VERSION: Disable git snapshots for the 4.1.2 release.
[Samba.git] / source3 / modules / vfs_cap.c
blobc52e30c299d10e3ae64acd2f63daf76a1c0cb3ed
1 /*
2 * CAP VFS module for Samba 3.x Version 0.3
4 * Copyright (C) Tim Potter, 1999-2000
5 * Copyright (C) Alexander Bokovoy, 2002-2003
6 * Copyright (C) Stefan (metze) Metzmacher, 2003
7 * Copyright (C) TAKAHASHI Motonobu (monyo), 2003
8 * Copyright (C) Jeremy Allison, 2007
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 3 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see <http://www.gnu.org/licenses/>.
25 #include "includes.h"
26 #include "smbd/smbd.h"
28 /* cap functions */
29 static char *capencode(TALLOC_CTX *ctx, const char *from);
30 static char *capdecode(TALLOC_CTX *ctx, const char *from);
32 static uint64_t cap_disk_free(vfs_handle_struct *handle, const char *path,
33 bool small_query, uint64_t *bsize,
34 uint64_t *dfree, uint64_t *dsize)
36 char *cappath = capencode(talloc_tos(), path);
38 if (!cappath) {
39 errno = ENOMEM;
40 return (uint64_t)-1;
42 return SMB_VFS_NEXT_DISK_FREE(handle, cappath, small_query, bsize,
43 dfree, dsize);
46 static DIR *cap_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
48 char *capname = capencode(talloc_tos(), fname);
50 if (!capname) {
51 errno = ENOMEM;
52 return NULL;
54 return SMB_VFS_NEXT_OPENDIR(handle, capname, mask, attr);
57 static struct dirent *cap_readdir(vfs_handle_struct *handle,
58 DIR *dirp,
59 SMB_STRUCT_STAT *sbuf)
61 struct dirent *result;
62 struct dirent *newdirent;
63 char *newname;
64 size_t newnamelen;
65 DEBUG(3,("cap: cap_readdir\n"));
67 result = SMB_VFS_NEXT_READDIR(handle, dirp, NULL);
68 if (!result) {
69 return NULL;
72 newname = capdecode(talloc_tos(), result->d_name);
73 if (!newname) {
74 return NULL;
76 DEBUG(3,("cap: cap_readdir: %s\n", newname));
77 newnamelen = strlen(newname)+1;
78 newdirent = (struct dirent *)talloc_array(talloc_tos(),
79 char,
80 sizeof(struct dirent)+
81 newnamelen);
82 if (!newdirent) {
83 return NULL;
85 memcpy(newdirent, result, sizeof(struct dirent));
86 memcpy(&newdirent->d_name, newname, newnamelen);
87 return newdirent;
90 static int cap_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
92 char *cappath = capencode(talloc_tos(), path);
94 if (!cappath) {
95 errno = ENOMEM;
96 return -1;
98 return SMB_VFS_NEXT_MKDIR(handle, cappath, mode);
101 static int cap_rmdir(vfs_handle_struct *handle, const char *path)
103 char *cappath = capencode(talloc_tos(), path);
105 if (!cappath) {
106 errno = ENOMEM;
107 return -1;
109 return SMB_VFS_NEXT_RMDIR(handle, cappath);
112 static int cap_open(vfs_handle_struct *handle, struct smb_filename *smb_fname,
113 files_struct *fsp, int flags, mode_t mode)
115 char *cappath;
116 char *tmp_base_name = NULL;
117 int ret;
119 cappath = capencode(talloc_tos(), smb_fname->base_name);
121 if (!cappath) {
122 errno = ENOMEM;
123 return -1;
126 tmp_base_name = smb_fname->base_name;
127 smb_fname->base_name = cappath;
129 DEBUG(3,("cap: cap_open for %s\n", smb_fname_str_dbg(smb_fname)));
130 ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
132 smb_fname->base_name = tmp_base_name;
133 TALLOC_FREE(cappath);
135 return ret;
138 static int cap_rename(vfs_handle_struct *handle,
139 const struct smb_filename *smb_fname_src,
140 const struct smb_filename *smb_fname_dst)
142 char *capold = NULL;
