Fix broken password quality check
[Samba.git] / source3 / modules / vfs_recycle.c
blob771189ca7364fa4787f263ca62ee6fe4e7bcebab
1 /*
2 * Recycle bin VFS module for Samba.
4 * Copyright (C) 2001, Brandon Stone, Amherst College, <bbstone@amherst.edu>.
5 * Copyright (C) 2002, Jeremy Allison - modified to make a VFS module.
6 * Copyright (C) 2002, Alexander Bokovoy - cascaded VFS adoption,
7 * Copyright (C) 2002, Juergen Hasch - added some options.
8 * Copyright (C) 2002, Simo Sorce
9 * Copyright (C) 2002, Stefan (metze) Metzmacher
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, see <http://www.gnu.org/licenses/>.
25 #include "includes.h"
27 #define ALLOC_CHECK(ptr, label) do { if ((ptr) == NULL) { DEBUG(0, ("recycle.bin: out of memory!\n")); errno = ENOMEM; goto label; } } while(0)
29 static int vfs_recycle_debug_level = DBGC_VFS;
31 #undef DBGC_CLASS
32 #define DBGC_CLASS vfs_recycle_debug_level
34 static int recycle_connect(vfs_handle_struct *handle, const char *service, const char *user);
35 static void recycle_disconnect(vfs_handle_struct *handle);
36 static int recycle_unlink(vfs_handle_struct *handle,
37 const struct smb_filename *smb_fname);
39 static vfs_op_tuple recycle_ops[] = {
41 /* Disk operations */
42 {SMB_VFS_OP(recycle_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_TRANSPARENT},
43 {SMB_VFS_OP(recycle_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_TRANSPARENT},
45 /* File operations */
46 {SMB_VFS_OP(recycle_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_TRANSPARENT},
48 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
51 static int recycle_connect(vfs_handle_struct *handle, const char *service, const char *user)
53 DEBUG(10,("recycle_connect() connect to service[%s] as user[%s].\n",
54 service,user));
56 return SMB_VFS_NEXT_CONNECT(handle, service, user);
59 static void recycle_disconnect(vfs_handle_struct *handle)
61 DEBUG(10,("recycle_disconnect() connect to service[%s].\n",
62 lp_servicename(SNUM(handle->conn))));
64 SMB_VFS_NEXT_DISCONNECT(handle);
67 static const char *recycle_repository(vfs_handle_struct *handle)
69 const char *tmp_str = NULL;
72 tmp_str = lp_parm_const_string(SNUM(handle->conn), "recycle", "repository",".recycle");
74 DEBUG(10, ("recycle: repository = %s\n", tmp_str));
76 return tmp_str;
79 static bool recycle_keep_dir_tree(vfs_handle_struct *handle)
81 bool ret;
83 ret = lp_parm_bool(SNUM(handle->conn), "recycle", "keeptree", False);
85 DEBUG(10, ("recycle_bin: keeptree = %s\n", ret?"True":"False"));
87 return ret;
90 static bool recycle_versions(vfs_handle_struct *handle)
92 bool ret;
94 ret = lp_parm_bool(SNUM(handle->conn), "recycle", "versions", False);
96 DEBUG(10, ("recycle: versions = %s\n", ret?"True":"False"));
98 return ret;
101 static bool recycle_touch(vfs_handle_struct *handle)
103 bool ret;
105 ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch", False);
107 DEBUG(10, ("recycle: touch = %s\n", ret?"True":"False"));
109 return ret;
112 static bool recycle_touch_mtime(vfs_handle_struct *handle)
114 bool ret;
116 ret = lp_parm_bool(SNUM(handle->conn), "recycle", "touch_mtime", False);
118 DEBUG(10, ("recycle: touch_mtime = %s\n", ret?"True":"False"));
120 return ret;
123 static const char **recycle_exclude(vfs_handle_struct *handle)
125 const char **tmp_lp;
127 tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude", NULL);
129 DEBUG(10, ("recycle: exclude = %s ...\n", tmp_lp?*tmp_lp:""));
131 return tmp_lp;
134 static const char **recycle_exclude_dir(vfs_handle_struct *handle)
136 const char **tmp_lp;
138 tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "exclude_dir", NULL);
