/*

   Unix SMB/CIFS implementation.

   Name mangling

   Copyright (C) Andrew Tridgell 1992-2002

   Copyright (C) Simo Sorce 2001

   Copyright (C) Andrew Bartlett 2002

   Copyright (C) Jeremy Allison 2007

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "includes.h"

#include "system/filesys.h"

#include "smbd/smbd.h"

#include "smbd/globals.h"

#include "mangle.h"

#include "util_tdb.h"

#include "lib/param/loadparm.h"

/* -------------------------------------------------------------------------- **

 * Other stuff...

 *

 * magic_char     - This is the magic char used for mangling.  It's

 *                  global.  There is a call to lp_mangling_char() in server.c

 *                  that is used to override the initial value.

 *

 * MANGLE_BASE    - This is the number of characters we use for name mangling.

 *

 * basechars      - The set characters used for name mangling.  This

 *                  is static (scope is this file only).

 *

 * mangle()       - Macro used to select a character from basechars (i.e.,

 *                  mangle(n) will return the nth digit, modulo MANGLE_BASE).

 *

 * chartest       - array 0..255.  The index range is the set of all possible

 *                  values of a byte.  For each byte value, the content is a

 *                  two nibble pair.  See BASECHAR_MASK below.

 *

 * ct_initialized - False until the chartest array has been initialized via

 *                  a call to init_chartest().

 *

 * BASECHAR_MASK  - Masks the upper nibble of a one-byte value.

 *

 * isbasecahr()   - Given a character, check the chartest array to see

 *                  if that character is in the basechars set.  This is

 *                  faster than using strchr_m().

 *

 */

static const char basechars[43]="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_-!@#$%";

#define MANGLE_BASE       (sizeof(basechars)/sizeof(char)-1)

#define mangle(V) ((char)(basechars[(V) % MANGLE_BASE]))

#define BASECHAR_MASK 0xf0

#define isbasechar(C) ( (chartest[ ((C) & 0xff) ]) & BASECHAR_MASK )

/* -------------------------------------------------------------------- */

/*******************************************************************

 Determine if a character is valid in a 8.3 name.

********************************************************************/

static const uint32_t valid_table[] = {

  0x00000000,0x2fff7bfa,0xefffffff,0xefffffff,0x00000001,0x0fffffee,

  0xffffffff,0xffffffff,0x00000000,0x00000000,0x00000000,0x01000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0xfffe0000,0xfffe03fb,

  0x000003ff,0x00000000,0xffff0002,0xffffffff,0x0002ffff,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x33210000,0x080d0063,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00400008,0x00000802,0x00000000,0x03ff03ff,0x000f0000,0x00000000,

  0x00140000,0x00000000,0xe402098d,0x20305fa1,0x00040000,0x00000cc3,

  0x000000cc,0x80000020,0x00000000,0x00000000,0x00040000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x000fffff,0x00000000,0x00000000,

  0x00000000,0x00000000,0x3999900f,0x99999939,0x00000804,0x00000000,

  0x00000000,0x300c0003,0x0000c8c0,0x00008000,0x00000060,0x00000000,

  0x00000005,0x0000a400,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0xa03fffef,0x00000000,0xfffffffe,0xffffffff,0x781fffff,0xfffffffe,

  0xffffffff,0x787fffff,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x02060000,

  0x00000000,0x00000000,0x00000000,0x000001f0,0x00000000,0x00000000,

  0x01102008,0x084008cc,0x00822600,0x78000000,0x7000c000,0x00000002,

  0x00002010,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x43f36f8b,0x9b462542,0xe3e0e82c,0x400a0004,0xdb365f65,0x04497977,

