Update draft release notes for 1.7.8.1
[git/git.git] / remote-curl.c
CommitLineData
a2d725b7
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1#include "cache.h"
2#include "remote.h"
3#include "strbuf.h"
4#include "walker.h"
5#include "http.h"
d01a8e32 6#include "exec_cmd.h"
ae4efe19 7#include "run-command.h"
97cc7bc4 8#include "pkt-line.h"
de1a2fdd 9#include "sideband.h"
a2d725b7 10
37a8768f 11static struct remote *remote;
d8fab072 12static const char *url; /* always ends with a trailing slash */
37a8768f 13
ef08ef9e
SP
14struct options {
15 int verbosity;
16 unsigned long depth;
17 unsigned progress : 1,
ae4efe19 18 followtags : 1,
de1a2fdd
SP
19 dry_run : 1,
20 thin : 1;
ef08ef9e
SP
21};
22static struct options options;
23
ef08ef9e
SP
24static int set_option(const char *name, const char *value)
25{
26 if (!strcmp(name, "verbosity")) {
27 char *end;
28 int v = strtol(value, &end, 10);
29 if (value == end || *end)
30 return -1;
31 options.verbosity = v;
32 return 0;
33 }
34 else if (!strcmp(name, "progress")) {
35 if (!strcmp(value, "true"))
36 options.progress = 1;
37 else if (!strcmp(value, "false"))
38 options.progress = 0;
39 else
40 return -1;
249b2004 41 return 0;
ef08ef9e
SP
42 }
43 else if (!strcmp(name, "depth")) {
44 char *end;
45 unsigned long v = strtoul(value, &end, 10);
46 if (value == end || *end)
47 return -1;
48 options.depth = v;
249b2004 49 return 0;
ef08ef9e
SP
50 }
51 else if (!strcmp(name, "followtags")) {
52 if (!strcmp(value, "true"))
53 options.followtags = 1;
54 else if (!strcmp(value, "false"))
55 options.followtags = 0;
56 else
57 return -1;
249b2004 58 return 0;
ef08ef9e 59 }
ae4efe19
SP
60 else if (!strcmp(name, "dry-run")) {
61 if (!strcmp(value, "true"))
62 options.dry_run = 1;
63 else if (!strcmp(value, "false"))
64 options.dry_run = 0;
65 else
66 return -1;
67 return 0;
68 }
ef08ef9e
SP
69 else {
70 return 1 /* unsupported */;
71 }
72}
73
97cc7bc4
SP
74struct discovery {
75 const char *service;
76 char *buf_alloc;
77 char *buf;
78 size_t len;
79 unsigned proto_git : 1;
80};
81static struct discovery *last_discovery;
82
83static void free_discovery(struct discovery *d)
84{
85 if (d) {
86 if (d == last_discovery)
87 last_discovery = NULL;
88 free(d->buf_alloc);
89 free(d);
90 }
91}
92
93static struct discovery* discover_refs(const char *service)
a2d725b7
DB
94{
95 struct strbuf buffer = STRBUF_INIT;
97cc7bc4 96 struct discovery *last = last_discovery;
a2d725b7 97 char *refs_url;
703e6e76 98 int http_ret, is_http = 0, proto_git_candidate = 1;
a2d725b7 99
97cc7bc4
SP
100 if (last && !strcmp(service, last->service))
101 return last;
102 free_discovery(last);
a2d725b7 103
d8fab072 104 strbuf_addf(&buffer, "%sinfo/refs", url);
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SP
105 if (!prefixcmp(url, "http://") || !prefixcmp(url, "https://")) {
106 is_http = 1;
107 if (!strchr(url, '?'))