140 DEBUG(10, ("recycle: exclude_dir = %s ...\n", tmp_lp?*tmp_lp:""));
142 return tmp_lp;
145 static const char **recycle_noversions(vfs_handle_struct *handle)
147 const char **tmp_lp;
149 tmp_lp = lp_parm_string_list(SNUM(handle->conn), "recycle", "noversions", NULL);
151 DEBUG(10, ("recycle: noversions = %s\n", tmp_lp?*tmp_lp:""));
153 return tmp_lp;
156 static SMB_OFF_T recycle_maxsize(vfs_handle_struct *handle)
158 SMB_OFF_T maxsize;
160 maxsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
161 "recycle", "maxsize", NULL));
163 DEBUG(10, ("recycle: maxsize = %lu\n", (long unsigned int)maxsize));
165 return maxsize;
168 static SMB_OFF_T recycle_minsize(vfs_handle_struct *handle)
170 SMB_OFF_T minsize;
172 minsize = conv_str_size(lp_parm_const_string(SNUM(handle->conn),
173 "recycle", "minsize", NULL));
175 DEBUG(10, ("recycle: minsize = %lu\n", (long unsigned int)minsize));
177 return minsize;
180 static mode_t recycle_directory_mode(vfs_handle_struct *handle)
182 int dirmode;
183 const char *buff;
185 buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "directory_mode", NULL);
187 if (buff != NULL ) {
188 sscanf(buff, "%o", &dirmode);
189 } else {
190 dirmode=S_IRUSR | S_IWUSR | S_IXUSR;
193 DEBUG(10, ("recycle: directory_mode = %o\n", dirmode));
194 return (mode_t)dirmode;
197 static mode_t recycle_subdir_mode(vfs_handle_struct *handle)
199 int dirmode;
200 const char *buff;
202 buff = lp_parm_const_string(SNUM(handle->conn), "recycle", "subdir_mode", NULL);
204 if (buff != NULL ) {
205 sscanf(buff, "%o", &dirmode);
206 } else {
207 dirmode=recycle_directory_mode(handle);
210 DEBUG(10, ("recycle: subdir_mode = %o\n", dirmode));
211 return (mode_t)dirmode;
214 static bool recycle_directory_exist(vfs_handle_struct *handle, const char *dname)
216 SMB_STRUCT_STAT st;
218 if (vfs_stat_smb_fname(handle->conn, dname, &st) == 0) {
219 if (S_ISDIR(st.st_ex_mode)) {
220 return True;
224 return False;
227 static bool recycle_file_exist(vfs_handle_struct *handle,
228 const struct smb_filename *smb_fname)
230 struct smb_filename *smb_fname_tmp = NULL;
231 NTSTATUS status;
232 bool ret = false;
234 status = copy_smb_filename(talloc_tos(), smb_fname, &smb_fname_tmp);
235 if (!NT_STATUS_IS_OK(status)) {
236 return false;
239 if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) == 0) {
240 if (S_ISREG(smb_fname_tmp->st.st_ex_mode)) {
241 ret = true;
245 TALLOC_FREE(smb_fname_tmp);
246 return ret;
250 * Return file size
251 * @param conn connection
252 * @param fname file name
253 * @return size in bytes
255 static SMB_OFF_T recycle_get_file_size(vfs_handle_struct *handle,
256 const struct smb_filename *smb_fname)
258 struct smb_filename *smb_fname_tmp = NULL;
259 NTSTATUS status;
260 SMB_OFF_T size;
262 status = copy_smb_filename(talloc_tos(), smb_fname, &smb_fname_tmp);
263 if (!NT_STATUS_IS_OK(status)) {
264 size = (SMB_OFF_T)0;
265 goto out;
268 if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
269 DEBUG(0,("recycle: stat for %s returned %s\n",
270 smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
271 size = (SMB_OFF_T)0;
272 goto out;
275 size = smb_fname_tmp->st.st_ex_size;
276 out:
277 TALLOC_FREE(smb_fname_tmp);
278 return size;
282 * Create directory tree
283 * @param conn connection
284 * @param dname Directory tree to be created
285 * @return Returns True for success
287 static bool recycle_create_dir(vfs_handle_struct *handle, const char *dname)
289 size_t len;
290 mode_t mode;
291 char *new_dir = NULL;
292 char *tmp_str = NULL;
293 char *token;
294 char *tok_str;
295 bool ret = False;
296 char *saveptr;
298 mode = recycle_directory_mode(handle);
300 tmp_str = SMB_STRDUP(dname);
301 ALLOC_CHECK(tmp_str, done);
