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New capability "report-status-v2" for git-push
[git.git] / transport.c
blobe146de6c4eba4bedd577933a97e95929f2c0d123
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 argv_array *ref_prefixes)
131 {
132 struct bundle_transport_data *data = transport->data;
133 struct ref *result = NULL;
134 int i;
135
136 if (for_push)
137 return NULL;
138
139 data->get_refs_from_bundle_called = 1;
140
141 if (data->fd > 0)
142 close(data->fd);
143 data->fd = read_bundle_header(transport->url, &data->header);
144 if (data->fd < 0)
145 die(_("could not read bundle '%s'"), transport->url);
146 for (i = 0; i < data->header.references.nr; i++) {
147 struct ref_list_entry *e = data->header.references.list + i;
148 struct ref *ref = alloc_ref(e->name);
149 oidcpy(&ref->old_oid, &e->oid);
150 ref->next = result;
151 result = ref;
152 }
153 return result;
154 }
155
156 static int fetch_refs_from_bundle(struct transport *transport,
157 int nr_heads, struct ref **to_fetch)
158 {
159 struct bundle_transport_data *data = transport->data;
160
161 if (!data->get_refs_from_bundle_called)
162 get_refs_from_bundle(transport, 0, NULL);
163 return unbundle(the_repository, &data->header, data->fd,
164 transport->progress ? BUNDLE_VERBOSE : 0);
165 }
166
167 static int close_bundle(struct transport *transport)
168 {
169 struct bundle_transport_data *data = transport->data;
170 if (data->fd > 0)
171 close(data->fd);
172 free(data);
173 return 0;
174 }
175
176 struct git_transport_data {
177 struct git_transport_options options;
178 struct child_process *conn;
179 int fd[2];
180 unsigned got_remote_heads : 1;
181 enum protocol_version version;
182 struct oid_array extra_have;
183 struct oid_array shallow;
184 };
185
186 static int set_git_option(struct git_transport_options *opts,
187 const char *name, const char *value)
188 {
189 if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
190 opts->uploadpack = value;
191 return 0;
192 } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
193 opts->receivepack = value;
194 return 0;
195 } else if (!strcmp(name, TRANS_OPT_THIN)) {
196 opts->thin = !!value;
197 return 0;
198 } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
199 opts->followtags = !!value;
200 return 0;
201 } else if (!strcmp(name, TRANS_OPT_KEEP)) {
202 opts->keep = !!value;
203 return 0;
204 } else if (!strcmp(name, TRANS_OPT_UPDATE_SHALLOW)) {
205 opts->update_shallow = !!value;
206 return 0;
207 } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
208 if (!value)
209 opts->depth = 0;
210 else {
211 char *end;
212 opts->depth = strtol(value, &end, 0);
213 if (*end)
214 die(_("transport: invalid depth option '%s'"), value);
215 }
216 return 0;
217 } else if (!strcmp(name, TRANS_OPT_DEEPEN_SINCE)) {
218 opts->deepen_since = value;
219 return 0;
220 } else if (!strcmp(name, TRANS_OPT_DEEPEN_NOT)) {
221 opts->deepen_not = (const struct string_list *)value;
222 return 0;
223 } else if (!strcmp(name, TRANS_OPT_DEEPEN_RELATIVE)) {
224 opts->deepen_relative = !!value;
225 return 0;
226 } else if (!strcmp(name, TRANS_OPT_FROM_PROMISOR)) {
227 opts->from_promisor = !!value;
228 return 0;
229 } else if (!strcmp(name, TRANS_OPT_NO_DEPENDENTS)) {
230 opts->no_dependents = !!value;
231 return 0;
232 } else if (!strcmp(name, TRANS_OPT_LIST_OBJECTS_FILTER)) {
233 list_objects_filter_die_if_populated(&opts->filter_options);
234 parse_list_objects_filter(&opts->filter_options, value);
235 return 0;
236 }
237 return 1;
238 }
239
240 static int connect_setup(struct transport *transport, int for_push)
241 {
242 struct git_transport_data *data = transport->data;
243 int flags = transport->verbose > 0 ? CONNECT_VERBOSE : 0;
244
245 if (data->conn)
246 return 0;
247
248 switch (transport->family) {
249 case TRANSPORT_FAMILY_ALL: break;
250 case TRANSPORT_FAMILY_IPV4: flags |= CONNECT_IPV4; break;
251 case TRANSPORT_FAMILY_IPV6: flags |= CONNECT_IPV6; break;
252 }
253
254 data->conn = git_connect(data->fd, transport->url,
255 for_push ? data->options.receivepack :
256 data->options.uploadpack,
257 flags);
258
259 return 0;
260 }
261
262 static void die_if_server_options(struct transport *transport)
263 {
264 if (!transport->server_options || !transport->server_options->nr)
265 return;
266 advise(_("see protocol.version in 'git help config' for more details"));
267 die(_("server options require protocol version 2 or later"));
268 }
269
270 /*
271 * Obtains the protocol version from the transport and writes it to
272 * transport->data->version, first connecting if not already connected.
273 *
274 * If the protocol version is one that allows skipping the listing of remote
275 * refs, and must_list_refs is 0, the listing of remote refs is skipped and
276 * this function returns NULL. Otherwise, this function returns the list of
277 * remote refs.