108 strbuf_addch(&buffer, '?');
109 else
110 strbuf_addch(&buffer, '&');
111 strbuf_addf(&buffer, "service=%s", service);
112 }
113 refs_url = strbuf_detach(&buffer, NULL);
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DB
114
115 http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
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TRC
116
117 /* try again with "plain" url (no ? or & appended) */
28d0c101 118 if (http_ret != HTTP_OK && http_ret != HTTP_NOAUTH) {
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119 free(refs_url);
120 strbuf_reset(&buffer);
121
122 proto_git_candidate = 0;
d8fab072 123 strbuf_addf(&buffer, "%sinfo/refs", url);
703e6e76
TRC
124 refs_url = strbuf_detach(&buffer, NULL);
125
126 http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
127 }
128
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DB
129 switch (http_ret) {
130 case HTTP_OK:
131 break;
132 case HTTP_MISSING_TARGET:
133 die("%s not found: did you run git update-server-info on the"
134 " server?", refs_url);
42653c09
SC
135 case HTTP_NOAUTH:
136 die("Authentication failed");
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DB
137 default:
138 http_error(refs_url, http_ret);
139 die("HTTP request failed");
140 }
141
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SP
142 last= xcalloc(1, sizeof(*last_discovery));
143 last->service = service;
144 last->buf_alloc = strbuf_detach(&buffer, &last->len);
145 last->buf = last->buf_alloc;
146
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TRC
147 if (is_http && proto_git_candidate
148 && 5 <= last->len && last->buf[4] == '#') {
97cc7bc4
SP
149 /* smart HTTP response; validate that the service
150 * pkt-line matches our request.
151 */
152 struct strbuf exp = STRBUF_INIT;
153
154 if (packet_get_line(&buffer, &last->buf, &last->len) <= 0)
155 die("%s has invalid packet header", refs_url);
156 if (buffer.len && buffer.buf[buffer.len - 1] == '\n')
157 strbuf_setlen(&buffer, buffer.len - 1);
158
159 strbuf_addf(&exp, "# service=%s", service);
160 if (strbuf_cmp(&exp, &buffer))
161 die("invalid server response; got '%s'", buffer.buf);
162 strbuf_release(&exp);
163
164 /* The header can include additional metadata lines, up
165 * until a packet flush marker. Ignore these now, but
166 * in the future we might start to scan them.
167 */
168 strbuf_reset(&buffer);
169 while (packet_get_line(&buffer, &last->buf, &last->len) > 0)
170 strbuf_reset(&buffer);
171
172 last->proto_git = 1;
173 }
174
175 free(refs_url);
176 strbuf_release(&buffer);
177 last_discovery = last;
178 return last;
179}
180
ae6a5609 181static int write_discovery(int in, int out, void *data)
97cc7bc4
SP
182{
183 struct discovery *heads = data;
184 int err = 0;
ae6a5609 185 if (write_in_full(out, heads->buf, heads->len) != heads->len)
97cc7bc4 186 err = 1;
ae6a5609 187 close(out);
97cc7bc4
SP
188 return err;
189}
190
191static struct ref *parse_git_refs(struct discovery *heads)
192{
193 struct ref *list = NULL;
194 struct async async;
195
196 memset(&async, 0, sizeof(async));
197 async.proc = write_discovery;
198 async.data = heads;
ae6a5609 199 async.out = -1;
97cc7bc4
SP
200
201 if (start_async(&async))
202 die("cannot start thread to parse advertised refs");
203 get_remote_heads(async.out, &list, 0, NULL, 0, NULL);
204 close(async.out);
205 if (finish_async(&async))
206 die("ref parsing thread failed");
207 return list;
208}
209
210static struct ref *parse_info_refs(struct discovery *heads)
211{
212 char *data, *start, *mid;
213 char *ref_name;
214 int i = 0;
215
216 struct ref *refs = NULL;
217 struct ref *ref = NULL;
218 struct ref *last_ref = NULL;
219
220 data = heads->buf;
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DB
221 start = NULL;
222 mid = data;
97cc7bc4 223 while (i < heads->len) {
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DB
224 if (!start) {
225 start = &data[i];
226 }
227 if (data[i] == '\t')
228 mid = &data[i];
229 if (data[i] == '\n') {
6e8e67f3
JP
230 if (mid - start != 40)
231 die("%sinfo/refs not valid: is this a git repository?", url);
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DB
232 data[i] = 0;
233 ref_name = mid + 1;
234 ref = xmalloc(sizeof(struct ref) +
235 strlen(ref_name) + 1);
236 memset(ref, 0, sizeof(struct ref));
237 strcpy(ref->name, ref_name);
238 get_sha1_hex(start, ref->old_sha1);
239 if (!refs)
240 refs = ref;
241 if (last_ref)
242 last_ref->next = ref;
243 last_ref = ref;
244 start = NULL;
245 }
246 i++;
247 }
248
a2d725b7 249 ref = alloc_ref("HEAD");
