63c3dbab94216f660b422757bfbbac878066804e
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 "branch.h"
15#include "url.h"
16#include "submodule.h"
17#include "string-list.h"
18#include "sha1-array.h"
19#include "sigchain.h"
20#include "transport-internal.h"
21#include "protocol.h"
22static void set_upstreams(struct transport *transport, struct ref *refs,
24 int pretend)
25{
26 struct ref *ref;
27 for (ref = refs; ref; ref = ref->next) {
28 const char *localname;
29 const char *tmp;
30 const char *remotename;
31 int flag = 0;
32 /*
33 * Check suitability for tracking. Must be successful /
34 * already up-to-date ref create/modify (not delete).
35 */
36 if (ref->status != REF_STATUS_OK &&
37 ref->status != REF_STATUS_UPTODATE)
38 continue;
39 if (!ref->peer_ref)
40 continue;
41 if (is_null_oid(&ref->new_oid))
42 continue;
43 /* Follow symbolic refs (mainly for HEAD). */
45 localname = ref->peer_ref->name;
46 remotename = ref->name;
47 tmp = resolve_ref_unsafe(localname, RESOLVE_REF_READING,
48 NULL, &flag);
49 if (tmp && flag & REF_ISSYMREF &&
50 starts_with(tmp, "refs/heads/"))
51 localname = tmp;
52 /* Both source and destination must be local branches. */
54 if (!localname || !starts_with(localname, "refs/heads/"))
55 continue;
56 if (!remotename || !starts_with(remotename, "refs/heads/"))
57 continue;
58 if (!pretend)
60 install_branch_config(BRANCH_CONFIG_VERBOSE,
61 localname + 11, transport->remote->name,
62 remotename);
63 else
64 printf(_("Would set upstream of '%s' to '%s' of '%s'\n"),
65 localname + 11, remotename + 11,
66 transport->remote->name);
67 }
68}
69struct bundle_transport_data {
71 int fd;
72 struct bundle_header header;
73};
74static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
76{
77 struct bundle_transport_data *data = transport->data;
78 struct ref *result = NULL;
79 int i;
80 if (for_push)
82 return NULL;
83 if (data->fd > 0)
85 close(data->fd);
86 data->fd = read_bundle_header(transport->url, &data->header);
87 if (data->fd < 0)
88 die ("Could not read bundle '%s'.", transport->url);
89 for (i = 0; i < data->header.references.nr; i++) {
90 struct ref_list_entry *e = data->header.references.list + i;
91 struct ref *ref = alloc_ref(e->name);
92 oidcpy(&ref->old_oid, &e->oid);
93 ref->next = result;
94 result = ref;
95 }
96 return result;
97}
98static int fetch_refs_from_bundle(struct transport *transport,
100 int nr_heads, struct ref **to_fetch)
101{
102 struct bundle_transport_data *data = transport->data;
103 return unbundle(&data->header, data->fd,
104 transport->progress ? BUNDLE_VERBOSE : 0);
105}
106static int close_bundle(struct transport *transport)
108{
109 struct bundle_transport_data *data = transport->data;
110 if (data->fd > 0)
111 close(data->fd);
112 free(data);
113 return 0;
114}
115struct git_transport_data {
117 struct git_transport_options options;
118 struct child_process *conn;
119 int fd[2];
120 unsigned got_remote_heads : 1;
121 struct oid_array extra_have;
122 struct oid_array shallow;
123};
124static int set_git_option(struct git_transport_options *opts,
126 const char *name, const char *value)
127{
128 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
129 opts->uploadpack = value;
130 return 0;
131 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
132 opts->receivepack = value;
133 return 0;
134 } else if (!strcmp(name, TRANS_OPT_THIN)) {
135 opts->thin = !!value;
136 return 0;
137 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
138 opts->followtags = !!value;
139 return 0;
140 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
141 opts->keep = !!value;
142 return 0;
143 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
144 opts->update_shallow = !!value;
145 return 0;
146 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
147 if (!value)
148 opts->depth = 0;
149 else {
150 char *end;
151 opts->depth = strtol(value, &end, 0);
152 if (*end)
153 die(_("transport: invalid depth option '%s'"), value);
154 }
155 return 0;
156 } else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
157 opts->deepen_since = value;
158 return 0;
159 } else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
160 opts->deepen_not = (const struct string_list *)value;
161 return 0;
162 } else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
163 opts->deepen_relative = !!value;
164 return 0;
165 }
166 return 1;
167}
168static int connect_setup(struct transport *transport, int for_push)
170{
171 struct git_transport_data *data = transport->data;
