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[git/jrn.git] / remote-curl.c
blob8ac5028343320b44b75c6945318fe5b328af81fd
1 #include "cache.h"
2 #include "remote.h"
3 #include "strbuf.h"
4 #include "walker.h"
5 #include "http.h"
6 #include "exec_cmd.h"
7 #include "run-command.h"
8 #include "pkt-line.h"
9 #include "sideband.h"
11 static struct remote *remote;
12 static const char *url; /* always ends with a trailing slash */
14 struct options {
15 int verbosity;
16 unsigned long depth;
17 unsigned progress : 1,
18 followtags : 1,
19 dry_run : 1,
20 thin : 1;
22 static struct options options;
24 static int set_option(const char *name, const char *value)
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;
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;
41 return 0;
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;
49 return 0;
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;
58 return 0;
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;
69 else {
70 return 1 /* unsupported */;
74 struct discovery {
75 const char *service;
76 char *buf_alloc;
77 char *buf;
78 size_t len;
79 unsigned proto_git : 1;
81 static struct discovery *last_discovery;
83 static void free_discovery(struct discovery *d)
85 if (d) {
86 if (d == last_discovery)
87 last_discovery = NULL;
88 free(d->buf_alloc);
89 free(d);
93 static struct discovery* discover_refs(const char *service)
95 struct strbuf buffer = STRBUF_INIT;
96 struct discovery *last = last_discovery;
97 char *refs_url;
98 int http_ret, is_http = 0, proto_git_candidate = 1;
100 if (last && !strcmp(service, last->service))
101 return last;
102 free_discovery(last);
104 strbuf_addf(&buffer, "%sinfo/refs", url);
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);
113 refs_url = strbuf_detach(&buffer, NULL);
115 http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
117 /* try again with "plain" url (no ? or & appended) */
118 if (http_ret != HTTP_OK) {
119 free(refs_url);
120 strbuf_reset(&buffer);
122 proto_git_candidate = 0;
123 strbuf_addf(&buffer, "%sinfo/refs", url);
124 refs_url = strbuf_detach(&buffer, NULL);
126 http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
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);
135 case HTTP_NOAUTH:
136 die("Authentication failed");
137 default:
138 http_error(refs_url, http_ret);
139 die("HTTP request failed");
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;
147 if (is_http && proto_git_candidate
148 && 5 <= last->len && last->buf[4] == '#') {
149 /* smart HTTP response; validate that the service
150 * pkt-line matches our request.
152 struct strbuf exp = STRBUF_INIT;
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);
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);
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.
168 strbuf_reset(&buffer);
169 while (packet_get_line(&buffer, &last->buf, &last->len) > 0)
170 strbuf_reset(&buffer);
172 last->proto_git = 1;
175 free(refs_url);
176 strbuf_release(&buffer);
177 last_discovery = last;
178 return last;
181 static int write_discovery(int in, int out, void *data)
183 struct discovery *heads = data;
184 int err = 0;
185 if (write_in_full(out, heads->buf, heads->len) != heads->len)
186 err = 1;
187 close(out);
188 return err;
191 static struct ref *parse_git_refs(struct discovery *heads)
193 struct ref *list = NULL;
194 struct async async;
196 memset(&async, 0, sizeof(async));
197 async.proc = write_discovery;
198 async.data = heads;
199 async.out = -1;
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;
210 static struct ref *parse_info_refs(struct discovery *heads)
212 char *data, *start, *mid;
213 char *ref_name;
214 int i = 0;
216 struct ref *refs = NULL;
217 struct ref *ref = NULL;
218 struct ref *last_ref = NULL;
220 data = heads->buf;
221 start = NULL;
222 mid = data;
223 while (i < heads->len) {
224 if (!start) {
225 start = &data[i];
227 if (data[i] == '\t')
228 mid = &data[i];
229 if (data[i] == '\n') {
230 if (mid - start != 40)
231 die("%sinfo/refs not valid: is this a git repository?", url);
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;
246 i++;
249 ref = alloc_ref("HEAD");
250 if (!http_fetch_ref(url, ref) &&
251 !resolve_remote_symref(ref, refs)) {
