glob.c revision 227753
11573Srgrimes/* 21573Srgrimes * Copyright (c) 1989, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * This code is derived from software contributed to Berkeley by 61573Srgrimes * Guido van Rossum. 71573Srgrimes * 8227753Stheraven * Copyright (c) 2011 The FreeBSD Foundation 9227753Stheraven * All rights reserved. 10227753Stheraven * Portions of this software were developed by David Chisnall 11227753Stheraven * under sponsorship from the FreeBSD Foundation. 12227753Stheraven * 131573Srgrimes * Redistribution and use in source and binary forms, with or without 141573Srgrimes * modification, are permitted provided that the following conditions 151573Srgrimes * are met: 161573Srgrimes * 1. Redistributions of source code must retain the above copyright 171573Srgrimes * notice, this list of conditions and the following disclaimer. 181573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 191573Srgrimes * notice, this list of conditions and the following disclaimer in the 201573Srgrimes * documentation and/or other materials provided with the distribution. 211573Srgrimes * 4. Neither the name of the University nor the names of its contributors 221573Srgrimes * may be used to endorse or promote products derived from this software 231573Srgrimes * without specific prior written permission. 241573Srgrimes * 251573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 261573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 271573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 281573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 291573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 301573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 311573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 321573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 331573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 341573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 351573Srgrimes * SUCH DAMAGE. 361573Srgrimes */ 371573Srgrimes 381573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 391573Srgrimesstatic char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; 401573Srgrimes#endif /* LIBC_SCCS and not lint */ 4190045Sobrien#include <sys/cdefs.h> 4290045Sobrien__FBSDID("$FreeBSD: head/lib/libc/gen/glob.c 227753 2011-11-20 14:45:42Z theraven $"); 431573Srgrimes 441573Srgrimes/* 451573Srgrimes * glob(3) -- a superset of the one defined in POSIX 1003.2. 461573Srgrimes * 471573Srgrimes * The [!...] convention to negate a range is supported (SysV, Posix, ksh). 481573Srgrimes * 491573Srgrimes * Optional extra services, controlled by flags not defined by POSIX: 501573Srgrimes * 511573Srgrimes * GLOB_QUOTE: 521573Srgrimes * Escaping convention: \ inhibits any special meaning the following 531573Srgrimes * character might have (except \ at end of string is retained). 541573Srgrimes * GLOB_MAGCHAR: 551573Srgrimes * Set in gl_flags if pattern contained a globbing character. 561573Srgrimes * GLOB_NOMAGIC: 571573Srgrimes * Same as GLOB_NOCHECK, but it will only append pattern if it did 581573Srgrimes * not contain any magic characters. [Used in csh style globbing] 591573Srgrimes * GLOB_ALTDIRFUNC: 601573Srgrimes * Use alternately specified directory access functions. 611573Srgrimes * GLOB_TILDE: 621573Srgrimes * expand ~user/foo to the /home/dir/of/user/foo 631573Srgrimes * GLOB_BRACE: 648870Srgrimes * expand {1,2}{a,b} to 1a 1b 2a 2b 651573Srgrimes * gl_matchc: 661573Srgrimes * Number of matches in the current invocation of glob. 671573Srgrimes */ 681573Srgrimes 69132817Stjr/* 70132817Stjr * Some notes on multibyte character support: 71132817Stjr * 1. Patterns with illegal byte sequences match nothing - even if 72132817Stjr * GLOB_NOCHECK is specified. 73132817Stjr * 2. Illegal byte sequences in filenames are handled by treating them as 74132817Stjr * single-byte characters with a value of the first byte of the sequence 75132817Stjr * cast to wchar_t. 76132817Stjr * 3. State-dependent encodings are not currently supported. 