1 /*
2 * externals.c: handle the svn:externals property
3 *
4 * ====================================================================
5 * Licensed to the Apache Software Foundation (ASF) under one
6 * or more contributor license agreements. See the NOTICE file
7 * distributed with this work for additional information
8 * regarding copyright ownership. The ASF licenses this file
9 * to you under the Apache License, Version 2.0 (the
10 * "License"); you may not use this file except in compliance
11 * with the License. You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing,
16 * software distributed under the License is distributed on an
17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
18 * KIND, either express or implied. See the License for the
19 * specific language governing permissions and limitations
20 * under the License.
21 * ====================================================================
22 */
23
24 /* ==================================================================== */
25
26
27
28 /*** Includes. ***/
29
30 #include <apr_uri.h>
31 #include "svn_hash.h"
32 #include "svn_wc.h"
33 #include "svn_pools.h"
34 #include "svn_client.h"
35 #include "svn_types.h"
36 #include "svn_error.h"
37 #include "svn_dirent_uri.h"
38 #include "svn_path.h"
39 #include "svn_props.h"
40 #include "svn_config.h"
41 #include "client.h"
42
43 #include "svn_private_config.h"
44 #include "private/svn_wc_private.h"
45
46
47 /* Remove the directory at LOCAL_ABSPATH from revision control, and do the
48 * same to any revision controlled directories underneath LOCAL_ABSPATH
49 * (including directories not referred to by parent svn administrative areas);
50 * then if LOCAL_ABSPATH is empty afterwards, remove it, else rename it to a
51 * unique name in the same parent directory.
52 *
53 * Pass CANCEL_FUNC, CANCEL_BATON to svn_wc_remove_from_revision_control.
54 *
55 * Use SCRATCH_POOL for all temporary allocation.
56 */
57 static svn_error_t *
relegate_dir_external(svn_wc_context_t * wc_ctx,const char * wri_abspath,const char * local_abspath,svn_cancel_func_t cancel_func,void * cancel_baton,svn_wc_notify_func2_t notify_func,void * notify_baton,apr_pool_t * scratch_pool)58 relegate_dir_external(svn_wc_context_t *wc_ctx,
59 const char *wri_abspath,
60 const char *local_abspath,
61 svn_cancel_func_t cancel_func,
62 void *cancel_baton,
63 svn_wc_notify_func2_t notify_func,
64 void *notify_baton,
65 apr_pool_t *scratch_pool)
66 {
67 svn_error_t *err = SVN_NO_ERROR;
68
69 SVN_ERR(svn_wc__acquire_write_lock(NULL, wc_ctx, local_abspath,
70 FALSE, scratch_pool, scratch_pool));
71
72 err = svn_wc__external_remove(wc_ctx, wri_abspath, local_abspath, FALSE,
73 cancel_func, cancel_baton, scratch_pool);
74 if (err && (err->apr_err == SVN_ERR_WC_LEFT_LOCAL_MOD))
75 {
76 const char *parent_dir;
77 const char *dirname;
78 const char *new_path;
79
80 svn_error_clear(err);
81 err = SVN_NO_ERROR;
82
83 svn_dirent_split(&parent_dir, &dirname, local_abspath, scratch_pool);
84
85 /* Reserve the new dir name. */
86 SVN_ERR(svn_io_open_uniquely_named(NULL, &new_path,
87 parent_dir, dirname, ".OLD",
88 svn_io_file_del_none,
89 scratch_pool, scratch_pool));
90
91 /* Sigh... We must fall ever so slightly from grace.
92
93 Ideally, there would be no window, however brief, when we
94 don't have a reservation on the new name. Unfortunately,
95 at least in the Unix (Linux?) version of apr_file_rename(),
96 you can't rename a directory over a file, because it's just
97 calling stdio rename(), which says:
98
99 ENOTDIR
100 A component used as a directory in oldpath or newpath
101 path is not, in fact, a directory. Or, oldpath is
102 a directory, and newpath exists but is not a directory
103
104 So instead, we get the name, then remove the file (ugh), then
105 rename the directory, hoping that nobody has gotten that name
106 in the meantime -- which would never happen in real life, so
107 no big deal.
108 */
109 /* Do our best, but no biggy if it fails. The rename will fail. */
110 svn_error_clear(svn_io_remove_file2(new_path, TRUE, scratch_pool));
111
112 /* Rename. If this is still a working copy we should use the working
113 copy rename function (to release open handles) */
114 err = svn_wc__rename_wc(wc_ctx, local_abspath, new_path,
115 scratch_pool);
116
117 if (err && err->apr_err == SVN_ERR_WC_PATH_UNEXPECTED_STATUS)
118 {
119 svn_error_clear(err);
120
121 /* And if it is no longer a working copy, we should just rename
122 it */
123 err = svn_io_file_rename2(local_abspath, new_path, FALSE, scratch_pool);
124 }
125
126 /* ### TODO: We should notify the user about the rename */
127 if (notify_func)
128 {
129 svn_wc_notify_t *notify;
130
131 notify = svn_wc_create_notify(err ? local_abspath : new_path,
132 svn_wc_notify_left_local_modifications,
133 scratch_pool);
134 notify->kind = svn_node_dir;
135 notify->err = err;
136
137 notify_func(notify_baton, notify, scratch_pool);
138 }
139 }
140
141 return svn_error_trace(err);
142 }
143
144 /* Try to update a directory external at PATH to URL at REVISION.
145 Use POOL for temporary allocations, and use the client context CTX. */
146 static svn_error_t *
switch_dir_external(const char * local_abspath,const char * url,const char * url_from_externals_definition,const svn_opt_revision_t * peg_revision,const svn_opt_revision_t * revision,const char * defining_abspath,svn_boolean_t * timestamp_sleep,svn_ra_session_t * ra_session,svn_client_ctx_t * ctx,apr_pool_t * pool)147 switch_dir_external(const char *local_abspath,
148 const char *url,
149 const char *url_from_externals_definition,
150 const svn_opt_revision_t *peg_revision,
151 const svn_opt_revision_t *revision,
152 const char *defining_abspath,
153 svn_boolean_t *timestamp_sleep,
154 svn_ra_session_t *ra_session,
155 svn_client_ctx_t *ctx,
156 apr_pool_t *pool)
157 {
158 svn_node_kind_t kind;
159 svn_error_t *err;
160 svn_revnum_t external_peg_rev = SVN_INVALID_REVNUM;
161 svn_revnum_t external_rev = SVN_INVALID_REVNUM;
162 apr_pool_t *subpool = svn_pool_create(pool);
163 const char *repos_root_url;
164 const char *repos_uuid;
165
166 SVN_ERR_ASSERT(svn_dirent_is_absolute(local_abspath));
167
168 if (peg_revision->kind == svn_opt_revision_number)
169 external_peg_rev = peg_revision->value.number;
170
171 if (revision->kind == svn_opt_revision_number)
172 external_rev = revision->value.number;
173
174 /*
175 * The code below assumes existing versioned paths are *not* part of
176 * the external's defining working copy.
