Merge branch 'jt/http-redact-cookies' into maint
[git.git] / remote-curl.c
blob0053b09549ab419ab8f2da2c519d689f5e0d83b3
1 #include "cache.h"
2 #include "config.h"
3 #include "remote.h"
4 #include "strbuf.h"
5 #include "walker.h"
6 #include "http.h"
7 #include "exec_cmd.h"
8 #include "run-command.h"
9 #include "pkt-line.h"
10 #include "string-list.h"
11 #include "sideband.h"
12 #include "argv-array.h"
13 #include "credential.h"
14 #include "sha1-array.h"
15 #include "send-pack.h"
17 static struct remote *remote;
18 /* always ends with a trailing slash */
19 static struct strbuf url = STRBUF_INIT;
21 struct options {
22 int verbosity;
23 unsigned long depth;
24 char *deepen_since;
25 struct string_list deepen_not;
26 struct string_list push_options;
27 unsigned progress : 1,
28 check_self_contained_and_connected : 1,
29 cloning : 1,
30 update_shallow : 1,
31 followtags : 1,
32 dry_run : 1,
33 thin : 1,
34 /* One of the SEND_PACK_PUSH_CERT_* constants. */
35 push_cert : 2,
36 deepen_relative : 1;
38 static struct options options;
39 static struct string_list cas_options = STRING_LIST_INIT_DUP;
41 static int set_option(const char *name, const char *value)
43 if (!strcmp(name, "verbosity")) {
44 char *end;
45 int v = strtol(value, &end, 10);
46 if (value == end || *end)
47 return -1;
48 options.verbosity = v;
49 return 0;
51 else if (!strcmp(name, "progress")) {
52 if (!strcmp(value, "true"))
53 options.progress = 1;
54 else if (!strcmp(value, "false"))
55 options.progress = 0;
56 else
57 return -1;
58 return 0;
60 else if (!strcmp(name, "depth")) {
61 char *end;
62 unsigned long v = strtoul(value, &end, 10);
63 if (value == end || *end)
64 return -1;
65 options.depth = v;
66 return 0;
68 else if (!strcmp(name, "deepen-since")) {
69 options.deepen_since = xstrdup(value);
70 return 0;
72 else if (!strcmp(name, "deepen-not")) {
73 string_list_append(&options.deepen_not, value);
74 return 0;
76 else if (!strcmp(name, "deepen-relative")) {
77 if (!strcmp(value, "true"))
78 options.deepen_relative = 1;
79 else if (!strcmp(value, "false"))
80 options.deepen_relative = 0;
81 else
82 return -1;
83 return 0;
85 else if (!strcmp(name, "followtags")) {
86 if (!strcmp(value, "true"))
87 options.followtags = 1;
88 else if (!strcmp(value, "false"))
89 options.followtags = 0;
90 else
91 return -1;
92 return 0;
94 else if (!strcmp(name, "dry-run")) {
95 if (!strcmp(value, "true"))
96 options.dry_run = 1;
97 else if (!strcmp(value, "false"))
98 options.dry_run = 0;
99 else
100 return -1;
101 return 0;
103 else if (!strcmp(name, "check-connectivity")) {
104 if (!strcmp(value, "true"))
105 options.check_self_contained_and_connected = 1;
106 else if (!strcmp(value, "false"))
107 options.check_self_contained_and_connected = 0;
108 else
109 return -1;
110 return 0;
112 else if (!strcmp(name, "cas")) {
113 struct strbuf val = STRBUF_INIT;
114 strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value);
115 string_list_append(&cas_options, val.buf);
116 strbuf_release(&val);
117 return 0;
118 } else if (!strcmp(name, "cloning")) {
119 if (!strcmp(value, "true"))
120 options.cloning = 1;
121 else if (!strcmp(value, "false"))
122 options.cloning = 0;
123 else
124 return -1;
125 return 0;
126 } else if (!strcmp(name, "update-shallow")) {
127 if (!strcmp(value, "true"))
128 options.update_shallow = 1;
129 else if (!strcmp(value, "false"))
130 options.update_shallow = 0;
131 else
132 return -1;
133 return 0;
134 } else if (!strcmp(name, "pushcert")) {
135 if (!strcmp(value, "true"))
136 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
137 else if (!strcmp(value, "false"))
138 options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
