1 files changed, 118 insertions, 0 deletions
diff --git a/src/listener.c b/src/listener.c
new file mode 100644
index 0000000..4025b26
--- /dev/null
+++ b/src/listener.c
@@ -0,0 +1,118 @@
+/*
+ *  tcpproxy
+ *
+ *  tcpproxy is a simple tcp connection proxy which combines the 
+ *  features of rinetd and 6tunnel. tcpproxy supports IPv4 and 
+ *  IPv6 and also supports connections from IPv6 to IPv4 
+ *  endpoints and vice versa.
+ *  
+ *
+ *  Copyright (C) 2010-2011 Christian Pointner <equinox@spreadspace.org>
+ *                         
+ *  This file is part of tcpproxy.
+ *
+ *  tcpproxy is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  tcpproxy is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with tcpproxy. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "listener.h"
+#include "tcp.h"
+
+void listener_delete_element(void* e)
+{
+  if(!e)
+    return;
+  
+  listener_t* element = (listener_t*)e;
+  close(element->fd_);
+
+  free(e);
+}
+
+int listener_init(listeners_t* list)
+{
+  return slist_init(list, &listener_delete_element);
+}
+
+void listener_clear(listeners_t* list)
+{
+  slist_clear(list);
+}
+
+int listener_add(listeners_t* list, char* laddr, char* lport, char* raddr, char* rport)
+{
+  if(!list)
+    return -1;
+ 
+  listener_t* element = malloc(sizeof(listener_t));
+  if(!element)
+    return -2;
+  
+// TODO: open listen socket and resolv local and remote address
+
+  static int fds = 6;
+
+  element->fd_ = fds++;
+  memset(&(element->local_end_), 0, sizeof(element->local_end_));
+  memset(&(element->remote_end_), 0, sizeof(element->remote_end_));
+
+  if(slist_add(list, element) == NULL)
+    return -2;
+
+  return 0;
+}
+
+void listener_remove(listeners_t* list, int fd)
+{
+  slist_remove(list, listener_find(list, fd));
+}
+
+listener_t* listener_find(listeners_t* list, int fd)
+{
+  if(!list)
+    return NULL;
+
+  slist_element_t* tmp = list->first_;
+  while(tmp) {
+    listener_t* l = (listener_t*)tmp->data_;
+    if(l && l->fd_ == fd)
+      return l;
+    tmp = tmp->next_;
+  }
+
+  return NULL;
+}
+
+void listener_print(listeners_t* list)
+{
+  if(!list)
+    return;
+  
+  slist_element_t* tmp = list->first_;
+  while(tmp) {
+    listener_t* l = (listener_t*)tmp->data_;
+    if(l) {
+      char* ls = tcp_endpoint_to_string(l->local_end_);
+      char* rs = tcp_endpoint_to_string(l->remote_end_);
+      printf("listener #%d: %s -> %s\n", l->fd_, ls ? ls : "(null)", rs ? rs : "(null)");
+      if(ls) free(ls);
+      if(rs) free(rs);
+    }
+    tmp = tmp->next_;
+  }
+}