source/smbwrapper/smbw_dir.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4    SMB wrapper directory functions
   5    Copyright (C) Andrew Tridgell 1998
   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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 #include "realcalls.h"
  24
  25 extern pstring smbw_cwd;
  26 extern fstring smbw_prefix;
  27
  28 static struct smbw_dir *smbw_dirs;
  29
  30 extern struct bitmap *smbw_file_bmap;
  31
  32 extern int smbw_busy;
  33
  34 /*****************************************************
  35 map a fd to a smbw_dir structure
  36 *******************************************************/
  37 struct smbw_dir *smbw_dir(int fd)
  38 {
  39         struct smbw_dir *dir;
  40
  41         for (dir=smbw_dirs;dir;dir=dir->next) {
  42                 if (dir->fd == fd) return dir;
  43         }
  44         return NULL;
  45 }
  46
  47 /*****************************************************
  48 check if a DIR* is one of ours
  49 *******************************************************/
  50 int smbw_dirp(DIR *dirp)
  51 {
  52         struct smbw_dir *d = (struct smbw_dir *)dirp;
  53         struct smbw_dir *dir;
  54
  55         for (dir=smbw_dirs;dir;dir=dir->next) {
  56                 if (dir == d) return 1;
  57         }
  58         return 0;
  59 }
  60
  61 /*****************************************************
  62 free a smbw_dir structure and all entries
  63 *******************************************************/
  64 static void free_dir(struct smbw_dir *dir)
  65 {
  66         if (dir->list) {
  67                 free(dir->list);
  68         }
  69         if (dir->path) free(dir->path);
  70         ZERO_STRUCTP(dir);
  71         free(dir);
  72 }
  73
  74
  75 static struct smbw_dir *cur_dir;
  76
  77 /*****************************************************
  78 add a entry to a directory listing
  79 *******************************************************/
  80 static void smbw_dir_add(struct file_info *finfo, const char *mask, void *state)
  81 {
  82         DEBUG(5,("%s\n", finfo->name));
  83
  84         if (cur_dir->malloced == cur_dir->count) {
  85                 cur_dir->list = (struct file_info *)Realloc(cur_dir->list,
  86                                                             sizeof(cur_dir->list[0])*
  87                                                             (cur_dir->count+100));
  88                 if (!cur_dir->list) {
  89                         /* oops */
  90                         return;
  91                 }
  92                 cur_dir->malloced += 100;
  93         }
  94
  95         cur_dir->list[cur_dir->count] = *finfo;
  96         cur_dir->count++;
  97 }
  98
  99 /*****************************************************
 100 add a entry to a directory listing
 101 *******************************************************/
 102 static void smbw_share_add(const char *share, uint32 type,
 103                            const char *comment, void *state)
 104 {
 105         struct file_info finfo;
 106
 107         if (strcmp(share,"IPC$") == 0) return;
 108
 109         ZERO_STRUCT(finfo);
 110
 111         pstrcpy(finfo.name, share);
 112         finfo.mode = aRONLY | aDIR;
 113
 114         smbw_dir_add(&finfo, NULL, NULL);
 115 }
 116
 117
 118 /*****************************************************
 119 add a server to a directory listing
 120 *******************************************************/
 121 static void smbw_server_add(const char *name, uint32 type,
 122                             const char *comment, void *state)
 123 {
 124         struct file_info finfo;
 125
 126         ZERO_STRUCT(finfo);
 127
 128         pstrcpy(finfo.name, name);
 129         finfo.mode = aRONLY | aDIR;
 130
 131         smbw_dir_add(&finfo, NULL, NULL);
 132 }
 133
 134
 135 /*****************************************************
 136 add a entry to a directory listing
 137 *******************************************************/
 138 static void smbw_printjob_add(struct print_job_info *job)
 139 {
