source: branches/samba-3.3.x/source/modules/vfs_netatalk.c

Last change on this file was 206, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.0.0 level (psmedley's port)
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, char **adbl_path, char **orig_path,
33 SMB_STRUCT_STAT *adbl_info, SMB_STRUCT_STAT *orig_info);
34
35static int atalk_unlink_file(const char *path);
36
37static int atalk_get_path_ptr(char *path)
38{
39 int i = 0;
40 int ptr = 0;
41
42 for (i = 0; path[i]; i ++) {
43 if (path[i] == '/')
44 ptr = i;
45 /* get out some 'spam';) from win32's file name */
46 else if (path[i] == ':') {
47 path[i] = '\0';
48 break;
49 }
50 }
51
52 return ptr;
53}
54
55static int atalk_build_paths(TALLOC_CTX *ctx, const char *path, const char *fname,
56 char **adbl_path, char **orig_path,
57 SMB_STRUCT_STAT *adbl_info, SMB_STRUCT_STAT *orig_info)
58{
59 int ptr0 = 0;
60 int ptr1 = 0;
61 char *dname = 0;
62 char *name = 0;
63
64 if (!ctx || !path || !fname || !adbl_path || !orig_path ||
65 !adbl_info || !orig_info)
66 return -1;
67#if 0
68 DEBUG(3, ("ATALK: PATH: %s[%s]\n", path, fname));
69#endif
70 if (strstr(path, APPLEDOUBLE) || strstr(fname, APPLEDOUBLE)) {
71 DEBUG(3, ("ATALK: path %s[%s] already contains %s\n", path, fname, APPLEDOUBLE));
72 return -1;
73 }
74
75 if (fname[0] == '.') ptr0 ++;
76 if (fname[1] == '/') ptr0 ++;
77
78 *orig_path = talloc_asprintf(ctx, "%s/%s", path, &fname[ptr0]);
79
80 /* get pointer to last '/' */
81 ptr1 = atalk_get_path_ptr(*orig_path);
82
83 sys_lstat(*orig_path, orig_info);
84
85 if (S_ISDIR(orig_info->st_mode)) {
86 *adbl_path = talloc_asprintf(ctx, "%s/%s/%s/",
87 path, &fname[ptr0], APPLEDOUBLE);
88 } else {
89 dname = talloc_strdup(ctx, *orig_path);
90 dname[ptr1] = '\0';
91 name = *orig_path;
92 *adbl_path = talloc_asprintf(ctx, "%s/%s/%s",
93 dname, APPLEDOUBLE, &name[ptr1 + 1]);
94 }
95#if 0
96 DEBUG(3, ("ATALK: DEBUG:\n%s\n%s\n", *orig_path, *adbl_path));
97#endif
98 sys_lstat(*adbl_path, adbl_info);
99 return 0;
100}
101
102static int atalk_unlink_file(const char *path)
103{
104 int ret = 0;
105
106 become_root();
107 ret = unlink(path);
108 unbecome_root();
109
110 return ret;
111}
112
113static void atalk_add_to_list(name_compare_entry **list)
114{
115 int i, count = 0;
116 name_compare_entry *new_list = 0;
117 name_compare_entry *cur_list = 0;
118
119 cur_list = *list;
120
121 if (cur_list) {
122 for (i = 0, count = 0; cur_list[i].name; i ++, count ++) {
123 if (strstr(cur_list[i].name, APPLEDOUBLE))
124 return;
125 }
126 }
127
128 if (!(new_list = SMB_CALLOC_ARRAY(name_compare_entry, (count == 0 ? 1 : count + 1))))
129 return;
130
131 for (i = 0; i < count; i ++) {
132 new_list[i].name = SMB_STRDUP(cur_list[i].name);
133 new_list[i].is_wild = cur_list[i].is_wild;
134 }
135
136 new_list[i].name = SMB_STRDUP(APPLEDOUBLE);
137 new_list[i].is_wild = False;
138
139 free_namearray(*list);
140
141 *list = new_list;
142 new_list = 0;
143 cur_list = 0;
144}
145
146static void atalk_rrmdir(TALLOC_CTX *ctx, char *path)
147{
148 char *dpath;
149 SMB_STRUCT_DIRENT *dent = 0;
150 SMB_STRUCT_DIR *dir;
151
152 if (!path) return;
153
154 dir = sys_opendir(path);
155 if (!dir) return;
156
157 while (NULL != (dent = sys_readdir(dir))) {
158 if (strcmp(dent->d_name, ".") == 0 ||
159 strcmp(dent->d_name, "..") == 0)
160 continue;
161 if (!(dpath = talloc_asprintf(ctx, "%s/%s",
162 path, dent->d_name)))
163 continue;
164 atalk_unlink_file(dpath);
165 }
166
167 sys_closedir(dir);
168}
169
170/* Disk operations */
171
172/* Directory operations */
173
174static SMB_STRUCT_DIR *atalk_opendir(struct vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
175{
176 SMB_STRUCT_DIR *ret = 0;
177
178 ret = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
179
180 /*
181 * when we try to perform delete operation upon file which has fork
182 * in ./.AppleDouble and this directory wasn't hidden by Samba,
183 * MS Windows explorer causes the error: "Cannot find the specified file"
184 * There is some workaround to avoid this situation, i.e. if
185 * connection has not .AppleDouble entry in either veto or hide
186 * list then it would be nice to add one.
