1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1989 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate /* from UCB 4.8 83/08/18 */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #include <sys/types.h> 31*0Sstevel@tonic-gate #include <sys/socket.h> 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include <netinet/in.h> 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #include <stdio.h> 36*0Sstevel@tonic-gate #include <netdb.h> 37*0Sstevel@tonic-gate #include <errno.h> 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate extern errno; 40*0Sstevel@tonic-gate char *index(); 41*0Sstevel@tonic-gate char *getpass(), *getlogin(); 42*0Sstevel@tonic-gate #ifndef S5EMUL 43*0Sstevel@tonic-gate char *sprintf(); 44*0Sstevel@tonic-gate #endif 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate int 47*0Sstevel@tonic-gate rexec( 48*0Sstevel@tonic-gate char **ahost, 49*0Sstevel@tonic-gate unsigned short rport, 50*0Sstevel@tonic-gate const char *name, 51*0Sstevel@tonic-gate const char *pass, 52*0Sstevel@tonic-gate const char *cmd, 53*0Sstevel@tonic-gate int *fd2p) 54*0Sstevel@tonic-gate { 55*0Sstevel@tonic-gate int s, timo = 1, s3; 56*0Sstevel@tonic-gate struct sockaddr_in sin, sin2, from; 57*0Sstevel@tonic-gate char c; 58*0Sstevel@tonic-gate u_short port; 59*0Sstevel@tonic-gate struct hostent *hp; 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate hp = gethostbyname(*ahost); 62*0Sstevel@tonic-gate if (hp == 0) { 63*0Sstevel@tonic-gate fprintf(stderr, "%s: unknown host\n", *ahost); 64*0Sstevel@tonic-gate return (-1); 65*0Sstevel@tonic-gate } 66*0Sstevel@tonic-gate *ahost = hp->h_name; 67*0Sstevel@tonic-gate _ruserpass(hp->h_name, &name, &pass); 68*0Sstevel@tonic-gate retry: 69*0Sstevel@tonic-gate s = socket(AF_INET, SOCK_STREAM, 0); 70*0Sstevel@tonic-gate if (s < 0) { 71*0Sstevel@tonic-gate perror("rexec: socket"); 72*0Sstevel@tonic-gate return (-1); 73*0Sstevel@tonic-gate } 74*0Sstevel@tonic-gate sin.sin_family = hp->h_addrtype; 75*0Sstevel@tonic-gate sin.sin_port = rport; 76*0Sstevel@tonic-gate bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length); 77*0Sstevel@tonic-gate if (connect(s, &sin, sizeof(sin)) < 0) { 78*0Sstevel@tonic-gate if (errno == ECONNREFUSED && timo <= 16) { 79*0Sstevel@tonic-gate (void) close(s); 80*0Sstevel@tonic-gate sleep(timo); 81*0Sstevel@tonic-gate timo *= 2; 82*0Sstevel@tonic-gate goto retry; 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate perror(hp->h_name); 85*0Sstevel@tonic-gate (void) close(s); 86*0Sstevel@tonic-gate return (-1); 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate if (fd2p == 0) { 89*0Sstevel@tonic-gate (void) write(s, "", 1); 90*0Sstevel@tonic-gate port = 0; 91*0Sstevel@tonic-gate } else { 92*0Sstevel@tonic-gate char num[8]; 93*0Sstevel@tonic-gate int s2, sin2len; 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate s2 = socket(AF_INET, SOCK_STREAM, 0); 96*0Sstevel@tonic-gate if (s2 < 0) { 97*0Sstevel@tonic-gate (void) close(s); 98*0Sstevel@tonic-gate return (-1); 99*0Sstevel@tonic-gate } 100*0Sstevel@tonic-gate listen(s2, 1); 101*0Sstevel@tonic-gate sin2len = sizeof (sin2); 102*0Sstevel@tonic-gate if (getsockname(s2, (char *)&sin2, &sin2len) < 0 || 103*0Sstevel@tonic-gate sin2len != sizeof (sin2)) { 104*0Sstevel@tonic-gate perror("getsockname"); 105*0Sstevel@tonic-gate (void) close(s2); 106*0Sstevel@tonic-gate goto bad; 107*0Sstevel@tonic-gate } 108*0Sstevel@tonic-gate port = ntohs((u_short)sin2.sin_port); 109*0Sstevel@tonic-gate (void) sprintf(num, "%u", port); 110*0Sstevel@tonic-gate (void) write(s, num, strlen(num)+1); 111*0Sstevel@tonic-gate { int len = sizeof (from); 112*0Sstevel@tonic-gate s3 = accept(s2, &from, &len); 113*0Sstevel@tonic-gate close(s2); 114*0Sstevel@tonic-gate if (s3 < 0) { 115*0Sstevel@tonic-gate perror("accept"); 116*0Sstevel@tonic-gate port = 0; 117*0Sstevel@tonic-gate goto bad; 118*0Sstevel@tonic-gate } 119*0Sstevel@tonic-gate } 120*0Sstevel@tonic-gate *fd2p = s3; 121*0Sstevel@tonic-gate } 122*0Sstevel@tonic-gate (void) write(s, name, strlen(name) + 1); 123*0Sstevel@tonic-gate /* should public key encypt the password here */ 124*0Sstevel@tonic-gate (void) write(s, pass, strlen(pass) + 1); 125*0Sstevel@tonic-gate (void) write(s, cmd, strlen(cmd) + 1); 126*0Sstevel@tonic-gate if (read(s, &c, 1) != 1) { 127*0Sstevel@tonic-gate perror(*ahost); 128*0Sstevel@tonic-gate goto bad; 129*0Sstevel@tonic-gate } 130*0Sstevel@tonic-gate if (c != 0) { 131*0Sstevel@tonic-gate while (read(s, &c, 1) == 1) { 132*0Sstevel@tonic-gate (void) write(2, &c, 1); 133*0Sstevel@tonic-gate if (c == '\n') 134*0Sstevel@tonic-gate break; 135*0Sstevel@tonic-gate } 136*0Sstevel@tonic-gate goto bad; 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate return (s); 139*0Sstevel@tonic-gate bad: 140*0Sstevel@tonic-gate if (port) 141*0Sstevel@tonic-gate (void) close(*fd2p); 142*0Sstevel@tonic-gate (void) close(s); 143*0Sstevel@tonic-gate return (-1); 144*0Sstevel@tonic-gate } 145