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/*
* autopilot - Launches a given set of programs automaticly for the palm
*
* Copyright (C) 2000 Leigh Morresi (leigh@signal-x.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
********************************************************************
*
* Please cruise the man page (autopilot) or the README for more info
* about using this app.
*
* It was developed under:
* - Linux kernel 2.2.16
* - gcc version 2.7.2.3
* - no-name onboard serial card (16550 UART)
* - PalmPilot (USRobotics)
* - a little help from the statserial-1.1 sources.
*
* Leigh Morresi (leigh@signal-x.com)
*/
#ifndef PILOTDEVICE
#define PILOTDEVICE "/dev/palm"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <fcntl.h>
/* global */
char *device = PALMDEVICE; /* default device if none specified on command line */
char *command;
int defaultDelay = 2;
int line = TIOCM_DSR;
/* print command usage and exit */
void usage()
{
fprintf(stderr, "usage: autopilot [-n seconds] -h -c <command>\n");
fprintf(stderr, " -n interval between scan for pilot in seconds. (default %i)\n",defaultDelay);
fprintf(stderr, " -c command to run on active ie 'pilot-mail -p /dev/palm'\n");
fprintf(stderr, " -h check the RST line (hot sync button) instead.\n");
exit(1);
}
/* handle command line options */
void parse_args(int argc, char **argv)
{
const char *flags = "f?n:c:p:h";
int c;
while ((c = getopt(argc, argv, flags)) != EOF) {
switch (c) {
case 'n': /* roger wilco */
printf("seconds: %s\n",argv[optind-1]);
break;
case 'c': /* command to run with exec */
command = argv[optind-1];
break;
case 'h':
line=TIOCM_CTS;
break;
case 'p':
device=argv[optind-1];
break;
case '?':
usage();
break;
}
}
}
/* main program */
int main(int argc, char *argv[])
{
int fd; /* for serial device */
int status; /* status of system calls */
unsigned int old_status = 1; /* value of previous call, presume it was in */
unsigned int new_status = 0; /* value of previous call */
unsigned int arg; /* value returned by ioctl */
/* parse command line arguments */
parse_args(argc, argv);
/* looking for $PILOTPORT */
if (getenv("PILOTPORT") != NULL)
device=getenv("PILOTPORT");
/* open port */
printf("autopilot: opening %s\n",device);
fd = open(device, O_RDONLY);
if (fd == -1) {
char s[255];
snprintf(s, 255,"autopilot: can't open device, check your symlink `%s'", device);
perror(s);
exit(1);
}
if (!command) {
fprintf(stderr,"You must specify a command to run with the -c option.\n");
usage();
exit(1);
}
printf("autopilot: launching..\n\n");
/* loop forever */
if (fork() == 0) {
for (;;) {
/* get serial status info */
status = ioctl(fd, TIOCMGET, &arg);
if (status != 0) {
perror("autopilot: TIOCMGET failed");
exit(1);
}
new_status=!!(arg & line);
/* check if the thing has been inserted */
/* exec an app to handle that */
if( (new_status != old_status) && (old_status == 0) ) {
if (system(command) == -1) {
fprintf(stderr,"autopilot: Error running %s, please check it and try again\n",command);
exit(1);
}
}
old_status=new_status;
sleep(defaultDelay);
}
}
return 0;
}
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