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/**
* This file is part of Haketilo.
*
* Function: Expose some special functionalities to injected scripts using
* CustomEvent's to communicate with them.
*
* Copyright (C) 2022 Wojtek Kosior
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* As additional permission under GNU GPL version 3 section 7, you
* may distribute forms of that code without the copy of the GNU
* GPL normally required by section 4, provided you include this
* license notice and, in case of non-source distribution, a URL
* through which recipients can access the Corresponding Source.
* If you modify file(s) with this exception, you may extend this
* exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* As a special exception to the GPL, any HTML file which merely
* makes function calls to this code, and for that purpose
* includes it by reference shall be deemed a separate work for
* copyright law purposes. If you modify this code, you may extend
* this exception to your version of the code, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* I, Wojtek Kosior, thereby promise not to sue for violation of this file's
* license. Although I request that you do not make use of this code in a
* proprietary program, I am not going to enforce this in court.
*/
#FROM common/browser.js IMPORT browser
#FROM common/misc.js IMPORT error_data_jsonifiable
async function on_CORS_bypass(event) {
const name = "haketilo_CORS_bypass";
if (typeof event.detail !== "object" ||
event.detail === null ||
typeof event.detail.id !== "string" ||
typeof event.detail.data !== "string") {
console.error(`Haketilo: Invalid detail for ${name}:`,
event.detail);
return;
}
try {
const data = JSON.parse(event.detail.data);
var result = await browser.runtime.sendMessage(["CORS_bypass", data]);
if (result === undefined)
throw new Error("Couldn't communicate with Haketilo background script.");
} catch(e) {
var result = {error: error_data_jsonifiable(e)};
}
const response_name = `${name}-${event.detail.id}`;
const detail = JSON.stringify(result);
window.dispatchEvent(new CustomEvent(response_name, {detail}));
}
function start() {
window.addEventListener("haketilo_CORS_bypass", on_CORS_bypass);
}
#EXPORT start
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