tgupdate: merge girocco base into girocco
[git/gitweb.git] / remote-curl.c
blob34a97e7328d440d48badd53bb0d3167a58558ee9
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 "string-list.h"
10 #include "sideband.h"
11 #include "argv-array.h"
12 #include "credential.h"
13 #include "sha1-array.h"
14 #include "send-pack.h"
16 static struct remote *remote;
17 /* always ends with a trailing slash */
18 static struct strbuf url = STRBUF_INIT;
20 struct options {
21 int verbosity;
22 unsigned long depth;
23 char *deepen_since;
24 struct string_list deepen_not;
25 unsigned progress : 1,
26 check_self_contained_and_connected : 1,
27 cloning : 1,
28 update_shallow : 1,
29 followtags : 1,
30 dry_run : 1,
31 thin : 1,
32 /* One of the SEND_PACK_PUSH_CERT_* constants. */
33 push_cert : 2,
34 deepen_relative : 1;
36 static struct options options;
37 static struct string_list cas_options = STRING_LIST_INIT_DUP;
39 static int set_option(const char *name, const char *value)
41 if (!strcmp(name, "verbosity")) {
42 char *end;
43 int v = strtol(value, &end, 10);
44 if (value == end || *end)
45 return -1;
46 options.verbosity = v;
47 return 0;
49 else if (!strcmp(name, "progress")) {
50 if (!strcmp(value, "true"))
51 options.progress = 1;
52 else if (!strcmp(value, "false"))
53 options.progress = 0;
54 else
55 return -1;
56 return 0;
58 else if (!strcmp(name, "depth")) {
59 char *end;
60 unsigned long v = strtoul(value, &end, 10);
61 if (value == end || *end)
62 return -1;
63 options.depth = v;
64 return 0;
66 else if (!strcmp(name, "deepen-since")) {
67 options.deepen_since = xstrdup(value);
68 return 0;
70 else if (!strcmp(name, "deepen-not")) {
71 string_list_append(&options.deepen_not, value);
72 return 0;
74 else if (!strcmp(name, "deepen-relative")) {
75 if (!strcmp(value, "true"))
76 options.deepen_relative = 1;
77 else if (!strcmp(value, "false"))
78 options.deepen_relative = 0;
79 else
80 return -1;
81 return 0;
83 else if (!strcmp(name, "followtags")) {
84 if (!strcmp(value, "true"))
85 options.followtags = 1;
86 else if (!strcmp(value, "false"))
87 options.followtags = 0;
88 else
89 return -1;
90 return 0;
92 else if (!strcmp(name, "dry-run")) {
93 if (!strcmp(value, "true"))
94 options.dry_run = 1;
95 else if (!strcmp(value, "false"))
96 options.dry_run = 0;
97 else
98 return -1;
99 return 0;
101 else if (!strcmp(name, "check-connectivity")) {
102 if (!strcmp(value, "true"))
103 options.check_self_contained_and_connected = 1;
104 else if (!strcmp(value, "false"))
105 options.check_self_contained_and_connected = 0;
106 else
107 return -1;
108 return 0;
110 else if (!strcmp(name, "cas")) {
111 struct strbuf val = STRBUF_INIT;
112 strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value);
113 string_list_append(&cas_options, val.buf);
114 strbuf_release(&val);
115 return 0;
116 } else if (!strcmp(name, "cloning")) {
117 if (!strcmp(value, "true"))
118 options.cloning = 1;
119 else if (!strcmp(value, "false"))
120 options.cloning = 0;
121 else
122 return -1;
123 return 0;
124 } else if (!strcmp(name, "update-shallow")) {
125 if (!strcmp(value, "true"))
126 options.update_shallow = 1;
127 else if (!strcmp(value, "false"))
128 options.update_shallow = 0;
129 else
130 return -1;
131 return 0;
132 } else if (!strcmp(name, "pushcert")) {
133 if (!strcmp(value, "true"))
134 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
135 else if (!strcmp(value, "false"))
136 options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
137 else if (!strcmp(value, "if-asked"))