302 tok_str = tmp_str;
304 len = strlen(dname)+1;
305 new_dir = (char *)SMB_MALLOC(len + 1);
306 ALLOC_CHECK(new_dir, done);
307 *new_dir = '\0';
308 if (dname[0] == '/') {
309 /* Absolute path. */
310 safe_strcat(new_dir,"/",len);
313 /* Create directory tree if neccessary */
314 for(token = strtok_r(tok_str, "/", &saveptr); token;
315 token = strtok_r(NULL, "/", &saveptr)) {
316 safe_strcat(new_dir, token, len);
317 if (recycle_directory_exist(handle, new_dir))
318 DEBUG(10, ("recycle: dir %s already exists\n", new_dir));
319 else {
320 DEBUG(5, ("recycle: creating new dir %s\n", new_dir));
321 if (SMB_VFS_NEXT_MKDIR(handle, new_dir, mode) != 0) {
322 DEBUG(1,("recycle: mkdir failed for %s with error: %s\n", new_dir, strerror(errno)));
323 ret = False;
324 goto done;
327 safe_strcat(new_dir, "/", len);
328 mode = recycle_subdir_mode(handle);
331 ret = True;
332 done:
333 SAFE_FREE(tmp_str);
334 SAFE_FREE(new_dir);
335 return ret;
339 * Check if any of the components of "exclude_list" are contained in path.
340 * Return True if found
343 static bool matchdirparam(const char **dir_exclude_list, char *path)
345 char *startp = NULL, *endp = NULL;
347 if (dir_exclude_list == NULL || dir_exclude_list[0] == NULL ||
348 *dir_exclude_list[0] == '\0' || path == NULL || *path == '\0') {
349 return False;
353 * Walk the components of path, looking for matches with the
354 * exclude list on each component.
357 for (startp = path; startp; startp = endp) {
358 int i;
360 while (*startp == '/') {
361 startp++;
363 endp = strchr(startp, '/');
364 if (endp) {
365 *endp = '\0';
368 for(i=0; dir_exclude_list[i] ; i++) {
369 if(unix_wild_match(dir_exclude_list[i], startp)) {
370 /* Repair path. */
371 if (endp) {
372 *endp = '/';
374 return True;
378 /* Repair path. */
379 if (endp) {
380 *endp = '/';
384 return False;
388 * Check if needle is contained in haystack, * and ? patterns are resolved
389 * @param haystack list of parameters separated by delimimiter character
390 * @param needle string to be matched exectly to haystack including pattern matching
391 * @return True if found
393 static bool matchparam(const char **haystack_list, const char *needle)
395 int i;
397 if (haystack_list == NULL || haystack_list[0] == NULL ||
398 *haystack_list[0] == '\0' || needle == NULL || *needle == '\0') {
399 return False;
402 for(i=0; haystack_list[i] ; i++) {
403 if(unix_wild_match(haystack_list[i], needle)) {
404 return True;
408 return False;
412 * Touch access or modify date
414 static void recycle_do_touch(vfs_handle_struct *handle,
415 const struct smb_filename *smb_fname,
416 bool touch_mtime)
418 struct smb_filename *smb_fname_tmp = NULL;
419 struct smb_file_time ft;
420 NTSTATUS status;
421 int ret, err;
423 ZERO_STRUCT(ft);
425 status = copy_smb_filename(talloc_tos(), smb_fname, &smb_fname_tmp);
426 if (!NT_STATUS_IS_OK(status)) {
427 return;
430 if (SMB_VFS_STAT(handle->conn, smb_fname_tmp) != 0) {
431 DEBUG(0,("recycle: stat for %s returned %s\n",
432 smb_fname_str_dbg(smb_fname_tmp), strerror(errno)));
433 goto out;
435 /* atime */
436 ft.atime = timespec_current();
437 /* mtime */
438 ft.mtime = touch_mtime ? ft.atime : smb_fname_tmp->st.st_ex_mtime;
440 become_root();
441 ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname_tmp, &ft);
442 err = errno;
443 unbecome_root();
444 if (ret == -1 ) {
445 DEBUG(0, ("recycle: touching %s failed, reason = %s\n",
446 smb_fname_str_dbg(smb_fname_tmp), strerror(err)));
448 out:
449 TALLOC_FREE(smb_fname_tmp);
453 * Check if file should be recycled
455 static int recycle_unlink(vfs_handle_struct *handle,
456 const struct smb_filename *smb_fname)
