glob.c revision 28836
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 * 81573Srgrimes * Redistribution and use in source and binary forms, with or without 91573Srgrimes * modification, are permitted provided that the following conditions 101573Srgrimes * are met: 111573Srgrimes * 1. Redistributions of source code must retain the above copyright 121573Srgrimes * notice, this list of conditions and the following disclaimer. 131573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141573Srgrimes * notice, this list of conditions and the following disclaimer in the 151573Srgrimes * documentation and/or other materials provided with the distribution. 161573Srgrimes * 3. All advertising materials mentioning features or use of this software 171573Srgrimes * must display the following acknowledgement: 181573Srgrimes * This product includes software developed by the University of 191573Srgrimes * California, Berkeley and its contributors. 201573Srgrimes * 4. Neither the name of the University nor the names of its contributors 211573Srgrimes * may be used to endorse or promote products derived from this software 221573Srgrimes * without specific prior written permission. 231573Srgrimes * 241573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341573Srgrimes * SUCH DAMAGE. 351573Srgrimes */ 361573Srgrimes 371573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 381573Srgrimesstatic char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; 391573Srgrimes#endif /* LIBC_SCCS and not lint */ 401573Srgrimes 411573Srgrimes/* 421573Srgrimes * glob(3) -- a superset of the one defined in POSIX 1003.2. 431573Srgrimes * 441573Srgrimes * The [!...] convention to negate a range is supported (SysV, Posix, ksh). 451573Srgrimes * 461573Srgrimes * Optional extra services, controlled by flags not defined by POSIX: 471573Srgrimes * 481573Srgrimes * GLOB_QUOTE: 491573Srgrimes * Escaping convention: \ inhibits any special meaning the following 501573Srgrimes * character might have (except \ at end of string is retained). 511573Srgrimes * GLOB_MAGCHAR: 521573Srgrimes * Set in gl_flags if pattern contained a globbing character. 531573Srgrimes * GLOB_NOMAGIC: 541573Srgrimes * Same as GLOB_NOCHECK, but it will only append pattern if it did 551573Srgrimes * not contain any magic characters. [Used in csh style globbing] 561573Srgrimes * GLOB_ALTDIRFUNC: 571573Srgrimes * Use alternately specified directory access functions. 581573Srgrimes * GLOB_TILDE: 591573Srgrimes * expand ~user/foo to the /home/dir/of/user/foo 601573Srgrimes * GLOB_BRACE: 618870Srgrimes * expand {1,2}{a,b} to 1a 1b 2a 2b 621573Srgrimes * gl_matchc: 631573Srgrimes * Number of matches in the current invocation of glob. 641573Srgrimes */ 651573Srgrimes 661573Srgrimes#include <sys/param.h> 671573Srgrimes#include <sys/stat.h> 681573Srgrimes 691573Srgrimes#include <ctype.h> 701573Srgrimes#include <dirent.h> 711573Srgrimes#include <errno.h> 721573Srgrimes#include <glob.h> 731573Srgrimes#include <pwd.h> 741573Srgrimes#include <stdio.h> 751573Srgrimes#include <stdlib.h> 761573Srgrimes#include <string.h> 771573Srgrimes#include <unistd.h> 781573Srgrimes 7919276Sache#include "collate.h" 8019276Sache 811573Srgrimes#define DOLLAR '$' 821573Srgrimes#define DOT '.' 831573Srgrimes#define EOS '\0' 841573Srgrimes#define LBRACKET '[' 851573Srgrimes#define NOT '!' 861573Srgrimes#define QUESTION '?' 