electron/shell/browser/login_handler.cc

110 lines
3.9 KiB
C++

// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/login_handler.h"
#include <utility>
#include "base/task/sequenced_task_runner.h"
#include "gin/arguments.h"
#include "gin/dictionary.h"
#include "shell/browser/api/electron_api_app.h"
#include "shell/browser/api/electron_api_web_contents.h"
#include "shell/browser/javascript_environment.h"
#include "shell/common/gin_converters/callback_converter.h"
#include "shell/common/gin_converters/gurl_converter.h"
#include "shell/common/gin_converters/net_converter.h"
#include "shell/common/gin_converters/value_converter.h"
using content::BrowserThread;
namespace electron {
LoginHandler::LoginHandler(
const net::AuthChallengeInfo& auth_info,
content::WebContents* web_contents,
bool is_main_frame,
base::ProcessId process_id,
const GURL& url,
scoped_refptr<net::HttpResponseHeaders> response_headers,
bool first_auth_attempt,
LoginAuthRequiredCallback auth_required_callback)
: auth_required_callback_(std::move(auth_required_callback)) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&LoginHandler::EmitEvent, weak_factory_.GetWeakPtr(),
auth_info, web_contents, is_main_frame, process_id, url,
response_headers, first_auth_attempt));
}
void LoginHandler::EmitEvent(
net::AuthChallengeInfo auth_info,
content::WebContents* web_contents,
bool is_main_frame,
base::ProcessId process_id,
const GURL& url,
scoped_refptr<net::HttpResponseHeaders> response_headers,
bool first_auth_attempt) {
v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
v8::HandleScope scope(isolate);
raw_ptr<api::WebContents> api_web_contents = nullptr;
if (web_contents) {
api_web_contents = api::WebContents::From(web_contents);
if (!api_web_contents) {
std::move(auth_required_callback_).Run(std::nullopt);
return;
}
}
auto details = gin::Dictionary::CreateEmpty(isolate);
details.Set("url", url);
details.Set("pid", process_id);
// These parameters aren't documented, and I'm not sure that they're useful,
// but we might as well stick 'em on the details object. If it turns out they
// are useful, we can add them to the docs :)
details.Set("isMainFrame", is_main_frame);
details.Set("firstAuthAttempt", first_auth_attempt);
details.Set("responseHeaders", response_headers.get());
auto weak_this = weak_factory_.GetWeakPtr();
bool default_prevented = false;
if (api_web_contents) {
default_prevented =
api_web_contents->Emit("login", std::move(details), auth_info,
base::BindOnce(&LoginHandler::CallbackFromJS,
weak_factory_.GetWeakPtr()));
} else {
default_prevented =
api::App::Get()->Emit("login", nullptr, std::move(details), auth_info,
base::BindOnce(&LoginHandler::CallbackFromJS,
weak_factory_.GetWeakPtr()));
}
// ⚠️ NB, if CallbackFromJS is called during Emit(), |this| will have been
// deleted. Check the weak ptr before accessing any member variables to
// prevent UAF.
if (weak_this && !default_prevented && auth_required_callback_) {
std::move(auth_required_callback_).Run(std::nullopt);
}
}
LoginHandler::~LoginHandler() = default;
void LoginHandler::CallbackFromJS(gin::Arguments* args) {
if (auth_required_callback_) {
std::u16string username, password;
if (!args->GetNext(&username) || !args->GetNext(&password)) {
std::move(auth_required_callback_).Run(std::nullopt);
return;
}
std::move(auth_required_callback_)
.Run(net::AuthCredentials(username, password));
}
}
} // namespace electron