http: allow providing extra headers for http requests
[git/git.git] / remote-curl.c
CommitLineData
a2d725b7 1#include "cache.h"
b2141fc1 2#include "config.h"
a2d725b7 3#include "remote.h"
ad6ac124 4#include "connect.h"
a2d725b7
DB
5#include "strbuf.h"
6#include "walker.h"
7#include "http.h"
d01a8e32 8#include "exec_cmd.h"
ae4efe19 9#include "run-command.h"
97cc7bc4 10#include "pkt-line.h"
05c1eb10 11#include "string-list.h"
de1a2fdd 12#include "sideband.h"
222b1212 13#include "argv-array.h"
2501aff8 14#include "credential.h"
16094885 15#include "sha1-array.h"
30261094 16#include "send-pack.h"
ad6ac124 17#include "protocol.h"
a2d725b7 18
37a8768f 19static struct remote *remote;
b227bbc4
JK
20/* always ends with a trailing slash */
21static struct strbuf url = STRBUF_INIT;
37a8768f 22
ef08ef9e
SP
23struct options {
24 int verbosity;
25 unsigned long depth;
508ea882 26 char *deepen_since;
a45a2600 27 struct string_list deepen_not;
511155db 28 struct string_list push_options;
ef08ef9e 29 unsigned progress : 1,
9ba38048 30 check_self_contained_and_connected : 1,
16094885
NTND
31 cloning : 1,
32 update_shallow : 1,
ae4efe19 33 followtags : 1,
de1a2fdd 34 dry_run : 1,
0ea47f9d 35 thin : 1,
30261094 36 /* One of the SEND_PACK_PUSH_CERT_* constants. */
cccf74e2
NTND
37 push_cert : 2,
38 deepen_relative : 1;
ef08ef9e
SP
39};
40static struct options options;
05c1eb10 41static struct string_list cas_options = STRING_LIST_INIT_DUP;
ef08ef9e 42
ef08ef9e
SP
43static int set_option(const char *name, const char *value)
44{
45 if (!strcmp(name, "verbosity")) {
46 char *end;
47 int v = strtol(value, &end, 10);
48 if (value == end || *end)
49 return -1;
50 options.verbosity = v;
51 return 0;
52 }
53 else if (!strcmp(name, "progress")) {
54 if (!strcmp(value, "true"))
55 options.progress = 1;
56 else if (!strcmp(value, "false"))
57 options.progress = 0;
58 else
59 return -1;
249b2004 60 return 0;
ef08ef9e
SP
61 }
62 else if (!strcmp(name, "depth")) {
63 char *end;
64 unsigned long v = strtoul(value, &end, 10);
65 if (value == end || *end)
66 return -1;
67 options.depth = v;
249b2004 68 return 0;
ef08ef9e 69 }
508ea882
NTND
70 else if (!strcmp(name, "deepen-since")) {
71 options.deepen_since = xstrdup(value);
72 return 0;
73 }
a45a2600
NTND
74 else if (!strcmp(name, "deepen-not")) {
75 string_list_append(&options.deepen_not, value);
76 return 0;
77 }
cccf74e2
NTND
78 else if (!strcmp(name, "deepen-relative")) {
79 if (!strcmp(value, "true"))
80 options.deepen_relative = 1;
81 else if (!strcmp(value, "false"))
82 options.deepen_relative = 0;
83 else
84 return -1;
85 return 0;
86 }
ef08ef9e
SP
87 else if (!strcmp(name, "followtags")) {
88 if (!strcmp(value, "true"))
89 options.followtags = 1;
90 else if (!strcmp(value, "false"))
91 options.followtags = 0;
92 else
93 return -1;
249b2004 94 return 0;
ef08ef9e 95 }
ae4efe19
SP
96 else if (!strcmp(name, "dry-run")) {
97 if (!strcmp(value, "true"))
98 options.dry_run = 1;
99 else if (!strcmp(value, "false"))
100 options.dry_run = 0;
101 else
102 return -1;
103 return 0;
104 }
9ba38048
NTND
105 else if (!strcmp(name, "check-connectivity")) {
106 if (!strcmp(value, "true"))
107 options.check_self_contained_and_connected = 1;
108 else if (!strcmp(value, "false"))
109 options.check_self_contained_and_connected = 0;
110 else
111 return -1;
112 return 0;
113 }
05c1eb10
JH
114 else if (!strcmp(name, "cas")) {
115 struct strbuf val = STRBUF_INIT;
116 strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value);
117 string_list_append(&cas_options, val.buf);
118 strbuf_release(&val);
119 return 0;
16094885
NTND
120 } else if (!strcmp(name, "cloning")) {
121 if (!strcmp(value, "true"))
122 options.cloning = 1;
123 else if (!strcmp(value, "false"))
124 options.cloning = 0;
125 else
126 return -1;
127 return 0;
128 } else if (!strcmp(name, "update-shallow")) {
129 if (!strcmp(value, "true"))
130 options.update_shallow = 1;
131 else if (!strcmp(value, "false"))
132 options.update_shallow = 0;
133 else
134 return -1;
135 return 0;
0ea47f9d
JH
136 } else if (!strcmp(name, "pushcert")) {
137 if (!strcmp(value, "true"))
30261094 138 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
0ea47f9d 139 else if (!strcmp(value, "false"))
30261094
DB
140 options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
141 else if (!strcmp(value, "if-asked"))
142 options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
0ea47f9d
JH
143 else
144 return -1;
145 return 0;
511155db
BW
146 } else if (!strcmp(name, "push-option")) {
147 string_list_append(&options.push_options, value);
148 return 0;
c915f11e
EW
149
150#if LIBCURL_VERSION_NUM >= 0x070a08