139 else if (!strcmp(value, "if-asked"))
140 options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
141 else
142 return -1;
143 return 0;
144 } else if (!strcmp(name, "push-option")) {
145 string_list_append(&options.push_options, value);
146 return 0;
148 #if LIBCURL_VERSION_NUM >= 0x070a08
149 } else if (!strcmp(name, "family")) {
150 if (!strcmp(value, "ipv4"))
151 git_curl_ipresolve = CURL_IPRESOLVE_V4;
152 else if (!strcmp(value, "ipv6"))
153 git_curl_ipresolve = CURL_IPRESOLVE_V6;
154 else if (!strcmp(value, "all"))
155 git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
156 else
157 return -1;
158 return 0;
159 #endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
160 } else {
161 return 1 /* unsupported */;
165 struct discovery {
166 const char *service;
167 char *buf_alloc;
168 char *buf;
169 size_t len;
170 struct ref *refs;
171 struct oid_array shallow;
172 unsigned proto_git : 1;
174 static struct discovery *last_discovery;
176 static struct ref *parse_git_refs(struct discovery *heads, int for_push)
178 struct ref *list = NULL;
179 get_remote_heads(-1, heads->buf, heads->len, &list,
180 for_push ? REF_NORMAL : 0, NULL, &heads->shallow);
181 return list;
184 static struct ref *parse_info_refs(struct discovery *heads)
186 char *data, *start, *mid;
187 char *ref_name;
188 int i = 0;
190 struct ref *refs = NULL;
191 struct ref *ref = NULL;
192 struct ref *last_ref = NULL;
194 data = heads->buf;
195 start = NULL;
196 mid = data;
197 while (i < heads->len) {
198 if (!start) {
199 start = &data[i];
201 if (data[i] == '\t')
202 mid = &data[i];
203 if (data[i] == '\n') {
204 if (mid - start != 40)
205 die("%sinfo/refs not valid: is this a git repository?",
206 url.buf);
207 data[i] = 0;
208 ref_name = mid + 1;
209 ref = alloc_ref(ref_name);
210 get_oid_hex(start, &ref->old_oid);
211 if (!refs)
212 refs = ref;
213 if (last_ref)
214 last_ref->next = ref;
215 last_ref = ref;
216 start = NULL;
218 i++;
221 ref = alloc_ref("HEAD");
222 if (!http_fetch_ref(url.buf, ref) &&
223 !resolve_remote_symref(ref, refs)) {
224 ref->next = refs;
225 refs = ref;
226 } else {
227 free(ref);
230 return refs;
233 static void free_discovery(struct discovery *d)
235 if (d) {
236 if (d == last_discovery)
237 last_discovery = NULL;
238 free(d->shallow.oid);
239 free(d->buf_alloc);
240 free_refs(d->refs);
241 free(d);
245 static int show_http_message(struct strbuf *type, struct strbuf *charset,
246 struct strbuf *msg)
248 const char *p, *eol;
251 * We only show text/plain parts, as other types are likely
252 * to be ugly to look at on the user's terminal.
254 if (strcmp(type->buf, "text/plain"))
255 return -1;
256 if (charset->len)
257 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
259 strbuf_trim(msg);
260 if (!msg->len)
261 return -1;
263 p = msg->buf;
264 do {
265 eol = strchrnul(p, '\n');
266 fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
267 p = eol + 1;
268 } while(*eol);
269 return 0;
272 static struct discovery *discover_refs(const char *service, int for_push)
274 struct strbuf exp = STRBUF_INIT;
275 struct strbuf type = STRBUF_INIT;
276 struct strbuf charset = STRBUF_INIT;
277 struct strbuf buffer = STRBUF_INIT;
278 struct strbuf refs_url = STRBUF_INIT;
279 struct strbuf effective_url = STRBUF_INIT;
280 struct discovery *last = last_discovery;
281 int http_ret, maybe_smart = 0;
282 struct http_get_options http_options;
284 if (last && !strcmp(service, last->service))
285 return last;
286 free_discovery(last);
288 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
289 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
290 git_env_bool("GIT_SMART_HTTP", 1)) {
291 maybe_smart = 1;
292 if (!strchr(url.buf, '?'))
