source/libsmb/clierror.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    client error handling routines
   5    Copyright (C) Andrew Tridgell 1994-1998
   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 #define NO_SYSLOG
  23
  24 #include "includes.h"
  25
  26 /*****************************************************
  27  RAP error codes - a small start but will be extended.
  28 *******************************************************/
  29
  30 static const struct
  31 {
  32         int err;
  33         char *message;
  34 } rap_errmap[] = {
  35         {5,    "RAP5: User has insufficient privilege" },
  36         {50,   "RAP50: Not supported by server" },
  37         {65,   "RAP65: Access denied" },
  38         {86,   "RAP86: The specified password is invalid" },
  39         {2220, "RAP2220: Group does not exist" },
  40         {2221, "RAP2221: User does not exist" },
  41         {2226, "RAP2226: Operation only permitted on a Primary Domain Controller"  },
  42         {2237, "RAP2237: User is not in group" },
  43         {2242, "RAP2242: The password of this user has expired." },
  44         {2243, "RAP2243: The password of this user cannot change." },
  45         {2244, "RAP2244: This password cannot be used now (password history conflict)." },
  46         {2245, "RAP2245: The password is shorter than required." },
  47         {2246, "RAP2246: The password of this user is too recent to change."},
  48
  49         /* these really shouldn't be here ... */
  50         {0x80, "Not listening on called name"},
  51         {0x81, "Not listening for calling name"},
  52         {0x82, "Called name not present"},
  53         {0x83, "Called name present, but insufficient resources"},
  54
  55         {0, NULL}
  56 };
  57
  58 /****************************************************************************
  59   return a description of an SMB error
  60 ****************************************************************************/
  61 static char *cli_smb_errstr(struct cli_state *cli)
  62 {
  63         return smb_dos_errstr(cli->inbuf);
  64 }
  65
  66 /***************************************************************************
  67  Return an error message - either an NT error, SMB error or a RAP error.
  68  Note some of the NT errors are actually warnings or "informational" errors
  69  in which case they can be safely ignored.
  70 ****************************************************************************/
  71
  72 char *cli_errstr(struct cli_state *cli)
  73 {
  74         static fstring cli_error_message;
  75         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
  76         uint8 errclass;
  77         int i;
  78
  79         if (!cli->initialised) {
  80                 fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
  81                 return cli_error_message;
  82         }
  83
  84
  85         /* Case #1: RAP error */
  86         if (cli->rap_error) {
  87                 for (i = 0; rap_errmap[i].message != NULL; i++) {
  88                         if (rap_errmap[i].err == cli->rap_error) {
  89                                 return rap_errmap[i].message;
  90                         }
  91                 }
  92
  93                 slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
  94                         cli->rap_error);
  95
  96                 return cli_error_message;
  97         }
  98
  99         /* Case #2: 32-bit NT errors */
 100         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 101                 NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 102
 103                 return get_nt_error_msg(status);
 104         }
 105
 106         cli_dos_error(cli, &errclass, &errnum);
 107
 108         /* Case #3: SMB error */
 109
 110         return cli_smb_errstr(cli);
 111 }
 112
 113
 114 /* Return the 32-bit NT status code from the last packet */
 115 NTSTATUS cli_nt_error(struct cli_state *cli)
 116 {
 117         int flgs2 = SVAL(cli->inbuf,smb_flg2);
 118
 119         if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
 120                 int class  = CVAL(cli->inbuf,smb_rcls);
 121                 int code  = SVAL(cli->inbuf,smb_err);
 122                 return dos_to_ntstatus(class, code);
 123         }
 124
 125         return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
 126 }
 127
 128
 129 /* Return the DOS error from the last packet - an error class and an error
 130    code. */
 131 void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
 132 {
 133         int  flgs2;
 134         char rcls;
 135         int code;
 136
 137         if(!cli->initialised) return;
 138
 139         flgs2 = SVAL(cli->inbuf,smb_flg2);
 140
