| // 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/histogram_internals_request_job.h" |
| |
| #include "base/metrics/histogram.h" |
| #include "base/metrics/statistics_recorder.h" |
| #include "content/browser/histogram_synchronizer.h" |
| #include "net/base/escape.h" |
| #include "net/base/net_errors.h" |
| #include "net/url_request/url_request.h" |
| #include "url/gurl.h" |
| |
| namespace content { |
| |
| HistogramInternalsRequestJob::HistogramInternalsRequestJob( |
| net::URLRequest* request, net::NetworkDelegate* network_delegate) |
| : net::URLRequestSimpleJob(request, network_delegate) { |
| const std::string& spec = request->url().possibly_invalid_spec(); |
| const url::Parsed& parsed = request->url().parsed_for_possibly_invalid_spec(); |
| // + 1 to skip the slash at the beginning of the path. |
| int offset = parsed.CountCharactersBefore(url::Parsed::PATH, false) + 1; |
| |
| if (offset < static_cast<int>(spec.size())) |
| path_.assign(spec.substr(offset)); |
| } |
| |
| void AboutHistogram(std::string* data, const std::string& path) { |
| HistogramSynchronizer::FetchHistograms(); |
| |
| std::string unescaped_query; |
| std::string unescaped_title("About Histograms"); |
| if (!path.empty()) { |
| unescaped_query = net::UnescapeURLComponent(path, |
| net::UnescapeRule::NORMAL); |
| unescaped_title += " - " + unescaped_query; |
| } |
| |
| data->append("<!DOCTYPE html>\n<html>\n<head>\n"); |
| data->append( |
| "<meta http-equiv=\"Content-Security-Policy\" " |
| "content=\"object-src 'none'; script-src 'none'\">"); |
| data->append("<title>"); |
| data->append(net::EscapeForHTML(unescaped_title)); |
| data->append("</title>\n"); |
| data->append("</head><body>"); |
| |
| // Display any stats for which we sent off requests the last time. |
| data->append("<p>Stats accumulated from browser startup to previous "); |
| data->append("page load; reload to get stats as of this page load.</p>\n"); |
| data->append("<table width=\"100%\">\n"); |
| |
| base::StatisticsRecorder::WriteHTMLGraph(unescaped_query, data); |
| } |
| |
| int HistogramInternalsRequestJob::GetData( |
| std::string* mime_type, |
| std::string* charset, |
| std::string* data, |
| const net::CompletionCallback& callback) const { |
| mime_type->assign("text/html"); |
| charset->assign("UTF8"); |
| |
| data->clear(); |
| AboutHistogram(data, path_); |
| return net::OK; |
| } |
| |
| } // namespace content |
