glob.c revision 228755
1214501Srpaulo/* 2214501Srpaulo * Copyright (c) 1989, 1993 3214501Srpaulo * The Regents of the University of California. All rights reserved. 4214501Srpaulo * 5214501Srpaulo * This code is derived from software contributed to Berkeley by 6214501Srpaulo * Guido van Rossum. 7214501Srpaulo * 8214501Srpaulo * Copyright (c) 2011 The FreeBSD Foundation 9214501Srpaulo * All rights reserved. 10214501Srpaulo * Portions of this software were developed by David Chisnall 11214501Srpaulo * under sponsorship from the FreeBSD Foundation. 12214501Srpaulo * 13214501Srpaulo * Redistribution and use in source and binary forms, with or without 14214501Srpaulo * modification, are permitted provided that the following conditions 15214501Srpaulo * are met: 16214501Srpaulo * 1. Redistributions of source code must retain the above copyright 17214501Srpaulo * notice, this list of conditions and the following disclaimer. 18214501Srpaulo * 2. Redistributions in binary form must reproduce the above copyright 19214501Srpaulo * notice, this list of conditions and the following disclaimer in the 20214501Srpaulo * documentation and/or other materials provided with the distribution. 21214501Srpaulo * 4. Neither the name of the University nor the names of its contributors 22252726Srpaulo * may be used to endorse or promote products derived from this software 23214501Srpaulo * without specific prior written permission. 24252726Srpaulo * 25214501Srpaulo * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26214501Srpaulo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27214501Srpaulo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28214501Srpaulo * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29214501Srpaulo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30214501Srpaulo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31214501Srpaulo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32214501Srpaulo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33214501Srpaulo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34214501Srpaulo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35214501Srpaulo * SUCH DAMAGE. 36214501Srpaulo */ 37214501Srpaulo 38214501Srpaulo#if defined(LIBC_SCCS) && !defined(lint) 39214501Srpaulostatic char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; 40214501Srpaulo#endif /* LIBC_SCCS and not lint */ 41214501Srpaulo#include <sys/cdefs.h> 42214501Srpaulo__FBSDID("$FreeBSD: head/lib/libc/gen/glob.c 228755 2011-12-20 22:56:44Z eadler $"); 43214501Srpaulo 44214501Srpaulo/* 45214501Srpaulo * glob(3) -- a superset of the one defined in POSIX 1003.2. 46214501Srpaulo * 47214501Srpaulo * The [!...] convention to negate a range is supported (SysV, Posix, ksh). 48214501Srpaulo * 49214501Srpaulo * Optional extra services, controlled by flags not defined by POSIX: 50214501Srpaulo * 51214501Srpaulo * GLOB_QUOTE: 52214501Srpaulo * Escaping convention: \ inhibits any special meaning the following 53214501Srpaulo * character might have (except \ at end of string is retained). 54214501Srpaulo * GLOB_MAGCHAR: 55214501Srpaulo * Set in gl_flags if pattern contained a globbing character. 56214501Srpaulo * GLOB_NOMAGIC: 57214501Srpaulo * Same as GLOB_NOCHECK, but it will only append pattern if it did 58214501Srpaulo * not contain any magic characters. [Used in csh style globbing] 59214501Srpaulo * GLOB_ALTDIRFUNC: 60214501Srpaulo * Use alternately specified directory access functions. 61214501Srpaulo * GLOB_TILDE: 62214501Srpaulo * expand ~user/foo to the /home/dir/of/user/foo 63214501Srpaulo * GLOB_BRACE: 64214501Srpaulo * expand {1,2}{a,b} to 1a 1b 2a 2b 65214501Srpaulo * gl_matchc: 66214501Srpaulo * Number of matches in the current invocation of glob. 67214501Srpaulo */ 68214501Srpaulo 69214501Srpaulo/* 70214501Srpaulo * Some notes on multibyte character support: 71214501Srpaulo * 1. Patterns with illegal byte sequences match nothing - even if 72214501Srpaulo * GLOB_NOCHECK is specified. 73214501Srpaulo * 2. Illegal byte sequences in filenames are handled by treating them as 74214501Srpaulo * single-byte characters with a value of the first byte of the sequence 75214501Srpaulo * cast to wchar_t. 76214501Srpaulo * 3. State-dependent encodings are not currently supported. 