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 "sha1-array.h"
20#include "sigchain.h"
21#include "transport-internal.h"
22#include "protocol.h"
23#include "object-store.h"
24#include "color.h"
25static int transport_use_color = -1;
27static char transport_colors[][COLOR_MAXLEN] = {
28 GIT_COLOR_RESET,
29 GIT_COLOR_RED /* REJECTED */
30};
31enum color_transport {
33 TRANSPORT_COLOR_RESET = 0,
34 TRANSPORT_COLOR_REJECTED = 1
35};
36static 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 if (initialized)
48 return 0;
49 initialized = 1;
50 if (!git_config_get_string(key, &value))
52 transport_use_color = git_config_colorbool(key, value);
53 if (!want_color_stderr(transport_use_color))
55 return 0;
56 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 return 0;
66}
67static 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}
74static 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 /* 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 /* 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 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}
121struct bundle_transport_data {
123 int fd;
124 struct bundle_header header;
125};
126static struct ref *get_refs_from_bundle(struct transport *transport,
128 int for_push,
129 const struct argv_array *ref_prefixes)
130{
131 struct bundle_transport_data *data = transport->data;
132 struct ref *result = NULL;
133 int i;
134 if (for_push)
136 return NULL;
137 if (data->fd > 0)
139 close(data->fd);
140 data->fd = read_bundle_header(transport->url, &data->header);
141 if (data->fd < 0)
142 die(_("could not read bundle '%s'"), transport->url);
143 for (i = 0; i < data->header.references.nr; i++) {
144 struct ref_list_entry *e = data->header.references.list + i;
145 struct ref *ref = alloc_ref(e->name);
146 oidcpy(&ref->old_oid, &e->oid);
147 ref->next = result;
148 result = ref;
149 }
150 return result;
151}
152static int fetch_refs_from_bundle(struct transport *transport,
154 int nr_heads, struct ref **to_fetch)
155{
156 struct bundle_transport_data *data = transport->data;
157 return unbundle(the_repository, &data->header, data->fd,
158 transport->progress ? BUNDLE_VERBOSE : 0);
159}
160static int close_bundle(struct transport *transport)
162{
163 struct bundle_transport_data *data = transport->data;
164 if (data->fd > 0)
165 close(data->fd);
166 free(data);
167 return 0;
168}
169struct git_transport_data {
171 struct git_transport_options options;
172 struct child_process *conn;
173 int fd[2];
174 unsigned got_remote_heads : 1;
175 enum protocol_version version;
176 struct oid_array extra_have;
177 struct oid_array shallow;
178};
179static int set_git_option(struct git_transport_options *opts,
181 const char *name, const char *value)
182{
183 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
184 opts->uploadpack = value;
185 return 0;
186 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
187 opts->receivepack = value;
188 return 0;
189 } else if (!strcmp(name, TRANS_OPT_THIN)) {
190 opts->thin = !!value;
191 return 0;
192 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
193 opts->followtags = !!value;
194 return 0;
195 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
196 opts->keep = !!value;
197 return 0;
198 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
199 opts->update_shallow = !!value;
200 return 0;
201 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
202 if (!value)
203 opts->depth = 0;
204 else {
205 char *end;
206 opts->depth = strtol(value, &end, 0);
207 if (*end)
208 die(_("transport: invalid depth option '%s'"), value);
209 }
210 return 0;
211 } else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
212 opts->deepen_since = value;
213 return 0;
214 } else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
215 opts->deepen_not = (const struct string_list *)value;
216 return 0;
217 } else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
218 opts->deepen_relative = !!value;
219 return 0;
220 } else if (!strcmp(name, TRANS_OPT_FROM_PROMISOR)) {
221 opts->from_promisor = !!value;
222 return 0;
223 } else if (!strcmp(name, TRANS_OPT_NO_DEPENDENTS)) {
224 opts->no_dependents = !!value;
225 return 0;
226 } else if (!strcmp(name, TRANS_OPT_LIST_OBJECTS_FILTER)) {
227 parse_list_objects_filter(&opts->filter_options, value);
228 return 0;
229 }
230 return 1;
231}
232static int connect_setup(struct transport *transport, int for_push)
234{
235 struct git_transport_data *data = transport->data;
236 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
237 if (data->conn)
239 return 0;
240 switch (transport->family) {
242 case TRANSPORT_FAMILY_ALL: break;
243 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
244 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
245 }
246 data->conn = git_connect(data->fd, transport->url,
248 for_push ? data->options.receivepack :
249 data->options.uploadpack,
250 flags);
251 return 0;
253}
254/*
256 * Obtains the protocol version from the transport and writes it to
257 * transport->data->version, first connecting if not already connected.
258 *
259 * If the protocol version is one that allows skipping the listing of remote
260 * refs, and must_list_refs is 0, the listing of remote refs is skipped and
261 * this function returns NULL. Otherwise, this function returns the list of
262 * remote refs.
