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/************************************************************************/
/* File Name : gentest.c */
/* Program Name : gentest Version: 1.0.1 */
/* Author : Tom Webster <webster@kaiwan.com> */
/* Created : 1995/01/22 */
/* Last Modified By : Tom Webster Date: 1995/07/05 */
/* */
/* Compiler (created) : GCC 2.6.3 */
/* Compiler (env) : Linux 1.2.5 */
/* ANSI C Compatable : No */
/* POSIX Compatable : Yes? */
/* */
/* Purpose : Monitor the serial port connected to a UPS. */
/* : Allows DTR and/or RTS lines to be stet to */
/* : simulate genpowerd UPS monitoring software. */
/* : The gentest program will show the state of */
/* : the control lines in the serial connection. */
/* : */
/* : The primary purpose for gentest is to help */
/* : discover the settings for UPS monitoring */
/* : cables. */
/* : */
/* : The "-r" option will set the RTS control */
/* : line. The "-d" optin will set the DTR */
/* : control line. */
/* : */
/* : WARNING: If your UPS supports an inverter */
/* : shutdown, either RTS or DTR will be used to */
/* : kill the inverter. Tests should not be */
/* : performed if your system is using the UPS. */
/* : Specifically, the use of the "-r" and "-d" */
/* : options together is not recomended. */
/* */
/* Usage : genpowerd [-r] [-d] <serial device> */
/* : i.e. genpowerd -r /dev/cua4 */
/* : or: genpowerd -d /dev/cua4 */
/* : or: genpowerd -r -d /dev/cua4 */
/* */
/* Copyright : GNU Copyleft */
/************************************************************************/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#define MAXSTRING 10
#define MAXROW 6
#define MAXCOL 2
/* Global Array */
int statarray[MAXROW][MAXCOL];
int linestat(int, int);
int tester(int, int);
void stater(char *stat, int linestat, int oldstat);
void stater2(char *stat, int linestat);
/* Main program. */
int main(int argc, char **argv) {
int fd;
int rts_bit = TIOCM_RTS;
int dtr_bit = TIOCM_DTR;
int rts_set = 0;
int dtr_set = 0;
int status = 1;
int current = 0;
int next = 1;
int x = 0;
char *program_name;
char stat[MAXSTRING];
char tags[MAXSTRING][MAXROW] = { "DTR",
"RTS",
"CAR",
"CTS",
"DSR",
"RNG" };
int force = 1;
/* Parse the command line */
program_name = argv[0];
while ((argc > 1) && (argv[1][0] == '-')) {
switch (argv[1][1]) {
case 'r':
rts_set = 1;
break;
case 'd':
dtr_set = 1;
break;
default:
fprintf(stderr, "Usage: %s [-r] [-d] <device>\n", program_name);
exit(1);
} /* switch (argv[1][1]) */
argv++;
argc--;
} /* while ((argc > 1) && (argv[1][0] == '-')) */
/* Done with options, make sure that one port is specified */
if (argc != 2) {
fprintf(stderr, "Usage: %s [-r] [-d] <device>\n", program_name);
exit(1);
} /* if (argc != 2) */
/*********************/
/* Monitor the line. */
/*********************/
/* Open monitor device. */
if ((fd = open(argv[1], O_RDWR | O_NDELAY)) < 0) {
fprintf(stderr, "%s: %s", argv[1], sys_errlist[errno]);
exit(1);
} /* if ((fd = open(argv[1], O_RDWR | O_NDELAY)) < 0) */
/* Line is opened, so DTR and RTS are high. Clear them, can */
/* cause problems with some UPSs if they remain set. */
ioctl(fd, TIOCMBIC, &rts_bit);
ioctl(fd, TIOCMBIC, &dtr_bit);
/* Set line(s) to provide power high to enable monitoring of line. */
if (rts_set) {
ioctl(fd, TIOCMBIS, &rts_bit);
} /* if (rts_set) */
if (dtr_set) {
ioctl(fd, TIOCMBIS, &dtr_bit);
} /* if (dtr_set) */
/* Now sample the line. */
while(1) {
status = linestat(fd, current);
/* If force is set, force display of status */
if (force) {
status = force;
force = 0;
} /* if (force) */
if (status) {
printf("---------------\n");
stater2(stat, statarray[0][current]);
printf("%s = %s\n", tags[0], stat);
stater2(stat, statarray[1][current]);
printf("%s = %s\n\n", tags[1], stat);
for ( x=2; x < MAXROW; x++) {
stater(stat, statarray[x][current], statarray[x][next]);
printf("%s = %s\n", tags[x], stat);
} /* for ( x=2; x < MAXROW; x++) */
} /* if (status) */
/* Change array depth and sleep 2 seconds. */
if (current == 0) {
current = 1;
next = 0;
} else {
current = 0;
next = 1;
} /* if (current == 0) */
sleep(2);
} /* while(1) */
/* Never happens */
return(0);
} /* main */
/************************************************************************/
/* End of Function main */
/************************************************************************/
/************************************************************************/
/* Function : linestat */
/* Author : Tom Webster <webster@kaiwan.com> */
