From 9ab6316366701dca07e84f1fddacf0308f49bb24 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Tue, 6 Jan 2009 10:26:06 +0000
Subject: cleaned up main_loop a little

---
 src/uanytun.c | 86 +++++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 54 insertions(+), 32 deletions(-)

(limited to 'src/uanytun.c')

diff --git a/src/uanytun.c b/src/uanytun.c
index 051886a..609a873 100644
--- a/src/uanytun.c
+++ b/src/uanytun.c
@@ -93,65 +93,87 @@ int init_libgcrypt()
 #endif
 #endif
 
-int main_loop(tun_device_t* dev, udp_socket_t* sock, options_t* opt)
+#ifndef NO_CRYPT
+int init_main_loop(options_t* opt, cipher_t* c, auth_algo_t* aa, key_derivation_t* kd_in, key_derivation_t* kd_out, seq_win_t* seq_win)
+#else
+int init_main_loop(options_t* opt, cipher_t* c, key_derivation_t* kd_in, key_derivation_t* kd_out, seq_win_t* seq_win)
+#endif
 {
-  log_printf(INFO, "entering main loop");
-
-  plain_packet_t plain_packet;
-  plain_packet_init(&plain_packet);
-  encrypted_packet_t encrypted_packet;
-  encrypted_packet_init(&encrypted_packet);
-  int len = 0;
-  udp_endpoint_t remote;
-  seq_nr_t seq_nr = 0;
-  fd_set readfds;
-
-  cipher_t c;
-  int ret = cipher_init(&c, opt->cipher_);
+  int ret = cipher_init(c, opt->cipher_);
   if(ret) {
     log_printf(ERR, "could not initialize cipher of type %s", opt->cipher_);
     return ret;
   }
   
 #ifndef NO_CRYPT
-  auth_algo_t aa;
-  ret = auth_algo_init(&aa, opt->auth_algo_);
+  ret = auth_algo_init(aa, opt->auth_algo_);
   if(ret) {
     log_printf(ERR, "could not initialize auth algo of type %s", opt->auth_algo_);
-    cipher_close(&c);
+    cipher_close(c);
     return ret;
   }
 
-  key_derivation_t kd_in;
-  ret = key_derivation_init(&kd_in, opt->kd_prf_, opt->ld_kdr_, opt->passphrase_, opt->key_.buf_, opt->key_.length_, opt->salt_.buf_, opt->salt_.length_);
+  ret = key_derivation_init(kd_in, opt->kd_prf_, opt->ld_kdr_, opt->passphrase_, opt->key_.buf_, opt->key_.length_, opt->salt_.buf_, opt->salt_.length_);
   if(ret) {
     log_printf(ERR, "could not initialize inbound key derivation of type %s", opt->kd_prf_);
-    cipher_close(&c);
-    auth_algo_close(&aa);
+    cipher_close(c);
+    auth_algo_close(aa);
     return ret;
   }
 
-  key_derivation_t kd_out;
-  ret = key_derivation_init(&kd_out, opt->kd_prf_, opt->ld_kdr_, opt->passphrase_, opt->key_.buf_, opt->key_.length_, opt->salt_.buf_, opt->salt_.length_);
+  ret = key_derivation_init(kd_out, opt->kd_prf_, opt->ld_kdr_, opt->passphrase_, opt->key_.buf_, opt->key_.length_, opt->salt_.buf_, opt->salt_.length_);
   if(ret) {
     log_printf(ERR, "could not initialize outbound key derivation of type %s", opt->kd_prf_);
-    cipher_close(&c);
-    auth_algo_close(&aa);
-    key_derivation_close(&kd_in);
+    cipher_close(c);
+    auth_algo_close(aa);
+    key_derivation_close(kd_in);
     return ret;
   }
-#else
-  key_derivation_t kd_in, kd_out;
 #endif
 
-  int return_value = 0;
-  seq_win_t seq_win;
-  ret = seq_win_init(&seq_win, opt->seq_window_size_);
+  ret = seq_win_init(seq_win, opt->seq_window_size_);
   if(ret) {
     printf("could not initialize sequence window");
-    return_value = ret;
+    cipher_close(c);
+#ifndef NO_CRYPT
+    auth_algo_close(aa);
+    key_derivation_close(kd_in);
+    key_derivation_close(kd_out);
+#endif
+    return ret;
   }
+  return 0;
+}
 
+int main_loop(tun_device_t* dev, udp_socket_t* sock, options_t* opt)
+{
+  log_printf(INFO, "entering main loop");
+
+  plain_packet_t plain_packet;
+  plain_packet_init(&plain_packet);
+  encrypted_packet_t encrypted_packet;
+  encrypted_packet_init(&encrypted_packet);
+  int len = 0;
+  udp_endpoint_t remote;
+  seq_nr_t seq_nr = 0;
+  fd_set readfds;
+
+  cipher_t c;
+#ifndef NO_CRYPT
+  auth_algo_t aa;
+#endif
+  key_derivation_t kd_in, kd_out;
+  seq_win_t seq_win;
+
+#ifndef NO_CRYPT
+  int ret = init_main_loop(opt, &c, &aa, &kd_in, &kd_out, &seq_win);
+#else
+  int ret = init_main_loop(opt, &c, &kd_in, &kd_out, &seq_win);
+#endif
+  if(ret)
+    return ret;
+
+  int return_value = 0;
   while(!return_value) {
     plain_packet_set_payload_length(&plain_packet, -1);
     encrypted_packet_set_length(&encrypted_packet, -1);
-- 
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