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/*
Unix SMB/CIFS implementation.
filename matching routine
Copyright (C) Andrew Tridgell 1992-1998
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/*
This module was originally based on fnmatch.c copyright by the Free
Software Foundation. It bears little resemblence to that code now
*/
#if FNMATCH_TEST
#include <stdio.h>
#include <stdlib.h>
#else
#include "includes.h"
#endif
/*
bugger. we need a separate wildcard routine for older versions
of the protocol. This is not yet perfect, but its a lot
better than what we had */
static int ms_fnmatch_lanman_core(const smb_ucs2_t *pattern,
const smb_ucs2_t *string)
{
const smb_ucs2_t *p = pattern, *n = string;
smb_ucs2_t c;
if (strcmp_wa(p, "?")==0 && strcmp_wa(n, ".")) goto match;
while ((c = *p++)) {
switch (c) {
case UCS2_CHAR('.'):
if (! *n) goto next;
if (*n != UCS2_CHAR('.')) goto nomatch;
n++;
break;
case UCS2_CHAR('?'):
if (! *n) goto next;
if ((*n == UCS2_CHAR('.') &&
n[1] != UCS2_CHAR('.')) || ! *n)
goto next;
n++;
break;
case UCS2_CHAR('>'):
if (! *n) goto next;
if (n[0] == UCS2_CHAR('.')) {
if (! n[1] && ms_fnmatch_lanman_core(p, n+1) == 0) goto match;
if (ms_fnmatch_lanman_core(p, n) == 0) goto match;
goto nomatch;
}
n++;
break;
case UCS2_CHAR('*'):
if (! *n) goto next;
if (! *p) goto match;
for (; *n; n++) {
if (ms_fnmatch_lanman_core(p, n) == 0) goto match;
}
break;
case UCS2_CHAR('<'):
for (; *n; n++) {
if (ms_fnmatch_lanman_core(p, n) == 0) goto match;
if (*n == UCS2_CHAR('.') &&
!strchr_w(n+1,UCS2_CHAR('.'))) {
n++;
break;
}
}
break;
case UCS2_CHAR('"'):
if (*n == 0 && ms_fnmatch_lanman_core(p, n) == 0) goto match;
if (*n != UCS2_CHAR('.')) goto nomatch;
n++;
break;
default:
if (c != *n) goto nomatch;
n++;
}
}
if (! *n) goto match;
nomatch:
/*
if (verbose) printf("NOMATCH pattern=[%s] string=[%s]\n", pattern, string);
*/
return -1;
next:
if (ms_fnmatch_lanman_core(p, n) == 0) goto match;
goto nomatch;
match:
/*
if (verbose) printf("MATCH pattern=[%s] string=[%s]\n", pattern, string);
*/
return 0;
}
static int ms_fnmatch_lanman1(const smb_ucs2_t *pattern, const smb_ucs2_t *string)
{
if (!strpbrk_wa(pattern, "?*<>\"")) {
smb_ucs2_t s[] = {UCS2_CHAR('.'), 0};
if (strcmp_wa(string,"..") == 0) string = s;
return strcasecmp_w(pattern, string);
}
if (strcmp_wa(string,"..") == 0 || strcmp_wa(string,".") == 0) {
smb_ucs2_t dot[] = {UCS2_CHAR('.'), 0};
smb_ucs2_t dotdot[] = {UCS2_CHAR('.'), UCS2_CHAR('.'), 0};
return ms_fnmatch_lanman_core(pattern, dotdot) &&
ms_fnmatch_lanman_core(pattern, dot);
}
return ms_fnmatch_lanman_core(pattern, string);
}
/* the following function was derived using the masktest utility -
after years of effort we finally have a perfect MS wildcard
matching routine!
NOTE: this matches only filenames with no directory component
Returns 0 on match, -1 on fail.
*/
static int ms_fnmatch_w(const smb_ucs2_t *pattern, const smb_ucs2_t *string, int protocol)
{
const smb_ucs2_t *p = pattern, *n = string;
smb_ucs2_t c;
if (protocol <= PROTOCOL_LANMAN2) {
return ms_fnmatch_lanman1(pattern, string);
}
while ((c = *p++)) {
switch (c) {
case UCS2_CHAR('?'):
if (! *n) return -1;
n++;
break;
case UCS2_CHAR('>'):
if (n[0] == UCS2_CHAR('.')) {
if (! n[1] && ms_fnmatch_w(p, n+1, protocol) == 0) return 0;
if (ms_fnmatch_w(p, n, protocol) == 0) return 0;
return -1;
}
if (! *n) return ms_fnmatch_w(p, n, protocol);
n++;
break;
case UCS2_CHAR('*'):
for (; *n; n++) {
if (ms_fnmatch_w(p, n, protocol) == 0) return 0;
}
break;
case UCS2_CHAR('<'):
for (; *n; n++) {
if (ms_fnmatch_w(p, n, protocol) == 0) return 0;
if (*n == UCS2_CHAR('.') && !strchr_wa(n+1,'.')) {
n++;
break;
}
}
break;
case UCS2_CHAR('"'):
if (*n == 0 && ms_fnmatch_w(p, n, protocol) == 0) return 0;
if (*n != UCS2_CHAR('.')) return -1;
n++;
break;
default:
if (c != *n) return -1;
n++;
}
}
if (! *n) return 0;
return -1;
}
int ms_fnmatch(const char *pattern, const char *string, int protocol)
{
wpstring p, s;
int ret;
pstrcpy_wa(p, pattern);
pstrcpy_wa(s, string);
ret = ms_fnmatch_w(p, s, protocol);
/* DEBUG(0,("ms_fnmatch(%s,%s) -> %d\n", pattern, string, ret)); */
return ret;
}
/* a generic fnmatch function - uses for non-CIFS pattern matching */
int gen_fnmatch(const char *pattern, const char *string)
{
return ms_fnmatch(pattern, string, PROTOCOL_NT1);
}
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