/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* C-shell glob for random programs.
*/
#include "ftp_var.h"
#ifndef NCARGS
#define NCARGS 5120
#endif
#define QUOTE 0200
#define TRIM 0177
#define eq(a, b) (strcmp(a, b) == 0)
/*
* According to the person who wrote the C shell "glob" code, a reasonable
* limit on number of arguments would seem to be the maximum number of
* characters in an arg list / 6.
*
* XXX: With the new VM system, NCARGS has become enormous, making
* it impractical to allocate arrays with NCARGS / 6 entries on
* the stack. The proper fix is to revamp code elsewhere (in
* sh.dol.c and sh.glob.c) to use a different technique for handling
* command line arguments. In the meantime, we simply fall back
* on using the old value of NCARGS.
*/
#ifdef notyet
#define GAVSIZ (NCARGS / 6)
#else /* notyet */
#define GAVSIZ (10240 / 6)
#endif /* notyet */
static char **gargv; /* Pointer to the (stack) arglist */
static char **agargv;
static int agargv_size;
static long gargc; /* Number args in gargv */
static short gflag;
static char *strspl();
static char *strend(char *cp);
static char *strspl(char *cp, char *dp);
static int tglob(char c);
static char **copyblk(char **v);
static void ginit(char **agargv);
static void addpath(char c);
static int any(int c, char *s);
static void Gcat(char *s1, char *s2);
static void collect(char *as);
static void acollect(char *as);
static void sort(void);
static void expand(char *as);
static void matchdir(char *pattern);
static int execbrc(char *p, char *s);
static int ftp_fnmatch(wchar_t t_ch, wchar_t t_fch, wchar_t t_lch);
static int gethdir(char *home);
static void xfree(char *cp);
static void rscan(char **t, int (*f)(char));
static int letter(char c);
static int digit(char c);
static int match(char *s, char *p);
static int amatch(char *s, char *p);
static int blklen(char **av);
static char **blkcpy(char **oav, char **bv);
static int globcnt;
static char *globchars = "`{[*?";
static char *gpath, *gpathp, *lastgpathp;
static int globbed;
static char *entp;
static char **sortbas;
char **
glob(char *v)
{
char agpath[FTPBUFSIZ];
char *vv[2];
if (agargv == NULL) {
agargv = (char **)malloc(GAVSIZ * sizeof (char *));
agargv_size = GAVSIZ;
if (agargv == NULL) {
globerr = "Arguments too long.";
return (0);
}
}
vv[0] = v;
vv[1] = 0;
globerr = 0;
gflag = 0;
rscan(vv, tglob);
if (gflag == 0)
return (copyblk(vv));
gpath = agpath;
gpathp = gpath;
*gpathp = 0;
lastgpathp = &gpath[sizeof (agpath) - 2];
ginit(agargv);
globcnt = 0;
collect(v);
if (globcnt == 0 && (gflag&1)) {
blkfree(gargv);
if (gargv == agargv)
agargv = 0;
gargv = 0;
return (0);
} else
return (gargv = copyblk(gargv));
}
static void
ginit(char **agargv)
{
agargv[0] = 0;
gargv = agargv;
sortbas = agargv;
gargc = 0;
}
static void
collect(char *as)
{
if (eq(as, "{") || eq(as, "{}")) {
Gcat(as, "");
sort();
} else
acollect(as);
}
static void
acollect(char *as)
{
register long ogargc = gargc;
gpathp = gpath; *gpathp = 0; globbed = 0;
expand(as);
if (gargc != ogargc)
sort();
}
static void
sort(void)
{
register char **p1, **p2, *c;
char **Gvp = &gargv[gargc];
p1 = sortbas;
