135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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/* Copyright (c) 1990, 1991, 1992 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1985, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ident "@(#)listen:nlsrequest.c 1.5.4.1"
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#ident "$Header: /proj/irix6.5.7m/isms/eoe/lib/libnls/RCS/nlsrequest.c,v 1.1 1992/11/06 18:34:24 coolidge Exp $"
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/*
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*
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* nlsrequest(3):
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*
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* Send service request message to remote listener
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* on previously established virtual circuit to remote
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* listener process.
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*
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* If an error occurrs, t_errno will contain an error code.
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*
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* Setting the external integer "_nlslog" to any non-zero
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* value before calling nlsrequest, will cause nlsrequest
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* to print debug information on stderr.
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*
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* client/server process pairs should include their own
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* initial handshake to insure connectivity.
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*
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* This version of nlsrequest includes the
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* service request response message.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/tiuser.h>
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#include "listen.h"
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extern int _nlslog; /* non-zero allows use of stderr */
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char *_nlsrmsg = (char *)0;
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static char _nlsbuf[256];
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int
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nlsrequest(fd, svc_code)
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int fd;
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char *svc_code;
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{
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int len, err, flags;
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char buf[256];
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char *p;
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int version, ret;
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extern int t_errno;
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t_errno = 0; /* indicates a 'name' problem */
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buf[0] = 0;
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/*
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* Validate service code
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*/
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if (!svc_code || !strlen(svc_code) || (strlen(svc_code) >= SVC_CODE_SZ)) {
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if (_nlslog)
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fprintf(stderr, "nlsrequest: invalid service code format\n");
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return(-1);
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}
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/*
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* send protocol message requesting the service
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*/
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len = sprintf(buf, nls_v2_msg, svc_code)+1;/* inc trailing null */
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if (t_snd(fd, buf, len, 0) < len) {
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if (_nlslog)
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t_error("t_snd of listener request message failed");
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return(-1);
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}
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p = _nlsbuf;
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len = 0;
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do {
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if (++len > sizeof(_nlsbuf)) {
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if (_nlslog)
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fprintf(stderr, "nlsrequest: _nlsbuf not large enough\n");
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return(-1);
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}
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if (t_rcv(fd, p, sizeof(char), &flags) != sizeof(char)) {
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if (_nlslog)
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t_error("t_rcv of listener response msg failed");
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return(-1);
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}
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} while (*p++ != '\0');
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if ((p = strtok(_nlsbuf, ":")) == (char *)0)
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goto parsefail;
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version = atoi(p);
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if ((p = strtok((char *)0, ":")) == (char *)0)
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goto parsefail;
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ret = atoi(p);
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_nlsrmsg = p + strlen(p) + 1;
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if (ret && _nlslog)
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fprintf(stderr, "%s\n", _nlsrmsg); /* debug only */
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return(ret);
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parsefail:
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if (_nlslog)
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fprintf(stderr, "nlsrequest: failed parse of response message\n");
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return(-1);
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}
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