fichiers de config
policies.json dans /etc/firefox/policies/policies.json
user.pref dans ~/.mozilla/profile/XXXX/user.pref


/etc/firefox/syspref.js (obsolete -> policies.json)

<file js syspref.js>
// This file can be used to configure global preferences for Firefox
// Example: Homepage
//pref("browser.startup.homepage", "http://www.weebls-stuff.com/wab/");
# PREFERENCE GENERAL

# not working here 
# pref("browser.contentblocking.category","strict");


// Désactive l'affichage de 'Connaître vos droits' au premier lancement
pref("browser.rights.3.shown", true);

pref("browser.download.useDownloadDir",false);

#not working here pref("pref.browser.language.disable_button.up",false);
# pref("intl.accept_languages","fr-fr,fr,en-us,en");

# supprimer cookies en fin de session 2 - simple 0
pref("network.cookie.lifetimePolicy",0);

pref("privacy.donottrackheader.enabled",true);

#pref("privacy.trackingprotection.enabled",true);
#pref("privacy.trackingprotection.socialtracking.enabled",true);

# THEME


# Desactiver la barre de titres
pref("browser.tabs.inTitlebar", 1);
#pref("browser.tabs.drawInTitlebar",true);

# densite compacte
pref("browser.uidensity",1);

# Dark theme
#pref("ui.systemUsesDarkTheme",1);
#pref("browser.in-content.dark-mode",true);
# theme dark not working like this pref("extensions.activeThemeID","firefox-compact-dark@mozilla.org");

# autres modif via sebsauvage.net
# fenetre avertissement 
#pref("browser.tabs.warnOnClose",false);
#pref("browser.tabs.closeWindowWithLastTab",false);
# Desactiver prefetch / vie privee 
# 1 pas de telechargement en avance
pref("network.prefetch-next",false);
# 2 pas de DNS en avance
pref("network.dns.disablePrefetch",true);
# Accelerer firefox en utilisant la ram de preference
pref("browser.cache.memory.capacity",256000);
pref("browser.cache.memory.max_entry_size",50000);
pref("browser.cache.disk.enable",false);
# desactivation pocket
pref("extensions.pocket.enabled",false);

# Securite
# eviter le phishing avec unicode en affichant les codes
pref("network.IDN_show_punycode",true);
# afficher url completes
pref("browser.urlbar.trimURLs", false);
# zoom sur les pages
pref("browser.ui.zoom.force-user-scalable", true);
# desactiver autorefresh
pref("accessibility.blockautorefresh", true);
# desactiver acces presse papier par sites
pref("dom.event.clipboardevents.enabled", false);

# Reduction frequence sauvegarde
pref("browser.sessionstore.interval",120000);

# desactiver pop-up mise en plein ecran
pref("full-screen-api.warning.timeout",0);

# desactiver autoplay des videos
pref("media.autoplay.enabled.user-gestures-needed",true);
pref("media.autoplay.allow-muted",false);

# Ne pas utiliser dossier de téléchargement
pref("browser.download.useDownloadDir", false);

# Cacher des raccourcis sponso
pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);


# Startup page
pref("startup.homepage_override_url","");

# Desactiver qu'est-ce qu'il y a de nouveau
pref("browser.messaging-system.whatsNewPanel.enabled", false);

# Desactiver bonjour
pref("browser.aboutwelcome.enabled", false);

# Desactiver + a propos de mozilla
pref("browser.preferences.moreFromMozilla", false);

</file>

forcer fr-fr dans /usr/lib/firefox/distribution/distribution.ini en ajoutant
<file>
pref.browser.language.disable_button.up=false
intl.accept_languages="fr-FR,fr,en-us,en"
</file>
et modifier
<file>
intl.locale.requested="fr,en-US"
</file>

Reste à trouver comment mettre le mode de blocage strict et le thème sombre

== extensions ==

À mettre :
  * ublock origin (et adblock pour virer le non utile suivant les besoins)
  * privacy badger
  * decentraleye (pour éviter de récupérer les données inutiles)
  * facebook container
  * https everywhere
  * [[https://addons.mozilla.org/fr/firefox/addon/dictionnaire-fran%C3%A7ais1/ | Dictionnaire français]]

Moins de blabla
  * decentraleye : core/main.js commenter chrome.runtimeblablabla
  * privacy badger

Pour pouvoir les désinstaller par la suite
/usr/lib/firefox/distribution/extensions

