sha1-array: convert internal storage for struct sha1_array to object_id
[git/git.git] / remote-curl.c
CommitLineData
a2d725b7
DB
1#include "cache.h"
2#include "remote.h"
3#include "strbuf.h"
4#include "walker.h"
5#include "http.h"
d01a8e32 6#include "exec_cmd.h"
ae4efe19 7#include "run-command.h"
97cc7bc4 8#include "pkt-line.h"
05c1eb10 9#include "string-list.h"
de1a2fdd 10#include "sideband.h"
222b1212 11#include "argv-array.h"
2501aff8 12#include "credential.h"
16094885 13#include "sha1-array.h"
30261094 14#include "send-pack.h"
a2d725b7 15
37a8768f 16static struct remote *remote;
b227bbc4
JK
17/* always ends with a trailing slash */
18static struct strbuf url = STRBUF_INIT;
37a8768f 19
ef08ef9e
SP
20struct options {
21 int verbosity;
22 unsigned long depth;
508ea882 23 char *deepen_since;
a45a2600 24 struct string_list deepen_not;
ef08ef9e 25 unsigned progress : 1,
9ba38048 26 check_self_contained_and_connected : 1,
16094885
NTND
27 cloning : 1,
28 update_shallow : 1,
ae4efe19 29 followtags : 1,
de1a2fdd 30 dry_run : 1,
0ea47f9d 31 thin : 1,
30261094 32 /* One of the SEND_PACK_PUSH_CERT_* constants. */
cccf74e2
NTND
33 push_cert : 2,
34 deepen_relative : 1;
ef08ef9e
SP
35};
36static struct options options;
05c1eb10 37static struct string_list cas_options = STRING_LIST_INIT_DUP;
ef08ef9e 38
ef08ef9e
SP
39static int set_option(const char *name, const char *value)
40{
41 if (!strcmp(name, "verbosity")) {
42 char *end;
43 int v = strtol(value, &end, 10);
44 if (value == end || *end)
45 return -1;
46 options.verbosity = v;
47 return 0;
48 }
49 else if (!strcmp(name, "progress")) {
50 if (!strcmp(value, "true"))
51 options.progress = 1;
52 else if (!strcmp(value, "false"))
53 options.progress = 0;
54 else
55 return -1;
249b2004 56 return 0;
ef08ef9e
SP
57 }
58 else if (!strcmp(name, "depth")) {
59 char *end;
60 unsigned long v = strtoul(value, &end, 10);
61 if (value == end || *end)
62 return -1;
63 options.depth = v;
249b2004 64 return 0;
ef08ef9e 65 }
508ea882
NTND
66 else if (!strcmp(name, "deepen-since")) {
67 options.deepen_since = xstrdup(value);
68 return 0;
69 }
a45a2600
NTND
70 else if (!strcmp(name, "deepen-not")) {
71 string_list_append(&options.deepen_not, value);
72 return 0;
73 }
cccf74e2
NTND
74 else if (!strcmp(name, "deepen-relative")) {
75 if (!strcmp(value, "true"))
76 options.deepen_relative = 1;
77 else if (!strcmp(value, "false"))
78 options.deepen_relative = 0;
79 else
80 return -1;
81 return 0;
82 }
ef08ef9e
SP
83 else if (!strcmp(name, "followtags")) {
84 if (!strcmp(value, "true"))
85 options.followtags = 1;
86 else if (!strcmp(value, "false"))
87 options.followtags = 0;
88 else
89 return -1;
249b2004 90 return 0;
ef08ef9e 91 }
ae4efe19
SP
92 else if (!strcmp(name, "dry-run")) {
93 if (!strcmp(value, "true"))
94 options.dry_run = 1;
95 else if (!strcmp(value, "false"))
96 options.dry_run = 0;
97 else
98 return -1;
99 return 0;
100 }
9ba38048
NTND
101 else if (!strcmp(name, "check-connectivity")) {
102 if (!strcmp(value, "true"))
103 options.check_self_contained_and_connected = 1;
104 else if (!strcmp(value, "false"))
105 options.check_self_contained_and_connected = 0;
106 else
107 return -1;
108 return 0;
109 }
05c1eb10
JH
110 else if (!strcmp(name, "cas")) {
111 struct strbuf val = STRBUF_INIT;
112 strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value);
113 string_list_append(&cas_options, val.buf);
114 strbuf_release(&val);
115 return 0;
16094885
NTND
116 } else if (!strcmp(name, "cloning")) {
117 if (!strcmp(value, "true"))
118 options.cloning = 1;
119 else if (!strcmp(value, "false"))
120 options.cloning = 0;
121 else
122 return -1;
123 return 0;
124 } else if (!strcmp(name, "update-shallow")) {
125 if (!strcmp(value, "true"))
126 options.update_shallow = 1;
127 else if (!strcmp(value, "false"))
128 options.update_shallow = 0;
129 else
130 return -1;
131 return 0;
0ea47f9d
JH
132 } else if (!strcmp(name, "pushcert")) {
133 if (!strcmp(value, "true"))
30261094 134 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
0ea47f9d 135 else if (!strcmp(value, "false"))
30261094
DB
136 options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
137 else if (!strcmp(value, "if-asked"))