138 options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
139 else
140 return -1;
141 return 0;
143 #if LIBCURL_VERSION_NUM >= 0x070a08
144 } else if (!strcmp(name, "family")) {
145 if (!strcmp(value, "ipv4"))
146 git_curl_ipresolve = CURL_IPRESOLVE_V4;
147 else if (!strcmp(value, "ipv6"))
148 git_curl_ipresolve = CURL_IPRESOLVE_V6;
149 else if (!strcmp(value, "all"))
150 git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
151 else
152 return -1;
153 return 0;
154 #endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
155 } else {
156 return 1 /* unsupported */;
160 struct discovery {
161 const char *service;
162 char *buf_alloc;
163 char *buf;
164 size_t len;
165 struct ref *refs;
166 struct sha1_array shallow;
167 unsigned proto_git : 1;
169 static struct discovery *last_discovery;
171 static struct ref *parse_git_refs(struct discovery *heads, int for_push)
173 struct ref *list = NULL;
174 get_remote_heads(-1, heads->buf, heads->len, &list,
175 for_push ? REF_NORMAL : 0, NULL, &heads->shallow);
176 return list;
179 static struct ref *parse_info_refs(struct discovery *heads)
181 char *data, *start, *mid;
182 char *ref_name;
183 int i = 0;
185 struct ref *refs = NULL;
186 struct ref *ref = NULL;
187 struct ref *last_ref = NULL;
189 data = heads->buf;
190 start = NULL;
191 mid = data;
192 while (i < heads->len) {
193 if (!start) {
194 start = &data[i];
196 if (data[i] == '\t')
197 mid = &data[i];
198 if (data[i] == '\n') {
199 if (mid - start != 40)
200 die("%sinfo/refs not valid: is this a git repository?",
201 url.buf);
202 data[i] = 0;
203 ref_name = mid + 1;
204 ref = alloc_ref(ref_name);
205 get_oid_hex(start, &ref->old_oid);
206 if (!refs)
207 refs = ref;
208 if (last_ref)
209 last_ref->next = ref;
210 last_ref = ref;
211 start = NULL;
213 i++;
216 ref = alloc_ref("HEAD");
217 if (!http_fetch_ref(url.buf, ref) &&
218 !resolve_remote_symref(ref, refs)) {
219 ref->next = refs;
220 refs = ref;
221 } else {
222 free(ref);
225 return refs;
228 static void free_discovery(struct discovery *d)
230 if (d) {
231 if (d == last_discovery)
232 last_discovery = NULL;
233 free(d->shallow.sha1);
234 free(d->buf_alloc);
235 free_refs(d->refs);
236 free(d);
240 static int show_http_message(struct strbuf *type, struct strbuf *charset,
241 struct strbuf *msg)
243 const char *p, *eol;
246 * We only show text/plain parts, as other types are likely
247 * to be ugly to look at on the user's terminal.
249 if (strcmp(type->buf, "text/plain"))
250 return -1;
251 if (charset->len)
252 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
254 strbuf_trim(msg);
255 if (!msg->len)
256 return -1;
258 p = msg->buf;
259 do {
260 eol = strchrnul(p, '\n');
261 fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
262 p = eol + 1;
263 } while(*eol);
264 return 0;
267 static struct discovery *discover_refs(const char *service, int for_push)
269 struct strbuf exp = STRBUF_INIT;
270 struct strbuf type = STRBUF_INIT;
271 struct strbuf charset = STRBUF_INIT;
272 struct strbuf buffer = STRBUF_INIT;
273 struct strbuf refs_url = STRBUF_INIT;
274 struct strbuf effective_url = STRBUF_INIT;
275 struct discovery *last = last_discovery;
276 int http_ret, maybe_smart = 0;
277 struct http_get_options http_options;
279 if (last && !strcmp(service, last->service))
280 return last;
281 free_discovery(last);
283 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
284 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
285 git_env_bool("GIT_SMART_HTTP", 1)) {
286 maybe_smart = 1;
287 if (!strchr(url.buf, '?'))
