfile;
404 request->userData = target;
405
406 request->url = url;
407 curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
408 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
409 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
410 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
411 slot->local = packfile;
412
413 /* If there is data present from a previous transfer attempt,
414 resume where it left off */
415 prev_posn = ftell(packfile);
416 if (prev_posn>0) {
417 if (push_verbosely)
418 fprintf(stderr,
419 "Resuming fetch of pack %s at byte %ld\n",
420 sha1_to_hex(target->sha1), prev_posn);
421 sprintf(range, "Range: bytes=%ld-", prev_posn);
422 range_header = curl_slist_append(range_header, range);
423 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
424 }
425
426 /* Try to get the request started, abort the request on error */
427 request->state = RUN_FETCH_PACKED;
428 if (!start_active_slot(slot)) {
429 fprintf(stderr, "Unable to start GET request\n");
430 remote->can_update_info_refs = 0;
431 release_request(request);
432 }
433}
434
58e60dd2
NH		 435static void start_mkcol(struct transfer_request *request)
436{
aa1dbc98 437 char *hex = sha1_to_hex(request->obj->sha1);
58e60dd2
NH		 438 struct active_request_slot *slot;
439 char *posn;
440
441 request->url = xmalloc(strlen(remote->url) + 13);
442 strcpy(request->url, remote->url);
443 posn = request->url + strlen(remote->url);
444 strcpy(posn, "objects/");
445 posn += 8;
446 memcpy(posn, hex, 2);
447 posn += 2;
448 strcpy(posn, "/");
449
450 slot = get_active_slot();
29508e1e
NH		 451 slot->callback_func = process_response;
452 slot->callback_data = request;
58e60dd2
NH		 453 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
454 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
455 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
456 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
457 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
458
459 if (start_active_slot(slot)) {
460 request->slot = slot;
461 request->state = RUN_MKCOL;
462 } else {
463 request->state = ABORTED;
464 free(request->url);
7b899967 465 request->url = NULL;
58e60dd2
NH		 466 }
467}
468
469static void start_put(struct transfer_request *request)
470{
aa1dbc98 471 char *hex = sha1_to_hex(request->obj->sha1);
58e60dd2
NH		 472 struct active_request_slot *slot;
473 char *posn;
474 char type[20];
475 char hdr[50];
476 void *unpacked;
477 unsigned long len;
478 int hdrlen;
479 ssize_t size;
480 z_stream stream;
481
aa1dbc98 482 unpacked = read_sha1_file(request->obj->sha1, type, &len);
58e60dd2
NH		 483 hdrlen = sprintf(hdr, "%s %lu", type, len) + 1;
484
485 /* Set it up */
486 memset(&stream, 0, sizeof(stream));
487 deflateInit(&stream, Z_BEST_COMPRESSION);
488 size = deflateBound(&stream, len + hdrlen);
489 request->buffer.buffer = xmalloc(size);
490
491 /* Compress it */
492 stream.next_out = request->buffer.buffer;
493 stream.avail_out = size;
494
495 /* First header.. */
496 stream.next_in = (void *)hdr;
497 stream.avail_in = hdrlen;
498 while (deflate(&stream, 0) == Z_OK)
499 /* nothing */;
500
501 /* Then the data itself.. */
502 stream.next_in = unpacked;
503 stream.avail_in = len;
504 while (deflate(&stream, Z_FINISH) == Z_OK)
505 /* nothing */;
506 deflateEnd(&stream);
507 free(unpacked);
508
509 request->buffer.size = stream.total_out;
510 request->buffer.posn = 0;
511
58e60dd2 512 request->url = xmalloc(strlen(remote->url) +
26349b2e 513 strlen(request->lock->token) + 51);
58e60dd2
NH		 514 strcpy(request->url, remote->url);
515 posn = request->url + strlen(remote->url);
516 strcpy(posn, "objects/");
517 posn += 8;
518 memcpy(posn, hex, 2);
519 posn += 2;
520 *(posn++) = '/';
521 strcpy(posn, hex + 2);
522 request->dest = xmalloc(strlen(request->url) + 14);
523 sprintf(request->dest, "Destination: %s", request->url);
524 posn += 38;
525 *(posn++) = '.';
26349b2e 526 strcpy(posn, request->lock->token);
58e60dd2
NH		 527
528 slot = get_active_slot();
29508e1e
NH		 529 slot->callback_func = process_response;
530 slot->callback_data = request;
58e60dd2
NH		 531 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &request->buffer);
532 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, request->buffer.size);
533 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
534 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
535 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
536 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
537 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
538 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
539 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
540
541 if (start_active_slot(slot)) {
542 request->slot = slot;
543 request->state = RUN_PUT;
544 } else {
545 request->state = ABORTED;
546 free(request->url);
7b899967 547 request->url = NULL;
58e60dd2
NH		 548 }
549}
550
551static void start_move(struct transfer_request *request)
552{
553 struct active_request_slot *slot;
554 struct curl_slist *dav_headers = NULL;
555
556 slot = get_active_slot();
29508e1e
NH		 557 slot->callback_func = process_response;
558 slot->callback_data = request;
58e60dd2
NH		 559 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); /* undo PUT setup */
560 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MOVE);
561 dav_headers = curl_slist_append(dav_headers, request->dest);
562 dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
563 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
564 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
565 curl_easy_setopt(slot->curl, CURLOPT_URL, request->url);
566
567 if (start_active_slot(slot)) {
568 request->slot = slot;
569 request->state = RUN_MOVE;
570 } else {
571 request->state = ABORTED;
572 free(request->url);
7b899967 573 request->url = NULL;
58e60dd2
NH		 574 }
575}
576
512d632c 577static int refresh_lock(struct remote_lock *lock)
75187c9d
NH		 578{
579 struct active_request_slot *slot;
baa7b67d 580 struct slot_results results;
75187c9d
NH		 581 char *if_header;
582 char timeout_header[25];
583 struct curl_slist *dav_headers = NULL;
512d632c 584 int rc = 0;
75187c9d 585
512d632c 586 lock->refreshing = 1;
75187c9d 587
512d632c
NH		 588 if_header = xmalloc(strlen(lock->token) + 25);
589 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
590 sprintf(timeout_header, "Timeout: Second-%ld", lock->timeout);
591 dav_headers = curl_slist_append(dav_headers, if_header);
592 dav_headers = curl_slist_append(dav_headers, timeout_header);
75187c9d 593
512d632c
NH		 594 slot = get_active_slot();
595 slot->results = &results;
596 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
597 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
598 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
599 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
600 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
75187c9d 601
512d632c
NH		 602 if (start_active_slot(slot)) {
603 run_active_slot(slot);
604 if (results.curl_result != CURLE_OK) {
605 fprintf(stderr, "LOCK HTTP error %ld\n",
606 results.http_code);
607 } else {
608 lock->start_time = time(NULL);
609 rc = 1;
610 }
611 }
aa1dbc98 612
512d632c
NH		 613 lock->refreshing = 0;
614 curl_slist_free_all(dav_headers);
615 free(if_header);
aa1dbc98 616
512d632c
NH		 617 return rc;
618}
619
620static void check_locks()
621{
622 struct remote_lock *lock = remote->locks;
623 time_t current_time = time(NULL);
624 int time_remaining;
625
626 while (lock) {
627 time_remaining = lock->start_time + lock->timeout -
628 current_time;
629 if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
630 if (!refresh_lock(lock)) {
631 fprintf(stderr,
632 "Unable to refresh lock for %s\n",
633 lock->url);
634 aborted = 1;
635 return;
