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attr: fix out-of-bounds write when parsing huge number of attributes
[git/debian.git] / transport.c
blobd2e3a90de16651e7af8e568d5741f6d59fccd40d
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
26 static int transport_use_color = -1;
27 static char transport_colors[][COLOR_MAXLEN] = {
28 GIT_COLOR_RESET,
29 GIT_COLOR_RED /* REJECTED */
30 };
31
32 enum color_transport {
33 TRANSPORT_COLOR_RESET = 0,
34 TRANSPORT_COLOR_REJECTED = 1
35 };
36
37 static 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
68 static 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
75 static 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
122 struct bundle_transport_data {
123 int fd;
124 struct bundle_header header;
125 unsigned get_refs_from_bundle_called : 1;
126 };
127
128 static struct ref *get_refs_from_bundle(struct transport *transport,
129 int for_push,
130 const struct strvec *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
147 transport->hash_algo = data->header.hash_algo;
148
149 for (i = 0; i < data->header.references.nr; i++) {
150 struct ref_list_entry *e = data->header.references.list + i;
151 struct ref *ref = alloc_ref(e->name);
152 oidcpy(&ref->old_oid, &e->oid);
153 ref->next = result;
154 result = ref;
155 }
156 return result;
157 }
158
159 static int fetch_refs_from_bundle(struct transport *transport,
160 int nr_heads, struct ref **to_fetch)
161 {
162 struct bundle_transport_data *data = transport->data;
163 int ret;
164
165 if (!data->get_refs_from_bundle_called)
166 get_refs_from_bundle(transport, 0, NULL);
167 ret = unbundle(the_repository, &data->header, data->fd,
168 transport->progress ? BUNDLE_VERBOSE : 0);
169 transport->hash_algo = data->header.hash_algo;
170 return ret;
171 }
172
173 static int close_bundle(struct transport *transport)
174 {
175 struct bundle_transport_data *data = transport->data;
176 if (data->fd > 0)
177 close(data->fd);
178 free(data);
179 return 0;
180 }
181
182 struct git_transport_data {
183 struct git_transport_options options;
184 struct child_process *conn;
185 int fd[2];
186 unsigned got_remote_heads : 1;
187 enum protocol_version version;
188 struct oid_array extra_have;
189 struct oid_array shallow;
190 };
191
192 static int set_git_option(struct git_transport_options *opts,
193 const char *name, const char *value)
194 {
195 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
196 opts->uploadpack = value;
197 return 0;
198 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
199 opts->receivepack = value;
200 return 0;
201 } else if (!strcmp(name, TRANS_OPT_THIN)) {
202 opts->thin = !!value;
203 return 0;
204 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
205 opts->followtags = !!value;
206 return 0;
207 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
208 opts->keep = !!value;
209 return 0;
210 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
211 opts->update_shallow = !!value;
212 return 0;
213 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
214 if (!value)
215 opts->depth = 0;
216 else {
217 char *end;
218 opts->depth = strtol(value, &end, 0);
219 if (*end)
220 die(_("transport: invalid depth option '%s'"), value);
221 }
222 return 0;
223 } else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
224 opts->deepen_since = value;
225 return 0;
226 } else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
227 opts->deepen_not = (const struct string_list *)value;
228 return 0;
229 } else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
230 opts->deepen_relative = !!value;
231 return 0;
232 } else if (!strcmp(name, TRANS_OPT_FROM_PROMISOR)) {
233 opts->from_promisor = !!value;
234 return 0;
235 } else if (!strcmp(name, TRANS_OPT_LIST_OBJECTS_FILTER)) {
236 list_objects_filter_die_if_populated(&opts->filter_options);
237 parse_list_objects_filter(&opts->filter_options, value);
238 return 0;
239 }
240 return 1;
241 }
242
243 static int connect_setup(struct transport *transport, int for_push)
244 {
245 struct git_transport_data *data = transport->data;
246 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
247
248 if (data->conn)
249 return 0;
250
251 switch (transport->family) {
252 case TRANSPORT_FAMILY_ALL: break;
253 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
254 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
255 }
256
257 data->conn = git_connect(data->fd, transport->url,
258 for_push ? data->options.receivepack :
259 data->options.uploadpack,
260 flags);
261
262 return 0;
263 }
264
265 static void die_if_server_options(struct transport *transport)
266 {
267 if (!transport->server_options || !transport->server_options->nr)
268 return;
269 advise(_("see protocol.version in 'git help config' for more details"));
270 die(_("server options require protocol version 2 or later"));
271 }
272
273 /*
274 * Obtains the protocol version from the transport and writes it to
275 * transport->data->version, first connecting if not already connected.
276 *
277 * If the protocol version is one that allows skipping the listing of remote
278 * refs, and must_list_refs is 0, the listing of remote refs is skipped and
279 * this function returns NULL. Otherwise, this function returns the list of
280 * remote refs.