263 */
264static struct ref *handshake(struct transport *transport, int for_push,
265 const struct argv_array *ref_prefixes,
266 int must_list_refs)
267{
268 struct git_transport_data *data = transport->data;
269 struct ref *refs = NULL;
270 struct packet_reader reader;
271 connect_setup(transport, for_push);
273 packet_reader_init(&reader, data->fd[0], NULL, 0,
275 PACKET_READ_CHOMP_NEWLINE |
276 PACKET_READ_GENTLE_ON_EOF |
277 PACKET_READ_DIE_ON_ERR_PACKET);
278 data->version = discover_version(&reader);
280 switch (data->version) {
281 case protocol_v2:
282 if (must_list_refs)
283 get_remote_refs(data->fd[1], &reader, &refs, for_push,
284 ref_prefixes,
285 transport->server_options);
286 break;
287 case protocol_v1:
288 case protocol_v0:
289 get_remote_heads(&reader, &refs,
290 for_push ? REF_NORMAL : 0,
291 &data->extra_have,
292 &data->shallow);
293 break;
294 case protocol_unknown_version:
295 BUG("unknown protocol version");
296 }
297 data->got_remote_heads = 1;
298 if (reader.line_peeked)
300 BUG("buffer must be empty at the end of handshake()");
301 return refs;
303}
304static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
306 const struct argv_array *ref_prefixes)
307{
308 return handshake(transport, for_push, ref_prefixes, 1);
309}
310static int fetch_refs_via_pack(struct transport *transport,
312 int nr_heads, struct ref **to_fetch)
313{
314 int ret = 0;
315 struct git_transport_data *data = transport->data;
316 struct ref *refs = NULL;
317 struct fetch_pack_args args;
318 struct ref *refs_tmp = NULL;
319 memset(&args, 0, sizeof(args));
321 args.uploadpack = data->options.uploadpack;
322 args.keep_pack = data->options.keep;
323 args.lock_pack = 1;
324 args.use_thin_pack = data->options.thin;
325 args.include_tag = data->options.followtags;
326 args.verbose = (transport->verbose > 1);
327 args.quiet = (transport->verbose < 0);
328 args.no_progress = !transport->progress;
329 args.depth = data->options.depth;
330 args.deepen_since = data->options.deepen_since;
331 args.deepen_not = data->options.deepen_not;
332 args.deepen_relative = data->options.deepen_relative;
333 args.check_self_contained_and_connected =
334 data->options.check_self_contained_and_connected;
335 args.cloning = transport->cloning;
336 args.update_shallow = data->options.update_shallow;
337 args.from_promisor = data->options.from_promisor;
338 args.no_dependents = data->options.no_dependents;
339 args.filter_options = data->options.filter_options;
340 args.stateless_rpc = transport->stateless_rpc;
341 args.server_options = transport->server_options;
342 args.negotiation_tips = data->options.negotiation_tips;
343 if (!data->got_remote_heads) {
345 int i;
346 int must_list_refs = 0;
347 for (i = 0; i < nr_heads; i++) {
348 if (!to_fetch[i]->exact_oid) {
349 must_list_refs = 1;
350 break;
351 }
352 }
353 refs_tmp = handshake(transport, 0, NULL, must_list_refs);
354 }
355 switch (data->version) {
357 case protocol_v2:
358 refs = fetch_pack(&args, data->fd,
359 refs_tmp ? refs_tmp : transport->remote_refs,
360 to_fetch, nr_heads, &data->shallow,
361 &transport->pack_lockfile, data->version);
362 break;
363 case protocol_v1:
364 case protocol_v0:
365 refs = fetch_pack(&args, data->fd,
366 refs_tmp ? refs_tmp : transport->remote_refs,
367 to_fetch, nr_heads, &data->shallow,
368 &transport->pack_lockfile, data->version);
369 break;
370 case protocol_unknown_version:
371 BUG("unknown protocol version");
372 }
373 close(data->fd[0]);
375 close(data->fd[1]);
376 if (finish_connect(data->conn))
377 ret = -1;
378 data->conn = NULL;
379 data->got_remote_heads = 0;
380 data->options.self_contained_and_connected =
381 args.self_contained_and_connected;
382 data->options.connectivity_checked = args.connectivity_checked;
383 if (refs == NULL)
385 ret = -1;
386 if (report_unmatched_refs(to_fetch, nr_heads))
387 ret = -1;
388 free_refs(refs_tmp);
390 free_refs(refs);
391 return ret;
392}
393static int push_had_errors(struct ref *ref)
395{
396 for (; ref; ref = ref->next) {
397 switch (ref->status) {
398 case REF_STATUS_NONE:
399 case REF_STATUS_UPTODATE:
400 case REF_STATUS_OK:
401 break;
402 default:
403 return 1;
404 }
405 }
406 return 0;
407}
408int transport_refs_pushed(struct ref *ref)
410{
411 for (; ref; ref = ref->next) {
412 switch(ref->status) {
413 case REF_STATUS_NONE:
414 case REF_STATUS_UPTODATE:
415 break;
416 default:
417 return 1;
418 }
419 }
420 return 0;
421}
422void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
424{
425 struct refspec_item rs;
426 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
428 return;
429 rs.src = ref->name;
431 rs.dst = NULL;
432 if (!remote_find_tracking(remote, &rs)) {
434 if (verbose)
435 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
436 if (ref->deletion) {
