diff options
Diffstat (limited to 'source3/lib/ms_fnmatch.c')
| -rw-r--r-- | source3/lib/ms_fnmatch.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/source3/lib/ms_fnmatch.c b/source3/lib/ms_fnmatch.c new file mode 100644 index 0000000000..106efa5bbc --- /dev/null +++ b/source3/lib/ms_fnmatch.c @@ -0,0 +1,225 @@ +/* + 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); +} |