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 extern int DEBUGLEVEL;
  32
  33 extern int smbw_busy;
  34
  35 /*****************************************************
  36 map a fd to a smbw_dir structure
  37 *******************************************************/
  38 struct smbw_dir *smbw_dir(int fd)
  39 {
  40         struct smbw_dir *dir;
  41
  42         for (dir=smbw_dirs;dir;dir=dir->next) {
  43                 if (dir->fd == fd) return dir;
  44         }
  45         return NULL;
  46 }
  47
  48 /*****************************************************
  49 check if a DIR* is one of ours
  50 *******************************************************/
  51 int smbw_dirp(DIR *dirp)
  52 {
  53         struct smbw_dir *d = (struct smbw_dir *)dirp;
  54         struct smbw_dir *dir;
  55
  56         for (dir=smbw_dirs;dir;dir=dir->next) {
  57                 if (dir == d) return 1;
  58         }
  59         return 0;
  60 }
  61
  62 /*****************************************************
  63 free a smbw_dir structure and all entries
  64 *******************************************************/
  65 static void free_dir(struct smbw_dir *dir)
  66 {
  67         if (dir->list) {
  68                 free(dir->list);
  69         }
  70         if (dir->path) free(dir->path);
  71         ZERO_STRUCTP(dir);
  72         free(dir);
  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,
  81                          void *state)
  82 {
  83         DEBUG(5,("%s\n", finfo->name));
  84
  85         if (cur_dir->malloced == cur_dir->count) {
  86                 cur_dir->list = (struct file_info *)Realloc(cur_dir->list,
  87                                                             sizeof(cur_dir->list[0])*
  88                                                             (cur_dir->count+100));
  89                 if (!cur_dir->list) {
  90                         /* oops */
  91                         return;
  92                 }
  93                 cur_dir->malloced += 100;
  94         }
  95
  96         cur_dir->list[cur_dir->count] = *finfo;
  97         cur_dir->count++;
  98 }
  99
 100 /*****************************************************
 101 add a entry to a directory listing
 102 *******************************************************/
 103 static void smbw_share_add(const char *share, uint32 type,
 104                            const char *comment, void *state)
 105 {
 106         struct file_info finfo;
 107
 108         if (strcmp(share,"IPC$") == 0) return;
 109
 110         ZERO_STRUCT(finfo);
 111
 112         pstrcpy(finfo.name, share);
 113         finfo.mode = aRONLY | aDIR;
 114
 115         smbw_dir_add(&finfo, NULL, NULL);
 116 }
 117
 118
 119 /*****************************************************
 120 add a server to a directory listing
 121 *******************************************************/
 122 static void smbw_server_add(const char *name, uint32 type,
 123                             const char *comment, void *state)
 124 {
 125         struct file_info finfo;
 126
 127         ZERO_STRUCT(finfo);
 128
 129         pstrcpy(finfo.name, name);
 130         finfo.mode = aRONLY | aDIR;
 131
 132         smbw_dir_add(&finfo, NULL, NULL);
 133 }
 134
 135
 136 /*****************************************************
 137 add a entry to a directory listing
 138 *******************************************************/
 139 static void smbw_printjob_add(struct print_job_info *job)
 140 {
 141         struct file_info finfo;
 142
 143         ZERO_STRUCT(finfo);
 144
 145         pstrcpy(finfo.name, job->name);
 146         finfo.mode = aRONLY | aDIR;
 147         finfo.mtime = job->t;
 148         finfo.atime = job->t;
 149         finfo.ctime = job->t;
 150         finfo.uid = nametouid(job->user);
 151         finfo.mode = aRONLY;
 152         finfo.size = job->size;
 153
 154         smbw_dir_add(&finfo, NULL, NULL);
 155 }
 156
 157
 158 /*****************************************************