177 * The working copy library does not support registering externals
178 * on top of existing BASE nodes and will error out if we try.
179 * So if the external target is part of the defining working copy's
180 * BASE tree, don't attempt to create the external. Doing so would
181 * leave behind a switched path instead of an external (since the
182 * switch succeeds but registration of the external in the DB fails).
183 * The working copy then cannot be updated until the path is switched back.
184 * See issue #4085.
185 */
186 SVN_ERR(svn_wc__node_get_base(&kind, NULL, NULL,
187 &repos_root_url, &repos_uuid,
188 NULL, ctx->wc_ctx, local_abspath,
189 TRUE, /* ignore_enoent */
190 pool, pool));
191 if (kind != svn_node_unknown)
192 {
193 const char *wcroot_abspath;
194 const char *defining_wcroot_abspath;
195
196 SVN_ERR(svn_wc__get_wcroot(&wcroot_abspath, ctx->wc_ctx,
197 local_abspath, pool, pool));
198 SVN_ERR(svn_wc__get_wcroot(&defining_wcroot_abspath, ctx->wc_ctx,
199 defining_abspath, pool, pool));
200 if (strcmp(wcroot_abspath, defining_wcroot_abspath) == 0)
201 return svn_error_createf(SVN_ERR_WC_PATH_UNEXPECTED_STATUS, NULL,
202 _("The external '%s' defined in %s at '%s' "
203 "cannot be checked out because '%s' is "
204 "already a versioned path."),
205 url_from_externals_definition,
206 SVN_PROP_EXTERNALS,
207 svn_dirent_local_style(defining_abspath,
208 pool),
209 svn_dirent_local_style(local_abspath,
210 pool));
211 }
212
213 /* If path is a directory, try to update/switch to the correct URL
214 and revision. */
215 SVN_ERR(svn_io_check_path(local_abspath, &kind, pool));
216 if (kind == svn_node_dir)
217 {
218 const char *node_url;
219
220 /* Doubles as an "is versioned" check. */
221 err = svn_wc__node_get_url(&node_url, ctx->wc_ctx, local_abspath,
222 pool, subpool);
223 if (err && err->apr_err == SVN_ERR_WC_PATH_NOT_FOUND)
224 {
225 svn_error_clear(err);
226 err = SVN_NO_ERROR;
227 goto relegate;
228 }
229 else if (err)
230 return svn_error_trace(err);
231
232 if (node_url)
233 {
234 svn_boolean_t is_wcroot;
235
236 SVN_ERR(svn_wc__is_wcroot(&is_wcroot, ctx->wc_ctx, local_abspath,
237 pool));
238
239 if (! is_wcroot)
240 {
241 /* This can't be a directory external! */
242
243 err = svn_wc__external_remove(ctx->wc_ctx, defining_abspath,
244 local_abspath,
245 TRUE /* declaration_only */,
246 ctx->cancel_func, ctx->cancel_baton,
247 pool);
248
249 if (err && err->apr_err == SVN_ERR_WC_PATH_NOT_FOUND)
250 {
251 /* New external... No problem that we can't remove it */
252 svn_error_clear(err);
253 err = NULL;
254 }
255 else if (err)
256 return svn_error_trace(err);
257
258 return svn_error_createf(SVN_ERR_WC_PATH_UNEXPECTED_STATUS, NULL,
259 _("The external '%s' defined in %s at '%s' "
260 "cannot be checked out because '%s' is "
261 "already a versioned path."),
262 url_from_externals_definition,
263 SVN_PROP_EXTERNALS,
264 svn_dirent_local_style(defining_abspath,
265 pool),
266 svn_dirent_local_style(local_abspath,
267 pool));
268 }
269
270 /* If we have what appears to be a version controlled
271 subdir, and its top-level URL matches that of our
272 externals definition, perform an update. */
273 if (strcmp(node_url, url) == 0)
274 {
275 SVN_ERR(svn_client__update_internal(NULL, timestamp_sleep,
276 local_abspath,
277 revision, svn_depth_unknown,
278 FALSE, FALSE, FALSE, TRUE,
279 FALSE, TRUE,
280 ra_session, ctx, subpool));
281
282 /* We just decided that this existing directory is an external,
283 so update the external registry with this information, like
284 when checking out an external */
285 SVN_ERR(svn_wc__external_register(ctx->wc_ctx,
286 defining_abspath,
287 local_abspath, svn_node_dir,
288 repos_root_url, repos_uuid,
289 svn_uri_skip_ancestor(repos_root_url,
290 url, pool),
291 external_peg_rev,
292 external_rev,
293 pool));
294
295 svn_pool_destroy(subpool);
296 goto cleanup;
297 }
298
299 /* We'd really prefer not to have to do a brute-force
300 relegation -- blowing away the current external working
301 copy and checking it out anew -- so we'll first see if we
302 can get away with a generally cheaper relocation (if
303 required) and switch-style update.