aa1dbc98 636 }
75187c9d 637 }
512d632c 638 lock = lock->next;
75187c9d 639 }
aa1dbc98 640}
75187c9d 641
aa1dbc98
NH		 642static void release_request(struct transfer_request *request)
643{
644 struct transfer_request *entry = request_queue_head;
645
646 if (request == request_queue_head) {
647 request_queue_head = request->next;
648 } else {
649 while (entry->next != NULL && entry->next != request)
650 entry = entry->next;
651 if (entry->next == request)
652 entry->next = entry->next->next;
653 }
654
197e8951
NH		 655 if (request->local_fileno != -1)
656 close(request->local_fileno);
657 if (request->local_stream)
658 fclose(request->local_stream);
aa1dbc98
NH		 659 if (request->url != NULL)
660 free(request->url);
661 free(request);
75187c9d
NH		 662}
663
58e60dd2
NH		 664static void finish_request(struct transfer_request *request)
665{
197e8951
NH		 666 struct stat st;
667 struct packed_git *target;
668 struct packed_git **lst;
669
670 request->curl_result = request->slot->curl_result;
58e60dd2
NH		 671 request->http_code = request->slot->http_code;
672 request->slot = NULL;
75187c9d 673
aa1dbc98 674 /* Keep locks active */
512d632c 675 check_locks();
75187c9d 676
58e60dd2
NH		 677 if (request->headers != NULL)
678 curl_slist_free_all(request->headers);
7b899967
NH		 679
680 /* URL is reused for MOVE after PUT */
681 if (request->state != RUN_PUT) {
682 free(request->url);
683 request->url = NULL;
aa1dbc98 684 }
7b899967 685
aa1dbc98 686 if (request->state == RUN_MKCOL) {
58e60dd2
NH		 687 if (request->curl_result == CURLE_OK ||
688 request->http_code == 405) {
aa1dbc98 689 remote_dir_exists[request->obj->sha1[0]] = 1;
58e60dd2
NH		 690 start_put(request);
691 } else {
692 fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
aa1dbc98 693 sha1_to_hex(request->obj->sha1),
58e60dd2
NH		 694 request->curl_result, request->http_code);
695 request->state = ABORTED;
696 aborted = 1;
697 }
698 } else if (request->state == RUN_PUT) {
699 if (request->curl_result == CURLE_OK) {
700 start_move(request);
701 } else {
702 fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
aa1dbc98 703 sha1_to_hex(request->obj->sha1),
58e60dd2
NH		 704 request->curl_result, request->http_code);
705 request->state = ABORTED;
706 aborted = 1;
707 }
708 } else if (request->state == RUN_MOVE) {
709 if (request->curl_result == CURLE_OK) {
aa1dbc98
NH		 710 fprintf(stderr, " sent %s\n",
711 sha1_to_hex(request->obj->sha1));
aa1dbc98
NH		 712 request->obj->flags |= REMOTE;
713 release_request(request);
58e60dd2
NH		 714 } else {
715 fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
aa1dbc98 716 sha1_to_hex(request->obj->sha1),
58e60dd2
NH		 717 request->curl_result, request->http_code);
718 request->state = ABORTED;
719 aborted = 1;
720 }
197e8951
NH		 721 } else if (request->state == RUN_FETCH_LOOSE) {
722 fchmod(request->local_fileno, 0444);
723 close(request->local_fileno); request->local_fileno = -1;
724
725 if (request->curl_result != CURLE_OK &&
726 request->http_code != 416) {
727 if (stat(request->tmpfile, &st) == 0) {
728 if (st.st_size == 0)
729 unlink(request->tmpfile);
730 }
731 } else {
732 if (request->http_code == 416)
733 fprintf(stderr, "Warning: requested range invalid; we may already have all the data.\n");
734
735 inflateEnd(&request->stream);
736 SHA1_Final(request->real_sha1, &request->c);
737 if (request->zret != Z_STREAM_END) {
738 unlink(request->tmpfile);
739 } else if (memcmp(request->obj->sha1, request->real_sha1, 20)) {
740 unlink(request->tmpfile);
741 } else {
742 request->rename =
743 move_temp_to_file(
744 request->tmpfile,
745 request->filename);
746 if (request->rename == 0) {
747 request->obj->flags |= (LOCAL | REMOTE);
748 }
749 }
750 }
751
752 /* Try fetching packed if necessary */
753 if (request->obj->flags & LOCAL)
754 release_request(request);
755 else
756 start_fetch_packed(request);
757
758 } else if (request->state == RUN_FETCH_PACKED) {
759 if (request->curl_result != CURLE_OK) {
760 fprintf(stderr, "Unable to get pack file %s\n%s",
761 request->url, curl_errorstr);
762 remote->can_update_info_refs = 0;
763 } else {
764 fclose(request->local_stream);
765 request->local_stream = NULL;
766 if (!move_temp_to_file(request->tmpfile,
767 request->filename)) {
768 target = (struct packed_git *)request->userData;
769 lst = &remote->packs;
770 while (*lst != target)
771 lst = &((*lst)->next);
772 *lst = (*lst)->next;
773
774 if (!verify_pack(target, 0))
775 install_packed_git(target);
776 else
777 remote->can_update_info_refs = 0;
778 }
779 }
780 release_request(request);
58e60dd2
NH		 781 }
782}
783
29508e1e 784void fill_active_slots(void)
58e60dd2
NH		 785{
786 struct transfer_request *request = request_queue_head;
197e8951 787 struct transfer_request *next;
58e60dd2
NH		 788 struct active_request_slot *slot = active_queue_head;
789 int num_transfers;
790
791 if (aborted)
792 return;
793
794 while (active_requests < max_requests && request != NULL) {
197e8951
NH		 795 next = request->next;
796 if (request->state == NEED_FETCH) {
797 start_fetch_loose(request);
798 } else if (pushing && request->state == NEED_PUSH) {
aa1dbc98 799 if (remote_dir_exists[request->obj->sha1[0]] == 1) {
0dd276b8 800 start_put(request);
aa1dbc98 801 } else {
0dd276b8 802 start_mkcol(request);
aa1dbc98 803 }
58e60dd2
NH		 804 curl_multi_perform(curlm, &num_transfers);
805 }
197e8951 806 request = next;
58e60dd2
NH		 807 }
808
809 while (slot != NULL) {
810 if (!slot->in_use && slot->curl != NULL) {
811 curl_easy_cleanup(slot->curl);
812 slot->curl = NULL;
813 }
814 slot = slot->next;
aa1dbc98 815 }
58e60dd2 816}
58e60dd2 817
aa1dbc98
NH		 818static void get_remote_object_list(unsigned char parent);
819
197e8951
NH		 820static void add_fetch_request(struct object *obj)
821{
822 struct transfer_request *request;
823
824 check_locks();
825
826 /*
827 * Don't fetch the object if it's known to exist locally
828 * or is already in the request queue
829 */
830 if (remote_dir_exists[obj->sha1[0]] == -1)
831 get_remote_object_list(obj->sha1[0]);
832 if (obj->flags & (LOCAL | FETCHING))
833 return;
834
835 obj->flags |= FETCHING;
836 request = xmalloc(sizeof(*request));
837 request->obj = obj;
838 request->url = NULL;
839 request->lock = NULL;
840 request->headers = NULL;
841 request->local_fileno = -1;
842 request->local_stream = NULL;
843 request->state = NEED_FETCH;
844 request->next = request_queue_head;
845 request_queue_head = request;
846
847 fill_active_slots();
848 step_active_slots();
849}
850
851static void add_send_request(struct object *obj, struct remote_lock *lock)
58e60dd2
NH		 852{
853 struct transfer_request *request = request_queue_head;
58e60dd2 854 struct packed_git *target;
58e60dd2 855
512d632c
NH		 856 /* Keep locks active */
857 check_locks();
858
aa1dbc98
NH		 859 /*
860 * Don't push the object if it's known to exist on the remote
861 * or is already in the request queue
862 */
863 if (remote_dir_exists[obj->sha1[0]] == -1)
864 get_remote_object_list(obj->sha1[0]);
865 if (obj->flags & (REMOTE | PUSHING))
866 return;
867 target = find_sha1_pack(obj->sha1, remote->packs);
868 if (target) {
869 obj->flags |= REMOTE;
58e60dd2 870 return;
aa1dbc98 871 }
58e60dd2 872
aa1dbc98 873 obj->flags |= PUSHING;
58e60dd2 874 request = xmalloc(sizeof(*request));
aa1dbc98 875 request->obj = obj;
58e60dd2 876 request->url = NULL;
26349b2e 877 request->lock = lock;
58e60dd2 878 request->headers = NULL;
197e8951
NH		 879 request->local_fileno = -1;
880 request->local_stream = NULL;
aa1dbc98 881 request->state = NEED_PUSH;
c17fb6ee
NH		 882 request->next = request_queue_head;
883 request_queue_head = request;
29508e1e
NH		 884
885 fill_active_slots();
886 step_active_slots();
58e60dd2
NH		 887}
888
889static int fetch_index(unsigned char *sha1)
890{