138 options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
0ea47f9d
JH
139 else
140 return -1;
141 return 0;
c915f11e
EW
142
143#if LIBCURL_VERSION_NUM >= 0x070a08
144 } else if (!strcmp(name, "family")) {
145 if (!strcmp(value, "ipv4"))
146 git_curl_ipresolve = CURL_IPRESOLVE_V4;
147 else if (!strcmp(value, "ipv6"))
148 git_curl_ipresolve = CURL_IPRESOLVE_V6;
149 else if (!strcmp(value, "all"))
150 git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
151 else
152 return -1;
153 return 0;
154#endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
16094885 155 } else {
ef08ef9e
SP
156 return 1 /* unsupported */;
157 }
158}
159
97cc7bc4
SP
160struct discovery {
161 const char *service;
162 char *buf_alloc;
163 char *buf;
164 size_t len;
2a455202 165 struct ref *refs;
16094885 166 struct sha1_array shallow;
97cc7bc4
SP
167 unsigned proto_git : 1;
168};
169static struct discovery *last_discovery;
170
b8054bbe
JK
171static struct ref *parse_git_refs(struct discovery *heads, int for_push)
172{
173 struct ref *list = NULL;
174 get_remote_heads(-1, heads->buf, heads->len, &list,
16094885 175 for_push ? REF_NORMAL : 0, NULL, &heads->shallow);
b8054bbe
JK
176 return list;
177}
178
179static struct ref *parse_info_refs(struct discovery *heads)
180{
181 char *data, *start, *mid;
182 char *ref_name;
183 int i = 0;
184
185 struct ref *refs = NULL;
186 struct ref *ref = NULL;
187 struct ref *last_ref = NULL;
188
189 data = heads->buf;
190 start = NULL;
191 mid = data;
192 while (i < heads->len) {
193 if (!start) {
194 start = &data[i];
195 }
196 if (data[i] == '\t')
197 mid = &data[i];
198 if (data[i] == '\n') {
199 if (mid - start != 40)
b227bbc4
JK
200 die("%sinfo/refs not valid: is this a git repository?",
201 url.buf);
b8054bbe
JK
202 data[i] = 0;
203 ref_name = mid + 1;
6f687c21 204 ref = alloc_ref(ref_name);
f4e54d02 205 get_oid_hex(start, &ref->old_oid);
b8054bbe
JK
206 if (!refs)
207 refs = ref;
208 if (last_ref)
209 last_ref->next = ref;
210 last_ref = ref;
211 start = NULL;
212 }
213 i++;
214 }
215
216 ref = alloc_ref("HEAD");
b227bbc4 217 if (!http_fetch_ref(url.buf, ref) &&
b8054bbe
JK
218 !resolve_remote_symref(ref, refs)) {
219 ref->next = refs;
220 refs = ref;
221 } else {
222 free(ref);
223 }
224
225 return refs;
226}
227
97cc7bc4
SP
228static void free_discovery(struct discovery *d)
229{
230 if (d) {
231 if (d == last_discovery)
232 last_discovery = NULL;
ee3051bd 233 free(d->shallow.oid);
97cc7bc4 234 free(d->buf_alloc);
2a455202 235 free_refs(d->refs);
97cc7bc4
SP
236 free(d);
237 }
238}
239
fc1b774c
JK
240static int show_http_message(struct strbuf *type, struct strbuf *charset,
241 struct strbuf *msg)
426e70d4
JK
242{
243 const char *p, *eol;
244
245 /*
246 * We only show text/plain parts, as other types are likely
247 * to be ugly to look at on the user's terminal.
426e70d4 248 */
bf197fd7 249 if (strcmp(type->buf, "text/plain"))
426e70d4 250 return -1;
fc1b774c
JK
251 if (charset->len)
252 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
426e70d4
JK
253
254 strbuf_trim(msg);
255 if (!msg->len)
256 return -1;
257
258 p = msg->buf;
259 do {
260 eol = strchrnul(p, '\n');
261 fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
262 p = eol + 1;
263 } while(*eol);
264 return 0;
265}
266
24d36f14 267static struct discovery *discover_refs(const char *service, int for_push)
a2d725b7 268{
4656bf47
SP
269 struct strbuf exp = STRBUF_INIT;
270 struct strbuf type = STRBUF_INIT;
fc1b774c 271 struct strbuf charset = STRBUF_INIT;
a2d725b7 272 struct strbuf buffer = STRBUF_INIT;
c65d5692 273 struct strbuf refs_url = STRBUF_INIT;
050ef365 274 struct strbuf effective_url = STRBUF_INIT;
97cc7bc4 275 struct discovery *last = last_discovery;
243c329c 276 int http_ret, maybe_smart = 0;
fcaa6e64 277 struct http_get_options http_options;
a2d725b7 278
97cc7bc4
SP
279 if (last && !strcmp(service, last->service))
280 return last;
281 free_discovery(last);
a2d725b7 282
b227bbc4 283 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
59556548 284 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
02572c2e 285 git_env_bool("GIT_SMART_HTTP", 1)) {
243c329c 286 maybe_smart = 1;
b227bbc4 287 if (!strchr(url.buf, '?'))
