purge nss files and dependencies

webrtc/base/nssstreamadapter.cc

Index: webrtc/base/nssstreamadapter.cc
diff --git a/webrtc/base/nssstreamadapter.cc b/webrtc/base/nssstreamadapter.cc
deleted file mode 100644
index 2e78adfc0e2ae9ec994c63d6ccd9018067c5eca1..0000000000000000000000000000000000000000
--- a/webrtc/base/nssstreamadapter.cc
+++ /dev/null
@@ -1,1127 +0,0 @@
-/*
- *  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.
- */
-
-#include <vector>
-
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif  // HAVE_CONFIG_H
-
-#if HAVE_NSS_SSL_H
-
-#include "webrtc/base/nssstreamadapter.h"
-
-#include "keyhi.h"
-#include "nspr.h"
-#include "nss.h"
-#include "pk11pub.h"
-#include "secerr.h"
-
-#ifdef NSS_SSL_RELATIVE_PATH
-#include "ssl.h"
-#include "sslerr.h"
-#include "sslproto.h"
-#else
-#include "net/third_party/nss/ssl/ssl.h"
-#include "net/third_party/nss/ssl/sslerr.h"
-#include "net/third_party/nss/ssl/sslproto.h"
-#endif
-
-#include "webrtc/base/nssidentity.h"
-#include "webrtc/base/safe_conversions.h"
-#include "webrtc/base/thread.h"
-
-namespace rtc {
-
-PRDescIdentity NSSStreamAdapter::nspr_layer_identity = PR_INVALID_IO_LAYER;
-
-#define UNIMPLEMENTED \
-  PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); \
-  LOG(LS_ERROR) \
-  << "Call to unimplemented function "<< __FUNCTION__; ASSERT(false)
-
-#ifdef SRTP_AES128_CM_HMAC_SHA1_80
-#define HAVE_DTLS_SRTP
-#endif
-
-#ifdef HAVE_DTLS_SRTP
-// SRTP cipher suite table
-struct SrtpCipherMapEntry {
-  const char* external_name;
-  PRUint16 cipher_id;
-};
-
-// This isn't elegant, but it's better than an external reference
-static const SrtpCipherMapEntry kSrtpCipherMap[] = {
-  {"AES_CM_128_HMAC_SHA1_80", SRTP_AES128_CM_HMAC_SHA1_80 },
-  {"AES_CM_128_HMAC_SHA1_32", SRTP_AES128_CM_HMAC_SHA1_32 },
-  {NULL, 0}
-};
-#endif
-
-// Ciphers to enable to get ECDHE encryption with endpoints that support it.
-static const uint32_t kEnabledCiphers[] = {
-    TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-    TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-    TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
-    TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256};
-
-// Default cipher used between NSS stream adapters.
-// This needs to be updated when the default of the SSL library changes.
-static const char kDefaultSslCipher10[] =
-    "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA";
-static const char kDefaultSslCipher12[] =
-    "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256";
-static const char kDefaultSslEcCipher10[] =
-    "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA";
-static const char kDefaultSslEcCipher12[] =
-    "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256";
-
-// Implementation of NSPR methods
-static PRStatus StreamClose(PRFileDesc *socket) {
-  ASSERT(!socket->lower);
-  socket->dtor(socket);
-  return PR_SUCCESS;
-}
-
-static PRInt32 StreamRead(PRFileDesc *socket, void *buf, PRInt32 length) {
-  StreamInterface *stream = reinterpret_cast<StreamInterface *>(socket->secret);
-  size_t read;
-  int error;
-  StreamResult result = stream->Read(buf, length, &read, &error);
-  if (result == SR_SUCCESS) {
-    return checked_cast<PRInt32>(read);
-  }
-
-  if (result == SR_EOS) {
-    return 0;
-  }
-
-  if (result == SR_BLOCK) {
-    PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
-    return -1;
-  }
-
-  PR_SetError(PR_UNKNOWN_ERROR, error);
-  return -1;
-}
-
-static PRInt32 StreamWrite(PRFileDesc *socket, const void *buf,
-                           PRInt32 length) {
-  StreamInterface *stream = reinterpret_cast<StreamInterface *>(socket->secret);
-  size_t written;
-  int error;
-  StreamResult result = stream->Write(buf, length, &written, &error);
-  if (result == SR_SUCCESS) {
-    return checked_cast<PRInt32>(written);
-  }
-
-  if (result == SR_BLOCK) {
-    LOG(LS_INFO) <<
-        "NSSStreamAdapter: write to underlying transport would block";
-    PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
-    return -1;
-  }
-
-  LOG(LS_ERROR) << "Write error";
-  PR_SetError(PR_UNKNOWN_ERROR, error);
-  return -1;
-}
-
-static PRInt32 StreamAvailable(PRFileDesc *socket) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-PRInt64 StreamAvailable64(PRFileDesc *socket) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRStatus StreamSync(PRFileDesc *socket) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PROffset32 StreamSeek(PRFileDesc *socket, PROffset32 offset,
