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pkt-line: define PACKET_READ_RESPONSE_END
[thirdparty/git.git] / transport.c
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CommitLineData
1#include "cache.h"
2#include "config.h"
3#include "transport.h"
4#include "run-command.h"
5#include "pkt-line.h"
6#include "fetch-pack.h"
7#include "remote.h"
8#include "connect.h"
9#include "send-pack.h"
10#include "walker.h"
11#include "bundle.h"
12#include "dir.h"
13#include "refs.h"
14#include "refspec.h"
15#include "branch.h"
16#include "url.h"
17#include "submodule.h"
18#include "string-list.h"
19#include "oid-array.h"
20#include "sigchain.h"
21#include "transport-internal.h"
22#include "protocol.h"
23#include "object-store.h"
24#include "color.h"
25
26static int transport_use_color = -1;
27static char transport_colors[][COLOR_MAXLEN] = {
28 GIT_COLOR_RESET,
29 GIT_COLOR_RED /* REJECTED */
30};
31
32enum color_transport {
33 TRANSPORT_COLOR_RESET = 0,
34 TRANSPORT_COLOR_REJECTED = 1
35};
36
37static int transport_color_config(void)
38{
39 const char *keys[] = {
40 "color.transport.reset",
41 "color.transport.rejected"
42 }, *key = "color.transport";
43 char *value;
44 int i;
45 static int initialized;
46
47 if (initialized)
48 return 0;
49 initialized = 1;
50
51 if (!git_config_get_string(key, &value))
52 transport_use_color = git_config_colorbool(key, value);
53
54 if (!want_color_stderr(transport_use_color))
55 return 0;
56
57 for (i = 0; i < ARRAY_SIZE(keys); i++)
58 if (!git_config_get_string(keys[i], &value)) {
59 if (!value)
60 return config_error_nonbool(keys[i]);
61 if (color_parse(value, transport_colors[i]) < 0)
62 return -1;
63 }
64
65 return 0;
66}
67
68static const char *transport_get_color(enum color_transport ix)
69{
70 if (want_color_stderr(transport_use_color))
71 return transport_colors[ix];
72 return "";
73}
74
75static void set_upstreams(struct transport *transport, struct ref *refs,
76 int pretend)
77{
78 struct ref *ref;
79 for (ref = refs; ref; ref = ref->next) {
80 const char *localname;
81 const char *tmp;
82 const char *remotename;
83 int flag = 0;
84 /*
85 * Check suitability for tracking. Must be successful /
86 * already up-to-date ref create/modify (not delete).
87 */
88 if (ref->status != REF_STATUS_OK &&
89 ref->status != REF_STATUS_UPTODATE)
90 continue;
91 if (!ref->peer_ref)
92 continue;
93 if (is_null_oid(&ref->new_oid))
94 continue;
95
96 /* Follow symbolic refs (mainly for HEAD). */
97 localname = ref->peer_ref->name;
98 remotename = ref->name;
99 tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
100 NULL, &flag);
101 if (tmp && flag & REF_ISSYMREF &&
102 starts_with(tmp, "refs/heads/"))
103 localname = tmp;
104
105 /* Both source and destination must be local branches. */
106 if (!localname || !starts_with(localname, "refs/heads/"))
107 continue;
108 if (!remotename || !starts_with(remotename, "refs/heads/"))
109 continue;
110
111 if (!pretend)
112 install_branch_config(BRANCH_CONFIG_VERBOSE,
113 localname + 11, transport->remote->name,
114 remotename);
115 else
116 printf(_("Would set upstream of '%s' to '%s' of '%s'\n"),
117 localname + 11, remotename + 11,
118 transport->remote->name);
119 }
120}
121
122struct bundle_transport_data {
123 int fd;
124 struct bundle_header header;
125 unsigned get_refs_from_bundle_called : 1;
126};
127
128static struct ref *get_refs_from_bundle(struct transport *transport,
129 int for_push,
130 const struct argv_array *ref_prefixes)
131{
132 struct bundle_transport_data *data = transport->data;
133 struct ref *result = NULL;
134 int i;
135
136 if (for_push)
137 return NULL;
138
139 data->get_refs_from_bundle_called = 1;
140
141 if (data->fd > 0)
142 close(data->fd);
143 data->fd = read_bundle_header(transport->url, &data->header);
144 if (data->fd < 0)
145 die(_("could not read bundle '%s'"), transport->url);
146 for (i = 0; i < data->header.references.nr; i++) {
147 struct ref_list_entry *e = data->header.references.list + i;
148 struct ref *ref = alloc_ref(e->name);
149 oidcpy(&ref->old_oid, &e->oid);
150 ref->next = result;
151 result = ref;
152 }
153 return result;
154}
155
156static int fetch_refs_from_bundle(struct transport *transport,
157 int nr_heads, struct ref **to_fetch)
158{
159 struct bundle_transport_data *data = transport->data;
160
161 if (!data->get_refs_from_bundle_called)
162 get_refs_from_bundle(transport, 0, NULL);
163 return unbundle(the_repository, &data->header, data->fd,
164 transport->progress ? BUNDLE_VERBOSE : 0);
165}
166
167static int close_bundle(struct transport *transport)
168{
169 struct bundle_transport_data *data = transport->data;
170 if (data->fd > 0)
171 close(data->fd);
172 free(data);
173 return 0;
174}
175
176struct git_transport_data {
177 struct git_transport_options options;
178 struct child_process *conn;
179 int fd[2];
180 unsigned got_remote_heads : 1;
181 enum protocol_version version;
182 struct oid_array extra_have;
183 struct oid_array shallow;
184};
185
186static int set_git_option(struct git_transport_options *opts,
187 const char *name, const char *value)
188{
189 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
190 opts->uploadpack = value;
191 return 0;
192 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
193 opts->receivepack = value;
