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1 | #include "cache.h" | |
2 | #include "config.h" | |
3 | #include "remote.h" | |
4 | #include "strbuf.h" | |
5 | #include "walker.h" | |
6 | #include "http.h" | |
7 | #include "exec_cmd.h" | |
8 | #include "run-command.h" | |
9 | #include "pkt-line.h" | |
10 | #include "string-list.h" | |
11 | #include "sideband.h" | |
12 | #include "argv-array.h" | |
13 | #include "credential.h" | |
14 | #include "sha1-array.h" | |
15 | #include "send-pack.h" | |
16 | ||
17 | static struct remote *remote; | |
18 | /* always ends with a trailing slash */ | |
19 | static struct strbuf url = STRBUF_INIT; | |
20 | ||
21 | struct options { | |
22 | int verbosity; | |
23 | unsigned long depth; | |
24 | char *deepen_since; | |
25 | struct string_list deepen_not; | |
26 | struct string_list push_options; | |
27 | unsigned progress : 1, | |
28 | check_self_contained_and_connected : 1, | |
29 | cloning : 1, | |
30 | update_shallow : 1, | |
31 | followtags : 1, | |
32 | dry_run : 1, | |
33 | thin : 1, | |
34 | /* One of the SEND_PACK_PUSH_CERT_* constants. */ | |
35 | push_cert : 2, | |
36 | deepen_relative : 1; | |
37 | }; | |
38 | static struct options options; | |
39 | static struct string_list cas_options = STRING_LIST_INIT_DUP; | |
40 | ||
41 | static 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; | |
58 | return 0; | |
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; | |
66 | return 0; | |
67 | } | |
68 | else if (!strcmp(name, "deepen-since")) { | |
69 | options.deepen_since = xstrdup(value); | |
70 | return 0; | |
71 | } | |
72 | else if (!strcmp(name, "deepen-not")) { | |
73 | string_list_append(&options.deepen_not, value); | |
74 | return 0; | |
75 | } | |
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 | } | |
85 | else if (!strcmp(name, "followtags")) { | |
86 | if (!strcmp(value, "true")) | |
87 | options.followtags = 1; | |
88 | else if (!strcmp(value, "false")) | |
89 | options.followtags = 0; | |
90 | else | |
91 | return -1; | |
92 | return 0; | |
93 | } | |
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 | } | |
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 | } | |
112 | else if (!strcmp(name, "cas")) { | |
113 | struct strbuf val = STRBUF_INIT; | |
114 | strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value); | |
115 | string_list_append(&cas_options, val.buf); | |
116 | strbuf_release(&val); | |
117 | return 0; | |
118 | } else if (!strcmp(name, "cloning")) { | |
119 | if (!strcmp(value, "true")) | |
120 | options.cloning = 1; | |
121 | else if (!strcmp(value, "false")) | |
122 | options.cloning = 0; | |
123 | else | |
124 | return -1; | |
125 | return 0; | |
126 | } else if (!strcmp(name, "update-shallow")) { | |
127 | if (!strcmp(value, "true")) | |
128 | options.update_shallow = 1; | |
129 | else if (!strcmp(value, "false")) | |
130 | options.update_shallow = 0; | |
131 | else | |
132 | return -1; | |
133 | return 0; | |
134 | } else if (!strcmp(name, "pushcert")) { | |
135 | if (!strcmp(value, "true")) | |
136 | options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS; | |
137 | else if (!strcmp(value, "false")) | |
138 | options.push_cert = SEND_PACK_PUSH_CERT_NEVER; | |
139 | else if (!strcmp(value, "if-asked")) | |
140 | options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED; | |
141 | else | |
142 | return -1; | |
143 | return 0; | |
144 | } else if (!strcmp(name, "push-option")) { | |
145 | string_list_append(&options.push_options, value); | |
146 | return 0; | |
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 */ | |
160 | } else { | |
161 | return 1 /* unsupported */; | |
162 | } | |
163 | } | |
164 | ||
165 | struct discovery { | |
166 | const char *service; | |
167 | char *buf_alloc; | |
168 | char *buf; | |
169 | size_t len; | |
