From OraWiki
#include <options.h>
#include <stdio.h>
#include <unistd.h>
enum boolean {true, false};
static const char *optString = "i:p:d:hst:o:nc:e:b:?";
void display_usage( void );
void initoptions()
/*
* Set defaults for command line options
*
*/
{
/* Initialize globalArgs before we get to work. */
globalArgs.iniFile = "watchdog.ini";
globalArgs.oneshot = "generic";
globalArgs.http_port = 81;
globalArgs.debug_level = 1;
globalArgs.run_http = 0;
globalArgs.run_daemon = 0;
globalArgs.run_scheduler = 0;
globalArgs.schedule = 120;
globalArgs.httpbase = "/etc/watchdog/htdocs";
globalArgs.cgibase = "/cgi-bin";
globalArgs.index_file = "index.html";
globalArgs.error_file = "/error.html";
}
void getoptions(int argc, char *argv[])
{
enum boolean error=false;
int opt = 0;
initoptions();
opt = getopt( argc, argv, optString );
/*
* Get and check all Arguments as required to get a running programm!
*
*/
while( opt != -1 ) {
switch( opt ) {
case 'b':
globalArgs.httpbase=optarg;
printf("HTTP directory is %s\n",optarg);
break;
case 'c':
globalArgs.cgibase=optarg;
printf("CGI subdirectory is %s\n",optarg);
break;
case 'i':
{
FILE * in=fopen(optarg,"r");
if (in)
{
globalArgs.iniFile = optarg; /* true */
printf("Inififile is %s\n",optarg);
}
else
{
puts( "*******************************************************************");
puts( "*** -i violation. No such file. ***");
puts( "*******************************************************************");
exit( EXIT_FAILURE );
}
}
break;
case 'o':
if (error == false )
{
globalArgs.oneshot = optarg; /* true */
printf("Check only section [%s] of %s\n",optarg, globalArgs.iniFile);
exit (ONE_SHOT);
}
else
{
puts( "*******************************************************************");
puts( "*** -o violation. It's only allowed to use -o and -i together. ***");
puts( "*******************************************************************");
exit( EXIT_FAILURE );
}
break;
case 'p':
globalArgs.http_port = atoi(optarg);
printf("Port is %s\n",optarg);
error=true; /* Don't use this param with -o! */
break;
case 'd':
globalArgs.debug_level = atoi(optarg);
if ((globalArgs.debug_level >-1 & globalArgs.debug_level <6) & ! isalpha(optarg[0]) )
{
printf("Debug level is %d\n",globalArgs.debug_level);
error=true; /* Don't use this param with -o! */
}
else
{
puts( "*******************************************************************");
puts( "*** -d number format violation . [0-5] ***");
puts( "*******************************************************************");
exit( EXIT_FAILURE );
}
break;
case 'h':
globalArgs.run_http=1;
printf("Starting HTTP server\n");
error=true; /* Don't use this param with -o! */
break;
case 's':
globalArgs.run_scheduler=1;
printf("Enabling scheduler\n");
error=true; /* Don't use this param with -o! */
break;
case 't':
globalArgs.schedule= atoi(optarg);
if (globalArgs.schedule >59 & globalArgs.schedule <3601 )
{
printf("Scheduler set to %d seconds\n", globalArgs.schedule);
error=true; /* Don't use this param with -o! */
}
else
{
puts( "*******************************************************************");
puts( "*** -t number format violation . [60-3600] ***");
puts( "*******************************************************************");
exit( EXIT_FAILURE );
}
break;
case '?':
display_usage();
break;
default:
/* You won't actually get here. */
display_usage();
break;
}
opt = getopt( argc, argv, optString );
}
}
void display_usage( void )
{
puts( "*******************************************************************");
puts( "*** Watchdog - High Availability processor ***" );
puts( "*** (c) 1989-2007 OraForecast.com ***" );
puts( "*** ***" );
puts( "*** Gerald.Roehrbein@OraForecast.com ***" );
puts( "*** ***" );
puts( "*** Commandline options ***" );
puts( "*** ***" );
puts( "*** -i <inifile> path and name of Watchdog's ini file ***" );
puts( "*** -p <number> where Watchdog will offer HTTP protocol. ***" );
puts( "*** -d <number> Debuglevel between 0 and 5. ***" );
puts( "*** -h enable HTTP server. ***" );
puts( "*** -s enable scheduler. ***" );
puts( "*** -t check interval. Check delay between 50% and 100% of this ***" );
puts( "*** -n enable daemon mode. Run Watchdog as a background daemon ***" );
puts( "*** -o <section> check one section defined in ini file. ***" );
puts( "*** -? Help ***" );
puts( "*** ***" );
puts( "*** Watchdog executes parameters by their order. ***" );
puts( "*** If you want to start a HTTP server at a different port than ***" );
puts( "*** you have to set the port first. ***" );
puts( "*** If not the server listens at the default port. ***" );
puts( "*** ***" );
puts( "*******************************************************************" );
exit( EXIT_FAILURE );
}
