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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24
  25 /*****************************************************
  26  RAP error codes - a small start but will be extended.
  27
  28  XXX: Perhaps these should move into a common function because they're
  29  duplicated in clirap2.c
  30
  31 *******************************************************/
  32
  33 static const struct {
  34         int err;
  35         const char *message;
  36 } rap_errmap[] = {
  37         {5,    "RAP5: User has insufficient privilege" },
  38         {50,   "RAP50: Not supported by server" },
  39         {65,   "RAP65: Access denied" },
  40         {86,   "RAP86: The specified password is invalid" },
  41         {2220, "RAP2220: Group does not exist" },
  42         {2221, "RAP2221: User does not exist" },
  43         {2226, "RAP2226: Operation only permitted on a Primary Domain Controller"  },
  44         {2237, "RAP2237: User is not in group" },
  45         {2242, "RAP2242: The password of this user has expired." },
  46         {2243, "RAP2243: The password of this user cannot change." },
  47         {2244, "RAP2244: This password cannot be used now (password history conflict)." },
  48         {2245, "RAP2245: The password is shorter than required." },
  49         {2246, "RAP2246: The password of this user is too recent to change."},
  50
  51         /* these really shouldn't be here ... */
  52         {0x80, "Not listening on called name"},
  53         {0x81, "Not listening for calling name"},
  54         {0x82, "Called name not present"},
  55         {0x83, "Called name present, but insufficient resources"},
  56
  57         {0, NULL}
  58 };
  59
  60 /****************************************************************************
  61  Return a description of an SMB error.
  62 ****************************************************************************/
  63
  64 static const char *cli_smb_errstr(struct cli_state *cli)
  65 {
  66         return smb_dos_errstr(cli->inbuf);
  67 }
  68
  69 /****************************************************************************
  70  Convert a socket error into an NTSTATUS.
  71 ****************************************************************************/
  72
  73 static NTSTATUS cli_smb_rw_error_to_ntstatus(struct cli_state *cli)
  74 {
  75         switch(cli->smb_rw_error) {
  76                 case READ_TIMEOUT:
  77                         return NT_STATUS_IO_TIMEOUT;
  78                 case READ_EOF:
  79                         return NT_STATUS_END_OF_FILE;
  80                 /* What we shoud really do for read/write errors is convert from errno. */
  81                 /* FIXME. JRA. */
  82                 case READ_ERROR:
  83                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
  84                 case WRITE_ERROR:
  85                         return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
  86                 case READ_BAD_SIG:
  87                 case READ_BAD_DECRYPT:
  88                         return NT_STATUS_INVALID_PARAMETER;
  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         static fstring cli_error_message;
 104         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
 105         uint8 errclass;
 106         int i;
 107
 108         if (!cli->initialised) {
 109                 fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
 110                 return cli_error_message;
 111         }
 112
 113         /* Was it server socket error ? */
 114         if (cli->fd == -1 && cli->smb_rw_error) {
 115                 switch(cli->smb_rw_error) {
 116                         case READ_TIMEOUT:
 117                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 118                                         "Call timed out: server did not respond after %d milliseconds",
 119                                         cli->timeout);
 120                                 break;
 121                         case READ_EOF:
 122                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 123                                         "Call returned zero bytes (EOF)" );
 124                                 break;
 125                         case READ_ERROR:
 126                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 127                                         "Read error: %s", strerror(errno) );
 128                                 break;
 129                         case WRITE_ERROR:
 130                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 131                                         "Write error: %s", strerror(errno) );
 132                                 break;
 133                         case READ_BAD_SIG:
 134                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 135                                         "Server packet had invalid SMB signature!");
 136                                 break;
 137                         case READ_BAD_DECRYPT:
 138                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 139                                         "Server packet could not be decrypted !");
 140                                 break;
 141                         default:
 142                                 slprintf(cli_error_message, sizeof(cli_error_message) - 1,
 143                                         "Unknown error code %d\n", cli->smb_rw_error );
 144                                 break;
 145                 }
 146                 return cli_error_message;
 147         }
 148
 149         /* Case #1: RAP error */
 150         if (cli->rap_error) {
 151                 for (i = 0; rap_errmap[i].message != NULL; i++) {
 152                         if (rap_errmap[i].err == cli->rap_error) {
 153                                 return rap_errmap[i].message;
 154                         }
 155                 }
 156
 157                 slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
 158                         cli->rap_error);
 159
 160                 return cli_error_message;
 161         }
 162
 163         /* Case #2: 32-bit NT errors */
 164         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 165                 NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 166
 167                 return nt_errstr(status);
 168         }
 169
 170         cli_dos_error(cli, &errclass, &errnum);
 171
 172         /* Case #3: SMB error */
 173
 174         return cli_smb_errstr(cli);
 175 }
 176
 177
 178 /****************************************************************************
