sco.c

wu-ftpd类unix下的ftp服务器,可用于嵌入式系统

	LogMask = pmask;
    return (omask);
}

#endif /* defined(SYSLOGFILE) */

/* Need own getcwd() because of the way getcwd is implemented in SCO UNIX */

/*
 * Copyright (c) 1989, 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by the University of
 *  California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getcwd.c    5.11 (Berkeley) 2/24/91";
#endif /* LIBC_SCCS and not lint */

#include <sys/param.h>

#ifndef HAVE_LSTAT
#define lstat stat
#endif

#include <sys/stat.h>
#include <errno.h>
#include <dirent.h>
#include <stdio.h>
#include <string.h>

#ifdef HAVE_D_NAMLEN
#define DNAMLEN(dp) (dp->d_namlen)
#else
#define DNAMLEN(dp) (strlen(dp->d_name))
#endif

#define ISDOT(dp) \
    (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
        dp->d_name[1] == '.' && dp->d_name[2] == '\0'))

char *
     getcwd(pt, size)
     char *pt;
     int size;
{
    register struct dirent *dp;
    register DIR *dir;
    register dev_t dev;
    register ino_t ino;
    register int first;
    register char *bpt, *bup;
    struct stat s;
    dev_t root_dev;
    ino_t root_ino;
    size_t ptsize, upsize;
    int save_errno;
    char *ept, *eup, *up, *ptr;

    /*
     * If no buffer specified by the user, allocate one as necessary.
     * If a buffer is specified, the size has to be non-zero.  The path
     * is built from the end of the buffer backwards.
     */
    if (pt) {
	ptsize = 0;
	if (!size) {
	    errno = EINVAL;
	    return ((char *) NULL);
	}
	ept = pt + size;
    }
    else {
	if (!(pt = (char *) malloc(ptsize = 1024 - 4)))
	    return ((char *) NULL);
	ept = pt + ptsize;
    }
    bpt = ept - 1;
    *bpt = '\0';

    /*
     * Allocate bytes (1024 - malloc space) for the string of "../"'s.
     * Should always be enough (it's 340 levels).  If it's not, allocate
     * as necessary.  Special * case the first stat, it's ".", not "..".
     */
    if (!(up = (char *) malloc(upsize = 1024 - 4)))
	goto err;
    eup = up + MAXPATHLEN;
    bup = up;
    up[0] = '.';
    up[1] = '\0';

    /* Save root values, so know when to stop. */
    if (stat("/", &s))
	goto err;
    root_dev = s.st_dev;
    root_ino = s.st_ino;

    errno = 0;			/* XXX readdir has no error return. */

    for (first = 1;; first = 0) {
	/* Stat the current level. */
	if (lstat(up, &s))
	    goto err;

	/* Save current node values. */
	ino = s.st_ino;
	dev = s.st_dev;

	/* Check for reaching root. */
	if (root_dev == dev && root_ino == ino) {
	    *--bpt = '/';
	    /*
	     * It's unclear that it's a requirement to copy the
	     * path to the beginning of the buffer, but it's always
	     * been that way and stuff would probably break.
	     */
	    (void) bcopy(bpt, pt, ept - bpt);
	    free(up);
	    return (pt);
	}

	/*
	 * Build pointer to the parent directory, allocating memory
	 * as necessary.  Max length is 3 for "../", the largest
	 * possible component name, plus a trailing NULL.
	 */
	if (bup + 3 + MAXNAMLEN + 1 >= eup) {
	    off_t len = bup - up;
	    if (!(ptr = (char *) realloc(up, upsize *= 2)))
		goto err;
	    up = ptr;
	    bup = up + len;
	    eup = up + upsize;
	}
	*bup++ = '.';
	*bup++ = '.';
	*bup = '\0';

	/* Open and stat parent directory. */
	if (!(dir = opendir(up)) || fstat(dir->dd_fd, &s))
	    goto err;

	/* Add trailing slash for next directory. */
	*bup++ = '/';