458 connection_struct *conn = handle->conn;
459 char *path_name = NULL;
460 char *temp_name = NULL;
461 char *final_name = NULL;
462 struct smb_filename *smb_fname_final = NULL;
463 const char *base;
464 char *repository = NULL;
465 int i = 1;
466 SMB_OFF_T maxsize, minsize;
467 SMB_OFF_T file_size; /* space_avail; */
468 bool exist;
469 NTSTATUS status;
470 int rc = -1;
472 repository = talloc_sub_advanced(NULL, lp_servicename(SNUM(conn)),
473 conn->server_info->unix_name,
474 conn->connectpath,
475 conn->server_info->utok.gid,
476 conn->server_info->sanitized_username,
477 pdb_get_domain(conn->server_info->sam_account),
478 recycle_repository(handle));
479 ALLOC_CHECK(repository, done);
480 /* shouldn't we allow absolute path names here? --metze */
481 /* Yes :-). JRA. */
482 trim_char(repository, '\0', '/');
484 if(!repository || *(repository) == '\0') {
485 DEBUG(3, ("recycle: repository path not set, purging %s...\n",
486 smb_fname_str_dbg(smb_fname)));
487 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
488 goto done;
491 /* we don't recycle the recycle bin... */
492 if (strncmp(smb_fname->base_name, repository,
493 strlen(repository)) == 0) {
494 DEBUG(3, ("recycle: File is within recycling bin, unlinking ...\n"));
495 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
496 goto done;
499 file_size = recycle_get_file_size(handle, smb_fname);
500 /* it is wrong to purge filenames only because they are empty imho
501 * --- simo
503 if(fsize == 0) {
504 DEBUG(3, ("recycle: File %s is empty, purging...\n", file_name));
505 rc = SMB_VFS_NEXT_UNLINK(handle,file_name);
506 goto done;
510 /* FIXME: this is wrong, we should check the whole size of the recycle bin is
511 * not greater then maxsize, not the size of the single file, also it is better
512 * to remove older files
514 maxsize = recycle_maxsize(handle);
515 if(maxsize > 0 && file_size > maxsize) {
516 DEBUG(3, ("recycle: File %s exceeds maximum recycle size, "
517 "purging... \n", smb_fname_str_dbg(smb_fname)));
518 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
519 goto done;
521 minsize = recycle_minsize(handle);
522 if(minsize > 0 && file_size < minsize) {
523 DEBUG(3, ("recycle: File %s lowers minimum recycle size, "
524 "purging... \n", smb_fname_str_dbg(smb_fname)));
525 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
526 goto done;
529 /* FIXME: this is wrong: moving files with rename does not change the disk space
530 * allocation
532 space_avail = SMB_VFS_NEXT_DISK_FREE(handle, ".", True, &bsize, &dfree, &dsize) * 1024L;
533 DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size));
534 if(space_avail < file_size) {
535 DEBUG(3, ("recycle: Not enough diskspace, purging file %s\n", file_name));
536 rc = SMB_VFS_NEXT_UNLINK(handle, file_name);
537 goto done;
541 /* extract filename and path */
542 base = strrchr(smb_fname->base_name, '/');
543 if (base == NULL) {
544 base = smb_fname->base_name;
545 path_name = SMB_STRDUP("/");
546 ALLOC_CHECK(path_name, done);
548 else {
549 path_name = SMB_STRDUP(smb_fname->base_name);
550 ALLOC_CHECK(path_name, done);
551 path_name[base - smb_fname->base_name] = '\0';
552 base++;
555 /* original filename with path */
556 DEBUG(10, ("recycle: fname = %s\n", smb_fname_str_dbg(smb_fname)));
557 /* original path */
558 DEBUG(10, ("recycle: fpath = %s\n", path_name));
559 /* filename without path */
560 DEBUG(10, ("recycle: base = %s\n", base));
562 if (matchparam(recycle_exclude(handle), base)) {
563 DEBUG(3, ("recycle: file %s is excluded \n", base));
564 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
565 goto done;
568 if (matchdirparam(recycle_exclude_dir(handle), path_name)) {
