/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5.1.1 */ /* * * nlsrequest(3): * * Send service request message to remote listener * on previously established virtual circuit to remote * listener process. * * If an error occurrs, t_errno will contain an error code. * * Setting the external integer "_nlslog" to any non-zero * value before calling nlsrequest, will cause nlsrequest * to print debug information on stderr. * * client/server process pairs should include their own * initial handshake to insure connectivity. * * This version of nlsrequest includes the * service request response message. */ #include #include #include #include #include #include #include #include "listen.h" extern int _nlslog; /* non-zero allows use of stderr */ char *_nlsrmsg = (char *)0; static char _nlsbuf[256]; int nlsrequest(int fd, char *svc_code) { int len, err, flags; char buf[256]; char *p; int version, ret; extern int t_errno; t_errno = 0; /* indicates a 'name' problem */ buf[0] = 0; /* * Validate service code */ if (!svc_code || !strlen(svc_code) || (strlen(svc_code) >= (size_t)SVC_CODE_SZ)) { if (_nlslog) fprintf(stderr, "nlsrequest: invalid service code format\n"); return(-1); } /* * send protocol message requesting the service */ len = sprintf(buf, nls_v2_msg, svc_code)+1;/* inc trailing null */ if (t_snd(fd, buf, len, 0) < len) { if (_nlslog) t_error("t_snd of listener request message failed"); return(-1); } p = _nlsbuf; len = 0; do { if (++len > sizeof(_nlsbuf)) { if (_nlslog) fprintf(stderr, "nlsrequest: _nlsbuf not large enough\n"); return(-1); } if (t_rcv(fd, p, sizeof(char), &flags) != sizeof(char)) { if (_nlslog) t_error("t_rcv of listener response msg failed"); return(-1); } } while (*p++ != '\0'); if ((p = strtok(_nlsbuf, ":")) == (char *)0) goto parsefail; version = atoi(p); if ((p = strtok((char *)0, ":")) == (char *)0) goto parsefail; ret = atoi(p); _nlsrmsg = p + strlen(p) + 1; if (ret && _nlslog) fprintf(stderr, "%s\n", _nlsrmsg); /* debug only */ return(ret); parsefail: if (_nlslog) fprintf(stderr, "nlsrequest: failed parse of response message\n"); return(-1); }