t5545: factor out http repository setup
[git/git.git] / remote-curl.c
CommitLineData
a2d725b7 1#include "cache.h"
b2141fc1 2#include "config.h"
a2d725b7
DB
3#include "remote.h"
4#include "strbuf.h"
5#include "walker.h"
6#include "http.h"
d01a8e32 7#include "exec_cmd.h"
ae4efe19 8#include "run-command.h"
97cc7bc4 9#include "pkt-line.h"
05c1eb10 10#include "string-list.h"
de1a2fdd 11#include "sideband.h"
222b1212 12#include "argv-array.h"
2501aff8 13#include "credential.h"
16094885 14#include "sha1-array.h"
30261094 15#include "send-pack.h"
a2d725b7 16
37a8768f 17static struct remote *remote;
b227bbc4
JK
18/* always ends with a trailing slash */
19static struct strbuf url = STRBUF_INIT;
37a8768f 20
ef08ef9e
SP
21struct options {
22 int verbosity;
23 unsigned long depth;
508ea882 24 char *deepen_since;
a45a2600 25 struct string_list deepen_not;
511155db 26 struct string_list push_options;
ef08ef9e 27 unsigned progress : 1,
9ba38048 28 check_self_contained_and_connected : 1,
16094885
NTND
29 cloning : 1,
30 update_shallow : 1,
ae4efe19 31 followtags : 1,
de1a2fdd 32 dry_run : 1,
0ea47f9d 33 thin : 1,
30261094 34 /* One of the SEND_PACK_PUSH_CERT_* constants. */
cccf74e2
NTND
35 push_cert : 2,
36 deepen_relative : 1;
ef08ef9e
SP
37};
38static struct options options;
05c1eb10 39static struct string_list cas_options = STRING_LIST_INIT_DUP;
ef08ef9e 40
ef08ef9e
SP
41static int set_option(const char *name, const char *value)
42{
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;
50 }
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;
249b2004 58 return 0;
ef08ef9e
SP
59 }
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;
249b2004 66 return 0;
ef08ef9e 67 }
508ea882
NTND
68 else if (!strcmp(name, "deepen-since")) {
69 options.deepen_since = xstrdup(value);
70 return 0;
71 }
a45a2600
NTND
72 else if (!strcmp(name, "deepen-not")) {
73 string_list_append(&options.deepen_not, value);
74 return 0;
75 }
cccf74e2
NTND
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;
84 }
ef08ef9e
SP
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;
249b2004 92 return 0;
ef08ef9e 93 }
ae4efe19
SP
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;
102 }
9ba38048
NTND
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;
111 }
05c1eb10
JH
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;
16094885
NTND
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;
0ea47f9d
JH
134 } else if (!strcmp(name, "pushcert")) {
135 if (!strcmp(value, "true"))
30261094 136 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
0ea47f9d 137 else if (!strcmp(value, "false"))
30261094
DB
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;
0ea47f9d
JH
141 else
142 return -1;
143 return 0;
511155db
BW
144 } else if (!strcmp(name, "push-option")) {
145 string_list_append(&options.push_options, value);
146 return 0;
c915f11e
EW
147
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 */
16094885 160 } else {
ef08ef9e
SP
161 return 1 /* unsupported */;
162 }
163}
164
97cc7bc4
SP
165struct discovery {
166 const char *service;
167 char *buf_alloc;
168 char *buf;
169 size_t len;
2a455202 170 struct ref *refs;
910650d2 171 struct oid_array shallow;
97cc7bc4
SP
172 unsigned proto_git : 1;
173};
174static struct discovery *last_discovery;
175
b8054bbe
JK
176static struct ref *parse_git_refs(struct discovery *heads, int for_push)
177{
178 struct ref *list = NULL;
179 get_remote_heads(-1, heads->buf, heads->len, &list,
16094885 180 for_push ? REF_NORMAL : 0, NULL, &heads->shallow);
b8054bbe
JK
181 return list;
182}
183
184static struct ref *parse_info_refs(struct discovery *heads)
185{
186 char *data, *start, *mid;
187 char *ref_name;
188 int i = 0;
189
190 struct ref *refs = NULL;
191 struct ref *ref = NULL;
192 struct ref *last_ref = NULL;
193
194 data = heads->buf;
195 start = NULL;
196 mid = data;
197 while (i < heads->len) {
198 if (!start) {
199 start = &data[i];
200 }
