source3/smbd/mangle_hash.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Name mangling
   4    Copyright (C) Andrew Tridgell 1992-2002
   5    Copyright (C) Simo Sorce 2001
   6    Copyright (C) Andrew Bartlett 2002
   7    Copyright (C) Jeremy Allison 2007
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "system/filesys.h"
  25 #include "smbd/smbd.h"
  26 #include "smbd/globals.h"
  27 #include "mangle.h"
  28 #include "util_tdb.h"
  29 #include "lib/param/loadparm.h"
  30
  31 /* -------------------------------------------------------------------------- **
  32  * Other stuff...
  33  *
  34  * magic_char     - This is the magic char used for mangling.  It's
  35  *                  global.  There is a call to lp_mangling_char() in server.c
  36  *                  that is used to override the initial value.
  37  *
  38  * MANGLE_BASE    - This is the number of characters we use for name mangling.
  39  *
  40  * basechars      - The set characters used for name mangling.  This
  41  *                  is static (scope is this file only).
  42  *
  43  * mangle()       - Macro used to select a character from basechars (i.e.,
  44  *                  mangle(n) will return the nth digit, modulo MANGLE_BASE).
  45  *
  46  * chartest       - array 0..255.  The index range is the set of all possible
  47  *                  values of a byte.  For each byte value, the content is a
  48  *                  two nibble pair.  See BASECHAR_MASK below.
  49  *
  50  * ct_initialized - False until the chartest array has been initialized via
  51  *                  a call to init_chartest().
  52  *
  53  * BASECHAR_MASK  - Masks the upper nibble of a one-byte value.
  54  *
  55  * isbasecahr()   - Given a character, check the chartest array to see
  56  *                  if that character is in the basechars set.  This is
  57  *                  faster than using strchr_m().
  58  *
  59  */
  60
  61 static const char basechars[43]="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_-!@#$%";
  62 #define MANGLE_BASE       (sizeof(basechars)/sizeof(char)-1)
  63
  64 #define mangle(V) ((char)(basechars[(V) % MANGLE_BASE]))
  65 #define BASECHAR_MASK 0xf0
  66 #define isbasechar(C) ( (chartest[ ((C) & 0xff) ]) & BASECHAR_MASK )
  67
  68 /* -------------------------------------------------------------------- */
  69
  70
  71 /*******************************************************************
  72  Determine if a character is valid in a 8.3 name.
  73 ********************************************************************/
  74
  75 static const uint32_t valid_table[] = {
  76         0x00000000,0x2fff7bfa,0xefffffff,0xefffffff,0x00000001,0x0fffffee,
  77         0xffffffff,0xffffffff,0x00000000,0x00000000,0x00000000,0x01000000,
  78         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  79         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  80         0x00000000,0x00000000,0x00000000,0x00000000,0xfffe0000,0xfffe03fb,
  81         0x000003ff,0x00000000,0xffff0002,0xffffffff,0x0002ffff,0x00000000,
  82         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  83         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  84         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  85         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  86         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  87         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  88         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  89         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  90         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  91         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  92         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  93         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  94         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  95         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  96         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  97         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  98         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
  99         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 100         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 101         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 102         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 103         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 104         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 105         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 106         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 107         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 108         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 109         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 110         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 111         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 112         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 113         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 114         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 115         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 116         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 117         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 118         0x00000000,0x00000000,0x00000000,0x00000000,0x33210000,0x080d0063,
 119         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 120         0x00400008,0x00000802,0x00000000,0x03ff03ff,0x000f0000,0x00000000,
 121         0x00140000,0x00000000,0xe402098d,0x20305fa1,0x00040000,0x00000cc3,
 122         0x000000cc,0x80000020,0x00000000,0x00000000,0x00040000,0x00000000,
 123         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 124         0x00000000,0x00000000,0x00000000,0x000fffff,0x00000000,0x00000000,
 125         0x00000000,0x00000000,0x3999900f,0x99999939,0x00000804,0x00000000,
 126         0x00000000,0x300c0003,0x0000c8c0,0x00008000,0x00000060,0x00000000,
 127         0x00000005,0x0000a400,0x00000000,0x00000000,0x00000000,0x00000000,
 128         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 129         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 130         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 131         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 132         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 133         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 134         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 135         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 136         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 137         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 138         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 139         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 140         0xa03fffef,0x00000000,0xfffffffe,0xffffffff,0x781fffff,0xfffffffe,
 141         0xffffffff,0x787fffff,0x00000000,0x00000000,0x00000000,0x00000000,
 142         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x02060000,
