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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 | #include "quote.h" | |
17 | ||
18 | static struct remote *remote; | |
19 | /* always ends with a trailing slash */ | |
20 | static struct strbuf url = STRBUF_INIT; | |
21 | ||
22 | struct options { | |
23 | int verbosity; | |
24 | unsigned long depth; | |
25 | char *deepen_since; | |
26 | struct string_list deepen_not; | |
27 | struct string_list push_options; | |
28 | char *filter; | |
29 | unsigned progress : 1, | |
30 | check_self_contained_and_connected : 1, | |
31 | cloning : 1, | |
32 | update_shallow : 1, | |
33 | followtags : 1, | |
34 | dry_run : 1, | |
35 | thin : 1, | |
36 | /* One of the SEND_PACK_PUSH_CERT_* constants. */ | |
37 | push_cert : 2, | |
38 | deepen_relative : 1, | |
39 | from_promisor : 1, | |
40 | no_dependents : 1; | |
41 | }; | |
42 | static struct options options; | |
43 | static struct string_list cas_options = STRING_LIST_INIT_DUP; | |
44 | ||
45 | static int set_option(const char *name, const char *value) | |
46 | { | |
47 | if (!strcmp(name, "verbosity")) { | |
48 | char *end; | |
49 | int v = strtol(value, &end, 10); | |
50 | if (value == end || *end) | |
51 | return -1; | |
52 | options.verbosity = v; | |
53 | return 0; | |
54 | } | |
55 | else if (!strcmp(name, "progress")) { | |
56 | if (!strcmp(value, "true")) | |
57 | options.progress = 1; | |
58 | else if (!strcmp(value, "false")) | |
59 | options.progress = 0; | |
60 | else | |
61 | return -1; | |
62 | return 0; | |
63 | } | |
64 | else if (!strcmp(name, "depth")) { | |
65 | char *end; | |
66 | unsigned long v = strtoul(value, &end, 10); | |
67 | if (value == end || *end) | |
68 | return -1; | |
69 | options.depth = v; | |
70 | return 0; | |
71 | } | |
72 | else if (!strcmp(name, "deepen-since")) { | |
73 | options.deepen_since = xstrdup(value); | |
74 | return 0; | |
75 | } | |
76 | else if (!strcmp(name, "deepen-not")) { | |
77 | string_list_append(&options.deepen_not, value); | |
78 | return 0; | |
79 | } | |
80 | else if (!strcmp(name, "deepen-relative")) { | |
81 | if (!strcmp(value, "true")) | |
82 | options.deepen_relative = 1; | |
83 | else if (!strcmp(value, "false")) | |
84 | options.deepen_relative = 0; | |
85 | else | |
86 | return -1; | |
87 | return 0; | |
88 | } | |
89 | else if (!strcmp(name, "followtags")) { | |
90 | if (!strcmp(value, "true")) | |
91 | options.followtags = 1; | |
92 | else if (!strcmp(value, "false")) | |
93 | options.followtags = 0; | |
94 | else | |
95 | return -1; | |
96 | return 0; | |
97 | } | |
98 | else if (!strcmp(name, "dry-run")) { | |
99 | if (!strcmp(value, "true")) | |
100 | options.dry_run = 1; | |
101 | else if (!strcmp(value, "false")) | |
102 | options.dry_run = 0; | |
103 | else | |
104 | return -1; | |
105 | return 0; | |
106 | } | |
107 | else if (!strcmp(name, "check-connectivity")) { | |
108 | if (!strcmp(value, "true")) | |
109 | options.check_self_contained_and_connected = 1; | |
110 | else if (!strcmp(value, "false")) | |
111 | options.check_self_contained_and_connected = 0; | |
112 | else | |
113 | return -1; | |
114 | return 0; | |
115 | } | |
116 | else if (!strcmp(name, "cas")) { | |
117 | struct strbuf val = STRBUF_INIT; | |
118 | strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value); | |
119 | string_list_append(&cas_options, val.buf); | |
120 | strbuf_release(&val); | |
121 | return 0; | |
122 | } else if (!strcmp(name, "cloning")) { | |
123 | if (!strcmp(value, "true")) | |
124 | options.cloning = 1; | |
125 | else if (!strcmp(value, "false")) | |
126 | options.cloning = 0; | |
127 | else | |
128 | return -1; | |
129 | return 0; | |
130 | } else if (!strcmp(name, "update-shallow")) { | |
131 | if (!strcmp(value, "true")) | |
132 | options.update_shallow = 1; | |
133 | else if (!strcmp(value, "false")) | |
134 | options.update_shallow = 0; | |
135 | else | |
136 | return -1; | |
137 | return 0; | |
138 | } else if (!strcmp(name, "pushcert")) { | |
139 | if (!strcmp(value, "true")) | |
140 | options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS; | |
141 | else if (!strcmp(value, "false")) | |
142 | options.push_cert = SEND_PACK_PUSH_CERT_NEVER; | |
143 | else if (!strcmp(value, "if-asked")) | |
144 | options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED; | |
145 | else | |
146 | return -1; | |
147 | return 0; | |
148 | } else if (!strcmp(name, "push-option")) { | |
149 | if (*value != '"') | |
150 | string_list_append(&options.push_options, value); | |
151 | else { | |
152 | struct strbuf unquoted = STRBUF_INIT; | |
153 | if (unquote_c_style(&unquoted, value, NULL) < 0) | |
154 | die("invalid quoting in push-option value"); | |
155 | string_list_append_nodup(&options.push_options, | |