143 char *capnew = NULL;
144 struct smb_filename *smb_fname_src_tmp = NULL;
145 struct smb_filename *smb_fname_dst_tmp = NULL;
146 int ret = -1;
148 capold = capencode(talloc_tos(), smb_fname_src->base_name);
149 capnew = capencode(talloc_tos(), smb_fname_dst->base_name);
150 if (!capold || !capnew) {
151 errno = ENOMEM;
152 goto out;
155 /* Setup temporary smb_filename structs. */
156 smb_fname_src_tmp = cp_smb_filename(talloc_tos(), smb_fname_src);
157 if (smb_fname_src_tmp == NULL) {
158 errno = ENOMEM;
159 goto out;
161 smb_fname_dst_tmp = cp_smb_filename(talloc_tos(), smb_fname_dst);
162 if (smb_fname_dst_tmp == NULL) {
163 errno = ENOMEM;
164 goto out;
167 smb_fname_src_tmp->base_name = capold;
168 smb_fname_dst_tmp->base_name = capnew;
170 ret = SMB_VFS_NEXT_RENAME(handle, smb_fname_src_tmp,
171 smb_fname_dst_tmp);
172 out:
173 TALLOC_FREE(capold);
174 TALLOC_FREE(capnew);
175 TALLOC_FREE(smb_fname_src_tmp);
176 TALLOC_FREE(smb_fname_dst_tmp);
178 return ret;
181 static int cap_stat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
183 char *cappath;
184 char *tmp_base_name = NULL;
185 int ret;
187 cappath = capencode(talloc_tos(), smb_fname->base_name);
189 if (!cappath) {
190 errno = ENOMEM;
191 return -1;
194 tmp_base_name = smb_fname->base_name;
195 smb_fname->base_name = cappath;
197 ret = SMB_VFS_NEXT_STAT(handle, smb_fname);
199 smb_fname->base_name = tmp_base_name;
200 TALLOC_FREE(cappath);
202 return ret;
205 static int cap_lstat(vfs_handle_struct *handle, struct smb_filename *smb_fname)
207 char *cappath;
208 char *tmp_base_name = NULL;
209 int ret;
211 cappath = capencode(talloc_tos(), smb_fname->base_name);
213 if (!cappath) {
214 errno = ENOMEM;
215 return -1;
218 tmp_base_name = smb_fname->base_name;
219 smb_fname->base_name = cappath;
221 ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
223 smb_fname->base_name = tmp_base_name;
224 TALLOC_FREE(cappath);
226 return ret;
229 static int cap_unlink(vfs_handle_struct *handle,
230 const struct smb_filename *smb_fname)
232 struct smb_filename *smb_fname_tmp = NULL;
233 char *cappath = NULL;
234 int ret;
236 cappath = capencode(talloc_tos(), smb_fname->base_name);
237 if (!cappath) {
238 errno = ENOMEM;
239 return -1;
242 /* Setup temporary smb_filename structs. */
243 smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
244 if (smb_fname_tmp == NULL) {
245 errno = ENOMEM;
246 return -1;
249 smb_fname_tmp->base_name = cappath;
251 ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname_tmp);
253 TALLOC_FREE(smb_fname_tmp);
254 return ret;
257 static int cap_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
259 char *cappath = capencode(talloc_tos(), path);
261 if (!cappath) {
262 errno = ENOMEM;
263 return -1;
265 return SMB_VFS_NEXT_CHMOD(handle, cappath, mode);
268 static int cap_chown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
270 char *cappath = capencode(talloc_tos(), path);
272 if (!cappath) {
273 errno = ENOMEM;
274 return -1;
276 return SMB_VFS_NEXT_CHOWN(handle, cappath, uid, gid);
279 static int cap_lchown(vfs_handle_struct *handle, const char *path, uid_t uid, gid_t gid)
281 char *cappath = capencode(talloc_tos(), path);
283 if (!cappath) {
284 errno = ENOMEM;
285 return -1;
287 return SMB_VFS_NEXT_LCHOWN(handle, cappath, uid, gid);
