source3/modules/vfs_catia.c

   1 /*
   2  * Catia VFS module
   3  *
   4  * Implement a fixed mapping of forbidden NT characters in filenames that are
   5  * used a lot by the CAD package Catia.
   6  *
   7  * Yes, this a BAD BAD UGLY INCOMPLETE hack, but it helps quite some people
   8  * out there. Catia V4 on AIX uses characters like "<*$ a *lot*, all forbidden
   9  * under Windows...
  10  *
  11  * Copyright (C) Volker Lendecke, 2005
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 3 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  25  */
  26
  27
  28 #include "includes.h"
  29
  30 static char *catia_string_replace(TALLOC_CTX *ctx,
  31                         const char *s,
  32                         unsigned char oldc,
  33                         unsigned char newc)
  34 {
  35         smb_ucs2_t *tmpbuf = NULL;
  36         smb_ucs2_t *ptr = NULL;
  37         smb_ucs2_t old = oldc;
  38         char *ret = NULL;
  39         size_t converted_size;
  40
  41         if (!s) {
  42                 return NULL;
  43         }
  44
  45         if (!push_ucs2_talloc(ctx, &tmpbuf, s, &converted_size)) {
  46                 return NULL;
  47         }
  48
  49         ptr = tmpbuf;
  50
  51         for (;*ptr;ptr++) {
  52                 if (*ptr==old) {
  53                         *ptr=newc;
  54                 }
  55         }
  56
  57         if (!pull_ucs2_talloc(ctx, &ret, tmpbuf, &converted_size)) {
  58                 TALLOC_FREE(tmpbuf);
  59                 return NULL;
  60         }
  61         TALLOC_FREE(tmpbuf);
  62         return ret;
  63 }
  64
  65 static char *from_unix(TALLOC_CTX *ctx, const char *s)
  66 {
  67         char *ret = catia_string_replace(ctx, s, '\x22', '\xa8');
  68         ret = catia_string_replace(ctx, ret, '\x2a', '\xa4');
  69         ret = catia_string_replace(ctx, ret, '\x2f', '\xf8');
  70         ret = catia_string_replace(ctx, ret, '\x3a', '\xf7');
  71         ret = catia_string_replace(ctx, ret, '\x3c', '\xab');
  72         ret = catia_string_replace(ctx, ret, '\x3e', '\xbb');
  73         ret = catia_string_replace(ctx, ret, '\x3f', '\xbf');
  74         ret = catia_string_replace(ctx, ret, '\x5c', '\xff');
  75         ret = catia_string_replace(ctx, ret, '\x7c', '\xa6');
  76         return catia_string_replace(ctx, ret, ' ', '\xb1');
  77 }
  78
  79 static char *to_unix(TALLOC_CTX *ctx, const char *s)
  80 {
  81         char *ret = catia_string_replace(ctx, s, '\xa8', '\x22');
  82         ret = catia_string_replace(ctx, ret, '\xa4', '\x2a');
  83         ret = catia_string_replace(ctx, ret, '\xf8', '\x2f');
  84         ret = catia_string_replace(ctx, ret, '\xf7', '\x3a');
  85         ret = catia_string_replace(ctx, ret, '\xab', '\x3c');
  86         ret = catia_string_replace(ctx, ret, '\xbb', '\x3e');
  87         ret = catia_string_replace(ctx, ret, '\xbf', '\x3f');
  88         ret = catia_string_replace(ctx, ret, '\xff', '\x5c');
  89         ret = catia_string_replace(ctx, ret, '\xa6', '\x7c');
  90         return catia_string_replace(ctx, ret, '\xb1', ' ');
  91 }
  92
  93 static SMB_STRUCT_DIR *catia_opendir(vfs_handle_struct *handle,
  94                           const char *fname, const char *mask, uint32 attr)
  95 {