 179  Return the 32-bit NT status code from the last packet.
 180 ****************************************************************************/
 181
 182 NTSTATUS cli_nt_error(struct cli_state *cli)
 183 {
 184         int flgs2 = SVAL(cli->inbuf,smb_flg2);
 185
 186         /* Deal with socket errors first. */
 187         if (cli->fd == -1 && cli->smb_rw_error) {
 188                 return cli_smb_rw_error_to_ntstatus(cli);
 189         }
 190
 191         if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
 192                 int e_class  = CVAL(cli->inbuf,smb_rcls);
 193                 int code  = SVAL(cli->inbuf,smb_err);
 194                 return dos_to_ntstatus(e_class, code);
 195         }
 196
 197         return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 198 }
 199
 200
 201 /****************************************************************************
 202  Return the DOS error from the last packet - an error class and an error
 203  code.
 204 ****************************************************************************/
 205
 206 void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
 207 {
 208         int  flgs2;
 209
 210         if(!cli->initialised) {
 211                 return;
 212         }
 213
 214         /* Deal with socket errors first. */
 215         if (cli->fd == -1 && cli->smb_rw_error) {
 216                 NTSTATUS status = cli_smb_rw_error_to_ntstatus(cli);
 217                 ntstatus_to_dos( status, eclass, ecode);
 218                 return;
 219         }
 220
 221         flgs2 = SVAL(cli->inbuf,smb_flg2);
 222
 223         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 224                 NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
 225                 ntstatus_to_dos(ntstatus, eclass, ecode);
 226                 return;
 227         }
 228
 229         *eclass  = CVAL(cli->inbuf,smb_rcls);
 230         *ecode  = SVAL(cli->inbuf,smb_err);
 231 }
 232
 233 /* Return a UNIX errno from a NT status code */
 234 static const struct {
 235         NTSTATUS status;
 236         int error;
 237 } nt_errno_map[] = {
 238         {NT_STATUS_ACCESS_VIOLATION, EACCES},
 239         {NT_STATUS_INVALID_HANDLE, EBADF},
 240         {NT_STATUS_ACCESS_DENIED, EACCES},
 241         {NT_STATUS_OBJECT_NAME_NOT_FOUND, ENOENT},
 242         {NT_STATUS_SHARING_VIOLATION, EBUSY},
 243         {NT_STATUS_OBJECT_PATH_INVALID, ENOTDIR},
 244         {NT_STATUS_OBJECT_NAME_COLLISION, EEXIST},
 245         {NT_STATUS_PATH_NOT_COVERED, ENOENT},
 246         {NT_STATUS_UNSUCCESSFUL, EINVAL},
 247         {NT_STATUS_NOT_IMPLEMENTED, ENOSYS},
 248         {NT_STATUS_IN_PAGE_ERROR, EFAULT},
 249         {NT_STATUS_BAD_NETWORK_NAME, ENOENT},
 250 #ifdef EDQUOT
 251         {NT_STATUS_PAGEFILE_QUOTA, EDQUOT},
 252         {NT_STATUS_QUOTA_EXCEEDED, EDQUOT},
 253         {NT_STATUS_REGISTRY_QUOTA_LIMIT, EDQUOT},
 254         {NT_STATUS_LICENSE_QUOTA_EXCEEDED, EDQUOT},
 255 #endif
 256 #ifdef ETIME
 257         {NT_STATUS_TIMER_NOT_CANCELED, ETIME},
 258 #endif
 259         {NT_STATUS_INVALID_PARAMETER, EINVAL},
 260         {NT_STATUS_NO_SUCH_DEVICE, ENODEV},
 261         {NT_STATUS_NO_SUCH_FILE, ENOENT},
 262 #ifdef ENODATA
 263         {NT_STATUS_END_OF_FILE, ENODATA},
 264 #endif
 265 #ifdef ENOMEDIUM
 266         {NT_STATUS_NO_MEDIA_IN_DEVICE, ENOMEDIUM},
 267         {NT_STATUS_NO_MEDIA, ENOMEDIUM},
 268 #endif
 269         {NT_STATUS_NONEXISTENT_SECTOR, ESPIPE},