172 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
173 if (data->conn)
175 return 0;
176 switch (transport->family) {
178 case TRANSPORT_FAMILY_ALL: break;
179 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
180 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
181 }
182 data->conn = git_connect(data->fd, transport->url,
184 for_push ? data->options.receivepack :
185 data->options.uploadpack,
186 flags);
187 return 0;
189}
190static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
192{
193 struct git_transport_data *data = transport->data;
194 struct ref *refs = NULL;
195 struct packet_reader reader;
196 connect_setup(transport, for_push);
198 packet_reader_init(&reader, data->fd[0], NULL, 0,
200 PACKET_READ_CHOMP_NEWLINE |
201 PACKET_READ_GENTLE_ON_EOF);
202 switch (discover_version(&reader)) {
204 case protocol_v1:
205 case protocol_v0:
206 get_remote_heads(&reader, &refs,
207 for_push ? REF_NORMAL : 0,
208 &data->extra_have,
209 &data->shallow);
210 break;
211 case protocol_unknown_version:
212 BUG("unknown protocol version");
213 }
214 data->got_remote_heads = 1;
215 return refs;
217}
218static int fetch_refs_via_pack(struct transport *transport,
220 int nr_heads, struct ref **to_fetch)
221{
222 int ret = 0;
223 struct git_transport_data *data = transport->data;
224 struct ref *refs;
225 char *dest = xstrdup(transport->url);
226 struct fetch_pack_args args;
227 struct ref *refs_tmp = NULL;
228 memset(&args, 0, sizeof(args));
230 args.uploadpack = data->options.uploadpack;
231 args.keep_pack = data->options.keep;
232 args.lock_pack = 1;
233 args.use_thin_pack = data->options.thin;
234 args.include_tag = data->options.followtags;
235 args.verbose = (transport->verbose > 1);
236 args.quiet = (transport->verbose < 0);
237 args.no_progress = !transport->progress;
238 args.depth = data->options.depth;
239 args.deepen_since = data->options.deepen_since;
240 args.deepen_not = data->options.deepen_not;
241 args.deepen_relative = data->options.deepen_relative;
242 args.check_self_contained_and_connected =
243 data->options.check_self_contained_and_connected;
244 args.cloning = transport->cloning;
245 args.update_shallow = data->options.update_shallow;
246 if (!data->got_remote_heads)
248 refs_tmp = get_refs_via_connect(transport, 0);
249 refs = fetch_pack(&args, data->fd, data->conn,
251 refs_tmp ? refs_tmp : transport->remote_refs,
252 dest, to_fetch, nr_heads, &data->shallow,
253 &transport->pack_lockfile);
254 close(data->fd[0]);
255 close(data->fd[1]);
256 if (finish_connect(data->conn))
257 ret = -1;
258 data->conn = NULL;
259 data->got_remote_heads = 0;
260 data->options.self_contained_and_connected =
261 args.self_contained_and_connected;
262 if (refs == NULL)
264 ret = -1;
265 if (report_unmatched_refs(to_fetch, nr_heads))
266 ret = -1;
267 free_refs(refs_tmp);
269 free_refs(refs);
270 free(dest);
271 return ret;
272}
273static int push_had_errors(struct ref *ref)
275{
276 for (; ref; ref = ref->next) {
277 switch (ref->status) {
278 case REF_STATUS_NONE:
279 case REF_STATUS_UPTODATE:
280 case REF_STATUS_OK:
281 break;
282 default:
283 return 1;
284 }
285 }
286 return 0;
287}
288int transport_refs_pushed(struct ref *ref)
290{
291 for (; ref; ref = ref->next) {
292 switch(ref->status) {
293 case REF_STATUS_NONE:
294 case REF_STATUS_UPTODATE:
295 break;
296 default:
297 return 1;
298 }
299 }
300 return 0;
301}
302void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
304{
305 struct refspec rs;
306 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
308 return;
309 rs.src = ref->name;
311 rs.dst = NULL;
312 if (!remote_find_tracking(remote, &rs)) {
314 if (verbose)
315 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
316 if (ref->deletion) {
317 delete_ref(NULL, rs.dst, NULL, 0);
318 } else
319 update_ref("update by push", rs.dst, &ref->new_oid,
320 NULL, 0, 0);
321 free(rs.dst);
322 }
323}
324static void print_ref_status(char flag, const char *summary,
326 struct ref *to, struct ref *from, const char *msg,
327 int porcelain, int summary_width)
328{
329 if (porcelain) {
330 if (from)
331 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
332 else
333 fprintf(stdout, "%c\t:%s\t", flag, to->name);
334 if (msg)
335 fprintf(stdout, "%s (%s)\n", summary, msg);
336 else
337 fprintf(stdout, "%s\n", summary);
338 } else {
339 fprintf(stderr, " %c %-*s ", flag, summary_width, summary);
340 if (from)
341 fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
342 else
343 fputs(prettify_refname(to->name), stderr);
344 if (msg) {