871573Srgrimes#define QUOTE '\\' 881573Srgrimes#define RANGE '-' 891573Srgrimes#define RBRACKET ']' 901573Srgrimes#define SEP '/' 911573Srgrimes#define STAR '*' 921573Srgrimes#define TILDE '~' 931573Srgrimes#define UNDERSCORE '_' 941573Srgrimes#define LBRACE '{' 951573Srgrimes#define RBRACE '}' 961573Srgrimes#define SLASH '/' 971573Srgrimes#define COMMA ',' 981573Srgrimes 991573Srgrimes#ifndef DEBUG 1001573Srgrimes 1011573Srgrimes#define M_QUOTE 0x8000 1021573Srgrimes#define M_PROTECT 0x4000 1031573Srgrimes#define M_MASK 0xffff 1041573Srgrimes#define M_ASCII 0x00ff 1051573Srgrimes 1061573Srgrimestypedef u_short Char; 1071573Srgrimes 1081573Srgrimes#else 1091573Srgrimes 1101573Srgrimes#define M_QUOTE 0x80 1111573Srgrimes#define M_PROTECT 0x40 1121573Srgrimes#define M_MASK 0xff 1131573Srgrimes#define M_ASCII 0x7f 1141573Srgrimes 1151573Srgrimestypedef char Char; 1161573Srgrimes 1171573Srgrimes#endif 1181573Srgrimes 1191573Srgrimes 1201573Srgrimes#define CHAR(c) ((Char)((c)&M_ASCII)) 1211573Srgrimes#define META(c) ((Char)((c)|M_QUOTE)) 1221573Srgrimes#define M_ALL META('*') 1231573Srgrimes#define M_END META(']') 1241573Srgrimes#define M_NOT META('!') 1251573Srgrimes#define M_ONE META('?') 1261573Srgrimes#define M_RNG META('-') 1271573Srgrimes#define M_SET META('[') 1281573Srgrimes#define ismeta(c) (((c)&M_QUOTE) != 0) 1291573Srgrimes 1301573Srgrimes 1311573Srgrimesstatic int compare __P((const void *, const void *)); 1321573Srgrimesstatic void g_Ctoc __P((const Char *, char *)); 1331573Srgrimesstatic int g_lstat __P((Char *, struct stat *, glob_t *)); 1341573Srgrimesstatic DIR *g_opendir __P((Char *, glob_t *)); 1351573Srgrimesstatic Char *g_strchr __P((Char *, int)); 1361573Srgrimes#ifdef notdef 1371573Srgrimesstatic Char *g_strcat __P((Char *, const Char *)); 1381573Srgrimes#endif 1391573Srgrimesstatic int g_stat __P((Char *, struct stat *, glob_t *)); 1401573Srgrimesstatic int glob0 __P((const Char *, glob_t *)); 1411573Srgrimesstatic int glob1 __P((Char *, glob_t *)); 1421573Srgrimesstatic int glob2 __P((Char *, Char *, Char *, glob_t *)); 1431573Srgrimesstatic int glob3 __P((Char *, Char *, Char *, Char *, glob_t *)); 1441573Srgrimesstatic int globextend __P((const Char *, glob_t *)); 14524158Simpstatic const Char * globtilde __P((const Char *, Char *, size_t, glob_t *)); 1461573Srgrimesstatic int globexp1 __P((const Char *, glob_t *)); 1471573Srgrimesstatic int globexp2 __P((const Char *, const Char *, glob_t *, int *)); 1481573Srgrimesstatic int match __P((Char *, Char *, Char *)); 1491573Srgrimes#ifdef DEBUG 1501573Srgrimesstatic void qprintf __P((const char *, Char *)); 1511573Srgrimes#endif 1521573Srgrimes 1531573Srgrimesint 1541573Srgrimesglob(pattern, flags, errfunc, pglob) 1551573Srgrimes const char *pattern; 1561573Srgrimes int flags, (*errfunc) __P((const char *, int)); 1571573Srgrimes glob_t *pglob; 1581573Srgrimes{ 1591573Srgrimes const u_char *patnext; 1601573Srgrimes int c; 1611573Srgrimes Char *bufnext, *bufend, patbuf[MAXPATHLEN+1]; 1621573Srgrimes 1631573Srgrimes patnext = (u_char *) pattern; 1641573Srgrimes if (!(flags & GLOB_APPEND)) { 1651573Srgrimes pglob->gl_pathc = 0; 1661573Srgrimes pglob->gl_pathv = NULL; 1671573Srgrimes if (!(flags & GLOB_DOOFFS)) 1681573Srgrimes pglob->gl_offs = 0; 1691573Srgrimes } 1701573Srgrimes pglob->gl_flags = flags & ~GLOB_MAGCHAR; 1711573Srgrimes pglob->gl_errfunc = errfunc; 1721573Srgrimes pglob->gl_matchc = 0; 1731573Srgrimes 1741573Srgrimes bufnext = patbuf; 1751573Srgrimes bufend = bufnext + MAXPATHLEN; 1761573Srgrimes if (flags & GLOB_QUOTE) { 1771573Srgrimes /* Protect the quoted characters. */ 1788870Srgrimes while (bufnext < bufend && (c = *patnext++) != EOS) 1791573Srgrimes if (c == QUOTE) { 1801573Srgrimes if ((c = *patnext++) == EOS) { 1811573Srgrimes c = QUOTE; 1821573Srgrimes --patnext; 1831573Srgrimes } 1841573Srgrimes *bufnext++ = c | M_PROTECT; 1851573Srgrimes } 1861573Srgrimes else 1871573Srgrimes *bufnext++ = c; 1881573Srgrimes } 1898870Srgrimes else 1908870Srgrimes while (bufnext < bufend && (c = *patnext++) != EOS) 1911573Srgrimes *bufnext++ = c; 1921573Srgrimes *bufnext = EOS; 1931573Srgrimes 1941573Srgrimes if (flags & GLOB_BRACE) 1951573Srgrimes return globexp1(patbuf, pglob); 1961573Srgrimes else 1971573Srgrimes return glob0(patbuf, pglob); 1981573Srgrimes} 1991573Srgrimes 2001573Srgrimes/* 2011573Srgrimes * Expand recursively a glob {} pattern. When there is no more expansion 2021573Srgrimes * invoke the standard globbing routine to glob the rest of the magic 2031573Srgrimes * characters 2041573Srgrimes */ 2051573Srgrimesstatic int globexp1(pattern, pglob) 2061573Srgrimes const Char *pattern; 2071573Srgrimes glob_t *pglob; 2081573Srgrimes{ 2091573Srgrimes const Char* ptr = pattern; 2101573Srgrimes int rv; 2111573Srgrimes 2121573Srgrimes /* Protect a single {}, for find(1), like csh */ 2131573Srgrimes if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) 2141573Srgrimes return glob0(pattern, pglob); 2151573Srgrimes 2161573Srgrimes while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL) 2171573Srgrimes if (!globexp2(ptr, pattern, pglob, &rv)) 2181573Srgrimes return rv; 2191573Srgrimes 2201573Srgrimes return glob0(pattern, pglob); 2211573Srgrimes} 2221573Srgrimes 2231573Srgrimes 2241573Srgrimes/* 2251573Srgrimes * Recursive brace globbing helper. Tries to expand a single brace. 2261573Srgrimes * If it succeeds then it invokes globexp1 with the new pattern. 2271573Srgrimes * If it fails then it tries to glob the rest of the pattern and returns. 2281573Srgrimes */ 2291573Srgrimesstatic int globexp2(ptr, pattern, pglob, rv) 2301573Srgrimes const Char *ptr, *pattern; 2311573Srgrimes glob_t *pglob; 2321573Srgrimes int *rv; 2331573Srgrimes{ 2341573Srgrimes int i; 2351573Srgrimes Char *lm, *ls; 2361573Srgrimes const Char *pe, *pm, *pl; 2371573Srgrimes Char patbuf[MAXPATHLEN + 1]; 2381573Srgrimes 2391573Srgrimes /* copy part up to the brace */ 2401573Srgrimes for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) 2411573Srgrimes continue; 2421573Srgrimes ls = lm; 2431573Srgrimes 2441573Srgrimes /* Find the balanced brace */ 2451573Srgrimes for (i = 0, pe = ++ptr; *pe; pe++) 2461573Srgrimes if (*pe == LBRACKET) { 2471573Srgrimes /* Ignore everything between [] */ 2481573Srgrimes for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++) 2491573Srgrimes continue; 2501573Srgrimes if (*pe == EOS) { 2518870Srgrimes /* 2521573Srgrimes * We could not find a matching RBRACKET. 2531573Srgrimes * Ignore and just look for RBRACE 2541573Srgrimes */ 2551573Srgrimes pe = pm; 2561573Srgrimes } 2571573Srgrimes } 2581573Srgrimes else if (*pe == LBRACE) 2591573Srgrimes i++; 2601573Srgrimes else if (*pe == RBRACE) { 2611573Srgrimes if (i == 0) 2621573Srgrimes break; 2631573Srgrimes i--; 2641573Srgrimes } 2651573Srgrimes 2661573Srgrimes /* Non matching braces; just glob the pattern */ 2671573Srgrimes if (i != 0 || *pe == EOS) { 2681573Srgrimes *rv = glob0(patbuf, pglob); 2691573Srgrimes return 0; 2701573Srgrimes } 2711573Srgrimes 2721573Srgrimes for (i = 0, pl = pm = ptr; pm <= pe; pm++) 2731573Srgrimes switch (*pm) { 2741573Srgrimes case LBRACKET: 2751573Srgrimes /* Ignore everything between [] */ 2761573Srgrimes for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++) 2771573Srgrimes continue; 2781573Srgrimes if (*pm == EOS) { 2798870Srgrimes /* 2801573Srgrimes * We could not find a matching RBRACKET. 2811573Srgrimes * Ignore and just look for RBRACE 2821573Srgrimes */ 2831573Srgrimes pm = pl; 2841573Srgrimes } 2851573Srgrimes break; 2861573Srgrimes 2871573Srgrimes case LBRACE: 2881573Srgrimes i++; 2891573Srgrimes break; 2901573Srgrimes 2911573Srgrimes case RBRACE: 2921573Srgrimes if (i) { 2931573Srgrimes i--; 2941573Srgrimes break; 2951573Srgrimes } 2961573Srgrimes /* FALLTHROUGH */ 2971573Srgrimes case COMMA: 2981573Srgrimes if (i && *pm == COMMA) 2991573Srgrimes break; 3001573Srgrimes else { 3011573Srgrimes /* Append the current string */ 3021573Srgrimes for (lm = ls; (pl < pm); *lm++ = *pl++) 3031573Srgrimes continue; 3048870Srgrimes /* 3051573Srgrimes * Append the rest of the pattern after the 3061573Srgrimes * closing brace 3071573Srgrimes */ 3081573Srgrimes for (pl = pe + 1; (*lm++ = *pl++) != EOS;) 3091573Srgrimes