77132817Stjr */ 78132817Stjr 791573Srgrimes#include <sys/param.h> 801573Srgrimes#include <sys/stat.h> 811573Srgrimes 821573Srgrimes#include <ctype.h> 831573Srgrimes#include <dirent.h> 841573Srgrimes#include <errno.h> 851573Srgrimes#include <glob.h> 86132817Stjr#include <limits.h> 871573Srgrimes#include <pwd.h> 88132817Stjr#include <stdint.h> 891573Srgrimes#include <stdio.h> 901573Srgrimes#include <stdlib.h> 911573Srgrimes#include <string.h> 921573Srgrimes#include <unistd.h> 93132817Stjr#include <wchar.h> 941573Srgrimes 9519276Sache#include "collate.h" 9619276Sache 971573Srgrimes#define DOLLAR '$' 981573Srgrimes#define DOT '.' 991573Srgrimes#define EOS '\0' 1001573Srgrimes#define LBRACKET '[' 1011573Srgrimes#define NOT '!' 1021573Srgrimes#define QUESTION '?' 1031573Srgrimes#define QUOTE '\\' 1041573Srgrimes#define RANGE '-' 1051573Srgrimes#define RBRACKET ']' 1061573Srgrimes#define SEP '/' 1071573Srgrimes#define STAR '*' 1081573Srgrimes#define TILDE '~' 1091573Srgrimes#define UNDERSCORE '_' 1101573Srgrimes#define LBRACE '{' 1111573Srgrimes#define RBRACE '}' 1121573Srgrimes#define SLASH '/' 1131573Srgrimes#define COMMA ',' 1141573Srgrimes 1151573Srgrimes#ifndef DEBUG 1161573Srgrimes 117132817Stjr#define M_QUOTE 0x8000000000ULL 118132817Stjr#define M_PROTECT 0x4000000000ULL 119132817Stjr#define M_MASK 0xffffffffffULL 120132817Stjr#define M_CHAR 0x00ffffffffULL 1211573Srgrimes 122132817Stjrtypedef uint_fast64_t Char; 1231573Srgrimes 1241573Srgrimes#else 1251573Srgrimes 1261573Srgrimes#define M_QUOTE 0x80 1271573Srgrimes#define M_PROTECT 0x40 1281573Srgrimes#define M_MASK 0xff 129132817Stjr#define M_CHAR 0x7f 1301573Srgrimes 1311573Srgrimestypedef char Char; 1321573Srgrimes 1331573Srgrimes#endif 1341573Srgrimes 1351573Srgrimes 136132817Stjr#define CHAR(c) ((Char)((c)&M_CHAR)) 1371573Srgrimes#define META(c) ((Char)((c)|M_QUOTE)) 1381573Srgrimes#define M_ALL META('*') 1391573Srgrimes#define M_END META(']') 1401573Srgrimes#define M_NOT META('!') 1411573Srgrimes#define M_ONE META('?') 1421573Srgrimes#define M_RNG META('-') 1431573Srgrimes#define M_SET META('[') 1441573Srgrimes#define ismeta(c) (((c)&M_QUOTE) != 0) 1451573Srgrimes 1461573Srgrimes 14790045Sobrienstatic int compare(const void *, const void *); 148158812Sachestatic int g_Ctoc(const Char *, char *, size_t); 14990045Sobrienstatic int g_lstat(Char *, struct stat *, glob_t *); 15090045Sobrienstatic DIR *g_opendir(Char *, glob_t *); 151180021Smtmstatic const Char *g_strchr(const Char *, wchar_t); 1521573Srgrimes#ifdef notdef 15390045Sobrienstatic Char *g_strcat(Char *, const Char *); 1541573Srgrimes#endif 15590045Sobrienstatic int g_stat(Char *, struct stat *, glob_t *); 156158812Sachestatic int glob0(const Char *, glob_t *, size_t *); 157158812Sachestatic int glob1(Char *, glob_t *, size_t *); 158158812Sachestatic int glob2(Char *, Char *, Char *, Char *, glob_t *, size_t *); 159158812Sachestatic int glob3(Char *, Char *, Char *, Char *, Char *, glob_t *, size_t *); 160158812Sachestatic int globextend(const Char *, glob_t *, size_t *); 16174963Speterstatic const Char * 16290045Sobrien globtilde(const Char *, Char *, size_t, glob_t *); 163158812Sachestatic int globexp1(const Char *, glob_t *, size_t *); 164158812Sachestatic int globexp2(const Char *, const Char *, glob_t *, int *, size_t *); 16590045Sobrienstatic int match(Char *, Char *, Char *); 1661573Srgrimes#ifdef DEBUG 16790045Sobrienstatic void qprintf(const char *, Char *); 1681573Srgrimes#endif 1691573Srgrimes 1701573Srgrimesint 171159294Sdelphijglob(const char *pattern, int flags, int (*errfunc)(const char *, int), glob_t *pglob) 1721573Srgrimes{ 173159294Sdelphij const char *patnext; 174158812Sache size_t limit; 175132817Stjr Char *bufnext, *bufend, patbuf[MAXPATHLEN], prot; 176132817Stjr mbstate_t mbs; 177132817Stjr wchar_t wc; 178132817Stjr size_t clen; 1791573Srgrimes 180159294Sdelphij patnext = pattern; 1811573Srgrimes if (!(flags & GLOB_APPEND)) { 1821573Srgrimes pglob->gl_pathc = 0; 1831573Srgrimes pglob->gl_pathv = NULL; 1841573Srgrimes if (!