  0xe3f0ecd7,0x18c5603a,0x3403e60b,0x37518000,0x7eebe0c8,0x98698200,

  0x2d56ad48,0x8060e803,0xad93661c,0xc568c03a,0xc656aa60,0x02403f7e,

  0x146183cd,0x21751020,0x07122021,0x40bc3000,0x4562a624,0x0a3060a8,

  0x85740217,0x9c840402,0x14157ffb,0x11e27f34,0x22efb665,0x60ff1f75,

  0x38403a70,0x676336c3,0x20b24dd9,0x0fc946b0,0x4850bc98,0xa03f8638,

  0x98162388,0x5232be49,0xeba422ab,0xc72c00dd,0x26e1a1e7,0x8f0a841b,

  0x559e27eb,0x89bfc241,0x85480014,0x084d6361,0xaad07f0c,0x05cfff3e,

  0xa803ff1a,0x7b407a41,0x80024745,0x38eb0500,0x1005dc51,0x710c9b34,

  0x01000397,0xa4046366,0x005180d0,0x430ac000,0x30c89071,0x58000008,

  0xf7000ed9,0x00415f80,0x941000b0,0x62800018,0x09d00240,0x01568200,

  0x08015004,0x05101d10,0x001084c1,0x10504025,0x4d8a410f,0xa60d4009,

  0x914cab19,0x098121c0,0x0203c485,0x80000672,0x00080b04,0x0009141d,

  0x905c49c9,0x16900009,0x22200c65,0x24338412,0x47960c03,0x42250a04,

  0xd0880028,0x4f0c4900,0xd3aa14a2,0x3e87d830,0x1f618e04,0x41867ea4,

  0x2dbbc390,0x211857ad,0x2a48241e,0x4e041138,0x161b0a40,0x88400d60,

  0x9502020a,0x10608221,0x04000243,0x80001444,0x0c040000,0x70000000,

  0x00c11a06,0x0c00024a,0x00401a00,0x40451404,0xbdf30029,0x052b0a78,

  0xbfa0bba9,0x8379407c,0xe91d12fd,0xc5695bf6,0x444aeff6,0xff022115,

  0x402bed63,0x0242d033,0x00131000,0x5dca1b42,0x020000a0,0x2c61a703,

  0x8ff24880,0x00000284,0x100d5804,0x0048b200,0x20011894,0x37805004,

  0x684d3200,0x68be49ea,0x2e42184c,0x21c9a820,0x80b050b9,0xff7c001e,

  0x14e0849a,0x01e028c1,0xac49870e,0xdddb130f,0x89fbbe1a,0x51b2a2e2,

  0x32ca5522,0x928b3ec6,0x438f1dbf,0x32986703,0x73c03028,0xa9230811,

  0x3a65c000,0x04028fe3,0xa6252c4e,0x00a1bf3d,0x8cd43e3a,0x317c06c9,

  0xd52a00e0,0x0edf018b,0x8c22e34b,0xf0911183,0xa7287d94,0x40fbc9ac,

  0x07534484,0x44445a90,0x00013fc8,0xf5d40048,0xec5f7701,0x891dc442,

  0x49286b83,0xd2424109,0x59fe061d,0x3a221840,0x3b9fb7e4,0xc0eaf003,

  0x82021386,0xe4008980,0x10a1b200,0x0cc44b80,0x8944d309,0x48341faf,

  0x0c458259,0x0470420a,0x10c8a040,0x44503140,0x01004004,0x05408281,

  0x642c0108,0x1a056a30,0x051460a6,0x645690cf,0x31000021,0xcbf09c18,

  0x63e2e120,0x01b5104c,0x9a83538c,0x3281b8b2,0x0a84987a,0x0c0233e7,

  0xd038d6cd,0x9872e1b1,0xe2848a1e,0x0459c3f4,0x23c2439a,0xd3144845,

  0x36400292,0xffbd0241,0xe8f0eb09,0xa5d27dc0,0xd24bc242,0xd0afa47f,

  0x34a11aa0,0x0bd88247,0x651bc453,0xc83ad294,0x40c8001e,0x33140e06,

  0xb21f615f,0xc0d00088,0xa898a02a,0x166ba1c5,0x85b4af50,0x0604c08b,

  0x1e04f933,0xa251056e,0x76380400,0x73b8ed07,0x19324406,0xc8164081,

  0x63097c8a,0xaa042984,0xca9c1c24,0x27614e0e,0x830009d0,0xc10c0846,

  0x10816011,0x0908540d,0xcc0a000e,0x0c000514,0xa0440430,0x6784008b,