 140         struct file_info finfo;
 141
 142         ZERO_STRUCT(finfo);
 143
 144         pstrcpy(finfo.name, job->name);
 145         finfo.mode = aRONLY | aDIR;
 146         finfo.mtime = job->t;
 147         finfo.atime = job->t;
 148         finfo.ctime = job->t;
 149         finfo.uid = nametouid(job->user);
 150         finfo.mode = aRONLY;
 151         finfo.size = job->size;
 152
 153         smbw_dir_add(&finfo, NULL, NULL);
 154 }
 155
 156
 157 /*****************************************************
 158 open a directory on the server
 159 *******************************************************/
 160 int smbw_dir_open(const char *fname)
 161 {
 162         fstring server, share;
 163         pstring path;
 164         struct smbw_server *srv=NULL;
 165         struct smbw_dir *dir=NULL;
 166         pstring mask;
 167         int fd;
 168         char *s, *p;
 169
 170         if (!fname) {
 171                 errno = EINVAL;
 172                 return -1;
 173         }
 174
 175         smbw_init();
 176
 177         /* work out what server they are after */
 178         s = smbw_parse_path(fname, server, share, path);
 179
 180         DEBUG(4,("dir_open share=%s\n", share));
 181
 182         /* get a connection to the server */
 183         srv = smbw_server(server, share);
 184         if (!srv) {
 185                 /* smbw_server sets errno */
 186                 goto failed;
 187         }
 188
 189         dir = (struct smbw_dir *)malloc(sizeof(*dir));
 190         if (!dir) {
 191                 errno = ENOMEM;
 192                 goto failed;
 193         }
 194
 195         ZERO_STRUCTP(dir);
 196
 197         cur_dir = dir;
 198
 199         slprintf(mask, sizeof(mask)-1, "%s\\*", path);
 200         all_string_sub(mask,"\\\\","\\",0);
 201
 202         if ((p=strstr(srv->server_name,"#01"))) {
 203                 *p = 0;
 204                 smbw_server_add(".",0,"",NULL);
 205                 smbw_server_add("..",0,"",NULL);
 206                 cli_NetServerEnum(&srv->cli, srv->server_name, SV_TYPE_DOMAIN_ENUM,
 207                                   smbw_server_add,NULL);
 208                 *p = '#';
 209         } else if ((p=strstr(srv->server_name,"#1D"))) {
 210                 DEBUG(4,("doing NetServerEnum\n"));
 211                 *p = 0;
 212                 smbw_server_add(".",0,"",NULL);
 213                 smbw_server_add("..",0,"",NULL);
 214                 cli_NetServerEnum(&srv->cli, srv->server_name, SV_TYPE_ALL,
 215                                   smbw_server_add,NULL);
 216                 *p = '#';
 217         } else if (strcmp(srv->cli.dev,"IPC") == 0) {
 218                 DEBUG(4,("doing NetShareEnum\n"));
 219                 smbw_share_add(".",0,"",NULL);
 220                 smbw_share_add("..",0,"",NULL);
 221                 if (cli_RNetShareEnum(&srv->cli, smbw_share_add,NULL) < 0) {
 222                         errno = smbw_errno(&srv->cli);
 223                         goto failed;
 224                 }
 225         } else if (strncmp(srv->cli.dev,"LPT",3) == 0) {
 226                 smbw_share_add(".",0,"",NULL);
 227                 smbw_share_add("..",0,"",NULL);
 228                 if (cli_print_queue(&srv->cli, smbw_printjob_add) < 0) {
 229                         errno = smbw_errno(&srv->cli);
 230                         goto failed;
 231                 }
 232         } else {
 233 #if 0
 234                 if (strcmp(path,"\\") == 0) {
 235                         smbw_share_add(".",0,"",NULL);
 236                         smbw_share_add("..",0,"",NULL);
 237                 }
 238 #endif
 239                 if (cli_list(&srv->cli, mask, aHIDDEN|aSYSTEM|aDIR, smbw_dir_add,NULL) < 0) {
 240                         errno = smbw_errno(&srv->cli);
 241                         goto failed;
 242                 }
 243         }
 244
 245         cur_dir = NULL;
 246
 247         fd = open(SMBW_DUMMY, O_WRONLY);
 248         if (fd == -1) {
 249                 errno = EMFILE;
 250                 goto failed;
 251         }
 252
 253         if (bitmap_query(smbw_file_bmap, fd)) {