c65d5692 288 strbuf_addch(&refs_url, '?');
97cc7bc4 289 else
c65d5692
JK
290 strbuf_addch(&refs_url, '&');
291 strbuf_addf(&refs_url, "service=%s", service);
97cc7bc4 292 }
a2d725b7 293
fcaa6e64
JK
294 memset(&http_options, 0, sizeof(http_options));
295 http_options.content_type = &type;
296 http_options.charset = &charset;
297 http_options.effective_url = &effective_url;
298 http_options.base_url = &url;
50d34137 299 http_options.initial_request = 1;
fcaa6e64
JK
300 http_options.no_cache = 1;
301 http_options.keep_error = 1;
1bbcc224 302
fcaa6e64 303 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
a2d725b7
DB
304 switch (http_ret) {
305 case HTTP_OK:
306 break;
307 case HTTP_MISSING_TARGET:
fc1b774c 308 show_http_message(&type, &charset, &buffer);
b227bbc4 309 die("repository '%s' not found", url.buf);
42653c09 310 case HTTP_NOAUTH:
fc1b774c 311 show_http_message(&type, &charset, &buffer);
b227bbc4 312 die("Authentication failed for '%s'", url.buf);
a2d725b7 313 default:
fc1b774c 314 show_http_message(&type, &charset, &buffer);
b227bbc4 315 die("unable to access '%s': %s", url.buf, curl_errorstr);
a2d725b7
DB
316 }
317
50d34137
JK
318 if (options.verbosity && !starts_with(refs_url.buf, url.buf))
319 warning(_("redirecting to %s"), url.buf);
320
97cc7bc4
SP
321 last= xcalloc(1, sizeof(*last_discovery));
322 last->service = service;
323 last->buf_alloc = strbuf_detach(&buffer, &last->len);
324 last->buf = last->buf_alloc;
325
4656bf47
SP
326 strbuf_addf(&exp, "application/x-%s-advertisement", service);
327 if (maybe_smart &&
328 (5 <= last->len && last->buf[4] == '#') &&
329 !strbuf_cmp(&exp, &type)) {
4981fe75
JK
330 char *line;
331
4656bf47
SP
332 /*
333 * smart HTTP response; validate that the service
97cc7bc4
SP
334 * pkt-line matches our request.
335 */
4981fe75 336 line = packet_read_line_buf(&last->buf, &last->len, NULL);
97cc7bc4 337
4656bf47 338 strbuf_reset(&exp);
97cc7bc4 339 strbuf_addf(&exp, "# service=%s", service);
4981fe75
JK
340 if (strcmp(line, exp.buf))
341 die("invalid server response; got '%s'", line);
97cc7bc4
SP
342 strbuf_release(&exp);
343
344 /* The header can include additional metadata lines, up
345 * until a packet flush marker. Ignore these now, but
346 * in the future we might start to scan them.
347 */
4981fe75
JK
348 while (packet_read_line_buf(&last->buf, &last->len, NULL))
349 ;
97cc7bc4
SP
350
351 last->proto_git = 1;
352 }
353
2a455202
JK
354 if (last->proto_git)
355 last->refs = parse_git_refs(last, for_push);
356 else
357 last->refs = parse_info_refs(last);
358
c65d5692 359 strbuf_release(&refs_url);
4656bf47
SP
360 strbuf_release(&exp);
361 strbuf_release(&type);
fc1b774c 362 strbuf_release(&charset);
050ef365 363 strbuf_release(&effective_url);
97cc7bc4
SP
364 strbuf_release(&buffer);
365 last_discovery = last;
366 return last;
367}
368
97cc7bc4
SP
369static struct ref *get_refs(int for_push)
370{
371 struct discovery *heads;
372
373 if (for_push)
2a455202 374 heads = discover_refs("git-receive-pack", for_push);
97cc7bc4 375 else
2a455202 376 heads = discover_refs("git-upload-pack", for_push);
97cc7bc4 377
2a455202 378 return heads->refs;
97cc7bc4
SP
379}
380
ae4efe19
SP
381static void output_refs(struct ref *refs)
382{
383 struct ref *posn;
384 for (posn = refs; posn; posn = posn->next) {
385 if (posn->symref)
386 printf("@%s %s\n", posn->symref, posn->name);
387 else
f4e54d02 388 printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
ae4efe19
SP
389 }
390 printf("\n");
391 fflush(stdout);
ae4efe19
SP
392}
393
de1a2fdd
SP
394struct rpc_state {
395 const char *service_name;
396 const char **argv;
8150749d 397 struct strbuf *stdin_preamble;
de1a2fdd
SP
398 char *service_url;
399 char *hdr_content_type;
400 char *hdr_accept;
401 char *buf;
402 size_t alloc;
403 size_t len;
404 size_t pos;
405 int in;
406 int out;
296b847c 407 int any_written;
de1a2fdd 408 struct strbuf result;
b8538603 409 unsigned gzip_request : 1;
6c81a990 410 unsigned initial_buffer : 1;
de1a2fdd
SP
411};
412
413static size_t rpc_out(void *ptr, size_t eltsize,
414 size_t nmemb, void *buffer_)
415{
416 size_t max = eltsize * nmemb;
417 struct rpc_state *rpc = buffer_;
418 size_t avail = rpc->len - rpc->pos;
419
420 if (!avail) {
6c81a990 421 rpc->initial_buffer = 0;
4981fe75 422 avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
de1a2fdd
SP
423 if (!avail)
424 return 0;
425 rpc->pos = 0;
426 rpc->len = avail;
427 }
428
48310608 429 if (max < avail)
de1a2fdd
SP
430 avail = max;