continue; 3101573Srgrimes 3111573Srgrimes /* Expand the current pattern */ 3121573Srgrimes#ifdef DEBUG 3131573Srgrimes qprintf("globexp2:", patbuf); 3141573Srgrimes#endif 3151573Srgrimes *rv = globexp1(patbuf, pglob); 3161573Srgrimes 3171573Srgrimes /* move after the comma, to the next string */ 3181573Srgrimes pl = pm + 1; 3191573Srgrimes } 3201573Srgrimes break; 3211573Srgrimes 3221573Srgrimes default: 3231573Srgrimes break; 3241573Srgrimes } 3251573Srgrimes *rv = 0; 3261573Srgrimes return 0; 3271573Srgrimes} 3281573Srgrimes 3291573Srgrimes 3301573Srgrimes 3311573Srgrimes/* 3321573Srgrimes * expand tilde from the passwd file. 3331573Srgrimes */ 3341573Srgrimesstatic const Char * 33524158Simpglobtilde(pattern, patbuf, patbuf_len, pglob) 3361573Srgrimes const Char *pattern; 3371573Srgrimes Char *patbuf; 33824158Simp size_t patbuf_len; 3391573Srgrimes glob_t *pglob; 3401573Srgrimes{ 3411573Srgrimes struct passwd *pwd; 3421573Srgrimes char *h; 3431573Srgrimes const Char *p; 34424158Simp Char *b, *eb; 3451573Srgrimes 3461573Srgrimes if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE)) 3471573Srgrimes return pattern; 3481573Srgrimes 34924158Simp /* 35024158Simp * Copy up to the end of the string or / 35124158Simp */ 35224158Simp eb = &patbuf[patbuf_len - 1]; 35324158Simp for (p = pattern + 1, h = (char *) patbuf; 35424158Simp h < (char *)eb && *p && *p != SLASH; *h++ = *p++) 3551573Srgrimes continue; 3561573Srgrimes 3571573Srgrimes *h = EOS; 3581573Srgrimes 3591573Srgrimes if (((char *) patbuf)[0] == EOS) { 3608870Srgrimes /* 36128820Simp * handle a plain ~ or ~/ by expanding $HOME first (iff 36228820Simp * we're not running setuid or setgid) and then trying 36328820Simp * the password file 3641573Srgrimes */ 36528820Simp if (issetugid() != 0 || (h = getenv("HOME")) == NULL) { 36628836Sache if (((h = getlogin()) != NULL && 36728836Sache (pwd = getpwnam(h)) != NULL) || 36828836Sache (pwd = getpwuid(getuid())) != NULL) 36928836Sache h = pwd->pw_dir; 37028836Sache else 3711573Srgrimes return pattern; 3721573Srgrimes } 3731573Srgrimes } 3741573Srgrimes else { 3751573Srgrimes /* 3761573Srgrimes * Expand a ~user 3771573Srgrimes */ 3781573Srgrimes if ((pwd = getpwnam((char*) patbuf)) == NULL) 3791573Srgrimes return pattern; 3801573Srgrimes else 3811573Srgrimes h = pwd->pw_dir; 3821573Srgrimes } 3831573Srgrimes 3841573Srgrimes /* Copy the home directory */ 38524158Simp for (b = patbuf; b < eb && *h; *b++ = *h++) 3861573Srgrimes continue; 3878870Srgrimes 3881573Srgrimes /* Append the rest of the pattern */ 38924158Simp while (b < eb && (*b++ = *p++) != EOS) 3901573Srgrimes continue; 39124158Simp *b = EOS; 3921573Srgrimes 3931573Srgrimes return patbuf; 3941573Srgrimes} 3951573Srgrimes 3968870Srgrimes 3971573Srgrimes/* 3981573Srgrimes * The main glob() routine: compiles the pattern (optionally processing 3991573Srgrimes * quotes), calls glob1() to do the real pattern matching, and finally 4001573Srgrimes * sorts the list (unless unsorted operation is requested). Returns 0 4011573Srgrimes * if things went well, nonzero if errors occurred. It is not an error 4021573Srgrimes * to find no matches. 4031573Srgrimes */ 4041573Srgrimesstatic int 4051573Srgrimesglob0(pattern, pglob) 4061573Srgrimes const Char *pattern; 4071573Srgrimes glob_t *pglob; 4081573Srgrimes{ 4091573Srgrimes const Char *qpatnext; 4101573Srgrimes int c, err, oldpathc; 4111573Srgrimes Char *bufnext, patbuf[MAXPATHLEN+1]; 4121573Srgrimes 41324158Simp qpatnext = globtilde(pattern, patbuf, sizeof(patbuf) / sizeof(Char), 41424158Simp pglob); 4151573Srgrimes oldpathc = pglob->gl_pathc; 4161573Srgrimes bufnext = patbuf; 4171573Srgrimes 4181573Srgrimes /* We don't need to check for buffer overflow any more. */ 4191573Srgrimes while ((c = *qpatnext++) != EOS) { 4201573Srgrimes switch (c) { 4211573Srgrimes case LBRACKET: 4221573Srgrimes c = *qpatnext; 4231573Srgrimes