/************************************************************************
* IRC - Internet Relay Chat, common/match.c
* Copyright (C) 1990 Jarkko Oikarinen
*
* 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 1, 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.
*/
#ifndef lint
static char rcsid[] = "@(#)$Id: match.c,v 1.7 2004/02/27 14:05:22 skold Exp $";
#endif
#include "os.h"
#ifndef CLIENT_COMPILE
# include "s_defines.h"
#else
# include "c_defines.h"
#endif
#define MATCH_C
#ifndef CLIENT_COMPILE
# include "s_externs.h"
#else
# include "c_externs.h"
#endif
#undef MATCH_C
unsigned char tolowertab[] =
{ 0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa,
0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14,
0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
0x1e, 0x1f,
' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')',
'*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
':', ';', '<', '=', '>', '?',
'@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
't', 'u', 'v', 'w', 'x', 'y', 'z', '[', '\\', ']', '^',
'_',
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~',
0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9,
0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9,
0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
unsigned char touppertab[] =
{ 0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa,
0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14,
0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
0x1e, 0x1f,
' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')',
'*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
':', ';', '<', '=', '>', '?',
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^',
0x5f,
'`', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~',
0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9,
0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9,
0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };
unsigned char char_atribs[] = {
/* 0-7 */ CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL,
/* 8-12 */ CNTRL, CNTRL|SPACE, CNTRL|SPACE, CNTRL|SPACE, CNTRL|SPACE,
/* 13-15 */ CNTRL|SPACE, CNTRL, CNTRL,
/* 16-23 */ CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL,
/* 24-31 */ CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL,
/* space */ PRINT|SPACE,
/* !"#$%&'( */ PRINT, PRINT, PRINT, PRINT, PRINT, PRINT, PRINT, PRINT,
/* )*+,-./ */ PRINT, PRINT, PRINT, PRINT, PRINT, PRINT, PRINT,
/* 0123 */ PRINT|DIGIT, PRINT|DIGIT, PRINT|DIGIT, PRINT|DIGIT,
/* 4567 */ PRINT|DIGIT, PRINT|DIGIT, PRINT|DIGIT, PRINT|DIGIT,
/* 89:; */ PRINT|DIGIT, PRINT|DIGIT, PRINT, PRINT,
/* <=>? */ PRINT, PRINT, PRINT, PRINT,
/* @ */ PRINT,
/* ABC */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* DEF */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* GHI */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* JKL */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* MNO */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* PQR */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* STU */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* VWX */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* YZ[ */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* \]^ */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* _` */ PRINT, PRINT,
/* abc */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* def */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* ghi */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* jkl */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* mno */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* pqr */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* stu */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* vwx */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* yz{ */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* \}~ */ PRINT|ALPHA, PRINT|ALPHA, PRINT|ALPHA,
/* del */ 0,
/* 80-8f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* 90-9f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* a0-af */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* b0-bf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* c0-cf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* d0-df */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* e0-ef */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
/* f0-ff */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
#define MAX_ITERATIONS 512
/*
** Compare if a given string (name) matches the given
** mask (which can contain wild cards: '*' - match any
** number of chars, '?' - match any single character.
**
** return 0, if match
** 1, if no match
*/
/*
** match()
** Iterative matching function, rather than recursive.
** Written by Douglas A Lewis (dalewis@acsu.buffalo.edu)
*/
int match(mask, name)
char *mask, *name;
{
Reg u_char *m = (u_char *)mask, *n = (u_char *)name;
char *ma = mask, *na = name;
int wild = 0, q = 0, calls = 0;
if (!*mask)
return 1;
while (1)
{
#ifdef MAX_ITERATIONS
if (calls++ > MAX_ITERATIONS)
break;
#endif
if (*m == '*')
{
while (*m == '*')
m++;
wild = 1;
ma = (char *)m;
na = (char *)n;
}
if (!*m)
{
if (!*n)
return 0;
for (m--; (m > (u_char *)mask) && (*m == '?'); m--)
;
if ((m > (u_char *)mask) && (*m == '*') &&
(m[-1] != '\\'))
return 0;
if (!wild)
return 1;
m = (u_char *)ma;
n = (u_char *)++na;
}
else if (!*n)
return 1;
if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?')))
{
m++;
q = 1;
}
else
q = 0;
if ((tolower(*m) != tolower(*n)) && ((*m != '?') || q))
{
if (!wild)
return 1;
m = (u_char *)ma;
n = (u_char *)++na;
}
else
{
if (*m)
m++;
if (*n)
n++;
}
}
return 1;
}
/*
** collapse a pattern string into minimal components.
** This particular version is "in place", so that it changes the pattern
** which is to be reduced to a "minimal" size.
*/
char *collapse(pattern)
char *pattern;
{
Reg char *s = pattern, *s1, *t;
if (BadPtr(pattern))
return pattern;
/*
* Collapse all \** into \*, \*[?]+\** into \*[?]+
*/
for (; *s; s++)
if (*s == '\\')
if (!*(s + 1))
break;
else
s++;
else if (*s == '*')
{
if (*(t = s1 = s + 1) == '*')
while (*t == '*')
t++;
else if (*t == '?')
for (t++, s1++; *t == '*' || *t == '?'; t++)
if (*t == '?')
*s1++ = *t;
while ((*s1++ = *t++))
;
}
return pattern;
}
/*
** Performs case-insensitive comparison for two null-terminated strings
**
** returns 0, if s1 equal to s2
** <0, if s1 lexicographically less than s2
** >0, if s1 lexicographically greater than s2
*/
int mystrcasecmp(s1, s2)
char *s1;
char *s2;
{
Reg unsigned char *str1 = (unsigned char *)s1;
Reg unsigned char *str2 = (unsigned char *)s2;
Reg int res;
while ((res = toupper(*str1) - toupper(*str2)) == 0)
{
if (*str1 == '\0')
return 0;
str1++;
str2++;
}
return (res);
}
int mystrncasecmp(str1, str2, n)
char *str1;
char *str2;
int n;
{
Reg unsigned char *s1 = (unsigned char *)str1;
Reg unsigned char *s2 = (unsigned char *)str2;
Reg int res;
while ((res = toupper(*s1) - toupper(*s2)) == 0)
{
s1++; s2++; n--;
if (n == 0 || (*s1 == '\0' && *s2 == '\0'))
return 0;
}
return (res);
}
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