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"use strict";
{
let marker = JSON.stringify(uuid());
let allUrls = ["<all_urls>"];
let Scripts = {
references: new Set(),
opts: {
js: [{}],
allFrames: true,
matchAboutBlank: true,
runAt: "document_start"
},
async init() {
let opts = Object.assign({}, this.opts);
opts.js = [{file: "/content/dynamicNS.js"}];
opts.matches = allUrls;
delete opts.excludedMatches;
this._stubScript = await browser.contentScripts.register(opts);
this.init = this.forget;
},
forget() {
for (let script of [...this.references]) {
script.unregister();
this.references.delete(script);
}
},
debug: false,
trace(code) {
return this.debug
? `console.debug("Executing child policy on %s", document.URL, ${JSON.stringify(code)});${code}`
: code
;
},
async register(code, matches, excludeMatches) {
debug("Registering child policy.", code, matches, excludeMatches);
if (!matches.length) return;
try {
let opts = Object.assign({}, this.opts);
opts.js[0].code = this.trace(code);
opts.matches = matches;
if (excludeMatches && excludeMatches.length) {
opts.excludeMatches = excludeMatches;
}
this.references.add(await browser.contentScripts.register(opts));
} catch (e) {
error(e);
}
},
buildPerms(perms, finalizeSetup = false) {
if (typeof perms !== "string") {
perms = JSON.stringify(perms);
}
return finalizeSetup
? `ns.setup(${perms}, ${marker});`
: `ns.config.CURRENT = ${perms};`
;
}
};
let flatten = arr => arr.reduce((a, b) => a.concat(Array.isArray(b) ? flatten(b) : b), []);
let protocolRx = /^(\w+):/i;
let pathRx = /(?:[^:/]\/|:\/{3})$/;
let portRx = /:\d+(?=\/|$)/;
let validMatchPatternRx = /^(?:\*|(?:http|ws|ftp)s?|file):\/\/(?:\*\.)?(?:[\w\u0100-\uf000][\w\u0100-\uf000.-]*)?\/(\*|[^*]*)$/;
let siteKey2MatchPattern = site => {
let hasProtocol = site.match(protocolRx);
let mp = site;
if (hasProtocol) {
mp = Sites.cleanUrl(mp);
if (!mp) return false;
} else {
let protocol = Sites.isSecureDomainKey(site) ? "https://" : "*://";
let hostname = Sites.toggleSecureDomainKey(site, false).replace(portRx, '');
if (!tld.preserveFQDNs) hostname = tld.normalize(hostname);
mp = `${protocol}*.${hostname}`;
if (!hostname.includes("/")) mp += "/";
}
return validMatchPatternRx.test(mp) && (
mp.endsWith("/") ? `${mp}*` : [mp, `${mp}?*`, `${mp}#*`]);
};
let withFQDNs = patterns => {
return tld.preserveFQDNs ? patterns : patterns.concat(
patterns.map(p => p.replace(/^(?:\w+|\*):\/\/[^/]*[^./]/, '$&.'))
);
}
let siteKeys2MatchPatterns = keys =>
keys && withFQDNs(flatten(keys.map(siteKey2MatchPattern))
.filter(p => !!p))
|| [];
var ChildPolicies = {
async storeTabInfo(tabId, info) {
try {
let preamble = info ? `${marker} + ${JSON.stringify(JSON.stringify([info]))} + ${marker} + "," + ` : "";
await browser.tabs.executeScript(tabId, {
code: `window.name = ${preamble}window.name.split(${marker} + ",").pop();`,
allFrames: true,
matchAboutBlank: true,
runAt: "document_start",
});
} catch (e) {
error(e);
}
},
async update(policy, debug) {
if (debug !== "undefined") Scripts.debug = debug;
await Scripts.init();
if (!policy.enforced) {
await Scripts.register(`ns.setup(null, ${marker});`, allUrls);
return;
}
let serialized = policy.dry ? policy.dry(true) : policy;
let permsMap = new Map();
let trusted = JSON.stringify(serialized.TRUSTED);
let untrusted = JSON.stringify(serialized.UNTRUSTED);
let presets = {
trusted,
untrusted,
temp: trusted
};
// map presets to site keys
for (let [container, perms] of Object.entries(presets)) {
let newKeys = serialized.sites[container];
if (!(newKeys && newKeys.length)) continue;
let keys = permsMap.get(perms);
if (keys) {
newKeys = keys.concat(newKeys);
}
permsMap.set(perms, newKeys);
}
// map custom permissions to site keys
for (let [key, perms] of Object.entries(serialized.sites.custom)) {
let permsKey = JSON.stringify(perms);
let keys = permsMap.get(permsKey);
if (keys) {
keys.push(key);
} else {
permsMap.set(permsKey, [key]);
}
}
// compute exclusions
let permsMapEntries = [...permsMap];
let excludeMap = new Map();
for (let [perms, keys] of permsMapEntries) {
excludeMap.set(perms, siteKeys2MatchPatterns(flatten(
permsMapEntries.filter(([other]) => other !== perms)
.map(([otherPerms, otherKeys]) => otherKeys))
.filter(k => k && k.includes("/") && keys.some(by => Sites.isImplied(k, by)))
));
}
// register new content scripts
for (let [perms, keys] of [...permsMap]) {
await Scripts.register(Scripts.buildPerms(perms), siteKeys2MatchPatterns(keys), excludeMap.get(perms));
}
await Scripts.register(Scripts.buildPerms(serialized.DEFAULT, true), allUrls);
},
getForDocument(policy, url, context = null) {
return {
CURRENT: policy.get(url, context).perms.dry(),
DEFAULT: policy.DEFAULT.dry(),
MARKER: marker
};
},
async updateFrame(tabId, frameId, perms, defaultPreset) {
let code = Scripts.buildPerms(perms) + Scripts.buildPerms(defaultPreset, true);
await browser.tabs.executeScript(tabId, {
code,
frameId,
matchAboutBlank: true,
runAt: "document_start"
});
}
};
}
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