345 fputs(" (", stderr);
346 fputs(msg, stderr);
347 fputc(')', stderr);
348 }
349 fputc('\n', stderr);
350 }
351}
352static void print_ok_ref_status(struct ref *ref, int porcelain, int summary_width)
354{
355 if (ref->deletion)
356 print_ref_status('-', "[deleted]", ref, NULL, NULL,
357 porcelain, summary_width);
358 else if (is_null_oid(&ref->old_oid))
359 print_ref_status('*',
360 (starts_with(ref->name, "refs/tags/") ? "[new tag]" :
361 "[new branch]"),
362 ref, ref->peer_ref, NULL, porcelain, summary_width);
363 else {
364 struct strbuf quickref = STRBUF_INIT;
365 char type;
366 const char *msg;
367 strbuf_add_unique_abbrev(&quickref, ref->old_oid.hash,
369 DEFAULT_ABBREV);
370 if (ref->forced_update) {
371 strbuf_addstr(&quickref, "...");
372 type = '+';
373 msg = "forced update";
374 } else {
375 strbuf_addstr(&quickref, "..");
376 type = ' ';
377 msg = NULL;
378 }
379 strbuf_add_unique_abbrev(&quickref, ref->new_oid.hash,
380 DEFAULT_ABBREV);
381 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
383 porcelain, summary_width);
384 strbuf_release(&quickref);
385 }
386}
387static int print_one_push_status(struct ref *ref, const char *dest, int count,
389 int porcelain, int summary_width)
390{
391 if (!count) {
392 char *url = transport_anonymize_url(dest);
393 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
394 free(url);
395 }
396 switch(ref->status) {
398 case REF_STATUS_NONE:
399 print_ref_status('X', "[no match]", ref, NULL, NULL,
400 porcelain, summary_width);
401 break;
402 case REF_STATUS_REJECT_NODELETE:
403 print_ref_status('!', "[rejected]", ref, NULL,
404 "remote does not support deleting refs",
405 porcelain, summary_width);
406 break;
407 case REF_STATUS_UPTODATE:
408 print_ref_status('=', "[up to date]", ref,
409 ref->peer_ref, NULL, porcelain, summary_width);
410 break;
411 case REF_STATUS_REJECT_NONFASTFORWARD:
412 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
413 "non-fast-forward", porcelain, summary_width);
414 break;
415 case REF_STATUS_REJECT_ALREADY_EXISTS:
416 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
417 "already exists", porcelain, summary_width);
418 break;
419 case REF_STATUS_REJECT_FETCH_FIRST:
420 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
421 "fetch first", porcelain, summary_width);
422 break;
423 case REF_STATUS_REJECT_NEEDS_FORCE:
424 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
425 "needs force", porcelain, summary_width);
426 break;
427 case REF_STATUS_REJECT_STALE:
428 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
429 "stale info", porcelain, summary_width);
430 break;
431 case REF_STATUS_REJECT_SHALLOW:
432 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
433 "new shallow roots not allowed",
434 porcelain, summary_width);
435 break;
436 case REF_STATUS_REMOTE_REJECT:
437 print_ref_status('!', "[remote rejected]", ref,
438 ref->deletion ? NULL : ref->peer_ref,
439 ref->remote_status, porcelain, summary_width);
440 break;
441 case REF_STATUS_EXPECTING_REPORT:
442 print_ref_status('!', "[remote failure]", ref,
443 ref->deletion ? NULL : ref->peer_ref,
444 "remote failed to report status",
445 porcelain, summary_width);
446 break;
447 case REF_STATUS_ATOMIC_PUSH_FAILED:
448 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
449 "atomic push failed", porcelain, summary_width);
450 break;
451 case REF_STATUS_OK:
452 print_ok_ref_status(ref, porcelain, summary_width);
453 break;
454 }
455 return 1;
457}
458static int measure_abbrev(const struct object_id *oid, int sofar)
460{
461 char hex[GIT_MAX_HEXSZ + 1];
462 int w = find_unique_abbrev_r(hex, oid->hash, DEFAULT_ABBREV);
463 return (w < sofar) ? sofar : w;
465}
466int transport_summary_width(const struct ref *refs)
468{
469 int maxw = -1;
470 for (; refs; refs = refs->next) {
472 maxw = measure_abbrev(&refs->old_oid, maxw);
473 maxw = measure_abbrev(&refs->new_oid, maxw);
474 }
475 if (maxw < 0)
476 maxw = FALLBACK_DEFAULT_ABBREV;
477 return (2 * maxw + 3);
478}
479void transport_print_push_status(const char *dest, struct ref *refs,
481 int verbose, int porcelain, unsigned int *reject_reasons)
482{
483 struct ref *ref;
484 int n = 0;
485 char *head;
486 int summary_width = transport_summary_width(refs);
487 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
489 if (verbose) {
491 for (ref = refs; ref; ref = ref->next)
492 if (ref->status == REF_STATUS_UPTODATE)
493 n += print_one_push_status(ref, dest, n,
494 porcelain, summary_width);
495 }
496 for (ref = refs; ref; ref = ref->next)