(flags & GLOB_DOOFFS)) 1851573Srgrimes pglob->gl_offs = 0; 1861573Srgrimes } 18780525Smikeh if (flags & GLOB_LIMIT) { 18874469Sjlemon limit = pglob->gl_matchc; 18980525Smikeh if (limit == 0) 19080525Smikeh limit = ARG_MAX; 19180525Smikeh } else 19274469Sjlemon limit = 0; 1931573Srgrimes pglob->gl_flags = flags & ~GLOB_MAGCHAR; 1941573Srgrimes pglob->gl_errfunc = errfunc; 1951573Srgrimes pglob->gl_matchc = 0; 1961573Srgrimes 1971573Srgrimes bufnext = patbuf; 19874963Speter bufend = bufnext + MAXPATHLEN - 1; 199132817Stjr if (flags & GLOB_NOESCAPE) { 200132817Stjr memset(&mbs, 0, sizeof(mbs)); 201132817Stjr while (bufend - bufnext >= MB_CUR_MAX) { 202132817Stjr clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs); 203132817Stjr if (clen == (size_t)-1 || clen == (size_t)-2) 204132817Stjr return (GLOB_NOMATCH); 205132817Stjr else if (clen == 0) 206132817Stjr break; 207132817Stjr *bufnext++ = wc; 208132817Stjr patnext += clen; 209132817Stjr } 210132817Stjr } else { 2111573Srgrimes /* Protect the quoted characters. */ 212132817Stjr memset(&mbs, 0, sizeof(mbs)); 213132817Stjr while (bufend - bufnext >= MB_CUR_MAX) { 214132817Stjr if (*patnext == QUOTE) { 215132817Stjr if (*++patnext == EOS) { 216132817Stjr *bufnext++ = QUOTE | M_PROTECT; 217132817Stjr continue; 2181573Srgrimes } 219132817Stjr prot = M_PROTECT; 220132817Stjr } else 221132817Stjr prot = 0; 222132817Stjr clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs); 223132817Stjr if (clen == (size_t)-1 || clen == (size_t)-2) 224132817Stjr return (GLOB_NOMATCH); 225132817Stjr else if (clen == 0) 226132817Stjr break; 227132817Stjr *bufnext++ = wc | prot; 228132817Stjr patnext += clen; 229132817Stjr } 2301573Srgrimes } 2311573Srgrimes *bufnext = EOS; 2321573Srgrimes 2331573Srgrimes if (flags & GLOB_BRACE) 23474469Sjlemon return globexp1(patbuf, pglob, &limit); 2351573Srgrimes else 23674469Sjlemon return glob0(patbuf, pglob, &limit); 2371573Srgrimes} 2381573Srgrimes 2391573Srgrimes/* 2401573Srgrimes * Expand recursively a glob {} pattern. When there is no more expansion 2411573Srgrimes * invoke the standard globbing routine to glob the rest of the magic 2421573Srgrimes * characters 2431573Srgrimes */ 24474963Speterstatic int 245159294Sdelphijglobexp1(const Char *pattern, glob_t *pglob, size_t *limit) 2461573Srgrimes{ 2471573Srgrimes const Char* ptr = pattern; 2481573Srgrimes int rv; 2491573Srgrimes 2501573Srgrimes /* Protect a single {}, for find(1), like csh */ 2511573Srgrimes if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) 25274469Sjlemon return glob0(pattern, pglob, limit); 2531573Srgrimes 254180021Smtm while ((ptr = g_strchr(ptr, LBRACE)) != NULL) 25574469Sjlemon if (!globexp2(ptr, pattern, pglob, &rv, limit)) 2561573Srgrimes return rv; 2571573Srgrimes 25874469Sjlemon return glob0(pattern, pglob, limit); 2591573Srgrimes} 2601573Srgrimes 2611573Srgrimes 2621573Srgrimes/* 2631573Srgrimes * Recursive brace globbing helper. Tries to expand a single brace. 2641573Srgrimes * If it succeeds then it invokes globexp1 with the new pattern. 2651573Srgrimes * If it fails then it tries to glob the rest of the pattern and returns. 2661573Srgrimes */ 26774963Speterstatic int 268159294Sdelphijglobexp2(const Char *ptr, const Char *pattern, glob_t *pglob, int *rv, size_t *limit) 2691573Srgrimes{ 2701573Srgrimes int i; 2711573Srgrimes Char *lm, *ls; 272150137Sache const Char *pe, *pm, *pm1, *pl; 27374963Speter Char patbuf[MAXPATHLEN]; 2741573Srgrimes 2751573Srgrimes /* copy part up to the brace */ 2761573Srgrimes for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) 2771573Srgrimes continue; 27874963Speter *lm = EOS; 2791573Srgrimes ls = lm; 2801573Srgrimes 2811573Srgrimes /* Find the balanced brace */ 2821573Srgrimes for (i = 0, pe = ++ptr; *pe; pe++) 2831573Srgrimes if (*pe == LBRACKET) { 2841573Srgrimes /* Ignore everything between [] */ 2851573Srgrimes for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++) 2861573Srgrimes continue; 2871573Srgrimes if (*pe == EOS) { 2888870Srgrimes /* 2891573Srgrimes * We could not find a matching RBRACKET. 2901573Srgrimes * Ignore and just look for RBRACE 2911573Srgrimes */ 2921573Srgrimes pe = pm; 2931573Srgrimes } 2941573Srgrimes } 2951573Srgrimes else if (*pe == LBRACE) 2961573Srgrimes i++; 2971573Srgrimes else if (*pe == RBRACE) { 2981573Srgrimes if (i == 0) 2991573Srgrimes break; 3001573Srgrimes i--; 3011573Srgrimes } 3021573Srgrimes 3031573Srgrimes /* Non matching braces; just glob the pattern */ 3041573Srgrimes if (i != 0 || *pe == EOS) { 30574469Sjlemon *rv = glob0(patbuf, pglob, limit); 3061573Srgrimes return 0; 3071573Srgrimes } 3081573Srgrimes 3091573Srgrimes for (i = 0, pl = pm = ptr; pm <= pe; pm++) 3101573Srgrimes switch (*pm) { 3111573Srgrimes case LBRACKET: 3121573Srgrimes /* Ignore everything between [] */ 313150137Sache for (pm1 = pm++; *pm != RBRACKET && *pm != EOS; pm++) 3141573Srgrimes continue; 3151573Srgrimes if (*pm == EOS) { 3168870Srgrimes /* 3171573Srgrimes * We could not find a matching RBRACKET. 