278 */
279 static struct ref *handshake(struct transport *transport, int for_push,
280 const struct argv_array *ref_prefixes,
281 int must_list_refs)
282 {
283 struct git_transport_data *data = transport->data;
284 struct ref *refs = NULL;
285 struct packet_reader reader;
286
287 connect_setup(transport, for_push);
288
289 packet_reader_init(&reader, data->fd[0], NULL, 0,
290 PACKET_READ_CHOMP_NEWLINE |
291 PACKET_READ_GENTLE_ON_EOF |
292 PACKET_READ_DIE_ON_ERR_PACKET);
293
294 data->version = discover_version(&reader);
295 switch (data->version) {
296 case protocol_v2:
297 if (must_list_refs)
298 get_remote_refs(data->fd[1], &reader, &refs, for_push,
299 ref_prefixes,
300 transport->server_options);
301 break;
302 case protocol_v1:
303 case protocol_v0:
304 die_if_server_options(transport);
305 get_remote_heads(&reader, &refs,
306 for_push ? REF_NORMAL : 0,
307 &data->extra_have,
308 &data->shallow);
309 break;
310 case protocol_unknown_version:
311 BUG("unknown protocol version");
312 }
313 data->got_remote_heads = 1;
314
315 if (reader.line_peeked)
316 BUG("buffer must be empty at the end of handshake()");
317
318 return refs;
319 }
320
321 static struct ref *get_refs_via_connect(struct transport *transport, int for_push,
322 const struct argv_array *ref_prefixes)
323 {
324 return handshake(transport, for_push, ref_prefixes, 1);
325 }
326
327 static int fetch_refs_via_pack(struct transport *transport,
328 int nr_heads, struct ref **to_fetch)
329 {
330 int ret = 0;
331 struct git_transport_data *data = transport->data;
332 struct ref *refs = NULL;
333 struct fetch_pack_args args;
334 struct ref *refs_tmp = NULL;
335
336 memset(&args, 0, sizeof(args));
337 args.uploadpack = data->options.uploadpack;
338 args.keep_pack = data->options.keep;
339 args.lock_pack = 1;
340 args.use_thin_pack = data->options.thin;
341 args.include_tag = data->options.followtags;
342 args.verbose = (transport->verbose > 1);
343 args.quiet = (transport->verbose < 0);
344 args.no_progress = !transport->progress;
345 args.depth = data->options.depth;
346 args.deepen_since = data->options.deepen_since;
347 args.deepen_not = data->options.deepen_not;
348 args.deepen_relative = data->options.deepen_relative;
349 args.check_self_contained_and_connected =
350 data->options.check_self_contained_and_connected;
351 args.cloning = transport->cloning;
352 args.update_shallow = data->options.update_shallow;
353 args.from_promisor = data->options.from_promisor;
354 args.no_dependents = data->options.no_dependents;
355 args.filter_options = data->options.filter_options;
356 args.stateless_rpc = transport->stateless_rpc;
357 args.server_options = transport->server_options;
358 args.negotiation_tips = data->options.negotiation_tips;
359
360 if (!data->got_remote_heads) {
361 int i;
362 int must_list_refs = 0;
363 for (i = 0; i < nr_heads; i++) {
364 if (!to_fetch[i]->exact_oid) {
365 must_list_refs = 1;
366 break;
367 }
368 }
369 refs_tmp = handshake(transport, 0, NULL, must_list_refs);
370 }
371
372 switch (data->version) {
373 case protocol_v2:
374 refs = fetch_pack(&args, data->fd,
375 refs_tmp ? refs_tmp : transport->remote_refs,
376 to_fetch, nr_heads, &data->shallow,
377 &transport->pack_lockfile, data->version);
378 break;
379 case protocol_v1:
380 case protocol_v0:
381 die_if_server_options(transport);
382 refs = fetch_pack(&args, data->fd,
383 refs_tmp ? refs_tmp : transport->remote_refs,
384 to_fetch, nr_heads, &data->shallow,
385 &transport->pack_lockfile, data->version);
386 break;
387 case protocol_unknown_version:
388 BUG("unknown protocol version");
389 }
390
391 close(data->fd[0]);
392 close(data->fd[1]);
393 if (finish_connect(data->conn))
394 ret = -1;
395 data->conn = NULL;
396 data->got_remote_heads = 0;
397 data->options.self_contained_and_connected =
398 args.self_contained_and_connected;
399 data->options.connectivity_checked = args.connectivity_checked;
400
401 if (refs == NULL)
402 ret = -1;
403 if (report_unmatched_refs(to_fetch, nr_heads))
404 ret = -1;
405
406 free_refs(refs_tmp);
407 free_refs(refs);
408 return ret;
409 }
410
411 static int push_had_errors(struct ref *ref)
412 {
413 for (; ref; ref = ref->next) {
414 switch (ref->status) {
415 case REF_STATUS_NONE:
416 case REF_STATUS_UPTODATE:
417 case REF_STATUS_OK:
418 break;
419 default:
420 return 1;
421 }
422 }
423 return 0;
424 }
425
426 int transport_refs_pushed(struct ref *ref)
427 {
428 for (; ref; ref = ref->next) {
429 switch(ref->status) {
430 case REF_STATUS_NONE:
431 case REF_STATUS_UPTODATE:
432 break;
433 default:
434 return 1;
435 }
436 }
437 return 0;
438 }
439
440 void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
441 {
442 struct refspec_item rs;
443
444 if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
445 return;
446
447 rs.src = ref->name;
448 rs.dst = NULL;
449
450 if (!remote_find_tracking(remote, &rs)) {
451 if (verbose)
452 fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
453 if (ref->deletion) {