 254                 DEBUG(0,("ERROR: fd used in smbw_dir_open\n"));
 255                 errno = EIO;
 256                 goto failed;
 257         }
 258
 259         DLIST_ADD(smbw_dirs, dir);
 260
 261         bitmap_set(smbw_file_bmap, fd);
 262
 263         dir->fd = fd;
 264         dir->srv = srv;
 265         dir->path = strdup(s);
 266
 267         DEBUG(4,("  -> %d\n", dir->count));
 268
 269         return dir->fd;
 270
 271  failed:
 272         if (dir) {
 273                 free_dir(dir);
 274         }
 275
 276         return -1;
 277 }
 278
 279 /*****************************************************
 280 a wrapper for fstat() on a directory
 281 *******************************************************/
 282 int smbw_dir_fstat(int fd, struct stat *st)
 283 {
 284         struct smbw_dir *dir;
 285
 286         dir = smbw_dir(fd);
 287         if (!dir) {
 288                 errno = EBADF;
 289                 return -1;
 290         }
 291
 292         ZERO_STRUCTP(st);
 293
 294         smbw_setup_stat(st, "", dir->count*DIRP_SIZE, aDIR);
 295
 296         st->st_dev = dir->srv->dev;
 297
 298         return 0;
 299 }
 300
 301 /*****************************************************
 302 close a directory handle
 303 *******************************************************/
 304 int smbw_dir_close(int fd)
 305 {
 306         struct smbw_dir *dir;
 307
 308         dir = smbw_dir(fd);
 309         if (!dir) {
 310                 errno = EBADF;
 311                 return -1;
 312         }
 313
 314         bitmap_clear(smbw_file_bmap, dir->fd);
 315         close(dir->fd);
 316
 317         DLIST_REMOVE(smbw_dirs, dir);
 318
 319         free_dir(dir);
 320
 321         return 0;
 322 }
 323
 324 /*****************************************************
 325 a wrapper for getdents()
 326 *******************************************************/
 327 int smbw_getdents(unsigned int fd, struct dirent *dirp, int count)
 328 {
 329         struct smbw_dir *dir;
 330         int n=0;
 331
 332         smbw_busy++;
 333
 334         dir = smbw_dir(fd);
 335         if (!dir) {
 336                 errno = EBADF;
 337                 smbw_busy--;
 338                 return -1;
 339         }
 340
 341         while (count>=DIRP_SIZE && (dir->offset < dir->count)) {
 342 #if HAVE_DIRENT_D_OFF
 343                 dirp->d_off = (dir->offset+1)*DIRP_SIZE;
 344 #endif
 345                 dirp->d_reclen = DIRP_SIZE;
 346                 fstrcpy(&dirp->d_name[0], dir->list[dir->offset].name);
 347                 dirp->d_ino = smbw_inode(dir->list[dir->offset].name);
 348                 dir->offset++;
 349                 count -= dirp->d_reclen;
 350 #if HAVE_DIRENT_D_OFF
 351                 if (dir->offset == dir->count) {
 352                         dirp->d_off = -1;
 353                 }
 354 #endif
 355                 dirp = (struct dirent *)(((char *)dirp) + DIRP_SIZE);
 356                 n++;
 357         }
 358
 359         smbw_busy--;
 360         return n*DIRP_SIZE;
 361 }
 362
 363
 364 /*****************************************************
 365 a wrapper for chdir()
 366 *******************************************************/
 367 int smbw_chdir(const char *name)
 368 {
 369         struct smbw_server *srv;
 370         fstring server, share;
 371         pstring path;
 372         uint16 mode = aDIR;
 373         char *cwd;
 374         int len;
 375
 376         smbw_init();
 377
 378         len = strlen(smbw_prefix);
 379
 380         if (smbw_busy) return real_chdir(name);
 381
 382         smbw_busy++;
 383
 384         if (!name) {
 385                 errno = EINVAL;
 386                 goto failed;
 387         }
 388
 389         DEBUG(4,("smbw_chdir(%s)\n", name));
 390
 391         /* work out what server they are after */
 392         cwd = smbw_parse_path(name, server, share, path);
 393
 394         /* a special case - accept cd to /smb */
 395         if (strncmp(cwd, smbw_prefix, len-1) == 0 &&
 396             cwd[len-1] == 0) {
 397                 goto success1;