3181573Srgrimes * Ignore and just look for RBRACE 3191573Srgrimes */ 320150137Sache pm = pm1; 3211573Srgrimes } 3221573Srgrimes break; 3231573Srgrimes 3241573Srgrimes case LBRACE: 3251573Srgrimes i++; 3261573Srgrimes break; 3271573Srgrimes 3281573Srgrimes case RBRACE: 3291573Srgrimes if (i) { 3301573Srgrimes i--; 3311573Srgrimes break; 3321573Srgrimes } 3331573Srgrimes /* FALLTHROUGH */ 3341573Srgrimes case COMMA: 3351573Srgrimes if (i && *pm == COMMA) 3361573Srgrimes break; 3371573Srgrimes else { 3381573Srgrimes /* Append the current string */ 3391573Srgrimes for (lm = ls; (pl < pm); *lm++ = *pl++) 3401573Srgrimes continue; 3418870Srgrimes /* 3421573Srgrimes * Append the rest of the pattern after the 3431573Srgrimes * closing brace 3441573Srgrimes */ 3451573Srgrimes for (pl = pe + 1; (*lm++ = *pl++) != EOS;) 3461573Srgrimes continue; 3471573Srgrimes 3481573Srgrimes /* Expand the current pattern */ 3491573Srgrimes#ifdef DEBUG 3501573Srgrimes qprintf("globexp2:", patbuf); 3511573Srgrimes#endif 35274469Sjlemon *rv = globexp1(patbuf, pglob, limit); 3531573Srgrimes 3541573Srgrimes /* move after the comma, to the next string */ 3551573Srgrimes pl = pm + 1; 3561573Srgrimes } 3571573Srgrimes break; 3581573Srgrimes 3591573Srgrimes default: 3601573Srgrimes break; 3611573Srgrimes } 3621573Srgrimes *rv = 0; 3631573Srgrimes return 0; 3641573Srgrimes} 3651573Srgrimes 3661573Srgrimes 3671573Srgrimes 3681573Srgrimes/* 3691573Srgrimes * expand tilde from the passwd file. 3701573Srgrimes */ 3711573Srgrimesstatic const Char * 372159294Sdelphijglobtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob) 3731573Srgrimes{ 3741573Srgrimes struct passwd *pwd; 3751573Srgrimes char *h; 3761573Srgrimes const Char *p; 37724158Simp Char *b, *eb; 3781573Srgrimes 3791573Srgrimes if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE)) 3801573Srgrimes return pattern; 3811573Srgrimes 38224158Simp /* 38324158Simp * Copy up to the end of the string or / 38424158Simp */ 38524158Simp eb = &patbuf[patbuf_len - 1]; 38624158Simp for (p = pattern + 1, h = (char *) patbuf; 38724158Simp h < (char *)eb && *p && *p != SLASH; *h++ = *p++) 3881573Srgrimes continue; 3891573Srgrimes 3901573Srgrimes *h = EOS; 3911573Srgrimes 3921573Srgrimes if (((char *) patbuf)[0] == EOS) { 3938870Srgrimes /* 39428820Simp * handle a plain ~ or ~/ by expanding $HOME first (iff 39528820Simp * we're not running setuid or setgid) and then trying 39628820Simp * the password file 3971573Srgrimes */ 398121667Stjr if (issetugid() != 0 || 39933664Sjb (h = getenv("HOME")) == NULL) { 40028836Sache if (((h = getlogin()) != NULL && 40128836Sache (pwd = getpwnam(h)) != NULL) || 40228836Sache (pwd = getpwuid(getuid())) != NULL) 40328836Sache h = pwd->pw_dir; 40428836Sache else 4051573Srgrimes return pattern; 4061573Srgrimes } 4071573Srgrimes } 4081573Srgrimes else { 4091573Srgrimes /* 4101573Srgrimes * Expand a ~user 4111573Srgrimes */ 4121573Srgrimes if ((pwd = getpwnam((char*) patbuf)) == NULL) 4131573Srgrimes return pattern; 4141573Srgrimes else 4151573Srgrimes h = pwd->pw_dir; 4161573Srgrimes } 4171573Srgrimes 4181573Srgrimes /* Copy the home directory */ 41924158Simp for (b = patbuf; b < eb && *h; *b++ = *h++) 4201573Srgrimes continue; 4218870Srgrimes 4221573Srgrimes /* Append the rest of the pattern */ 42324158Simp while (b < eb && (*b++ = *p++) != EOS) 4241573Srgrimes continue; 42524158Simp *b = EOS; 4261573Srgrimes 4271573Srgrimes return patbuf; 4281573Srgrimes} 4291573Srgrimes 4308870Srgrimes 4311573Srgrimes/* 4321573Srgrimes * The main glob() routine: compiles the pattern (optionally processing 4331573Srgrimes * quotes), calls glob1() to do the real pattern matching, and finally 4341573Srgrimes * sorts the list (unless unsorted operation is requested). Returns 0 435100217Smikeh * if things went well, nonzero if errors occurred. 