293 strbuf_addch(&refs_url, '?');
294 else
295 strbuf_addch(&refs_url, '&');
296 strbuf_addf(&refs_url, "service=%s", service);
299 memset(&http_options, 0, sizeof(http_options));
300 http_options.content_type = &type;
301 http_options.charset = &charset;
302 http_options.effective_url = &effective_url;
303 http_options.base_url = &url;
304 http_options.initial_request = 1;
305 http_options.no_cache = 1;
306 http_options.keep_error = 1;
308 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
309 switch (http_ret) {
310 case HTTP_OK:
311 break;
312 case HTTP_MISSING_TARGET:
313 show_http_message(&type, &charset, &buffer);
314 die("repository '%s' not found", url.buf);
315 case HTTP_NOAUTH:
316 show_http_message(&type, &charset, &buffer);
317 die("Authentication failed for '%s'", url.buf);
318 default:
319 show_http_message(&type, &charset, &buffer);
320 die("unable to access '%s': %s", url.buf, curl_errorstr);
323 if (options.verbosity && !starts_with(refs_url.buf, url.buf))
324 warning(_("redirecting to %s"), url.buf);
326 last= xcalloc(1, sizeof(*last_discovery));
327 last->service = service;
328 last->buf_alloc = strbuf_detach(&buffer, &last->len);
329 last->buf = last->buf_alloc;
331 strbuf_addf(&exp, "application/x-%s-advertisement", service);
332 if (maybe_smart &&
333 (5 <= last->len && last->buf[4] == '#') &&
334 !strbuf_cmp(&exp, &type)) {
335 char *line;
338 * smart HTTP response; validate that the service
339 * pkt-line matches our request.
341 line = packet_read_line_buf(&last->buf, &last->len, NULL);
343 strbuf_reset(&exp);
344 strbuf_addf(&exp, "# service=%s", service);
345 if (strcmp(line, exp.buf))
346 die("invalid server response; got '%s'", line);
347 strbuf_release(&exp);
349 /* The header can include additional metadata lines, up
350 * until a packet flush marker. Ignore these now, but
351 * in the future we might start to scan them.
353 while (packet_read_line_buf(&last->buf, &last->len, NULL))
356 last->proto_git = 1;
359 if (last->proto_git)
360 last->refs = parse_git_refs(last, for_push);
361 else
362 last->refs = parse_info_refs(last);
364 strbuf_release(&refs_url);
365 strbuf_release(&exp);
366 strbuf_release(&type);
367 strbuf_release(&charset);
368 strbuf_release(&effective_url);
369 strbuf_release(&buffer);
370 last_discovery = last;
371 return last;
374 static struct ref *get_refs(int for_push)
376 struct discovery *heads;
378 if (for_push)
379 heads = discover_refs("git-receive-pack", for_push);
380 else
381 heads = discover_refs("git-upload-pack", for_push);
383 return heads->refs;
386 static void output_refs(struct ref *refs)
388 struct ref *posn;
389 for (posn = refs; posn; posn = posn->next) {
390 if (posn->symref)
391 printf("@%s %s\n", posn->symref, posn->name);
392 else
393 printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
395 printf("\n");
396 fflush(stdout);
399 struct rpc_state {
400 const char *service_name;
401 const char **argv;
402 struct strbuf *stdin_preamble;
403 char *service_url;
404 char *hdr_content_type;
405 char *hdr_accept;
406 char *buf;
407 size_t alloc;
408 size_t len;
409 size_t pos;
410 int in;
411 int out;
412 int any_written;
413 struct strbuf result;
414 unsigned gzip_request : 1;
415 unsigned initial_buffer : 1;
418 static size_t rpc_out(void *ptr, size_t eltsize,
419 size_t nmemb, void *buffer_)
421 size_t max = eltsize * nmemb;
422 struct rpc_state *rpc = buffer_;
