source/libsmb/clierror.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client error handling routines
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) Jelmer Vernooij 2003
   6    Copyright (C) Jeremy Allison 2006
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23
  24 /*****************************************************
  25  RAP error codes - a small start but will be extended.
  26
  27  XXX: Perhaps these should move into a common function because they're
  28  duplicated in clirap2.c
  29
  30 *******************************************************/
  31
  32 static const struct {
  33         int err;
  34         const char *message;
  35 } rap_errmap[] = {
  36         {5,    "RAP5: User has insufficient privilege" },
  37         {50,   "RAP50: Not supported by server" },
  38         {65,   "RAP65: Access denied" },
  39         {86,   "RAP86: The specified password is invalid" },
  40         {2220, "RAP2220: Group does not exist" },
  41         {2221, "RAP2221: User does not exist" },
  42         {2226, "RAP2226: Operation only permitted on a Primary Domain Controller"  },
  43         {2237, "RAP2237: User is not in group" },
  44         {2242, "RAP2242: The password of this user has expired." },
  45         {2243, "RAP2243: The password of this user cannot change." },
  46         {2244, "RAP2244: This password cannot be used now (password history conflict)." },
  47         {2245, "RAP2245: The password is shorter than required." },
  48         {2246, "RAP2246: The password of this user is too recent to change."},
  49
  50         /* these really shouldn't be here ... */
  51         {0x80, "Not listening on called name"},
  52         {0x81, "Not listening for calling name"},
  53         {0x82, "Called name not present"},
  54         {0x83, "Called name present, but insufficient resources"},
  55
  56         {0, NULL}
  57 };
  58
  59 /****************************************************************************
  60  Return a description of an SMB error.
  61 ****************************************************************************/
  62
  63 static const char *cli_smb_errstr(struct cli_state *cli)
  64 {
  65         return smb_dos_errstr(cli->inbuf);
  66 }
  67
  68 /****************************************************************************
  69  Convert a socket error into an NTSTATUS.
  70 ****************************************************************************/
  71
  72 static NTSTATUS cli_smb_rw_error_to_ntstatus(struct cli_state *cli)
  73 {
  74         switch(cli->smb_rw_error) {
  75                 case SMB_READ_TIMEOUT:
  76                         return NT_STATUS_IO_TIMEOUT;
  77                 case SMB_READ_EOF:
  78                         return NT_STATUS_END_OF_FILE;
  79                 /* What we shoud really do for read/write errors is convert from errno. */
  80                 /* FIXME. JRA. */
  81                 case SMB_READ_ERROR:
  82                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
  83                 case SMB_WRITE_ERROR:
  84                         return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
  85                 case SMB_READ_BAD_SIG:
  86                         return NT_STATUS_INVALID_PARAMETER;
  87                 case SMB_NO_MEMORY:
  88                         return NT_STATUS_NO_MEMORY;
  89                 default:
  90                         break;
  91         }
  92         return NT_STATUS_UNSUCCESSFUL;
  93 }
  94
  95 /***************************************************************************
  96  Return an error message - either an NT error, SMB error or a RAP error.
  97  Note some of the NT errors are actually warnings or "informational" errors
  98  in which case they can be safely ignored.