 159 open a directory on the server
 160 *******************************************************/
 161 int smbw_dir_open(const char *fname)
 162 {
 163         fstring server, share;
 164         pstring path;
 165         struct smbw_server *srv=NULL;
 166         struct smbw_dir *dir=NULL;
 167         pstring mask;
 168         int fd;
 169         char *s, *p;
 170
 171         if (!fname) {
 172                 errno = EINVAL;
 173                 return -1;
 174         }
 175
 176         smbw_init();
 177
 178         /* work out what server they are after */
 179         s = smbw_parse_path(fname, server, share, path);
 180
 181         DEBUG(4,("dir_open share=%s\n", share));
 182
 183         /* get a connection to the server */
 184         srv = smbw_server(server, share);
 185         if (!srv) {
 186                 /* smbw_server sets errno */
 187                 goto failed;
 188         }
 189
 190         dir = (struct smbw_dir *)malloc(sizeof(*dir));
 191         if (!dir) {
 192                 errno = ENOMEM;
 193                 goto failed;
 194         }
 195
 196         ZERO_STRUCTP(dir);
 197
 198         cur_dir = dir;
 199
 200         slprintf(mask, sizeof(mask)-1, "%s\\*", path);
 201         all_string_sub(mask,"\\\\","\\",0);
 202
 203         if ((p=strstr(srv->server_name,"#01"))) {
 204                 *p = 0;
 205                 smbw_server_add(".",0,"", NULL);
 206                 smbw_server_add("..",0,"", NULL);
 207                 smbw_NetServerEnum(&srv->cli, srv->server_name,
 208                                    SV_TYPE_DOMAIN_ENUM, smbw_server_add, NULL);
 209                 *p = '#';
 210         } else if ((p=strstr(srv->server_name,"#1D"))) {
 211                 DEBUG(4,("doing NetServerEnum\n"));
 212                 *p = 0;
 213                 smbw_server_add(".",0,"", NULL);
 214                 smbw_server_add("..",0,"", NULL);
 215                 smbw_NetServerEnum(&srv->cli, srv->server_name, SV_TYPE_ALL,
 216                                    smbw_server_add, NULL);
 217                 *p = '#';
 218         } else if (strcmp(srv->cli.dev,"IPC") == 0) {
 219                 DEBUG(4,("doing NetShareEnum\n"));
 220                 smbw_share_add(".",0,"", NULL);
 221                 smbw_share_add("..",0,"", NULL);
 222                 if (smbw_RNetShareEnum(&srv->cli, smbw_share_add, NULL) < 0) {
 223                         errno = smbw_errno(&srv->cli);
 224                         goto failed;
 225                 }
 226         } else if (strncmp(srv->cli.dev,"LPT",3) == 0) {
 227                 smbw_share_add(".",0,"", NULL);
 228                 smbw_share_add("..",0,"", NULL);
 229                 if (cli_print_queue(&srv->cli, smbw_printjob_add) < 0) {
 230                         errno = smbw_errno(&srv->cli);
 231                         goto failed;
 232                 }
 233         } else {
 234 #if 0
 235                 if (strcmp(path,"\\") == 0) {
 236                         smbw_share_add(".",0,"");
 237                         smbw_share_add("..",0,"");
 238                 }
 239 #endif
 240                 if (cli_list(&srv->cli, mask, aHIDDEN|aSYSTEM|aDIR,
 241                              smbw_dir_add, NULL) < 0) {
 242                         errno = smbw_errno(&srv->cli);
 243                         goto failed;
 244                 }
 245         }
 246
 247         cur_dir = NULL;
 248
 249         fd = open(SMBW_DUMMY, O_WRONLY);
 250         if (fd == -1) {
 251                 errno = EMFILE;
 252                 goto failed;
 253         }
 254
 255         if (bitmap_query(smbw_file_bmap, fd)) {
 256                 DEBUG(0,("ERROR: fd used in smbw_dir_open\n"));
 257                 errno = EIO;
 258                 goto failed;
 259         }
 260
 261         DLIST_ADD(smbw_dirs, dir);
 262
 263         bitmap_set(smbw_file_bmap, fd);
 264
 265         dir->fd = fd;
 266         dir->srv = srv;