423 size_t avail = rpc->len - rpc->pos;
425 if (!avail) {
426 rpc->initial_buffer = 0;
427 avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
428 if (!avail)
429 return 0;
430 rpc->pos = 0;
431 rpc->len = avail;
434 if (max < avail)
435 avail = max;
436 memcpy(ptr, rpc->buf + rpc->pos, avail);
437 rpc->pos += avail;
438 return avail;
441 #ifndef NO_CURL_IOCTL
442 static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
444 struct rpc_state *rpc = clientp;
446 switch (cmd) {
447 case CURLIOCMD_NOP:
448 return CURLIOE_OK;
450 case CURLIOCMD_RESTARTREAD:
451 if (rpc->initial_buffer) {
452 rpc->pos = 0;
453 return CURLIOE_OK;
455 error("unable to rewind rpc post data - try increasing http.postBuffer");
456 return CURLIOE_FAILRESTART;
458 default:
459 return CURLIOE_UNKNOWNCMD;
462 #endif
464 static size_t rpc_in(char *ptr, size_t eltsize,
465 size_t nmemb, void *buffer_)
467 size_t size = eltsize * nmemb;
468 struct rpc_state *rpc = buffer_;
469 if (size)
470 rpc->any_written = 1;
471 write_or_die(rpc->in, ptr, size);
472 return size;
475 static int run_slot(struct active_request_slot *slot,
476 struct slot_results *results)
478 int err;
479 struct slot_results results_buf;
481 if (!results)
482 results = &results_buf;
484 err = run_one_slot(slot, results);
486 if (err != HTTP_OK && err != HTTP_REAUTH) {
487 struct strbuf msg = STRBUF_INIT;
488 if (results->http_code && results->http_code != 200)
489 strbuf_addf(&msg, "HTTP %ld", results->http_code);
490 if (results->curl_result != CURLE_OK) {
491 if (msg.len)
492 strbuf_addch(&msg, ' ');
493 strbuf_addf(&msg, "curl %d", results->curl_result);
494 if (curl_errorstr[0]) {
495 strbuf_addch(&msg, ' ');
496 strbuf_addstr(&msg, curl_errorstr);
499 error("RPC failed; %s", msg.buf);
500 strbuf_release(&msg);
503 return err;
506 static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
508 struct active_request_slot *slot;
509 struct curl_slist *headers = http_copy_default_headers();
510 struct strbuf buf = STRBUF_INIT;
511 int err;
513 slot = get_active_slot();
515 headers = curl_slist_append(headers, rpc->hdr_content_type);
516 headers = curl_slist_append(headers, rpc->hdr_accept);
518 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
519 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
520 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
521 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
522 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
523 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
524 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
525 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
526 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
528 err = run_slot(slot, results);
530 curl_slist_free_all(headers);
531 strbuf_release(&buf);
532 return err;
535 static curl_off_t xcurl_off_t(ssize_t len) {
536 if (len > maximum_signed_value_of_type(curl_off_t))
537 die("cannot handle pushes this big");
538 return (curl_off_t) len;
541 static int post_rpc(struct rpc_state *rpc)
543 struct active_request_slot *slot;
544 struct curl_slist *headers = http_copy_default_headers();
545 int use_gzip = rpc->gzip_request;
546 char *gzip_body = NULL;
547 size_t gzip_size = 0;
548 int err, large_request = 0;
549 int needs_100_continue = 0;
551 /* Try to load the entire request, if we can fit it into the
552 * allocated buffer space we can use HTTP/1.0 and avoid the
553 * chunked encoding mess.