while (p1 < Gvp-1) {
p2 = p1;
while (++p2 < Gvp)
if (strcmp(*p1, *p2) > 0)
c = *p1, *p1 = *p2, *p2 = c;
p1++;
}
sortbas = Gvp;
}
static void
expand(char *as)
{
register char *cs;
register char *sgpathp, *oldcs;
struct stat stb;
sgpathp = gpathp;
cs = as;
if (*cs == '~' && gpathp == gpath) {
addpath('~');
cs++;
while (letter(*cs) || digit(*cs) || *cs == '-')
addpath(*cs++);
if (!*cs || *cs == '/') {
if (gpathp != gpath + 1) {
*gpathp = 0;
if (gethdir(gpath + 1))
globerr = "Unknown user name after ~";
(void) strcpy(gpath, gpath + 1);
} else
(void) strcpy(gpath, home);
gpathp = strend(gpath);
}
}
while (!any(*cs, globchars)) {
if (*cs == 0) {
if (!globbed)
Gcat(gpath, "");
else if (stat(gpath, &stb) >= 0) {
Gcat(gpath, "");
globcnt++;
}
goto endit;
}
addpath(*cs++);
}
oldcs = cs;
while (cs > as && *cs != '/')
cs--, gpathp--;
if (*cs == '/')
cs++, gpathp++;
*gpathp = 0;
if (*oldcs == '{') {
(void) execbrc(cs, ((char *)0));
return;
}
matchdir(cs);
endit:
gpathp = sgpathp;
*gpathp = 0;
}
static void
matchdir(char *pattern)
{
struct stat stb;
register struct dirent *dp;
DIR *dirp;
/*
* BSD/SunOS open() system call maps a null pathname into
* "." while System V does not.
*/
if (*gpath == (char)0) {
dirp = opendir(".");
} else
dirp = opendir(gpath);
if (dirp == NULL) {
if (globbed)
return;
goto patherr2;
}
if (fstat(dirp->dd_fd, &stb) < 0)
goto patherr1;
if (!S_ISDIR(stb.st_mode)) {
errno = ENOTDIR;
goto patherr1;
}
while ((dp = readdir(dirp)) != NULL) {
if (dp->d_ino == 0)
continue;
if (match(dp->d_name, pattern)) {
Gcat(gpath, dp->d_name);
globcnt++;
}
}
closedir(dirp);
return;
patherr1:
closedir(dirp);
patherr2:
globerr = "Bad directory components";
}
static int
execbrc(char *p, char *s)
{
char restbuf[FTPBUFSIZ + 2];
register char *pe, *pm, *pl;
int brclev = 0;
char *lm, savec, *sgpathp;
int len;
for (lm = restbuf; *p != '{'; *lm += len, p += len) {
if ((len = mblen(p, MB_CUR_MAX)) <= 0)
len = 1;
memcpy(lm, p, len);
}
for (pe = ++p; *pe; pe += len) {
if ((len = mblen(pe, MB_CUR_MAX)) <= 0)
len = 1;
switch (*pe) {
case '{':
brclev++;
continue;
case '}':
if (brclev == 0)
goto pend;
brclev--;
continue;
case '[':
for (pe++; *pe && *pe != ']'; pe += len) {
if ((len = mblen(pe, MB_CUR_MAX)) <= 0)
len = 1;
}
len = 1;
continue;
}
}
pend:
brclev = 0;
for (pl = pm = p; pm <= pe; pm += len) {
if ((len = mblen(pm, MB_CUR_MAX)) <= 0)
len = 1;
switch (*pm & (QUOTE|TRIM)) {
case '{':
brclev++;
continue;
case '}':
if (brclev) {
brclev--;
continue;
}
goto doit;
case ','|QUOTE:
case ',':
if (brclev)
continue;
doit:
savec = *pm;
*pm = 0;
(void) strcpy(lm, pl);
(void) strcat(restbuf, pe + 1);
*pm = savec;
if (s == 0) {
sgpathp = gpathp;
expand(restbuf);
gpathp = sgpathp;
*gpathp = 0;
} else if (amatch(s, restbuf))
return (1);
sort();
pl = pm + 1;
if (brclev)
return (0);
continue;
case '[':
for (pm++; *pm && *pm != ']'; pm += len) {
if ((len = mblen(pm, MB_CUR_MAX)) <= 0)
len = 1;
}
len = 1;
if (!*pm)
pm--;
continue;
}
}
if (brclev)
goto doit;
return (0);
}
static int
match(char *s, char *p)
{
register int c;
register char *sentp;
char sglobbed = globbed;
if (*s == '.' && *p != '.')
