/**
*Do initialization of various data needed for
*network interface management.
*This function also tries to set up the given interfaces.
*
*@return the number of interfaces configured
*/
int
olsr_init_interfacedb(void)
{
struct olsr_if *tmp_if;
/* Initial values */
ifnet = NULL;
/*
* Get some cookies for getting stats to ease troubleshooting.
*/
interface_poll_timer_cookie = olsr_alloc_cookie("Interface Polling", OLSR_COOKIE_TYPE_TIMER);
hello_gen_timer_cookie = olsr_alloc_cookie("Hello Generation", OLSR_COOKIE_TYPE_TIMER);
tc_gen_timer_cookie = olsr_alloc_cookie("TC Generation", OLSR_COOKIE_TYPE_TIMER);
mid_gen_timer_cookie = olsr_alloc_cookie("MID Generation", OLSR_COOKIE_TYPE_TIMER);
hna_gen_timer_cookie = olsr_alloc_cookie("HNA Generation", OLSR_COOKIE_TYPE_TIMER);
OLSR_PRINTF(1, "\n ---- Interface configuration ---- \n\n");
/* Run trough all interfaces immedeatly */
for (tmp_if = olsr_cnf->interfaces; tmp_if != NULL; tmp_if = tmp_if->next) {
if (!tmp_if->host_emul) {
if (!olsr_cnf->host_emul) /* XXX: TEMPORARY! */
chk_if_up(tmp_if, 1);
} else {
add_hemu_if(tmp_if);
}
}
/* Kick a periodic timer for the network interface update function */
olsr_start_timer((unsigned int)olsr_cnf->nic_chgs_pollrate * MSEC_PER_SEC, 5, OLSR_TIMER_PERIODIC, &check_interface_updates, NULL,
interface_poll_timer_cookie);
return (ifnet == NULL) ? 0 : 1;
}
/**
* Init datastructures for maintaining timers.
*/
void
olsr_init_timers(void)
{
int idx;
OLSR_PRINTF(3, "Initializing scheduler.\n");
/* Grab initial timestamp */
if (gettimeofday(&first_tv, NULL)) {
olsr_exit("OS clock is not working, have to shut down OLSR", 1);
}
last_tv = first_tv;
now_times = olsr_times();
for (idx = 0; idx < TIMER_WHEEL_SLOTS; idx++) {
list_head_init(&timer_wheel[idx]);
}
/*
* Reset the last timer run.
*/
timer_last_run = now_times;
/* Allocate a cookie for the block based memeory manager. */
timer_mem_cookie = olsr_alloc_cookie("timer_entry", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(timer_mem_cookie, sizeof(struct timer_entry));
}
/**
* Initialize the routingtree and kernel change queues.
*/
void
olsr_init_routing_table(void)
{
OLSR_PRINTF(5, "RIB: init routing tree\n");
/* the routing tree */
avl_init(&routingtree, avl_comp_prefix_default);
routingtree_version = 0;
/*
* Get some cookies for memory stats and memory recycling.
*/
rt_mem_cookie = olsr_alloc_cookie("rt_entry", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(rt_mem_cookie, sizeof(struct rt_entry));
rtp_mem_cookie = olsr_alloc_cookie("rt_path", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(rtp_mem_cookie, sizeof(struct rt_path));
}
/**
* Initialize the HNA set
*/
int
olsr_init_hna_set(void)
{
int idx;
for (idx = 0; idx < HASHSIZE; idx++) {
hna_set[idx].next = &hna_set[idx];
hna_set[idx].prev = &hna_set[idx];
}
hna_net_timer_cookie = olsr_alloc_cookie("HNA Network", OLSR_COOKIE_TYPE_TIMER);
hna_net_mem_cookie = olsr_alloc_cookie("hna_net", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(hna_net_mem_cookie, sizeof(struct hna_net));
hna_entry_mem_cookie = olsr_alloc_cookie("hna_entry", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(hna_entry_mem_cookie, sizeof(struct hna_entry));
return 1;
}
/**
* Initialize the topology set
*
*/
void
olsr_init_tc(void)
{
OLSR_PRINTF(5, "TC: init topo\n");
avl_init(&tc_tree, avl_comp_default);
/*
* Get some cookies for getting stats to ease troubleshooting.
