Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_utilities / lib / socks++.cpp

diff --git a/Security/libsecurity_utilities/lib/socks++.cpp b/Security/libsecurity_utilities/lib/socks++.cpp
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+++ b/Security/libsecurity_utilities/lib/socks++.cpp
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+/*
+ * Copyright (c) 2000-2001,2004,2011,2014 Apple Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+//
+// socks - socks version of IP sockets
+//
+// [Also see comments in header file.]
+//
+// This file contains the "generic" Socks functionality.
+// Socks4 and Socks5 implementations are in their separate files.
+//
+#include "socks++.h"
+#include "socks++4.h"
+#include "socks++5.h"
+#include "hosts.h"
+
+
+namespace Security {
+namespace IPPlusPlus {
+
+
+//
+// Static objects
+//
+ModuleNexus<SocksServer::Global> SocksServer::global;
+
+
+//
+// SocksServer destruction
+//
+SocksServer::~SocksServer()
+{ /* virtual */ }
+
+
+//
+// Create a SocksServer object
+//
+SocksServer *SocksServer::make(Version version, const IPSockAddress &addr)
+{
+    switch (version) {
+    case 0:
+        return NULL;           // no socks
+    case 4:
+        return new Socks4::Server(addr);
+    case 5:
+        return new Socks5::Server(addr);
+    default:
+        UnixError::throwMe(EINVAL);
+    }
+}
+
+
+//
+// TCPClientSockets (CONNECT access)
+//    
+void SocksClientSocket::open(const IPSockAddress &peer)
+{
+    if (mServer) {
+        Support::connect(*this, peer);
+        lastConnected(mPeerAddress.address());
+    } else {
+        TCPClientSocket::open(peer);
+    }
+}
+
+void SocksClientSocket::open(const IPAddress &addr, IPPort port)
+{
+    open(IPSockAddress(addr, port));
+}
+
+void SocksClientSocket::open(const Host &host, IPPort port)
+{
+    if (mServer) {
+        Support::connect(*this, host, port);
+        lastConnected(mPeerAddress.address());
+    } else {
+        TCPClientSocket::open(host, port);
+    }
+}
+
+void SocksClientSocket::setFd(int fd, const IPSockAddress &local, const IPSockAddress &peer)
+{
+    Socket::setFd(fd);
+    mLocalAddress = local;
+    mPeerAddress = peer;
+}
+
+
+//
+// TCPServerSockets (BIND access)
+//
+void SocksServerSocket::open(const IPSockAddress &local, int)
+{
+    if (mServer) {
+#if BUG_GCC
+        if (mConnectionPeer)
+            Support::bind(*this, mConnectionPeer, local.port());
+        else
+            Support::bind(*this, lastConnected(), local.port());
+#else
+        Support::bind(*this,
+            mConnectionPeer ? mConnectionPeer : lastConnected(),
+            local.port());
+#endif
+    } else {
+        TCPServerSocket::open(local, 1);
+    }
+}
+
+void SocksServerSocket::receive(SocksClientSocket &client)
+{
+    if (mServer) {
+        Support::receive(*this, client);
+    } else {
+        TCPServerSocket::receive(client);
+    }
+}
+
+
+//
+// Address functions
+//
+IPSockAddress SocksServer::Support::localAddress(const Socket &me) const
+{
+    if (mServer)
+        return mLocalAddress;
+    else
+        return me.localAddress();
+}
+
+IPSockAddress SocksServer::Support::peerAddress(const Socket &me) const
+{
+    if (mServer)
+        return mPeerAddress;
+    else
+        return me.peerAddress();
+}
+
+
+}      // end namespace IPPlusPlus
+}      // end namespace Security