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 READ_TIMEOUT:
  76                         return NT_STATUS_IO_TIMEOUT;
  77                 case 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 READ_ERROR:
  82                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
  83                 case WRITE_ERROR:
  84                         return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
  85                 case READ_BAD_SIG:
  86                 case READ_BAD_DECRYPT:
  87                         return NT_STATUS_INVALID_PARAMETER;
  88                 default:
  89                         break;
  90         }
  91         return NT_STATUS_UNSUCCESSFUL;
  92 }
  93
  94 /***************************************************************************
  95  Return an error message - either an NT error, SMB error or a RAP error.
  96  Note some of the NT errors are actually warnings or "informational" errors
  97  in which case they can be safely ignored.
  98 ****************************************************************************/
  99
 100 const char *cli_errstr(struct cli_state *cli)
 101 {
 102         static fstring cli_error_message;
 103         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
 104         uint8 errclass;
 105         int i;
 106
 107         if (!cli->initialised) {
 108                 fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
 109                 return cli_error_message;
 110         }
 111
 112         /* Was it server socket error ? */
 113         if (cli->fd == -1 && cli->smb_rw_error) {
 114                 switch(cli->smb_rw_error) {
 115                         case READ_TIMEOUT:
 116                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 117                                         "Call timed out: server did not respond after %d milliseconds",
 118                                         cli->timeout);
 119                                 break;
 120                         case READ_EOF:
 121                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 122                                         "Call returned zero bytes (EOF)" );
 123                                 break;
 124                         case READ_ERROR:
 125                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 126                                         "Read error: %s", strerror(errno) );
 127                                 break;
 128                         case WRITE_ERROR:
 129                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 130                                         "Write error: %s", strerror(errno) );
 131                                 break;
 132                         case READ_BAD_SIG:
 133                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 134                                         "Server packet had invalid SMB signature!");
 135                                 break;
 136                         case READ_BAD_DECRYPT:
 137                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 138                                         "Server packet could not be decrypted !");
 139                                 break;
 140                         default:
 141                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 142                                         "Unknown error code %d\n", cli->smb_rw_error );
 143                                 break;
 144                 }
 145                 return cli_error_message;
 146         }
 147
 148         /* Case #1: RAP error */
 149         if (cli->rap_error) {
 150                 for (i = 0; rap_errmap[i].message != NULL; i++) {
 151                         if (rap_errmap[i].err == cli->rap_error) {
 152                                 return rap_errmap[i].message;
 153                         }
 154                 }
 155
 156                 slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
 157                         cli->rap_error);
 158
 159                 return cli_error_message;
 160         }
 161
 162         /* Case #2: 32-bit NT errors */
 163         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 164                 NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 165
 166                 return nt_errstr(status);
 167         }
 168
 169         cli_dos_error(cli, &errclass, &errnum);
 170
 171         /* Case #3: SMB error */
 172
 173         return cli_smb_errstr(cli);
 174 }
 175
 176
 177 /****************************************************************************
 178  Return the 32-bit NT status code from the last packet.
 179 ****************************************************************************/
 180
 181 NTSTATUS cli_nt_error(struct cli_state *cli)
 182 {
 183         int flgs2 = SVAL(cli->inbuf,smb_flg2);
 184
 185         /* Deal with socket errors first. */
 186         if (cli->fd == -1 && cli->smb_rw_error) {
 187                 return cli_smb_rw_error_to_ntstatus(cli);
 188         }
 189
 190         if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
 191                 int e_class  = CVAL(cli->inbuf,smb_rcls);
 192                 int code  = SVAL(cli->inbuf,smb_err);
 193                 return dos_to_ntstatus(e_class, code);
 194         }
 195
 196         return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 197 }
 198
 199
 200 /****************************************************************************
 201  Return the DOS error from the last packet - an error class and an error
 202  code.