281 */
282 static struct ref *handshake(struct transport *transport, int for_push,
283 const struct strvec *ref_prefixes,
284 int must_list_refs)
285 {
286 struct git_transport_data *data = transport->data;
287 struct ref *refs = NULL;
288 struct packet_reader reader;
289 int sid_len;
290 const char *server_sid;
291
292 connect_setup(transport, for_push);
293
294 packet_reader_init(&reader, data->fd[0], NULL, 0,
295 PACKET_READ_CHOMP_NEWLINE |
296 PACKET_READ_GENTLE_ON_EOF |
297 PACKET_READ_DIE_ON_ERR_PACKET);
298
299 data->version = discover_version(&reader);
300 switch (data->version) {
301 case protocol_v2:
302 if (server_feature_v2("session-id", &server_sid))
303 trace2_data_string("transfer", NULL, "server-sid", server_sid);
304 if (must_list_refs)
305 get_remote_refs(data->fd[1], &reader, &refs, for_push,
306 ref_prefixes,
307 transport->server_options,
308 transport->stateless_rpc);
309 break;
310 case protocol_v1:
311 case protocol_v0:
312 die_if_server_options(transport);
313 get_remote_heads(&reader, &refs,
314 for_push ? REF_NORMAL : 0,
315 &data->extra_have,
316 &data->shallow);
317 server_sid = server_feature_value("session-id", &sid_len);
318 if (server_sid) {
319 char *sid = xstrndup(server_sid, sid_len);
320 trace2_data_string("transfer", NULL, "server-sid", sid);
321 free(sid);
322 }
323 break;
324 case protocol_unknown_version:
325 BUG("unknown protocol version");
326 }
327 data->got_remote_heads = 1;
328 transport->hash_algo = reader.hash_algo;
329
330 if (reader.line_peeked)
331 BUG("buffer must be empty at the end of handshake()");
332
333 return refs;
334 }
335
336 static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
337 const struct strvec *ref_prefixes)
338 {
339 return handshake(transport, for_push, ref_prefixes, 1);
340 }
341
342 static int fetch_refs_via_pack(struct transport *transport,
343 int nr_heads, struct ref **to_fetch)
344 {
345 int ret = 0;
346 struct git_transport_data *data = transport->data;
347 struct ref *refs = NULL;
348 struct fetch_pack_args args;
349 struct ref *refs_tmp = NULL;
350
351 memset(&args, 0, sizeof(args));
352 args.uploadpack = data->options.uploadpack;
353 args.keep_pack = data->options.keep;
354 args.lock_pack = 1;
355 args.use_thin_pack = data->options.thin;
356 args.include_tag = data->options.followtags;
357 args.verbose = (transport->verbose > 1);
358 args.quiet = (transport->verbose < 0);
359 args.no_progress = !transport->progress;
360 args.depth = data->options.depth;
361 args.deepen_since = data->options.deepen_since;
362 args.deepen_not = data->options.deepen_not;
363 args.deepen_relative = data->options.deepen_relative;
364 args.check_self_contained_and_connected =
365 data->options.check_self_contained_and_connected;
366 args.cloning = transport->cloning;
367 args.update_shallow = data->options.update_shallow;
368 args.from_promisor = data->options.from_promisor;
369 args.filter_options = data->options.filter_options;
370 args.stateless_rpc = transport->stateless_rpc;
371 args.server_options = transport->server_options;
372 args.negotiation_tips = data->options.negotiation_tips;
373
374 if (!data->got_remote_heads) {
375 int i;
376 int must_list_refs = 0;
377 for (i = 0; i < nr_heads; i++) {
378 if (!to_fetch[i]->exact_oid) {
379 must_list_refs = 1;
380 break;
381 }
382 }
383 refs_tmp = handshake(transport, 0, NULL, must_list_refs);
384 }
385
386 if (data->version == protocol_unknown_version)
387 BUG("unknown protocol version");
388 else if (data->version <= protocol_v1)
389 die_if_server_options(transport);
390
391 refs = fetch_pack(&args, data->fd,
392 refs_tmp ? refs_tmp : transport->remote_refs,
393 to_fetch, nr_heads, &data->shallow,
394 &transport->pack_lockfiles, data->version);
395
396 close(data->fd[0]);
397 close(data->fd[1]);
398 if (finish_connect(data->conn))
399 ret = -1;
400 data->conn = NULL;
401 data->got_remote_heads = 0;
402 data->options.self_contained_and_connected =
403 args.self_contained_and_connected;
404 data->options.connectivity_checked = args.connectivity_checked;
405
406 if (refs == NULL)
407 ret = -1;
408 if (report_unmatched_refs(to_fetch, nr_heads))
409 ret = -1;
410
411 free_refs(refs_tmp);
412 free_refs(refs);
413 return ret;
414 }
415
416 static int push_had_errors(struct ref *ref)
417 {
418 for (; ref; ref = ref->next) {
419 switch (ref->status) {
420 case REF_STATUS_NONE:
421 case REF_STATUS_UPTODATE:
422 case REF_STATUS_OK:
423 break;
424 default:
425 return 1;
426 }
427 }
428 return 0;
429 }
430
431 int transport_refs_pushed(struct ref *ref)
432 {
433 for (; ref; ref = ref->next) {
434 switch(ref->status) {
435 case REF_STATUS_NONE:
436 case REF_STATUS_UPTODATE:
437 break;
438 default:
439 return 1;
440 }
441 }
442 return 0;
443 }
444
445 static void update_one_tracking_ref(struct remote *remote, char *refname,
446 struct object_id *new_oid, int deletion,
447 int verbose)
448 {
449 struct refspec_item rs;
450
451 memset(&rs, 0, sizeof(rs));
452 rs.src = refname;
453 rs.dst = NULL;
454
455 if (!remote_find_tracking(remote, &rs)) {
456 if (verbose)
457 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
458 if (deletion)
459 delete_ref(NULL, rs.dst, NULL, 0);
460 else
461 update_ref("update by push", rs.dst, new_oid,
462 NULL, 0, 0);
463 free(rs.dst);
464 }
465 }
466
467 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