437 delete_ref(NULL, rs.dst, NULL, 0);
438 } else
439 update_ref("update by push", rs.dst, &ref->new_oid,
440 NULL, 0, 0);
441 free(rs.dst);
442 }
443}
444static void print_ref_status(char flag, const char *summary,
446 struct ref *to, struct ref *from, const char *msg,
447 int porcelain, int summary_width)
448{
449 if (porcelain) {
450 if (from)
451 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
452 else
453 fprintf(stdout, "%c\t:%s\t", flag, to->name);
454 if (msg)
455 fprintf(stdout, "%s (%s)\n", summary, msg);
456 else
457 fprintf(stdout, "%s\n", summary);
458 } else {
459 const char *red = "", *reset = "";
460 if (push_had_errors(to)) {
461 red = transport_get_color(TRANSPORT_COLOR_REJECTED);
462 reset = transport_get_color(TRANSPORT_COLOR_RESET);
463 }
464 fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
465 summary, reset);
466 if (from)
467 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
468 else
469 fputs(prettify_refname(to->name), stderr);
470 if (msg) {
471 fputs(" (", stderr);
472 fputs(msg, stderr);
473 fputc(')', stderr);
474 }
475 fputc('\n', stderr);
476 }
477}
478static void print_ok_ref_status(struct ref *ref, int porcelain, int summary_width)
480{
481 if (ref->deletion)
482 print_ref_status('-', "[deleted]", ref, NULL, NULL,
483 porcelain, summary_width);
484 else if (is_null_oid(&ref->old_oid))
485 print_ref_status('*',
486 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
487 "[new branch]"),
488 ref, ref->peer_ref, NULL, porcelain, summary_width);
489 else {
490 struct strbuf quickref = STRBUF_INIT;
491 char type;
492 const char *msg;
493 strbuf_add_unique_abbrev(&quickref, &ref->old_oid,
495 DEFAULT_ABBREV);
496 if (ref->forced_update) {
497 strbuf_addstr(&quickref, "...");
498 type = '+';
499 msg = "forced update";
500 } else {
501 strbuf_addstr(&quickref, "..");
502 type = ' ';
503 msg = NULL;
504 }
505 strbuf_add_unique_abbrev(&quickref, &ref->new_oid,
506 DEFAULT_ABBREV);
507 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
509 porcelain, summary_width);
510 strbuf_release(&quickref);
511 }
512}
513static int print_one_push_status(struct ref *ref, const char *dest, int count,
515 int porcelain, int summary_width)
516{
517 if (!count) {
518 char *url = transport_anonymize_url(dest);
519 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
520 free(url);
521 }
522 switch(ref->status) {
524 case REF_STATUS_NONE:
525 print_ref_status('X', "[no match]", ref, NULL, NULL,
526 porcelain, summary_width);
527 break;
528 case REF_STATUS_REJECT_NODELETE:
529 print_ref_status('!', "[rejected]", ref, NULL,
530 "remote does not support deleting refs",
531 porcelain, summary_width);
532 break;
533 case REF_STATUS_UPTODATE:
534 print_ref_status('=', "[up to date]", ref,
535 ref->peer_ref, NULL, porcelain, summary_width);
536 break;
537 case REF_STATUS_REJECT_NONFASTFORWARD:
538 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
539 "non-fast-forward", porcelain, summary_width);
540 break;
541 case REF_STATUS_REJECT_ALREADY_EXISTS:
542 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
543 "already exists", porcelain, summary_width);
544 break;
545 case REF_STATUS_REJECT_FETCH_FIRST:
546 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
547 "fetch first", porcelain, summary_width);
548 break;
549 case REF_STATUS_REJECT_NEEDS_FORCE:
550 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
551 "needs force", porcelain, summary_width);
552 break;
553 case REF_STATUS_REJECT_STALE:
554 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
555 "stale info", porcelain, summary_width);
556 break;
557 case REF_STATUS_REJECT_SHALLOW:
558 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
559 "new shallow roots not allowed",
560 porcelain, summary_width);
561 break;
562 case REF_STATUS_REMOTE_REJECT:
563 print_ref_status('!', "[remote rejected]", ref,
564 ref->deletion ? NULL : ref->peer_ref,
565 ref->remote_status, porcelain, summary_width);
566 break;
567 case REF_STATUS_EXPECTING_REPORT:
568 print_ref_status('!', "[remote failure]", ref,
569 ref->deletion ? NULL : ref->peer_ref,
570 "remote failed to report status",
571 porcelain, summary_width);
572 break;
573 case REF_STATUS_ATOMIC_PUSH_FAILED:
574 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
575 "atomic push failed", porcelain, summary_width);
576 break;
577 case REF_STATUS_OK:
578 print_ok_ref_status(ref, porcelain, summary_width);
579 break;
580 }
581 return 1;
583}
584static int measure_abbrev(const struct object_id *oid, int sofar)
586{
587 char hex[GIT_MAX_HEXSZ + 1];
588 int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
589 return (w < sofar) ? sofar : w;
591}
592int transport_summary_width(const struct ref *refs)
594{
595 int maxw = -1;
596 for (; refs; refs = refs->next) {
598 maxw = measure_abbrev(&refs->old_oid, maxw);
