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path: root/usr/src/lib/libbc/libc/net/rcmd.c
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Diffstat (limited to 'usr/src/lib/libbc/libc/net/rcmd.c')
-rw-r--r--usr/src/lib/libbc/libc/net/rcmd.c391
1 files changed, 0 insertions, 391 deletions
diff --git a/usr/src/lib/libbc/libc/net/rcmd.c b/usr/src/lib/libbc/libc/net/rcmd.c
deleted file mode 100644
index 89e8f79f44..0000000000
--- a/usr/src/lib/libbc/libc/net/rcmd.c
+++ /dev/null
@@ -1,391 +0,0 @@
-/*
- * Copyright 1995 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
- */
-
-/*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
-#pragma ident "%Z%%M% %I% %E% SMI"
-
-#include <stdio.h>
-#include <ctype.h>
-#include <pwd.h>
-#include <sys/param.h>
-#include <sys/file.h>
-#include <sys/signal.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-
-#include <netinet/in.h>
-
-#include <netdb.h>
-#include <errno.h>
-
-#include <strings.h>
-
-static char *domain;
-
-int
-rcmd(
- char **ahost,
- unsigned short rport,
- const char *locuser,
- const char *remuser,
- const char *cmd,
- int *fd2p)
-{
- int s, timo = 1, pid, oldmask, retval;
- struct sockaddr_in sin, from;
- char c;
- int lport = IPPORT_RESERVED - 1;
- struct hostent *hp;
-
- pid = getpid();
- hp = gethostbyname(*ahost);
- if (hp == 0) {
- fprintf(stderr, "%s: unknown host\n", *ahost);
- return (-1);
- }
- *ahost = hp->h_name;
- oldmask = sigblock(sigmask(SIGURG));
- for (;;) {
- s = rresvport(&lport);
- if (s < 0) {
- if (errno == EAGAIN)
- fprintf(stderr, "socket: All ports in use\n");
- else
- perror("rcmd: socket");
- sigsetmask(oldmask);
- return (-1);
- }
- fcntl(s, F_SETOWN, pid);
- sin.sin_family = hp->h_addrtype;
- bcopy(hp->h_addr_list[0], (caddr_t)&sin.sin_addr, hp->h_length);
- sin.sin_port = rport;
- if (connect(s, &sin, sizeof (sin)) >= 0)
- break;
- (void) close(s);
- if (errno == EADDRINUSE) {
- lport--;
- continue;
- }
- if (errno == ECONNREFUSED && timo <= 16) {
- sleep(timo);
- timo *= 2;
- continue;
- }
- if (hp->h_addr_list[1] != NULL) {
- int oerrno = errno;
-
- 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], (caddr_t)&sin.sin_addr,
- hp->h_length);
- fprintf(stderr, "Trying %s...\n",
- inet_ntoa(sin.sin_addr));
- continue;
- }
- perror(hp->h_name);
- sigsetmask(oldmask);
- return (-1);
- }
- lport--;
- if (fd2p == 0) {
- write(s, "", 1);
- lport = 0;
- } else {
- char num[8];
- int s2 = rresvport(&lport), s3;
- int len = sizeof (from);
-
- if (s2 < 0)
- goto bad;
- listen(s2, 1);
- (void) sprintf(num, "%d", lport);
- if (write(s, num, strlen(num)+1) != strlen(num)+1) {
- perror("write: setting up stderr");
- (void) close(s2);
- goto bad;
- }
- s3 = accept(s2, &from, &len);
- (void) close(s2);
- if (s3 < 0) {
- perror("accept");
- 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) {
- 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);
- retval = read(s, &c, 1);
- if (retval != 1) {
- if (retval == 0) {
- fprintf(stderr,
- "Protocol error, %s closed connection\n", *ahost);
- } else if (retval < 0) {
- perror(*ahost);
- } else {
- fprintf(stderr,
- "Protocol error, %s sent %d bytes\n", *ahost, retval);
- }
- goto bad2;
- }
- if (c != 0) {
- while (read(s, &c, 1) == 1) {
- (void) write(2, &c, 1);
- if (c == '\n')
- break;
- }
- goto bad2;
- }
- sigsetmask(oldmask);
- return (s);
-bad2:
- if (lport)
- (void) close(*fd2p);
-bad:
- (void) close(s);
- sigsetmask(oldmask);
- return (-1);
-}
-
-int
-rresvport(int *alport)
-{
- struct sockaddr_in sin;
- int s;
-
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = INADDR_ANY;
- s = socket(AF_INET, SOCK_STREAM, 0);
- if (s < 0)
- return (-1);
- for (;;) {
- sin.sin_port = htons((u_short)*alport);
- if (bind(s, (caddr_t)&sin, sizeof (sin)) >= 0)
- return (s);
- if (errno != EADDRINUSE) {
- (void) close(s);
- return (-1);
- }
- (*alport)--;
- if (*alport == IPPORT_RESERVED/2) {
- (void) close(s);
- errno = EAGAIN; /* close */
- return (-1);
- }
- }
-}
-
-int
-ruserok(
- const char *rhost,
- int superuser,
- const char *ruser,
- const char *luser)
-{
- FILE *hostf;
- char fhost[MAXHOSTNAMELEN];
- const char *sp;
- char *p;
- int baselen = -1;
-
- struct stat sbuf;
- struct passwd *pwd;
- char pbuf[MAXPATHLEN];
- int euid = -1;
-
- sp = rhost;
- p = fhost;
- while (*sp) {
- if (*sp == '.') {
- if (baselen == -1)
- baselen = sp - rhost;
- *p++ = *sp++;
- } else {
- *p++ = isupper(*sp) ? tolower(*sp++) : *sp++;
- }
- }
- *p = '\0';
-
- /* check /etc/hosts.equiv */
- if (!superuser) {
- if ((hostf = fopen("/etc/hosts.equiv", "r")) != NULL) {
- if (!_validuser(hostf, fhost, luser, ruser, baselen)) {
- (void) fclose(hostf);
- return(0);
- }
- (void) fclose(hostf);
- }
- }
-
- /* check ~/.rhosts */
-
- if ((pwd = getpwnam(luser)) == NULL)
- return(-1);
- (void)strcpy(pbuf, pwd->pw_dir);
- (void)strcat(pbuf, "/.rhosts");
-
- /*
- * Read .rhosts as the local user to avoid NFS mapping the root uid
- * to something that can't read .rhosts.
