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pack-bitmap: factor out 'add_commit_to_bitmap()'
[git.git] / transport.c
blob47da955e4fe4548199c28365d3f894bd0b1a81b7
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
290 connect_setup(transport, for_push);
291
292 packet_reader_init(&reader, data->fd[0], NULL, 0,
293 PACKET_READ_CHOMP_NEWLINE |
294 PACKET_READ_GENTLE_ON_EOF |
295 PACKET_READ_DIE_ON_ERR_PACKET);
296
297 data->version = discover_version(&reader);
298 switch (data->version) {
299 case protocol_v2:
300 if (must_list_refs)
301 get_remote_refs(data->fd[1], &reader, &refs, for_push,
302 ref_prefixes,
303 transport->server_options,
304 transport->stateless_rpc);
305 break;
306 case protocol_v1:
307 case protocol_v0:
308 die_if_server_options(transport);
309 get_remote_heads(&reader, &refs,
310 for_push ? REF_NORMAL : 0,
311 &data->extra_have,
312 &data->shallow);
313 break;
314 case protocol_unknown_version:
315 BUG("unknown protocol version");
316 }
317 data->got_remote_heads = 1;
318 transport->hash_algo = reader.hash_algo;
319
320 if (reader.line_peeked)
321 BUG("buffer must be empty at the end of handshake()");
322
323 return refs;
324 }
325
326 static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
327 const struct strvec *ref_prefixes)
328 {
329 return handshake(transport, for_push, ref_prefixes, 1);
330 }
331
332 static int fetch_refs_via_pack(struct transport *transport,
333 int nr_heads, struct ref **to_fetch)
334 {
335 int ret = 0;
336 struct git_transport_data *data = transport->data;
337 struct ref *refs = NULL;
338 struct fetch_pack_args args;
339 struct ref *refs_tmp = NULL;
340
341 memset(&args, 0, sizeof(args));
342 args.uploadpack = data->options.uploadpack;
343 args.keep_pack = data->options.keep;
344 args.lock_pack = 1;
345 args.use_thin_pack = data->options.thin;
346 args.include_tag = data->options.followtags;
347 args.verbose = (transport->verbose > 1);
348 args.quiet = (transport->verbose < 0);
349 args.no_progress = !transport->progress;
350 args.depth = data->options.depth;
351 args.deepen_since = data->options.deepen_since;
352 args.deepen_not = data->options.deepen_not;
353 args.deepen_relative = data->options.deepen_relative;
354 args.check_self_contained_and_connected =
355 data->options.check_self_contained_and_connected;
356 args.cloning = transport->cloning;
357 args.update_shallow = data->options.update_shallow;
358 args.from_promisor = data->options.from_promisor;
359 args.filter_options = data->options.filter_options;
360 args.stateless_rpc = transport->stateless_rpc;
361 args.server_options = transport->server_options;
362 args.negotiation_tips = data->options.negotiation_tips;
363
364 if (!data->got_remote_heads) {
365 int i;
366 int must_list_refs = 0;
367 for (i = 0; i < nr_heads; i++) {
368 if (!to_fetch[i]->exact_oid) {
369 must_list_refs = 1;
370 break;
371 }
372 }
373 refs_tmp = handshake(transport, 0, NULL, must_list_refs);
374 }
375
376 if (data->version == protocol_unknown_version)
377 BUG("unknown protocol version");
378 else if (data->version <= protocol_v1)
379 die_if_server_options(transport);
380
381 refs = fetch_pack(&args, data->fd,
382 refs_tmp ? refs_tmp : transport->remote_refs,
383 to_fetch, nr_heads, &data->shallow,
384 &transport->pack_lockfiles, data->version);
385
386 close(data->fd[0]);
387 close(data->fd[1]);
388 if (finish_connect(data->conn))
389 ret = -1;
390 data->conn = NULL;
391 data->got_remote_heads = 0;
392 data->options.self_contained_and_connected =
393 args.self_contained_and_connected;
394 data->options.connectivity_checked = args.connectivity_checked;
395
396 if (refs == NULL)
397 ret = -1;
398 if (report_unmatched_refs(to_fetch, nr_heads))
399 ret = -1;
400
401 free_refs(refs_tmp);
402 free_refs(refs);
403 return ret;
404 }
405
406 static int push_had_errors(struct ref *ref)
407 {
408 for (; ref; ref = ref->next) {
409 switch (ref->status) {
410 case REF_STATUS_NONE:
411 case REF_STATUS_UPTODATE:
412 case REF_STATUS_OK:
413 break;
414 default:
415 return 1;
416 }
417 }
418 return 0;
419 }
420
421 int transport_refs_pushed(struct ref *ref)
422 {
423 for (; ref; ref = ref->next) {
424 switch(ref->status) {
425 case REF_STATUS_NONE:
426 case REF_STATUS_UPTODATE:
427 break;
428 default:
429 return 1;
430 }
431 }
432 return 0;
433 }
434
435 static void update_one_tracking_ref(struct remote *remote, char *refname,
436 struct object_id *new_oid, int deletion,
437 int verbose)
438 {