aec49756 250 if (!http_fetch_ref(url, ref) &&
a2d725b7
DB
251 !resolve_remote_symref(ref, refs)) {
252 ref->next = refs;
253 refs = ref;
254 } else {
255 free(ref);
256 }
257
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DB
258 return refs;
259}
260
97cc7bc4
SP
261static struct ref *get_refs(int for_push)
262{
263 struct discovery *heads;
264
265 if (for_push)
266 heads = discover_refs("git-receive-pack");
267 else
268 heads = discover_refs("git-upload-pack");
269
270 if (heads->proto_git)
271 return parse_git_refs(heads);
272 return parse_info_refs(heads);
273}
274
ae4efe19
SP
275static void output_refs(struct ref *refs)
276{
277 struct ref *posn;
278 for (posn = refs; posn; posn = posn->next) {
279 if (posn->symref)
280 printf("@%s %s\n", posn->symref, posn->name);
281 else
282 printf("%s %s\n", sha1_to_hex(posn->old_sha1), posn->name);
283 }
284 printf("\n");
285 fflush(stdout);
286 free_refs(refs);
287}
288
de1a2fdd
SP
289struct rpc_state {
290 const char *service_name;
291 const char **argv;
292 char *service_url;
293 char *hdr_content_type;
294 char *hdr_accept;
295 char *buf;
296 size_t alloc;
297 size_t len;
298 size_t pos;
299 int in;
300 int out;
301 struct strbuf result;
b8538603 302 unsigned gzip_request : 1;
6c81a990 303 unsigned initial_buffer : 1;
de1a2fdd
SP
304};
305
306static size_t rpc_out(void *ptr, size_t eltsize,
307 size_t nmemb, void *buffer_)
308{
309 size_t max = eltsize * nmemb;
310 struct rpc_state *rpc = buffer_;
311 size_t avail = rpc->len - rpc->pos;
312
313 if (!avail) {
6c81a990 314 rpc->initial_buffer = 0;
de1a2fdd
SP
315 avail = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
316 if (!avail)
317 return 0;
318 rpc->pos = 0;
319 rpc->len = avail;
320 }
321
48310608 322 if (max < avail)
de1a2fdd
SP
323 avail = max;
324 memcpy(ptr, rpc->buf + rpc->pos, avail);
325 rpc->pos += avail;
326 return avail;
327}
328
6c81a990 329#ifndef NO_CURL_IOCTL
5092d3ec 330static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
6c81a990
MS
331{
332 struct rpc_state *rpc = clientp;
333
334 switch (cmd) {
335 case CURLIOCMD_NOP:
336 return CURLIOE_OK;
337
338 case CURLIOCMD_RESTARTREAD:
339 if (rpc->initial_buffer) {
340 rpc->pos = 0;
341 return CURLIOE_OK;
342 }
343 fprintf(stderr, "Unable to rewind rpc post data - try increasing http.postBuffer\n");
344 return CURLIOE_FAILRESTART;
345
346 default:
347 return CURLIOE_UNKNOWNCMD;
348 }
349}
350#endif
351
a04ff3ec 352static size_t rpc_in(char *ptr, size_t eltsize,
de1a2fdd
SP
353 size_t nmemb, void *buffer_)
354{
355 size_t size = eltsize * nmemb;
356 struct rpc_state *rpc = buffer_;
357 write_or_die(rpc->in, ptr, size);
358 return size;
359}
360
206b099d
SP
361static int run_slot(struct active_request_slot *slot)
362{
363 int err = 0;
364 struct slot_results results;
365
366 slot->results = &results;
367 slot->curl_result = curl_easy_perform(slot->curl);
368 finish_active_slot(slot);
369
370 if (results.curl_result != CURLE_OK) {
371 err |= error("RPC failed; result=%d, HTTP code = %ld",
372 results.curl_result, results.http_code);
373 }
374
375 return err;
376}
377
378static int probe_rpc(struct rpc_state *rpc)
379{
380 struct active_request_slot *slot;
381 struct curl_slist *headers = NULL;
382 struct strbuf buf = STRBUF_INIT;
383 int err;
384
385 slot = get_active_slot();
386
387 headers = curl_slist_append(headers, rpc->hdr_content_type);
388 headers = curl_slist_append(headers, rpc->hdr_accept);
389
390 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
391 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
392 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
393 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
394 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
395 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
396 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
397 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
398 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
399
400 err = run_slot(slot);
401
402 curl_slist_free_all(headers);
403 strbuf_release(&buf);
404 return err;
405}
406
de1a2fdd
SP
407static int post_rpc(struct rpc_state *rpc)
408{
409 struct active_request_slot *slot;
de1a2fdd 410 struct curl_slist *headers = NULL;
b8538603
SP
411 int use_gzip = rpc->gzip_request;
412 char *gzip_body = NULL;
206b099d 413 int err, large_request = 0;
de1a2fdd
SP
414
415 /* Try to load the entire request, if we can fit it into the
416 * allocated buffer space we can use HTTP/1.0 and avoid the
417 * chunked encoding mess.
