/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set sts=2 sw=2 et tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
var { Constructor: CC } = Components;
ChromeUtils.defineESModuleGetters(
this, {
CommonUtils:
"resource://services-common/utils.sys.mjs",
});
XPCOMUtils.defineLazyPreferenceGetter(
this,
"redirectDomain",
"extensions.webextensions.identity.redirectDomain"
);
let CryptoHash = CC(
"@mozilla.org/security/hash;1",
"nsICryptoHash",
"initWithString"
);
XPCOMUtils.defineLazyGlobalGetters(
this, [
"URL",
"TextEncoder"]);
const computeHash = str => {
let byteArr =
new TextEncoder().encode(str);
let hash =
new CryptoHash(
"sha1");
hash.update(byteArr, byteArr.length);
return CommonUtils.bytesAsHex(hash.finish(
false));
};
this.identity =
class extends ExtensionAPI {
getAPI(context) {
let { extension } = context;
return {
identity: {
getRedirectURL:
function (path =
"") {
let hash = computeHash(extension.id);
let url =
new URL(`https:
//${hash}.${redirectDomain}/`);
url.pathname = path;
return url.href;
},
launchWebAuthFlow:
function (details) {
// Validate the url and retreive redirect_uri if it was provided.
let url, redirectURI;
let baseRedirectURL =
this.getRedirectURL();
// Allow using loopback address for native OAuth flows as some
// providers do not accept the URL provided by getRedirectURL.
// For more context, see bug 1635344.
let loopbackURL = `http:
//127.0.0.1/mozoauth2/${computeHash(
extension.id
)}`;
try {
url =
new URL(details.url);
}
catch (e) {
return Promise.reject({ message:
"details.url is invalid" });
}
try {
redirectURI =
new URL(
url.searchParams.get(
"redirect_uri") || baseRedirectURL
);
if (
!redirectURI.href.startsWith(baseRedirectURL) &&
!redirectURI.href.startsWith(loopbackURL)
) {
return Promise.reject({ message:
"redirect_uri not allowed" });
}
}
catch (e) {
return Promise.reject({ message:
"redirect_uri is invalid" });
}
return context.childManager.callParentAsyncFunction(
"identity.launchWebAuthFlowInParent",
[details, redirectURI.href]
);
},
},
};
}
};