439 struct refspec_item rs;
440
441 memset(&rs, 0, sizeof(rs));
442 rs.src = refname;
443 rs.dst = NULL;
444
445 if (!remote_find_tracking(remote, &rs)) {
446 if (verbose)
447 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
448 if (deletion)
449 delete_ref(NULL, rs.dst, NULL, 0);
450 else
451 update_ref("update by push", rs.dst, new_oid,
452 NULL, 0, 0);
453 free(rs.dst);
454 }
455 }
456
457 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
458 {
459 char *refname;
460 struct object_id *new_oid;
461 struct ref_push_report *report;
462
463 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
464 return;
465
466 report = ref->report;
467 if (!report)
468 update_one_tracking_ref(remote, ref->name, &ref->new_oid,
469 ref->deletion, verbose);
470 else
471 for (; report; report = report->next) {
472 refname = report->ref_name ? (char *)report->ref_name : ref->name;
473 new_oid = report->new_oid ? report->new_oid : &ref->new_oid;
474 update_one_tracking_ref(remote, refname, new_oid,
475 is_null_oid(new_oid), verbose);
476 }
477 }
478
479 static void print_ref_status(char flag, const char *summary,
480 struct ref *to, struct ref *from, const char *msg,
481 struct ref_push_report *report,
482 int porcelain, int summary_width)
483 {
484 const char *to_name;
485
486 if (report && report->ref_name)
487 to_name = report->ref_name;
488 else
489 to_name = to->name;
490
491 if (porcelain) {
492 if (from)
493 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to_name);
494 else
495 fprintf(stdout, "%c\t:%s\t", flag, to_name);
496 if (msg)
497 fprintf(stdout, "%s (%s)\n", summary, msg);
498 else
499 fprintf(stdout, "%s\n", summary);
500 } else {
501 const char *red = "", *reset = "";
502 if (push_had_errors(to)) {
503 red = transport_get_color(TRANSPORT_COLOR_REJECTED);
504 reset = transport_get_color(TRANSPORT_COLOR_RESET);
505 }
506 fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
507 summary, reset);
508 if (from)
509 fprintf(stderr, "%s -> %s",
510 prettify_refname(from->name),
511 prettify_refname(to_name));
512 else
513 fputs(prettify_refname(to_name), stderr);
514 if (msg) {
515 fputs(" (", stderr);
516 fputs(msg, stderr);
517 fputc(')', stderr);
518 }
519 fputc('\n', stderr);
520 }
521 }
522
523 static void print_ok_ref_status(struct ref *ref,
524 struct ref_push_report *report,
525 int porcelain, int summary_width)
526 {
527 struct object_id *old_oid;
528 struct object_id *new_oid;
529 const char *ref_name;
530 int forced_update;
531
532 if (report && report->old_oid)
533 old_oid = report->old_oid;
534 else
535 old_oid = &ref->old_oid;
536 if (report && report->new_oid)
537 new_oid = report->new_oid;
538 else
539 new_oid = &ref->new_oid;
540 if (report && report->forced_update)
541 forced_update = report->forced_update;
542 else
543 forced_update = ref->forced_update;
544 if (report && report->ref_name)
545 ref_name = report->ref_name;
546 else
547 ref_name = ref->name;
548
549 if (ref->deletion)
550 print_ref_status('-', "[deleted]", ref, NULL, NULL,
551 report, porcelain, summary_width);
552 else if (is_null_oid(old_oid))
553 print_ref_status('*',
554 (starts_with(ref_name, "refs/tags/")
555 ? "[new tag]"
556 : (starts_with(ref_name, "refs/heads/")
557 ? "[new branch]"
558 : "[new reference]")),
559 ref, ref->peer_ref, NULL,
560 report, porcelain, summary_width);
561 else {
562 struct strbuf quickref = STRBUF_INIT;
563 char type;
564 const char *msg;
565
566 strbuf_add_unique_abbrev(&quickref, old_oid,
567 DEFAULT_ABBREV);
568 if (forced_update) {
569 strbuf_addstr(&quickref, "...");
570 type = '+';
571 msg = "forced update";
572 } else {
573 strbuf_addstr(&quickref, "..");
574 type = ' ';
575 msg = NULL;
576 }
577 strbuf_add_unique_abbrev(&quickref, new_oid,
578 DEFAULT_ABBREV);
579
580 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
581 report, porcelain, summary_width);
582 strbuf_release(&quickref);
583 }
584 }
585
586 static int print_one_push_report(struct ref *ref, const char *dest, int count,
587 struct ref_push_report *report,
588 int porcelain, int summary_width)
589 {
590 if (!count) {
591 char *url = transport_anonymize_url(dest);
592 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
593 free(url);
594 }
595
596 switch(ref->status) {
597 case REF_STATUS_NONE:
598 print_ref_status('X', "[no match]", ref, NULL, NULL,
599 report, porcelain, summary_width);
600 break;
601 case REF_STATUS_REJECT_NODELETE:
602 print_ref_status('!', "[rejected]", ref, NULL,
