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      1 // Copyright (c) 2013 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 <string>
      6 #include "base/bind.h"
      7 #include "chrome/common/extensions/extension_messages.h"
      8 #include "chrome/renderer/chrome_render_process_observer.h"
      9 #include "chrome/renderer/extensions/activity_log_converter_strategy.h"
     10 #include "chrome/renderer/extensions/api_activity_logger.h"
     11 #include "content/public/renderer/render_thread.h"
     12 #include "content/public/renderer/v8_value_converter.h"
     13 
     14 using content::V8ValueConverter;
     15 
     16 namespace extensions {
     17 
     18 APIActivityLogger::APIActivityLogger(
     19     Dispatcher* dispatcher, ChromeV8Context* context)
     20     : ChromeV8Extension(dispatcher, context) {
     21   RouteFunction("LogEvent", base::Bind(&APIActivityLogger::LogEvent));
     22   RouteFunction("LogAPICall", base::Bind(&APIActivityLogger::LogAPICall));
     23   RouteFunction("LogBlockedCall",
     24                 base::Bind(&APIActivityLogger::LogBlockedCallWrapper));
     25 }
     26 
     27 // static
     28 void APIActivityLogger::LogAPICall(
     29     const v8::FunctionCallbackInfo<v8::Value>& args) {
     30   LogInternal(APICALL, args);
     31 }
     32 
     33 // static
     34 void APIActivityLogger::LogEvent(
     35     const v8::FunctionCallbackInfo<v8::Value>& args) {
     36   LogInternal(EVENT, args);
     37 }
     38 
     39 // static
     40 void APIActivityLogger::LogInternal(
     41     const CallType call_type,
     42     const v8::FunctionCallbackInfo<v8::Value>& args) {
     43   DCHECK_GT(args.Length(), 2);
     44   DCHECK(args[0]->IsString());
     45   DCHECK(args[1]->IsString());
     46   DCHECK(args[2]->IsArray());
     47 
     48   std::string ext_id = *v8::String::AsciiValue(args[0]);
     49   ExtensionHostMsg_APIActionOrEvent_Params params;
     50   params.api_call = *v8::String::AsciiValue(args[1]);
     51   if (args.Length() == 4)  // Extras are optional.
     52     params.extra = *v8::String::AsciiValue(args[3]);
     53   else
     54     params.extra = "";
     55 
     56   // Get the array of api call arguments.
     57   v8::Local<v8::Array> arg_array = v8::Local<v8::Array>::Cast(args[2]);
     58   if (arg_array->Length() > 0) {
     59     scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
     60     ActivityLogConverterStrategy strategy;
     61     converter->SetFunctionAllowed(true);
     62     converter->SetStrategy(&strategy);
     63     scoped_ptr<ListValue> arg_list(new ListValue());
     64     for (size_t i = 0; i < arg_array->Length(); ++i) {
     65       arg_list->Set(i,
     66                     converter->FromV8Value(arg_array->Get(i),
     67                     v8::Context::GetCurrent()));
     68     }
     69     params.arguments.Swap(arg_list.get());
     70   }
     71 
     72   if (call_type == APICALL) {
     73     content::RenderThread::Get()->Send(
     74         new ExtensionHostMsg_AddAPIActionToActivityLog(ext_id, params));
     75   } else if (call_type == EVENT) {
     76     content::RenderThread::Get()->Send(
     77         new ExtensionHostMsg_AddEventToActivityLog(ext_id, params));
     78   }
     79 }
     80 
     81 // static
     82 void APIActivityLogger::LogBlockedCallWrapper(
     83     const v8::FunctionCallbackInfo<v8::Value>& args) {
     84   DCHECK_EQ(args.Length(), 3);
     85   DCHECK(args[0]->IsString());
     86   DCHECK(args[1]->IsString());
     87   DCHECK(args[2]->IsNumber());
     88   int result;
     89   scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
     90   converter->FromV8Value(args[2],
     91                          v8::Context::GetCurrent())->GetAsInteger(&result);
     92   LogBlockedCall(*v8::String::AsciiValue(args[0]),
     93                  *v8::String::AsciiValue(args[1]),
     94                  static_cast<Feature::AvailabilityResult>(result));
     95 }
     96 
     97 // static
     98 void APIActivityLogger::LogBlockedCall(const std::string& extension_id,
     99                                        const std::string& function_name,
    100                                        Feature::AvailabilityResult result) {
    101   // We don't really want to bother logging if it isn't permission related.
    102   if (result == Feature::INVALID_MIN_MANIFEST_VERSION ||
    103       result == Feature::INVALID_MAX_MANIFEST_VERSION ||
    104       result == Feature::UNSUPPORTED_CHANNEL)
    105     return;
    106   content::RenderThread::Get()->Send(
    107       new ExtensionHostMsg_AddBlockedCallToActivityLog(extension_id,
    108                                                        function_name));
    109 }
    110 
    111 
    112 }  // namespace extensions
    113