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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5.1.1 */ 27*0Sstevel@tonic-gate 28*0Sstevel@tonic-gate /* 29*0Sstevel@tonic-gate * 30*0Sstevel@tonic-gate * nlsrequest(3): 31*0Sstevel@tonic-gate * 32*0Sstevel@tonic-gate * Send service request message to remote listener 33*0Sstevel@tonic-gate * on previously established virtual circuit to remote 34*0Sstevel@tonic-gate * listener process. 35*0Sstevel@tonic-gate * 36*0Sstevel@tonic-gate * If an error occurrs, t_errno will contain an error code. 37*0Sstevel@tonic-gate * 38*0Sstevel@tonic-gate * Setting the external integer "_nlslog" to any non-zero 39*0Sstevel@tonic-gate * value before calling nlsrequest, will cause nlsrequest 40*0Sstevel@tonic-gate * to print debug information on stderr. 41*0Sstevel@tonic-gate * 42*0Sstevel@tonic-gate * client/server process pairs should include their own 43*0Sstevel@tonic-gate * initial handshake to insure connectivity. 44*0Sstevel@tonic-gate * 45*0Sstevel@tonic-gate * This version of nlsrequest includes the 46*0Sstevel@tonic-gate * service request response message. 47*0Sstevel@tonic-gate */ 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate #include <stdio.h> 51*0Sstevel@tonic-gate #include <ctype.h> 52*0Sstevel@tonic-gate #include <fcntl.h> 53*0Sstevel@tonic-gate #include <errno.h> 54*0Sstevel@tonic-gate #include <string.h> 55*0Sstevel@tonic-gate #include <stdlib.h> 56*0Sstevel@tonic-gate #include <sys/tiuser.h> 57*0Sstevel@tonic-gate #include "listen.h" 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate extern int _nlslog; /* non-zero allows use of stderr */ 60*0Sstevel@tonic-gate char *_nlsrmsg = (char *)0; 61*0Sstevel@tonic-gate static char _nlsbuf[256]; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate int 65*0Sstevel@tonic-gate nlsrequest(int fd, char *svc_code) 66*0Sstevel@tonic-gate { 67*0Sstevel@tonic-gate int len, err, flags; 68*0Sstevel@tonic-gate char buf[256]; 69*0Sstevel@tonic-gate char *p; 70*0Sstevel@tonic-gate int version, ret; 71*0Sstevel@tonic-gate extern int t_errno; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate t_errno = 0; /* indicates a 'name' problem */ 74*0Sstevel@tonic-gate buf[0] = 0; 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate /* 77*0Sstevel@tonic-gate * Validate service code 78*0Sstevel@tonic-gate */ 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate if (!svc_code || !strlen(svc_code) || 81*0Sstevel@tonic-gate (strlen(svc_code) >= (size_t)SVC_CODE_SZ)) { 82*0Sstevel@tonic-gate if (_nlslog) 83*0Sstevel@tonic-gate fprintf(stderr, "nlsrequest: invalid service code format\n"); 84*0Sstevel@tonic-gate return(-1); 85*0Sstevel@tonic-gate } 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* 88*0Sstevel@tonic-gate * send protocol message requesting the service 89*0Sstevel@tonic-gate */ 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate len = sprintf(buf, nls_v2_msg, svc_code)+1;/* inc trailing null */ 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate if (t_snd(fd, buf, len, 0) < len) { 94*0Sstevel@tonic-gate if (_nlslog) 95*0Sstevel@tonic-gate t_error("t_snd of listener request message failed"); 96*0Sstevel@tonic-gate return(-1); 97*0Sstevel@tonic-gate } 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate p = _nlsbuf; 100*0Sstevel@tonic-gate len = 0; 101*0Sstevel@tonic-gate 102*0Sstevel@tonic-gate do { 103*0Sstevel@tonic-gate if (++len > sizeof(_nlsbuf)) { 104*0Sstevel@tonic-gate if (_nlslog) 105*0Sstevel@tonic-gate fprintf(stderr, "nlsrequest: _nlsbuf not large enough\n"); 106*0Sstevel@tonic-gate return(-1); 107*0Sstevel@tonic-gate } 108*0Sstevel@tonic-gate if (t_rcv(fd, p, sizeof(char), &flags) != sizeof(char)) { 109*0Sstevel@tonic-gate if (_nlslog) 110*0Sstevel@tonic-gate t_error("t_rcv of listener response msg failed"); 111*0Sstevel@tonic-gate return(-1); 112*0Sstevel@tonic-gate } 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate } while (*p++ != '\0'); 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate if ((p = strtok(_nlsbuf, ":")) == (char *)0) 118*0Sstevel@tonic-gate goto parsefail; 119*0Sstevel@tonic-gate version = atoi(p); 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate if ((p = strtok((char *)0, ":")) == (char *)0) 122*0Sstevel@tonic-gate goto parsefail; 123*0Sstevel@tonic-gate ret = atoi(p); 124*0Sstevel@tonic-gate _nlsrmsg = p + strlen(p) + 1; 125*0Sstevel@tonic-gate if (ret && _nlslog) 126*0Sstevel@tonic-gate fprintf(stderr, "%s\n", _nlsrmsg); /* debug only */ 127*0Sstevel@tonic-gate return(ret); 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate parsefail: 130*0Sstevel@tonic-gate if (_nlslog) 131*0Sstevel@tonic-gate fprintf(stderr, "nlsrequest: failed parse of response message\n"); 132*0Sstevel@tonic-gate return(-1); 133*0Sstevel@tonic-gate } 134