431 memcpy(ptr, rpc->buf + rpc->pos, avail);
432 rpc->pos += avail;
433 return avail;
434}
435
6c81a990 436#ifndef NO_CURL_IOCTL
5092d3ec 437static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
6c81a990
MS
438{
439 struct rpc_state *rpc = clientp;
440
441 switch (cmd) {
442 case CURLIOCMD_NOP:
443 return CURLIOE_OK;
444
445 case CURLIOCMD_RESTARTREAD:
446 if (rpc->initial_buffer) {
447 rpc->pos = 0;
448 return CURLIOE_OK;
449 }
b725b270 450 error("unable to rewind rpc post data - try increasing http.postBuffer");
6c81a990
MS
451 return CURLIOE_FAILRESTART;
452
453 default:
454 return CURLIOE_UNKNOWNCMD;
455 }
456}
457#endif
458
a04ff3ec 459static size_t rpc_in(char *ptr, size_t eltsize,
de1a2fdd
SP
460 size_t nmemb, void *buffer_)
461{
462 size_t size = eltsize * nmemb;
463 struct rpc_state *rpc = buffer_;
296b847c
DT
464 if (size)
465 rpc->any_written = 1;
de1a2fdd
SP
466 write_or_die(rpc->in, ptr, size);
467 return size;
468}
469
3a347ed7
JK
470static int run_slot(struct active_request_slot *slot,
471 struct slot_results *results)
206b099d 472{
b81401c1 473 int err;
3a347ed7 474 struct slot_results results_buf;
206b099d 475
3a347ed7
JK
476 if (!results)
477 results = &results_buf;
478
beed336c 479 err = run_one_slot(slot, results);
206b099d 480
b81401c1 481 if (err != HTTP_OK && err != HTTP_REAUTH) {
00540458
SP
482 struct strbuf msg = STRBUF_INIT;
483 if (results->http_code && results->http_code != 200)
484 strbuf_addf(&msg, "HTTP %ld", results->http_code);
485 if (results->curl_result != CURLE_OK) {
486 if (msg.len)
487 strbuf_addch(&msg, ' ');
488 strbuf_addf(&msg, "curl %d", results->curl_result);
489 if (curl_errorstr[0]) {
490 strbuf_addch(&msg, ' ');
491 strbuf_addstr(&msg, curl_errorstr);
492 }
493 }
494 error("RPC failed; %s", msg.buf);
495 strbuf_release(&msg);
206b099d
SP
496 }
497
498 return err;
499}
500
3a347ed7 501static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
206b099d
SP
502{
503 struct active_request_slot *slot;
8cb01e2f 504 struct curl_slist *headers = http_copy_default_headers();
206b099d
SP
505 struct strbuf buf = STRBUF_INIT;
506 int err;
507
508 slot = get_active_slot();
509
510 headers = curl_slist_append(headers, rpc->hdr_content_type);
511 headers = curl_slist_append(headers, rpc->hdr_accept);
512
513 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
514 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
515 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
aa90b969 516 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
206b099d
SP
517 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
518 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
519 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
520 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
521 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
522
3a347ed7 523 err = run_slot(slot, results);
206b099d
SP
524
525 curl_slist_free_all(headers);
526 strbuf_release(&buf);
527 return err;
528}
529
de1a2fdd
SP
530static int post_rpc(struct rpc_state *rpc)
531{
532 struct active_request_slot *slot;
8cb01e2f 533 struct curl_slist *headers = http_copy_default_headers();
b8538603
SP
534 int use_gzip = rpc->gzip_request;
535 char *gzip_body = NULL;
37711549 536 size_t gzip_size = 0;
206b099d 537 int err, large_request = 0;
c80d96ca 538 int needs_100_continue = 0;
de1a2fdd
SP
539
540 /* Try to load the entire request, if we can fit it into the
541 * allocated buffer space we can use HTTP/1.0 and avoid the
542 * chunked encoding mess.
543 */
544 while (1) {
545 size_t left = rpc->alloc - rpc->len;
546 char *buf = rpc->buf + rpc->len;
547 int n;
548
549 if (left < LARGE_PACKET_MAX) {
550 large_request = 1;
b8538603 551 use_gzip = 0;
de1a2fdd
SP
552 break;
553 }
554
4981fe75 555 n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
de1a2fdd
SP
556 if (!n)
557 break;
558 rpc->len += n;
559 }
560
206b099d 561 if (large_request) {
c80d96ca 562 struct slot_results results;
563
b81401c1 564 do {
c80d96ca 565 err = probe_rpc(rpc, &results);
2501aff8
JK
566 if (err == HTTP_REAUTH)
567 credential_fill(&http_auth);
b81401c1
JK
568 } while (err == HTTP_REAUTH);
569 if (err != HTTP_OK)
570 return -1;
c80d96ca 571
572 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
573 needs_100_continue = 1;
206b099d
SP
574 }
575
abf8df86
JK
576 headers = curl_slist_append(headers, rpc->hdr_content_type);
577 headers = curl_slist_append(headers, rpc->hdr_accept);
c80d96ca 578 headers = curl_slist_append(headers, needs_100_continue ?