304
305 To do so, we need to know the repository root URL of the
306 external working copy as it currently sits. */
307 err = svn_wc__node_get_repos_info(NULL, NULL,
308 &repos_root_url, &repos_uuid,
309 ctx->wc_ctx, local_abspath,
310 pool, subpool);
311 if (err)
312 {
313 if (err->apr_err != SVN_ERR_WC_PATH_NOT_FOUND
314 && err->apr_err != SVN_ERR_WC_NOT_WORKING_COPY)
315 return svn_error_trace(err);
316
317 svn_error_clear(err);
318 repos_root_url = NULL;
319 repos_uuid = NULL;
320 }
321
322 if (repos_root_url)
323 {
324 /* If the new external target URL is not obviously a
325 child of the external working copy's current
326 repository root URL... */
327 if (! svn_uri__is_ancestor(repos_root_url, url))
328 {
329 const char *repos_root;
330
331 /* ... then figure out precisely which repository
332 root URL that target URL *is* a child of ... */
333 SVN_ERR(svn_client_get_repos_root(&repos_root, NULL, url,
334 ctx, subpool, subpool));
335
336 /* ... and use that to try to relocate the external
337 working copy to the target location. */
338 err = svn_client_relocate2(local_abspath, repos_root_url,
339 repos_root, FALSE, ctx, subpool);
340
341 /* If the relocation failed because the new URL
342 points to a totally different repository, we've
343 no choice but to relegate and check out a new WC. */
344 if (err
345 && (err->apr_err == SVN_ERR_WC_INVALID_RELOCATION
346 || (err->apr_err
347 == SVN_ERR_CLIENT_INVALID_RELOCATION)))
348 {
349 svn_error_clear(err);
350 goto relegate;
351 }
352 else if (err)
353 return svn_error_trace(err);
354
355 /* If the relocation went without a hitch, we should
356 have a new repository root URL. */
357 repos_root_url = repos_root;
358 }
359
360 SVN_ERR(svn_client__switch_internal(NULL, local_abspath, url,
361 peg_revision, revision,
362 svn_depth_infinity,
363 TRUE, FALSE, FALSE,
364 TRUE /* ignore_ancestry */,
365 timestamp_sleep,
366 ctx, subpool));
367
368 SVN_ERR(svn_wc__external_register(ctx->wc_ctx,
369 defining_abspath,
370 local_abspath, svn_node_dir,
371 repos_root_url, repos_uuid,
372 svn_uri_skip_ancestor(
373 repos_root_url,
374 url, subpool),
375 external_peg_rev,
376 external_rev,
377 subpool));
378
379 svn_pool_destroy(subpool);
380 goto cleanup;
381 }
382 }
383 }
384
385 relegate:
386
387 /* Fall back on removing the WC and checking out a new one. */
388
389 /* Ensure that we don't have any RA sessions or WC locks from failed
390 operations above. */
391 svn_pool_destroy(subpool);
392
393 if (kind == svn_node_dir)
394 {
395 /* Buh-bye, old and busted ... */
396 SVN_ERR(relegate_dir_external(ctx->wc_ctx, defining_abspath,
397 local_abspath,
398 ctx->cancel_func, ctx->cancel_baton,
399 ctx->notify_func2, ctx->notify_baton2,
400 pool));
401 }
402 else
403 {
404 /* The target dir might have multiple components. Guarantee
405 the path leading down to the last component. */
406 const char *parent = svn_dirent_dirname(local_abspath, pool);
407 SVN_ERR(svn_io_make_dir_recursively(parent, pool));
408 }
409
410 /* ... Hello, new hotness. */
411 SVN_ERR(svn_client__checkout_internal(NULL, timestamp_sleep,
412 url, local_abspath, peg_revision,
413 revision, svn_depth_infinity,
414 FALSE, FALSE,
415 ra_session,
416 ctx, pool));
417
418 SVN_ERR(svn_wc__node_get_repos_info(NULL, NULL,
419 &repos_root_url,
420 &repos_uuid,
421 ctx->wc_ctx, local_abspath,
422 pool, pool));
423
424 SVN_ERR(svn_wc__external_register(ctx->wc_ctx,
425 defining_abspath,
426 local_abspath, svn_node_dir,
427 repos_root_url, repos_uuid,
428 svn_uri_skip_ancestor(repos_root_url,
429 url, pool),
430 external_peg_rev,
431 external_rev,
432 pool));
433
434 cleanup:
435 /* Issues #4123 and #4130: We don't need to keep the newly checked
436 out external's DB open. */
437 SVN_ERR(svn_wc__close_db(local_abspath, ctx->wc_ctx, pool));
438
439 return SVN_NO_ERROR;
440 }
441
442 /* Try to update a file external at LOCAL_ABSPATH to SWITCH_LOC. This function
443 assumes caller has a write lock in CTX. Use SCRATCH_POOL for temporary
444 allocations, and use the client context CTX. */
445 static svn_error_t *
switch_file_external(const char * local_abspath,const svn_client__pathrev_t * switch_loc,const char * record_url,const svn_opt_revision_t * record_peg_revision,const svn_opt_revision_t * record_revision,const char * def_dir_abspath,svn_ra_session_t * ra_session,svn_client_ctx_t * ctx,apr_pool_t * scratch_pool)446 switch_file_external(const char *local_abspath,
447 const svn_client__pathrev_t *switch_loc,
448 const char *record_url,
449 const svn_opt_revision_t *record_peg_revision,
450 const svn_opt_revision_t *record_revision,
451 const char *def_dir_abspath,
452 svn_ra_session_t *ra_session,
453 svn_client_ctx_t *ctx,
454 apr_pool_t *scratch_pool)
455 {
456 svn_config_t *cfg = ctx->config
457 ? svn_hash_gets(ctx->config, SVN_CONFIG_CATEGORY_CONFIG)
458 : NULL;
459 svn_boolean_t use_commit_times;
460 const char *diff3_cmd;
461 const char *preserved_exts_str;
462 const apr_array_header_t *preserved_exts;
463 svn_node_kind_t kind, external_kind;
464
465 SVN_ERR_ASSERT(svn_dirent_is_absolute(local_abspath));
466
467 /* See if the user wants last-commit timestamps instead of current ones. */
468 SVN_ERR(svn_config_get_bool(cfg, &use_commit_times,
469 SVN_CONFIG_SECTION_MISCELLANY,
470 SVN_CONFIG_OPTION_USE_COMMIT_TIMES, FALSE));
471
472 /* Get the external diff3, if any. */
473 svn_config_get(cfg, &diff3_cmd, SVN_CONFIG_SECTION_HELPERS,
474 SVN_CONFIG_OPTION_DIFF3_CMD, NULL);
475
476 if (diff3_cmd != NULL)
477 SVN_ERR(svn_path_cstring_to_utf8(&diff3_cmd, diff3_cmd, scratch_pool));
478
479 /* See which files the user wants to preserve the extension of when
480 conflict files are made. */
481 svn_config_get(cfg, &preserved_exts_str, SVN_CONFIG_SECTION_MISCELLANY,
482 SVN_CONFIG_OPTION_PRESERVED_CF_EXTS, "");
483 preserved_exts = *preserved_exts_str
484 ? svn_cstring_split(preserved_exts_str, "\n\r\t\v ", FALSE, scratch_pool)
485 : NULL;
486
487 {
488 const char *wcroot_abspath;
489
490 SVN_ERR(svn_wc__get_wcroot(&wcroot_abspath, ctx->wc_ctx, local_abspath,
491 scratch_pool, scratch_pool));
492
493 /* File externals can only be installed inside the current working copy.