603 "remote does not support deleting refs",
604 report, porcelain, summary_width);
605 break;
606 case REF_STATUS_UPTODATE:
607 print_ref_status('=', "[up to date]", ref,
608 ref->peer_ref, NULL,
609 report, porcelain, summary_width);
610 break;
611 case REF_STATUS_REJECT_NONFASTFORWARD:
612 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
613 "non-fast-forward",
614 report, porcelain, summary_width);
615 break;
616 case REF_STATUS_REJECT_ALREADY_EXISTS:
617 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
618 "already exists",
619 report, porcelain, summary_width);
620 break;
621 case REF_STATUS_REJECT_FETCH_FIRST:
622 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
623 "fetch first",
624 report, porcelain, summary_width);
625 break;
626 case REF_STATUS_REJECT_NEEDS_FORCE:
627 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
628 "needs force",
629 report, porcelain, summary_width);
630 break;
631 case REF_STATUS_REJECT_STALE:
632 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
633 "stale info",
634 report, porcelain, summary_width);
635 break;
636 case REF_STATUS_REJECT_REMOTE_UPDATED:
637 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
638 "remote ref updated since checkout",
639 report, porcelain, summary_width);
640 break;
641 case REF_STATUS_REJECT_SHALLOW:
642 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
643 "new shallow roots not allowed",
644 report, porcelain, summary_width);
645 break;
646 case REF_STATUS_REMOTE_REJECT:
647 print_ref_status('!', "[remote rejected]", ref,
648 ref->deletion ? NULL : ref->peer_ref,
649 ref->remote_status,
650 report, porcelain, summary_width);
651 break;
652 case REF_STATUS_EXPECTING_REPORT:
653 print_ref_status('!', "[remote failure]", ref,
654 ref->deletion ? NULL : ref->peer_ref,
655 "remote failed to report status",
656 report, porcelain, summary_width);
657 break;
658 case REF_STATUS_ATOMIC_PUSH_FAILED:
659 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
660 "atomic push failed",
661 report, porcelain, summary_width);
662 break;
663 case REF_STATUS_OK:
664 print_ok_ref_status(ref, report, porcelain, summary_width);
665 break;
666 }
667
668 return 1;
669 }
670
671 static int print_one_push_status(struct ref *ref, const char *dest, int count,
672 int porcelain, int summary_width)
673 {
674 struct ref_push_report *report;
675 int n = 0;
676
677 if (!ref->report)
678 return print_one_push_report(ref, dest, count,
679 NULL, porcelain, summary_width);
680
681 for (report = ref->report; report; report = report->next)
682 print_one_push_report(ref, dest, count + n++,
683 report, porcelain, summary_width);
684 return n;
685 }
686
687 static int measure_abbrev(const struct object_id *oid, int sofar)
688 {
689 char hex[GIT_MAX_HEXSZ + 1];
690 int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
691
692 return (w < sofar) ? sofar : w;
693 }
694
695 int transport_summary_width(const struct ref *refs)
696 {
697 int maxw = -1;
698
699 for (; refs; refs = refs->next) {
700 maxw = measure_abbrev(&refs->old_oid, maxw);
701 maxw = measure_abbrev(&refs->new_oid, maxw);
702 }
703 if (maxw < 0)
704 maxw = FALLBACK_DEFAULT_ABBREV;
705 return (2 * maxw + 3);
706 }
707
708 void transport_print_push_status(const char *dest, struct ref *refs,
709 int verbose, int porcelain, unsigned int *reject_reasons)
710 {
711 struct ref *ref;
712 int n = 0;
713 char *head;
714 int summary_width = transport_summary_width(refs);
715
716 if (transport_color_config() < 0)
717 warning(_("could not parse transport.color.* config"));
718
719 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
720
721 if (verbose) {
722 for (ref = refs; ref; ref = ref->next)
723 if (ref->status == REF_STATUS_UPTODATE)
724 n += print_one_push_status(ref, dest, n,
725 porcelain, summary_width);
726 }
727
728 for (ref = refs; ref; ref = ref->next)
729 if (ref->status == REF_STATUS_OK)
730 n += print_one_push_status(ref, dest, n,
731 porcelain, summary_width);
732
733 *reject_reasons = 0;
734 for (ref = refs; ref; ref = ref->next) {
735 if (ref->status != REF_STATUS_NONE &&
736 ref->status != REF_STATUS_UPTODATE &&
737 ref->status != REF_STATUS_OK)
738 n += print_one_push_status(ref, dest, n,
739 porcelain, summary_width);
740 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
741 if (head != NULL && !strcmp(head, ref->name))
742 *reject_reasons |= REJECT_NON_FF_HEAD;
743 else
744 *reject_reasons |= REJECT_NON_FF_OTHER;