194 return 0;
195 } else if (!strcmp(name, TRANS_OPT_THIN)) {
196 opts->thin = !!value;
197 return 0;
198 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
199 opts->followtags = !!value;
200 return 0;
201 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
202 opts->keep = !!value;
203 return 0;
204 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
205 opts->update_shallow = !!value;
206 return 0;
207 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
208 if (!value)
209 opts->depth = 0;
210 else {
211 char *end;
212 opts->depth = strtol(value, &end, 0);
213 if (*end)
214 die(_("transport: invalid depth option '%s'"), value);
215 }
216 return 0;
217 } else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
218 opts->deepen_since = value;
219 return 0;
220 } else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
221 opts->deepen_not = (const struct string_list *)value;
222 return 0;
223 } else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
224 opts->deepen_relative = !!value;
225 return 0;
226 } else if (!strcmp(name, TRANS_OPT_FROM_PROMISOR)) {
227 opts->from_promisor = !!value;
228 return 0;
229 } else if (!strcmp(name, TRANS_OPT_NO_DEPENDENTS)) {
230 opts->no_dependents = !!value;
231 return 0;
232 } else if (!strcmp(name, TRANS_OPT_LIST_OBJECTS_FILTER)) {
233 list_objects_filter_die_if_populated(&opts->filter_options);
234 parse_list_objects_filter(&opts->filter_options, value);
235 return 0;
236 }
237 return 1;
238}
239
240static int connect_setup(struct transport *transport, int for_push)
241{
242 struct git_transport_data *data = transport->data;
243 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
244
245 if (data->conn)
246 return 0;
247
248 switch (transport->family) {
249 case TRANSPORT_FAMILY_ALL: break;
250 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
251 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
252 }
253
254 data->conn = git_connect(data->fd, transport->url,
255 for_push ? data->options.receivepack :
256 data->options.uploadpack,
257 flags);
258
259 return 0;
260}
261
262static void die_if_server_options(struct transport *transport)
263{
264 if (!transport->server_options || !transport->server_options->nr)
265 return;
266 advise(_("see protocol.version in 'git help config' for more details"));
267 die(_("server options require protocol version 2 or later"));
268}
269
270/*
271 * Obtains the protocol version from the transport and writes it to
272 * transport->data->version, first connecting if not already connected.
273 *
274 * If the protocol version is one that allows skipping the listing of remote
275 * refs, and must_list_refs is 0, the listing of remote refs is skipped and
276 * this function returns NULL. Otherwise, this function returns the list of
277 * remote refs.
278 */
279static struct ref *handshake(struct transport *transport, int for_push,
280 const struct argv_array *ref_prefixes,
281 int must_list_refs)
282{
283 struct git_transport_data *data = transport->data;
284 struct ref *refs = NULL;
285 struct packet_reader reader;
286
287 connect_setup(transport, for_push);
288
289 packet_reader_init(&reader, data->fd[0], NULL, 0,
290 PACKET_READ_CHOMP_NEWLINE |
291 PACKET_READ_GENTLE_ON_EOF |
292 PACKET_READ_DIE_ON_ERR_PACKET);
293
294 data->version = discover_version(&reader);
295 switch (data->version) {
296 case protocol_v2:
297 if (must_list_refs)
298 get_remote_refs(data->fd[1], &reader, &refs, for_push,
299 ref_prefixes,
300 transport->server_options);
301 break;
302 case protocol_v1:
303 case protocol_v0:
304 die_if_server_options(transport);
305 get_remote_heads(&reader, &refs,
306 for_push ? REF_NORMAL : 0,
307 &data->extra_have,
308 &data->shallow);
309 break;
310 case protocol_unknown_version:
311 BUG("unknown protocol version");
312 }
313 data->got_remote_heads = 1;
314
315 if (reader.line_peeked)
316 BUG("buffer must be empty at the end of handshake()");
317
318 return refs;
319}
320
321static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
322 const struct argv_array *ref_prefixes)
323{
324 return handshake(transport, for_push, ref_prefixes, 1);
325}
326
327static int fetch_refs_via_pack(struct transport *transport,
328 int nr_heads, struct ref **to_fetch)
329{
330 int ret = 0;
331 struct git_transport_data *data = transport->data;
332 struct ref *refs = NULL;
333 struct fetch_pack_args args;
334 struct ref *refs_tmp = NULL;
335
336 memset(&args, 0, sizeof(args));
337 args.uploadpack = data->options.uploadpack;
338 args.keep_pack = data->options.keep;
339 args.lock_pack = 1;
340 args.use_thin_pack = data->options.thin;
341 args.include_tag = data->options.followtags;
342 args.verbose = (transport->verbose > 1);
343 args.quiet = (transport->verbose < 0);
344 args.no_progress = !transport->progress;
345 args.depth = data->options.depth;
346 args.deepen_since = data->options.deepen_since;
347 args.deepen_not = data->options.deepen_not;
348 args.deepen_relative = data->options.deepen_relative;
349 args.check_self_contained_and_connected =
350 data->options.check_self_contained_and_connected;
351 args.cloning = transport->cloning;
352 args.update_shallow = data->options.update_shallow;
353 args.from_promisor = data->options.from_promisor;
354 args.no_dependents = data->options.no_dependents;