201 if (data[i] == '\t')
202 mid = &data[i];
203 if (data[i] == '\n') {
204 if (mid - start != 40)
b227bbc4
JK
205 die("%sinfo/refs not valid: is this a git repository?",
206 url.buf);
b8054bbe
JK
207 data[i] = 0;
208 ref_name = mid + 1;
6f687c21 209 ref = alloc_ref(ref_name);
f4e54d02 210 get_oid_hex(start, &ref->old_oid);
b8054bbe
JK
211 if (!refs)
212 refs = ref;
213 if (last_ref)
214 last_ref->next = ref;
215 last_ref = ref;
216 start = NULL;
217 }
218 i++;
219 }
220
221 ref = alloc_ref("HEAD");
b227bbc4 222 if (!http_fetch_ref(url.buf, ref) &&
b8054bbe
JK
223 !resolve_remote_symref(ref, refs)) {
224 ref->next = refs;
225 refs = ref;
226 } else {
227 free(ref);
228 }
229
230 return refs;
231}
232
97cc7bc4
SP
233static void free_discovery(struct discovery *d)
234{
235 if (d) {
236 if (d == last_discovery)
237 last_discovery = NULL;
ee3051bd 238 free(d->shallow.oid);
97cc7bc4 239 free(d->buf_alloc);
2a455202 240 free_refs(d->refs);
97cc7bc4
SP
241 free(d);
242 }
243}
244
fc1b774c
JK
245static int show_http_message(struct strbuf *type, struct strbuf *charset,
246 struct strbuf *msg)
426e70d4
JK
247{
248 const char *p, *eol;
249
250 /*
251 * We only show text/plain parts, as other types are likely
252 * to be ugly to look at on the user's terminal.
426e70d4 253 */
bf197fd7 254 if (strcmp(type->buf, "text/plain"))
426e70d4 255 return -1;
fc1b774c
JK
256 if (charset->len)
257 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
426e70d4
JK
258
259 strbuf_trim(msg);
260 if (!msg->len)
261 return -1;
262
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;
270}
271
24d36f14 272static struct discovery *discover_refs(const char *service, int for_push)
a2d725b7 273{
4656bf47
SP
274 struct strbuf exp = STRBUF_INIT;
275 struct strbuf type = STRBUF_INIT;
fc1b774c 276 struct strbuf charset = STRBUF_INIT;
a2d725b7 277 struct strbuf buffer = STRBUF_INIT;
c65d5692 278 struct strbuf refs_url = STRBUF_INIT;
050ef365 279 struct strbuf effective_url = STRBUF_INIT;
97cc7bc4 280 struct discovery *last = last_discovery;
243c329c 281 int http_ret, maybe_smart = 0;
fcaa6e64 282 struct http_get_options http_options;
a2d725b7 283
97cc7bc4
SP
284 if (last && !strcmp(service, last->service))
285 return last;
286 free_discovery(last);
a2d725b7 287
b227bbc4 288 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
59556548 289 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
02572c2e 290 git_env_bool("GIT_SMART_HTTP", 1)) {
243c329c 291 maybe_smart = 1;
b227bbc4 292 if (!strchr(url.buf, '?'))
c65d5692 293 strbuf_addch(&refs_url, '?');
97cc7bc4 294 else
c65d5692
JK
295 strbuf_addch(&refs_url, '&');
296 strbuf_addf(&refs_url, "service=%s", service);
97cc7bc4 297 }
a2d725b7 298
fcaa6e64
JK
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;
50d34137 304 http_options.initial_request = 1;
fcaa6e64
JK
305 http_options.no_cache = 1;
306 http_options.keep_error = 1;
1bbcc224 307
fcaa6e64 308 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
a2d725b7
DB
309 switch (http_ret) {
310 case HTTP_OK:
311 break;
312 case HTTP_MISSING_TARGET:
fc1b774c 313 show_http_message(&type, &charset, &buffer);
b227bbc4 314 die("repository '%s' not found", url.buf);
42653c09 315 case HTTP_NOAUTH:
fc1b774c 316 show_http_message(&type, &charset, &buffer);
b227bbc4 317 die("Authentication failed for '%s'", url.buf);
a2d725b7 318 default:
fc1b774c 319 show_http_message(&type, &charset, &buffer);
b227bbc4 320 die("unable to access '%s': %s", url.buf, curl_errorstr);
a2d725b7
DB
321 }
322
50d34137
JK
323 if (options.verbosity && !starts_with(refs_url.buf, url.buf))
324 warning(_("redirecting to %s"), url.buf);
325
97cc7bc4
SP
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;
330
4656bf47
SP
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)) {
4981fe75
JK
335 char *line;
336
4656bf47
SP
337 /*
338 * smart HTTP response; validate that the service
97cc7bc4
SP
339 * pkt-line matches our request.