498 if (ref->status == REF_STATUS_OK)
499 n += print_one_push_status(ref, dest, n,
500 porcelain, summary_width);
501 *reject_reasons = 0;
503 for (ref = refs; ref; ref = ref->next) {
504 if (ref->status != REF_STATUS_NONE &&
505 ref->status != REF_STATUS_UPTODATE &&
506 ref->status != REF_STATUS_OK)
507 n += print_one_push_status(ref, dest, n,
508 porcelain, summary_width);
509 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
510 if (head != NULL && !strcmp(head, ref->name))
511 *reject_reasons |= REJECT_NON_FF_HEAD;
512 else
513 *reject_reasons |= REJECT_NON_FF_OTHER;
514 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
515 *reject_reasons |= REJECT_ALREADY_EXISTS;
516 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
517 *reject_reasons |= REJECT_FETCH_FIRST;
518 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
519 *reject_reasons |= REJECT_NEEDS_FORCE;
520 }
521 }
522 free(head);
523}
524void transport_verify_remote_names(int nr_heads, const char **heads)
526{
527 int i;
528 for (i = 0; i < nr_heads; i++) {
530 const char *local = heads[i];
531 const char *remote = strrchr(heads[i], ':');
532 if (*local == '+')
534 local++;
535 /* A matching refspec is okay. */
537 if (remote == local && remote[1] == '\0')
538 continue;
539 remote = remote ? (remote + 1) : local;
541 if (check_refname_format(remote,
542 REFNAME_ALLOW_ONELEVEL|REFNAME_REFSPEC_PATTERN))
543 die("remote part of refspec is not a valid name in %s",
544 heads[i]);
545 }
546}
547static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
549{
550 struct git_transport_data *data = transport->data;
551 struct send_pack_args args;
552 int ret;
553 if (!data->got_remote_heads)
555 get_refs_via_connect(transport, 1);
556 memset(&args, 0, sizeof(args));
558 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
559 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
560 args.use_thin_pack = data->options.thin;
561 args.verbose = (transport->verbose > 0);
562 args.quiet = (transport->verbose < 0);
563 args.progress = transport->progress;
564 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
565 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
566 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
567 args.push_options = transport->push_options;
568 args.url = transport->url;
569 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
571 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
572 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
573 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
574 else
575 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
576 ret = send_pack(&args, data->fd, data->conn, remote_refs,
578 &data->extra_have);
579 close(data->fd[1]);
581 close(data->fd[0]);
582 ret |= finish_connect(data->conn);
583 data->conn = NULL;
584 data->got_remote_heads = 0;
585 return ret;
587}
588static int connect_git(struct transport *transport, const char *name,
590 const char *executable, int fd[2])
591{
592 struct git_transport_data *data = transport->data;
593 data->conn = git_connect(data->fd, transport->url,
594 executable, 0);
595 fd[0] = data->fd[0];
596 fd[1] = data->fd[1];
597 return 0;
598}
599static int disconnect_git(struct transport *transport)
601{
602 struct git_transport_data *data = transport->data;
603 if (data->conn) {
604 if (data->got_remote_heads)
605 packet_flush(data->fd[1]);
606 close(data->fd[0]);
607 close(data->fd[1]);
608 finish_connect(data->conn);
609 }
610 free(data);
612 return 0;
613}
614static struct transport_vtable taken_over_vtable = {
616 NULL,
617 get_refs_via_connect,
618 fetch_refs_via_pack,
619 git_transport_push,
620 NULL,
621 disconnect_git
622};
623void transport_take_over(struct transport *transport,
625 struct child_process *child)
626{
627 struct git_transport_data *data;
628 if (!transport->smart_options)
630 die("BUG: taking over transport requires non-NULL "
631 "smart_options field.");
632 data = xcalloc(1, sizeof(*data));
634 data->options = *transport->smart_options;
635 data->conn = child;
636 data->fd[0] = data->conn->out;
637 data->fd[1] = data->conn->in;
638 data->got_remote_heads = 0;
639 transport->data = data;
640 transport->vtable = &taken_over_vtable;
642 transport->smart_options = &(data->options);
643 transport->cannot_reuse = 1;
645}
646static int is_file(const char *url)
648{
649 struct stat buf;
650 if (stat(url, &buf))
651 return 0;
652 return S_ISREG(buf.st_mode);
653}
654static int external_specification_len(const char *url)
656{
657 return strchr(url, ':') - url;
