1d6ea0262SWarner Losh /*- 258f0484fSRodney W. Grimes * Copyright (c) 1989, 1993, 1994 358f0484fSRodney W. Grimes * The Regents of the University of California. All rights reserved. 458f0484fSRodney W. Grimes * 558f0484fSRodney W. Grimes * This code is derived from software contributed to Berkeley by 658f0484fSRodney W. Grimes * Guido van Rossum. 758f0484fSRodney W. Grimes * 858f0484fSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 958f0484fSRodney W. Grimes * modification, are permitted provided that the following conditions 1058f0484fSRodney W. Grimes * are met: 1158f0484fSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 1258f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 1358f0484fSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 1458f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 1558f0484fSRodney W. Grimes * documentation and/or other materials provided with the distribution. 1658f0484fSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 1758f0484fSRodney W. Grimes * may be used to endorse or promote products derived from this software 1858f0484fSRodney W. Grimes * without specific prior written permission. 1958f0484fSRodney W. Grimes * 2058f0484fSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2158f0484fSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2258f0484fSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2358f0484fSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2458f0484fSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2558f0484fSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2658f0484fSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2758f0484fSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2858f0484fSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2958f0484fSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3058f0484fSRodney W. Grimes * SUCH DAMAGE. 3158f0484fSRodney W. Grimes */ 3258f0484fSRodney W. Grimes 33ab0de15bSDavid E. O'Brien #include <sys/cdefs.h> 34ab0de15bSDavid E. O'Brien __FBSDID("$FreeBSD$"); 35ab0de15bSDavid E. O'Brien 3658f0484fSRodney W. Grimes /* 3758f0484fSRodney W. Grimes * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6. 3858f0484fSRodney W. Grimes * Compares a filename or pathname to a pattern. 3958f0484fSRodney W. Grimes */ 4058f0484fSRodney W. Grimes 4120a6cb8cSDima Dorfman #include <sys/param.h> 4220a6cb8cSDima Dorfman #include <sys/ctype.h> 4320a6cb8cSDima Dorfman #include <sys/libkern.h> 44edcfa072SAndrey A. Chernov 4558f0484fSRodney W. Grimes #define EOS '\0' 4658f0484fSRodney W. Grimes 47e2dbbd9eSAndrey A. Chernov #define RANGE_MATCH 1 48e2dbbd9eSAndrey A. Chernov #define RANGE_NOMATCH 0 49e2dbbd9eSAndrey A. Chernov #define RANGE_ERROR (-1) 50e2dbbd9eSAndrey A. Chernov 51b231cb39SDavid E. O'Brien static int rangematch(const char *, char, int, char **); 5258f0484fSRodney W. Grimes 5358f0484fSRodney W. Grimes int 54b059cbd3SRobert Watson fnmatch(const char *pattern, const char *string, int flags) 5558f0484fSRodney W. Grimes { 5658f0484fSRodney W. Grimes const char *stringstart; 57e2dbbd9eSAndrey A. Chernov char *newp; 5858f0484fSRodney W. Grimes char c, test; 5958f0484fSRodney W. Grimes 6058f0484fSRodney W. Grimes for (stringstart = string;;) 6158f0484fSRodney W. Grimes switch (c = *pattern++) { 6258f0484fSRodney W. Grimes case EOS: 633deeb59dSAndrey A. Chernov if ((flags & FNM_LEADING_DIR) && *string == '/') 643deeb59dSAndrey A. Chernov return (0); 6558f0484fSRodney W. Grimes return (*string == EOS ? 