151 } else if (!strcmp(name, "family")) {
152 if (!strcmp(value, "ipv4"))
153 git_curl_ipresolve = CURL_IPRESOLVE_V4;
154 else if (!strcmp(value, "ipv6"))
155 git_curl_ipresolve = CURL_IPRESOLVE_V6;
156 else if (!strcmp(value, "all"))
157 git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
158 else
159 return -1;
160 return 0;
161#endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
16094885 162 } else {
ef08ef9e
SP
163 return 1 /* unsupported */;
164 }
165}
166
97cc7bc4 167struct discovery {
f08a5d42 168 char *service;
97cc7bc4
SP
169 char *buf_alloc;
170 char *buf;
171 size_t len;
2a455202 172 struct ref *refs;
910650d2 173 struct oid_array shallow;
49e85e95 174 enum protocol_version version;
97cc7bc4
SP
175 unsigned proto_git : 1;
176};
177static struct discovery *last_discovery;
178
b8054bbe
JK
179static struct ref *parse_git_refs(struct discovery *heads, int for_push)
180{
181 struct ref *list = NULL;
ad6ac124
BW
182 struct packet_reader reader;
183
184 packet_reader_init(&reader, -1, heads->buf, heads->len,
185 PACKET_READ_CHOMP_NEWLINE |
186 PACKET_READ_GENTLE_ON_EOF);
187
49e85e95
BW
188 heads->version = discover_version(&reader);
189 switch (heads->version) {
8f6982b4
BW
190 case protocol_v2:
191 die("support for protocol v2 not implemented yet");
192 break;
ad6ac124
BW
193 case protocol_v1:
194 case protocol_v0:
195 get_remote_heads(&reader, &list, for_push ? REF_NORMAL : 0,
196 NULL, &heads->shallow);
197 break;
198 case protocol_unknown_version:
199 BUG("unknown protocol version");
200 }
201
b8054bbe
JK
202 return list;
203}
204
205static struct ref *parse_info_refs(struct discovery *heads)
206{
207 char *data, *start, *mid;
208 char *ref_name;
209 int i = 0;
210
211 struct ref *refs = NULL;
212 struct ref *ref = NULL;
213 struct ref *last_ref = NULL;
214
215 data = heads->buf;
216 start = NULL;
217 mid = data;
218 while (i < heads->len) {
219 if (!start) {
220 start = &data[i];
221 }
222 if (data[i] == '\t')
223 mid = &data[i];
224 if (data[i] == '\n') {
225 if (mid - start != 40)
b227bbc4
JK
226 die("%sinfo/refs not valid: is this a git repository?",
227 url.buf);
b8054bbe
JK
228 data[i] = 0;
229 ref_name = mid + 1;
6f687c21 230 ref = alloc_ref(ref_name);
f4e54d02 231 get_oid_hex(start, &ref->old_oid);
b8054bbe
JK
232 if (!refs)
233 refs = ref;
234 if (last_ref)
235 last_ref->next = ref;
236 last_ref = ref;
237 start = NULL;
238 }
239 i++;
240 }
241
242 ref = alloc_ref("HEAD");
b227bbc4 243 if (!http_fetch_ref(url.buf, ref) &&
b8054bbe
JK
244 !resolve_remote_symref(ref, refs)) {
245 ref->next = refs;
246 refs = ref;
247 } else {
248 free(ref);
249 }
250
251 return refs;
252}
253
97cc7bc4
SP
254static void free_discovery(struct discovery *d)
255{
256 if (d) {
257 if (d == last_discovery)
258 last_discovery = NULL;
ee3051bd 259 free(d->shallow.oid);
97cc7bc4 260 free(d->buf_alloc);
2a455202 261 free_refs(d->refs);
f08a5d42 262 free(d->service);
97cc7bc4
SP
263 free(d);
264 }
265}
266
fc1b774c
JK
267static int show_http_message(struct strbuf *type, struct strbuf *charset,
268 struct strbuf *msg)
426e70d4
JK
269{
270 const char *p, *eol;
271
272 /*
273 * We only show text/plain parts, as other types are likely
274 * to be ugly to look at on the user's terminal.
426e70d4 275 */
bf197fd7 276 if (strcmp(type->buf, "text/plain"))
426e70d4 277 return -1;
fc1b774c
JK
278 if (charset->len)
279 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
426e70d4
JK
280
281 strbuf_trim(msg);
282 if (!msg->len)
283 return -1;
284
285 p = msg->buf;
286 do {
287 eol = strchrnul(p, '\n');
288 fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
289 p = eol + 1;
290 } while(*eol);
291 return 0;
292}
293
24d36f14 294static struct discovery *discover_refs(const char *service, int for_push)
a2d725b7 295{
4656bf47
SP
296 struct strbuf exp = STRBUF_INIT;
297 struct strbuf type = STRBUF_INIT;
fc1b774c 298 struct strbuf charset = STRBUF_INIT;
a2d725b7 299 struct strbuf buffer = STRBUF_INIT;
c65d5692 300 struct strbuf refs_url = STRBUF_INIT;
050ef365 301 struct strbuf effective_url = STRBUF_INIT;
97cc7bc4 302 struct discovery *last = last_discovery;
243c329c 303 int http_ret, maybe_smart = 0;
fcaa6e64 304 struct http_get_options http_options;
a2d725b7 305
97cc7bc4
SP
306 if (last && !strcmp(service, last->service))
307 return last;
308 free_discovery(last);
a2d725b7 309
b227bbc4 310 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
59556548 311 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
02572c2e 312 git_env_bool("GIT_SMART_HTTP", 1)) {
243c329c 313 maybe_smart = 1;
b227bbc4 314 if (!strchr(url.buf, '?'))