454 delete_ref(NULL, rs.dst, NULL, 0);
455 } else
456 update_ref("update by push", rs.dst, &ref->new_oid,
457 NULL, 0, 0);
458 free(rs.dst);
459 }
460 }
461
462 static void print_ref_status(char flag, const char *summary,
463 struct ref *to, struct ref *from, const char *msg,
464 struct ref_push_report *report,
465 int porcelain, int summary_width)
466 {
467 const char *to_name;
468
469 if (report && report->ref_name)
470 to_name = report->ref_name;
471 else
472 to_name = to->name;
473
474 if (porcelain) {
475 if (from)
476 fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to_name);
477 else
478 fprintf(stdout, "%c\t:%s\t", flag, to_name);
479 if (msg)
480 fprintf(stdout, "%s (%s)\n", summary, msg);
481 else
482 fprintf(stdout, "%s\n", summary);
483 } else {
484 const char *red = "", *reset = "";
485 if (push_had_errors(to)) {
486 red = transport_get_color(TRANSPORT_COLOR_REJECTED);
487 reset = transport_get_color(TRANSPORT_COLOR_RESET);
488 }
489 fprintf(stderr, " %s%c %-*s%s ", red, flag, summary_width,
490 summary, reset);
491 if (from)
492 fprintf(stderr, "%s -> %s",
493 prettify_refname(from->name),
494 prettify_refname(to_name));
495 else
496 fputs(prettify_refname(to_name), stderr);
497 if (msg) {
498 fputs(" (", stderr);
499 fputs(msg, stderr);
500 fputc(')', stderr);
501 }
502 fputc('\n', stderr);
503 }
504 }
505
506 static void print_ok_ref_status(struct ref *ref,
507 struct ref_push_report *report,
508 int porcelain, int summary_width)
509 {
510 struct object_id *old_oid;
511 struct object_id *new_oid;
512 const char *ref_name;
513 int forced_update;
514
515 if (report && report->old_oid)
516 old_oid = report->old_oid;
517 else
518 old_oid = &ref->old_oid;
519 if (report && report->new_oid)
520 new_oid = report->new_oid;
521 else
522 new_oid = &ref->new_oid;
523 if (report && report->forced_update)
524 forced_update = report->forced_update;
525 else
526 forced_update = ref->forced_update;
527 if (report && report->ref_name)
528 ref_name = report->ref_name;
529 else
530 ref_name = ref->name;
531
532 if (ref->deletion)
533 print_ref_status('-', "[deleted]", ref, NULL, NULL,
534 report, porcelain, summary_width);
535 else if (is_null_oid(old_oid))
536 print_ref_status('*',
537 (starts_with(ref_name, "refs/tags/")
538 ? "[new tag]"
539 : (starts_with(ref_name, "refs/heads/")
540 ? "[new branch]"
541 : "[new reference]")),
542 ref, ref->peer_ref, NULL,
543 report, porcelain, summary_width);
544 else {
545 struct strbuf quickref = STRBUF_INIT;
546 char type;
547 const char *msg;
548
549 strbuf_add_unique_abbrev(&quickref, old_oid,
550 DEFAULT_ABBREV);
551 if (forced_update) {
552 strbuf_addstr(&quickref, "...");
553 type = '+';
554 msg = "forced update";
555 } else {
556 strbuf_addstr(&quickref, "..");
557 type = ' ';
558 msg = NULL;
559 }
560 strbuf_add_unique_abbrev(&quickref, new_oid,
561 DEFAULT_ABBREV);
562
563 print_ref_status(type, quickref.buf, ref, ref->peer_ref, msg,
564 report, porcelain, summary_width);
565 strbuf_release(&quickref);
566 }
567 }
568
569 static int print_one_push_report(struct ref *ref, const char *dest, int count,
570 struct ref_push_report *report,
571 int porcelain, int summary_width)
572 {
573 if (!count) {
574 char *url = transport_anonymize_url(dest);
575 fprintf(porcelain ? stdout : stderr, "To %s\n", url);
576 free(url);
577 }
578
579 switch(ref->status) {
580 case REF_STATUS_NONE:
581 print_ref_status('X', "[no match]", ref, NULL, NULL,
582 report, porcelain, summary_width);
583 break;
584 case REF_STATUS_REJECT_NODELETE:
585 print_ref_status('!', "[rejected]", ref, NULL,
586 "remote does not support deleting refs",
587 report, porcelain, summary_width);
588 break;
589 case REF_STATUS_UPTODATE:
590 print_ref_status('=', "[up to date]", ref,
591 ref->peer_ref, NULL,
592 report, porcelain, summary_width);
593 break;
594 case REF_STATUS_REJECT_NONFASTFORWARD:
595 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
596 "non-fast-forward",
597 report, porcelain, summary_width);
598 break;
599 case REF_STATUS_REJECT_ALREADY_EXISTS:
600 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
601 "already exists",
602 report, porcelain, summary_width);
603 break;
604 case REF_STATUS_REJECT_FETCH_FIRST:
605 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
606 "fetch first",
607 report, porcelain, summary_width);
608 break;
609 case REF_STATUS_REJECT_NEEDS_FORCE:
610 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
611 "needs force",
612 report, porcelain, summary_width);
613 break;
614 case REF_STATUS_REJECT_STALE:
615 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
616 "stale info",
617 report, porcelain, summary_width);
618 break;
619 case REF_STATUS_REJECT_SHALLOW:
620 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
621 "new shallow roots not allowed",
622 report, porcelain, summary_width);
623 break;
624 case REF_STATUS_REMOTE_REJECT:
625 print_ref_status('!', "[remote rejected]", ref,
626 ref->deletion ? NULL : ref->peer_ref,
