831c5585c7
This CL adds an API to SSL stream adapters to set the maximum allowed protocol version and with that implements support for DTLS 1.2. With DTLS 1.2 the default cipher changes in the unittests as follows. BoringSSL TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA -> TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 NSS TLS_RSA_WITH_AES_128_CBC_SHA -> TLS_RSA_WITH_AES_128_GCM_SHA256 BUG=chromium:428343 R=juberti@google.com Review URL: https://webrtc-codereview.appspot.com/50989004 Cr-Commit-Position: refs/heads/master@{#9232}
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_BASE_NSSSTREAMADAPTER_H_
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#define WEBRTC_BASE_NSSSTREAMADAPTER_H_
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#include <string>
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#include <vector>
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#include "nspr.h"
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#include "nss.h"
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#include "secmodt.h"
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#include "webrtc/base/buffer.h"
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#include "webrtc/base/criticalsection.h"
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#include "webrtc/base/nssidentity.h"
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#include "webrtc/base/ssladapter.h"
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#include "webrtc/base/sslstreamadapter.h"
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#include "webrtc/base/sslstreamadapterhelper.h"
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namespace rtc {
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// Singleton
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class NSSContext {
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public:
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explicit NSSContext(PK11SlotInfo* slot) : slot_(slot) {}
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~NSSContext() {
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}
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static PK11SlotInfo *GetSlot() {
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return Instance() ? Instance()->slot_: NULL;
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}
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static NSSContext *Instance();
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static bool InitializeSSL(VerificationCallback callback);
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static bool InitializeSSLThread();
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static bool CleanupSSL();
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private:
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PK11SlotInfo *slot_; // The PKCS-11 slot
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static GlobalLockPod lock; // To protect the global context
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static NSSContext *global_nss_context; // The global context
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};
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class NSSStreamAdapter : public SSLStreamAdapterHelper {
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public:
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explicit NSSStreamAdapter(StreamInterface* stream);
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~NSSStreamAdapter() override;
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bool Init();
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StreamResult Read(void* data,
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size_t data_len,
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size_t* read,
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int* error) override;
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StreamResult Write(const void* data,
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size_t data_len,
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size_t* written,
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int* error) override;
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void OnMessage(Message* msg) override;
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bool GetSslCipher(std::string* cipher) override;
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// Key Extractor interface
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bool ExportKeyingMaterial(const std::string& label,
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const uint8* context,
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size_t context_len,
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bool use_context,
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uint8* result,
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size_t result_len) override;
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// DTLS-SRTP interface
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bool SetDtlsSrtpCiphers(const std::vector<std::string>& ciphers) override;
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bool GetDtlsSrtpCipher(std::string* cipher) override;
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// Capabilities interfaces
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static bool HaveDtls();
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static bool HaveDtlsSrtp();
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static bool HaveExporter();
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static std::string GetDefaultSslCipher(SSLProtocolVersion version);
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protected:
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// Override SSLStreamAdapter
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void OnEvent(StreamInterface* stream, int events, int err) override;
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// Override SSLStreamAdapterHelper
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int BeginSSL() override;
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void Cleanup() override;
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bool GetDigestLength(const std::string& algorithm, size_t* length) override;
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private:
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int ContinueSSL();
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static SECStatus AuthCertificateHook(void *arg, PRFileDesc *fd,
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PRBool checksig, PRBool isServer);
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static SECStatus GetClientAuthDataHook(void *arg, PRFileDesc *fd,
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CERTDistNames *caNames,
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CERTCertificate **pRetCert,
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SECKEYPrivateKey **pRetKey);
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PRFileDesc *ssl_fd_; // NSS's SSL file descriptor
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static bool initialized; // Was InitializeSSL() called?
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bool cert_ok_; // Did we get and check a cert
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std::vector<PRUint16> srtp_ciphers_; // SRTP cipher list
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static PRDescIdentity nspr_layer_identity; // The NSPR layer identity
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};
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} // namespace rtc
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#endif // WEBRTC_BASE_NSSSTREAMADAPTER_H_
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