 143         0x00000000,0x00000000,0x00000000,0x000001f0,0x00000000,0x00000000,
 144         0x01102008,0x084008cc,0x00822600,0x78000000,0x7000c000,0x00000002,
 145         0x00002010,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 146         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 147         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 148         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 149         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 150         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 151         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 152         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 153         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 154         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 155         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 156         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 157         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 158         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 159         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 160         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 161         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 162         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 163         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 164         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 165         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 166         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 167         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 168         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 169         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 170         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 171         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 172         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 173         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 174         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 175         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 176         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 177         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 178         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 179         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 180         0x43f36f8b,0x9b462542,0xe3e0e82c,0x400a0004,0xdb365f65,0x04497977,
 181         0xe3f0ecd7,0x18c5603a,0x3403e60b,0x37518000,0x7eebe0c8,0x98698200,
 182         0x2d56ad48,0x8060e803,0xad93661c,0xc568c03a,0xc656aa60,0x02403f7e,
 183         0x146183cd,0x21751020,0x07122021,0x40bc3000,0x4562a624,0x0a3060a8,
 184         0x85740217,0x9c840402,0x14157ffb,0x11e27f34,0x22efb665,0x60ff1f75,
 185         0x38403a70,0x676336c3,0x20b24dd9,0x0fc946b0,0x4850bc98,0xa03f8638,
 186         0x98162388,0x5232be49,0xeba422ab,0xc72c00dd,0x26e1a1e7,0x8f0a841b,
 187         0x559e27eb,0x89bfc241,0x85480014,0x084d6361,0xaad07f0c,0x05cfff3e,
 188         0xa803ff1a,0x7b407a41,0x80024745,0x38eb0500,0x1005dc51,0x710c9b34,
 189         0x01000397,0xa4046366,0x005180d0,0x430ac000,0x30c89071,0x58000008,
 190         0xf7000ed9,0x00415f80,0x941000b0,0x62800018,0x09d00240,0x01568200,
 191         0x08015004,0x05101d10,0x001084c1,0x10504025,0x4d8a410f,0xa60d4009,
 192         0x914cab19,0x098121c0,0x0203c485,0x80000672,0x00080b04,0x0009141d,
 193         0x905c49c9,0x16900009,0x22200c65,0x24338412,0x47960c03,0x42250a04,
 194         0xd0880028,0x4f0c4900,0xd3aa14a2,0x3e87d830,0x1f618e04,0x41867ea4,
 195         0x2dbbc390,0x211857ad,0x2a48241e,0x4e041138,0x161b0a40,0x88400d60,
 196         0x9502020a,0x10608221,0x04000243,0x80001444,0x0c040000,0x70000000,
 197         0x00c11a06,0x0c00024a,0x00401a00,0x40451404,0xbdf30029,0x052b0a78,
 198         0xbfa0bba9,0x8379407c,0xe91d12fd,0xc5695bf6,0x444aeff6,0xff022115,
 199         0x402bed63,0x0242d033,0x00131000,0x5dca1b42,0x020000a0,0x2c61a703,
 200         0x8ff24880,0x00000284,0x100d5804,0x0048b200,0x20011894,0x37805004,
 201         0x684d3200,0x68be49ea,0x2e42184c,0x21c9a820,0x80b050b9,0xff7c001e,
 202         0x14e0849a,0x01e028c1,0xac49870e,0xdddb130f,0x89fbbe1a,0x51b2a2e2,
 203         0x32ca5522,0x928b3ec6,0x438f1dbf,0x32986703,0x73c03028,0xa9230811,
 204         0x3a65c000,0x04028fe3,0xa6252c4e,0x00a1bf3d,0x8cd43e3a,0x317c06c9,
 205         0xd52a00e0,0x0edf018b,0x8c22e34b,0xf0911183,0xa7287d94,0x40fbc9ac,
 206         0x07534484,0x44445a90,0x00013fc8,0xf5d40048,0xec5f7701,0x891dc442,
 207         0x49286b83,0xd2424109,0x59fe061d,0x3a221840,0x3b9fb7e4,0xc0eaf003,
 208         0x82021386,0xe4008980,0x10a1b200,0x0cc44b80,0x8944d309,0x48341faf,
 209         0x0c458259,0x0470420a,0x10c8a040,0x44503140,0x01004004,0x05408281,
 210         0x642c0108,0x1a056a30,0x051460a6,0x645690cf,0x31000021,0xcbf09c18,
 211         0x63e2e120,0x01b5104c,0x9a83538c,0x3281b8b2,0x0a84987a,0x0c0233e7,
 212         0xd038d6cd,0x9872e1b1,0xe2848a1e,0x0459c3f4,0x23c2439a,0xd3144845,
 213         0x36400292,0xffbd0241,0xe8f0eb09,0xa5d27dc0,0xd24bc242,0xd0afa47f,
 214         0x34a11aa0,0x0bd88247,0x651bc453,0xc83ad294,0x40c8001e,0x33140e06,
 215         0xb21f615f,0xc0d00088,0xa898a02a,0x166ba1c5,0x85b4af50,0x0604c08b,
 216         0x1e04f933,0xa251056e,0x76380400,0x73b8ed07,0x19324406,0xc8164081,
 217         0x63097c8a,0xaa042984,0xca9c1c24,0x27614e0e,0x830009d0,0xc10c0846,
 218         0x10816011,0x0908540d,0xcc0a000e,0x0c000514,0xa0440430,0x6784008b,
 219         0x8a195288,0x8b18865e,0x41602e59,0x9cbe8c10,0x895c6861,0x00089800,
 220         0x089a8100,0xc1900018,0xf4a14007,0x640d8505,0x0e4d314e,0xff0a4806,
 221         0x2ea81632,0x000b852e,0xca841810,0x696c0e20,0x16000032,0x0390d658,
 222         0x1a6851a0,0x11249000,0x432698e1,0x1fae5d52,0xae280fa0,0x5700fafb,
 223         0x99406408,0xc044c880,0xb1419005,0xa4c48424,0x603a1a34,0xc1949000,
 224         0x003a8246,0xc106180d,0x99100022,0x1511e050,0x00824157,0x022a041a,
 225         0x8930004f,0x446ad813,0xed228aa2,0x400511c0,0x01021000,0x31018808,
 226         0x02044620,0x0f08f800,0xa2008900,0x22020000,0x16108210,0x10400042,
 227         0x126052c0,0x200052f4,0x82308510,0x42021100,0x80b5430a,0xda2070e1,
 228         0x08012040,0xfc653500,0xab0419c1,0x62140286,0x00440087,0x42469085,
 229         0x0a85405c,0x33803207,0xb8c00400,0xc0d0ce30,0x0080c030,0x0da50508,
 230         0x00400a90,0x280c0200,0x40446705,0x41226429,0x000002e8,0x847c4664,
 231         0xde200002,0x4049861d,0xc0000a08,0x20010084,0x10108400,0x01c742cd,
 232         0xd52a703a,0x1d8f9968,0x3e12be50,0x81d9aef5,0x2412cec4,0x732e0828,
 233         0x4b3424ac,0xd41d020c,0x80002a02,0x08110097,0x114411c4,0x7d451786,
 234         0x5e4949dd,0x87914040,0xd8c4254c,0x491444ba,0xc8001b92,0x15800271,
 235         0x0c0000c1,0xc200096a,0x40024800,0xba493021,0x1c802080,0x1008e2ac,
 236         0x00341004,0x841400e3,0x20004020,0x14149810,0x04aa70c2,0x54208688,
 237         0x04130c62,0x20109180,0x02064082,0x54011c40,0xe4e90383,0x84802125,
 238         0x2810e433,0xe60944c0,0x81260a03,0x080112da,0x97906901,0xf8864001,
 239         0x0081e24d,0xa6510a0e,0x81ec011a,0x8441c600,0xb62eadb8,0x8741acef,
 240         0x4b028d54,0x02681161,0x2057bb60,0x043350a0,0xf7b4a8c0,0x01122402,
 241         0x20009ad3,0x00c82271,0x809e2081,0xe1800c8a,0x8151b009,0x40281031,
 242         0x89a52a0e,0x620e69b6,0xd1444425,0x4d548085,0x1fb12c75,0x862dd807,
 243         0x5841d97c,0x226e414e,0x9e088200,0xedb7f80d,0x75668c80,0x08149313,
 244         0xc8040e32,0x6ea6484e,0x66742c4a,0xba0126c0,0x185dd70c,0x00000000,
 245         0x00000000,0x00000000,0x00000000,0x05400000,0x813370a0,0x03a54f81,
 246         0x641055ec,0x2344c31a,0x00341462,0x1a090a43,0x13a5187b,0xa8480102,
 247         0xc5440440,0xe2dd8106,0x2d481af0,0x0416b626,0x6e405058,0x31128032,
 248         0x0c0007e4,0x420a8208,0x803b4840,0x87134860,0x3428850d,0xe5290319,
 249         0x870a2345,0x5c1825a9,0xd9c577a6,0x03e85e00,0xa7000081,0x41c6cd54,
 250         0xa2042800,0x2b0ab860,0xda9e0020,0x0e1a08ea,0x11c0427e,0x03768908,
 251         0x01058621,0x98a80004,0xc44846a0,0x20220d05,0x914854a2,0x28d78a01,
 252         0x00087898,0x31221605,0x08804340,0x06a2fa4e,0x92110814,0x9b142002,
 253         0x16432e52,0x90105000,0x85ba0041,0x20203042,0x07a84f0b,0x40802f08,
 254         0x1a930591,0x0601df50,0x3021a202,0x4e800630,0x04c80cc4,0x8001a004,
 255         0xd4316000,0x0a020880,0x00281c00,0x00418e18,0xca106ad0,0x4b00f210,
 256         0x1506274d,0x88900220,0x82a85a00,0x81504549,0x80002004,0x2c088804,
 257         0x000508d1,0x4ac48001,0x0062e0a0,0x0a42008e,0x6a8c3055,0xe0a5090e,
 258         0x42c42906,0x80b34814,0xb330803e,0x733c0102,0x700d1494,0x09400c20,
 259         0xc040301a,0xc094a451,0x05c88dca,0xa40c96c2,0x34040001,0x011000c8,
 260         0xa9cd550d,0x1cda2428,0x48370142,0x120f7a4d,0x452a32b4,0xd20531fb,
 261         0xdc44b894,0x45ca68d7,0x2ed15097,0x42081943,0x9d48d202,0xa0979840,
 262         0x064d5409,0x00000000,0x00000000,0x00000000,0x00000000,0x84800000,
 263         0x04215542,0x17001c06,0x61107624,0xb9ddff87,0x5c0a659f,0x3c11245d,
 264         0x005dadb0,0x00000000,0x00000000,0x00db28d0,0x02000422,0x44080108,
 265         0xac409804,0x90288d0a,0xe0018700,0x00310400,0x82211794,0x10540019,
 266         0x021a2cb2,0x40039c02,0x8804bd60,0x7900080c,0xba3c1628,0xcb088640,
 267         0x90807274,0x0000001e,0xd8000000,0x9c87e188,0x04124034,0x2791ae64,
 268         0xe6fbe86b,0x5366408f,0x537feea6,0xb5e4e3ab,0x0002869f,0x01228548,
 269         0x48004402,0x20a02116,0x02240004,0x00052080,0x01547e00,0x01ac162c,
 270         0x10852a84,0x05308c14,0xfdc3fbc3,0x906060fa,0x40336440,0x96901200,
 271         0x4e834b31,0x418200d4,0x1d6a0129,0x02802080,0x02ad8000,0x9f0c2691,
 272         0x67018044,0x0c24d96f,0x18d02910,0x50215001,0x04d01000,0x02017090,
 273         0x61c30148,0x01000132,0x07190088,0x05620802,0x4c0e0132,0xf0a10405,
 274         0x00000002,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 275         0x00000000,0x00800000,0x035e8e8d,0x5a0421bd,0x11703488,0x00000026,
 276         0x10000000,0x8804c502,0xf801b815,0x25ed147c,0x3bb0ed60,0x1bd78589,
 277         0x1a627af3,0x0ac50d0c,0x524ae5d1,0x6b0d0490,0x5266a35c,0x16122b57,
 278         0x1101a872,0x00182949,0x10080948,0x886c6000,0x058f916e,0x39903012,
 279         0x49b0f840,0x001b88a0,0x00000000,0x00428500,0x98000058,0x7014ea04,
 280         0x611d1628,0x60005193,0x00a71a24,0x00000000,0x43c00000,0x10187120,
 281         0xa9270172,0x89066004,0x020cc022,0x40810900,0x8ca0602d,0x00000e34,
 282         0x00000000,0x11012100,0xd31a8011,0x0892ec4c,0x85000040,0x1806c7ac,
 283         0x0512e03e,0x00348000,0x80cec008,0x0a126d01,0x08568641,0x0027011e,
 284         0x083d3751,0x4e05e032,0x048401c0,0x01400081,0x00000000,0x00000000,
 285         0x00000000,0x00591aa0,0x882443c8,0xc8001d48,0x72030152,0x04059813,
 286         0x04008280,0x0d148a10,0x02088056,0x2704a040,0x4e000000,0x00000000,
 287         0x00000000,0xa3200000,0xa0ae1902,0xdf002660,0x7b17f010,0x3ad08121,
 288         0x00284180,0x48001003,0x8014cc00,0x00c414cf,0x30202000,0x00000001,
 289         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 290         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 291         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 292         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 293         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 294         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 295         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 296         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 297         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 298         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 299         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 300         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 301         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 302         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 303         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 304         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 305         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 306         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 307         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 308         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 309         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 310         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 311         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 312         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 313         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 314         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 315         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 316         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 317         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 318         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 319         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 320         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 321         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 322         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 323         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 324         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 325         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 326         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 327         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 328         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 329         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 330         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 331         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 332         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 333         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 334         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 335         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 336         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 337         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 338         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 339         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 340         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 341         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 342         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 343         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 344         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 345         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 346         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 347         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 348         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 349         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 350         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 351         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 352         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 353         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 354         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 355         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 356         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 357         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 358         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 359         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 360         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 361         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 362         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 363         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 364         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 365         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 366         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 367         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 368         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 369         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 370         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 371         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 372         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 373         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 374         0x00000000,0x00000000,0x00000000,0x00000000,0xffffffff,0xffffffff,
 375         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 376         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 377         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 378         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 379         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 380         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 381         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 382         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 383         0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,
 384         0xffffffff,0xffffffff,0x00ffffff,0x00000000,0x00000000,0x00000000,
 385         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 386         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 387         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 388         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 389         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 390         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 391         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 392         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 393         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 394         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 395         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 396         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 397         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 398         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 399         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 400         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 401         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 402         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 403         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 404         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 405         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 406         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 407         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x000f0000,
 408         0x00000000,0x00000200,0x00000000,0x00000000,0x00000000,0x00000000,
 409         0x10000000,0x00000000,0xffffc000,0x00003fff,0x00000000,0x00000000,
 410         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 411         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 412         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 413         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 414         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 415         0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,
 416         0xfffffffe,0xffffffff,0x7fffffff,0xfffffffe,0xffffffff,0x00000000,
 417         0x00000000,0x0000003f
 418 };
 419
 420 #if 0
 421 /*
 422  * The following program regenerates the good old valid.dat. Try it
 423  * yourself :-)
 424  */
 425 int main(void)
 426 {
 427         int i;
 428         for (i=0; i<65536; i++) {
 429                 char c = (valid_table[i/32] & (1<<(i%32))) ? 1 : 0;
 430                 write(1, &c, 1);
 431         }
 432 }
 433 #endif
 434
 435 static bool isvalid83_w(smb_ucs2_t c)
 436 {
 437         uint16_t idx = SVAL(&c, 0);
 438         return (valid_table[idx/32] & (1 << (idx%32))) != 0;
 439 }
 440
 441 static NTSTATUS has_valid_83_chars(const smb_ucs2_t *s, bool allow_wildcards)
 442 {
 443         if (!*s) {
 444                 return NT_STATUS_INVALID_PARAMETER;
 445         }
 446
 447         if (!allow_wildcards && ms_has_wild_w(s)) {
 448                 return NT_STATUS_UNSUCCESSFUL;
 449         }
 450
 451         while (*s) {
 452                 if(!isvalid83_w(*s)) {
 453                         return NT_STATUS_UNSUCCESSFUL;
 454                 }
 455                 s++;
 456         }
 457
 458         return NT_STATUS_OK;
 459 }
 460
 461 static NTSTATUS has_illegal_chars(const smb_ucs2_t *s, bool allow_wildcards)
 462 {
 463         if (!allow_wildcards && ms_has_wild_w(s)) {
 464                 return NT_STATUS_UNSUCCESSFUL;
 465         }
 466
 467         while (*s) {
 468                 if (*s <= 0x1f) {
 469                         /* Control characters. */
 470                         return NT_STATUS_UNSUCCESSFUL;
 471                 }
 472                 switch(*s) {
 473                         case UCS2_CHAR('\\'):
 474                         case UCS2_CHAR('/'):
 475                         case UCS2_CHAR('|'):
 476                         case UCS2_CHAR(':'):
 477                                 return NT_STATUS_UNSUCCESSFUL;
 478                 }
 479                 s++;
 480         }
 481
 482         return NT_STATUS_OK;