 270         {NT_STATUS_NO_MEMORY, ENOMEM},
 271         {NT_STATUS_CONFLICTING_ADDRESSES, EADDRINUSE},
 272         {NT_STATUS_NOT_MAPPED_VIEW, EINVAL},
 273         {NT_STATUS_UNABLE_TO_FREE_VM, EADDRINUSE},
 274         {NT_STATUS_ACCESS_DENIED, EACCES},
 275         {NT_STATUS_BUFFER_TOO_SMALL, ENOBUFS},
 276         {NT_STATUS_WRONG_PASSWORD, EACCES},
 277         {NT_STATUS_LOGON_FAILURE, EACCES},
 278         {NT_STATUS_INVALID_WORKSTATION, EACCES},
 279         {NT_STATUS_INVALID_LOGON_HOURS, EACCES},
 280         {NT_STATUS_PASSWORD_EXPIRED, EACCES},
 281         {NT_STATUS_ACCOUNT_DISABLED, EACCES},
 282         {NT_STATUS_DISK_FULL, ENOSPC},
 283         {NT_STATUS_INVALID_PIPE_STATE, EPIPE},
 284         {NT_STATUS_PIPE_BUSY, EPIPE},
 285         {NT_STATUS_PIPE_DISCONNECTED, EPIPE},
 286         {NT_STATUS_PIPE_NOT_AVAILABLE, ENOSYS},
 287         {NT_STATUS_FILE_IS_A_DIRECTORY, EISDIR},
 288         {NT_STATUS_NOT_SUPPORTED, ENOSYS},
 289         {NT_STATUS_NOT_A_DIRECTORY, ENOTDIR},
 290         {NT_STATUS_DIRECTORY_NOT_EMPTY, ENOTEMPTY},
 291         {NT_STATUS_NETWORK_UNREACHABLE, ENETUNREACH},
 292         {NT_STATUS_HOST_UNREACHABLE, EHOSTUNREACH},
 293         {NT_STATUS_CONNECTION_ABORTED, ECONNABORTED},
 294         {NT_STATUS_CONNECTION_REFUSED, ECONNREFUSED},
 295         {NT_STATUS_TOO_MANY_LINKS, EMLINK},
 296         {NT_STATUS_NETWORK_BUSY, EBUSY},
 297         {NT_STATUS_DEVICE_DOES_NOT_EXIST, ENODEV},
 298 #ifdef ELIBACC
 299         {NT_STATUS_DLL_NOT_FOUND, ELIBACC},
 300 #endif
 301         {NT_STATUS_PIPE_BROKEN, EPIPE},
 302         {NT_STATUS_REMOTE_NOT_LISTENING, ECONNREFUSED},
 303         {NT_STATUS_NETWORK_ACCESS_DENIED, EACCES},
 304         {NT_STATUS_TOO_MANY_OPENED_FILES, EMFILE},
 305 #ifdef EPROTO
 306         {NT_STATUS_DEVICE_PROTOCOL_ERROR, EPROTO},
 307 #endif
 308         {NT_STATUS_FLOAT_OVERFLOW, ERANGE},
 309         {NT_STATUS_FLOAT_UNDERFLOW, ERANGE},
 310         {NT_STATUS_INTEGER_OVERFLOW, ERANGE},
 311         {NT_STATUS_MEDIA_WRITE_PROTECTED, EROFS},
 312         {NT_STATUS_PIPE_CONNECTED, EISCONN},
 313         {NT_STATUS_MEMORY_NOT_ALLOCATED, EFAULT},
 314         {NT_STATUS_FLOAT_INEXACT_RESULT, ERANGE},
 315         {NT_STATUS_ILL_FORMED_PASSWORD, EACCES},
 316         {NT_STATUS_PASSWORD_RESTRICTION, EACCES},
 317         {NT_STATUS_ACCOUNT_RESTRICTION, EACCES},
 318         {NT_STATUS_PORT_CONNECTION_REFUSED, ECONNREFUSED},
 319         {NT_STATUS_NAME_TOO_LONG, ENAMETOOLONG},
 320         {NT_STATUS_REMOTE_DISCONNECT, ESHUTDOWN},
 321         {NT_STATUS_CONNECTION_DISCONNECTED, ECONNABORTED},
 322         {NT_STATUS_CONNECTION_RESET, ENETRESET},
 323 #ifdef ENOTUNIQ
 324         {NT_STATUS_IP_ADDRESS_CONFLICT1, ENOTUNIQ},
 325         {NT_STATUS_IP_ADDRESS_CONFLICT2, ENOTUNIQ},
 326 #endif
 327         {NT_STATUS_PORT_MESSAGE_TOO_LONG, EMSGSIZE},
 328         {NT_STATUS_PROTOCOL_UNREACHABLE, ENOPROTOOPT},
 329         {NT_STATUS_ADDRESS_ALREADY_EXISTS, EADDRINUSE},
 330         {NT_STATUS_PORT_UNREACHABLE, EHOSTUNREACH},
 331         {NT_STATUS_IO_TIMEOUT, ETIMEDOUT},
 332         {NT_STATUS_RETRY, EAGAIN},
 333 #ifdef ENOTUNIQ
 334         {NT_STATUS_DUPLICATE_NAME, ENOTUNIQ},
 335 #endif
 336 #ifdef ECOMM
 337         {NT_STATUS_NET_WRITE_FAULT, ECOMM},
 338 #endif
 339 #ifdef EXDEV
 340         {NT_STATUS_NOT_SAME_DEVICE, EXDEV},
 341 #endif
 342         {NT_STATUS(0), 0}
 343 };
 344
 345 /****************************************************************************