*/
tc_edge_gc_timer_cookie = olsr_alloc_cookie("TC edge GC", OLSR_COOKIE_TYPE_TIMER);
tc_validity_timer_cookie = olsr_alloc_cookie("TC validity", OLSR_COOKIE_TYPE_TIMER);
tc_edge_mem_cookie = olsr_alloc_cookie("tc_edge_entry", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(tc_edge_mem_cookie, sizeof(struct tc_edge_entry) + active_lq_handler->tc_lq_size);
tc_mem_cookie = olsr_alloc_cookie("tc_entry", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(tc_mem_cookie, sizeof(struct tc_entry));
/*
* Add a TC entry for ourselves.
*/
tc_myself = olsr_add_tc_entry(&olsr_cnf->main_addr);
}
int olsr_os_init_iptunnel(const char * dev) {
tunnel_cookie = olsr_alloc_cookie("iptunnel", OLSR_COOKIE_TYPE_MEMORY);
olsr_cookie_set_memory_size(tunnel_cookie, sizeof(struct olsr_iptunnel_entry));
avl_init(&tunnel_tree, avl_comp_default);
store_iptunnel_state = olsr_if_isup(dev);
if (store_iptunnel_state) {
return 0;
}
if (olsr_if_set_state(dev, true)) {
return -1;
}
return olsr_os_ifip(if_nametoindex(dev), &olsr_cnf->main_addr, true);
}
int main(int argc, char *argv[]) {
struct if_config_options *default_ifcnf;
char conf_file_name[FILENAME_MAX];
struct ipaddr_str buf;
bool loadedConfig = false;
int i;
#ifdef LINUX_NETLINK_ROUTING
struct interface *ifn;
#endif
#ifdef WIN32
WSADATA WsaData;
size_t len;
#endif
/* paranoia checks */
assert(sizeof(uint8_t) == 1);
assert(sizeof(uint16_t) == 2);
assert(sizeof(uint32_t) == 4);
assert(sizeof(int8_t) == 1);
assert(sizeof(int16_t) == 2);
assert(sizeof(int32_t) == 4);
printf("\n *** %s ***\n Build date: %s on %s\n http://www.olsr.org\n\n",
olsrd_version, build_date, build_host);
if (argc == 2) {
if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "/?") == 0) {
print_usage(false);
exit(0);
}
if (strcmp(argv[1], "-v") == 0) {
exit(0);
}
}
debug_handle = stdout;
#ifndef WIN32
olsr_argv = argv;
#endif
setbuf(stdout, NULL);
setbuf(stderr, NULL);
#ifndef WIN32
/* Check if user is root */
if (geteuid()) {
fprintf(stderr, "You must be root(uid = 0) to run olsrd!\nExiting\n\n");
exit(EXIT_FAILURE);
}
#else
DisableIcmpRedirects();
if (WSAStartup(0x0202, &WsaData)) {
fprintf(stderr, "Could not initialize WinSock.\n");
olsr_exit(__func__, EXIT_FAILURE);
}
#endif
/* Open syslog */
olsr_openlog("olsrd");
/* Using PID as random seed */
srandom(getpid());
/* Init widely used statics */
memset(&all_zero, 0, sizeof(union olsr_ip_addr));
/*
* Set configfile name and
* check if a configfile name was given as parameter
*/
#ifdef WIN32
#ifndef WINCE
GetWindowsDirectory(conf_file_name, FILENAME_MAX - 11);
#else
conf_file_name[0] = 0;
#endif
len = strlen(conf_file_name);
if (len == 0 || conf_file_name[len - 1] != '\\')
conf_file_name[len++] = '\\';
strscpy(conf_file_name + len, "olsrd.conf", sizeof(conf_file_name) - len);
#else
strscpy(conf_file_name, OLSRD_GLOBAL_CONF_FILE, sizeof(conf_file_name));
#endif
olsr_cnf = olsrd_get_default_cnf();
for (i=1; i < argc-1;) {
if (strcmp(argv[i], "-f") == 0) {
loadedConfig = true;
if (olsrmain_load_config(argv[i+1]) < 0) {
exit(EXIT_FAILURE);
}
if (i+2 < argc) {
memmove(&argv[i], &argv[i+2], sizeof(*argv) * (argc-i-1));
}
argc -= 2;
}
else {
i++;
}
}
/*
* set up configuration prior to processing commandline options
*/
if (!loadedConfig && olsrmain_load_config(conf_file_name) == 0) {
loadedConfig = true;
}
if (!loadedConfig) {
olsrd_free_cnf(olsr_cnf);
olsr_cnf = olsrd_get_default_cnf();
}
default_ifcnf = get_default_if_config();
if (default_ifcnf == NULL) {
fprintf(stderr, "No default ifconfig found!\n");
exit(EXIT_FAILURE);
}
/* Initialize timers */
olsr_init_timers();
/*
* Process olsrd options.