- */
- euid = geteuid();
- (void) seteuid (pwd->pw_uid);
- if ((hostf = fopen(pbuf, "r")) == NULL) {
- if (euid != -1)
- (void) seteuid (euid);
- return(-1);
- }
- (void)fstat(fileno(hostf), &sbuf);
- if (sbuf.st_uid && sbuf.st_uid != pwd->pw_uid) {
- fclose(hostf);
- if (euid != -1)
- (void) seteuid (euid);
- return(-1);
- }
-
- if (!_validuser(hostf, fhost, luser, ruser, baselen)) {
- (void) fclose(hostf);
- if (euid != -1)
- (void) seteuid (euid);
- return(0);
- }
-
- (void) fclose(hostf);
- if (euid != -1)
- (void) seteuid (euid);
- return (-1);
-}
-
-int
-_validuser(FILE *hostf, char *rhost, char *luser, char *ruser, int baselen)
-{
- char *user;
- char ahost[MAXHOSTNAMELEN];
- int hostmatch, usermatch;
- char *p;
-
- if (domain == NULL) {
- (void) yp_get_default_domain(&domain);
- }
- while (fgets(ahost, sizeof (ahost), hostf)) {
- hostmatch = usermatch = 0; /* bugid fix 1033104 */
- p = ahost;
- 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';
- if (ahost[0] == '+' && ahost[1] == 0)
- hostmatch = 1;
- else if (ahost[0] == '+' && ahost[1] == '@')
- hostmatch = innetgr(ahost + 2, rhost,
- NULL, domain);
- else if (ahost[0] == '-' && ahost[1] == '@') {
- if (innetgr(ahost + 2, rhost, NULL, domain))
- break;
- }
- else if (ahost[0] == '-') {
- if (_checkhost(rhost, ahost+1, baselen))
- break;
- }
- else
- hostmatch = _checkhost(rhost, ahost, baselen);
- if (user[0]) {
- if (user[0] == '+' && user[1] == 0)
- usermatch = 1;
- else if (user[0] == '+' && user[1] == '@')
- usermatch = innetgr(user+2, NULL,
- ruser, domain);
- else if (user[0] == '-' && user[1] == '@') {
- if (hostmatch && innetgr(user+2, NULL,
- ruser, domain))
- break;
- }
- else if (user[0] == '-') {
- if (hostmatch && !strcmp(user+1, ruser))
- break;
- }
- else
- usermatch = !strcmp(user, ruser);
- }
- else
- usermatch = !strcmp(ruser, luser);
- if (hostmatch && usermatch)
- return (0);
- }
- return (-1);
-}
-
-int
-_checkhost(char *rhost, char *lhost, int len)
-{
- static char *ldomain;
- static char *domainp;
- static int nodomain;
- char *cp;
-
- if (ldomain == NULL) {
- ldomain = (char *)malloc(MAXHOSTNAMELEN+1);
- if (ldomain == 0)
- return (0);
- }
-
- if (len == -1)
- return(!strcmp(rhost, lhost));
- if (strncmp(rhost, lhost, len))
- return(0);
- if (!strcmp(rhost, lhost))
- return(1);
- if (*(lhost + len) != '\0')
- return(0);
- if (nodomain)
- return(0);
- if (!domainp) {
- /*
- * "domainp" points after the first dot in the host name
- */
- if (gethostname(ldomain, MAXHOSTNAMELEN) == -1) {
- nodomain = 1;
- return(0);
- }
- ldomain[MAXHOSTNAMELEN] = NULL;
- if ((domainp = index(ldomain, '.')) == (char *)NULL) {
- nodomain = 1;
- return(0);
- }
- domainp++;
- cp = domainp;
- while (*cp) {
- *cp = isupper(*cp) ? tolower(*cp) : *cp;
- cp++;
- }
- }
- return(!strcmp(domainp, rhost + len +1));
-}
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