--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ filename matching routine
+ Copyright (C) Andrew Tridgell 1992-2004
+
+ 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 (if any) resemblence to that
+ code now
+*/
+
+
+#include "includes.h"
+
+static int null_match(const smb_ucs2_t *p)
+{
+ for (;*p;p++) {
+ if (*p != UCS2_CHAR('*') &&
+ *p != UCS2_CHAR('<') &&
+ *p != UCS2_CHAR('"') &&
+ *p != UCS2_CHAR('>')) return -1;
+ }
+ return 0;
+}
+
+/*
+ the max_n structure is purely for efficiency, it doesn't contribute
+ to the matching algorithm except by ensuring that the algorithm does
+ not grow exponentially
+*/
+struct max_n {
+ const smb_ucs2_t *predot;
+ const smb_ucs2_t *postdot;
+};
+
+
+/*
+ p and n are the pattern and string being matched. The max_n array is
+ an optimisation only. The ldot pointer is NULL if the string does
+ not contain a '.', otherwise it points at the last dot in 'n'.
+*/
+static int ms_fnmatch_core(const smb_ucs2_t *p, const smb_ucs2_t *n,
+ struct max_n *max_n, const smb_ucs2_t *ldot,
+ BOOL is_case_sensitive)
+{
+ smb_ucs2_t c;
+ int i;
+
+ while ((c = *p++)) {
+ switch (c) {
+ /* a '*' matches zero or more characters of any type */
+ case UCS2_CHAR('*'):
+ if (max_n->predot && max_n->predot <= n) {
+ return null_match(p);
+ }
+ for (i=0; n[i]; i++) {
+ if (ms_fnmatch_core(p, n+i, max_n+1, ldot, is_case_sensitive) == 0) {
+ return 0;
+ }
+ }
+ if (!max_n->predot || max_n->predot > n) max_n->predot = n;
+ return null_match(p);
+
+ /* a '<' matches zero or more characters of
+ any type, but stops matching at the last
+ '.' in the string. */
+ case UCS2_CHAR('<'):
+ if (max_n->predot && max_n->predot <= n) {
+ return null_match(p);
+ }
+ if (max_n->postdot && max_n->postdot <= n && n <= ldot) {
+ return -1;
+ }
+ for (i=0; n[i]; i++) {
+ if (ms_fnmatch_core(p, n+i, max_n+1, ldot, is_case_sensitive) == 0) return 0;
+ if (n+i == ldot) {
+ if (ms_fnmatch_core(p, n+i+1, max_n+1, ldot, is_case_sensitive) == 0) return 0;
+ if (!max_n->postdot || max_n->postdot > n) max_n->postdot = n;
+ return -1;
+ }
+ }
+ if (!max_n->predot || max_n->predot > n) max_n->predot = n;
+ return null_match(p);
+
+ /* a '?' matches any single character */
+ case UCS2_CHAR('?'):
+ if (! *n) {
+ return -1;
+ }
+ n++;
+ break;
+
+ /* a '?' matches any single character */
+ case UCS2_CHAR('>'):
+ if (n[0] == UCS2_CHAR('.')) {
+ if (! n[1] && null_match(p) == 0) {
+ return 0;
+ }
+ break;
+ }
+ if (! *n) return null_match(p);
+ n++;
+ break;
+
+ case UCS2_CHAR('"'):
+ if (*n == 0 && null_match(p) == 0) {
+ return 0;
+ }
+ if (*n != UCS2_CHAR('.')) return -1;
+ n++;
+ break;
+
+ default:
+ if (c != *n) {
+ if (is_case_sensitive) {
+ return -1;
+ }
+ if (toupper_w(c) != toupper_w(*n)) {
+ return -1;
+ }
+ }
+ n++;
+ break;
+ }
+ }
+
+ if (! *n) {
+ return 0;
+ }
+
+ return -1;
+}
+
+int ms_fnmatch(const char *pattern, const char *string, BOOL translate_pattern,
+ BOOL is_case_sensitive)
+{
+ wpstring p, s;
+ int ret, count, i;
+ struct max_n *max_n = NULL;
+
+ if (strcmp(string, "..") == 0) {
+ string = ".";
+ }
+
+ if (strpbrk(pattern, "<>*?\"") == NULL) {
+ /* this is not just an optmisation - it is essential
+ for LANMAN1 correctness */
+ if (is_case_sensitive) {
+ return strcmp(pattern, string);
+ } else {
+ return StrCaseCmp(pattern, string);
+ }
+ }
+
+ if (push_ucs2(NULL, p, pattern, sizeof(p), STR_TERMINATE) == (size_t)-1) {
+ /* Not quite the right answer, but finding the right one
+ under this failure case is expensive, and it's pretty close */
+ return -1;
+ }
+
+ if (push_ucs2(NULL, s, string, sizeof(s), STR_TERMINATE) == (size_t)-1) {
+ /* Not quite the right answer, but finding the right one
+ under this failure case is expensive, and it's pretty close */
+ return -1;
+ }
+
+ if (translate_pattern) {
+ /*
+ for older negotiated protocols it is possible to
+ translate the pattern to produce a "new style"
+ pattern that exactly matches w2k behaviour
+ */
+ for (i=0;p[i];i++) {
+ if (p[i] == UCS2_CHAR('?')) {
+ p[i] = UCS2_CHAR('>');
+ } else if (p[i] == UCS2_CHAR('.') &&
+ (p[i+1] == UCS2_CHAR('?') ||
+ p[i+1] == UCS2_CHAR('*') ||
+ p[i+1] == 0)) {
+ p[i] = UCS2_CHAR('"');
+ } else if (p[i] == UCS2_CHAR('*') && p[i+1] == UCS2_CHAR('.')) {
+ p[i] = UCS2_CHAR('<');
+ }
+ }
+ }
+
+ for (count=i=0;p[i];i++) {
+ if (p[i] == UCS2_CHAR('*') || p[i] == UCS2_CHAR('<')) count++;
+ }
+
+ if (count != 0) {
+ max_n = SMB_CALLOC_ARRAY(struct max_n, count);
+ if (!max_n) {
+ return -1;
+ }
+ }
+
+ ret = ms_fnmatch_core(p, s, max_n, strrchr_w(s, UCS2_CHAR('.')), is_case_sensitive);
+
+ if (max_n) {
+ free(max_n);
+ }
+
+ 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, False);
+}
projects / samba / blobdiff