 398         }
 399
 400         if (strncmp(cwd,smbw_prefix,strlen(smbw_prefix))) {
 401                 if (real_chdir(cwd) == 0) {
 402                         goto success2;
 403                 }
 404                 goto failed;
 405         }
 406
 407         /* get a connection to the server */
 408         srv = smbw_server(server, share);
 409         if (!srv) {
 410                 /* smbw_server sets errno */
 411                 goto failed;
 412         }
 413
 414         if (strncmp(srv->cli.dev,"IPC",3) &&
 415             strncmp(srv->cli.dev,"LPT",3) &&
 416             !smbw_getatr(srv, path,
 417                          &mode, NULL, NULL, NULL, NULL, NULL)) {
 418                 errno = smbw_errno(&srv->cli);
 419                 goto failed;
 420         }
 421
 422         if (!(mode & aDIR)) {
 423                 errno = ENOTDIR;
 424                 goto failed;
 425         }
 426
 427  success1:
 428         /* we don't want the old directory to be busy */
 429         real_chdir("/");
 430
 431  success2:
 432
 433         DEBUG(4,("set SMBW_CWD to %s\n", cwd));
 434
 435         pstrcpy(smbw_cwd, cwd);
 436
 437         smbw_busy--;
 438         return 0;
 439
 440  failed:
 441         smbw_busy--;
 442         return -1;
 443 }
 444
 445
 446 /*****************************************************
 447 a wrapper for lseek() on directories
 448 *******************************************************/
 449 off_t smbw_dir_lseek(int fd, off_t offset, int whence)
 450 {
 451         struct smbw_dir *dir;
 452         off_t ret;
 453
 454         dir = smbw_dir(fd);
 455         if (!dir) {
 456                 errno = EBADF;
 457                 return -1;
 458         }
 459
 460         switch (whence) {
 461         case SEEK_SET:
 462                 dir->offset = offset/DIRP_SIZE;
 463                 break;
 464         case SEEK_CUR:
 465                 dir->offset += offset/DIRP_SIZE;
 466                 break;
 467         case SEEK_END:
 468                 dir->offset = (dir->count * DIRP_SIZE) + offset;
 469                 dir->offset /= DIRP_SIZE;
 470                 break;
 471         }
 472
 473         ret = dir->offset * DIRP_SIZE;
 474
 475         DEBUG(4,("   -> %d\n", (int)ret));
 476
 477         return ret;
 478 }
 479
 480
 481 /*****************************************************
 482 a wrapper for mkdir()
 483 *******************************************************/
 484 int smbw_mkdir(const char *fname, mode_t mode)
 485 {
 486         struct smbw_server *srv;
 487         fstring server, share;
 488         pstring path;
 489
 490         if (!fname) {
 491                 errno = EINVAL;
 492                 return -1;
 493         }
 494
 495         smbw_init();
 496
 497         smbw_busy++;
 498
 499         /* work out what server they are after */
 500         smbw_parse_path(fname, server, share, path);
 501
 502         /* get a connection to the server */
 503         srv = smbw_server(server, share);
 504         if (!srv) {
 505                 /* smbw_server sets errno */
 506                 goto failed;
 507         }
 508
 509         if (!cli_mkdir(&srv->cli, path)) {
 510                 errno = smbw_errno(&srv->cli);
 511                 goto failed;
 512         }
 513
 514         smbw_busy--;
 515         return 0;
 516
 517  failed:
 518         smbw_busy--;
 519         return -1;
 520 }
 521
 522 /*****************************************************
 523 a wrapper for rmdir()
 524 *******************************************************/
 525 int smbw_rmdir(const char *fname)
 526 {
 527         struct smbw_server *srv;
 528         fstring server, share;
 529         pstring path;
 530
 531         if (!fname) {
 532                 errno = EINVAL;
 533                 return -1;
 534         }
 535
 536         smbw_init();
 537
 538         smbw_busy++;
 539
 540         /* work out what server they are after */
 541         smbw_parse_path(fname, server, share, path);
 542
 543         /* get a connection to the server */