c65d5692 315 strbuf_addch(&refs_url, '?');
97cc7bc4 316 else
c65d5692
JK
317 strbuf_addch(&refs_url, '&');
318 strbuf_addf(&refs_url, "service=%s", service);
97cc7bc4 319 }
a2d725b7 320
fcaa6e64
JK
321 memset(&http_options, 0, sizeof(http_options));
322 http_options.content_type = &type;
323 http_options.charset = &charset;
324 http_options.effective_url = &effective_url;
325 http_options.base_url = &url;
50d34137 326 http_options.initial_request = 1;
fcaa6e64
JK
327 http_options.no_cache = 1;
328 http_options.keep_error = 1;
1bbcc224 329
fcaa6e64 330 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
a2d725b7
DB
331 switch (http_ret) {
332 case HTTP_OK:
333 break;
334 case HTTP_MISSING_TARGET:
fc1b774c 335 show_http_message(&type, &charset, &buffer);
b227bbc4 336 die("repository '%s' not found", url.buf);
42653c09 337 case HTTP_NOAUTH:
fc1b774c 338 show_http_message(&type, &charset, &buffer);
b227bbc4 339 die("Authentication failed for '%s'", url.buf);
a2d725b7 340 default:
fc1b774c 341 show_http_message(&type, &charset, &buffer);
b227bbc4 342 die("unable to access '%s': %s", url.buf, curl_errorstr);
a2d725b7
DB
343 }
344
50d34137
JK
345 if (options.verbosity && !starts_with(refs_url.buf, url.buf))
346 warning(_("redirecting to %s"), url.buf);
347
97cc7bc4 348 last= xcalloc(1, sizeof(*last_discovery));
f08a5d42 349 last->service = xstrdup(service);
97cc7bc4
SP
350 last->buf_alloc = strbuf_detach(&buffer, &last->len);
351 last->buf = last->buf_alloc;
352
4656bf47
SP
353 strbuf_addf(&exp, "application/x-%s-advertisement", service);
354 if (maybe_smart &&
355 (5 <= last->len && last->buf[4] == '#') &&
356 !strbuf_cmp(&exp, &type)) {
4981fe75
JK
357 char *line;
358
4656bf47
SP
359 /*
360 * smart HTTP response; validate that the service
97cc7bc4
SP
361 * pkt-line matches our request.
362 */
4981fe75 363 line = packet_read_line_buf(&last->buf, &last->len, NULL);
97cc7bc4 364
4656bf47 365 strbuf_reset(&exp);
97cc7bc4 366 strbuf_addf(&exp, "# service=%s", service);
4981fe75
JK
367 if (strcmp(line, exp.buf))
368 die("invalid server response; got '%s'", line);
97cc7bc4
SP
369 strbuf_release(&exp);
370
371 /* The header can include additional metadata lines, up
372 * until a packet flush marker. Ignore these now, but
373 * in the future we might start to scan them.
374 */
4981fe75
JK
375 while (packet_read_line_buf(&last->buf, &last->len, NULL))
376 ;
97cc7bc4
SP
377
378 last->proto_git = 1;
379 }
380
2a455202
JK
381 if (last->proto_git)
382 last->refs = parse_git_refs(last, for_push);
383 else
384 last->refs = parse_info_refs(last);
385
c65d5692 386 strbuf_release(&refs_url);
4656bf47
SP
387 strbuf_release(&exp);
388 strbuf_release(&type);
fc1b774c 389 strbuf_release(&charset);
050ef365 390 strbuf_release(&effective_url);
97cc7bc4
SP
391 strbuf_release(&buffer);
392 last_discovery = last;
393 return last;
394}
395
97cc7bc4
SP
396static struct ref *get_refs(int for_push)
397{
398 struct discovery *heads;
399
400 if (for_push)
2a455202 401 heads = discover_refs("git-receive-pack", for_push);
97cc7bc4 402 else
2a455202 403 heads = discover_refs("git-upload-pack", for_push);
97cc7bc4 404
2a455202 405 return heads->refs;
97cc7bc4
SP
406}
407
ae4efe19
SP
408static void output_refs(struct ref *refs)
409{
410 struct ref *posn;
411 for (posn = refs; posn; posn = posn->next) {
412 if (posn->symref)
413 printf("@%s %s\n", posn->symref, posn->name);
414 else
f4e54d02 415 printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
ae4efe19
SP
416 }
417 printf("\n");
418 fflush(stdout);
ae4efe19
SP
419}
420
de1a2fdd
SP
421struct rpc_state {
422 const char *service_name;
423 const char **argv;
8150749d 424 struct strbuf *stdin_preamble;
de1a2fdd
SP
425 char *service_url;
426 char *hdr_content_type;
427 char *hdr_accept;
428 char *buf;
429 size_t alloc;
430 size_t len;
431 size_t pos;
432 int in;
433 int out;
296b847c 434 int any_written;
de1a2fdd 435 struct strbuf result;
b8538603 436 unsigned gzip_request : 1;
6c81a990 437 unsigned initial_buffer : 1;
de1a2fdd
SP
438};
439
440static size_t rpc_out(void *ptr, size_t eltsize,
441 size_t nmemb, void *buffer_)