891 char *hex = sha1_to_hex(sha1);
892 char *filename;
893 char *url;
894 char tmpfile[PATH_MAX];
895 long prev_posn = 0;
896 char range[RANGE_HEADER_SIZE];
897 struct curl_slist *range_header = NULL;
898
899 FILE *indexfile;
900 struct active_request_slot *slot;
baa7b67d 901 struct slot_results results;
58e60dd2 902
c17fb6ee
NH		 903 /* Don't use the index if the pack isn't there */
904 url = xmalloc(strlen(remote->url) + 65);
905 sprintf(url, "%s/objects/pack/pack-%s.pack", remote->url, hex);
906 slot = get_active_slot();
baa7b67d 907 slot->results = &results;
c17fb6ee
NH		 908 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
909 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
910 if (start_active_slot(slot)) {
911 run_active_slot(slot);
baa7b67d 912 if (results.curl_result != CURLE_OK) {
c17fb6ee
NH		 913 free(url);
914 return error("Unable to verify pack %s is available",
915 hex);
916 }
917 } else {
918 return error("Unable to start request");
919 }
920
58e60dd2
NH		 921 if (has_pack_index(sha1))
922 return 0;
923
924 if (push_verbosely)
925 fprintf(stderr, "Getting index for pack %s\n", hex);
926
58e60dd2
NH		 927 sprintf(url, "%s/objects/pack/pack-%s.idx", remote->url, hex);
928
929 filename = sha1_pack_index_name(sha1);
930 snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
931 indexfile = fopen(tmpfile, "a");
932 if (!indexfile)
933 return error("Unable to open local file %s for pack index",
934 filename);
935
936 slot = get_active_slot();
baa7b67d 937 slot->results = &results;
c17fb6ee
NH		 938 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
939 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
58e60dd2
NH		 940 curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
941 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
942 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
943 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
944 slot->local = indexfile;
945
946 /* If there is data present from a previous transfer attempt,
947 resume where it left off */
948 prev_posn = ftell(indexfile);
949 if (prev_posn>0) {
950 if (push_verbosely)
951 fprintf(stderr,
952 "Resuming fetch of index for pack %s at byte %ld\n",
953 hex, prev_posn);
954 sprintf(range, "Range: bytes=%ld-", prev_posn);
955 range_header = curl_slist_append(range_header, range);
956 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
957 }
958
959 if (start_active_slot(slot)) {
960 run_active_slot(slot);
baa7b67d 961 if (results.curl_result != CURLE_OK) {
58e60dd2
NH		 962 free(url);
963 fclose(indexfile);
964 return error("Unable to get pack index %s\n%s", url,
965 curl_errorstr);
966 }
967 } else {
968 free(url);
7b899967 969 fclose(indexfile);
58e60dd2
NH		 970 return error("Unable to start request");
971 }
972
973 free(url);
974 fclose(indexfile);
975
976 return move_temp_to_file(tmpfile, filename);
977}
978
979static int setup_index(unsigned char *sha1)
980{
981 struct packed_git *new_pack;
58e60dd2
NH		 982
983 if (fetch_index(sha1))
984 return -1;
985
986 new_pack = parse_pack_index(sha1);
987 new_pack->next = remote->packs;
988 remote->packs = new_pack;
989 return 0;
990}
991
f4f440a0 992static int fetch_indices(void)
58e60dd2
NH		 993{
994 unsigned char sha1[20];
995 char *url;
996 struct buffer buffer;
997 char *data;
998 int i = 0;
999
1000 struct active_request_slot *slot;
baa7b67d 1001 struct slot_results results;
58e60dd2
NH		 1002
1003 data = xmalloc(4096);
1004 memset(data, 0, 4096);
1005 buffer.size = 4096;
1006 buffer.posn = 0;
1007 buffer.buffer = data;
1008
1009 if (push_verbosely)
1010 fprintf(stderr, "Getting pack list\n");
1011
1012 url = xmalloc(strlen(remote->url) + 21);
1013 sprintf(url, "%s/objects/info/packs", remote->url);
1014
1015 slot = get_active_slot();
baa7b67d 1016 slot->results = &results;
58e60dd2 1017 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
29508e1e 1018 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH		 1019 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1020 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1021 if (start_active_slot(slot)) {
1022 run_active_slot(slot);
baa7b67d 1023 if (results.curl_result != CURLE_OK) {
58e60dd2
NH		 1024 free(buffer.buffer);
1025 free(url);
baa7b67d 1026 if (results.http_code == 404)
58e60dd2
NH		 1027 return 0;
1028 else
1029 return error("%s", curl_errorstr);
1030 }
1031 } else {
1032 free(buffer.buffer);
1033 free(url);
1034 return error("Unable to start request");
1035 }
1036 free(url);
1037
1038 data = buffer.buffer;
1039 while (i < buffer.posn) {
1040 switch (data[i]) {
1041 case 'P':
1042 i++;
1043 if (i + 52 < buffer.posn &&
1044 !strncmp(data + i, " pack-", 6) &&
1045 !strncmp(data + i + 46, ".pack\n", 6)) {
1046 get_sha1_hex(data + i + 6, sha1);
1047 setup_index(sha1);
1048 i += 51;
1049 break;
1050 }
1051 default:
1052 while (data[i] != '\n')
1053 i++;
1054 }
1055 i++;
1056 }
1057
1058 free(buffer.buffer);
1059 return 0;
1060}
1061
1062static inline int needs_quote(int ch)
1063{
1064 switch (ch) {
1065 case '/': case '-': case '.':
1066 case 'A'...'Z': case 'a'...'z': case '0'...'9':
1067 return 0;
1068 default:
1069 return 1;
1070 }
1071}
1072
1073static inline int hex(int v)
1074{
1075 if (v < 10) return '0' + v;
1076 else return 'A' + v - 10;
1077}
1078
1079static char *quote_ref_url(const char *base, const char *ref)
1080{
1081 const char *cp;
1082 char *dp, *qref;
1083 int len, baselen, ch;
1084
1085 baselen = strlen(base);
aa1dbc98 1086 len = baselen + 1;
58e60dd2
NH		 1087 for (cp = ref; (ch = *cp) != 0; cp++, len++)
1088 if (needs_quote(ch))
1089 len += 2; /* extra two hex plus replacement % */
1090 qref = xmalloc(len);
1091 memcpy(qref, base, baselen);
aa1dbc98 1092 for (cp = ref, dp = qref + baselen; (ch = *cp) != 0; cp++) {
58e60dd2
NH		 1093 if (needs_quote(ch)) {
1094 *dp++ = '%';
1095 *dp++ = hex((ch >> 4) & 0xF);
1096 *dp++ = hex(ch & 0xF);
1097 }
1098 else
1099 *dp++ = ch;
1100 }
1101 *dp = 0;
1102
1103 return qref;
1104}
1105
1106int fetch_ref(char *ref, unsigned char *sha1)
1107{
1108 char *url;
1109 char hex[42];
1110 struct buffer buffer;
1111 char *base = remote->url;
1112 struct active_request_slot *slot;
baa7b67d 1113 struct slot_results results;
58e60dd2
NH		 1114 buffer.size = 41;
1115 buffer.posn = 0;
1116 buffer.buffer = hex;
1117 hex[41] = '\0';
baa7b67d 1118
58e60dd2
NH		 1119 url = quote_ref_url(base, ref);
1120 slot = get_active_slot();
baa7b67d 1121 slot->results = &results;
58e60dd2 1122 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
29508e1e 1123 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH		 1124 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
1125 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1126 if (start_active_slot(slot)) {
1127 run_active_slot(slot);
baa7b67d 1128 if (results.curl_result != CURLE_OK)
58e60dd2
NH		 1129 return error("Couldn't get %s for %s\n%s",
1130 url, ref, curl_errorstr);
1131 } else {
1132 return error("Unable to start request");
1133 }
1134
1135 hex[40] = '\0';
1136 get_sha1_hex(hex, sha1);
1137 return 0;
1138}
1139
aa1dbc98
NH		 1140static void one_remote_object(const char *hex)
1141{
1142 unsigned char sha1[20];
1143 struct object *obj;
1144
1145 if (get_sha1_hex(hex, sha1) != 0)
1146 return;
1147
1148 obj = lookup_object(sha1);
1149 if (!obj)
1150 obj = parse_object(sha1);
1151
1152 /* Ignore remote objects that don't exist locally */
1153 if (!obj)
1154 return;
1155
1156 obj->flags |= REMOTE;
1157 if (!object_list_contains(objects, obj))
1158 add_object(obj, &objects, NULL, "");
1159}
1160
acf59575 1161static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
26349b2e 1162{
acf59575
NH		 1163 int *lock_flags = (int *)ctx->userData;
1164
1165 if (tag_closed) {
1166 if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
