1 files changed, 70 insertions, 0 deletions
diff --git a/src/tcp.c b/src/tcp.c
new file mode 100644
index 0000000..42db969
--- /dev/null
+++ b/src/tcp.c
@@ -0,0 +1,70 @@
+/*
+ *  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 <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+
+#include "datatypes.h"
+
+#include "tcp.h"
+
+char* tcp_endpoint_to_string(tcp_endpoint_t e)
+{
+  void* ptr;
+  u_int16_t port;
+  size_t addrstr_len = 0;
+  char* addrstr, *ret;
+  char addrport_sep = ':';
+  
+  switch(((struct sockaddr *)&e)->sa_family)
+  {
+  case AF_INET:
+    ptr = &((struct sockaddr_in *)&e)->sin_addr;
+    port = ntohs(((struct sockaddr_in *)&e)->sin_port);
+    addrstr_len = INET_ADDRSTRLEN + 1;
+    addrport_sep = ':';
+    break;
+  case AF_INET6:
+    ptr = &((struct sockaddr_in6 *)&e)->sin6_addr;
+    port = ntohs(((struct sockaddr_in6 *)&e)->sin6_port);
+    addrstr_len = INET6_ADDRSTRLEN + 1;
+    addrport_sep = '.';
+    break;
+  default:
+    asprintf(&ret, "unknown address type");
+    return ret;
+  }
+  addrstr = malloc(addrstr_len);
+  if(!addrstr)
+    return NULL;
+  inet_ntop (((struct sockaddr *)&e)->sa_family, ptr, addrstr, addrstr_len);
+  asprintf(&ret, "%s%c%d", addrstr, addrport_sep ,port);
+  free(addrstr);
+  return ret;
+}