355 args.filter_options = data->options.filter_options;
356 args.stateless_rpc = transport->stateless_rpc;
357 args.server_options = transport->server_options;
358 args.negotiation_tips = data->options.negotiation_tips;
359
360 if (!data->got_remote_heads) {
361 int i;
362 int must_list_refs = 0;
363 for (i = 0; i < nr_heads; i++) {
364 if (!to_fetch[i]->exact_oid) {
365 must_list_refs = 1;
366 break;
367 }
368 }
369 refs_tmp = handshake(transport, 0, NULL, must_list_refs);
370 }
371
372 if (data->version == protocol_unknown_version)
373 BUG("unknown protocol version");
374 else if (data->version <= protocol_v1)
375 die_if_server_options(transport);
376
377 refs = fetch_pack(&args, data->fd,
378 refs_tmp ? refs_tmp : transport->remote_refs,
379 to_fetch, nr_heads, &data->shallow,
380 &transport->pack_lockfile, data->version);
381
382 close(data->fd[0]);
383 close(data->fd[1]);
384 if (finish_connect(data->conn))
385 ret = -1;
386 data->conn = NULL;
387 data->got_remote_heads = 0;
388 data->options.self_contained_and_connected =
389 args.self_contained_and_connected;
390 data->options.connectivity_checked = args.connectivity_checked;
391
392 if (refs == NULL)
393 ret = -1;
394 if (report_unmatched_refs(to_fetch, nr_heads))
395 ret = -1;
396
397 free_refs(refs_tmp);
398 free_refs(refs);
399 return ret;
400}
401
402static int push_had_errors(struct ref *ref)
403{
404 for (; ref; ref = ref->next) {
405 switch (ref->status) {
406 case REF_STATUS_NONE:
407 case REF_STATUS_UPTODATE:
408 case REF_STATUS_OK:
409 break;
410 default:
411 return 1;
412 }
413 }
414 return 0;
415}
416
417int transport_refs_pushed(struct ref *ref)
418{
419 for (; ref; ref = ref->next) {
420 switch(ref->status) {
421 case REF_STATUS_NONE:
422 case REF_STATUS_UPTODATE:
423 break;
424 default:
425 return 1;
426 }
427 }
428 return 0;
429}
430
431void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
432{
433 struct refspec_item rs;
434
435 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
436 return;
437
438 rs.src = ref->name;
439 rs.dst = NULL;
440
441 if (!remote_find_tracking(remote, &rs)) {
442 if (verbose)
443 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
444 if (ref->deletion) {
445 delete_ref(NULL, rs.dst, NULL, 0);
446 } else
447 update_ref("update by push", rs.dst, &ref->new_oid,
448 NULL, 0, 0);
449 free(rs.dst);
450 }
451}
452
453static void print_ref_status(char flag, const char *summary,
454 struct ref *to, struct ref *from, const char *msg,
455 int porcelain, int summary_width)
456{
457 if (porcelain) {
458 if (from)
459 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
460 else
461 fprintf(stdout, "%c\t:%s\t", flag, to->name);
462 if (msg)
463 fprintf(stdout, "%s (%s)\n", summary, msg);
464 else
465 fprintf(stdout, "%s\n", summary);
466 } else {
467 const char *red = "", *reset = "";
468 if (push_had_errors(to)) {
469 red = transport_get_color(TRANSPORT_COLOR_REJECTED);
470 reset = transport_get_color(TRANSPORT_COLOR_RESET);
471 }
472 fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
473 summary, reset);
474 if (from)
475 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
476 else
477 fputs(prettify_refname(to->name), stderr);
478 if (msg) {
479 fputs(" (", stderr);
480 fputs(msg, stderr);
481 fputc(')', stderr);
482 }
483 fputc('\n', stderr);
484 }
485}
486
487static void print_ok_ref_status(struct ref *ref, int porcelain, int summary_width)
488{
489 if (ref->deletion)
490 print_ref_status('-', "[deleted]", ref, NULL, NULL,
491 porcelain, summary_width);
492 else if (is_null_oid(&ref->old_oid))
493 print_ref_status('*',
494 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
495 "[new branch]"),
496 ref, ref->peer_ref, NULL, porcelain, summary_width);
497 else {
498 struct strbuf quickref = STRBUF_INIT;
499 char type;
500 const char *msg;
501
502 strbuf_add_unique_abbrev(&quickref, &ref->old_oid,
503 DEFAULT_ABBREV);
504 if (ref->forced_update) {
505 strbuf_addstr(&quickref, "...");
506 type = '+';
507 msg = "forced update";
508 } else {
509 strbuf_addstr(&quickref, "..");
510 type = ' ';
511 msg = NULL;
512 }
513 strbuf_add_unique_abbrev(&quickref, &ref->new_oid,
514 DEFAULT_ABBREV);
515
516 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
517 porcelain, summary_width);
518 strbuf_release(&quickref);
519 }
520}
521
522static int print_one_push_status(struct ref *ref, const char *dest, int count,
523 int porcelain, int summary_width)
524{
525 if (!count) {
526 char *url = transport_anonymize_url(dest);
527 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
528 free(url);
529 }
530
531 switch(ref->status) {
532 case REF_STATUS_NONE:
533 print_ref_status('X', "[no match]", ref, NULL, NULL,
534 porcelain, summary_width);
535 break;
536 case REF_STATUS_REJECT_NODELETE:
537 print_ref_status('!', "[rejected]", ref, NULL,
538 "remote does not support deleting refs",
539 porcelain, summary_width);
540 break;
541 case REF_STATUS_UPTODATE:
542 print_ref_status('=', "[up to date]", ref,
543 ref->peer_ref, NULL, porcelain, summary_width);
544 break;
545 case REF_STATUS_REJECT_NONFASTFORWARD:
546 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
547 "non-fast-forward", porcelain, summary_width);
548 break;
549 case REF_STATUS_REJECT_ALREADY_EXISTS:
550 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
