source3/libsmb/clierror.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client error handling routines
   4    Copyright (C) Andrew Tridgell 1994-1998
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #define NO_SYSLOG
  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 {
  35   int err;
  36   char *message;
  37 } rap_errmap[] =
  38 {
  39   {5,    "RAP5: User has insufficient privilege" },
  40   {50,   "RAP50: Not supported by server" },
  41   {65,   "RAP65: Access denied" },
  42   {86,   "RAP86: The specified password is invalid" },
  43   {2220, "RAP2220: Group does not exist" },
  44   {2221, "RAP2221: User does not exist" },
  45   {2226, "RAP2226: Operation only permitted on a Primary Domain Controller"  },
  46   {2237, "RAP2237: User is not in group" },
  47   {2242, "RAP2242: The password of this user has expired." },
  48   {2243, "RAP2243: The password of this user cannot change." },
  49   {2244, "RAP2244: This password cannot be used now (password history conflict)." },
  50   {2245, "RAP2245: The password is shorter than required." },
  51   {2246, "RAP2246: The password of this user is too recent to change."},
  52
  53   /* these really shouldn't be here ... */
  54   {0x80, "Not listening on called name"},
  55   {0x81, "Not listening for calling name"},
  56   {0x82, "Called name not present"},
  57   {0x83, "Called name present, but insufficient resources"},
  58
  59   {0, NULL}
  60 };
  61
  62 /****************************************************************************
  63   return a description of an SMB error
  64 ****************************************************************************/
  65 static char *cli_smb_errstr(struct cli_state *cli)
  66 {
  67         return smb_dos_errstr(cli->inbuf);
  68 }
  69
  70 /***************************************************************************
  71  Return an error message - either an NT error, SMB error or a RAP error.
  72  Note some of the NT errors are actually warnings or "informational" errors
  73  in which case they can be safely ignored.
  74 ****************************************************************************/
  75
  76 char *cli_errstr(struct cli_state *cli)
  77 {
  78         static fstring cli_error_message;
  79         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
  80         uint8 errclass;
  81         int i;
  82
  83         if (!cli->initialised) {
  84                 fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
  85                 return cli_error_message;
  86         }
  87
  88         /* Case #1: RAP error */
  89         if (cli->rap_error) {
  90                 for (i = 0; rap_errmap[i].message != NULL; i++) {
  91                         if (rap_errmap[i].err == cli->rap_error) {
  92                                 return rap_errmap[i].message;
  93                         }
  94                 }
  95
  96                 slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
  97                         cli->rap_error);
  98
  99                 return cli_error_message;
 100         }
 101
 102         /* Case #2: 32-bit NT errors */
 103         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 104                 NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 105
 106                 return nt_errstr(status);
 107         }
 108
 109         cli_dos_error(cli, &errclass, &errnum);
 110
 111         /* Case #3: SMB error */
 112
 113         return cli_smb_errstr(cli);
 114 }
 115
 116
 117 /* Return the 32-bit NT status code from the last packet */
 118 NTSTATUS cli_nt_error(struct cli_state *cli)
 119 {
 120         int flgs2 = SVAL(cli->inbuf,smb_flg2);
 121
 122         if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
 123                 int class  = CVAL(cli->inbuf,smb_rcls);
 124                 int code  = SVAL(cli->inbuf,smb_err);
 125                 return dos_to_ntstatus(class, code);
 126         }
 127
 128         return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 129 }
 130
 131
 132 /* Return the DOS error from the last packet - an error class and an error
 133    code. */
 134 void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
 135 {
 136         int  flgs2;
 137         char rcls;
 138         int code;
 139
 140         if(!cli->initialised) return;
 141
 142         flgs2 = SVAL(cli->inbuf,smb_flg2);
 143
 144         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 145                 NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
 146                 ntstatus_to_dos(ntstatus, eclass, ecode);