468 {
469 char *refname;
470 struct object_id *new_oid;
471 struct ref_push_report *report;
472
473 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
474 return;
475
476 report = ref->report;
477 if (!report)
478 update_one_tracking_ref(remote, ref->name, &ref->new_oid,
479 ref->deletion, verbose);
480 else
481 for (; report; report = report->next) {
482 refname = report->ref_name ? (char *)report->ref_name : ref->name;
483 new_oid = report->new_oid ? report->new_oid : &ref->new_oid;
484 update_one_tracking_ref(remote, refname, new_oid,
485 is_null_oid(new_oid), verbose);
486 }
487 }
488
489 static void print_ref_status(char flag, const char *summary,
490 struct ref *to, struct ref *from, const char *msg,
491 struct ref_push_report *report,
492 int porcelain, int summary_width)
493 {
494 const char *to_name;
495
496 if (report && report->ref_name)
497 to_name = report->ref_name;
498 else
499 to_name = to->name;
500
501 if (porcelain) {
502 if (from)
503 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to_name);
504 else
505 fprintf(stdout, "%c\t:%s\t", flag, to_name);
506 if (msg)
507 fprintf(stdout, "%s (%s)\n", summary, msg);
508 else
509 fprintf(stdout, "%s\n", summary);
510 } else {
511 const char *red = "", *reset = "";
512 if (push_had_errors(to)) {
513 red = transport_get_color(TRANSPORT_COLOR_REJECTED);
514 reset = transport_get_color(TRANSPORT_COLOR_RESET);
515 }
516 fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
517 summary, reset);
518 if (from)
519 fprintf(stderr, "%s -> %s",
520 prettify_refname(from->name),
521 prettify_refname(to_name));
522 else
523 fputs(prettify_refname(to_name), stderr);
524 if (msg) {
525 fputs(" (", stderr);
526 fputs(msg, stderr);
527 fputc(')', stderr);
528 }
529 fputc('\n', stderr);
530 }
531 }
532
533 static void print_ok_ref_status(struct ref *ref,
534 struct ref_push_report *report,
535 int porcelain, int summary_width)
536 {
537 struct object_id *old_oid;
538 struct object_id *new_oid;
539 const char *ref_name;
540 int forced_update;
541
542 if (report && report->old_oid)
543 old_oid = report->old_oid;
544 else
545 old_oid = &ref->old_oid;
546 if (report && report->new_oid)
547 new_oid = report->new_oid;
548 else
549 new_oid = &ref->new_oid;
550 if (report && report->forced_update)
551 forced_update = report->forced_update;
552 else
553 forced_update = ref->forced_update;
554 if (report && report->ref_name)
555 ref_name = report->ref_name;
556 else
557 ref_name = ref->name;
558
559 if (ref->deletion)
560 print_ref_status('-', "[deleted]", ref, NULL, NULL,
561 report, porcelain, summary_width);
562 else if (is_null_oid(old_oid))
563 print_ref_status('*',
564 (starts_with(ref_name, "refs/tags/")
565 ? "[new tag]"
566 : (starts_with(ref_name, "refs/heads/")
567 ? "[new branch]"
568 : "[new reference]")),
569 ref, ref->peer_ref, NULL,
570 report, porcelain, summary_width);
571 else {
572 struct strbuf quickref = STRBUF_INIT;
573 char type;
574 const char *msg;
575
576 strbuf_add_unique_abbrev(&quickref, old_oid,
577 DEFAULT_ABBREV);
578 if (forced_update) {
579 strbuf_addstr(&quickref, "...");
580 type = '+';
581 msg = "forced update";
582 } else {
583 strbuf_addstr(&quickref, "..");
584 type = ' ';
585 msg = NULL;
586 }
587 strbuf_add_unique_abbrev(&quickref, new_oid,
588 DEFAULT_ABBREV);
589
590 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
591 report, porcelain, summary_width);
592 strbuf_release(&quickref);
593 }
594 }
595
596 static int print_one_push_report(struct ref *ref, const char *dest, int count,
597 struct ref_push_report *report,
598 int porcelain, int summary_width)
599 {
600 if (!count) {
601 char *url = transport_anonymize_url(dest);
602 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
603 free(url);
604 }
605
606 switch(ref->status) {
607 case REF_STATUS_NONE:
608 print_ref_status('X', "[no match]", ref, NULL, NULL,
609 report, porcelain, summary_width);
610 break;
611 case REF_STATUS_REJECT_NODELETE:
612 print_ref_status('!', "[rejected]", ref, NULL,
613 "remote does not support deleting refs",
614 report, porcelain, summary_width);
615 break;
616 case REF_STATUS_UPTODATE:
617 print_ref_status('=', "[up to date]", ref,
618 ref->peer_ref, NULL,
619 report, porcelain, summary_width);
620 break;
621 case REF_STATUS_REJECT_NONFASTFORWARD:
622 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
623 "non-fast-forward",
624 report, porcelain, summary_width);
625 break;
626 case REF_STATUS_REJECT_ALREADY_EXISTS:
627 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
628 "already exists",
629 report, porcelain, summary_width);
630 break;
631 case REF_STATUS_REJECT_FETCH_FIRST:
632 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
633 "fetch first",
634 report, porcelain, summary_width);
635 break;
636 case REF_STATUS_REJECT_NEEDS_FORCE:
637 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
638 "needs force",
639 report, porcelain, summary_width);
640 break;
641 case REF_STATUS_REJECT_STALE:
642 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
643 "stale info",
644 report, porcelain, summary_width);
645 break;
646 case REF_STATUS_REJECT_REMOTE_UPDATED:
647 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
648 "remote ref updated since checkout",
649 report, porcelain, summary_width);
650 break;
651 case REF_STATUS_REJECT_SHALLOW:
