Apparentemente su Firefox 60 e versioni successive né il trucco xpinstall.signatures.required
né il config.js delineati sopra funzionano (Mozilla, chiedi per favore!).
Il forum russo sopra citato apparentemente menziona una soluzione anche per queste versioni di Firefox. Quindi inseriscilo in config.js invece che poi salvi in C: \ Programmi \ Mozilla Firefox
//
try {(code => {
var {classes: Cc, interfaces: Ci, utils: Cu} = Components;
var jsval, evl = true, re = e => Cu.reportError(e), imp = name => {try {
return Cu.import(`resource://gre/modules/addons/${name}.jsm`, {});
} catch(ex) {}}
if ((jsval = imp("AddonSettings"))) {
jsval.AddonSettings = {ADDON_SIGNING: false, REQUIRE_SIGNING: false, ALLOW_LEGACY_EXTENSIONS: true};
try {evl = jsval.eval("this") === jsval;} catch(ex) {evl = false;}
}
var jsvals = ["XPIProvider", "XPIInstall"].map(imp).filter(i => i);
jsvals[0].AddonSettings && lockPref("extensions.allow-non-mpc-extensions", true);
jsvals[0].signaturesNotRequired = true;
if (evl) return jsvals.forEach(jsval => {try {jsval.eval(code);} catch(ex) {re(ex);}});
var sl = Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader);
Cu.importGlobalProperties(["URL", "Blob"]); var url = URL.createObjectURL(new Blob([(code)]));
jsvals.forEach(jsval => {try {sl.loadSubScript(url, jsval);} catch(ex) {re(ex);}});
})(String.raw`((vzss, pckg) => {
var trueDesc = {enumerable: true, value: true};
typeof Extension == "function" && Object.defineProperty(Extension.prototype, "experimentsAllowed", trueDesc);
"AddonInternal" in this && Object.defineProperty(AddonInternal.prototype, "providesUpdatesSecurely", trueDesc);
this.isDisabledLegacy = () => false;
if ("XPIDatabase" in this) this.XPIDatabase.isDisabledLegacy = () => false;
try {SIGNED_TYPES.clear();} catch(ex) {};
if (!vzss && !pckg) return;
var re = /\x06\x03U\x04\x03..(\{[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\}|[a-z0-9-\._]*\@[a-z0-9-\._]+)0\x82\x02"0\r\x06\t/i;
var getUUID = () => {
var gen = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator);
return (getUUID = () => gen.generateUUID().toString())();
}
var getIdFromString = str => {
var match = str && str.match(re);
return match ? match[1] : getUUID();
}
var getState = arg => ({
signedState: AddonManager.SIGNEDSTATE_NOT_REQUIRED,
cert: typeof arg == "object" ? arg : {commonName: arg}
});
var checkAddon = addon => {
if (addon.id || (
"_installLocation" in addon
? addon._installLocation.name == KEY_APP_TEMPORARY
: addon.location.isTemporary
))
return getState(null);
}
var getRoot = () =>
!AppConstants.MOZ_REQUIRE_SIGNING && Services.prefs.getBoolPref(PREF_XPI_SIGNATURES_DEV_ROOT, false)
? Ci.nsIX509CertDB.AddonsStageRoot : Ci.nsIX509CertDB.AddonsPublicRoot;
if (vzss) {
var getURI = file => {
var jsval = Cu.import("resource://gre/modules/addons/XPIProvider.jsm", {});
return (getURI = file => jsval.getURIForResourceInFile(file, "META-INF/mozilla.rsa"))(file);
}
var getIdFromFile = file => {
var str, is = {close() {}}, sis = {close() {}};
try {
is = Services.io.newChannelFromURIWithLoadInfo(getURI(file), null).open();
sis = Cc["@mozilla.org/scriptableinputstream;1"].createInstance(Ci.nsIScriptableInputStream);
sis.init(is);
str = sis.readBytes(sis.available());
} catch(ex) {}
sis.close(); is.close();
return getIdFromString(str);
}
this.verifyZipSignedState = function verifyZipSignedState(aFile, aAddon) {
var res = checkAddon(aAddon);
return res ? Promise.resolve(res) : new Promise(resolve => {
var callback = {openSignedAppFileFinished(rv, zipReader, cert) {
zipReader && zipReader.close();
resolve(getState(cert || getIdFromFile(aFile)));
}};
gCertDB.openSignedAppFileAsync(getRoot(), aFile, callback.wrappedJSObject = callback);
});
}
}
if (pckg) Package.prototype.verifySignedState = function verifySignedState(addon) {
var res = checkAddon(addon);
return res ? Promise.resolve(res) : new Promise(resolve =>
this.verifySignedStateForRoot(addon, getRoot()).then(({cert}) => {
if (cert)
resolve(getState(cert));
else
this.readBinary("META-INF", "mozilla.rsa").then(
buffer => resolve(getState(
getIdFromString(String.fromCharCode(...new Uint8Array(buffer)))
)),
() => resolve(getState(getUUID()))
);
}, Cu.reportError)
);
}
})(
"verifyZipSignedState" in this, typeof Package == "function"
);`)} catch(err) {
err.message != "Components is not defined" && Components.utils.reportError(err);
}
Quindi devi aggiungerlo al file config-prefs.js salvato in C: \ Programmi \ Mozilla Firefox \ defaults \ pref
pref("general.config.obscure_value", 0);
pref("general.config.filename", "config.js");
pref("general.config.sandbox_enabled", false);
È stato testato per funzionare su FF 66.0.3. Sfortunatamente non riporterà magicamente i tuoi addon e temi, ma almeno riattiva l'opzione di reinstallarli. Meglio di tutto ciò che Mozilla ha da offrire comunque, poiché non sembrano preoccuparsene in particolare nonostante il fatto che i loro forum siano inondati di lamentele per questo problema.