442{
443 size_t max = eltsize * nmemb;
444 struct rpc_state *rpc = buffer_;
445 size_t avail = rpc->len - rpc->pos;
446
447 if (!avail) {
6c81a990 448 rpc->initial_buffer = 0;
4981fe75 449 avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
de1a2fdd
SP
450 if (!avail)
451 return 0;
452 rpc->pos = 0;
453 rpc->len = avail;
454 }
455
48310608 456 if (max < avail)
de1a2fdd
SP
457 avail = max;
458 memcpy(ptr, rpc->buf + rpc->pos, avail);
459 rpc->pos += avail;
460 return avail;
461}
462
6c81a990 463#ifndef NO_CURL_IOCTL
5092d3ec 464static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
6c81a990
MS
465{
466 struct rpc_state *rpc = clientp;
467
468 switch (cmd) {
469 case CURLIOCMD_NOP:
470 return CURLIOE_OK;
471
472 case CURLIOCMD_RESTARTREAD:
473 if (rpc->initial_buffer) {
474 rpc->pos = 0;
475 return CURLIOE_OK;
476 }
b725b270 477 error("unable to rewind rpc post data - try increasing http.postBuffer");
6c81a990
MS
478 return CURLIOE_FAILRESTART;
479
480 default:
481 return CURLIOE_UNKNOWNCMD;
482 }
483}
484#endif
485
a04ff3ec 486static size_t rpc_in(char *ptr, size_t eltsize,
de1a2fdd
SP
487 size_t nmemb, void *buffer_)
488{
489 size_t size = eltsize * nmemb;
490 struct rpc_state *rpc = buffer_;
296b847c
DT
491 if (size)
492 rpc->any_written = 1;
de1a2fdd
SP
493 write_or_die(rpc->in, ptr, size);
494 return size;
495}
496
3a347ed7
JK
497static int run_slot(struct active_request_slot *slot,
498 struct slot_results *results)
206b099d 499{
b81401c1 500 int err;
3a347ed7 501 struct slot_results results_buf;
206b099d 502
3a347ed7
JK
503 if (!results)
504 results = &results_buf;
505
beed336c 506 err = run_one_slot(slot, results);
206b099d 507
b81401c1 508 if (err != HTTP_OK && err != HTTP_REAUTH) {
00540458
SP
509 struct strbuf msg = STRBUF_INIT;
510 if (results->http_code && results->http_code != 200)
511 strbuf_addf(&msg, "HTTP %ld", results->http_code);
512 if (results->curl_result != CURLE_OK) {
513 if (msg.len)
514 strbuf_addch(&msg, ' ');
515 strbuf_addf(&msg, "curl %d", results->curl_result);
516 if (curl_errorstr[0]) {
517 strbuf_addch(&msg, ' ');
518 strbuf_addstr(&msg, curl_errorstr);
519 }
520 }
521 error("RPC failed; %s", msg.buf);
522 strbuf_release(&msg);
206b099d
SP
523 }
524
525 return err;
526}
527
3a347ed7 528static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
206b099d
SP
529{
530 struct active_request_slot *slot;
8cb01e2f 531 struct curl_slist *headers = http_copy_default_headers();
206b099d
SP
532 struct strbuf buf = STRBUF_INIT;
533 int err;
534
535 slot = get_active_slot();
536
537 headers = curl_slist_append(headers, rpc->hdr_content_type);
538 headers = curl_slist_append(headers, rpc->hdr_accept);
539
540 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
541 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
542 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
aa90b969 543 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
206b099d
SP
544 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
545 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
546 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
547 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
548 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
549
3a347ed7 550 err = run_slot(slot, results);
206b099d
SP
551
552 curl_slist_free_all(headers);
553 strbuf_release(&buf);
554 return err;
555}
556
37ee680d
DT
557static curl_off_t xcurl_off_t(ssize_t len) {
558 if (len > maximum_signed_value_of_type(curl_off_t))
559 die("cannot handle pushes this big");
560 return (curl_off_t) len;
561}
562
de1a2fdd
SP
563static int post_rpc(struct rpc_state *rpc)
564{
565 struct active_request_slot *slot;
8cb01e2f 566 struct curl_slist *headers = http_copy_default_headers();
b8538603
SP
567 int use_gzip = rpc->gzip_request;
568 char *gzip_body = NULL;
37711549 569 size_t gzip_size = 0;
206b099d 570 int err, large_request = 0;
c80d96ca 571 int needs_100_continue = 0;
de1a2fdd
SP
572
573 /* Try to load the entire request, if we can fit it into the
574 * allocated buffer space we can use HTTP/1.0 and avoid the
575 * chunked encoding mess.
