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/**
* This file is part of Haketilo.
*
* Function: Making requests to remote repositories through a response cache in
* operating in the content script of a browser tab.
*
* Copyright (C) 2022 Wojtek Kosior <koszko@koszko.org>
*
* 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
/*
* This is a complementary function to error_data_jsonifiable() in
* common/misc.js.
*/
function error_from_jsonifiable_data(jsonifiable) {
const arg_props = ["message", "fileName", "lineNumber"];
return new window[jsonifiable.name](...arg_props.map(p => jsonifiable[p]));
}
/*
* Make it possible to recover a Response object. This is a complementary
* function to response_data_jsonifiable() in background/CORS_bypass_server.js.
*/
function response_from_jsonifiable_data(jsonifiable) {
const body = jsonifiable.body, body_len = body.length / 2;
const body_buf = new Uint8Array(body_len);
for (let i = 0; i < body_len; i++)
body_buf[i] = parseInt(`0x${body.substring(i * 2, i * 2 + 2)}`);
const init = {
status: jsonifiable.status,
statusText: jsonifiable.statusText,
headers: new Headers(jsonifiable.headers)
};
return new Response(body_buf, init);
}
async function indirect_fetch(tab_id, url) {
const msg = ["repo_query", url];
const jsonifiable = await browser.tabs.sendMessage(tab_id, msg);
if ("error" in jsonifiable)
throw error_from_jsonifiable_data(jsonifiable);
return response_from_jsonifiable_data(jsonifiable);
}
#EXPORT indirect_fetch
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