-                             PRSeekWhence how) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PROffset64 StreamSeek64(PRFileDesc *socket, PROffset64 offset,
-                               PRSeekWhence how) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRStatus StreamFileInfo(PRFileDesc *socket, PRFileInfo *info) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRStatus StreamFileInfo64(PRFileDesc *socket, PRFileInfo64 *info) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRInt32 StreamWritev(PRFileDesc *socket, const PRIOVec *iov,
-                     PRInt32 iov_size, PRIntervalTime timeout) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRStatus StreamConnect(PRFileDesc *socket, const PRNetAddr *addr,
-                              PRIntervalTime timeout) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRFileDesc *StreamAccept(PRFileDesc *sd, PRNetAddr *addr,
-                                PRIntervalTime timeout) {
-  UNIMPLEMENTED;
-  return NULL;
-}
-
-static PRStatus StreamBind(PRFileDesc *socket, const PRNetAddr *addr) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRStatus StreamListen(PRFileDesc *socket, PRIntn depth) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRStatus StreamShutdown(PRFileDesc *socket, PRIntn how) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-// Note: this is always nonblocking and ignores the timeout.
-// TODO(ekr@rtfm.com): In future verify that the socket is
-// actually in non-blocking mode.
-// This function does not support peek.
-static PRInt32 StreamRecv(PRFileDesc *socket, void *buf, PRInt32 amount,
-                   PRIntn flags, PRIntervalTime to) {
-  ASSERT(flags == 0);
-
-  if (flags != 0) {
-    PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
-    return -1;
-  }
-
-  return StreamRead(socket, buf, amount);
-}
-
-// Note: this is always nonblocking and assumes a zero timeout.
-// This function does not support peek.
-static PRInt32 StreamSend(PRFileDesc *socket, const void *buf,
-                          PRInt32 amount, PRIntn flags,
-                          PRIntervalTime to) {
-  ASSERT(flags == 0);
-
-  return StreamWrite(socket, buf, amount);
-}
-
-static PRInt32 StreamRecvfrom(PRFileDesc *socket, void *buf,
-                              PRInt32 amount, PRIntn flags,
-                              PRNetAddr *addr, PRIntervalTime to) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRInt32 StreamSendto(PRFileDesc *socket, const void *buf,
-                            PRInt32 amount, PRIntn flags,
-                            const PRNetAddr *addr, PRIntervalTime to) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRInt16 StreamPoll(PRFileDesc *socket, PRInt16 in_flags,
-                          PRInt16 *out_flags) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRInt32 StreamAcceptRead(PRFileDesc *sd, PRFileDesc **nd,
-                                PRNetAddr **raddr,
-                                void *buf, PRInt32 amount, PRIntervalTime t) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRInt32 StreamTransmitFile(PRFileDesc *sd, PRFileDesc *socket,
-                                  const void *headers, PRInt32 hlen,
-                                  PRTransmitFileFlags flags, PRIntervalTime t) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRStatus StreamGetPeerName(PRFileDesc *socket, PRNetAddr *addr) {
-  // TODO(ekr@rtfm.com): Modify to return unique names for each channel
-  // somehow, as opposed to always the same static address. The current
-  // implementation messes up the session cache, which is why it's off
-  // elsewhere
-  addr->inet.family = PR_AF_INET;
-  addr->inet.port = 0;
-  addr->inet.ip = 0;
-
-  return PR_SUCCESS;
-}
-
-static PRStatus StreamGetSockName(PRFileDesc *socket, PRNetAddr *addr) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRStatus StreamGetSockOption(PRFileDesc *socket, PRSocketOptionData *opt) {
-  switch (opt->option) {
-    case PR_SockOpt_Nonblocking:
-      opt->value.non_blocking = PR_TRUE;
-      return PR_SUCCESS;
-    default:
-      UNIMPLEMENTED;
-      break;
-  }
-
-  return PR_FAILURE;
-}
-
-// Imitate setting socket options. These are mostly noops.