Pour bloquer la désinstallation par la suite
/usr/lib/firefox/browser/extensions

/etc/firefox/policies

Policies
    about:policies
    /etc/firefox/policies/policies.json
    /usr/lib/firefox/distribution/policies.json
    https://github.com/mozilla/policy-templates/blob/master/README.md
    désactiver page d'update en indiquant une url vide
<code>
{
  "policies": {
        "DisableAppUpdate": true,
        "OverridePostUpdatePage": "",
        "DisableFirefoxStudies": true,
        "DisableTelemetry": true,
        "UserMessaging": {
          "WhatsNew": false,
          "ExtensionRecommendations": false,
          "FeatureRecommendations": false,
          "SkipOnboarding": true 
          }
      }
}
</code>

<file json policies.json>
{
  "policies": {
    "DisableAppUpdate": true,
    "Homepage": {
      "URL": "http://desclicks.net"
     },
    "Preferences": {
      "browser.policies.loglevel": {
        "Value": "debug",
        "Status": "locked"
      },
      "browser.tabs.warnOnClose": {
        "Value": false,
        "Status": "default"
      },
       "browser.uidensity": {
	        "Value": 1
        },
        "browser.tabs.inTitlebar": {
	        "Value": 1
        }          
    },
    "DisablePocket": true,
    "DisableTelemetry": true,

    "FirefoxHome": {
      "Search": true,
      "TopSites": false,
      "SponsoredTopSites": false,
      "Highlights":  false,
      "Pocket":  false,
      "SponsoredPocket":  false,
      "Snippets": false,
      "Locked": false 
    },

    "NoDefaultBookmarks": true,

    "OfferToSaveLogins": false,

     "OverrideFirstRunPage": "",
     "OverridePostUpdatePage": "",
     "UserMessaging": {
        "WhatsNew": false,
        "ExtensionRecommendations": false,
        "FeatureRecommendations": false,
        "UrlbarInterventions": false,
        "SkipOnboarding": true,
        "MoreFromMozilla":false
      },

     "DisableFeedbackCommands": true,
     "DisableFirefoxAccounts": true,
     "DisableBuiltinPDFViewer": true,

     "SanitizeOnShutdown": true,

     "ShowHomeButton": true,

     "RequestedLocales": ["fr-FR", "fr"],
     "PromptForDownloadLocation": true,
     "UseSystemPrintDialog": true,
    
     "Extensions": {
      "Install": ["https://addons.mozilla.org/firefox/downloads/latest/dictionnaire-francais1",	    
                  "https://addons.mozilla.org/firefox/downloads/latest/sponsorblock",
                  "https://addons.mozilla.org/firefox/downloads/latest/decentraleyes",
                  "https://addons.mozilla.org/firefox/downloads/latest/facebook-container",
                  "https://addons.mozilla.org/firefox/downloads/latest/grammalecte-fr"]
    },
    
    "ExtensionSettings" : {
          "uBlock0@raymondhill.net": {
          "installation_mode": "normal_installed",
           "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
           }
    },

    "3rdparty": {
      "Extensions": {
        "uBlock0@raymondhill.net": {
          "adminSettings": {
            "selectedFilterLists": [
              "ublock-privacy",
              "ublock-badware",
              "ublock-filters",
	      "ublock-badlists",
              "user-filters",
	      "ublock-quick-fixes",
	      "ublock-abuse",
              "ublock-unbreak",
	      "adguard-generic",
	      "adguard-mobile",
	      "easylist",
	      "adguard-spyware",
	      "adguard-spyware-url",
	      "block-lan",
	      "easyprivacy",
	      "urlhaus-1",
	      "curben-phishing",
	      "curben-pup",
	      "adguard-annoyance",
	      "adguard-social",
	      "fanboy-thirdparty_social",
              "fanboy-cookiemonster",
              "fanboy-annoyance",
              "fanboy-social",
              "ublock-social",
              "ublock-annoyances",
	      "dpollock-0",
	      "plowe-0",
	      "ara-0",
	      "DEU-0",
	      "FRA-0"
            ]
          }
        }
      }
    }
    



  }
}
</file>

<file>
"SearchEngines": {
      "Add": [
        {
          "Name": "StartPage fr",
          "URLTemplate": "https://startpage.com/fr",
          "Method": "POST",
          "IconURL": "https://www.startpage.com/sp/cdn/favicons/apple-touch-icon-57x57--default.png",
          "Alias": "SP",
          "Description": "Startpage, Le moteur de recherche le plus privé au monde."
        }
      ]
    },
</file>

https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig