source: vendor/3.5.0/source3/modules/vfs_netatalk.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 10.6 KB
Line 
1/*
2 * AppleTalk VFS module for Samba-3.x
3 *
4 * Copyright (C) Alexei Kotovich, 2002
5 * Copyright (C) Stefan (metze) Metzmacher, 2003
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include "includes.h"
22
23#undef DBGC_CLASS
24#define DBGC_CLASS DBGC_VFS
25
26#define APPLEDOUBLE ".AppleDouble"
27#define ADOUBLEMODE 0777
28
29/* atalk functions */
30
31static int atalk_build_paths(TALLOC_CTX *ctx, const char *path,
32 const char *fname,
33 char **adbl_path, char **orig_path,
34 SMB_STRUCT_STAT *adbl_info,
35 SMB_STRUCT_STAT *orig_info,
36 bool fake_dir_create_times);
37
38static int atalk_unlink_file(const char *path);
39
40static int atalk_get_path_ptr(char *path)
41{
42 int i = 0;
43 int ptr = 0;
44
45 for (i = 0; path[i]; i ++) {
46 if (path[i] == '/')
47 ptr = i;
48 /* get out some 'spam';) from win32's file name */
49 else if (path[i] == ':') {
50 path[i] = '\0';
51 break;
52 }
53 }
54
55 return ptr;
56}
57
58static int atalk_build_paths(TALLOC_CTX *ctx, const char *path,
59 const char *fname,
60 char **adbl_path, char **orig_path,
61 SMB_STRUCT_STAT *adbl_info,
62 SMB_STRUCT_STAT *orig_info,
63 bool fake_dir_create_times)
64{
65 int ptr0 = 0;
66 int ptr1 = 0;
67 char *dname = 0;
68 char *name = 0;
69
70 if (!ctx || !path || !fname || !adbl_path || !orig_path ||
71 !adbl_info || !orig_info)
72 return -1;
73#if 0
74 DEBUG(3, ("ATALK: PATH: %s[%s]\n", path, fname));
75#endif
76 if (strstr(path, APPLEDOUBLE) || strstr(fname, APPLEDOUBLE)) {
77 DEBUG(3, ("ATALK: path %s[%s] already contains %s\n", path, fname, APPLEDOUBLE));
78 return -1;
79 }
80
81 if (fname[0] == '.') ptr0 ++;
82 if (fname[1] == '/') ptr0 ++;
83
84 *orig_path = talloc_asprintf(ctx, "%s/%s", path, &fname[ptr0]);
85
86 /* get pointer to last '/' */
87 ptr1 = atalk_get_path_ptr(*orig_path);
88
89 sys_lstat(*orig_path, orig_info, fake_dir_create_times);
90
91 if (S_ISDIR(orig_info->st_ex_mode)) {
92 *adbl_path = talloc_asprintf(ctx, "%s/%s/%s/",
93 path, &fname[ptr0], APPLEDOUBLE);
94 } else {
95 dname = talloc_strdup(ctx, *orig_path);
96 dname[ptr1] = '\0';
97 name = *orig_path;
98 *adbl_path = talloc_asprintf(ctx, "%s/%s/%s",
99 dname, APPLEDOUBLE, &name[ptr1 + 1]);
100 }
101#if 0
102 DEBUG(3, ("ATALK: DEBUG:\n%s\n%s\n", *orig_path, *adbl_path));
103#endif
104 sys_lstat(*adbl_path, adbl_info, fake_dir_create_times);
105 return 0;
106}
107
108static int atalk_unlink_file(const char *path)
109{
110 int ret = 0;
111
112 become_root();
113 ret = unlink(path);
114 unbecome_root();
115
116 return ret;
117}
118
119static void atalk_add_to_list(name_compare_entry **list)
120{
121 int i, count = 0;
122 name_compare_entry *new_list = 0;
123 name_compare_entry *cur_list = 0;
124
125 cur_list = *list;
126
127 if (cur_list) {
128 for (i = 0, count = 0; cur_list[i].name; i ++, count ++) {
129 if (strstr(cur_list[i].name, APPLEDOUBLE))
130 return;
131 }
132 }
133
134 if (!(new_list = SMB_CALLOC_ARRAY(name_compare_entry, (count == 0 ? 1 : count + 1))))
135 return;
136
137 for (i = 0; i < count; i ++) {
138 new_list[i].name = SMB_STRDUP(cur_list[i].name);
139 new_list[i].is_wild = cur_list[i].is_wild;
140 }
141
142 new_list[i].name = SMB_STRDUP(APPLEDOUBLE);
143 new_list[i].is_wild = False;
144
145 free_namearray(*list);
146
147 *list = new_list;
148 new_list = 0;
149 cur_list = 0;
150}
151
152static void atalk_rrmdir(TALLOC_CTX *ctx, char *path)
153{
154 char *dpath;
155 SMB_STRUCT_DIRENT *dent = 0;
156 SMB_STRUCT_DIR *dir;
157
158 if (!path) return;
159
160 dir = sys_opendir(path);
161 if (!dir) return;
162
163 while (NULL != (dent = sys_readdir(dir))) {
164 if (strcmp(dent->d_name, ".") == 0 ||
165 strcmp(dent->d_name, "..") == 0)
166 continue;
167 if (!(dpath = talloc_asprintf(ctx, "%s/%s",
168 path, dent->d_name)))
169 continue;
170 atalk_unlink_file(dpath);
171 }
172
173 sys_closedir(dir);
174}
175
176/* Disk operations */
177
178/* Directory operations */
179
180static SMB_STRUCT_DIR *atalk_opendir(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
181{
182 SMB_STRUCT_DIR *ret = 0;
183
184 ret = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
185
186 /*
187 * when we try to perform delete operation upon file which has fork
188 * in ./.AppleDouble and this directory wasn't hidden by Samba,
189 * MS Windows explorer causes the error: "Cannot find the specified file"
190 * There is some workaround to avoid this situation, i.e. if
191 * connection has not .AppleDouble entry in either veto or hide
192 * list then it would be nice to add one.