170 | struct ref *refs; | |
171 | struct oid_array shallow; | |
172 | unsigned proto_git : 1; | |
173 | }; | |
174 | static struct discovery *last_discovery; | |
175 | ||
176 | static 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, | |
180 | for_push ? REF_NORMAL : 0, NULL, &heads->shallow); | |
181 | return list; | |
182 | } | |
183 | ||
184 | static 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) | |
205 | die("%sinfo/refs not valid: is this a git repository?", | |
206 | url.buf); | |
207 | data[i] = 0; | |
208 | ref_name = mid + 1; | |
209 | ref = alloc_ref(ref_name); | |
210 | get_oid_hex(start, &ref->old_oid); | |
211 | if (!refs) | |
212 | refs = ref; | |
213 | if (last_ref) | |
214 | last_ref->next = ref; | |
215 | last_ref = ref; | |
216 | start = NULL; | |
217 | } | |
218 | i++; | |
219 | } | |
220 | ||
221 | ref = alloc_ref("HEAD"); | |
222 | if (!http_fetch_ref(url.buf, ref) && | |
223 | !resolve_remote_symref(ref, refs)) { | |
224 | ref->next = refs; | |
225 | refs = ref; | |
226 | } else { | |
227 | free(ref); | |
228 | } | |
229 | ||
230 | return refs; | |
231 | } | |
232 | ||
233 | static void free_discovery(struct discovery *d) | |
234 | { | |
235 | if (d) { | |
236 | if (d == last_discovery) | |
237 | last_discovery = NULL; | |
238 | free(d->shallow.oid); | |
239 | free(d->buf_alloc); | |
240 | free_refs(d->refs); | |
241 | free(d); | |
242 | } | |
243 | } | |
244 | ||
245 | static int show_http_message(struct strbuf *type, struct strbuf *charset, | |
246 | struct strbuf *msg) | |
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. | |
253 | */ | |
254 | if (strcmp(type->buf, "text/plain")) | |
255 | return -1; | |
256 | if (charset->len) | |
257 | strbuf_reencode(msg, charset->buf, get_log_output_encoding()); | |
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 | ||
272 | static struct discovery *discover_refs(const char *service, int for_push) | |
273 | { | |
274 | struct strbuf exp = STRBUF_INIT; | |
275 | struct strbuf type = STRBUF_INIT; | |
276 | struct strbuf charset = STRBUF_INIT; | |
277 | struct strbuf buffer = STRBUF_INIT; | |
278 | struct strbuf refs_url = STRBUF_INIT; | |
279 | struct strbuf effective_url = STRBUF_INIT; | |
280 | struct discovery *last = last_discovery; | |
281 | int http_ret, maybe_smart = 0; | |
282 | struct http_get_options http_options; | |
283 | ||
284 | if (last && !strcmp(service, last->service)) | |
285 | return last; | |
286 | free_discovery(last); | |
287 | ||
288 | strbuf_addf(&refs_url, "%sinfo/refs", url.buf); | |
289 | if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) && | |
290 | git_env_bool("GIT_SMART_HTTP", 1)) { | |
291 | maybe_smart = 1; | |
292 | if (!strchr(url.buf, '?')) | |
293 | strbuf_addch(&refs_url, '?'); | |
294 | else | |
295 | strbuf_addch(&refs_url, '&'); | |
296 | strbuf_addf(&refs_url, "service=%s", service); | |
297 | } | |
298 | ||
299 | memset(&http_options, 0, sizeof(http_options)); | |
300 | http_options.content_type = &type; | |
301 | http_options.charset = &charset; | |
302 | http_options.effective_url = &effective_url; | |
303 | http_options.base_url = &url; | |
304 | http_options.initial_request = 1; | |
305 | http_options.no_cache = 1; | |
306 | http_options.keep_error = 1; | |
307 | ||
308 | http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options); | |
309 | switch (http_ret) { | |
310 | case HTTP_OK: | |
311 | break; | |
312 | case HTTP_MISSING_TARGET: | |
313 | show_http_message(&type, &charset, &buffer); | |
314 | die("repository '%s' not found", url.buf); | |
315 | case HTTP_NOAUTH: | |
316 | show_http_message(&type, &charset, &buffer); | |
317 | die("Authentication failed for '%s'", url.buf); | |
318 | default: | |
319 | show_http_message(&type, &charset, &buffer); | |
320 | die("unable to access '%s': %s", url.buf, curl_errorstr); | |