252 ref->next = refs;
253 refs = ref;
254 } else {
255 free(ref);
258 return refs;
261 static struct ref *get_refs(int for_push)
263 struct discovery *heads;
265 if (for_push)
266 heads = discover_refs("git-receive-pack");
267 else
268 heads = discover_refs("git-upload-pack");
270 if (heads->proto_git)
271 return parse_git_refs(heads);
272 return parse_info_refs(heads);
275 static void output_refs(struct ref *refs)
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);
284 printf("\n");
285 fflush(stdout);
286 free_refs(refs);
289 struct 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;
302 unsigned gzip_request : 1;
303 unsigned initial_buffer : 1;
306 static size_t rpc_out(void *ptr, size_t eltsize,
307 size_t nmemb, void *buffer_)
309 size_t max = eltsize * nmemb;
310 struct rpc_state *rpc = buffer_;
311 size_t avail = rpc->len - rpc->pos;
313 if (!avail) {
314 rpc->initial_buffer = 0;
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;
322 if (max < avail)
323 avail = max;
324 memcpy(ptr, rpc->buf + rpc->pos, avail);
325 rpc->pos += avail;
326 return avail;
329 #ifndef NO_CURL_IOCTL
330 static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
332 struct rpc_state *rpc = clientp;
334 switch (cmd) {
335 case CURLIOCMD_NOP:
336 return CURLIOE_OK;
338 case CURLIOCMD_RESTARTREAD:
339 if (rpc->initial_buffer) {
340 rpc->pos = 0;
341 return CURLIOE_OK;
343 fprintf(stderr, "Unable to rewind rpc post data - try increasing http.postBuffer\n");
344 return CURLIOE_FAILRESTART;
346 default:
347 return CURLIOE_UNKNOWNCMD;
350 #endif
352 static size_t rpc_in(char *ptr, size_t eltsize,
353 size_t nmemb, void *buffer_)
355 size_t size = eltsize * nmemb;
356 struct rpc_state *rpc = buffer_;
357 write_or_die(rpc->in, ptr, size);
358 return size;
361 static int run_slot(struct active_request_slot *slot)
363 int err = 0;
364 struct slot_results results;
366 slot->results = &results;
367 slot->curl_result = curl_easy_perform(slot->curl);
368 finish_active_slot(slot);
370 if (results.curl_result != CURLE_OK) {
371 err |= error("RPC failed; result=%d, HTTP code = %ld",
372 results.curl_result, results.http_code);
375 return err;
378 static int probe_rpc(struct rpc_state *rpc)
380 struct active_request_slot *slot;
381 struct curl_slist *headers = NULL;
382 struct strbuf buf = STRBUF_INIT;
383 int err;
385 slot = get_active_slot();
387 headers = curl_slist_append(headers, rpc->hdr_content_type);
388 headers = curl_slist_append(headers, rpc->hdr_accept);
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);
400 err = run_slot(slot);
402 curl_slist_free_all(headers);
403 strbuf_release(&buf);
404 return err;
407 static int post_rpc(struct rpc_state *rpc)
409 struct active_request_slot *slot;
410 struct curl_slist *headers = NULL;
411 int use_gzip = rpc->gzip_request;
412 char *gzip_body = NULL;
413 int err, large_request = 0;
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.
419 while (1) {
420 size_t left = rpc->alloc - rpc->len;
421 char *buf = rpc->buf + rpc->len;
422 int n;
424 if (left < LARGE_PACKET_MAX) {
425 large_request = 1;
426 use_gzip = 0;
427 break;
430 n = packet_read_line(rpc->out, buf, left);
431 if (!n)
432 break;
433 rpc->len += n;
436 if (large_request) {
437 err = probe_rpc(rpc);
438 if (err)
439 return err;
442 slot = get_active_slot();
444 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
445 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
446 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
447 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
449 headers = curl_slist_append(headers, rpc->hdr_content_type);
450 headers = curl_slist_append(headers, rpc->hdr_accept);
451 headers = curl_slist_append(headers, "Expect:");
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.
457 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
458 rpc->initial_buffer = 1;
459 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
460 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
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
465 if (options.verbosity > 1) {
466 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
467 fflush(stderr);
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.