0 : FNM_NOMATCH); 6658f0484fSRodney W. Grimes case '?': 6758f0484fSRodney W. Grimes if (*string == EOS) 6858f0484fSRodney W. Grimes return (FNM_NOMATCH); 6958f0484fSRodney W. Grimes if (*string == '/' && (flags & FNM_PATHNAME)) 7058f0484fSRodney W. Grimes return (FNM_NOMATCH); 7158f0484fSRodney W. Grimes if (*string == '.' && (flags & FNM_PERIOD) && 7258f0484fSRodney W. Grimes (string == stringstart || 7358f0484fSRodney W. Grimes ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) 7458f0484fSRodney W. Grimes return (FNM_NOMATCH); 7558f0484fSRodney W. Grimes ++string; 7658f0484fSRodney W. Grimes break; 7758f0484fSRodney W. Grimes case '*': 7858f0484fSRodney W. Grimes c = *pattern; 7958f0484fSRodney W. Grimes /* Collapse multiple stars. */ 8058f0484fSRodney W. Grimes while (c == '*') 8158f0484fSRodney W. Grimes c = *++pattern; 8258f0484fSRodney W. Grimes 8358f0484fSRodney W. Grimes if (*string == '.' && (flags & FNM_PERIOD) && 8458f0484fSRodney W. Grimes (string == stringstart || 8558f0484fSRodney W. Grimes ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) 8658f0484fSRodney W. Grimes return (FNM_NOMATCH); 8758f0484fSRodney W. Grimes 8858f0484fSRodney W. Grimes /* Optimize for pattern with * at end or before /. */ 8958f0484fSRodney W. Grimes if (c == EOS) 9058f0484fSRodney W. Grimes if (flags & FNM_PATHNAME) 91298c8e3dSJohn Polstra return ((flags & FNM_LEADING_DIR) || 92*dc15eac0SEd Schouten strchr(string, '/') == NULL ? 9358f0484fSRodney W. Grimes 0 : FNM_NOMATCH); 9458f0484fSRodney W. Grimes else 9558f0484fSRodney W. Grimes return (0); 9658f0484fSRodney W. Grimes else if (c == '/' && flags & FNM_PATHNAME) { 97*dc15eac0SEd Schouten if ((string = strchr(string, '/')) == NULL) 9858f0484fSRodney W. Grimes return (FNM_NOMATCH); 9958f0484fSRodney W. Grimes break; 10058f0484fSRodney W. Grimes } 10158f0484fSRodney W. Grimes 10258f0484fSRodney W. Grimes /* General case, use recursion. */ 10358f0484fSRodney W. Grimes while ((test = *string) != EOS) { 10458f0484fSRodney W. Grimes if (!fnmatch(pattern, string, flags & ~FNM_PERIOD)) 10558f0484fSRodney W. Grimes return (0); 10658f0484fSRodney W. Grimes if (test == '/' && flags & FNM_PATHNAME) 10758f0484fSRodney W. Grimes break; 10858f0484fSRodney W. Grimes ++string; 10958f0484fSRodney W. Grimes } 11058f0484fSRodney W. Grimes return (FNM_NOMATCH); 11158f0484fSRodney W. Grimes case '[': 11258f0484fSRodney W. Grimes if (*string == EOS) 11358f0484fSRodney W. Grimes return (FNM_NOMATCH); 11405a068e6SAndrey A. Chernov if (*string == '/' && (flags & FNM_PATHNAME)) 11558f0484fSRodney W. Grimes return (FNM_NOMATCH); 11605a068e6SAndrey A. Chernov if (*string == '.' && (flags & FNM_PERIOD) && 11705a068e6SAndrey A. Chernov (string == stringstart || 11805a068e6SAndrey A. Chernov ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) 11905a068e6SAndrey A. Chernov return (FNM_NOMATCH); 12005a068e6SAndrey A. Chernov 121e2dbbd9eSAndrey A. Chernov switch (rangematch(pattern, *string, flags, &newp)) { 122e2dbbd9eSAndrey A. Chernov case RANGE_ERROR: 123e2dbbd9eSAndrey A. Chernov goto norm; 124e2dbbd9eSAndrey A. Chernov case RANGE_MATCH: 125e2dbbd9eSAndrey A. Chernov pattern = newp; 126e2dbbd9eSAndrey A. Chernov break; 127e2dbbd9eSAndrey A. Chernov case RANGE_NOMATCH: 12858f0484fSRodney W. Grimes return (FNM_NOMATCH); 129e2dbbd9eSAndrey A. Chernov } 13058f0484fSRodney W. Grimes ++string; 13158f0484fSRodney W. Grimes break; 13258f0484fSRodney W. Grimes case '\\': 13358f0484fSRodney W. Grimes if (!