77214501Srpaulo */ 78214501Srpaulo 79214501Srpaulo#include <sys/param.h> 80214501Srpaulo#include <sys/stat.h> 81214501Srpaulo 82214501Srpaulo#include <ctype.h> 83214501Srpaulo#include <dirent.h> 84214501Srpaulo#include <errno.h> 85214501Srpaulo#include <glob.h> 86214501Srpaulo#include <limits.h> 87214501Srpaulo#include <pwd.h> 88214501Srpaulo#include <stdint.h> 89214501Srpaulo#include <stdio.h> 90214501Srpaulo#include <stdlib.h> 91214501Srpaulo#include <string.h> 92214501Srpaulo#include <unistd.h> 93214501Srpaulo#include <wchar.h> 94214501Srpaulo 95214501Srpaulo#include "collate.h" 96214501Srpaulo 97214501Srpaulo#define DOLLAR '$' 98214501Srpaulo#define DOT '.' 99214501Srpaulo#define EOS '\0' 100214501Srpaulo#define LBRACKET '[' 101214501Srpaulo#define NOT '!' 102214501Srpaulo#define QUESTION '?' 103214501Srpaulo#define QUOTE '\\' 104214501Srpaulo#define RANGE '-' 105214501Srpaulo#define RBRACKET ']' 106214501Srpaulo#define SEP '/' 107214501Srpaulo#define STAR '*' 108214501Srpaulo#define TILDE '~' 109214501Srpaulo#define UNDERSCORE '_' 110214501Srpaulo#define LBRACE '{' 111214501Srpaulo#define RBRACE '}' 112214501Srpaulo#define SLASH '/' 113214501Srpaulo#define COMMA ',' 114214501Srpaulo 115214501Srpaulo#ifndef DEBUG 116214501Srpaulo 117214501Srpaulo#define M_QUOTE 0x8000000000ULL 118214501Srpaulo#define M_PROTECT 0x4000000000ULL 119214501Srpaulo#define M_MASK 0xffffffffffULL 120214501Srpaulo#define M_CHAR 0x00ffffffffULL 121214501Srpaulo 122214501Srpaulotypedef uint_fast64_t Char; 123214501Srpaulo 124214501Srpaulo#else 125214501Srpaulo 126214501Srpaulo#define M_QUOTE 0x80 127214501Srpaulo#define M_PROTECT 0x40 128214501Srpaulo#define M_MASK 0xff 129214501Srpaulo#define M_CHAR 0x7f 130214501Srpaulo 131214501Srpaulotypedef char Char; 132214501Srpaulo 133214501Srpaulo#endif 134214501Srpaulo 135214501Srpaulo 136214501Srpaulo#define CHAR(c) ((Char)((c)&M_CHAR)) 137214501Srpaulo#define META(c) ((Char)((c)|M_QUOTE)) 138214501Srpaulo#define M_ALL META('*') 139214501Srpaulo#define M_END META(']') 140214501Srpaulo#define M_NOT META('!') 141214501Srpaulo#define M_ONE META('?') 142214501Srpaulo#define M_RNG META('-') 143214501Srpaulo#define M_SET META('[') 144214501Srpaulo#define ismeta(c) (((c)&M_QUOTE) != 0) 145214501Srpaulo 146214501Srpaulo 147214501Srpaulostatic int compare(const void *, const void *); 148214501Srpaulostatic int g_Ctoc(const Char *, char *, size_t); 149214501Srpaulostatic int g_lstat(Char *, struct stat *, glob_t *); 150214501Srpaulostatic DIR *g_opendir(Char *, glob_t *); 151214501Srpaulostatic const Char *g_strchr(const Char *, wchar_t); 152214501Srpaulo#ifdef notdef 153214501Srpaulostatic Char *g_strcat(Char *, const Char *); 154214501Srpaulo#endif 155214501Srpaulostatic int g_stat(Char *, struct stat *, glob_t *); 156214501Srpaulostatic int glob0(const Char *, glob_t *, size_t *); 157214501Srpaulostatic int glob1(Char *, glob_t *, size_t *); 158214501Srpaulostatic int glob2(Char *, Char *, Char *, Char *, glob_t *, size_t *); 159214501Srpaulostatic int glob3(Char *, Char *, Char *, Char *, Char *, glob_t *, size_t *); 160214501Srpaulostatic int globextend(const Char *, glob_t *, size_t *); 161214501Srpaulostatic const Char * 162214501Srpaulo globtilde(const Char *, Char *, size_t, glob_t *); 163214501Srpaulostatic int globexp1(const Char *, glob_t *, size_t *); 164214501Srpaulostatic int globexp2(const Char *, const Char *, glob_t *, int *, size_t *); 165214501Srpaulostatic int match(Char *, Char *, Char *); 166214501Srpaulo#ifdef DEBUG 167214501Srpaulostatic void qprintf(const char *, Char *); 168214501Srpaulo#endif 169214501Srpaulo 170214501Srpauloint 171214501Srpauloglob(const char * __restrict pattern, int flags, 172214501Srpaulo int (*errfunc)(const char *, int), glob_t * __restrict pglob) 173214501Srpaulo{ 174214501Srpaulo const char *patnext; 175214501Srpaulo size_t limit; 176214501Srpaulo Char *bufnext, *bufend, patbuf[MAXPATHLEN], prot; 177214501Srpaulo mbstate_t mbs; 178214501Srpaulo wchar_t wc; 179214501Srpaulo size_t clen; 180214501Srpaulo 181214501Srpaulo patnext = pattern; 182214501Srpaulo if (!(flags & GLOB_APPEND)) { 183214501Srpaulo pglob->gl_pathc = 0; 184214501Srpaulo pglob->gl_pathv = NULL; 185214501Srpaulo if (!