658}
659static const struct string_list *protocol_whitelist(void)
661{
662 static int enabled = -1;
663 static struct string_list allowed = STRING_LIST_INIT_DUP;
664 if (enabled < 0) {
666 const char *v = getenv("GIT_ALLOW_PROTOCOL");
667 if (v) {
668 string_list_split(&allowed, v, ':', -1);
669 string_list_sort(&allowed);
670 enabled = 1;
671 } else {
672 enabled = 0;
673 }
674 }
675 return enabled ? &allowed : NULL;
677}
678enum protocol_allow_config {
680 PROTOCOL_ALLOW_NEVER = 0,
681 PROTOCOL_ALLOW_USER_ONLY,
682 PROTOCOL_ALLOW_ALWAYS
683};
684static enum protocol_allow_config parse_protocol_config(const char *key,
686 const char *value)
687{
688 if (!strcasecmp(value, "always"))
689 return PROTOCOL_ALLOW_ALWAYS;
690 else if (!strcasecmp(value, "never"))
691 return PROTOCOL_ALLOW_NEVER;
692 else if (!strcasecmp(value, "user"))
693 return PROTOCOL_ALLOW_USER_ONLY;
694 die("unknown value for config '%s': %s", key, value);
696}
697static enum protocol_allow_config get_protocol_config(const char *type)
699{
700 char *key = xstrfmt("protocol.%s.allow", type);
701 char *value;
702 /* first check the per-protocol config */
704 if (!git_config_get_string(key, &value)) {
705 enum protocol_allow_config ret =
706 parse_protocol_config(key, value);
707 free(key);
708 free(value);
709 return ret;
710 }
711 free(key);
712 /* if defined, fallback to user-defined default for unknown protocols */
714 if (!git_config_get_string("protocol.allow", &value)) {
715 enum protocol_allow_config ret =
716 parse_protocol_config("protocol.allow", value);
717 free(value);
718 return ret;
719 }
720 /* fallback to built-in defaults */
722 /* known safe */
723 if (!strcmp(type, "http") ||
724 !strcmp(type, "https") ||
725 !strcmp(type, "git") ||
726 !strcmp(type, "ssh") ||
727 !strcmp(type, "file"))
728 return PROTOCOL_ALLOW_ALWAYS;
729 /* known scary; err on the side of caution */
731 if (!strcmp(type, "ext"))
732 return PROTOCOL_ALLOW_NEVER;
733 /* unknown; by default let them be used only directly by the user */
735 return PROTOCOL_ALLOW_USER_ONLY;
736}
737int is_transport_allowed(const char *type, int from_user)
739{
740 const struct string_list *whitelist = protocol_whitelist();
741 if (whitelist)
742 return string_list_has_string(whitelist, type);
743 switch (get_protocol_config(type)) {
745 case PROTOCOL_ALLOW_ALWAYS:
746 return 1;
747 case PROTOCOL_ALLOW_NEVER:
748 return 0;
749 case PROTOCOL_ALLOW_USER_ONLY:
750 if (from_user < 0)
751 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
752 return from_user;
753 }
754 die("BUG: invalid protocol_allow_config type");
756}
757void transport_check_allowed(const char *type)
759{
760 if (!is_transport_allowed(type, -1))
761 die("transport '%s' not allowed", type);
762}
763static struct transport_vtable bundle_vtable = {
765 NULL,
766 get_refs_from_bundle,
767 fetch_refs_from_bundle,
768 NULL,
769 NULL,
770 close_bundle
771};
772static struct transport_vtable builtin_smart_vtable = {
774 NULL,
775 get_refs_via_connect,
776 fetch_refs_via_pack,
777 git_transport_push,
778 connect_git,
779 disconnect_git
780};
781struct transport *transport_get(struct remote *remote, const char *url)
783{
784 const char *helper;
785 struct transport *ret = xcalloc(1, sizeof(*ret));
786 ret->progress = isatty(2);
788 if (!remote)
790 die("No remote provided to transport_get()");
791 ret->got_remote_refs = 0;
793 ret->remote = remote;
794 helper = remote->foreign_vcs;
795 if (!url && remote->url)
797 url = remote->url[0];
798 ret->url = url;
799 /* maybe it is a foreign URL? */
801 if (url) {
802 const char *p = url;
803 while (is_urlschemechar(p == url, *p))
805 p++;
806 if (starts_with(p, "::"))
807 helper = xstrndup(url, p - url);
808 }
809 if (helper) {
811 transport_helper_init(ret, helper);
812 } else if (starts_with(url, "rsync:")) {
813 die("git-over-rsync is no longer supported");
814 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
815 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
816 transport_check_allowed("file");
817 ret->data = data;
818 ret->vtable = &bundle_vtable;
819 ret->smart_options = NULL;
820 } else if (!is_url(url)
821 || starts_with(url, "file://")
822 || starts_with(url, "git://")
823 || starts_with(url, "ssh://")
824 || starts_with(url, "git+ssh://") /* deprecated - do not use */
825 || starts_with(url, "ssh+git://") /* deprecated - do not use */
826 ) {
827 /*
828 * These are builtin smart transports; "allowed" transports
829 * will be checked individually in git_connect.
