struct link *link_serve(int port)
{
return link_serve_address(0, port);
}
int main(int argc, char *argv[])
{
struct link *link, *list_port = 0;
signed char ch;
time_t current;
int is_daemon = 0;
char *pidfile = NULL;
char *interface = NULL;
outgoing_host_list = list_create();
debug_config(argv[0]);
static const struct option long_options[] = {
{"background", no_argument, 0, 'b'},
{"pid-file", required_argument, 0, 'B'},
{"debug", required_argument, 0, 'd'},
{"help", no_argument, 0, 'h'},
{"history", required_argument, 0, 'H'},
{"lifetime", required_argument, 0, 'l'},
{"update-log", required_argument, 0, 'L'},
{"max-jobs", required_argument, 0, 'm'},
{"server-size", required_argument, 0, 'M'},
{"name", required_argument, 0, 'n'},
{"interface", required_argument, 0, 'I'},
{"debug-file", required_argument, 0, 'o'},
{"debug-rotate-max", required_argument, 0, 'O'},
{"port", required_argument, 0, 'p'},
{"single", no_argument, 0, 'S'},
{"timeout", required_argument, 0, 'T'},
{"update-host", required_argument, 0, 'u'},
{"update-interval", required_argument, 0, 'U'},
{"version", no_argument, 0, 'v'},
{"port-file", required_argument, 0, 'Z'},
{0,0,0,0}};
while((ch = getopt_long(argc, argv, "bB:d:hH:I:l:L:m:M:n:o:O:p:ST:u:U:vZ:", long_options, NULL)) > -1) {
switch (ch) {
case 'b':
is_daemon = 1;
break;
case 'B':
free(pidfile);
pidfile = strdup(optarg);
break;
case 'd':
debug_flags_set(optarg);
break;
case 'h':
default:
show_help(argv[0]);
return 1;
case 'l':
lifetime = string_time_parse(optarg);
break;
case 'L':
logfilename = strdup(optarg);
break;
case 'H':
history_dir = strdup(optarg);
break;
case 'I':
free(interface);
interface = strdup(optarg);
break;
case 'm':
child_procs_max = atoi(optarg);
break;
case 'M':
max_server_size = string_metric_parse(optarg);
break;
case 'n':
preferred_hostname = optarg;
break;
case 'o':
debug_config_file(optarg);
break;
case 'O':
debug_config_file_size(string_metric_parse(optarg));
break;
case 'p':
port = atoi(optarg);
break;
case 'S':
fork_mode = 0;
break;
case 'T':
child_procs_timeout = string_time_parse(optarg);
break;
case 'u':
list_push_head(outgoing_host_list, xxstrdup(optarg));
break;
case 'U':
outgoing_timeout = string_time_parse(optarg);
break;
case 'v':
cctools_version_print(stdout, argv[0]);
return 0;
case 'Z':
port_file = optarg;
port = 0;
break;
}
}
if (is_daemon) daemonize(0, pidfile);
cctools_version_debug(D_DEBUG, argv[0]);
if(logfilename) {
logfile = fopen(logfilename,"a");
if(!logfile) fatal("couldn't open %s: %s\n",optarg,strerror(errno));
}
current = time(0);
debug(D_NOTICE, "*** %s starting at %s", argv[0], ctime(¤t));
if(!list_size(outgoing_host_list)) {
list_push_head(outgoing_host_list, CATALOG_HOST_DEFAULT);
}
install_handler(SIGPIPE, ignore_signal);
install_handler(SIGHUP, ignore_signal);
install_handler(SIGCHLD, ignore_signal);
install_handler(SIGINT, shutdown_clean);
install_handler(SIGTERM, shutdown_clean);
install_handler(SIGQUIT, shutdown_clean);
install_handler(SIGALRM, shutdown_clean);
if(!preferred_hostname) {
domain_name_cache_guess(hostname);
preferred_hostname = hostname;
}
username_get(owner);
starttime = time(0);
table = nvpair_database_create(history_dir);
if(!table)
fatal("couldn't create directory %s: %s\n",history_dir,strerror(errno));
list_port = link_serve_address(interface, port);
if(list_port) {
/*
If a port was chosen automatically, read it back
so that the same one can be used for the update port.
There is the possibility that the UDP listen will
fail because that port is in use.
*/
if(port==0) {
char addr[LINK_ADDRESS_MAX];
link_address_local(list_port,addr,&port);
}
} else {
if(interface)
fatal("couldn't listen on TCP address %s port %d", interface, port);
else
fatal("couldn't listen on TCP port %d", port);
}
outgoing_dgram = datagram_create(0);
if(!outgoing_dgram)
fatal("couldn't create outgoing udp port");
update_dgram = datagram_create_address(interface, port);
if(!update_dgram) {
if(interface)
fatal("couldn't listen on UDP address %s port %d", interface, port);
else
fatal("couldn't listen on UDP port %d", port);
}
opts_write_port_file(port_file,port);
while(1) {
fd_set rfds;
int ufd = datagram_fd(update_dgram);
int lfd = link_fd(list_port);
int result, maxfd;
struct timeval timeout;
remove_expired_records();
if(time(0) > outgoing_alarm) {
update_all_catalogs(outgoing_dgram);
outgoing_alarm = time(0) + outgoing_timeout;
}
while(1) {
int status;
pid_t pid = waitpid(-1, &status, WNOHANG);
if(pid>0) {
child_procs_count--;
continue;
} else {
break;
}
}
FD_ZERO(&rfds);
FD_SET(ufd, &rfds);
if(child_procs_count < child_procs_max) {
FD_SET(lfd, &rfds);
}
maxfd = MAX(ufd, lfd) + 1;
timeout.tv_sec = 5;
timeout.tv_usec = 0;
result = select(maxfd, &rfds, 0, 0, &timeout);
if(result <= 0)
continue;
if(FD_ISSET(ufd, &rfds)) {
handle_updates(update_dgram);
}
if(FD_ISSET(lfd, &rfds)) {
link = link_accept(list_port, time(0) + 5);
if(link) {
if(fork_mode) {
pid_t pid = fork();
if(pid == 0) {
alarm(child_procs_timeout);
handle_query(link);
_exit(0);
} else if (pid>0) {
child_procs_count++;
}
} else {
handle_query(link);
}
link_close(link);
}
}
}
return 1;
}