418 */
419 while (1) {
420 size_t left = rpc->alloc - rpc->len;
421 char *buf = rpc->buf + rpc->len;
422 int n;
423
424 if (left < LARGE_PACKET_MAX) {
425 large_request = 1;
b8538603 426 use_gzip = 0;
de1a2fdd
SP
427 break;
428 }
429
430 n = packet_read_line(rpc->out, buf, left);
431 if (!n)
432 break;
433 rpc->len += n;
434 }
435
206b099d
SP
436 if (large_request) {
437 err = probe_rpc(rpc);
438 if (err)
439 return err;
440 }
441
de1a2fdd 442 slot = get_active_slot();
de1a2fdd 443
de1a2fdd 444 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
d21f9794 445 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
de1a2fdd 446 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
b8538603 447 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
de1a2fdd
SP
448
449 headers = curl_slist_append(headers, rpc->hdr_content_type);
450 headers = curl_slist_append(headers, rpc->hdr_accept);
959dfcf4 451 headers = curl_slist_append(headers, "Expect:");
de1a2fdd
SP
452
453 if (large_request) {
454 /* The request body is large and the size cannot be predicted.
455 * We must use chunked encoding to send it.
456 */
de1a2fdd 457 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
6c81a990 458 rpc->initial_buffer = 1;
de1a2fdd
SP
459 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
460 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
6c81a990
MS
461#ifndef NO_CURL_IOCTL
462 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
463 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
464#endif
de1a2fdd
SP
465 if (options.verbosity > 1) {
466 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
467 fflush(stderr);
468 }
469
b8538603
SP
470 } else if (use_gzip && 1024 < rpc->len) {
471 /* The client backend isn't giving us compressed data so
472 * we can try to deflate it ourselves, this may save on.
473 * the transfer time.
474 */
475 size_t size;
ef49a7a0 476 git_zstream stream;
b8538603
SP
477 int ret;
478
479 memset(&stream, 0, sizeof(stream));
55bb5c91 480 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
225a6f10 481 size = git_deflate_bound(&stream, rpc->len);
b8538603
SP
482 gzip_body = xmalloc(size);
483
484 stream.next_in = (unsigned char *)rpc->buf;
485 stream.avail_in = rpc->len;
486 stream.next_out = (unsigned char *)gzip_body;
487 stream.avail_out = size;
488
55bb5c91 489 ret = git_deflate(&stream, Z_FINISH);
b8538603
SP
490 if (ret != Z_STREAM_END)
491 die("cannot deflate request; zlib deflate error %d", ret);
492
55bb5c91 493 ret = git_deflate_end_gently(&stream);
b8538603
SP
494 if (ret != Z_OK)
495 die("cannot deflate request; zlib end error %d", ret);
496
497 size = stream.total_out;
498
499 headers = curl_slist_append(headers, "Content-Encoding: gzip");
500 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
501 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, size);
502
503 if (options.verbosity > 1) {
504 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
505 rpc->service_name,
506 (unsigned long)rpc->len, (unsigned long)size);
507 fflush(stderr);
508 }
de1a2fdd
SP
509 } else {
510 /* We know the complete request size in advance, use the
511 * more normal Content-Length approach.