  96         char *name = to_unix(talloc_tos(), fname);
  97
  98         if (!name) {
  99                 errno = ENOMEM;
 100                 return NULL;
 101         }
 102         return SMB_VFS_NEXT_OPENDIR(handle, name, mask, attr);
 103 }
 104
 105 static SMB_STRUCT_DIRENT *catia_readdir(vfs_handle_struct *handle,
 106                                         SMB_STRUCT_DIR *dirp)
 107 {
 108         SMB_STRUCT_DIRENT *result = NULL;
 109         SMB_STRUCT_DIRENT *newdirent = NULL;
 110         char *newname;
 111         size_t newnamelen;
 112
 113         result = SMB_VFS_NEXT_READDIR(handle, dirp, NULL);
 114         if (result == NULL) {
 115                 return result;
 116         }
 117
 118         newname = from_unix(talloc_tos(), result->d_name);
 119         if (!newname) {
 120                 return NULL;
 121         }
 122         newnamelen = strlen(newname)+1;
 123         newdirent = (SMB_STRUCT_DIRENT *)TALLOC_ARRAY(talloc_tos(),
 124                                                 char,
 125                                                 sizeof(SMB_STRUCT_DIRENT)+
 126                                                         newnamelen);
 127         if (!newdirent) {
 128                 return NULL;
 129         }
 130         memcpy(newdirent, result, sizeof(SMB_STRUCT_DIRENT));
 131         memcpy(&newdirent->d_name, newname, newnamelen);
 132         return newdirent;
 133 }
 134
 135 static int catia_open(vfs_handle_struct *handle,
 136                       const char *fname,
 137                       files_struct *fsp,
 138                       int flags,
 139                       mode_t mode)
 140 {
 141         char *name = to_unix(talloc_tos(), fname);
 142
 143         if (!name) {
 144                 errno = ENOMEM;
 145                 return -1;
 146         }
 147         return SMB_VFS_NEXT_OPEN(handle, name, fsp, flags, mode);
 148 }
 149
 150 static int catia_rename(vfs_handle_struct *handle,
 151                         const char *oldname, const char *newname)
 152 {
 153         TALLOC_CTX *ctx = talloc_tos();
 154         char *oname = to_unix(ctx, oldname);
 155         char *nname = to_unix(ctx, newname);
 156
 157         if (!oname || !nname) {
 158                 errno = ENOMEM;
 159                 return -1;
 160         }
 161         DEBUG(10, ("converted old name: %s\n", oname));
 162         DEBUG(10, ("converted new name: %s\n", nname));
 163
 164         return SMB_VFS_NEXT_RENAME(handle, oname, nname);
 165 }
 166
 167 static int catia_stat(vfs_handle_struct *handle,
 168                       const char *fname, SMB_STRUCT_STAT *sbuf)
 169 {
 170         char *name = to_unix(talloc_tos(), fname);
 171
 172         if (!name) {
 173                 errno = ENOMEM;
 174                 return -1;
 175         }
 176         return SMB_VFS_NEXT_STAT(handle, name, sbuf);
 177 }
 178
 179 static int catia_lstat(vfs_handle_struct *handle,
 180                        const char *path, SMB_STRUCT_STAT *sbuf)
 181 {
 182         char *name = to_unix(talloc_tos(), path);
 183
 184         if (!name) {
 185                 errno = ENOMEM;
 186                 return -1;
 187         }
 188         return SMB_VFS_NEXT_LSTAT(handle, name, sbuf);
 189 }
 190