321 | } | |
322 | ||
323 | if (options.verbosity && !starts_with(refs_url.buf, url.buf)) | |
324 | warning(_("redirecting to %s"), url.buf); | |
325 | ||
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 | ||
331 | strbuf_addf(&exp, "application/x-%s-advertisement", service); | |
332 | if (maybe_smart && | |
333 | (5 <= last->len && last->buf[4] == '#') && | |
334 | !strbuf_cmp(&exp, &type)) { | |
335 | char *line; | |
336 | ||
337 | /* | |
338 | * smart HTTP response; validate that the service | |
339 | * pkt-line matches our request. | |
340 | */ | |
341 | line = packet_read_line_buf(&last->buf, &last->len, NULL); | |
342 | ||
343 | strbuf_reset(&exp); | |
344 | strbuf_addf(&exp, "# service=%s", service); | |
345 | if (strcmp(line, exp.buf)) | |
346 | die("invalid server response; got '%s'", line); | |
347 | strbuf_release(&exp); | |
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 | */ | |
353 | while (packet_read_line_buf(&last->buf, &last->len, NULL)) | |
354 | ; | |
355 | ||
356 | last->proto_git = 1; | |
357 | } | |
358 | ||
359 | if (last->proto_git) | |
360 | last->refs = parse_git_refs(last, for_push); | |
361 | else | |
362 | last->refs = parse_info_refs(last); | |
363 | ||
364 | strbuf_release(&refs_url); | |
365 | strbuf_release(&exp); | |
366 | strbuf_release(&type); | |
367 | strbuf_release(&charset); | |
368 | strbuf_release(&effective_url); | |
369 | strbuf_release(&buffer); | |
370 | last_discovery = last; | |
371 | return last; | |
372 | } | |
373 | ||
374 | static struct ref *get_refs(int for_push) | |
375 | { | |
376 | struct discovery *heads; | |
377 | ||
378 | if (for_push) | |
379 | heads = discover_refs("git-receive-pack", for_push); | |
380 | else | |
381 | heads = discover_refs("git-upload-pack", for_push); | |
382 | ||
383 | return heads->refs; | |
384 | } | |
385 | ||
386 | static 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 | |
393 | printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name); | |
394 | } | |
395 | printf("\n"); | |
396 | fflush(stdout); | |
397 | } | |
398 | ||
399 | struct rpc_state { | |
400 | const char *service_name; | |
401 | const char **argv; | |
402 | struct strbuf *stdin_preamble; | |
403 | char *service_url; | |
404 | char *hdr_content_type; | |
405 | char *hdr_accept; | |
406 | char *buf; | |
407 | size_t alloc; | |
408 | size_t len; | |
409 | size_t pos; | |
410 | int in; | |
411 | int out; | |
412 | int any_written; | |
413 | struct strbuf result; | |
414 | unsigned gzip_request : 1; | |
415 | unsigned initial_buffer : 1; | |
416 | }; | |
417 | ||
418 | static 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) { | |
426 | rpc->initial_buffer = 0; | |
427 | avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0); | |
428 | if (!avail) | |
429 | return 0; | |
430 | rpc->pos = 0; | |
431 | rpc->len = avail; | |
432 | } | |
433 | ||
434 | if (max < avail) | |
435 | avail = max; | |
436 | memcpy(ptr, rpc->buf + rpc->pos, avail); | |
437 | rpc->pos += avail; | |
438 | return avail; | |
439 | } | |
440 | ||
441 | #ifndef NO_CURL_IOCTL | |
442 | static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp) | |
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 | } | |
455 | error("unable to rewind rpc post data - try increasing http.postBuffer"); | |
456 | return CURLIOE_FAILRESTART; | |
457 | ||
458 | default: | |
459 | return CURLIOE_UNKNOWNCMD; | |
460 | } | |
461 | } | |
462 | #endif | |
463 | ||
464 | static size_t rpc_in(char *ptr, size_t eltsize, | |
465 | size_t nmemb, void *buffer_) | |
466 | { | |
467 | size_t size = eltsize * nmemb; | |
468 | struct rpc_state *rpc = buffer_; | |
469 | if (size) | |
470 | rpc->any_written = 1; | |
471 | write_or_die(rpc->in, ptr, size); | |
472 | return size; | |
473 | } | |
474 | ||
