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
nlsrequest(int fd,char * svc_code)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