551 "already exists", porcelain, summary_width);
552 break;
553 case REF_STATUS_REJECT_FETCH_FIRST:
554 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
555 "fetch first", porcelain, summary_width);
556 break;
557 case REF_STATUS_REJECT_NEEDS_FORCE:
558 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
559 "needs force", porcelain, summary_width);
560 break;
561 case REF_STATUS_REJECT_STALE:
562 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
563 "stale info", porcelain, summary_width);
564 break;
565 case REF_STATUS_REJECT_SHALLOW:
566 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
567 "new shallow roots not allowed",
568 porcelain, summary_width);
569 break;
570 case REF_STATUS_REMOTE_REJECT:
571 print_ref_status('!', "[remote rejected]", ref,
572 ref->deletion ? NULL : ref->peer_ref,
573 ref->remote_status, porcelain, summary_width);
574 break;
575 case REF_STATUS_EXPECTING_REPORT:
576 print_ref_status('!', "[remote failure]", ref,
577 ref->deletion ? NULL : ref->peer_ref,
578 "remote failed to report status",
579 porcelain, summary_width);
580 break;
581 case REF_STATUS_ATOMIC_PUSH_FAILED:
582 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
583 "atomic push failed", porcelain, summary_width);
584 break;
585 case REF_STATUS_OK:
586 print_ok_ref_status(ref, porcelain, summary_width);
587 break;
588 }
589
590 return 1;
591}
592
593static int measure_abbrev(const struct object_id *oid, int sofar)
594{
595 char hex[GIT_MAX_HEXSZ + 1];
596 int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
597
598 return (w < sofar) ? sofar : w;
599}
600
601int transport_summary_width(const struct ref *refs)
602{
603 int maxw = -1;
604
605 for (; refs; refs = refs->next) {
606 maxw = measure_abbrev(&refs->old_oid, maxw);
607 maxw = measure_abbrev(&refs->new_oid, maxw);
608 }
609 if (maxw < 0)
610 maxw = FALLBACK_DEFAULT_ABBREV;
611 return (2 * maxw + 3);
612}
613
614void transport_print_push_status(const char *dest, struct ref *refs,
615 int verbose, int porcelain, unsigned int *reject_reasons)
616{
617 struct ref *ref;
618 int n = 0;
619 char *head;
620 int summary_width = transport_summary_width(refs);
621
622 if (transport_color_config() < 0)
623 warning(_("could not parse transport.color.* config"));
624
625 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
626
627 if (verbose) {
628 for (ref = refs; ref; ref = ref->next)
629 if (ref->status == REF_STATUS_UPTODATE)
630 n += print_one_push_status(ref, dest, n,
631 porcelain, summary_width);
632 }
633
634 for (ref = refs; ref; ref = ref->next)
635 if (ref->status == REF_STATUS_OK)
636 n += print_one_push_status(ref, dest, n,
637 porcelain, summary_width);
638
639 *reject_reasons = 0;
640 for (ref = refs; ref; ref = ref->next) {
641 if (ref->status != REF_STATUS_NONE &&
642 ref->status != REF_STATUS_UPTODATE &&
643 ref->status != REF_STATUS_OK)
644 n += print_one_push_status(ref, dest, n,
645 porcelain, summary_width);
646 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
647 if (head != NULL && !strcmp(head, ref->name))
648 *reject_reasons |= REJECT_NON_FF_HEAD;
649 else
650 *reject_reasons |= REJECT_NON_FF_OTHER;
651 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
652 *reject_reasons |= REJECT_ALREADY_EXISTS;
653 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
654 *reject_reasons |= REJECT_FETCH_FIRST;
655 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
656 *reject_reasons |= REJECT_NEEDS_FORCE;
657 }
658 }
659 free(head);
660}
661
662static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
663{
664 struct git_transport_data *data = transport->data;
665 struct send_pack_args args;
666 int ret = 0;
667
668 if (transport_color_config() < 0)
669 return -1;
670
671 if (!data->got_remote_heads)
672 get_refs_via_connect(transport, 1, NULL);
673
674 memset(&args, 0, sizeof(args));
675 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
676 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
677 args.use_thin_pack = data->options.thin;
678 args.verbose = (transport->verbose > 0);
679 args.quiet = (transport->verbose < 0);
680 args.progress = transport->progress;
681 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
682 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
683 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
684 args.push_options = transport->push_options;
685 args.url = transport->url;
686
687 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
688 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
689 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
690 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
691 else
692 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
693
694 switch (data->version) {
695 case protocol_v2:
696 die(_("support for protocol v2 not implemented yet"));
697 break;
698 case protocol_v1:
699 case protocol_v0:
700 ret = send_pack(&args, data->fd, data->conn, remote_refs,
701 &data->extra_have);
702 break;
703 case protocol_unknown_version:
704 BUG("unknown protocol version");
705 }
706
707 close(data->fd[1]);
708 close(data->fd[0]);
709 /*
710 * Atomic push may abort the connection early and close the pipe,
711 * which may cause an error for `finish_connect()`. Ignore this error
712 * for atomic git-push.