 483 }
 484
 485 /*******************************************************************
 486  Duplicate string.
 487 ********************************************************************/
 488
 489 static smb_ucs2_t *strdup_w(const smb_ucs2_t *src)
 490 {
 491         smb_ucs2_t *dest;
 492         size_t len = strlen_w(src);
 493         dest = SMB_MALLOC_ARRAY(smb_ucs2_t, len + 1);
 494         if (!dest) {
 495                 DEBUG(0,("strdup_w: out of memory!\n"));
 496                 return NULL;
 497         }
 498
 499         memcpy(dest, src, len * sizeof(smb_ucs2_t));
 500         dest[len] = 0;
 501         return dest;
 502 }
 503
 504 /* return False if something fail and
 505  * return 2 alloced unicode strings that contain prefix and extension
 506  */
 507
 508 static NTSTATUS mangle_get_prefix(const smb_ucs2_t *ucs2_string, smb_ucs2_t **prefix,
 509                 smb_ucs2_t **extension, bool allow_wildcards)
 510 {
 511         size_t ext_len;
 512         smb_ucs2_t *p;
 513
 514         *extension = 0;
 515         *prefix = strdup_w(ucs2_string);
 516         if (!*prefix) {
 517                 return NT_STATUS_NO_MEMORY;
 518         }
 519         if ((p = strrchr_w(*prefix, UCS2_CHAR('.')))) {
 520                 ext_len = strlen_w(p+1);
 521                 if ((ext_len > 0) && (ext_len < 4) && (p != *prefix) &&
 522                     (NT_STATUS_IS_OK(has_valid_83_chars(p+1,allow_wildcards)))) /* check extension */ {
 523                         *p = 0;
 524                         *extension = strdup_w(p+1);
 525                         if (!*extension) {
 526                                 SAFE_FREE(*prefix);
 527                                 return NT_STATUS_NO_MEMORY;
 528                         }
 529                 }
 530         }
 531         return NT_STATUS_OK;
 532 }
 533
 534 /* ************************************************************************** **
 535  * Return NT_STATUS_UNSUCCESSFUL if a name is a special msdos reserved name.
 536  * or contains illegal characters.
 537  *
 538  *  Input:  fname - String containing the name to be tested.
 539  *
 540  *  Output: NT_STATUS_UNSUCCESSFUL, if the condition above is true.
 541  *
 542  *  Notes:  This is a static function called by is_8_3(), below.
 543  *
 544  * ************************************************************************** **
 545  */
 546
 547 static NTSTATUS is_valid_name(const smb_ucs2_t *fname, bool allow_wildcards, bool only_8_3)
 548 {
 549         smb_ucs2_t *str, *p;
 550         size_t num_ucs2_chars;
 551         NTSTATUS ret = NT_STATUS_OK;
 552
 553         if (!fname || !*fname)
 554                 return NT_STATUS_INVALID_PARAMETER;
 555
 556         /* . and .. are valid names. */
 557         if (strcmp_wa(fname, ".")==0 || strcmp_wa(fname, "..")==0)
 558                 return NT_STATUS_OK;
 559
 560         if (only_8_3) {
 561                 ret = has_valid_83_chars(fname, allow_wildcards);
 562                 if (!NT_STATUS_IS_OK(ret))
 563                         return ret;
 564         }
 565
 566         ret = has_illegal_chars(fname, allow_wildcards);
 567         if (!NT_STATUS_IS_OK(ret))
 568                 return ret;
 569
 570         /* Name can't end in '.' or ' ' */
 571         num_ucs2_chars = strlen_w(fname);
 572         if (fname[num_ucs2_chars-1] == UCS2_CHAR('.') || fname[num_ucs2_chars-1] == UCS2_CHAR(' ')) {
 573                 return NT_STATUS_UNSUCCESSFUL;
 574         }
 575
 576         str = strdup_w(fname);
 577
 578         /* Truncate copy after the first dot. */
 579         p = strchr_w(str, UCS2_CHAR('.'));
 580         if (p) {
 581                 *p = 0;
 582         }
 583
 584         strupper_w(str);
 585         p = &str[1];
 586
 587         switch(str[0])
 588         {
 589         case UCS2_CHAR('A'):
 590                 if(strcmp_wa(p, "UX") == 0)
 591                         ret = NT_STATUS_UNSUCCESSFUL;
 592                 break;
 593         case UCS2_CHAR('C'):
 594                 if((strcmp_wa(p, "LOCK$") == 0)
 595                 || (strcmp_wa(p, "ON") == 0)
 596                 || (strcmp_wa(p, "OM1") == 0)
 597                 || (strcmp_wa(p, "OM2") == 0)
 598                 || (strcmp_wa(p, "OM3") == 0)
 599                 || (strcmp_wa(p, "OM4") == 0)
 600                 )
 601                         ret = NT_STATUS_UNSUCCESSFUL;
 602                 break;
 603         case UCS2_CHAR('L'):
 604                 if((strcmp_wa(p, "PT1") == 0)
 605                 || (strcmp_wa(p, "PT2") == 0)
 606                 || (strcmp_wa(p, "PT3") == 0)
 607                 )
 608                         ret = NT_STATUS_UNSUCCESSFUL;
 609                 break;
 610         case UCS2_CHAR('N'):
 611                 if(strcmp_wa(p, "UL") == 0)
 612                         ret = NT_STATUS_UNSUCCESSFUL;
 613                 break;
 614         case UCS2_CHAR('P'):
 615                 if(strcmp_wa(p, "RN") == 0)
 616                         ret = NT_STATUS_UNSUCCESSFUL;
 617                 break;
 618         default:
 619                 break;
 620         }
 621
 622         SAFE_FREE(str);
 623         return ret;
 624 }
 625
 626 static NTSTATUS is_8_3_w(const smb_ucs2_t *fname, bool allow_wildcards)
 627 {
 628         smb_ucs2_t *pref = 0, *ext = 0;
 629         size_t plen;
 630         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 631
 632         if (!fname || !*fname)
 633                 return NT_STATUS_INVALID_PARAMETER;
 634
 635         if (strlen_w(fname) > 12)
 636                 return NT_STATUS_UNSUCCESSFUL;
 637
 638         if (strcmp_wa(fname, ".") == 0 || strcmp_wa(fname, "..") == 0)
 639                 return NT_STATUS_OK;
 640
 641         /* Name cannot start with '.' */
 642         if (*fname == UCS2_CHAR('.'))