745 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
746 *reject_reasons |= REJECT_ALREADY_EXISTS;
747 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
748 *reject_reasons |= REJECT_FETCH_FIRST;
749 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
750 *reject_reasons |= REJECT_NEEDS_FORCE;
751 } else if (ref->status == REF_STATUS_REJECT_REMOTE_UPDATED) {
752 *reject_reasons |= REJECT_REF_NEEDS_UPDATE;
753 }
754 }
755 free(head);
756 }
757
758 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
759 {
760 struct git_transport_data *data = transport->data;
761 struct send_pack_args args;
762 int ret = 0;
763
764 if (transport_color_config() < 0)
765 return -1;
766
767 if (!data->got_remote_heads)
768 get_refs_via_connect(transport, 1, NULL);
769
770 memset(&args, 0, sizeof(args));
771 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
772 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
773 args.use_thin_pack = data->options.thin;
774 args.verbose = (transport->verbose > 0);
775 args.quiet = (transport->verbose < 0);
776 args.progress = transport->progress;
777 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
778 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
779 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
780 args.push_options = transport->push_options;
781 args.url = transport->url;
782
783 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
784 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
785 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
786 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
787 else
788 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
789
790 switch (data->version) {
791 case protocol_v2:
792 die(_("support for protocol v2 not implemented yet"));
793 break;
794 case protocol_v1:
795 case protocol_v0:
796 ret = send_pack(&args, data->fd, data->conn, remote_refs,
797 &data->extra_have);
798 break;
799 case protocol_unknown_version:
800 BUG("unknown protocol version");
801 }
802
803 close(data->fd[1]);
804 close(data->fd[0]);
805 /*
806 * Atomic push may abort the connection early and close the pipe,
807 * which may cause an error for `finish_connect()`. Ignore this error
808 * for atomic git-push.
809 */
810 if (ret || args.atomic)
811 finish_connect(data->conn);
812 else
813 ret = finish_connect(data->conn);
814 data->conn = NULL;
815 data->got_remote_heads = 0;
816
817 return ret;
818 }
819
820 static int connect_git(struct transport *transport, const char *name,
821 const char *executable, int fd[2])
822 {
823 struct git_transport_data *data = transport->data;
824 data->conn = git_connect(data->fd, transport->url,
825 executable, 0);
826 fd[0] = data->fd[0];
827 fd[1] = data->fd[1];
828 return 0;
829 }
830
831 static int disconnect_git(struct transport *transport)
832 {
833 struct git_transport_data *data = transport->data;
834 if (data->conn) {
835 if (data->got_remote_heads && !transport->stateless_rpc)
836 packet_flush(data->fd[1]);
837 close(data->fd[0]);
838 close(data->fd[1]);
839 finish_connect(data->conn);
840 }
841
842 free(data);
843 return 0;
844 }
845
846 static struct transport_vtable taken_over_vtable = {
847 NULL,
848 get_refs_via_connect,
849 fetch_refs_via_pack,
850 git_transport_push,
851 NULL,
852 disconnect_git
853 };
854
855 void transport_take_over(struct transport *transport,
856 struct child_process *child)
857 {
858 struct git_transport_data *data;
859
860 if (!transport->smart_options)
861 BUG("taking over transport requires non-NULL "
862 "smart_options field.");
863
864 data = xcalloc(1, sizeof(*data));
865 data->options = *transport->smart_options;
866 data->conn = child;
867 data->fd[0] = data->conn->out;
868 data->fd[1] = data->conn->in;
869 data->got_remote_heads = 0;
870 transport->data = data;
871
872 transport->vtable = &taken_over_vtable;
873 transport->smart_options = &(data->options);
874
875 transport->cannot_reuse = 1;
876 }
877
878 static int is_file(const char *url)
879 {
880 struct stat buf;
881 if (stat(url, &buf))
882 return 0;
883 return S_ISREG(buf.st_mode);
884 }
885
886 static int external_specification_len(const char *url)
887 {
888 return strchr(url, ':') - url;
889 }
890
891 static const struct string_list *protocol_whitelist(void)
892 {
893 static int enabled = -1;
894 static struct string_list allowed = STRING_LIST_INIT_DUP;
895
896 if (enabled < 0) {
897 const char *v = getenv("GIT_ALLOW_PROTOCOL");
898 if (v) {
899 string_list_split(&allowed, v, ':', -1);