475 | static int run_slot(struct active_request_slot *slot, | |
476 | struct slot_results *results) | |
477 | { | |
478 | int err; | |
479 | struct slot_results results_buf; | |
480 | ||
481 | if (!results) | |
482 | results = &results_buf; | |
483 | ||
484 | err = run_one_slot(slot, results); | |
485 | ||
486 | if (err != HTTP_OK && err != HTTP_REAUTH) { | |
487 | struct strbuf msg = STRBUF_INIT; | |
488 | if (results->http_code && results->http_code != 200) | |
489 | strbuf_addf(&msg, "HTTP %ld", results->http_code); | |
490 | if (results->curl_result != CURLE_OK) { | |
491 | if (msg.len) | |
492 | strbuf_addch(&msg, ' '); | |
493 | strbuf_addf(&msg, "curl %d", results->curl_result); | |
494 | if (curl_errorstr[0]) { | |
495 | strbuf_addch(&msg, ' '); | |
496 | strbuf_addstr(&msg, curl_errorstr); | |
497 | } | |
498 | } | |
499 | error("RPC failed; %s", msg.buf); | |
500 | strbuf_release(&msg); | |
501 | } | |
502 | ||
503 | return err; | |
504 | } | |
505 | ||
506 | static int probe_rpc(struct rpc_state *rpc, struct slot_results *results) | |
507 | { | |
508 | struct active_request_slot *slot; | |
509 | struct curl_slist *headers = http_copy_default_headers(); | |
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); | |
521 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL); | |
522 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000"); | |
523 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4); | |
524 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
525 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
526 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf); | |
527 | ||
528 | err = run_slot(slot, results); | |
529 | ||
530 | curl_slist_free_all(headers); | |
531 | strbuf_release(&buf); | |
532 | return err; | |
533 | } | |
534 | ||
535 | static curl_off_t xcurl_off_t(ssize_t len) { | |
536 | if (len > maximum_signed_value_of_type(curl_off_t)) | |
537 | die("cannot handle pushes this big"); | |
538 | return (curl_off_t) len; | |
539 | } | |
540 | ||
541 | static int post_rpc(struct rpc_state *rpc) | |
542 | { | |
543 | struct active_request_slot *slot; | |
544 | struct curl_slist *headers = http_copy_default_headers(); | |
545 | int use_gzip = rpc->gzip_request; | |
546 | char *gzip_body = NULL; | |
547 | size_t gzip_size = 0; | |
548 | int err, large_request = 0; | |
549 | int needs_100_continue = 0; | |
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; | |
562 | use_gzip = 0; | |
563 | break; | |
564 | } | |
565 | ||
566 | n = packet_read(rpc->out, NULL, NULL, buf, left, 0); | |
567 | if (!n) | |
568 | break; | |
569 | rpc->len += n; | |
570 | } | |
571 | ||
572 | if (large_request) { | |
573 | struct slot_results results; | |
574 | ||
575 | do { | |
576 | err = probe_rpc(rpc, &results); | |
577 | if (err == HTTP_REAUTH) | |
578 | credential_fill(&http_auth); | |
579 | } while (err == HTTP_REAUTH); | |
580 | if (err != HTTP_OK) | |
581 | return -1; | |
582 | ||
583 | if (results.auth_avail & CURLAUTH_GSSNEGOTIATE) | |
584 | needs_100_continue = 1; | |
585 | } | |
586 | ||
587 | headers = curl_slist_append(headers, rpc->hdr_content_type); | |
588 | headers = curl_slist_append(headers, rpc->hdr_accept); | |
589 | headers = curl_slist_append(headers, needs_100_continue ? | |
590 | "Expect: 100-continue" : "Expect:"); | |
591 | ||
592 | retry: | |
593 | slot = get_active_slot(); | |
594 | ||
595 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
596 | curl_easy_setopt(slot->curl, CURLOPT_POST, 1); | |
597 | curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url); | |
598 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); | |
599 | ||
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 | */ | |
604 | headers = curl_slist_append(headers, "Transfer-Encoding: chunked"); | |
605 | rpc->initial_buffer = 1; | |
