glob.c revision 24158
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 /* 3618870Srgrimes * handle a plain ~ or ~/ by expanding $HOME 3621573Srgrimes * first and then trying the password file 3631573Srgrimes */ 3641573Srgrimes if ((h = getenv("HOME")) == NULL) { 3651573Srgrimes if ((pwd = getpwuid(getuid())) == NULL) 3661573Srgrimes return pattern; 3671573Srgrimes else 3681573Srgrimes h = pwd->pw_dir; 3691573Srgrimes } 3701573Srgrimes } 3711573Srgrimes else { 3721573Srgrimes /* 3731573Srgrimes * Expand a ~user 3741573Srgrimes */ 3751573Srgrimes if ((pwd = getpwnam((char*) patbuf)) == NULL) 3761573Srgrimes return pattern; 3771573Srgrimes else 3781573Srgrimes h = pwd->pw_dir; 3791573Srgrimes } 3801573Srgrimes 3811573Srgrimes /* Copy the home directory */ 38224158Simp for (b = patbuf; b < eb && *h; *b++ = *h++) 3831573Srgrimes continue; 3848870Srgrimes 3851573Srgrimes /* Append the rest of the pattern */ 38624158Simp while (b < eb && (*b++ = *p++) != EOS) 3871573Srgrimes continue; 38824158Simp *b = EOS; 3891573Srgrimes 3901573Srgrimes return patbuf; 3911573Srgrimes} 3921573Srgrimes 3938870Srgrimes 3941573Srgrimes/* 3951573Srgrimes * The main glob() routine: compiles the pattern (optionally processing 3961573Srgrimes * quotes), calls glob1() to do the real pattern matching, and finally 3971573Srgrimes * sorts the list (unless unsorted operation is requested). Returns 0 3981573Srgrimes * if things went well, nonzero if errors occurred. It is not an error 3991573Srgrimes * to find no matches. 4001573Srgrimes */ 4011573Srgrimesstatic int 4021573Srgrimesglob0(pattern, pglob) 4031573Srgrimes const Char *pattern; 4041573Srgrimes glob_t *pglob; 4051573Srgrimes{ 4061573Srgrimes const Char *qpatnext; 4071573Srgrimes int c, err, oldpathc; 4081573Srgrimes Char *bufnext, patbuf[MAXPATHLEN+1]; 4091573Srgrimes 41024158Simp qpatnext = globtilde(pattern, patbuf, sizeof(patbuf) / sizeof(Char), 41124158Simp pglob); 4121573Srgrimes oldpathc = pglob->gl_pathc; 4131573Srgrimes bufnext = patbuf; 4141573Srgrimes 4151573Srgrimes /* We don't need to check for buffer overflow any more. */ 4161573Srgrimes while ((c = *qpatnext++) != EOS) { 4171573Srgrimes switch (c) { 4181573Srgrimes case LBRACKET: 4191573Srgrimes c = *qpatnext; 4201573Srgrimes if (c == NOT) 4211573Srgrimes ++qpatnext; 4221573Srgrimes if (*qpatnext == EOS || 4231573Srgrimes g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) { 4241573Srgrimes *bufnext++ = LBRACKET; 4251573Srgrimes if (c == NOT) 4261573Srgrimes --qpatnext; 4271573Srgrimes break; 4281573Srgrimes } 4291573Srgrimes *bufnext++ = M_SET; 4301573Srgrimes if (c == NOT) 4311573Srgrimes *bufnext++ = M_NOT; 4321573Srgrimes c = *qpatnext++; 4331573Srgrimes do { 4341573Srgrimes *bufnext++ = CHAR(c); 4351573Srgrimes if (*qpatnext == RANGE && 4361573Srgrimes (c = qpatnext[1]) != RBRACKET) { 4371573Srgrimes *bufnext++ = M_RNG; 4381573Srgrimes *bufnext++ = CHAR(c); 4391573Srgrimes qpatnext += 