(flags & FNM_NOESCAPE)) { 13458f0484fSRodney W. Grimes if ((c = *pattern++) == EOS) { 13558f0484fSRodney W. Grimes c = '\\'; 13658f0484fSRodney W. Grimes --pattern; 13758f0484fSRodney W. Grimes } 13858f0484fSRodney W. Grimes } 13958f0484fSRodney W. Grimes /* FALLTHROUGH */ 14058f0484fSRodney W. Grimes default: 141e2dbbd9eSAndrey A. Chernov norm: 14295e4966cSWolfram Schneider if (c == *string) 14395e4966cSWolfram Schneider ; 1443deeb59dSAndrey A. Chernov else if ((flags & FNM_CASEFOLD) && 1453deeb59dSAndrey A. Chernov (tolower((unsigned char)c) == 1463deeb59dSAndrey A. Chernov tolower((unsigned char)*string))) 14795e4966cSWolfram Schneider ; 14895e4966cSWolfram Schneider else 14958f0484fSRodney W. Grimes return (FNM_NOMATCH); 15095e4966cSWolfram Schneider string++; 15158f0484fSRodney W. Grimes break; 15258f0484fSRodney W. Grimes } 15358f0484fSRodney W. Grimes /* NOTREACHED */ 15458f0484fSRodney W. Grimes } 15558f0484fSRodney W. Grimes 156e2dbbd9eSAndrey A. Chernov static int 157b059cbd3SRobert Watson rangematch(const char *pattern, char test, int flags, char **newp) 15858f0484fSRodney W. Grimes { 159e728d480SAndrey A. Chernov int negate, ok; 16058f0484fSRodney W. Grimes char c, c2; 16158f0484fSRodney W. Grimes 16258f0484fSRodney W. Grimes /* 16358f0484fSRodney W. Grimes * A bracket expression starting with an unquoted circumflex 16458f0484fSRodney W. Grimes * character produces unspecified results (IEEE 1003.2-1992, 16558f0484fSRodney W. Grimes * 3.13.2). This implementation treats it like '!', for 16658f0484fSRodney W. Grimes * consistency with the regular expression syntax. 16758f0484fSRodney W. Grimes * J.T. Conklin (conklin@ngai.kaleida.com) 16858f0484fSRodney W. Grimes */ 16905a068e6SAndrey A. Chernov if ( (negate = (*pattern == '!' || *pattern == '^')) ) 17058f0484fSRodney W. Grimes ++pattern; 17158f0484fSRodney W. Grimes 1723deeb59dSAndrey A. Chernov if (flags & FNM_CASEFOLD) 1733deeb59dSAndrey A. Chernov test = tolower((unsigned char)test); 17495e4966cSWolfram Schneider 175e2dbbd9eSAndrey A. Chernov /* 176e2dbbd9eSAndrey A. Chernov * A right bracket shall lose its special meaning and represent 177e2dbbd9eSAndrey A. Chernov * itself in a bracket expression if it occurs first in the list. 178e2dbbd9eSAndrey A. Chernov * -- POSIX.2 2.8.3.2 179e2dbbd9eSAndrey A. Chernov */ 180e728d480SAndrey A. Chernov ok = 0; 181e728d480SAndrey A. Chernov c = *pattern++; 182e728d480SAndrey A. Chernov do { 18358f0484fSRodney W. Grimes if (c == '\\' && !(flags & FNM_NOESCAPE)) 18458f0484fSRodney W. Grimes c = *pattern++; 18558f0484fSRodney W. Grimes if (c == EOS) 186e2dbbd9eSAndrey A. Chernov return (RANGE_ERROR); 18795e4966cSWolfram Schneider 18805a068e6SAndrey A. Chernov if (c == '/' && (flags & FNM_PATHNAME)) 18905a068e6SAndrey A. Chernov return (RANGE_NOMATCH); 19005a068e6SAndrey A. Chernov 1913deeb59dSAndrey A. Chernov if (flags & FNM_CASEFOLD) 1923deeb59dSAndrey A. Chernov c = tolower((unsigned char)c); 19395e4966cSWolfram Schneider 19458f0484fSRodney W. Grimes if (*pattern == '-' 19558f0484fSRodney W. Grimes && (c2 = *(pattern+1)) != EOS && c2 != ']') { 19658f0484fSRodney W. Grimes pattern += 2; 19758f0484fSRodney W. Grimes if (c2 == '\\' && !(flags & FNM_NOESCAPE)) 19858f0484fSRodney W. Grimes c2 = *pattern++; 19958f0484fSRodney W. Grimes if (c2 == EOS) 200e2dbbd9eSAndrey A. Chernov return (RANGE_ERROR); 20195e4966cSWolfram Schneider 2023deeb59dSAndrey A. Chernov if (flags & FNM_CASEFOLD) 2033deeb59dSAndrey A. Chernov c2 = tolower((unsigned char)c2); 20495e4966cSWolfram Schneider 20520a6cb8cSDima Dorfman if (c <= test && test <= c2) 20658f0484fSRodney W. Grimes ok = 1; 20758f0484fSRodney W. Grimes } else if (c == test) 20858f0484fSRodney W. Grimes ok = 1; 209e728d480SAndrey A. Chernov } while ((c = *pattern++) != ']'); 210e728d480SAndrey A. Chernov 21120a6cb8cSDima Dorfman *newp = (char *)(uintptr_t)pattern; 212e2dbbd9eSAndrey A. Chernov return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH); 21358f0484fSRodney W. Grimes } 214