From 6ab8b360a505c90f14057260433ee4e86cf0d962 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@anytun.org>
Date: Wed, 31 Dec 2008 18:24:39 +0000
Subject: removed useless malloc for seq_window_t

---
 src/seq_window.c | 21 ++++++++-------------
 src/seq_window.h |  4 ++--
 src/uanytun.c    | 10 +++++-----
 3 files changed, 15 insertions(+), 20 deletions(-)

diff --git a/src/seq_window.c b/src/seq_window.c
index f5c0bf8..df5f9d9 100644
--- a/src/seq_window.c
+++ b/src/seq_window.c
@@ -41,25 +41,23 @@
 
 #include <stdio.h>
 
-void seq_win_init(seq_win_t** win, window_size_t size)
+int seq_win_init(seq_win_t* win, window_size_t size)
 {
   if(!win)
-    return;
+    return -1;
 
-  *win = malloc(sizeof(seq_win_t));
-  if(!*win)
-    return;
+  win->size_ = size;
+  win->first_ = NULL;
 
-  (*win)->size_ = size;
-  (*win)->first_ = NULL;
+  return 0;
 }
 
-void seq_win_clear(seq_win_t** win)
+void seq_win_clear(seq_win_t* win)
 {
-  if(!win || !(*win))
+  if(!win)
     return;
 
-  seq_win_element_t* ptr = (*win)->first_;
+  seq_win_element_t* ptr = win->first_;
   while(ptr) {
     seq_win_element_t* to_free = ptr;
     ptr = ptr->next_;
@@ -68,9 +66,6 @@ void seq_win_clear(seq_win_t** win)
 
     free(to_free);
   }
-
-  free(*win);
-  *win = NULL;
 }
 
 seq_win_element_t* seq_win_new_element(sender_id_t sender_id, seq_nr_t max, window_size_t size)
diff --git a/src/seq_window.h b/src/seq_window.h
index 9832372..7855594 100644
--- a/src/seq_window.h
+++ b/src/seq_window.h
@@ -50,8 +50,8 @@ struct seq_win_struct {
 };
 typedef struct seq_win_struct seq_win_t;
 
-void seq_win_init(seq_win_t** win, window_size_t size);
-void seq_win_clear(seq_win_t** win);
+int seq_win_init(seq_win_t* win, window_size_t size);
+void seq_win_clear(seq_win_t* win);
 seq_win_element_t* seq_win_new_element(sender_id_t sender_id, seq_nr_t max, window_size_t size);
 int seq_win_check_and_add(seq_win_t* win, sender_id_t sender_id, seq_nr_t seq_nr);
 
diff --git a/src/uanytun.c b/src/uanytun.c
index c2f5585..26f4bea 100644
--- a/src/uanytun.c
+++ b/src/uanytun.c
@@ -76,11 +76,11 @@ int main_loop(tun_device_t* dev, udp_socket_t* sock, options_t* opt)
     return_value = ret;
   }
 
-  seq_win_t* seq_win;
-  seq_win_init(&seq_win, opt->seq_window_size_);
-  if(!seq_win) {
+  seq_win_t seq_win;
+  ret = seq_win_init(&seq_win, opt->seq_window_size_);
+  if(ret) {
     printf("could not initialize sequence window");
-    return_value = -1;
+    return_value = ret;
   }
 
   while(!return_value) {
@@ -146,7 +146,7 @@ int main_loop(tun_device_t* dev, udp_socket_t* sock, options_t* opt)
       if(encrypted_packet_get_mux(&encrypted_packet) != opt->mux_)
         continue;
       
-      int result = seq_win_check_and_add(seq_win, encrypted_packet_get_sender_id(&encrypted_packet), encrypted_packet_get_seq_nr(&encrypted_packet));
+      int result = seq_win_check_and_add(&seq_win, encrypted_packet_get_sender_id(&encrypted_packet), encrypted_packet_get_seq_nr(&encrypted_packet));
       if(result > 0) {
         log_printf(WARNING, "detected replay attack, discarding packet");
         continue;
-- 
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