4361573Srgrimes */ 4371573Srgrimesstatic int 438159294Sdelphijglob0(const Char *pattern, glob_t *pglob, size_t *limit) 4391573Srgrimes{ 4401573Srgrimes const Char *qpatnext; 441207981Sgordon int err; 442158812Sache size_t oldpathc; 443207981Sgordon Char *bufnext, c, patbuf[MAXPATHLEN]; 4441573Srgrimes 44574963Speter qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob); 4461573Srgrimes oldpathc = pglob->gl_pathc; 4471573Srgrimes bufnext = patbuf; 4481573Srgrimes 4491573Srgrimes /* We don't need to check for buffer overflow any more. */ 4501573Srgrimes while ((c = *qpatnext++) != EOS) { 4511573Srgrimes switch (c) { 4521573Srgrimes case LBRACKET: 4531573Srgrimes c = *qpatnext; 4541573Srgrimes if (c == NOT) 4551573Srgrimes ++qpatnext; 4561573Srgrimes if (*qpatnext == EOS || 457180021Smtm g_strchr(qpatnext+1, RBRACKET) == NULL) { 4581573Srgrimes *bufnext++ = LBRACKET; 4591573Srgrimes if (c == NOT) 4601573Srgrimes --qpatnext; 4611573Srgrimes break; 4621573Srgrimes } 4631573Srgrimes *bufnext++ = M_SET; 4641573Srgrimes if (c == NOT) 4651573Srgrimes *bufnext++ = M_NOT; 4661573Srgrimes c = *qpatnext++; 4671573Srgrimes do { 4681573Srgrimes *bufnext++ = CHAR(c); 4691573Srgrimes if (*qpatnext == RANGE && 4701573Srgrimes (c = qpatnext[1]) != RBRACKET) { 4711573Srgrimes *bufnext++ = M_RNG; 4721573Srgrimes *bufnext++ = CHAR(c); 4731573Srgrimes qpatnext += 2; 4741573Srgrimes } 4751573Srgrimes } while ((c = *qpatnext++) != RBRACKET); 4761573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4771573Srgrimes *bufnext++ = M_END; 4781573Srgrimes break; 4791573Srgrimes case QUESTION: 4801573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4811573Srgrimes *bufnext++ = M_ONE; 4821573Srgrimes break; 4831573Srgrimes case STAR: 4841573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4858870Srgrimes /* collapse adjacent stars to one, 4861573Srgrimes * to avoid exponential behavior 4871573Srgrimes */ 4881573Srgrimes if (bufnext == patbuf || bufnext[-1] != M_ALL) 4891573Srgrimes *bufnext++ = M_ALL; 4901573Srgrimes break; 4911573Srgrimes default: 4921573Srgrimes *bufnext++ = CHAR(c); 4931573Srgrimes break; 4941573Srgrimes } 4951573Srgrimes } 4961573Srgrimes *bufnext = EOS; 4971573Srgrimes#ifdef DEBUG 4981573Srgrimes qprintf("glob0:", patbuf); 4991573Srgrimes#endif 5001573Srgrimes 50174469Sjlemon if ((err = glob1(patbuf, pglob, limit)) != 0) 5021573Srgrimes return(err); 5031573Srgrimes 5041573Srgrimes /* 5058870Srgrimes * If there was no match we are going to append the pattern 5061573Srgrimes * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified 5071573Srgrimes * and the pattern did not contain any magic characters 5081573Srgrimes * GLOB_NOMAGIC is there just for compatibility with csh. 5091573Srgrimes */ 510100217Smikeh if (pglob->gl_pathc == oldpathc) { 511100217Smikeh if (((pglob->gl_flags & GLOB_NOCHECK) || 512100217Smikeh ((pglob->gl_flags & GLOB_NOMAGIC) && 513100217Smikeh !(pglob->gl_flags & GLOB_MAGCHAR)))) 514100217Smikeh return(globextend(pattern, pglob, limit)); 515100217Smikeh else 516100217Smikeh return(GLOB_NOMATCH); 517100217Smikeh } 518100217Smikeh if (!(pglob->gl_flags & GLOB_NOSORT)) 5191573Srgrimes qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, 5201573Srgrimes pglob->gl_pathc - oldpathc, sizeof(char *), compare); 5211573Srgrimes return(0); 5221573Srgrimes} 5231573Srgrimes 5241573Srgrimesstatic int 525159294Sdelphijcompare(const void *p, const void *q) 5261573Srgrimes{ 5271573Srgrimes return(strcmp(*(char **)p, *(char **)q)); 5281573Srgrimes} 5291573Srgrimes 5301573Srgrimesstatic int 531159294Sdelphijglob1(Char *pattern, glob_t *pglob, size_t *limit) 5321573Srgrimes{ 53374963Speter Char pathbuf[MAXPATHLEN]; 5341573Srgrimes 5351573Srgrimes /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ 5361573Srgrimes if (*pattern == EOS) 5371573Srgrimes return(0); 53874963Speter return(glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1, 53974963Speter pattern, pglob, limit)); 5401573Srgrimes} 5411573Srgrimes 5421573Srgrimes/* 5431573Srgrimes * The functions glob2 and glob3 are mutually recursive; there is one level 5441573Srgrimes * of recursion for each segment in the pattern that contains one or more 5451573Srgrimes * meta characters. 5461573Srgrimes */ 5471573Srgrimesstatic int 548159294Sdelphijglob2(Char *pathbuf, Char *pathend, Char *pathend_last, Char *pattern, 549159294Sdelphij glob_t *pglob, size_t *limit) 5501573Srgrimes{ 5511573Srgrimes struct stat sb; 5521573Srgrimes Char *p, *q; 5531573Srgrimes int anymeta; 5541573Srgrimes 5551573Srgrimes /* 5561573Srgrimes * Loop over pattern segments until end of pattern or until 5571573Srgrimes * segment with meta character found. 