555 while (1) {
556 size_t left = rpc->alloc - rpc->len;
557 char *buf = rpc->buf + rpc->len;
558 int n;
560 if (left < LARGE_PACKET_MAX) {
561 large_request = 1;
562 use_gzip = 0;
563 break;
566 n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
567 if (!n)
568 break;
569 rpc->len += n;
572 if (large_request) {
573 struct slot_results results;
575 do {
576 err = probe_rpc(rpc, &results);
577 if (err == HTTP_REAUTH)
578 credential_fill(&http_auth);
579 } while (err == HTTP_REAUTH);
580 if (err != HTTP_OK)
581 return -1;
583 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
584 needs_100_continue = 1;
587 headers = curl_slist_append(headers, rpc->hdr_content_type);
588 headers = curl_slist_append(headers, rpc->hdr_accept);
589 headers = curl_slist_append(headers, needs_100_continue ?
590 "Expect: 100-continue" : "Expect:");
592 retry:
593 slot = get_active_slot();
595 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
596 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
597 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
598 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
600 if (large_request) {
601 /* The request body is large and the size cannot be predicted.
602 * We must use chunked encoding to send it.
604 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
605 rpc->initial_buffer = 1;
606 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
607 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
608 #ifndef NO_CURL_IOCTL
609 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
610 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
611 #endif
612 if (options.verbosity > 1) {
613 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
614 fflush(stderr);
617 } else if (gzip_body) {
619 * If we are looping to retry authentication, then the previous
620 * run will have set up the headers and gzip buffer already,
621 * and we just need to send it.
623 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
624 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
626 } else if (use_gzip && 1024 < rpc->len) {
627 /* The client backend isn't giving us compressed data so
628 * we can try to deflate it ourselves, this may save on.
629 * the transfer time.
631 git_zstream stream;
632 int ret;
634 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
635 gzip_size = git_deflate_bound(&stream, rpc->len);
636 gzip_body = xmalloc(gzip_size);
638 stream.next_in = (unsigned char *)rpc->buf;
639 stream.avail_in = rpc->len;
640 stream.next_out = (unsigned char *)gzip_body;
641 stream.avail_out = gzip_size;
643 ret = git_deflate(&stream, Z_FINISH);
644 if (ret != Z_STREAM_END)
645 die("cannot deflate request; zlib deflate error %d", ret);
647 ret = git_deflate_end_gently(&stream);
648 if (ret != Z_OK)
649 die("cannot deflate request; zlib end error %d", ret);
651 gzip_size = stream.total_out;
653 headers = curl_slist_append(headers, "Content-Encoding: gzip");
654 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
655 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
657 if (options.verbosity > 1) {
658 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
659 rpc->service_name,
660 (unsigned long)rpc->len, (unsigned long)gzip_size);
661 fflush(stderr);
663 } else {
664 /* We know the complete request size in advance, use the
665 * more normal Content-Length approach.
667 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
668 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len));
669 if (options.verbosity > 1) {
670 fprintf(stderr, "POST %s (%lu bytes)\n",
671 rpc->service_name, (unsigned long)rpc->len);
672 fflush(stderr);
676 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
677 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
678 curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