  99 ****************************************************************************/
 100
 101 const char *cli_errstr(struct cli_state *cli)
 102 {
 103         fstring cli_error_message;
 104         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
 105         uint8 errclass;
 106         int i;
 107         char *result;
 108
 109         if (!cli->initialised) {
 110                 fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
 111                 goto done;
 112         }
 113
 114         /* Was it server socket error ? */
 115         if (cli->fd == -1 && cli->smb_rw_error) {
 116                 switch(cli->smb_rw_error) {
 117                         case SMB_READ_TIMEOUT:
 118                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 119                                         "Call timed out: server did not respond after %d milliseconds",
 120                                         cli->timeout);
 121                                 break;
 122                         case SMB_READ_EOF:
 123                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 124                                         "Call returned zero bytes (EOF)" );
 125                                 break;
 126                         case SMB_READ_ERROR:
 127                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 128                                         "Read error: %s", strerror(errno) );
 129                                 break;
 130                         case SMB_WRITE_ERROR:
 131                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 132                                         "Write error: %s", strerror(errno) );
 133                                 break;
 134                         case SMB_READ_BAD_SIG:
 135                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 136                                         "Server packet had invalid SMB signature!");
 137                                 break;
 138                         case SMB_NO_MEMORY:
 139                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 140                                         "Out of memory");
 141                                 break;
 142                         default:
 143                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 144                                         "Unknown error code %d\n", cli->smb_rw_error );
 145                                 break;
 146                 }
 147                 goto done;
 148         }
 149
 150         /* Case #1: RAP error */
 151         if (cli->rap_error) {
 152                 for (i = 0; rap_errmap[i].message != NULL; i++) {
 153                         if (rap_errmap[i].err == cli->rap_error) {
 154                                 return rap_errmap[i].message;
 155                         }
 156                 }
 157
 158                 slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
 159                         cli->rap_error);
 160
 161                 goto done;
 162         }
 163
 164         /* Case #2: 32-bit NT errors */
 165         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 166                 NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 167
 168                 return nt_errstr(status);
 169         }
 170
 171         cli_dos_error(cli, &errclass, &errnum);
 172
 173         /* Case #3: SMB error */
 174
 175         return cli_smb_errstr(cli);
 176
 177  done:
 178         result = talloc_strdup(talloc_tos(), cli_error_message);
 179         SMB_ASSERT(result);