193 */
194
195 atalk_add_to_list(&handle->conn->hide_list);
196 atalk_add_to_list(&handle->conn->veto_list);
197
198 return ret;
199}
200
201static int atalk_rmdir(struct vfs_handle_struct *handle, const char *path)
202{
203 bool add = False;
204 TALLOC_CTX *ctx = 0;
205 char *dpath;
206
207 if (!handle->conn->origpath || !path) goto exit_rmdir;
208
209 /* due to there is no way to change bDeleteVetoFiles variable
210 * from this module, gotta use talloc stuff..
211 */
212
213 strstr(path, APPLEDOUBLE) ? (add = False) : (add = True);
214
215 if (!(ctx = talloc_init("remove_directory")))
216 goto exit_rmdir;
217
218 if (!(dpath = talloc_asprintf(ctx, "%s/%s%s",
219 handle->conn->origpath, path, add ? "/"APPLEDOUBLE : "")))
220 goto exit_rmdir;
221
222 atalk_rrmdir(ctx, dpath);
223
224exit_rmdir:
225 talloc_destroy(ctx);
226 return SMB_VFS_NEXT_RMDIR(handle, path);
227}
228
229/* File operations */
230
231static int atalk_rename(struct vfs_handle_struct *handle,
232 const struct smb_filename *smb_fname_src,
233 const struct smb_filename *smb_fname_dst)
234{
235 int ret = 0;
236 char *oldname = NULL;
237 char *adbl_path = NULL;
238 char *orig_path = NULL;
239 SMB_STRUCT_STAT adbl_info;
240 SMB_STRUCT_STAT orig_info;
241 NTSTATUS status;
242
243 ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
244
245 status = get_full_smb_filename(talloc_tos(), smb_fname_src, &oldname);
246 if (!NT_STATUS_IS_OK(status)) {
247 return ret;
248 }
249
250 if (atalk_build_paths(talloc_tos(), handle->conn->origpath, oldname,
251 &adbl_path, &orig_path, &adbl_info,
252 &orig_info, false) != 0)
253 goto exit_rename;
254
255 if (S_ISDIR(orig_info.st_ex_mode) || S_ISREG(orig_info.st_ex_mode)) {
256 DEBUG(3, ("ATALK: %s has passed..\n", adbl_path));
257 goto exit_rename;
258 }
259
260 atalk_unlink_file(adbl_path);
261
262exit_rename:
263 TALLOC_FREE(oldname);
264 TALLOC_FREE(adbl_path);
265 TALLOC_FREE(orig_path);
266 return ret;
267}
268
269static int atalk_unlink(struct vfs_handle_struct *handle,
270 const struct smb_filename *smb_fname)
271{
272 int ret = 0, i;
273 char *path = NULL;
274 char *adbl_path = NULL;
275 char *orig_path = NULL;
276 SMB_STRUCT_STAT adbl_info;
277 SMB_STRUCT_STAT orig_info;
278 NTSTATUS status;
279
280 ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
281
282 status = get_full_smb_filename(talloc_tos(), smb_fname, &path);
283 if (!NT_STATUS_IS_OK(status)) {
284 return ret;
285 }
286
287 /* no .AppleDouble sync if veto or hide list is empty,
288 * otherwise "Cannot find the specified file" error will be caused
289 */
290
291 if (!handle->conn->veto_list) return ret;
292 if (!handle->conn->hide_list) return ret;
293
294 for (i = 0; handle->conn->veto_list[i].name; i ++) {
295 if (strstr(handle->conn->veto_list[i].name, APPLEDOUBLE))
296 break;
297 }
298
299 if (!handle->conn->veto_list[i].name) {
300 for (i = 0; handle->conn->hide_list[i].name; i ++) {
301 if (strstr(handle->conn->hide_list[i].name, APPLEDOUBLE))
302 break;
303 else {
304 DEBUG(3, ("ATALK: %s is not hidden, skipped..\n",
305 APPLEDOUBLE));
306 goto exit_unlink;
307 }
308 }
309 }
310
311 if (atalk_build_paths(talloc_tos(), handle->conn->origpath, path,
312 &adbl_path, &orig_path,
313 &adbl_info, &orig_info, false) != 0)
314 goto exit_unlink;
315
316 if (S_ISDIR(orig_info.st_ex_mode) || S_ISREG(orig_info.st_ex_mode)) {