627 ref->remote_status,
628 report, porcelain, summary_width);
629 break;
630 case REF_STATUS_EXPECTING_REPORT:
631 print_ref_status('!', "[remote failure]", ref,
632 ref->deletion ? NULL : ref->peer_ref,
633 "remote failed to report status",
634 report, porcelain, summary_width);
635 break;
636 case REF_STATUS_ATOMIC_PUSH_FAILED:
637 print_ref_status('!', "[rejected]", ref, ref->peer_ref,
638 "atomic push failed",
639 report, porcelain, summary_width);
640 break;
641 case REF_STATUS_OK:
642 print_ok_ref_status(ref, report, porcelain, summary_width);
643 break;
644 }
645
646 return 1;
647 }
648
649 static int print_one_push_status(struct ref *ref, const char *dest, int count,
650 int porcelain, int summary_width)
651 {
652 struct ref_push_report *report;
653 int n = 0;
654
655 if (!ref->report)
656 return print_one_push_report(ref, dest, count,
657 NULL, porcelain, summary_width);
658
659 for (report = ref->report; report; report = report->next)
660 print_one_push_report(ref, dest, count + n++,
661 report, porcelain, summary_width);
662 return n;
663 }
664
665 static int measure_abbrev(const struct object_id *oid, int sofar)
666 {
667 char hex[GIT_MAX_HEXSZ + 1];
668 int w = find_unique_abbrev_r(hex, oid, DEFAULT_ABBREV);
669
670 return (w < sofar) ? sofar : w;
671 }
672
673 int transport_summary_width(const struct ref *refs)
674 {
675 int maxw = -1;
676
677 for (; refs; refs = refs->next) {
678 maxw = measure_abbrev(&refs->old_oid, maxw);
679 maxw = measure_abbrev(&refs->new_oid, maxw);
680 }
681 if (maxw < 0)
682 maxw = FALLBACK_DEFAULT_ABBREV;
683 return (2 * maxw + 3);
684 }
685
686 void transport_print_push_status(const char *dest, struct ref *refs,
687 int verbose, int porcelain, unsigned int *reject_reasons)
688 {
689 struct ref *ref;
690 int n = 0;
691 char *head;
692 int summary_width = transport_summary_width(refs);
693
694 if (transport_color_config() < 0)
695 warning(_("could not parse transport.color.* config"));
696
697 head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
698
699 if (verbose) {
700 for (ref = refs; ref; ref = ref->next)
701 if (ref->status == REF_STATUS_UPTODATE)
702 n += print_one_push_status(ref, dest, n,
703 porcelain, summary_width);
704 }
705
706 for (ref = refs; ref; ref = ref->next)
707 if (ref->status == REF_STATUS_OK)
708 n += print_one_push_status(ref, dest, n,
709 porcelain, summary_width);
710
711 *reject_reasons = 0;
712 for (ref = refs; ref; ref = ref->next) {
713 if (ref->status != REF_STATUS_NONE &&
714 ref->status != REF_STATUS_UPTODATE &&
715 ref->status != REF_STATUS_OK)
716 n += print_one_push_status(ref, dest, n,
717 porcelain, summary_width);
718 if (ref->status == REF_STATUS_REJECT_NONFASTFORWARD) {
719 if (head != NULL && !strcmp(head, ref->name))
720 *reject_reasons |= REJECT_NON_FF_HEAD;
721 else
722 *reject_reasons |= REJECT_NON_FF_OTHER;
723 } else if (ref->status == REF_STATUS_REJECT_ALREADY_EXISTS) {
724 *reject_reasons |= REJECT_ALREADY_EXISTS;
725 } else if (ref->status == REF_STATUS_REJECT_FETCH_FIRST) {
726 *reject_reasons |= REJECT_FETCH_FIRST;
727 } else if (ref->status == REF_STATUS_REJECT_NEEDS_FORCE) {
728 *reject_reasons |= REJECT_NEEDS_FORCE;
729 }
730 }
731 free(head);
732 }
733
734 static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
735 {
736 struct git_transport_data *data = transport->data;
737 struct send_pack_args args;
738 int ret = 0;
739
740 if (transport_color_config() < 0)
741 return -1;
742
743 if (!data->got_remote_heads)
744 get_refs_via_connect(transport, 1, NULL);
745
746 memset(&args, 0, sizeof(args));
747 args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
748 args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
749 args.use_thin_pack = data->options.thin;
750 args.verbose = (transport->verbose > 0);
751 args.quiet = (transport->verbose < 0);
752 args.progress = transport->progress;
753 args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
754 args.porcelain = !!(flags & TRANSPORT_PUSH_PORCELAIN);
755 args.atomic = !!(flags & TRANSPORT_PUSH_ATOMIC);
756 args.push_options = transport->push_options;
757 args.url = transport->url;
758
759 if (flags & TRANSPORT_PUSH_CERT_ALWAYS)
760 args.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
761 else if (flags & TRANSPORT_PUSH_CERT_IF_ASKED)
762 args.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
763 else
764 args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
765
766 switch (data->version) {
767 case protocol_v2:
768 die(_("support for protocol v2 not implemented yet"));
769 break;
770 case protocol_v1:
771 case protocol_v0:
772 ret = send_pack(&args, data->fd, data->conn, remote_refs,
773 &data->extra_have);
774 break;
775 case protocol_unknown_version:
776 BUG("unknown protocol version");
777 }
778
779 close(data->fd[1]);
780 close(data->fd[0]);
781 /*
782 * Atomic push may abort the connection early and close the pipe,
783 * which may cause an error for `finish_connect()`. Ignore this error
784 * for atomic git-push.