1167 if ((*lock_flags & DAV_PROP_LOCKEX) &&
1168 (*lock_flags & DAV_PROP_LOCKWR)) {
1169 *lock_flags |= DAV_LOCK_OK;
1170 }
1171 *lock_flags &= DAV_LOCK_OK;
1172 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
1173 *lock_flags |= DAV_PROP_LOCKWR;
1174 } else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
1175 *lock_flags |= DAV_PROP_LOCKEX;
1176 }
1177 }
26349b2e
NH		 1178}
1179
acf59575 1180static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
26349b2e 1181{
aa1dbc98 1182 struct remote_lock *lock = (struct remote_lock *)ctx->userData;
acf59575
NH		 1183
1184 if (tag_closed && ctx->cdata) {
1185 if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
1186 lock->owner = xmalloc(strlen(ctx->cdata) + 1);
1187 strcpy(lock->owner, ctx->cdata);
1188 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
1189 if (!strncmp(ctx->cdata, "Second-", 7))
1190 lock->timeout =
1191 strtol(ctx->cdata + 7, NULL, 10);
1192 } else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
1193 if (!strncmp(ctx->cdata, "opaquelocktoken:", 16)) {
3e2f62be 1194 lock->token = xmalloc(strlen(ctx->cdata) - 15);
acf59575
NH		 1195 strcpy(lock->token, ctx->cdata + 16);
1196 }
1197 }
26349b2e
NH		 1198 }
1199}
1200
aa1dbc98 1201static void one_remote_ref(char *refname);
aa1dbc98 1202
26349b2e 1203static void
acf59575 1204xml_start_tag(void *userData, const char *name, const char **atts)
26349b2e 1205{
acf59575
NH		 1206 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1207 const char *c = index(name, ':');
1208 int new_len;
1209
1210 if (c == NULL)
1211 c = name;
1212 else
1213 c++;
1214
1215 new_len = strlen(ctx->name) + strlen(c) + 2;
1216
1217 if (new_len > ctx->len) {
1218 ctx->name = xrealloc(ctx->name, new_len);
1219 ctx->len = new_len;
26349b2e 1220 }
acf59575
NH		 1221 strcat(ctx->name, ".");
1222 strcat(ctx->name, c);
26349b2e 1223
acf59575
NH		 1224 if (ctx->cdata) {
1225 free(ctx->cdata);
1226 ctx->cdata = NULL;
1227 }
1228
1229 ctx->userFunc(ctx, 0);
26349b2e
NH		 1230}
1231
58e60dd2 1232static void
acf59575 1233xml_end_tag(void *userData, const char *name)
58e60dd2 1234{
acf59575
NH		 1235 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1236 const char *c = index(name, ':');
1237 char *ep;
58e60dd2 1238
acf59575
NH		 1239 ctx->userFunc(ctx, 1);
1240
1241 if (c == NULL)
1242 c = name;
1243 else
1244 c++;
1245
1246 ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
1247 *ep = 0;
58e60dd2
NH		 1248}
1249
1250static void
acf59575 1251xml_cdata(void *userData, const XML_Char *s, int len)
58e60dd2 1252{
acf59575
NH		 1253 struct xml_ctx *ctx = (struct xml_ctx *)userData;
1254 if (ctx->cdata)
1255 free(ctx->cdata);
1256 ctx->cdata = xcalloc(len+1, 1);
1257 strncpy(ctx->cdata, s, len);
58e60dd2
NH		 1258}
1259
aa1dbc98 1260static struct remote_lock *lock_remote(char *path, long timeout)
58e60dd2
NH		 1261{
1262 struct active_request_slot *slot;
baa7b67d 1263 struct slot_results results;
58e60dd2 1264 struct buffer out_buffer;
26349b2e 1265 struct buffer in_buffer;
58e60dd2 1266 char *out_data;
26349b2e 1267 char *in_data;
58e60dd2 1268 char *url;
0772b9a6 1269 char *ep;
58e60dd2 1270 char timeout_header[25];
512d632c 1271 struct remote_lock *lock = NULL;
26349b2e
NH		 1272 XML_Parser parser = XML_ParserCreate(NULL);
1273 enum XML_Status result;
58e60dd2 1274 struct curl_slist *dav_headers = NULL;
acf59575 1275 struct xml_ctx ctx;
58e60dd2 1276
aa1dbc98
NH		 1277 url = xmalloc(strlen(remote->url) + strlen(path) + 1);
1278 sprintf(url, "%s%s", remote->url, path);
1279
0772b9a6
NH		 1280 /* Make sure leading directories exist for the remote ref */
1281 ep = strchr(url + strlen(remote->url) + 11, '/');
1282 while (ep) {
1283 *ep = 0;
1284 slot = get_active_slot();
baa7b67d 1285 slot->results = &results;
0772b9a6
NH		 1286 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
1287 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1288 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_MKCOL);
1289 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1290 if (start_active_slot(slot)) {
1291 run_active_slot(slot);
baa7b67d
NH		 1292 if (results.curl_result != CURLE_OK &&
1293 results.http_code != 405) {
0772b9a6
NH		 1294 fprintf(stderr,
1295 "Unable to create branch path %s\n",
1296 url);
1297 free(url);
1298 return NULL;
1299 }
1300 } else {
1301 fprintf(stderr, "Unable to start request\n");
1302 free(url);
1303 return NULL;
1304 }
1305 *ep = '/';
1306 ep = strchr(ep + 1, '/');
1307 }
1308
58e60dd2
NH		 1309 out_buffer.size = strlen(LOCK_REQUEST) + strlen(git_default_email) - 2;
1310 out_data = xmalloc(out_buffer.size + 1);
1311 snprintf(out_data, out_buffer.size + 1, LOCK_REQUEST, git_default_email);
1312 out_buffer.posn = 0;
1313 out_buffer.buffer = out_data;
1314
26349b2e
NH		 1315 in_buffer.size = 4096;
1316 in_data = xmalloc(in_buffer.size);
1317 in_buffer.posn = 0;
1318 in_buffer.buffer = in_data;
1319
75187c9d 1320 sprintf(timeout_header, "Timeout: Second-%ld", timeout);
58e60dd2
NH		 1321 dav_headers = curl_slist_append(dav_headers, timeout_header);
1322 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1323
1324 slot = get_active_slot();
baa7b67d 1325 slot->results = &results;
58e60dd2
NH		 1326 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1327 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1328 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
26349b2e 1329 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
29508e1e 1330 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH		 1331 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1332 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1333 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_LOCK);
1334 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1335
aa1dbc98 1336 lock = xcalloc(1, sizeof(*lock));
aa1dbc98 1337 lock->timeout = -1;
acf59575 1338
58e60dd2
NH		 1339 if (start_active_slot(slot)) {
1340 run_active_slot(slot);
baa7b67d 1341 if (results.curl_result == CURLE_OK) {
acf59575
NH		 1342 ctx.name = xcalloc(10, 1);
1343 ctx.len = 0;
1344 ctx.cdata = NULL;
1345 ctx.userFunc = handle_new_lock_ctx;
aa1dbc98 1346 ctx.userData = lock;
acf59575
NH		 1347 XML_SetUserData(parser, &ctx);
1348 XML_SetElementHandler(parser, xml_start_tag,
1349 xml_end_tag);
1350 XML_SetCharacterDataHandler(parser, xml_cdata);
1351 result = XML_Parse(parser, in_buffer.buffer,
1352 in_buffer.posn, 1);
1353 free(ctx.name);
1354 if (result != XML_STATUS_OK) {
1355 fprintf(stderr, "XML error: %s\n",
1356 XML_ErrorString(
1357 XML_GetErrorCode(parser)));
aa1dbc98 1358 lock->timeout = -1;
acf59575 1359 }
58e60dd2
NH		 1360 }
1361 } else {
58e60dd2
NH		 1362 fprintf(stderr, "Unable to start request\n");
1363 }
1364
acf59575 1365 curl_slist_free_all(dav_headers);
0772b9a6 1366 free(out_data);
26349b2e 1367 free(in_data);
26349b2e 1368
aa1dbc98
NH		 1369 if (lock->token == NULL || lock->timeout <= 0) {
1370 if (lock->token != NULL)
1371 free(lock->token);
1372 if (lock->owner != NULL)
1373 free(lock->owner);
75187c9d 1374 free(url);
aa1dbc98
NH		 1375 free(lock);
1376 lock = NULL;
acf59575 1377 } else {
aa1dbc98 1378 lock->url = url;
aa1dbc98 1379 lock->start_time = time(NULL);
512d632c
NH		 1380 lock->next = remote->locks;
1381 remote->locks = lock;
26349b2e
NH		 1382 }
1383
aa1dbc98 1384 return lock;
58e60dd2
NH		 1385}
1386
aa1dbc98 1387static int unlock_remote(struct remote_lock *lock)
58e60dd2
NH		 1388{
1389 struct active_request_slot *slot;
baa7b67d 1390 struct slot_results results;
512d632c 1391 struct remote_lock *prev = remote->locks;
58e60dd2
NH		 1392 char *lock_token_header;
1393 struct curl_slist *dav_headers = NULL;
1394 int rc = 0;
1395
26349b2e 1396 lock_token_header = xmalloc(strlen(lock->token) + 31);