-static PRStatus StreamSetSockOption(PRFileDesc *socket,
-                                    const PRSocketOptionData *opt) {
-  switch (opt->option) {
-    case PR_SockOpt_Nonblocking:
-      return PR_SUCCESS;
-    case PR_SockOpt_NoDelay:
-      return PR_SUCCESS;
-    default:
-      UNIMPLEMENTED;
-      break;
-  }
-
-  return PR_FAILURE;
-}
-
-static PRInt32 StreamSendfile(PRFileDesc *out, PRSendFileData *in,
-                              PRTransmitFileFlags flags, PRIntervalTime to) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static PRStatus StreamConnectContinue(PRFileDesc *socket, PRInt16 flags) {
-  UNIMPLEMENTED;
-  return PR_FAILURE;
-}
-
-static PRIntn StreamReserved(PRFileDesc *socket) {
-  UNIMPLEMENTED;
-  return -1;
-}
-
-static const struct PRIOMethods nss_methods = {
-  PR_DESC_LAYERED,
-  StreamClose,
-  StreamRead,
-  StreamWrite,
-  StreamAvailable,
-  StreamAvailable64,
-  StreamSync,
-  StreamSeek,
-  StreamSeek64,
-  StreamFileInfo,
-  StreamFileInfo64,
-  StreamWritev,
-  StreamConnect,
-  StreamAccept,
-  StreamBind,
-  StreamListen,
-  StreamShutdown,
-  StreamRecv,
-  StreamSend,
-  StreamRecvfrom,
-  StreamSendto,
-  StreamPoll,
-  StreamAcceptRead,
-  StreamTransmitFile,
-  StreamGetSockName,
-  StreamGetPeerName,
-  StreamReserved,
-  StreamReserved,
-  StreamGetSockOption,
-  StreamSetSockOption,
-  StreamSendfile,
-  StreamConnectContinue,
-  StreamReserved,
-  StreamReserved,
-  StreamReserved,
-  StreamReserved
-};
-
-NSSStreamAdapter::NSSStreamAdapter(StreamInterface *stream)
-    : SSLStreamAdapterHelper(stream),
-      ssl_fd_(NULL),
-      cert_ok_(false) {
-}
-
-bool NSSStreamAdapter::Init() {
-  if (nspr_layer_identity == PR_INVALID_IO_LAYER) {
-    nspr_layer_identity = PR_GetUniqueIdentity("nssstreamadapter");
-  }
-  PRFileDesc *pr_fd = PR_CreateIOLayerStub(nspr_layer_identity, &nss_methods);
-  if (!pr_fd)
-    return false;
-  pr_fd->secret = reinterpret_cast<PRFilePrivate *>(stream());
-
-  PRFileDesc *ssl_fd;
-  if (ssl_mode_ == SSL_MODE_DTLS) {
-    ssl_fd = DTLS_ImportFD(NULL, pr_fd);
-  } else {
-    ssl_fd = SSL_ImportFD(NULL, pr_fd);
-  }
-  ASSERT(ssl_fd != NULL);  // This should never happen
-  if (!ssl_fd) {
-    PR_Close(pr_fd);
-    return false;
-  }
-
-  SECStatus rv;
-  // Turn on security.
-  rv = SSL_OptionSet(ssl_fd, SSL_SECURITY, PR_TRUE);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error enabling security on SSL Socket";
-    return false;
-  }
-
-  // Disable SSLv2.
-  rv = SSL_OptionSet(ssl_fd, SSL_ENABLE_SSL2, PR_FALSE);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error disabling SSL2";
-    return false;
-  }
-
-  // Disable caching.
-  // TODO(ekr@rtfm.com): restore this when I have the caching
-  // identity set.
-  rv = SSL_OptionSet(ssl_fd, SSL_NO_CACHE, PR_TRUE);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error disabling cache";
-    return false;
-  }
-
-  // Disable session tickets.
-  rv = SSL_OptionSet(ssl_fd, SSL_ENABLE_SESSION_TICKETS, PR_FALSE);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error enabling tickets";
-    return false;
-  }
-
-  // Disable renegotiation.
-  rv = SSL_OptionSet(ssl_fd, SSL_ENABLE_RENEGOTIATION,
-                     SSL_RENEGOTIATE_NEVER);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error disabling renegotiation";
-    return false;
-  }
-
-  // Disable false start.
-  rv = SSL_OptionSet(ssl_fd, SSL_ENABLE_FALSE_START, PR_FALSE);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error disabling false start";
-    return false;
-  }
-
-  // Disable reusing of ECDHE keys. By default NSS, when in server mode, uses
-  // the same key for multiple connections, so disable this behaviour to get
-  // ephemeral keys.