785 */
786 if (ret || args.atomic)
787 finish_connect(data->conn);
788 else
789 ret = finish_connect(data->conn);
790 data->conn = NULL;
791 data->got_remote_heads = 0;
792
793 return ret;
794 }
795
796 static int connect_git(struct transport *transport, const char *name,
797 const char *executable, int fd[2])
798 {
799 struct git_transport_data *data = transport->data;
800 data->conn = git_connect(data->fd, transport->url,
801 executable, 0);
802 fd[0] = data->fd[0];
803 fd[1] = data->fd[1];
804 return 0;
805 }
806
807 static int disconnect_git(struct transport *transport)
808 {
809 struct git_transport_data *data = transport->data;
810 if (data->conn) {
811 if (data->got_remote_heads && !transport->stateless_rpc)
812 packet_flush(data->fd[1]);
813 close(data->fd[0]);
814 close(data->fd[1]);
815 finish_connect(data->conn);
816 }
817
818 free(data);
819 return 0;
820 }
821
822 static struct transport_vtable taken_over_vtable = {
823 NULL,
824 get_refs_via_connect,
825 fetch_refs_via_pack,
826 git_transport_push,
827 NULL,
828 disconnect_git
829 };
830
831 void transport_take_over(struct transport *transport,
832 struct child_process *child)
833 {
834 struct git_transport_data *data;
835
836 if (!transport->smart_options)
837 BUG("taking over transport requires non-NULL "
838 "smart_options field.");
839
840 data = xcalloc(1, sizeof(*data));
841 data->options = *transport->smart_options;
842 data->conn = child;
843 data->fd[0] = data->conn->out;
844 data->fd[1] = data->conn->in;
845 data->got_remote_heads = 0;
846 transport->data = data;
847
848 transport->vtable = &taken_over_vtable;
849 transport->smart_options = &(data->options);
850
851 transport->cannot_reuse = 1;
852 }
853
854 static int is_file(const char *url)
855 {
856 struct stat buf;
857 if (stat(url, &buf))
858 return 0;
859 return S_ISREG(buf.st_mode);
860 }
861
862 static int external_specification_len(const char *url)
863 {
864 return strchr(url, ':') - url;
865 }
866
867 static const struct string_list *protocol_whitelist(void)
868 {
869 static int enabled = -1;
870 static struct string_list allowed = STRING_LIST_INIT_DUP;
871
872 if (enabled < 0) {
873 const char *v = getenv("GIT_ALLOW_PROTOCOL");
874 if (v) {
875 string_list_split(&allowed, v, ':', -1);
876 string_list_sort(&allowed);
877 enabled = 1;
878 } else {
879 enabled = 0;
880 }
881 }
882
883 return enabled ? &allowed : NULL;
884 }
885
886 enum protocol_allow_config {
887 PROTOCOL_ALLOW_NEVER = 0,
888 PROTOCOL_ALLOW_USER_ONLY,
889 PROTOCOL_ALLOW_ALWAYS
890 };
891
892 static enum protocol_allow_config parse_protocol_config(const char *key,
893 const char *value)
894 {
895 if (!strcasecmp(value, "always"))
896 return PROTOCOL_ALLOW_ALWAYS;
897 else if (!strcasecmp(value, "never"))
898 return PROTOCOL_ALLOW_NEVER;
899 else if (!strcasecmp(value, "user"))
900 return PROTOCOL_ALLOW_USER_ONLY;
901
902 die(_("unknown value for config '%s': %s"), key, value);
903 }
904
905 static enum protocol_allow_config get_protocol_config(const char *type)
906 {
907 char *key = xstrfmt("protocol.%s.allow", type);
908 char *value;
909
910 /* first check the per-protocol config */
911 if (!git_config_get_string(key, &value)) {
912 enum protocol_allow_config ret =
913 parse_protocol_config(key, value);
914 free(key);
915 free(value);
916 return ret;
917 }
918 free(key);
919
920 /* if defined, fallback to user-defined default for unknown protocols */
921 if (!git_config_get_string("protocol.allow", &value)) {
922 enum protocol_allow_config ret =
923 parse_protocol_config("protocol.allow", value);
924 free(value);
925 return ret;
926 }
927
928 /* fallback to built-in defaults */
929 /* known safe */
930 if (!strcmp(type, "http") ||
931 !strcmp(type, "https") ||
932 !strcmp(type, "git") ||
933 !strcmp(type, "ssh") ||
934 !strcmp(type, "file"))
935 return PROTOCOL_ALLOW_ALWAYS;
936
937 /* known scary; err on the side of caution */
938 if (!strcmp(type, "ext"))
939 return PROTOCOL_ALLOW_NEVER;
940
941 /* unknown; by default let them be used only directly by the user */
942 return PROTOCOL_ALLOW_USER_ONLY;
943 }
944
945 int is_transport_allowed(const char *type, int from_user)
946 {
947 const struct string_list *whitelist = protocol_whitelist();
948 if (whitelist)
949 return string_list_has_string(whitelist, type);
950
951 switch (get_protocol_config(type)) {
952 case PROTOCOL_ALLOW_ALWAYS:
953 return 1;
954 case PROTOCOL_ALLOW_NEVER:
955 return 0;
956 case PROTOCOL_ALLOW_USER_ONLY:
957 if (from_user < 0)
958 from_user = git_env_bool("GIT_PROTOCOL_FROM_USER", 1);
959 return from_user;
960 }
961
962 BUG("invalid protocol_allow_config type");
963 }
964
965 void transport_check_allowed(const char *type)
966 {
967 if (!is_transport_allowed(type, -1))
968 die(_("transport '%s' not allowed"), type);
969 }
970
971 static struct transport_vtable bundle_vtable = {
972 NULL,
973 get_refs_from_bundle,
974 fetch_refs_from_bundle,
975 NULL,
976 NULL,
977 close_bundle
978 };
979
980 static struct transport_vtable builtin_smart_vtable = {
981 NULL,
982 get_refs_via_connect,
983 fetch_refs_via_pack,
984 git_transport_push,
985 connect_git,
986 disconnect_git
987 };
988
989 struct transport *transport_get(struct remote *remote, const char *url)
990 {
991 const char *helper;
992 struct transport *ret = xcalloc(1, sizeof(*ret));
993
994 ret->progress = isatty(2);
995
996 if (!remote)
997 BUG("No remote provided to transport_get()");
998
999 ret->got_remote_refs = 0;
1000 ret->remote = remote;
1001 helper = remote->foreign_vcs;
1002
1003 if (!url && remote->url)
1004 url = remote->url[0];
1005 ret->url = url;
1006
1007 /* maybe it is a foreign URL? */
1008 if (url) {
1009 const char *p = url;
1010
1011 while (is_urlschemechar(p == url, *p))
1012 p++;
1013 if (starts_with(p, "::"))
1014 helper = xstrndup(url, p - url);
1015 }
1016
1017 if (helper) {
1018 transport_helper_init(ret, helper);
1019 } else if (starts_with(url, "rsync:")) {
1020 die(_("git-over-rsync is no longer supported"));
1021 } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
1022 struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
1023 transport_check_allowed("file");
1024 ret->data = data;
1025 ret->vtable = &bundle_vtable;
1026 ret->smart_options = NULL;
1027 } else if (!is_url(url)
1028 || starts_with(url, "file://")
1029 || starts_with(url, "git://")
1030 || starts_with(url, "ssh://")
1031 || starts_with(url, "git+ssh://") /* deprecated - do not use */
1032 || starts_with(url, "ssh+git://") /* deprecated - do not use */
1033 ) {
1034 /*
1035 * These are builtin smart transports; "allowed" transports
1036 * will be checked individually in git_connect.