156 | strbuf_detach(&unquoted, NULL)); | |
157 | } | |
158 | return 0; | |
159 | ||
160 | #if LIBCURL_VERSION_NUM >= 0x070a08 | |
161 | } else if (!strcmp(name, "family")) { | |
162 | if (!strcmp(value, "ipv4")) | |
163 | git_curl_ipresolve = CURL_IPRESOLVE_V4; | |
164 | else if (!strcmp(value, "ipv6")) | |
165 | git_curl_ipresolve = CURL_IPRESOLVE_V6; | |
166 | else if (!strcmp(value, "all")) | |
167 | git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER; | |
168 | else | |
169 | return -1; | |
170 | return 0; | |
171 | #endif /* LIBCURL_VERSION_NUM >= 0x070a08 */ | |
172 | } else if (!strcmp(name, "from-promisor")) { | |
173 | options.from_promisor = 1; | |
174 | return 0; | |
175 | } else if (!strcmp(name, "no-dependents")) { | |
176 | options.no_dependents = 1; | |
177 | return 0; | |
178 | } else if (!strcmp(name, "filter")) { | |
179 | options.filter = xstrdup(value);; | |
180 | return 0; | |
181 | } else { | |
182 | return 1 /* unsupported */; | |
183 | } | |
184 | } | |
185 | ||
186 | struct discovery { | |
187 | const char *service; | |
188 | char *buf_alloc; | |
189 | char *buf; | |
190 | size_t len; | |
191 | struct ref *refs; | |
192 | struct oid_array shallow; | |
193 | unsigned proto_git : 1; | |
194 | }; | |
195 | static struct discovery *last_discovery; | |
196 | ||
197 | static struct ref *parse_git_refs(struct discovery *heads, int for_push) | |
198 | { | |
199 | struct ref *list = NULL; | |
200 | get_remote_heads(-1, heads->buf, heads->len, &list, | |
201 | for_push ? REF_NORMAL : 0, NULL, &heads->shallow); | |
202 | return list; | |
203 | } | |
204 | ||
205 | static struct ref *parse_info_refs(struct discovery *heads) | |
206 | { | |
207 | char *data, *start, *mid; | |
208 | char *ref_name; | |
209 | int i = 0; | |
210 | ||
211 | struct ref *refs = NULL; | |
212 | struct ref *ref = NULL; | |
213 | struct ref *last_ref = NULL; | |
214 | ||
215 | data = heads->buf; | |
216 | start = NULL; | |
217 | mid = data; | |
218 | while (i < heads->len) { | |
219 | if (!start) { | |
220 | start = &data[i]; | |
221 | } | |
222 | if (data[i] == '\t') | |
223 | mid = &data[i]; | |
224 | if (data[i] == '\n') { | |
225 | if (mid - start != 40) | |
226 | die("%sinfo/refs not valid: is this a git repository?", | |
227 | url.buf); | |
228 | data[i] = 0; | |
229 | ref_name = mid + 1; | |
230 | ref = alloc_ref(ref_name); | |
231 | get_oid_hex(start, &ref->old_oid); | |
232 | if (!refs) | |
233 | refs = ref; | |
234 | if (last_ref) | |
235 | last_ref->next = ref; | |
236 | last_ref = ref; | |
237 | start = NULL; | |
238 | } | |
239 | i++; | |
240 | } | |
241 | ||
242 | ref = alloc_ref("HEAD"); | |
243 | if (!http_fetch_ref(url.buf, ref) && | |
244 | !resolve_remote_symref(ref, refs)) { | |
245 | ref->next = refs; | |
246 | refs = ref; | |
247 | } else { | |
248 | free(ref); | |
249 | } | |
250 | ||
251 | return refs; | |
252 | } | |
253 | ||
254 | static void free_discovery(struct discovery *d) | |
255 | { | |
256 | if (d) { | |
257 | if (d == last_discovery) | |
258 | last_discovery = NULL; | |
259 | free(d->shallow.oid); | |
260 | free(d->buf_alloc); | |
261 | free_refs(d->refs); | |
262 | free(d); | |
263 | } | |
264 | } | |
265 | ||
266 | static int show_http_message(struct strbuf *type, struct strbuf *charset, | |
267 | struct strbuf *msg) | |
268 | { | |
269 | const char *p, *eol; | |
270 | ||
271 | /* | |
272 | * We only show text/plain parts, as other types are likely | |
273 | * to be ugly to look at on the user's terminal. | |
274 | */ | |
275 | if (strcmp(type->buf, "text/plain")) | |
276 | return -1; | |
277 | if (charset->len) | |
278 | strbuf_reencode(msg, charset->buf, get_log_output_encoding()); | |
279 | ||
280 | strbuf_trim(msg); | |
281 | if (!msg->len) | |
282 | return -1; | |
283 | ||
284 | p = msg->buf; | |
285 | do { | |
286 | eol = strchrnul(p, '\n'); | |
287 | fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p); | |
288 | p = eol + 1; | |
289 | } while(*eol); | |
290 | return 0; | |
291 | } | |
292 | ||
293 | static struct discovery *discover_refs(const char *service, int for_push) | |
294 | { | |
295 | struct strbuf exp = STRBUF_INIT; | |
296 | struct strbuf type = STRBUF_INIT; | |
297 | struct strbuf charset = STRBUF_INIT; | |
298 | struct strbuf buffer = STRBUF_INIT; | |
299 | struct strbuf refs_url = STRBUF_INIT; | |
300 | struct strbuf effective_url = STRBUF_INIT; | |
301 | struct discovery *last = last_discovery; | |
302 | int http_ret, maybe_smart = 0; | |
303 | struct http_get_options http_options; | |
304 | ||
305 | if (last && !strcmp(service, last->service)) | |
306 | return last; | |
307 | free_discovery(last); | |
308 | ||
309 | strbuf_addf(&refs_url, "%sinfo/refs", url.buf); | |