494 So verify if the working copy that contains/will contain the target
495 is the defining abspath, or one of its ancestors */
496
497 if (!svn_dirent_is_ancestor(wcroot_abspath, def_dir_abspath))
498 return svn_error_createf(
499 SVN_ERR_WC_BAD_PATH, NULL,
500 _("Cannot insert a file external defined on '%s' "
501 "into the working copy '%s'."),
502 svn_dirent_local_style(def_dir_abspath,
503 scratch_pool),
504 svn_dirent_local_style(wcroot_abspath,
505 scratch_pool));
506 }
507
508 SVN_ERR(svn_wc_read_kind2(&kind, ctx->wc_ctx, local_abspath,
509 TRUE, FALSE, scratch_pool));
510
511 SVN_ERR(svn_wc__read_external_info(&external_kind, NULL, NULL, NULL, NULL,
512 ctx->wc_ctx, local_abspath, local_abspath,
513 TRUE, scratch_pool, scratch_pool));
514
515 /* If there is a versioned item with this name, ensure it's a file
516 external before working with it. If there is no entry in the
517 working copy, then create an empty file and add it to the working
518 copy. */
519 if (kind != svn_node_none && kind != svn_node_unknown)
520 {
521 if (external_kind != svn_node_file)
522 {
523 return svn_error_createf(
524 SVN_ERR_CLIENT_FILE_EXTERNAL_OVERWRITE_VERSIONED, 0,
525 _("The file external from '%s' cannot overwrite the existing "
526 "versioned item at '%s'"),
527 switch_loc->url,
528 svn_dirent_local_style(local_abspath, scratch_pool));
529 }
530 }
531 else
532 {
533 svn_node_kind_t disk_kind;
534
535 SVN_ERR(svn_io_check_path(local_abspath, &disk_kind, scratch_pool));
536
537 if (disk_kind == svn_node_file || disk_kind == svn_node_dir)
538 return svn_error_createf(SVN_ERR_WC_PATH_FOUND, NULL,
539 _("The file external '%s' can not be "
540 "created because the node exists."),
541 svn_dirent_local_style(local_abspath,
542 scratch_pool));
543 }
544
545 {
546 const svn_ra_reporter3_t *reporter;
547 void *report_baton;
548 const svn_delta_editor_t *switch_editor;
549 void *switch_baton;
550 svn_revnum_t revnum;
551 apr_array_header_t *inherited_props;
552 const char *target = svn_dirent_basename(local_abspath, scratch_pool);
553
554 /* Get the external file's iprops. */
555 SVN_ERR(svn_ra_get_inherited_props(ra_session, &inherited_props, "",
556 switch_loc->rev,
557 scratch_pool, scratch_pool));
558
559 SVN_ERR(svn_ra_reparent(ra_session,
560 svn_uri_dirname(switch_loc->url, scratch_pool),
561 scratch_pool));
562
563 SVN_ERR(svn_wc__get_file_external_editor(&switch_editor, &switch_baton,
564 &revnum, ctx->wc_ctx,
565 local_abspath,
566 def_dir_abspath,
567 switch_loc->url,
568 switch_loc->repos_root_url,
569 switch_loc->repos_uuid,
570 inherited_props,
571 use_commit_times,
572 diff3_cmd, preserved_exts,
573 def_dir_abspath,
574 record_url,
575 record_peg_revision,
576 record_revision,
577 ctx->conflict_func2,
578 ctx->conflict_baton2,
579 ctx->cancel_func,
580 ctx->cancel_baton,
581 ctx->notify_func2,
582 ctx->notify_baton2,
583 scratch_pool, scratch_pool));
584
585 /* Tell RA to do an update of URL+TARGET to REVISION; if we pass an
586 invalid revnum, that means RA will use the latest revision. */
587 SVN_ERR(svn_ra_do_switch3(ra_session, &reporter, &report_baton,
588 switch_loc->rev,
589 target, svn_depth_unknown, switch_loc->url,
590 FALSE /* send_copyfrom */,
591 TRUE /* ignore_ancestry */,
592 switch_editor, switch_baton,
593 scratch_pool, scratch_pool));
594
595 SVN_ERR(svn_wc__crawl_file_external(ctx->wc_ctx, local_abspath,
596 reporter, report_baton,
597 TRUE, use_commit_times,
598 ctx->cancel_func, ctx->cancel_baton,
599 ctx->notify_func2, ctx->notify_baton2,
600 scratch_pool));
601
602 if (ctx->notify_func2)
603 {
604 svn_wc_notify_t *notify
605 = svn_wc_create_notify(local_abspath, svn_wc_notify_update_completed,
606 scratch_pool);
607 notify->kind = svn_node_none;
608 notify->content_state = notify->prop_state
609 = svn_wc_notify_state_inapplicable;
610 notify->lock_state = svn_wc_notify_lock_state_inapplicable;
611 notify->revision = revnum;
612 ctx->notify_func2(ctx->notify_baton2, notify, scratch_pool);
613 }
614 }
615
616 return SVN_NO_ERROR;
617 }
618
619 /* Wrappers around svn_wc__external_remove, obtaining and releasing a lock for
620 directory externals */
621 static svn_error_t *
remove_external2(svn_boolean_t * removed,svn_wc_context_t * wc_ctx,const char * wri_abspath,const char * local_abspath,svn_node_kind_t external_kind,svn_cancel_func_t cancel_func,void * cancel_baton,apr_pool_t * scratch_pool)622 remove_external2(svn_boolean_t *removed,
623 svn_wc_context_t *wc_ctx,
624 const char *wri_abspath,
625 const char *local_abspath,
626 svn_node_kind_t external_kind,
627 svn_cancel_func_t cancel_func,
628 void *cancel_baton,
629 apr_pool_t *scratch_pool)
630 {
631 SVN_ERR(svn_wc__external_remove(wc_ctx, wri_abspath,
632 local_abspath,
633 (external_kind == svn_node_none),
634 cancel_func, cancel_baton,
635 scratch_pool));
636
637 *removed = TRUE;
638 return SVN_NO_ERROR;
639 }
640