2; 4401573Srgrimes } 4411573Srgrimes } while ((c = *qpatnext++) != RBRACKET); 4421573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4431573Srgrimes *bufnext++ = M_END; 4441573Srgrimes break; 4451573Srgrimes case QUESTION: 4461573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4471573Srgrimes *bufnext++ = M_ONE; 4481573Srgrimes break; 4491573Srgrimes case STAR: 4501573Srgrimes pglob->gl_flags |= GLOB_MAGCHAR; 4518870Srgrimes /* collapse adjacent stars to one, 4521573Srgrimes * to avoid exponential behavior 4531573Srgrimes */ 4541573Srgrimes if (bufnext == patbuf || bufnext[-1] != M_ALL) 4551573Srgrimes *bufnext++ = M_ALL; 4561573Srgrimes break; 4571573Srgrimes default: 4581573Srgrimes *bufnext++ = CHAR(c); 4591573Srgrimes break; 4601573Srgrimes } 4611573Srgrimes } 4621573Srgrimes *bufnext = EOS; 4631573Srgrimes#ifdef DEBUG 4641573Srgrimes qprintf("glob0:", patbuf); 4651573Srgrimes#endif 4661573Srgrimes 4671573Srgrimes if ((err = glob1(patbuf, pglob)) != 0) 4681573Srgrimes return(err); 4691573Srgrimes 4701573Srgrimes /* 4718870Srgrimes * If there was no match we are going to append the pattern 4721573Srgrimes * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified 4731573Srgrimes * and the pattern did not contain any magic characters 4741573Srgrimes * GLOB_NOMAGIC is there just for compatibility with csh. 4751573Srgrimes */ 4768870Srgrimes if (pglob->gl_pathc == oldpathc && 4778870Srgrimes ((pglob->gl_flags & GLOB_NOCHECK) || 4781573Srgrimes ((pglob->gl_flags & GLOB_NOMAGIC) && 4791573Srgrimes !(pglob->gl_flags & GLOB_MAGCHAR)))) 4801573Srgrimes return(globextend(pattern, pglob)); 4818870Srgrimes else if (!(pglob->gl_flags & GLOB_NOSORT)) 4821573Srgrimes qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, 4831573Srgrimes pglob->gl_pathc - oldpathc, sizeof(char *), compare); 4841573Srgrimes return(0); 4851573Srgrimes} 4861573Srgrimes 4871573Srgrimesstatic int 4881573Srgrimescompare(p, q) 4891573Srgrimes const void *p, *q; 4901573Srgrimes{ 4911573Srgrimes return(strcmp(*(char **)p, *(char **)q)); 4921573Srgrimes} 4931573Srgrimes 4941573Srgrimesstatic int 4951573Srgrimesglob1(pattern, pglob) 4961573Srgrimes Char *pattern; 4971573Srgrimes glob_t *pglob; 4981573Srgrimes{ 4991573Srgrimes Char pathbuf[MAXPATHLEN+1]; 5001573Srgrimes 5011573Srgrimes /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ 5021573Srgrimes if (*pattern == EOS) 5031573Srgrimes return(0); 5041573Srgrimes return(glob2(pathbuf, pathbuf, pattern, pglob)); 5051573Srgrimes} 5061573Srgrimes 5071573Srgrimes/* 5081573Srgrimes * The functions glob2 and glob3 are mutually recursive; there is one level 5091573Srgrimes * of recursion for each segment in the pattern that contains one or more 5101573Srgrimes * meta characters. 