Revert r223494 "Simplify PPB_NetworkMonitor proxy."

content/browser/renderer_host/pepper/pepper_message_filter.cc

Index: content/browser/renderer_host/pepper/pepper_message_filter.cc
diff --git a/content/browser/renderer_host/pepper/pepper_message_filter.cc b/content/browser/renderer_host/pepper/pepper_message_filter.cc
index 6434729b7349de3215d409218e488bcc16632e9a..197a303c332414b088d8414af0de8037f019e6cb 100644
--- a/content/browser/renderer_host/pepper/pepper_message_filter.cc
+++ b/content/browser/renderer_host/pepper/pepper_message_filter.cc
@@ -4,20 +4,32 @@
 
 #include "content/browser/renderer_host/pepper/pepper_message_filter.h"
 
+#include "base/bind.h"
+#include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "content/browser/renderer_host/pepper/pepper_socket_utils.h"
+#include "content/browser/renderer_host/render_process_host_impl.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_client.h"
+#include "ppapi/c/private/ppb_network_list_private.h"
 #include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/shared_impl/api_id.h"
+#include "ppapi/shared_impl/private/net_address_private_impl.h"
 
-namespace content {
+using ppapi::NetAddressPrivateImpl;
 
-PepperMessageFilter::PepperMessageFilter() {}
-PepperMessageFilter::~PepperMessageFilter() {}
+namespace content {
 
 bool PepperMessageFilter::OnMessageReceived(const IPC::Message& msg,
                                             bool* message_was_ok) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(PepperMessageFilter, msg, *message_was_ok)
+    // NetworkMonitor messages.
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBNetworkMonitor_Start,
+                        OnNetworkMonitorStart)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBNetworkMonitor_Stop,
+                        OnNetworkMonitorStop)
+
     // X509 certificate messages.
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBX509Certificate_ParseDER,
                         OnX509CertificateParseDER);
@@ -27,6 +39,41 @@ bool PepperMessageFilter::OnMessageReceived(const IPC::Message& msg,
   return handled;
 }
 
+void PepperMessageFilter::OnIPAddressChanged() {
+  GetAndSendNetworkList();
+}
+
+PepperMessageFilter::PepperMessageFilter(
+    const ppapi::PpapiPermissions& permissions)
+    : permissions_(permissions) {
+}
+
+PepperMessageFilter::~PepperMessageFilter() {
+  if (!network_monitor_ids_.empty())
+    net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
+}
+
+void PepperMessageFilter::OnNetworkMonitorStart(uint32 plugin_dispatcher_id) {
+  // Support all in-process plugins, and ones with "private" permissions.
+  if (!permissions_.HasPermission(ppapi::PERMISSION_PRIVATE))
+    return;
+
+  if (network_monitor_ids_.empty())
+    net::NetworkChangeNotifier::AddIPAddressObserver(this);
+
+  network_monitor_ids_.insert(plugin_dispatcher_id);
+  GetAndSendNetworkList();
+}
+
+void PepperMessageFilter::OnNetworkMonitorStop(uint32 plugin_dispatcher_id) {
+  if (!permissions_.HasPermission(ppapi::PERMISSION_PRIVATE))
+    return;
+
+  network_monitor_ids_.erase(plugin_dispatcher_id);
+  if (network_monitor_ids_.empty())
+    net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
+}
+
 void PepperMessageFilter::OnX509CertificateParseDER(
     const std::vector<char>& der,
     bool* succeeded,
@@ -37,4 +84,51 @@ void PepperMessageFilter::OnX509CertificateParseDER(
       pepper_socket_utils::GetCertificateFields(&der[0], der.size(), result);
 }
 
+void PepperMessageFilter::GetAndSendNetworkList() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  BrowserThread::PostBlockingPoolTask(
+      FROM_HERE, base::Bind(&PepperMessageFilter::DoGetNetworkList, this));
+}
+
+void PepperMessageFilter::DoGetNetworkList() {
+  scoped_ptr<net::NetworkInterfaceList> list(new net::NetworkInterfaceList());
+  net::GetNetworkList(list.get());
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&PepperMessageFilter::SendNetworkList,
+                 this, base::Passed(&list)));
+}
+
+void PepperMessageFilter::SendNetworkList(
+    scoped_ptr<net::NetworkInterfaceList> list) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  scoped_ptr< ::ppapi::NetworkList> list_copy(
+      new ::ppapi::NetworkList(list->size()));
+  for (size_t i = 0; i < list->size(); ++i) {
+    const net::NetworkInterface& network = list->at(i);
+    ::ppapi::NetworkInfo& network_copy = list_copy->at(i);
+    network_copy.name = network.name;
+
+    network_copy.addresses.resize(1, NetAddressPrivateImpl::kInvalidNetAddress);
+    bool result = NetAddressPrivateImpl::IPEndPointToNetAddress(
+        network.address, 0, &(network_copy.addresses[0]));
+    DCHECK(result);
+
+    // TODO(sergeyu): Currently net::NetworkInterfaceList provides
+    // only name and one IP address. Add all other fields and copy
+    // them here.
+    network_copy.type = PP_NETWORKLIST_UNKNOWN;
+    network_copy.state = PP_NETWORKLIST_UP;
+    network_copy.display_name = network.name;
+    network_copy.mtu = 0;
+  }
+  for (NetworkMonitorIdSet::iterator it = network_monitor_ids_.begin();
+       it != network_monitor_ids_.end(); ++it) {
+    Send(new PpapiMsg_PPBNetworkMonitor_NetworkList(
+        ppapi::API_ID_PPB_NETWORKMANAGER_PRIVATE, *it, *list_copy));
+  }
+}
+
 }  // namespace content