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Unified Diff: webrtc/base/nssstreamadapter.cc

Issue 1351503004: Purge nss files and dependencies. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Created 5 years, 3 months ago
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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
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