900 string_list_sort(&allowed);
901 enabled = 1;
902 } else {
903 enabled = 0;
904 }
905 }
906
907 return enabled ? &allowed : NULL;
908 }
909
910 enum protocol_allow_config {
911 PROTOCOL_ALLOW_NEVER = 0,
912 PROTOCOL_ALLOW_USER_ONLY,
913 PROTOCOL_ALLOW_ALWAYS
914 };
915
916 static enum protocol_allow_config parse_protocol_config(const char *key,
917 const char *value)
918 {
919 if (!strcasecmp(value, "always"))
920 return PROTOCOL_ALLOW_ALWAYS;
921 else if (!strcasecmp(value, "never"))
922 return PROTOCOL_ALLOW_NEVER;
923 else if (!strcasecmp(value, "user"))
924 return PROTOCOL_ALLOW_USER_ONLY;
925
926 die(_("unknown value for config '%s': %s"), key, value);
927 }
928
929 static enum protocol_allow_config get_protocol_config(const char *type)
930 {
931 char *key = xstrfmt("protocol.%s.allow", type);
932 char *value;
933
934 /* first check the per-protocol config */
935 if (!git_config_get_string(key, &value)) {
936 enum protocol_allow_config ret =
937 parse_protocol_config(key, value);
938 free(key);
939 free(value);
940 return ret;
941 }
942 free(key);
943
944 /* if defined, fallback to user-defined default for unknown protocols */
945 if (!git_config_get_string("protocol.allow", &value)) {
946 enum protocol_allow_config ret =
947 parse_protocol_config("protocol.allow", value);
948 free(value);
949 return ret;
950 }
951
952 /* fallback to built-in defaults */
953 /* known safe */
954 if (!strcmp(type, "http") ||
955 !strcmp(type, "https") ||
956 !strcmp(type, "git") ||
957 !strcmp(type, "ssh") ||
958 !strcmp(type, "file"))
959 return PROTOCOL_ALLOW_ALWAYS;
960
961 /* known scary; err on the side of caution */
962 if (!strcmp(type, "ext"))
963 return PROTOCOL_ALLOW_NEVER;
964
965 /* unknown; by default let them be used only directly by the user */
966 return PROTOCOL_ALLOW_USER_ONLY;
967 }
968
969 int is_transport_allowed(const char *type, int from_user)
970 {
971 const struct string_list *whitelist = protocol_whitelist();
972 if (whitelist)
973 return string_list_has_string(whitelist, type);
974
975 switch (get_protocol_config(type)) {
976 case PROTOCOL_ALLOW_ALWAYS:
977 return 1;
978 case PROTOCOL_ALLOW_NEVER:
979 return 0;
980 case PROTOCOL_ALLOW_USER_ONLY:
981 if (from_user < 0)
982 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
983 return from_user;
984 }
985
986 BUG("invalid protocol_allow_config type");
987 }
988
989 void transport_check_allowed(const char *type)
990 {
991 if (!is_transport_allowed(type, -1))
992 die(_("transport '%s' not allowed"), type);
993 }
994
995 static struct transport_vtable bundle_vtable = {
996 NULL,
997 get_refs_from_bundle,
998 fetch_refs_from_bundle,
999 NULL,
1000 NULL,
1001 close_bundle
1002 };
1003
1004 static struct transport_vtable builtin_smart_vtable = {
1005 NULL,
1006 get_refs_via_connect,
1007 fetch_refs_via_pack,
1008 git_transport_push,
1009 connect_git,
1010 disconnect_git
1011 };
1012
1013 struct transport *transport_get(struct remote *remote, const char *url)
1014 {
1015 const char *helper;
1016 struct transport *ret = xcalloc(1, sizeof(*ret));
1017
1018 ret->progress = isatty(2);
1019 string_list_init(&ret->pack_lockfiles, 1);
1020
1021 if (!remote)
1022 BUG("No remote provided to transport_get()");
1023
1024 ret->got_remote_refs = 0;
1025 ret->remote = remote;
1026 helper = remote->foreign_vcs;
1027
1028 if (!url && remote->url)
1029 url = remote->url[0];
1030 ret->url = url;
1031
1032 /* maybe it is a foreign URL? */
1033 if (url) {
1034 const char *p = url;
1035
1036 while (is_urlschemechar(p == url, *p))
1037 p++;
1038 if (starts_with(p, "::"))
1039 helper = xstrndup(url, p - url);
1040 }
1041
1042 if (helper) {
1043 transport_helper_init(ret, helper);
1044 } else if (starts_with(url, "rsync:")) {
1045 die(_("git-over-rsync is no longer supported"));
1046 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
1047 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
1048 transport_check_allowed("file");
1049 ret->data = data;
1050 ret->vtable = &bundle_vtable;
1051 ret->smart_options = NULL;
1052 } else if (!is_url(url)
1053 || starts_with(url, "file://")
1054 || starts_with(url, "git://")
1055 || starts_with(url, "ssh://")
1056 || starts_with(url, "git+ssh://") /* deprecated - do not use */
1057 || starts_with(url, "ssh+git://") /* deprecated - do not use */
1058 ) {
1059 /*
1060 * These are builtin smart transports; "allowed" transports
1061 * will be checked individually in git_connect.