290 static int cap_chdir(vfs_handle_struct *handle, const char *path)
292 char *cappath = capencode(talloc_tos(), path);
294 if (!cappath) {
295 errno = ENOMEM;
296 return -1;
298 DEBUG(3,("cap: cap_chdir for %s\n", path));
299 return SMB_VFS_NEXT_CHDIR(handle, cappath);
302 static int cap_ntimes(vfs_handle_struct *handle,
303 const struct smb_filename *smb_fname,
304 struct smb_file_time *ft)
306 struct smb_filename *smb_fname_tmp = NULL;
307 char *cappath = NULL;
308 int ret;
310 cappath = capencode(talloc_tos(), smb_fname->base_name);
312 if (!cappath) {
313 errno = ENOMEM;
314 return -1;
317 /* Setup temporary smb_filename structs. */
318 smb_fname_tmp = cp_smb_filename(talloc_tos(), smb_fname);
319 if (smb_fname_tmp == NULL) {
320 errno = ENOMEM;
321 return -1;
324 smb_fname_tmp->base_name = cappath;
326 ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname_tmp, ft);
328 TALLOC_FREE(smb_fname_tmp);
329 return ret;
333 static int cap_symlink(vfs_handle_struct *handle, const char *oldpath,
334 const char *newpath)
336 char *capold = capencode(talloc_tos(), oldpath);
337 char *capnew = capencode(talloc_tos(), newpath);
339 if (!capold || !capnew) {
340 errno = ENOMEM;
341 return -1;
343 return SMB_VFS_NEXT_SYMLINK(handle, capold, capnew);
346 static int cap_readlink(vfs_handle_struct *handle, const char *path,
347 char *buf, size_t bufsiz)
349 char *cappath = capencode(talloc_tos(), path);
351 if (!cappath) {
352 errno = ENOMEM;
353 return -1;
355 return SMB_VFS_NEXT_READLINK(handle, cappath, buf, bufsiz);
358 static int cap_link(vfs_handle_struct *handle, const char *oldpath, const char *newpath)
360 char *capold = capencode(talloc_tos(), oldpath);
361 char *capnew = capencode(talloc_tos(), newpath);
363 if (!capold || !capnew) {
364 errno = ENOMEM;
365 return -1;
367 return SMB_VFS_NEXT_LINK(handle, capold, capnew);
370 static int cap_mknod(vfs_handle_struct *handle, const char *path, mode_t mode, SMB_DEV_T dev)
372 char *cappath = capencode(talloc_tos(), path);
374 if (!cappath) {
375 errno = ENOMEM;
376 return -1;
378 return SMB_VFS_NEXT_MKNOD(handle, cappath, mode, dev);
381 static char *cap_realpath(vfs_handle_struct *handle, const char *path)
383 /* monyo need capencode'ed and capdecode'ed? */
384 char *cappath = capencode(talloc_tos(), path);
386 if (!cappath) {
387 errno = ENOMEM;
388 return NULL;
390 return SMB_VFS_NEXT_REALPATH(handle, cappath);
393 static int cap_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
395 char *cappath = capencode(talloc_tos(), path);
397 /* If the underlying VFS doesn't have ACL support... */
398 if (!cappath) {
399 errno = ENOMEM;
400 return -1;
402 return SMB_VFS_NEXT_CHMOD_ACL(handle, cappath, mode);
405 static SMB_ACL_T cap_sys_acl_get_file(vfs_handle_struct *handle,
406 const char *path, SMB_ACL_TYPE_T type,
407 TALLOC_CTX *mem_ctx)
409 char *cappath = capencode(talloc_tos(), path);
411 if (!cappath) {
412 errno = ENOMEM;
413 return (SMB_ACL_T)NULL;
415 return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, cappath, type, mem_ctx);
418 static int cap_sys_acl_set_file(vfs_handle_struct *handle, const char *path, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
420 char *cappath = capencode(talloc_tos(), path);
422 if (!cappath) {
423 errno = ENOMEM;
424 return -1;
426 return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, cappath, acltype, theacl);