 191 static int catia_unlink(vfs_handle_struct *handle, const char *path)
 192 {
 193         char *name = to_unix(talloc_tos(), path);
 194
 195         if (!name) {
 196                 errno = ENOMEM;
 197                 return -1;
 198         }
 199         return SMB_VFS_NEXT_UNLINK(handle, name);
 200 }
 201
 202 static int catia_chmod(vfs_handle_struct *handle,
 203                        const char *path, mode_t mode)
 204 {
 205         char *name = to_unix(talloc_tos(), path);
 206
 207         if (!name) {
 208                 errno = ENOMEM;
 209                 return -1;
 210         }
 211         return SMB_VFS_NEXT_CHMOD(handle, name, mode);
 212 }
 213
 214 static int catia_chown(vfs_handle_struct *handle,
 215                        const char *path, uid_t uid, gid_t gid)
 216 {
 217         char *name = to_unix(talloc_tos(), path);
 218
 219         if (!name) {
 220                 errno = ENOMEM;
 221                 return -1;
 222         }
 223         return SMB_VFS_NEXT_CHOWN(handle, name, uid, gid);
 224 }
 225
 226 static int catia_lchown(vfs_handle_struct *handle,
 227                        const char *path, uid_t uid, gid_t gid)
 228 {
 229         char *name = to_unix(talloc_tos(), path);
 230
 231         if (!name) {
 232                 errno = ENOMEM;
 233                 return -1;
 234         }
 235         return SMB_VFS_NEXT_LCHOWN(handle, name, uid, gid);
 236 }
 237
 238 static int catia_chdir(vfs_handle_struct *handle,
 239                        const char *path)
 240 {
 241         char *name = to_unix(talloc_tos(), path);
 242
 243         if (!name) {
 244                 errno = ENOMEM;
 245                 return -1;
 246         }
 247         return SMB_VFS_NEXT_CHDIR(handle, name);
 248 }
 249
 250 static char *catia_getwd(vfs_handle_struct *handle, char *buf)
 251 {
 252         return SMB_VFS_NEXT_GETWD(handle, buf);
 253 }
 254
 255 static int catia_ntimes(vfs_handle_struct *handle,
 256                        const char *path, struct smb_file_time *ft)
 257 {
 258         return SMB_VFS_NEXT_NTIMES(handle, path, ft);
 259 }
 260
 261 static bool catia_symlink(vfs_handle_struct *handle,
 262                           const char *oldpath, const char *newpath)
 263 {
 264         return SMB_VFS_NEXT_SYMLINK(handle, oldpath, newpath);
 265 }
 266
 267 static bool catia_readlink(vfs_handle_struct *handle,
 268                            const char *path, char *buf, size_t bufsiz)
 269 {
 270         return SMB_VFS_NEXT_READLINK(handle, path, buf, bufsiz);
 271 }
 272
 273 static int catia_link(vfs_handle_struct *handle,
 274                       const char *oldpath, const char *newpath)
 275 {
 276         return SMB_VFS_NEXT_LINK(handle, oldpath, newpath);
 277 }
 278
 279 static int catia_mknod(vfs_handle_struct *handle,
 280                        const char *path, mode_t mode, SMB_DEV_T dev)
 281 {
 282         return SMB_VFS_NEXT_MKNOD(handle, path, mode, dev);
 283 }
 284
 285 static char *catia_realpath(vfs_handle_struct *handle,
 286                             const char *path, char *resolved_path)
 287 {
 288         return SMB_VFS_NEXT_REALPATH(handle, path, resolved_path);
 289 }
 290
 291 static NTSTATUS catia_get_nt_acl(vfs_handle_struct *handle,
 292                                const char *name, uint32 security_info,