340 */
4981fe75 341 line = packet_read_line_buf(&last->buf, &last->len, NULL);
97cc7bc4 342
4656bf47 343 strbuf_reset(&exp);
97cc7bc4 344 strbuf_addf(&exp, "# service=%s", service);
4981fe75
JK
345 if (strcmp(line, exp.buf))
346 die("invalid server response; got '%s'", line);
97cc7bc4
SP
347 strbuf_release(&exp);
348
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.
352 */
4981fe75
JK
353 while (packet_read_line_buf(&last->buf, &last->len, NULL))
354 ;
97cc7bc4
SP
355
356 last->proto_git = 1;
357 }
358
2a455202
JK
359 if (last->proto_git)
360 last->refs = parse_git_refs(last, for_push);
361 else
362 last->refs = parse_info_refs(last);
363
c65d5692 364 strbuf_release(&refs_url);
4656bf47
SP
365 strbuf_release(&exp);
366 strbuf_release(&type);
fc1b774c 367 strbuf_release(&charset);
050ef365 368 strbuf_release(&effective_url);
97cc7bc4
SP
369 strbuf_release(&buffer);
370 last_discovery = last;
371 return last;
372}
373
97cc7bc4
SP
374static struct ref *get_refs(int for_push)
375{
376 struct discovery *heads;
377
378 if (for_push)
2a455202 379 heads = discover_refs("git-receive-pack", for_push);
97cc7bc4 380 else
2a455202 381 heads = discover_refs("git-upload-pack", for_push);
97cc7bc4 382
2a455202 383 return heads->refs;
97cc7bc4
SP
384}
385
ae4efe19
SP
386static void output_refs(struct ref *refs)
387{
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
f4e54d02 393 printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
ae4efe19
SP
394 }
395 printf("\n");
396 fflush(stdout);
ae4efe19
SP
397}
398
de1a2fdd
SP
399struct rpc_state {
400 const char *service_name;
401 const char **argv;
8150749d 402 struct strbuf *stdin_preamble;
de1a2fdd
SP
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;
296b847c 412 int any_written;
de1a2fdd 413 struct strbuf result;
b8538603 414 unsigned gzip_request : 1;
6c81a990 415 unsigned initial_buffer : 1;
de1a2fdd
SP
416};
417
418static size_t rpc_out(void *ptr, size_t eltsize,
419 size_t nmemb, void *buffer_)
420{
421 size_t max = eltsize * nmemb;
422 struct rpc_state *rpc = buffer_;
423 size_t avail = rpc->len - rpc->pos;
424
425 if (!avail) {
6c81a990 426 rpc->initial_buffer = 0;
4981fe75 427 avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
de1a2fdd
SP
428 if (!avail)
429 return 0;
430 rpc->pos = 0;
431 rpc->len = avail;
432 }
433
48310608 434 if (max < avail)
de1a2fdd
SP
435 avail = max;
436 memcpy(ptr, rpc->buf + rpc->pos, avail);
437 rpc->pos += avail;
438 return avail;
439}
440
6c81a990 441#ifndef NO_CURL_IOCTL
5092d3ec 442static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
6c81a990
MS
443{
444 struct rpc_state *rpc = clientp;
445
446 switch (cmd) {
447 case CURLIOCMD_NOP:
448 return CURLIOE_OK;
449
450 case CURLIOCMD_RESTARTREAD:
451 if (rpc->initial_buffer) {
452 rpc->pos = 0;
453 return CURLIOE_OK;
454 }
b725b270 455 error("unable to rewind rpc post data - try increasing http.postBuffer");
6c81a990
MS
456 return CURLIOE_FAILRESTART;
457
458 default:
459 return CURLIOE_UNKNOWNCMD;
460 }
461}
462#endif
463
a04ff3ec 464static size_t rpc_in(char *ptr, size_t eltsize,
de1a2fdd
SP
465 size_t nmemb, void *buffer_)
466{
467 size_t size = eltsize * nmemb;
468 struct rpc_state *rpc = buffer_;
296b847c
DT
469 if (size)
470 rpc->any_written = 1;
de1a2fdd
SP
471 write_or_die(rpc->in, ptr, size);
472 return size;
473}
474
3a347ed7
JK
475static int run_slot(struct active_request_slot *slot,
476 struct slot_results *results)
206b099d 477{
b81401c1 478 int err;
3a347ed7 479 struct slot_results results_buf;
206b099d 480
3a347ed7
JK
481 if (!results)
482 results = &results_buf;
483
beed336c 484 err = run_one_slot(slot, results);
206b099d 485
b81401c1 486 if (err != HTTP_OK && err != HTTP_REAUTH) {
