/*
* void init_node( int argc, char *argv[] )
*
* Takes care of initializing a node for an IRC server
* from the given command line arguments
*/
void init_node( int argc, char *argv[] )
{
int i;
if( argc < 3 )
{
printf( "%s <nodeID> <config file>\n", argv[0] );
exit( 0 );
}
/* Parse nodeID */
curr_nodeID = atol( argv[1] );
/* Store */
rt_parse_config_file(argv[0], &curr_node_config_file, argv[2] );
/* Get config file for this node */
for( i = 0; i < curr_node_config_file.size; ++i )
if( curr_node_config_file.entries[i].nodeID == curr_nodeID )
curr_node_config_entry = &curr_node_config_file.entries[i];
/* Check to see if nodeID is valid */
if( !curr_node_config_entry )
{
printf( "Invalid NodeID\n" );
exit(1);
}
}
/*
* void init_node( int argc, char *argv[] )
*
* Takes care of initializing a node for an IRC server
* from the given command line arguments
*/
void
init_node(char *nodeID, char *config_file)
{
int i;
curr_nodeID = atol(nodeID);
rt_parse_config_file("sircd", &curr_node_config_file, config_file );
/* Get config file for this node */
for( i = 0; i < curr_node_config_file.size; ++i )
if( curr_node_config_file.entries[i].nodeID == curr_nodeID )
curr_node_config_entry = &curr_node_config_file.entries[i];
/* Check to see if nodeID is valid */
if( !curr_node_config_entry )
{
printf( "Invalid NodeID\n" );
exit(1);
}
}
void rt_parse_command_line(rt_args_t *args, int argc, char *const *argv)
{
int c, i, found, old_optind;
/* set defaults for arguments */
bzero(args, sizeof(rt_args_t));
args->nodeID = (unsigned long)-1;
args->advertisement_cycle_time = 30;
args->neighbor_timeout = 120;
args->retransmission_timeout = 3;
args->lsa_timeout = 120;
/* parse command line */
old_optind = optind;
found = 0;
while ((c = getopt(argc, argv, _rt_optstring)) != -1) {
switch (c) {
case 'i':
parse_long(optarg, &args->nodeID, argv[0], "nodeID");
break;
case 'c':
found = 1;
rt_parse_config_file(argv[0], &args->config_file, optarg);
break;
case 'G':
/* ignore -- this is only for grading */
break;
case 'a':
parse_long(optarg, &args->advertisement_cycle_time, argv[0],
"advertisement_cycle_time");
break;
case 'n':
parse_long(optarg, &args->neighbor_timeout, argv[0],
"neighbor_timeout");
break;
case 'r':
parse_long(optarg, &args->retransmission_timeout, argv[0],
"route_timeout");
break;
case 't':
parse_long(optarg, &args->lsa_timeout, argv[0],
"garbage_collect_timeout");
break;
case '?':
exit(255);
default:
fprintf(stderr, "%s: unknown argument -%c\n", argv[0], (char)c);
exit(255);
break;
}
}
/* validate some of the arguments */
if (args->nodeID == (unsigned long)-1) {
fprintf(stderr, "%s: nodeID must be specified\n", argv[0]);
exit(255);
}
if (args->neighbor_timeout % args->advertisement_cycle_time != 0) {
fprintf(stderr, "%s: warning: neighbor_timeout (%lu) is not a "
"multiple of advertisement_cycle_time (%lu)\n", argv[0],
args->neighbor_timeout, args->advertisement_cycle_time);
}
if (args->lsa_timeout % args->advertisement_cycle_time != 0) {
fprintf(stderr, "%s: warning: lsa_timeout (%lu) is not a "
"multiple of advertisement_cycle_time (%lu)\n", argv[0],
args->lsa_timeout, args->advertisement_cycle_time);
}
if (!found) {
fprintf(stderr, "%s: you must specify a config_file\n", argv[0]);
exit(0);
}
if (args->config_file.size < 2) {
fprintf(stderr, "%s: warning: this node has no neighbors!\n", argv[0]);
}
found = 0;
for (i=0; i<args->config_file.size; i++) {
if (args->config_file.entries[i].nodeID == args->nodeID) {
found = 1;
break;
}
}
if (!found) {
fprintf(stderr, "%s: this node's nodeID (%lu) wasn't in the "
"config file!\n", argv[0], args->nodeID);
exit(255);
}
/* reset optind in case the caller wants to getopt some more */
optind = old_optind;
}