1037 */
1038 struct git_transport_data *data = xcalloc(1, sizeof(*data));
1039 ret->data = data;
1040 ret->vtable = &builtin_smart_vtable;
1041 ret->smart_options = &(data->options);
1042
1043 data->conn = NULL;
1044 data->got_remote_heads = 0;
1045 } else {
1046 /* Unknown protocol in URL. Pass to external handler. */
1047 int len = external_specification_len(url);
1048 char *handler = xmemdupz(url, len);
1049 transport_helper_init(ret, handler);
1050 }
1051
1052 if (ret->smart_options) {
1053 ret->smart_options->thin = 1;
1054 ret->smart_options->uploadpack = "git-upload-pack";
1055 if (remote->uploadpack)
1056 ret->smart_options->uploadpack = remote->uploadpack;
1057 ret->smart_options->receivepack = "git-receive-pack";
1058 if (remote->receivepack)
1059 ret->smart_options->receivepack = remote->receivepack;
1060 }
1061
1062 return ret;
1063 }
1064
1065 int transport_set_option(struct transport *transport,
1066 const char *name, const char *value)
1067 {
1068 int git_reports = 1, protocol_reports = 1;
1069
1070 if (transport->smart_options)
1071 git_reports = set_git_option(transport->smart_options,
1072 name, value);
1073
1074 if (transport->vtable->set_option)
1075 protocol_reports = transport->vtable->set_option(transport,
1076 name, value);
1077
1078 /* If either report is 0, report 0 (success). */
1079 if (!git_reports || !protocol_reports)
1080 return 0;
1081 /* If either reports -1 (invalid value), report -1. */
1082 if ((git_reports == -1) || (protocol_reports == -1))
1083 return -1;
1084 /* Otherwise if both report unknown, report unknown. */
1085 return 1;
1086 }
1087
1088 void transport_set_verbosity(struct transport *transport, int verbosity,
1089 int force_progress)
1090 {
1091 if (verbosity >= 1)
1092 transport->verbose = verbosity <= 3 ? verbosity : 3;
1093 if (verbosity < 0)
1094 transport->verbose = -1;
1095
1096 /**
1097 * Rules used to determine whether to report progress (processing aborts
1098 * when a rule is satisfied):
1099 *
1100 * . Report progress, if force_progress is 1 (ie. --progress).
1101 * . Don't report progress, if force_progress is 0 (ie. --no-progress).
1102 * . Don't report progress, if verbosity < 0 (ie. -q/--quiet ).
1103 * . Report progress if isatty(2) is 1.