00540458
SP
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);
497 }
498 }
499 error("RPC failed; %s", msg.buf);
500 strbuf_release(&msg);
206b099d
SP
501 }
502
503 return err;
504}
505
3a347ed7 506static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
206b099d
SP
507{
508 struct active_request_slot *slot;
8cb01e2f 509 struct curl_slist *headers = http_copy_default_headers();
206b099d
SP
510 struct strbuf buf = STRBUF_INIT;
511 int err;
512
513 slot = get_active_slot();
514
515 headers = curl_slist_append(headers, rpc->hdr_content_type);
516 headers = curl_slist_append(headers, rpc->hdr_accept);
517
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);
aa90b969 521 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
206b099d
SP
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);
527
3a347ed7 528 err = run_slot(slot, results);
206b099d
SP
529
530 curl_slist_free_all(headers);
531 strbuf_release(&buf);
532 return err;
533}
534
37ee680d
DT
535static 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;
539}
540
de1a2fdd
SP
541static int post_rpc(struct rpc_state *rpc)
542{
543 struct active_request_slot *slot;
8cb01e2f 544 struct curl_slist *headers = http_copy_default_headers();
b8538603
SP
545 int use_gzip = rpc->gzip_request;
546 char *gzip_body = NULL;
37711549 547 size_t gzip_size = 0;
206b099d 548 int err, large_request = 0;
c80d96ca 549 int needs_100_continue = 0;
de1a2fdd
SP
550
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.
554 */
555 while (1) {
556 size_t left = rpc->alloc - rpc->len;
557 char *buf = rpc->buf + rpc->len;
558 int n;
559
560 if (left < LARGE_PACKET_MAX) {
561 large_request = 1;
b8538603 562 use_gzip = 0;
de1a2fdd
SP
563 break;
564 }
565
4981fe75 566 n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
de1a2fdd
SP
567 if (!n)
568 break;
569 rpc->len += n;
570 }
571
206b099d 572 if (large_request) {
c80d96ca 573 struct slot_results results;
574
b81401c1 575 do {
c80d96ca 576 err = probe_rpc(rpc, &results);
2501aff8
JK
577 if (err == HTTP_REAUTH)
578 credential_fill(&http_auth);
b81401c1
JK
579 } while (err == HTTP_REAUTH);
580 if (err != HTTP_OK)
581 return -1;
c80d96ca 582
583 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
584 needs_100_continue = 1;
206b099d
SP
585 }
586
abf8df86
JK
587 headers = curl_slist_append(headers, rpc->hdr_content_type);
588 headers = curl_slist_append(headers, rpc->hdr_accept);
c80d96ca 589 headers = curl_slist_append(headers, needs_100_continue ?
590 "Expect: 100-continue" : "Expect:");
abf8df86
JK
591
592retry:
de1a2fdd 593 slot = get_active_slot();
de1a2fdd 594
de1a2fdd 595 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
d21f9794 596 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
de1a2fdd 597 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
aa90b969 598 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
de1a2fdd 599
de1a2fdd
SP
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.
603 */
de1a2fdd 604 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
6c81a990 605 rpc->initial_buffer = 1;
de1a2fdd
SP
606 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
607 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
6c81a990
MS
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
de1a2fdd
SP
612 if (options.verbosity > 1) {
613 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
614 fflush(stderr);
615 }
616
2e736fd5
JK
617 } else if (gzip_body) {
618 /*
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.
622 */
623 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
37ee680d 624 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
2e736fd5 625
b8538603
SP
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.