512 */
513 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
514 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
515 if (options.verbosity > 1) {
516 fprintf(stderr, "POST %s (%lu bytes)\n",
517 rpc->service_name, (unsigned long)rpc->len);
518 fflush(stderr);
519 }
520 }
521
522 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
523 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
524 curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
525
206b099d 526 err = run_slot(slot);
de1a2fdd
SP
527
528 curl_slist_free_all(headers);
b8538603 529 free(gzip_body);
de1a2fdd
SP
530 return err;
531}
532
533static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
534{
535 const char *svc = rpc->service_name;
536 struct strbuf buf = STRBUF_INIT;
537 struct child_process client;
538 int err = 0;
539
de1a2fdd
SP
540 memset(&client, 0, sizeof(client));
541 client.in = -1;
542 client.out = -1;
543 client.git_cmd = 1;
544 client.argv = rpc->argv;
545 if (start_command(&client))
546 exit(1);
547 if (heads)
548 write_or_die(client.in, heads->buf, heads->len);
549
550 rpc->alloc = http_post_buffer;
551 rpc->buf = xmalloc(rpc->alloc);
552 rpc->in = client.in;
553 rpc->out = client.out;
554 strbuf_init(&rpc->result, 0);
555
d8fab072 556 strbuf_addf(&buf, "%s%s", url, svc);
de1a2fdd
SP
557 rpc->service_url = strbuf_detach(&buf, NULL);
558
559 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
560 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
561
8efa5f62 562 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
de1a2fdd
SP
563 rpc->hdr_accept = strbuf_detach(&buf, NULL);
564
565 while (!err) {
566 int n = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
567 if (!n)
568 break;
569 rpc->pos = 0;
570 rpc->len = n;
571 err |= post_rpc(rpc);
572 }
de1a2fdd
SP
573
574 close(client.in);
de1a2fdd 575 client.in = -1;
6cdf0223
SP
576 if (!err) {
577 strbuf_read(&rpc->result, client.out, 0);
578 } else {
579 char buf[4096];
580 for (;;)
581 if (xread(client.out, buf, sizeof(buf)) <= 0)
582 break;
583 }
b4ee10f6
SP
584
585 close(client.out);
de1a2fdd
SP
586 client.out = -1;
587
588 err |= finish_command(&client);
589 free(rpc->service_url);
590 free(rpc->hdr_content_type);
591 free(rpc->hdr_accept);
592 free(rpc->buf);
593 strbuf_release(&buf);
594 return err;
595}
596
292ce46b
SP
597static int fetch_dumb(int nr_heads, struct ref **to_fetch)
598{
26e1e0b2 599 struct walker *walker;
292ce46b
SP
600 char **targets = xmalloc(nr_heads * sizeof(char*));
601 int ret, i;
602
249b2004
SP
603 if (options.depth)
604 die("dumb http transport does not support --depth");
292ce46b
SP
605 for (i = 0; i < nr_heads; i++)
606 targets[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
607
26e1e0b2 608 walker = get_http_walker(url);
292ce46b
SP
609 walker->get_all = 1;
610 walker->get_tree = 1;
611 walker->get_history = 1;
ef08ef9e 612 walker->get_verbosely = options.verbosity >= 3;
292ce46b
SP
613 walker->get_recover = 0;
614 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
26e1e0b2 615 walker_free(walker);
292ce46b
SP
616
617 for (i = 0; i < nr_heads; i++)
618 free(targets[i]);
619 free(targets);
620
621 return ret ? error("Fetch failed.") : 0;
622}
623
249b2004
SP
624static int fetch_git(struct discovery *heads,
625 int nr_heads, struct ref **to_fetch)
626{
627 struct rpc_state rpc;
628 char *depth_arg = NULL;
629 const char **argv;
630 int argc = 0, i, err;
631
632 argv = xmalloc((15 + nr_heads) * sizeof(char*));
633 argv[argc++] = "fetch-pack";
634 argv[argc++] = "--stateless-rpc";
635 argv[argc++] = "--lock-pack";
636 if (options.followtags)
637 argv[argc++] = "--include-tag";
638 if (options.thin)
639 argv[argc++] = "--thin";
640 if (options.verbosity >= 3) {