58e60dd2 1397 sprintf(lock_token_header, "Lock-Token: <opaquelocktoken:%s>",
26349b2e 1398 lock->token);
58e60dd2
NH		 1399 dav_headers = curl_slist_append(dav_headers, lock_token_header);
1400
1401 slot = get_active_slot();
baa7b67d 1402 slot->results = &results;
58e60dd2 1403 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
75187c9d 1404 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
58e60dd2
NH		 1405 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_UNLOCK);
1406 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1407
1408 if (start_active_slot(slot)) {
1409 run_active_slot(slot);
baa7b67d 1410 if (results.curl_result == CURLE_OK)
58e60dd2
NH		 1411 rc = 1;
1412 else
512d632c 1413 fprintf(stderr, "UNLOCK HTTP error %ld\n",
baa7b67d 1414 results.http_code);
58e60dd2 1415 } else {
512d632c 1416 fprintf(stderr, "Unable to start UNLOCK request\n");
58e60dd2
NH		 1417 }
1418
1419 curl_slist_free_all(dav_headers);
1420 free(lock_token_header);
75187c9d 1421
512d632c
NH		 1422 if (remote->locks == lock) {
1423 remote->locks = lock->next;
1424 } else {
1425 while (prev && prev->next != lock)
1426 prev = prev->next;
1427 if (prev)
1428 prev->next = prev->next->next;
1429 }
1430
1431 if (lock->owner != NULL)
1432 free(lock->owner);
1433 free(lock->url);
1434 free(lock->token);
1435 free(lock);
58e60dd2
NH		 1436
1437 return rc;
1438}
1439
3030baa7
NH		 1440static void remote_ls(const char *path, int flags,
1441 void (*userFunc)(struct remote_ls_ctx *ls),
1442 void *userData);
aa1dbc98 1443
3030baa7
NH		 1444static void process_ls_object(struct remote_ls_ctx *ls)
1445{
1446 unsigned int *parent = (unsigned int *)ls->userData;
1447 char *path = ls->dentry_name;
1448 char *obj_hex;
aa1dbc98 1449
3030baa7
NH		 1450 if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
1451 remote_dir_exists[*parent] = 1;
1452 return;
1453 }
aa1dbc98 1454
3030baa7
NH		 1455 if (strlen(path) != 49)
1456 return;
1457 path += 8;
1458 obj_hex = xmalloc(strlen(path));
1459 strncpy(obj_hex, path, 2);
1460 strcpy(obj_hex + 2, path + 3);
1461 one_remote_object(obj_hex);
1462 free(obj_hex);
1463}
aa1dbc98 1464
3030baa7
NH		 1465static void process_ls_ref(struct remote_ls_ctx *ls)
1466{
1467 if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
1468 fprintf(stderr, " %s\n", ls->dentry_name);
1469 return;
1470 }
aa1dbc98 1471
3030baa7
NH		 1472 if (!(ls->dentry_flags & IS_DIR))
1473 one_remote_ref(ls->dentry_name);
1474}
aa1dbc98 1475
3030baa7
NH		 1476static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
1477{
1478 struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
aa1dbc98 1479
3030baa7
NH		 1480 if (tag_closed) {
1481 if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
1482 if (ls->dentry_flags & IS_DIR) {
1483 if (ls->flags & PROCESS_DIRS) {
1484 ls->userFunc(ls);
1485 }
1486 if (strcmp(ls->dentry_name, ls->path) &&
1487 ls->flags & RECURSIVE) {
1488 remote_ls(ls->dentry_name,
1489 ls->flags,
1490 ls->userFunc,
1491 ls->userData);
1492 }
1493 } else if (ls->flags & PROCESS_FILES) {
1494 ls->userFunc(ls);
aa1dbc98 1495 }
3030baa7
NH		 1496 } else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
1497 ls->dentry_name = xmalloc(strlen(ctx->cdata) -
1498 remote->path_len + 1);
1499 strcpy(ls->dentry_name, ctx->cdata + remote->path_len);
1500 } else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
1501 ls->dentry_flags |= IS_DIR;
aa1dbc98 1502 }
3030baa7
NH		 1503 } else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
1504 if (ls->dentry_name) {
1505 free(ls->dentry_name);
1506 }
1507 ls->dentry_name = NULL;
1508 ls->dentry_flags = 0;
aa1dbc98 1509 }
aa1dbc98
NH		 1510}
1511
3030baa7
NH		 1512static void remote_ls(const char *path, int flags,
1513 void (*userFunc)(struct remote_ls_ctx *ls),
1514 void *userData)
aa1dbc98 1515{
3030baa7 1516 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
aa1dbc98 1517 struct active_request_slot *slot;
baa7b67d 1518 struct slot_results results;
aa1dbc98
NH		 1519 struct buffer in_buffer;
1520 struct buffer out_buffer;
1521 char *in_data;
1522 char *out_data;
1523 XML_Parser parser = XML_ParserCreate(NULL);
1524 enum XML_Status result;
1525 struct curl_slist *dav_headers = NULL;
1526 struct xml_ctx ctx;
3030baa7
NH		 1527 struct remote_ls_ctx ls;
1528
1529 ls.flags = flags;
1530 ls.path = strdup(path);
1531 ls.dentry_name = NULL;
1532 ls.dentry_flags = 0;
1533 ls.userData = userData;
1534 ls.userFunc = userFunc;
aa1dbc98 1535
aa1dbc98
NH		 1536 sprintf(url, "%s%s", remote->url, path);
1537
1538 out_buffer.size = strlen(PROPFIND_ALL_REQUEST);
1539 out_data = xmalloc(out_buffer.size + 1);
1540 snprintf(out_data, out_buffer.size + 1, PROPFIND_ALL_REQUEST);
1541 out_buffer.posn = 0;
1542 out_buffer.buffer = out_data;
1543
1544 in_buffer.size = 4096;
1545 in_data = xmalloc(in_buffer.size);
1546 in_buffer.posn = 0;
1547 in_buffer.buffer = in_data;
1548
1549 dav_headers = curl_slist_append(dav_headers, "Depth: 1");
1550 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
1551
1552 slot = get_active_slot();
baa7b67d 1553 slot->results = &results;
aa1dbc98
NH		 1554 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1555 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1556 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1557 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
1558 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
1559 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
1560 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1561 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1562 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1563
1564 if (start_active_slot(slot)) {
1565 run_active_slot(slot);
baa7b67d 1566 if (results.curl_result == CURLE_OK) {
aa1dbc98
NH		 1567 ctx.name = xcalloc(10, 1);
1568 ctx.len = 0;
1569 ctx.cdata = NULL;
3030baa7
NH		 1570 ctx.userFunc = handle_remote_ls_ctx;
1571 ctx.userData = &ls;
aa1dbc98
NH		 1572 XML_SetUserData(parser, &ctx);
1573 XML_SetElementHandler(parser, xml_start_tag,
1574 xml_end_tag);
1575 XML_SetCharacterDataHandler(parser, xml_cdata);
1576 result = XML_Parse(parser, in_buffer.buffer,
1577 in_buffer.posn, 1);
1578 free(ctx.name);
1579
1580 if (result != XML_STATUS_OK) {
1581 fprintf(stderr, "XML error: %s\n",
1582 XML_ErrorString(
1583 XML_GetErrorCode(parser)));
1584 }
aa1dbc98
NH		 1585 }
1586 } else {
3030baa7 1587 fprintf(stderr, "Unable to start PROPFIND request\n");
aa1dbc98
NH		 1588 }
1589
3030baa7 1590 free(ls.path);
aa1dbc98
NH		 1591 free(url);
1592 free(out_data);
1593 free(in_buffer.buffer);
1594 curl_slist_free_all(dav_headers);
1595}
1596
3030baa7
NH		 1597static void get_remote_object_list(unsigned char parent)
1598{
1599 char path[] = "objects/XX/";
1600 static const char hex[] = "0123456789abcdef";
1601 unsigned int val = parent;
1602
1603 path[8] = hex[val >> 4];
1604 path[9] = hex[val & 0xf];
1605 remote_dir_exists[val] = 0;
1606 remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
1607 process_ls_object, &val);
1608}
1609
acf59575 1610static int locking_available(void)
58e60dd2
NH		 1611{
1612 struct active_request_slot *slot;
baa7b67d 1613 struct slot_results results;
58e60dd2
NH		 1614 struct buffer in_buffer;
1615 struct buffer out_buffer;
1616 char *in_data;
1617 char *out_data;
1618 XML_Parser parser = XML_ParserCreate(NULL);
1619 enum XML_Status result;
58e60dd2 1620 struct curl_slist *dav_headers = NULL;
acf59575
NH		 1621 struct xml_ctx ctx;
1622 int lock_flags = 0;
58e60dd2 1623
aa1dbc98
NH		 1624 out_buffer.size =
1625 strlen(PROPFIND_SUPPORTEDLOCK_REQUEST) +
1626 strlen(remote->url) - 2;
58e60dd2 1627 out_data = xmalloc(out_buffer.size + 1);
aa1dbc98
NH		 1628 snprintf(out_data, out_buffer.size + 1,
1629 PROPFIND_SUPPORTEDLOCK_REQUEST, remote->url);
58e60dd2
NH		 1630 out_buffer.posn = 0;