 141         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 142                 NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
 143                 ntstatus_to_dos(ntstatus, eclass, ecode);
 144                 return;
 145         }
 146
 147         rcls  = CVAL(cli->inbuf,smb_rcls);
 148         code  = SVAL(cli->inbuf,smb_err);
 149
 150         if (eclass) *eclass = rcls;
 151         if (ecode) *ecode    = code;
 152 }
 153
 154 /* Return a UNIX errno from a dos error class, error number tuple */
 155
 156 int cli_errno_from_dos(uint8 eclass, uint32 num)
 157 {
 158         if (eclass == ERRDOS) {
 159                 switch (num) {
 160                 case ERRbadfile: return ENOENT;
 161                 case ERRbadpath: return ENOTDIR;
 162                 case ERRnoaccess: return EACCES;
 163                 case ERRfilexists: return EEXIST;
 164                 case ERRrename: return EEXIST;
 165                 case ERRbadshare: return EBUSY;
 166                 case ERRlock: return EBUSY;
 167                 case ERRinvalidname: return ENOENT;
 168                 case ERRnosuchshare: return ENODEV;
 169                 }
 170         }
 171
 172         if (eclass == ERRSRV) {
 173                 switch (num) {
 174                 case ERRbadpw: return EPERM;
 175                 case ERRaccess: return EACCES;
 176                 case ERRnoresource: return ENOMEM;
 177                 case ERRinvdevice: return ENODEV;
 178                 case ERRinvnetname: return ENODEV;
 179                 }
 180         }
 181
 182         /* for other cases */
 183         return EINVAL;
 184 }
 185
 186 /* Return a UNIX errno from a NT status code */
 187 static struct {
 188         NTSTATUS status;
 189         int error;
 190 } nt_errno_map[] = {
 191         {NT_STATUS_ACCESS_VIOLATION, EACCES},
 192         {NT_STATUS_NO_SUCH_FILE, ENOENT},
 193         {NT_STATUS_NO_SUCH_DEVICE, ENODEV},
 194         {NT_STATUS_INVALID_HANDLE, EBADF},
 195         {NT_STATUS_NO_MEMORY, ENOMEM},
 196         {NT_STATUS_ACCESS_DENIED, EACCES},
 197         {NT_STATUS_OBJECT_NAME_NOT_FOUND, ENOENT},
 198         {NT_STATUS_SHARING_VIOLATION, EBUSY},
 199         {NT_STATUS_OBJECT_PATH_INVALID, ENOTDIR},
 200         {NT_STATUS_OBJECT_NAME_COLLISION, EEXIST},
 201         {NT_STATUS_PATH_NOT_COVERED, ENOENT},
 202         {NT_STATUS(0), 0}
 203 };
 204
 205 int cli_errno_from_nt(NTSTATUS status)
 206 {
 207         int i;
 208         DEBUG(10,("cli_errno_from_nt: 32 bit codes: code=%08x\n", NT_STATUS_V(status)));
 209
 210         /* Status codes without this bit set are not errors */
 211
 212         if (!(NT_STATUS_V(status) & 0xc0000000))
 213                 return 0;
 214
 215         for (i=0;nt_errno_map[i].error;i++) {
 216                 if (NT_STATUS_V(nt_errno_map[i].status) ==
 217                     NT_STATUS_V(status)) return nt_errno_map[i].error;
 218         }
 219
 220         /* for all other cases - a default code */
 221         return EINVAL;
 222 }
 223
 224 /* Return a UNIX errno appropriate for the error received in the last
 225    packet. */
 226
 227 int cli_errno(struct cli_state *cli)
 228 {
 229         NTSTATUS status;
 230
 231         if (cli_is_dos_error(cli)) {
 232                 uint8 eclass;
 233                 uint32 ecode;
 234
 235                 cli_dos_error(cli, &eclass, &ecode);
 236                 return cli_errno_from_dos(eclass, ecode);
 237         }
 238
 239         status = cli_nt_error(cli);
 240
 241         return cli_errno_from_nt(status);
 242 }
 243
 244 /* Return true if the last packet was in error */
 245
 246 BOOL cli_is_error(struct cli_state *cli)
 247 {
 248         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
 249
 250         if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
 251                 /* Return error is error bits are set */
 252                 rcls = IVAL(cli->inbuf, smb_rcls);
 253                 return (rcls & 0xF0000000) == 0xC0000000;
 254         }
 255
 256         /* Return error if error class in non-zero */
 257
 258         rcls = CVAL(cli->inbuf, smb_rcls);
 259         return rcls != 0;
 260 }
 261
 262 /* Return true if the last error was an NT error */
 263
 264 BOOL cli_is_nt_error(struct cli_state *cli)
 265 {
 266         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 267
 268         return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 269 }
 270
 271 /* Return true if the last error was a DOS error */
 272
 273 BOOL cli_is_dos_error(struct cli_state *cli)
 274 {
 275         uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
 276
 277         return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
 278 }