5111573Srgrimes */ 5121573Srgrimesstatic int 5131573Srgrimesglob2(pathbuf, pathend, pattern, pglob) 5141573Srgrimes Char *pathbuf, *pathend, *pattern; 5151573Srgrimes glob_t *pglob; 5161573Srgrimes{ 5171573Srgrimes struct stat sb; 5181573Srgrimes Char *p, *q; 5191573Srgrimes int anymeta; 5201573Srgrimes 5211573Srgrimes /* 5221573Srgrimes * Loop over pattern segments until end of pattern or until 5231573Srgrimes * segment with meta character found. 5241573Srgrimes */ 5251573Srgrimes for (anymeta = 0;;) { 5261573Srgrimes if (*pattern == EOS) { /* End of pattern? */ 5271573Srgrimes *pathend = EOS; 5281573Srgrimes if (g_lstat(pathbuf, &sb, pglob)) 5291573Srgrimes return(0); 5308870Srgrimes 5311573Srgrimes if (((pglob->gl_flags & GLOB_MARK) && 5321573Srgrimes pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) 5331573Srgrimes || (S_ISLNK(sb.st_mode) && 5341573Srgrimes (g_stat(pathbuf, &sb, pglob) == 0) && 5351573Srgrimes S_ISDIR(sb.st_mode)))) { 5361573Srgrimes *pathend++ = SEP; 5371573Srgrimes *pathend = EOS; 5381573Srgrimes } 5391573Srgrimes ++pglob->gl_matchc; 5401573Srgrimes return(globextend(pathbuf, pglob)); 5411573Srgrimes } 5421573Srgrimes 5431573Srgrimes /* Find end of next segment, copy tentatively to pathend. */ 5441573Srgrimes q = pathend; 5451573Srgrimes p = pattern; 5461573Srgrimes while (*p != EOS && *p != SEP) { 5471573Srgrimes if (ismeta(*p)) 5481573Srgrimes anymeta = 1; 5491573Srgrimes *q++ = *p++; 5501573Srgrimes } 5511573Srgrimes 5521573Srgrimes if (!anymeta) { /* No expansion, do next segment. */ 5531573Srgrimes pathend = q; 5541573Srgrimes pattern = p; 5551573Srgrimes while (*pattern == SEP) 5561573Srgrimes *pathend++ = *pattern++; 5571573Srgrimes } else /* Need expansion, recurse. */ 5581573Srgrimes return(glob3(pathbuf, pathend, pattern, p, pglob)); 5591573Srgrimes } 5601573Srgrimes /* NOTREACHED */ 5611573Srgrimes} 5621573Srgrimes 5631573Srgrimesstatic int 5641573Srgrimesglob3(pathbuf, pathend, pattern, restpattern, pglob) 5651573Srgrimes Char *pathbuf, *pathend, *pattern, *restpattern; 5661573Srgrimes glob_t *pglob; 5671573Srgrimes{ 5681573Srgrimes register struct dirent *dp; 5691573Srgrimes DIR *dirp; 5701573Srgrimes int err; 5711573Srgrimes char buf[MAXPATHLEN]; 5721573Srgrimes 5731573Srgrimes /* 5741573Srgrimes * The readdirfunc declaration can't be prototyped, because it is 5751573Srgrimes * assigned, below, to two functions which are prototyped in glob.h 5761573Srgrimes * and dirent.h as taking pointers to differently typed opaque 5771573Srgrimes * structures. 5781573Srgrimes */ 5791573Srgrimes struct dirent *(*readdirfunc)(); 5801573Srgrimes 5811573Srgrimes *pathend = EOS; 5821573Srgrimes errno = 0; 5838870Srgrimes 5841573Srgrimes if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { 5851573Srgrimes /* TODO: don't call for ENOENT or ENOTDIR? */ 5861573Srgrimes if (pglob->gl_errfunc) { 5871573Srgrimes g_Ctoc(pathbuf, buf); 5881573Srgrimes if (pglob->gl_errfunc(buf, errno) || 5891573Srgrimes pglob->gl_flags & GLOB_ERR) 5901573Srgrimes return (GLOB_ABEND); 5911573Srgrimes } 5921573Srgrimes return(0); 5931573Srgrimes } 5941573Srgrimes 