return (0);
sentp = entp;
entp = s;
c = amatch(s, p);
entp = sentp;
globbed = sglobbed;
return (c);
}
static int
amatch(char *s, char *p)
{
wchar_t scc;
int ok;
wchar_t lc1, lc2;
char *sgpathp;
struct stat stb;
wchar_t c, cc;
int len_s, len_p;
globbed = 1;
for (;;) {
if ((len_s = mbtowc(&scc, s, MB_CUR_MAX)) <= 0) {
scc = (unsigned char)*s;
len_s = 1;
}
/* scc = *s++ & TRIM; */
s += len_s;
if ((len_p = mbtowc(&c, p, MB_CUR_MAX)) <= 0) {
c = (unsigned char)*p;
len_p = 1;
}
p += len_p;
switch (c) {
case '{':
return (execbrc(p - len_p, s - len_s));
case '[':
ok = 0;
lc1 = 0;
while ((cc = *p) != '\0') {
if ((len_p = mbtowc(&cc, p, MB_CUR_MAX)) <= 0) {
cc = (unsigned char)*p;
len_p = 1;
}
p += len_p;
if (cc == ']') {
if (ok)
break;
return (0);
}
if (cc == '-') {
if ((len_p = mbtowc(&lc2, p,
MB_CUR_MAX)) <= 0) {
lc2 = (unsigned char)*p;
len_p = 1;
}
p += len_p;
if (ftp_fnmatch(scc, lc1, lc2))
ok++;
} else
if (scc == (lc1 = cc))
ok++;
}
if (cc == 0)
if (!ok)
return (0);
continue;
case '*':
if (!*p)
return (1);
if (*p == '/') {
p++;
goto slash;
}
s -= len_s;
do {
if (amatch(s, p))
return (1);
} while (*s++);
return (0);
case 0:
return (scc == 0);
default:
if (c != scc)
return (0);
continue;
case '?':
if (scc == 0)
return (0);
continue;
case '/':
if (scc)
return (0);
slash:
s = entp;
sgpathp = gpathp;
while (*s)
addpath(*s++);
addpath('/');
if (stat(gpath, &stb) == 0 && S_ISDIR(stb.st_mode))
if (*p == 0) {
Gcat(gpath, "");
globcnt++;
} else
expand(p);
gpathp = sgpathp;
*gpathp = 0;
return (0);
}
}
}
#ifdef notdef
static
Gmatch(s, p)
register char *s, *p;
{
register int scc;
int ok, lc;
int c, cc;
for (;;) {
scc = *s++ & TRIM;
switch (c = *p++) {
case '[':
ok = 0;
lc = 077777;
while (cc = *p++) {
if (cc == ']') {
if (ok)
break;
return (0);
}
if (cc == '-') {
if (lc <= scc && scc <= *p++)
ok++;
} else
if (scc == (lc = cc))
ok++;
}
if (cc == 0)
if (ok)
p--;
else
return (0);
continue;
case '*':
if (!*p)
return (1);
for (s--; *s; s++)
if (Gmatch(s, p))
return (1);
return (0);
case 0:
return (scc == 0);
default:
if ((c & TRIM) != scc)
return (0);
continue;
case '?':
if (scc == 0)
return (0);
continue;
}
}
}
#endif
static void
Gcat(char *s1, char *s2)
{
if (gargc >= agargv_size - 1) {
char **tmp;
if (globerr) {
return;
}
tmp = (char **)realloc(agargv,
(agargv_size + GAVSIZ) * sizeof (char *));
if (tmp == NULL) {
globerr = "Arguments too long";
return;
} else {
agargv = tmp;
agargv_size += GAVSIZ;
}
gargv = agargv;
sortbas = agargv;
}
gargc++;
gargv[gargc] = 0;
gargv[gargc - 1] = strspl(s1, s2);
}
static void
addpath(char c)
{
if (gpathp >= lastgpathp)