599 maxw = measure_abbrev(&refs->new_oid, maxw);
600 }
601 if (maxw < 0)
602 maxw = FALLBACK_DEFAULT_ABBREV;
603 return (2 * maxw + 3);
604}
605void transport_print_push_status(const char *dest, struct ref *refs,
607 int verbose, int porcelain, unsigned int *reject_reasons)
608{
609 struct ref *ref;
610 int n = 0;
611 char *head;
612 int summary_width = transport_summary_width(refs);
613 if (transport_color_config() < 0)
615 warning(_("could not parse transport.color.* config"));
616 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
618 if (verbose) {
620 for (ref = refs; ref; ref = ref->next)
621 if (ref->status == REF_STATUS_UPTODATE)
622 n += print_one_push_status(ref, dest, n,
623 porcelain, summary_width);
624 }
625 for (ref = refs; ref; ref = ref->next)
627 if (ref->status == REF_STATUS_OK)
628 n += print_one_push_status(ref, dest, n,
629 porcelain, summary_width);
630 *reject_reasons = 0;
632 for (ref = refs; ref; ref = ref->next) {
633 if (ref->status != REF_STATUS_NONE &&
634 ref->status != REF_STATUS_UPTODATE &&
635 ref->status != REF_STATUS_OK)
636 n += print_one_push_status(ref, dest, n,
637 porcelain, summary_width);
638 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
639 if (head != NULL && !strcmp(head, ref->name))
640 *reject_reasons |= REJECT_NON_FF_HEAD;
641 else
642 *reject_reasons |= REJECT_NON_FF_OTHER;
643 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
644 *reject_reasons |= REJECT_ALREADY_EXISTS;
645 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
646 *reject_reasons |= REJECT_FETCH_FIRST;
647 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
648 *reject_reasons |= REJECT_NEEDS_FORCE;
649 }
650 }
651 free(head);
652}
653static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
655{
656 struct git_transport_data *data = transport->data;
657 struct send_pack_args args;
658 int ret = 0;
659 if (transport_color_config() < 0)
661 return -1;
662 if (!data->got_remote_heads)
664 get_refs_via_connect(transport, 1, NULL);
665 memset(&args, 0, sizeof(args));
667 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
668 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
669 args.use_thin_pack = data->options.thin;
670 args.verbose = (transport->verbose > 0);
671 args.quiet = (transport->verbose < 0);
672 args.progress = transport->progress;
673 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
674 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
675 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
676 args.push_options = transport->push_options;
677 args.url = transport->url;
678 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
680 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
681 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
682 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
683 else
684 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
685 switch (data->version) {
687 case protocol_v2:
688 die(_("support for protocol v2 not implemented yet"));
689 break;
690 case protocol_v1:
691 case protocol_v0:
692 ret = send_pack(&args, data->fd, data->conn, remote_refs,
693 &data->extra_have);
694 break;
695 case protocol_unknown_version:
696 BUG("unknown protocol version");
697 }
698 close(data->fd[1]);
700 close(data->fd[0]);
701 ret |= finish_connect(data->conn);
702 data->conn = NULL;
703 data->got_remote_heads = 0;
704 return ret;
706}
707static int connect_git(struct transport *transport, const char *name,
709 const char *executable, int fd[2])
710{
711 struct git_transport_data *data = transport->data;
712 data->conn = git_connect(data->fd, transport->url,
713 executable, 0);
714 fd[0] = data->fd[0];
715 fd[1] = data->fd[1];
716 return 0;
717}
718static int disconnect_git(struct transport *transport)
720{
721 struct git_transport_data *data = transport->data;
722 if (data->conn) {
723 if (data->got_remote_heads)
724 packet_flush(data->fd[1]);
725 close(data->fd[0]);
726 close(data->fd[1]);
727 finish_connect(data->conn);
728 }
729 free(data);
731 return 0;
732}
733static struct transport_vtable taken_over_vtable = {
735 1,
736 NULL,
737 get_refs_via_connect,
738 fetch_refs_via_pack,
739 git_transport_push,
740 NULL,
741 disconnect_git
742};
743void transport_take_over(struct transport *transport,
745 struct child_process *child)
746{
747 struct git_transport_data *data;
748 if (!transport->smart_options)
750 BUG("taking over transport requires non-NULL "
751 "smart_options field.");
752 data = xcalloc(1, sizeof(*data));
754 data->options = *transport->smart_options;
755 data->conn = child;
756 data->fd[0] = data->conn->out;
757 data->fd[1] = data->conn->in;
758 data->got_remote_heads = 0;
759 transport->data = data;
760 transport->vtable = &taken_over_vtable;
762 transport->smart_options = &(data->options);