641
642 static svn_error_t *
remove_external(svn_boolean_t * removed,svn_wc_context_t * wc_ctx,const char * wri_abspath,const char * local_abspath,svn_node_kind_t external_kind,svn_cancel_func_t cancel_func,void * cancel_baton,apr_pool_t * scratch_pool)643 remove_external(svn_boolean_t *removed,
644 svn_wc_context_t *wc_ctx,
645 const char *wri_abspath,
646 const char *local_abspath,
647 svn_node_kind_t external_kind,
648 svn_cancel_func_t cancel_func,
649 void *cancel_baton,
650 apr_pool_t *scratch_pool)
651 {
652 *removed = FALSE;
653 switch (external_kind)
654 {
655 case svn_node_dir:
656 SVN_WC__CALL_WITH_WRITE_LOCK(
657 remove_external2(removed,
658 wc_ctx, wri_abspath,
659 local_abspath, external_kind,
660 cancel_func, cancel_baton,
661 scratch_pool),
662 wc_ctx, local_abspath, FALSE, scratch_pool);
663 break;
664 case svn_node_file:
665 default:
666 SVN_ERR(remove_external2(removed,
667 wc_ctx, wri_abspath,
668 local_abspath, external_kind,
669 cancel_func, cancel_baton,
670 scratch_pool));
671 break;
672 }
673
674 return SVN_NO_ERROR;
675 }
676
677 /* Called when an external that is in the EXTERNALS table is no longer
678 referenced from an svn:externals property */
679 static svn_error_t *
handle_external_item_removal(const svn_client_ctx_t * ctx,const char * defining_abspath,const char * local_abspath,apr_pool_t * scratch_pool)680 handle_external_item_removal(const svn_client_ctx_t *ctx,
681 const char *defining_abspath,
682 const char *local_abspath,
683 apr_pool_t *scratch_pool)
684 {
685 svn_error_t *err;
686 svn_node_kind_t external_kind;
687 svn_node_kind_t kind;
688 svn_boolean_t removed = FALSE;
689
690 /* local_abspath should be a wcroot or a file external */
691 SVN_ERR(svn_wc__read_external_info(&external_kind, NULL, NULL, NULL, NULL,
692 ctx->wc_ctx, defining_abspath,
693 local_abspath, FALSE,
694 scratch_pool, scratch_pool));
695
696 SVN_ERR(svn_wc_read_kind2(&kind, ctx->wc_ctx, local_abspath, TRUE, FALSE,
697 scratch_pool));
698
699 if (external_kind != kind)
700 external_kind = svn_node_none; /* Only remove the registration */
701
702 err = remove_external(&removed,
703 ctx->wc_ctx, defining_abspath, local_abspath,
704 external_kind,
705 ctx->cancel_func, ctx->cancel_baton,
706 scratch_pool);
707
708 if (err && err->apr_err == SVN_ERR_WC_NOT_LOCKED && removed)
709 {
710 svn_error_clear(err);
711 err = NULL; /* We removed the working copy, so we can't release the
712 lock that was stored inside */
713 }
714
715 if (ctx->notify_func2)
716 {
717 svn_wc_notify_t *notify =
718 svn_wc_create_notify(local_abspath,
719 svn_wc_notify_update_external_removed,
720 scratch_pool);
721
722 notify->kind = kind;
723 notify->err = err;
724
725 ctx->notify_func2(ctx->notify_baton2, notify, scratch_pool);
726
727 if (err && err->apr_err == SVN_ERR_WC_LEFT_LOCAL_MOD)
728 {
729 notify = svn_wc_create_notify(local_abspath,
730 svn_wc_notify_left_local_modifications,
731 scratch_pool);
732 notify->kind = svn_node_dir;
733 notify->err = err;
734
735 ctx->notify_func2(ctx->notify_baton2, notify, scratch_pool);
736 }
737 }
738
739 if (err && err->apr_err == SVN_ERR_WC_LEFT_LOCAL_MOD)
740 {
741 svn_error_clear(err);
742 err = NULL;
743 }
744
745 return svn_error_trace(err);
746 }
747
748 static svn_error_t *
handle_external_item_change(svn_client_ctx_t * ctx,const char * repos_root_url,const char * parent_dir_abspath,const char * parent_dir_url,const char * local_abspath,const char * old_defining_abspath,const svn_wc_external_item2_t * new_item,svn_ra_session_t * ra_session,svn_boolean_t * timestamp_sleep,apr_pool_t * scratch_pool)749 handle_external_item_change(svn_client_ctx_t *ctx,
750 const char *repos_root_url,
751 const char *parent_dir_abspath,
752 const char *parent_dir_url,
753 const char *local_abspath,
754 const char *old_defining_abspath,
755 const svn_wc_external_item2_t *new_item,
756 svn_ra_session_t *ra_session,
757 svn_boolean_t *timestamp_sleep,
758 apr_pool_t *scratch_pool)
759 {
760 svn_client__pathrev_t *new_loc;
761 const char *new_url;
762 svn_node_kind_t ext_kind;
763
764 SVN_ERR_ASSERT(repos_root_url && parent_dir_url);
765 SVN_ERR_ASSERT(new_item != NULL);
766
767 /* Don't bother to check status, since we'll get that for free by
768 attempting to retrieve the hash values anyway. */
769
770 /* When creating the absolute URL, use the pool and not the
771 iterpool, since the hash table values outlive the iterpool and
772 any pointers they have should also outlive the iterpool. */
773
774 SVN_ERR(svn_wc__resolve_relative_external_url(&new_url,
775 new_item, repos_root_url,
776 parent_dir_url,
777 scratch_pool, scratch_pool));
778
779 /* Determine if the external is a file or directory. */
780 /* Get the RA connection, if needed. */
781 if (ra_session)
782 {
783 svn_error_t *err = svn_ra_reparent(ra_session, new_url, scratch_pool);
784
785 if (err)
786 {