1631 out_buffer.buffer = out_data;
1632
1633 in_buffer.size = 4096;
1634 in_data = xmalloc(in_buffer.size);
1635 in_buffer.posn = 0;
1636 in_buffer.buffer = in_data;
1637
1638 dav_headers = curl_slist_append(dav_headers, "Depth: 0");
1639 dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
baa7b67d 1640
58e60dd2 1641 slot = get_active_slot();
baa7b67d 1642 slot->results = &results;
58e60dd2
NH		 1643 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1644 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1645 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1646 curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
29508e1e 1647 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
58e60dd2
NH		 1648 curl_easy_setopt(slot->curl, CURLOPT_URL, remote->url);
1649 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1650 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PROPFIND);
1651 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1652
1653 if (start_active_slot(slot)) {
1654 run_active_slot(slot);
baa7b67d 1655 if (results.curl_result == CURLE_OK) {
acf59575
NH		 1656 ctx.name = xcalloc(10, 1);
1657 ctx.len = 0;
1658 ctx.cdata = NULL;
1659 ctx.userFunc = handle_lockprop_ctx;
1660 ctx.userData = &lock_flags;
1661 XML_SetUserData(parser, &ctx);
1662 XML_SetElementHandler(parser, xml_start_tag,
1663 xml_end_tag);
1664 result = XML_Parse(parser, in_buffer.buffer,
1665 in_buffer.posn, 1);
1666 free(ctx.name);
1667
1668 if (result != XML_STATUS_OK) {
1669 fprintf(stderr, "XML error: %s\n",
1670 XML_ErrorString(
1671 XML_GetErrorCode(parser)));
1672 lock_flags = 0;
1673 }
58e60dd2 1674 }
58e60dd2 1675 } else {
acf59575 1676 fprintf(stderr, "Unable to start request\n");
58e60dd2
NH		 1677 }
1678
acf59575
NH		 1679 free(out_data);
1680 free(in_buffer.buffer);
1681 curl_slist_free_all(dav_headers);
1682
1683 return lock_flags;
58e60dd2
NH		 1684}
1685
aa1dbc98
NH		 1686static struct object_list **process_blob(struct blob *blob,
1687 struct object_list **p,
1688 struct name_path *path,
1689 const char *name)
58e60dd2 1690{
aa1dbc98 1691 struct object *obj = &blob->object;
58e60dd2 1692
aa1dbc98
NH		 1693 obj->flags |= LOCAL;
1694
1695 if (obj->flags & (UNINTERESTING | SEEN))
1696 return p;
1697
1698 obj->flags |= SEEN;
1699 return add_object(obj, p, path, name);
1700}
1701
1702static struct object_list **process_tree(struct tree *tree,
1703 struct object_list **p,
1704 struct name_path *path,
1705 const char *name)
1706{
1707 struct object *obj = &tree->object;
1708 struct tree_entry_list *entry;
1709 struct name_path me;
1710
1711 obj->flags |= LOCAL;
1712
1713 if (obj->flags & (UNINTERESTING | SEEN))
1714 return p;
1715 if (parse_tree(tree) < 0)
1716 die("bad tree object %s", sha1_to_hex(obj->sha1));
1717
1718 obj->flags |= SEEN;
1719 p = add_object(obj, p, NULL, name);
1720 me.up = path;
1721 me.elem = name;
1722 me.elem_len = strlen(name);
1723 entry = tree->entries;
1724 tree->entries = NULL;
1725 while (entry) {
1726 struct tree_entry_list *next = entry->next;
1727 if (entry->directory)
1728 p = process_tree(entry->item.tree, p, &me, entry->name);
1729 else
1730 p = process_blob(entry->item.blob, p, &me, entry->name);
1731 free(entry);
1732 entry = next;
58e60dd2 1733 }
aa1dbc98 1734 return p;
58e60dd2
NH		 1735}
1736
aa1dbc98 1737static void get_delta(struct rev_info *revs, struct remote_lock *lock)
58e60dd2
NH		 1738{
1739 struct commit *commit;
aa1dbc98 1740 struct object_list **p = &objects, *pending;
58e60dd2 1741
aa1dbc98
NH		 1742 while ((commit = get_revision(revs)) != NULL) {
1743 p = process_tree(commit->tree, p, NULL, "");
1744 commit->object.flags |= LOCAL;
1745 if (!(commit->object.flags & UNINTERESTING))
197e8951 1746 add_send_request(&commit->object, lock);
aa1dbc98 1747 }
58e60dd2 1748
aa1dbc98
NH		 1749 for (pending = revs->pending_objects; pending; pending = pending->next) {
1750 struct object *obj = pending->item;
1751 const char *name = pending->name;
58e60dd2 1752
aa1dbc98
NH		 1753 if (obj->flags & (UNINTERESTING | SEEN))
1754 continue;
1755 if (obj->type == tag_type) {
1756 obj->flags |= SEEN;
1757 p = add_object(obj, p, NULL, name);
1758 continue;
58e60dd2 1759 }
aa1dbc98
NH		 1760 if (obj->type == tree_type) {
1761 p = process_tree((struct tree *)obj, p, NULL, name);
1762 continue;
58e60dd2 1763 }
aa1dbc98
NH		 1764 if (obj->type == blob_type) {
1765 p = process_blob((struct blob *)obj, p, NULL, name);
1766 continue;
58e60dd2 1767 }
aa1dbc98
NH		 1768 die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
1769 }
1770
1771 while (objects) {
1772 if (!(objects->item->flags & UNINTERESTING))
197e8951 1773 add_send_request(objects->item, lock);
aa1dbc98 1774 objects = objects->next;
58e60dd2
NH		 1775 }
1776}
1777
aa1dbc98 1778static int update_remote(unsigned char *sha1, struct remote_lock *lock)
58e60dd2
NH		 1779{
1780 struct active_request_slot *slot;
baa7b67d 1781 struct slot_results results;
58e60dd2
NH		 1782 char *out_data;
1783 char *if_header;
1784 struct buffer out_buffer;
1785 struct curl_slist *dav_headers = NULL;
1786 int i;
1787
26349b2e
NH		 1788 if_header = xmalloc(strlen(lock->token) + 25);
1789 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
58e60dd2
NH		 1790 dav_headers = curl_slist_append(dav_headers, if_header);
1791
1792 out_buffer.size = 41;
1793 out_data = xmalloc(out_buffer.size + 1);
1794 i = snprintf(out_data, out_buffer.size + 1, "%s\n", sha1_to_hex(sha1));
1795 if (i != out_buffer.size) {
1796 fprintf(stderr, "Unable to initialize PUT request body\n");
1797 return 0;
1798 }
1799 out_buffer.posn = 0;
1800 out_buffer.buffer = out_data;
1801
1802 slot = get_active_slot();
baa7b67d 1803 slot->results = &results;
58e60dd2
NH		 1804 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &out_buffer);
1805 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, out_buffer.size);
1806 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
1807 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
1808 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
1809 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
1810 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
1811 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
75187c9d 1812 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
58e60dd2
NH		 1813
1814 if (start_active_slot(slot)) {
1815 run_active_slot(slot);
1816 free(out_data);
1817 free(if_header);
baa7b67d 1818 if (results.curl_result != CURLE_OK) {
58e60dd2
NH		 1819 fprintf(stderr,
1820 "PUT error: curl result=%d, HTTP code=%ld\n",
baa7b67d 1821 results.curl_result, results.http_code);
58e60dd2
NH		 1822 /* We should attempt recovery? */
1823 return 0;
1824 }
1825 } else {
1826 free(out_data);
1827 free(if_header);
58e60dd2
NH		 1828 fprintf(stderr, "Unable to start PUT request\n");
1829 return 0;
1830 }
1831
1832 return 1;
1833}
1834
aa1dbc98
NH		 1835static struct ref *local_refs, **local_tail;
1836static struct ref *remote_refs, **remote_tail;
1837
1838static int one_local_ref(const char *refname, const unsigned char *sha1)
1839{
1840 struct ref *ref;
1841 int len = strlen(refname) + 1;
1842 ref = xcalloc(1, sizeof(*ref) + len);
1843 memcpy(ref->new_sha1, sha1, 20);
1844 memcpy(ref->name, refname, len);
1845 *local_tail = ref;
1846 local_tail = &ref->next;
1847 return 0;
1848}
1849
1850static void one_remote_ref(char *refname)
1851{
1852 struct ref *ref;
1853 unsigned char remote_sha1[20];
197e8951 1854 struct object *obj;
aa1dbc98
NH		 1855
1856 if (fetch_ref(refname, remote_sha1) != 0) {
1857 fprintf(stderr,
1858 "Unable to fetch ref %s from %s\n",
1859 refname, remote->url);
1860 return;
1861 }
1862
197e8951
NH		 1863 /*
1864 * Fetch a copy of the object if it doesn't exist locally - it
1865 * may be required for updating server info later.