652 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
653 "new shallow roots not allowed",
654 report, porcelain, summary_width);
655 break;
656 case REF_STATUS_REMOTE_REJECT:
657 print_ref_status('!', "[remote rejected]", ref,
658 ref->deletion ? NULL : ref->peer_ref,
659 ref->remote_status,
660 report, porcelain, summary_width);
661 break;
662 case REF_STATUS_EXPECTING_REPORT:
663 print_ref_status('!', "[remote failure]", ref,
664 ref->deletion ? NULL : ref->peer_ref,
665 "remote failed to report status",
666 report, porcelain, summary_width);
667 break;
668 case REF_STATUS_ATOMIC_PUSH_FAILED:
669 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
670 "atomic push failed",
671 report, porcelain, summary_width);
672 break;
673 case REF_STATUS_OK:
674 print_ok_ref_status(ref, report, porcelain, summary_width);
675 break;
676 }
677
678 return 1;
679 }
680
681 static int print_one_push_status(struct ref *ref, const char *dest, int count,
682 int porcelain, int summary_width)
683 {
684 struct ref_push_report *report;
685 int n = 0;
686
687 if (!ref->report)
688 return print_one_push_report(ref, dest, count,
689 NULL, porcelain, summary_width);
690
691 for (report = ref->report; report; report = report->next)
692 print_one_push_report(ref, dest, count + n++,
693 report, porcelain, summary_width);
694 return n;
695 }
696
697 static int measure_abbrev(const struct object_id *oid, int sofar)
698 {
699 char hex[GIT_MAX_HEXSZ + 1];
700 int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
701
702 return (w < sofar) ? sofar : w;
703 }
704
705 int transport_summary_width(const struct ref *refs)
706 {
707 int maxw = -1;
708
709 for (; refs; refs = refs->next) {
710 maxw = measure_abbrev(&refs->old_oid, maxw);
711 maxw = measure_abbrev(&refs->new_oid, maxw);
712 }
713 if (maxw < 0)
714 maxw = FALLBACK_DEFAULT_ABBREV;
715 return (2 * maxw + 3);
716 }
717
718 void transport_print_push_status(const char *dest, struct ref *refs,
719 int verbose, int porcelain, unsigned int *reject_reasons)
720 {
721 struct ref *ref;
722 int n = 0;
723 char *head;
724 int summary_width = transport_summary_width(refs);
725
726 if (transport_color_config() < 0)
727 warning(_("could not parse transport.color.* config"));
728
729 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
730
731 if (verbose) {
732 for (ref = refs; ref; ref = ref->next)
733 if (ref->status == REF_STATUS_UPTODATE)
734 n += print_one_push_status(ref, dest, n,
735 porcelain, summary_width);
736 }
737
738 for (ref = refs; ref; ref = ref->next)
739 if (ref->status == REF_STATUS_OK)
740 n += print_one_push_status(ref, dest, n,
741 porcelain, summary_width);
742
743 *reject_reasons = 0;
744 for (ref = refs; ref; ref = ref->next) {
745 if (ref->status != REF_STATUS_NONE &&
746 ref->status != REF_STATUS_UPTODATE &&
747 ref->status != REF_STATUS_OK)
748 n += print_one_push_status(ref, dest, n,
749 porcelain, summary_width);
750 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
751 if (head != NULL && !strcmp(head, ref->name))
752 *reject_reasons |= REJECT_NON_FF_HEAD;
753 else
754 *reject_reasons |= REJECT_NON_FF_OTHER;
755 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
756 *reject_reasons |= REJECT_ALREADY_EXISTS;
757 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
758 *reject_reasons |= REJECT_FETCH_FIRST;
759 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
760 *reject_reasons |= REJECT_NEEDS_FORCE;
761 } else if (ref->status == REF_STATUS_REJECT_REMOTE_UPDATED) {
762 *reject_reasons |= REJECT_REF_NEEDS_UPDATE;
763 }
764 }
765 free(head);
766 }
767
768 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
769 {
770 struct git_transport_data *data = transport->data;
771 struct send_pack_args args;
772 int ret = 0;
773
774 if (transport_color_config() < 0)
775 return -1;
776
777 if (!data->got_remote_heads)
778 get_refs_via_connect(transport, 1, NULL);
779
780 memset(&args, 0, sizeof(args));
781 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
782 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
783 args.use_thin_pack = data->options.thin;
784 args.verbose = (transport->verbose > 0);
785 args.quiet = (transport->verbose < 0);
786 args.progress = transport->progress;
787 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
788 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
789 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
790 args.push_options = transport->push_options;
791 args.url = transport->url;
792
793 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
794 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
795 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
796 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
797 else
798 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
799
800 switch (data->version) {
801 case protocol_v2:
802 die(_("support for protocol v2 not implemented yet"));
803 break;
804 case protocol_v1:
805 case protocol_v0:
806 ret = send_pack(&args, data->fd, data->conn, remote_refs,
807 &data->extra_have);
808 break;
809 case protocol_unknown_version:
810 BUG("unknown protocol version");
811 }
812
813 close(data->fd[1]);
814 close(data->fd[0]);
815 /*
816 * Atomic push may abort the connection early and close the pipe,
817 * which may cause an error for `finish_connect()`. Ignore this error
818 * for atomic git-push.
