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preload.js
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preload.js
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/*
Reasonably Secure Electron
Copyright (C) 2019 Bishop Fox
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 2
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-------------------------------------------------------------------------
This preload script is callable from within the sandbox via postMessage,
but should not be directly accessible since it itself is not sandboxed.
*/
const { ipcRenderer } = require('electron');
window.addEventListener('message', (event) => {
try {
const msg = JSON.parse(event.data);
if (msg.type === 'request') {
if (['fs_'].some(prefix => msg.method.startsWith(prefix))) {
ipcRenderer.send('ipc', msg);
}
}
} catch (err) {
console.error(err);
}
});
ipcRenderer.on('ipc', (_, msg) => {
try {
if (msg.type === 'response' || msg.type === 'push') {
window.postMessage(JSON.stringify(msg), '*');
}
} catch (err) {
console.error(err);
}
});