475 size_t size;
476 z_stream stream;
477 int ret;
479 memset(&stream, 0, sizeof(stream));
480 ret = deflateInit2(&stream, Z_BEST_COMPRESSION,
481 Z_DEFLATED, (15 + 16),
482 8, Z_DEFAULT_STRATEGY);
483 if (ret != Z_OK)
484 die("cannot deflate request; zlib init error %d", ret);
485 size = deflateBound(&stream, rpc->len);
486 gzip_body = xmalloc(size);
488 stream.next_in = (unsigned char *)rpc->buf;
489 stream.avail_in = rpc->len;
490 stream.next_out = (unsigned char *)gzip_body;
491 stream.avail_out = size;
493 ret = deflate(&stream, Z_FINISH);
494 if (ret != Z_STREAM_END)
495 die("cannot deflate request; zlib deflate error %d", ret);
497 ret = deflateEnd(&stream);
498 if (ret != Z_OK)
499 die("cannot deflate request; zlib end error %d", ret);
501 size = stream.total_out;
503 headers = curl_slist_append(headers, "Content-Encoding: gzip");
504 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
505 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, size);
507 if (options.verbosity > 1) {
508 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
509 rpc->service_name,
510 (unsigned long)rpc->len, (unsigned long)size);
511 fflush(stderr);
513 } else {
514 /* We know the complete request size in advance, use the
515 * more normal Content-Length approach.
517 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
518 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
519 if (options.verbosity > 1) {
520 fprintf(stderr, "POST %s (%lu bytes)\n",
521 rpc->service_name, (unsigned long)rpc->len);
522 fflush(stderr);
526 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
527 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
528 curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
530 err = run_slot(slot);
532 curl_slist_free_all(headers);
533 free(gzip_body);
534 return err;
537 static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
539 const char *svc = rpc->service_name;
540 struct strbuf buf = STRBUF_INIT;
541 struct child_process client;
542 int err = 0;
544 memset(&client, 0, sizeof(client));
545 client.in = -1;
546 client.out = -1;
547 client.git_cmd = 1;
548 client.argv = rpc->argv;
549 if (start_command(&client))
550 exit(1);
551 if (heads)
552 write_or_die(client.in, heads->buf, heads->len);
554 rpc->alloc = http_post_buffer;
555 rpc->buf = xmalloc(rpc->alloc);
556 rpc->in = client.in;
557 rpc->out = client.out;
558 strbuf_init(&rpc->result, 0);
560 strbuf_addf(&buf, "%s%s", url, svc);
561 rpc->service_url = strbuf_detach(&buf, NULL);
563 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
564 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
566 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
567 rpc->hdr_accept = strbuf_detach(&buf, NULL);
569 while (!err) {
570 int n = packet_read_line(rpc->out, rpc->buf, rpc->alloc);
571 if (!n)
572 break;
573 rpc->pos = 0;
574 rpc->len = n;
575 err |= post_rpc(rpc);
578 close(client.in);
579 client.in = -1;
580 strbuf_read(&rpc->result, client.out, 0);
582 close(client.out);
583 client.out = -1;
585 err |= finish_command(&client);
586 free(rpc->service_url);
587 free(rpc->hdr_content_type);
588 free(rpc->hdr_accept);
589 free(rpc->buf);
590 strbuf_release(&buf);
591 return err;
594 static int fetch_dumb(int nr_heads, struct ref **to_fetch)
596 struct walker *walker;
597 char **targets = xmalloc(nr_heads * sizeof(char*));
598 int ret, i;
600 if (options.depth)
601 die("dumb http transport does not support --depth");
602 for (i = 0; i < nr_heads; i++)
603 targets[i] = xstrdup(sha1_to_hex(to_fetch[i]->old_sha1));
605 walker = get_http_walker(url);