310 | if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) && | |
311 | git_env_bool("GIT_SMART_HTTP", 1)) { | |
312 | maybe_smart = 1; | |
313 | if (!strchr(url.buf, '?')) | |
314 | strbuf_addch(&refs_url, '?'); | |
315 | else | |
316 | strbuf_addch(&refs_url, '&'); | |
317 | strbuf_addf(&refs_url, "service=%s", service); | |
318 | } | |
319 | ||
320 | memset(&http_options, 0, sizeof(http_options)); | |
321 | http_options.content_type = &type; | |
322 | http_options.charset = &charset; | |
323 | http_options.effective_url = &effective_url; | |
324 | http_options.base_url = &url; | |
325 | http_options.initial_request = 1; | |
326 | http_options.no_cache = 1; | |
327 | http_options.keep_error = 1; | |
328 | ||
329 | http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options); | |
330 | switch (http_ret) { | |
331 | case HTTP_OK: | |
332 | break; | |
333 | case HTTP_MISSING_TARGET: | |
334 | show_http_message(&type, &charset, &buffer); | |
335 | die("repository '%s' not found", url.buf); | |
336 | case HTTP_NOAUTH: | |
337 | show_http_message(&type, &charset, &buffer); | |
338 | die("Authentication failed for '%s'", url.buf); | |
339 | default: | |
340 | show_http_message(&type, &charset, &buffer); | |
341 | die("unable to access '%s': %s", url.buf, curl_errorstr); | |
342 | } | |
343 | ||
344 | if (options.verbosity && !starts_with(refs_url.buf, url.buf)) | |
345 | warning(_("redirecting to %s"), url.buf); | |
346 | ||
347 | last= xcalloc(1, sizeof(*last_discovery)); | |
348 | last->service = service; | |
349 | last->buf_alloc = strbuf_detach(&buffer, &last->len); | |
350 | last->buf = last->buf_alloc; | |
351 | ||
352 | strbuf_addf(&exp, "application/x-%s-advertisement", service); | |
353 | if (maybe_smart && | |
354 | (5 <= last->len && last->buf[4] == '#') && | |
355 | !strbuf_cmp(&exp, &type)) { | |
356 | char *line; | |
357 | ||
358 | /* | |
359 | * smart HTTP response; validate that the service | |
360 | * pkt-line matches our request. | |
361 | */ | |
362 | line = packet_read_line_buf(&last->buf, &last->len, NULL); | |
363 | if (!line) | |
364 | die("invalid server response; expected service, got flush packet"); | |
365 | ||
366 | strbuf_reset(&exp); | |
367 | strbuf_addf(&exp, "# service=%s", service); | |
368 | if (strcmp(line, exp.buf)) | |
369 | die("invalid server response; got '%s'", line); | |
370 | strbuf_release(&exp); | |
371 | ||
372 | /* The header can include additional metadata lines, up | |
373 | * until a packet flush marker. Ignore these now, but | |
374 | * in the future we might start to scan them. | |
375 | */ | |
376 | while (packet_read_line_buf(&last->buf, &last->len, NULL)) | |
377 | ; | |
378 | ||
379 | last->proto_git = 1; | |
380 | } | |
381 | ||
382 | if (last->proto_git) | |
383 | last->refs = parse_git_refs(last, for_push); | |
384 | else | |
385 | last->refs = parse_info_refs(last); | |
386 | ||
387 | strbuf_release(&refs_url); | |
388 | strbuf_release(&exp); | |
389 | strbuf_release(&type); | |
390 | strbuf_release(&charset); | |
391 | strbuf_release(&effective_url); | |
392 | strbuf_release(&buffer); | |
393 | last_discovery = last; | |
394 | return last; | |
395 | } | |
396 | ||
397 | static struct ref *get_refs(int for_push) | |
398 | { | |
399 | struct discovery *heads; | |
400 | ||
401 | if (for_push) | |
402 | heads = discover_refs("git-receive-pack", for_push); | |
403 | else | |
404 | heads = discover_refs("git-upload-pack", for_push); | |
405 | ||
406 | return heads->refs; | |
407 | } | |
408 | ||
409 | static void output_refs(struct ref *refs) | |
410 | { | |
411 | struct ref *posn; | |
412 | for (posn = refs; posn; posn = posn->next) { | |
413 | if (posn->symref) | |
414 | printf("@%s %s\n", posn->symref, posn->name); | |
415 | else | |
416 | printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name); | |
417 | } | |
418 | printf("\n"); | |
419 | fflush(stdout); | |
420 | } | |
421 | ||
422 | struct rpc_state { | |
423 | const char *service_name; | |
424 | const char **argv; | |
425 | struct strbuf *stdin_preamble; | |
426 | char *service_url; | |
427 | char *hdr_content_type; | |
428 | char *hdr_accept; | |
429 | char *buf; | |
430 | size_t alloc; | |
431 | size_t len; | |
432 | size_t pos; | |
433 | int in; | |
434 | int out; | |
435 | int any_written; | |
436 | struct strbuf result; | |
437 | unsigned gzip_request : 1; | |
438 | unsigned initial_buffer : 1; | |
439 | }; | |
440 | ||
441 | static size_t rpc_out(void *ptr, size_t eltsize, | |
442 | size_t nmemb, void *buffer_) | |
443 | { | |
444 | size_t max = eltsize * nmemb; | |
445 | struct rpc_state *rpc = buffer_; | |
446 | size_t avail = rpc->len - rpc->pos; | |
447 | ||
448 | if (!avail) { | |
449 | rpc->initial_buffer = 0; | |
450 | avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0); | |
