251 lines
7.9 KiB
Nix
251 lines
7.9 KiB
Nix
{ config, lib, pkgs, ... }:
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# todo : this needs to be cleaned up
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with lib;
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let
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cfg = config.programs.custom.browser;
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library = import ../../library { inherit pkgs lib; };
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chromiumBin = "${pkgs.chromium}/bin/chromium";
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chromeBin = "${pkgs.google-chrome}/bin/google-chrome-stable";
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firefoxBin = "${pkgs.firefox}/bin/firefox";
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tarBin = "${pkgs.gnutar}/bin/tar";
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# desktop file
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# ------------
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# makes it possible to be used by other programs
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desktopFile = bin:
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let browserName = bin.name;
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in pkgs.writeTextFile {
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name = "${browserName}.desktop";
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destination = "/share/applications/${browserName}.desktop";
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text = ''
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[Desktop Entry]
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Type=Application
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Exec=${bin}/bin/${browserName} %U
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Icon=chromium
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Comment=An open source web browser from Google
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Terminal=false
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Name=${browserName}
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GenericName=Web browser
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MimeType=text/html;text/xml;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/webcal;x-scheme-handler/about
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Categories=Network;WebBrowser
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StartupWMClass=${browserName}
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'';
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};
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killBrowser = name:
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pkgs.writeShellScriptBin "${name}-kill" "sudo killall -9 -u ${name}";
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cleanBrowser = name: browser: home: homeBackup:
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let
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backupFile = "${homeBackup}.tar.lzma";
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rolloutFile = "${home}.tar.lzma";
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lockFile = "${home}-lock";
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in pkgs.writeShellScriptBin "${name}-clean" # sh
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''
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sudo killall -9 -u ${name}
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sudo rm -f ${lockFile}
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sudo rm -rf ${home}
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'';
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createBrowser = name: user: browser: home: homeBackup:
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let
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backupFile = "${homeBackup}.tar.lzma";
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rolloutFile = "${home}.tar.lzma";
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lockFile = "${home}-lock";
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in pkgs.writeShellScriptBin "${name}" # sh
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''
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# set -x
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if [[ ! -e ${lockFile} ]]
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then
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# rollout backup
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if [[ -e ${backupFile} ]]
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then
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if [[ ! -d ${home} ]]
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then
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# todo : use make user
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sudo mkdir -p ${home}
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sudo chown -R ${user}:users ${home}
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fi
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cp ${backupFile} ${rolloutFile}
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sudo -u ${user} ${tarBin} xf ${rolloutFile} --directory ${home}
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rm ${rolloutFile}
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touch ${lockFile}
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fi
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fi
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sudo -u ${user} ${browser}
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'';
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browserExecutableList = let
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allBrowser = flip mapAttrsToList cfg.configList (name: config:
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let
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browser = if config.browserType == "chrome" then
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''${chromiumBin} "$@"''
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else if config.browserType == "google" then
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''${chromeBin} "$@"''
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else
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''${firefoxBin} "$@"'';
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in createBrowser name config.user browser config.home config.homeBackup);
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xclipBrowser = [
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(pkgs.writeShellScriptBin "copy-to-xclip" # sh
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''
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echo "$*" | ${pkgs.xclip}/bin/xclip
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'')
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];
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in allBrowser ++ xclipBrowser;
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createBackupScript = name: home: backupHome:
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pkgs.writeShellScriptBin "${name}-backup" # sh
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''
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sudo -u ${name} \
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${tarBin} \
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--exclude=.cache \
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--exclude=Downloads \
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--create \
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--verbos \
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--lzma \
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--file ${home}.tar.lzma \
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--directory ${home} \
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.