641 argv[argc++] = "-v";
642 argv[argc++] = "-v";
643 }
644 if (!options.progress)
645 argv[argc++] = "--no-progress";
646 if (options.depth) {
647 struct strbuf buf = STRBUF_INIT;
648 strbuf_addf(&buf, "--depth=%lu", options.depth);
649 depth_arg = strbuf_detach(&buf, NULL);
650 argv[argc++] = depth_arg;
651 }
652 argv[argc++] = url;
653 for (i = 0; i < nr_heads; i++) {
654 struct ref *ref = to_fetch[i];
655 if (!ref->name || !*ref->name)
656 die("cannot fetch by sha1 over smart http");
657 argv[argc++] = ref->name;
658 }
659 argv[argc++] = NULL;
660
661 memset(&rpc, 0, sizeof(rpc));
662 rpc.service_name = "git-upload-pack",
663 rpc.argv = argv;
b8538603 664 rpc.gzip_request = 1;
249b2004
SP
665
666 err = rpc_service(&rpc, heads);
667 if (rpc.result.len)
668 safe_write(1, rpc.result.buf, rpc.result.len);
669 strbuf_release(&rpc.result);
670 free(argv);
671 free(depth_arg);
672 return err;
673}
674
675static int fetch(int nr_heads, struct ref **to_fetch)
676{
677 struct discovery *d = discover_refs("git-upload-pack");
678 if (d->proto_git)
679 return fetch_git(d, nr_heads, to_fetch);
680 else
681 return fetch_dumb(nr_heads, to_fetch);
682}
683
292ce46b
SP
684static void parse_fetch(struct strbuf *buf)
685{
686 struct ref **to_fetch = NULL;
687 struct ref *list_head = NULL;
688 struct ref **list = &list_head;
689 int alloc_heads = 0, nr_heads = 0;
690
691 do {
692 if (!prefixcmp(buf->buf, "fetch ")) {
693 char *p = buf->buf + strlen("fetch ");
694 char *name;
695 struct ref *ref;
696 unsigned char old_sha1[20];
697
698 if (strlen(p) < 40 || get_sha1_hex(p, old_sha1))
699 die("protocol error: expected sha/ref, got %s'", p);
700 if (p[40] == ' ')
701 name = p + 41;
702 else if (!p[40])
703 name = "";
704 else
705 die("protocol error: expected sha/ref, got %s'", p);
706
707 ref = alloc_ref(name);
708 hashcpy(ref->old_sha1, old_sha1);
709
710 *list = ref;
711 list = &ref->next;
712
713 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
714 to_fetch[nr_heads++] = ref;
715 }
716 else
717 die("http transport does not support %s", buf->buf);
718
719 strbuf_reset(buf);
720 if (strbuf_getline(buf, stdin, '\n') == EOF)
721 return;
722 if (!*buf->buf)
723 break;
724 } while (1);
725
249b2004 726 if (fetch(nr_heads, to_fetch))
292ce46b
SP
727 exit(128); /* error already reported */
728 free_refs(list_head);
729 free(to_fetch);
730
731 printf("\n");
732 fflush(stdout);
733 strbuf_reset(buf);
734}
735
ae4efe19
SP
736static int push_dav(int nr_spec, char **specs)
737{
738 const char **argv = xmalloc((10 + nr_spec) * sizeof(char*));
739 int argc = 0, i;
740
741 argv[argc++] = "http-push";
742 argv[argc++] = "--helper-status";
743 if (options.dry_run)
744 argv[argc++] = "--dry-run";
745 if (options.verbosity > 1)
746 argv[argc++] = "--verbose";
747 argv[argc++] = url;
748 for (i = 0; i < nr_spec; i++)
749 argv[argc++] = specs[i];
750 argv[argc++] = NULL;
751
752 if (run_command_v_opt(argv, RUN_GIT_CMD))
753 die("git-%s failed", argv[0]);
754 free(argv);
755 return 0;
756}
757
de1a2fdd
SP
758static int push_git(struct discovery *heads, int nr_spec, char **specs)
759{
760 struct rpc_state rpc;
761 const char **argv;
762 int argc = 0, i, err;
763
764 argv = xmalloc((10 + nr_spec) * sizeof(char*));
765 argv[argc++] = "send-pack";
766 argv[argc++] = "--stateless-rpc";
767 argv[argc++] = "--helper-status";
768 if (options.thin)
769 argv[argc++] = "--thin";
770 if (options.dry_run)
771 argv[argc++] = "--dry-run";
5a277f3f 772 if (options.verbosity > 1)
de1a2fdd
SP
773 argv[argc++] = "--verbose";
774 argv[argc++] = url;
775 for (i = 0; i < nr_spec; i++)
776 argv[argc++] = specs[i];
777 argv[argc++] = NULL;
778
779 memset(&rpc, 0, sizeof(rpc));