-  rv = SSL_OptionSet(ssl_fd, SSL_REUSE_SERVER_ECDHE_KEY, PR_FALSE);
-  if (rv != SECSuccess) {
-    LOG(LS_ERROR) << "Error disabling ECDHE key reuse";
-    return false;
-  }
-
-  ssl_fd_ = ssl_fd;
-
-  return true;
-}
-
-NSSStreamAdapter::~NSSStreamAdapter() {
-  if (ssl_fd_)
-    PR_Close(ssl_fd_);
-};
-
-
-int NSSStreamAdapter::BeginSSL() {
-  SECStatus rv;
-
-  if (!Init()) {
-    Error("Init", -1, false);
-    return -1;
-  }
-
-  ASSERT(state_ == SSL_CONNECTING);
-  // The underlying stream has been opened. If we are in peer-to-peer mode
-  // then a peer certificate must have been specified by now.
-  ASSERT(!ssl_server_name_.empty() ||
-         peer_certificate_.get() != NULL ||
-         !peer_certificate_digest_algorithm_.empty());
-  LOG(LS_INFO) << "BeginSSL: "
-               << (!ssl_server_name_.empty() ? ssl_server_name_ :
-                                               "with peer");
-
-  if (role_ == SSL_CLIENT) {
-    LOG(LS_INFO) << "BeginSSL: as client";
-
-    rv = SSL_GetClientAuthDataHook(ssl_fd_, GetClientAuthDataHook,
-                                   this);
-    if (rv != SECSuccess) {
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-  } else {
-    LOG(LS_INFO) << "BeginSSL: as server";
-    NSSIdentity *identity;
-
-    if (identity_.get()) {
-      identity = static_cast<NSSIdentity *>(identity_.get());
-    } else {
-      LOG(LS_ERROR) << "Can't be an SSL server without an identity";
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-    rv = SSL_ConfigSecureServer(ssl_fd_, identity->certificate().certificate(),
-                                identity->keypair()->privkey(),
-                                identity->keypair()->ssl_kea_type());
-    if (rv != SECSuccess) {
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-
-    // Insist on a certificate from the client
-    rv = SSL_OptionSet(ssl_fd_, SSL_REQUEST_CERTIFICATE, PR_TRUE);
-    if (rv != SECSuccess) {
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-
-    // TODO(juberti): Check for client_auth_enabled()
-
-    rv = SSL_OptionSet(ssl_fd_, SSL_REQUIRE_CERTIFICATE, PR_TRUE);
-    if (rv != SECSuccess) {
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-  }
-
-  // Set the version range.
-  SSLVersionRange vrange;
-  if (ssl_mode_ == SSL_MODE_DTLS) {
-    vrange.min = SSL_LIBRARY_VERSION_TLS_1_1;
-    switch (ssl_max_version_) {
-      case SSL_PROTOCOL_DTLS_10:
-        vrange.max = SSL_LIBRARY_VERSION_TLS_1_1;
-        break;
-      case SSL_PROTOCOL_DTLS_12:
-      default:
-        vrange.max = SSL_LIBRARY_VERSION_TLS_1_2;
-        break;
-    }
-  } else {
-    // SSL_MODE_TLS
-    vrange.min = SSL_LIBRARY_VERSION_TLS_1_0;
-    switch (ssl_max_version_) {
-      case SSL_PROTOCOL_TLS_10:
-        vrange.max = SSL_LIBRARY_VERSION_TLS_1_0;
-        break;
-      case SSL_PROTOCOL_TLS_11:
-        vrange.max = SSL_LIBRARY_VERSION_TLS_1_1;
-        break;
-      case SSL_PROTOCOL_TLS_12:
-      default:
-        vrange.max = SSL_LIBRARY_VERSION_TLS_1_2;
-        break;
-    }
-  }
-
-  rv = SSL_VersionRangeSet(ssl_fd_, &vrange);
-  if (rv != SECSuccess) {
-    Error("BeginSSL", -1, false);
-    return -1;
-  }
-
-  // SRTP
-#ifdef HAVE_DTLS_SRTP
-  if (!srtp_ciphers_.empty()) {
-    rv = SSL_SetSRTPCiphers(
-        ssl_fd_, &srtp_ciphers_[0],
-        checked_cast<unsigned int>(srtp_ciphers_.size()));
-    if (rv != SECSuccess) {
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-  }
-#endif
-
-  // Enable additional ciphers.
