chrome/browser/devtools/devtools_network_protocol_handler.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/devtools/devtools_network_protocol_handler.h"
   6
   7 #include "base/values.h"
   8 #include "chrome/browser/devtools/devtools_network_conditions.h"
   9 #include "chrome/browser/devtools/devtools_network_controller.h"
  10 #include "chrome/browser/devtools/devtools_protocol_constants.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "content/public/browser/devtools_agent_host.h"
  13 #include "content/public/browser/web_contents.h"
  14
  15 DevToolsNetworkProtocolHandler::DevToolsNetworkProtocolHandler() {
  16 }
  17
  18 DevToolsNetworkProtocolHandler::~DevToolsNetworkProtocolHandler() {
  19 }
  20
  21 base::DictionaryValue* DevToolsNetworkProtocolHandler::HandleCommand(
  22     content::DevToolsAgentHost* agent_host,
  23     base::DictionaryValue* command_dict) {
  24   int id = 0;
  25   std::string method;
  26   const base::DictionaryValue* params = nullptr;
  27   if (!DevToolsProtocol::ParseCommand(command_dict, &id, &method, &params))
  28     return nullptr;
  29
  30   namespace network = ::chrome::devtools::Network;
  31
  32   if (method == network::emulateNetworkConditions::kName)
  33     return EmulateNetworkConditions(agent_host, id, params).release();
  34
  35   if (method == network::canEmulateNetworkConditions::kName)
  36     return CanEmulateNetworkConditions(agent_host, id, params).release();
  37
  38   return nullptr;
  39 }
  40
  41 scoped_ptr<base::DictionaryValue>
  42 DevToolsNetworkProtocolHandler::CanEmulateNetworkConditions(
  43     content::DevToolsAgentHost* agent_host,
  44     int command_id,
  45     const base::DictionaryValue* params) {
  46   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
  47   result->SetBoolean(chrome::devtools::kResult, true);
  48   return DevToolsProtocol::CreateSuccessResponse(command_id, result.Pass());
  49 }
  50
  51 scoped_ptr<base::DictionaryValue>
  52 DevToolsNetworkProtocolHandler::EmulateNetworkConditions(
  53     content::DevToolsAgentHost* agent_host,
  54     int command_id,
  55     const base::DictionaryValue* params) {
  56   namespace names = ::chrome::devtools::Network::emulateNetworkConditions;
  57
  58   bool offline = false;
  59   if (!params || !params->GetBoolean(names::kParamOffline, &offline)) {
  60     return DevToolsProtocol::CreateInvalidParamsResponse(
  61         command_id, names::kParamOffline);
  62   }
  63   double latency = 0.0;
  64   if (!params->GetDouble(names::kParamLatency, &latency)) {
  65     return DevToolsProtocol::CreateInvalidParamsResponse(
  66         command_id, names::kParamLatency);
  67   }
  68   if (latency < 0.0)
  69     latency = 0.0;
  70
  71   double download_throughput = 0.0;
  72   if (!params->GetDouble(names::kParamDownloadThroughput,
  73                          &download_throughput)) {
  74     return DevToolsProtocol::CreateInvalidParamsResponse(
  75         command_id, names::kParamDownloadThroughput);
  76   }
  77   if (download_throughput < 0.0)
  78     download_throughput = 0.0;
  79
  80   double upload_throughput = 0.0;
  81   if (!params->GetDouble(names::kParamUploadThroughput, &upload_throughput)) {
  82     return DevToolsProtocol::CreateInvalidParamsResponse(
  83         command_id, names::kParamUploadThroughput);
  84   }
  85   if (upload_throughput < 0.0)
  86     upload_throughput = 0.0;
  87
  88   scoped_ptr<DevToolsNetworkConditions> conditions(
  89       new DevToolsNetworkConditions(
  90           offline, latency, download_throughput, upload_throughput));
  91
  92   UpdateNetworkState(agent_host, conditions.Pass());
  93   return scoped_ptr<base::DictionaryValue>();
  94 }
  95
  96 void DevToolsNetworkProtocolHandler::UpdateNetworkState(
  97     content::DevToolsAgentHost* agent_host,
  98     scoped_ptr<DevToolsNetworkConditions> conditions) {
  99   Profile* profile = Profile::FromBrowserContext(
 100       agent_host->GetBrowserContext());
 101   if (!profile)
 102     return;
 103   profile->GetDevToolsNetworkController()->SetNetworkState(
 104       agent_host->GetId(), conditions.Pass());
 105 }
 106
 107 void DevToolsNetworkProtocolHandler::DevToolsAgentStateChanged(
 108     content::DevToolsAgentHost* agent_host,
 109     bool attached) {
 110   scoped_ptr<DevToolsNetworkConditions> conditions;
 111   if (attached)
 112     conditions.reset(new DevToolsNetworkConditions());
 113   UpdateNetworkState(agent_host, conditions.Pass());
 114 }