5581573Srgrimes */ 5591573Srgrimes for (anymeta = 0;;) { 5601573Srgrimes if (*pattern == EOS) { /* End of pattern? */ 5611573Srgrimes *pathend = EOS; 5621573Srgrimes if (g_lstat(pathbuf, &sb, pglob)) 5631573Srgrimes return(0); 5648870Srgrimes 5651573Srgrimes if (((pglob->gl_flags & GLOB_MARK) && 5661573Srgrimes pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) 5671573Srgrimes || (S_ISLNK(sb.st_mode) && 5681573Srgrimes (g_stat(pathbuf, &sb, pglob) == 0) && 5691573Srgrimes S_ISDIR(sb.st_mode)))) { 57074963Speter if (pathend + 1 > pathend_last) 571100217Smikeh return (GLOB_ABORTED); 5721573Srgrimes *pathend++ = SEP; 5731573Srgrimes *pathend = EOS; 5741573Srgrimes } 5751573Srgrimes ++pglob->gl_matchc; 57674469Sjlemon return(globextend(pathbuf, pglob, limit)); 5771573Srgrimes } 5781573Srgrimes 5791573Srgrimes /* Find end of next segment, copy tentatively to pathend. */ 5801573Srgrimes q = pathend; 5811573Srgrimes p = pattern; 5821573Srgrimes while (*p != EOS && *p != SEP) { 5831573Srgrimes if (ismeta(*p)) 5841573Srgrimes anymeta = 1; 58574963Speter if (q + 1 > pathend_last) 586100217Smikeh return (GLOB_ABORTED); 5871573Srgrimes *q++ = *p++; 5881573Srgrimes } 5891573Srgrimes 5901573Srgrimes if (!anymeta) { /* No expansion, do next segment. */ 5911573Srgrimes pathend = q; 5921573Srgrimes pattern = p; 59374963Speter while (*pattern == SEP) { 59474963Speter if (pathend + 1 > pathend_last) 595100217Smikeh return (GLOB_ABORTED); 5961573Srgrimes *pathend++ = *pattern++; 59774963Speter } 5981573Srgrimes } else /* Need expansion, recurse. */ 59974963Speter return(glob3(pathbuf, pathend, pathend_last, pattern, p, 60074963Speter pglob, limit)); 6011573Srgrimes } 6021573Srgrimes /* NOTREACHED */ 6031573Srgrimes} 6041573Srgrimes 6051573Srgrimesstatic int 606159294Sdelphijglob3(Char *pathbuf, Char *pathend, Char *pathend_last, 607159294Sdelphij Char *pattern, Char *restpattern, 608159294Sdelphij glob_t *pglob, size_t *limit) 6091573Srgrimes{ 61090045Sobrien struct dirent *dp; 6111573Srgrimes DIR *dirp; 6121573Srgrimes int err; 6131573Srgrimes char buf[MAXPATHLEN]; 6141573Srgrimes 6151573Srgrimes /* 6161573Srgrimes * The readdirfunc declaration can't be prototyped, because it is 6171573Srgrimes * assigned, below, to two functions which are prototyped in glob.h 6181573Srgrimes * and dirent.h as taking pointers to differently typed opaque 6191573Srgrimes * structures. 6201573Srgrimes */ 6211573Srgrimes struct dirent *(*readdirfunc)(); 6221573Srgrimes 62374963Speter if (pathend > pathend_last) 624100217Smikeh return (GLOB_ABORTED); 6251573Srgrimes *pathend = EOS; 6261573Srgrimes errno = 0; 6278870Srgrimes 6281573Srgrimes if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { 6291573Srgrimes /* TODO: don't call for ENOENT or ENOTDIR? */ 6301573Srgrimes if (pglob->gl_errfunc) { 63174921Speter if (g_Ctoc(pathbuf, buf, sizeof(buf))) 632100217Smikeh return (GLOB_ABORTED); 6331573Srgrimes if (pglob->gl_errfunc(buf, errno) || 6341573Srgrimes pglob->gl_flags & GLOB_ERR) 635100217Smikeh return (GLOB_ABORTED); 6361573Srgrimes } 6371573Srgrimes return(0); 6381573Srgrimes } 6391573Srgrimes 6401573Srgrimes err = 0; 6411573Srgrimes 6421573Srgrimes /* Search directory for matching names. */ 6431573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 6441573Srgrimes readdirfunc = pglob->gl_readdir; 6451573Srgrimes else 6461573Srgrimes readdirfunc = readdir; 6471573Srgrimes while ((dp = (*readdirfunc)(dirp))) { 648159294Sdelphij char *sc; 64990045Sobrien Char *dc; 650132817Stjr wchar_t wc; 651132817Stjr size_t clen; 652132817Stjr mbstate_t mbs; 6531573Srgrimes 6541573Srgrimes /* Initial DOT must be matched literally. */ 6551573Srgrimes if (dp->d_name[0] == DOT && *pattern != DOT) 6561573Srgrimes continue; 657132817Stjr memset(&mbs, 0, sizeof(mbs)); 65874963Speter dc = pathend; 659159294Sdelphij sc = dp->d_name; 660132817Stjr while (dc < pathend_last) { 661132817Stjr clen = mbrtowc(&wc, sc, MB_LEN_MAX, &mbs); 662132817Stjr if (clen == (size_t)-1 || clen == (size_t)-2) { 663132817Stjr wc = *sc; 664132817Stjr clen = 1; 665132817Stjr memset(&mbs, 0, sizeof(mbs)); 666132817Stjr } 667132817Stjr if ((*dc++ = wc) == EOS) 668132817Stjr break; 669132817Stjr sc += clen; 670132817Stjr } 6711573Srgrimes if (!match(pathend, pattern, restpattern)) { 6721573Srgrimes *pathend = EOS; 6731573Srgrimes continue; 6741573Srgrimes } 67574963Speter err = glob2(pathbuf, --dc, pathend_last, restpattern, 67674963Speter pglob, limit); 6771573Srgrimes if (err) 6781573Srgrimes break; 6791573Srgrimes } 6801573Srgrimes 6811573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 6821573Srgrimes (*pglob->gl_closedir)(dirp); 6831573Srgrimes else 6841573Srgrimes closedir(dirp); 6851573Srgrimes return(err); 6861573Srgrimes} 6871573Srgrimes 6881573Srgrimes 6891573Srgrimes/* 6901573Srgrimes * Extend the gl_pathv member of a glob_t structure to accomodate a new item, 6911573Srgrimes * add the new item, and update gl_pathc. 6921573Srgrimes * 6931573Srgrimes * This assumes the BSD realloc, which only copies the block when its size 6941573Srgrimes * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic 6951573Srgrimes * behavior. 6961573Srgrimes * 6971573Srgrimes * Return 0 if new item added, error code if memory couldn't be allocated. 6981573Srgrimes * 6991573Srgrimes * Invariant of the glob_t structure: 7001573Srgrimes * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and 7011573Srgrimes * gl_pathv points to (gl_offs + gl_pathc + 1) items. 7021573Srgrimes */ 7031573Srgrimesstatic int 704159294Sdelphijglobextend(const Char *path, glob_t *pglob, size_t *limit) 7051573Srgrimes{ 70690045Sobrien char **pathv; 707158812Sache size_t i, newsize, len; 7081573Srgrimes char *copy; 7091573Srgrimes const Char *p; 7101573Srgrimes 71180525Smikeh if (*limit && pglob->gl_pathc > *limit) { 71280525Smikeh errno = 0; 71380525Smikeh return (GLOB_NOSPACE); 71480525Smikeh } 71574307Sjlemon 7161573Srgrimes newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); 7178870Srgrimes pathv = pglob->gl_pathv ? 7181573Srgrimes realloc((char *)pglob->gl_pathv, newsize) : 7191573Srgrimes malloc(newsize); 72074918Speter if (pathv == NULL) { 72174918Speter if (pglob->gl_pathv) { 72274918Speter free(pglob->gl_pathv); 72374918Speter pglob->gl_pathv = NULL; 72474918Speter } 7251573Srgrimes return(GLOB_NOSPACE); 72674918Speter } 7271573Srgrimes 7281573Srgrimes if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { 7291573Srgrimes /* first time around -- clear initial gl_offs items */ 7301573Srgrimes pathv += pglob->gl_offs; 731158812Sache for (i = pglob->gl_offs + 1; --i > 0; ) 7321573Srgrimes *--pathv = NULL; 7331573Srgrimes } 7341573Srgrimes pglob->gl_pathv = pathv; 7351573Srgrimes 7361573Srgrimes for (p = path; *p++;) 7371573Srgrimes continue; 738132817Stjr len = MB_CUR_MAX * (size_t)(p - path); /* XXX overallocation */ 73974921Speter if ((copy = malloc(len)) != NULL) { 74074921Speter if (g_Ctoc(path, copy, len)) { 74174918Speter free(copy); 74274918Speter return (GLOB_NOSPACE); 74374918Speter } 7441573Srgrimes pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; 7451573Srgrimes } 7461573Srgrimes pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; 7471573Srgrimes return(copy == NULL ? GLOB_NOSPACE : 0); 7481573Srgrimes} 7491573Srgrimes 7501573Srgrimes/* 7511573Srgrimes * pattern matching function for filenames. Each occurrence of the * 7521573Srgrimes * pattern causes a recursion level. 7531573Srgrimes */ 7541573Srgrimesstatic int 755159294Sdelphijmatch(Char *name, Char *pat, Char *patend) 7561573Srgrimes{ 7571573Srgrimes int ok, negate_range; 7581573Srgrimes Char c, k; 759227753Stheraven struct xlocale_collate *table = 760227753Stheraven (struct xlocale_collate*)__get_locale()->components[XLC_COLLATE]; 7611573Srgrimes 7621573Srgrimes while (pat < patend) { 7631573Srgrimes c = *pat++; 7641573Srgrimes switch (c & M_MASK) { 7651573Srgrimes case M_ALL: 7661573Srgrimes if (pat == patend) 7671573Srgrimes return(1); 7688870Srgrimes do 7691573Srgrimes if (match(name, pat, patend)) 7701573Srgrimes return(1); 7711573Srgrimes while (*name++ != EOS); 7721573Srgrimes return(0); 7731573Srgrimes case M_ONE: 7741573Srgrimes if (*name++ == EOS) 7751573Srgrimes return(0); 7761573Srgrimes break; 7771573Srgrimes case M_SET: 7781573Srgrimes ok = 0; 7791573Srgrimes if ((k = *name++) == EOS) 7801573Srgrimes return(0); 7811573Srgrimes if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS) 7821573Srgrimes ++pat; 7831573Srgrimes while (((c = *pat++) & M_MASK) != M_END) 7841573Srgrimes if ((*pat & M_MASK) == M_RNG) { 785227753Stheraven if (table->__collate_load_error ? 