 643                 return NT_STATUS_UNSUCCESSFUL;
 644
 645         if (!NT_STATUS_IS_OK(is_valid_name(fname, allow_wildcards, True)))
 646                 goto done;
 647
 648         if (!NT_STATUS_IS_OK(mangle_get_prefix(fname, &pref, &ext, allow_wildcards)))
 649                 goto done;
 650         plen = strlen_w(pref);
 651
 652         if (strchr_wa(pref, '.'))
 653                 goto done;
 654         if (plen < 1 || plen > 8)
 655                 goto done;
 656         if (ext && (strlen_w(ext) > 3))
 657                 goto done;
 658
 659         ret = NT_STATUS_OK;
 660
 661 done:
 662         SAFE_FREE(pref);
 663         SAFE_FREE(ext);
 664         return ret;
 665 }
 666
 667 static bool is_8_3(const char *fname, bool check_case, bool allow_wildcards,
 668                    const struct share_params *p)
 669 {
 670         const char *f;
 671         smb_ucs2_t *ucs2name;
 672         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 673         size_t size;
 674
 675         if (!fname || !*fname)
 676                 return False;
 677         if ((f = strrchr(fname, '/')) == NULL)
 678                 f = fname;
 679         else
 680                 f++;
 681
 682         if (strlen(f) > 12)
 683                 return False;
 684
 685         if (!push_ucs2_talloc(NULL, &ucs2name, f, &size)) {
 686                 DEBUG(0,("is_8_3: internal error push_ucs2_talloc() failed!\n"));
 687                 goto done;
 688         }
 689
 690         ret = is_8_3_w(ucs2name, allow_wildcards);
 691
 692 done:
 693         TALLOC_FREE(ucs2name);
 694
 695         if (!NT_STATUS_IS_OK(ret)) {
 696                 return False;
 697         }
 698
 699         return True;
 700 }
 701
 702 /* -------------------------------------------------------------------------- **
 703  * Functions...
 704  */
 705
 706 /* ************************************************************************** **
 707  * Initialize the static character test array.
 708  *
 709  *  Input:  none
 710  *
 711  *  Output: none
 712  *
 713  *  Notes:  This function changes (loads) the contents of the <chartest>
 714  *          array.  The scope of <chartest> is this file.
 715  *
 716  * ************************************************************************** **
 717  */
 718
 719 static void init_chartest( void )
 720 {
 721         const unsigned char *s;
 722
 723         chartest = SMB_MALLOC_ARRAY(unsigned char, 256);
 724
 725         SMB_ASSERT(chartest != NULL);
 726         memset(chartest, '\0', 256);
 727
 728         for( s = (const unsigned char *)basechars; *s; s++ ) {
 729                 chartest[*s] |= BASECHAR_MASK;
 730         }
 731 }
 732
 733 /* ************************************************************************** **
 734  * Return True if the name *could be* a mangled name.
 735  *
 736  *  Input:  s - A path name - in UNIX pathname format.
 737  *
 738  *  Output: True if the name matches the pattern described below in the
 739  *          notes, else False.
 740  *
 741  *  Notes:  The input name is *not* tested for 8.3 compliance.  This must be
 742  *          done separately.  This function returns true if the name contains
 743  *          a magic character followed by excactly two characters from the
 744  *          basechars list (above), which in turn are followed either by the
 745  *          nul (end of string) byte or a dot (extension) or by a '/' (end of
 746  *          a directory name).
 747  *
 748  * ************************************************************************** **
 749  */
 750
 751 static bool is_mangled(const char *s, const struct share_params *p)
 752 {
 753         char *magic;
 754         char magic_char;
 755
 756         magic_char = lp_mangling_char(p);
 757
 758         if (chartest == NULL) {
 759                 init_chartest();
 760         }
 761
 762         magic = strchr_m( s, magic_char );
 763         while( magic && magic[1] && magic[2] ) {         /* 3 chars, 1st is magic. */
 764                 if( ('.' == magic[3] || '/' == magic[3] || !(magic[3]))          /* Ends with '.' or nul or '/' ?  */
 765                                 && isbasechar( toupper_m(magic[1]) )           /* is 2nd char basechar?  */
 766                                 && isbasechar( toupper_m(magic[2]) ) )         /* is 3rd char basechar?  */
 767                         return( True );                           /* If all above, then true, */
 768                 magic = strchr_m( magic+1, magic_char );      /*    else seek next magic. */
 769         }
 770         return( False );
 771 }
 772
 773 /***************************************************************************
 774  Initializes or clears the mangled cache.
 775 ***************************************************************************/
 776
 777 static void mangle_reset( void )
 778 {
 779         /* We could close and re-open the tdb here... should we ? The old code did
 780            the equivalent... JRA. */
 781 }
 782
 783 /***************************************************************************
 784  Add a mangled name into the cache.
 785  If the extension of the raw name maps directly to the
 786  extension of the mangled name, then we'll store both names
 787  *without* extensions.  That way, we can provide consistent
 788  reverse mangling for all names that match.  The test here is
 789  a bit more careful than the one done in earlier versions of
 790  mangle.c:
 791
 792     - the extension must exist on the raw name,
 793     - it must be all lower case
 794     - it must match the mangled extension (to prove that no
 795       mangling occurred).