317 DEBUG(3, ("ATALK: %s has passed..\n", adbl_path));
318 goto exit_unlink;
319 }
320
321 atalk_unlink_file(adbl_path);
322
323exit_unlink:
324 TALLOC_FREE(path);
325 TALLOC_FREE(adbl_path);
326 TALLOC_FREE(orig_path);
327 return ret;
328}
329
330static int atalk_chmod(struct vfs_handle_struct *handle, const char *path, mode_t mode)
331{
332 int ret = 0;
333 char *adbl_path = 0;
334 char *orig_path = 0;
335 SMB_STRUCT_STAT adbl_info;
336 SMB_STRUCT_STAT orig_info;
337 TALLOC_CTX *ctx;
338
339 ret = SMB_VFS_NEXT_CHMOD(handle, path, mode);
340
341 if (!path) return ret;
342
343 if (!(ctx = talloc_init("chmod_file")))
344 return ret;
345
346 if (atalk_build_paths(ctx, handle->conn->origpath, path, &adbl_path,
347 &orig_path, &adbl_info, &orig_info,
348 false) != 0)
349 goto exit_chmod;
350
351 if (!S_ISDIR(orig_info.st_ex_mode) && !S_ISREG(orig_info.st_ex_mode)) {
352 DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
353 goto exit_chmod;
354 }
355
356 chmod(adbl_path, ADOUBLEMODE);
357
358exit_chmod:
359 talloc_destroy(ctx);
360 return ret;
361}
362
363static int atalk_chown(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
364{
365 int ret = 0;
366 char *adbl_path = 0;
367 char *orig_path = 0;
368 SMB_STRUCT_STAT adbl_info;
369 SMB_STRUCT_STAT orig_info;
370 TALLOC_CTX *ctx;
371
372 ret = SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
373
374 if (!path) return ret;
375
376 if (!(ctx = talloc_init("chown_file")))
377 return ret;
378
379 if (atalk_build_paths(ctx, handle->conn->origpath, path,
380 &adbl_path, &orig_path,
381 &adbl_info, &orig_info, false) != 0)
382 goto exit_chown;
383
384 if (!S_ISDIR(orig_info.st_ex_mode) && !S_ISREG(orig_info.st_ex_mode)) {
385 DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
386 goto exit_chown;
387 }
388
389 if (chown(adbl_path, uid, gid) == -1) {
390 DEBUG(3, ("ATALK: chown error %s\n", strerror(errno)));
391 }
392
393exit_chown:
394 talloc_destroy(ctx);
395 return ret;
396}
397
398static int atalk_lchown(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
399{
400 int ret = 0;
401 char *adbl_path = 0;
402 char *orig_path = 0;
403 SMB_STRUCT_STAT adbl_info;
404 SMB_STRUCT_STAT orig_info;
405 TALLOC_CTX *ctx;
406
407 ret = SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
408
409 if (!path) return ret;
410
411 if (!(ctx = talloc_init("lchown_file")))
412 return ret;
413
414 if (atalk_build_paths(ctx, handle->conn->origpath, path,
415 &adbl_path, &orig_path,
416 &adbl_info, &orig_info, false) != 0)
417 goto exit_lchown;
418
419 if (!S_ISDIR(orig_info.st_ex_mode) && !S_ISREG(orig_info.st_ex_mode)) {
420 DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
421 goto exit_lchown;
422 }
423
424 if (lchown(adbl_path, uid, gid) == -1) {
425 DEBUG(3, ("ATALK: lchown error %s\n", strerror(errno)));
426 }
427
428exit_lchown:
429 talloc_destroy(ctx);
430 return ret;
431}
432
433static struct vfs_fn_pointers vfs_netatalk_fns = {
434 .opendir = atalk_opendir,
435 .rmdir = atalk_rmdir,
436 .rename = atalk_rename,
437 .unlink = atalk_unlink,
438 .chmod = atalk_chmod,
439 .chown = atalk_chown,
440 .lchown = atalk_lchown,
441};
442
443NTSTATUS vfs_netatalk_init(void);
444NTSTATUS vfs_netatalk_init(void)
445{
446 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "netatalk",
447 &vfs_netatalk_fns);
448}
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