-  for (size_t i = 0; i < ARRAY_SIZE(kEnabledCiphers); i++) {
-    rv = SSL_CipherPrefSet(ssl_fd_, kEnabledCiphers[i], PR_TRUE);
-    if (rv != SECSuccess) {
-      Error("BeginSSL", -1, false);
-      return -1;
-    }
-  }
-
-  // Certificate validation
-  rv = SSL_AuthCertificateHook(ssl_fd_, AuthCertificateHook, this);
-  if (rv != SECSuccess) {
-    Error("BeginSSL", -1, false);
-    return -1;
-  }
-
-  // Now start the handshake
-  rv = SSL_ResetHandshake(ssl_fd_, role_ == SSL_SERVER ? PR_TRUE : PR_FALSE);
-  if (rv != SECSuccess) {
-    Error("BeginSSL", -1, false);
-    return -1;
-  }
-
-  return ContinueSSL();
-}
-
-int NSSStreamAdapter::ContinueSSL() {
-  LOG(LS_INFO) << "ContinueSSL";
-  ASSERT(state_ == SSL_CONNECTING);
-
-  // Clear the DTLS timer
-  Thread::Current()->Clear(this, MSG_DTLS_TIMEOUT);
-
-  SECStatus rv = SSL_ForceHandshake(ssl_fd_);
-
-  if (rv == SECSuccess) {
-    LOG(LS_INFO) << "Handshake complete";
-
-    ASSERT(cert_ok_);
-    if (!cert_ok_) {
-      Error("ContinueSSL", -1, true);
-      return -1;
-    }
-
-    state_ = SSL_CONNECTED;
-    StreamAdapterInterface::OnEvent(stream(), SE_OPEN|SE_READ|SE_WRITE, 0);
-    return 0;
-  }
-
-  PRInt32 err = PR_GetError();
-  switch (err) {
-    case SSL_ERROR_RX_MALFORMED_HANDSHAKE:
-      if (ssl_mode_ != SSL_MODE_DTLS) {
-        Error("ContinueSSL", -1, true);
-        return -1;
-      } else {
-        LOG(LS_INFO) << "Malformed DTLS message. Ignoring.";
-        FALLTHROUGH();  // Fall through
-      }
-    case PR_WOULD_BLOCK_ERROR:
-      LOG(LS_INFO) << "Would have blocked";
-      if (ssl_mode_ == SSL_MODE_DTLS) {
-        PRIntervalTime timeout;
-
-        SECStatus rv = DTLS_GetHandshakeTimeout(ssl_fd_, &timeout);
-        if (rv == SECSuccess) {
-          LOG(LS_INFO) << "Timeout is " << timeout << " ms";
-          Thread::Current()->PostDelayed(PR_IntervalToMilliseconds(timeout),
-                                         this, MSG_DTLS_TIMEOUT, 0);
-        }
-      }
-
-      return 0;
-    default:
-      LOG(LS_INFO) << "Error " << err;
-      break;
-  }
-
-  Error("ContinueSSL", -1, true);
-  return -1;
-}
-
-void NSSStreamAdapter::Cleanup() {
-  if (state_ != SSL_ERROR) {
-    state_ = SSL_CLOSED;
-  }
-
-  if (ssl_fd_) {
-    PR_Close(ssl_fd_);
-    ssl_fd_ = NULL;
-  }
-
-  identity_.reset();
-  peer_certificate_.reset();
-
-  Thread::Current()->Clear(this, MSG_DTLS_TIMEOUT);
-}
-
-bool NSSStreamAdapter::GetDigestLength(const std::string& algorithm,
-                                       size_t* length) {
-  return NSSCertificate::GetDigestLength(algorithm, length);
-}
-
-StreamResult NSSStreamAdapter::Read(void* data, size_t data_len,
-                                    size_t* read, int* error) {
-  // SSL_CONNECTED sanity check.
-  switch (state_) {
-    case SSL_NONE:
-    case SSL_WAIT:
-    case SSL_CONNECTING:
-      return SR_BLOCK;
-
-    case SSL_CONNECTED:
-      break;
-
-    case SSL_CLOSED:
-      return SR_EOS;
-
-    case SSL_ERROR:
-    default:
-      if (error)
-        *error = ssl_error_code_;
-      return SR_ERROR;
-  }
-
-  PRInt32 rv = PR_Read(ssl_fd_, data, checked_cast<PRInt32>(data_len));
-
-  if (rv == 0) {
-    return SR_EOS;
-  }
-
-  // Error
-  if (rv < 0) {
-    PRInt32 err = PR_GetError();
-
-    switch (err) {
-      case PR_WOULD_BLOCK_ERROR:
-        return SR_BLOCK;
-      default:
-        Error("Read", -1, false);
-        *error = err;  // libjingle semantics are that this is impl-specific
-        return SR_ERROR;
-    }
-  }
-
-  // Success
-  *read = rv;
-
-  return SR_SUCCESS;
-}
-
-StreamResult NSSStreamAdapter::Write(const void* data, size_t data_len,
-                                     size_t* written, int* error) {
-  // SSL_CONNECTED sanity check.
