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// Copyright 2013 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 "components/plugins/renderer/mobile_youtube_plugin.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "content/public/common/content_constants.h"
#include "content/public/renderer/render_view.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "ui/webui/jstemplate_builder.h"
using WebKit::WebFrame;
using WebKit::WebPlugin;
using WebKit::WebURLRequest;
const char* const kSlashVSlash = "/v/";
const char* const kSlashESlash = "/e/";
namespace {
std::string GetYoutubeVideoId(const WebKit::WebPluginParams& params) {
GURL url(params.url);
std::string video_id = url.path().substr(strlen(kSlashVSlash));
// Extract just the video id
size_t video_id_end = video_id.find('&');
if (video_id_end != std::string::npos)
video_id = video_id.substr(0, video_id_end);
return video_id;
}
std::string HtmlData(const WebKit::WebPluginParams& params,
base::StringPiece template_html) {
base::DictionaryValue values;
values.SetString("video_id", GetYoutubeVideoId(params));
return webui::GetI18nTemplateHtml(template_html, &values);
}
bool IsValidYouTubeVideo(const std::string& path) {
unsigned len = strlen(kSlashVSlash);
// check for more than just /v/ or /e/.
if (path.length() <= len)
return false;
std::string str = StringToLowerASCII(path);
// Youtube flash url can start with /v/ or /e/.
if (strncmp(str.data(), kSlashVSlash, len) != 0 &&
strncmp(str.data(), kSlashESlash, len) != 0)
return false;
// Start after /v/
for (unsigned i = len; i < path.length(); i++) {
char c = str[i];
if (isalpha(c) || isdigit(c) || c == '_' || c == '-')
continue;
// The url can have more parameters such as &hl=en after the video id.
// Once we start seeing extra parameters we can return true.
return c == '&' && i > len;
}
return true;
}
} // namespace
namespace plugins {
MobileYouTubePlugin::MobileYouTubePlugin(content::RenderView* render_view,
WebKit::WebFrame* frame,
const WebKit::WebPluginParams& params,
base::StringPiece& template_html,
GURL placeholderDataUrl)
: PluginPlaceholder(render_view,
frame,
params,
HtmlData(params, template_html),
placeholderDataUrl) {}
// static
bool MobileYouTubePlugin::IsYouTubeURL(const GURL& url,
const std::string& mime_type) {
std::string host = url.host();
bool is_youtube = EndsWith(host, "youtube.com", true) ||
EndsWith(host, "youtube-nocookie.com", true);
return is_youtube && IsValidYouTubeVideo(url.path()) &&
LowerCaseEqualsASCII(mime_type, content::kFlashPluginSwfMimeType);
}
void MobileYouTubePlugin::OpenYoutubeUrlCallback(
const webkit_glue::CppArgumentList& args,
webkit_glue::CppVariant* result) {
std::string youtube("vnd.youtube:");
GURL url(youtube.append(GetYoutubeVideoId(GetPluginParams())));
WebURLRequest request;
request.initialize();
request.setURL(url);
render_view()->LoadURLExternally(
GetFrame(), request, WebKit::WebNavigationPolicyNewForegroundTab);
}
void MobileYouTubePlugin::BindWebFrame(WebFrame* frame) {
PluginPlaceholder::BindWebFrame(frame);
BindCallback("openYoutubeURL",
base::Bind(&MobileYouTubePlugin::OpenYoutubeUrlCallback,
base::Unretained(this)));
}
} // namespace plugins
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