 267         dir->path = strdup(s);
 268
 269         DEBUG(4,("  -> %d\n", dir->count));
 270
 271         return dir->fd;
 272
 273  failed:
 274         if (dir) {
 275                 free_dir(dir);
 276         }
 277
 278         return -1;
 279 }
 280
 281 /*****************************************************
 282 a wrapper for fstat() on a directory
 283 *******************************************************/
 284 int smbw_dir_fstat(int fd, struct stat *st)
 285 {
 286         struct smbw_dir *dir;
 287
 288         dir = smbw_dir(fd);
 289         if (!dir) {
 290                 errno = EBADF;
 291                 return -1;
 292         }
 293
 294         ZERO_STRUCTP(st);
 295
 296         smbw_setup_stat(st, "", dir->count*DIRP_SIZE, aDIR);
 297
 298         st->st_dev = dir->srv->dev;
 299
 300         return 0;
 301 }
 302
 303 /*****************************************************
 304 close a directory handle
 305 *******************************************************/
 306 int smbw_dir_close(int fd)
 307 {
 308         struct smbw_dir *dir;
 309
 310         dir = smbw_dir(fd);
 311         if (!dir) {
 312                 errno = EBADF;
 313                 return -1;
 314         }
 315
 316         bitmap_clear(smbw_file_bmap, dir->fd);
 317         close(dir->fd);
 318
 319         DLIST_REMOVE(smbw_dirs, dir);
 320
 321         free_dir(dir);
 322
 323         return 0;
 324 }
 325
 326 /*****************************************************
 327 a wrapper for getdents()
 328 *******************************************************/
 329 int smbw_getdents(unsigned int fd, struct dirent *dirp, int count)
 330 {
 331         struct smbw_dir *dir;
 332         int n=0;
 333
 334         smbw_busy++;
 335
 336         dir = smbw_dir(fd);
 337         if (!dir) {
 338                 errno = EBADF;
 339                 smbw_busy--;
 340                 return -1;
 341         }
 342
 343         while (count>=DIRP_SIZE && (dir->offset < dir->count)) {
 344 #if HAVE_DIRENT_D_OFF
 345                 dirp->d_off = (dir->offset+1)*DIRP_SIZE;
 346 #endif
 347                 dirp->d_reclen = DIRP_SIZE;
 348                 fstrcpy(&dirp->d_name[0], dir->list[dir->offset].name);
 349                 dirp->d_ino = smbw_inode(dir->list[dir->offset].name);
 350                 dir->offset++;
 351                 count -= dirp->d_reclen;
 352 #if HAVE_DIRENT_D_OFF
 353                 if (dir->offset == dir->count) {
 354                         dirp->d_off = -1;
 355                 }
 356 #endif
 357                 dirp = (struct dirent *)(((char *)dirp) + DIRP_SIZE);
 358                 n++;
 359         }
 360
 361         smbw_busy--;
 362         return n*DIRP_SIZE;
 363 }
 364
 365
 366 /*****************************************************
 367 a wrapper for chdir()
 368 *******************************************************/
 369 int smbw_chdir(const char *name)
 370 {
 371         struct smbw_server *srv;
 372         fstring server, share;
 373         pstring path;
 374         uint16 mode = aDIR;
 375         char *cwd;
 376         int len;
 377
 378         smbw_init();
 379
 380         len = strlen(smbw_prefix);
 381
 382         if (smbw_busy) return real_chdir(name);
 383
 384         smbw_busy++;
 385
 386         if (!name) {
 387                 errno = EINVAL;
 388                 goto failed;
 389         }
 390
 391         DEBUG(4,("smbw_chdir(%s)\n", name));
 392
 393         /* work out what server they are after */
 394         cwd = smbw_parse_path(name, server, share, path);
 395
 396         /* a special case - accept cd to /smb */
 397         if (strncmp(cwd, smbw_prefix, len-1) == 0 &&
 398             cwd[len-1] == 0) {
 399                 goto success1;
 400         }
 401
 402         if (strncmp(cwd,smbw_prefix,strlen(smbw_prefix))) {
 403                 if (real_chdir(cwd) == 0) {
 404                         goto success2;
 405                 }