 203 ****************************************************************************/
 204
 205 void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
 206 {
 207         int  flgs2;
 208
 209         if(!cli->initialised) {
 210                 return;
 211         }
 212
 213         /* Deal with socket errors first. */
 214         if (cli->fd == -1 && cli->smb_rw_error) {
 215                 NTSTATUS status = cli_smb_rw_error_to_ntstatus(cli);
 216                 ntstatus_to_dos( status, eclass, ecode);
 217                 return;
 218         }
 219
 220         flgs2 = SVAL(cli->inbuf,smb_flg2);
 221
 222         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 223                 NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
 224                 ntstatus_to_dos(ntstatus, eclass, ecode);
 225                 return;
 226         }
 227
 228         *eclass  = CVAL(cli->inbuf,smb_rcls);
 229         *ecode  = SVAL(cli->inbuf,smb_err);
 230 }
 231
 232 /* Return a UNIX errno from a NT status code */
 233 static const struct {
 234         NTSTATUS status;
 235         int error;
 236 } nt_errno_map[] = {
 237         {NT_STATUS_ACCESS_VIOLATION, EACCES},
 238         {NT_STATUS_INVALID_HANDLE, EBADF},
 239         {NT_STATUS_ACCESS_DENIED, EACCES},
 240         {NT_STATUS_OBJECT_NAME_NOT_FOUND, ENOENT},
 241         {NT_STATUS_SHARING_VIOLATION, EBUSY},
 242         {NT_STATUS_OBJECT_PATH_INVALID, ENOTDIR},
 243         {NT_STATUS_OBJECT_NAME_COLLISION, EEXIST},
 244         {NT_STATUS_PATH_NOT_COVERED, ENOENT},
 245         {NT_STATUS_UNSUCCESSFUL, EINVAL},
 246         {NT_STATUS_NOT_IMPLEMENTED, ENOSYS},
 247         {NT_STATUS_IN_PAGE_ERROR, EFAULT},
 248         {NT_STATUS_BAD_NETWORK_NAME, ENOENT},
 249 #ifdef EDQUOT
 250         {NT_STATUS_PAGEFILE_QUOTA, EDQUOT},
 251         {NT_STATUS_QUOTA_EXCEEDED, EDQUOT},
 252         {NT_STATUS_REGISTRY_QUOTA_LIMIT, EDQUOT},
 253         {NT_STATUS_LICENSE_QUOTA_EXCEEDED, EDQUOT},
 254 #endif
 255 #ifdef ETIME
 256         {NT_STATUS_TIMER_NOT_CANCELED, ETIME},
 257 #endif
 258         {NT_STATUS_INVALID_PARAMETER, EINVAL},
 259         {NT_STATUS_NO_SUCH_DEVICE, ENODEV},
 260         {NT_STATUS_NO_SUCH_FILE, ENOENT},
 261 #ifdef ENODATA
 262         {NT_STATUS_END_OF_FILE, ENODATA},
 263 #endif
 264 #ifdef ENOMEDIUM
 265         {NT_STATUS_NO_MEDIA_IN_DEVICE, ENOMEDIUM},
 266         {NT_STATUS_NO_MEDIA, ENOMEDIUM},
 267 #endif
 268         {NT_STATUS_NONEXISTENT_SECTOR, ESPIPE},
 269         {NT_STATUS_NO_MEMORY, ENOMEM},
 270         {NT_STATUS_CONFLICTING_ADDRESSES, EADDRINUSE},
 271         {NT_STATUS_NOT_MAPPED_VIEW, EINVAL},
 272         {NT_STATUS_UNABLE_TO_FREE_VM, EADDRINUSE},
 273         {NT_STATUS_ACCESS_DENIED, EACCES},
 274         {NT_STATUS_BUFFER_TOO_SMALL, ENOBUFS},
 275         {NT_STATUS_WRONG_PASSWORD, EACCES},
 276         {NT_STATUS_LOGON_FAILURE, EACCES},
 277         {NT_STATUS_INVALID_WORKSTATION, EACCES},
 278         {NT_STATUS_INVALID_LOGON_HOURS, EACCES},
