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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/devtools/devtools_netlog_observer.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/common/resource_response.h"
#include "net/base/load_flags.h"
#include "net/http/http_response_headers.h"
#include "net/http/http_util.h"
#include "net/spdy/spdy_header_block.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_netlog_params.h"
namespace content {
const size_t kMaxNumEntries = 1000;
DevToolsNetLogObserver* DevToolsNetLogObserver::instance_ = NULL;
DevToolsNetLogObserver::DevToolsNetLogObserver() {
}
DevToolsNetLogObserver::~DevToolsNetLogObserver() {
}
DevToolsNetLogObserver::ResourceInfo*
DevToolsNetLogObserver::GetResourceInfo(uint32 id) {
RequestToInfoMap::iterator it = request_to_info_.find(id);
if (it != request_to_info_.end())
return it->second.get();
return NULL;
}
void DevToolsNetLogObserver::OnAddEntry(const net::NetLog::Entry& entry) {
// The events that the Observer is interested in only occur on the IO thread.
if (!BrowserThread::CurrentlyOn(BrowserThread::IO))
return;
if (entry.source().type == net::NetLog::SOURCE_URL_REQUEST)
OnAddURLRequestEntry(entry);
}
void DevToolsNetLogObserver::OnAddURLRequestEntry(
const net::NetLog::Entry& entry) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
bool is_begin = entry.phase() == net::NetLog::PHASE_BEGIN;
bool is_end = entry.phase() == net::NetLog::PHASE_END;
if (entry.type() == net::NetLog::TYPE_URL_REQUEST_START_JOB) {
if (is_begin) {
int load_flags;
scoped_ptr<base::Value> event_param(entry.ParametersToValue());
if (!net::StartEventLoadFlagsFromEventParams(event_param.get(),
&load_flags)) {
return;
}
if (!(load_flags & net::LOAD_REPORT_RAW_HEADERS))
return;
if (request_to_info_.size() > kMaxNumEntries) {
LOG(WARNING) << "The raw headers observer url request count has grown "
"larger than expected, resetting";
request_to_info_.clear();
}
request_to_info_[entry.source().id] = new ResourceInfo();
}
return;
} else if (entry.type() == net::NetLog::TYPE_REQUEST_ALIVE) {
// Cleanup records based on the TYPE_REQUEST_ALIVE entry.
if (is_end)
request_to_info_.erase(entry.source().id);
return;
}
ResourceInfo* info = GetResourceInfo(entry.source().id);
if (!info)
return;
switch (entry.type()) {
case net::NetLog::TYPE_HTTP_TRANSACTION_SEND_REQUEST_HEADERS: {
scoped_ptr<base::Value> event_params(entry.ParametersToValue());
std::string request_line;
net::HttpRequestHeaders request_headers;
if (!net::HttpRequestHeaders::FromNetLogParam(event_params.get(),
&request_headers,
&request_line)) {
NOTREACHED();
}
// We need to clear headers in case the same url_request is reused for
// several http requests (e.g. see http://crbug.com/80157).
info->request_headers.clear();
for (net::HttpRequestHeaders::Iterator it(request_headers);
it.GetNext();) {
info->request_headers.push_back(std::make_pair(it.name(), it.value()));
}
info->request_headers_text = request_line + request_headers.ToString();
break;
}
case net::NetLog::TYPE_HTTP_TRANSACTION_SPDY_SEND_REQUEST_HEADERS: {
scoped_ptr<base::Value> event_params(entry.ParametersToValue());
net::SpdyHeaderBlock request_headers;
if (!net::SpdyHeaderBlockFromNetLogParam(event_params.get(),
&request_headers)) {
NOTREACHED();
}
// We need to clear headers in case the same url_request is reused for
// several http requests (e.g. see http://crbug.com/80157).
info->request_headers.clear();
for (net::SpdyHeaderBlock::const_iterator it = request_headers.begin();
it != request_headers.end(); ++it) {
info->request_headers.push_back(std::make_pair(it->first, it->second));
}
info->request_headers_text = "";
break;
}
case net::NetLog::TYPE_HTTP_TRANSACTION_READ_RESPONSE_HEADERS: {
scoped_ptr<base::Value> event_params(entry.ParametersToValue());
scoped_refptr<net::HttpResponseHeaders> response_headers;
if (!net::HttpResponseHeaders::FromNetLogParam(event_params.get(),
&response_headers)) {
NOTREACHED();
}
info->http_status_code = response_headers->response_code();
info->http_status_text = response_headers->GetStatusText();
std::string name, value;
// We need to clear headers in case the same url_request is reused for
// several http requests (e.g. see http://crbug.com/80157).
info->response_headers.clear();
for (void* it = NULL;
response_headers->EnumerateHeaderLines(&it, &name, &value); ) {
info->response_headers.push_back(std::make_pair(name, value));
}
if (!info->request_headers_text.empty()) {
info->response_headers_text =
net::HttpUtil::ConvertHeadersBackToHTTPResponse(
response_headers->raw_headers());
} else {
// SPDY request.
info->response_headers_text = "";
}
break;
}
default:
break;
}
}
void DevToolsNetLogObserver::Attach() {
DCHECK(!instance_);
net::NetLog* net_log = GetContentClient()->browser()->GetNetLog();
if (net_log) {
instance_ = new DevToolsNetLogObserver();
net_log->AddThreadSafeObserver(instance_, net::NetLog::LOG_ALL_BUT_BYTES);
}
}
void DevToolsNetLogObserver::Detach() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (instance_) {
// Safest not to do this in the destructor to maintain thread safety across
// refactorings.
instance_->net_log()->RemoveThreadSafeObserver(instance_);
delete instance_;
instance_ = NULL;
}
}
DevToolsNetLogObserver* DevToolsNetLogObserver::GetInstance() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
return instance_;
}
// static
void DevToolsNetLogObserver::PopulateResponseInfo(
net::URLRequest* request,
ResourceResponse* response) {
if (!(request->load_flags() & net::LOAD_REPORT_RAW_HEADERS))
return;
uint32 source_id = request->net_log().source().id;
DevToolsNetLogObserver* dev_tools_net_log_observer =
DevToolsNetLogObserver::GetInstance();
if (dev_tools_net_log_observer == NULL)
return;
response->head.devtools_info =
dev_tools_net_log_observer->GetResourceInfo(source_id);
}
} // namespace content
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