187 */
188
189 atalk_add_to_list(&handle->conn->hide_list);
190 atalk_add_to_list(&handle->conn->veto_list);
191
192 return ret;
193}
194
195static int atalk_rmdir(struct vfs_handle_struct *handle, const char *path)
196{
197 bool add = False;
198 TALLOC_CTX *ctx = 0;
199 char *dpath;
200
201 if (!handle->conn->origpath || !path) goto exit_rmdir;
202
203 /* due to there is no way to change bDeleteVetoFiles variable
204 * from this module, gotta use talloc stuff..
205 */
206
207 strstr(path, APPLEDOUBLE) ? (add = False) : (add = True);
208
209 if (!(ctx = talloc_init("remove_directory")))
210 goto exit_rmdir;
211
212 if (!(dpath = talloc_asprintf(ctx, "%s/%s%s",
213 handle->conn->origpath, path, add ? "/"APPLEDOUBLE : "")))
214 goto exit_rmdir;
215
216 atalk_rrmdir(ctx, dpath);
217
218exit_rmdir:
219 talloc_destroy(ctx);
220 return SMB_VFS_NEXT_RMDIR(handle, path);
221}
222
223/* File operations */
224
225static int atalk_rename(struct vfs_handle_struct *handle, const char *oldname, const char *newname)
226{
227 int ret = 0;
228 char *adbl_path = 0;
229 char *orig_path = 0;
230 SMB_STRUCT_STAT adbl_info;
231 SMB_STRUCT_STAT orig_info;
232 TALLOC_CTX *ctx;
233
234 ret = SMB_VFS_NEXT_RENAME(handle, oldname, newname);
235
236 if (!oldname) return ret;
237
238 if (!(ctx = talloc_init("rename_file")))
239 return ret;
240
241 if (atalk_build_paths(ctx, handle->conn->origpath, oldname, &adbl_path, &orig_path,
242 &adbl_info, &orig_info) != 0)
243 goto exit_rename;
244
245 if (S_ISDIR(orig_info.st_mode) || S_ISREG(orig_info.st_mode)) {
246 DEBUG(3, ("ATALK: %s has passed..\n", adbl_path));
247 goto exit_rename;
248 }
249
250 atalk_unlink_file(adbl_path);
251
252exit_rename:
253 talloc_destroy(ctx);
254 return ret;
255}
256
257static int atalk_unlink(struct vfs_handle_struct *handle, const char *path)
258{
259 int ret = 0, i;
260 char *adbl_path = 0;
261 char *orig_path = 0;
262 SMB_STRUCT_STAT adbl_info;
263 SMB_STRUCT_STAT orig_info;
264 TALLOC_CTX *ctx;
265
266 ret = SMB_VFS_NEXT_UNLINK(handle, path);
267
268 if (!path) return ret;
269
270 /* no .AppleDouble sync if veto or hide list is empty,
271 * otherwise "Cannot find the specified file" error will be caused
272 */
273
274 if (!handle->conn->veto_list) return ret;
275 if (!handle->conn->hide_list) return ret;
276
277 for (i = 0; handle->conn->veto_list[i].name; i ++) {
278 if (strstr(handle->conn->veto_list[i].name, APPLEDOUBLE))
279 break;
280 }
281
282 if (!handle->conn->veto_list[i].name) {
283 for (i = 0; handle->conn->hide_list[i].name; i ++) {
284 if (strstr(handle->conn->hide_list[i].name, APPLEDOUBLE))
285 break;
286 else {
287 DEBUG(3, ("ATALK: %s is not hidden, skipped..\n",
288 APPLEDOUBLE));
289 return ret;
290 }
291 }
292 }
293
294 if (!(ctx = talloc_init("unlink_file")))
295 return ret;
296
297 if (atalk_build_paths(ctx, handle->conn->origpath, path, &adbl_path, &orig_path,
298 &adbl_info, &orig_info) != 0)
299 goto exit_unlink;
300
301 if (S_ISDIR(orig_info.st_mode) || S_ISREG(orig_info.st_mode)) {
302 DEBUG(3, ("ATALK: %s has passed..\n", adbl_path));
303 goto exit_unlink;
304 }
305
306 atalk_unlink_file(adbl_path);
307
308exit_unlink:
309 talloc_destroy(ctx);
310 return ret;
311}
312
313static int atalk_chmod(struct vfs_handle_struct *handle, const char *path, mode_t mode)
314{
315 int ret = 0;
316 char *adbl_path = 0;
317 char *orig_path = 0;
318 SMB_STRUCT_STAT adbl_info;
319 SMB_STRUCT_STAT orig_info;