 279         {NT_STATUS_PASSWORD_EXPIRED, EACCES},
 280         {NT_STATUS_ACCOUNT_DISABLED, EACCES},
 281         {NT_STATUS_DISK_FULL, ENOSPC},
 282         {NT_STATUS_INVALID_PIPE_STATE, EPIPE},
 283         {NT_STATUS_PIPE_BUSY, EPIPE},
 284         {NT_STATUS_PIPE_DISCONNECTED, EPIPE},
 285         {NT_STATUS_PIPE_NOT_AVAILABLE, ENOSYS},
 286         {NT_STATUS_FILE_IS_A_DIRECTORY, EISDIR},
 287         {NT_STATUS_NOT_SUPPORTED, ENOSYS},
 288         {NT_STATUS_NOT_A_DIRECTORY, ENOTDIR},
 289         {NT_STATUS_DIRECTORY_NOT_EMPTY, ENOTEMPTY},
 290         {NT_STATUS_NETWORK_UNREACHABLE, ENETUNREACH},
 291         {NT_STATUS_HOST_UNREACHABLE, EHOSTUNREACH},
 292         {NT_STATUS_CONNECTION_ABORTED, ECONNABORTED},
 293         {NT_STATUS_CONNECTION_REFUSED, ECONNREFUSED},
 294         {NT_STATUS_TOO_MANY_LINKS, EMLINK},
 295         {NT_STATUS_NETWORK_BUSY, EBUSY},
 296         {NT_STATUS_DEVICE_DOES_NOT_EXIST, ENODEV},
 297 #ifdef ELIBACC
 298         {NT_STATUS_DLL_NOT_FOUND, ELIBACC},
 299 #endif
 300         {NT_STATUS_PIPE_BROKEN, EPIPE},
 301         {NT_STATUS_REMOTE_NOT_LISTENING, ECONNREFUSED},
 302         {NT_STATUS_NETWORK_ACCESS_DENIED, EACCES},
 303         {NT_STATUS_TOO_MANY_OPENED_FILES, EMFILE},
 304 #ifdef EPROTO
 305         {NT_STATUS_DEVICE_PROTOCOL_ERROR, EPROTO},
 306 #endif
 307         {NT_STATUS_FLOAT_OVERFLOW, ERANGE},
 308         {NT_STATUS_FLOAT_UNDERFLOW, ERANGE},
 309         {NT_STATUS_INTEGER_OVERFLOW, ERANGE},
 310         {NT_STATUS_MEDIA_WRITE_PROTECTED, EROFS},
 311         {NT_STATUS_PIPE_CONNECTED, EISCONN},
 312         {NT_STATUS_MEMORY_NOT_ALLOCATED, EFAULT},
 313         {NT_STATUS_FLOAT_INEXACT_RESULT, ERANGE},
 314         {NT_STATUS_ILL_FORMED_PASSWORD, EACCES},
 315         {NT_STATUS_PASSWORD_RESTRICTION, EACCES},
 316         {NT_STATUS_ACCOUNT_RESTRICTION, EACCES},
 317         {NT_STATUS_PORT_CONNECTION_REFUSED, ECONNREFUSED},
 318         {NT_STATUS_NAME_TOO_LONG, ENAMETOOLONG},
 319         {NT_STATUS_REMOTE_DISCONNECT, ESHUTDOWN},
 320         {NT_STATUS_CONNECTION_DISCONNECTED, ECONNABORTED},
 321         {NT_STATUS_CONNECTION_RESET, ENETRESET},
 322 #ifdef ENOTUNIQ
 323         {NT_STATUS_IP_ADDRESS_CONFLICT1, ENOTUNIQ},
 324         {NT_STATUS_IP_ADDRESS_CONFLICT2, ENOTUNIQ},
 325 #endif
 326         {NT_STATUS_PORT_MESSAGE_TOO_LONG, EMSGSIZE},
 327         {NT_STATUS_PROTOCOL_UNREACHABLE, ENOPROTOOPT},
 328         {NT_STATUS_ADDRESS_ALREADY_EXISTS, EADDRINUSE},
 329         {NT_STATUS_PORT_UNREACHABLE, EHOSTUNREACH},
 330         {NT_STATUS_IO_TIMEOUT, ETIMEDOUT},
 331         {NT_STATUS_RETRY, EAGAIN},
 332 #ifdef ENOTUNIQ
 333         {NT_STATUS_DUPLICATE_NAME, ENOTUNIQ},
 334 #endif
 335 #ifdef ECOMM
 336         {NT_STATUS_NET_WRITE_FAULT, ECOMM},
 337 #endif
 338 #ifdef EXDEV
 339         {NT_STATUS_NOT_SAME_DEVICE, EXDEV},
 340 #endif
 341         {NT_STATUS(0), 0}
 342 };
 343
 344 /****************************************************************************
