/**
* Main function, starts the daemon.
*/
int main(int argc, char *argv[])
{
struct sigaction action;
int group, status = SS_RC_INITIALIZATION_FAILED;
struct utsname utsname;
/* logging for library during initialization, as we have no bus yet */
dbg = dbg_stderr;
/* initialize library */
if (!library_init(NULL, "charon"))
{
library_deinit();
exit(SS_RC_LIBSTRONGSWAN_INTEGRITY);
}
if (lib->integrity &&
!lib->integrity->check_file(lib->integrity, "charon", argv[0]))
{
dbg_stderr(DBG_DMN, 1, "integrity check of charon failed");
library_deinit();
exit(SS_RC_DAEMON_INTEGRITY);
}
if (!libhydra_init())
{
dbg_stderr(DBG_DMN, 1, "initialization failed - aborting charon");
libhydra_deinit();
library_deinit();
exit(SS_RC_INITIALIZATION_FAILED);
}
if (!libcharon_init())
{
dbg_stderr(DBG_DMN, 1, "initialization failed - aborting charon");
goto deinit;
}
/* use CTRL loglevel for default */
for (group = 0; group < DBG_MAX; group++)
{
levels[group] = LEVEL_CTRL;
}
/* handle arguments */
for (;;)
{
struct option long_opts[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' },
{ "use-syslog", no_argument, NULL, 'l' },
/* TODO: handle "debug-all" */
{ "debug-dmn", required_argument, &group, DBG_DMN },
{ "debug-mgr", required_argument, &group, DBG_MGR },
{ "debug-ike", required_argument, &group, DBG_IKE },
{ "debug-chd", required_argument, &group, DBG_CHD },
{ "debug-job", required_argument, &group, DBG_JOB },
{ "debug-cfg", required_argument, &group, DBG_CFG },
{ "debug-knl", required_argument, &group, DBG_KNL },
{ "debug-net", required_argument, &group, DBG_NET },
{ "debug-asn", required_argument, &group, DBG_ASN },
{ "debug-enc", required_argument, &group, DBG_ENC },
{ "debug-tnc", required_argument, &group, DBG_TNC },
{ "debug-imc", required_argument, &group, DBG_IMC },
{ "debug-imv", required_argument, &group, DBG_IMV },
{ "debug-pts", required_argument, &group, DBG_PTS },
{ "debug-tls", required_argument, &group, DBG_TLS },
{ "debug-esp", required_argument, &group, DBG_ESP },
{ "debug-lib", required_argument, &group, DBG_LIB },
{ 0,0,0,0 }
};
int c = getopt_long(argc, argv, "", long_opts, NULL);
switch (c)
{
case EOF:
break;
case 'h':
usage(NULL);
status = 0;
goto deinit;
case 'v':
printf("Linux strongSwan %s\n", VERSION);
status = 0;
goto deinit;
case 'l':
use_syslog = TRUE;
continue;
case 0:
/* option is in group */
levels[group] = atoi(optarg);
continue;
default:
usage("");
status = 1;
goto deinit;
}
break;
}
if (!lookup_uid_gid())
{
dbg_stderr(DBG_DMN, 1, "invalid uid/gid - aborting charon");
goto deinit;
}
charon->load_loggers(charon, levels, !use_syslog);
if (uname(&utsname) != 0)
{
memset(&utsname, 0, sizeof(utsname));
}
DBG1(DBG_DMN, "Starting IKE charon daemon (strongSwan "VERSION", %s %s, %s)",
utsname.sysname, utsname.release, utsname.machine);
if (lib->integrity)
{
DBG1(DBG_DMN, "integrity tests enabled:");
DBG1(DBG_DMN, "lib 'libstrongswan': passed file and segment integrity tests");
DBG1(DBG_DMN, "lib 'libhydra': passed file and segment integrity tests");
DBG1(DBG_DMN, "lib 'libcharon': passed file and segment integrity tests");
DBG1(DBG_DMN, "daemon 'charon': passed file integrity test");
}
/* initialize daemon */
if (!charon->initialize(charon,
lib->settings->get_str(lib->settings, "charon.load", PLUGINS)))
{
DBG1(DBG_DMN, "initialization failed - aborting charon");
goto deinit;
}
lib->plugins->status(lib->plugins, LEVEL_CTRL);
if (check_pidfile())
{
DBG1(DBG_DMN, "charon already running (\""PID_FILE"\" exists)");
goto deinit;
}
if (!lib->caps->drop(lib->caps))
{
DBG1(DBG_DMN, "capability dropping failed - aborting charon");
goto deinit;
}
/* add handler for SEGV and ILL,
* INT, TERM and HUP are handled by sigwaitinfo() in run() */
action.sa_handler = segv_handler;
action.sa_flags = 0;
sigemptyset(&action.sa_mask);
sigaddset(&action.sa_mask, SIGINT);
sigaddset(&action.sa_mask, SIGTERM);
sigaddset(&action.sa_mask, SIGHUP);
sigaction(SIGSEGV, &action, NULL);
sigaction(SIGILL, &action, NULL);
sigaction(SIGBUS, &action, NULL);
action.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &action, NULL);
pthread_sigmask(SIG_SETMASK, &action.sa_mask, NULL);
/* start daemon (i.e. the threads in the thread-pool) */
charon->start(charon);
/* main thread goes to run loop */
run();
/* normal termination, cleanup and exit */
unlink_pidfile();
status = 0;
deinit:
libcharon_deinit();
libhydra_deinit();
library_deinit();
return status;
}
/**
* Main function, starts TKM backend.
