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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/browser/extensions/webstore_installer.h"
#include "base/string_util.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/crx_installer.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/tabs/tab_strip_model.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_constants.h"
#include "content/browser/tab_contents/navigation_controller.h"
#include "content/common/notification_details.h"
#include "content/common/notification_source.h"
#include "googleurl/src/gurl.h"
#include "net/base/escape.h"
namespace {
const char kInvalidIdError[] = "Invalid id";
const char kNoBrowserError[] = "No browser found";
const char kInlineInstallSource[] = "inline";
const char kDefaultInstallSource[] = "";
GURL GetWebstoreInstallUrl(
const std::string& extension_id, const std::string& install_source) {
std::vector<std::string> params;
params.push_back("id=" + extension_id);
if (!install_source.empty()) {
params.push_back("installsource=" + install_source);
}
params.push_back("lang=" + g_browser_process->GetApplicationLocale());
params.push_back("uc");
std::string url_string = extension_urls::GetWebstoreUpdateUrl(true).spec();
GURL url(url_string + "?response=redirect&x=" +
net::EscapeQueryParamValue(JoinString(params, '&'), true));
DCHECK(url.is_valid());
return url;
}
} // namespace
WebstoreInstaller::WebstoreInstaller(Profile* profile)
: profile_(profile) {
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_INSTALLED,
Source<Profile>(profile));
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_INSTALL_ERROR,
Source<CrxInstaller>(NULL));
}
WebstoreInstaller::~WebstoreInstaller() {}
struct WebstoreInstaller::PendingInstall {
PendingInstall() : delegate(NULL) {}
PendingInstall(const std::string& id, const GURL& url, Delegate* delegate)
: id(id), download_url(url), delegate(delegate) {}
~PendingInstall() {}
// The id of the extension.
std::string id;
// The gallery download URL for the extension.
GURL download_url;
// The delegate for this install.
Delegate* delegate;
};
void WebstoreInstaller::InstallExtension(
const std::string& id, Delegate* delegate, int flags) {
if (!Extension::IdIsValid(id)) {
ReportFailure(id, kInvalidIdError);
return;
}
Browser* browser = BrowserList::GetLastActiveWithProfile(profile_);
if (!browser) {
ReportFailure(id, kNoBrowserError);
return;
}
GURL install_url = GetWebstoreInstallUrl(id, flags & FLAG_INLINE_INSTALL ?
kInlineInstallSource : kDefaultInstallSource);
PendingInstall pending_install = CreatePendingInstall(
id, install_url, delegate);
// The download url for the given |id| is now contained in
// |pending_install.download_url|. We navigate the current tab to this url
// which will result in a download starting. Once completed it will go through
// the normal extension install flow.
NavigationController& controller =
browser->tabstrip_model()->GetActiveTabContents()->controller();
// TODO(mihaip, jstritar): For inline installs, we pretend like the referrer
// is the gallery, even though this could be an inline install, in order to
// pass the checks in ExtensionService::IsDownloadFromGallery. We should
// instead pass the real referrer, track if this is an inline install in the
// whitelist entry and look that up when checking that this is a valid
// download.
GURL referrer = controller.GetActiveEntry()->url();
if (flags & FLAG_INLINE_INSTALL)
referrer = GURL(extension_urls::GetWebstoreItemDetailURLPrefix() + id);
controller.LoadURL(install_url,
referrer,
content::PAGE_TRANSITION_LINK,
std::string());
}
void WebstoreInstaller::Observe(int type,
const NotificationSource& source,
const NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_EXTENSION_INSTALLED: {
CHECK(profile_->IsSameProfile(Source<Profile>(source).ptr()));
const Extension* extension = Details<const Extension>(details).ptr();
ReportSuccess(extension->id());
break;
}
case chrome::NOTIFICATION_EXTENSION_INSTALL_ERROR: {
CrxInstaller* crx_installer = Source<CrxInstaller>(source).ptr();
CHECK(crx_installer);
if (!profile_->IsSameProfile(crx_installer->profile()))
return;
std::string id = GetPendingInstallId(
crx_installer->original_download_url());
const std::string* error = Details<const std::string>(details).ptr();
if (!id.empty())
ReportFailure(id, *error);
break;
}
default:
NOTREACHED();
}
}
bool WebstoreInstaller::ClearPendingInstall(
const std::string& id, PendingInstall* install) {
for (size_t i = 0; i < pending_installs_.size(); ++i) {
if (pending_installs_[i].id == id) {
*install = pending_installs_[i];
pending_installs_.erase(pending_installs_.begin() + i);
return true;
}
}
return false;
}
const WebstoreInstaller::PendingInstall&
WebstoreInstaller::CreatePendingInstall(
const std::string& id, GURL install_url, Delegate* delegate) {
PendingInstall pending_install(id, install_url, delegate);
pending_installs_.push_back(pending_install);
return *(pending_installs_.end() - 1);
}
std::string WebstoreInstaller::GetPendingInstallId(const GURL& url) {
if (url.is_empty())
return std::string();
for (size_t i = 0; i < pending_installs_.size(); ++i) {
if (pending_installs_[i].download_url == url)
return pending_installs_[i].id;
}
return std::string();
}
void WebstoreInstaller::ReportFailure(
const std::string& id, const std::string& error) {
PendingInstall install;
if (!ClearPendingInstall(id, &install))
return;
if (install.delegate)
install.delegate->OnExtensionInstallFailure(id, error);
}
void WebstoreInstaller::ReportSuccess(const std::string& id) {
PendingInstall install;
if (!ClearPendingInstall(id, &install))
return;
if (install.delegate)
install.delegate->OnExtensionInstallSuccess(id);
}
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