763 transport->cannot_reuse = 1;
765}
766static int is_file(const char *url)
768{
769 struct stat buf;
770 if (stat(url, &buf))
771 return 0;
772 return S_ISREG(buf.st_mode);
773}
774static int external_specification_len(const char *url)
776{
777 return strchr(url, ':') - url;
778}
779static const struct string_list *protocol_whitelist(void)
781{
782 static int enabled = -1;
783 static struct string_list allowed = STRING_LIST_INIT_DUP;
784 if (enabled < 0) {
786 const char *v = getenv("GIT_ALLOW_PROTOCOL");
787 if (v) {
788 string_list_split(&allowed, v, ':', -1);
789 string_list_sort(&allowed);
790 enabled = 1;
791 } else {
792 enabled = 0;
793 }
794 }
795 return enabled ? &allowed : NULL;
797}
798enum protocol_allow_config {
800 PROTOCOL_ALLOW_NEVER = 0,
801 PROTOCOL_ALLOW_USER_ONLY,
802 PROTOCOL_ALLOW_ALWAYS
803};
804static enum protocol_allow_config parse_protocol_config(const char *key,
806 const char *value)
807{
808 if (!strcasecmp(value, "always"))
809 return PROTOCOL_ALLOW_ALWAYS;
810 else if (!strcasecmp(value, "never"))
811 return PROTOCOL_ALLOW_NEVER;
812 else if (!strcasecmp(value, "user"))
813 return PROTOCOL_ALLOW_USER_ONLY;
814 die(_("unknown value for config '%s': %s"), key, value);
816}
817static enum protocol_allow_config get_protocol_config(const char *type)
819{
820 char *key = xstrfmt("protocol.%s.allow", type);
821 char *value;
822 /* first check the per-protocol config */
824 if (!git_config_get_string(key, &value)) {
825 enum protocol_allow_config ret =
826 parse_protocol_config(key, value);
827 free(key);
828 free(value);
829 return ret;
830 }
831 free(key);
832 /* if defined, fallback to user-defined default for unknown protocols */
834 if (!git_config_get_string("protocol.allow", &value)) {
835 enum protocol_allow_config ret =
836 parse_protocol_config("protocol.allow", value);
837 free(value);
838 return ret;
839 }
840 /* fallback to built-in defaults */
842 /* known safe */
843 if (!strcmp(type, "http") ||
844 !strcmp(type, "https") ||
845 !strcmp(type, "git") ||
846 !strcmp(type, "ssh") ||
847 !strcmp(type, "file"))
848 return PROTOCOL_ALLOW_ALWAYS;
849 /* known scary; err on the side of caution */
851 if (!strcmp(type, "ext"))
852 return PROTOCOL_ALLOW_NEVER;
853 /* unknown; by default let them be used only directly by the user */
855 return PROTOCOL_ALLOW_USER_ONLY;
856}
857int is_transport_allowed(const char *type, int from_user)
859{
860 const struct string_list *whitelist = protocol_whitelist();
861 if (whitelist)
862 return string_list_has_string(whitelist, type);
863 switch (get_protocol_config(type)) {
865 case PROTOCOL_ALLOW_ALWAYS:
866 return 1;
867 case PROTOCOL_ALLOW_NEVER:
868 return 0;
869 case PROTOCOL_ALLOW_USER_ONLY:
870 if (from_user < 0)
871 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
872 return from_user;
873 }
874 BUG("invalid protocol_allow_config type");
876}
877void transport_check_allowed(const char *type)
879{
880 if (!is_transport_allowed(type, -1))
881 die(_("transport '%s' not allowed"), type);
882}
883static struct transport_vtable bundle_vtable = {
885 0,
886 NULL,
887 get_refs_from_bundle,
888 fetch_refs_from_bundle,
889 NULL,
890 NULL,
891 close_bundle
892};
893static struct transport_vtable builtin_smart_vtable = {
895 1,
896 NULL,
897 get_refs_via_connect,
898 fetch_refs_via_pack,
899 git_transport_push,
900 connect_git,
901 disconnect_git
902};
903struct transport *transport_get(struct remote *remote, const char *url)
905{
906 const char *helper;
907 struct transport *ret = xcalloc(1, sizeof(*ret));
908 ret->progress = isatty(2);
910 if (!remote)
912 BUG("No remote provided to transport_get()");
913 ret->got_remote_refs = 0;
915 ret->remote = remote;
916 helper = remote->foreign_vcs;
917 if (!url && remote->url)
919 url = remote->url[0];
920 ret->url = url;
921 /* maybe it is a foreign URL? */
923 if (url) {
924 const char *p = url;
925 while (is_urlschemechar(p == url, *p))
927 p++;
928 if (starts_with(p, "::"))
929 helper = xstrndup(url, p - url);
930 }
931 if (helper) {
933 transport_helper_init(ret, helper);
934 } else if (starts_with(url, "rsync:")) {
935 die(_("git-over-rsync is no longer supported"));
936 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
937 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
938 transport_check_allowed("file");
939 ret->data = data;
940 ret->vtable = &bundle_vtable;
941 ret->smart_options = NULL;
942 } else if (!is_url(url)
943 || starts_with(url, "file://")
944 || starts_with(url, "git://")
945 || starts_with(url, "ssh://")
946 || starts_with(url, "git+ssh://") /* deprecated - do not use */
947 || starts_with(url, "ssh+git://") /* deprecated - do not use */
948 ) {
949 /*
950 * These are builtin smart transports; "allowed" transports
951 * will be checked individually in git_connect.