576 */
577 while (1) {
578 size_t left = rpc->alloc - rpc->len;
579 char *buf = rpc->buf + rpc->len;
580 int n;
581
582 if (left < LARGE_PACKET_MAX) {
583 large_request = 1;
b8538603 584 use_gzip = 0;
de1a2fdd
SP
585 break;
586 }
587
4981fe75 588 n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
de1a2fdd
SP
589 if (!n)
590 break;
591 rpc->len += n;
592 }
593
206b099d 594 if (large_request) {
c80d96ca 595 struct slot_results results;
596
b81401c1 597 do {
c80d96ca 598 err = probe_rpc(rpc, &results);
2501aff8
JK
599 if (err == HTTP_REAUTH)
600 credential_fill(&http_auth);
b81401c1
JK
601 } while (err == HTTP_REAUTH);
602 if (err != HTTP_OK)
603 return -1;
c80d96ca 604
605 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
606 needs_100_continue = 1;
206b099d
SP
607 }
608
abf8df86
JK
609 headers = curl_slist_append(headers, rpc->hdr_content_type);
610 headers = curl_slist_append(headers, rpc->hdr_accept);
c80d96ca 611 headers = curl_slist_append(headers, needs_100_continue ?
612 "Expect: 100-continue" : "Expect:");
abf8df86
JK
613
614retry:
de1a2fdd 615 slot = get_active_slot();
de1a2fdd 616
de1a2fdd 617 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
d21f9794 618 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
de1a2fdd 619 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
aa90b969 620 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
de1a2fdd 621
de1a2fdd
SP
622 if (large_request) {
623 /* The request body is large and the size cannot be predicted.
624 * We must use chunked encoding to send it.
625 */
de1a2fdd 626 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
6c81a990 627 rpc->initial_buffer = 1;
de1a2fdd
SP
628 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
629 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
6c81a990
MS
630#ifndef NO_CURL_IOCTL
631 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
632 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
633#endif
de1a2fdd
SP
634 if (options.verbosity > 1) {
635 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
636 fflush(stderr);
637 }
638
2e736fd5
JK
639 } else if (gzip_body) {
640 /*
641 * If we are looping to retry authentication, then the previous
642 * run will have set up the headers and gzip buffer already,
643 * and we just need to send it.
644 */
645 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
37ee680d 646 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
2e736fd5 647
b8538603
SP
648 } else if (use_gzip && 1024 < rpc->len) {
649 /* The client backend isn't giving us compressed data so
650 * we can try to deflate it ourselves, this may save on.
651 * the transfer time.
652 */
ef49a7a0 653 git_zstream stream;
b8538603
SP
654 int ret;
655
55bb5c91 656 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
df126e10
JK
657 gzip_size = git_deflate_bound(&stream, rpc->len);
658 gzip_body = xmalloc(gzip_size);
b8538603
SP
659
660 stream.next_in = (unsigned char *)rpc->buf;
661 stream.avail_in = rpc->len;
662 stream.next_out = (unsigned char *)gzip_body;
df126e10 663 stream.avail_out = gzip_size;
b8538603 664
55bb5c91 665 ret = git_deflate(&stream, Z_FINISH);
b8538603
SP
666 if (ret != Z_STREAM_END)
667 die("cannot deflate request; zlib deflate error %d", ret);
668
55bb5c91 669 ret = git_deflate_end_gently(&stream);
b8538603
SP
670 if (ret != Z_OK)
671 die("cannot deflate request; zlib end error %d", ret);
672
df126e10 673 gzip_size = stream.total_out;
b8538603
SP
674
675 headers = curl_slist_append(headers, "Content-Encoding: gzip");
676 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
37ee680d 677 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
b8538603
SP
678
679 if (options.verbosity > 1) {
680 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
681 rpc->service_name,
df126e10 682 (unsigned long)rpc->len, (unsigned long)gzip_size);
b8538603
SP
683 fflush(stderr);
684 }
de1a2fdd
SP
685 } else {
686 /* We know the complete request size in advance, use the
687 * more normal Content-Length approach.
688 */
689 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
37ee680d 690 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len));
de1a2fdd
SP
691 if (options.verbosity > 1) {
692 fprintf(stderr, "POST %s (%lu bytes)\n",
693 rpc->service_name, (unsigned long)rpc->len);
694 fflush(stderr);
695 }
696 }
697
698 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
699 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
700 curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
701
296b847c
DT
702
703 rpc->any_written = 0;
3a347ed7 704 err = run_slot(slot, NULL);
2501aff8
JK
705 if (err == HTTP_REAUTH && !large_request) {