579 "Expect: 100-continue" : "Expect:");
abf8df86
JK
580
581retry:
de1a2fdd 582 slot = get_active_slot();
de1a2fdd 583
de1a2fdd 584 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
d21f9794 585 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
de1a2fdd 586 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
aa90b969 587 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
de1a2fdd 588
de1a2fdd
SP
589 if (large_request) {
590 /* The request body is large and the size cannot be predicted.
591 * We must use chunked encoding to send it.
592 */
de1a2fdd 593 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
6c81a990 594 rpc->initial_buffer = 1;
de1a2fdd
SP
595 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
596 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
6c81a990
MS
597#ifndef NO_CURL_IOCTL
598 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
599 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
600#endif
de1a2fdd
SP
601 if (options.verbosity > 1) {
602 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
603 fflush(stderr);
604 }
605
2e736fd5
JK
606 } else if (gzip_body) {
607 /*
608 * If we are looping to retry authentication, then the previous
609 * run will have set up the headers and gzip buffer already,
610 * and we just need to send it.
611 */
612 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
613 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, gzip_size);
614
b8538603
SP
615 } else if (use_gzip && 1024 < rpc->len) {
616 /* The client backend isn't giving us compressed data so
617 * we can try to deflate it ourselves, this may save on.
618 * the transfer time.
619 */
ef49a7a0 620 git_zstream stream;
b8538603
SP
621 int ret;
622
55bb5c91 623 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
df126e10
JK
624 gzip_size = git_deflate_bound(&stream, rpc->len);
625 gzip_body = xmalloc(gzip_size);
b8538603
SP
626
627 stream.next_in = (unsigned char *)rpc->buf;
628 stream.avail_in = rpc->len;
629 stream.next_out = (unsigned char *)gzip_body;
df126e10 630 stream.avail_out = gzip_size;
b8538603 631
55bb5c91 632 ret = git_deflate(&stream, Z_FINISH);
b8538603
SP
633 if (ret != Z_STREAM_END)
634 die("cannot deflate request; zlib deflate error %d", ret);
635
55bb5c91 636 ret = git_deflate_end_gently(&stream);
b8538603
SP
637 if (ret != Z_OK)
638 die("cannot deflate request; zlib end error %d", ret);
639
df126e10 640 gzip_size = stream.total_out;
b8538603
SP
641
642 headers = curl_slist_append(headers, "Content-Encoding: gzip");
643 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
df126e10 644 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, gzip_size);
b8538603
SP
645
646 if (options.verbosity > 1) {
647 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
648 rpc->service_name,
df126e10 649 (unsigned long)rpc->len, (unsigned long)gzip_size);
b8538603
SP
650 fflush(stderr);
651 }
de1a2fdd
SP
652 } else {
653 /* We know the complete request size in advance, use the
654 * more normal Content-Length approach.
655 */
656 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
657 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
658 if (options.verbosity > 1) {
659 fprintf(stderr, "POST %s (%lu bytes)\n",
660 rpc->service_name, (unsigned long)rpc->len);
661 fflush(stderr);
662 }
663 }
664
665 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
666 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
667 curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
668
296b847c
DT
669
670 rpc->any_written = 0;
3a347ed7 671 err = run_slot(slot, NULL);
2501aff8
JK
672 if (err == HTTP_REAUTH && !large_request) {
673 credential_fill(&http_auth);
abf8df86 674 goto retry;
2501aff8 675 }
b81401c1
JK
676 if (err != HTTP_OK)
677 err = -1;
de1a2fdd 678
296b847c
DT
679 if (!rpc->any_written)
680 err = -1;
681
de1a2fdd 682 curl_slist_free_all(headers);
b8538603 683 free(gzip_body);
de1a2fdd
SP
684 return err;
685}
686
687static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
688{
689 const char *svc = rpc->service_name;
690 struct strbuf buf = STRBUF_INIT;
8150749d 691 struct strbuf *preamble = rpc->stdin_preamble;
d3180279 692 struct child_process client = CHILD_PROCESS_INIT;
de1a2fdd
SP
693 int err = 0;
694
de1a2fdd
SP
695 client.in = -1;
696 client.out = -1;
697 client.git_cmd = 1;