630 */
ef49a7a0 631 git_zstream stream;
b8538603
SP
632 int ret;
633
55bb5c91 634 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
df126e10
JK
635 gzip_size = git_deflate_bound(&stream, rpc->len);
636 gzip_body = xmalloc(gzip_size);
b8538603
SP
637
638 stream.next_in = (unsigned char *)rpc->buf;
639 stream.avail_in = rpc->len;
640 stream.next_out = (unsigned char *)gzip_body;
df126e10 641 stream.avail_out = gzip_size;
b8538603 642
55bb5c91 643 ret = git_deflate(&stream, Z_FINISH);
b8538603
SP
644 if (ret != Z_STREAM_END)
645 die("cannot deflate request; zlib deflate error %d", ret);
646
55bb5c91 647 ret = git_deflate_end_gently(&stream);
b8538603
SP
648 if (ret != Z_OK)
649 die("cannot deflate request; zlib end error %d", ret);
650
df126e10 651 gzip_size = stream.total_out;
b8538603
SP
652
653 headers = curl_slist_append(headers, "Content-Encoding: gzip");
654 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
37ee680d 655 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
b8538603
SP
656
657 if (options.verbosity > 1) {
658 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
659 rpc->service_name,
df126e10 660 (unsigned long)rpc->len, (unsigned long)gzip_size);
b8538603
SP
661 fflush(stderr);
662 }
de1a2fdd
SP
663 } else {
664 /* We know the complete request size in advance, use the
665 * more normal Content-Length approach.
666 */
667 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
37ee680d 668 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len));
de1a2fdd
SP
669 if (options.verbosity > 1) {
670 fprintf(stderr, "POST %s (%lu bytes)\n",
671 rpc->service_name, (unsigned long)rpc->len);
672 fflush(stderr);
673 }
674 }
675
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);
679
296b847c
DT
680
681 rpc->any_written = 0;
3a347ed7 682 err = run_slot(slot, NULL);
2501aff8
JK
683 if (err == HTTP_REAUTH && !large_request) {
684 credential_fill(&http_auth);
abf8df86 685 goto retry;
2501aff8 686 }
b81401c1
JK
687 if (err != HTTP_OK)
688 err = -1;
de1a2fdd 689
296b847c
DT
690 if (!rpc->any_written)
691 err = -1;
692
de1a2fdd 693 curl_slist_free_all(headers);
b8538603 694 free(gzip_body);
de1a2fdd
SP
695 return err;
696}
697
698static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
699{
700 const char *svc = rpc->service_name;
701 struct strbuf buf = STRBUF_INIT;
8150749d 702 struct strbuf *preamble = rpc->stdin_preamble;
d3180279 703 struct child_process client = CHILD_PROCESS_INIT;
de1a2fdd
SP
704 int err = 0;
705
de1a2fdd
SP
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);
8150749d
IT
712 if (preamble)
713 write_or_die(client.in, preamble->buf, preamble->len);
de1a2fdd
SP
714 if (heads)
715 write_or_die(client.in, heads->buf, heads->len);
716
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);
722
b227bbc4 723 strbuf_addf(&buf, "%s%s", url.buf, svc);
de1a2fdd
SP
724 rpc->service_url = strbuf_detach(&buf, NULL);
725
726 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
727 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
728
8efa5f62 729 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
de1a2fdd
SP
730 rpc->hdr_accept = strbuf_detach(&buf, NULL);
731
732 while (!err) {
4981fe75 733 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
de1a2fdd
SP
734 if (!n)
735 break;
736 rpc->pos = 0;
737 rpc->len = n;
738 err |= post_rpc(rpc);
739 }
de1a2fdd
SP
740
741 close(client.in);
de1a2fdd 742 client.in = -1;
6cdf0223
SP
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;
750 }
b4ee10f6
SP
751
752 close(client.out);
de1a2fdd
SP
753 client.out = -1;
754
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;
762}
763
292ce46b
SP
764static int fetch_dumb(int nr_heads, struct ref **to_fetch)