1062 */
1063 struct git_transport_data *data = xcalloc(1, sizeof(*data));
1064 ret->data = data;
1065 ret->vtable = &builtin_smart_vtable;
1066 ret->smart_options = &(data->options);
1067
1068 data->conn = NULL;
1069 data->got_remote_heads = 0;
1070 } else {
1071 /* Unknown protocol in URL. Pass to external handler. */
1072 int len = external_specification_len(url);
1073 char *handler = xmemdupz(url, len);
1074 transport_helper_init(ret, handler);
1075 }
1076
1077 if (ret->smart_options) {
1078 ret->smart_options->thin = 1;
1079 ret->smart_options->uploadpack = "git-upload-pack";
1080 if (remote->uploadpack)
1081 ret->smart_options->uploadpack = remote->uploadpack;
1082 ret->smart_options->receivepack = "git-receive-pack";
1083 if (remote->receivepack)
1084 ret->smart_options->receivepack = remote->receivepack;
1085 }
1086
1087 ret->hash_algo = &hash_algos[GIT_HASH_SHA1];
1088
1089 return ret;
1090 }
1091
1092 const struct git_hash_algo *transport_get_hash_algo(struct transport *transport)
1093 {
1094 return transport->hash_algo;
1095 }
1096
1097 int transport_set_option(struct transport *transport,
1098 const char *name, const char *value)
1099 {
1100 int git_reports = 1, protocol_reports = 1;
1101
1102 if (transport->smart_options)
1103 git_reports = set_git_option(transport->smart_options,
1104 name, value);
1105
1106 if (transport->vtable->set_option)
1107 protocol_reports = transport->vtable->set_option(transport,
1108 name, value);
1109
1110 /* If either report is 0, report 0 (success). */
1111 if (!git_reports || !protocol_reports)
1112 return 0;
1113 /* If either reports -1 (invalid value), report -1. */
1114 if ((git_reports == -1) || (protocol_reports == -1))
1115 return -1;
1116 /* Otherwise if both report unknown, report unknown. */
1117 return 1;
1118 }
1119
1120 void transport_set_verbosity(struct transport *transport, int verbosity,
1121 int force_progress)
1122 {
1123 if (verbosity >= 1)
1124 transport->verbose = verbosity <= 3 ? verbosity : 3;
1125 if (verbosity < 0)
1126 transport->verbose = -1;
1127
1128 /**
1129 * Rules used to determine whether to report progress (processing aborts
1130 * when a rule is satisfied):
1131 *
1132 * . Report progress, if force_progress is 1 (ie. --progress).
1133 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1134 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1135 * . Report progress if isatty(2) is 1.
1136 **/
1137 if (force_progress >= 0)
1138 transport->progress = !!force_progress;
1139 else
1140 transport->progress = verbosity >= 0 && isatty(2);
1141 }
1142
1143 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1144 {
1145 int i;
1146
1147 fprintf(stderr, _("The following submodule paths contain changes that can\n"
1148 "not be found on any remote:\n"));
1149 for (i = 0; i < needs_pushing->nr; i++)
1150 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
1151 fprintf(stderr, _("\nPlease try\n\n"
1152 " git push --recurse-submodules=on-demand\n\n"
1153 "or cd to the path and use\n\n"
1154 " git push\n\n"
1155 "to push them to a remote.\n\n"));
1156
1157 string_list_clear(needs_pushing, 0);
1158
1159 die(_("Aborting."));
1160 }
1161
1162 static int run_pre_push_hook(struct transport *transport,
1163 struct ref *remote_refs)
1164 {
1165 int ret = 0, x;
1166 struct ref *r;
1167 struct child_process proc = CHILD_PROCESS_INIT;
1168 struct strbuf buf;
1169 const char *argv[4];
1170
1171 if (!(argv[0] = find_hook("pre-push")))
1172 return 0;
1173
1174 argv[1] = transport->remote->name;
1175 argv[2] = transport->url;
1176 argv[3] = NULL;
1177
1178 proc.argv = argv;
1179 proc.in = -1;
1180 proc.trace2_hook_name = "pre-push";
1181
1182 if (start_command(&proc)) {
1183 finish_command(&proc);
1184 return -1;
1185 }
1186
1187 sigchain_push(SIGPIPE, SIG_IGN);
1188
1189 strbuf_init(&buf, 256);
1190
1191 for (r = remote_refs; r; r = r->next) {
1192 if (!r->peer_ref) continue;
1193 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1194 if (r->status == REF_STATUS_REJECT_STALE) continue;
1195 if (r->status == REF_STATUS_REJECT_REMOTE_UPDATED) continue;
1196 if (r->status == REF_STATUS_UPTODATE) continue;
1197
1198 strbuf_reset(&buf);
1199 strbuf_addf( &buf, "%s %s %s %s\n",
1200 r->peer_ref->name, oid_to_hex(&r->new_oid),
1201 r->name, oid_to_hex(&r->old_oid));
1202
1203 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1204 /* We do not mind if a hook does not read all refs. */