  0x8a195288,0x8b18865e,0x41602e59,0x9cbe8c10,0x895c6861,0x00089800,

  0x089a8100,0xc1900018,0xf4a14007,0x640d8505,0x0e4d314e,0xff0a4806,

  0x2ea81632,0x000b852e,0xca841810,0x696c0e20,0x16000032,0x0390d658,

  0x1a6851a0,0x11249000,0x432698e1,0x1fae5d52,0xae280fa0,0x5700fafb,

  0x99406408,0xc044c880,0xb1419005,0xa4c48424,0x603a1a34,0xc1949000,

  0x003a8246,0xc106180d,0x99100022,0x1511e050,0x00824157,0x022a041a,

  0x8930004f,0x446ad813,0xed228aa2,0x400511c0,0x01021000,0x31018808,

  0x02044620,0x0f08f800,0xa2008900,0x22020000,0x16108210,0x10400042,

  0x126052c0,0x200052f4,0x82308510,0x42021100,0x80b5430a,0xda2070e1,

  0x08012040,0xfc653500,0xab0419c1,0x62140286,0x00440087,0x42469085,

  0x0a85405c,0x33803207,0xb8c00400,0xc0d0ce30,0x0080c030,0x0da50508,

  0x00400a90,0x280c0200,0x40446705,0x41226429,0x000002e8,0x847c4664,

  0xde200002,0x4049861d,0xc0000a08,0x20010084,0x10108400,0x01c742cd,

  0xd52a703a,0x1d8f9968,0x3e12be50,0x81d9aef5,0x2412cec4,0x732e0828,

  0x4b3424ac,0xd41d020c,0x80002a02,0x08110097,0x114411c4,0x7d451786,

  0x5e4949dd,0x87914040,0xd8c4254c,0x491444ba,0xc8001b92,0x15800271,

  0x0c0000c1,0xc200096a,0x40024800,0xba493021,0x1c802080,0x1008e2ac,

  0x00341004,0x841400e3,0x20004020,0x14149810,0x04aa70c2,0x54208688,

  0x04130c62,0x20109180,0x02064082,0x54011c40,0xe4e90383,0x84802125,

  0x2810e433,0xe60944c0,0x81260a03,0x080112da,0x97906901,0xf8864001,

  0x0081e24d,0xa6510a0e,0x81ec011a,0x8441c600,0xb62eadb8,0x8741acef,

  0x4b028d54,0x02681161,0x2057bb60,0x043350a0,0xf7b4a8c0,0x01122402,

  0x20009ad3,0x00c82271,0x809e2081,0xe1800c8a,0x8151b009,0x40281031,

  0x89a52a0e,0x620e69b6,0xd1444425,0x4d548085,0x1fb12c75,0x862dd807,

  0x5841d97c,0x226e414e,0x9e088200,0xedb7f80d,0x75668c80,0x08149313,

  0xc8040e32,0x6ea6484e,0x66742c4a,0xba0126c0,0x185dd70c,0x00000000,

  0x00000000,0x00000000,0x00000000,0x05400000,0x813370a0,0x03a54f81,

  0x641055ec,0x2344c31a,0x00341462,0x1a090a43,0x13a5187b,0xa8480102,

  0xc5440440,0xe2dd8106,0x2d481af0,0x0416b626,0x6e405058,0x31128032,

  0x0c0007e4,0x420a8208,0x803b4840,0x87134860,0x3428850d,0xe5290319,

  0x870a2345,0x5c1825a9,0xd9c577a6,0x03e85e00,0xa7000081,0x41c6cd54,

  0xa2042800,0x2b0ab860,0xda9e0020,0x0e1a08ea,0x11c0427e,0x03768908,

  0x01058621,0x98a80004,0xc44846a0,0x20220d05,0x914854a2,0x28d78a01,

  0x00087898,0x31221605,0x08804340,0x06a2fa4e,0x92110814,0x9b142002,

  0x16432e52,0x90105000,0x85ba0041,0x20203042,0x07a84f0b,0x40802f08,

  0x1a930591,0x0601df50,0x3021a202,0x4e800630,0x04c80cc4,0x8001a004,

  0xd4316000,0x0a020880,0x00281c00,0x00418e18,0xca106ad0,0x4b00f210,

  0x1506274d,0x88900220,0x82a85a00,0x81504549,0x80002004,0x2c088804,

  0x000508d1,0x4ac48001,0x0062e0a0,0x0a42008e,0x6a8c3055,0xe0a5090e,