globerr = "Pathname too long";
else {
*gpathp++ = c;
*gpathp = 0;
}
}
static void
rscan(char **t, int (*f)(char))
{
register char *p, c;
int len;
while (p = *t++) {
if (f == tglob)
if (*p == '~')
gflag |= 2;
else if (eq(p, "{") || eq(p, "{}"))
continue;
while ((c = *p) != '\0') {
(void) (*f)(c);
if ((len = mblen(p, MB_CUR_MAX)) <= 0)
len = 1;
p += len;
}
}
}
static int
tglob(char c)
{
if (any(c, globchars))
gflag |= c == '{' ? 2 : 1;
return (c);
}
static int
letter(char c)
{
return (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '_');
}
static int
digit(char c)
{
return (c >= '0' && c <= '9');
}
static int
any(int c, char *s)
{
int len;
while (*s) {
if (*s == c)
return (1);
if ((len = mblen(s, MB_CUR_MAX)) <= 0)
len = 1;
s += len;
}
return (0);
}
static int
blklen(char **av)
{
register int i = 0;
while (*av++)
i++;
return (i);
}
static char **
blkcpy(char **oav, char **bv)
{
register char **av = oav;
while (*av++ = *bv++)
continue;
return (oav);
}
void
blkfree(char **av0)
{
register char **av = av0;
while (*av)
xfree(*av++);
free(av0);
}
static void
xfree(char *cp)
{
extern char end[];
if (cp >= end && cp < (char *)&cp)
free(cp);
}
static char *
strspl(char *cp, char *dp)
{
register char *ep = malloc((unsigned)(strlen(cp) + strlen(dp) + 1));
if (ep == (char *)0)
fatal("Out of memory");
(void) strcpy(ep, cp);
(void) strcat(ep, dp);
return (ep);
}
static char **
copyblk(char **v)
{
register char **nv = (char **)malloc((unsigned)((blklen(v) + 1) *
sizeof (char **)));
if (nv == (char **)0)
fatal("Out of memory");
return (blkcpy(nv, v));
}
static char *
strend(char *cp)
{
while (*cp)
cp++;
return (cp);
}
/*
* Extract a home directory from the password file
* The argument points to a buffer where the name of the
* user whose home directory is sought is currently.
* We write the home directory of the user back there.
*/
static int
gethdir(char *home)
{
register struct passwd *pp = getpwnam(home);
if (!pp || home + strlen(pp->pw_dir) >= lastgpathp)
return (1);
(void) strcpy(home, pp->pw_dir);
return (0);
}
static int
ftp_fnmatch(wchar_t t_ch, wchar_t t_fch, wchar_t t_lch)
{
char t_char[MB_LEN_MAX + 1];
char t_patan[MB_LEN_MAX * 2 + 8];
char *p;
int i;
if ((t_ch == t_fch) || (t_ch == t_lch))
return (1);
p = t_patan;
if ((i = wctomb(t_char, (wchar_t)t_ch)) <= 0)
return (0);
t_char[i] = 0;
*p++ = '[';
if ((i = wctomb(p, (wchar_t)t_fch)) <= 0)
return (0);
p += i;
*p++ = '-';
if ((i = wctomb(p, (wchar_t)t_lch)) <= 0)
return (0);
p += i;
*p++ = ']';
*p = 0;
if (fnmatch(t_patan, t_char, FNM_NOESCAPE))
return (0);
return (1);
}