1104 **/
1105 if (force_progress >= 0)
1106 transport->progress = !!force_progress;
1107 else
1108 transport->progress = verbosity >= 0 && isatty(2);
1109 }
1110
1111 static void die_with_unpushed_submodules(struct string_list *needs_pushing)
1112 {
1113 int i;
1114
1115 fprintf(stderr, _("The following submodule paths contain changes that can\n"
1116 "not be found on any remote:\n"));
1117 for (i = 0; i < needs_pushing->nr; i++)
1118 fprintf(stderr, " %s\n", needs_pushing->items[i].string);
1119 fprintf(stderr, _("\nPlease try\n\n"
1120 " git push --recurse-submodules=on-demand\n\n"
1121 "or cd to the path and use\n\n"
1122 " git push\n\n"
1123 "to push them to a remote.\n\n"));
1124
1125 string_list_clear(needs_pushing, 0);
1126
1127 die(_("Aborting."));
1128 }
1129
1130 static int run_pre_push_hook(struct transport *transport,
1131 struct ref *remote_refs)
1132 {
1133 int ret = 0, x;
1134 struct ref *r;
1135 struct child_process proc = CHILD_PROCESS_INIT;
1136 struct strbuf buf;
1137 const char *argv[4];
1138
1139 if (!(argv[0] = find_hook("pre-push")))
1140 return 0;
1141
1142 argv[1] = transport->remote->name;
1143 argv[2] = transport->url;
1144 argv[3] = NULL;
1145
1146 proc.argv = argv;
1147 proc.in = -1;
1148 proc.trace2_hook_name = "pre-push";
1149
1150 if (start_command(&proc)) {
1151 finish_command(&proc);
1152 return -1;
1153 }
1154
1155 sigchain_push(SIGPIPE, SIG_IGN);
1156
1157 strbuf_init(&buf, 256);
1158
1159 for (r = remote_refs; r; r = r->next) {
1160 if (!r->peer_ref) continue;
1161 if (r->status == REF_STATUS_REJECT_NONFASTFORWARD) continue;
1162 if (r->status == REF_STATUS_REJECT_STALE) continue;
1163 if (r->status == REF_STATUS_UPTODATE) continue;
1164
1165 strbuf_reset(&buf);
1166 strbuf_addf( &buf, "%s %s %s %s\n",
1167 r->peer_ref->name, oid_to_hex(&r->new_oid),
1168 r->name, oid_to_hex(&r->old_oid));
1169
1170 if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
1171 /* We do not mind if a hook does not read all refs. */
1172 if (errno != EPIPE)
1173 ret = -1;
1174 break;
1175 }
1176 }
1177
1178 strbuf_release(&buf);
1179
1180 x = close(proc.in);
1181 if (!ret)
1182 ret = x;
1183
1184 sigchain_pop(SIGPIPE);
1185
1186 x = finish_command(&proc);
1187 if (!ret)
1188 ret = x;
1189
1190 return ret;
1191 }
1192
1193 int transport_push(struct repository *r,
1194 struct transport *transport,
1195 struct refspec *rs, int flags,
1196 unsigned int *reject_reasons)
1197 {
1198 *reject_reasons = 0;
1199
1200 if (transport_color_config() < 0)
1201 return -1;
1202
1203 if (transport->vtable->push_refs) {
1204 struct ref *remote_refs;
1205 struct ref *local_refs = get_local_heads();
1206 int match_flags = MATCH_REFS_NONE;
1207 int verbose = (transport->verbose > 0);
1208 int quiet = (transport->verbose < 0);
1209 int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
1210 int pretend = flags & TRANSPORT_PUSH_DRY_RUN;
1211 int push_ret, ret, err;
1212 struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
1213
1214 if (check_push_refs(local_refs, rs) < 0)
1215 return -1;
1216
1217 refspec_ref_prefixes(rs, &ref_prefixes);
1218
1219 trace2_region_enter("transport_push", "get_refs_list", r);
1220 remote_refs = transport->vtable->get_refs_list(transport, 1,
1221 &ref_prefixes);
1222 trace2_region_leave("transport_push", "get_refs_list", r);
1223
1224 argv_array_clear(&ref_prefixes);
1225
1226 if (flags & TRANSPORT_PUSH_ALL)
1227 match_flags |= MATCH_REFS_ALL;
1228 if (flags & TRANSPORT_PUSH_MIRROR)
1229 match_flags |= MATCH_REFS_MIRROR;
1230 if (flags & TRANSPORT_PUSH_PRUNE)
1231 match_flags |= MATCH_REFS_PRUNE;
1232 if (flags & TRANSPORT_PUSH_FOLLOW_TAGS)
1233 match_flags |= MATCH_REFS_FOLLOW_TAGS;
1234
1235 if (match_push_refs(local_refs, &remote_refs, rs, match_flags))
1236 return -1;
1237
1238 if (transport->smart_options &&
1239 transport->smart_options->cas &&
1240 !is_empty_cas(transport->smart_options->cas))
1241 apply_push_cas(transport->smart_options->cas,
1242 transport->remote, remote_refs);
1243
1244 set_ref_status_for_push(remote_refs,
1245 flags & TRANSPORT_PUSH_MIRROR,
1246 flags & TRANSPORT_PUSH_FORCE);
1247
1248 if (!(flags & TRANSPORT_PUSH_NO_HOOK))
1249 if (run_pre_push_hook(transport, remote_refs))
1250 return -1;
1251
1252 if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1253 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1254 !is_bare_repository()) {
1255 struct ref *ref = remote_refs;
1256 struct oid_array commits = OID_ARRAY_INIT;
1257
1258 trace2_region_enter("transport_push", "push_submodules", r);
1259 for (; ref; ref = ref->next)
1260 if (!is_null_oid(&ref->new_oid))
1261 oid_array_append(&commits,
1262 &ref->new_oid);
1263
1264 if (!push_unpushed_submodules(r,
1265 &commits,
1266 transport->remote,
1267 rs,
1268 transport->push_options,
1269 pretend)) {
1270 oid_array_clear(&commits);
1271 trace2_region_leave("transport_push", "push_submodules", r);
1272 die(_("failed to push all needed submodules"));
1273 }
1274 oid_array_clear(&commits);
1275 trace2_region_leave("transport_push", "push_submodules", r);
1276 }
1277
1278 if (((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) ||
1279 ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
1280 TRANSPORT_RECURSE_SUBMODULES_ONLY)) &&
1281 !pretend)) && !is_bare_repository()) {