451 | if (!avail) | |
452 | return 0; | |
453 | rpc->pos = 0; | |
454 | rpc->len = avail; | |
455 | } | |
456 | ||
457 | if (max < avail) | |
458 | avail = max; | |
459 | memcpy(ptr, rpc->buf + rpc->pos, avail); | |
460 | rpc->pos += avail; | |
461 | return avail; | |
462 | } | |
463 | ||
464 | #ifndef NO_CURL_IOCTL | |
465 | static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp) | |
466 | { | |
467 | struct rpc_state *rpc = clientp; | |
468 | ||
469 | switch (cmd) { | |
470 | case CURLIOCMD_NOP: | |
471 | return CURLIOE_OK; | |
472 | ||
473 | case CURLIOCMD_RESTARTREAD: | |
474 | if (rpc->initial_buffer) { | |
475 | rpc->pos = 0; | |
476 | return CURLIOE_OK; | |
477 | } | |
478 | error("unable to rewind rpc post data - try increasing http.postBuffer"); | |
479 | return CURLIOE_FAILRESTART; | |
480 | ||
481 | default: | |
482 | return CURLIOE_UNKNOWNCMD; | |
483 | } | |
484 | } | |
485 | #endif | |
486 | ||
487 | static size_t rpc_in(char *ptr, size_t eltsize, | |
488 | size_t nmemb, void *buffer_) | |
489 | { | |
490 | size_t size = eltsize * nmemb; | |
491 | struct rpc_state *rpc = buffer_; | |
492 | if (size) | |
493 | rpc->any_written = 1; | |
494 | write_or_die(rpc->in, ptr, size); | |
495 | return size; | |
496 | } | |
497 | ||
498 | static int run_slot(struct active_request_slot *slot, | |
499 | struct slot_results *results) | |
500 | { | |
501 | int err; | |
502 | struct slot_results results_buf; | |
503 | ||
504 | if (!results) | |
505 | results = &results_buf; | |
506 | ||
507 | err = run_one_slot(slot, results); | |
508 | ||
509 | if (err != HTTP_OK && err != HTTP_REAUTH) { | |
510 | struct strbuf msg = STRBUF_INIT; | |
511 | if (results->http_code && results->http_code != 200) | |
512 | strbuf_addf(&msg, "HTTP %ld", results->http_code); | |
513 | if (results->curl_result != CURLE_OK) { | |
514 | if (msg.len) | |
515 | strbuf_addch(&msg, ' '); | |
516 | strbuf_addf(&msg, "curl %d", results->curl_result); | |
517 | if (curl_errorstr[0]) { | |
518 | strbuf_addch(&msg, ' '); | |
519 | strbuf_addstr(&msg, curl_errorstr); | |
520 | } | |
521 | } | |
522 | error("RPC failed; %s", msg.buf); | |
523 | strbuf_release(&msg); | |
524 | } | |
525 | ||
526 | return err; | |
527 | } | |
528 | ||
529 | static int probe_rpc(struct rpc_state *rpc, struct slot_results *results) | |
530 | { | |
531 | struct active_request_slot *slot; | |
532 | struct curl_slist *headers = http_copy_default_headers(); | |
533 | struct strbuf buf = STRBUF_INIT; | |
534 | int err; | |
535 | ||
536 | slot = get_active_slot(); | |
537 | ||
538 | headers = curl_slist_append(headers, rpc->hdr_content_type); | |
539 | headers = curl_slist_append(headers, rpc->hdr_accept); | |
540 | ||
541 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
542 | curl_easy_setopt(slot->curl, CURLOPT_POST, 1); | |
543 | curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url); | |
544 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL); | |
545 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000"); | |
546 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4); | |
547 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
548 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
549 | curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf); | |
550 | ||
551 | err = run_slot(slot, results); | |
552 | ||
553 | curl_slist_free_all(headers); | |
554 | strbuf_release(&buf); | |
555 | return err; | |
556 | } | |
557 | ||
558 | static curl_off_t xcurl_off_t(ssize_t len) { | |
559 | if (len > maximum_signed_value_of_type(curl_off_t)) | |
560 | die("cannot handle pushes this big"); | |
561 | return (curl_off_t) len; | |
562 | } | |
563 | ||
564 | static int post_rpc(struct rpc_state *rpc) | |
565 | { | |
566 | struct active_request_slot *slot; | |
567 | struct curl_slist *headers = http_copy_default_headers(); | |
568 | int use_gzip = rpc->gzip_request; | |
569 | char *gzip_body = NULL; | |
570 | size_t gzip_size = 0; | |
571 | int err, large_request = 0; | |
572 | int needs_100_continue = 0; | |
573 | ||
574 | /* Try to load the entire request, if we can fit it into the | |
575 | * allocated buffer space we can use HTTP/1.0 and avoid the | |
576 | * chunked encoding mess. | |
577 | */ | |
578 | while (1) { | |
579 | size_t left = rpc->alloc - rpc->len; | |
580 | char *buf = rpc->buf + rpc->len; | |
581 | int n; | |
582 | ||
583 | if (left < LARGE_PACKET_MAX) { | |
584 | large_request = 1; | |
585 | use_gzip = 0; | |
586 | break; | |
587 | } | |
588 | ||
589 | n = packet_read(rpc->out, NULL, NULL, buf, left, 0); | |
590 | if (!n) | |
591 | break; | |
592 | rpc->len += n; | |
593 | } | |
594 | ||
595 | if (large_request) { | |
596 | struct slot_results results; | |