698 client.argv = rpc->argv;
699 if (start_command(&client))
700 exit(1);
8150749d
IT
701 if (preamble)
702 write_or_die(client.in, preamble->buf, preamble->len);
de1a2fdd
SP
703 if (heads)
704 write_or_die(client.in, heads->buf, heads->len);
705
706 rpc->alloc = http_post_buffer;
707 rpc->buf = xmalloc(rpc->alloc);
708 rpc->in = client.in;
709 rpc->out = client.out;
710 strbuf_init(&rpc->result, 0);
711
b227bbc4 712 strbuf_addf(&buf, "%s%s", url.buf, svc);
de1a2fdd
SP
713 rpc->service_url = strbuf_detach(&buf, NULL);
714
715 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
716 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
717
8efa5f62 718 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
de1a2fdd
SP
719 rpc->hdr_accept = strbuf_detach(&buf, NULL);
720
721 while (!err) {
4981fe75 722 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
de1a2fdd
SP
723 if (!n)
724 break;
725 rpc->pos = 0;
726 rpc->len = n;
727 err |= post_rpc(rpc);
728 }
de1a2fdd
SP
729
730 close(client.in);
de1a2fdd 731 client.in = -1;
6cdf0223
SP
732 if (!err) {
733 strbuf_read(&rpc->result, client.out, 0);
734 } else {
735 char buf[4096];
736 for (;;)
737 if (xread(client.out, buf, sizeof(buf)) <= 0)
738 break;
739 }
b4ee10f6
SP
740
741 close(client.out);
de1a2fdd
SP
742 client.out = -1;
743
744 err |= finish_command(&client);
745 free(rpc->service_url);
746 free(rpc->hdr_content_type);
747 free(rpc->hdr_accept);
748 free(rpc->buf);
749 strbuf_release(&buf);
750 return err;
751}
752
292ce46b
SP
753static int fetch_dumb(int nr_heads, struct ref **to_fetch)
754{
26e1e0b2 755 struct walker *walker;
b32fa95f 756 char **targets;
292ce46b
SP
757 int ret, i;
758
b32fa95f 759 ALLOC_ARRAY(targets, nr_heads);
508ea882
NTND
760 if (options.depth || options.deepen_since)
761 die("dumb http transport does not support shallow capabilities");
292ce46b 762 for (i = 0; i < nr_heads; i++)
f4e54d02 763 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
292ce46b 764
b227bbc4 765 walker = get_http_walker(url.buf);
292ce46b
SP
766 walker->get_all = 1;
767 walker->get_tree = 1;
768 walker->get_history = 1;
ef08ef9e 769 walker->get_verbosely = options.verbosity >= 3;
292ce46b
SP
770 walker->get_recover = 0;
771 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
26e1e0b2 772 walker_free(walker);
292ce46b
SP
773
774 for (i = 0; i < nr_heads; i++)
775 free(targets[i]);
776 free(targets);
777
b725b270 778 return ret ? error("fetch failed.") : 0;
292ce46b
SP
779}
780
249b2004
SP
781static int fetch_git(struct discovery *heads,
782 int nr_heads, struct ref **to_fetch)
783{
784 struct rpc_state rpc;
8150749d 785 struct strbuf preamble = STRBUF_INIT;
b5f62ebe
NTND
786 int i, err;
787 struct argv_array args = ARGV_ARRAY_INIT;
788
789 argv_array_pushl(&args, "fetch-pack", "--stateless-rpc",
790 "--stdin", "--lock-pack", NULL);
249b2004 791 if (options.followtags)
b5f62ebe 792 argv_array_push(&args, "--include-tag");
249b2004 793 if (options.thin)
b5f62ebe
NTND
794 argv_array_push(&args, "--thin");
795 if (options.verbosity >= 3)
796 argv_array_pushl(&args, "-v", "-v", NULL);
9ba38048 797 if (options.check_self_contained_and_connected)
b5f62ebe 798 argv_array_push(&args, "--check-self-contained-and-connected");
16094885 799 if (options.cloning)
b5f62ebe 800 argv_array_push(&args, "--cloning");
16094885 801 if (options.update_shallow)
b5f62ebe 802 argv_array_push(&args, "--update-shallow");
249b2004 803 if (!options.progress)
b5f62ebe
NTND
804 argv_array_push(&args, "--no-progress");
805 if (options.depth)
806 argv_array_pushf(&args, "--depth=%lu", options.depth);
508ea882
NTND
807 if (options.deepen_since)
808 argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since);
a45a2600
NTND
809 for (i = 0; i < options.deepen_not.nr; i++)
810 argv_array_pushf(&args, "--shallow-exclude=%s",
811 options.deepen_not.items[i].string);
cccf74e2
NTND
812 if (options.deepen_relative && options.depth)
813 argv_array_push(&args, "--deepen-relative");
b5f62ebe 814 argv_array_push(&args, url.buf);
8150749d 815
249b2004
SP
816 for (i = 0; i < nr_heads; i++) {
817 struct ref *ref = to_fetch[i];
94ee8e2c 818 if (!*ref->name)
249b2004 819 die("cannot fetch by sha1 over smart http");
58f2ed05 820 packet_buf_write(&preamble, "%s %s\n",
f4e54d02 821 oid_to_hex(&ref->old_oid), ref->name);