681 rpc->any_written = 0;
682 err = run_slot(slot, NULL);
683 if (err == HTTP_REAUTH && !large_request) {
684 credential_fill(&http_auth);
685 goto retry;
687 if (err != HTTP_OK)
688 err = -1;
690 if (!rpc->any_written)
691 err = -1;
693 curl_slist_free_all(headers);
694 free(gzip_body);
695 return err;
698 static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
700 const char *svc = rpc->service_name;
701 struct strbuf buf = STRBUF_INIT;
702 struct strbuf *preamble = rpc->stdin_preamble;
703 struct child_process client = CHILD_PROCESS_INIT;
704 int err = 0;
706 client.in = -1;
707 client.out = -1;
708 client.git_cmd = 1;
709 client.argv = rpc->argv;
710 if (start_command(&client))
711 exit(1);
712 if (preamble)
713 write_or_die(client.in, preamble->buf, preamble->len);
714 if (heads)
715 write_or_die(client.in, heads->buf, heads->len);
717 rpc->alloc = http_post_buffer;
718 rpc->buf = xmalloc(rpc->alloc);
719 rpc->in = client.in;
720 rpc->out = client.out;
721 strbuf_init(&rpc->result, 0);
723 strbuf_addf(&buf, "%s%s", url.buf, svc);
724 rpc->service_url = strbuf_detach(&buf, NULL);
726 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
727 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
729 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
730 rpc->hdr_accept = strbuf_detach(&buf, NULL);
732 while (!err) {
733 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
734 if (!n)
735 break;
736 rpc->pos = 0;
737 rpc->len = n;
738 err |= post_rpc(rpc);
741 close(client.in);
742 client.in = -1;
743 if (!err) {
744 strbuf_read(&rpc->result, client.out, 0);
745 } else {
746 char buf[4096];
747 for (;;)
748 if (xread(client.out, buf, sizeof(buf)) <= 0)
749 break;
752 close(client.out);
753 client.out = -1;
755 err |= finish_command(&client);
756 free(rpc->service_url);
757 free(rpc->hdr_content_type);
758 free(rpc->hdr_accept);
759 free(rpc->buf);
760 strbuf_release(&buf);
761 return err;
764 static int fetch_dumb(int nr_heads, struct ref **to_fetch)
766 struct walker *walker;
767 char **targets;
768 int ret, i;
770 ALLOC_ARRAY(targets, nr_heads);
771 if (options.depth || options.deepen_since)
772 die("dumb http transport does not support shallow capabilities");
773 for (i = 0; i < nr_heads; i++)
774 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
776 walker = get_http_walker(url.buf);
777 walker->get_all = 1;
778 walker->get_tree = 1;
779 walker->get_history = 1;
780 walker->get_verbosely = options.verbosity >= 3;
781 walker->get_recover = 0;
782 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
783 walker_free(walker);
785 for (i = 0; i < nr_heads; i++)
786 free(targets[i]);
787 free(targets);
789 return ret ? error("fetch failed.") : 0;
792 static int fetch_git(struct discovery *heads,
793 int nr_heads, struct ref **to_fetch)
795 struct rpc_state rpc;
796 struct strbuf preamble = STRBUF_INIT;
797 int i, err;
798 struct argv_array args = ARGV_ARRAY_INIT;
800 argv_array_pushl(&args, "fetch-pack", "--stateless-rpc",
801 "--stdin", "--lock-pack", NULL);
802 if (options.followtags)
803 argv_array_push(&args, "--include-tag");
804 if (options.thin)
805 argv_array_push(&args, "--thin");
806 if (options.verbosity >= 3)
807 argv_array_pushl(&args, "-v", "-v", NULL);
808 if (options.check_self_contained_and_connected)
809 argv_array_push(&args, "--check-self-contained-and-connected");
810 if (options.cloning)
811 argv_array_push(&args, "--cloning");
812 if (options.update_shallow)
813 argv_array_push(&args, "--update-shallow");
814 if (!options.progress)
815 argv_array_push(&args, "--no-progress");
816 if (options.depth)
817 argv_array_pushf(&args, "--depth=%lu", options.depth);
818 if (options.deepen_since)
819 argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since);