5951573Srgrimes err = 0; 5961573Srgrimes 5971573Srgrimes /* Search directory for matching names. */ 5981573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 5991573Srgrimes readdirfunc = pglob->gl_readdir; 6001573Srgrimes else 6011573Srgrimes readdirfunc = readdir; 6021573Srgrimes while ((dp = (*readdirfunc)(dirp))) { 6031573Srgrimes register u_char *sc; 6041573Srgrimes register Char *dc; 6051573Srgrimes 6061573Srgrimes /* Initial DOT must be matched literally. */ 6071573Srgrimes if (dp->d_name[0] == DOT && *pattern != DOT) 6081573Srgrimes continue; 6098870Srgrimes for (sc = (u_char *) dp->d_name, dc = pathend; 6101573Srgrimes (*dc++ = *sc++) != EOS;) 6111573Srgrimes continue; 6121573Srgrimes if (!match(pathend, pattern, restpattern)) { 6131573Srgrimes *pathend = EOS; 6141573Srgrimes continue; 6151573Srgrimes } 6161573Srgrimes err = glob2(pathbuf, --dc, restpattern, pglob); 6171573Srgrimes if (err) 6181573Srgrimes break; 6191573Srgrimes } 6201573Srgrimes 6211573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 6221573Srgrimes (*pglob->gl_closedir)(dirp); 6231573Srgrimes else 6241573Srgrimes closedir(dirp); 6251573Srgrimes return(err); 6261573Srgrimes} 6271573Srgrimes 6281573Srgrimes 6291573Srgrimes/* 6301573Srgrimes * Extend the gl_pathv member of a glob_t structure to accomodate a new item, 6311573Srgrimes * add the new item, and update gl_pathc. 6321573Srgrimes * 6331573Srgrimes * This assumes the BSD realloc, which only copies the block when its size 6341573Srgrimes * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic 6351573Srgrimes * behavior. 6361573Srgrimes * 6371573Srgrimes * Return 0 if new item added, error code if memory couldn't be allocated. 6381573Srgrimes * 6391573Srgrimes * Invariant of the glob_t structure: 6401573Srgrimes * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and 6411573Srgrimes * gl_pathv points to (gl_offs + gl_pathc + 1) items. 6421573Srgrimes */ 6431573Srgrimesstatic int 6441573Srgrimesglobextend(path, pglob) 6451573Srgrimes const Char *path; 6461573Srgrimes glob_t *pglob; 6471573Srgrimes{ 6481573Srgrimes register char **pathv; 6491573Srgrimes register int i; 6501573Srgrimes u_int newsize; 6511573Srgrimes char *copy; 6521573Srgrimes const Char *p; 6531573Srgrimes 6541573Srgrimes newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); 6558870Srgrimes pathv = pglob->gl_pathv ? 6561573Srgrimes realloc((char *)pglob->gl_pathv, newsize) : 6571573Srgrimes malloc(newsize); 6581573Srgrimes if (pathv == NULL) 6591573Srgrimes return(GLOB_NOSPACE); 6601573Srgrimes 6611573Srgrimes if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { 6621573Srgrimes /* first time around -- clear initial gl_offs items */ 6631573Srgrimes pathv += pglob->gl_offs; 6641573Srgrimes for (i = pglob->gl_offs; --i >= 0; ) 6651573Srgrimes *--pathv = NULL; 6661573Srgrimes } 6671573Srgrimes pglob->gl_pathv = pathv; 6681573Srgrimes 6691573Srgrimes for (p = path; *p++;) 6701573Srgrimes