if (c == NOT) 4241573Srgrimes ++qpatnext; 4251573Srgrimes if (*qpatnext == EOS || 4261573Srgrimes g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) { 4271573Srgrimes *bufnext++ = LBRACKET; 4281573Srgrimes if (c == NOT) 4291573Srgrimes --qpatnext; 4301573Srgrimes break; 4311573Srgrimes } 4321573Srgrimes *bufnext++ = M_SET; 4331573Srgrimes if (c == NOT) 4341573Srgrimes *bufnext++ = M_NOT; 4351573Srgrimes c = *qpatnext++; 4361573Srgrimes do { 4371573Srgrimes *bufnext++ = CHAR(c); 4381573Srgrimes if (*qpatnext == RANGE && 4391573Srgrimes (c = qpatnext[1]) != RBRACKET) { 4401573Srgrimes *bufnext++ = M_RNG; 4411573Srgrimes *bufnext++ = CHAR(c); 4421573Srgrimes qpatnext += 2; 4431573Srgrimes } 4441573Srgrimes } while ((c = *qpatnext++) != RBRACKET); 4451573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4461573Srgrimes *bufnext++ = M_END; 4471573Srgrimes break; 4481573Srgrimes case QUESTION: 4491573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4501573Srgrimes *bufnext++ = M_ONE; 4511573Srgrimes break; 4521573Srgrimes case STAR: 4531573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4548870Srgrimes /* collapse adjacent stars to one, 4551573Srgrimes * to avoid exponential behavior 4561573Srgrimes */ 4571573Srgrimes if (bufnext == patbuf || bufnext[-1] != M_ALL) 4581573Srgrimes *bufnext++ = M_ALL; 4591573Srgrimes break; 4601573Srgrimes default: 4611573Srgrimes *bufnext++ = CHAR(c); 4621573Srgrimes break; 4631573Srgrimes } 4641573Srgrimes } 4651573Srgrimes *bufnext = EOS; 4661573Srgrimes#ifdef DEBUG 4671573Srgrimes qprintf("glob0:", patbuf); 4681573Srgrimes#endif 4691573Srgrimes 4701573Srgrimes if ((err = glob1(patbuf, pglob)) != 0) 4711573Srgrimes return(err); 4721573Srgrimes 4731573Srgrimes /* 4748870Srgrimes * If there was no match we are going to append the pattern 4751573Srgrimes * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified 4761573Srgrimes * and the pattern did not contain any magic characters 4771573Srgrimes * GLOB_NOMAGIC is there just for compatibility with csh. 4781573Srgrimes */ 4798870Srgrimes if (pglob->gl_pathc == oldpathc && 4808870Srgrimes ((pglob->gl_flags & GLOB_NOCHECK) || 4811573Srgrimes ((pglob->gl_flags & GLOB_NOMAGIC) && 4821573Srgrimes !(pglob->gl_flags & GLOB_MAGCHAR)))) 4831573Srgrimes return(globextend(pattern, pglob)); 4848870Srgrimes else if (!(pglob->gl_flags & GLOB_NOSORT)) 4851573Srgrimes qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, 4861573Srgrimes pglob->gl_pathc - oldpathc, sizeof(char *), compare); 4871573Srgrimes return(0); 4881573Srgrimes} 4891573Srgrimes 4901573Srgrimesstatic int 4911573Srgrimescompare(p, q) 4921573Srgrimes const void *p, *q; 4931573Srgrimes{ 4941573Srgrimes return(strcmp(*(char **)p, *(char **)q)); 4951573Srgrimes} 4961573Srgrimes 4971573Srgrimesstatic int 4981573Srgrimesglob1(pattern, pglob) 4991573Srgrimes Char *pattern; 5001573Srgrimes glob_t *pglob; 5011573Srgrimes{ 5021573Srgrimes Char pathbuf[MAXPATHLEN+1]; 5031573Srgrimes 5041573Srgrimes /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ 5051573Srgrimes if (*pattern == EOS) 5061573Srgrimes return(0); 5071573Srgrimes return(glob2(pathbuf, pathbuf, pattern, pglob)); 5081573Srgrimes} 5091573Srgrimes 5101573Srgrimes/* 5111573Srgrimes * The functions glob2 and glob3 are mutually recursive; there is one level 5121573Srgrimes * of recursion for each segment in the pattern that contains one or more 5131573Srgrimes * meta characters. 5141573Srgrimes */ 5151573Srgrimesstatic int 5161573Srgrimesglob2(pathbuf, pathend, pattern, pglob) 5171573Srgrimes Char *pathbuf, *pathend, *pattern; 5181573Srgrimes glob_t *pglob; 5191573Srgrimes{ 5201573Srgrimes struct stat sb; 5211573Srgrimes Char *p, *q; 5221573Srgrimes int anymeta; 5231573Srgrimes 5241573Srgrimes /* 5251573Srgrimes * Loop over pattern segments until end of pattern or until 5261573Srgrimes * segment with meta character found. 