597 | ||
598 | do { | |
599 | err = probe_rpc(rpc, &results); | |
600 | if (err == HTTP_REAUTH) | |
601 | credential_fill(&http_auth); | |
602 | } while (err == HTTP_REAUTH); | |
603 | if (err != HTTP_OK) | |
604 | return -1; | |
605 | ||
606 | if (results.auth_avail & CURLAUTH_GSSNEGOTIATE) | |
607 | needs_100_continue = 1; | |
608 | } | |
609 | ||
610 | headers = curl_slist_append(headers, rpc->hdr_content_type); | |
611 | headers = curl_slist_append(headers, rpc->hdr_accept); | |
612 | headers = curl_slist_append(headers, needs_100_continue ? | |
613 | "Expect: 100-continue" : "Expect:"); | |
614 | ||
615 | retry: | |
616 | slot = get_active_slot(); | |
617 | ||
618 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
619 | curl_easy_setopt(slot->curl, CURLOPT_POST, 1); | |
620 | curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url); | |
621 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); | |
622 | ||
623 | if (large_request) { | |
624 | /* The request body is large and the size cannot be predicted. | |
625 | * We must use chunked encoding to send it. | |
626 | */ | |
627 | headers = curl_slist_append(headers, "Transfer-Encoding: chunked"); | |
628 | rpc->initial_buffer = 1; | |
629 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out); | |
630 | curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc); | |
631 | #ifndef NO_CURL_IOCTL | |
632 | curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl); | |
633 | curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc); | |
634 | #endif | |
635 | if (options.verbosity > 1) { | |
636 | fprintf(stderr, "POST %s (chunked)\n", rpc->service_name); | |
637 | fflush(stderr); | |
638 | } | |
639 | ||
640 | } else if (gzip_body) { | |
641 | /* | |
642 | * If we are looping to retry authentication, then the previous | |
643 | * run will have set up the headers and gzip buffer already, | |
644 | * and we just need to send it. | |
645 | */ | |
646 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body); | |
647 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size)); | |
648 | ||
649 | } else if (use_gzip && 1024 < rpc->len) { | |
650 | /* The client backend isn't giving us compressed data so | |
651 | * we can try to deflate it ourselves, this may save on. | |
652 | * the transfer time. | |
653 | */ | |
654 | git_zstream stream; | |
655 | int ret; | |
656 | ||
657 | git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION); | |
658 | gzip_size = git_deflate_bound(&stream, rpc->len); | |
659 | gzip_body = xmalloc(gzip_size); | |
660 | ||
661 | stream.next_in = (unsigned char *)rpc->buf; | |
662 | stream.avail_in = rpc->len; | |
663 | stream.next_out = (unsigned char *)gzip_body; | |
664 | stream.avail_out = gzip_size; | |
665 | ||
666 | ret = git_deflate(&stream, Z_FINISH); | |
667 | if (ret != Z_STREAM_END) | |
668 | die("cannot deflate request; zlib deflate error %d", ret); | |
669 | ||
670 | ret = git_deflate_end_gently(&stream); | |
671 | if (ret != Z_OK) | |
672 | die("cannot deflate request; zlib end error %d", ret); | |
673 | ||
674 | gzip_size = stream.total_out; | |
675 | ||
676 | headers = curl_slist_append(headers, "Content-Encoding: gzip"); | |
677 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body); | |
678 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size)); | |
679 | ||
680 | if (options.verbosity > 1) { | |
681 | fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n", | |
682 | rpc->service_name, | |
683 | (unsigned long)rpc->len, (unsigned long)gzip_size); | |
684 | fflush(stderr); | |
685 | } | |
686 | } else { | |
687 | /* We know the complete request size in advance, use the | |
688 | * more normal Content-Length approach. | |
689 | */ | |
690 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf); | |
691 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len)); | |
692 | if (options.verbosity > 1) { | |
693 | fprintf(stderr, "POST %s (%lu bytes)\n", | |
694 | rpc->service_name, (unsigned long)rpc->len); | |
695 | fflush(stderr); | |
696 | } | |
697 | } | |
698 | ||
699 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
700 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in); | |
701 | curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc); | |
702 | ||
703 | ||
704 | rpc->any_written = 0; | |
705 | err = run_slot(slot, NULL); | |
706 | if (err == HTTP_REAUTH && !large_request) { | |
707 | credential_fill(&http_auth); | |
708 | goto retry; | |
709 | } | |
710 | if (err != HTTP_OK) | |
711 | err = -1; | |
712 | ||
713 | if (!rpc->any_written) | |
714 | err = -1; | |
715 | ||
716 | curl_slist_free_all(headers); | |
717 | free(gzip_body); | |
718 | return err; | |
719 | } | |
720 | ||
721 | static int rpc_service(struct rpc_state *rpc, struct discovery *heads) | |