 544         srv = smbw_server(server, share);
 545         if (!srv) {
 546                 /* smbw_server sets errno */
 547                 goto failed;
 548         }
 549
 550         if (!cli_rmdir(&srv->cli, path)) {
 551                 errno = smbw_errno(&srv->cli);
 552                 goto failed;
 553         }
 554
 555         smbw_busy--;
 556         return 0;
 557
 558  failed:
 559         smbw_busy--;
 560         return -1;
 561 }
 562
 563
 564 /*****************************************************
 565 a wrapper for getcwd()
 566 *******************************************************/
 567 char *smbw_getcwd(char *buf, size_t size)
 568 {
 569         smbw_init();
 570
 571         if (smbw_busy) {
 572                 return (char *)real_getcwd(buf, size);
 573         }
 574
 575         smbw_busy++;
 576
 577         if (!buf) {
 578                 if (size <= 0) size = strlen(smbw_cwd)+1;
 579                 buf = (char *)malloc(size);
 580                 if (!buf) {
 581                         errno = ENOMEM;
 582                         smbw_busy--;
 583                         return NULL;
 584                 }
 585         }
 586
 587         if (strlen(smbw_cwd) > size-1) {
 588                 errno = ERANGE;
 589                 smbw_busy--;
 590                 return NULL;
 591         }
 592
 593         safe_strcpy(buf, smbw_cwd, size);
 594
 595         smbw_busy--;
 596         return buf;
 597 }
 598
 599 /*****************************************************
 600 a wrapper for fchdir()
 601 *******************************************************/
 602 int smbw_fchdir(unsigned int fd)
 603 {
 604         struct smbw_dir *dir;
 605         int ret;
 606
 607         smbw_busy++;
 608
 609         dir = smbw_dir(fd);
 610         if (dir) {
 611                 smbw_busy--;
 612                 return chdir(dir->path);
 613         }
 614
 615         ret = real_fchdir(fd);
 616         if (ret == 0) {
 617                 sys_getwd(smbw_cwd);
 618         }
 619
 620         smbw_busy--;
 621         return ret;
 622 }
 623
 624 /*****************************************************
 625 open a directory on the server
 626 *******************************************************/
 627 DIR *smbw_opendir(const char *fname)
 628 {
 629         int fd;
 630
 631         smbw_busy++;
 632
 633         fd = smbw_dir_open(fname);
 634
 635         if (fd == -1) {
 636                 smbw_busy--;
 637                 return NULL;
 638         }
 639
 640         smbw_busy--;
 641
 642         return (DIR *)smbw_dir(fd);
 643 }
 644
 645 /*****************************************************
 646 read one entry from a directory
 647 *******************************************************/
 648 struct dirent *smbw_readdir(DIR *dirp)
 649 {
 650         struct smbw_dir *d = (struct smbw_dir *)dirp;
 651         static union {
 652                 char buf[DIRP_SIZE];
 653                 struct dirent de;
 654         } dbuf;
 655
 656         if (smbw_getdents(d->fd, &dbuf.de, DIRP_SIZE) > 0)
 657                 return &dbuf.de;
 658
 659         return NULL;
 660 }
 661
 662 /*****************************************************
 663 close a DIR*
 664 *******************************************************/
 665 int smbw_closedir(DIR *dirp)
 666 {
 667         struct smbw_dir *d = (struct smbw_dir *)dirp;
 668         return smbw_close(d->fd);
 669 }
 670
 671 /*****************************************************
 672 seek in a directory
 673 *******************************************************/
 674 void smbw_seekdir(DIR *dirp, off_t offset)
 675 {
 676         struct smbw_dir *d = (struct smbw_dir *)dirp;
 677         smbw_dir_lseek(d->fd,offset, SEEK_SET);
 678 }
 679
 680 /*****************************************************
 681 current loc in a directory
 682 *******************************************************/
 683 off_t smbw_telldir(DIR *dirp)
 684 {
 685         struct smbw_dir *d = (struct smbw_dir *)dirp;
 686         return smbw_dir_lseek(d->fd,0,SEEK_CUR);
 687 }
 688