288 strbuf_addch(&refs_url, '?');
289 else
290 strbuf_addch(&refs_url, '&');
291 strbuf_addf(&refs_url, "service=%s", service);
294 memset(&http_options, 0, sizeof(http_options));
295 http_options.content_type = &type;
296 http_options.charset = &charset;
297 http_options.effective_url = &effective_url;
298 http_options.base_url = &url;
299 http_options.initial_request = 1;
300 http_options.no_cache = 1;
301 http_options.keep_error = 1;
303 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
304 switch (http_ret) {
305 case HTTP_OK:
306 break;
307 case HTTP_MISSING_TARGET:
308 show_http_message(&type, &charset, &buffer);
309 die("repository '%s' not found", url.buf);
310 case HTTP_NOAUTH:
311 show_http_message(&type, &charset, &buffer);
312 die("Authentication failed for '%s'", url.buf);
313 default:
314 show_http_message(&type, &charset, &buffer);
315 die("unable to access '%s': %s", url.buf, curl_errorstr);
318 if (options.verbosity && !starts_with(refs_url.buf, url.buf))
319 warning(_("redirecting to %s"), url.buf);
321 last= xcalloc(1, sizeof(*last_discovery));
322 last->service = service;
323 last->buf_alloc = strbuf_detach(&buffer, &last->len);
324 last->buf = last->buf_alloc;
326 strbuf_addf(&exp, "application/x-%s-advertisement", service);
327 if (maybe_smart &&
328 (5 <= last->len && last->buf[4] == '#') &&
329 !strbuf_cmp(&exp, &type)) {
330 char *line;
333 * smart HTTP response; validate that the service
334 * pkt-line matches our request.
336 line = packet_read_line_buf(&last->buf, &last->len, NULL);
338 strbuf_reset(&exp);
339 strbuf_addf(&exp, "# service=%s", service);
340 if (strcmp(line, exp.buf))
341 die("invalid server response; got '%s'", line);
342 strbuf_release(&exp);
344 /* The header can include additional metadata lines, up
345 * until a packet flush marker. Ignore these now, but
346 * in the future we might start to scan them.
348 while (packet_read_line_buf(&last->buf, &last->len, NULL))
351 last->proto_git = 1;
354 if (last->proto_git)
355 last->refs = parse_git_refs(last, for_push);
356 else
357 last->refs = parse_info_refs(last);
359 strbuf_release(&refs_url);
360 strbuf_release(&exp);
361 strbuf_release(&type);
362 strbuf_release(&charset);
363 strbuf_release(&effective_url);
364 strbuf_release(&buffer);
365 last_discovery = last;
366 return last;
369 static struct ref *get_refs(int for_push)
371 struct discovery *heads;
373 if (for_push)
374 heads = discover_refs("git-receive-pack", for_push);
375 else
376 heads = discover_refs("git-upload-pack", for_push);
378 return heads->refs;
381 static void output_refs(struct ref *refs)
383 struct ref *posn;
384 for (posn = refs; posn; posn = posn->next) {
385 if (posn->symref)
386 printf("@%s %s\n", posn->symref, posn->name);
387 else
388 printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
390 printf("\n");
391 fflush(stdout);
394 struct rpc_state {
395 const char *service_name;
396 const char **argv;
397 struct strbuf *stdin_preamble;
398 char *service_url;
399 char *hdr_content_type;
400 char *hdr_accept;
401 char *buf;
402 size_t alloc;
403 size_t len;
404 size_t pos;
405 int in;
406 int out;
407 int any_written;
408 struct strbuf result;
409 unsigned gzip_request : 1;
410 unsigned initial_buffer : 1;
413 static size_t rpc_out(void *ptr, size_t eltsize,
414 size_t nmemb, void *buffer_)
416 size_t max = eltsize * nmemb;
417 struct rpc_state *rpc = buffer_;
418 size_t avail = rpc->len - rpc->pos;
420 if (!avail) {
421 rpc->initial_buffer = 0;
422 avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
423 if (!avail)
424 return 0;
425 rpc->pos = 0;
426 rpc->len = avail;
429 if (max < avail)
430 avail = max;
431 memcpy(ptr, rpc->buf + rpc->pos, avail);
432 rpc->pos += avail;