722 | { | |
723 | const char *svc = rpc->service_name; | |
724 | struct strbuf buf = STRBUF_INIT; | |
725 | struct strbuf *preamble = rpc->stdin_preamble; | |
726 | struct child_process client = CHILD_PROCESS_INIT; | |
727 | int err = 0; | |
728 | ||
729 | client.in = -1; | |
730 | client.out = -1; | |
731 | client.git_cmd = 1; | |
732 | client.argv = rpc->argv; | |
733 | if (start_command(&client)) | |
734 | exit(1); | |
735 | if (preamble) | |
736 | write_or_die(client.in, preamble->buf, preamble->len); | |
737 | if (heads) | |
738 | write_or_die(client.in, heads->buf, heads->len); | |
739 | ||
740 | rpc->alloc = http_post_buffer; | |
741 | rpc->buf = xmalloc(rpc->alloc); | |
742 | rpc->in = client.in; | |
743 | rpc->out = client.out; | |
744 | strbuf_init(&rpc->result, 0); | |
745 | ||
746 | strbuf_addf(&buf, "%s%s", url.buf, svc); | |
747 | rpc->service_url = strbuf_detach(&buf, NULL); | |
748 | ||
749 | strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc); | |
750 | rpc->hdr_content_type = strbuf_detach(&buf, NULL); | |
751 | ||
752 | strbuf_addf(&buf, "Accept: application/x-%s-result", svc); | |
753 | rpc->hdr_accept = strbuf_detach(&buf, NULL); | |
754 | ||
755 | while (!err) { | |
756 | int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0); | |
757 | if (!n) | |
758 | break; | |
759 | rpc->pos = 0; | |
760 | rpc->len = n; | |
761 | err |= post_rpc(rpc); | |
762 | } | |
763 | ||
764 | close(client.in); | |
765 | client.in = -1; | |
766 | if (!err) { | |
767 | strbuf_read(&rpc->result, client.out, 0); | |
768 | } else { | |
769 | char buf[4096]; | |
770 | for (;;) | |
771 | if (xread(client.out, buf, sizeof(buf)) <= 0) | |
772 | break; | |
773 | } | |
774 | ||
775 | close(client.out); | |
776 | client.out = -1; | |
777 | ||
778 | err |= finish_command(&client); | |
779 | free(rpc->service_url); | |
780 | free(rpc->hdr_content_type); | |
781 | free(rpc->hdr_accept); | |
782 | free(rpc->buf); | |
783 | strbuf_release(&buf); | |
784 | return err; | |
785 | } | |
786 | ||
787 | static int fetch_dumb(int nr_heads, struct ref **to_fetch) | |
788 | { | |
789 | struct walker *walker; | |
790 | char **targets; | |
791 | int ret, i; | |
792 | ||
793 | ALLOC_ARRAY(targets, nr_heads); | |
794 | if (options.depth || options.deepen_since) | |
795 | die("dumb http transport does not support shallow capabilities"); | |
796 | for (i = 0; i < nr_heads; i++) | |
797 | targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid)); | |
798 | ||
799 | walker = get_http_walker(url.buf); | |
800 | walker->get_all = 1; | |
801 | walker->get_tree = 1; | |
802 | walker->get_history = 1; | |
803 | walker->get_verbosely = options.verbosity >= 3; | |
804 | walker->get_recover = 0; | |
805 | ret = walker_fetch(walker, nr_heads, targets, NULL, NULL); | |
806 | walker_free(walker); | |
807 | ||
808 | for (i = 0; i < nr_heads; i++) | |
809 | free(targets[i]); | |
810 | free(targets); | |
811 | ||
812 | return ret ? error("fetch failed.") : 0; | |
813 | } | |
814 | ||
815 | static int fetch_git(struct discovery *heads, | |
816 | int nr_heads, struct ref **to_fetch) | |
817 | { | |
818 | struct rpc_state rpc; | |
819 | struct strbuf preamble = STRBUF_INIT; | |
820 | int i, err; | |
821 | struct argv_array args = ARGV_ARRAY_INIT; | |
822 | ||
823 | argv_array_pushl(&args, "fetch-pack", "--stateless-rpc", | |
824 | "--stdin", "--lock-pack", NULL); | |
825 | if (options.followtags) | |
826 | argv_array_push(&args, "--include-tag"); | |
827 | if (options.thin) | |
828 | argv_array_push(&args, "--thin"); | |
829 | if (options.verbosity >= 3) | |
830 | argv_array_pushl(&args, "-v", "-v", NULL); | |
831 | if (options.check_self_contained_and_connected) | |
832 | argv_array_push(&args, "--check-self-contained-and-connected"); | |
833 | if (options.cloning) | |
834 | argv_array_push(&args, "--cloning"); | |
835 | if (options.update_shallow) | |
836 | argv_array_push(&args, "--update-shallow"); | |
837 | if (!options.progress) | |
838 | argv_array_push(&args, "--no-progress"); | |
839 | if (options.depth) | |
840 | argv_array_pushf(&args, "--depth=%lu", options.depth); | |
841 | if (options.deepen_since) | |
842 | argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since); | |
843 | for (i = 0; i < options.deepen_not.nr; i++) | |
844 | argv_array_pushf(&args, "--shallow-exclude=%s", | |
845 | options.deepen_not.items[i].string); | |
846 | if (options.deepen_relative && options.depth) | |
847 | argv_array_push(&args, "--deepen-relative"); | |
848 | if (options.from_promisor) | |
849 | argv_array_push(&args, "--from-promisor"); | |
850 | if (options.no_dependents) | |
851 | argv_array_push(&args, "--no-dependents"); | |
852 | if (options.filter) | |