1866 */
1867 if (remote->can_update_info_refs && !has_sha1_file(remote_sha1)) {
1868 obj = lookup_unknown_object(remote_sha1);
1869 if (obj) {
1870 fprintf(stderr, " fetch %s for %s\n",
1871 sha1_to_hex(remote_sha1), refname);
1872 add_fetch_request(obj);
1873 }
1874 }
1875
aa1dbc98
NH		 1876 int len = strlen(refname) + 1;
1877 ref = xcalloc(1, sizeof(*ref) + len);
1878 memcpy(ref->old_sha1, remote_sha1, 20);
1879 memcpy(ref->name, refname, len);
1880 *remote_tail = ref;
1881 remote_tail = &ref->next;
1882}
1883
1884static void get_local_heads(void)
1885{
1886 local_tail = &local_refs;
1887 for_each_ref(one_local_ref);
1888}
1889
1890static void get_dav_remote_heads(void)
1891{
1892 remote_tail = &remote_refs;
3030baa7 1893 remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
aa1dbc98
NH		 1894}
1895
1896static int is_zero_sha1(const unsigned char *sha1)
1897{
1898 int i;
1899
1900 for (i = 0; i < 20; i++) {
1901 if (*sha1++)
1902 return 0;
1903 }
1904 return 1;
1905}
1906
1907static void unmark_and_free(struct commit_list *list, unsigned int mark)
1908{
1909 while (list) {
1910 struct commit_list *temp = list;
1911 temp->item->object.flags &= ~mark;
1912 list = temp->next;
1913 free(temp);
1914 }
1915}
1916
1917static int ref_newer(const unsigned char *new_sha1,
1918 const unsigned char *old_sha1)
1919{
1920 struct object *o;
1921 struct commit *old, *new;
1922 struct commit_list *list, *used;
1923 int found = 0;
1924
1925 /* Both new and old must be commit-ish and new is descendant of
1926 * old. Otherwise we require --force.
1927 */
1928 o = deref_tag(parse_object(old_sha1), NULL, 0);
1929 if (!o || o->type != commit_type)
1930 return 0;
1931 old = (struct commit *) o;
1932
1933 o = deref_tag(parse_object(new_sha1), NULL, 0);
1934 if (!o || o->type != commit_type)
1935 return 0;
1936 new = (struct commit *) o;
1937
1938 if (parse_commit(new) < 0)
1939 return 0;
1940
1941 used = list = NULL;
1942 commit_list_insert(new, &list);
1943 while (list) {
1944 new = pop_most_recent_commit(&list, TMP_MARK);
1945 commit_list_insert(new, &used);
1946 if (new == old) {
1947 found = 1;
1948 break;
1949 }
1950 }
1951 unmark_and_free(list, TMP_MARK);
1952 unmark_and_free(used, TMP_MARK);
1953 return found;
1954}
1955
1956static void mark_edge_parents_uninteresting(struct commit *commit)
1957{
1958 struct commit_list *parents;
1959
1960 for (parents = commit->parents; parents; parents = parents->next) {
1961 struct commit *parent = parents->item;
1962 if (!(parent->object.flags & UNINTERESTING))
1963 continue;
1964 mark_tree_uninteresting(parent->tree);
1965 }
1966}
1967
1968static void mark_edges_uninteresting(struct commit_list *list)
1969{
1970 for ( ; list; list = list->next) {
1971 struct commit *commit = list->item;
1972
1973 if (commit->object.flags & UNINTERESTING) {
1974 mark_tree_uninteresting(commit->tree);
1975 continue;
1976 }
1977 mark_edge_parents_uninteresting(commit);
1978 }
1979}
1980
197e8951
NH		 1981static void add_remote_info_ref(struct remote_ls_ctx *ls)
1982{
1983 struct buffer *buf = (struct buffer *)ls->userData;
1984 unsigned char remote_sha1[20];
1985 struct object *o;
1986 int len;
1987 char *ref_info;
1988
1989 if (fetch_ref(ls->dentry_name, remote_sha1) != 0) {
1990 fprintf(stderr,
1991 "Unable to fetch ref %s from %s\n",
1992 ls->dentry_name, remote->url);
1993 aborted = 1;
1994 return;
1995 }
1996
1997 o = parse_object(remote_sha1);
1998 if (!o) {
1999 fprintf(stderr,
2000 "Unable to parse object %s for remote ref %s\n",
2001 sha1_to_hex(remote_sha1), ls->dentry_name);
2002 aborted = 1;
2003 return;
2004 }
2005
2006 len = strlen(ls->dentry_name) + 42;
2007 ref_info = xcalloc(len + 1, 1);
2008 sprintf(ref_info, "%s %s\n",
2009 sha1_to_hex(remote_sha1), ls->dentry_name);
2010 fwrite_buffer(ref_info, 1, len, buf);
2011 free(ref_info);
2012
2013 if (o->type == tag_type) {
2014 o = deref_tag(o, ls->dentry_name, 0);
2015 if (o) {
2016 len = strlen(ls->dentry_name) + 45;
2017 ref_info = xcalloc(len + 1, 1);
2018 sprintf(ref_info, "%s %s^{}\n",
2019 sha1_to_hex(o->sha1), ls->dentry_name);
2020 fwrite_buffer(ref_info, 1, len, buf);
2021 free(ref_info);
2022 }
2023 }
2024}
2025
2026static void update_remote_info_refs(struct remote_lock *lock)
2027{
2028 struct buffer buffer;
2029 struct active_request_slot *slot;
2030 struct slot_results results;
2031 char *if_header;
2032 struct curl_slist *dav_headers = NULL;
2033
2034 buffer.buffer = xmalloc(4096);
2035 memset(buffer.buffer, 0, 4096);
2036 buffer.size = 4096;
2037 buffer.posn = 0;
2038 remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
2039 add_remote_info_ref, &buffer);
2040 if (!aborted) {
2041 if_header = xmalloc(strlen(lock->token) + 25);
2042 sprintf(if_header, "If: (<opaquelocktoken:%s>)", lock->token);
2043 dav_headers = curl_slist_append(dav_headers, if_header);
2044
2045 slot = get_active_slot();
2046 slot->results = &results;
2047 curl_easy_setopt(slot->curl, CURLOPT_INFILE, &buffer);
2048 curl_easy_setopt(slot->curl, CURLOPT_INFILESIZE, buffer.posn);
2049 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, fread_buffer);
2050 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_null);
2051 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, DAV_PUT);
2052 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
2053 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 1);
2054 curl_easy_setopt(slot->curl, CURLOPT_PUT, 1);
2055 curl_easy_setopt(slot->curl, CURLOPT_URL, lock->url);
2056
2057 buffer.posn = 0;
2058
2059 if (start_active_slot(slot)) {
2060 run_active_slot(slot);
2061 if (results.curl_result != CURLE_OK) {
2062 fprintf(stderr,
2063 "PUT error: curl result=%d, HTTP code=%ld\n",
2064 results.curl_result, results.http_code);
2065 }
2066 }
2067 free(if_header);
2068 }
2069 free(buffer.buffer);
2070}
2071
2072static int remote_exists(const char *path)
2073{
2074 char *url = xmalloc(strlen(remote->url) + strlen(path) + 1);
2075 struct active_request_slot *slot;
2076 struct slot_results results;
2077
2078 sprintf(url, "%s%s", remote->url, path);
2079
2080 slot = get_active_slot();
2081 slot->results = &results;
2082 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
2083 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
2084
2085 if (start_active_slot(slot)) {
2086 run_active_slot(slot);
2087 if (results.http_code == 404)
2088 return 0;
2089 else if (results.curl_result == CURLE_OK)
2090 return 1;
2091 else
2092 fprintf(stderr, "HEAD HTTP error %ld\n", results.http_code);
2093 } else {
2094 fprintf(stderr, "Unable to start HEAD request\n");
2095 }
2096
2097 return -1;
2098}
2099
58e60dd2
NH		 2100int main(int argc, char **argv)
2101{
58e60dd2
NH		 2102 struct transfer_request *request;
2103 struct transfer_request *next_request;
2104 int nr_refspec = 0;
2105 char **refspec = NULL;
512d632c 2106 struct remote_lock *ref_lock = NULL;
197e8951 2107 struct remote_lock *info_ref_lock = NULL;
aa1dbc98 2108 struct rev_info revs;
58e60dd2
NH		 2109 int rc = 0;
2110 int i;
2111
5a327713 2112 setup_git_directory();