606 walker->get_all = 1;
607 walker->get_tree = 1;
608 walker->get_history = 1;
609 walker->get_verbosely = options.verbosity >= 3;
610 walker->get_recover = 0;
611 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
612 walker_free(walker);
614 for (i = 0; i < nr_heads; i++)
615 free(targets[i]);
616 free(targets);
618 return ret ? error("Fetch failed.") : 0;
621 static int fetch_git(struct discovery *heads,
622 int nr_heads, struct ref **to_fetch)
624 struct rpc_state rpc;
625 char *depth_arg = NULL;
626 const char **argv;
627 int argc = 0, i, err;
629 argv = xmalloc((15 + nr_heads) * sizeof(char*));
630 argv[argc++] = "fetch-pack";
631 argv[argc++] = "--stateless-rpc";
632 argv[argc++] = "--lock-pack";
633 if (options.followtags)
634 argv[argc++] = "--include-tag";
635 if (options.thin)
636 argv[argc++] = "--thin";
637 if (options.verbosity >= 3) {
638 argv[argc++] = "-v";
639 argv[argc++] = "-v";
641 if (!options.progress)
642 argv[argc++] = "--no-progress";
643 if (options.depth) {
644 struct strbuf buf = STRBUF_INIT;
645 strbuf_addf(&buf, "--depth=%lu", options.depth);
646 depth_arg = strbuf_detach(&buf, NULL);
647 argv[argc++] = depth_arg;
649 argv[argc++] = url;
650 for (i = 0; i < nr_heads; i++) {
651 struct ref *ref = to_fetch[i];
652 if (!ref->name || !*ref->name)
653 die("cannot fetch by sha1 over smart http");
654 argv[argc++] = ref->name;
656 argv[argc++] = NULL;
658 memset(&rpc, 0, sizeof(rpc));
659 rpc.service_name = "git-upload-pack",
660 rpc.argv = argv;
661 rpc.gzip_request = 1;
663 err = rpc_service(&rpc, heads);
664 if (rpc.result.len)
665 safe_write(1, rpc.result.buf, rpc.result.len);
666 strbuf_release(&rpc.result);
667 free(argv);
668 free(depth_arg);
669 return err;
672 static int fetch(int nr_heads, struct ref **to_fetch)
674 struct discovery *d = discover_refs("git-upload-pack");
675 if (d->proto_git)
676 return fetch_git(d, nr_heads, to_fetch);
677 else
678 return fetch_dumb(nr_heads, to_fetch);
681 static void parse_fetch(struct strbuf *buf)
683 struct ref **to_fetch = NULL;
684 struct ref *list_head = NULL;
685 struct ref **list = &list_head;
686 int alloc_heads = 0, nr_heads = 0;
688 do {
689 if (!prefixcmp(buf->buf, "fetch ")) {
690 char *p = buf->buf + strlen("fetch ");
691 char *name;
692 struct ref *ref;
693 unsigned char old_sha1[20];
695 if (strlen(p) < 40 || get_sha1_hex(p, old_sha1))
696 die("protocol error: expected sha/ref, got %s'", p);
697 if (p[40] == ' ')
698 name = p + 41;
699 else if (!p[40])
700 name = "";
701 else
702 die("protocol error: expected sha/ref, got %s'", p);
704 ref = alloc_ref(name);
705 hashcpy(ref->old_sha1, old_sha1);
707 *list = ref;
708 list = &ref->next;
710 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
711 to_fetch[nr_heads++] = ref;
713 else
714 die("http transport does not support %s", buf->buf);
716 strbuf_reset(buf);
717 if (strbuf_getline(buf, stdin, '\n') == EOF)
718 return;
719 if (!*buf->buf)
720 break;
721 } while (1);
723 if (fetch(nr_heads, to_fetch))
724 exit(128); /* error already reported */
725 free_refs(list_head);
726 free(to_fetch);
728 printf("\n");
729 fflush(stdout);
730 strbuf_reset(buf);
733 static int push_dav(int nr_spec, char **specs)
735 const char **argv = xmalloc((10 + nr_spec) * sizeof(char*));
736 int argc = 0, i;
738 argv[argc++] = "http-push";
739 argv[argc++] = "--helper-status";
740 if (options.dry_run)
741 argv[argc++] = "--dry-run";
742 if (options.verbosity > 1)
743 argv[argc++] = "--verbose";
744 argv[argc++] = url;
745 for (i = 0; i < nr_spec; i++)
746 argv[argc++] = specs[i];
747 argv[argc++] = NULL;