853 | argv_array_pushf(&args, "--filter=%s", options.filter); | |
854 | argv_array_push(&args, url.buf); | |
855 | ||
856 | for (i = 0; i < nr_heads; i++) { | |
857 | struct ref *ref = to_fetch[i]; | |
858 | if (!*ref->name) | |
859 | die("cannot fetch by sha1 over smart http"); | |
860 | packet_buf_write(&preamble, "%s %s\n", | |
861 | oid_to_hex(&ref->old_oid), ref->name); | |
862 | } | |
863 | packet_buf_flush(&preamble); | |
864 | ||
865 | memset(&rpc, 0, sizeof(rpc)); | |
866 | rpc.service_name = "git-upload-pack", | |
867 | rpc.argv = args.argv; | |
868 | rpc.stdin_preamble = &preamble; | |
869 | rpc.gzip_request = 1; | |
870 | ||
871 | err = rpc_service(&rpc, heads); | |
872 | if (rpc.result.len) | |
873 | write_or_die(1, rpc.result.buf, rpc.result.len); | |
874 | strbuf_release(&rpc.result); | |
875 | strbuf_release(&preamble); | |
876 | argv_array_clear(&args); | |
877 | return err; | |
878 | } | |
879 | ||
880 | static int fetch(int nr_heads, struct ref **to_fetch) | |
881 | { | |
882 | struct discovery *d = discover_refs("git-upload-pack", 0); | |
883 | if (d->proto_git) | |
884 | return fetch_git(d, nr_heads, to_fetch); | |
885 | else | |
886 | return fetch_dumb(nr_heads, to_fetch); | |
887 | } | |
888 | ||
889 | static void parse_fetch(struct strbuf *buf) | |
890 | { | |
891 | struct ref **to_fetch = NULL; | |
892 | struct ref *list_head = NULL; | |
893 | struct ref **list = &list_head; | |
894 | int alloc_heads = 0, nr_heads = 0; | |
895 | ||
896 | do { | |
897 | const char *p; | |
898 | if (skip_prefix(buf->buf, "fetch ", &p)) { | |
899 | const char *name; | |
900 | struct ref *ref; | |
901 | struct object_id old_oid; | |
902 | ||
903 | if (get_oid_hex(p, &old_oid)) | |
904 | die("protocol error: expected sha/ref, got %s'", p); | |
905 | if (p[GIT_SHA1_HEXSZ] == ' ') | |
906 | name = p + GIT_SHA1_HEXSZ + 1; | |
907 | else if (!p[GIT_SHA1_HEXSZ]) | |
908 | name = ""; | |
909 | else | |
910 | die("protocol error: expected sha/ref, got %s'", p); | |
911 | ||
912 | ref = alloc_ref(name); | |
913 | oidcpy(&ref->old_oid, &old_oid); | |
914 | ||
915 | *list = ref; | |
916 | list = &ref->next; | |
917 | ||
918 | ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads); | |
919 | to_fetch[nr_heads++] = ref; | |
920 | } | |
921 | else | |
922 | die("http transport does not support %s", buf->buf); | |
923 | ||
924 | strbuf_reset(buf); | |
925 | if (strbuf_getline_lf(buf, stdin) == EOF) | |
926 | return; | |
927 | if (!*buf->buf) | |
928 | break; | |
929 | } while (1); | |
930 | ||
931 | if (fetch(nr_heads, to_fetch)) | |
932 | exit(128); /* error already reported */ | |
933 | free_refs(list_head); | |
934 | free(to_fetch); | |
935 | ||
936 | printf("\n"); | |
937 | fflush(stdout); | |
938 | strbuf_reset(buf); | |
939 | } | |
940 | ||
941 | static int push_dav(int nr_spec, char **specs) | |
942 | { | |
943 | struct child_process child = CHILD_PROCESS_INIT; | |
944 | size_t i; | |
945 | ||
946 | child.git_cmd = 1; | |
947 | argv_array_push(&child.args, "http-push"); | |
948 | argv_array_push(&child.args, "--helper-status"); | |
949 | if (options.dry_run) | |
950 | argv_array_push(&child.args, "--dry-run"); | |
951 | if (options.verbosity > 1) | |
952 | argv_array_push(&child.args, "--verbose"); | |
953 | argv_array_push(&child.args, url.buf); | |
954 | for (i = 0; i < nr_spec; i++) | |
955 | argv_array_push(&child.args, specs[i]); | |
956 | ||
957 | if (run_command(&child)) | |
958 | die("git-http-push failed"); | |
959 | return 0; | |
960 | } | |
961 | ||
962 | static int push_git(struct discovery *heads, int nr_spec, char **specs) | |
963 | { | |
964 | struct rpc_state rpc; | |
965 | int i, err; | |
966 | struct argv_array args; | |
967 | struct string_list_item *cas_option; | |
968 | struct strbuf preamble = STRBUF_INIT; | |
969 | ||
970 | argv_array_init(&args); | |
971 | argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status", | |
972 | NULL); | |
973 | ||
974 | if (options.thin) | |
975 | argv_array_push(&args, "--thin"); | |
976 | if (options.dry_run) | |
977 | argv_array_push(&args, "--dry-run"); | |
978 | if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS) | |
979 | argv_array_push(&args, "--signed=yes"); | |
980 | else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED) | |
981 | argv_array_push(&args, "--signed=if-asked"); | |
982 | if (options.verbosity == 0) | |
983 | argv_array_push(&args, "--quiet"); | |
984 | else if (options.verbosity > 1) | |
985 | argv_array_push(&args, "--verbose"); | |
986 | for (i = 0; i < options.push_options.nr; i++) | |
987 | argv_array_pushf(&args, "--push-option=%s", | |
988 | options.push_options.items[i].string); | |
989 | argv_array_push(&args, options.progress ? "--progress" : "--no-progress"); | |