 147                 return;
 148         }
 149
 150         rcls  = CVAL(cli->inbuf,smb_rcls);
 151         code  = SVAL(cli->inbuf,smb_err);
 152
 153         if (eclass) *eclass = rcls;
 154         if (ecode) *ecode    = code;
 155 }
 156
 157 /* Return a UNIX errno from a dos error class, error number tuple */
 158
 159 static int cli_errno_from_dos(uint8 eclass, uint32 num)
 160 {
 161         if (eclass == ERRDOS) {
 162                 switch (num) {
 163                 case ERRbadfile: return ENOENT;
 164                 case ERRbadpath: return ENOTDIR;
 165                 case ERRnoaccess: return EACCES;
 166                 case ERRfilexists: return EEXIST;
 167                 case ERRrename: return EEXIST;
 168                 case ERRbadshare: return EBUSY;
 169                 case ERRlock: return EBUSY;
 170                 case ERRinvalidname: return ENOENT;
 171                 case ERRnosuchshare: return ENODEV;
 172                 }
 173         }
 174
 175         if (eclass == ERRSRV) {
 176                 switch (num) {
 177                 case ERRbadpw: return EPERM;
 178                 case ERRaccess: return EACCES;
 179                 case ERRnoresource: return ENOMEM;
 180                 case ERRinvdevice: return ENODEV;
 181                 case ERRinvnetname: return ENODEV;
 182                 }
 183         }
 184
 185         /* for other cases */
 186         return EINVAL;
 187 }
 188
 189 /* Return a UNIX errno from a NT status code */
 190 static struct {
 191         NTSTATUS status;
 192         int error;
 193 } nt_errno_map[] = {
 194         {NT_STATUS_ACCESS_VIOLATION, EACCES},
 195         {NT_STATUS_NO_SUCH_FILE, ENOENT},
 196         {NT_STATUS_NO_SUCH_DEVICE, ENODEV},
 197         {NT_STATUS_INVALID_HANDLE, EBADF},
 198         {NT_STATUS_NO_MEMORY, ENOMEM},
 199         {NT_STATUS_ACCESS_DENIED, EACCES},
 200         {NT_STATUS_OBJECT_NAME_NOT_FOUND, ENOENT},
 201         {NT_STATUS_SHARING_VIOLATION, EBUSY},
 202         {NT_STATUS_OBJECT_PATH_INVALID, ENOTDIR},
 203         {NT_STATUS_OBJECT_NAME_COLLISION, EEXIST},
 204         {NT_STATUS_PATH_NOT_COVERED, ENOENT},
 205         {NT_STATUS(0), 0}
 206 };
 207
 208 static int cli_errno_from_nt(NTSTATUS status)
 209 {
 210         int i;
 211         DEBUG(10,("cli_errno_from_nt: 32 bit codes: code=%08x\n", NT_STATUS_V(status)));
 212
 213         /* Status codes without this bit set are not errors */
 214
 215         if (!(NT_STATUS_V(status) & 0xc0000000))
 216                 return 0;
 217
 218         for (i=0;nt_errno_map[i].error;i++) {
 219                 if (NT_STATUS_V(nt_errno_map[i].status) ==
 220                     NT_STATUS_V(status)) return nt_errno_map[i].error;
 221         }
 222
 223         /* for all other cases - a default code */
 224         return EINVAL;
 225 }
 226
 227 /* Return a UNIX errno appropriate for the error received in the last
 228    packet. */
 229
 230 int cli_errno(struct cli_state *cli)
 231 {
 232         NTSTATUS status;
 233
 234         if (cli_is_dos_error(cli)) {
 235                 uint8 eclass;
 236                 uint32 ecode;
 237
 238                 cli_dos_error(cli, &eclass, &ecode);
 239                 return cli_errno_from_dos(eclass, ecode);
 240         }
 241
 242         status = cli_nt_error(cli);
 243
 244         return cli_errno_from_nt(status);
 245 }
 246
 247 /* Return true if the last packet was in error */
 248
 249 BOOL cli_is_error(struct cli_state *cli)
 250 {
 251         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
 252
 253         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 254                 /* Return error is error bits are set */
 255                 rcls = IVAL(cli->inbuf, smb_rcls);
 256                 return (rcls & 0xF0000000) == 0xC0000000;
 257         }
 258
 259         /* Return error if error class in non-zero */
 260
 261         rcls = CVAL(cli->inbuf, smb_rcls);
 262         return rcls != 0;
 263 }
 264
 265 /* Return true if the last error was an NT error */
 266
 267 BOOL cli_is_nt_error(struct cli_state *cli)
 268 {
 269         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 270
 271         return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 272 }
 273
 274 /* Return true if the last error was a DOS error */
 275
 276 BOOL cli_is_dos_error(struct cli_state *cli)
 277 {
 278         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 279
 280         return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 281 }