569 DEBUG(3, ("recycle: directory %s is excluded \n", path_name));
570 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
571 goto done;
574 if (recycle_keep_dir_tree(handle) == True) {
575 if (asprintf(&temp_name, "%s/%s", repository, path_name) == -1) {
576 ALLOC_CHECK(temp_name, done);
578 } else {
579 temp_name = SMB_STRDUP(repository);
581 ALLOC_CHECK(temp_name, done);
583 exist = recycle_directory_exist(handle, temp_name);
584 if (exist) {
585 DEBUG(10, ("recycle: Directory already exists\n"));
586 } else {
587 DEBUG(10, ("recycle: Creating directory %s\n", temp_name));
588 if (recycle_create_dir(handle, temp_name) == False) {
589 DEBUG(3, ("recycle: Could not create directory, "
590 "purging %s...\n",
591 smb_fname_str_dbg(smb_fname)));
592 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
593 goto done;
597 if (asprintf(&final_name, "%s/%s", temp_name, base) == -1) {
598 ALLOC_CHECK(final_name, done);
601 /* Create smb_fname with final base name and orig stream name. */
602 status = create_synthetic_smb_fname(talloc_tos(), final_name,
603 smb_fname->stream_name, NULL,
604 &smb_fname_final);
605 if (!NT_STATUS_IS_OK(status)) {
606 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
607 goto done;
610 /* new filename with path */
611 DEBUG(10, ("recycle: recycled file name: %s\n",
612 smb_fname_str_dbg(smb_fname_final)));
614 /* check if we should delete file from recycle bin */
615 if (recycle_file_exist(handle, smb_fname_final)) {
616 if (recycle_versions(handle) == False || matchparam(recycle_noversions(handle), base) == True) {
617 DEBUG(3, ("recycle: Removing old file %s from recycle "
618 "bin\n", smb_fname_str_dbg(smb_fname_final)));
619 if (SMB_VFS_NEXT_UNLINK(handle,
620 smb_fname_final) != 0) {
621 DEBUG(1, ("recycle: Error deleting old file: %s\n", strerror(errno)));
626 /* rename file we move to recycle bin */
627 i = 1;
628 while (recycle_file_exist(handle, smb_fname_final)) {
629 SAFE_FREE(final_name);
630 if (asprintf(&final_name, "%s/Copy #%d of %s", temp_name, i++, base) == -1) {
631 ALLOC_CHECK(final_name, done);
633 TALLOC_FREE(smb_fname_final->base_name);
634 smb_fname_final->base_name = talloc_strdup(smb_fname_final,
635 final_name);
636 if (smb_fname_final->base_name == NULL) {
637 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
638 goto done;
642 DEBUG(10, ("recycle: Moving %s to %s\n", smb_fname_str_dbg(smb_fname),
643 smb_fname_str_dbg(smb_fname_final)));
644 rc = SMB_VFS_NEXT_RENAME(handle, smb_fname, smb_fname_final);
645 if (rc != 0) {
646 DEBUG(3, ("recycle: Move error %d (%s), purging file %s "
647 "(%s)\n", errno, strerror(errno),
648 smb_fname_str_dbg(smb_fname),
649 smb_fname_str_dbg(smb_fname_final)));
650 rc = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
651 goto done;
654 /* touch access date of moved file */
655 if (recycle_touch(handle) == True || recycle_touch_mtime(handle))
656 recycle_do_touch(handle, smb_fname_final,
657 recycle_touch_mtime(handle));
659 done:
660 SAFE_FREE(path_name);
661 SAFE_FREE(temp_name);
662 SAFE_FREE(final_name);
663 TALLOC_FREE(smb_fname_final);
664 TALLOC_FREE(repository);
665 return rc;
668 NTSTATUS vfs_recycle_init(void);
669 NTSTATUS vfs_recycle_init(void)
671 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "recycle", recycle_ops);
673 if (!NT_STATUS_IS_OK(ret))
674 return ret;
676 vfs_recycle_debug_level = debug_add_class("recycle");
677 if (vfs_recycle_debug_level == -1) {
678 vfs_recycle_debug_level = DBGC_VFS;
679 DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n"));
680 } else {
681 DEBUG(10, ("vfs_recycle: Debug class number of 'recycle': %d\n", vfs_recycle_debug_level));
684 return ret;