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https://github.com/unrealircd/unrealircd.git
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Bram Matthys
430 lines
11 KiB
C
430 lines
11 KiB
C
/*
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* Unreal Internet Relay Chat Daemon, src/match.c
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* Copyright (C) 1990 Jarkko Oikarinen
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "struct.h"
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#include "common.h"
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#include "sys.h"
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ID_Copyright("(C) 1990 Jarkko Oikarinen");
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/*
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* Compare if a given string (name) matches the given
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* mask (which can contain wild cards: '*' - match any
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* number of chars, '?' - match any single character.
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*
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* return 0, if match
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* 1, if no match
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*/
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#ifndef USE_LOCALE
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u_char touppertab[], tolowertab[];
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#define tolowertab2 tolowertab
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#endif
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#ifndef USE_LOCALE
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#define lc(x) tolowertab2[x] /* use mylowertab, because registers are FASTER */
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#else /* maybe in the old 4mb hard drive days but not anymore -- codemastr */
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#define lc(x) tolower(x)
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#endif
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/* Match routine for special cases where escaping is needed in a normal fashion.
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* Checks a string ('name') against a globbing(+more) pattern ('mask').
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* Original by Douglas A Lewis (dalewis@acsu.buffalo.edu).
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* Code based on hybrid7's version (match_esc()).
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* Various modifications by Bram Matthys (Syzop).
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* Instead of our previous code, this one is less optimized but actually _readable_ ;).
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* Modifications I (Syzop) had to do vs the hybrid7 code:
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* - Got rid of (u_char *) casts, since we already compile with
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* chars defaulting to unsigned [or else major things break] ;).
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* - Use 0 for match and non-zero for no match (a la strcmp), not the reverse.
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* - Support for '_'.
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* - Rip out support for '#'.
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*/
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int match_esc(const char *mask, const char *name)
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{
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const u_char *m = mask;
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const u_char *n = name;
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const u_char *ma = NULL;
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const u_char *na = name;
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while(1)
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{
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if (*m == '*')
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{
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while (*m == '*') /* collapse.. */
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m++;
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ma = m;
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na = n;
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}
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if (!*m)
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{
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if (!*n)
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return 0;
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if (!ma)
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return 1;
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for (m--; (m > (const u_char *)mask) && (*m == '?'); m--);
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if (*m == '*')
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return 0;
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m = ma;
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n = ++na;
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} else
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if (!*n)
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{
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while (*m == '*') /* collapse.. */
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m++;
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return (*m != 0);
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}
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if (*m != '?')
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{
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if (*m == '\\')
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if (!*++m)
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return 1; /* unfinished escape sequence */
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if ((lc(*m) != lc(*n)) && !((*m == '_') && (*n == ' ')))
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{
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if (!ma)
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return 1;
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m = ma;
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n = ++na;
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} else
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{
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m++;
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n++;
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}
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} else
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{
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m++;
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n++;
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}
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}
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return 1;
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}
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/** Same credit/copyright as match_esc() applies, except escaping removed.. ;p */
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static inline int match2(const char *mask, const char *name)
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{
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const u_char *m = mask;
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const u_char *n = name;
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const u_char *ma = NULL;
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const u_char *na = name;
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while(1)
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{
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if (*m == '*')
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{
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while (*m == '*') /* collapse.. */
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m++;
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ma = m;
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na = n;
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}
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if (!*m)
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{
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if (!*n)
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return 0;
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if (!ma)
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return 1;
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for (m--; (m > (const u_char *)mask) && (*m == '?'); m--);
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if (*m == '*')
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return 0;
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m = ma;
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n = ++na;
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} else
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if (!*n)
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{
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while (*m == '*') /* collapse.. */
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m++;
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return (*m != 0);
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}
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if ((lc(*m) != lc(*n)) && !((*m == '_') && (*n == ' ')) && (*m != '?'))
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{
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if (!ma)
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return 1;
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m = ma;
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n = ++na;
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} else
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{
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m++;
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n++;
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}
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}
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return 1;
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}
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/*
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* collapse a pattern string into minimal components.
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* This particular version is "in place", so that it changes the pattern
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* which is to be reduced to a "minimal" size.
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*/
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char *collapse(char *pattern)
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{
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char *s;
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char *s1;
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char *t;
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s = pattern;
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if (BadPtr(pattern))
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return pattern;
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/*
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* Collapse all \** into \*, \*[?]+\** into \*[?]+
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*/
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for (; *s; s++)
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if (*s == '\\')
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{
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if (!*(s + 1))
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break;
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else
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s++;
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}
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else if (*s == '*')
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{
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if (*(t = s1 = s + 1) == '*')
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while (*t == '*')
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t++;
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else if (*t == '?')
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for (t++, s1++; *t == '*' || *t == '?'; t++)
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if (*t == '?')