*/
int main(int argc, char *argv[])
{
char *dmn_name;
if (argc > 0 && strlen(argv[0]) > 0)
{
dmn_name = basename(argv[0]);
}
else
{
dmn_name = "charon-tkm";
}
/* TKM credential set */
tkm_cred_t *creds;
struct sigaction action;
int status = SS_RC_INITIALIZATION_FAILED;
/* logging for library during initialization, as we have no bus yet */
dbg = dbg_syslog;
/* initialize library */
if (!library_init(NULL, dmn_name))
{
library_deinit();
exit(status);
}
if (!libhydra_init())
{
dbg_syslog(DBG_DMN, 1, "initialization failed - aborting %s", dmn_name);
libhydra_deinit();
library_deinit();
exit(status);
}
if (!libcharon_init())
{
dbg_syslog(DBG_DMN, 1, "initialization failed - aborting %s", dmn_name);
goto deinit;
}
if (!lookup_uid_gid())
{
dbg_syslog(DBG_DMN, 1, "invalid uid/gid - aborting %s", dmn_name);
goto deinit;
}
/* make sure we log to the DAEMON facility by default */
lib->settings->set_int(lib->settings, "%s.syslog.daemon.default",
lib->settings->get_int(lib->settings, "%s.syslog.daemon.default", 1,
dmn_name), dmn_name);
charon->load_loggers(charon, NULL, FALSE);
DBG1(DBG_DMN, "Starting charon with TKM backend (strongSwan "VERSION")");
/* register TKM specific plugins */
static plugin_feature_t features[] = {
PLUGIN_REGISTER(NONCE_GEN, tkm_nonceg_create),
PLUGIN_PROVIDE(NONCE_GEN),
PLUGIN_REGISTER(PUBKEY, tkm_public_key_load, TRUE),
PLUGIN_PROVIDE(PUBKEY, KEY_RSA),
PLUGIN_PROVIDE(PUBKEY_VERIFY, SIGN_RSA_EMSA_PKCS1_SHA1),
PLUGIN_PROVIDE(PUBKEY_VERIFY, SIGN_RSA_EMSA_PKCS1_SHA256),
PLUGIN_CALLBACK(kernel_ipsec_register, tkm_kernel_ipsec_create),
PLUGIN_PROVIDE(CUSTOM, "kernel-ipsec"),
};
lib->plugins->add_static_features(lib->plugins, "tkm-backend", features,
countof(features), TRUE);
if (!register_dh_mapping())
{
DBG1(DBG_DMN, "no DH group mapping defined - aborting %s", dmn_name);
goto deinit;
}
/* register TKM keymat variant */
keymat_register_constructor(IKEV2, (keymat_constructor_t)tkm_keymat_create);
/* initialize daemon */
if (!charon->initialize(charon, PLUGINS))
{
DBG1(DBG_DMN, "initialization failed - aborting %s", dmn_name);
goto deinit;
}
lib->plugins->status(lib->plugins, LEVEL_CTRL);
/* set global pidfile name depending on daemon name */
if (asprintf(&pidfile_name, IPSEC_PIDDIR"/%s.pid", dmn_name) < 0)
{
DBG1(DBG_DMN, "unable to set pidfile name - aborting %s", dmn_name);
goto deinit;
};
if (check_pidfile())
{
DBG1(DBG_DMN, "%s already running (\"%s\" exists)", dmn_name,
pidfile_name);
goto deinit;
}
if (!lib->caps->drop(lib->caps))
{
DBG1(DBG_DMN, "capability dropping failed - aborting %s", dmn_name);
goto deinit;
}
/* initialize TKM client */
if (!tkm_init())
{
DBG1(DBG_DMN, "init of TKM client failed - aborting %s", dmn_name);
goto deinit;
}
/* register TKM authorization hook */
listener = tkm_listener_create();
charon->bus->add_listener(charon->bus, &listener->listener);
/* register TKM credential set */
creds = tkm_cred_create();
lib->credmgr->add_set(lib->credmgr, (credential_set_t*)creds);
/* register TKM credential encoder */
lib->encoding->add_encoder(lib->encoding, tkm_encoder_encode);
/* add handler for SEGV and ILL,
* INT and TERM are handled by sigwait() in run() */
action.sa_handler = segv_handler;
action.sa_flags = 0;
sigemptyset(&action.sa_mask);
sigaddset(&action.sa_mask, SIGINT);
sigaddset(&action.sa_mask, SIGTERM);
sigaction(SIGSEGV, &action, NULL);
sigaction(SIGILL, &action, NULL);
sigaction(SIGBUS, &action, NULL);
action.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &action, NULL);
pthread_sigmask(SIG_SETMASK, &action.sa_mask, NULL);
/* start daemon (i.e. the threads in the thread-pool) */
charon->start(charon);
/* main thread goes to run loop */
run();
unlink_pidfile();
status = 0;
charon->bus->remove_listener(charon->bus, &listener->listener);
listener->destroy(listener);
creds->destroy(creds);
lib->encoding->remove_encoder(lib->encoding, tkm_encoder_encode);
deinit:
destroy_dh_mapping();
libcharon_deinit();
libhydra_deinit();
library_deinit();
tkm_deinit();
return status;
}