5271573Srgrimes */ 5281573Srgrimes for (anymeta = 0;;) { 5291573Srgrimes if (*pattern == EOS) { /* End of pattern? */ 5301573Srgrimes *pathend = EOS; 5311573Srgrimes if (g_lstat(pathbuf, &sb, pglob)) 5321573Srgrimes return(0); 5338870Srgrimes 5341573Srgrimes if (((pglob->gl_flags & GLOB_MARK) && 5351573Srgrimes pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) 5361573Srgrimes || (S_ISLNK(sb.st_mode) && 5371573Srgrimes (g_stat(pathbuf, &sb, pglob) == 0) && 5381573Srgrimes S_ISDIR(sb.st_mode)))) { 5391573Srgrimes *pathend++ = SEP; 5401573Srgrimes *pathend = EOS; 5411573Srgrimes } 5421573Srgrimes ++pglob->gl_matchc; 5431573Srgrimes return(globextend(pathbuf, pglob)); 5441573Srgrimes } 5451573Srgrimes 5461573Srgrimes /* Find end of next segment, copy tentatively to pathend. */ 5471573Srgrimes q = pathend; 5481573Srgrimes p = pattern; 5491573Srgrimes while (*p != EOS && *p != SEP) { 5501573Srgrimes if (ismeta(*p)) 5511573Srgrimes anymeta = 1; 5521573Srgrimes *q++ = *p++; 5531573Srgrimes } 5541573Srgrimes 5551573Srgrimes if (!anymeta) { /* No expansion, do next segment. */ 5561573Srgrimes pathend = q; 5571573Srgrimes pattern = p; 5581573Srgrimes while (*pattern == SEP) 5591573Srgrimes *pathend++ = *pattern++; 5601573Srgrimes } else /* Need expansion, recurse. */ 5611573Srgrimes return(glob3(pathbuf, pathend, pattern, p, pglob)); 5621573Srgrimes } 5631573Srgrimes /* NOTREACHED */ 5641573Srgrimes} 5651573Srgrimes 5661573Srgrimesstatic int 5671573Srgrimesglob3(pathbuf, pathend, pattern, restpattern, pglob) 5681573Srgrimes Char *pathbuf, *pathend, *pattern, *restpattern; 5691573Srgrimes glob_t *pglob; 5701573Srgrimes{ 5711573Srgrimes register struct dirent *dp; 5721573Srgrimes DIR *dirp; 5731573Srgrimes int err; 5741573Srgrimes char buf[MAXPATHLEN]; 5751573Srgrimes 5761573Srgrimes /* 5771573Srgrimes * The readdirfunc declaration can't be prototyped, because it is 5781573Srgrimes * assigned, below, to two functions which are prototyped in glob.h 5791573Srgrimes * and dirent.h as taking pointers to differently typed opaque 5801573Srgrimes * structures. 5811573Srgrimes */ 5821573Srgrimes struct dirent *(*readdirfunc)(); 5831573Srgrimes 5841573Srgrimes *pathend = EOS; 5851573Srgrimes errno = 0; 5868870Srgrimes 5871573Srgrimes if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { 5881573Srgrimes /* TODO: don't call for ENOENT or ENOTDIR? */ 5891573Srgrimes if (pglob->gl_errfunc) { 5901573Srgrimes g_Ctoc(pathbuf, buf); 5911573Srgrimes if (pglob->gl_errfunc(buf, errno) || 5921573Srgrimes pglob->gl_flags & GLOB_ERR) 5931573Srgrimes return (GLOB_ABEND); 5941573Srgrimes } 5951573Srgrimes return(0); 5961573Srgrimes } 5971573Srgrimes 5981573Srgrimes err = 0; 5991573Srgrimes 6001573Srgrimes /* Search directory for matching names. */ 6011573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 6021573Srgrimes readdirfunc = pglob->gl_readdir; 6031573Srgrimes else 6041573Srgrimes readdirfunc = readdir; 6051573Srgrimes while ((dp = (*readdirfunc)(dirp))) { 6061573Srgrimes register u_char *sc; 6071573Srgrimes register Char *dc; 6081573Srgrimes 6091573Srgrimes /* Initial DOT must be matched literally. */ 6101573Srgrimes if (dp->d_name[0] == DOT && *pattern != DOT) 6111573Srgrimes continue; 6128870Srgrimes for (sc = (u_char *) dp->d_name, dc = pathend; 6131573Srgrimes (*dc++ = *sc++) != EOS;) 6141573Srgrimes continue; 6151573Srgrimes if (!match(pathend, pattern, restpattern)) { 6161573Srgrimes *pathend = EOS; 6171573Srgrimes continue; 6181573Srgrimes } 6191573Srgrimes err = glob2(pathbuf, --dc, restpattern, pglob); 6201573Srgrimes if (err) 6211573Srgrimes break; 6221573Srgrimes } 6231573Srgrimes 6241573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 6251573Srgrimes (*pglob->gl_closedir)(dirp); 6261573Srgrimes else 6271573Srgrimes closedir(dirp); 6281573Srgrimes return(err); 6291573Srgrimes} 6301573Srgrimes 6311573Srgrimes 6321573Srgrimes/* 6331573Srgrimes * Extend the gl_pathv member of a glob_t structure to accomodate a new item, 6341573Srgrimes * add the new item, and update gl_pathc. 