765{
26e1e0b2 766 struct walker *walker;
b32fa95f 767 char **targets;
292ce46b
SP
768 int ret, i;
769
b32fa95f 770 ALLOC_ARRAY(targets, nr_heads);
508ea882
NTND
771 if (options.depth || options.deepen_since)
772 die("dumb http transport does not support shallow capabilities");
292ce46b 773 for (i = 0; i < nr_heads; i++)
f4e54d02 774 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
292ce46b 775
b227bbc4 776 walker = get_http_walker(url.buf);
292ce46b
SP
777 walker->get_all = 1;
778 walker->get_tree = 1;
779 walker->get_history = 1;
ef08ef9e 780 walker->get_verbosely = options.verbosity >= 3;
292ce46b
SP
781 walker->get_recover = 0;
782 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
26e1e0b2 783 walker_free(walker);
292ce46b
SP
784
785 for (i = 0; i < nr_heads; i++)
786 free(targets[i]);
787 free(targets);
788
b725b270 789 return ret ? error("fetch failed.") : 0;
292ce46b
SP
790}
791
249b2004
SP
792static int fetch_git(struct discovery *heads,
793 int nr_heads, struct ref **to_fetch)
794{
795 struct rpc_state rpc;
8150749d 796 struct strbuf preamble = STRBUF_INIT;
b5f62ebe
NTND
797 int i, err;
798 struct argv_array args = ARGV_ARRAY_INIT;
799
800 argv_array_pushl(&args, "fetch-pack", "--stateless-rpc",
801 "--stdin", "--lock-pack", NULL);
249b2004 802 if (options.followtags)
b5f62ebe 803 argv_array_push(&args, "--include-tag");
249b2004 804 if (options.thin)
b5f62ebe
NTND
805 argv_array_push(&args, "--thin");
806 if (options.verbosity >= 3)
807 argv_array_pushl(&args, "-v", "-v", NULL);
9ba38048 808 if (options.check_self_contained_and_connected)
b5f62ebe 809 argv_array_push(&args, "--check-self-contained-and-connected");
16094885 810 if (options.cloning)
b5f62ebe 811 argv_array_push(&args, "--cloning");
16094885 812 if (options.update_shallow)
b5f62ebe 813 argv_array_push(&args, "--update-shallow");
249b2004 814 if (!options.progress)
b5f62ebe
NTND
815 argv_array_push(&args, "--no-progress");
816 if (options.depth)
817 argv_array_pushf(&args, "--depth=%lu", options.depth);
508ea882
NTND
818 if (options.deepen_since)
819 argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since);
a45a2600
NTND
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);
cccf74e2
NTND
823 if (options.deepen_relative && options.depth)
824 argv_array_push(&args, "--deepen-relative");
b5f62ebe 825 argv_array_push(&args, url.buf);
8150749d 826
249b2004
SP
827 for (i = 0; i < nr_heads; i++) {
828 struct ref *ref = to_fetch[i];
94ee8e2c 829 if (!*ref->name)
249b2004 830 die("cannot fetch by sha1 over smart http");
58f2ed05 831 packet_buf_write(&preamble, "%s %s\n",
f4e54d02 832 oid_to_hex(&ref->old_oid), ref->name);
249b2004 833 }
8150749d 834 packet_buf_flush(&preamble);
249b2004
SP
835
836 memset(&rpc, 0, sizeof(rpc));
837 rpc.service_name = "git-upload-pack",
b5f62ebe 838 rpc.argv = args.argv;
8150749d 839 rpc.stdin_preamble = &preamble;
b8538603 840 rpc.gzip_request = 1;
249b2004
SP
841
842 err = rpc_service(&rpc, heads);
843 if (rpc.result.len)
cdf4fb8e 844 write_or_die(1, rpc.result.buf, rpc.result.len);
249b2004 845 strbuf_release(&rpc.result);
8150749d 846 strbuf_release(&preamble);
b5f62ebe 847 argv_array_clear(&args);
249b2004
SP
848 return err;
849}
850
851static int fetch(int nr_heads, struct ref **to_fetch)
852{
2a455202 853 struct discovery *d = discover_refs("git-upload-pack", 0);
249b2004
SP
854 if (d->proto_git)
855 return fetch_git(d, nr_heads, to_fetch);
856 else
857 return fetch_dumb(nr_heads, to_fetch);
858}
859
292ce46b
SP
860static void parse_fetch(struct strbuf *buf)
861{
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;
866
867 do {
95b567c7
JK
868 const char *p;
869 if (skip_prefix(buf->buf, "fetch ", &p)) {