 180         return result;
 181 }
 182
 183
 184 /****************************************************************************
 185  Return the 32-bit NT status code from the last packet.
 186 ****************************************************************************/
 187
 188 NTSTATUS cli_nt_error(struct cli_state *cli)
 189 {
 190         int flgs2 = SVAL(cli->inbuf,smb_flg2);
 191
 192         /* Deal with socket errors first. */
 193         if (cli->fd == -1 && cli->smb_rw_error) {
 194                 return cli_smb_rw_error_to_ntstatus(cli);
 195         }
 196
 197         if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
 198                 int e_class  = CVAL(cli->inbuf,smb_rcls);
 199                 int code  = SVAL(cli->inbuf,smb_err);
 200                 return dos_to_ntstatus(e_class, code);
 201         }
 202
 203         return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 204 }
 205
 206
 207 /****************************************************************************
 208  Return the DOS error from the last packet - an error class and an error
 209  code.
 210 ****************************************************************************/
 211
 212 void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
 213 {
 214         int  flgs2;
 215
 216         if(!cli->initialised) {
 217                 return;
 218         }
 219
 220         /* Deal with socket errors first. */
 221         if (cli->fd == -1 && cli->smb_rw_error) {
 222                 NTSTATUS status = cli_smb_rw_error_to_ntstatus(cli);
 223                 ntstatus_to_dos( status, eclass, ecode);
 224                 return;
 225         }
 226
 227         flgs2 = SVAL(cli->inbuf,smb_flg2);
 228
 229         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 230                 NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
 231                 ntstatus_to_dos(ntstatus, eclass, ecode);
 232                 return;
 233         }
 234
 235         *eclass  = CVAL(cli->inbuf,smb_rcls);
 236         *ecode  = SVAL(cli->inbuf,smb_err);
 237 }
 238
 239 /* Return a UNIX errno from a NT status code */
 240 static const struct {
 241         NTSTATUS status;
 242         int error;
 243 } nt_errno_map[] = {
 244         {NT_STATUS_ACCESS_VIOLATION, EACCES},
 245         {NT_STATUS_INVALID_HANDLE, EBADF},
 246         {NT_STATUS_ACCESS_DENIED, EACCES},
 247         {NT_STATUS_OBJECT_NAME_NOT_FOUND, ENOENT},
 248         {NT_STATUS_OBJECT_PATH_NOT_FOUND, ENOENT},
 249         {NT_STATUS_SHARING_VIOLATION, EBUSY},
 250         {NT_STATUS_OBJECT_PATH_INVALID, ENOTDIR},
 251         {NT_STATUS_OBJECT_NAME_COLLISION, EEXIST},
 252         {NT_STATUS_PATH_NOT_COVERED, ENOENT},
 253         {NT_STATUS_UNSUCCESSFUL, EINVAL},
 254         {NT_STATUS_NOT_IMPLEMENTED, ENOSYS},
 255         {NT_STATUS_IN_PAGE_ERROR, EFAULT},
 256         {NT_STATUS_BAD_NETWORK_NAME, ENOENT},
 257 #ifdef EDQUOT
 258         {NT_STATUS_PAGEFILE_QUOTA, EDQUOT},
 259         {NT_STATUS_QUOTA_EXCEEDED, EDQUOT},
 260         {NT_STATUS_REGISTRY_QUOTA_LIMIT, EDQUOT},
 261         {NT_STATUS_LICENSE_QUOTA_EXCEEDED, EDQUOT},
 262 #endif
 263 #ifdef ETIME
 264         {NT_STATUS_TIMER_NOT_CANCELED, ETIME},
 265 #endif
 266         {NT_STATUS_INVALID_PARAMETER, EINVAL},
 267         {NT_STATUS_NO_SUCH_DEVICE, ENODEV},
 268         {NT_STATUS_NO_SUCH_FILE, ENOENT},
 269 #ifdef ENODATA
 270         {NT_STATUS_END_OF_FILE, ENODATA},
 271 #endif
 272 #ifdef ENOMEDIUM
 273         {NT_STATUS_NO_MEDIA_IN_DEVICE, ENOMEDIUM},
 274         {NT_STATUS_NO_MEDIA, ENOMEDIUM},