952 */
953 struct git_transport_data *data = xcalloc(1, sizeof(*data));
954 ret->data = data;
955 ret->vtable = &builtin_smart_vtable;
956 ret->smart_options = &(data->options);
957 data->conn = NULL;
959 data->got_remote_heads = 0;
960 } else {
961 /* Unknown protocol in URL. Pass to external handler. */
962 int len = external_specification_len(url);
963 char *handler = xmemdupz(url, len);
964 transport_helper_init(ret, handler);
965 }
966 if (ret->smart_options) {
968 ret->smart_options->thin = 1;
969 ret->smart_options->uploadpack = "git-upload-pack";
970 if (remote->uploadpack)
971 ret->smart_options->uploadpack = remote->uploadpack;
972 ret->smart_options->receivepack = "git-receive-pack";
973 if (remote->receivepack)
974 ret->smart_options->receivepack = remote->receivepack;
975 }
976 return ret;
978}
979int transport_set_option(struct transport *transport,
981 const char *name, const char *value)
982{
983 int git_reports = 1, protocol_reports = 1;
984 if (transport->smart_options)
986 git_reports = set_git_option(transport->smart_options,
987 name, value);
988 if (transport->vtable->set_option)
990 protocol_reports = transport->vtable->set_option(transport,
991 name, value);
992 /* If either report is 0, report 0 (success). */
994 if (!git_reports || !protocol_reports)
995 return 0;
996 /* If either reports -1 (invalid value), report -1. */
997 if ((git_reports == -1) || (protocol_reports == -1))
998 return -1;
999 /* Otherwise if both report unknown, report unknown. */
1000 return 1;
1001}
1002void transport_set_verbosity(struct transport *transport, int verbosity,
1004 int force_progress)
1005{
1006 if (verbosity >= 1)
1007 transport->verbose = verbosity <= 3 ? verbosity : 3;
1008 if (verbosity < 0)
1009 transport->verbose = -1;
1010 /**
1012 * Rules used to determine whether to report progress (processing aborts
1013 * when a rule is satisfied):
1014 *
1015 * . Report progress, if force_progress is 1 (ie. --progress).
1016 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1017 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1018 * . Report progress if isatty(2) is 1.
1019 **/
1020 if (force_progress >= 0)
1021 transport->progress = !!force_progress;
1022 else
1023 transport->progress = verbosity >= 0 && isatty(2);
1024}
1025static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1027{
1028 int i;
1029 fprintf(stderr, _("The following submodule paths contain changes that can\n"
1031 "not be found on any remote:\n"));
1032 for (i = 0; i < needs_pushing->nr; i++)
1033 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
1034 fprintf(stderr, _("\nPlease try\n\n"
1035 " git push --recurse-submodules=on-demand\n\n"
1036 "or cd to the path and use\n\n"
1037 " git push\n\n"
1038 "to push them to a remote.\n\n"));
1039 string_list_clear(needs_pushing, 0);
1041 die(_("Aborting."));
1043}
1044static int run_pre_push_hook(struct transport *transport,
1046 struct ref *remote_refs)
1047{
1048 int ret = 0, x;
1049 struct ref *r;
1050 struct child_process proc = CHILD_PROCESS_INIT;
1051 struct strbuf buf;
1052 const char *argv[4];
1053 if (!(argv[0] = find_hook("pre-push")))
1055 return 0;
1056 argv[1] = transport->remote->name;
1058 argv[2] = transport->url;
1059 argv[3] = NULL;
1060 proc.argv = argv;
1062 proc.in = -1;
1063 proc.trace2_hook_name = "pre-push";
1064 if (start_command(&proc)) {
1066 finish_command(&proc);
1067 return -1;
1068 }
1069 sigchain_push(SIGPIPE, SIG_IGN);
1071 strbuf_init(&buf, 256);
1073 for (r = remote_refs; r; r = r->next) {
1075 if (!r->peer_ref) continue;
1076 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1077 if (r->status == REF_STATUS_REJECT_STALE) continue;
1078 if (r->status == REF_STATUS_UPTODATE) continue;
1079 strbuf_reset(&buf);
1081 strbuf_addf( &buf, "%s %s %s %s\n",
1082 r->peer_ref->name, oid_to_hex(&r->new_oid),
1083 r->name, oid_to_hex(&r->old_oid));
1084 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1086 /* We do not mind if a hook does not read all refs. */
1087 if (errno != EPIPE)
1088 ret = -1;
1089 break;
1090 }
1091 }
1092 strbuf_release(&buf);
1094 x = close(proc.in);
1096 if (!ret)
1097 ret = x;
1098 sigchain_pop(SIGPIPE);
1100 x = finish_command(&proc);
1102 if (!ret)
1103 ret = x;
1104 return ret;
1106}
1107int transport_push(struct repository *r,
1109 struct transport *transport,
1110 struct refspec *rs, int flags,
1111 unsigned int *reject_reasons)
1112{
1113 *reject_reasons = 0;
1114 if (transport_color_config() < 0)
1116 return -1;
1117 if (transport->vtable->push_refs) {
1119 struct ref *remote_refs;
1120 struct ref *local_refs = get_local_heads();
1121 int match_flags = MATCH_REFS_NONE;
1122 int verbose = (transport->verbose > 0);
1123 int quiet = (transport->verbose < 0);
1124 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1125 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1126 int push_ret, ret, err;
1127 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1128 if (check_push_refs(local_refs, rs) < 0)