787 if (err->apr_err == SVN_ERR_RA_ILLEGAL_URL)
788 {
789 svn_error_clear(err);
790 ra_session = NULL;
791 }
792 else
793 return svn_error_trace(err);
794 }
795 else
796 {
797 SVN_ERR(svn_client__resolve_rev_and_url(&new_loc,
798 ra_session, new_url,
799 &(new_item->peg_revision),
800 &(new_item->revision), ctx,
801 scratch_pool));
802
803 SVN_ERR(svn_ra_reparent(ra_session, new_loc->url, scratch_pool));
804 }
805 }
806
807 if (!ra_session)
808 SVN_ERR(svn_client__ra_session_from_path2(&ra_session, &new_loc,
809 new_url, NULL,
810 &(new_item->peg_revision),
811 &(new_item->revision), ctx,
812 scratch_pool));
813
814 SVN_ERR(svn_ra_check_path(ra_session, "", new_loc->rev, &ext_kind,
815 scratch_pool));
816
817 if (svn_node_none == ext_kind)
818 return svn_error_createf(SVN_ERR_RA_ILLEGAL_URL, NULL,
819 _("URL '%s' at revision %ld doesn't exist"),
820 new_loc->url, new_loc->rev);
821
822 if (svn_node_dir != ext_kind && svn_node_file != ext_kind)
823 return svn_error_createf(SVN_ERR_RA_ILLEGAL_URL, NULL,
824 _("URL '%s' at revision %ld is not a file "
825 "or a directory"),
826 new_loc->url, new_loc->rev);
827
828
829 /* Not protecting against recursive externals. Detecting them in
830 the global case is hard, and it should be pretty obvious to a
831 user when it happens. Worst case: your disk fills up :-). */
832
833 /* First notify that we're about to handle an external. */
834 if (ctx->notify_func2)
835 {
836 ctx->notify_func2(
837 ctx->notify_baton2,
838 svn_wc_create_notify(local_abspath,
839 svn_wc_notify_update_external,
840 scratch_pool),
841 scratch_pool);
842 }
843
844 if (! old_defining_abspath)
845 {
846 /* The target dir might have multiple components. Guarantee the path
847 leading down to the last component. */
848 SVN_ERR(svn_io_make_dir_recursively(svn_dirent_dirname(local_abspath,
849 scratch_pool),
850 scratch_pool));
851 }
852
853 switch (ext_kind)
854 {
855 case svn_node_dir:
856 SVN_ERR(switch_dir_external(local_abspath, new_loc->url,
857 new_item->url,
858 &(new_item->peg_revision),
859 &(new_item->revision),
860 parent_dir_abspath,
861 timestamp_sleep, ra_session, ctx,
862 scratch_pool));
863 break;
864 case svn_node_file:
865 if (strcmp(repos_root_url, new_loc->repos_root_url))
866 {
867 const char *local_repos_root_url;
868 const char *local_repos_uuid;
869 const char *ext_repos_relpath;
870 svn_error_t *err;
871
872 /*
873 * The working copy library currently requires that all files
874 * in the working copy have the same repository root URL.
875 * The URL from the file external's definition differs from the
876 * one used by the working copy. As a workaround, replace the
877 * root URL portion of the file external's URL, after making
878 * sure both URLs point to the same repository. See issue #4087.
879 */
880
881 err = svn_wc__node_get_repos_info(NULL, NULL,
882 &local_repos_root_url,
883 &local_repos_uuid,
884 ctx->wc_ctx, parent_dir_abspath,
885 scratch_pool, scratch_pool);
886 if (err)
887 {
888 if (err->apr_err != SVN_ERR_WC_PATH_NOT_FOUND
889 && err->apr_err != SVN_ERR_WC_NOT_WORKING_COPY)
890 return svn_error_trace(err);
891
892 svn_error_clear(err);
893 local_repos_root_url = NULL;
894 local_repos_uuid = NULL;
895 }
896
897 ext_repos_relpath = svn_uri_skip_ancestor(new_loc->repos_root_url,
898 new_url, scratch_pool);
899 if (local_repos_uuid == NULL || local_repos_root_url == NULL ||
900 ext_repos_relpath == NULL ||
901 strcmp(local_repos_uuid, new_loc->repos_uuid) != 0)
902 return svn_error_createf(SVN_ERR_UNSUPPORTED_FEATURE, NULL,
903 _("Unsupported external: URL of file external '%s' "
904 "is not in repository '%s'"),
905 new_url, repos_root_url);
906
907 new_url = svn_path_url_add_component2(local_repos_root_url,
908 ext_repos_relpath,
909 scratch_pool);
910 SVN_ERR(svn_client__ra_session_from_path2(&ra_session, &new_loc,
911 new_url,
912 NULL,
913 &(new_item->peg_revision),
914 &(new_item->revision),
915 ctx, scratch_pool));
916 }
917
918 SVN_ERR(switch_file_external(local_abspath,
919 new_loc,
920 new_url,
921 &new_item->peg_revision,
922 &new_item->revision,
923 parent_dir_abspath,
924 ra_session,
925 ctx,
926 scratch_pool));
927 break;
928
929 default:
930 SVN_ERR_MALFUNCTION();
931 break;
932 }
933
934 return SVN_NO_ERROR;
935 }
936
937 static svn_error_t *
wrap_external_error(const svn_client_ctx_t * ctx,const char * target_abspath,svn_error_t * err,apr_pool_t * scratch_pool)938 wrap_external_error(const svn_client_ctx_t *ctx,
939 const char *target_abspath,
940 svn_error_t *err,
941 apr_pool_t *scratch_pool)
942 {
943 if (err && err->apr_err != SVN_ERR_CANCELLED)
944 {
945 if (ctx->notify_func2)
946 {
947 svn_wc_notify_t *notifier = svn_wc_create_notify(
948 target_abspath,
949 svn_wc_notify_failed_external,
950 scratch_pool);
951 notifier->err = err;
952 ctx->notify_func2(ctx->notify_baton2, notifier, scratch_pool);
953 }
954 svn_error_clear(err);
955 return SVN_NO_ERROR;
