Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 216 insertions, 0 deletions

diff --git a/chrome/plugin/plugin_channel_base.cc b/chrome/plugin/plugin_channel_base.cc
new file mode 100644
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--- /dev/null
+++ b/chrome/plugin/plugin_channel_base.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <hash_map>
+#include <windows.h>
+
+#include "chrome/plugin/plugin_channel_base.h"
+
+#include "chrome/common/ipc_sync_message.h"
+
+typedef stdext::hash_map<std::wstring, scoped_refptr<PluginChannelBase> >
+    PluginChannelMap;
+
+static PluginChannelMap g_plugin_channels_;
+
+
+PluginChannelBase* PluginChannelBase::GetChannel(
+    const std::wstring& channel_name, IPC::Channel::Mode mode,
+    PluginChannelFactory factory, MessageLoop* ipc_message_loop,
+    bool create_pipe_now) {
+  scoped_refptr<PluginChannelBase> channel;
+
+  PluginChannelMap::const_iterator iter = g_plugin_channels_.find(channel_name);
+  if (iter == g_plugin_channels_.end()) {
+    channel = factory();
+  } else {
+    channel = iter->second;
+  }
+
+  DCHECK(channel != NULL);
+
+  if (!channel->channel_valid()) {
+    channel->channel_name_ = channel_name;
+    channel->mode_ = mode;
+    if (channel->Init(ipc_message_loop, create_pipe_now)) {
+      g_plugin_channels_[channel_name] = channel;
+    } else {
+      channel = NULL;
+    }
+  }
+
+  return channel;
+}
+
+PluginChannelBase::PluginChannelBase()
+    : plugin_count_(0),
+      peer_pid_(0),
+      in_remove_route_(false),
+      channel_valid_(false),
+      in_dispatch_(0),
+      send_unblocking_only_during_dispatch_(false) {
+}
+
+PluginChannelBase::~PluginChannelBase() {
+}
+
+void PluginChannelBase::CleanupChannels() {
+  // Make a copy of the references as we can't iterate the map since items will
+  // be removed from it as we clean them up.
+  std::vector<scoped_refptr<PluginChannelBase>> channels;
+  for (PluginChannelMap::const_iterator iter = g_plugin_channels_.begin();
+       iter != g_plugin_channels_.end();
+       ++iter) {
+    channels.push_back(iter->second);
+  }
+
+  for (size_t i = 0; i < channels.size(); ++i)
+    channels[i]->CleanUp();
+
+  // This will clean up channels added to the map for which subsequent
+  // AddRoute wasn't called
+  g_plugin_channels_.clear();
+}
+
+bool PluginChannelBase::Init(MessageLoop* ipc_message_loop,
+                             bool create_pipe_now) {
+  channel_.reset(new IPC::SyncChannel(channel_name_, mode_, this,
+                                      ipc_message_loop, create_pipe_now));
+  channel_valid_ = true;
+  return true;
+}
+
+bool PluginChannelBase::Send(IPC::Message* message) {
+  if (!channel_.get()) {
+    delete message;
+    return false;
+  }
+
+  if (send_unblocking_only_during_dispatch_ && in_dispatch_ == 0 &&
+      message->is_sync()) {
+    message->set_unblock(false);
+  }
+
+  return channel_->Send(message);
+}
+
+int PluginChannelBase::Count() {
+  return static_cast<int>(g_plugin_channels_.size());
+}
+
+void PluginChannelBase::OnMessageReceived(const IPC::Message& message) {
+  // This call might cause us to be deleted, so keep an extra reference to
+  // ourself so that we can send the reply and decrement back in_dispatch_.
+  scoped_refptr<PluginChannelBase> me(this);
+
+  in_dispatch_++;
+  if (message.routing_id() == MSG_ROUTING_CONTROL) {
+    OnControlMessageReceived(message);
+  } else {
+    bool routed = router_.RouteMessage(message);
+    if (!routed && message.is_sync()) {
+      // The listener has gone away, so we must respond or else the caller will
+      // hang waiting for a reply.
+      IPC::Message* reply = IPC::SyncMessage::GenerateReply(&message);
+      reply->set_reply_error();
+      Send(reply);
+    }
+  }
+  in_dispatch_--;
+}
+
+void PluginChannelBase::OnChannelConnected(int32 peer_pid) {
+  peer_pid_ = peer_pid;
+}
+
+void PluginChannelBase::AddRoute(int route_id,
+                                 IPC::Channel::Listener* listener,
+                                 bool npobject) {
+  if (npobject) {
+    npobject_listeners_[route_id] = listener;
+  } else {
+    plugin_count_++;
+  }
+
+  router_.AddRoute(route_id, listener);
+}
+
+void PluginChannelBase::RemoveRoute(int route_id) {
+  router_.RemoveRoute(route_id);
+
+  ListenerMap::iterator iter = npobject_listeners_.find(route_id);
+  if (iter != npobject_listeners_.end()) {
+    // This was an NPObject proxy or stub, it's not involved in the refcounting.
+
+    // If this RemoveRoute call from the NPObject is a result of us calling
+    // OnChannelError below, don't call erase() here because that'll corrupt
+    // the iterator below.
+    if (!in_remove_route_)
+      npobject_listeners_.erase(iter);
+
+    return;
+  }
+
+  plugin_count_--;
+  DCHECK(plugin_count_ >= 0);
+
+  if (!plugin_count_) {
+    ListenerMap::iterator npobj_iter = npobject_listeners_.begin();
+    in_remove_route_ = true;
+    while (npobj_iter != npobject_listeners_.end()) {
+      npobj_iter->second->OnChannelError();
+      npobj_iter++;
+    }
+    in_remove_route_ = false;
+
+    PluginChannelMap::iterator iter = g_plugin_channels_.begin();
+    while (iter != g_plugin_channels_.end()) {
+      if (iter->second == this) {
+        g_plugin_channels_.erase(iter);
+        return;
+      }
+
+      iter++;
+    }
+
+    NOTREACHED();
+  }
+}
+
+void PluginChannelBase::OnControlMessageReceived(const IPC::Message& msg) {
+  NOTREACHED() << "should override in subclass if you care about control messages";
+}
+
+void PluginChannelBase::OnChannelError() {
+  channel_valid_ = false;
+}
+
+void PluginChannelBase::SendUnblockingOnlyDuringDispatch() {
+  send_unblocking_only_during_dispatch_ = true;
+}