 293                                struct  security_descriptor **ppdesc)
 294 {
 295         return SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info, ppdesc);
 296 }
 297
 298 static int catia_chmod_acl(vfs_handle_struct *handle,
 299                            const char *name, mode_t mode)
 300 {
 301         /* If the underlying VFS doesn't have ACL support... */
 302         if (!handle->vfs_next.ops.chmod_acl) {
 303                 errno = ENOSYS;
 304                 return -1;
 305         }
 306         return SMB_VFS_NEXT_CHMOD_ACL(handle, name, mode);
 307 }
 308
 309 /* VFS operations structure */
 310
 311 static vfs_op_tuple catia_op_tuples[] = {
 312
 313         /* Directory operations */
 314
 315         {SMB_VFS_OP(catia_opendir), SMB_VFS_OP_OPENDIR,
 316 SMB_VFS_LAYER_TRANSPARENT},
 317         {SMB_VFS_OP(catia_readdir), SMB_VFS_OP_READDIR,
 318 SMB_VFS_LAYER_TRANSPARENT},
 319
 320         /* File operations */
 321
 322         {SMB_VFS_OP(catia_open), SMB_VFS_OP_OPEN,
 323 SMB_VFS_LAYER_TRANSPARENT},
 324         {SMB_VFS_OP(catia_rename),                      SMB_VFS_OP_RENAME,
 325         SMB_VFS_LAYER_TRANSPARENT},
 326         {SMB_VFS_OP(catia_stat), SMB_VFS_OP_STAT,
 327 SMB_VFS_LAYER_TRANSPARENT},
 328         {SMB_VFS_OP(catia_lstat),                       SMB_VFS_OP_LSTAT,
 329 SMB_VFS_LAYER_TRANSPARENT},
 330         {SMB_VFS_OP(catia_unlink),                      SMB_VFS_OP_UNLINK,
 331         SMB_VFS_LAYER_TRANSPARENT},
 332         {SMB_VFS_OP(catia_chmod),                       SMB_VFS_OP_CHMOD,
 333 SMB_VFS_LAYER_TRANSPARENT},
 334         {SMB_VFS_OP(catia_chown),                       SMB_VFS_OP_CHOWN,
 335 SMB_VFS_LAYER_TRANSPARENT},
 336         {SMB_VFS_OP(catia_lchown),                      SMB_VFS_OP_LCHOWN,
 337 SMB_VFS_LAYER_TRANSPARENT},
 338         {SMB_VFS_OP(catia_chdir),                       SMB_VFS_OP_CHDIR,
 339 SMB_VFS_LAYER_TRANSPARENT},
 340         {SMB_VFS_OP(catia_getwd),                       SMB_VFS_OP_GETWD,
 341 SMB_VFS_LAYER_TRANSPARENT},
 342         {SMB_VFS_OP(catia_ntimes),                       SMB_VFS_OP_NTIMES,
 343 SMB_VFS_LAYER_TRANSPARENT},
 344         {SMB_VFS_OP(catia_symlink), SMB_VFS_OP_SYMLINK,
 345 SMB_VFS_LAYER_TRANSPARENT},
 346         {SMB_VFS_OP(catia_readlink), SMB_VFS_OP_READLINK,
 347 SMB_VFS_LAYER_TRANSPARENT},
 348         {SMB_VFS_OP(catia_link), SMB_VFS_OP_LINK,
 349 SMB_VFS_LAYER_TRANSPARENT},
 350         {SMB_VFS_OP(catia_mknod),                       SMB_VFS_OP_MKNOD,
 351 SMB_VFS_LAYER_TRANSPARENT},
 352         {SMB_VFS_OP(catia_realpath), SMB_VFS_OP_REALPATH,
 353 SMB_VFS_LAYER_TRANSPARENT},
 354
 355         /* NT File ACL operations */
 356
 357         {SMB_VFS_OP(catia_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
 358 SMB_VFS_LAYER_TRANSPARENT},
 359
 360         /* POSIX ACL operations */
 361
 362         {SMB_VFS_OP(catia_chmod_acl), SMB_VFS_OP_CHMOD_ACL,
 363 SMB_VFS_LAYER_TRANSPARENT},
 364
 365
 366         {NULL,                                          SMB_VFS_OP_NOOP,
 367 SMB_VFS_LAYER_NOOP}
 368 };
 369
 370 NTSTATUS vfs_catia_init(void);
 371 NTSTATUS vfs_catia_init(void)
 372 {
 373         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "catia",
 374 catia_op_tuples);
 375 }