  0x42c42906,0x80b34814,0xb330803e,0x733c0102,0x700d1494,0x09400c20,

  0xc040301a,0xc094a451,0x05c88dca,0xa40c96c2,0x34040001,0x011000c8,

  0xa9cd550d,0x1cda2428,0x48370142,0x120f7a4d,0x452a32b4,0xd20531fb,

  0xdc44b894,0x45ca68d7,0x2ed15097,0x42081943,0x9d48d202,0xa0979840,

  0x064d5409,0x00000000,0x00000000,0x00000000,0x00000000,0x84800000,

  0x04215542,0x17001c06,0x61107624,0xb9ddff87,0x5c0a659f,0x3c11245d,

  0x005dadb0,0x00000000,0x00000000,0x00db28d0,0x02000422,0x44080108,

  0xac409804,0x90288d0a,0xe0018700,0x00310400,0x82211794,0x10540019,

  0x021a2cb2,0x40039c02,0x8804bd60,0x7900080c,0xba3c1628,0xcb088640,

  0x90807274,0x0000001e,0xd8000000,0x9c87e188,0x04124034,0x2791ae64,

  0xe6fbe86b,0x5366408f,0x537feea6,0xb5e4e3ab,0x0002869f,0x01228548,

  0x48004402,0x20a02116,0x02240004,0x00052080,0x01547e00,0x01ac162c,

  0x10852a84,0x05308c14,0xfdc3fbc3,0x906060fa,0x40336440,0x96901200,

  0x4e834b31,0x418200d4,0x1d6a0129,0x02802080,0x02ad8000,0x9f0c2691,

  0x67018044,0x0c24d96f,0x18d02910,0x50215001,0x04d01000,0x02017090,

  0x61c30148,0x01000132,0x07190088,0x05620802,0x4c0e0132,0xf0a10405,

  0x00000002,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00800000,0x035e8e8d,0x5a0421bd,0x11703488,0x00000026,

  0x10000000,0x8804c502,0xf801b815,0x25ed147c,0x3bb0ed60,0x1bd78589,

  0x1a627af3,0x0ac50d0c,0x524ae5d1,0x6b0d0490,0x5266a35c,0x16122b57,

  0x1101a872,0x00182949,0x10080948,0x886c6000,0x058f916e,0x39903012,

  0x49b0f840,0x001b88a0,0x00000000,0x00428500,0x98000058,0x7014ea04,

  0x611d1628,0x60005193,0x00a71a24,0x00000000,0x43c00000,0x10187120,

  0xa9270172,0x89066004,0x020cc022,0x40810900,0x8ca0602d,0x00000e34,

  0x00000000,0x11012100,0xd31a8011,0x0892ec4c,0x85000040,0x1806c7ac,

  0x0512e03e,0x00348000,0x80cec008,0x0a126d01,0x08568641,0x0027011e,

  0x083d3751,0x4e05e032,0x048401c0,0x01400081,0x00000000,0x00000000,

  0x00000000,0x00591aa0,0x882443c8,0xc8001d48,0x72030152,0x04059813,

  0x04008280,0x0d148a10,0x02088056,0x2704a040,0x4e000000,0x00000000,

  0x00000000,0xa3200000,0xa0ae1902,0xdf002660,0x7b17f010,0x3ad08121,

  0x00284180,0x48001003,0x8014cc00,0x00c414cf,0x30202000,0x00000001,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,

  0xffffffff,0xffffffff,0x00ffffff,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x000f0000,

  0x00000000,0x00000200,0x00000000,0x00000000,0x00000000,0x00000000,

  0x10000000,0x00000000,0xffffc000,0x00003fff,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,

  0xfffffffe,0xffffffff,0x7fffffff,0xfffffffe,0xffffffff,0x00000000,

  0x00000000,0x0000003f

};

#if 0

/*

 * The following program regenerates the good old valid.dat. Try it

 * yourself :-)

 */

int main(void)