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cp ${home}.tar.lzma ${backupHome}.tar.lzma
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'';
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allBackupScripts = let
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filteredConfigs =
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filterAttrs (name: browserConfig: browserConfig.homeBackup != null)
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cfg.configList;
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in mapAttrsToList (name: browserConfig:
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createBackupScript name browserConfig.home browserConfig.homeBackup)
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filteredConfigs;
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allCleanScripts = let
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filteredConfigs =
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filterAttrs (name: browserConfig: browserConfig.homeBackup != null)
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cfg.configList;
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in mapAttrsToList (name: browserConfig:
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cleanBrowser name name browserConfig.home browserConfig.homeBackup)
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filteredConfigs;
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allKillScripts = mapAttrsToList (name: _: killBrowser name) cfg.configList;
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# browser chooser
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# ---------------
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browserSelect = pkgs.writeScriptBin "browser-select" ''
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# select a browser using dmenu
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# ----------------------------
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BROWSER=$( echo -e "${
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lib.concatMapStringsSep "\\n" (bin: bin.name) browserExecutableList
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}" \
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| ${pkgs.rofi}/bin/rofi -dmenu )
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# start selected browser
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# ----------------------
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case $BROWSER in
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${lib.concatStringsSep "\n" (flip map browserExecutableList
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(bin: "${bin.name}) export BIN=${bin}/bin/${bin.name} ;;"))}
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esac
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$BIN "$@"
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'';
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in {
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options.programs.custom.browser = {
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enable = mkEnableOption "enable browsers";
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configList = mkOption {
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type = with types;
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attrsOf (submodule ({ name, ... }: {
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options = {
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browserType = mkOption {
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type = with types; enum [ "firefox" "chrome" "google" ];
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default = "chrome";
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description = ''
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the type of browser which is simulated
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'';
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};
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home = mkOption {
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type = with types; str;
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description = ''
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Home of the browser.
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'';
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};
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gpu = mkOption {
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type = with types; bool;
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default = true;
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description = ''
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add browser user to video group so give browser rights to use gpu.
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see : chrome://gpu/
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'';
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};
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user = mkOption {
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default = name;
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type = with types; str;
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description = ''
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user to run the browser as
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'';
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};
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sudoUsers = mkOption {
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default = [ config.users.users.mainUser.name ];
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type = with types; listOf str;
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description = ''
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user allowed to run sudo without password to start the browser
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'';
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};
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homeBackup = mkOption {
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type = with types; nullOr str;
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default = null;
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example = "~/.my-browser-backup";
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description = ''
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backup of the home, which gets rolled out if the
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home does not exists. usefull for homes in tmpfs.
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dont use file endings!
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'';
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};
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};
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}));
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};
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};
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config = mkIf cfg.enable {
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# add sudo rights
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security.sudo.extraConfig = let
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extraRules = flip mapAttrsToList cfg.configList (name: values:
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concatStringsSep "" (map (sudoUser: ''
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# sudo configuration to control browser
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${sudoUser} ALL=(${values.user}) NOPASSWD: ALL
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${sudoUser} ALL=(root) NOPASSWD: /run/current-system/sw/bin/mkdir -p ${values.home}
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${sudoUser} ALL=(root) NOPASSWD: /run/current-system/sw/bin/chown -R ${values.user}\:users ${values.home}
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${sudoUser} ALL=(root) NOPASSWD: /run/current-system/sw/bin/killall -9 -u ${name}
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${sudoUser} ALL=(root) NOPASSWD: /run/current-system/sw/bin/rm -rf ${values.home}
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${sudoUser} ALL=(root) NOPASSWD: /run/current-system/sw/bin/rm -f ${values.home}-lock
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'') values.sudoUsers));
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in lib.concatStringsSep "\n" extraRules;
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# create users
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users.users = flip mapAttrs cfg.configList (name: config: {
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home = config.home;
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createHome = true;
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initialPassword = "${name}-browser";
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shell = pkgs.bashInteractive;
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isNormalUser = true;
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group = "users";
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# enable video usage
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extraGroups = if config.gpu then [ "video" "audio" ] else [ "audio" ];
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});
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# add groups to mainUser
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system.custom.mainUser.extraGroups = builtins.attrNames cfg.configList;
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environment.systemPackages = [ browserSelect (desktopFile browserSelect) ]
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++ browserExecutableList
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++ (map (bin: desktopFile bin) browserExecutableList) ++ allBackupScripts
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++ allCleanScripts ++ allKillScripts;
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};
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}
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