(flags & GLOB_DOOFFS)) 186214501Srpaulo pglob->gl_offs = 0; 187214501Srpaulo } 188214501Srpaulo if (flags & GLOB_LIMIT) { 189214501Srpaulo limit = pglob->gl_matchc; 190214501Srpaulo if (limit == 0) 191214501Srpaulo limit = ARG_MAX; 192214501Srpaulo } else 193214501Srpaulo limit = 0; 194214501Srpaulo pglob->gl_flags = flags & ~GLOB_MAGCHAR; 195214501Srpaulo pglob->gl_errfunc = errfunc; 196214501Srpaulo pglob->gl_matchc = 0; 197214501Srpaulo 198214501Srpaulo bufnext = patbuf; 199214501Srpaulo bufend = bufnext + MAXPATHLEN - 1; 200214501Srpaulo if (flags & GLOB_NOESCAPE) { 201214501Srpaulo memset(&mbs, 0, sizeof(mbs)); 202214501Srpaulo while (bufend - bufnext >= MB_CUR_MAX) { 203214501Srpaulo clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs); 204214501Srpaulo if (clen == (size_t)-1 || clen == (size_t)-2) 205214501Srpaulo return (GLOB_NOMATCH); 206214501Srpaulo else if (clen == 0) 207214501Srpaulo break; 208214501Srpaulo *bufnext++ = wc; 209214501Srpaulo patnext += clen; 210214501Srpaulo } 211214501Srpaulo } else { 212214501Srpaulo /* Protect the quoted characters. */ 213214501Srpaulo memset(&mbs, 0, sizeof(mbs)); 214214501Srpaulo while (bufend - bufnext >= MB_CUR_MAX) { 215214501Srpaulo if (*patnext == QUOTE) { 216214501Srpaulo if (*++patnext == EOS) { 217214501Srpaulo *bufnext++ = QUOTE | M_PROTECT; 218214501Srpaulo continue; 219214501Srpaulo } 220214501Srpaulo prot = M_PROTECT; 221214501Srpaulo } else 222214501Srpaulo prot = 0; 223214501Srpaulo clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs); 224214501Srpaulo if (clen == (size_t)-1 || clen == (size_t)-2) 225214501Srpaulo return (GLOB_NOMATCH); 226214501Srpaulo else if (clen == 0) 227214501Srpaulo break; 228214501Srpaulo *bufnext++ = wc | prot; 229214501Srpaulo patnext += clen; 230214501Srpaulo } 231214501Srpaulo } 232214501Srpaulo *bufnext = EOS; 233214501Srpaulo 234214501Srpaulo if (flags & GLOB_BRACE) 235214501Srpaulo return (globexp1(patbuf, pglob, &limit)); 236214501Srpaulo else 237214501Srpaulo return (glob0(patbuf, pglob, &limit)); 238214501Srpaulo} 239214501Srpaulo 240214501Srpaulo/* 241214501Srpaulo * Expand recursively a glob {} pattern. When there is no more expansion 242214501Srpaulo * invoke the standard globbing routine to glob the rest of the magic 243214501Srpaulo * characters 244214501Srpaulo */ 245214501Srpaulostatic int 246214501Srpauloglobexp1(const Char *pattern, glob_t *pglob, size_t *limit) 247214501Srpaulo{ 248214501Srpaulo const Char* ptr = pattern; 249214501Srpaulo int rv; 250214501Srpaulo 251214501Srpaulo /* Protect a single {}, for find(1), like csh */ 252214501Srpaulo if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) 253214501Srpaulo return glob0(pattern, pglob, limit); 254214501Srpaulo 255214501Srpaulo while ((ptr = g_strchr(ptr, LBRACE)) != NULL) 256214501Srpaulo if (!globexp2(ptr, pattern, pglob, &rv, limit)) 257214501Srpaulo return rv; 258214501Srpaulo 259214501Srpaulo return glob0(pattern, pglob, limit); 260214501Srpaulo} 261214501Srpaulo 262214501Srpaulo 263214501Srpaulo/* 264214501Srpaulo * Recursive brace globbing helper. Tries to expand a single brace. 265214501Srpaulo * If it succeeds then it invokes globexp1 with the new pattern. 266214501Srpaulo * If it fails then it tries to glob the rest of the pattern and returns. 267214501Srpaulo */ 268214501Srpaulostatic int 269214501Srpauloglobexp2(const Char *ptr, const Char *pattern, glob_t *pglob, int *rv, size_t *limit) 270214501Srpaulo{ 271214501Srpaulo int i; 272214501Srpaulo Char *lm, *ls; 273214501Srpaulo const Char *pe, *pm, *pm1, *pl; 274214501Srpaulo Char patbuf[MAXPATHLEN]; 275214501Srpaulo 276214501Srpaulo /* copy part up to the brace */ 277214501Srpaulo for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) 278214501Srpaulo continue; 279214501Srpaulo *lm = EOS; 280214501Srpaulo ls = lm; 281214501Srpaulo 282214501Srpaulo /* Find the balanced brace */ 283214501Srpaulo for (i = 0, pe = ++ptr; *pe; pe++) 284214501Srpaulo if (*pe == LBRACKET) { 285214501Srpaulo /* Ignore everything between [] */ 286214501Srpaulo for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++) 287214501Srpaulo continue; 288214501Srpaulo if (*pe == EOS) { 289214501Srpaulo /* 290214501Srpaulo * We could not find a matching RBRACKET. 291214501Srpaulo * Ignore and just look for RBRACE 292214501Srpaulo */ 293214501Srpaulo pe = pm; 294214501Srpaulo } 295214501Srpaulo } 296214501Srpaulo else if (*pe == LBRACE) 297214501Srpaulo i++; 298214501Srpaulo else if (*pe == RBRACE) { 299214501Srpaulo if (i == 0) 300214501Srpaulo break; 301214501Srpaulo i--; 302214501Srpaulo } 303214501Srpaulo 304214501Srpaulo /* Non matching braces; just glob the pattern */ 305214501Srpaulo if (i != 0 || *pe == EOS) { 306214501Srpaulo *rv = glob0(patbuf, pglob, limit); 307214501Srpaulo return (0); 308214501Srpaulo } 309214501Srpaulo 310214501Srpaulo for (i = 0, pl = pm = ptr; pm <= pe; pm++) 311214501Srpaulo switch (*pm) { 312214501Srpaulo case LBRACKET: 313214501Srpaulo /* Ignore everything between [] */ 314214501Srpaulo for (pm1 = pm++; *pm != RBRACKET && *pm != EOS; pm++) 315214501Srpaulo continue; 316214501Srpaulo if (*pm == EOS) { 317214501Srpaulo /* 318214501Srpaulo * We could not find a matching RBRACKET. 