Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.

BUG=N/A
R=andrew@webrtc.org, wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12199004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/base/sslstreamadapter.cc

@@ -0,0 +1,77 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif  // HAVE_CONFIG_H
+
+#include "webrtc/base/sslstreamadapter.h"
+#include "webrtc/base/sslconfig.h"
+
+#if SSL_USE_SCHANNEL
+
+// SChannel support for DTLS and peer-to-peer mode are not
+// done.
+#elif SSL_USE_OPENSSL  // && !SSL_USE_SCHANNEL
+
+#include "webrtc/base/opensslstreamadapter.h"
+
+#elif SSL_USE_NSS      // && !SSL_USE_SCHANNEL && !SSL_USE_OPENSSL
+
+#include "webrtc/base/nssstreamadapter.h"
+
+#endif  // !SSL_USE_OPENSSL && !SSL_USE_SCHANNEL && !SSL_USE_NSS
+
+///////////////////////////////////////////////////////////////////////////////
+
+namespace rtc {
+
+SSLStreamAdapter* SSLStreamAdapter::Create(StreamInterface* stream) {
+#if SSL_USE_SCHANNEL
+  return NULL;
+#elif SSL_USE_OPENSSL  // !SSL_USE_SCHANNEL
+  return new OpenSSLStreamAdapter(stream);
+#elif SSL_USE_NSS     //  !SSL_USE_SCHANNEL && !SSL_USE_OPENSSL
+  return new NSSStreamAdapter(stream);
+#else  // !SSL_USE_SCHANNEL && !SSL_USE_OPENSSL && !SSL_USE_NSS
+  return NULL;
+#endif
+}
+
+// Note: this matches the logic above with SCHANNEL dominating
+#if SSL_USE_SCHANNEL
+bool SSLStreamAdapter::HaveDtls() { return false; }
+bool SSLStreamAdapter::HaveDtlsSrtp() { return false; }
+bool SSLStreamAdapter::HaveExporter() { return false; }
+#elif SSL_USE_OPENSSL
+bool SSLStreamAdapter::HaveDtls() {
+  return OpenSSLStreamAdapter::HaveDtls();
+}
+bool SSLStreamAdapter::HaveDtlsSrtp() {
+  return OpenSSLStreamAdapter::HaveDtlsSrtp();
+}
+bool SSLStreamAdapter::HaveExporter() {
+  return OpenSSLStreamAdapter::HaveExporter();
+}
+#elif SSL_USE_NSS
+bool SSLStreamAdapter::HaveDtls() {
+  return NSSStreamAdapter::HaveDtls();
+}
+bool SSLStreamAdapter::HaveDtlsSrtp() {
+  return NSSStreamAdapter::HaveDtlsSrtp();
+}
+bool SSLStreamAdapter::HaveExporter() {
+  return NSSStreamAdapter::HaveExporter();
+}
+#endif  // !SSL_USE_SCHANNEL && !SSL_USE_OPENSSL && !SSL_USE_NSS
+
+///////////////////////////////////////////////////////////////////////////////
+
+}  // namespace rtc