 346  The following mappings need tidying up and moving into libsmb/errormap.c...
 347 ****************************************************************************/
 348
 349 static int cli_errno_from_nt(NTSTATUS status)
 350 {
 351         int i;
 352         DEBUG(10,("cli_errno_from_nt: 32 bit codes: code=%08x\n", NT_STATUS_V(status)));
 353
 354         /* Status codes without this bit set are not errors */
 355
 356         if (!(NT_STATUS_V(status) & 0xc0000000)) {
 357                 return 0;
 358         }
 359
 360         for (i=0;nt_errno_map[i].error;i++) {
 361                 if (NT_STATUS_V(nt_errno_map[i].status) ==
 362                     NT_STATUS_V(status)) return nt_errno_map[i].error;
 363         }
 364
 365         /* for all other cases - a default code */
 366         return EINVAL;
 367 }
 368
 369 /* Return a UNIX errno appropriate for the error received in the last
 370    packet. */
 371
 372 int cli_errno(struct cli_state *cli)
 373 {
 374         NTSTATUS status;
 375
 376         if (cli_is_nt_error(cli)) {
 377                 status = cli_nt_error(cli);
 378                 return cli_errno_from_nt(status);
 379         }
 380
 381         if (cli_is_dos_error(cli)) {
 382                 uint8 eclass;
 383                 uint32 ecode;
 384
 385                 cli_dos_error(cli, &eclass, &ecode);
 386                 status = dos_to_ntstatus(eclass, ecode);
 387                 return cli_errno_from_nt(status);
 388         }
 389
 390         /*
 391          * Yuck!  A special case for this Vista error.  Since its high-order
 392          * byte isn't 0xc0, it doesn't match cli_is_nt_error() above.
 393          */
 394         status = cli_nt_error(cli);
 395         if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
 396             return EACCES;
 397         }
 398
 399         /* for other cases */
 400         return EINVAL;
 401 }
 402
 403 /* Return true if the last packet was in error */
 404
 405 BOOL cli_is_error(struct cli_state *cli)
 406 {
 407         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
 408
 409         /* A socket error is always an error. */
 410         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 411                 return True;
 412         }
 413
 414         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 415                 /* Return error is error bits are set */
 416                 rcls = IVAL(cli->inbuf, smb_rcls);
 417                 return (rcls & 0xF0000000) == 0xC0000000;
 418         }
 419
 420         /* Return error if error class in non-zero */
 421
 422         rcls = CVAL(cli->inbuf, smb_rcls);
 423         return rcls != 0;
 424 }
 425
 426 /* Return true if the last error was an NT error */
 427
 428 BOOL cli_is_nt_error(struct cli_state *cli)
 429 {
 430         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 431
 432         /* A socket error is always an NT error. */
 433         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 434                 return True;
 435         }
 436
 437         return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 438 }
 439
 440 /* Return true if the last error was a DOS error */
 441
 442 BOOL cli_is_dos_error(struct cli_state *cli)
 443 {
 444         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 445
 446         /* A socket error is always a DOS error. */
 447         if (cli->fd == -1 && cli->smb_rw_error != 0) {
 448                 return True;
 449         }
 450
 451         return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 452 }
 453
 454 /* Return the last error always as an NTSTATUS. */
 455
 456 NTSTATUS cli_get_nt_error(struct cli_state *cli)
 457 {
 458         if (cli_is_nt_error(cli)) {
 459                 return cli_nt_error(cli);
 460         } else if (cli_is_dos_error(cli)) {
 461                 uint32 ecode;
 462                 uint8 eclass;
 463                 cli_dos_error(cli, &eclass, &ecode);
 464                 return dos_to_ntstatus(eclass, ecode);
 465         } else {
 466                 /* Something went wrong, we don't know what. */
 467                 return NT_STATUS_UNSUCCESSFUL;
 468         }
 469 }
 470
 471 /* Push an error code into the inbuf to be returned on the next
 472  * query. */
 473
 474 void cli_set_nt_error(struct cli_state *cli, NTSTATUS status)
 475 {
 476         SSVAL(cli->inbuf,smb_flg2, SVAL(cli->inbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
 477         SIVAL(cli->inbuf, smb_rcls, NT_STATUS_V(status));
 478 }