606 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out); | |
607 | curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc); | |
608 | #ifndef NO_CURL_IOCTL | |
609 | curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl); | |
610 | curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc); | |
611 | #endif | |
612 | if (options.verbosity > 1) { | |
613 | fprintf(stderr, "POST %s (chunked)\n", rpc->service_name); | |
614 | fflush(stderr); | |
615 | } | |
616 | ||
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); | |
624 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size)); | |
625 | ||
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 | */ | |
631 | git_zstream stream; | |
632 | int ret; | |
633 | ||
634 | git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION); | |
635 | gzip_size = git_deflate_bound(&stream, rpc->len); | |
636 | gzip_body = xmalloc(gzip_size); | |
637 | ||
638 | stream.next_in = (unsigned char *)rpc->buf; | |
639 | stream.avail_in = rpc->len; | |
640 | stream.next_out = (unsigned char *)gzip_body; | |
641 | stream.avail_out = gzip_size; | |
642 | ||
643 | ret = git_deflate(&stream, Z_FINISH); | |
644 | if (ret != Z_STREAM_END) | |
645 | die("cannot deflate request; zlib deflate error %d", ret); | |
646 | ||
647 | ret = git_deflate_end_gently(&stream); | |
648 | if (ret != Z_OK) | |
649 | die("cannot deflate request; zlib end error %d", ret); | |
650 | ||
651 | gzip_size = stream.total_out; | |
652 | ||
653 | headers = curl_slist_append(headers, "Content-Encoding: gzip"); | |
654 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body); | |
655 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size)); | |
656 | ||
657 | if (options.verbosity > 1) { | |
658 | fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n", | |
659 | rpc->service_name, | |
660 | (unsigned long)rpc->len, (unsigned long)gzip_size); | |
661 | fflush(stderr); | |
662 | } | |
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); | |
668 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len)); | |
669 | if (options.verbosity > 1) { | |
670 | fprintf(stderr, "POST %s (%lu bytes)\n", | |
671 | rpc->service_name, (unsigned long)rpc->len); | |
672 | fflush(stderr); | |
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 | ||
680 | ||
681 | rpc->any_written = 0; | |
682 | err = run_slot(slot, NULL); | |
683 | if (err == HTTP_REAUTH && !large_request) { | |
684 | credential_fill(&http_auth); | |
685 | goto retry; | |
686 | } | |
687 | if (err != HTTP_OK) | |
688 | err = -1; | |
689 | ||
690 | if (!rpc->any_written) | |
691 | err = -1; | |
692 | ||
693 | curl_slist_free_all(headers); | |
694 | free(gzip_body); | |
695 | return err; | |
696 | } | |
697 | ||
698 | static int rpc_service(struct rpc_state *rpc, struct discovery *heads) | |
699 | { | |
700 | const char *svc = rpc->service_name; | |
701 | struct strbuf buf = STRBUF_INIT; | |
702 | struct strbuf *preamble = rpc->stdin_preamble; | |
703 | struct child_process client = CHILD_PROCESS_INIT; | |
704 | int err = 0; | |
705 | ||
706 | client.in = -1; | |
707 | client.out = -1; | |
708 | client.git_cmd = 1; | |
709 | client.argv = rpc->argv; | |
710 | if (start_command(&client)) | |
711 | exit(1); | |
712 | if (preamble) | |
713 | write_or_die(client.in, preamble->buf, preamble->len); | |
714 | if (heads) | |
715 | write_or_die(client.in, heads->buf, heads->len); | |
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 | ||
723 | strbuf_addf(&buf, "%s%s", url.buf, svc); | |
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 | ||
729 | strbuf_addf(&buf, "Accept: application/x-%s-result", svc); | |
730 | rpc->hdr_accept = strbuf_detach(&buf, NULL); | |
731 | ||
732 | while (!err) { | |
733 | int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0); | |
734 | if (!n) | |
735 | break; | |