749 if (run_command_v_opt(argv, RUN_GIT_CMD))
750 die("git-%s failed", argv[0]);
751 free(argv);
752 return 0;
755 static int push_git(struct discovery *heads, int nr_spec, char **specs)
757 struct rpc_state rpc;
758 const char **argv;
759 int argc = 0, i, err;
761 argv = xmalloc((10 + nr_spec) * sizeof(char*));
762 argv[argc++] = "send-pack";
763 argv[argc++] = "--stateless-rpc";
764 argv[argc++] = "--helper-status";
765 if (options.thin)
766 argv[argc++] = "--thin";
767 if (options.dry_run)
768 argv[argc++] = "--dry-run";
769 if (options.verbosity > 1)
770 argv[argc++] = "--verbose";
771 argv[argc++] = url;
772 for (i = 0; i < nr_spec; i++)
773 argv[argc++] = specs[i];
774 argv[argc++] = NULL;
776 memset(&rpc, 0, sizeof(rpc));
777 rpc.service_name = "git-receive-pack",
778 rpc.argv = argv;
780 err = rpc_service(&rpc, heads);
781 if (rpc.result.len)
782 safe_write(1, rpc.result.buf, rpc.result.len);
783 strbuf_release(&rpc.result);
784 free(argv);
785 return err;
788 static int push(int nr_spec, char **specs)
790 struct discovery *heads = discover_refs("git-receive-pack");
791 int ret;
793 if (heads->proto_git)
794 ret = push_git(heads, nr_spec, specs);
795 else
796 ret = push_dav(nr_spec, specs);
797 free_discovery(heads);
798 return ret;
801 static void parse_push(struct strbuf *buf)
803 char **specs = NULL;
804 int alloc_spec = 0, nr_spec = 0, i;
806 do {
807 if (!prefixcmp(buf->buf, "push ")) {
808 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
809 specs[nr_spec++] = xstrdup(buf->buf + 5);
811 else
812 die("http transport does not support %s", buf->buf);
814 strbuf_reset(buf);
815 if (strbuf_getline(buf, stdin, '\n') == EOF)
816 goto free_specs;
817 if (!*buf->buf)
818 break;
819 } while (1);
821 if (push(nr_spec, specs))
822 exit(128); /* error already reported */
824 printf("\n");
825 fflush(stdout);
827 free_specs:
828 for (i = 0; i < nr_spec; i++)
829 free(specs[i]);
830 free(specs);
833 int main(int argc, const char **argv)
835 struct strbuf buf = STRBUF_INIT;
836 int nongit;
838 git_extract_argv0_path(argv[0]);
839 setup_git_directory_gently(&nongit);
840 if (argc < 2) {
841 fprintf(stderr, "Remote needed\n");
842 return 1;
845 options.verbosity = 1;
846 options.progress = !!isatty(2);
847 options.thin = 1;
849 remote = remote_get(argv[1]);
851 if (argc > 2) {
852 end_url_with_slash(&buf, argv[2]);
853 } else {
854 end_url_with_slash(&buf, remote->url[0]);
857 url = strbuf_detach(&buf, NULL);
859 http_init(remote);
861 do {
862 if (strbuf_getline(&buf, stdin, '\n') == EOF)
863 break;
864 if (!prefixcmp(buf.buf, "fetch ")) {
865 if (nongit)
866 die("Fetch attempted without a local repo");
867 parse_fetch(&buf);
869 } else if (!strcmp(buf.buf, "list") || !prefixcmp(buf.buf, "list ")) {
870 int for_push = !!strstr(buf.buf + 4, "for-push");
871 output_refs(get_refs(for_push));
873 } else if (!prefixcmp(buf.buf, "push ")) {
874 parse_push(&buf);
876 } else if (!prefixcmp(buf.buf, "option ")) {
877 char *name = buf.buf + strlen("option ");
878 char *value = strchr(name, ' ');
879 int result;
881 if (value)
882 *value++ = '\0';
883 else
884 value = "true";
886 result = set_option(name, value);
887 if (!result)
888 printf("ok\n");
889 else if (result < 0)
890 printf("error invalid value\n");
891 else
892 printf("unsupported\n");
893 fflush(stdout);
895 } else if (!strcmp(buf.buf, "capabilities")) {
896 printf("fetch\n");
897 printf("option\n");
898 printf("push\n");
899 printf("\n");
900 fflush(stdout);
901 } else {
902 return 1;
904 strbuf_reset(&buf);
905 } while (1);
907 http_cleanup();
909 return 0;