433 return avail;
436 #ifndef NO_CURL_IOCTL
437 static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
439 struct rpc_state *rpc = clientp;
441 switch (cmd) {
442 case CURLIOCMD_NOP:
443 return CURLIOE_OK;
445 case CURLIOCMD_RESTARTREAD:
446 if (rpc->initial_buffer) {
447 rpc->pos = 0;
448 return CURLIOE_OK;
450 error("unable to rewind rpc post data - try increasing http.postBuffer");
451 return CURLIOE_FAILRESTART;
453 default:
454 return CURLIOE_UNKNOWNCMD;
457 #endif
459 static size_t rpc_in(char *ptr, size_t eltsize,
460 size_t nmemb, void *buffer_)
462 size_t size = eltsize * nmemb;
463 struct rpc_state *rpc = buffer_;
464 if (size)
465 rpc->any_written = 1;
466 write_or_die(rpc->in, ptr, size);
467 return size;
470 static int run_slot(struct active_request_slot *slot,
471 struct slot_results *results)
473 int err;
474 struct slot_results results_buf;
476 if (!results)
477 results = &results_buf;
479 err = run_one_slot(slot, results);
481 if (err != HTTP_OK && err != HTTP_REAUTH) {
482 struct strbuf msg = STRBUF_INIT;
483 if (results->http_code && results->http_code != 200)
484 strbuf_addf(&msg, "HTTP %ld", results->http_code);
485 if (results->curl_result != CURLE_OK) {
486 if (msg.len)
487 strbuf_addch(&msg, ' ');
488 strbuf_addf(&msg, "curl %d", results->curl_result);
489 if (curl_errorstr[0]) {
490 strbuf_addch(&msg, ' ');
491 strbuf_addstr(&msg, curl_errorstr);
494 error("RPC failed; %s", msg.buf);
495 strbuf_release(&msg);
498 return err;
501 static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
503 struct active_request_slot *slot;
504 struct curl_slist *headers = http_copy_default_headers();
505 struct strbuf buf = STRBUF_INIT;
506 int err;
508 slot = get_active_slot();
510 headers = curl_slist_append(headers, rpc->hdr_content_type);
511 headers = curl_slist_append(headers, rpc->hdr_accept);
513 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
514 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
515 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
516 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
517 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
518 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
519 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
520 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
521 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
523 err = run_slot(slot, results);
525 curl_slist_free_all(headers);
526 strbuf_release(&buf);
527 return err;
530 static int post_rpc(struct rpc_state *rpc)
532 struct active_request_slot *slot;
533 struct curl_slist *headers = http_copy_default_headers();
534 int use_gzip = rpc->gzip_request;
535 char *gzip_body = NULL;
536 size_t gzip_size = 0;
537 int err, large_request = 0;
538 int needs_100_continue = 0;
540 /* Try to load the entire request, if we can fit it into the
541 * allocated buffer space we can use HTTP/1.0 and avoid the
542 * chunked encoding mess.
544 while (1) {
545 size_t left = rpc->alloc - rpc->len;
546 char *buf = rpc->buf + rpc->len;
547 int n;
549 if (left < LARGE_PACKET_MAX) {
550 large_request = 1;
551 use_gzip = 0;
552 break;
555 n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
556 if (!n)
557 break;
558 rpc->len += n;
561 if (large_request) {
562 struct slot_results results;
564 do {
565 err = probe_rpc(rpc, &results);
566 if (err == HTTP_REAUTH)
567 credential_fill(&http_auth);
568 } while (err == HTTP_REAUTH);
569 if (err != HTTP_OK)
570 return -1;
572 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
573 needs_100_continue = 1;
576 headers = curl_slist_append(headers, rpc->hdr_content_type);
577 headers = curl_slist_append(headers, rpc->hdr_accept);
578 headers = curl_slist_append(headers, needs_100_continue ?
