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/**
* args.c
* Routines for processing command-line arguments.
*
* Matej Pfajfar <mp292@cam.ac.uk>
*/
/*
* Changes :
* $Log$
* Revision 1.1 2002/06/26 22:45:50 arma
* Initial revision
*
* Revision 1.3 2002/01/27 00:42:50 mp292
* Reviewed according to Secure-Programs-HOWTO.
*
* Revision 1.2 2002/01/04 10:05:28 badbytes
* Completed.
*
* Revision 1.1 2002/01/03 10:23:43 badbytes
* Code based on that in op. Needs to be modified.
*/
#include "or.h"
/* prints help on using or */
void print_usage()
{
char *program = "or";
printf("\n%s - Onion Router.\nUsage : %s -f config [-l loglevel -h]\n-h : display this help\n-f config : config file\n-l loglevel : logging threshold; one of alert|crit|err|warning|notice|info|debug\n\n", program,program);
}
/* get command-line arguments */
int getargs(int argc,char *argv[], char *args, char **conf_filename, int *loglevel)
{
char c; /* next option character */
int gotf=0;
if ((!args) || (!conf_filename) || (!loglevel))
return -1;
while ((c = getopt(argc,argv,args)) != -1)
{
switch(c)
{
case 'f': /* config file */
*conf_filename = optarg;
gotf=1;
break;
case 'h':
print_usage(argv[0]);
exit(0);
case 'l':
if (!strcmp(optarg,"emerg"))
*loglevel = LOG_EMERG;
else if (!strcmp(optarg,"alert"))
*loglevel = LOG_ALERT;
else if (!strcmp(optarg,"crit"))
*loglevel = LOG_CRIT;
else if (!strcmp(optarg,"err"))
*loglevel = LOG_ERR;
else if (!strcmp(optarg,"warning"))
*loglevel = LOG_WARNING;
else if (!strcmp(optarg,"notice"))
*loglevel = LOG_NOTICE;
else if (!strcmp(optarg,"info"))
*loglevel = LOG_INFO;
else if (!strcmp(optarg,"debug"))
*loglevel = LOG_DEBUG;
else
{
log(LOG_ERR,"Error : argument to -l must be one of alert|crit|err|warning|notice|info|debug.");
print_usage(argv[0]);
return -1;
}
break;
case '?':
if (isprint(c))
log(LOG_ERR,"Missing argument or unknown option '-%c'. See help (-h).",optopt);
else
log(LOG_ERR,"Unknown option character 'x%x'. See help (-h).",optopt);
print_usage(argv[0]);
return -1;
break;
default:
return -1;
}
}
/* the -f option is mandatory */
if (!gotf)
{
log(LOG_ERR,"You must specify a config file with the -f option. See help (-h).");
return -1;
}
return 0;
}
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