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/*
Copyright (C) 2017 Kai Uwe Broulik <kde@privat.broulik.de>
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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// URL - data URL
let favIconDataForUrl = {};
let clearFavIconDataTimeoutId = 0;
let runningGetTabsQueries = 0;
addCallback("tabsrunner", "activate", function (message) {
var tabId = message.tabId;
console.log("Tabs Runner requested to activate tab with id", tabId);
raiseTab(tabId);
});
addCallback("tabsrunner", "setMuted", function (message) {
var tabId = message.tabId;
var muted = message.muted;
chrome.tabs.update(tabId, {muted: muted}, function (tab) {
if (chrome.runtime.lastError || !tab) { // this "lastError" stuff feels so archaic
// failed to mute/unmute
return;
}
});
});
// only forward certain tab properties back to our host
var whitelistedTabProperties = [
"id", "active", "audible", "favIconUrl", "incognito", "title", "url", "mutedInfo"
];
// FIXME We really should enforce some kind of security policy, so only e.g. plasmashell and krunner
// may access your tabs
addCallback("tabsrunner", "getTabs", function (message) {
++runningGetTabsQueries;
chrome.tabs.query({
windowType: "normal"
}, (tabs) => {
if (clearFavIconDataTimeoutId) {
clearTimeout(clearFavIconDataTimeoutId);
clearFavIconDataTimeoutId = 0;
}
// remove incognito tabs and properties not in whitelist
let filteredTabs = tabs;
// Firefox before 67 runs extensions in incognito by default
// but we keep running after an update, so exclude those tabs for it
if (IS_FIREFOX) {
filteredTabs = filteredTabs.filter(function (tab) {
return !tab.incognito;
});
}
filteredTabs = filterArrayObjects(filteredTabs, whitelistedTabProperties);
let favIconUrlsToFetch = new Set();
// Collect a set of fav icons to be requested
filteredTabs.forEach((tab) => {
const url = tab.favIconUrl;
if (!url) {
return;
}
// Already a data URL
if (url.match(/^data:image/)) {
return;
}
// Already in cache
if (favIconDataForUrl[url]) {
return;
}
favIconUrlsToFetch.add(url);
});
// Prepare the download requests for all fav icons
let requests = [];
favIconUrlsToFetch.forEach((url) => {
requests.push(new Promise((resolve) => {
fetch(url, {
cache: "force-cache"
}).then((response) => {
if (!response.ok) {
return resolve();
}
response.blob().then((blob) => {
let reader = new FileReader();
reader.onloadend = function() {
favIconDataForUrl[url] = reader.result;
return resolve();
}
reader.readAsDataURL(blob);
}, (err) => {
console.warn("Failed to read response of", url, "as blob", err);
resolve();
});
}, (err) => {
console.warn("Failed to get favicon from", url, err);
resolve();
});
}));
});
// Download all favicons and send them out
Promise.all(requests).then(() => {
filteredTabs = filteredTabs.map((tab) => {
const favIconUrl = tab.favIconUrl;
if (!favIconUrl) {
return tab;
}
if (favIconUrl.match(/^data:image/)) {
tab.favIconData = favIconUrl;
return tab
}
const data = favIconDataForUrl[favIconUrl];
if (data) {
tab.favIconData = data;
}
return tab;
});
--runningGetTabsQueries;
if (runningGetTabsQueries === 0) {
clearFavIconDataTimeoutId = setTimeout(() => {
favIconDataForUrl = {};
clearFavIconDataTimeoutId = 0;
}, 60000);
}
port.postMessage({
subsystem: "tabsrunner",
event: "gotTabs",
tabs: filteredTabs
});
});
});
});
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