 406                 goto failed;
 407         }
 408
 409         /* get a connection to the server */
 410         srv = smbw_server(server, share);
 411         if (!srv) {
 412                 /* smbw_server sets errno */
 413                 goto failed;
 414         }
 415
 416         if (strncmp(srv->cli.dev,"IPC",3) &&
 417             strncmp(srv->cli.dev,"LPT",3) &&
 418             !smbw_getatr(srv, path,
 419                          &mode, NULL, NULL, NULL, NULL, NULL)) {
 420                 errno = smbw_errno(&srv->cli);
 421                 goto failed;
 422         }
 423
 424         if (!(mode & aDIR)) {
 425                 errno = ENOTDIR;
 426                 goto failed;
 427         }
 428
 429  success1:
 430         /* we don't want the old directory to be busy */
 431         real_chdir("/");
 432
 433  success2:
 434
 435         DEBUG(4,("set SMBW_CWD to %s\n", cwd));
 436
 437         pstrcpy(smbw_cwd, cwd);
 438
 439         smbw_busy--;
 440         return 0;
 441
 442  failed:
 443         smbw_busy--;
 444         return -1;
 445 }
 446
 447
 448 /*****************************************************
 449 a wrapper for lseek() on directories
 450 *******************************************************/
 451 off_t smbw_dir_lseek(int fd, off_t offset, int whence)
 452 {
 453         struct smbw_dir *dir;
 454         off_t ret;
 455
 456         dir = smbw_dir(fd);
 457         if (!dir) {
 458                 errno = EBADF;
 459                 return -1;
 460         }
 461
 462         switch (whence) {
 463         case SEEK_SET:
 464                 dir->offset = offset/DIRP_SIZE;
 465                 break;
 466         case SEEK_CUR:
 467                 dir->offset += offset/DIRP_SIZE;
 468                 break;
 469         case SEEK_END:
 470                 dir->offset = (dir->count * DIRP_SIZE) + offset;
 471                 dir->offset /= DIRP_SIZE;
 472                 break;
 473         }
 474
 475         ret = dir->offset * DIRP_SIZE;
 476
 477         DEBUG(4,("   -> %d\n", (int)ret));
 478
 479         return ret;
 480 }
 481
 482
 483 /*****************************************************
 484 a wrapper for mkdir()
 485 *******************************************************/
 486 int smbw_mkdir(const char *fname, mode_t mode)
 487 {
 488         struct smbw_server *srv;
 489         fstring server, share;
 490         pstring path;
 491
 492         if (!fname) {
 493                 errno = EINVAL;
 494                 return -1;
 495         }
 496
 497         smbw_init();
 498
 499         smbw_busy++;
 500
 501         /* work out what server they are after */
 502         smbw_parse_path(fname, server, share, path);
 503
 504         /* get a connection to the server */
 505         srv = smbw_server(server, share);
 506         if (!srv) {
 507                 /* smbw_server sets errno */
 508                 goto failed;
 509         }
 510
 511         if (!cli_mkdir(&srv->cli, path)) {
 512                 errno = smbw_errno(&srv->cli);
 513                 goto failed;
 514         }
 515
 516         smbw_busy--;
 517         return 0;
 518
 519  failed:
 520         smbw_busy--;
 521         return -1;
 522 }
 523
 524 /*****************************************************
 525 a wrapper for rmdir()
 526 *******************************************************/
 527 int smbw_rmdir(const char *fname)
 528 {
 529         struct smbw_server *srv;
 530         fstring server, share;
 531         pstring path;
 532
 533         if (!fname) {
 534                 errno = EINVAL;
 535                 return -1;
 536         }
 537
 538         smbw_init();
 539
 540         smbw_busy++;
 541
 542         /* work out what server they are after */
 543         smbw_parse_path(fname, server, share, path);
 544
 545         /* get a connection to the server */
 546         srv = smbw_server(server, share);
 547         if (!srv) {
 548                 /* smbw_server sets errno */