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*s1++ = *t;
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while ((*s1++ = *t++))
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;
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}
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return pattern;
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}
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/*
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* Case insensitive comparison of two NULL terminated strings.
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*
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* returns 0, if s1 equal to s2
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* <0, if s1 lexicographically less than s2
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* >0, if s1 lexicographically greater than s2
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*/
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int smycmp(const char *s1, const char *s2)
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{
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u_char *str1;
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u_char *str2;
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int res;
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str1 = (u_char *)s1;
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str2 = (u_char *)s2;
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while ((res = toupper(*str1) - toupper(*str2)) == 0)
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{
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if (*str1 == '\0')
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return 0;
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str1++;
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str2++;
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}
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return (res);
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}
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int myncmp(const char *str1, const char *str2, int n)
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{
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u_char *s1;
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u_char *s2;
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int res;
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s1 = (u_char *)str1;
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s2 = (u_char *)str2;
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while ((res = toupper(*s1) - toupper(*s2)) == 0)
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{
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s1++;
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s2++;
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n--;
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if (n == 0 || (*s1 == '\0' && *s2 == '\0'))
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return 0;
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}
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return (res);
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}
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#ifndef USE_LOCALE
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u_char tolowertab[] = {
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0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa,
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0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14,
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0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
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0x1e, 0x1f,
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' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')',
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'*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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':', ';', '<', '=', '>', '?',
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'@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
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'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
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't', 'u', 'v', 'w', 'x', 'y', 'z', '[', '\\', ']', '^',
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'_',
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'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
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'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
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't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~',
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0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
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0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
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0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
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0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
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0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
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0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9,
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0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
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0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
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0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
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0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
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0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9,
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0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
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};
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u_char touppertab[] = {
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0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa,
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0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14,
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0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
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0x1e, 0x1f,
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' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')',
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'*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
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'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
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'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^',
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0x5f,
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'`', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
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'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
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'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~',
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0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
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0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
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0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9,
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0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
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0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
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0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9,
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0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
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0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
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0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
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0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
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0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9,
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0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
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};
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#endif
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u_char char_atribs[] = {
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/* 0-7 */ CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL,
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/* 8-12 */ CNTRL, CNTRL | SPACE, CNTRL | SPACE, CNTRL | SPACE,
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CNTRL | SPACE,
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/* 13-15 */ CNTRL | SPACE, CNTRL, CNTRL,
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/* 16-23 */ CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL,
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/* 24-31 */ CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL, CNTRL,
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/* space */ PRINT | SPACE,
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/* !"#$%&'( */ PRINT, PRINT, PRINT, PRINT, PRINT, PRINT, PRINT, PRINT,
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/* )*+,-./ */ PRINT, PRINT, PRINT, PRINT, PRINT | ALLOW, PRINT | ALLOW,
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PRINT,
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/* 012 */ PRINT | DIGIT | ALLOW, PRINT | DIGIT | ALLOW,
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PRINT | DIGIT | ALLOW,
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/* 345 */ PRINT | DIGIT | ALLOW, PRINT | DIGIT | ALLOW,
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PRINT | DIGIT | ALLOW,
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/* 678 */ PRINT | DIGIT | ALLOW, PRINT | DIGIT | ALLOW,
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PRINT | DIGIT | ALLOW,
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/* 9:; */ PRINT | DIGIT | ALLOW, PRINT, PRINT,
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/* <=>? */ PRINT, PRINT, PRINT, PRINT,
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/* @ */ PRINT,
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/* ABC */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* DEF */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* GHI */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* JKL */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* MNO */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* PQR */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* STU */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* VWX */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* YZ[ */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW, PRINT,
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/* \]^ */ PRINT, PRINT, PRINT,
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/* _` */ PRINT | ALLOW, PRINT,
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/* abc */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* def */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* ghi */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* jkl */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* mno */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* pqr */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* stu */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* vwx */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW,
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PRINT | ALPHA | ALLOW,
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/* yz{ */ PRINT | ALPHA | ALLOW, PRINT | ALPHA | ALLOW, PRINT,
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/* |}~ */ PRINT, PRINT, PRINT,
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/* del */ 0,
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/* 80-8f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* 90-9f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* a0-af */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* b0-bf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* c0-cf */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* d0-df */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* e0-ef */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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/* f0-ff */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/* Old match() */
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int _match(const char *mask, const char *name) {
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return match2(mask,name);
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}
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/* Old match() plus some optimizations from bahamut */
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int match(const char *mask, const char *name) {
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if (mask[0] == '*' && mask[1] == '!') {
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mask += 2;
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while (*name != '!' && *name)
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name++;
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if (!*name)
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return 1;
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name++;
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}
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|
|
if (mask[0] == '*' && mask[1] == '@') {
|
|
mask += 2;
|
|
while (*name != '@' && *name)
|
|
name++;
|
|
if (!*name)
|
|
return 1;
|
|
name++;
|
|
}
|
|
return match2(mask,name);
|
|
}
|