713 */
714 if (ret || args.atomic)
715 finish_connect(data->conn);
716 else
717 ret = finish_connect(data->conn);
718 data->conn = NULL;
719 data->got_remote_heads = 0;
720
721 return ret;
722}
723
724static int connect_git(struct transport *transport, const char *name,
725 const char *executable, int fd[2])
726{
727 struct git_transport_data *data = transport->data;
728 data->conn = git_connect(data->fd, transport->url,
729 executable, 0);
730 fd[0] = data->fd[0];
731 fd[1] = data->fd[1];
732 return 0;
733}
734
735static int disconnect_git(struct transport *transport)
736{
737 struct git_transport_data *data = transport->data;
738 if (data->conn) {
739 if (data->got_remote_heads && !transport->stateless_rpc)
740 packet_flush(data->fd[1]);
741 close(data->fd[0]);
742 close(data->fd[1]);
743 finish_connect(data->conn);
744 }
745
746 free(data);
747 return 0;
748}
749
750static struct transport_vtable taken_over_vtable = {
751 NULL,
752 get_refs_via_connect,
753 fetch_refs_via_pack,
754 git_transport_push,
755 NULL,
756 disconnect_git
757};
758
759void transport_take_over(struct transport *transport,
760 struct child_process *child)
761{
762 struct git_transport_data *data;
763
764 if (!transport->smart_options)
765 BUG("taking over transport requires non-NULL "
766 "smart_options field.");
767
768 data = xcalloc(1, sizeof(*data));
769 data->options = *transport->smart_options;
770 data->conn = child;
771 data->fd[0] = data->conn->out;
772 data->fd[1] = data->conn->in;
773 data->got_remote_heads = 0;
774 transport->data = data;
775
776 transport->vtable = &taken_over_vtable;
777 transport->smart_options = &(data->options);
778
779 transport->cannot_reuse = 1;
780}
781
782static int is_file(const char *url)
783{
784 struct stat buf;
785 if (stat(url, &buf))
786 return 0;
787 return S_ISREG(buf.st_mode);
788}
789
790static int external_specification_len(const char *url)
791{
792 return strchr(url, ':') - url;
793}
794
795static const struct string_list *protocol_whitelist(void)
796{
797 static int enabled = -1;
798 static struct string_list allowed = STRING_LIST_INIT_DUP;
799
800 if (enabled < 0) {
801 const char *v = getenv("GIT_ALLOW_PROTOCOL");
802 if (v) {
803 string_list_split(&allowed, v, ':', -1);
804 string_list_sort(&allowed);
805 enabled = 1;
806 } else {
807 enabled = 0;
808 }
809 }
810
811 return enabled ? &allowed : NULL;
812}
813
814enum protocol_allow_config {
815 PROTOCOL_ALLOW_NEVER = 0,
816 PROTOCOL_ALLOW_USER_ONLY,
817 PROTOCOL_ALLOW_ALWAYS
818};
819
820static enum protocol_allow_config parse_protocol_config(const char *key,
821 const char *value)
822{
823 if (!strcasecmp(value, "always"))
824 return PROTOCOL_ALLOW_ALWAYS;
825 else if (!strcasecmp(value, "never"))
826 return PROTOCOL_ALLOW_NEVER;
827 else if (!strcasecmp(value, "user"))
828 return PROTOCOL_ALLOW_USER_ONLY;
829
830 die(_("unknown value for config '%s': %s"), key, value);
831}
832
833static enum protocol_allow_config get_protocol_config(const char *type)
834{
835 char *key = xstrfmt("protocol.%s.allow", type);
836 char *value;
837
838 /* first check the per-protocol config */
839 if (!git_config_get_string(key, &value)) {
840 enum protocol_allow_config ret =
841 parse_protocol_config(key, value);
842 free(key);
843 free(value);
844 return ret;
845 }
846 free(key);
847
848 /* if defined, fallback to user-defined default for unknown protocols */
849 if (!git_config_get_string("protocol.allow", &value)) {
850 enum protocol_allow_config ret =
851 parse_protocol_config("protocol.allow", value);
852 free(value);
853 return ret;
854 }
855
856 /* fallback to built-in defaults */
857 /* known safe */
858 if (!strcmp(type, "http") ||
859 !strcmp(type, "https") ||
860 !strcmp(type, "git") ||
861 !strcmp(type, "ssh") ||
862 !strcmp(type, "file"))
863 return PROTOCOL_ALLOW_ALWAYS;
864
865 /* known scary; err on the side of caution */
866 if (!strcmp(type, "ext"))
867 return PROTOCOL_ALLOW_NEVER;
868
869 /* unknown; by default let them be used only directly by the user */
870 return PROTOCOL_ALLOW_USER_ONLY;
871}
872
873int is_transport_allowed(const char *type, int from_user)
874{
875 const struct string_list *whitelist = protocol_whitelist();
876 if (whitelist)
877 return string_list_has_string(whitelist, type);
878
879 switch (get_protocol_config(type)) {
880 case PROTOCOL_ALLOW_ALWAYS:
881 return 1;