58e60dd2
NH		 2113 setup_ident();
2114
512d632c 2115 remote = xcalloc(sizeof(*remote), 1);
58e60dd2
NH		 2116
2117 argv++;
2118 for (i = 1; i < argc; i++, argv++) {
2119 char *arg = *argv;
2120
2121 if (*arg == '-') {
aa1dbc98 2122 if (!strcmp(arg, "--all")) {
58e60dd2
NH		 2123 push_all = 1;
2124 continue;
2125 }
2126 if (!strcmp(arg, "--force")) {
2127 force_all = 1;
2128 continue;
2129 }
2130 if (!strcmp(arg, "--verbose")) {
2131 push_verbosely = 1;
2132 continue;
2133 }
2134 usage(http_push_usage);
2135 }
2136 if (!remote->url) {
2137 remote->url = arg;
aa1dbc98
NH		 2138 char *path = strstr(arg, "//");
2139 if (path) {
2140 path = index(path+2, '/');
2141 if (path)
2142 remote->path_len = strlen(path);
2143 }
58e60dd2
NH		 2144 continue;
2145 }
2146 refspec = argv;
2147 nr_refspec = argc - i;
2148 break;
2149 }
2150
3e9fabc8
NH		 2151 if (!remote->url)
2152 usage(http_push_usage);
2153
aa1dbc98 2154 memset(remote_dir_exists, -1, 256);
0dd276b8 2155
29508e1e 2156 http_init();
58e60dd2
NH		 2157
2158 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
2159 default_headers = curl_slist_append(default_headers, "Range:");
2160 default_headers = curl_slist_append(default_headers, "Destination:");
2161 default_headers = curl_slist_append(default_headers, "If:");
2162 default_headers = curl_slist_append(default_headers,
2163 "Pragma: no-cache");
2164
58e60dd2 2165 /* Verify DAV compliance/lock support */
acf59575 2166 if (!locking_available()) {
58e60dd2
NH		 2167 fprintf(stderr, "Error: no DAV locking support on remote repo %s\n", remote->url);
2168 rc = 1;
2169 goto cleanup;
2170 }
2171
197e8951
NH		 2172 /* Check whether the remote has server info files */
2173 remote->can_update_info_refs = 0;
2174 remote->has_info_refs = remote_exists("info/refs");
2175 remote->has_info_packs = remote_exists("objects/info/packs");
2176 if (remote->has_info_refs) {
2177 info_ref_lock = lock_remote("info/refs", LOCK_TIME);
2178 if (info_ref_lock)
2179 remote->can_update_info_refs = 1;
2180 }
2181 if (remote->has_info_packs)
2182 fetch_indices();
2183
aa1dbc98
NH		 2184 /* Get a list of all local and remote heads to validate refspecs */
2185 get_local_heads();
2186 fprintf(stderr, "Fetching remote heads...\n");
2187 get_dav_remote_heads();
2188
2189 /* match them up */
2190 if (!remote_tail)
2191 remote_tail = &remote_refs;
2192 if (match_refs(local_refs, remote_refs, &remote_tail,
2193 nr_refspec, refspec, push_all))
2194 return -1;
2195 if (!remote_refs) {
2196 fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
2197 return 0;
2198 }
2199
2200 int ret = 0;
2201 int new_refs = 0;
2202 struct ref *ref;
2203 for (ref = remote_refs; ref; ref = ref->next) {
2204 char old_hex[60], *new_hex;
2205 if (!ref->peer_ref)
2206 continue;
2207 if (!memcmp(ref->old_sha1, ref->peer_ref->new_sha1, 20)) {
2208 if (push_verbosely || 1)
2209 fprintf(stderr, "'%s': up-to-date\n", ref->name);
2210 continue;
2211 }
2212
2213 if (!force_all &&
2214 !is_zero_sha1(ref->old_sha1) &&
2215 !ref->force) {
2216 if (!has_sha1_file(ref->old_sha1) ||
2217 !ref_newer(ref->peer_ref->new_sha1,
2218 ref->old_sha1)) {
2219 /* We do not have the remote ref, or
2220 * we know that the remote ref is not
2221 * an ancestor of what we are trying to
2222 * push. Either way this can be losing
2223 * commits at the remote end and likely
2224 * we were not up to date to begin with.
2225 */
2226 error("remote '%s' is not a strict "
2227 "subset of local ref '%s'. "
2228 "maybe you are not up-to-date and "
2229 "need to pull first?",
2230 ref->name,
2231 ref->peer_ref->name);
2232 ret = -2;
2233 continue;
2234 }
58e60dd2 2235 }
aa1dbc98
NH		 2236 memcpy(ref->new_sha1, ref->peer_ref->new_sha1, 20);
2237 if (is_zero_sha1(ref->new_sha1)) {
2238 error("cannot happen anymore");
2239 ret = -3;
2240 continue;
58e60dd2 2241 }
aa1dbc98
NH		 2242 new_refs++;
2243 strcpy(old_hex, sha1_to_hex(ref->old_sha1));
2244 new_hex = sha1_to_hex(ref->new_sha1);
2245
2246 fprintf(stderr, "updating '%s'", ref->name);
2247 if (strcmp(ref->name, ref->peer_ref->name))
2248 fprintf(stderr, " using '%s'", ref->peer_ref->name);
2249 fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
2250
58e60dd2
NH		 2251
2252 /* Lock remote branch ref */
aa1dbc98
NH		 2253 ref_lock = lock_remote(ref->name, LOCK_TIME);
2254 if (ref_lock == NULL) {
58e60dd2 2255 fprintf(stderr, "Unable to lock remote branch %s\n",
aa1dbc98 2256 ref->name);
58e60dd2
NH		 2257 rc = 1;
2258 continue;
2259 }
2260
aa1dbc98 2261 /* Set up revision info for this refspec */
5241bfe6
NH		 2262 const char *commit_argv[4];
2263 int commit_argc = 3;
aa1dbc98
NH		 2264 char *new_sha1_hex = strdup(sha1_to_hex(ref->new_sha1));
2265 char *old_sha1_hex = NULL;
5241bfe6
NH		 2266 commit_argv[1] = "--objects";
2267 commit_argv[2] = new_sha1_hex;
aa1dbc98
NH		 2268 if (!push_all && !is_zero_sha1(ref->old_sha1)) {
2269 old_sha1_hex = xmalloc(42);
2270 sprintf(old_sha1_hex, "^%s",
2271 sha1_to_hex(ref->old_sha1));
5241bfe6 2272 commit_argv[3] = old_sha1_hex;
aa1dbc98 2273 commit_argc++;
58e60dd2 2274 }
aa1dbc98 2275 setup_revisions(commit_argc, commit_argv, &revs, NULL);
aa1dbc98
NH		 2276 free(new_sha1_hex);
2277 if (old_sha1_hex) {
2278 free(old_sha1_hex);
2279 commit_argv[1] = NULL;
58e60dd2
NH		 2280 }
2281
aa1dbc98 2282 /* Generate a list of objects that need to be pushed */
58e60dd2 2283 pushing = 0;
aa1dbc98
NH		 2284 prepare_revision_walk(&revs);
2285 mark_edges_uninteresting(revs.commits);
aa1dbc98 2286 get_delta(&revs, ref_lock);
29508e1e 2287 finish_all_active_slots();
58e60dd2
NH		 2288
2289 /* Push missing objects to remote, this would be a
2290 convenient time to pack them first if appropriate. */
2291 pushing = 1;
29508e1e
NH		 2292 fill_active_slots();
2293 finish_all_active_slots();
58e60dd2
NH		 2294
2295 /* Update the remote branch if all went well */
aa1dbc98
NH		 2296 if (aborted || !update_remote(ref->new_sha1, ref_lock)) {
2297 rc = 1;
2298 goto unlock;
58e60dd2
NH		 2299 }
2300
2301 unlock:
aa1dbc98
NH		 2302 if (!rc)
2303 fprintf(stderr, " done\n");
2304 unlock_remote(ref_lock);
512d632c 2305 check_locks();
58e60dd2
NH		 2306 }
2307
197e8951
NH		 2308 /* Update remote server info if appropriate */
2309 if (remote->has_info_refs && new_refs) {
2310 if (info_ref_lock && remote->can_update_info_refs) {
2311 fprintf(stderr, "Updating remote server info\n");
2312 update_remote_info_refs(info_ref_lock);
2313 } else {
2314 fprintf(stderr, "Unable to update server info\n");
2315 }
2316 }
2317 if (info_ref_lock)
2318 unlock_remote(info_ref_lock);
2319
58e60dd2
NH		 2320 cleanup:
2321 free(remote);
2322
2323 curl_slist_free_all(no_pragma_header);
2324 curl_slist_free_all(default_headers);
2325
29508e1e 2326 http_cleanup();
58e60dd2
NH		 2327
2328 request = request_queue_head;
2329 while (request != NULL) {
2330 next_request = request->next;
2331 release_request(request);
58e60dd2
NH		 2332 request = next_request;
2333 }
2334
58e60dd2
NH		 2335 return rc;
2336}
Unnamed repository; edit this file 'description' to name the repository.