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Power 6/32 Unix version 1.21

/*	D.L.Buck and Associates, Inc. - 8/27/84
 *
 *	COPYRIGHT NOTICE:
 *		Copyright c 8/27/84 - An unpublished work by 
 *		D.L.Buck and Associates, Inc.
 *
 *	PROPRIETARY RIGHTS NOTICE:
 *		All rights reserved. This document and program contains
 *		proprietary information of D.L.Buck and Associates,Inc.
 *		of San Jose, California, U.S.A., embodying confidential
 *		information,  ideas, and expressions,  no part of which
 *		may be reproduced, or transmitted in any form or by any
 *		means,  electronic,  mechanical,  or otherwise, without
 *		the written permission of D.L.Buck and Associates, Inc.
 *
 * NAME
 *	bscmon - BISYNC communications monitoring utility
 *
 * SYNOPSIS
 *	bscmon [-data] [-host=<hostname>] [file]
 *		       [-dev=<devname>]
 *
 * DESCRIPTION
 *	bscmon records trace information from the BISYNC trace device
 *	(/dev/bsc*tr) while BISYNC communications are taking place. 
 *	Information is recorded either in a data file for processing
 *	by bsctrace later, or sent to stdout for immediate processing
 *	by bsctrace via a pipe.
 *
 * ALGORITHM
 *	1. open device for reading
 *		a. if host specified, read host configuration file for
 *		   device name (name = /dev/<hostdev>tr).
 *		b. if device specified, open it.
 *		c. if none specified (or found in host configuration file)
 *		   open /dev/bsctr.
 *	2. open data file (if specified). stdout is default.
 *	3. while not EOF, read TBUFSIZE bytes from device and put in file or
 *	   stdout.
 *	4. close device (and file, if specified).
 */
#include <sys/types.h>
#include "local.h"
#include <bsc/bsctr.h>
#include <stdio.h>

#ifndef lint
static char sccsid[] = "@(#)bscmon.c	1.3 REL";
#endif

#define YES 1
#define NO 0

char pathname[50] = "/usr/lib/bscbatch/";	/* path to host config file */
void exit();
char *strcpy(), *strcat();

main(argc,argv)
int argc;
char *argv[];
{
	register unsigned i;
	int data = NO;		/* should trace include actual data being
				   sent and received? */
	char devname[20];	/* contains trace device name */
	char dbuff[TBUFSIZE];	/* trace data is read in here */
	char buff[100];
	char *fgets();		/* get a line from a file */

	FILE *fopen();		/* function opens files */
	FILE *fptr;		/* file pointer for fopen */

	int outfd;		/* output file descriptor */
	int devfd;		/* device file descriptor */

	/* set default values */
	outfd = 1;		/* 1 is stdout's file descriptor */
	strcpy(devname,"/dev/bsctr");

	/* get options from command line */
	for (i=1;i<argc;++i) {
		/* if [-data] specified,
		 * save actual data being sent and received
		 */
		if (strcmp(argv[i],"-data") == 0)
		{	data = YES;
			continue;	}

		/* if [-host=<hostname>] specified, get device name from
		   host configuration file in lib/bscbatch */
		if (strncmp(argv[i],"-host=",6) == 0) {
			strcat(pathname,&argv[i][6]);

			if ((fptr = fopen(pathname,"r")) == NULL) {
				fprintf(stderr,
				"bscmon: <%s> has no configuration file\n",
				&argv[i][6]);
				exit(1);	}

			while(fgets(buff,sizeof buff,fptr) != NULL)
				if (strncmp(buff,"DEVICE=",7) == 0)	{
					buff[strlen(buff)-1] = '\0';
					sprintf(devname,"%str",&buff[7]);
			}
			fclose(fptr);
			continue;
		}
		
		/* if [-dev=<devname>] specified,
		 * get device name from argv[i]
		 */
		if (strncmp(argv[i],"-dev=",5) == 0) {
			strcpy(devname,&argv[i][5]);
			continue;	}

		/* if [file] specified, open it to outptr */
		if (argv[i][0] != '-') {
			/* create mode 0666 sets this file's read/write 
			   permission for everyone */
			if ((outfd = creat(argv[i],0666)) == -1)
			{	fprintf(stderr,
				"bscmon: can't create <%s>\n",&argv[i]);
				exit(1);	}
			continue;
		}

		/* bad parameter */
		fprintf(stderr,"bscmon: invalid parameter <%s>\n",argv[i]);
		exit(1);
	}

	/* open trace device */
	if ((devfd = open(devname,0)) == -1)	/* '0' is read only flag */
	{	fprintf(stderr,"bscmon: trace device <%s> cannot be opened\n",
		devname);
		exit(1);	}

	if (data == YES)	
		ioctl(devfd,BSC_TRDATA,0);

	/* while number of bytes returned isn't 0,
	 * read data from trace device
	 */
	while ((i=read(devfd,dbuff,sizeof dbuff)) > 0)
		write(outfd,dbuff,i);
}

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