-  switch (state_) {
-    case SSL_NONE:
-    case SSL_WAIT:
-    case SSL_CONNECTING:
-      return SR_BLOCK;
-
-    case SSL_CONNECTED:
-      break;
-
-    case SSL_ERROR:
-    case SSL_CLOSED:
-    default:
-      if (error)
-        *error = ssl_error_code_;
-      return SR_ERROR;
-  }
-
-  PRInt32 rv = PR_Write(ssl_fd_, data, checked_cast<PRInt32>(data_len));
-
-  // Error
-  if (rv < 0) {
-    PRInt32 err = PR_GetError();
-
-    switch (err) {
-      case PR_WOULD_BLOCK_ERROR:
-        return SR_BLOCK;
-      default:
-        Error("Write", -1, false);
-        *error = err;  // libjingle semantics are that this is impl-specific
-        return SR_ERROR;
-    }
-  }
-
-  // Success
-  *written = rv;
-
-  return SR_SUCCESS;
-}
-
-void NSSStreamAdapter::OnEvent(StreamInterface* stream, int events,
-                               int err) {
-  int events_to_signal = 0;
-  int signal_error = 0;
-  ASSERT(stream == this->stream());
-  if ((events & SE_OPEN)) {
-    LOG(LS_INFO) << "NSSStreamAdapter::OnEvent SE_OPEN";
-    if (state_ != SSL_WAIT) {
-      ASSERT(state_ == SSL_NONE);
-      events_to_signal |= SE_OPEN;
-    } else {
-      state_ = SSL_CONNECTING;
-      if (int err = BeginSSL()) {
-        Error("BeginSSL", err, true);
-        return;
-      }
-    }
-  }
-  if ((events & (SE_READ|SE_WRITE))) {
-    LOG(LS_INFO) << "NSSStreamAdapter::OnEvent"
-                 << ((events & SE_READ) ? " SE_READ" : "")
-                 << ((events & SE_WRITE) ? " SE_WRITE" : "");
-    if (state_ == SSL_NONE) {
-      events_to_signal |= events & (SE_READ|SE_WRITE);
-    } else if (state_ == SSL_CONNECTING) {
-      if (int err = ContinueSSL()) {
-        Error("ContinueSSL", err, true);
-        return;
-      }
-    } else if (state_ == SSL_CONNECTED) {
-      if (events & SE_WRITE) {
-        LOG(LS_INFO) << " -- onStreamWriteable";
-        events_to_signal |= SE_WRITE;
-      }
-      if (events & SE_READ) {
-        LOG(LS_INFO) << " -- onStreamReadable";
-        events_to_signal |= SE_READ;
-      }
-    }
-  }
-  if ((events & SE_CLOSE)) {
-    LOG(LS_INFO) << "NSSStreamAdapter::OnEvent(SE_CLOSE, " << err << ")";
-    Cleanup();
-    events_to_signal |= SE_CLOSE;
-    // SE_CLOSE is the only event that uses the final parameter to OnEvent().
-    ASSERT(signal_error == 0);
-    signal_error = err;
-  }
-  if (events_to_signal)
-    StreamAdapterInterface::OnEvent(stream, events_to_signal, signal_error);
-}
-
-void NSSStreamAdapter::OnMessage(Message* msg) {
-  // Process our own messages and then pass others to the superclass
-  if (MSG_DTLS_TIMEOUT == msg->message_id) {
-    LOG(LS_INFO) << "DTLS timeout expired";
-    ContinueSSL();
-  } else {
-    StreamInterface::OnMessage(msg);
-  }
-}
-
-// Certificate verification callback. Called to check any certificate
-SECStatus NSSStreamAdapter::AuthCertificateHook(void *arg,
-                                                PRFileDesc *fd,
-                                                PRBool checksig,
-                                                PRBool isServer) {
-  LOG(LS_INFO) << "NSSStreamAdapter::AuthCertificateHook";
-  // SSL_PeerCertificate returns a pointer that is owned by the caller, and
-  // the NSSCertificate constructor copies its argument, so |raw_peer_cert|
-  // must be destroyed in this function.
-  CERTCertificate* raw_peer_cert = SSL_PeerCertificate(fd);
-  NSSCertificate peer_cert(raw_peer_cert);
-  CERT_DestroyCertificate(raw_peer_cert);
-
-  NSSStreamAdapter *stream = reinterpret_cast<NSSStreamAdapter *>(arg);
-  stream->cert_ok_ = false;
-
-  // Read the peer's certificate chain.
-  CERTCertList* cert_list = SSL_PeerCertificateChain(fd);
-  ASSERT(cert_list != NULL);
-
-  // If the peer provided multiple certificates, check that they form a valid
-  // chain as defined by RFC 5246 Section 7.4.2: "Each following certificate
-  // MUST directly certify the one preceding it.".  This check does NOT
-  // verify other requirements, such as whether the chain reaches a trusted
-  // root, self-signed certificates have valid signatures, certificates are not
-  // expired, etc.