 345  The following mappings need tidying up and moving into libsmb/errormap.c...
 346 ****************************************************************************/
 347
 348 static int cli_errno_from_nt(NTSTATUS status)
 349 {
 350         int i;
 351         DEBUG(10,("cli_errno_from_nt: 32 bit codes: code=%08x\n", NT_STATUS_V(status)));
 352
 353         /* Status codes without this bit set are not errors */
 354
 355         if (!(NT_STATUS_V(status) & 0xc0000000)) {
 356                 return 0;
 357         }
 358
 359         for (i=0;nt_errno_map[i].error;i++) {
 360                 if (NT_STATUS_V(nt_errno_map[i].status) ==
 361                     NT_STATUS_V(status)) return nt_errno_map[i].error;
 362         }
 363
 364         /* for all other cases - a default code */
 365         return EINVAL;
 366 }
 367
 368 /* Return a UNIX errno appropriate for the error received in the last
 369    packet. */
 370
 371 int cli_errno(struct cli_state *cli)
 372 {
 373         NTSTATUS status;
 374
 375         if (cli_is_nt_error(cli)) {
 376                 status = cli_nt_error(cli);
 377                 return cli_errno_from_nt(status);
 378         }
 379
 380         if (cli_is_dos_error(cli)) {
 381                 uint8 eclass;
 382                 uint32 ecode;
 383
 384                 cli_dos_error(cli, &eclass, &ecode);
 385                 status = dos_to_ntstatus(eclass, ecode);
 386                 return cli_errno_from_nt(status);
 387         }
 388
 389         /*
 390          * Yuck!  A special case for this Vista error.  Since its high-order
 391          * byte isn't 0xc0, it doesn't match cli_is_nt_error() above.
 392          */
 393         status = cli_nt_error(cli);
 394         if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
 395             return EACCES;
 396         }
 397
 398         /* for other cases */
 399         return EINVAL;
 400 }
 401
 402 /* Return true if the last packet was in error */
 403
 404 BOOL cli_is_error(struct cli_state *cli)
 405 {
 406         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
 407
 408         /* A socket error is always an error. */
 409         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 410                 return True;
 411         }
 412
 413         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 414                 /* Return error is error bits are set */
 415                 rcls = IVAL(cli->inbuf, smb_rcls);
 416                 return (rcls & 0xF0000000) == 0xC0000000;
 417         }
 418
 419         /* Return error if error class in non-zero */
 420
 421         rcls = CVAL(cli->inbuf, smb_rcls);
 422         return rcls != 0;
 423 }
 424
 425 /* Return true if the last error was an NT error */
 426
 427 BOOL cli_is_nt_error(struct cli_state *cli)
 428 {
 429         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 430
 431         /* A socket error is always an NT error. */
 432         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 433                 return True;
 434         }
 435
 436         return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 437 }
 438
 439 /* Return true if the last error was a DOS error */
 440
 441 BOOL cli_is_dos_error(struct cli_state *cli)
 442 {
 443         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 444
 445         /* A socket error is always a DOS error. */
 446         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 447                 return True;
 448         }
 449
 450         return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 451 }
 452
 453 /* Return the last error always as an NTSTATUS. */
 454
 455 NTSTATUS cli_get_nt_error(struct cli_state *cli)
 456 {
 457         if (cli_is_nt_error(cli)) {
 458                 return cli_nt_error(cli);
 459         } else if (cli_is_dos_error(cli)) {
 460                 uint32 ecode;
 461                 uint8 eclass;
 462                 cli_dos_error(cli, &eclass, &ecode);
 463                 return dos_to_ntstatus(eclass, ecode);
 464         } else {
 465                 /* Something went wrong, we don't know what. */
 466                 return NT_STATUS_UNSUCCESSFUL;
 467         }
 468 }
 469
 470 /* Push an error code into the inbuf to be returned on the next
 471  * query. */
 472
 473 void cli_set_nt_error(struct cli_state *cli, NTSTATUS status)
 474 {
 475         SSVAL(cli->inbuf,smb_flg2, SVAL(cli->inbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
 476         SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(status));
 477 }