882 case PROTOCOL_ALLOW_NEVER:
883 return 0;
884 case PROTOCOL_ALLOW_USER_ONLY:
885 if (from_user < 0)
886 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
887 return from_user;
888 }
889
890 BUG("invalid protocol_allow_config type");
891}
892
893void transport_check_allowed(const char *type)
894{
895 if (!is_transport_allowed(type, -1))
896 die(_("transport '%s' not allowed"), type);
897}
898
899static struct transport_vtable bundle_vtable = {
900 NULL,
901 get_refs_from_bundle,
902 fetch_refs_from_bundle,
903 NULL,
904 NULL,
905 close_bundle
906};
907
908static struct transport_vtable builtin_smart_vtable = {
909 NULL,
910 get_refs_via_connect,
911 fetch_refs_via_pack,
912 git_transport_push,
913 connect_git,
914 disconnect_git
915};
916
917struct transport *transport_get(struct remote *remote, const char *url)
918{
919 const char *helper;
920 struct transport *ret = xcalloc(1, sizeof(*ret));
921
922 ret->progress = isatty(2);
923
924 if (!remote)
925 BUG("No remote provided to transport_get()");
926
927 ret->got_remote_refs = 0;
928 ret->remote = remote;
929 helper = remote->foreign_vcs;
930
931 if (!url && remote->url)
932 url = remote->url[0];
933 ret->url = url;
934
935 /* maybe it is a foreign URL? */
936 if (url) {
937 const char *p = url;
938
939 while (is_urlschemechar(p == url, *p))
940 p++;
941 if (starts_with(p, "::"))
942 helper = xstrndup(url, p - url);
943 }
944
945 if (helper) {
946 transport_helper_init(ret, helper);
947 } else if (starts_with(url, "rsync:")) {
948 die(_("git-over-rsync is no longer supported"));
949 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
950 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
951 transport_check_allowed("file");
952 ret->data = data;
953 ret->vtable = &bundle_vtable;
954 ret->smart_options = NULL;
955 } else if (!is_url(url)
956 || starts_with(url, "file://")
957 || starts_with(url, "git://")
958 || starts_with(url, "ssh://")
959 || starts_with(url, "git+ssh://") /* deprecated - do not use */
960 || starts_with(url, "ssh+git://") /* deprecated - do not use */
961 ) {
962 /*
963 * These are builtin smart transports; "allowed" transports
964 * will be checked individually in git_connect.
965 */
966 struct git_transport_data *data = xcalloc(1, sizeof(*data));
967 ret->data = data;
968 ret->vtable = &builtin_smart_vtable;
969 ret->smart_options = &(data->options);
970
971 data->conn = NULL;
972 data->got_remote_heads = 0;
973 } else {
974 /* Unknown protocol in URL. Pass to external handler. */
975 int len = external_specification_len(url);
976 char *handler = xmemdupz(url, len);
977 transport_helper_init(ret, handler);
978 }
979
980 if (ret->smart_options) {
981 ret->smart_options->thin = 1;
982 ret->smart_options->uploadpack = "git-upload-pack";
983 if (remote->uploadpack)
984 ret->smart_options->uploadpack = remote->uploadpack;
985 ret->smart_options->receivepack = "git-receive-pack";
986 if (remote->receivepack)
987 ret->smart_options->receivepack = remote->receivepack;
988 }
989
990 return ret;
991}
992
993int transport_set_option(struct transport *transport,
994 const char *name, const char *value)
995{
996 int git_reports = 1, protocol_reports = 1;
997
998 if (transport->smart_options)
999 git_reports = set_git_option(transport->smart_options,
1000 name, value);
1001
1002 if (transport->vtable->set_option)
1003 protocol_reports = transport->vtable->set_option(transport,
1004 name, value);
1005
1006 /* If either report is 0, report 0 (success). */
1007 if (!git_reports || !protocol_reports)
1008 return 0;
1009 /* If either reports -1 (invalid value), report -1. */
1010 if ((git_reports == -1) || (protocol_reports == -1))
1011 return -1;
1012 /* Otherwise if both report unknown, report unknown. */
1013 return 1;
1014}
1015
1016void transport_set_verbosity(struct transport *transport, int verbosity,
1017 int force_progress)
1018{
1019 if (verbosity >= 1)
1020 transport->verbose = verbosity <= 3 ? verbosity : 3;
1021 if (verbosity < 0)
1022 transport->verbose = -1;
1023
1024 /**
1025 * Rules used to determine whether to report progress (processing aborts
1026 * when a rule is satisfied):
1027 *
1028 * . Report progress, if force_progress is 1 (ie. --progress).
1029 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1030 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1031 * . Report progress if isatty(2) is 1.