-  // Even if the chain is valid, the leaf certificate must still match a
-  // provided certificate or digest.
-  if (!NSSCertificate::IsValidChain(cert_list)) {
-    CERT_DestroyCertList(cert_list);
-    PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
-    return SECFailure;
-  }
-
-  if (stream->peer_certificate_.get()) {
-    LOG(LS_INFO) << "Checking against specified certificate";
-
-    // The peer certificate was specified
-    if (reinterpret_cast<NSSCertificate *>(stream->peer_certificate_.get())->
-        Equals(&peer_cert)) {
-      LOG(LS_INFO) << "Accepted peer certificate";
-      stream->cert_ok_ = true;
-    }
-  } else if (!stream->peer_certificate_digest_algorithm_.empty()) {
-    LOG(LS_INFO) << "Checking against specified digest";
-    // The peer certificate digest was specified
-    unsigned char digest[64];  // Maximum size
-    size_t digest_length;
-
-    if (!peer_cert.ComputeDigest(
-            stream->peer_certificate_digest_algorithm_,
-            digest, sizeof(digest), &digest_length)) {
-      LOG(LS_ERROR) << "Digest computation failed";
-    } else {
-      Buffer computed_digest(digest, digest_length);
-      if (computed_digest == stream->peer_certificate_digest_value_) {
-        LOG(LS_INFO) << "Accepted peer certificate";
-        stream->cert_ok_ = true;
-      }
-    }
-  } else {
-    // Other modes, but we haven't implemented yet
-    // TODO(ekr@rtfm.com): Implement real certificate validation
-    UNIMPLEMENTED;
-  }
-
-  if (!stream->cert_ok_ && stream->ignore_bad_cert()) {
-    LOG(LS_WARNING) << "Ignoring cert error while verifying cert chain";
-    stream->cert_ok_ = true;
-  }
-
-  if (stream->cert_ok_)
-    stream->peer_certificate_.reset(new NSSCertificate(cert_list));
-
-  CERT_DestroyCertList(cert_list);
-
-  if (stream->cert_ok_)
-    return SECSuccess;
-
-  PORT_SetError(SEC_ERROR_UNTRUSTED_CERT);
-  return SECFailure;
-}
-
-
-SECStatus NSSStreamAdapter::GetClientAuthDataHook(void *arg, PRFileDesc *fd,
-                                                  CERTDistNames *caNames,
-                                                  CERTCertificate **pRetCert,
-                                                  SECKEYPrivateKey **pRetKey) {
-  LOG(LS_INFO) << "Client cert requested";
-  NSSStreamAdapter *stream = reinterpret_cast<NSSStreamAdapter *>(arg);
-
-  if (!stream->identity_.get()) {
-    LOG(LS_ERROR) << "No identity available";
-    return SECFailure;
-  }
-
-  NSSIdentity *identity = static_cast<NSSIdentity *>(stream->identity_.get());
-  // Destroyed internally by NSS
-  *pRetCert = CERT_DupCertificate(identity->certificate().certificate());
-  *pRetKey = SECKEY_CopyPrivateKey(identity->keypair()->privkey());
-
-  return SECSuccess;
-}
-
-bool NSSStreamAdapter::GetSslCipher(std::string* cipher) {
-  ASSERT(state_ == SSL_CONNECTED);
-  if (state_ != SSL_CONNECTED)
-    return false;
-
-  SSLChannelInfo channel_info;
-  SECStatus rv = SSL_GetChannelInfo(ssl_fd_, &channel_info,
-                                    sizeof(channel_info));
-  if (rv == SECFailure)
-    return false;
-
-  SSLCipherSuiteInfo ciphersuite_info;
-  rv = SSL_GetCipherSuiteInfo(channel_info.cipherSuite, &ciphersuite_info,
-                              sizeof(ciphersuite_info));
-  if (rv == SECFailure)
-    return false;
-
-  *cipher = ciphersuite_info.cipherSuiteName;
-  return true;
-}
-
-// RFC 5705 Key Exporter
-bool NSSStreamAdapter::ExportKeyingMaterial(const std::string& label,
-                                            const uint8* context,
-                                            size_t context_len,
-                                            bool use_context,
-                                            uint8* result,
-                                            size_t result_len) {
