/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.0 (the 'License'). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License." * * @APPLE_LICENSE_HEADER_END@ */ /*- * Copyright (c) 1992, 1993 * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "extern.h" char * colon(cp) char *cp; { if (*cp == ':') /* Leading colon is part of file name. */ return (0); for (; *cp; ++cp) { if (*cp == ':') return (cp); if (*cp == '/') return (0); } return (0); } void verifydir(cp) char *cp; { struct stat stb; if (!stat(cp, &stb)) { if (S_ISDIR(stb.st_mode)) return; errno = ENOTDIR; } run_err("%s: %s", cp, strerror(errno)); exit(1); } int okname(cp0) char *cp0; { int c; char *cp; cp = cp0; do { c = *cp; if (c & 0200) goto bad; if (!isalpha(c) && !isdigit(c) && c != '_' && c != '-') goto bad; } while (*++cp); return (1); bad: warnx("%s: invalid user name", cp0); return (0); } int susystem(s, userid) int userid; char *s; { sig_t istat, qstat; int status, w; pid_t pid; pid = vfork(); switch (pid) { case -1: return (127); case 0: (void)setuid(userid); execl(_PATH_BSHELL, "sh", "-c", s, NULL); _exit(127); } istat = signal(SIGINT, SIG_IGN); qstat = signal(SIGQUIT, SIG_IGN); if (waitpid(pid, &status, 0) < 0) status = -1; (void)signal(SIGINT, istat); (void)signal(SIGQUIT, qstat); return (status); } BUF * allocbuf(bp, fd, blksize) BUF *bp; int fd, blksize; { struct stat stb; size_t size; if (fstat(fd, &stb) < 0) { run_err("fstat: %s", strerror(errno)); return (0); } size = roundup(stb.st_blksize, blksize); if (size == 0) size = blksize; if (bp->cnt >= size) return (bp); if ((bp->buf = realloc(bp->buf, size)) == NULL) { bp->cnt = 0; run_err("%s", strerror(errno)); return (0); } bp->cnt = size; return (bp); } void lostconn(signo) int signo; { if (!iamremote) warnx("lost connection"); exit(1); }