mozilla-central/toolkit/components/cleardata/tests/unit/test_fingerprinting_protection_state.js (file symbol)

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Test Info: Warnings

/* Any copyright is dedicated to the Public Domain.
"use strict";
do_get_profile();
add_task(async function test_clear_fingerprinting_protection_state() {
info("Enabling fingerprinting randomization");
Services.prefs.setBoolPref("privacy.resistFingerprinting", true);
let uri = Services.io.newURI("https://example.com");
let principal = Services.scriptSecurityManager.createContentPrincipal(
uri,
{}
);
let channel = Services.io.newChannelFromURI(
uri,
null, // aLoadingNode
principal,
null, // aTriggeringPrincipal
Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
Ci.nsIContentPolicy.TYPE_DOCUMENT
);
// Test nsIClearDataService.deleteDataFromHost
let key = Services.rfp.testGenerateRandomKey(channel);
let keyStr = key.map(bytes => bytes.toString(16).padStart(2, "0")).join("");
// Verify that the key remains the same without clearing.
key = Services.rfp.testGenerateRandomKey(channel);
let keyStrAgain = key
.map(bytes => bytes.toString(16).padStart(2, "0"))
.join("");
Assert.equal(
keyStr,
keyStrAgain,
"The fingerprinting randomization key remain the same without clearing."
);
info("Trigger the deleteDataFromHost");
await new Promise(resolve => {
Services.clearData.deleteDataFromHost(
"example.com",
true /* user request */,
Ci.nsIClearDataService.CLEAR_FINGERPRINTING_PROTECTION_STATE,
_ => {
resolve();
}
);
});
key = Services.rfp.testGenerateRandomKey(channel);
let newKeyStr = key
.map(bytes => bytes.toString(16).padStart(2, "0"))
.join("");
Assert.notEqual(
keyStr,
newKeyStr,
"The fingerprinting randomization key is reset properly."
);
// Test nsIClearDataService.deleteDataFromBaseDomain
keyStr = newKeyStr;
info("Trigger the deleteDataFromBaseDomain");
await new Promise(resolve => {
Services.clearData.deleteDataFromBaseDomain(
"example.com",
true /* user request */,
Ci.nsIClearDataService.CLEAR_FINGERPRINTING_PROTECTION_STATE,
_ => {
resolve();
}
);
});
key = Services.rfp.testGenerateRandomKey(channel);
newKeyStr = key.map(bytes => bytes.toString(16).padStart(2, "0")).join("");
Assert.notEqual(
keyStr,
newKeyStr,
"The fingerprinting randomization key is reset properly."
);
// Test nsIClearDataService.deleteDataFromPrincipal
keyStr = newKeyStr;
await new Promise(resolve => {
Services.clearData.deleteDataFromPrincipal(
principal,
true /* user request */,
Ci.nsIClearDataService.CLEAR_FINGERPRINTING_PROTECTION_STATE,
_ => {
resolve();
}
);
});
key = Services.rfp.testGenerateRandomKey(channel);
newKeyStr = key.map(bytes => bytes.toString(16).padStart(2, "0")).join("");
Assert.notEqual(
keyStr,
newKeyStr,
"The fingerprinting randomization key is reset properly."
);
// Test nsIClearDataService.deleteData
keyStr = newKeyStr;
// Generate a key for another site.
uri = Services.io.newURI("https://example.org");
principal = Services.scriptSecurityManager.createContentPrincipal(uri, {});
let channelAnother = Services.io.newChannelFromURI(
uri,
null, // aLoadingNode
principal,
null, // aTriggeringPrincipal
Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL,
Ci.nsIContentPolicy.TYPE_DOCUMENT
);
key = Services.rfp.testGenerateRandomKey(channelAnother);
let keyStrAnother = key
.map(bytes => bytes.toString(16).padStart(2, "0"))
.join("");
info("Trigger the deleteData");
await new Promise(resolve => {
Services.clearData.deleteData(
Ci.nsIClearDataService.CLEAR_FINGERPRINTING_PROTECTION_STATE,
_ => {
resolve();
}
);
});
key = Services.rfp.testGenerateRandomKey(channel);
newKeyStr = key.map(bytes => bytes.toString(16).padStart(2, "0")).join("");
Assert.notEqual(
keyStr,
newKeyStr,
"The fingerprinting randomization key is reset properly."
);
// Verify whether deleteData clears another site as well.
key = Services.rfp.testGenerateRandomKey(channelAnother);
newKeyStr = key.map(bytes => bytes.toString(16).padStart(2, "0")).join("");
Assert.notEqual(
keyStrAnother,
newKeyStr,
"The fingerprinting randomization key is reset properly for another site."
);
Services.prefs.clearUserPref("privacy.resistFingerprinting");
});