 549                 goto failed;
 550         }
 551
 552         if (!cli_rmdir(&srv->cli, path)) {
 553                 errno = smbw_errno(&srv->cli);
 554                 goto failed;
 555         }
 556
 557         smbw_busy--;
 558         return 0;
 559
 560  failed:
 561         smbw_busy--;
 562         return -1;
 563 }
 564
 565
 566 /*****************************************************
 567 a wrapper for getcwd()
 568 *******************************************************/
 569 char *smbw_getcwd(char *buf, size_t size)
 570 {
 571         smbw_init();
 572
 573         if (smbw_busy) {
 574                 return (char *)real_getcwd(buf, size);
 575         }
 576
 577         smbw_busy++;
 578
 579         if (!buf) {
 580                 if (size <= 0) size = strlen(smbw_cwd)+1;
 581                 buf = (char *)malloc(size);
 582                 if (!buf) {
 583                         errno = ENOMEM;
 584                         smbw_busy--;
 585                         return NULL;
 586                 }
 587         }
 588
 589         if (strlen(smbw_cwd) > size-1) {
 590                 errno = ERANGE;
 591                 smbw_busy--;
 592                 return NULL;
 593         }
 594
 595         safe_strcpy(buf, smbw_cwd, size);
 596
 597         smbw_busy--;
 598         return buf;
 599 }
 600
 601 /*****************************************************
 602 a wrapper for fchdir()
 603 *******************************************************/
 604 int smbw_fchdir(unsigned int fd)
 605 {
 606         struct smbw_dir *dir;
 607         int ret;
 608
 609         smbw_busy++;
 610
 611         dir = smbw_dir(fd);
 612         if (dir) {
 613                 smbw_busy--;
 614                 return chdir(dir->path);
 615         }
 616
 617         ret = real_fchdir(fd);
 618         if (ret == 0) {
 619                 sys_getwd(smbw_cwd);
 620         }
 621
 622         smbw_busy--;
 623         return ret;
 624 }
 625
 626 /*****************************************************
 627 open a directory on the server
 628 *******************************************************/
 629 DIR *smbw_opendir(const char *fname)
 630 {
 631         int fd;
 632
 633         smbw_busy++;
 634
 635         fd = smbw_dir_open(fname);
 636
 637         if (fd == -1) {
 638                 smbw_busy--;
 639                 return NULL;
 640         }
 641
 642         smbw_busy--;
 643
 644         return (DIR *)smbw_dir(fd);
 645 }
 646
 647 /*****************************************************
 648 read one entry from a directory
 649 *******************************************************/
 650 struct dirent *smbw_readdir(DIR *dirp)
 651 {
 652         struct smbw_dir *d = (struct smbw_dir *)dirp;
 653         static union {
 654                 char buf[DIRP_SIZE];
 655                 struct dirent de;
 656         } dbuf;
 657
 658         if (smbw_getdents(d->fd, &dbuf.de, DIRP_SIZE) > 0)
 659                 return &dbuf.de;
 660
 661         return NULL;
 662 }
 663
 664 /*****************************************************
 665 close a DIR*
 666 *******************************************************/
 667 int smbw_closedir(DIR *dirp)
 668 {
 669         struct smbw_dir *d = (struct smbw_dir *)dirp;
 670         return smbw_close(d->fd);
 671 }
 672
 673 /*****************************************************
 674 seek in a directory
 675 *******************************************************/
 676 void smbw_seekdir(DIR *dirp, off_t offset)
 677 {
 678         struct smbw_dir *d = (struct smbw_dir *)dirp;
 679         smbw_dir_lseek(d->fd,offset, SEEK_SET);
 680 }
 681
 682 /*****************************************************
 683 current loc in a directory
 684 *******************************************************/
 685 off_t smbw_telldir(DIR *dirp)
 686 {
 687         struct smbw_dir *d = (struct smbw_dir *)dirp;
 688         return smbw_dir_lseek(d->fd,0,SEEK_CUR);
 689 }
 690