void monitor_agents()
{
char **cr_agents;
char **av_agents;
av_agents = get_agents(GA_ACTIVE);
/* No agent saved */
if(!mond.agents)
{
mond.agents = av_agents;
return;
}
/* Checking if any of the previous available agents
* are disconnected.
*/
cr_agents = mond.agents;
while(*cr_agents)
{
int available = 0;
char **tmp_av;
tmp_av = av_agents;
while(tmp_av && *tmp_av)
{
if(strcmp(*cr_agents, *tmp_av) == 0)
{
available = 1;
break;
}
tmp_av++;
}
/* Agent disconnected */
if(available == 0)
{
char str[OS_SIZE_1024 +1];
/* Sending disconnected message */
snprintf(str, OS_SIZE_1024 -1, OS_AG_DISCON, *cr_agents);
if(SendMSG(mond.a_queue, str, ARGV0,
LOCALFILE_MQ) < 0)
{
merror(QUEUE_SEND, ARGV0);
}
}
cr_agents++;
}
/* Removing old agent list and adding currently one */
free_agents(mond.agents);
mond.agents = av_agents;
return;
}
int main(int argc, char* argv[]) {
char *mapPath, *agentPath; //The location of the files
int rows, cols, maxSteps; //Dimensions of the map and the max steps
char** map; //Character map
//Check the command line args
if (argc != 4) {
handler_exit(1);
}
mapPath = argv[1];
agentPath = argv[3];
long tempL;
char** tempP = NULL;
tempL = strtol(argv[2], tempP, 10);
if (tempL < 1 || tempL > INT_MAX) {
handler_exit(2);
}
//Set variables needed later in the program - max steps, map and agents
maxSteps = (int)tempL;
map = open_map_file(mapPath, &rows, &cols);
get_num_agents(agentPath);
agents = (AgentData *)malloc(sizeof(AgentData)*numAgents);
get_agents(agentPath, rows, cols);
//Set up signal handling
signal(SIGINT, sig_handler);
signal(SIGCHLD, sig_handler);
//Start agents
start_agents(rows, cols, map);
//Start the game
for (int i = 0; i < maxSteps; i++) {
//Let each agent take turns, process their move and print the map
for(int j = 0; j < numAgents; j++) {
agent_move(j);
check_move(map, j, rows, cols);
print_map(map, rows, cols);
}
}
//No agent succeeded with given steps
handler_exit(10);
}
/** main **/
int main(int argc, char **argv)
{
char *dir = DEFAULTDIR;
char *group = GROUPGLOBAL;
char *user = USER;
char *msg;
char **agent_list;
int gid;
int uid;
int flag = 0;
/* Setting the name */
OS_SetName(ARGV0);
/* user arguments */
if(argc < 2)
{
helpmsg();
}
/* Getting the group name */
gid = Privsep_GetGroup(group);
uid = Privsep_GetUser(user);
if(gid < 0)
{
ErrorExit(USER_ERROR, ARGV0, user, group);
}
/* Setting the group */
if(Privsep_SetGroup(gid) < 0)
{
ErrorExit(SETGID_ERROR,ARGV0, group);
}
/* Chrooting to the default directory */
if(Privsep_Chroot(dir) < 0)
{
ErrorExit(CHROOT_ERROR, ARGV0, dir);
}
/* Inside chroot now */
nowChroot();
/* Setting the user */
if(Privsep_SetUser(uid) < 0)
{
ErrorExit(SETUID_ERROR, ARGV0, user);
}
/* User options */
if(strcmp(argv[1], "-h") == 0)
{
helpmsg();
}
else if(strcmp(argv[1], "-a") == 0)
{
flag = GA_ALL;
msg = "is available.";
}
else if(strcmp(argv[1], "-c") == 0)
{
flag = GA_ACTIVE;
msg = "is active.";
}
else if(strcmp(argv[1], "-n") == 0)
{
flag = GA_NOTACTIVE;
msg = "is not active.";
}
else
{
printf("\n** Invalid option '%s'.\n", argv[1]);
helpmsg();
}
agent_list = get_agents(flag);
if(agent_list)
{
char **agent_list_pt = agent_list;
while(*agent_list)
{
printf("%s %s\n", *agent_list, msg);
agent_list++;
}
free_agents(agent_list_pt);
}
else
{
printf("** No agent available.\n");
}
return(0);
}