319214501Srpaulo * Ignore and just look for RBRACE 320214501Srpaulo */ 321214501Srpaulo pm = pm1; 322214501Srpaulo } 323214501Srpaulo break; 324214501Srpaulo 325214501Srpaulo case LBRACE: 326214501Srpaulo i++; 327214501Srpaulo break; 328214501Srpaulo 329214501Srpaulo case RBRACE: 330214501Srpaulo if (i) { 331214501Srpaulo i--; 332214501Srpaulo break; 333214501Srpaulo } 334214501Srpaulo /* FALLTHROUGH */ 335214501Srpaulo case COMMA: 336214501Srpaulo if (i && *pm == COMMA) 337214501Srpaulo break; 338214501Srpaulo else { 339252726Srpaulo /* Append the current string */ 340252726Srpaulo for (lm = ls; (pl < pm); *lm++ = *pl++) 341252726Srpaulo continue; 342214501Srpaulo /* 343214501Srpaulo * Append the rest of the pattern after the 344214501Srpaulo * closing brace 345214501Srpaulo */ 346214501Srpaulo for (pl = pe + 1; (*lm++ = *pl++) != EOS;) 347214501Srpaulo continue; 348214501Srpaulo 349214501Srpaulo /* Expand the current pattern */ 350214501Srpaulo#ifdef DEBUG 351214501Srpaulo qprintf("globexp2:", patbuf); 352214501Srpaulo#endif 353214501Srpaulo *rv = globexp1(patbuf, pglob, limit); 354214501Srpaulo 355214501Srpaulo /* move after the comma, to the next string */ 356214501Srpaulo pl = pm + 1; 357214501Srpaulo } 358214501Srpaulo break; 359214501Srpaulo 360214501Srpaulo default: 361214501Srpaulo break; 362214501Srpaulo } 363214501Srpaulo *rv = 0; 364214501Srpaulo return (0); 365214501Srpaulo} 366214501Srpaulo 367214501Srpaulo 368214501Srpaulo 369214501Srpaulo/* 370214501Srpaulo * expand tilde from the passwd file. 371214501Srpaulo */ 372214501Srpaulostatic const Char * 373214501Srpauloglobtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob) 374214501Srpaulo{ 375214501Srpaulo struct passwd *pwd; 376214501Srpaulo char *h; 377214501Srpaulo const Char *p; 378214501Srpaulo Char *b, *eb; 379214501Srpaulo 380214501Srpaulo if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE)) 381214501Srpaulo return (pattern); 382214501Srpaulo 383214501Srpaulo /* 384252726Srpaulo * Copy up to the end of the string or / 385214501Srpaulo */ 386214501Srpaulo eb = &patbuf[patbuf_len - 1]; 387214501Srpaulo for (p = pattern + 1, h = (char *) patbuf; 388214501Srpaulo h < (char *)eb && *p && *p != SLASH; *h++ = *p++) 389214501Srpaulo continue; 390214501Srpaulo 391214501Srpaulo *h = EOS; 392214501Srpaulo 393214501Srpaulo if (((char *) patbuf)[0] == EOS) { 394214501Srpaulo /* 395214501Srpaulo * handle a plain ~ or ~/ by expanding $HOME first (iff 396214501Srpaulo * we're not running setuid or setgid) and then trying 397214501Srpaulo * the password file 398214501Srpaulo */ 399214501Srpaulo if (issetugid() != 0 || 400214501Srpaulo (h = getenv("HOME")) == NULL) { 401214501Srpaulo if (((h = getlogin()) != NULL && 402214501Srpaulo (pwd = getpwnam(h)) != NULL) || 403214501Srpaulo (pwd = getpwuid(getuid())) != NULL) 404214501Srpaulo h = pwd->pw_dir; 405214501Srpaulo else 406214501Srpaulo return (pattern); 407214501Srpaulo } 408214501Srpaulo } 409214501Srpaulo else { 410214501Srpaulo /* 411214501Srpaulo * Expand a ~user 412214501Srpaulo */ 413214501Srpaulo if ((pwd = getpwnam((char*) patbuf)) == NULL) 414214501Srpaulo return (pattern); 415214501Srpaulo else 416214501Srpaulo h = pwd->pw_dir; 417214501Srpaulo } 418214501Srpaulo 419214501Srpaulo /* Copy the home directory */ 420214501Srpaulo for (b = patbuf; b < eb && *h; *b++ = *h++) 421214501Srpaulo continue; 422214501Srpaulo 423214501Srpaulo /* Append the rest of the pattern */ 424214501Srpaulo while (b < eb && (*b++ = *p++) != EOS) 425214501Srpaulo continue; 426214501Srpaulo *b = EOS; 427214501Srpaulo 428214501Srpaulo return (patbuf); 429214501Srpaulo} 430214501Srpaulo 431214501Srpaulo 432214501Srpaulo/* 433214501Srpaulo * The main glob() routine: compiles the pattern (optionally processing 434214501Srpaulo * quotes), calls glob1() to do the real pattern matching, and finally 435214501Srpaulo * sorts the list (unless unsorted operation is requested). Returns 0 436214501Srpaulo * if things went well, nonzero if errors occurred. 