830 */
831 struct git_transport_data *data = xcalloc(1, sizeof(*data));
832 ret->data = data;
833 ret->vtable = &builtin_smart_vtable;
834 ret->smart_options = &(data->options);
835 data->conn = NULL;
837 data->got_remote_heads = 0;
838 } else {
839 /* Unknown protocol in URL. Pass to external handler. */
840 int len = external_specification_len(url);
841 char *handler = xmemdupz(url, len);
842 transport_helper_init(ret, handler);
843 }
844 if (ret->smart_options) {
846 ret->smart_options->thin = 1;
847 ret->smart_options->uploadpack = "git-upload-pack";
848 if (remote->uploadpack)
849 ret->smart_options->uploadpack = remote->uploadpack;
850 ret->smart_options->receivepack = "git-receive-pack";
851 if (remote->receivepack)
852 ret->smart_options->receivepack = remote->receivepack;
853 }
854 return ret;
856}
857int transport_set_option(struct transport *transport,
859 const char *name, const char *value)
860{
861 int git_reports = 1, protocol_reports = 1;
862 if (transport->smart_options)
864 git_reports = set_git_option(transport->smart_options,
865 name, value);
866 if (transport->vtable->set_option)
868 protocol_reports = transport->vtable->set_option(transport,
869 name, value);
870 /* If either report is 0, report 0 (success). */
872 if (!git_reports || !protocol_reports)
873 return 0;
874 /* If either reports -1 (invalid value), report -1. */
875 if ((git_reports == -1) || (protocol_reports == -1))
876 return -1;
877 /* Otherwise if both report unknown, report unknown. */
878 return 1;
879}
880void transport_set_verbosity(struct transport *transport, int verbosity,
882 int force_progress)
883{
884 if (verbosity >= 1)
885 transport->verbose = verbosity <= 3 ? verbosity : 3;
886 if (verbosity < 0)
887 transport->verbose = -1;
888 /**
890 * Rules used to determine whether to report progress (processing aborts
891 * when a rule is satisfied):
892 *
893 * . Report progress, if force_progress is 1 (ie. --progress).
894 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
895 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
896 * . Report progress if isatty(2) is 1.
897 **/
898 if (force_progress >= 0)
899 transport->progress = !!force_progress;
900 else
901 transport->progress = verbosity >= 0 && isatty(2);
902}
903static void die_with_unpushed_submodules(struct string_list *needs_pushing)
905{
906 int i;
907 fprintf(stderr, _("The following submodule paths contain changes that can\n"
909 "not be found on any remote:\n"));
910 for (i = 0; i < needs_pushing->nr; i++)
911 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
912 fprintf(stderr, _("\nPlease try\n\n"
913 " git push --recurse-submodules=on-demand\n\n"
914 "or cd to the path and use\n\n"
915 " git push\n\n"
916 "to push them to a remote.\n\n"));
917 string_list_clear(needs_pushing, 0);
919 die(_("Aborting."));
921}
922static int run_pre_push_hook(struct transport *transport,
924 struct ref *remote_refs)
925{
926 int ret = 0, x;
927 struct ref *r;
928 struct child_process proc = CHILD_PROCESS_INIT;
929 struct strbuf buf;
930 const char *argv[4];
931 if (!(argv[0] = find_hook("pre-push")))
933 return 0;
934 argv[1] = transport->remote->name;
936 argv[2] = transport->url;
937 argv[3] = NULL;
938 proc.argv = argv;
940 proc.in = -1;
941 if (start_command(&proc)) {
943 finish_command(&proc);
944 return -1;
945 }
946 sigchain_push(SIGPIPE, SIG_IGN);
948 strbuf_init(&buf, 256);
950 for (r = remote_refs; r; r = r->next) {
952 if (!r->peer_ref) continue;
953 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
954 if (r->status == REF_STATUS_REJECT_STALE) continue;
955 if (r->status == REF_STATUS_UPTODATE) continue;
956 strbuf_reset(&buf);
958 strbuf_addf( &buf, "%s %s %s %s\n",
959 r->peer_ref->name, oid_to_hex(&r->new_oid),
960 r->name, oid_to_hex(&r->old_oid));
961 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
963 /* We do not mind if a hook does not read all refs. */
964 if (errno != EPIPE)
965 ret = -1;
966 break;
967 }
968 }
969 strbuf_release(&buf);
971 x = close(proc.in);
973 if (!ret)
974 ret = x;
975 sigchain_pop(SIGPIPE);
977 x = finish_command(&proc);
979 if (!ret)
980 ret = x;
981 return ret;
983}
984int transport_push(struct transport *transport,
986 int refspec_nr, const char **refspec, int flags,
987 unsigned int *reject_reasons)
988{
989 *reject_reasons = 0;
990 transport_verify_remote_names(refspec_nr, refspec);
991 if (transport->vtable->push_refs) {
993 struct ref *remote_refs;
994 struct ref *local_refs = get_local_heads();
995 int match_flags = MATCH_REFS_NONE;
996 int verbose = (transport->verbose > 0);
997 int quiet = (transport->verbose < 0);