820 for (i = 0; i < options.deepen_not.nr; i++)
821 argv_array_pushf(&args, "--shallow-exclude=%s",
822 options.deepen_not.items[i].string);
823 if (options.deepen_relative && options.depth)
824 argv_array_push(&args, "--deepen-relative");
825 argv_array_push(&args, url.buf);
827 for (i = 0; i < nr_heads; i++) {
828 struct ref *ref = to_fetch[i];
829 if (!*ref->name)
830 die("cannot fetch by sha1 over smart http");
831 packet_buf_write(&preamble, "%s %s\n",
832 oid_to_hex(&ref->old_oid), ref->name);
834 packet_buf_flush(&preamble);
836 memset(&rpc, 0, sizeof(rpc));
837 rpc.service_name = "git-upload-pack",
838 rpc.argv = args.argv;
839 rpc.stdin_preamble = &preamble;
840 rpc.gzip_request = 1;
842 err = rpc_service(&rpc, heads);
843 if (rpc.result.len)
844 write_or_die(1, rpc.result.buf, rpc.result.len);
845 strbuf_release(&rpc.result);
846 strbuf_release(&preamble);
847 argv_array_clear(&args);
848 return err;
851 static int fetch(int nr_heads, struct ref **to_fetch)
853 struct discovery *d = discover_refs("git-upload-pack", 0);
854 if (d->proto_git)
855 return fetch_git(d, nr_heads, to_fetch);
856 else
857 return fetch_dumb(nr_heads, to_fetch);
860 static void parse_fetch(struct strbuf *buf)
862 struct ref **to_fetch = NULL;
863 struct ref *list_head = NULL;
864 struct ref **list = &list_head;
865 int alloc_heads = 0, nr_heads = 0;
867 do {
868 const char *p;
869 if (skip_prefix(buf->buf, "fetch ", &p)) {
870 const char *name;
871 struct ref *ref;
872 struct object_id old_oid;
874 if (get_oid_hex(p, &old_oid))
875 die("protocol error: expected sha/ref, got %s'", p);
876 if (p[GIT_SHA1_HEXSZ] == ' ')
877 name = p + GIT_SHA1_HEXSZ + 1;
878 else if (!p[GIT_SHA1_HEXSZ])
879 name = "";
880 else
881 die("protocol error: expected sha/ref, got %s'", p);
883 ref = alloc_ref(name);
884 oidcpy(&ref->old_oid, &old_oid);
886 *list = ref;
887 list = &ref->next;
889 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
890 to_fetch[nr_heads++] = ref;
892 else
893 die("http transport does not support %s", buf->buf);
895 strbuf_reset(buf);
896 if (strbuf_getline_lf(buf, stdin) == EOF)
897 return;
898 if (!*buf->buf)
899 break;
900 } while (1);
902 if (fetch(nr_heads, to_fetch))
903 exit(128); /* error already reported */
904 free_refs(list_head);
905 free(to_fetch);
907 printf("\n");
908 fflush(stdout);
909 strbuf_reset(buf);
912 static int push_dav(int nr_spec, char **specs)
914 struct child_process child = CHILD_PROCESS_INIT;
915 size_t i;
917 child.git_cmd = 1;
918 argv_array_push(&child.args, "http-push");
919 argv_array_push(&child.args, "--helper-status");
920 if (options.dry_run)
921 argv_array_push(&child.args, "--dry-run");
922 if (options.verbosity > 1)
923 argv_array_push(&child.args, "--verbose");
924 argv_array_push(&child.args, url.buf);
925 for (i = 0; i < nr_spec; i++)
926 argv_array_push(&child.args, specs[i]);
928 if (run_command(&child))
929 die("git-http-push failed");
930 return 0;
933 static int push_git(struct discovery *heads, int nr_spec, char **specs)
935 struct rpc_state rpc;
936 int i, err;
937 struct argv_array args;
938 struct string_list_item *cas_option;
939 struct strbuf preamble = STRBUF_INIT;
941 argv_array_init(&args);
942 argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
943 NULL);
945 if (options.thin)
946 argv_array_push(&args, "--thin");
947 if (options.dry_run)
948 argv_array_push(&args, "--dry-run");
949 if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
950 argv_array_push(&args, "--signed=yes");
951 else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
952 argv_array_push(&args, "--signed=if-asked");
953 if (options.verbosity == 0)
954 argv_array_push(&args, "--quiet");
955 else if (options.verbosity > 1)
956 argv_array_push(&args, "--verbose");
957 for (i = 0; i < options.push_options.nr; i++)
