int main(int argc, char *argv[])
{
struct link *link, *list_port = 0;
char ch;
time_t current;
int is_daemon = 0;
char *pidfile = NULL;
outgoing_host_list = list_create();
debug_config(argv[0]);
while((ch = getopt(argc, argv, "bB:d:hH:l:L:m:M:n:o:O:p:ST:u:U:v")) != (char) -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 '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':
free(debug_filename);
debug_filename = strdup(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;
}
}
if (is_daemon) daemonize(0, pidfile);
debug_config_file(debug_filename);
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_ALL, "*** %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));
update_dgram = datagram_create(port);
if(!update_dgram)
fatal("couldn't listen on udp port %d", port);
outgoing_dgram = datagram_create(0);
if(!outgoing_dgram)
fatal("couldn't create outgoing udp port");
list_port = link_serve(port);
if(!list_port)
fatal("couldn't listen on tcp port %d", 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;
}
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;
}
