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font visibility / RFP (#985)

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Thorin-Oakenpants 2020-08-01 11:03:17 +00:00 committed by GitHub
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commit 2809854802
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1 changed files with 12 additions and 4 deletions
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@ -804,7 +804,8 @@ user_pref("gfx.font_rendering.opentype_svg.enabled", false);
* [2] https://en.wikipedia.org/wiki/Graphite_(SIL) ***/
user_pref("gfx.font_rendering.graphite.enabled", false);
/* 1409: limit system font exposure to a whitelist [FF52+] [RESTART]
* If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed.
* If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed
* [NOTE] RFP in FF80+ restricts the whitelist to bundled and "Base Fonts" (see 4618)
* [WARNING] Creating your own probably highly-unique whitelist will raise your entropy.
* Eventually privacy.resistFingerprinting (see 4500) will cover this
* [1] https://bugzilla.mozilla.org/1121643 ***/
@ -911,7 +912,7 @@ user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!");
* [1] https://www.privacytools.io/#webrtc ***/
user_pref("media.peerconnection.enabled", false);
/* 2002: limit WebRTC IP leaks if using WebRTC
* In FF70+ these settings match Mode 4 (Mode 3 in older versions) (see [3])
* In FF70+ these settings match Mode 4 (Mode 3 in older versions), see [3]
* [TEST] https://browserleaks.com/webrtc
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1189041,1297416,1452713
* [2] https://wiki.mozilla.org/Media/WebRTC/Privacy
@ -1092,7 +1093,7 @@ user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is m
* Initially a Linux issue (high precision readout) that was fixed.
* However, it is still another metric for fingerprinting, used to raise entropy.
* e.g. do you have a battery or not, current charging status, charge level, times remaining etc
* [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code. see [1]
* [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code, see [1]
* [1] https://bugzilla.mozilla.org/1313580 ***/
// user_pref("dom.battery.enabled", false);
/* 2505: disable media device enumeration [FF29+]
@ -1387,7 +1388,7 @@ user_pref("privacy.firstparty.isolate", true);
/* 4002: enforce FPI restriction for window.opener [FF54+]
* [NOTE] Setting this to false may reduce the breakage in 4001
* FF65+ blocks postMessage with targetOrigin "*" if originAttributes don't match. But
* to reduce breakage it ignores the 1st-party domain (FPD) originAttribute. (see [2],[3])
* to reduce breakage it ignores the 1st-party domain (FPD) originAttribute, see [2],[3]
* The 2nd pref removes that limitation and will only allow communication if FPDs also match.
* [1] https://bugzilla.mozilla.org/1319773#c22
* [2] https://bugzilla.mozilla.org/1492607
@ -1461,6 +1462,7 @@ user_pref("privacy.firstparty.isolate", true);
** 1595823 - spoof audioContext sampleRate (FF72+)
** 1607316 - spoof pointer as coarse and hover as none (ANDROID) (FF74+)
** 1621433 - randomize canvas (previously FF58+ returned an all-white canvas) (FF78+)
** 1653987 - limit font visibility to bundled and "Base Fonts" (see 4618) (non-ANDROID) (FF80+)
***/
user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
/* 4501: enable privacy.resistFingerprinting [FF41+]
@ -1596,6 +1598,12 @@ user_pref("ui.systemUsesDarkTheme", 0); // [HIDDEN PREF]
// 4617: enforce prefers-reduced-motion as no-preference [FF63+] [RESTART]
// 0=no-preference, 1=reduce
user_pref("ui.prefersReducedMotion", 0); // [HIDDEN PREF]
// 4618: limit font visbility (non-ANDROID) [FF79+]
// Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts, see [1]
// 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts
// [NOTE] Bundled fonts are auto-allowed
// [1] https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc
user_pref("layout.css.font-visibility.level", 1);
// * * * /
// ***/