958 argv_array_pushf(&args, "--push-option=%s",
959 options.push_options.items[i].string);
960 argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
961 for_each_string_list_item(cas_option, &cas_options)
962 argv_array_push(&args, cas_option->string);
963 argv_array_push(&args, url.buf);
965 argv_array_push(&args, "--stdin");
966 for (i = 0; i < nr_spec; i++)
967 packet_buf_write(&preamble, "%s\n", specs[i]);
968 packet_buf_flush(&preamble);
970 memset(&rpc, 0, sizeof(rpc));
971 rpc.service_name = "git-receive-pack",
972 rpc.argv = args.argv;
973 rpc.stdin_preamble = &preamble;
975 err = rpc_service(&rpc, heads);
976 if (rpc.result.len)
977 write_or_die(1, rpc.result.buf, rpc.result.len);
978 strbuf_release(&rpc.result);
979 strbuf_release(&preamble);
980 argv_array_clear(&args);
981 return err;
984 static int push(int nr_spec, char **specs)
986 struct discovery *heads = discover_refs("git-receive-pack", 1);
987 int ret;
989 if (heads->proto_git)
990 ret = push_git(heads, nr_spec, specs);
991 else
992 ret = push_dav(nr_spec, specs);
993 free_discovery(heads);
994 return ret;
997 static void parse_push(struct strbuf *buf)
999 char **specs = NULL;
1000 int alloc_spec = 0, nr_spec = 0, i, ret;
1002 do {
1003 if (starts_with(buf->buf, "push ")) {
1004 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
1005 specs[nr_spec++] = xstrdup(buf->buf + 5);
1007 else
1008 die("http transport does not support %s", buf->buf);
1010 strbuf_reset(buf);
1011 if (strbuf_getline_lf(buf, stdin) == EOF)
1012 goto free_specs;
1013 if (!*buf->buf)
1014 break;
1015 } while (1);
1017 ret = push(nr_spec, specs);
1018 printf("\n");
1019 fflush(stdout);
1021 if (ret)
1022 exit(128); /* error already reported */
1024 free_specs:
1025 for (i = 0; i < nr_spec; i++)
1026 free(specs[i]);
1027 free(specs);
1030 int cmd_main(int argc, const char **argv)
1032 struct strbuf buf = STRBUF_INIT;
1033 int nongit;
1035 setup_git_directory_gently(&nongit);
1036 if (argc < 2) {
1037 error("remote-curl: usage: git remote-curl <remote> [<url>]");
1038 return 1;
1041 options.verbosity = 1;
1042 options.progress = !!isatty(2);
1043 options.thin = 1;
1044 string_list_init(&options.deepen_not, 1);
1045 string_list_init(&options.push_options, 1);
1047 remote = remote_get(argv[1]);
1049 if (argc > 2) {
1050 end_url_with_slash(&url, argv[2]);
1051 } else {
1052 end_url_with_slash(&url, remote->url[0]);
1055 http_init(remote, url.buf, 0);
1057 do {
1058 const char *arg;
1060 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1061 if (ferror(stdin))
1062 error("remote-curl: error reading command stream from git");
1063 return 1;
1065 if (buf.len == 0)
1066 break;
1067 if (starts_with(buf.buf, "fetch ")) {
1068 if (nongit)
1069 die("remote-curl: fetch attempted without a local repo");
1070 parse_fetch(&buf);
1072 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
1073 int for_push = !!strstr(buf.buf + 4, "for-push");
1074 output_refs(get_refs(for_push));
1076 } else if (starts_with(buf.buf, "push ")) {
1077 parse_push(&buf);
1079 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1080 char *value = strchr(arg, ' ');
1081 int result;
1083 if (value)
1084 *value++ = '\0';
1085 else
1086 value = "true";
1088 result = set_option(arg, value);
1089 if (!result)
1090 printf("ok\n");
1091 else if (result < 0)
1092 printf("error invalid value\n");
1093 else
1094 printf("unsupported\n");
1095 fflush(stdout);
1097 } else if (!strcmp(buf.buf, "capabilities")) {
1098 printf("fetch\n");
1099 printf("option\n");
1100 printf("push\n");
1101 printf("check-connectivity\n");
1102 printf("\n");
1103 fflush(stdout);
1104 } else {
1105 error("remote-curl: unknown command '%s' from git", buf.buf);
1106 return 1;
1108 strbuf_reset(&buf);
1109 } while (1);
1111 http_cleanup();
1113 return 0;