 796   crh 07-Apr-1998
 797 **************************************************************************/
 798
 799 static void cache_mangled_name( const char mangled_name[13],
 800                                 const char *raw_name )
 801 {
 802         TDB_DATA data_val;
 803         char mangled_name_key[13];
 804         char *s1 = NULL;
 805         char *s2 = NULL;
 806
 807         /* If the cache isn't initialized, give up. */
 808         if( !tdb_mangled_cache )
 809                 return;
 810
 811         /* Init the string lengths. */
 812         strlcpy(mangled_name_key, mangled_name, sizeof(mangled_name_key));
 813
 814         /* See if the extensions are unmangled.  If so, store the entry
 815          * without the extension, thus creating a "group" reverse map.
 816          */
 817         s1 = strrchr( mangled_name_key, '.' );
 818         if( s1 && (s2 = strrchr( raw_name, '.' )) ) {
 819                 size_t i = 1;
 820                 while( s1[i] && (tolower_m( s1[i] ) == s2[i]) )
 821                         i++;
 822                 if( !s1[i] && !s2[i] ) {
 823                         /* Truncate at the '.' */
 824                         *s1 = '\0';
 825                         /*
 826                          * DANGER WILL ROBINSON - this
 827                          * is changing a const string via
 828                          * an aliased pointer ! Remember to
 829                          * put it back once we've used it.
 830                          * JRA
 831                          */
 832                         *s2 = '\0';
 833                 }
 834         }
 835
 836         /* Allocate a new cache entry.  If the allocation fails, just return. */
 837         data_val = string_term_tdb_data(raw_name);
 838         if (tdb_store_bystring(tdb_mangled_cache, mangled_name_key, data_val, TDB_REPLACE) != 0) {
 839                 DEBUG(0,("cache_mangled_name: Error storing entry %s -> %s\n", mangled_name_key, raw_name));
 840         } else {
 841                 DEBUG(5,("cache_mangled_name: Stored entry %s -> %s\n", mangled_name_key, raw_name));
 842         }
 843         /* Restore the change we made to the const string. */
 844         if (s2) {
 845                 *s2 = '.';
 846         }
 847 }
 848
 849 /* ************************************************************************** **
 850  * Check for a name on the mangled name stack
 851  *
 852  *  Input:  s - Input *and* output string buffer.
 853  *          maxlen - space in i/o string buffer.
 854  *  Output: True if the name was found in the cache, else False.
 855  *
 856  *  Notes:  If a reverse map is found, the function will overwrite the string
 857  *          space indicated by the input pointer <s>.  This is frightening.
 858  *          It should be rewritten to return NULL if the long name was not
 859  *          found, and a pointer to the long name if it was found.
 860  *
 861  * ************************************************************************** **
 862  */
 863
 864 static bool lookup_name_from_8_3(TALLOC_CTX *ctx,
 865                                 const char *in,
 866                                 char **out, /* talloced on the given context. */
 867                                 const struct share_params *p)
 868 {
 869         TDB_DATA data_val;
 870         char *saved_ext = NULL;
 871         char *s = talloc_strdup(ctx, in);
 872
 873         /* If the cache isn't initialized, give up. */
 874         if(!s || !tdb_mangled_cache ) {
 875                 TALLOC_FREE(s);
 876                 return False;
 877         }
 878
 879         data_val = tdb_fetch_bystring(tdb_mangled_cache, s);
 880
 881         /* If we didn't find the name *with* the extension, try without. */
 882         if(data_val.dptr == NULL || data_val.dsize == 0) {
 883                 char *ext_start = strrchr( s, '.' );
 884                 if( ext_start ) {
 885                         if((saved_ext = talloc_strdup(ctx,ext_start)) == NULL) {
 886                                 TALLOC_FREE(s);
 887                                 return False;
 888                         }
 889
 890                         *ext_start = '\0';
 891                         data_val = tdb_fetch_bystring(tdb_mangled_cache, s);
 892                         /*
 893                          * At this point s is the name without the
 894                          * extension. We re-add the extension if saved_ext
 895                          * is not null, before freeing saved_ext.
 896                          */
 897                 }
 898         }
 899
 900         /* Okay, if we haven't found it we're done. */
 901         if(data_val.dptr == NULL || data_val.dsize == 0) {
 902                 TALLOC_FREE(saved_ext);
 903                 TALLOC_FREE(s);
 904                 return False;
 905         }
 906
 907         /* If we *did* find it, we need to talloc it on the given ctx. */
 908         if (saved_ext) {
 909                 *out = talloc_asprintf(ctx, "%s%s",
 910                                         (char *)data_val.dptr,
 911                                         saved_ext);
 912         } else {
 913                 *out = talloc_strdup(ctx, (char *)data_val.dptr);
 914         }
 915
 916         TALLOC_FREE(s);
 917         TALLOC_FREE(saved_ext);
 918         SAFE_FREE(data_val.dptr);
 919
 920         return *out ? True : False;
 921 }
 922
 923 /**
 924  Check if a string is in "normal" case.
 925 **/
 926
 927 static bool strisnormal(const char *s, int case_default)
 928 {
 929         if (case_default == CASE_UPPER)
 930                 return(!strhaslower(s));
 931
 932         return(!strhasupper(s));
 933 }
 934
 935
 936 /*****************************************************************************