*/
if (olsr_process_arguments(argc, argv, olsr_cnf, default_ifcnf) < 0) {
print_usage(true);
olsr_exit(__func__, EXIT_FAILURE);
}
/*
* Set configuration for command-line specified interfaces
*/
set_default_ifcnfs(olsr_cnf->interfaces, default_ifcnf);
/* free the default ifcnf */
free(default_ifcnf);
/* Sanity check configuration */
if (olsrd_sanity_check_cnf(olsr_cnf) < 0) {
fprintf(stderr, "Bad configuration!\n");
olsr_exit(__func__, EXIT_FAILURE);
}
/*
* Establish file lock to prevent multiple instances
*/
if (olsr_cnf->lock_file) {
strscpy(lock_file_name, olsr_cnf->lock_file, sizeof(lock_file_name));
} else {
size_t l;
#ifdef DEFAULT_LOCKFILE_PREFIX
strscpy(lock_file_name, DEFAULT_LOCKFILE_PREFIX, sizeof(lock_file_name));
#else
strscpy(lock_file_name, conf_file_name, sizeof(lock_file_name));
#endif
l = strlen(lock_file_name);
snprintf(&lock_file_name[l], sizeof(lock_file_name) - l, "-ipv%d.lock",
olsr_cnf->ip_version == AF_INET ? 4 : 6);
}
/*
* Print configuration
*/
if (olsr_cnf->debug_level > 1) {
olsrd_print_cnf(olsr_cnf);
}
def_timer_ci = olsr_alloc_cookie("Default Timer Cookie", OLSR_COOKIE_TYPE_TIMER);
/*
* socket for ioctl calls
*/
olsr_cnf->ioctl_s = socket(olsr_cnf->ip_version, SOCK_DGRAM, 0);
if (olsr_cnf->ioctl_s < 0) {
#ifndef WIN32
olsr_syslog(OLSR_LOG_ERR, "ioctl socket: %m");
#endif
olsr_exit(__func__, 0);
}
#ifdef LINUX_NETLINK_ROUTING
olsr_cnf->rtnl_s = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
if (olsr_cnf->rtnl_s < 0) {
olsr_syslog(OLSR_LOG_ERR, "rtnetlink socket: %m");
olsr_exit(__func__, 0);
}
fcntl(olsr_cnf->rtnl_s, F_SETFL, O_NONBLOCK);
if ((olsr_cnf->rt_monitor_socket = rtnetlink_register_socket(RTMGRP_LINK)) < 0) {
olsr_syslog(OLSR_LOG_ERR, "rtmonitor socket: %m");
olsr_exit(__func__, 0);
}
#endif
/*
* create routing socket
*/
#if defined __FreeBSD__ || __FreeBSD_kernel__ || defined __MacOSX__ || defined __NetBSD__ || defined __OpenBSD__
olsr_cnf->rts = socket(PF_ROUTE, SOCK_RAW, 0);
if (olsr_cnf->rts < 0) {
olsr_syslog(OLSR_LOG_ERR, "routing socket: %m");
olsr_exit(__func__, 0);
}
#endif
#ifdef LINUX_NETLINK_ROUTING
/* initialize gateway system */
if (olsr_cnf->smart_gw_active) {
if (olsr_init_gateways()) {
olsr_exit("Cannot initialize gateway tunnels", 1);
}
}
/* initialize niit if index */
if (olsr_cnf->use_niit) {
olsr_init_niit();
}
#endif
/* Init empty TC timer */
set_empty_tc_timer(GET_TIMESTAMP(0));
/* enable ip forwarding on host */
/* Disable redirects globally */
#ifndef WIN32
net_os_set_global_ifoptions();
#endif
/* Initialize parser */
olsr_init_parser();
/* Initialize route-exporter */
olsr_init_export_route();
/* Initialize message sequencnumber */
init_msg_seqno();
/* Initialize dynamic willingness calculation */
olsr_init_willingness();
/*
*Set up willingness/APM
*/
if (olsr_cnf->willingness_auto) {
if (apm_init() < 0) {
OLSR_PRINTF(1, "Could not read APM info - setting default willingness(%d)\n", WILL_DEFAULT);
olsr_syslog(OLSR_LOG_ERR,
"Could not read APM info - setting default willingness(%d)\n",
WILL_DEFAULT);
olsr_cnf->willingness_auto = 0;
olsr_cnf->willingness = WILL_DEFAULT;
} else {
olsr_cnf->willingness = olsr_calculate_willingness();
OLSR_PRINTF(1, "Willingness set to %d - next update in %.1f secs\n", olsr_cnf->willingness, olsr_cnf->will_int);
}
}
/* Initialize net */
init_net();
/* Initializing networkinterfaces */