249b2004 822 }
8150749d 823 packet_buf_flush(&preamble);
249b2004
SP
824
825 memset(&rpc, 0, sizeof(rpc));
826 rpc.service_name = "git-upload-pack",
b5f62ebe 827 rpc.argv = args.argv;
8150749d 828 rpc.stdin_preamble = &preamble;
b8538603 829 rpc.gzip_request = 1;
249b2004
SP
830
831 err = rpc_service(&rpc, heads);
832 if (rpc.result.len)
cdf4fb8e 833 write_or_die(1, rpc.result.buf, rpc.result.len);
249b2004 834 strbuf_release(&rpc.result);
8150749d 835 strbuf_release(&preamble);
b5f62ebe 836 argv_array_clear(&args);
249b2004
SP
837 return err;
838}
839
840static int fetch(int nr_heads, struct ref **to_fetch)
841{
2a455202 842 struct discovery *d = discover_refs("git-upload-pack", 0);
249b2004
SP
843 if (d->proto_git)
844 return fetch_git(d, nr_heads, to_fetch);
845 else
846 return fetch_dumb(nr_heads, to_fetch);
847}
848
292ce46b
SP
849static void parse_fetch(struct strbuf *buf)
850{
851 struct ref **to_fetch = NULL;
852 struct ref *list_head = NULL;
853 struct ref **list = &list_head;
854 int alloc_heads = 0, nr_heads = 0;
855
856 do {
95b567c7
JK
857 const char *p;
858 if (skip_prefix(buf->buf, "fetch ", &p)) {
859 const char *name;
292ce46b 860 struct ref *ref;
8338c911 861 struct object_id old_oid;
292ce46b 862
8338c911 863 if (get_oid_hex(p, &old_oid))
292ce46b 864 die("protocol error: expected sha/ref, got %s'", p);
8338c911 865 if (p[GIT_SHA1_HEXSZ] == ' ')
866 name = p + GIT_SHA1_HEXSZ + 1;
867 else if (!p[GIT_SHA1_HEXSZ])
292ce46b
SP
868 name = "";
869 else
870 die("protocol error: expected sha/ref, got %s'", p);
871
872 ref = alloc_ref(name);
8338c911 873 oidcpy(&ref->old_oid, &old_oid);
292ce46b
SP
874
875 *list = ref;
876 list = &ref->next;
877
878 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
879 to_fetch[nr_heads++] = ref;
880 }
881 else
882 die("http transport does not support %s", buf->buf);
883
884 strbuf_reset(buf);
8f309aeb 885 if (strbuf_getline_lf(buf, stdin) == EOF)
292ce46b
SP
886 return;
887 if (!*buf->buf)
888 break;
889 } while (1);
890
249b2004 891 if (fetch(nr_heads, to_fetch))
292ce46b
SP
892 exit(128); /* error already reported */
893 free_refs(list_head);
894 free(to_fetch);
895
896 printf("\n");
897 fflush(stdout);
898 strbuf_reset(buf);
899}
900
ae4efe19
SP
901static int push_dav(int nr_spec, char **specs)
902{
850d2fec
JK
903 struct child_process child = CHILD_PROCESS_INIT;
904 size_t i;
ae4efe19 905
850d2fec
JK
906 child.git_cmd = 1;
907 argv_array_push(&child.args, "http-push");
908 argv_array_push(&child.args, "--helper-status");
ae4efe19 909 if (options.dry_run)
850d2fec 910 argv_array_push(&child.args, "--dry-run");
ae4efe19 911 if (options.verbosity > 1)
850d2fec
JK
912 argv_array_push(&child.args, "--verbose");
913 argv_array_push(&child.args, url.buf);
ae4efe19 914 for (i = 0; i < nr_spec; i++)
850d2fec 915 argv_array_push(&child.args, specs[i]);
ae4efe19 916
850d2fec
JK
917 if (run_command(&child))
918 die("git-http-push failed");
ae4efe19
SP
919 return 0;
920}
921
de1a2fdd
SP
922static int push_git(struct discovery *heads, int nr_spec, char **specs)
923{
924 struct rpc_state rpc;
222b1212
JH
925 int i, err;
926 struct argv_array args;
05c1eb10 927 struct string_list_item *cas_option;
26be19ba 928 struct strbuf preamble = STRBUF_INIT;
222b1212
JH
929
930 argv_array_init(&args);
931 argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
932 NULL);
de1a2fdd 933
de1a2fdd 934 if (options.thin)
222b1212 935 argv_array_push(&args, "--thin");
de1a2fdd 936 if (options.dry_run)
222b1212 937 argv_array_push(&args, "--dry-run");
30261094
DB
938 if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
939 argv_array_push(&args, "--signed=yes");
940 else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
941 argv_array_push(&args, "--signed=if-asked");
c207e34f 942 if (options.verbosity == 0)
222b1212 943 argv_array_push(&args, "--quiet");
c207e34f 944 else if (options.verbosity > 1)
222b1212
JH
945 argv_array_push(&args, "--verbose");
946 argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
05c1eb10 947 for_each_string_list_item(cas_option, &cas_options)
2233ad45 948 argv_array_push(&args, cas_option->string);
b227bbc4 949 argv_array_push(&args, url.buf);
26be19ba
JK
950
951 argv_array_push(&args, "--stdin");
de1a2fdd 952 for (i = 0; i < nr_spec; i++)
26be19ba
JK