819 */
820 if (ret || args.atomic)
821 finish_connect(data->conn);
822 else
823 ret = finish_connect(data->conn);
824 data->conn = NULL;
825 data->got_remote_heads = 0;
826
827 return ret;
828 }
829
830 static int connect_git(struct transport *transport, const char *name,
831 const char *executable, int fd[2])
832 {
833 struct git_transport_data *data = transport->data;
834 data->conn = git_connect(data->fd, transport->url,
835 executable, 0);
836 fd[0] = data->fd[0];
837 fd[1] = data->fd[1];
838 return 0;
839 }
840
841 static int disconnect_git(struct transport *transport)
842 {
843 struct git_transport_data *data = transport->data;
844 if (data->conn) {
845 if (data->got_remote_heads && !transport->stateless_rpc)
846 packet_flush(data->fd[1]);
847 close(data->fd[0]);
848 close(data->fd[1]);
849 finish_connect(data->conn);
850 }
851
852 free(data);
853 return 0;
854 }
855
856 static struct transport_vtable taken_over_vtable = {
857 NULL,
858 get_refs_via_connect,
859 fetch_refs_via_pack,
860 git_transport_push,
861 NULL,
862 disconnect_git
863 };
864
865 void transport_take_over(struct transport *transport,
866 struct child_process *child)
867 {
868 struct git_transport_data *data;
869
870 if (!transport->smart_options)
871 BUG("taking over transport requires non-NULL "
872 "smart_options field.");
873
874 data = xcalloc(1, sizeof(*data));
875 data->options = *transport->smart_options;
876 data->conn = child;
877 data->fd[0] = data->conn->out;
878 data->fd[1] = data->conn->in;
879 data->got_remote_heads = 0;
880 transport->data = data;
881
882 transport->vtable = &taken_over_vtable;
883 transport->smart_options = &(data->options);
884
885 transport->cannot_reuse = 1;
886 }
887
888 static int is_file(const char *url)
889 {
890 struct stat buf;
891 if (stat(url, &buf))
892 return 0;
893 return S_ISREG(buf.st_mode);
894 }
895
896 static int external_specification_len(const char *url)
897 {
898 return strchr(url, ':') - url;
899 }
900
901 static const struct string_list *protocol_whitelist(void)
902 {
903 static int enabled = -1;
904 static struct string_list allowed = STRING_LIST_INIT_DUP;
905
906 if (enabled < 0) {
907 const char *v = getenv("GIT_ALLOW_PROTOCOL");
908 if (v) {
909 string_list_split(&allowed, v, ':', -1);
910 string_list_sort(&allowed);
911 enabled = 1;
912 } else {
913 enabled = 0;
914 }
915 }
916
917 return enabled ? &allowed : NULL;
918 }
919
920 enum protocol_allow_config {
921 PROTOCOL_ALLOW_NEVER = 0,
922 PROTOCOL_ALLOW_USER_ONLY,
923 PROTOCOL_ALLOW_ALWAYS
924 };
925
926 static enum protocol_allow_config parse_protocol_config(const char *key,
927 const char *value)
928 {
929 if (!strcasecmp(value, "always"))
930 return PROTOCOL_ALLOW_ALWAYS;
931 else if (!strcasecmp(value, "never"))
932 return PROTOCOL_ALLOW_NEVER;
933 else if (!strcasecmp(value, "user"))
934 return PROTOCOL_ALLOW_USER_ONLY;
935
936 die(_("unknown value for config '%s': %s"), key, value);
937 }
938
939 static enum protocol_allow_config get_protocol_config(const char *type)
940 {
941 char *key = xstrfmt("protocol.%s.allow", type);
942 char *value;
943
944 /* first check the per-protocol config */
945 if (!git_config_get_string(key, &value)) {
946 enum protocol_allow_config ret =
947 parse_protocol_config(key, value);
948 free(key);
949 free(value);
950 return ret;
951 }
952 free(key);
953
954 /* if defined, fallback to user-defined default for unknown protocols */
955 if (!git_config_get_string("protocol.allow", &value)) {
956 enum protocol_allow_config ret =
957 parse_protocol_config("protocol.allow", value);
958 free(value);
959 return ret;
960 }
961
962 /* fallback to built-in defaults */
963 /* known safe */
964 if (!strcmp(type, "http") ||
965 !strcmp(type, "https") ||
966 !strcmp(type, "git") ||
967 !strcmp(type, "ssh"))
968 return PROTOCOL_ALLOW_ALWAYS;
969
970 /* known scary; err on the side of caution */
971 if (!strcmp(type, "ext"))
972 return PROTOCOL_ALLOW_NEVER;
973
974 /* unknown; by default let them be used only directly by the user */
975 return PROTOCOL_ALLOW_USER_ONLY;
976 }
977
978 int is_transport_allowed(const char *type, int from_user)
979 {
980 const struct string_list *whitelist = protocol_whitelist();
981 if (whitelist)
982 return string_list_has_string(whitelist, type);
983
984 switch (get_protocol_config(type)) {
985 case PROTOCOL_ALLOW_ALWAYS:
986 return 1;
987 case PROTOCOL_ALLOW_NEVER:
988 return 0;
989 case PROTOCOL_ALLOW_USER_ONLY:
990 if (from_user < 0)
991 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
992 return from_user;
993 }
