Revert "Start adding TLS (SSL) sockets to dart:io."

runtime/bin/tls_socket_linux.cc

Index: runtime/bin/tls_socket_linux.cc
diff --git a/runtime/bin/tls_socket_linux.cc b/runtime/bin/tls_socket_linux.cc
deleted file mode 100644
index 13bbe63e90daed98cd186f7ba486e1b54e5797a7..0000000000000000000000000000000000000000
--- a/runtime/bin/tls_socket_linux.cc
+++ /dev/null
@@ -1,130 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#include "bin/tls_socket.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <libgen.h>
-#include <stdio.h>
-
-#include <openssl/ssl.h>
-#include <openssl/bio.h>
-#include <openssl/err.h>
-
-#include "bin/builtin.h"
-
-
-class TlsFilterPlatformData {
- public:
-  SSL* ssl;
-  SSL_CTX* ssl_ctx;
-  BIO* encrypted;
-  BIO* plaintext;
-  BIO* internal;
-};
-
-
-TlsFilter::TlsFilter() : in_handshake_(false) {
-  LockInitMutex();
-  if (!library_initialized_) {
-    InitializeLibrary();
-    library_initialized_ = true;
-  }
-  UnlockInitMutex();
-}
-
-
-void TlsFilter::InitializeLibrary() {
-  SSL_library_init();
-  SSL_load_error_strings();
-  OpenSSL_add_all_algorithms();
-}
-
-
-void TlsFilter::InitializePlatformData() {
-  data_ = new TlsFilterPlatformData;
-  data_->ssl_ctx = SSL_CTX_new(SSLv23_client_method());
-  BIO_new_bio_pair(&(data_->internal), 0, &(data_->encrypted), 0);
-  data_->plaintext = BIO_new_ssl(data_->ssl_ctx, 1);
-  data_->plaintext = BIO_push(data_->plaintext, data_->internal);
-}
-
-
-void TlsFilter::Connect() {
-  int result = BIO_do_handshake(data_->plaintext);
-  if (result == 1) {
-    if (in_handshake_) {
-      HandleError(Dart_InvokeClosure(handshake_finish_, 0, NULL));
-      in_handshake_ = false;
-    }
-  } else if (BIO_should_retry(data_->plaintext)) {
-    if (!in_handshake_) {
-      HandleError(Dart_InvokeClosure(handshake_start_, 0, NULL));
-      in_handshake_ = true;
-    }
-  }
-}
-
-
-void TlsFilter::Destroy() {
-  DestroyPlatformIndependent();
-  // TODO(whesse): Destroy OpenSSL objects here.
-}
-
-
-intptr_t TlsFilter::ProcessBuffer(int buffer_index) {
-  Dart_Handle buffer_object = dart_buffer_objects_[buffer_index];
-  Dart_Handle start_object = HandleError(
-      Dart_GetField(buffer_object, stringStart_));
-  Dart_Handle length_object = HandleError(
-      Dart_GetField(buffer_object, stringLength_));
-  int64_t unsafe_start = DartUtils::GetIntegerValue(start_object);
-  int64_t unsafe_length = DartUtils::GetIntegerValue(length_object);
-  if (unsafe_start < 0 || unsafe_start >= buffer_size_ ||
-      unsafe_length < 0 || unsafe_length > buffer_size_) {
-     Dart_ThrowException(DartUtils::NewDartIllegalArgumentException(
-         "Illegal .start or .length on a _TlsExternalBuffer"));
-  }
-  intptr_t start = static_cast<intptr_t>(unsafe_start);
-  intptr_t length = static_cast<intptr_t>(unsafe_length);
-
-  BIO* bio_stream;
-  if (buffer_index == kReadEncrypted || buffer_index == kWriteEncrypted) {
-    bio_stream = data_->encrypted;
-  } else {
-    bio_stream = data_->plaintext;
-  }
-
-  intptr_t bytes_processed = 0;
-  int bio_bytes = 0;
-  switch (buffer_index) {
-    case kReadPlaintext:
-    case kWriteEncrypted: {
-      // Write from the BIO to the buffer.
-      intptr_t bytes_free = buffer_size_ - start - length;
-      if (bytes_free > 0) {
-        bio_bytes = BIO_read(bio_stream,
-                             buffers_[buffer_index] + start + length,
-                             bytes_free);
-      }
-      break;
-    }
-    case kReadEncrypted:
-    case kWritePlaintext:
-      if (length > 0) {
-        // Call BIO_write.
-        bio_bytes = BIO_write(bio_stream,
-                              buffers_[buffer_index] + start,
-                              length);
-      }
-      break;
-  }
-  if (bio_bytes > 0) {
-          bytes_processed = bio_bytes;
-  }
-  return bytes_processed;
-}