continue; 6711573Srgrimes if ((copy = malloc(p - path)) != NULL) { 6721573Srgrimes g_Ctoc(path, copy); 6731573Srgrimes pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; 6741573Srgrimes } 6751573Srgrimes pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; 6761573Srgrimes return(copy == NULL ? GLOB_NOSPACE : 0); 6771573Srgrimes} 6781573Srgrimes 6791573Srgrimes/* 6801573Srgrimes * pattern matching function for filenames. Each occurrence of the * 6811573Srgrimes * pattern causes a recursion level. 6821573Srgrimes */ 6831573Srgrimesstatic int 6841573Srgrimesmatch(name, pat, patend) 6851573Srgrimes register Char *name, *pat, *patend; 6861573Srgrimes{ 6871573Srgrimes int ok, negate_range; 6881573Srgrimes Char c, k; 6891573Srgrimes 6901573Srgrimes while (pat < patend) { 6911573Srgrimes c = *pat++; 6921573Srgrimes switch (c & M_MASK) { 6931573Srgrimes case M_ALL: 6941573Srgrimes if (pat == patend) 6951573Srgrimes return(1); 6968870Srgrimes do 6971573Srgrimes if (match(name, pat, patend)) 6981573Srgrimes return(1); 6991573Srgrimes while (*name++ != EOS); 7001573Srgrimes return(0); 7011573Srgrimes case M_ONE: 7021573Srgrimes if (*name++ == EOS) 7031573Srgrimes return(0); 7041573Srgrimes break; 7051573Srgrimes case M_SET: 7061573Srgrimes ok = 0; 7071573Srgrimes if ((k = *name++) == EOS) 7081573Srgrimes return(0); 7091573Srgrimes if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS) 7101573Srgrimes ++pat; 7111573Srgrimes while (((c = *pat++) & M_MASK) != M_END) 7121573Srgrimes if ((*pat & M_MASK) == M_RNG) { 71319276Sache if ( __collate_range_cmp(CHAR(c), CHAR(k)) <= 0 71419276Sache && __collate_range_cmp(CHAR(k), CHAR(pat[1])) <= 0 71517528Sache ) 7161573Srgrimes ok = 1; 7171573Srgrimes pat += 2; 7181573Srgrimes } else if (c == k) 7191573Srgrimes ok = 1; 7201573Srgrimes if (ok == negate_range) 7211573Srgrimes return(0); 7221573Srgrimes break; 7231573Srgrimes default: 7241573Srgrimes if (*name++ != c) 7251573Srgrimes return(0); 7261573Srgrimes break; 7271573Srgrimes } 7281573Srgrimes } 7291573Srgrimes return(*name == EOS); 7301573Srgrimes} 7311573Srgrimes 7321573Srgrimes/* Free allocated data belonging to a glob_t structure. */ 7331573Srgrimesvoid 7341573Srgrimesglobfree(pglob) 7351573Srgrimes glob_t *pglob; 7361573Srgrimes{ 7371573Srgrimes register int i; 7381573Srgrimes register char **pp; 7391573Srgrimes 7401573Srgrimes if (pglob->gl_pathv != NULL) { 7411573Srgrimes pp = pglob->gl_pathv + pglob->gl_offs; 7421573Srgrimes for (i = pglob->gl_pathc; i--; ++pp) 7431573Srgrimes if (*pp) 7441573Srgrimes free(*pp); 7451573Srgrimes free(pglob->gl_pathv); 7461573Srgrimes } 7471573Srgrimes} 7481573Srgrimes 7491573Srgrimesstatic DIR * 7501573Srgrimesg_opendir(str, pglob) 7511573Srgrimes register Char *str; 7521573Srgrimes glob_t *pglob; 7531573Srgrimes{ 7541573Srgrimes char buf[MAXPATHLEN]; 7551573Srgrimes 7561573Srgrimes if (!