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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 "chrome/browser/ui/webui/extensions/extension_error_handler.h"
#include "base/bind.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/location.h"
#include "base/strings/string16.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/sequenced_worker_pool.h"
#include "base/values.h"
#include "chrome/browser/devtools/devtools_window.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_data_source.h"
#include "extensions/browser/extension_error.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/file_highlighter.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
namespace extensions {
namespace {
// Keys for objects passed to and from extension error UI.
const char kPathSuffixKey[] = "pathSuffix";
const char kTitleKey[] = "title";
std::string ReadFileToString(const base::FilePath& path) {
std::string data;
base::ReadFileToString(path, &data);
return data;
}
} // namespace
ExtensionErrorHandler::ExtensionErrorHandler(Profile* profile)
: profile_(profile) {
}
ExtensionErrorHandler::~ExtensionErrorHandler() {
}
void ExtensionErrorHandler::GetLocalizedValues(
content::WebUIDataSource* source) {
source->AddString(
"extensionErrorsManifestErrors",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_MANIFEST_ERRORS));
source->AddString(
"extensionErrorsRuntimeErrors",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_RUNTIME_ERRORS));
source->AddString(
"extensionErrorsShowMore",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_SHOW_MORE));
source->AddString(
"extensionErrorsShowFewer",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERRORS_SHOW_FEWER));
source->AddString(
"extensionErrorViewSource",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERROR_VIEW_SOURCE));
source->AddString(
"extensionErrorInspect",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERROR_INSPECT));
source->AddString(
"extensionErrorContext",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERROR_CONTEXT));
source->AddString(
"extensionErrorStackTrace",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERROR_STACK_TRACE));
source->AddString(
"extensionErrorAnonymousFunction",
l10n_util::GetStringUTF16(IDS_EXTENSIONS_ERROR_ANONYMOUS_FUNCTION));
}
void ExtensionErrorHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"extensionErrorRequestFileSource",
base::Bind(&ExtensionErrorHandler::HandleRequestFileSource,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"extensionErrorOpenDevTools",
base::Bind(&ExtensionErrorHandler::HandleOpenDevTools,
base::Unretained(this)));
}
void ExtensionErrorHandler::HandleRequestFileSource(
const base::ListValue* args) {
// There should only be one argument, a dictionary. Use this instead of a list
// because it's more descriptive, harder to accidentally break with minor
// modifications, and supports optional arguments more easily.
CHECK_EQ(1u, args->GetSize());
const base::DictionaryValue* dict = NULL;
// Three required arguments: extension_id, path_suffix, and error_message.
std::string extension_id;
base::FilePath::StringType path_suffix_string;
base::string16 error_message;
if (!args->GetDictionary(0, &dict) ||
!dict->GetString(kPathSuffixKey, &path_suffix_string) ||
!dict->GetString(ExtensionError::kExtensionIdKey, &extension_id) ||
!dict->GetString(ExtensionError::kMessageKey, &error_message)) {
NOTREACHED();
return;
}
const Extension* extension =
ExtensionSystem::Get(Profile::FromWebUI(web_ui()))->
extension_service()->GetExtensionById(extension_id,
true /* include disabled */ );
// Under no circumstances should we ever need to reference a file outside of
// the extension's directory. If it tries to, abort.
base::FilePath path_suffix(path_suffix_string);
if (path_suffix.ReferencesParent())
return;
base::FilePath path = extension->path().Append(path_suffix);
// Setting the title and the error message is the same for all file types.
scoped_ptr<base::DictionaryValue> results(new base::DictionaryValue);
results->SetString(kTitleKey,
base::UTF8ToUTF16(extension->name()) +
base::ASCIIToUTF16(": ") +
path.BaseName().LossyDisplayName());
results->SetString(ExtensionError::kMessageKey, error_message);
base::Callback<void(const std::string&)> reply;
if (path_suffix_string == kManifestFilename) {
std::string manifest_key;
if (!dict->GetString(ManifestError::kManifestKeyKey, &manifest_key)) {
NOTREACHED();
return;
}
// A "specific" location is optional.
std::string specific;
dict->GetString(ManifestError::kManifestSpecificKey, &specific);
reply = base::Bind(&ExtensionErrorHandler::GetManifestFileCallback,
base::Unretained(this),
base::Owned(results.release()),
manifest_key,
specific);
} else {
int line_number = 0;
dict->GetInteger(RuntimeError::kLineNumberKey, &line_number);
reply = base::Bind(&ExtensionErrorHandler::GetSourceFileCallback,
base::Unretained(this),
base::Owned(results.release()),
line_number);
}
base::PostTaskAndReplyWithResult(
content::BrowserThread::GetBlockingPool(),
FROM_HERE,
base::Bind(&ReadFileToString, path),
reply);
}
void ExtensionErrorHandler::HandleOpenDevTools(const base::ListValue* args) {
CHECK_EQ(1U, args->GetSize());
const base::DictionaryValue* dict = NULL;
int render_process_id = 0;
int render_view_id = 0;
// The render view and render process ids are required.
if (!args->GetDictionary(0, &dict) ||
!dict->GetInteger(RuntimeError::kRenderProcessIdKey,
&render_process_id) ||
!dict->GetInteger(RuntimeError::kRenderViewIdKey, &render_view_id)) {
NOTREACHED();
return;
}
content::RenderViewHost* rvh =
content::RenderViewHost::FromID(render_process_id, render_view_id);
// It's possible that the render view was closed since we last updated the
// links. Handle this gracefully.
if (!rvh)
return;
// If we include a url, we should inspect it specifically (and not just the
// render view).
base::string16 url;
if (dict->GetString(RuntimeError::kUrlKey, &url)) {
// Line and column numbers are optional; default to the first line.
int line_number = 1;
int column_number = 1;
dict->GetInteger(RuntimeError::kLineNumberKey, &line_number);
dict->GetInteger(RuntimeError::kColumnNumberKey, &column_number);
// Line/column numbers are reported in display-friendly 1-based numbers,
// but are inspected in zero-based numbers.
DevToolsWindow::OpenDevToolsWindow(rvh,
DevToolsToggleAction::Reveal(url, line_number - 1, column_number - 1));
} else {
DevToolsWindow::OpenDevToolsWindow(rvh);
}
// Once we open the inspector, we focus on the appropriate tab...
content::WebContents* web_contents =
content::WebContents::FromRenderViewHost(rvh);
Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
// ... but background pages have no associated browser (and the inspector
// opens in its own window), so our work is done.
if (!browser)
return;
TabStripModel* tab_strip = browser->tab_strip_model();
tab_strip->ActivateTabAt(tab_strip->GetIndexOfWebContents(web_contents),
false); // Not through direct user gesture.
}
void ExtensionErrorHandler::GetManifestFileCallback(
base::DictionaryValue* results,
const std::string& key,
const std::string& specific,
const std::string& contents) {
ManifestHighlighter highlighter(contents, key, specific);
highlighter.SetHighlightedRegions(results);
web_ui()->CallJavascriptFunction(
"extensions.ExtensionErrorOverlay.requestFileSourceResponse", *results);
}
void ExtensionErrorHandler::GetSourceFileCallback(
base::DictionaryValue* results,
int line_number,
const std::string& contents) {
SourceHighlighter highlighter(contents, line_number);
highlighter.SetHighlightedRegions(results);
web_ui()->CallJavascriptFunction(
"extensions.ExtensionErrorOverlay.requestFileSourceResponse", *results);
}
} // namespace extensions
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