1130 return -1;
1131 refspec_ref_prefixes(rs, &ref_prefixes);
1133 remote_refs = transport->vtable->get_refs_list(transport, 1,
1135 &ref_prefixes);
1136 argv_array_clear(&ref_prefixes);
1138 if (flags & TRANSPORT_PUSH_ALL)
1140 match_flags |= MATCH_REFS_ALL;
1141 if (flags & TRANSPORT_PUSH_MIRROR)
1142 match_flags |= MATCH_REFS_MIRROR;
1143 if (flags & TRANSPORT_PUSH_PRUNE)
1144 match_flags |= MATCH_REFS_PRUNE;
1145 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1146 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1147 if (match_push_refs(local_refs, &remote_refs, rs, match_flags))
1149 return -1;
1150 if (transport->smart_options &&
1152 transport->smart_options->cas &&
1153 !is_empty_cas(transport->smart_options->cas))
1154 apply_push_cas(transport->smart_options->cas,
1155 transport->remote, remote_refs);
1156 set_ref_status_for_push(remote_refs,
1158 flags & TRANSPORT_PUSH_MIRROR,
1159 flags & TRANSPORT_PUSH_FORCE);
1160 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1162 if (run_pre_push_hook(transport, remote_refs))
1163 return -1;
1164 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1166 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1167 !is_bare_repository()) {
1168 struct ref *ref = remote_refs;
1169 struct oid_array commits = OID_ARRAY_INIT;
1170 for (; ref; ref = ref->next)
1172 if (!is_null_oid(&ref->new_oid))
1173 oid_array_append(&commits,
1174 &ref->new_oid);
1175 if (!push_unpushed_submodules(r,
1177 &commits,
1178 transport->remote,
1179 rs,
1180 transport->push_options,
1181 pretend)) {
1182 oid_array_clear(&commits);
1183 die(_("failed to push all needed submodules"));
1184 }
1185 oid_array_clear(&commits);
1186 }
1187 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1189 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1190 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1191 !pretend)) && !is_bare_repository()) {
1192 struct ref *ref = remote_refs;
1193 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1194 struct oid_array commits = OID_ARRAY_INIT;
1195 for (; ref; ref = ref->next)
1197 if (!is_null_oid(&ref->new_oid))
1198 oid_array_append(&commits,
1199 &ref->new_oid);
1200 if (find_unpushed_submodules(r,
1202 &commits,
1203 transport->remote->name,
1204 &needs_pushing)) {
1205 oid_array_clear(&commits);
1206 die_with_unpushed_submodules(&needs_pushing);
1207 }
1208 string_list_clear(&needs_pushing, 0);
1209 oid_array_clear(&commits);
1210 }
1211 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY))
1213 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1214 else
1215 push_ret = 0;
1216 err = push_had_errors(remote_refs);
1217 ret = push_ret | err;
1218 if (!quiet || err)
1220 transport_print_push_status(transport->url, remote_refs,
1221 verbose | porcelain, porcelain,
1222 reject_reasons);
1223 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1225 set_upstreams(transport, remote_refs, pretend);
1226 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1228 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1229 struct ref *ref;
1230 for (ref = remote_refs; ref; ref = ref->next)
1231 transport_update_tracking_ref(transport->remote, ref, verbose);
1232 }
1233 if (porcelain && !push_ret)
1235 puts("Done");
1236 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1237 fprintf(stderr, "Everything up-to-date\n");
1238 return ret;
1240 }
1241 return 1;
1242}
1243const struct ref *transport_get_remote_refs(struct transport *transport,
1245 const struct argv_array *ref_prefixes)
1246{
1247 if (!transport->got_remote_refs) {
1248 transport->remote_refs =
1249 transport->vtable->get_refs_list(transport, 0,
1250 ref_prefixes);
1251 transport->got_remote_refs = 1;
1252 }
1253 return transport->remote_refs;
1255}
1256int transport_fetch_refs(struct transport *transport, struct ref *refs)
1258{
1259 int rc;
1260 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1261 struct ref **heads = NULL;
1262 struct ref *rm;
1263 if (!transport->vtable->fetch_without_list)
1265 /*
1266 * Some transports (e.g. the built-in bundle transport and the
1267 * transport helper interface) do not work when fetching is
1268 * done immediately after transport creation. List the remote
1269 * refs anyway (if not already listed) as a workaround.
1270 */
1271 transport_get_remote_refs(transport, NULL);
1272 for (rm = refs; rm; rm = rm->next) {
1274 nr_refs++;
1275 if (rm->peer_ref &&
1276 !is_null_oid(&rm->old_oid) &&
1277 oideq(&rm->peer_ref->old_oid, &rm->old_oid))
1278 continue;
1279 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1280 heads[nr_heads++] = rm;
1281 }
1282 if (!nr_heads) {
1284 /*
1285 * When deepening of a shallow repository is requested,
1286 * then local and remote refs are likely to still be equal.
1287 * Just feed them all to the fetch method in that case.
1288 * This condition shouldn't be met in a non-deepening fetch
1289 * (see builtin/fetch.c:quickfetch()).