if (!olsr_init_interfacedb()) {
if (olsr_cnf->allow_no_interfaces) {
fprintf(
stderr,
"No interfaces detected! This might be intentional, but it also might mean that your configuration is fubar.\nI will continue after 5 seconds...\n");
olsr_startup_sleep(5);
} else {
fprintf(stderr, "No interfaces detected!\nBailing out!\n");
olsr_exit(__func__, EXIT_FAILURE);
}
}
olsr_do_startup_sleep();
/* Print heartbeat to stdout */
#if !defined WINCE
if (olsr_cnf->debug_level > 0 && isatty(STDOUT_FILENO)) {
olsr_start_timer(STDOUT_PULSE_INT, 0, OLSR_TIMER_PERIODIC,
&generate_stdout_pulse, NULL, 0);
}
#endif
/* Initialize the IPC socket */
if (olsr_cnf->ipc_connections > 0) {
ipc_init();
}
/* Initialisation of different tables to be used. */
olsr_init_tables();
/* daemon mode */
#ifndef WIN32
if (olsr_cnf->debug_level == 0 && !olsr_cnf->no_fork) {
printf("%s detaching from the current process...\n", olsrd_version);
if (daemon(0, 0) < 0) {
printf("daemon(3) failed: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
}
#endif
/*
* Create locking file for olsrd, will be cleared after olsrd exits
*/
for (i=5; i>=0; i--) {
OLSR_PRINTF(3, "Trying to get olsrd lock...\n");
if (olsr_create_lock_file(i > 0) == 0) {
/* lock sucessfully created */
break;
}
sleep (1);
}
/* Load plugins */
olsr_load_plugins();
OLSR_PRINTF(1, "Main address: %s\n\n", olsr_ip_to_string(&buf, &olsr_cnf->main_addr));
#ifdef LINUX_NETLINK_ROUTING
/* create policy routing priorities if necessary */
if (DEF_RT_NONE != olsr_cnf->rt_table_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version,
olsr_cnf->rt_table, olsr_cnf->rt_table_pri, NULL, true);
}
if (DEF_RT_NONE != olsr_cnf->rt_table_tunnel_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version,
olsr_cnf->rt_table_tunnel, olsr_cnf->rt_table_tunnel_pri, NULL, true);
}
if (DEF_RT_NONE != olsr_cnf->rt_table_default_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version,
olsr_cnf->rt_table_default, olsr_cnf->rt_table_default_pri, NULL, true);
}
/* OLSR sockets */
if (DEF_RT_NONE != olsr_cnf->rt_table_defaultolsr_pri) {
for (ifn = ifnet; ifn; ifn = ifn->int_next) {
olsr_os_policy_rule(olsr_cnf->ip_version, olsr_cnf->rt_table_default,
olsr_cnf->rt_table_defaultolsr_pri, ifn->int_name, true);
}
}
/* trigger gateway selection */
if (olsr_cnf->smart_gw_active) {
olsr_trigger_inetgw_startup();
}
/* trigger niit static route setup */
if (olsr_cnf->use_niit) {
olsr_setup_niit_routes();
}
/* create lo:olsr interface */
if (olsr_cnf->use_src_ip_routes) {
olsr_os_localhost_if(&olsr_cnf->main_addr, true);
}
#endif
/* Start syslog entry */
olsr_syslog(OLSR_LOG_INFO, "%s successfully started", olsrd_version);
/*
*signal-handlers
*/
/* ctrl-C and friends */
#ifdef WIN32
#ifndef WINCE
SetConsoleCtrlHandler(SignalHandler, true);
#endif
#else
signal(SIGHUP, olsr_reconfigure);
signal(SIGINT, olsr_shutdown);
signal(SIGQUIT, olsr_shutdown);
signal(SIGILL, olsr_shutdown);
signal(SIGABRT, olsr_shutdown);
// signal(SIGSEGV, olsr_shutdown);
signal(SIGTERM, olsr_shutdown);
signal(SIGPIPE, SIG_IGN);
// Ignoring SIGUSR1 and SIGUSR1 by default to be able to use them in plugins
signal(SIGUSR1, SIG_IGN);
signal(SIGUSR2, SIG_IGN);
#endif
link_changes = false;
/* Starting scheduler */
olsr_scheduler();
/* Like we're ever going to reach this ;-) */
return 1;
} /* main */