956 }
957
958 return err;
959 }
960
961 static svn_error_t *
handle_externals_change(svn_client_ctx_t * ctx,const char * repos_root_url,svn_boolean_t * timestamp_sleep,const char * local_abspath,const char * new_desc_text,apr_hash_t * old_externals,svn_depth_t ambient_depth,svn_depth_t requested_depth,svn_ra_session_t * ra_session,apr_pool_t * scratch_pool)962 handle_externals_change(svn_client_ctx_t *ctx,
963 const char *repos_root_url,
964 svn_boolean_t *timestamp_sleep,
965 const char *local_abspath,
966 const char *new_desc_text,
967 apr_hash_t *old_externals,
968 svn_depth_t ambient_depth,
969 svn_depth_t requested_depth,
970 svn_ra_session_t *ra_session,
971 apr_pool_t *scratch_pool)
972 {
973 apr_array_header_t *new_desc;
974 int i;
975 apr_pool_t *iterpool;
976 const char *url;
977
978 iterpool = svn_pool_create(scratch_pool);
979
980 SVN_ERR_ASSERT(svn_dirent_is_absolute(local_abspath));
981
982 /* Bag out if the depth here is too shallow for externals action. */
983 if ((requested_depth < svn_depth_infinity
984 && requested_depth != svn_depth_unknown)
985 || (ambient_depth < svn_depth_infinity
986 && requested_depth < svn_depth_infinity))
987 return SVN_NO_ERROR;
988
989 if (new_desc_text)
990 SVN_ERR(svn_wc_parse_externals_description3(&new_desc, local_abspath,
991 new_desc_text,
992 FALSE, scratch_pool));
993 else
994 new_desc = NULL;
995
996 SVN_ERR(svn_wc__node_get_url(&url, ctx->wc_ctx, local_abspath,
997 scratch_pool, iterpool));
998
999 SVN_ERR_ASSERT(url);
1000
1001 for (i = 0; new_desc && (i < new_desc->nelts); i++)
1002 {
1003 const char *old_defining_abspath;
1004 svn_wc_external_item2_t *new_item;
1005 const char *target_abspath;
1006 svn_boolean_t under_root;
1007
1008 new_item = APR_ARRAY_IDX(new_desc, i, svn_wc_external_item2_t *);
1009
1010 svn_pool_clear(iterpool);
1011
1012 if (ctx->cancel_func)
1013 SVN_ERR(ctx->cancel_func(ctx->cancel_baton));
1014
1015 SVN_ERR(svn_dirent_is_under_root(&under_root, &target_abspath,
1016 local_abspath, new_item->target_dir,
1017 iterpool));
1018
1019 if (! under_root)
1020 {
1021 return svn_error_createf(
1022 SVN_ERR_WC_OBSTRUCTED_UPDATE, NULL,
1023 _("Path '%s' is not in the working copy"),
1024 svn_dirent_local_style(
1025 svn_dirent_join(local_abspath, new_item->target_dir,
1026 iterpool),
1027 iterpool));
1028 }
1029
1030 old_defining_abspath = svn_hash_gets(old_externals, target_abspath);
1031
1032 SVN_ERR(wrap_external_error(
1033 ctx, target_abspath,
1034 handle_external_item_change(ctx,
1035 repos_root_url,
1036 local_abspath, url,
1037 target_abspath,
1038 old_defining_abspath,
1039 new_item, ra_session,
1040 timestamp_sleep,
1041 iterpool),
1042 iterpool));
1043
1044 /* And remove already processed items from the to-remove hash */
1045 if (old_defining_abspath)
1046 svn_hash_sets(old_externals, target_abspath, NULL);
1047 }
1048
1049 svn_pool_destroy(iterpool);
1050
1051 return SVN_NO_ERROR;
1052 }
1053
1054
1055 svn_error_t *
svn_client__handle_externals(apr_hash_t * externals_new,apr_hash_t * ambient_depths,const char * repos_root_url,const char * target_abspath,svn_depth_t requested_depth,svn_boolean_t * timestamp_sleep,svn_ra_session_t * ra_session,svn_client_ctx_t * ctx,apr_pool_t * scratch_pool)1056 svn_client__handle_externals(apr_hash_t *externals_new,
1057 apr_hash_t *ambient_depths,
1058 const char *repos_root_url,
1059 const char *target_abspath,
1060 svn_depth_t requested_depth,
1061 svn_boolean_t *timestamp_sleep,
1062 svn_ra_session_t *ra_session,
1063 svn_client_ctx_t *ctx,
1064 apr_pool_t *scratch_pool)
1065 {
1066 apr_hash_t *old_external_defs;
1067 apr_hash_index_t *hi;
1068 apr_pool_t *iterpool;
1069
1070 SVN_ERR_ASSERT(repos_root_url);
1071
1072 iterpool = svn_pool_create(scratch_pool);
1073
1074 SVN_ERR(svn_wc__externals_defined_below(&old_external_defs,
1075 ctx->wc_ctx, target_abspath,
1076 scratch_pool, iterpool));
1077
1078 for (hi = apr_hash_first(scratch_pool, externals_new);
1079 hi;
1080 hi = apr_hash_next(hi))
1081 {
1082 const char *local_abspath = apr_hash_this_key(hi);
1083 const char *desc_text = apr_hash_this_val(hi);
1084 svn_depth_t ambient_depth = svn_depth_infinity;
1085
1086 svn_pool_clear(iterpool);
1087
1088 if (ambient_depths)
1089 {
1090 const char *ambient_depth_w;
1091
1092 ambient_depth_w = apr_hash_get(ambient_depths, local_abspath,
1093 apr_hash_this_key_len(hi));
1094
1095 if (ambient_depth_w == NULL)
1096 {
1097 return svn_error_createf(
1098 SVN_ERR_WC_CORRUPT, NULL,
1099 _("Traversal of '%s' found no ambient depth"),
1100 svn_dirent_local_style(local_abspath, scratch_pool));
1101 }
1102 else
1103 {
1104 ambient_depth = svn_depth_from_word(ambient_depth_w);
1105 }
1106 }
1107
1108 SVN_ERR(handle_externals_change(ctx, repos_root_url, timestamp_sleep,
1109 local_abspath,
1110 desc_text, old_external_defs,
1111 ambient_depth, requested_depth,
1112 ra_session, iterpool));