{

  int i;

  for (i=0; i<65536; i++) {

    char c = (valid_table[i/32] & (1<<(i%32))) ? 1 : 0;

    write(1, &c, 1);

  }

}

#endif

static bool isvalid83_w(smb_ucs2_t c)

{

  uint16_t idx = SVAL(&c, 0);

  return (valid_table[idx/32] & (1 << (idx%32))) != 0;

}

static NTSTATUS has_valid_83_chars(const smb_ucs2_t *s, bool allow_wildcards)

{

  if (!*s) {

    return NT_STATUS_INVALID_PARAMETER;

  }

  if (!allow_wildcards && ms_has_wild_w(s)) {

    return NT_STATUS_UNSUCCESSFUL;

  }

  while (*s) {

    if(!isvalid83_w(*s)) {

      return NT_STATUS_UNSUCCESSFUL;

    }

    s++;

  }

  return NT_STATUS_OK;

}

static NTSTATUS has_illegal_chars(const smb_ucs2_t *s, bool allow_wildcards)

{

  if (!allow_wildcards && ms_has_wild_w(s)) {

    return NT_STATUS_UNSUCCESSFUL;

  }

  while (*s) {

    if (*s <= 0x1f) {

      /* Control characters. */

      return NT_STATUS_UNSUCCESSFUL;

    }

    switch(*s) {

      case UCS2_CHAR('\\'):

      case UCS2_CHAR('/'):

      case UCS2_CHAR('|'):

      case UCS2_CHAR(':'):

        return NT_STATUS_UNSUCCESSFUL;

    }

    s++;

  }

  return NT_STATUS_OK;

}

/*******************************************************************

 Duplicate string.

********************************************************************/

static smb_ucs2_t *strdup_w(const smb_ucs2_t *src)

{

  smb_ucs2_t *dest;

  size_t len = strlen_w(src);

  dest = SMB_MALLOC_ARRAY(smb_ucs2_t, len + 1);

  if (!dest) {

    DEBUG(0,("strdup_w: out of memory!\n"));

    return NULL;

  }

  memcpy(dest, src, len * sizeof(smb_ucs2_t));

  dest[len] = 0;

  return dest;

}

/* return False if something fail and

 * return 2 alloced unicode strings that contain prefix and extension

 */

static NTSTATUS mangle_get_prefix(const smb_ucs2_t *ucs2_string, smb_ucs2_t **prefix,

    smb_ucs2_t **extension, bool allow_wildcards)

{

  size_t ext_len;

  smb_ucs2_t *p;

  *extension = 0;

  *prefix = strdup_w(ucs2_string);

  if (!*prefix) {

    return NT_STATUS_NO_MEMORY;

  }

  if ((p = strrchr_w(*prefix, UCS2_CHAR('.')))) {

    ext_len = strlen_w(p+1);

    if ((ext_len > 0) && (ext_len < 4) && (p != *prefix) &&

        (NT_STATUS_IS_OK(has_valid_83_chars(p+1,allow_wildcards)))) /* check extension */ {

      *p = 0;

      *extension = strdup_w(p+1);

      if (!*extension) {

        SAFE_FREE(*prefix);

        return NT_STATUS_NO_MEMORY;

      }

    }

  }

  return NT_STATUS_OK;

}

/* ************************************************************************** **

 * Return NT_STATUS_UNSUCCESSFUL if a name is a special msdos reserved name.

 * or contains illegal characters.

 *

 *  Input:  fname - String containing the name to be tested.

 *

 *  Output: NT_STATUS_UNSUCCESSFUL, if the condition above is true.

 *

 *  Notes:  This is a static function called by is_8_3(), below.