78624633Sache CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(pat[1]) : 787227753Stheraven __collate_range_cmp(table, CHAR(c), CHAR(k)) <= 0 788227753Stheraven && __collate_range_cmp(table, CHAR(k), CHAR(pat[1])) <= 0 78917528Sache ) 7901573Srgrimes ok = 1; 7911573Srgrimes pat += 2; 7921573Srgrimes } else if (c == k) 7931573Srgrimes ok = 1; 7941573Srgrimes if (ok == negate_range) 7951573Srgrimes return(0); 7961573Srgrimes break; 7971573Srgrimes default: 7981573Srgrimes if (*name++ != c) 7991573Srgrimes return(0); 8001573Srgrimes break; 8011573Srgrimes } 8021573Srgrimes } 8031573Srgrimes return(*name == EOS); 8041573Srgrimes} 8051573Srgrimes 8061573Srgrimes/* Free allocated data belonging to a glob_t structure. */ 8071573Srgrimesvoid 808159294Sdelphijglobfree(glob_t *pglob) 8091573Srgrimes{ 810158812Sache size_t i; 81190045Sobrien char **pp; 8121573Srgrimes 8131573Srgrimes if (pglob->gl_pathv != NULL) { 8141573Srgrimes pp = pglob->gl_pathv + pglob->gl_offs; 8151573Srgrimes for (i = pglob->gl_pathc; i--; ++pp) 8161573Srgrimes if (*pp) 8171573Srgrimes free(*pp); 8181573Srgrimes free(pglob->gl_pathv); 81974918Speter pglob->gl_pathv = NULL; 8201573Srgrimes } 8211573Srgrimes} 8221573Srgrimes 8231573Srgrimesstatic DIR * 824159294Sdelphijg_opendir(Char *str, glob_t *pglob) 8251573Srgrimes{ 8261573Srgrimes char buf[MAXPATHLEN]; 8271573Srgrimes 8281573Srgrimes if (!*str) 8291573Srgrimes strcpy(buf, "."); 83074918Speter else { 83174921Speter if (g_Ctoc(str, buf, sizeof(buf))) 83274918Speter return (NULL); 83374918Speter } 8341573Srgrimes 8351573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 8361573Srgrimes return((*pglob->gl_opendir)(buf)); 8371573Srgrimes 8381573Srgrimes return(opendir(buf)); 8391573Srgrimes} 8401573Srgrimes 8411573Srgrimesstatic int 842159294Sdelphijg_lstat(Char *fn, struct stat *sb, glob_t *pglob) 8431573Srgrimes{ 8441573Srgrimes char buf[MAXPATHLEN]; 8451573Srgrimes 84674921Speter if (g_Ctoc(fn, buf, sizeof(buf))) { 84774918Speter errno = ENAMETOOLONG; 84874918Speter return (-1); 84974918Speter } 8501573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 8511573Srgrimes return((*pglob->gl_lstat)(buf, sb)); 8521573Srgrimes return(lstat(buf, sb)); 8531573Srgrimes} 8541573Srgrimes 8551573Srgrimesstatic int 856159294Sdelphijg_stat(Char *fn, struct stat *sb, glob_t *pglob) 8571573Srgrimes{ 8581573Srgrimes char buf[MAXPATHLEN]; 8591573Srgrimes 86074921Speter if (g_Ctoc(fn, buf, sizeof(buf))) { 86174918Speter errno = ENAMETOOLONG; 86274918Speter return (-1); 86374918Speter } 8641573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 8651573Srgrimes return((*pglob->gl_stat)(buf, sb)); 8661573Srgrimes return(stat(buf, sb)); 8671573Srgrimes} 8681573Srgrimes 869180021Smtmstatic const Char * 870180021Smtmg_strchr(const Char *str, wchar_t ch) 8711573Srgrimes{ 872159294Sdelphij 8731573Srgrimes do { 8741573Srgrimes if (*str == ch) 8751573Srgrimes return (str); 8761573Srgrimes } while (*str++); 8771573Srgrimes return (NULL); 8781573Srgrimes} 8791573Srgrimes 88074918Speterstatic int 881159294Sdelphijg_Ctoc(const Char *str, char *buf, size_t len) 8821573Srgrimes{ 883132817Stjr mbstate_t mbs; 884132817Stjr size_t clen; 8851573Srgrimes 886132817Stjr memset(&mbs, 0, sizeof(mbs)); 887132817Stjr while (len >= MB_CUR_MAX) { 888132817Stjr clen = wcrtomb(buf, *str, &mbs); 889132817Stjr if (clen == (size_t)-1) 890132817Stjr return (1); 891132817Stjr if (*str == L'\0') 89274921Speter return (0); 893132817Stjr str++; 894132817Stjr buf += clen; 895132817Stjr len -= clen; 89674921Speter } 89774921Speter return (1); 8981573Srgrimes} 8991573Srgrimes 9001573Srgrimes#ifdef DEBUG 9018870Srgrimesstatic void 902159294Sdelphijqprintf(const char *str, Char *s) 9031573Srgrimes{ 90490045Sobrien Char *p; 9051573Srgrimes 9061573Srgrimes (void)printf("%s:\n", str); 9071573Srgrimes for (p = s; *p; p++) 9081573Srgrimes (void)printf("%c", CHAR(*p)); 9091573Srgrimes (void)printf("\n"); 9101573Srgrimes for (p = s; *p; p++) 9111573Srgrimes (void)printf("%c", *p & M_PROTECT ? '"' : ' '); 9121573Srgrimes (void)printf("\n"); 9131573Srgrimes for (p = s; *p; p++) 9141573Srgrimes (void)printf("%c", ismeta(*p) ? '_' : ' '); 9151573Srgrimes (void)printf("\n"); 9161573Srgrimes} 9171573Srgrimes#endif 918