From 2b3e9d9b244e279ef5693a7cf5dacc7903164af5 Mon Sep 17 00:00:00 2001 From: Ralf Corsepius Date: Mon, 22 Jul 2002 09:46:48 +0000 Subject: Remove, moved to cpukit. --- c/src/exec/libnetworking/libc/rcmd.c | 544 ----------------------------------- 1 file changed, 544 deletions(-) delete mode 100644 c/src/exec/libnetworking/libc/rcmd.c (limited to 'c/src/exec/libnetworking/libc/rcmd.c') diff --git a/c/src/exec/libnetworking/libc/rcmd.c b/c/src/exec/libnetworking/libc/rcmd.c deleted file mode 100644 index 8dd4d0cbe2..0000000000 --- a/c/src/exec/libnetworking/libc/rcmd.c +++ /dev/null @@ -1,544 +0,0 @@ -/* - * Copyright (c) 1983, 1993, 1994 - * 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. - * - * $Id$ - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)rcmd.c 8.3 (Berkeley) 3/26/94"; -#endif /* LIBC_SCCS and not lint */ - -#include -#include -#include - -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef YP -#include -#include -#include -#endif - - -#define max(a, b) ((a > b) ? a : b) - -#ifdef __rtems__ -int rresvport(); -#define bzero(a,s) memset((a),0,(s)) -#define bcmp memcmp -#define bcopy(s,d,i) memcpy(d,s,i) -#else /* __rtems__ */ - -extern int innetgr __P(( const char *, const char *, const char *, const char * )); - -int __ivaliduser __P((FILE *, u_long, const char *, const char *)); -static int __icheckhost __P((u_long, char *)); - -#endif - -int -rcmd(ahost, rport, locuser, remuser, cmd, fd2p) - char **ahost; - u_short rport; - const char *locuser, *remuser, *cmd; - int *fd2p; -{ - struct hostent *hp; - struct sockaddr_in sin, from; - fd_set reads; -#ifndef __rtems__ - long oldmask; -#endif - pid_t pid; - int s, lport, timo; - char c; - - pid = getpid(); - hp = gethostbyname(*ahost); - if (hp == NULL) { - herror(*ahost); - return (-1); - } - *ahost = hp->h_name; -#ifndef __rtems__ - oldmask = sigblock(sigmask(SIGURG)); -#endif - for (timo = 1, lport = IPPORT_RESERVED - 1;;) { - s = rresvport(&lport); - if (s < 0) { - if (errno == EAGAIN) - (void)fprintf(stderr, - "rcmd: socket: All ports in use\n"); - else - (void)fprintf(stderr, "rcmd: socket: %s\n", - strerror(errno)); -#ifndef __rtems__ - sigsetmask(oldmask); -#endif - return (-1); - } - fcntl(s, F_SETOWN, pid); - bzero(&sin, sizeof sin); - sin.sin_len = sizeof(struct sockaddr_in); - sin.sin_family = hp->h_addrtype; - sin.sin_port = rport; - bcopy(hp->h_addr_list[0], &sin.sin_addr, MIN(hp->h_length, sizeof sin.sin_addr)); - if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0) - break; - (void)close(s); - if (errno == EADDRINUSE) { - lport--; - continue; - } - if (errno == ECONNREFUSED && timo <= 16) { - (void)sleep(timo); - timo *= 2; - continue; - } - if (hp->h_addr_list[1] != NULL) { - int oerrno = errno; - - (void)fprintf(stderr, "connect to address %s: ", - inet_ntoa(sin.sin_addr)); - errno = oerrno; - perror(0); - hp->h_addr_list++; - bcopy(hp->h_addr_list[0], &sin.sin_addr, MIN(hp->h_length, sizeof sin.sin_addr)); - (void)fprintf(stderr, "Trying %s...\n", - inet_ntoa(sin.sin_addr)); - continue; - } - (void)fprintf(stderr, "%s: %s\n", hp->h_name, strerror(errno)); -#ifndef __rtems__ - sigsetmask(oldmask); -#endif - return (-1); - } - lport--; - if (fd2p == 0) { - write(s, "", 1); - lport = 0; - } else { - char num[8]; - int s2 = rresvport(&lport), s3; - int len = sizeof(from); - int nfds; - - if (s2 < 0) - goto bad; - listen(s2, 1); - (void)snprintf(num, sizeof(num), "%d", lport); - if (write(s, num, strlen(num)+1) != strlen(num)+1) { - (void)fprintf(stderr, - "rcmd: write (setting up stderr): %s\n", - strerror(errno)); - (void)close(s2); - goto bad; - } - nfds = max(s, s2)+1; - if(nfds > FD_SETSIZE) { - fprintf(stderr, "rcmd: too many files\n"); - (void)close(s2); - goto bad; - } -again: - FD_ZERO(&reads); - FD_SET(s, &reads); - FD_SET(s2, &reads); - errno = 0; - if (select(nfds, &reads, 0, 0, 0) < 1 || !FD_ISSET(s2, &reads)){ - if (errno != 0) - (void)fprintf(stderr, - "rcmd: select (setting up stderr): %s\n", - strerror(errno)); - else - (void)fprintf(stderr, - "select: protocol failure in circuit setup\n"); - (void)close(s2); - goto bad; - } - s3 = accept(s2, (struct sockaddr *)&from, &len); - /* - * XXX careful for ftp bounce attacks. If discovered, shut them - * down and check for the real auxiliary channel to connect. - */ - if (from.sin_family == AF_INET && from.sin_port == htons(20)) { - close(s3); - goto again; - } - (void)close(s2); - if (s3 < 0) { - (void)fprintf(stderr, - "rcmd: accept: %s\n", strerror(errno)); - lport = 0; - goto bad; - } - *fd2p = s3; - from.sin_port = ntohs((u_short)from.sin_port); - if (from.sin_family != AF_INET || - from.sin_port >= IPPORT_RESERVED || - from.sin_port < IPPORT_RESERVED / 2) { - (void)fprintf(stderr, - "socket: protocol failure in circuit setup.\n"); - goto bad2; - } - } - (void)write(s, locuser, strlen(locuser)+1); - (void)write(s, remuser, strlen(remuser)+1); - (void)write(s, cmd, strlen(cmd)+1); - if (read(s, &c, 1) != 1) { - (void)fprintf(stderr, - "rcmd: %s: %s\n", *ahost, strerror(errno)); - goto bad2; - } - if (c != 0) { - while (read(s, &c, 1) == 1) { - (void)write(STDERR_FILENO, &c, 1); - if (c == '\n') - break; - } - goto bad2; - } -#ifndef __rtems__ - sigsetmask(oldmask); -#endif - return (s); -bad2: - if (lport) - (void)close(*fd2p); -bad: - (void)close(s); -#ifndef __rtems__ - sigsetmask(oldmask); -#endif - return (-1); -} - -int -rresvport(alport) - int *alport; -{ - struct sockaddr_in sin; - int s; - - bzero(&sin, sizeof sin); - sin.sin_len = sizeof(struct sockaddr_in); - sin.sin_family = AF_INET; - sin.sin_addr.s_addr = INADDR_ANY; - s = socket(AF_INET, SOCK_STREAM, 0); - if (s < 0) - return (-1); -#if 0 /* compat_exact_traditional_rresvport_semantics */ - sin.sin_port = htons((u_short)*alport); - if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0) - return (s); - if (errno != EADDRINUSE) { - (void)close(s); - return (-1); - } -#endif - sin.sin_port = 0; - if (bindresvport(s, &sin) == -1) { - (void)close(s); - return (-1); - } - *alport = (int)ntohs(sin.sin_port); - return (s); -} - -#ifndef __rtems__ -int __check_rhosts_file = 1; -char *__rcmd_errstr; - -int -ruserok(rhost, superuser, ruser, luser) - const char *rhost, *ruser, *luser; - int superuser; -{ - struct hostent *hp; - u_long addr; - char **ap; - - if ((hp = gethostbyname(rhost)) == NULL) - return (-1); - for (ap = hp->h_addr_list; *ap; ++ap) { - bcopy(*ap, &addr, sizeof(addr)); - if (iruserok(addr, superuser, ruser, luser) == 0) - return (0); - } - return (-1); -} - -/* - * New .rhosts strategy: We are passed an ip address. We spin through - * hosts.equiv and .rhosts looking for a match. When the .rhosts only - * has ip addresses, we don't have to trust a nameserver. When it - * contains hostnames, we spin through the list of addresses the nameserver - * gives us and look for a match. - * - * Returns 0 if ok, -1 if not ok. - */ -int -iruserok(raddr, superuser, ruser, luser) - u_long raddr; - int superuser; - const char *ruser, *luser; -{ - register char *cp; - struct stat sbuf; - struct passwd *pwd; - FILE *hostf; - uid_t uid; - int first; - char pbuf[MAXPATHLEN]; - - first = 1; - hostf = superuser ? NULL : fopen(_PATH_HEQUIV, "r"); -again: - if (hostf) { - if (__ivaliduser(hostf, raddr, luser, ruser) == 0) { - (void)fclose(hostf); - return (0); - } - (void)fclose(hostf); - } - if (first == 1 && (__check_rhosts_file || superuser)) { - first = 0; - if ((pwd = getpwnam(luser)) == NULL) - return (-1); - (void)strcpy(pbuf, pwd->pw_dir); - (void)strcat(pbuf, "/.rhosts"); - - /* - * Change effective uid while opening .rhosts. If root and - * reading an NFS mounted file system, can't read files that - * are protected read/write owner only. - */ - uid = geteuid(); - (void)seteuid(pwd->pw_uid); - hostf = fopen(pbuf, "r"); - (void)seteuid(uid); - - if (hostf == NULL) - return (-1); - /* - * If not a regular file, or is owned by someone other than - * user or root or if writeable by anyone but the owner, quit. - */ - cp = NULL; - if (lstat(pbuf, &sbuf) < 0) - cp = ".rhosts lstat failed"; - else if (!S_ISREG(sbuf.st_mode)) - cp = ".rhosts not regular file"; - else if (fstat(fileno(hostf), &sbuf) < 0) - cp = ".rhosts fstat failed"; - else if (sbuf.st_uid && sbuf.st_uid != pwd->pw_uid) - cp = "bad .rhosts owner"; - else if (sbuf.st_mode & (S_IWGRP|S_IWOTH)) - cp = ".rhosts writeable by other than owner"; - /* If there were any problems, quit. */ - if (cp) { - __rcmd_errstr = cp; - (void)fclose(hostf); - return (-1); - } - goto again; - } - return (-1); -} - -/* - * XXX - * Don't make static, used by lpd(8). - * - * Returns 0 if ok, -1 if not ok. - */ -int -__ivaliduser(hostf, raddr, luser, ruser) - FILE *hostf; - u_long raddr; - const char *luser, *ruser; -{ - register char *user, *p; - int ch; - char buf[MAXHOSTNAMELEN + 128]; /* host + login */ - char hname[MAXHOSTNAMELEN]; - struct hostent *hp; - /* Presumed guilty until proven innocent. */ - int userok = 0, hostok = 0; -#ifdef YP - char *ypdomain; - - if (yp_get_default_domain(&ypdomain)) - ypdomain = NULL; -#else -#define ypdomain NULL -#endif - /* We need to get the damn hostname back for netgroup matching. */ - if ((hp = gethostbyaddr((char *)&raddr, sizeof(u_long), - AF_INET)) == NULL) - return (-1); - strncpy(hname, hp->h_name, sizeof(hname)); - hname[sizeof(hname) - 1] = '\0'; - - while (fgets(buf, sizeof(buf), hostf)) { - p = buf; - /* Skip lines that are too long. */ - if (strchr(p, '\n') == NULL) { - while ((ch = getc(hostf)) != '\n' && ch != EOF); - continue; - } - if (*p == '\n' || *p == '#') { - /* comment... */ - continue; - } - while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0') { - *p = isupper(*p) ? tolower(*p) : *p; - p++; - } - if (*p == ' ' || *p == '\t') { - *p++ = '\0'; - while (*p == ' ' || *p == '\t') - p++; - user = p; - while (*p != '\n' && *p != ' ' && - *p != '\t' && *p != '\0') - p++; - } else - user = p; - *p = '\0'; - /* - * Do +/- and +@/-@ checking. This looks really nasty, - * but it matches SunOS's behavior so far as I can tell. - */ - switch(buf[0]) { - case '+': - if (!buf[1]) { /* '+' matches all hosts */ - hostok = 1; - break; - } - if (buf[1] == '@') /* match a host by netgroup */ - hostok = innetgr((char *)&buf[2], - (char *)&hname, NULL, ypdomain); - else /* match a host by addr */ - hostok = __icheckhost(raddr,(char *)&buf[1]); - break; - case '-': /* reject '-' hosts and all their users */ - if (buf[1] == '@') { - if (innetgr((char *)&buf[2], - (char *)&hname, NULL, ypdomain)) - return(-1); - } else { - if (__icheckhost(raddr,(char *)&buf[1])) - return(-1); - } - break; - default: /* if no '+' or '-', do a simple match */ - hostok = __icheckhost(raddr, buf); - break; - } - switch(*user) { - case '+': - if (!*(user+1)) { /* '+' matches all users */ - userok = 1; - break; - } - if (*(user+1) == '@') /* match a user by netgroup */ - userok = innetgr(user+2, NULL, ruser, ypdomain); - else /* match a user by direct specification */ - userok = !(strcmp(ruser, user+1)); - break; - case '-': /* if we matched a hostname, */ - if (hostok) { /* check for user field rejections */ - if (!*(user+1)) - return(-1); - if (*(user+1) == '@') { - if (innetgr(user+2, NULL, - ruser, ypdomain)) - return(-1); - } else { - if (!strcmp(ruser, user+1)) - return(-1); - } - } - break; - default: /* no rejections: try to match the user */ - if (hostok) - userok = !(strcmp(ruser,*user ? user : luser)); - break; - } - if (hostok && userok) - return(0); - } - return (-1); -} - -/* - * Returns "true" if match, 0 if no match. - */ -static int -__icheckhost(raddr, lhost) - u_long raddr; - register char *lhost; -{ - register struct hostent *hp; - register u_long laddr; - register char **pp; - - /* Try for raw ip address first. */ - if (isdigit(*lhost) && (long)(laddr = inet_addr(lhost)) != -1) - return (raddr == laddr); - - /* Better be a hostname. */ - if ((hp = gethostbyname(lhost)) == NULL) - return (0); - - /* Spin through ip addresses. */ - for (pp = hp->h_addr_list; *pp; ++pp) - if (!bcmp(&raddr, *pp, sizeof(u_long))) - return (1); - - /* No match. */ - return (0); -} -#endif -- cgit v1.2.3