 *

 * ************************************************************************** **

 */

static NTSTATUS is_valid_name(const smb_ucs2_t *fname, bool allow_wildcards, bool only_8_3)

{

  smb_ucs2_t *str, *p;

  size_t num_ucs2_chars;

  NTSTATUS ret = NT_STATUS_OK;

  if (!fname || !*fname)

    return NT_STATUS_INVALID_PARAMETER;

  /* . and .. are valid names. */

  if (strcmp_wa(fname, ".")==0 || strcmp_wa(fname, "..")==0)

    return NT_STATUS_OK;

  if (only_8_3) {

    ret = has_valid_83_chars(fname, allow_wildcards);

    if (!NT_STATUS_IS_OK(ret))

      return ret;

  }

  ret = has_illegal_chars(fname, allow_wildcards);

  if (!NT_STATUS_IS_OK(ret))

    return ret;

  /* Name can't end in '.' or ' ' */

  num_ucs2_chars = strlen_w(fname);

  if (fname[num_ucs2_chars-1] == UCS2_CHAR('.') || fname[num_ucs2_chars-1] == UCS2_CHAR(' ')) {

    return NT_STATUS_UNSUCCESSFUL;

  }

  str = strdup_w(fname);

  /* Truncate copy after the first dot. */

  p = strchr_w(str, UCS2_CHAR('.'));

  if (p) {

    *p = 0;

  }

  strupper_w(str);

  p = &str[1];

  switch(str[0])

  {

  case UCS2_CHAR('A'):

    if(strcmp_wa(p, "UX") == 0)

      ret = NT_STATUS_UNSUCCESSFUL;

    break;

  case UCS2_CHAR('C'):

    if((strcmp_wa(p, "LOCK$") == 0)

    || (strcmp_wa(p, "ON") == 0)

    || (strcmp_wa(p, "OM1") == 0)

    || (strcmp_wa(p, "OM2") == 0)

    || (strcmp_wa(p, "OM3") == 0)

    || (strcmp_wa(p, "OM4") == 0)

    )

      ret = NT_STATUS_UNSUCCESSFUL;

    break;

  case UCS2_CHAR('L'):

    if((strcmp_wa(p, "PT1") == 0)

    || (strcmp_wa(p, "PT2") == 0)

    || (strcmp_wa(p, "PT3") == 0)

    )

      ret = NT_STATUS_UNSUCCESSFUL;

    break;

  case UCS2_CHAR('N'):

    if(strcmp_wa(p, "UL") == 0)

      ret = NT_STATUS_UNSUCCESSFUL;

    break;

  case UCS2_CHAR('P'):

    if(strcmp_wa(p, "RN") == 0)

      ret = NT_STATUS_UNSUCCESSFUL;

    break;

  default:

    break;

  }

  SAFE_FREE(str);

  return ret;

}

static NTSTATUS is_8_3_w(const smb_ucs2_t *fname, bool allow_wildcards)

{

  smb_ucs2_t *pref = 0, *ext = 0;

  size_t plen;

  NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

  if (!fname || !*fname)

    return NT_STATUS_INVALID_PARAMETER;

  if (strlen_w(fname) > 12)

    return NT_STATUS_UNSUCCESSFUL;

  if (strcmp_wa(fname, ".") == 0 || strcmp_wa(fname, "..") == 0)

    return NT_STATUS_OK;

  /* Name cannot start with '.' */

  if (*fname == UCS2_CHAR('.'))

    return NT_STATUS_UNSUCCESSFUL;

  if (!NT_STATUS_IS_OK(is_valid_name(fname, allow_wildcards, True)))

    goto done;

  if (!NT_STATUS_IS_OK(mangle_get_prefix(fname, &pref, &ext, allow_wildcards)))

    goto done;

  plen = strlen_w(pref);

  if (strchr_wa(pref, '.'))

    goto done;

  if (plen < 1 || plen > 8)

    goto done;

  if (ext && (strlen_w(ext) > 3))

    goto done;

  ret = NT_STATUS_OK;

done:

  SAFE_FREE(pref);

  SAFE_FREE(ext);

  return ret;

}

static bool is_8_3(const char *fname, bool check_case, bool allow_wildcards,

       const struct share_params *p)

{

  const char *f;

  smb_ucs2_t *ucs2name;

  NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;

  size_t size;

  if (!fname || !*fname)

    return False;

  if ((f = strrchr(fname, '/')) == NULL)

    f = fname;

  else

    f++;

  if (strlen(f) > 12)

    return False;

  if (!push_ucs2_talloc(NULL, &ucs2name, f, &size)) {

    DEBUG(0,("is_8_3: internal error push_ucs2_talloc() failed!\n"));

    goto done;

  }

  ret = is_8_3_w(ucs2name, allow_wildcards);

done:

  TALLOC_FREE(ucs2name);

  if (!NT_STATUS_IS_OK(ret)) {

    return False;

  }

  return True;

}

/* -------------------------------------------------------------------------- **

 * Functions...