/* Created : 1995/02/05 */
/* Last Modified By : Date: */
/* */
/* Takes : File handle of open serial port. */
/* : Layer of global to alter. */
/* */
/* Returns : int containing result of test. */
/* : */
/* : >= 1 == Line status has changed */
/* : 0 == Line status has not changed. */
/* */
/* Purpose : Tests the serial lines to see if there have */
/* : been any changes, alters global array and */
/* : returns a positive int if changed. */
/* */
/************************************************************************/
int linestat(int fd, int layer)
{
int flags;
int x = 0;
int otherlayer;
int status = 0;
int lines[MAXROW] = { TIOCM_DTR,
TIOCM_RTS,
TIOCM_CAR,
TIOCM_CTS,
TIOCM_DSR,
TIOCM_RNG };
/* Compute the last layer from the current */
if (layer == 1) {
otherlayer = 0;
} else {
otherlayer = 1;
}
/* Get the status. */
ioctl(fd, TIOCMGET, &flags);
for(x=0; x < MAXROW; x++) {
statarray[x][layer] = tester(lines[x], flags);
if (statarray[x][layer] != statarray[x][otherlayer]) {
status++;
}
}
return(status);
} /* EOF linestat */
/************************************************************************/
/* End of Function linestat */
/************************************************************************/
/************************************************************************/
/* Function : tester */
/* Author : Tom Webster <webster@kaiwan.com> */
/* Created : 1995/01/22 */
/* Last Modified By : Date: */
/* */
/* Takes : Line of serial connection to test (int). */
/* : */
/* : The current status of the serial connection */
/* : as an int. */
/* */
/* Returns : int containing result of test. */
/* : */
/* : 1 == Tested line is in normal mode. */
/* : 0 == Tested line is in failure mode. */
/* */
/* Purpose : Tests the condition of a serial control line */
/* : to see if it is in normal or failure mode. */
/* */
/************************************************************************/
int tester(int testline, int testflags)
{
int genreturn;
if ((testflags & testline)) {
/* ON Value Returned */
genreturn = 1;
}else{
/* Off Value Returned */
genreturn = 0;
}
return(genreturn);
} /* EOF tester */
/************************************************************************/
/* End of Function tester */
/************************************************************************/
/************************************************************************/
/* Function : stater */
/* Author : Tom Webster <webster@kaiwan.com> */
/* Created : 1995/01/22 */
/* Last Modified By : Date: */
/* */
/* Takes : Pointer to character array. */
/* : */
/* : The current status of the serial connection */
/* : as an int. (zero or non-zero values) */
/* */
/* Returns : Places text string in provided array. */
/* : If line status is non-zero, "Low" is */
/* : returned. Otherwise, "High" is returned. */
/* */
/* Purpose : Converts the int status of serial control */
/* : line to human readable tags. */
/* */
/************************************************************************/
void stater(char *stat, int linestat, int oldstat)
{
if (linestat == oldstat) {
if (linestat) {
strcpy(stat, "High ( )");
} else {
strcpy(stat, "Low ( )");
}
} else {
if (linestat) {
strcpy(stat, "High (*)");
} else {
strcpy(stat, "Low (*)");
}
}
}
/************************************************************************/
/* End of Function stater */
/************************************************************************/
/************************************************************************/
/* Function : stater2 */
/* Author : Tom Webster <webster@kaiwan.com> */
/* Created : 1995/01/22 */
/* Last Modified By : Date: */
/* */
/* Takes : Pointer to character array. */
/* : */
/* : The current status of the serial connection */
/* : as an int. (zero or non-zero values) */
/* */
/* Returns : Places text string in provided array. */
/* : If line status is non-zero, "Set" is */
/* : returned. Otherwise, "Cleared" is returned. */
/* */
/* Purpose : Converts the int status of serial control */
/* : line to human readable tags. */
/* */
/************************************************************************/
void stater2(char *stat, int linestat)
{
if (linestat) {
strcpy(stat, "Set");
} else {
strcpy(stat, "Cleared");
}
}
/************************************************************************/
/* End of Function stater2 */
/************************************************************************/
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