6351573Srgrimes * 6361573Srgrimes * This assumes the BSD realloc, which only copies the block when its size 6371573Srgrimes * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic 6381573Srgrimes * behavior. 6391573Srgrimes * 6401573Srgrimes * Return 0 if new item added, error code if memory couldn't be allocated. 6411573Srgrimes * 6421573Srgrimes * Invariant of the glob_t structure: 6431573Srgrimes * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and 6441573Srgrimes * gl_pathv points to (gl_offs + gl_pathc + 1) items. 6451573Srgrimes */ 6461573Srgrimesstatic int 6471573Srgrimesglobextend(path, pglob) 6481573Srgrimes const Char *path; 6491573Srgrimes glob_t *pglob; 6501573Srgrimes{ 6511573Srgrimes register char **pathv; 6521573Srgrimes register int i; 6531573Srgrimes u_int newsize; 6541573Srgrimes char *copy; 6551573Srgrimes const Char *p; 6561573Srgrimes 6571573Srgrimes newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); 6588870Srgrimes pathv = pglob->gl_pathv ? 6591573Srgrimes realloc((char *)pglob->gl_pathv, newsize) : 6601573Srgrimes malloc(newsize); 6611573Srgrimes if (pathv == NULL) 6621573Srgrimes return(GLOB_NOSPACE); 6631573Srgrimes 6641573Srgrimes if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { 6651573Srgrimes /* first time around -- clear initial gl_offs items */ 6661573Srgrimes pathv += pglob->gl_offs; 6671573Srgrimes for (i = pglob->gl_offs; --i >= 0; ) 6681573Srgrimes *--pathv = NULL; 6691573Srgrimes } 6701573Srgrimes pglob->gl_pathv = pathv; 6711573Srgrimes 6721573Srgrimes for (p = path; *p++;) 6731573Srgrimes continue; 6741573Srgrimes if ((copy = malloc(p - path)) != NULL) { 6751573Srgrimes g_Ctoc(path, copy); 6761573Srgrimes pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; 6771573Srgrimes } 6781573Srgrimes pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; 6791573Srgrimes return(copy == NULL ? GLOB_NOSPACE : 0); 6801573Srgrimes} 6811573Srgrimes 6821573Srgrimes/* 6831573Srgrimes * pattern matching function for filenames. Each occurrence of the * 6841573Srgrimes * pattern causes a recursion level. 6851573Srgrimes */ 6861573Srgrimesstatic int 6871573Srgrimesmatch(name, pat, patend) 6881573Srgrimes register Char *name, *pat, *patend; 6891573Srgrimes{ 6901573Srgrimes int ok, negate_range; 6911573Srgrimes Char c, k; 6921573Srgrimes 6931573Srgrimes while (pat < patend) { 6941573Srgrimes c = *pat++; 6951573Srgrimes switch (c & M_MASK) { 6961573Srgrimes case M_ALL: 6971573Srgrimes if (pat == patend) 6981573Srgrimes return(1); 6998870Srgrimes do 7001573Srgrimes if (match(name, pat, patend)) 7011573Srgrimes return(1); 7021573Srgrimes while (*name++ != EOS); 7031573Srgrimes return(0); 7041573Srgrimes case M_ONE: 7051573Srgrimes if (*name++ == EOS) 7061573Srgrimes return(0); 7071573Srgrimes break; 7081573Srgrimes case M_SET: 7091573Srgrimes ok = 0; 7101573Srgrimes if ((k = *name++) == EOS) 7111573Srgrimes return(0); 7121573Srgrimes if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS) 7131573Srgrimes ++pat; 7141573Srgrimes while (((c = *pat++) & M_MASK) != M_END) 7151573Srgrimes if ((*pat & M_MASK) == M_RNG) { 71624633Sache if (__collate_load_error ? 