437214501Srpaulo */ 438214501Srpaulostatic int 439214501Srpauloglob0(const Char *pattern, glob_t *pglob, size_t *limit) 440214501Srpaulo{ 441214501Srpaulo const Char *qpatnext; 442214501Srpaulo int err; 443214501Srpaulo size_t oldpathc; 444214501Srpaulo Char *bufnext, c, patbuf[MAXPATHLEN]; 445214501Srpaulo 446214501Srpaulo qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob); 447214501Srpaulo oldpathc = pglob->gl_pathc; 448214501Srpaulo bufnext = patbuf; 449214501Srpaulo 450214501Srpaulo /* We don't need to check for buffer overflow any more. */ 451214501Srpaulo while ((c = *qpatnext++) != EOS) { 452214501Srpaulo switch (c) { 453214501Srpaulo case LBRACKET: 454214501Srpaulo c = *qpatnext; 455214501Srpaulo if (c == NOT) 456214501Srpaulo ++qpatnext; 457214501Srpaulo if (*qpatnext == EOS || 458214501Srpaulo g_strchr(qpatnext+1, RBRACKET) == NULL) { 459214501Srpaulo *bufnext++ = LBRACKET; 460214501Srpaulo if (c == NOT) 461214501Srpaulo --qpatnext; 462214501Srpaulo break; 463214501Srpaulo } 464214501Srpaulo *bufnext++ = M_SET; 465214501Srpaulo if (c == NOT) 466214501Srpaulo *bufnext++ = M_NOT; 467214501Srpaulo c = *qpatnext++; 468214501Srpaulo do { 469214501Srpaulo *bufnext++ = CHAR(c); 470214501Srpaulo if (*qpatnext == RANGE && 471214501Srpaulo (c = qpatnext[1]) != RBRACKET) { 472214501Srpaulo *bufnext++ = M_RNG; 473214501Srpaulo *bufnext++ = CHAR(c); 474214501Srpaulo qpatnext += 2; 475214501Srpaulo } 476214501Srpaulo } while ((c = *qpatnext++) != RBRACKET); 477214501Srpaulo pglob->gl_flags |= GLOB_MAGCHAR; 478214501Srpaulo *bufnext++ = M_END; 479214501Srpaulo break; 480252726Srpaulo case QUESTION: 481214501Srpaulo pglob->gl_flags |= GLOB_MAGCHAR; 482252726Srpaulo *bufnext++ = M_ONE; 483214501Srpaulo break; 484214501Srpaulo case STAR: 485214501Srpaulo pglob->gl_flags |= GLOB_MAGCHAR; 486214501Srpaulo /* collapse adjacent stars to one, 487214501Srpaulo * to avoid exponential behavior 488214501Srpaulo */ 489252726Srpaulo if (bufnext == patbuf || bufnext[-1] != M_ALL) 490214501Srpaulo *bufnext++ = M_ALL; 491214501Srpaulo break; 492214501Srpaulo default: 493214501Srpaulo *bufnext++ = CHAR(c); 494214501Srpaulo break; 495214501Srpaulo } 496214501Srpaulo } 497214501Srpaulo *bufnext = EOS; 498214501Srpaulo#ifdef DEBUG 499214501Srpaulo qprintf("glob0:", patbuf); 500214501Srpaulo#endif 501214501Srpaulo 502214501Srpaulo if ((err = glob1(patbuf, pglob, limit)) != 0) 503214501Srpaulo return(err); 504214501Srpaulo 505252726Srpaulo /* 506252726Srpaulo * If there was no match we are going to append the pattern 507252726Srpaulo * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified 508252726Srpaulo * and the pattern did not contain any magic characters 509252726Srpaulo * GLOB_NOMAGIC is there just for compatibility with csh. 510252726Srpaulo */ 511252726Srpaulo if (pglob->gl_pathc == oldpathc) { 512252726Srpaulo if (((pglob->gl_flags & GLOB_NOCHECK) || 513252726Srpaulo ((pglob->gl_flags & GLOB_NOMAGIC) && 514252726Srpaulo !(pglob->gl_flags & GLOB_MAGCHAR)))) 515214501Srpaulo return (globextend(pattern, pglob, limit)); 516252726Srpaulo else 517252726Srpaulo return (GLOB_NOMATCH); 518252726Srpaulo } 519214501Srpaulo if (!(pglob->gl_flags & GLOB_NOSORT)) 520214501Srpaulo qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, 521214501Srpaulo pglob->gl_pathc - oldpathc, sizeof(char *), compare); 522214501Srpaulo return (0); 523214501Srpaulo} 524214501Srpaulo 525214501Srpaulostatic int 526214501Srpaulocompare(const void *p, const void *q) 527214501Srpaulo{ 528214501Srpaulo return (strcmp(*(char **)p, *(char **)q)); 529214501Srpaulo} 530214501Srpaulo 531214501Srpaulostatic int 532214501Srpauloglob1(Char *pattern, glob_t *pglob, size_t *limit) 533214501Srpaulo{ 534214501Srpaulo Char pathbuf[MAXPATHLEN]; 535214501Srpaulo 536214501Srpaulo /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ 537214501Srpaulo if (*pattern == EOS) 538214501Srpaulo return (0); 539214501Srpaulo return (glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1, 540214501Srpaulo pattern, pglob, limit)); 541214501Srpaulo} 542214501Srpaulo 543214501Srpaulo/* 544214501Srpaulo * The functions glob2 and glob3 are mutually recursive; there is one level 545252726Srpaulo * of recursion for each segment in the pattern that contains one or more 546214501Srpaulo * meta characters. 547214501Srpaulo */ 548214501Srpaulostatic int 549214501Srpauloglob2(Char *pathbuf, Char *pathend, Char *pathend_last, Char *pattern, 550214501Srpaulo glob_t *pglob, size_t *limit) 551214501Srpaulo{ 552214501Srpaulo struct stat sb; 553214501Srpaulo Char *p, *q; 554214501Srpaulo int anymeta; 555214501Srpaulo 556214501Srpaulo /* 557214501Srpaulo * Loop over pattern segments until end of pattern or until 558214501Srpaulo * segment with meta character found. 