736 | rpc->pos = 0; | |
737 | rpc->len = n; | |
738 | err |= post_rpc(rpc); | |
739 | } | |
740 | ||
741 | close(client.in); | |
742 | client.in = -1; | |
743 | if (!err) { | |
744 | strbuf_read(&rpc->result, client.out, 0); | |
745 | } else { | |
746 | char buf[4096]; | |
747 | for (;;) | |
748 | if (xread(client.out, buf, sizeof(buf)) <= 0) | |
749 | break; | |
750 | } | |
751 | ||
752 | close(client.out); | |
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 | ||
764 | static int fetch_dumb(int nr_heads, struct ref **to_fetch) | |
765 | { | |
766 | struct walker *walker; | |
767 | char **targets; | |
768 | int ret, i; | |
769 | ||
770 | ALLOC_ARRAY(targets, nr_heads); | |
771 | if (options.depth || options.deepen_since) | |
772 | die("dumb http transport does not support shallow capabilities"); | |
773 | for (i = 0; i < nr_heads; i++) | |
774 | targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid)); | |
775 | ||
776 | walker = get_http_walker(url.buf); | |
777 | walker->get_all = 1; | |
778 | walker->get_tree = 1; | |
779 | walker->get_history = 1; | |
780 | walker->get_verbosely = options.verbosity >= 3; | |
781 | walker->get_recover = 0; | |
782 | ret = walker_fetch(walker, nr_heads, targets, NULL, NULL); | |
783 | walker_free(walker); | |
784 | ||
785 | for (i = 0; i < nr_heads; i++) | |
786 | free(targets[i]); | |
787 | free(targets); | |
788 | ||
789 | return ret ? error("fetch failed.") : 0; | |
790 | } | |
791 | ||
792 | static int fetch_git(struct discovery *heads, | |
793 | int nr_heads, struct ref **to_fetch) | |
794 | { | |
795 | struct rpc_state rpc; | |
796 | struct strbuf preamble = STRBUF_INIT; | |
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); | |
802 | if (options.followtags) | |
803 | argv_array_push(&args, "--include-tag"); | |
804 | if (options.thin) | |
805 | argv_array_push(&args, "--thin"); | |
806 | if (options.verbosity >= 3) | |
807 | argv_array_pushl(&args, "-v", "-v", NULL); | |
808 | if (options.check_self_contained_and_connected) | |
809 | argv_array_push(&args, "--check-self-contained-and-connected"); | |
810 | if (options.cloning) | |
811 | argv_array_push(&args, "--cloning"); | |
812 | if (options.update_shallow) | |
813 | argv_array_push(&args, "--update-shallow"); | |
814 | if (!options.progress) | |
815 | argv_array_push(&args, "--no-progress"); | |
816 | if (options.depth) | |
817 | argv_array_pushf(&args, "--depth=%lu", options.depth); | |
818 | if (options.deepen_since) | |
819 | argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since); | |
820 | for (i = 0; i < options.deepen_not.nr; i++) | |
821 | argv_array_pushf(&args, "--shallow-exclude=%s", | |
822 | options.deepen_not.items[i].string); | |
823 | if (options.deepen_relative && options.depth) | |
824 | argv_array_push(&args, "--deepen-relative"); | |
825 | argv_array_push(&args, url.buf); | |
826 | ||
827 | for (i = 0; i < nr_heads; i++) { | |
828 | struct ref *ref = to_fetch[i]; | |
829 | if (!*ref->name) | |
830 | die("cannot fetch by sha1 over smart http"); | |
831 | packet_buf_write(&preamble, "%s %s\n", | |
832 | oid_to_hex(&ref->old_oid), ref->name); | |
833 | } | |
834 | packet_buf_flush(&preamble); | |
835 | ||
836 | memset(&rpc, 0, sizeof(rpc)); | |
837 | rpc.service_name = "git-upload-pack", | |
838 | rpc.argv = args.argv; | |
839 | rpc.stdin_preamble = &preamble; | |
840 | rpc.gzip_request = 1; | |
841 | ||
842 | err = rpc_service(&rpc, heads); | |
843 | if (rpc.result.len) | |
844 | write_or_die(1, rpc.result.buf, rpc.result.len); | |
845 | strbuf_release(&rpc.result); | |
846 | strbuf_release(&preamble); | |
847 | argv_array_clear(&args); | |
848 | return err; | |
849 | } | |
850 | ||
851 | static int fetch(int nr_heads, struct ref **to_fetch) | |
852 | { | |
853 | struct discovery *d = discover_refs("git-upload-pack", 0); | |