706 credential_fill(&http_auth);
abf8df86 707 goto retry;
2501aff8 708 }
b81401c1
JK
709 if (err != HTTP_OK)
710 err = -1;
de1a2fdd 711
296b847c
DT
712 if (!rpc->any_written)
713 err = -1;
714
de1a2fdd 715 curl_slist_free_all(headers);
b8538603 716 free(gzip_body);
de1a2fdd
SP
717 return err;
718}
719
720static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
721{
722 const char *svc = rpc->service_name;
723 struct strbuf buf = STRBUF_INIT;
8150749d 724 struct strbuf *preamble = rpc->stdin_preamble;
d3180279 725 struct child_process client = CHILD_PROCESS_INIT;
de1a2fdd
SP
726 int err = 0;
727
de1a2fdd
SP
728 client.in = -1;
729 client.out = -1;
730 client.git_cmd = 1;
731 client.argv = rpc->argv;
732 if (start_command(&client))
733 exit(1);
8150749d
IT
734 if (preamble)
735 write_or_die(client.in, preamble->buf, preamble->len);
de1a2fdd
SP
736 if (heads)
737 write_or_die(client.in, heads->buf, heads->len);
738
739 rpc->alloc = http_post_buffer;
740 rpc->buf = xmalloc(rpc->alloc);
741 rpc->in = client.in;
742 rpc->out = client.out;
743 strbuf_init(&rpc->result, 0);
744
b227bbc4 745 strbuf_addf(&buf, "%s%s", url.buf, svc);
de1a2fdd
SP
746 rpc->service_url = strbuf_detach(&buf, NULL);
747
748 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
749 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
750
8efa5f62 751 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
de1a2fdd
SP
752 rpc->hdr_accept = strbuf_detach(&buf, NULL);
753
754 while (!err) {
4981fe75 755 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
de1a2fdd
SP
756 if (!n)
757 break;
758 rpc->pos = 0;
759 rpc->len = n;
760 err |= post_rpc(rpc);
761 }
de1a2fdd
SP
762
763 close(client.in);
de1a2fdd 764 client.in = -1;
6cdf0223
SP
765 if (!err) {
766 strbuf_read(&rpc->result, client.out, 0);
767 } else {
768 char buf[4096];
769 for (;;)
770 if (xread(client.out, buf, sizeof(buf)) <= 0)
771 break;
772 }
b4ee10f6
SP
773
774 close(client.out);
de1a2fdd
SP
775 client.out = -1;
776
777 err |= finish_command(&client);
778 free(rpc->service_url);
779 free(rpc->hdr_content_type);
780 free(rpc->hdr_accept);
781 free(rpc->buf);
782 strbuf_release(&buf);
783 return err;
784}
785
292ce46b
SP
786static int fetch_dumb(int nr_heads, struct ref **to_fetch)
787{
26e1e0b2 788 struct walker *walker;
b32fa95f 789 char **targets;
292ce46b
SP
790 int ret, i;
791
b32fa95f 792 ALLOC_ARRAY(targets, nr_heads);
508ea882
NTND
793 if (options.depth || options.deepen_since)
794 die("dumb http transport does not support shallow capabilities");
292ce46b 795 for (i = 0; i < nr_heads; i++)
f4e54d02 796 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
292ce46b 797
b227bbc4 798 walker = get_http_walker(url.buf);
292ce46b
SP
799 walker->get_all = 1;
800 walker->get_tree = 1;
801 walker->get_history = 1;
ef08ef9e 802 walker->get_verbosely = options.verbosity >= 3;
292ce46b
SP
803 walker->get_recover = 0;
804 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
26e1e0b2 805 walker_free(walker);
292ce46b
SP
806
807 for (i = 0; i < nr_heads; i++)
808 free(targets[i]);
809 free(targets);
810
b725b270 811 return ret ? error("fetch failed.") : 0;
292ce46b
SP
812}
813
249b2004
SP
814static int fetch_git(struct discovery *heads,
815 int nr_heads, struct ref **to_fetch)
816{
817 struct rpc_state rpc;
8150749d 818 struct strbuf preamble = STRBUF_INIT;
b5f62ebe
NTND
819 int i, err;
820 struct argv_array args = ARGV_ARRAY_INIT;
821
822 argv_array_pushl(&args, "fetch-pack", "--stateless-rpc",
823 "--stdin", "--lock-pack", NULL);
249b2004 824 if (options.followtags)
b5f62ebe 825 argv_array_push(&args, "--include-tag");
249b2004 826 if (options.thin)
b5f62ebe
NTND
827 argv_array_push(&args, "--thin");
828 if (options.verbosity >= 3)
829 argv_array_pushl(&args, "-v", "-v", NULL);
9ba38048 830 if (options.check_self_contained_and_connected)
b5f62ebe 831 argv_array_push(&args, "--check-self-contained-and-connected");
16094885 832 if (options.cloning)
b5f62ebe 833 argv_array_push(&args, "--cloning");
16094885 834 if (options.update_shallow)
b5f62ebe 835 argv_array_push(&args, "--update-shallow");
249b2004 836 if (!options.progress)
b5f62ebe
NTND
837 argv_array_push(&args, "--no-progress");
838 if (options.depth)
839 argv_array_pushf(&args, "--depth=%lu", options.depth);
508ea882
NTND
840 if (options.deepen_since)
841 argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since);
a45a2600
NTND
842 for (i = 0; i < options.deepen_not.nr; i++)
843 argv_array_pushf(&args, "--shallow-exclude=%s",
844 options.deepen_not.items[i].string);
cccf74e2
NTND
845 if (options.deepen_relative && options.depth)