 */

/* ************************************************************************** **

 * Initialize the static character test array.

 *

 *  Input:  none

 *

 *  Output: none

 *

 *  Notes:  This function changes (loads) the contents of the <chartest>

 *          array.  The scope of <chartest> is this file.

 *

 * ************************************************************************** **

 */

static void init_chartest( void )

{

  const unsigned char *s;

  chartest = SMB_MALLOC_ARRAY(unsigned char, 256);

  SMB_ASSERT(chartest != NULL);

  memset(chartest, '\0', 256);

  for( s = (const unsigned char *)basechars; *s; s++ ) {

    chartest[*s] |= BASECHAR_MASK;

  }

}

/* ************************************************************************** **

 * Return True if the name *could be* a mangled name.

 *

 *  Input:  s - A path name - in UNIX pathname format.

 *

 *  Output: True if the name matches the pattern described below in the

 *          notes, else False.

 *

 *  Notes:  The input name is *not* tested for 8.3 compliance.  This must be

 *          done separately.  This function returns true if the name contains

 *          a magic character followed by exactly two characters from the

 *          basechars list (above), which in turn are followed either by the

 *          nul (end of string) byte or a dot (extension) or by a '/' (end of

 *          a directory name).

 *

 * ************************************************************************** **

 */

static bool is_mangled(const char *s, const struct share_params *p)

{

  char *magic;

  char magic_char;

  magic_char = lp_mangling_char(p);

  if (chartest == NULL) {

    init_chartest();

  }

  magic = strchr_m( s, magic_char );

  while( magic && magic[1] && magic[2] ) {         /* 3 chars, 1st is magic. */

    if( ('.' == magic[3] || '/' == magic[3] || !(magic[3]))          /* Ends with '.' or nul or '/' ?  */

        && isbasechar( toupper_m(magic[1]) )           /* is 2nd char basechar?  */

        && isbasechar( toupper_m(magic[2]) ) )         /* is 3rd char basechar?  */

      return( True );                           /* If all above, then true, */

    magic = strchr_m( magic+1, magic_char );      /*    else seek next magic. */

  }

  return( False );

}

/***************************************************************************

 Initializes or clears the mangled cache.

***************************************************************************/

static void mangle_reset( void )

{

  /* We could close and re-open the tdb here... should we ? The old code did

     the equivalent... JRA. */

}

/***************************************************************************

 Add a mangled name into the cache.

 If the extension of the raw name maps directly to the

 extension of the mangled name, then we'll store both names

 *without* extensions.  That way, we can provide consistent

 reverse mangling for all names that match.  The test here is

 a bit more careful than the one done in earlier versions of

 mangle.c:

    - the extension must exist on the raw name,

    - it must be all lower case

    - it must match the mangled extension (to prove that no

      mangling occurred).

  crh 07-Apr-1998

**************************************************************************/

static void cache_mangled_name( const char mangled_name[13],

        const char *raw_name )

{

  TDB_DATA data_val;

  char mangled_name_key[13];

  char *s1 = NULL;

  char *s2 = NULL;

  /* If the cache isn't initialized, give up. */

  if( !tdb_mangled_cache )

    return;

  /* Init the string lengths. */

  strlcpy(mangled_name_key, mangled_name, sizeof(mangled_name_key));

  /* See if the extensions are unmangled.  If so, store the entry

   * without the extension, thus creating a "group" reverse map.

   */

  s1 = strrchr( mangled_name_key, '.' );

  if( s1 && (s2 = strrchr( raw_name, '.' )) ) {

    size_t i = 1;

    while( s1[i] && (tolower_m( s1[i] ) == s2[i]) )

      i++;

    if( !s1[i] && !s2[i] ) {

      /* Truncate at the '.' */

      *s1 = '\0';

      /*

       * DANGER WILL ROBINSON - this

       * is changing a const string via

       * an aliased pointer ! Remember to

       * put it back once we've used it.