994
995 BUG("invalid protocol_allow_config type");
996 }
997
998 void transport_check_allowed(const char *type)
999 {
1000 if (!is_transport_allowed(type, -1))
1001 die(_("transport '%s' not allowed"), type);
1002 }
1003
1004 static struct transport_vtable bundle_vtable = {
1005 NULL,
1006 get_refs_from_bundle,
1007 fetch_refs_from_bundle,
1008 NULL,
1009 NULL,
1010 close_bundle
1011 };
1012
1013 static struct transport_vtable builtin_smart_vtable = {
1014 NULL,
1015 get_refs_via_connect,
1016 fetch_refs_via_pack,
1017 git_transport_push,
1018 connect_git,
1019 disconnect_git
1020 };
1021
1022 struct transport *transport_get(struct remote *remote, const char *url)
1023 {
1024 const char *helper;
1025 struct transport *ret = xcalloc(1, sizeof(*ret));
1026
1027 ret->progress = isatty(2);
1028 string_list_init(&ret->pack_lockfiles, 1);
1029
1030 if (!remote)
1031 BUG("No remote provided to transport_get()");
1032
1033 ret->got_remote_refs = 0;
1034 ret->remote = remote;
1035 helper = remote->foreign_vcs;
1036
1037 if (!url && remote->url)
1038 url = remote->url[0];
1039 ret->url = url;
1040
1041 /* maybe it is a foreign URL? */
1042 if (url) {
1043 const char *p = url;
1044
1045 while (is_urlschemechar(p == url, *p))
1046 p++;
1047 if (starts_with(p, "::"))
1048 helper = xstrndup(url, p - url);
1049 }
1050
1051 if (helper) {
1052 transport_helper_init(ret, helper);
1053 } else if (starts_with(url, "rsync:")) {
1054 die(_("git-over-rsync is no longer supported"));
1055 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
1056 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
1057 transport_check_allowed("file");
1058 ret->data = data;
1059 ret->vtable = &bundle_vtable;
1060 ret->smart_options = NULL;
1061 } else if (!is_url(url)
1062 || starts_with(url, "file://")
1063 || starts_with(url, "git://")
1064 || starts_with(url, "ssh://")
1065 || starts_with(url, "git+ssh://") /* deprecated - do not use */
1066 || starts_with(url, "ssh+git://") /* deprecated - do not use */
1067 ) {
1068 /*
1069 * These are builtin smart transports; "allowed" transports
1070 * will be checked individually in git_connect.
1071 */
1072 struct git_transport_data *data = xcalloc(1, sizeof(*data));
1073 ret->data = data;
1074 ret->vtable = &builtin_smart_vtable;
1075 ret->smart_options = &(data->options);
1076
1077 data->conn = NULL;
1078 data->got_remote_heads = 0;
1079 } else {
1080 /* Unknown protocol in URL. Pass to external handler. */
1081 int len = external_specification_len(url);
1082 char *handler = xmemdupz(url, len);
1083 transport_helper_init(ret, handler);
1084 }
1085
1086 if (ret->smart_options) {
1087 ret->smart_options->thin = 1;
1088 ret->smart_options->uploadpack = "git-upload-pack";
1089 if (remote->uploadpack)
1090 ret->smart_options->uploadpack = remote->uploadpack;
1091 ret->smart_options->receivepack = "git-receive-pack";
1092 if (remote->receivepack)
1093 ret->smart_options->receivepack = remote->receivepack;
1094 }
1095
1096 ret->hash_algo = &hash_algos[GIT_HASH_SHA1];
1097
1098 return ret;
1099 }
1100
1101 const struct git_hash_algo *transport_get_hash_algo(struct transport *transport)
1102 {
1103 return transport->hash_algo;
1104 }
1105
1106 int transport_set_option(struct transport *transport,
1107 const char *name, const char *value)
1108 {
1109 int git_reports = 1, protocol_reports = 1;
1110
1111 if (transport->smart_options)
1112 git_reports = set_git_option(transport->smart_options,
1113 name, value);
1114
1115 if (transport->vtable->set_option)
1116 protocol_reports = transport->vtable->set_option(transport,
1117 name, value);
1118
1119 /* If either report is 0, report 0 (success). */
1120 if (!git_reports || !protocol_reports)
1121 return 0;
1122 /* If either reports -1 (invalid value), report -1. */
1123 if ((git_reports == -1) || (protocol_reports == -1))
1124 return -1;
1125 /* Otherwise if both report unknown, report unknown. */
1126 return 1;
1127 }
1128
1129 void transport_set_verbosity(struct transport *transport, int verbosity,
1130 int force_progress)
1131 {
1132 if (verbosity >= 1)
1133 transport->verbose = verbosity <= 3 ? verbosity : 3;
1134 if (verbosity < 0)
1135 transport->verbose = -1;
1136
1137 /**
1138 * Rules used to determine whether to report progress (processing aborts
1139 * when a rule is satisfied):
1140 *
1141 * . Report progress, if force_progress is 1 (ie. --progress).
1142 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1143 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1144 * . Report progress if isatty(2) is 1.