1290 */
1291 ALLOC_ARRAY(heads, nr_refs);
1292 for (rm = refs; rm; rm = rm->next)
1293 heads[nr_heads++] = rm;
1294 }
1295 rc = transport->vtable->fetch(transport, nr_heads, heads);
1297 free(heads);
1299 return rc;
1300}
1301void transport_unlock_pack(struct transport *transport)
1303{
1304 if (transport->pack_lockfile) {
1305 unlink_or_warn(transport->pack_lockfile);
1306 FREE_AND_NULL(transport->pack_lockfile);
1307 }
1308}
1309int transport_connect(struct transport *transport, const char *name,
1311 const char *exec, int fd[2])
1312{
1313 if (transport->vtable->connect)
1314 return transport->vtable->connect(transport, name, exec, fd);
1315 else
1316 die(_("operation not supported by protocol"));
1317}
1318int transport_disconnect(struct transport *transport)
1320{
1321 int ret = 0;
1322 if (transport->vtable->disconnect)
1323 ret = transport->vtable->disconnect(transport);
1324 free(transport);
1325 return ret;
1326}
1327/*
1329 * Strip username (and password) from a URL and return
1330 * it in a newly allocated string.
1331 */
1332char *transport_anonymize_url(const char *url)
1333{
1334 char *scheme_prefix, *anon_part;
1335 size_t anon_len, prefix_len = 0;
1336 anon_part = strchr(url, '@');
1338 if (url_is_local_not_ssh(url) || !anon_part)
1339 goto literal_copy;
1340 anon_len = strlen(++anon_part);
1342 scheme_prefix = strstr(url, "://");
1343 if (!scheme_prefix) {
1344 if (!strchr(anon_part, ':'))
1345 /* cannot be "me@there:/path/name" */
1346 goto literal_copy;
1347 } else {
1348 const char *cp;
1349 /* make sure scheme is reasonable */
1350 for (cp = url; cp < scheme_prefix; cp++) {
1351 switch (*cp) {
1352 /* RFC 1738 2.1 */
1353 case '+': case '.': case '-':
1354 break; /* ok */
1355 default:
1356 if (isalnum(*cp))
1357 break;
1358 /* it isn't */
1359 goto literal_copy;
1360 }
1361 }
1362 /* @ past the first slash does not count */
1363 cp = strchr(scheme_prefix + 3, '/');
1364 if (cp && cp < anon_part)
1365 goto literal_copy;
1366 prefix_len = scheme_prefix - url + 3;
1367 }
1368 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1369 (int)anon_len, anon_part);
1370literal_copy:
1371 return xstrdup(url);
1372}
1373static void fill_alternate_refs_command(struct child_process *cmd,
1375 const char *repo_path)
1376{
1377 const char *value;
1378 if (!git_config_get_value("core.alternateRefsCommand", &value)) {
1380 cmd->use_shell = 1;
1381 argv_array_push(&cmd->args, value);
1383 argv_array_push(&cmd->args, repo_path);
1384 } else {
1385 cmd->git_cmd = 1;
1386 argv_array_pushf(&cmd->args, "--git-dir=%s", repo_path);
1388 argv_array_push(&cmd->args, "for-each-ref");
1389 argv_array_push(&cmd->args, "--format=%(objectname)");
1390 if (!git_config_get_value("core.alternateRefsPrefixes", &value)) {
1392 argv_array_push(&cmd->args, "--");
1393 argv_array_split(&cmd->args, value);
1394 }
1395 }
1396 cmd->env = local_repo_env;
1398 cmd->out = -1;
1399}
1400static void read_alternate_refs(const char *path,
1402 alternate_ref_fn *cb,
1403 void *data)
1404{
1405 struct child_process cmd = CHILD_PROCESS_INIT;
1406 struct strbuf line = STRBUF_INIT;
1407 FILE *fh;
1408 fill_alternate_refs_command(&cmd, path);
1410 if (start_command(&cmd))
1412 return;
1413 fh = xfdopen(cmd.out, "r");
1415 while (strbuf_getline_lf(&line, fh) != EOF) {
1416 struct object_id oid;
1417 const char *p;
1418 if (parse_oid_hex(line.buf, &oid, &p) || *p) {
1420 warning(_("invalid line while parsing alternate refs: %s"),
1421 line.buf);
1422 break;
1423 }
1424 cb(&oid, data);
1426 }
1427 fclose(fh);
1429 finish_command(&cmd);
1430}
1431struct alternate_refs_data {
1433 alternate_ref_fn *fn;
1434 void *data;
1435};
1436static int refs_from_alternate_cb(struct object_directory *e,
1438 void *data)
1439{
1440 struct strbuf path = STRBUF_INIT;
1441 size_t base_len;
1442 struct alternate_refs_data *cb = data;
1443 if (!strbuf_realpath(&path, e->path, 0))
1445 goto out;
1446 if (!strbuf_strip_suffix(&path, "/objects"))
1447 goto out;
1448 base_len = path.len;
1449 /* Is this a git repository with refs? */
1451 strbuf_addstr(&path, "/refs");
1452 if (!is_directory(path.buf))
1453 goto out;
1454 strbuf_setlen(&path, base_len);
1455 read_alternate_refs(path.buf, cb->fn, cb->data);
1457out:
1459 strbuf_release(&path);
1460 return 0;
1461}
1462void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1464{
1465 struct alternate_refs_data cb;
1466 cb.fn = fn;
1467 cb.data = data;
1468 foreach_alt_odb(refs_from_alternate_cb, &cb);
1469}