780 rpc.service_name = "git-receive-pack",
781 rpc.argv = argv;
782
783 err = rpc_service(&rpc, heads);
784 if (rpc.result.len)
785 safe_write(1, rpc.result.buf, rpc.result.len);
786 strbuf_release(&rpc.result);
787 free(argv);
788 return err;
789}
790
791static int push(int nr_spec, char **specs)
792{
793 struct discovery *heads = discover_refs("git-receive-pack");
794 int ret;
795
796 if (heads->proto_git)
797 ret = push_git(heads, nr_spec, specs);
798 else
799 ret = push_dav(nr_spec, specs);
800 free_discovery(heads);
801 return ret;
802}
803
ae4efe19
SP
804static void parse_push(struct strbuf *buf)
805{
806 char **specs = NULL;
807 int alloc_spec = 0, nr_spec = 0, i;
808
809 do {
810 if (!prefixcmp(buf->buf, "push ")) {
811 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
812 specs[nr_spec++] = xstrdup(buf->buf + 5);
813 }
814 else
815 die("http transport does not support %s", buf->buf);
816
817 strbuf_reset(buf);
818 if (strbuf_getline(buf, stdin, '\n') == EOF)
dc4cd767 819 goto free_specs;
ae4efe19
SP
820 if (!*buf->buf)
821 break;
822 } while (1);
823
de1a2fdd 824 if (push(nr_spec, specs))
ae4efe19 825 exit(128); /* error already reported */
ae4efe19
SP
826
827 printf("\n");
828 fflush(stdout);
dc4cd767
JM
829
830 free_specs:
831 for (i = 0; i < nr_spec; i++)
832 free(specs[i]);
833 free(specs);
ae4efe19
SP
834}
835
a2d725b7
DB
836int main(int argc, const char **argv)
837{
a2d725b7 838 struct strbuf buf = STRBUF_INIT;
a45d3d7e 839 int nongit;
a2d725b7 840
c6dfb399 841 git_extract_argv0_path(argv[0]);
a45d3d7e 842 setup_git_directory_gently(&nongit);
a2d725b7
DB
843 if (argc < 2) {
844 fprintf(stderr, "Remote needed\n");
845 return 1;
846 }
847
ef08ef9e
SP
848 options.verbosity = 1;
849 options.progress = !!isatty(2);
de1a2fdd 850 options.thin = 1;
ef08ef9e 851
a2d725b7
DB
852 remote = remote_get(argv[1]);
853
854 if (argc > 2) {
d8fab072 855 end_url_with_slash(&buf, argv[2]);
a2d725b7 856 } else {
d8fab072 857 end_url_with_slash(&buf, remote->url[0]);
a2d725b7
DB
858 }
859
d8fab072
TRC
860 url = strbuf_detach(&buf, NULL);
861
deba4937 862 http_init(remote, url);
888692b7 863
a2d725b7 864 do {
1843f0ce
SR
865 if (strbuf_getline(&buf, stdin, '\n') == EOF) {
866 if (ferror(stdin))
867 fprintf(stderr, "Error reading command stream\n");
868 else
869 fprintf(stderr, "Unexpected end of command stream\n");
870 return 1;
871 }
872 if (buf.len == 0)
a2d725b7
DB
873 break;
874 if (!prefixcmp(buf.buf, "fetch ")) {
a45d3d7e
DB
875 if (nongit)
876 die("Fetch attempted without a local repo");
292ce46b
SP
877 parse_fetch(&buf);
878
ae4efe19 879 } else if (!strcmp(buf.buf, "list") || !prefixcmp(buf.buf, "list ")) {
97cc7bc4
SP
880 int for_push = !!strstr(buf.buf + 4, "for-push");
881 output_refs(get_refs(for_push));
ae4efe19
SP
882
883 } else if (!prefixcmp(buf.buf, "push ")) {
884 parse_push(&buf);
885
ef08ef9e
SP
886 } else if (!prefixcmp(buf.buf, "option ")) {
887 char *name = buf.buf + strlen("option ");
888 char *value = strchr(name, ' ');
889 int result;
890
891 if (value)
892 *value++ = '\0';
893 else
894 value = "true";
895
896 result = set_option(name, value);
897 if (!result)
898 printf("ok\n");
899 else if (result < 0)
900 printf("error invalid value\n");
901 else
902 printf("unsupported\n");
a2d725b7 903 fflush(stdout);
ef08ef9e 904
a2d725b7
DB
905 } else if (!strcmp(buf.buf, "capabilities")) {
906 printf("fetch\n");
ef08ef9e 907 printf("option\n");
ae4efe19 908 printf("push\n");
a2d725b7
DB
909 printf("\n");
910 fflush(stdout);
911 } else {
1843f0ce 912 fprintf(stderr, "Unknown command '%s'\n", buf.buf);
a2d725b7
DB
913 return 1;
914 }
915 strbuf_reset(&buf);
916 } while (1);
888692b7
TRC
917
918 http_cleanup();
919
a2d725b7
DB
920 return 0;
921}