1113 }
1114
1115 /* Remove the remaining externals */
1116 for (hi = apr_hash_first(scratch_pool, old_external_defs);
1117 hi;
1118 hi = apr_hash_next(hi))
1119 {
1120 const char *item_abspath = apr_hash_this_key(hi);
1121 const char *defining_abspath = apr_hash_this_val(hi);
1122 const char *parent_abspath;
1123
1124 svn_pool_clear(iterpool);
1125
1126 SVN_ERR(wrap_external_error(
1127 ctx, item_abspath,
1128 handle_external_item_removal(ctx, defining_abspath,
1129 item_abspath, iterpool),
1130 iterpool));
1131
1132 /* Are there any unversioned directories between the removed
1133 * external and the DEFINING_ABSPATH which we can remove? */
1134 parent_abspath = item_abspath;
1135 do {
1136 svn_node_kind_t kind;
1137
1138 parent_abspath = svn_dirent_dirname(parent_abspath, iterpool);
1139 SVN_ERR(svn_wc_read_kind2(&kind, ctx->wc_ctx, parent_abspath,
1140 FALSE /* show_deleted*/,
1141 FALSE /* show_hidden */,
1142 iterpool));
1143 if (kind == svn_node_none)
1144 {
1145 svn_error_t *err;
1146
1147 err = svn_io_dir_remove_nonrecursive(parent_abspath, iterpool);
1148 if (err)
1149 {
1150 if (APR_STATUS_IS_ENOTEMPTY(err->apr_err))
1151 {
1152 svn_error_clear(err);
1153 break; /* No parents to delete */
1154 }
1155 else if (APR_STATUS_IS_ENOENT(err->apr_err)
1156 || APR_STATUS_IS_ENOTDIR(err->apr_err))
1157 {
1158 svn_error_clear(err);
1159 /* Fall through; parent dir might be unversioned */
1160 }
1161 else
1162 return svn_error_trace(err);
1163 }
1164 }
1165 } while (strcmp(parent_abspath, defining_abspath) != 0);
1166 }
1167
1168
1169 svn_pool_destroy(iterpool);
1170 return SVN_NO_ERROR;
1171 }
1172
1173
1174 svn_error_t *
svn_client__export_externals(apr_hash_t * externals,const char * from_url,const char * to_abspath,const char * repos_root_url,svn_depth_t requested_depth,const char * native_eol,svn_boolean_t ignore_keywords,svn_client_ctx_t * ctx,apr_pool_t * scratch_pool)1175 svn_client__export_externals(apr_hash_t *externals,
1176 const char *from_url,
1177 const char *to_abspath,
1178 const char *repos_root_url,
1179 svn_depth_t requested_depth,
1180 const char *native_eol,
1181 svn_boolean_t ignore_keywords,
1182 svn_client_ctx_t *ctx,
1183 apr_pool_t *scratch_pool)
1184 {
1185 apr_pool_t *iterpool = svn_pool_create(scratch_pool);
1186 apr_pool_t *sub_iterpool = svn_pool_create(scratch_pool);
1187 apr_hash_index_t *hi;
1188
1189 SVN_ERR_ASSERT(svn_dirent_is_absolute(to_abspath));
1190
1191 for (hi = apr_hash_first(scratch_pool, externals);
1192 hi;
1193 hi = apr_hash_next(hi))
1194 {
1195 const char *local_abspath = apr_hash_this_key(hi);
1196 const char *desc_text = apr_hash_this_val(hi);
1197 const char *local_relpath;
1198 const char *dir_url;
1199 apr_array_header_t *items;
1200 int i;
1201
1202 svn_pool_clear(iterpool);
1203
1204 SVN_ERR(svn_wc_parse_externals_description3(&items, local_abspath,
1205 desc_text, FALSE,
1206 iterpool));
1207
1208 if (! items->nelts)
1209 continue;
1210
1211 local_relpath = svn_dirent_skip_ancestor(to_abspath, local_abspath);
1212
1213 dir_url = svn_path_url_add_component2(from_url, local_relpath,
1214 scratch_pool);
1215
1216 for (i = 0; i < items->nelts; i++)
1217 {
1218 const char *item_abspath;
1219 const char *new_url;
1220 svn_boolean_t under_root;
1221 svn_wc_external_item2_t *item = APR_ARRAY_IDX(items, i,
1222 svn_wc_external_item2_t *);
1223
1224 svn_pool_clear(sub_iterpool);
1225
1226 SVN_ERR(svn_dirent_is_under_root(&under_root, &item_abspath,
1227 local_abspath, item->target_dir,
1228 sub_iterpool));
1229
1230 if (! under_root)
1231 {
1232 return svn_error_createf(
1233 SVN_ERR_WC_OBSTRUCTED_UPDATE, NULL,
1234 _("Path '%s' is not in the working copy"),
1235 svn_dirent_local_style(
1236 svn_dirent_join(local_abspath, item->target_dir,
1237 sub_iterpool),
1238 sub_iterpool));
1239 }
1240
1241 SVN_ERR(svn_wc__resolve_relative_external_url(&new_url, item,
1242 repos_root_url,
1243 dir_url, sub_iterpool,
1244 sub_iterpool));
1245
1246 /* The target dir might have multiple components. Guarantee
1247 the path leading down to the last component. */
1248 SVN_ERR(svn_io_make_dir_recursively(svn_dirent_dirname(item_abspath,
1249 sub_iterpool),
1250 sub_iterpool));
1251
1252 /* First notify that we're about to handle an external. */
1253 if (ctx->notify_func2)
1254 {
1255 ctx->notify_func2(
1256 ctx->notify_baton2,
1257 svn_wc_create_notify(item_abspath,
1258 svn_wc_notify_update_external,
1259 sub_iterpool),
1260 sub_iterpool);
1261 }
1262
1263 SVN_ERR(wrap_external_error(
1264 ctx, item_abspath,
1265 svn_client_export5(NULL, new_url, item_abspath,
1266 &item->peg_revision,
1267 &item->revision,
1268 TRUE, FALSE, ignore_keywords,
1269 svn_depth_infinity,
1270 native_eol,
1271 ctx, sub_iterpool),
1272 sub_iterpool));
1273 }
1274 }
1275
1276 svn_pool_destroy(sub_iterpool);
1277 svn_pool_destroy(iterpool);
1278
1279 return SVN_NO_ERROR;
1280 }
1281
1282