/* * Copyright (c) 1989, 1993, 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Guido van Rossum. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright 2010 Nexenta Systems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6. * Compares a filename or pathname to a pattern. */ /* * Some notes on multibyte character support: * 1. Patterns with illegal byte sequences match nothing. * 2. Illegal byte sequences in the "string" argument are handled by treating * them as single-byte characters with a value of the first byte of the * sequence cast to wchar_t. * 3. Multibyte conversion state objects (mbstate_t) are passed around and * used for most, but not all, conversions. Further work will be required * to support state-dependent encodings. */ #include "lint.h" #include #include #include #include #include #include "collate.h" #define EOS '\0' #define RANGE_MATCH 1 #define RANGE_NOMATCH 0 #define RANGE_ERROR (-1) static int rangematch(const char *, wchar_t, int, char **, mbstate_t *); static int fnmatch1(const char *, const char *, const char *, int, mbstate_t, mbstate_t); int fnmatch(pattern, string, flags) const char *pattern, *string; int flags; { static const mbstate_t initial = { 0 }; return (fnmatch1(pattern, string, string, flags, initial, initial)); } static int fnmatch1(const char *pattern, const char *string, const char *stringstart, int flags, mbstate_t patmbs, mbstate_t strmbs) { char *newp; char c; wchar_t pc, sc; size_t pclen, sclen; for (;;) { pclen = mbrtowc(&pc, pattern, MB_LEN_MAX, &patmbs); if (pclen == (size_t)-1 || pclen == (size_t)-2) return (FNM_NOMATCH); pattern += pclen; sclen = mbrtowc(&sc, string, MB_LEN_MAX, &strmbs); if (sclen == (size_t)-1 || sclen == (size_t)-2) { sc = (unsigned char)*string; sclen = 1; (void) memset(&strmbs, 0, sizeof (strmbs)); } switch (pc) { case EOS: /* * Removed FNM_LEADING_DIR, as it is not present * on Solaris. */ return (sc == EOS ? 0 : FNM_NOMATCH); case '?': if (sc == EOS) return (FNM_NOMATCH); if (sc == '/' && (flags & FNM_PATHNAME)) return (FNM_NOMATCH); if (sc == '.' && (flags & FNM_PERIOD) && (string == stringstart || ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) return (FNM_NOMATCH); string += sclen; break; case '*': c = *pattern; /* Collapse multiple stars. */ while (c == '*') c = *++pattern; if (sc == '.' && (flags & FNM_PERIOD) && (string == stringstart || ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) return (FNM_NOMATCH); /* Optimize for pattern with * at end or before /. */ if (c == EOS) if (flags & FNM_PATHNAME) return (strchr(string, '/') == NULL ? 0 : FNM_NOMATCH); else return (0); else if (c == '/' && flags & FNM_PATHNAME) { if ((string = strchr(string, '/')) == NULL) return (FNM_NOMATCH); break; } /* General case, use recursion. */ while (sc != EOS) { if (!fnmatch1(pattern, string, stringstart, flags, patmbs, strmbs)) return (0); sclen = mbrtowc(&sc, string, MB_LEN_MAX, &strmbs); if (sclen == (size_t)-1 || sclen == (size_t)-2) { sc = (unsigned char)*string; sclen = 1; (void) memset(&strmbs, 0, sizeof (strmbs)); } if (sc == '/' && flags & FNM_PATHNAME) break; string += sclen; } return (FNM_NOMATCH); case '[': if (sc == EOS) return (FNM_NOMATCH); if (sc == '/' && (flags & FNM_PATHNAME)) return (FNM_NOMATCH); if (sc == '.' && (flags & FNM_PERIOD) && (string == stringstart || ((flags & FNM_PATHNAME) && *(string - 1) == '/'))) return (FNM_NOMATCH); switch (rangematch(pattern, sc, flags, &newp, &patmbs)) { case RANGE_ERROR: goto norm; case RANGE_MATCH: pattern = newp; break; case RANGE_NOMATCH: return (FNM_NOMATCH); } string += sclen; break; case '\\': if (!(flags & FNM_NOESCAPE)) { pclen = mbrtowc(&pc, pattern, MB_LEN_MAX, &patmbs); if (pclen == (size_t)-1 || pclen == (size_t)-2) return (FNM_NOMATCH); if (pclen == 0) pc = '\\'; pattern += pclen; } /* FALLTHROUGH */ default: norm: if (pc == sc) string += sclen; else if ((flags & FNM_IGNORECASE) && (towlower(pc) == towlower(sc))) string += sclen; else return (FNM_NOMATCH); break; } } /* NOTREACHED */ } static int rangematch(pattern, test, flags, newp, patmbs) const char *pattern; wchar_t test; int flags; char **newp; mbstate_t *patmbs; { int negate, ok; wchar_t c, c2; size_t pclen; const char *origpat; /* * A bracket expression starting with an unquoted circumflex * character produces unspecified results (IEEE 1003.2-1992, * 3.13.2). This implementation treats it like '!', for * consistency with the regular expression syntax. * J.T. Conklin (conklin@ngai.kaleida.com) */ if ((negate = (*pattern == '!' || *pattern == '^')) != 0) ++pattern; if (flags & FNM_IGNORECASE) test = towlower(test); /* * A right bracket shall lose its special meaning and represent * itself in a bracket expression if it occurs first in the list. * -- POSIX.2 2.8.3.2 */ ok = 0; origpat = pattern; for (;;) { if (*pattern == ']' && pattern > origpat) { pattern++; break; } else if (*pattern == '\0') { return (RANGE_ERROR); } else if (*pattern == '/' && (flags & FNM_PATHNAME)) { return (RANGE_NOMATCH); } else if (*pattern == '\\' && !(flags & FNM_NOESCAPE)) pattern++; pclen = mbrtowc(&c, pattern, MB_LEN_MAX, patmbs); if (pclen == (size_t)-1 || pclen == (size_t)-2) return (RANGE_NOMATCH); pattern += pclen; if (flags & FNM_IGNORECASE) c = towlower(c); if (*pattern == '-' && *(pattern + 1) != EOS && *(pattern + 1) != ']') { if (*++pattern == '\\' && !(flags & FNM_NOESCAPE)) if (*pattern != EOS) pattern++; pclen = mbrtowc(&c2, pattern, MB_LEN_MAX, patmbs); if (pclen == (size_t)-1 || pclen == (size_t)-2) return (RANGE_NOMATCH); pattern += pclen; if (c2 == EOS) return (RANGE_ERROR); if (flags & FNM_IGNORECASE) c2 = towlower(c2); if (__collate_load_error ? c <= test && test <= c2 : __collate_range_cmp(c, test) <= 0 && __collate_range_cmp(test, c2) <= 0) ok = 1; } else if (c == test) ok = 1; } *newp = (char *)pattern; return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH); }