579 "Expect: 100-continue" : "Expect:");
581 retry:
582 slot = get_active_slot();
584 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
585 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
586 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
587 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
589 if (large_request) {
590 /* The request body is large and the size cannot be predicted.
591 * We must use chunked encoding to send it.
593 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
594 rpc->initial_buffer = 1;
595 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
596 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
597 #ifndef NO_CURL_IOCTL
598 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
599 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
600 #endif
601 if (options.verbosity > 1) {
602 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
603 fflush(stderr);
606 } else if (gzip_body) {
608 * If we are looping to retry authentication, then the previous
609 * run will have set up the headers and gzip buffer already,
610 * and we just need to send it.
612 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
613 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, gzip_size);
615 } else if (use_gzip && 1024 < rpc->len) {
616 /* The client backend isn't giving us compressed data so
617 * we can try to deflate it ourselves, this may save on.
618 * the transfer time.
620 git_zstream stream;
621 int ret;
623 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
624 gzip_size = git_deflate_bound(&stream, rpc->len);
625 gzip_body = xmalloc(gzip_size);
627 stream.next_in = (unsigned char *)rpc->buf;
628 stream.avail_in = rpc->len;
629 stream.next_out = (unsigned char *)gzip_body;
630 stream.avail_out = gzip_size;
632 ret = git_deflate(&stream, Z_FINISH);
633 if (ret != Z_STREAM_END)
634 die("cannot deflate request; zlib deflate error %d", ret);
636 ret = git_deflate_end_gently(&stream);
637 if (ret != Z_OK)
638 die("cannot deflate request; zlib end error %d", ret);
640 gzip_size = stream.total_out;
642 headers = curl_slist_append(headers, "Content-Encoding: gzip");
643 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
644 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, gzip_size);
646 if (options.verbosity > 1) {
647 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
648 rpc->service_name,
649 (unsigned long)rpc->len, (unsigned long)gzip_size);
650 fflush(stderr);
652 } else {
653 /* We know the complete request size in advance, use the
654 * more normal Content-Length approach.
656 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
657 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
658 if (options.verbosity > 1) {
659 fprintf(stderr, "POST %s (%lu bytes)\n",
660 rpc->service_name, (unsigned long)rpc->len);
661 fflush(stderr);
665 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
666 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
667 curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
670 rpc->any_written = 0;
671 err = run_slot(slot, NULL);
672 if (err == HTTP_REAUTH && !large_request) {
673 credential_fill(&http_auth);
674 goto retry;
676 if (err != HTTP_OK)
677 err = -1;
679 if (!rpc->any_written)
680 err = -1;
682 curl_slist_free_all(headers);
683 free(gzip_body);
684 return err;
687 static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
689 const char *svc = rpc->service_name;
690 struct strbuf buf = STRBUF_INIT;
691 struct strbuf *preamble = rpc->stdin_preamble;
