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// Copyright (c) 2011 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 "chrome/renderer/plugin_uma.h"
#include <algorithm>
#include <cstring>
#include "base/metrics/histogram.h"
#include "base/string_util.h"
namespace {
// String we will use to convert mime tyoe to plugin type.
const char kWindowsMediaPlayerType[] = "application/x-mplayer2";
const char kSilverlightTypePrefix[] = "application/x-silverlight";
const char kRealPlayerTypePrefix[] = "audio/x-pn-realaudio";
const char kJavaTypeSubstring[] = "application/x-java-applet";
const char kQuickTimeType[] = "video/quicktime";
// Arrays containing file extensions connected with specific plugins.
// The arrays must be sorted because binary search is used on them.
const char* kWindowsMediaPlayerExtensions[] = {
".asx"
};
const char* kRealPlayerExtensions[] = {
".ra",
".ram",
".rm",
".rmm",
".rmp",
".rpm"
};
const char* kQuickTimeExtensions[] = {
".moov",
".mov",
".qif",
".qt",
".qti",
".qtif"
};
} // namespace.
class UMASenderImpl : public MissingPluginReporter::UMASender {
virtual void SendPluginUMA(MissingPluginReporter::PluginType plugin_type)
OVERRIDE;
};
void UMASenderImpl::SendPluginUMA(
MissingPluginReporter::PluginType plugin_type) {
UMA_HISTOGRAM_ENUMERATION("Plugin.MissingPlugins",
plugin_type,
MissingPluginReporter::OTHER);
}
// static.
MissingPluginReporter* MissingPluginReporter::GetInstance() {
return Singleton<MissingPluginReporter>::get();
}
void MissingPluginReporter::ReportPluginMissing(
std::string plugin_mime_type, const GURL& plugin_src) {
PluginType plugin_type;
// If we know plugin's mime type, we use it to determine plugin's type. Else,
// we try to determine plugin type using plugin source's extension.
if (!plugin_mime_type.empty()) {
StringToLowerASCII(&plugin_mime_type);
plugin_type = MimeTypeToPluginType(plugin_mime_type);
} else {
plugin_type = SrcToPluginType(plugin_src);
}
report_sender_->SendPluginUMA(plugin_type);
}
void MissingPluginReporter::SetUMASender(UMASender* sender) {
report_sender_.reset(sender);
}
MissingPluginReporter::MissingPluginReporter()
: report_sender_(new UMASenderImpl()) {
}
MissingPluginReporter::~MissingPluginReporter() {
}
// static.
bool MissingPluginReporter::CompareCStrings(const char* first,
const char* second) {
return strcmp(first, second) < 0;
}
bool MissingPluginReporter::CStringArrayContainsCString(const char** array,
size_t array_size,
const char* str) {
return std::binary_search(array, array + array_size, str, CompareCStrings);
}
void MissingPluginReporter::ExtractFileExtension(const GURL& src,
std::string* extension) {
std::string extension_file_path(src.ExtractFileName());
if (extension_file_path.empty())
extension_file_path = src.host();
size_t last_dot = extension_file_path.find_last_of('.');
if (last_dot != std::string::npos) {
*extension = extension_file_path.substr(last_dot);
} else {
extension->clear();
}
StringToLowerASCII(extension);
}
MissingPluginReporter::PluginType MissingPluginReporter::SrcToPluginType(
const GURL& src) {
std::string file_extension;
ExtractFileExtension(src, &file_extension);
if (CStringArrayContainsCString(kWindowsMediaPlayerExtensions,
arraysize(kWindowsMediaPlayerExtensions),
file_extension.c_str())) {
return WINDOWS_MEDIA_PLAYER;
}
if (CStringArrayContainsCString(kQuickTimeExtensions,
arraysize(kQuickTimeExtensions),
file_extension.c_str())) {
return QUICKTIME;
}
if (CStringArrayContainsCString(kRealPlayerExtensions,
arraysize(kRealPlayerExtensions),
file_extension.c_str())) {
return REALPLAYER;
}
return OTHER;
}
MissingPluginReporter::PluginType MissingPluginReporter::MimeTypeToPluginType(
const std::string& mime_type) {
if (strcmp(mime_type.c_str(), kWindowsMediaPlayerType) == 0)
return WINDOWS_MEDIA_PLAYER;
size_t prefix_length = strlen(kSilverlightTypePrefix);
if (strncmp(mime_type.c_str(), kSilverlightTypePrefix, prefix_length) == 0)
return SILVERLIGHT;
prefix_length = strlen(kRealPlayerTypePrefix);
if (strncmp(mime_type.c_str(), kRealPlayerTypePrefix, prefix_length) == 0)
return REALPLAYER;
if (strstr(mime_type.c_str(), kJavaTypeSubstring))
return JAVA;
if (strcmp(mime_type.c_str(), kQuickTimeType) == 0)
return QUICKTIME;
return OTHER;
}
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