998 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
999 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1000 int push_ret, ret, err;
1001 if (check_push_refs(local_refs, refspec_nr, refspec) < 0)
1003 return -1;
1004 remote_refs = transport->vtable->get_refs_list(transport, 1);
1006 if (flags & TRANSPORT_PUSH_ALL)
1008 match_flags |= MATCH_REFS_ALL;
1009 if (flags & TRANSPORT_PUSH_MIRROR)
1010 match_flags |= MATCH_REFS_MIRROR;
1011 if (flags & TRANSPORT_PUSH_PRUNE)
1012 match_flags |= MATCH_REFS_PRUNE;
1013 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1014 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1015 if (match_push_refs(local_refs, &remote_refs,
1017 refspec_nr, refspec, match_flags)) {
1018 return -1;
1019 }
1020 if (transport->smart_options &&
1022 transport->smart_options->cas &&
1023 !is_empty_cas(transport->smart_options->cas))
1024 apply_push_cas(transport->smart_options->cas,
1025 transport->remote, remote_refs);
1026 set_ref_status_for_push(remote_refs,
1028 flags & TRANSPORT_PUSH_MIRROR,
1029 flags & TRANSPORT_PUSH_FORCE);
1030 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1032 if (run_pre_push_hook(transport, remote_refs))
1033 return -1;
1034 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1036 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1037 !is_bare_repository()) {
1038 struct ref *ref = remote_refs;
1039 struct oid_array commits = OID_ARRAY_INIT;
1040 for (; ref; ref = ref->next)
1042 if (!is_null_oid(&ref->new_oid))
1043 oid_array_append(&commits,
1044 &ref->new_oid);
1045 if (!push_unpushed_submodules(&commits,
1047 transport->remote,
1048 refspec, refspec_nr,
1049 transport->push_options,
1050 pretend)) {
1051 oid_array_clear(&commits);
1052 die("Failed to push all needed submodules!");
1053 }
1054 oid_array_clear(&commits);
1055 }
1056 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1058 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1059 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1060 !pretend)) && !is_bare_repository()) {
1061 struct ref *ref = remote_refs;
1062 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1063 struct oid_array commits = OID_ARRAY_INIT;
1064 for (; ref; ref = ref->next)
1066 if (!is_null_oid(&ref->new_oid))
1067 oid_array_append(&commits,
1068 &ref->new_oid);
1069 if (find_unpushed_submodules(&commits, transport->remote->name,
1071 &needs_pushing)) {
1072 oid_array_clear(&commits);
1073 die_with_unpushed_submodules(&needs_pushing);
1074 }
1075 string_list_clear(&needs_pushing, 0);
1076 oid_array_clear(&commits);
1077 }
1078 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY))
1080 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1081 else
1082 push_ret = 0;
1083 err = push_had_errors(remote_refs);
1084 ret = push_ret | err;
1085 if (!quiet || err)
1087 transport_print_push_status(transport->url, remote_refs,
1088 verbose | porcelain, porcelain,
1089 reject_reasons);
1090 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1092 set_upstreams(transport, remote_refs, pretend);
1093 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1095 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1096 struct ref *ref;
1097 for (ref = remote_refs; ref; ref = ref->next)
1098 transport_update_tracking_ref(transport->remote, ref, verbose);
1099 }
1100 if (porcelain && !push_ret)
1102 puts("Done");
1103 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1104 fprintf(stderr, "Everything up-to-date\n");
1105 return ret;
1107 }
1108 return 1;
1109}
1110const struct ref *transport_get_remote_refs(struct transport *transport)
1112{
1113 if (!transport->got_remote_refs) {
1114 transport->remote_refs = transport->vtable->get_refs_list(transport, 0);
1115 transport->got_remote_refs = 1;
1116 }
1117 return transport->remote_refs;
1119}
1120int transport_fetch_refs(struct transport *transport, struct ref *refs)
1122{
1123 int rc;
1124 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1125 struct ref **heads = NULL;
1126 struct ref *rm;
1127 for (rm = refs; rm; rm = rm->next) {
1129 nr_refs++;
1130 if (rm->peer_ref &&
1131 !is_null_oid(&rm->old_oid) &&
1132 !oidcmp(&rm->peer_ref->old_oid, &rm->old_oid))
1133 continue;
1134 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1135 heads[nr_heads++] = rm;
1136 }
1137 if (!nr_heads) {
1139 /*
1140 * When deepening of a shallow repository is requested,
1141 * then local and remote refs are likely to still be equal.
1142 * Just feed them all to the fetch method in that case.
1143 * This condition shouldn't be met in a non-deepening fetch
1144 * (see builtin/fetch.c:quickfetch()).