1032 **/
1033 if (force_progress >= 0)
1034 transport->progress = !!force_progress;
1035 else
1036 transport->progress = verbosity >= 0 && isatty(2);
1037}
1038
1039static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1040{
1041 int i;
1042
1043 fprintf(stderr, _("The following submodule paths contain changes that can\n"
1044 "not be found on any remote:\n"));
1045 for (i = 0; i < needs_pushing->nr; i++)
1046 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
1047 fprintf(stderr, _("\nPlease try\n\n"
1048 " git push --recurse-submodules=on-demand\n\n"
1049 "or cd to the path and use\n\n"
1050 " git push\n\n"
1051 "to push them to a remote.\n\n"));
1052
1053 string_list_clear(needs_pushing, 0);
1054
1055 die(_("Aborting."));
1056}
1057
1058static int run_pre_push_hook(struct transport *transport,
1059 struct ref *remote_refs)
1060{
1061 int ret = 0, x;
1062 struct ref *r;
1063 struct child_process proc = CHILD_PROCESS_INIT;
1064 struct strbuf buf;
1065 const char *argv[4];
1066
1067 if (!(argv[0] = find_hook("pre-push")))
1068 return 0;
1069
1070 argv[1] = transport->remote->name;
1071 argv[2] = transport->url;
1072 argv[3] = NULL;
1073
1074 proc.argv = argv;
1075 proc.in = -1;
1076 proc.trace2_hook_name = "pre-push";
1077
1078 if (start_command(&proc)) {
1079 finish_command(&proc);
1080 return -1;
1081 }
1082
1083 sigchain_push(SIGPIPE, SIG_IGN);
1084
1085 strbuf_init(&buf, 256);
1086
1087 for (r = remote_refs; r; r = r->next) {
1088 if (!r->peer_ref) continue;
1089 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1090 if (r->status == REF_STATUS_REJECT_STALE) continue;
1091 if (r->status == REF_STATUS_UPTODATE) continue;
1092
1093 strbuf_reset(&buf);
1094 strbuf_addf( &buf, "%s %s %s %s\n",
1095 r->peer_ref->name, oid_to_hex(&r->new_oid),
1096 r->name, oid_to_hex(&r->old_oid));
1097
1098 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1099 /* We do not mind if a hook does not read all refs. */
1100 if (errno != EPIPE)
1101 ret = -1;
1102 break;
1103 }
1104 }
1105
1106 strbuf_release(&buf);
1107
1108 x = close(proc.in);
1109 if (!ret)
1110 ret = x;
1111
1112 sigchain_pop(SIGPIPE);
1113
1114 x = finish_command(&proc);
1115 if (!ret)
1116 ret = x;
1117
1118 return ret;
1119}
1120
1121int transport_push(struct repository *r,
1122 struct transport *transport,
1123 struct refspec *rs, int flags,
1124 unsigned int *reject_reasons)
1125{
1126 *reject_reasons = 0;
1127
1128 if (transport_color_config() < 0)
1129 return -1;
1130
1131 if (transport->vtable->push_refs) {
1132 struct ref *remote_refs;
1133 struct ref *local_refs = get_local_heads();
1134 int match_flags = MATCH_REFS_NONE;
1135 int verbose = (transport->verbose > 0);
1136 int quiet = (transport->verbose < 0);
1137 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1138 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1139 int push_ret, ret, err;
1140 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1141
1142 if (check_push_refs(local_refs, rs) < 0)
1143 return -1;
1144
1145 refspec_ref_prefixes(rs, &ref_prefixes);
1146
1147 trace2_region_enter("transport_push", "get_refs_list", r);
1148 remote_refs = transport->vtable->get_refs_list(transport, 1,
1149 &ref_prefixes);
1150 trace2_region_leave("transport_push", "get_refs_list", r);
1151
1152 argv_array_clear(&ref_prefixes);
1153
1154 if (flags & TRANSPORT_PUSH_ALL)
1155 match_flags |= MATCH_REFS_ALL;
1156 if (flags & TRANSPORT_PUSH_MIRROR)
1157 match_flags |= MATCH_REFS_MIRROR;
1158 if (flags & TRANSPORT_PUSH_PRUNE)
1159 match_flags |= MATCH_REFS_PRUNE;
1160 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1161 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1162
1163 if (match_push_refs(local_refs, &remote_refs, rs, match_flags))
1164 return -1;
1165
1166 if (transport->smart_options &&
1167 transport->smart_options->cas &&
1168 !is_empty_cas(transport->smart_options->cas))
1169 apply_push_cas(transport->smart_options->cas,
1170 transport->remote, remote_refs);
1171
1172 set_ref_status_for_push(remote_refs,
1173 flags & TRANSPORT_PUSH_MIRROR,
1174 flags & TRANSPORT_PUSH_FORCE);
1175
1176 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1177 if (run_pre_push_hook(transport, remote_refs))
1178 return -1;
1179
1180 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1181 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1182 !is_bare_repository()) {
1183 struct ref *ref = remote_refs;
1184 struct oid_array commits = OID_ARRAY_INIT;
1185
1186 trace2_region_enter("transport_push", "push_submodules", r);
1187 for (; ref; ref = ref->next)
1188 if (!is_null_oid(&ref->new_oid))
1189 oid_array_append(&commits,
1190 &ref->new_oid);
1191
1192 if (!push_unpushed_submodules(r,
1193 &commits,
1194 transport->remote,
1195 rs,
1196 transport->push_options,
1197 pretend)) {
1198 oid_array_clear(&commits);
1199 trace2_region_leave("transport_push", "push_submodules", r);
1200 die(_("failed to push all needed submodules"));
1201 }
1202 oid_array_clear(&commits);
1203 trace2_region_leave("transport_push", "push_submodules", r);
1204 }
1205
1206 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1207 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1208 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1209 !pretend)) && !is_bare_repository()) {