953 packet_buf_write(&preamble, "%s\n", specs[i]);
954 packet_buf_flush(&preamble);
de1a2fdd
SP
955
956 memset(&rpc, 0, sizeof(rpc));
957 rpc.service_name = "git-receive-pack",
222b1212 958 rpc.argv = args.argv;
26be19ba 959 rpc.stdin_preamble = &preamble;
de1a2fdd
SP
960
961 err = rpc_service(&rpc, heads);
962 if (rpc.result.len)
cdf4fb8e 963 write_or_die(1, rpc.result.buf, rpc.result.len);
de1a2fdd 964 strbuf_release(&rpc.result);
26be19ba 965 strbuf_release(&preamble);
222b1212 966 argv_array_clear(&args);
de1a2fdd
SP
967 return err;
968}
969
970static int push(int nr_spec, char **specs)
971{
2a455202 972 struct discovery *heads = discover_refs("git-receive-pack", 1);
de1a2fdd
SP
973 int ret;
974
975 if (heads->proto_git)
976 ret = push_git(heads, nr_spec, specs);
977 else
978 ret = push_dav(nr_spec, specs);
979 free_discovery(heads);
980 return ret;
981}
982
ae4efe19
SP
983static void parse_push(struct strbuf *buf)
984{
985 char **specs = NULL;
5238cbf6 986 int alloc_spec = 0, nr_spec = 0, i, ret;
ae4efe19
SP
987
988 do {
59556548 989 if (starts_with(buf->buf, "push ")) {
ae4efe19
SP
990 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
991 specs[nr_spec++] = xstrdup(buf->buf + 5);
992 }
993 else
994 die("http transport does not support %s", buf->buf);
995
996 strbuf_reset(buf);
8f309aeb 997 if (strbuf_getline_lf(buf, stdin) == EOF)
dc4cd767 998 goto free_specs;
ae4efe19
SP
999 if (!*buf->buf)
1000 break;
1001 } while (1);
1002
5238cbf6 1003 ret = push(nr_spec, specs);
ae4efe19
SP
1004 printf("\n");
1005 fflush(stdout);
dc4cd767 1006
5238cbf6
SP
1007 if (ret)
1008 exit(128); /* error already reported */
1009
dc4cd767
JM
1010 free_specs:
1011 for (i = 0; i < nr_spec; i++)
1012 free(specs[i]);
1013 free(specs);
ae4efe19
SP
1014}
1015
3f2e2297 1016int cmd_main(int argc, const char **argv)
a2d725b7 1017{
a2d725b7 1018 struct strbuf buf = STRBUF_INIT;
a45d3d7e 1019 int nongit;
a2d725b7 1020
a45d3d7e 1021 setup_git_directory_gently(&nongit);
a2d725b7 1022 if (argc < 2) {
cdaa4e98 1023 error("remote-curl: usage: git remote-curl <remote> [<url>]");
a2d725b7
DB
1024 return 1;
1025 }
1026
ef08ef9e
SP
1027 options.verbosity = 1;
1028 options.progress = !!isatty(2);
de1a2fdd 1029 options.thin = 1;
a45a2600 1030 string_list_init(&options.deepen_not, 1);
ef08ef9e 1031
a2d725b7
DB
1032 remote = remote_get(argv[1]);
1033
1034 if (argc > 2) {
b227bbc4 1035 end_url_with_slash(&url, argv[2]);
a2d725b7 1036 } else {
b227bbc4 1037 end_url_with_slash(&url, remote->url[0]);
a2d725b7
DB
1038 }
1039
b227bbc4 1040 http_init(remote, url.buf, 0);
888692b7 1041
a2d725b7 1042 do {
95b567c7
JK
1043 const char *arg;
1044
8f309aeb 1045 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1843f0ce 1046 if (ferror(stdin))
cdaa4e98 1047 error("remote-curl: error reading command stream from git");
1843f0ce
SR
1048 return 1;
1049 }
1050 if (buf.len == 0)
a2d725b7 1051 break;
59556548 1052 if (starts_with(buf.buf, "fetch ")) {
a45d3d7e 1053 if (nongit)
cdaa4e98 1054 die("remote-curl: fetch attempted without a local repo");
292ce46b
SP
1055 parse_fetch(&buf);
1056
59556548 1057 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
97cc7bc4
SP
1058 int for_push = !!strstr(buf.buf + 4, "for-push");
1059 output_refs(get_refs(for_push));
ae4efe19 1060
59556548 1061 } else if (starts_with(buf.buf, "push ")) {
ae4efe19
SP
1062 parse_push(&buf);
1063
95b567c7
JK
1064 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1065 char *value = strchr(arg, ' ');
ef08ef9e
SP
1066 int result;
1067
1068 if (value)
1069 *value++ = '\0';
1070 else
1071 value = "true";
1072
95b567c7 1073 result = set_option(arg, value);
ef08ef9e
SP
1074 if (!result)
1075 printf("ok\n");
1076 else if (result < 0)
1077 printf("error invalid value\n");
1078 else
1079 printf("unsupported\n");
a2d725b7 1080 fflush(stdout);
ef08ef9e 1081
a2d725b7
DB
1082 } else if (!strcmp(buf.buf, "capabilities")) {
1083 printf("fetch\n");
ef08ef9e 1084 printf("option\n");
ae4efe19 1085 printf("push\n");
9ba38048 1086 printf("check-connectivity\n");
a2d725b7
DB
1087 printf("\n");
1088 fflush(stdout);
1089 } else {
cdaa4e98 1090 error("remote-curl: unknown command '%s' from git", buf.buf);
a2d725b7
DB
1091 return 1;
1092 }
1093 strbuf_reset(&buf);
1094 } while (1);
888692b7
TRC
1095
1096 http_cleanup();
1097
a2d725b7
DB
1098 return 0;
1099}