429 static int cap_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path)
431 char *cappath = capencode(talloc_tos(), path);
433 if (!cappath) {
434 errno = ENOMEM;
435 return -1;
437 return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, cappath);
440 static ssize_t cap_getxattr(vfs_handle_struct *handle, const char *path, const char *name, void *value, size_t size)
442 char *cappath = capencode(talloc_tos(), path);
443 char *capname = capencode(talloc_tos(), name);
445 if (!cappath || !capname) {
446 errno = ENOMEM;
447 return -1;
449 return SMB_VFS_NEXT_GETXATTR(handle, cappath, capname, value, size);
452 static ssize_t cap_fgetxattr(vfs_handle_struct *handle, struct files_struct *fsp, const char *path, void *value, size_t size)
454 char *cappath = capencode(talloc_tos(), path);
456 if (!cappath) {
457 errno = ENOMEM;
458 return -1;
460 return SMB_VFS_NEXT_FGETXATTR(handle, fsp, cappath, value, size);
463 static ssize_t cap_listxattr(vfs_handle_struct *handle, const char *path, char *list, size_t size)
465 char *cappath = capencode(talloc_tos(), path);
467 if (!cappath) {
468 errno = ENOMEM;
469 return -1;
471 return SMB_VFS_NEXT_LISTXATTR(handle, cappath, list, size);
474 static int cap_removexattr(vfs_handle_struct *handle, const char *path, const char *name)
476 char *cappath = capencode(talloc_tos(), path);
477 char *capname = capencode(talloc_tos(), name);
479 if (!cappath || !capname) {
480 errno = ENOMEM;
481 return -1;
483 return SMB_VFS_NEXT_REMOVEXATTR(handle, cappath, capname);
486 static int cap_fremovexattr(vfs_handle_struct *handle, struct files_struct *fsp, const char *path)
488 char *cappath = capencode(talloc_tos(), path);
490 if (!cappath) {
491 errno = ENOMEM;
492 return -1;
494 return SMB_VFS_NEXT_FREMOVEXATTR(handle, fsp, cappath);
497 static int cap_setxattr(vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags)
499 char *cappath = capencode(talloc_tos(), path);
500 char *capname = capencode(talloc_tos(), name);
502 if (!cappath || !capname) {
503 errno = ENOMEM;
504 return -1;
506 return SMB_VFS_NEXT_SETXATTR(handle, cappath, capname, value, size, flags);
509 static int cap_fsetxattr(vfs_handle_struct *handle, struct files_struct *fsp, const char *path, const void *value, size_t size, int flags)
511 char *cappath = capencode(talloc_tos(), path);
513 if (!cappath) {
514 errno = ENOMEM;
515 return -1;
517 return SMB_VFS_NEXT_FSETXATTR(handle, fsp, cappath, value, size, flags);
520 static struct vfs_fn_pointers vfs_cap_fns = {
521 .disk_free_fn = cap_disk_free,
522 .opendir_fn = cap_opendir,
523 .readdir_fn = cap_readdir,
524 .mkdir_fn = cap_mkdir,
525 .rmdir_fn = cap_rmdir,
526 .open_fn = cap_open,
527 .rename_fn = cap_rename,
528 .stat_fn = cap_stat,
529 .lstat_fn = cap_lstat,
530 .unlink_fn = cap_unlink,
531 .chmod_fn = cap_chmod,
532 .chown_fn = cap_chown,
533 .lchown_fn = cap_lchown,
534 .chdir_fn = cap_chdir,
535 .ntimes_fn = cap_ntimes,
536 .symlink_fn = cap_symlink,
537 .readlink_fn = cap_readlink,
538 .link_fn = cap_link,
539 .mknod_fn = cap_mknod,
540 .realpath_fn = cap_realpath,
541 .chmod_acl_fn = cap_chmod_acl,
542 .sys_acl_get_file_fn = cap_sys_acl_get_file,
543 .sys_acl_set_file_fn = cap_sys_acl_set_file,
544 .sys_acl_delete_def_file_fn = cap_sys_acl_delete_def_file,
545 .getxattr_fn = cap_getxattr,