1282 struct ref *ref = remote_refs;
1283 struct string_list needs_pushing = STRING_LIST_INIT_DUP;
1284 struct oid_array commits = OID_ARRAY_INIT;
1285
1286 trace2_region_enter("transport_push", "check_submodules", r);
1287 for (; ref; ref = ref->next)
1288 if (!is_null_oid(&ref->new_oid))
1289 oid_array_append(&commits,
1290 &ref->new_oid);
1291
1292 if (find_unpushed_submodules(r,
1293 &commits,
1294 transport->remote->name,
1295 &needs_pushing)) {
1296 oid_array_clear(&commits);
1297 trace2_region_leave("transport_push", "check_submodules", r);
1298 die_with_unpushed_submodules(&needs_pushing);
1299 }
1300 string_list_clear(&needs_pushing, 0);
1301 oid_array_clear(&commits);
1302 trace2_region_leave("transport_push", "check_submodules", r);
1303 }
1304
1305 if (!(flags & TRANSPORT_RECURSE_SUBMODULES_ONLY)) {
1306 trace2_region_enter("transport_push", "push_refs", r);
1307 push_ret = transport->vtable->push_refs(transport, remote_refs, flags);
1308 trace2_region_leave("transport_push", "push_refs", r);
1309 } else
1310 push_ret = 0;
1311 err = push_had_errors(remote_refs);
1312 ret = push_ret | err;
1313
1314 if (!quiet || err)
1315 transport_print_push_status(transport->url, remote_refs,
1316 verbose | porcelain, porcelain,
1317 reject_reasons);
1318
1319 if (flags & TRANSPORT_PUSH_SET_UPSTREAM)
1320 set_upstreams(transport, remote_refs, pretend);
1321
1322 if (!(flags & (TRANSPORT_PUSH_DRY_RUN |
1323 TRANSPORT_RECURSE_SUBMODULES_ONLY))) {
1324 struct ref *ref;
1325 for (ref = remote_refs; ref; ref = ref->next)
1326 transport_update_tracking_ref(transport->remote, ref, verbose);
1327 }
1328
1329 if (porcelain && !push_ret)
1330 puts("Done");
1331 else if (!quiet && !ret && !transport_refs_pushed(remote_refs))
1332 fprintf(stderr, "Everything up-to-date\n");
1333
1334 return ret;
1335 }
1336 return 1;
1337 }
1338
1339 const struct ref *transport_get_remote_refs(struct transport *transport,
1340 const struct argv_array *ref_prefixes)
1341 {
1342 if (!transport->got_remote_refs) {
1343 transport->remote_refs =
1344 transport->vtable->get_refs_list(transport, 0,
1345 ref_prefixes);
1346 transport->got_remote_refs = 1;
1347 }
1348
1349 return transport->remote_refs;
1350 }
1351
1352 int transport_fetch_refs(struct transport *transport, struct ref *refs)
1353 {
1354 int rc;
1355 int nr_heads = 0, nr_alloc = 0, nr_refs = 0;
1356 struct ref **heads = NULL;
1357 struct ref *rm;
1358
1359 for (rm = refs; rm; rm = rm->next) {
1360 nr_refs++;
1361 if (rm->peer_ref &&
1362 !is_null_oid(&rm->old_oid) &&
1363 oideq(&rm->peer_ref->old_oid, &rm->old_oid))
1364 continue;
1365 ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
1366 heads[nr_heads++] = rm;
1367 }
1368
1369 if (!nr_heads) {
1370 /*
1371 * When deepening of a shallow repository is requested,
1372 * then local and remote refs are likely to still be equal.
1373 * Just feed them all to the fetch method in that case.
1374 * This condition shouldn't be met in a non-deepening fetch
1375 * (see builtin/fetch.c:quickfetch()).
1376 */
1377 ALLOC_ARRAY(heads, nr_refs);
1378 for (rm = refs; rm; rm = rm->next)
1379 heads[nr_heads++] = rm;
1380 }
1381
1382 rc = transport->vtable->fetch(transport, nr_heads, heads);
1383
1384 free(heads);
1385 return rc;
1386 }
1387
1388 void transport_unlock_pack(struct transport *transport)
1389 {
1390 if (transport->pack_lockfile) {
1391 unlink_or_warn(transport->pack_lockfile);
1392 FREE_AND_NULL(transport->pack_lockfile);
1393 }
1394 }
1395
1396 int transport_connect(struct transport *transport, const char *name,
1397 const char *exec, int fd[2])
1398 {
1399 if (transport->vtable->connect)
1400 return transport->vtable->connect(transport, name, exec, fd);
1401 else
1402 die(_("operation not supported by protocol"));
1403 }
1404
1405 int transport_disconnect(struct transport *transport)
1406 {
1407 int ret = 0;
1408 if (transport->vtable->disconnect)
1409 ret = transport->vtable->disconnect(transport);
1410 free(transport);
1411 return ret;
1412 }
1413
1414 /*
1415 * Strip username (and password) from a URL and return
1416 * it in a newly allocated string.
1417 */
1418 char *transport_anonymize_url(const char *url)
1419 {
1420 char *scheme_prefix, *anon_part;
1421 size_t anon_len, prefix_len = 0;
1422
1423 anon_part = strchr(url, '@');
1424 if (url_is_local_not_ssh(url) || !anon_part)
1425 goto literal_copy;
1426
1427 anon_len = strlen(++anon_part);
1428 scheme_prefix = strstr(url, "://");
1429 if (!scheme_prefix) {
1430 if (!strchr(anon_part, ':'))
1431 /* cannot be "me@there:/path/name" */
1432 goto literal_copy;
1433 } else {
1434 const char *cp;
1435 /* make sure scheme is reasonable */
1436 for (cp = url; cp < scheme_prefix; cp++) {
1437 switch (*cp) {
1438 /* RFC 1738 2.1 */
1439 case '+': case '.': case '-':
1440 break; /* ok */
1441 default:
1442 if (isalnum(*cp))
1443 break;
1444 /* it isn't */
1445 goto literal_copy;
1446 }
1447 }
1448 /* @ past the first slash does not count */
1449 cp = strchr(scheme_prefix + 3, '/');
1450 if (cp && cp < anon_part)
1451 goto literal_copy;
1452 prefix_len = scheme_prefix - url + 3;
1453 }
1454 return xstrfmt("%.*s%.*s", (int)prefix_len, url,
1455 (int)anon_len, anon_part);
1456 literal_copy:
1457 return xstrdup(url);
1458 }
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