 275 #endif
 276         {NT_STATUS_NONEXISTENT_SECTOR, ESPIPE},
 277         {NT_STATUS_NO_MEMORY, ENOMEM},
 278         {NT_STATUS_CONFLICTING_ADDRESSES, EADDRINUSE},
 279         {NT_STATUS_NOT_MAPPED_VIEW, EINVAL},
 280         {NT_STATUS_UNABLE_TO_FREE_VM, EADDRINUSE},
 281         {NT_STATUS_ACCESS_DENIED, EACCES},
 282         {NT_STATUS_BUFFER_TOO_SMALL, ENOBUFS},
 283         {NT_STATUS_WRONG_PASSWORD, EACCES},
 284         {NT_STATUS_LOGON_FAILURE, EACCES},
 285         {NT_STATUS_INVALID_WORKSTATION, EACCES},
 286         {NT_STATUS_INVALID_LOGON_HOURS, EACCES},
 287         {NT_STATUS_PASSWORD_EXPIRED, EACCES},
 288         {NT_STATUS_ACCOUNT_DISABLED, EACCES},
 289         {NT_STATUS_DISK_FULL, ENOSPC},
 290         {NT_STATUS_INVALID_PIPE_STATE, EPIPE},
 291         {NT_STATUS_PIPE_BUSY, EPIPE},
 292         {NT_STATUS_PIPE_DISCONNECTED, EPIPE},
 293         {NT_STATUS_PIPE_NOT_AVAILABLE, ENOSYS},
 294         {NT_STATUS_FILE_IS_A_DIRECTORY, EISDIR},
 295         {NT_STATUS_NOT_SUPPORTED, ENOSYS},
 296         {NT_STATUS_NOT_A_DIRECTORY, ENOTDIR},
 297         {NT_STATUS_DIRECTORY_NOT_EMPTY, ENOTEMPTY},
 298         {NT_STATUS_NETWORK_UNREACHABLE, ENETUNREACH},
 299         {NT_STATUS_HOST_UNREACHABLE, EHOSTUNREACH},
 300         {NT_STATUS_CONNECTION_ABORTED, ECONNABORTED},
 301         {NT_STATUS_CONNECTION_REFUSED, ECONNREFUSED},
 302         {NT_STATUS_TOO_MANY_LINKS, EMLINK},
 303         {NT_STATUS_NETWORK_BUSY, EBUSY},
 304         {NT_STATUS_DEVICE_DOES_NOT_EXIST, ENODEV},
 305 #ifdef ELIBACC
 306         {NT_STATUS_DLL_NOT_FOUND, ELIBACC},
 307 #endif
 308         {NT_STATUS_PIPE_BROKEN, EPIPE},
 309         {NT_STATUS_REMOTE_NOT_LISTENING, ECONNREFUSED},
 310         {NT_STATUS_NETWORK_ACCESS_DENIED, EACCES},
 311         {NT_STATUS_TOO_MANY_OPENED_FILES, EMFILE},
 312 #ifdef EPROTO
 313         {NT_STATUS_DEVICE_PROTOCOL_ERROR, EPROTO},
 314 #endif
 315         {NT_STATUS_FLOAT_OVERFLOW, ERANGE},
 316         {NT_STATUS_FLOAT_UNDERFLOW, ERANGE},
 317         {NT_STATUS_INTEGER_OVERFLOW, ERANGE},
 318         {NT_STATUS_MEDIA_WRITE_PROTECTED, EROFS},
 319         {NT_STATUS_PIPE_CONNECTED, EISCONN},
 320         {NT_STATUS_MEMORY_NOT_ALLOCATED, EFAULT},
 321         {NT_STATUS_FLOAT_INEXACT_RESULT, ERANGE},
 322         {NT_STATUS_ILL_FORMED_PASSWORD, EACCES},
 323         {NT_STATUS_PASSWORD_RESTRICTION, EACCES},
 324         {NT_STATUS_ACCOUNT_RESTRICTION, EACCES},
 325         {NT_STATUS_PORT_CONNECTION_REFUSED, ECONNREFUSED},
 326         {NT_STATUS_NAME_TOO_LONG, ENAMETOOLONG},
 327         {NT_STATUS_REMOTE_DISCONNECT, ESHUTDOWN},
 328         {NT_STATUS_CONNECTION_DISCONNECTED, ECONNABORTED},
 329         {NT_STATUS_CONNECTION_RESET, ENETRESET},
 330 #ifdef ENOTUNIQ
 331         {NT_STATUS_IP_ADDRESS_CONFLICT1, ENOTUNIQ},
 332         {NT_STATUS_IP_ADDRESS_CONFLICT2, ENOTUNIQ},
 333 #endif
 334         {NT_STATUS_PORT_MESSAGE_TOO_LONG, EMSGSIZE},
 335         {NT_STATUS_PROTOCOL_UNREACHABLE, ENOPROTOOPT},
 336         {NT_STATUS_ADDRESS_ALREADY_EXISTS, EADDRINUSE},
 337         {NT_STATUS_PORT_UNREACHABLE, EHOSTUNREACH},
 338         {NT_STATUS_IO_TIMEOUT, ETIMEDOUT},
 339         {NT_STATUS_RETRY, EAGAIN},
 340 #ifdef ENOTUNIQ
 341         {NT_STATUS_DUPLICATE_NAME, ENOTUNIQ},
 342 #endif
 343 #ifdef ECOMM
 344         {NT_STATUS_NET_WRITE_FAULT, ECOMM},
 345 #endif
 346 #ifdef EXDEV
 347         {NT_STATUS_NOT_SAME_DEVICE, EXDEV},
 348 #endif
 349         {NT_STATUS(0), 0}
 350 };
 351
 352 /****************************************************************************