 937  Do the actual mangling to 8.3 format.
 938 *****************************************************************************/
 939
 940 static bool to_8_3(char magic_char, const char *in, char out[13], int default_case)
 941 {
 942         int csum;
 943         char *p;
 944         char extension[4];
 945         char base[9];
 946         int baselen = 0;
 947         int extlen = 0;
 948         char *s = SMB_STRDUP(in);
 949
 950         extension[0] = 0;
 951         base[0] = 0;
 952
 953         if (!s) {
 954                 return False;
 955         }
 956
 957         p = strrchr(s,'.');
 958         if( p && (strlen(p+1) < (size_t)4) ) {
 959                 bool all_normal = ( strisnormal(p+1, default_case) ); /* XXXXXXXXX */
 960
 961                 if( all_normal && p[1] != 0 ) {
 962                         *p = 0;
 963                         csum = str_checksum( s );
 964                         *p = '.';
 965                 } else
 966                         csum = str_checksum(s);
 967         } else
 968                 csum = str_checksum(s);
 969
 970         if (!strupper_m( s )) {
 971                 SAFE_FREE(s);
 972                 return false;
 973         }
 974
 975         if( p ) {
 976                 if( p == s )
 977                         strlcpy( extension, "___", 4);
 978                 else {
 979                         *p++ = 0;
 980                         while( *p && extlen < 3 ) {
 981                                 if ( *p != '.') {
 982                                         extension[extlen++] = p[0];
 983                                 }
 984                                 p++;
 985                         }
 986                         extension[extlen] = 0;
 987                 }
 988         }
 989
 990         p = s;
 991
 992         while( *p && baselen < 5 ) {
 993                 if (isbasechar(*p)) {
 994                         base[baselen++] = p[0];
 995                 }
 996                 p++;
 997         }
 998         base[baselen] = 0;
 999
1000         csum = csum % (MANGLE_BASE*MANGLE_BASE);
1001
1002         memcpy(out, base, baselen);
1003         out[baselen] = magic_char;
1004         out[baselen+1] = mangle( csum/MANGLE_BASE );
1005         out[baselen+2] = mangle( csum );
1006
1007         if( *extension ) {
1008                 out[baselen+3] = '.';
1009                 strlcpy(&out[baselen+4], extension, 4);
1010         }
1011
1012         SAFE_FREE(s);
1013         return True;
1014 }
1015
1016 static bool must_mangle(const char *name,
1017                         const struct share_params *p)
1018 {
1019         smb_ucs2_t *name_ucs2 = NULL;
1020         NTSTATUS status;
1021         size_t converted_size;
1022
1023         if (!push_ucs2_talloc(NULL, &name_ucs2, name, &converted_size)) {
1024                 DEBUG(0, ("push_ucs2_talloc failed!\n"));
1025                 return False;
1026         }
1027         status = is_valid_name(name_ucs2, False, False);
1028         TALLOC_FREE(name_ucs2);
1029         /* We return true if we *must* mangle, so if it's
1030          * a valid name (status == OK) then we must return
1031          * false. Bug #6939. */
1032         return !NT_STATUS_IS_OK(status);
1033 }
1034
1035 /*****************************************************************************
1036  * Convert a filename to DOS format.  Return True if successful.
1037  *  Input:  in        Incoming name.
1038  *
1039  *          out       8.3 DOS name.
1040  *
1041  *          cache83 - If False, the mangled name cache will not be updated.
1042  *                    This is usually used to prevent that we overwrite
1043  *                    a conflicting cache entry prematurely, i.e. before
1044  *                    we know whether the client is really interested in the
1045  *                    current name.  (See PR#13758).  UKD.
1046  *
1047  * ****************************************************************************
1048  */
1049
1050 static bool hash_name_to_8_3(const char *in,
1051                         char out[13],
1052                         bool cache83,
1053                         int default_case,
1054                         const struct share_params *p)
1055 {
1056         smb_ucs2_t *in_ucs2 = NULL;
1057         size_t converted_size;
1058         char magic_char;
1059
1060         magic_char = lp_mangling_char(p);
1061
1062         DEBUG(5,("hash_name_to_8_3( %s, cache83 = %s)\n", in,
1063                  cache83 ? "True" : "False"));
1064
1065         if (!push_ucs2_talloc(NULL, &in_ucs2, in, &converted_size)) {
1066                 DEBUG(0, ("push_ucs2_talloc failed!\n"));
1067                 return False;
1068         }
1069
1070         /* If it's already 8.3, just copy. */
1071         if (NT_STATUS_IS_OK(is_valid_name(in_ucs2, False, False)) &&
1072                                 NT_STATUS_IS_OK(is_8_3_w(in_ucs2, False))) {
1073                 TALLOC_FREE(in_ucs2);
1074                 strlcpy(out, in, 13);
1075                 return True;
1076         }
1077
1078         TALLOC_FREE(in_ucs2);
1079         if (!to_8_3(magic_char, in, out, default_case)) {
1080                 return False;
1081         }
1082
1083         cache_mangled_name(out, in);
1084
1085         DEBUG(5,("hash_name_to_8_3(%s) ==> [%s]\n", in, out));
1086         return True;
1087 }
1088
1089 /*
1090   the following provides the abstraction layer to make it easier
1091   to drop in an alternative mangling implementation
1092 */
1093 static const struct mangle_fns mangle_hash_fns = {
1094         mangle_reset,
1095         is_mangled,
1096         must_mangle,
1097         is_8_3,
1098         lookup_name_from_8_3,
1099         hash_name_to_8_3
1100 };
1101
1102 /* return the methods for this mangling implementation */
1103 const struct mangle_fns *mangle_hash_init(void)
1104 {
1105         mangle_reset();
1106
1107         if (chartest == NULL) {
1108                 init_chartest();
1109         }
1110
1111         /* Create the in-memory tdb using our custom hash function. */
1112         tdb_mangled_cache = tdb_open_ex("mangled_cache", 1031, TDB_INTERNAL,
1113                                 (O_RDWR|O_CREAT), 0644, NULL, fast_string_hash);
1114
1115         return &mangle_hash_fns;
1116 }