559214501Srpaulo */ 560252726Srpaulo for (anymeta = 0;;) { 561252726Srpaulo if (*pattern == EOS) { /* End of pattern? */ 562252726Srpaulo *pathend = EOS; 563252726Srpaulo if (g_lstat(pathbuf, &sb, pglob)) 564252726Srpaulo return (0); 565252726Srpaulo 566252726Srpaulo if (((pglob->gl_flags & GLOB_MARK) && 567252726Srpaulo pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) 568252726Srpaulo || (S_ISLNK(sb.st_mode) && 569252726Srpaulo (g_stat(pathbuf, &sb, pglob) == 0) && 570214501Srpaulo S_ISDIR(sb.st_mode)))) { 571214501Srpaulo if (pathend + 1 > pathend_last) 572214501Srpaulo return (GLOB_ABORTED); 573214501Srpaulo *pathend++ = SEP; 574214501Srpaulo *pathend = EOS; 575214501Srpaulo } 576214501Srpaulo ++pglob->gl_matchc; 577214501Srpaulo return (globextend(pathbuf, pglob, limit)); 578214501Srpaulo } 579214501Srpaulo 580214501Srpaulo /* Find end of next segment, copy tentatively to pathend. */ 581214501Srpaulo q = pathend; 582214501Srpaulo p = pattern; 583214501Srpaulo while (*p != EOS && *p != SEP) { 584214501Srpaulo if (ismeta(*p)) 585214501Srpaulo anymeta = 1; 586214501Srpaulo if (q + 1 > pathend_last) 587214501Srpaulo return (GLOB_ABORTED); 588214501Srpaulo *q++ = *p++; 589214501Srpaulo } 590214501Srpaulo 591214501Srpaulo if (!anymeta) { /* No expansion, do next segment. */ 592214501Srpaulo pathend = q; 593214501Srpaulo pattern = p; 594214501Srpaulo while (*pattern == SEP) { 595214501Srpaulo if (pathend + 1 > pathend_last) 596214501Srpaulo return (GLOB_ABORTED); 597214501Srpaulo *pathend++ = *pattern++; 598214501Srpaulo } 599214501Srpaulo } else /* Need expansion, recurse. */ 600214501Srpaulo return (glob3(pathbuf, pathend, pathend_last, pattern, 601214501Srpaulo p, pglob, limit)); 602214501Srpaulo } 603214501Srpaulo /* NOTREACHED */ 604214501Srpaulo} 605214501Srpaulo 606214501Srpaulostatic int 607214501Srpauloglob3(Char *pathbuf, Char *pathend, Char *pathend_last, 608214501Srpaulo Char *pattern, Char *restpattern, 609214501Srpaulo glob_t *pglob, size_t *limit) 610214501Srpaulo{ 611214501Srpaulo struct dirent *dp; 612214501Srpaulo DIR *dirp; 613214501Srpaulo int err; 614214501Srpaulo char buf[MAXPATHLEN]; 615214501Srpaulo 616214501Srpaulo /* 617214501Srpaulo * The readdirfunc declaration can't be prototyped, because it is 618214501Srpaulo * assigned, below, to two functions which are prototyped in glob.h 619214501Srpaulo * and dirent.h as taking pointers to differently typed opaque 620214501Srpaulo * structures. 621214501Srpaulo */ 622214501Srpaulo struct dirent *(*readdirfunc)(); 623214501Srpaulo 624214501Srpaulo if (pathend > pathend_last) 625214501Srpaulo return (GLOB_ABORTED); 626214501Srpaulo *pathend = EOS; 627214501Srpaulo errno = 0; 628214501Srpaulo 629214501Srpaulo if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { 630214501Srpaulo /* TODO: don't call for ENOENT or ENOTDIR? */ 631214501Srpaulo if (pglob->gl_errfunc) { 632214501Srpaulo if (g_Ctoc(pathbuf, buf, sizeof(buf))) 633214501Srpaulo return (GLOB_ABORTED); 634214501Srpaulo if (pglob->gl_errfunc(buf, errno) || 635214501Srpaulo pglob->gl_flags & GLOB_ERR) 636214501Srpaulo return (GLOB_ABORTED); 637214501Srpaulo } 638214501Srpaulo return (0); 639214501Srpaulo } 640214501Srpaulo 641214501Srpaulo err = 0; 642214501Srpaulo 643214501Srpaulo /* Search directory for matching names. */ 644214501Srpaulo if (pglob->gl_flags & GLOB_ALTDIRFUNC) 645214501Srpaulo readdirfunc = pglob->gl_readdir; 646214501Srpaulo else 647214501Srpaulo readdirfunc = readdir; 648214501Srpaulo while ((dp = (*readdirfunc)(dirp))) { 649214501Srpaulo char *sc; 650214501Srpaulo Char *dc; 651214501Srpaulo wchar_t wc; 652214501Srpaulo size_t clen; 653214501Srpaulo mbstate_t mbs; 654214501Srpaulo 655214501Srpaulo /* Initial DOT must be matched literally. */ 656214501Srpaulo if (dp->d_name[0] == DOT && *pattern != DOT) 657214501Srpaulo continue; 658214501Srpaulo memset(&mbs, 0, sizeof(mbs)); 659214501Srpaulo dc = pathend; 660214501Srpaulo sc = dp->d_name; 661214501Srpaulo while (dc < pathend_last) { 662214501Srpaulo clen = mbrtowc(&wc, sc, MB_LEN_MAX, &mbs); 663214501Srpaulo if (clen == (size_t)-1 || clen == (size_t)-2) { 664214501Srpaulo wc = *sc; 665214501Srpaulo clen = 1; 666214501Srpaulo memset(&mbs, 0, sizeof(mbs)); 667214501Srpaulo } 668214501Srpaulo if ((*dc++ = wc) == EOS) 669214501Srpaulo break; 670214501Srpaulo sc += clen; 671214501Srpaulo } 672214501Srpaulo if (!match(pathend, pattern, restpattern)) { 673214501Srpaulo *pathend = EOS; 674214501Srpaulo continue; 675214501Srpaulo } 676214501Srpaulo err = glob2(pathbuf, --dc, pathend_last, restpattern, 677214501Srpaulo pglob, limit); 678214501Srpaulo if (err) 679214501Srpaulo break; 680214501Srpaulo } 681214501Srpaulo 682214501Srpaulo if (pglob->gl_flags & GLOB_ALTDIRFUNC) 683214501Srpaulo (*pglob->gl_closedir)(dirp); 684214501Srpaulo else 685214501Srpaulo closedir(dirp); 686214501Srpaulo return (err); 687214501Srpaulo} 688214501Srpaulo 689214501Srpaulo 690214501Srpaulo/* 691214501Srpaulo * Extend the gl_pathv member of a glob_t structure to accomodate a new item, 692214501Srpaulo * add the new item, and update gl_pathc. 693214501Srpaulo * 694214501Srpaulo * This assumes the BSD realloc, which only copies the block when its size 695214501Srpaulo * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic 696214501Srpaulo * behavior. 697214501Srpaulo * 698214501Srpaulo * Return 0 if new item added, error code if memory couldn't be allocated. 699214501Srpaulo * 700214501Srpaulo * Invariant of the glob_t structure: 701214501Srpaulo * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and 702214501Srpaulo * gl_pathv points to (gl_offs + gl_pathc + 1) items. 703214501Srpaulo */ 704214501Srpaulostatic int 705214501Srpauloglobextend(const Char *path, glob_t *pglob, size_t *limit) 706214501Srpaulo{ 707214501Srpaulo char **pathv; 708214501Srpaulo size_t i, newsize, len; 709252726Srpaulo char *copy; 710252726Srpaulo const Char *p; 711252726Srpaulo 712252726Srpaulo if (*limit && pglob->gl_pathc > *limit) { 713252726Srpaulo errno = 0; 714252726Srpaulo return (GLOB_NOSPACE); 715214501Srpaulo } 716214501Srpaulo 717214501Srpaulo newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); 718214501Srpaulo pathv = pglob->gl_pathv ? 719214501Srpaulo realloc((char *)pglob->gl_pathv, newsize) : 720214501Srpaulo malloc(newsize); 721214501Srpaulo if (pathv == NULL) { 722214501Srpaulo if (pglob->gl_pathv) { 723214501Srpaulo free(pglob->gl_pathv); 724214501Srpaulo pglob->gl_pathv = NULL; 725214501Srpaulo } 726214501Srpaulo return (GLOB_NOSPACE); 727214501Srpaulo } 728214501Srpaulo 729214501Srpaulo if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { 730214501Srpaulo /* first time around -- clear initial gl_offs items */ 731214501Srpaulo pathv += pglob->gl_offs; 732214501Srpaulo for (i = pglob->gl_offs + 1; --i > 0; ) 733214501Srpaulo *--pathv = NULL; 734214501Srpaulo } 735214501Srpaulo pglob->gl_pathv = pathv; 736214501Srpaulo 737214501Srpaulo for (p = path; *p++;) 738214501Srpaulo continue; 739214501Srpaulo len = MB_CUR_MAX * (size_t)(p - path); /* XXX overallocation */ 740214501Srpaulo if ((copy = malloc(len)) != NULL) { 741214501Srpaulo if (g_Ctoc(path, copy, len)) { 742214501Srpaulo free(copy); 743214501Srpaulo return (GLOB_NOSPACE); 744214501Srpaulo } 745214501Srpaulo pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; 746214501Srpaulo } 747214501Srpaulo pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; 748214501Srpaulo return (copy == NULL ? GLOB_NOSPACE : 0); 749214501Srpaulo} 750214501Srpaulo 751214501Srpaulo/* 752214501Srpaulo * pattern matching function for filenames. Each occurrence of the * 753214501Srpaulo * pattern causes a recursion level. 754214501Srpaulo */ 755214501Srpaulostatic int 756214501Srpaulomatch(Char *name, Char *pat, Char *patend) 757214501Srpaulo{ 758214501Srpaulo int ok, negate_range; 759214501Srpaulo Char c, k; 760214501Srpaulo struct xlocale_collate *table = 761214501Srpaulo (struct xlocale_collate*)__get_locale()->components[XLC_COLLATE]; 762214501Srpaulo 763214501Srpaulo while (pat < patend) { 764214501Srpaulo c = *pat++; 765214501Srpaulo switch (c & M_MASK) { 766214501Srpaulo case M_ALL: 767214501Srpaulo if (pat == patend) 768214501Srpaulo return (1); 769214501Srpaulo do 770252726Srpaulo if (match(name, pat, patend)) 771252726Srpaulo return (1); 772252726Srpaulo while (*name++ != EOS); 773252726Srpaulo return (0); 774214501Srpaulo case M_ONE: 775214501Srpaulo if (*name++ == EOS) 776214501Srpaulo return (0); 777214501Srpaulo break; 778214501Srpaulo case M_SET: 779214501Srpaulo ok = 0; 780214501Srpaulo if ((k = *name++) == EOS) 781214501Srpaulo return (0); 782214501Srpaulo if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS) 783214501Srpaulo ++pat; 784214501Srpaulo while (((c = *pat++) & M_MASK) != M_END) 785214501Srpaulo if ((*pat & M_MASK) == M_RNG) { 786214501Srpaulo if (table->__collate_load_error ? 