846 argv_array_push(&args, "--deepen-relative");
b5f62ebe 847 argv_array_push(&args, url.buf);
8150749d 848
249b2004
SP
849 for (i = 0; i < nr_heads; i++) {
850 struct ref *ref = to_fetch[i];
94ee8e2c 851 if (!*ref->name)
249b2004 852 die("cannot fetch by sha1 over smart http");
58f2ed05 853 packet_buf_write(&preamble, "%s %s\n",
f4e54d02 854 oid_to_hex(&ref->old_oid), ref->name);
249b2004 855 }
8150749d 856 packet_buf_flush(&preamble);
249b2004
SP
857
858 memset(&rpc, 0, sizeof(rpc));
859 rpc.service_name = "git-upload-pack",
b5f62ebe 860 rpc.argv = args.argv;
8150749d 861 rpc.stdin_preamble = &preamble;
b8538603 862 rpc.gzip_request = 1;
249b2004
SP
863
864 err = rpc_service(&rpc, heads);
865 if (rpc.result.len)
cdf4fb8e 866 write_or_die(1, rpc.result.buf, rpc.result.len);
249b2004 867 strbuf_release(&rpc.result);
8150749d 868 strbuf_release(&preamble);
b5f62ebe 869 argv_array_clear(&args);
249b2004
SP
870 return err;
871}
872
873static int fetch(int nr_heads, struct ref **to_fetch)
874{
2a455202 875 struct discovery *d = discover_refs("git-upload-pack", 0);
249b2004
SP
876 if (d->proto_git)
877 return fetch_git(d, nr_heads, to_fetch);
878 else
879 return fetch_dumb(nr_heads, to_fetch);
880}
881
292ce46b
SP
882static void parse_fetch(struct strbuf *buf)
883{
884 struct ref **to_fetch = NULL;
885 struct ref *list_head = NULL;
886 struct ref **list = &list_head;
887 int alloc_heads = 0, nr_heads = 0;
888
889 do {
95b567c7
JK
890 const char *p;
891 if (skip_prefix(buf->buf, "fetch ", &p)) {
892 const char *name;
292ce46b 893 struct ref *ref;
8338c911 894 struct object_id old_oid;
292ce46b 895
8338c911 896 if (get_oid_hex(p, &old_oid))
292ce46b 897 die("protocol error: expected sha/ref, got %s'", p);
8338c911 898 if (p[GIT_SHA1_HEXSZ] == ' ')
899 name = p + GIT_SHA1_HEXSZ + 1;
900 else if (!p[GIT_SHA1_HEXSZ])
292ce46b
SP
901 name = "";
902 else
903 die("protocol error: expected sha/ref, got %s'", p);
904
905 ref = alloc_ref(name);
8338c911 906 oidcpy(&ref->old_oid, &old_oid);
292ce46b
SP
907
908 *list = ref;
909 list = &ref->next;
910
911 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
912 to_fetch[nr_heads++] = ref;
913 }
914 else
915 die("http transport does not support %s", buf->buf);
916
917 strbuf_reset(buf);
8f309aeb 918 if (strbuf_getline_lf(buf, stdin) == EOF)
292ce46b
SP
919 return;
920 if (!*buf->buf)
921 break;
922 } while (1);
923
249b2004 924 if (fetch(nr_heads, to_fetch))
292ce46b
SP
925 exit(128); /* error already reported */
926 free_refs(list_head);
927 free(to_fetch);
928
929 printf("\n");
930 fflush(stdout);
931 strbuf_reset(buf);
932}
933
ae4efe19
SP
934static int push_dav(int nr_spec, char **specs)
935{
850d2fec
JK
936 struct child_process child = CHILD_PROCESS_INIT;
937 size_t i;
ae4efe19 938
850d2fec
JK
939 child.git_cmd = 1;
940 argv_array_push(&child.args, "http-push");
941 argv_array_push(&child.args, "--helper-status");
ae4efe19 942 if (options.dry_run)
850d2fec 943 argv_array_push(&child.args, "--dry-run");
ae4efe19 944 if (options.verbosity > 1)
850d2fec
JK
945 argv_array_push(&child.args, "--verbose");
946 argv_array_push(&child.args, url.buf);
ae4efe19 947 for (i = 0; i < nr_spec; i++)
850d2fec 948 argv_array_push(&child.args, specs[i]);
ae4efe19 949
850d2fec
JK
950 if (run_command(&child))
951 die("git-http-push failed");
ae4efe19
SP
952 return 0;
953}
954
de1a2fdd
SP
955static int push_git(struct discovery *heads, int nr_spec, char **specs)
956{
957 struct rpc_state rpc;
222b1212
JH
958 int i, err;
959 struct argv_array args;
05c1eb10 960 struct string_list_item *cas_option;
26be19ba 961 struct strbuf preamble = STRBUF_INIT;
222b1212
JH
962
963 argv_array_init(&args);
964 argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
965 NULL);
de1a2fdd 966
de1a2fdd 967 if (options.thin)
222b1212 968 argv_array_push(&args, "--thin");
de1a2fdd 969 if (options.dry_run)
222b1212 970 argv_array_push(&args, "--dry-run");
30261094
DB
971 if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
972 argv_array_push(&args, "--signed=yes");
973 else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
974 argv_array_push(&args, "--signed=if-asked");
c207e34f 975 if (options.verbosity == 0)
222b1212 976 argv_array_push(&args, "--quiet");
c207e34f 977 else if (options.verbosity > 1)
222b1212 978 argv_array_push(&args, "--verbose");
511155db
BW
979 for (i = 0; i < options.push_options.nr; i++)
980 argv_array_pushf(&args, "--push-option=%s",
981 options.push_options.items[i].string);
222b1212 982 argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
05c1eb10 983 for_each_string_list_item(cas_option, &cas_options)