870 const char *name;
292ce46b 871 struct ref *ref;
8338c911 872 struct object_id old_oid;
292ce46b 873
8338c911 874 if (get_oid_hex(p, &old_oid))
292ce46b 875 die("protocol error: expected sha/ref, got %s'", p);
8338c911 876 if (p[GIT_SHA1_HEXSZ] == ' ')
877 name = p + GIT_SHA1_HEXSZ + 1;
878 else if (!p[GIT_SHA1_HEXSZ])
292ce46b
SP
879 name = "";
880 else
881 die("protocol error: expected sha/ref, got %s'", p);
882
883 ref = alloc_ref(name);
8338c911 884 oidcpy(&ref->old_oid, &old_oid);
292ce46b
SP
885
886 *list = ref;
887 list = &ref->next;
888
889 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
890 to_fetch[nr_heads++] = ref;
891 }
892 else
893 die("http transport does not support %s", buf->buf);
894
895 strbuf_reset(buf);
8f309aeb 896 if (strbuf_getline_lf(buf, stdin) == EOF)
292ce46b
SP
897 return;
898 if (!*buf->buf)
899 break;
900 } while (1);
901
249b2004 902 if (fetch(nr_heads, to_fetch))
292ce46b
SP
903 exit(128); /* error already reported */
904 free_refs(list_head);
905 free(to_fetch);
906
907 printf("\n");
908 fflush(stdout);
909 strbuf_reset(buf);
910}
911
ae4efe19
SP
912static int push_dav(int nr_spec, char **specs)
913{
850d2fec
JK
914 struct child_process child = CHILD_PROCESS_INIT;
915 size_t i;
ae4efe19 916
850d2fec
JK
917 child.git_cmd = 1;
918 argv_array_push(&child.args, "http-push");
919 argv_array_push(&child.args, "--helper-status");
ae4efe19 920 if (options.dry_run)
850d2fec 921 argv_array_push(&child.args, "--dry-run");
ae4efe19 922 if (options.verbosity > 1)
850d2fec
JK
923 argv_array_push(&child.args, "--verbose");
924 argv_array_push(&child.args, url.buf);
ae4efe19 925 for (i = 0; i < nr_spec; i++)
850d2fec 926 argv_array_push(&child.args, specs[i]);
ae4efe19 927
850d2fec
JK
928 if (run_command(&child))
929 die("git-http-push failed");
ae4efe19
SP
930 return 0;
931}
932
de1a2fdd
SP
933static int push_git(struct discovery *heads, int nr_spec, char **specs)
934{
935 struct rpc_state rpc;
222b1212
JH
936 int i, err;
937 struct argv_array args;
05c1eb10 938 struct string_list_item *cas_option;
26be19ba 939 struct strbuf preamble = STRBUF_INIT;
222b1212
JH
940
941 argv_array_init(&args);
942 argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
943 NULL);
de1a2fdd 944
de1a2fdd 945 if (options.thin)
222b1212 946 argv_array_push(&args, "--thin");
de1a2fdd 947 if (options.dry_run)
222b1212 948 argv_array_push(&args, "--dry-run");
30261094
DB
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");
c207e34f 953 if (options.verbosity == 0)
222b1212 954 argv_array_push(&args, "--quiet");
c207e34f 955 else if (options.verbosity > 1)
222b1212 956 argv_array_push(&args, "--verbose");
511155db
BW
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);
222b1212 960 argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
05c1eb10 961 for_each_string_list_item(cas_option, &cas_options)
2233ad45 962 argv_array_push(&args, cas_option->string);
b227bbc4 963 argv_array_push(&args, url.buf);
26be19ba
JK
964
965 argv_array_push(&args, "--stdin");
de1a2fdd 966 for (i = 0; i < nr_spec; i++)
26be19ba
JK
967 packet_buf_write(&preamble, "%s\n", specs[i]);
968 packet_buf_flush(&preamble);
de1a2fdd
SP
969
970 memset(&rpc, 0, sizeof(rpc));
971 rpc.service_name = "git-receive-pack",
222b1212 972 rpc.argv = args.argv;
26be19ba 973 rpc.stdin_preamble = &preamble;
de1a2fdd
SP
974
975 err = rpc_service(&rpc, heads);
976 if (rpc.result.len)
cdf4fb8e 977 write_or_die(1, rpc.result.buf, rpc.result.len);
de1a2fdd 978 strbuf_release(&rpc.result);
26be19ba 979 strbuf_release(&preamble);
222b1212 980 argv_array_clear(&args);
de1a2fdd
SP
981 return err;
982}
983
984static int push(int nr_spec, char **specs)
985{