854 | if (d->proto_git) | |
855 | return fetch_git(d, nr_heads, to_fetch); | |
856 | else | |
857 | return fetch_dumb(nr_heads, to_fetch); | |
858 | } | |
859 | ||
860 | static 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 { | |
868 | const char *p; | |
869 | if (skip_prefix(buf->buf, "fetch ", &p)) { | |
870 | const char *name; | |
871 | struct ref *ref; | |
872 | struct object_id old_oid; | |
873 | ||
874 | if (get_oid_hex(p, &old_oid)) | |
875 | die("protocol error: expected sha/ref, got %s'", p); | |
876 | if (p[GIT_SHA1_HEXSZ] == ' ') | |
877 | name = p + GIT_SHA1_HEXSZ + 1; | |
878 | else if (!p[GIT_SHA1_HEXSZ]) | |
879 | name = ""; | |
880 | else | |
881 | die("protocol error: expected sha/ref, got %s'", p); | |
882 | ||
883 | ref = alloc_ref(name); | |
884 | oidcpy(&ref->old_oid, &old_oid); | |
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); | |
896 | if (strbuf_getline_lf(buf, stdin) == EOF) | |
897 | return; | |
898 | if (!*buf->buf) | |
899 | break; | |
900 | } while (1); | |
901 | ||
902 | if (fetch(nr_heads, to_fetch)) | |
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 | ||
912 | static int push_dav(int nr_spec, char **specs) | |
913 | { | |
914 | struct child_process child = CHILD_PROCESS_INIT; | |
915 | size_t i; | |
916 | ||
917 | child.git_cmd = 1; | |
918 | argv_array_push(&child.args, "http-push"); | |
919 | argv_array_push(&child.args, "--helper-status"); | |
920 | if (options.dry_run) | |
921 | argv_array_push(&child.args, "--dry-run"); | |
922 | if (options.verbosity > 1) | |
923 | argv_array_push(&child.args, "--verbose"); | |
924 | argv_array_push(&child.args, url.buf); | |
925 | for (i = 0; i < nr_spec; i++) | |
926 | argv_array_push(&child.args, specs[i]); | |
927 | ||
928 | if (run_command(&child)) | |
929 | die("git-http-push failed"); | |
930 | return 0; | |
931 | } | |
932 | ||
933 | static int push_git(struct discovery *heads, int nr_spec, char **specs) | |
934 | { | |
935 | struct rpc_state rpc; | |
936 | int i, err; | |
937 | struct argv_array args; | |
938 | struct string_list_item *cas_option; | |
939 | struct strbuf preamble = STRBUF_INIT; | |
940 | ||
941 | argv_array_init(&args); | |
942 | argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status", | |
943 | NULL); | |
944 | ||
945 | if (options.thin) | |
946 | argv_array_push(&args, "--thin"); | |
947 | if (options.dry_run) | |
948 | argv_array_push(&args, "--dry-run"); | |
949 | if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS) | |
950 | argv_array_push(&args, "--signed=yes"); | |
951 | else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED) | |
952 | argv_array_push(&args, "--signed=if-asked"); | |
953 | if (options.verbosity == 0) | |
954 | argv_array_push(&args, "--quiet"); | |
955 | else if (options.verbosity > 1) | |
956 | argv_array_push(&args, "--verbose"); | |
957 | for (i = 0; i < options.push_options.nr; i++) | |
958 | argv_array_pushf(&args, "--push-option=%s", | |
959 | options.push_options.items[i].string); | |
960 | argv_array_push(&args, options.progress ? "--progress" : "--no-progress"); | |
961 | for_each_string_list_item(cas_option, &cas_options) | |
962 | argv_array_push(&args, cas_option->string); | |
963 | argv_array_push(&args, url.buf); | |
964 | ||
965 | argv_array_push(&args, "--stdin"); | |
966 | for (i = 0; i < nr_spec; i++) | |
967 | packet_buf_write(&preamble, "%s\n", specs[i]); | |
968 | packet_buf_flush(&preamble); | |
969 | ||
970 | memset(&rpc, 0, sizeof(rpc)); | |
971 | rpc.service_name = "git-receive-pack", | |
972 | rpc.argv = args.argv; | |
973 | rpc.stdin_preamble = &preamble; | |
974 | ||
975 | err = rpc_service(&rpc, heads); | |
976 | if (rpc.result.len) | |
977 | write_or_die(1, rpc.result.buf, rpc.result.len); | |
978 | strbuf_release(&rpc.result); | |
979 | strbuf_release(&preamble); | |