*str) 7571573Srgrimes strcpy(buf, "."); 7581573Srgrimes else 7591573Srgrimes g_Ctoc(str, buf); 7601573Srgrimes 7611573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 7621573Srgrimes return((*pglob->gl_opendir)(buf)); 7631573Srgrimes 7641573Srgrimes return(opendir(buf)); 7651573Srgrimes} 7661573Srgrimes 7671573Srgrimesstatic int 7681573Srgrimesg_lstat(fn, sb, pglob) 7691573Srgrimes register Char *fn; 7701573Srgrimes struct stat *sb; 7711573Srgrimes glob_t *pglob; 7721573Srgrimes{ 7731573Srgrimes char buf[MAXPATHLEN]; 7741573Srgrimes 7751573Srgrimes g_Ctoc(fn, buf); 7761573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 7771573Srgrimes return((*pglob->gl_lstat)(buf, sb)); 7781573Srgrimes return(lstat(buf, sb)); 7791573Srgrimes} 7801573Srgrimes 7811573Srgrimesstatic int 7821573Srgrimesg_stat(fn, sb, pglob) 7831573Srgrimes register Char *fn; 7841573Srgrimes struct stat *sb; 7851573Srgrimes glob_t *pglob; 7861573Srgrimes{ 7871573Srgrimes char buf[MAXPATHLEN]; 7881573Srgrimes 7891573Srgrimes g_Ctoc(fn, buf); 7901573Srgrimes if (pglob->gl_flags & GLOB_ALTDIRFUNC) 7911573Srgrimes return((*pglob->gl_stat)(buf, sb)); 7921573Srgrimes return(stat(buf, sb)); 7931573Srgrimes} 7941573Srgrimes 7951573Srgrimesstatic Char * 7961573Srgrimesg_strchr(str, ch) 7971573Srgrimes Char *str; 7981573Srgrimes int ch; 7991573Srgrimes{ 8001573Srgrimes do { 8011573Srgrimes if (*str == ch) 8021573Srgrimes return (str); 8031573Srgrimes } while (*str++); 8041573Srgrimes return (NULL); 8051573Srgrimes} 8061573Srgrimes 8071573Srgrimes#ifdef notdef 8081573Srgrimesstatic Char * 8091573Srgrimesg_strcat(dst, src) 8101573Srgrimes Char *dst; 8111573Srgrimes const Char* src; 8121573Srgrimes{ 8131573Srgrimes Char *sdst = dst; 8141573Srgrimes 8151573Srgrimes while (*dst++) 8161573Srgrimes continue; 8171573Srgrimes --dst; 8181573Srgrimes while((*dst++ = *src++) != EOS) 8191573Srgrimes continue; 8201573Srgrimes 8211573Srgrimes return (sdst); 8221573Srgrimes} 8231573Srgrimes#endif 8241573Srgrimes 8251573Srgrimesstatic void 8261573Srgrimesg_Ctoc(str, buf) 8271573Srgrimes register const Char *str; 8281573Srgrimes char *buf; 8291573Srgrimes{ 8301573Srgrimes register char *dc; 8311573Srgrimes 8321573Srgrimes for (dc = buf; (*dc++ = *str++) != EOS;) 8331573Srgrimes continue; 8341573Srgrimes} 8351573Srgrimes 8361573Srgrimes#ifdef DEBUG 8378870Srgrimesstatic void 8381573Srgrimesqprintf(str, s) 8391573Srgrimes const char *str; 8401573Srgrimes register Char *s; 8411573Srgrimes{ 8421573Srgrimes register Char *p; 8431573Srgrimes 8441573Srgrimes (void)printf("%s:\n", str); 8451573Srgrimes for (p = s; *p; p++) 8461573Srgrimes (void)printf("%c", CHAR(*p)); 8471573Srgrimes (void)printf("\n"); 8481573Srgrimes for (p = s; *p; p++) 8491573Srgrimes (void)printf("%c", *p & M_PROTECT ? '"' : ' '); 8501573Srgrimes (void)printf("\n"); 8511573Srgrimes for (p = s; *p; p++) 8521573Srgrimes (void)printf("%c", ismeta(*p) ? '_' : ' '); 8531573Srgrimes (void)printf("\n"); 8541573Srgrimes} 8551573Srgrimes#endif 856