2a455202 986 struct discovery *heads = discover_refs("git-receive-pack", 1);
de1a2fdd
SP
987 int ret;
988
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;
995}
996
ae4efe19
SP
997static void parse_push(struct strbuf *buf)
998{
999 char **specs = NULL;
5238cbf6 1000 int alloc_spec = 0, nr_spec = 0, i, ret;
ae4efe19
SP
1001
1002 do {
59556548 1003 if (starts_with(buf->buf, "push ")) {
ae4efe19
SP
1004 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
1005 specs[nr_spec++] = xstrdup(buf->buf + 5);
1006 }
1007 else
1008 die("http transport does not support %s", buf->buf);
1009
1010 strbuf_reset(buf);
8f309aeb 1011 if (strbuf_getline_lf(buf, stdin) == EOF)
dc4cd767 1012 goto free_specs;
ae4efe19
SP
1013 if (!*buf->buf)
1014 break;
1015 } while (1);
1016
5238cbf6 1017 ret = push(nr_spec, specs);
ae4efe19
SP
1018 printf("\n");
1019 fflush(stdout);
dc4cd767 1020
5238cbf6
SP
1021 if (ret)
1022 exit(128); /* error already reported */
1023
dc4cd767
JM
1024 free_specs:
1025 for (i = 0; i < nr_spec; i++)
1026 free(specs[i]);
1027 free(specs);
ae4efe19
SP
1028}
1029
3f2e2297 1030int cmd_main(int argc, const char **argv)
a2d725b7 1031{
a2d725b7 1032 struct strbuf buf = STRBUF_INIT;
a45d3d7e 1033 int nongit;
a2d725b7 1034
a45d3d7e 1035 setup_git_directory_gently(&nongit);
a2d725b7 1036 if (argc < 2) {
cdaa4e98 1037 error("remote-curl: usage: git remote-curl <remote> [<url>]");
a2d725b7
DB
1038 return 1;
1039 }
1040
ef08ef9e
SP
1041 options.verbosity = 1;
1042 options.progress = !!isatty(2);
de1a2fdd 1043 options.thin = 1;
a45a2600 1044 string_list_init(&options.deepen_not, 1);
511155db 1045 string_list_init(&options.push_options, 1);
ef08ef9e 1046
a2d725b7
DB
1047 remote = remote_get(argv[1]);
1048
1049 if (argc > 2) {
b227bbc4 1050 end_url_with_slash(&url, argv[2]);
a2d725b7 1051 } else {
b227bbc4 1052 end_url_with_slash(&url, remote->url[0]);
a2d725b7
DB
1053 }
1054
b227bbc4 1055 http_init(remote, url.buf, 0);
888692b7 1056
a2d725b7 1057 do {
95b567c7
JK
1058 const char *arg;
1059
8f309aeb 1060 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1843f0ce 1061 if (ferror(stdin))
cdaa4e98 1062 error("remote-curl: error reading command stream from git");
1843f0ce
SR
1063 return 1;
1064 }
1065 if (buf.len == 0)
a2d725b7 1066 break;
59556548 1067 if (starts_with(buf.buf, "fetch ")) {
a45d3d7e 1068 if (nongit)
cdaa4e98 1069 die("remote-curl: fetch attempted without a local repo");
292ce46b
SP
1070 parse_fetch(&buf);
1071
59556548 1072 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
97cc7bc4
SP
1073 int for_push = !!strstr(buf.buf + 4, "for-push");
1074 output_refs(get_refs(for_push));
ae4efe19 1075
59556548 1076 } else if (starts_with(buf.buf, "push ")) {
ae4efe19
SP
1077 parse_push(&buf);
1078
95b567c7
JK
1079 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1080 char *value = strchr(arg, ' ');
ef08ef9e
SP
1081 int result;
1082
1083 if (value)
1084 *value++ = '\0';
1085 else
1086 value = "true";
1087
95b567c7 1088 result = set_option(arg, value);
ef08ef9e
SP
1089 if (!result)
1090 printf("ok\n");
1091 else if (result < 0)
1092 printf("error invalid value\n");
1093 else
1094 printf("unsupported\n");
a2d725b7 1095 fflush(stdout);
ef08ef9e 1096
a2d725b7
DB
1097 } else if (!strcmp(buf.buf, "capabilities")) {
1098 printf("fetch\n");
ef08ef9e 1099 printf("option\n");
ae4efe19 1100 printf("push\n");
9ba38048 1101 printf("check-connectivity\n");
a2d725b7
DB
1102 printf("\n");
1103 fflush(stdout);
1104 } else {
cdaa4e98 1105 error("remote-curl: unknown command '%s' from git", buf.buf);
a2d725b7
DB
1106 return 1;
1107 }
1108 strbuf_reset(&buf);
1109 } while (1);
888692b7
TRC
1110
1111 http_cleanup();
1112
a2d725b7
DB
1113 return 0;
1114}