787214501Srpaulo CHAR(c) <= CHAR(k) && CHAR(k) <= CHAR(pat[1]) : 788214501Srpaulo __collate_range_cmp(table, CHAR(c), CHAR(k)) <= 0 789252726Srpaulo && __collate_range_cmp(table, CHAR(k), CHAR(pat[1])) <= 0 790214501Srpaulo ) 791214501Srpaulo ok = 1; 792214501Srpaulo pat += 2; 793214501Srpaulo } else if (c == k) 794214501Srpaulo ok = 1; 795214501Srpaulo if (ok == negate_range) 796214501Srpaulo return (0); 797214501Srpaulo break; 798214501Srpaulo default: 799214501Srpaulo if (*name++ != c) 800214501Srpaulo return (0); 801214501Srpaulo break; 802214501Srpaulo } 803214501Srpaulo } 804214501Srpaulo return (*name == EOS); 805214501Srpaulo} 806214501Srpaulo 807214501Srpaulo/* Free allocated data belonging to a glob_t structure. */ 808214501Srpaulovoid 809214501Srpauloglobfree(glob_t *pglob) 810214501Srpaulo{ 811214501Srpaulo size_t i; 812214501Srpaulo char **pp; 813214501Srpaulo 814214501Srpaulo if (pglob->gl_pathv != NULL) { 815214501Srpaulo pp = pglob->gl_pathv + pglob->gl_offs; 816214501Srpaulo for (i = pglob->gl_pathc; i--; ++pp) 817214501Srpaulo if (*pp) 818214501Srpaulo free(*pp); 819252726Srpaulo free(pglob->gl_pathv); 820214501Srpaulo pglob->gl_pathv = NULL; 821214501Srpaulo } 822214501Srpaulo} 823214501Srpaulo 824214501Srpaulostatic DIR * 825214501Srpaulog_opendir(Char *str, glob_t *pglob) 826214501Srpaulo{ 827214501Srpaulo char buf[MAXPATHLEN]; 828214501Srpaulo 829214501Srpaulo if (!*str) 830214501Srpaulo strcpy(buf, "."); 831214501Srpaulo else { 832214501Srpaulo if (g_Ctoc(str, buf, sizeof(buf))) 833214501Srpaulo return (NULL); 834214501Srpaulo } 835214501Srpaulo 836214501Srpaulo if (pglob->gl_flags & GLOB_ALTDIRFUNC) 837214501Srpaulo return ((*pglob->gl_opendir)(buf)); 838214501Srpaulo 839214501Srpaulo return (opendir(buf)); 840214501Srpaulo} 841214501Srpaulo 842214501Srpaulostatic int 843214501Srpaulog_lstat(Char *fn, struct stat *sb, glob_t *pglob) 844214501Srpaulo{ 845214501Srpaulo char buf[MAXPATHLEN]; 846214501Srpaulo 847214501Srpaulo if (g_Ctoc(fn, buf, sizeof(buf))) { 848214501Srpaulo errno = ENAMETOOLONG; 849214501Srpaulo return (-1); 850214501Srpaulo } 851214501Srpaulo if (pglob->gl_flags & GLOB_ALTDIRFUNC) 852214501Srpaulo return((*pglob->gl_lstat)(buf, sb)); 853214501Srpaulo return (lstat(buf, sb)); 854214501Srpaulo} 855214501Srpaulo 856214501Srpaulostatic int 857214501Srpaulog_stat(Char *fn, struct stat *sb, glob_t *pglob) 858214501Srpaulo{ 859214501Srpaulo char buf[MAXPATHLEN]; 860214501Srpaulo 861214501Srpaulo if (g_Ctoc(fn, buf, sizeof(buf))) { 862214501Srpaulo errno = ENAMETOOLONG; 863214501Srpaulo return (-1); 864214501Srpaulo } 865214501Srpaulo if (pglob->gl_flags & GLOB_ALTDIRFUNC) 866214501Srpaulo return ((*pglob->gl_stat)(buf, sb)); 867214501Srpaulo return (stat(buf, sb)); 868214501Srpaulo} 869214501Srpaulo 870214501Srpaulostatic const Char * 871214501Srpaulog_strchr(const Char *str, wchar_t ch) 872214501Srpaulo{ 873214501Srpaulo 874214501Srpaulo do { 875214501Srpaulo if (*str == ch) 876214501Srpaulo return (str); 877214501Srpaulo } while (*str++); 878214501Srpaulo return (NULL); 879214501Srpaulo} 880214501Srpaulo 881214501Srpaulostatic int 882214501Srpaulog_Ctoc(const Char *str, char *buf, size_t len) 883214501Srpaulo{ 884214501Srpaulo mbstate_t mbs; 885214501Srpaulo size_t clen; 886214501Srpaulo 887214501Srpaulo memset(&mbs, 0, sizeof(mbs)); 888214501Srpaulo while (len >= MB_CUR_MAX) { 889214501Srpaulo clen = wcrtomb(buf, *str, &mbs); 890214501Srpaulo if (clen == (size_t)-1) 891214501Srpaulo return (1); 892214501Srpaulo if (*str == L'\0') 893252726Srpaulo return (0); 894214501Srpaulo str++; 895214501Srpaulo buf += clen; 896214501Srpaulo len -= clen; 897214501Srpaulo } 898214501Srpaulo return (1); 899214501Srpaulo} 900214501Srpaulo 901214501Srpaulo#ifdef DEBUG 902214501Srpaulostatic void 903214501Srpauloqprintf(const char *str, Char *s) 904214501Srpaulo{ 905214501Srpaulo Char *p; 906214501Srpaulo 907214501Srpaulo (void)printf("%s:\n", str); 908214501Srpaulo for (p = s; *p; p++) 909214501Srpaulo (void)printf("%c", CHAR(*p)); 910214501Srpaulo (void)printf("\n"); 911214501Srpaulo for (p = s; *p; p++) 912214501Srpaulo (void)printf("%c", *p & M_PROTECT ? '"' : ' '); 913214501Srpaulo (void)printf("\n"); 914214501Srpaulo for (p = s; *p; p++) 915214501Srpaulo (void)printf("%c", ismeta(*p) ? '_' : ' '); 916214501Srpaulo (void)printf("\n"); 917214501Srpaulo} 918214501Srpaulo#endif 919214501Srpaulo