1145 **/
1146 if (force_progress >= 0)
1147 transport->progress = !!force_progress;
1148 else
1149 transport->progress = verbosity >= 0 && isatty(2);
1150 }
1151
1152 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1153 {
1154 int i;
1155
1156 fprintf(stderr, _("The following submodule paths contain changes that can\n"
1157 "not be found on any remote:\n"));
1158 for (i = 0; i < needs_pushing->nr; i++)
1159 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
1160 fprintf(stderr, _("\nPlease try\n\n"
1161 " git push --recurse-submodules=on-demand\n\n"
1162 "or cd to the path and use\n\n"
1163 " git push\n\n"
1164 "to push them to a remote.\n\n"));
1165
1166 string_list_clear(needs_pushing, 0);
1167
1168 die(_("Aborting."));
1169 }
1170
1171 static int run_pre_push_hook(struct transport *transport,
1172 struct ref *remote_refs)
1173 {
1174 int ret = 0, x;
1175 struct ref *r;
1176 struct child_process proc = CHILD_PROCESS_INIT;
1177 struct strbuf buf;
1178 const char *argv[4];
1179
1180 if (!(argv[0] = find_hook("pre-push")))
1181 return 0;
1182
1183 argv[1] = transport->remote->name;
1184 argv[2] = transport->url;
1185 argv[3] = NULL;
1186
1187 proc.argv = argv;
1188 proc.in = -1;
1189 proc.trace2_hook_name = "pre-push";
1190
1191 if (start_command(&proc)) {
1192 finish_command(&proc);
1193 return -1;
1194 }
1195
1196 sigchain_push(SIGPIPE, SIG_IGN);
1197
1198 strbuf_init(&buf, 256);
1199
1200 for (r = remote_refs; r; r = r->next) {
1201 if (!r->peer_ref) continue;
1202 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1203 if (r->status == REF_STATUS_REJECT_STALE) continue;
1204 if (r->status == REF_STATUS_REJECT_REMOTE_UPDATED) continue;
1205 if (r->status == REF_STATUS_UPTODATE) continue;
1206
1207 strbuf_reset(&buf);
1208 strbuf_addf( &buf, "%s %s %s %s\n",
1209 r->peer_ref->name, oid_to_hex(&r->new_oid),
1210 r->name, oid_to_hex(&r->old_oid));
1211
1212 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1213 /* We do not mind if a hook does not read all refs. */
1214 if (errno != EPIPE)
1215 ret = -1;
1216 break;
1217 }
1218 }
1219
1220 strbuf_release(&buf);
1221
1222 x = close(proc.in);
1223 if (!ret)
1224 ret = x;
1225
1226 sigchain_pop(SIGPIPE);
1227
1228 x = finish_command(&proc);
1229 if (!ret)
1230 ret = x;
1231
1232 return ret;
1233 }
1234
1235 int transport_push(struct repository *r,
1236 struct transport *transport,
1237 struct refspec *rs, int flags,
1238 unsigned int *reject_reasons)
1239 {
1240 *reject_reasons = 0;
1241
1242 if (transport_color_config() < 0)
1243 return -1;
1244
1245 if (transport->vtable->push_refs) {
1246 struct ref *remote_refs;
1247 struct ref *local_refs = get_local_heads();
1248 int match_flags = MATCH_REFS_NONE;
1249 int verbose = (transport->verbose > 0);
1250 int quiet = (transport->verbose < 0);
1251 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1252 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1253 int push_ret, ret, err;
1254 struct strvec ref_prefixes = STRVEC_INIT;
1255
1256 if (check_push_refs(local_refs, rs) < 0)
1257 return -1;
1258
1259 refspec_ref_prefixes(rs, &ref_prefixes);
1260
1261 trace2_region_enter("transport_push", "get_refs_list", r);
1262 remote_refs = transport->vtable->get_refs_list(transport, 1,
1263 &ref_prefixes);
1264 trace2_region_leave("transport_push", "get_refs_list", r);
1265
1266 strvec_clear(&ref_prefixes);
1267
1268 if (flags & TRANSPORT_PUSH_ALL)
1269 match_flags |= MATCH_REFS_ALL;
1270 if (flags & TRANSPORT_PUSH_MIRROR)
1271 match_flags |= MATCH_REFS_MIRROR;
1272 if (flags & TRANSPORT_PUSH_PRUNE)
1273 match_flags |= MATCH_REFS_PRUNE;
1274 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1275 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1276
1277 if (match_push_refs(local_refs, &remote_refs, rs, match_flags))
1278 return -1;
1279
1280 if (transport->smart_options &&
1281 transport->smart_options->cas &&
1282 !is_empty_cas(transport->smart_options->cas))
1283 apply_push_cas(transport->smart_options->cas,
1284 transport->remote, remote_refs);
1285
1286 set_ref_status_for_push(remote_refs,
1287 flags & TRANSPORT_PUSH_MIRROR,
1288 flags & TRANSPORT_PUSH_FORCE);
1289
1290 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1291 if (run_pre_push_hook(transport, remote_refs))
1292 return -1;
1293
1294 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1295 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1296 !is_bare_repository()) {
1297 struct ref *ref = remote_refs;
1298 struct oid_array commits = OID_ARRAY_INIT;
1299
1300 trace2_region_enter("transport_push", "push_submodules", r);
1301 for (; ref; ref = ref->next)
1302 if (!is_null_oid(&ref->new_oid))
1303 oid_array_append(&commits,
1304 &ref->new_oid);
1305
1306 if (!push_unpushed_submodules(r,
1307 &commits,
1308 transport->remote,
1309 rs,
1310 transport->push_options,
1311 pretend)) {
1312 oid_array_clear(&commits);
1313 trace2_region_leave("transport_push", "push_submodules", r);
1314 die(_("failed to push all needed submodules"));
1315 }
1316 oid_array_clear(&commits);
1317 trace2_region_leave("transport_push", "push_submodules", r);
1318 }
1319
1320 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1321 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1322 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1323 !pretend)) && !is_bare_repository()) {