1210 struct ref *ref = remote_refs;
1211 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1212 struct oid_array commits = OID_ARRAY_INIT;
1213
1214 trace2_region_enter("transport_push", "check_submodules", r);
1215 for (; ref; ref = ref->next)
1216 if (!is_null_oid(&ref->new_oid))
1217 oid_array_append(&commits,
1218 &ref->new_oid);
1219
1220 if (find_unpushed_submodules(r,
1221 &commits,
1222 transport->remote->name,
1223 &needs_pushing)) {
1224 oid_array_clear(&commits);
1225 trace2_region_leave("transport_push", "check_submodules", r);
1226 die_with_unpushed_submodules(&needs_pushing);
1227 }
1228 string_list_clear(&needs_pushing, 0);
1229 oid_array_clear(&commits);
1230 trace2_region_leave("transport_push", "check_submodules", r);
1231 }
1232
1233 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY)) {
1234 trace2_region_enter("transport_push", "push_refs", r);
1235 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1236 trace2_region_leave("transport_push", "push_refs", r);
1237 } else
1238 push_ret = 0;
1239 err = push_had_errors(remote_refs);
1240 ret = push_ret | err;
1241
1242 if (!quiet || err)
1243 transport_print_push_status(transport->url, remote_refs,
1244 verbose | porcelain, porcelain,
1245 reject_reasons);
1246
1247 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1248 set_upstreams(transport, remote_refs, pretend);
1249
1250 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1251 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1252 struct ref *ref;
1253 for (ref = remote_refs; ref; ref = ref->next)
1254 transport_update_tracking_ref(transport->remote, ref, verbose);
1255 }
1256
1257 if (porcelain && !push_ret)
1258 puts("Done");
1259 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1260 fprintf(stderr, "Everything up-to-date\n");
1261
1262 return ret;
1263 }
1264 return 1;
1265}
1266
1267const struct ref *transport_get_remote_refs(struct transport *transport,
1268 const struct argv_array *ref_prefixes)
1269{
1270 if (!transport->got_remote_refs) {
1271 transport->remote_refs =
1272 transport->vtable->get_refs_list(transport, 0,
1273 ref_prefixes);
1274 transport->got_remote_refs = 1;
1275 }
1276
1277 return transport->remote_refs;
1278}
1279
1280int transport_fetch_refs(struct transport *transport, struct ref *refs)
1281{
1282 int rc;
1283 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1284 struct ref **heads = NULL;
1285 struct ref *rm;
1286
1287 for (rm = refs; rm; rm = rm->next) {
1288 nr_refs++;
1289 if (rm->peer_ref &&
1290 !is_null_oid(&rm->old_oid) &&
1291 oideq(&rm->peer_ref->old_oid, &rm->old_oid))
1292 continue;
1293 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1294 heads[nr_heads++] = rm;
1295 }
1296
1297 if (!nr_heads) {
1298 /*
1299 * When deepening of a shallow repository is requested,
1300 * then local and remote refs are likely to still be equal.
1301 * Just feed them all to the fetch method in that case.
1302 * This condition shouldn't be met in a non-deepening fetch
1303 * (see builtin/fetch.c:quickfetch()).
1304 */
1305 ALLOC_ARRAY(heads, nr_refs);
1306 for (rm = refs; rm; rm = rm->next)
1307 heads[nr_heads++] = rm;
1308 }
1309
1310 rc = transport->vtable->fetch(transport, nr_heads, heads);
1311
1312 free(heads);
1313 return rc;
1314}
1315
1316void transport_unlock_pack(struct transport *transport)
1317{
1318 if (transport->pack_lockfile) {
1319 unlink_or_warn(transport->pack_lockfile);
1320 FREE_AND_NULL(transport->pack_lockfile);
1321 }
1322}
1323
1324int transport_connect(struct transport *transport, const char *name,
1325 const char *exec, int fd[2])
1326{
1327 if (transport->vtable->connect)
1328 return transport->vtable->connect(transport, name, exec, fd);
1329 else
1330 die(_("operation not supported by protocol"));
1331}
1332
1333int transport_disconnect(struct transport *transport)
1334{
1335 int ret = 0;
1336 if (transport->vtable->disconnect)
1337 ret = transport->vtable->disconnect(transport);
1338 free(transport);
1339 return ret;
1340}
1341
1342/*
1343 * Strip username (and password) from a URL and return
1344 * it in a newly allocated string.
1345 */
1346char *transport_anonymize_url(const char *url)
1347{
1348 char *scheme_prefix, *anon_part;
1349 size_t anon_len, prefix_len = 0;
1350
1351 anon_part = strchr(url, '@');
1352 if (url_is_local_not_ssh(url) || !anon_part)
1353 goto literal_copy;
1354
1355 anon_len = strlen(++anon_part);
1356 scheme_prefix = strstr(url, "://");
1357 if (!scheme_prefix) {
1358 if (!strchr(anon_part, ':'))
1359 /* cannot be "me@there:/path/name" */
1360 goto literal_copy;
1361 } else {
1362 const char *cp;
1363 /* make sure scheme is reasonable */
1364 for (cp = url; cp < scheme_prefix; cp++) {
1365 switch (*cp) {
1366 /* RFC 1738 2.1 */
1367 case '+': case '.': case '-':
1368 break; /* ok */
1369 default:
1370 if (isalnum(*cp))
1371 break;
1372 /* it isn't */
1373 goto literal_copy;
1374 }
1375 }
1376 /* @ past the first slash does not count */
1377 cp = strchr(scheme_prefix + 3, '/');
1378 if (cp && cp < anon_part)
1379 goto literal_copy;
1380 prefix_len = scheme_prefix - url + 3;
1381 }
1382 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1383 (int)anon_len, anon_part);
1384literal_copy:
1385 return xstrdup(url);
1386}
Unnamed repository; edit this file 'description' to name the repository.