692 struct child_process client = CHILD_PROCESS_INIT;
693 int err = 0;
695 client.in = -1;
696 client.out = -1;
697 client.git_cmd = 1;
698 client.argv = rpc->argv;
699 if (start_command(&client))
700 exit(1);
701 if (preamble)
702 write_or_die(client.in, preamble->buf, preamble->len);
703 if (heads)
704 write_or_die(client.in, heads->buf, heads->len);
706 rpc->alloc = http_post_buffer;
707 rpc->buf = xmalloc(rpc->alloc);
708 rpc->in = client.in;
709 rpc->out = client.out;
710 strbuf_init(&rpc->result, 0);
712 strbuf_addf(&buf, "%s%s", url.buf, svc);
713 rpc->service_url = strbuf_detach(&buf, NULL);
715 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
716 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
718 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
719 rpc->hdr_accept = strbuf_detach(&buf, NULL);
721 while (!err) {
722 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
723 if (!n)
724 break;
725 rpc->pos = 0;
726 rpc->len = n;
727 err |= post_rpc(rpc);
730 close(client.in);
731 client.in = -1;
732 if (!err) {
733 strbuf_read(&rpc->result, client.out, 0);
734 } else {
735 char buf[4096];
736 for (;;)
737 if (xread(client.out, buf, sizeof(buf)) <= 0)
738 break;
741 close(client.out);
742 client.out = -1;
744 err |= finish_command(&client);
745 free(rpc->service_url);
746 free(rpc->hdr_content_type);
747 free(rpc->hdr_accept);
748 free(rpc->buf);
749 strbuf_release(&buf);
750 return err;
753 static int fetch_dumb(int nr_heads, struct ref **to_fetch)
755 struct walker *walker;
756 char **targets;
757 int ret, i;
759 ALLOC_ARRAY(targets, nr_heads);
760 if (options.depth || options.deepen_since)
761 die("dumb http transport does not support shallow capabilities");
762 for (i = 0; i < nr_heads; i++)
763 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
765 walker = get_http_walker(url.buf);
766 walker->get_all = 1;
767 walker->get_tree = 1;
768 walker->get_history = 1;
769 walker->get_verbosely = options.verbosity >= 3;
770 walker->get_recover = 0;
771 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
772 walker_free(walker);
774 for (i = 0; i < nr_heads; i++)
775 free(targets[i]);
776 free(targets);
778 return ret ? error("fetch failed.") : 0;
781 static int fetch_git(struct discovery *heads,
782 int nr_heads, struct ref **to_fetch)
784 struct rpc_state rpc;
785 struct strbuf preamble = STRBUF_INIT;
786 int i, err;
787 struct argv_array args = ARGV_ARRAY_INIT;
789 argv_array_pushl(&args, "fetch-pack", "--stateless-rpc",
790 "--stdin", "--lock-pack", NULL);
791 if (options.followtags)
792 argv_array_push(&args, "--include-tag");
793 if (options.thin)
794 argv_array_push(&args, "--thin");
795 if (options.verbosity >= 3)
796 argv_array_pushl(&args, "-v", "-v", NULL);
797 if (options.check_self_contained_and_connected)
798 argv_array_push(&args, "--check-self-contained-and-connected");
799 if (options.cloning)
800 argv_array_push(&args, "--cloning");
801 if (options.update_shallow)
802 argv_array_push(&args, "--update-shallow");
803 if (!options.progress)
804 argv_array_push(&args, "--no-progress");
805 if (options.depth)
806 argv_array_pushf(&args, "--depth=%lu", options.depth);
807 if (options.deepen_since)
808 argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since);
809 for (i = 0; i < options.deepen_not.nr; i++)
810 argv_array_pushf(&args, "--shallow-exclude=%s",
811 options.deepen_not.items[i].string);
812 if (options.deepen_relative && options.depth)
813 argv_array_push(&args, "--deepen-relative");
814 argv_array_push(&args, url.buf);
816 for (i = 0; i < nr_heads; i++) {
