thread-safe crypto: hook initialization into server code

ref #157

src/knot/main.c

@@ -54,6 +54,13 @@ char *zone = NULL;
 // Cleanup handler
 static int do_cleanup(server_t *server, char *configf, char *pidf);
 
+// atexit() handler for server code
+static void deinit(void)
+{
+	knot_crypto_cleanup();
+	knot_crypto_cleanup_threads();
+}
+
 // SIGINT signal handler
 void interrupt_handle(int s)
 {
@@ -100,7 +107,7 @@ void help(void)
 
 int main(int argc, char **argv)
 {
-	atexit(knot_crypto_cleanup);
+	atexit(deinit);
 
 	// Parse command line arguments
 	int c = 0, li = 0;
@@ -167,6 +174,10 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
+	// Initialize cryptographic backend
+	knot_crypto_init();
+	knot_crypto_init_threads();
+
 	// Now check if we want to daemonize
 	if (daemonize) {
 		if (daemon(1, 0) != 0) {

src/knot/server/server.c

@@ -352,8 +352,6 @@ server_t *server_create()
 		return NULL;
 	}
 	knot_ns_set_data(server->nameserver, server);
-	dbg_server("server: initializing crypto backend\n");
-	knot_crypto_init();
 
 	// Create XFR handler
 	server->xfr = xfr_create(XFR_THREADS_COUNT, server->nameserver);