       * JRA

       */

      *s2 = '\0';

    }

  }

  /* Allocate a new cache entry.  If the allocation fails, just return. */

  data_val = string_term_tdb_data(raw_name);

  if (tdb_store_bystring(tdb_mangled_cache, mangled_name_key, data_val, TDB_REPLACE) != 0) {

    DEBUG(0,("cache_mangled_name: Error storing entry %s -> %s\n", mangled_name_key, raw_name));

  } else {

    DEBUG(5,("cache_mangled_name: Stored entry %s -> %s\n", mangled_name_key, raw_name));

  }

  /* Restore the change we made to the const string. */

  if (s2) {

    *s2 = '.';

  }

}

/* ************************************************************************** **

 * Check for a name on the mangled name stack

 *

 *  Input:  s - Input *and* output string buffer.

 *      maxlen - space in i/o string buffer.

 *  Output: True if the name was found in the cache, else False.

 *

 *  Notes:  If a reverse map is found, the function will overwrite the string

 *          space indicated by the input pointer <s>.  This is frightening.

 *          It should be rewritten to return NULL if the long name was not

 *          found, and a pointer to the long name if it was found.

 *

 * ************************************************************************** **

 */

static bool lookup_name_from_8_3(TALLOC_CTX *ctx,

        const char *in,

        char **out, /* talloced on the given context. */

        const struct share_params *p)

{

  TDB_DATA data_val;

  char *saved_ext = NULL;

  char *s = talloc_strdup(ctx, in);

  /* If the cache isn't initialized, give up. */

  if(!s || !tdb_mangled_cache ) {

    TALLOC_FREE(s);

    return False;

  }

  data_val = tdb_fetch_bystring(tdb_mangled_cache, s);

  /* If we didn't find the name *with* the extension, try without. */

  if(data_val.dptr == NULL || data_val.dsize == 0) {

    char *ext_start = strrchr( s, '.' );

    if( ext_start ) {

      if((saved_ext = talloc_strdup(ctx,ext_start)) == NULL) {

        TALLOC_FREE(s);

        return False;

      }

      *ext_start = '\0';

      data_val = tdb_fetch_bystring(tdb_mangled_cache, s);

      /*

       * At this point s is the name without the

       * extension. We re-add the extension if saved_ext

       * is not null, before freeing saved_ext.

       */

    }

  }

  /* Okay, if we haven't found it we're done. */

  if(data_val.dptr == NULL || data_val.dsize == 0) {

    TALLOC_FREE(saved_ext);

    TALLOC_FREE(s);

    return False;

  }

  /* If we *did* find it, we need to talloc it on the given ctx. */

  if (saved_ext) {

    *out = talloc_asprintf(ctx, "%s%s",

          (char *)data_val.dptr,

          saved_ext);

  } else {

    *out = talloc_strdup(ctx, (char *)data_val.dptr);

  }

  TALLOC_FREE(s);

  TALLOC_FREE(saved_ext);

  SAFE_FREE(data_val.dptr);

  return *out ? True : False;

}

/**

 Check if a string is in "normal" case.

**/

static bool strisnormal(const char *s, int case_default)

{

  if (case_default == CASE_UPPER)

    return(!strhaslower(s));

  return(!strhasupper(s));

}

/*****************************************************************************

 Do the actual mangling to 8.3 format.

*****************************************************************************/

static bool to_8_3(char magic_char, const char *in, char out[13], int default_case)

{

  int csum;

  char *p;

  char extension[4];

  char base[9];

  int baselen = 0;

  int extlen = 0;

  char *s = SMB_STRDUP(in);

  extension[0] = 0;

  base[0] = 0;

  if (!s) {

    return False;

  }

  p = strrchr(s,'.');

  if( p && (strlen(p+1) < (size_t)4) ) {

    bool all_normal = ( strisnormal(p+1, default_case) ); /* XXXXXXXXX */

    if( all_normal && p[1] != 0 ) {

      *p = 0;

      csum = str_checksum( s );

      *p = '.';

    } else

      csum = str_checksum(s);

  } else

    csum = str_checksum(s);

  if (!strupper_m( s )) {

    SAFE_FREE(s);

    return false;

  }

  if( p ) {

    if( p == s )