 353  The following mappings need tidying up and moving into libsmb/errormap.c...
 354 ****************************************************************************/
 355
 356 static int cli_errno_from_nt(NTSTATUS status)
 357 {
 358         int i;
 359         DEBUG(10,("cli_errno_from_nt: 32 bit codes: code=%08x\n", NT_STATUS_V(status)));
 360
 361         /* Status codes without this bit set are not errors */
 362
 363         if (!(NT_STATUS_V(status) & 0xc0000000)) {
 364                 return 0;
 365         }
 366
 367         for (i=0;nt_errno_map[i].error;i++) {
 368                 if (NT_STATUS_V(nt_errno_map[i].status) ==
 369                     NT_STATUS_V(status)) return nt_errno_map[i].error;
 370         }
 371
 372         /* for all other cases - a default code */
 373         return EINVAL;
 374 }
 375
 376 /* Return a UNIX errno appropriate for the error received in the last
 377    packet. */
 378
 379 int cli_errno(struct cli_state *cli)
 380 {
 381         NTSTATUS status;
 382
 383         if (cli_is_nt_error(cli)) {
 384                 status = cli_nt_error(cli);
 385                 return cli_errno_from_nt(status);
 386         }
 387
 388         if (cli_is_dos_error(cli)) {
 389                 uint8 eclass;
 390                 uint32 ecode;
 391
 392                 cli_dos_error(cli, &eclass, &ecode);
 393                 status = dos_to_ntstatus(eclass, ecode);
 394                 return cli_errno_from_nt(status);
 395         }
 396
 397         /*
 398          * Yuck!  A special case for this Vista error.  Since its high-order
 399          * byte isn't 0xc0, it doesn't match cli_is_nt_error() above.
 400          */
 401         status = cli_nt_error(cli);
 402         if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
 403             return EACCES;
 404         }
 405
 406         /* for other cases */
 407         return EINVAL;
 408 }
 409
 410 /* Return true if the last packet was in error */
 411
 412 bool cli_is_error(struct cli_state *cli)
 413 {
 414         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
 415
 416         /* A socket error is always an error. */
 417         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 418                 return True;
 419         }
 420
 421         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 422                 /* Return error is error bits are set */
 423                 rcls = IVAL(cli->inbuf, smb_rcls);
 424                 return (rcls & 0xF0000000) == 0xC0000000;
 425         }
 426
 427         /* Return error if error class in non-zero */
 428
 429         rcls = CVAL(cli->inbuf, smb_rcls);
 430         return rcls != 0;
 431 }
 432
 433 /* Return true if the last error was an NT error */
 434
 435 bool cli_is_nt_error(struct cli_state *cli)
 436 {
 437         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 438
 439         /* A socket error is always an NT error. */
 440         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 441                 return True;
 442         }
 443
 444         return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 445 }
 446
 447 /* Return true if the last error was a DOS error */
 448
 449 bool cli_is_dos_error(struct cli_state *cli)
 450 {
 451         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 452
 453         /* A socket error is always a DOS error. */
 454         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 455                 return True;
 456         }
 457
 458         return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 459 }
 460
 461 /* Return the last error always as an NTSTATUS. */
 462
 463 NTSTATUS cli_get_nt_error(struct cli_state *cli)
 464 {
 465         if (cli_is_nt_error(cli)) {
 466                 return cli_nt_error(cli);
 467         } else if (cli_is_dos_error(cli)) {
 468                 uint32 ecode;
 469                 uint8 eclass;
 470                 cli_dos_error(cli, &eclass, &ecode);
 471                 return dos_to_ntstatus(eclass, ecode);
 472         } else {
 473                 /* Something went wrong, we don't know what. */
 474                 return NT_STATUS_UNSUCCESSFUL;
 475         }
 476 }
 477
 478 /* Push an error code into the inbuf to be returned on the next
 479  * query. */
 480
 481 void cli_set_nt_error(struct cli_state *cli, NTSTATUS status)
 482 {
 483         SSVAL(cli->inbuf,smb_flg2, SVAL(cli->inbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
 484         SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(status));
 485 }
 486
 487 /* Reset an error. */
 488
 489 void cli_reset_error(struct cli_state *cli)
 490 {
 491         if (SVAL(cli->inbuf,smb_flg2) & FLAGS2_32_BIT_ERROR_CODES) {
 492                 SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(NT_STATUS_OK));
 493         } else {
 494                 SCVAL(cli->inbuf,smb_rcls,0);
 495                 SSVAL(cli->inbuf,smb_err,0);
 496         }
 497 }