320 TALLOC_CTX *ctx;
321
322 ret = SMB_VFS_NEXT_CHMOD(handle, path, mode);
323
324 if (!path) return ret;
325
326 if (!(ctx = talloc_init("chmod_file")))
327 return ret;
328
329 if (atalk_build_paths(ctx, handle->conn->origpath, path, &adbl_path, &orig_path,
330 &adbl_info, &orig_info) != 0)
331 goto exit_chmod;
332
333 if (!S_ISDIR(orig_info.st_mode) && !S_ISREG(orig_info.st_mode)) {
334 DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
335 goto exit_chmod;
336 }
337
338 chmod(adbl_path, ADOUBLEMODE);
339
340exit_chmod:
341 talloc_destroy(ctx);
342 return ret;
343}
344
345static int atalk_chown(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
346{
347 int ret = 0;
348 char *adbl_path = 0;
349 char *orig_path = 0;
350 SMB_STRUCT_STAT adbl_info;
351 SMB_STRUCT_STAT orig_info;
352 TALLOC_CTX *ctx;
353
354 ret = SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
355
356 if (!path) return ret;
357
358 if (!(ctx = talloc_init("chown_file")))
359 return ret;
360
361 if (atalk_build_paths(ctx, handle->conn->origpath, path, &adbl_path, &orig_path,
362 &adbl_info, &orig_info) != 0)
363 goto exit_chown;
364
365 if (!S_ISDIR(orig_info.st_mode) && !S_ISREG(orig_info.st_mode)) {
366 DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
367 goto exit_chown;
368 }
369
370 if (chown(adbl_path, uid, gid) == -1) {
371 DEBUG(3, ("ATALK: chown error %s\n", strerror(errno)));
372 }
373
374exit_chown:
375 talloc_destroy(ctx);
376 return ret;
377}
378
379static int atalk_lchown(struct vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
380{
381 int ret = 0;
382 char *adbl_path = 0;
383 char *orig_path = 0;
384 SMB_STRUCT_STAT adbl_info;
385 SMB_STRUCT_STAT orig_info;
386 TALLOC_CTX *ctx;
387
388 ret = SMB_VFS_NEXT_CHOWN(handle, path, uid, gid);
389
390 if (!path) return ret;
391
392 if (!(ctx = talloc_init("lchown_file")))
393 return ret;
394
395 if (atalk_build_paths(ctx, handle->conn->origpath, path, &adbl_path, &orig_path,
396 &adbl_info, &orig_info) != 0)
397 goto exit_lchown;
398
399 if (!S_ISDIR(orig_info.st_mode) && !S_ISREG(orig_info.st_mode)) {
400 DEBUG(3, ("ATALK: %s has passed..\n", orig_path));
401 goto exit_lchown;
402 }
403
404 if (sys_lchown(adbl_path, uid, gid) == -1) {
405 DEBUG(3, ("ATALK: lchown error %s\n", strerror(errno)));
406 }
407
408exit_lchown:
409 talloc_destroy(ctx);
410 return ret;
411}
412
413static vfs_op_tuple atalk_ops[] = {
414
415 /* Directory operations */
416
417 {SMB_VFS_OP(atalk_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_TRANSPARENT},
418 {SMB_VFS_OP(atalk_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_TRANSPARENT},
419
420 /* File operations */
421
422 {SMB_VFS_OP(atalk_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_TRANSPARENT},
423 {SMB_VFS_OP(atalk_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_TRANSPARENT},
424 {SMB_VFS_OP(atalk_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_TRANSPARENT},
425 {SMB_VFS_OP(atalk_chown), SMB_VFS_OP_CHOWN, SMB_VFS_LAYER_TRANSPARENT},
426 {SMB_VFS_OP(atalk_lchown), SMB_VFS_OP_LCHOWN, SMB_VFS_LAYER_TRANSPARENT},
427
428 /* Finish VFS operations definition */
429
430 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
431};
432
433NTSTATUS vfs_netatalk_init(void);
434NTSTATUS vfs_netatalk_init(void)
435{
436 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "netatalk", atalk_ops);
437}
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