	/*
	 * If it's a mount point, have to stat each element because
	 * the inode number in the directory is for the entry in the
	 * parent directory, not the inode number of the mounted file.
	 */
	save_errno = 0;
	if (s.st_dev == dev) {
	    for (;;) {
		if (!(dp = readdir(dir)))
		    goto notfound;
		if (dp->d_fileno == ino)
		    break;
	    }
	}
	else
	    for (;;) {
		if (!(dp = readdir(dir)))
		    goto notfound;
		if (ISDOT(dp))
		    continue;
		bcopy(dp->d_name, bup, DNAMLEN(dp) + 1);

		/* Save the first error for later. */
		if (lstat(up, &s)) {
		    if (!save_errno)
			save_errno = errno;
		    errno = 0;
		    continue;
		}
		if (s.st_dev == dev && s.st_ino == ino)
		    break;
	    }

	/*
	 * Check for length of the current name, preceding slash,
	 * leading slash.
	 */
	if (bpt - pt <= DNAMLEN(dp) + (first ? 1 : 2)) {
	    size_t len, off;

	    if (!ptsize) {
		errno = ERANGE;
		goto err;
	    }
	    off = bpt - pt;
	    len = ept - bpt;
	    if (!(ptr = (char *) realloc(pt, ptsize *= 2)))
		goto err;
	    pt = ptr;
	    bpt = pt + off;
	    ept = pt + ptsize;
	    (void) bcopy(bpt, ept - len, len);
	    bpt = ept - len;
	}
	if (!first)
	    *--bpt = '/';
	bpt -= DNAMLEN(dp);
	bcopy(dp->d_name, bpt, DNAMLEN(dp));
	(void) closedir(dir);

	/* Truncate any file name. */
	*bup = '\0';
    }

  notfound:
    /*
     * If readdir set errno, use it, not any saved error; otherwise,
     * didn't find the current directory in its parent directory, set
     * errno to ENOENT.
     */
    if (!errno)
	errno = save_errno ? save_errno : ENOENT;
    /* FALLTHROUGH */
  err:
    if (ptsize && !pt)
	free(pt);
    if (!up)
	free(up);
    return ((char *) NULL);
}

char *
     getwd(b)
     char *b;
{
    char *p;
    uid_t euid = geteuid();
    seteuid(0);
    getcwd(b, MAXPATHLEN);
    p = getcwd(b, MAXPATHLEN);
    seteuid(euid);
    return (p);
}

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by the University of
 *  California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if !defined(lint)
static char sccsid[] = "@(#)initgroups.c    5.6 (Berkeley) 6/1/90";
static char rcsid[] = "@(#)$Id: sco.c,v 1.7 2000/07/01 18:36:29 wuftpd Exp $";
#endif /* !lint */

#include <stdio.h>

#include <grp.h>
#ifndef NGROUPS
#ifdef NGROUPS_MAX
#define NGROUPS  NGROUPS_MAX
#else /* !NGROUPS_MAX */
#define NGROUPS  8
#endif /* NGROUPS_MAX */
#endif /* !NGROUPS */

struct group *getgrent();

initgroups(uname, agroup)
     char *uname;
     int agroup;
{
    int groups[NGROUPS], ngroups = 0;
    register struct group *grp;
    register int i;

    /*
     * If installing primary group, duplicate it;
     * the first element of groups is the effective gid
     * and will be overwritten when a setgid file is executed.
     */
    if (agroup >= 0) {
	groups[ngroups++] = agroup;
	groups[ngroups++] = agroup;
    }
    setgrent();
    while (grp = getgrent()) {
	if (grp->gr_gid == agroup)
	    continue;
	for (i = 0; grp->gr_mem[i]; i++)
	    if (!strcmp(grp->gr_mem[i], uname)) {
		if (ngroups == NGROUPS) {
		    fprintf(stderr, "initgroups: %s is in too many groups\n", uname);
		    goto toomany;
		}
		groups[ngroups++] = grp->gr_gid;
	    }
    }
  toomany:
    endgrent();
    if (setgroups(ngroups, groups) < 0) {
	perror("setgroups");
	return (-1);
    }
    return (0);
}
#else
/* this will keep the preprocessor quiet */
int SCOdummy()
{
    return (0);
}
#endif /* _SCO_DS */