817 struct ref *ref = to_fetch[i];
818 if (!*ref->name)
819 die("cannot fetch by sha1 over smart http");
820 packet_buf_write(&preamble, "%s %s\n",
821 oid_to_hex(&ref->old_oid), ref->name);
823 packet_buf_flush(&preamble);
825 memset(&rpc, 0, sizeof(rpc));
826 rpc.service_name = "git-upload-pack",
827 rpc.argv = args.argv;
828 rpc.stdin_preamble = &preamble;
829 rpc.gzip_request = 1;
831 err = rpc_service(&rpc, heads);
832 if (rpc.result.len)
833 write_or_die(1, rpc.result.buf, rpc.result.len);
834 strbuf_release(&rpc.result);
835 strbuf_release(&preamble);
836 argv_array_clear(&args);
837 return err;
840 static int fetch(int nr_heads, struct ref **to_fetch)
842 struct discovery *d = discover_refs("git-upload-pack", 0);
843 if (d->proto_git)
844 return fetch_git(d, nr_heads, to_fetch);
845 else
846 return fetch_dumb(nr_heads, to_fetch);
849 static void parse_fetch(struct strbuf *buf)
851 struct ref **to_fetch = NULL;
852 struct ref *list_head = NULL;
853 struct ref **list = &list_head;
854 int alloc_heads = 0, nr_heads = 0;
856 do {
857 const char *p;
858 if (skip_prefix(buf->buf, "fetch ", &p)) {
859 const char *name;
860 struct ref *ref;
861 struct object_id old_oid;
863 if (get_oid_hex(p, &old_oid))
864 die("protocol error: expected sha/ref, got %s'", p);
865 if (p[GIT_SHA1_HEXSZ] == ' ')
866 name = p + GIT_SHA1_HEXSZ + 1;
867 else if (!p[GIT_SHA1_HEXSZ])
868 name = "";
869 else
870 die("protocol error: expected sha/ref, got %s'", p);
872 ref = alloc_ref(name);
873 oidcpy(&ref->old_oid, &old_oid);
875 *list = ref;
876 list = &ref->next;
878 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
879 to_fetch[nr_heads++] = ref;
881 else
882 die("http transport does not support %s", buf->buf);
884 strbuf_reset(buf);
885 if (strbuf_getline_lf(buf, stdin) == EOF)
886 return;
887 if (!*buf->buf)
888 break;
889 } while (1);
891 if (fetch(nr_heads, to_fetch))
892 exit(128); /* error already reported */
893 free_refs(list_head);
894 free(to_fetch);
896 printf("\n");
897 fflush(stdout);
898 strbuf_reset(buf);
901 static int push_dav(int nr_spec, char **specs)
903 struct child_process child = CHILD_PROCESS_INIT;
904 size_t i;
906 child.git_cmd = 1;
907 argv_array_push(&child.args, "http-push");
908 argv_array_push(&child.args, "--helper-status");
909 if (options.dry_run)
910 argv_array_push(&child.args, "--dry-run");
911 if (options.verbosity > 1)
912 argv_array_push(&child.args, "--verbose");
913 argv_array_push(&child.args, url.buf);
914 for (i = 0; i < nr_spec; i++)
915 argv_array_push(&child.args, specs[i]);
917 if (run_command(&child))
918 die("git-http-push failed");
919 return 0;
922 static int push_git(struct discovery *heads, int nr_spec, char **specs)
924 struct rpc_state rpc;
925 int i, err;
926 struct argv_array args;
927 struct string_list_item *cas_option;
928 struct strbuf preamble = STRBUF_INIT;
930 argv_array_init(&args);
931 argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
932 NULL);
934 if (options.thin)
935 argv_array_push(&args, "--thin");
936 if (options.dry_run)
937 argv_array_push(&args, "--dry-run");
938 if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
939 argv_array_push(&args, "--signed=yes");
940 else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
941 argv_array_push(&args, "--signed=if-asked");
942 if (options.verbosity == 0)
943 argv_array_push(&args, "--quiet");
944 else if (options.verbosity > 1)
945 argv_array_push(&args, "--verbose");
946 argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
947 for_each_string_list_item(cas_option, &cas_options)