546 .fgetxattr_fn = cap_fgetxattr,
547 .listxattr_fn = cap_listxattr,
548 .removexattr_fn = cap_removexattr,
549 .fremovexattr_fn = cap_fremovexattr,
550 .setxattr_fn = cap_setxattr,
551 .fsetxattr_fn = cap_fsetxattr
554 NTSTATUS vfs_cap_init(void);
555 NTSTATUS vfs_cap_init(void)
557 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "cap",
558 &vfs_cap_fns);
561 /* For CAP functions */
562 #define hex_tag ':'
563 #define hex2bin(c) hex2bin_table[(unsigned char)(c)]
564 #define bin2hex(c) bin2hex_table[(unsigned char)(c)]
565 #define is_hex(s) ((s)[0] == hex_tag)
567 static unsigned char hex2bin_table[256] = {
568 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 */
569 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 */
570 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 */
571 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, /* 0x30 */
572 0000, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0000, /* 0x40 */
573 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000,
574 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 */
575 0000, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0000, /* 0x60 */
576 0000, 0000, 0000, 0000, 0000, 0000, 0000, 0000,
577 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 */
578 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80 */
579 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90 */
580 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xa0 */
581 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xb0 */
582 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xc0 */
583 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xd0 */
584 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xe0 */
585 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xf0 */
587 static unsigned char bin2hex_table[256] = "0123456789abcdef";
589 /*******************************************************************
590 original code -> ":xx" - CAP format
591 ********************************************************************/
593 static char *capencode(TALLOC_CTX *ctx, const char *from)
595 char *out = NULL;
596 const char *p1;
597 char *to = NULL;
598 size_t len = 0;
600 for (p1 = from; *p1; p1++) {
601 if ((unsigned char)*p1 >= 0x80) {
602 len += 3;
603 } else {
604 len++;
607 len++;
609 to = talloc_array(ctx, char, len);
610 if (!to) {
611 return NULL;
614 for (out = to; *from;) {
615 /* buffer husoku error */
616 if ((unsigned char)*from >= 0x80) {
617 *out++ = hex_tag;
618 *out++ = bin2hex (((*from)>>4)&0x0f);
619 *out++ = bin2hex ((*from)&0x0f);
620 from++;
621 } else {
622 *out++ = *from++;
625 *out = '\0';
626 return to;
629 /*******************************************************************
630 CAP -> original code
631 ********************************************************************/
632 /* ":xx" -> a byte */
634 static char *capdecode(TALLOC_CTX *ctx, const char *from)
636 const char *p1;
637 char *out = NULL;
638 char *to = NULL;
639 size_t len = 0;
641 for (p1 = from; *p1; len++) {
642 if (is_hex(p1)) {
643 p1 += 3;
644 } else {
645 p1++;
648 len++;
650 to = talloc_array(ctx, char, len);
651 if (!to) {
652 return NULL;
655 for (out = to; *from;) {
656 if (is_hex(from)) {
657 *out++ = (hex2bin(from[1])<<4) | (hex2bin(from[2]));
658 from += 3;
659 } else {
660 *out++ = *from++;
663 *out = '\0';
664 return to;