71724633Sache CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(pat[1]) : 71824633Sache __collate_range_cmp(CHAR(c), CHAR(k)) <= 0 71919276Sache && __collate_range_cmp(CHAR(k), CHAR(pat[1])) <= 0 72017528Sache ) 7211573Srgrimes ok = 1; 7221573Srgrimes pat += 2; 7231573Srgrimes } else if (c == k) 7241573Srgrimes ok = 1; 7251573Srgrimes if (ok == negate_range) 7261573Srgrimes return(0); 7271573Srgrimes break; 7281573Srgrimes default: 7291573Srgrimes if (*name++ != c) 7301573Srgrimes return(0); 7311573Srgrimes break; 7321573Srgrimes } 7331573Srgrimes } 7341573Srgrimes return(*name == EOS); 7351573Srgrimes} 7361573Srgrimes 7371573Srgrimes/* Free allocated data belonging to a glob_t structure. */ 7381573Srgrimesvoid 7391573Srgrimesglobfree(pglob) 7401573Srgrimes glob_t *pglob; 7411573Srgrimes{ 7421573Srgrimes register int i; 7431573Srgrimes register char **pp; 7441573Srgrimes 7451573Srgrimes if (pglob->gl_pathv != NULL) { 7461573Srgrimes pp = pglob->gl_pathv + pglob->gl_offs; 7471573Srgrimes for (i = pglob->gl_pathc; i--; ++pp) 7481573Srgrimes if (*pp) 7491573Srgrimes free(*pp); 7501573Srgrimes free(pglob->gl_pathv); 7511573Srgrimes } 7521573Srgrimes} 7531573Srgrimes 7541573Srgrimesstatic DIR * 7551573Srgrimesg_opendir(str, pglob) 7561573Srgrimes register Char *str; 7571573Srgrimes glob_t *pglob; 7581573Srgrimes{ 7591573Srgrimes char buf[MAXPATHLEN]; 7601573Srgrimes 7611573Srgrimes if (!*str) 7621573Srgrimes strcpy(buf, "."); 7631573Srgrimes else 7641573Srgrimes g_Ctoc(str, buf); 7651573Srgrimes 7661573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 7671573Srgrimes return((*pglob->gl_opendir)(buf)); 7681573Srgrimes 7691573Srgrimes return(opendir(buf)); 7701573Srgrimes} 7711573Srgrimes 7721573Srgrimesstatic int 7731573Srgrimesg_lstat(fn, sb, pglob) 7741573Srgrimes register Char *fn; 7751573Srgrimes struct stat *sb; 7761573Srgrimes glob_t *pglob; 7771573Srgrimes{ 7781573Srgrimes char buf[MAXPATHLEN]; 7791573Srgrimes 7801573Srgrimes g_Ctoc(fn, buf); 7811573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 7821573Srgrimes return((*pglob->gl_lstat)(buf, sb)); 7831573Srgrimes return(lstat(buf, sb)); 7841573Srgrimes} 7851573Srgrimes 7861573Srgrimesstatic int 7871573Srgrimesg_stat(fn, sb, pglob) 7881573Srgrimes register Char *fn; 7891573Srgrimes struct stat *sb; 7901573Srgrimes glob_t *pglob; 7911573Srgrimes{ 7921573Srgrimes char buf[MAXPATHLEN]; 7931573Srgrimes 7941573Srgrimes g_Ctoc(fn, buf); 7951573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 7961573Srgrimes return((*pglob->gl_stat)(buf, sb)); 7971573Srgrimes return(stat(buf, sb)); 7981573Srgrimes} 7991573Srgrimes 8001573Srgrimesstatic Char * 8011573Srgrimesg_strchr(str, ch) 8021573Srgrimes Char *str; 8031573Srgrimes int ch; 8041573Srgrimes{ 8051573Srgrimes do { 8061573Srgrimes if (*str == ch) 8071573Srgrimes return (str); 8081573Srgrimes } while (*str++); 8091573Srgrimes return (NULL); 8101573Srgrimes} 8111573Srgrimes 8121573Srgrimes#ifdef notdef 8131573Srgrimesstatic Char * 8141573Srgrimesg_strcat(dst, src) 8151573Srgrimes Char *dst; 8161573Srgrimes const Char* src; 8171573Srgrimes{ 8181573Srgrimes Char *sdst = dst; 8191573Srgrimes 8201573Srgrimes while (*dst++) 8211573Srgrimes continue; 8221573Srgrimes --dst; 8231573Srgrimes while((*dst++ = *src++) != EOS) 8241573Srgrimes continue; 8251573Srgrimes 8261573Srgrimes return (sdst); 8271573Srgrimes} 8281573Srgrimes#endif 8291573Srgrimes 8301573Srgrimesstatic void 8311573Srgrimesg_Ctoc(str, buf) 8321573Srgrimes register const Char *str; 8331573Srgrimes char *buf; 8341573Srgrimes{ 8351573Srgrimes register char *dc; 8361573Srgrimes 8371573Srgrimes for (dc = buf; (*dc++ = *str++) != EOS;) 8381573Srgrimes continue; 8391573Srgrimes} 8401573Srgrimes 8411573Srgrimes#ifdef DEBUG 8428870Srgrimesstatic void 8431573Srgrimesqprintf(str, s) 8441573Srgrimes const char *str; 8451573Srgrimes register Char *s; 8461573Srgrimes{ 8471573Srgrimes register Char *p; 8481573Srgrimes 8491573Srgrimes (void)printf("%s:\n", str); 8501573Srgrimes for (p = s; *p; p++) 8511573Srgrimes (void)printf("%c", CHAR(*p)); 8521573Srgrimes (void)printf("\n"); 8531573Srgrimes for (p = s; *p; p++) 8541573Srgrimes (void)printf("%c", *p & M_PROTECT ? '"' : ' '); 8551573Srgrimes (void)printf("\n"); 8561573Srgrimes for (p = s; *p; p++) 8571573Srgrimes (void)printf("%c", ismeta(*p) ? '_' : ' '); 8581573Srgrimes (void)printf("\n"); 8591573Srgrimes} 8601573Srgrimes#endif 861