980 | argv_array_clear(&args); | |
981 | return err; | |
982 | } | |
983 | ||
984 | static int push(int nr_spec, char **specs) | |
985 | { | |
986 | struct discovery *heads = discover_refs("git-receive-pack", 1); | |
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 | ||
997 | static void parse_push(struct strbuf *buf) | |
998 | { | |
999 | char **specs = NULL; | |
1000 | int alloc_spec = 0, nr_spec = 0, i, ret; | |
1001 | ||
1002 | do { | |
1003 | if (starts_with(buf->buf, "push ")) { | |
1004 | ALLOC_GROW(specs, nr_spec + 1, alloc_spec); | |
1005 | specs[nr_spec++] = xstrdup(buf->buf + 5); | |
1006 | } | |
1007 | else | |
1008 | die("http transport does not support %s", buf->buf); | |
1009 | ||
1010 | strbuf_reset(buf); | |
1011 | if (strbuf_getline_lf(buf, stdin) == EOF) | |
1012 | goto free_specs; | |
1013 | if (!*buf->buf) | |
1014 | break; | |
1015 | } while (1); | |
1016 | ||
1017 | ret = push(nr_spec, specs); | |
1018 | printf("\n"); | |
1019 | fflush(stdout); | |
1020 | ||
1021 | if (ret) | |
1022 | exit(128); /* error already reported */ | |
1023 | ||
1024 | free_specs: | |
1025 | for (i = 0; i < nr_spec; i++) | |
1026 | free(specs[i]); | |
1027 | free(specs); | |
1028 | } | |
1029 | ||
1030 | int cmd_main(int argc, const char **argv) | |
1031 | { | |
1032 | struct strbuf buf = STRBUF_INIT; | |
1033 | int nongit; | |
1034 | ||
1035 | setup_git_directory_gently(&nongit); | |
1036 | if (argc < 2) { | |
1037 | error("remote-curl: usage: git remote-curl <remote> [<url>]"); | |
1038 | return 1; | |
1039 | } | |
1040 | ||
1041 | options.verbosity = 1; | |
1042 | options.progress = !!isatty(2); | |
1043 | options.thin = 1; | |
1044 | string_list_init(&options.deepen_not, 1); | |
1045 | string_list_init(&options.push_options, 1); | |
1046 | ||
1047 | remote = remote_get(argv[1]); | |
1048 | ||
1049 | if (argc > 2) { | |
1050 | end_url_with_slash(&url, argv[2]); | |
1051 | } else { | |
1052 | end_url_with_slash(&url, remote->url[0]); | |
1053 | } | |
1054 | ||
1055 | http_init(remote, url.buf, 0); | |
1056 | ||
1057 | do { | |
1058 | const char *arg; | |
1059 | ||
1060 | if (strbuf_getline_lf(&buf, stdin) == EOF) { | |
1061 | if (ferror(stdin)) | |
1062 | error("remote-curl: error reading command stream from git"); | |
1063 | return 1; | |
1064 | } | |
1065 | if (buf.len == 0) | |
1066 | break; | |
1067 | if (starts_with(buf.buf, "fetch ")) { | |
1068 | if (nongit) | |
1069 | die("remote-curl: fetch attempted without a local repo"); | |
1070 | parse_fetch(&buf); | |
1071 | ||
1072 | } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) { | |
1073 | int for_push = !!strstr(buf.buf + 4, "for-push"); | |
1074 | output_refs(get_refs(for_push)); | |
1075 | ||
1076 | } else if (starts_with(buf.buf, "push ")) { | |
1077 | parse_push(&buf); | |
1078 | ||
1079 | } else if (skip_prefix(buf.buf, "option ", &arg)) { | |
1080 | char *value = strchr(arg, ' '); | |
1081 | int result; | |
1082 | ||
1083 | if (value) | |
1084 | *value++ = '\0'; | |
1085 | else | |
1086 | value = "true"; | |
1087 | ||
1088 | result = set_option(arg, value); | |
1089 | if (!result) | |
1090 | printf("ok\n"); | |
1091 | else if (result < 0) | |
1092 | printf("error invalid value\n"); | |
1093 | else | |
1094 | printf("unsupported\n"); | |
1095 | fflush(stdout); | |
1096 | ||
1097 | } else if (!strcmp(buf.buf, "capabilities")) { | |
1098 | printf("fetch\n"); | |
1099 | printf("option\n"); | |
1100 | printf("push\n"); | |
1101 | printf("check-connectivity\n"); | |
1102 | printf("\n"); | |
1103 | fflush(stdout); | |
1104 | } else { | |
1105 | error("remote-curl: unknown command '%s' from git", buf.buf); | |
1106 | return 1; | |
1107 | } | |
1108 | strbuf_reset(&buf); | |
1109 | } while (1); | |
1110 | ||
1111 | http_cleanup(); | |
1112 | ||
1113 | return 0; | |
1114 | } |