2233ad45 984 argv_array_push(&args, cas_option->string);
b227bbc4 985 argv_array_push(&args, url.buf);
26be19ba
JK
986
987 argv_array_push(&args, "--stdin");
de1a2fdd 988 for (i = 0; i < nr_spec; i++)
26be19ba
JK
989 packet_buf_write(&preamble, "%s\n", specs[i]);
990 packet_buf_flush(&preamble);
de1a2fdd
SP
991
992 memset(&rpc, 0, sizeof(rpc));
993 rpc.service_name = "git-receive-pack",
222b1212 994 rpc.argv = args.argv;
26be19ba 995 rpc.stdin_preamble = &preamble;
de1a2fdd
SP
996
997 err = rpc_service(&rpc, heads);
998 if (rpc.result.len)
cdf4fb8e 999 write_or_die(1, rpc.result.buf, rpc.result.len);
de1a2fdd 1000 strbuf_release(&rpc.result);
26be19ba 1001 strbuf_release(&preamble);
222b1212 1002 argv_array_clear(&args);
de1a2fdd
SP
1003 return err;
1004}
1005
1006static int push(int nr_spec, char **specs)
1007{
2a455202 1008 struct discovery *heads = discover_refs("git-receive-pack", 1);
de1a2fdd
SP
1009 int ret;
1010
1011 if (heads->proto_git)
1012 ret = push_git(heads, nr_spec, specs);
1013 else
1014 ret = push_dav(nr_spec, specs);
1015 free_discovery(heads);
1016 return ret;
1017}
1018
ae4efe19
SP
1019static void parse_push(struct strbuf *buf)
1020{
1021 char **specs = NULL;
5238cbf6 1022 int alloc_spec = 0, nr_spec = 0, i, ret;
ae4efe19
SP
1023
1024 do {
59556548 1025 if (starts_with(buf->buf, "push ")) {
ae4efe19
SP
1026 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
1027 specs[nr_spec++] = xstrdup(buf->buf + 5);
1028 }
1029 else
1030 die("http transport does not support %s", buf->buf);
1031
1032 strbuf_reset(buf);
8f309aeb 1033 if (strbuf_getline_lf(buf, stdin) == EOF)
dc4cd767 1034 goto free_specs;
ae4efe19
SP
1035 if (!*buf->buf)
1036 break;
1037 } while (1);
1038
5238cbf6 1039 ret = push(nr_spec, specs);
ae4efe19
SP
1040 printf("\n");
1041 fflush(stdout);
dc4cd767 1042
5238cbf6
SP
1043 if (ret)
1044 exit(128); /* error already reported */
1045
dc4cd767
JM
1046 free_specs:
1047 for (i = 0; i < nr_spec; i++)
1048 free(specs[i]);
1049 free(specs);
ae4efe19
SP
1050}
1051
3f2e2297 1052int cmd_main(int argc, const char **argv)
a2d725b7 1053{
a2d725b7 1054 struct strbuf buf = STRBUF_INIT;
a45d3d7e 1055 int nongit;
a2d725b7 1056
a45d3d7e 1057 setup_git_directory_gently(&nongit);
a2d725b7 1058 if (argc < 2) {
cdaa4e98 1059 error("remote-curl: usage: git remote-curl <remote> [<url>]");
a2d725b7
DB
1060 return 1;
1061 }
1062
ef08ef9e
SP
1063 options.verbosity = 1;
1064 options.progress = !!isatty(2);
de1a2fdd 1065 options.thin = 1;
a45a2600 1066 string_list_init(&options.deepen_not, 1);
511155db 1067 string_list_init(&options.push_options, 1);
ef08ef9e 1068
a2d725b7
DB
1069 remote = remote_get(argv[1]);
1070
1071 if (argc > 2) {
b227bbc4 1072 end_url_with_slash(&url, argv[2]);
a2d725b7 1073 } else {
b227bbc4 1074 end_url_with_slash(&url, remote->url[0]);
a2d725b7
DB
1075 }
1076
b227bbc4 1077 http_init(remote, url.buf, 0);
888692b7 1078
a2d725b7 1079 do {
95b567c7
JK
1080 const char *arg;
1081
8f309aeb 1082 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1843f0ce 1083 if (ferror(stdin))
cdaa4e98 1084 error("remote-curl: error reading command stream from git");
1843f0ce
SR
1085 return 1;
1086 }
1087 if (buf.len == 0)
a2d725b7 1088 break;
59556548 1089 if (starts_with(buf.buf, "fetch ")) {
a45d3d7e 1090 if (nongit)
cdaa4e98 1091 die("remote-curl: fetch attempted without a local repo");
292ce46b
SP
1092 parse_fetch(&buf);
1093
59556548 1094 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
97cc7bc4
SP
1095 int for_push = !!strstr(buf.buf + 4, "for-push");
1096 output_refs(get_refs(for_push));
ae4efe19 1097
59556548 1098 } else if (starts_with(buf.buf, "push ")) {
ae4efe19
SP
1099 parse_push(&buf);
1100
95b567c7
JK
1101 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1102 char *value = strchr(arg, ' ');
ef08ef9e
SP
1103 int result;
1104
1105 if (value)
1106 *value++ = '\0';
1107 else
1108 value = "true";
1109
95b567c7 1110 result = set_option(arg, value);
ef08ef9e
SP
1111 if (!result)
1112 printf("ok\n");
1113 else if (result < 0)
1114 printf("error invalid value\n");
1115 else
1116 printf("unsupported\n");
a2d725b7 1117 fflush(stdout);
ef08ef9e 1118
a2d725b7
DB
1119 } else if (!strcmp(buf.buf, "capabilities")) {
1120 printf("fetch\n");
ef08ef9e 1121 printf("option\n");
ae4efe19 1122 printf("push\n");
9ba38048 1123 printf("check-connectivity\n");
a2d725b7
DB
1124 printf("\n");
1125 fflush(stdout);
1126 } else {
cdaa4e98 1127 error("remote-curl: unknown command '%s' from git", buf.buf);
a2d725b7
DB
1128 return 1;
1129 }
1130 strbuf_reset(&buf);
1131 } while (1);
888692b7
TRC
1132
1133 http_cleanup();
1134
a2d725b7
DB
1135 return 0;
1136}