948 argv_array_push(&args, cas_option->string);
949 argv_array_push(&args, url.buf);
951 argv_array_push(&args, "--stdin");
952 for (i = 0; i < nr_spec; i++)
953 packet_buf_write(&preamble, "%s\n", specs[i]);
954 packet_buf_flush(&preamble);
956 memset(&rpc, 0, sizeof(rpc));
957 rpc.service_name = "git-receive-pack",
958 rpc.argv = args.argv;
959 rpc.stdin_preamble = &preamble;
961 err = rpc_service(&rpc, heads);
962 if (rpc.result.len)
963 write_or_die(1, rpc.result.buf, rpc.result.len);
964 strbuf_release(&rpc.result);
965 strbuf_release(&preamble);
966 argv_array_clear(&args);
967 return err;
970 static int push(int nr_spec, char **specs)
972 struct discovery *heads = discover_refs("git-receive-pack", 1);
973 int ret;
975 if (heads->proto_git)
976 ret = push_git(heads, nr_spec, specs);
977 else
978 ret = push_dav(nr_spec, specs);
979 free_discovery(heads);
980 return ret;
983 static void parse_push(struct strbuf *buf)
985 char **specs = NULL;
986 int alloc_spec = 0, nr_spec = 0, i, ret;
988 do {
989 if (starts_with(buf->buf, "push ")) {
990 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
991 specs[nr_spec++] = xstrdup(buf->buf + 5);
993 else
994 die("http transport does not support %s", buf->buf);
996 strbuf_reset(buf);
997 if (strbuf_getline_lf(buf, stdin) == EOF)
998 goto free_specs;
999 if (!*buf->buf)
1000 break;
1001 } while (1);
1003 ret = push(nr_spec, specs);
1004 printf("\n");
1005 fflush(stdout);
1007 if (ret)
1008 exit(128); /* error already reported */
1010 free_specs:
1011 for (i = 0; i < nr_spec; i++)
1012 free(specs[i]);
1013 free(specs);
1016 int cmd_main(int argc, const char **argv)
1018 struct strbuf buf = STRBUF_INIT;
1019 int nongit;
1021 setup_git_directory_gently(&nongit);
1022 if (argc < 2) {
1023 error("remote-curl: usage: git remote-curl <remote> [<url>]");
1024 return 1;
1027 options.verbosity = 1;
1028 options.progress = !!isatty(2);
1029 options.thin = 1;
1030 string_list_init(&options.deepen_not, 1);
1032 remote = remote_get(argv[1]);
1034 if (argc > 2) {
1035 end_url_with_slash(&url, argv[2]);
1036 } else {
1037 end_url_with_slash(&url, remote->url[0]);
1040 http_init(remote, url.buf, 0);
1042 do {
1043 const char *arg;
1045 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1046 if (ferror(stdin))
1047 error("remote-curl: error reading command stream from git");
1048 return 1;
1050 if (buf.len == 0)
1051 break;
1052 if (starts_with(buf.buf, "fetch ")) {
1053 if (nongit)
1054 die("remote-curl: fetch attempted without a local repo");
1055 parse_fetch(&buf);
1057 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
1058 int for_push = !!strstr(buf.buf + 4, "for-push");
1059 output_refs(get_refs(for_push));
1061 } else if (starts_with(buf.buf, "push ")) {
1062 parse_push(&buf);
1064 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1065 char *value = strchr(arg, ' ');
1066 int result;
1068 if (value)
1069 *value++ = '\0';
1070 else
1071 value = "true";
1073 result = set_option(arg, value);
1074 if (!result)
1075 printf("ok\n");
1076 else if (result < 0)
1077 printf("error invalid value\n");
1078 else
1079 printf("unsupported\n");
1080 fflush(stdout);
1082 } else if (!strcmp(buf.buf, "capabilities")) {
1083 printf("fetch\n");
1084 printf("option\n");
1085 printf("push\n");
1086 printf("check-connectivity\n");
1087 printf("\n");
1088 fflush(stdout);
1089 } else {
1090 error("remote-curl: unknown command '%s' from git", buf.buf);
1091 return 1;
1093 strbuf_reset(&buf);
1094 } while (1);
1096 http_cleanup();
1098 return 0;