1145 */
1146 ALLOC_ARRAY(heads, nr_refs);
1147 for (rm = refs; rm; rm = rm->next)
1148 heads[nr_heads++] = rm;
1149 }
1150 rc = transport->vtable->fetch(transport, nr_heads, heads);
1152 free(heads);
1154 return rc;
1155}
1156void transport_unlock_pack(struct transport *transport)
1158{
1159 if (transport->pack_lockfile) {
1160 unlink_or_warn(transport->pack_lockfile);
1161 FREE_AND_NULL(transport->pack_lockfile);
1162 }
1163}
1164int transport_connect(struct transport *transport, const char *name,
1166 const char *exec, int fd[2])
1167{
1168 if (transport->vtable->connect)
1169 return transport->vtable->connect(transport, name, exec, fd);
1170 else
1171 die("Operation not supported by protocol");
1172}
1173int transport_disconnect(struct transport *transport)
1175{
1176 int ret = 0;
1177 if (transport->vtable->disconnect)
1178 ret = transport->vtable->disconnect(transport);
1179 free(transport);
1180 return ret;
1181}
1182/*
1184 * Strip username (and password) from a URL and return
1185 * it in a newly allocated string.
1186 */
1187char *transport_anonymize_url(const char *url)
1188{
1189 char *scheme_prefix, *anon_part;
1190 size_t anon_len, prefix_len = 0;
1191 anon_part = strchr(url, '@');
1193 if (url_is_local_not_ssh(url) || !anon_part)
1194 goto literal_copy;
1195 anon_len = strlen(++anon_part);
1197 scheme_prefix = strstr(url, "://");
1198 if (!scheme_prefix) {
1199 if (!strchr(anon_part, ':'))
1200 /* cannot be "me@there:/path/name" */
1201 goto literal_copy;
1202 } else {
1203 const char *cp;
1204 /* make sure scheme is reasonable */
1205 for (cp = url; cp < scheme_prefix; cp++) {
1206 switch (*cp) {
1207 /* RFC 1738 2.1 */
1208 case '+': case '.': case '-':
1209 break; /* ok */
1210 default:
1211 if (isalnum(*cp))
1212 break;
1213 /* it isn't */
1214 goto literal_copy;
1215 }
1216 }
1217 /* @ past the first slash does not count */
1218 cp = strchr(scheme_prefix + 3, '/');
1219 if (cp && cp < anon_part)
1220 goto literal_copy;
1221 prefix_len = scheme_prefix - url + 3;
1222 }
1223 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1224 (int)anon_len, anon_part);
1225literal_copy:
1226 return xstrdup(url);
1227}
1228static void read_alternate_refs(const char *path,
1230 alternate_ref_fn *cb,
1231 void *data)
1232{
1233 struct child_process cmd = CHILD_PROCESS_INIT;
1234 struct strbuf line = STRBUF_INIT;
1235 FILE *fh;
1236 cmd.git_cmd = 1;
1238 argv_array_pushf(&cmd.args, "--git-dir=%s", path);
1239 argv_array_push(&cmd.args, "for-each-ref");
1240 argv_array_push(&cmd.args, "--format=%(objectname) %(refname)");
1241 cmd.env = local_repo_env;
1242 cmd.out = -1;
1243 if (start_command(&cmd))
1245 return;
1246 fh = xfdopen(cmd.out, "r");
1248 while (strbuf_getline_lf(&line, fh) != EOF) {
1249 struct object_id oid;
1250 if (get_oid_hex(line.buf, &oid) ||
1252 line.buf[GIT_SHA1_HEXSZ] != ' ') {
1253 warning("invalid line while parsing alternate refs: %s",
1254 line.buf);
1255 break;
1256 }
1257 cb(line.buf + GIT_SHA1_HEXSZ + 1, &oid, data);
1259 }
1260 fclose(fh);
1262 finish_command(&cmd);
1263}
1264struct alternate_refs_data {
1266 alternate_ref_fn *fn;
1267 void *data;
1268};
1269static int refs_from_alternate_cb(struct alternate_object_database *e,
1271 void *data)
1272{
1273 struct strbuf path = STRBUF_INIT;
1274 size_t base_len;
1275 struct alternate_refs_data *cb = data;
1276 if (!strbuf_realpath(&path, e->path, 0))
1278 goto out;
1279 if (!strbuf_strip_suffix(&path, "/objects"))
1280 goto out;
1281 base_len = path.len;
1282 /* Is this a git repository with refs? */
1284 strbuf_addstr(&path, "/refs");
1285 if (!is_directory(path.buf))
1286 goto out;
1287 strbuf_setlen(&path, base_len);
1288 read_alternate_refs(path.buf, cb->fn, cb->data);
1290out:
1292 strbuf_release(&path);
1293 return 0;
1294}
1295void for_each_alternate_ref(alternate_ref_fn fn, void *data)
1297{
1298 struct alternate_refs_data cb;
1299 cb.fn = fn;
1300 cb.data = data;
1301 foreach_alt_odb(refs_from_alternate_cb, &cb);
1302}