1205 if (errno != EPIPE)
1206 ret = -1;
1207 break;
1208 }
1209 }
1210
1211 strbuf_release(&buf);
1212
1213 x = close(proc.in);
1214 if (!ret)
1215 ret = x;
1216
1217 sigchain_pop(SIGPIPE);
1218
1219 x = finish_command(&proc);
1220 if (!ret)
1221 ret = x;
1222
1223 return ret;
1224 }
1225
1226 int transport_push(struct repository *r,
1227 struct transport *transport,
1228 struct refspec *rs, int flags,
1229 unsigned int *reject_reasons)
1230 {
1231 *reject_reasons = 0;
1232
1233 if (transport_color_config() < 0)
1234 return -1;
1235
1236 if (transport->vtable->push_refs) {
1237 struct ref *remote_refs;
1238 struct ref *local_refs = get_local_heads();
1239 int match_flags = MATCH_REFS_NONE;
1240 int verbose = (transport->verbose > 0);
1241 int quiet = (transport->verbose < 0);
1242 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1243 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1244 int push_ret, ret, err;
1245 struct strvec ref_prefixes = STRVEC_INIT;
1246
1247 if (check_push_refs(local_refs, rs) < 0)
1248 return -1;
1249
1250 refspec_ref_prefixes(rs, &ref_prefixes);
1251
1252 trace2_region_enter("transport_push", "get_refs_list", r);
1253 remote_refs = transport->vtable->get_refs_list(transport, 1,
1254 &ref_prefixes);
1255 trace2_region_leave("transport_push", "get_refs_list", r);
1256
1257 strvec_clear(&ref_prefixes);
1258
1259 if (flags & TRANSPORT_PUSH_ALL)
1260 match_flags |= MATCH_REFS_ALL;
1261 if (flags & TRANSPORT_PUSH_MIRROR)
1262 match_flags |= MATCH_REFS_MIRROR;
1263 if (flags & TRANSPORT_PUSH_PRUNE)
1264 match_flags |= MATCH_REFS_PRUNE;
1265 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1266 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1267
1268 if (match_push_refs(local_refs, &remote_refs, rs, match_flags))
1269 return -1;
1270
1271 if (transport->smart_options &&
1272 transport->smart_options->cas &&
1273 !is_empty_cas(transport->smart_options->cas))
1274 apply_push_cas(transport->smart_options->cas,
1275 transport->remote, remote_refs);
1276
1277 set_ref_status_for_push(remote_refs,
1278 flags & TRANSPORT_PUSH_MIRROR,
1279 flags & TRANSPORT_PUSH_FORCE);
1280
1281 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1282 if (run_pre_push_hook(transport, remote_refs))
1283 return -1;
1284
1285 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1286 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1287 !is_bare_repository()) {
1288 struct ref *ref = remote_refs;
1289 struct oid_array commits = OID_ARRAY_INIT;
1290
1291 trace2_region_enter("transport_push", "push_submodules", r);
1292 for (; ref; ref = ref->next)
1293 if (!is_null_oid(&ref->new_oid))
1294 oid_array_append(&commits,
1295 &ref->new_oid);
1296
1297 if (!push_unpushed_submodules(r,
1298 &commits,
1299 transport->remote,
1300 rs,
1301 transport->push_options,
1302 pretend)) {
1303 oid_array_clear(&commits);
1304 trace2_region_leave("transport_push", "push_submodules", r);
1305 die(_("failed to push all needed submodules"));
1306 }
1307 oid_array_clear(&commits);
1308 trace2_region_leave("transport_push", "push_submodules", r);
1309 }
1310
1311 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1312 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1313 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1314 !pretend)) && !is_bare_repository()) {
1315 struct ref *ref = remote_refs;
1316 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1317 struct oid_array commits = OID_ARRAY_INIT;
1318
1319 trace2_region_enter("transport_push", "check_submodules", r);
1320 for (; ref; ref = ref->next)
1321 if (!is_null_oid(&ref->new_oid))
1322 oid_array_append(&commits,
1323 &ref->new_oid);
1324
1325 if (find_unpushed_submodules(r,
1326 &commits,
1327 transport->remote->name,
1328 &needs_pushing)) {
1329 oid_array_clear(&commits);
1330 trace2_region_leave("transport_push", "check_submodules", r);
1331 die_with_unpushed_submodules(&needs_pushing);
1332 }
1333 string_list_clear(&needs_pushing, 0);
1334 oid_array_clear(&commits);
1335 trace2_region_leave("transport_push", "check_submodules", r);
1336 }
1337
1338 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY)) {
1339 trace2_region_enter("transport_push", "push_refs", r);
1340 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1341 trace2_region_leave("transport_push", "push_refs", r);