-  SECStatus rv = SSL_ExportKeyingMaterial(
-      ssl_fd_,
-      label.c_str(),
-      checked_cast<unsigned int>(label.size()),
-      use_context,
-      context,
-      checked_cast<unsigned int>(context_len),
-      result,
-      checked_cast<unsigned int>(result_len));
-
-  return rv == SECSuccess;
-}
-
-bool NSSStreamAdapter::SetDtlsSrtpCiphers(
-    const std::vector<std::string>& ciphers) {
-#ifdef HAVE_DTLS_SRTP
-  std::vector<PRUint16> internal_ciphers;
-  if (state_ != SSL_NONE)
-    return false;
-
-  for (std::vector<std::string>::const_iterator cipher = ciphers.begin();
-       cipher != ciphers.end(); ++cipher) {
-    bool found = false;
-    for (const SrtpCipherMapEntry *entry = kSrtpCipherMap; entry->cipher_id;
-         ++entry) {
-      if (*cipher == entry->external_name) {
-        found = true;
-        internal_ciphers.push_back(entry->cipher_id);
-        break;
-      }
-    }
-
-    if (!found) {
-      LOG(LS_ERROR) << "Could not find cipher: " << *cipher;
-      return false;
-    }
-  }
-
-  if (internal_ciphers.empty())
-    return false;
-
-  srtp_ciphers_ = internal_ciphers;
-
-  return true;
-#else
-  return false;
-#endif
-}
-
-bool NSSStreamAdapter::GetDtlsSrtpCipher(std::string* cipher) {
-#ifdef HAVE_DTLS_SRTP
-  ASSERT(state_ == SSL_CONNECTED);
-  if (state_ != SSL_CONNECTED)
-    return false;
-
-  PRUint16 selected_cipher;
-
-  SECStatus rv = SSL_GetSRTPCipher(ssl_fd_, &selected_cipher);
-  if (rv == SECFailure)
-    return false;
-
-  for (const SrtpCipherMapEntry *entry = kSrtpCipherMap;
-       entry->cipher_id; ++entry) {
-    if (selected_cipher == entry->cipher_id) {
-      *cipher = entry->external_name;
-      return true;
-    }
-  }
-
-  ASSERT(false);  // This should never happen
-#endif
-  return false;
-}
-
-
-GlobalLockPod NSSContext::lock;
-NSSContext *NSSContext::global_nss_context;
-
-// Static initialization and shutdown
-NSSContext *NSSContext::Instance() {
-  lock.Lock();
-  if (!global_nss_context) {
-    scoped_ptr<NSSContext> new_ctx(new NSSContext(PK11_GetInternalSlot()));
-    if (new_ctx->slot_)
-      global_nss_context = new_ctx.release();
-  }
-  lock.Unlock();
-
-  return global_nss_context;
-}
-
-bool NSSContext::InitializeSSL(VerificationCallback callback) {
-  ASSERT(!callback);
-
-  static bool initialized = false;
-
-  if (!initialized) {
-    SECStatus rv;
-
-    rv = NSS_NoDB_Init(NULL);
-    if (rv != SECSuccess) {
-      LOG(LS_ERROR) << "Couldn't initialize NSS error=" <<
-          PORT_GetError();
-      return false;
-    }
-
-    NSS_SetDomesticPolicy();
-
-    initialized = true;
-  }
-
-  return true;
-}
-
-bool NSSContext::InitializeSSLThread() {
-  // Not needed
-  return true;
-}
-
-bool NSSContext::CleanupSSL() {
-  // Not needed
-  return true;
-}
-
-bool NSSStreamAdapter::HaveDtls() {
-  return true;
-}
-
-bool NSSStreamAdapter::HaveDtlsSrtp() {
-#ifdef HAVE_DTLS_SRTP
-  return true;
-#else
-  return false;
-#endif
-}
-
-bool NSSStreamAdapter::HaveExporter() {
-  return true;
-}
-
-std::string NSSStreamAdapter::GetDefaultSslCipher(SSLProtocolVersion version,
-                                                  KeyType key_type) {
-  if (key_type == KT_RSA) {
-    switch (version) {
-      case SSL_PROTOCOL_TLS_10:
-      case SSL_PROTOCOL_TLS_11:
-        return kDefaultSslCipher10;
-      case SSL_PROTOCOL_TLS_12:
-      default:
-        return kDefaultSslCipher12;
-    }
-  } else if (key_type == KT_ECDSA) {
-    switch (version) {
-      case SSL_PROTOCOL_TLS_10:
-      case SSL_PROTOCOL_TLS_11:
-        return kDefaultSslEcCipher10;
-      case SSL_PROTOCOL_TLS_12:
-      default:
-        return kDefaultSslEcCipher12;
-    }
-  } else {
-    return std::string();
-  }
-}
-
-}  // namespace rtc
-
-#endif  // HAVE_NSS_SSL_H