1324 struct ref *ref = remote_refs;
1325 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1326 struct oid_array commits = OID_ARRAY_INIT;
1327
1328 trace2_region_enter("transport_push", "check_submodules", r);
1329 for (; ref; ref = ref->next)
1330 if (!is_null_oid(&ref->new_oid))
1331 oid_array_append(&commits,
1332 &ref->new_oid);
1333
1334 if (find_unpushed_submodules(r,
1335 &commits,
1336 transport->remote->name,
1337 &needs_pushing)) {
1338 oid_array_clear(&commits);
1339 trace2_region_leave("transport_push", "check_submodules", r);
1340 die_with_unpushed_submodules(&needs_pushing);
1341 }
1342 string_list_clear(&needs_pushing, 0);
1343 oid_array_clear(&commits);
1344 trace2_region_leave("transport_push", "check_submodules", r);
1345 }
1346
1347 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY)) {
1348 trace2_region_enter("transport_push", "push_refs", r);
1349 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1350 trace2_region_leave("transport_push", "push_refs", r);
1351 } else
1352 push_ret = 0;
1353 err = push_had_errors(remote_refs);
1354 ret = push_ret | err;
1355
1356 if (!quiet || err)
1357 transport_print_push_status(transport->url, remote_refs,
1358 verbose | porcelain, porcelain,
1359 reject_reasons);
1360
1361 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1362 set_upstreams(transport, remote_refs, pretend);
1363
1364 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1365 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1366 struct ref *ref;
1367 for (ref = remote_refs; ref; ref = ref->next)
1368 transport_update_tracking_ref(transport->remote, ref, verbose);
1369 }
1370
1371 if (porcelain && !push_ret)
1372 puts("Done");
1373 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1374 fprintf(stderr, "Everything up-to-date\n");
1375
1376 return ret;
1377 }
1378 return 1;
1379 }
1380
1381 const struct ref *transport_get_remote_refs(struct transport *transport,
1382 const struct strvec *ref_prefixes)
1383 {
1384 if (!transport->got_remote_refs) {
1385 transport->remote_refs =
1386 transport->vtable->get_refs_list(transport, 0,
1387 ref_prefixes);
1388 transport->got_remote_refs = 1;
1389 }
1390
1391 return transport->remote_refs;
1392 }
1393
1394 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1395 {
1396 int rc;
1397 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1398 struct ref **heads = NULL;
1399 struct ref *rm;
1400
1401 for (rm = refs; rm; rm = rm->next) {
1402 nr_refs++;
1403 if (rm->peer_ref &&
1404 !is_null_oid(&rm->old_oid) &&
1405 oideq(&rm->peer_ref->old_oid, &rm->old_oid))
1406 continue;
1407 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1408 heads[nr_heads++] = rm;
1409 }
1410
1411 if (!nr_heads) {
1412 /*
1413 * When deepening of a shallow repository is requested,
1414 * then local and remote refs are likely to still be equal.
1415 * Just feed them all to the fetch method in that case.
1416 * This condition shouldn't be met in a non-deepening fetch
1417 * (see builtin/fetch.c:quickfetch()).
1418 */
1419 ALLOC_ARRAY(heads, nr_refs);
1420 for (rm = refs; rm; rm = rm->next)
1421 heads[nr_heads++] = rm;
1422 }
1423
1424 rc = transport->vtable->fetch(transport, nr_heads, heads);
1425
1426 free(heads);
1427 return rc;
1428 }
1429
1430 void transport_unlock_pack(struct transport *transport)
1431 {
1432 int i;
1433
1434 for (i = 0; i < transport->pack_lockfiles.nr; i++)
1435 unlink_or_warn(transport->pack_lockfiles.items[i].string);
1436 string_list_clear(&transport->pack_lockfiles, 0);
1437 }
1438
1439 int transport_connect(struct transport *transport, const char *name,
1440 const char *exec, int fd[2])
1441 {
1442 if (transport->vtable->connect)
1443 return transport->vtable->connect(transport, name, exec, fd);
1444 else
1445 die(_("operation not supported by protocol"));
1446 }
1447
1448 int transport_disconnect(struct transport *transport)
1449 {
1450 int ret = 0;
1451 if (transport->vtable->disconnect)
1452 ret = transport->vtable->disconnect(transport);
1453 free(transport);
1454 return ret;
1455 }
1456
1457 /*
1458 * Strip username (and password) from a URL and return
1459 * it in a newly allocated string.
1460 */
1461 char *transport_anonymize_url(const char *url)
1462 {
1463 char *scheme_prefix, *anon_part;
1464 size_t anon_len, prefix_len = 0;
1465
1466 anon_part = strchr(url, '@');
1467 if (url_is_local_not_ssh(url) || !anon_part)
1468 goto literal_copy;
1469
1470 anon_len = strlen(++anon_part);
1471 scheme_prefix = strstr(url, "://");
1472 if (!scheme_prefix) {
1473 if (!strchr(anon_part, ':'))
1474 /* cannot be "me@there:/path/name" */
1475 goto literal_copy;
1476 } else {
1477 const char *cp;
1478 /* make sure scheme is reasonable */
1479 for (cp = url; cp < scheme_prefix; cp++) {
1480 switch (*cp) {
1481 /* RFC 1738 2.1 */
1482 case '+': case '.': case '-':
1483 break; /* ok */
1484 default:
1485 if (isalnum(*cp))
1486 break;
1487 /* it isn't */
1488 goto literal_copy;
1489 }
1490 }
1491 /* @ past the first slash does not count */
1492 cp = strchr(scheme_prefix + 3, '/');
1493 if (cp && cp < anon_part)
1494 goto literal_copy;
1495 prefix_len = scheme_prefix - url + 3;
1496 }
1497 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1498 (int)anon_len, anon_part);
1499 literal_copy:
1500 return xstrdup(url);
1501 }
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