1342 } else
1343 push_ret = 0;
1344 err = push_had_errors(remote_refs);
1345 ret = push_ret | err;
1346
1347 if (!quiet || err)
1348 transport_print_push_status(transport->url, remote_refs,
1349 verbose | porcelain, porcelain,
1350 reject_reasons);
1351
1352 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1353 set_upstreams(transport, remote_refs, pretend);
1354
1355 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1356 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1357 struct ref *ref;
1358 for (ref = remote_refs; ref; ref = ref->next)
1359 transport_update_tracking_ref(transport->remote, ref, verbose);
1360 }
1361
1362 if (porcelain && !push_ret)
1363 puts("Done");
1364 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1365 fprintf(stderr, "Everything up-to-date\n");
1366
1367 return ret;
1368 }
1369 return 1;
1370 }
1371
1372 const struct ref *transport_get_remote_refs(struct transport *transport,
1373 const struct strvec *ref_prefixes)
1374 {
1375 if (!transport->got_remote_refs) {
1376 transport->remote_refs =
1377 transport->vtable->get_refs_list(transport, 0,
1378 ref_prefixes);
1379 transport->got_remote_refs = 1;
1380 }
1381
1382 return transport->remote_refs;
1383 }
1384
1385 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1386 {
1387 int rc;
1388 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1389 struct ref **heads = NULL;
1390 struct ref *rm;
1391
1392 for (rm = refs; rm; rm = rm->next) {
1393 nr_refs++;
1394 if (rm->peer_ref &&
1395 !is_null_oid(&rm->old_oid) &&
1396 oideq(&rm->peer_ref->old_oid, &rm->old_oid))
1397 continue;
1398 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1399 heads[nr_heads++] = rm;
1400 }
1401
1402 if (!nr_heads) {
1403 /*
1404 * When deepening of a shallow repository is requested,
1405 * then local and remote refs are likely to still be equal.
1406 * Just feed them all to the fetch method in that case.
1407 * This condition shouldn't be met in a non-deepening fetch
1408 * (see builtin/fetch.c:quickfetch()).
1409 */
1410 ALLOC_ARRAY(heads, nr_refs);
1411 for (rm = refs; rm; rm = rm->next)
1412 heads[nr_heads++] = rm;
1413 }
1414
1415 rc = transport->vtable->fetch(transport, nr_heads, heads);
1416
1417 free(heads);
1418 return rc;
1419 }
1420
1421 void transport_unlock_pack(struct transport *transport)
1422 {
1423 int i;
1424
1425 for (i = 0; i < transport->pack_lockfiles.nr; i++)
1426 unlink_or_warn(transport->pack_lockfiles.items[i].string);
1427 string_list_clear(&transport->pack_lockfiles, 0);
1428 }
1429
1430 int transport_connect(struct transport *transport, const char *name,
1431 const char *exec, int fd[2])
1432 {
1433 if (transport->vtable->connect)
1434 return transport->vtable->connect(transport, name, exec, fd);
1435 else
1436 die(_("operation not supported by protocol"));
1437 }
1438
1439 int transport_disconnect(struct transport *transport)
1440 {
1441 int ret = 0;
1442 if (transport->vtable->disconnect)
1443 ret = transport->vtable->disconnect(transport);
1444 free(transport);
1445 return ret;
1446 }
1447
1448 /*
1449 * Strip username (and password) from a URL and return
1450 * it in a newly allocated string.
1451 */
1452 char *transport_anonymize_url(const char *url)
1453 {
1454 char *scheme_prefix, *anon_part;
1455 size_t anon_len, prefix_len = 0;
1456
1457 anon_part = strchr(url, '@');
1458 if (url_is_local_not_ssh(url) || !anon_part)
1459 goto literal_copy;
1460
1461 anon_len = strlen(++anon_part);
1462 scheme_prefix = strstr(url, "://");
1463 if (!scheme_prefix) {
1464 if (!strchr(anon_part, ':'))
1465 /* cannot be "me@there:/path/name" */
1466 goto literal_copy;
1467 } else {
1468 const char *cp;
1469 /* make sure scheme is reasonable */
1470 for (cp = url; cp < scheme_prefix; cp++) {
1471 switch (*cp) {
1472 /* RFC 1738 2.1 */
1473 case '+': case '.': case '-':
1474 break; /* ok */
1475 default:
1476 if (isalnum(*cp))
1477 break;
1478 /* it isn't */
1479 goto literal_copy;
1480 }
1481 }
1482 /* @ past the first slash does not count */
1483 cp = strchr(scheme_prefix + 3, '/');
1484 if (cp && cp < anon_part)
1485 goto literal_copy;
1486 prefix_len = scheme_prefix - url + 3;
1487 }
1488 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1489 (int)anon_len, anon_part);
1490 literal_copy:
1491 return xstrdup(url);
1492 }
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