990 | for_each_string_list_item(cas_option, &cas_options) | |
991 | argv_array_push(&args, cas_option->string); | |
992 | argv_array_push(&args, url.buf); | |
993 | ||
994 | argv_array_push(&args, "--stdin"); | |
995 | for (i = 0; i < nr_spec; i++) | |
996 | packet_buf_write(&preamble, "%s\n", specs[i]); | |
997 | packet_buf_flush(&preamble); | |
998 | ||
999 | memset(&rpc, 0, sizeof(rpc)); | |
1000 | rpc.service_name = "git-receive-pack", | |
1001 | rpc.argv = args.argv; | |
1002 | rpc.stdin_preamble = &preamble; | |
1003 | ||
1004 | err = rpc_service(&rpc, heads); | |
1005 | if (rpc.result.len) | |
1006 | write_or_die(1, rpc.result.buf, rpc.result.len); | |
1007 | strbuf_release(&rpc.result); | |
1008 | strbuf_release(&preamble); | |
1009 | argv_array_clear(&args); | |
1010 | return err; | |
1011 | } | |
1012 | ||
1013 | static int push(int nr_spec, char **specs) | |
1014 | { | |
1015 | struct discovery *heads = discover_refs("git-receive-pack", 1); | |
1016 | int ret; | |
1017 | ||
1018 | if (heads->proto_git) | |
1019 | ret = push_git(heads, nr_spec, specs); | |
1020 | else | |
1021 | ret = push_dav(nr_spec, specs); | |
1022 | free_discovery(heads); | |
1023 | return ret; | |
1024 | } | |
1025 | ||
1026 | static void parse_push(struct strbuf *buf) | |
1027 | { | |
1028 | char **specs = NULL; | |
1029 | int alloc_spec = 0, nr_spec = 0, i, ret; | |
1030 | ||
1031 | do { | |
1032 | if (starts_with(buf->buf, "push ")) { | |
1033 | ALLOC_GROW(specs, nr_spec + 1, alloc_spec); | |
1034 | specs[nr_spec++] = xstrdup(buf->buf + 5); | |
1035 | } | |
1036 | else | |
1037 | die("http transport does not support %s", buf->buf); | |
1038 | ||
1039 | strbuf_reset(buf); | |
1040 | if (strbuf_getline_lf(buf, stdin) == EOF) | |
1041 | goto free_specs; | |
1042 | if (!*buf->buf) | |
1043 | break; | |
1044 | } while (1); | |
1045 | ||
1046 | ret = push(nr_spec, specs); | |
1047 | printf("\n"); | |
1048 | fflush(stdout); | |
1049 | ||
1050 | if (ret) | |
1051 | exit(128); /* error already reported */ | |
1052 | ||
1053 | free_specs: | |
1054 | for (i = 0; i < nr_spec; i++) | |
1055 | free(specs[i]); | |
1056 | free(specs); | |
1057 | } | |
1058 | ||
1059 | int cmd_main(int argc, const char **argv) | |
1060 | { | |
1061 | struct strbuf buf = STRBUF_INIT; | |
1062 | int nongit; | |
1063 | ||
1064 | setup_git_directory_gently(&nongit); | |
1065 | if (argc < 2) { | |
1066 | error("remote-curl: usage: git remote-curl <remote> [<url>]"); | |
1067 | return 1; | |
1068 | } | |
1069 | ||
1070 | options.verbosity = 1; | |
1071 | options.progress = !!isatty(2); | |
1072 | options.thin = 1; | |
1073 | string_list_init(&options.deepen_not, 1); | |
1074 | string_list_init(&options.push_options, 1); | |
1075 | ||
1076 | remote = remote_get(argv[1]); | |
1077 | ||
1078 | if (argc > 2) { | |
1079 | end_url_with_slash(&url, argv[2]); | |
1080 | } else { | |
1081 | end_url_with_slash(&url, remote->url[0]); | |
1082 | } | |
1083 | ||
1084 | http_init(remote, url.buf, 0); | |
1085 | ||
1086 | do { | |
1087 | const char *arg; | |
1088 | ||
1089 | if (strbuf_getline_lf(&buf, stdin) == EOF) { | |
1090 | if (ferror(stdin)) | |
1091 | error("remote-curl: error reading command stream from git"); | |
1092 | return 1; | |
1093 | } | |
1094 | if (buf.len == 0) | |
1095 | break; | |
1096 | if (starts_with(buf.buf, "fetch ")) { | |
1097 | if (nongit) | |
1098 | die("remote-curl: fetch attempted without a local repo"); | |
1099 | parse_fetch(&buf); | |
1100 | ||
1101 | } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) { | |
1102 | int for_push = !!strstr(buf.buf + 4, "for-push"); | |
1103 | output_refs(get_refs(for_push)); | |
1104 | ||
1105 | } else if (starts_with(buf.buf, "push ")) { | |
1106 | parse_push(&buf); | |
1107 | ||
1108 | } else if (skip_prefix(buf.buf, "option ", &arg)) { | |
1109 | char *value = strchr(arg, ' '); | |
1110 | int result; | |
1111 | ||
1112 | if (value) | |
1113 | *value++ = '\0'; | |
1114 | else | |
1115 | value = "true"; | |
1116 | ||
1117 | result = set_option(arg, value); | |
1118 | if (!result) | |
1119 | printf("ok\n"); | |
1120 | else if (result < 0) | |
1121 | printf("error invalid value\n"); | |
1122 | else | |
1123 | printf("unsupported\n"); | |
1124 | fflush(stdout); | |
1125 | ||
1126 | } else if (!strcmp(buf.buf, "capabilities")) { | |
1127 | printf("fetch\n"); | |
1128 | printf("option\n"); | |
1129 | printf("push\n"); | |
1130 | printf("check-connectivity\n"); | |
1131 | printf("\n"); | |
1132 | fflush(stdout); | |
1133 | } else { | |
1134 | error("remote-curl: unknown command '%s' from git", buf.buf); | |
1135 | return 1; | |
1136 | } | |
1137 | strbuf_reset(&buf); | |
1138 | } while (1); | |
1139 | ||
1140 | http_cleanup(); | |
1141 | ||
1142 | return 0; | |
1143 | } |