diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix index b166e7bf01f..c059c2bb002 100644 --- a/maintainers/maintainer-list.nix +++ b/maintainers/maintainer-list.nix @@ -4657,7 +4657,7 @@ name = "Julien Dehos"; }; julm = { - email = "julm+nix@sourcephile.fr"; + email = "julm+nixpkgs@sourcephile.fr"; github = "ju1m"; githubId = 21160136; name = "Julien Moutinho"; diff --git a/nixos/doc/manual/release-notes/rl-2105.xml b/nixos/doc/manual/release-notes/rl-2105.xml index 6dd14d6051e..f485eb114cc 100644 --- a/nixos/doc/manual/release-notes/rl-2105.xml +++ b/nixos/doc/manual/release-notes/rl-2105.xml @@ -662,6 +662,24 @@ self: super: The option's description was incorrect regarding ownership management and has been simplified greatly. + + + The security.apparmor module, + for the AppArmor + Mandatory Access Control system, + has been substantialy improved along with related tools, + so that module maintainers can now more easily write AppArmor profiles for NixOS. + The most notable change on the user-side is the new option , + replacing the previous profiles option + to provide a way to disable a profile + and to select whether to confine in enforce mode (default) + or in complain mode (see journalctl -b --grep apparmor). + Before enabling this module, either directly + or by importing <nixpkgs/nixos/modules/profiles/hardened.nix>, + please be sure to read the documentation of security.apparmor.enable, + and especially the part about . + + The GNOME desktop manager once again installs gnome3.epiphany by default. diff --git a/nixos/modules/config/fonts/fontconfig.nix b/nixos/modules/config/fonts/fontconfig.nix index 6e7b8c4b88a..72827c5abaa 100644 --- a/nixos/modules/config/fonts/fontconfig.nix +++ b/nixos/modules/config/fonts/fontconfig.nix @@ -448,6 +448,40 @@ in (mkIf cfg.enable { environment.systemPackages = [ pkgs.fontconfig ]; environment.etc.fonts.source = "${fontconfigEtc}/etc/fonts/"; + security.apparmor.includes."abstractions/fonts" = '' + # fonts.conf + r ${pkg.out}/etc/fonts/fonts.conf, + + # fontconfig default config files + r ${pkg.out}/etc/fonts/conf.d/*.conf, + + # 00-nixos-cache.conf + r ${cacheConf}, + + # 10-nixos-rendering.conf + r ${renderConf}, + + # 50-user.conf + ${optionalString cfg.includeUserConf '' + r ${pkg.out}/etc/fonts/conf.d.bak/50-user.conf, + ''} + + # local.conf (indirect priority 51) + ${optionalString (cfg.localConf != "") '' + r ${localConf}, + ''} + + # 52-nixos-default-fonts.conf + r ${defaultFontsConf}, + + # 53-no-bitmaps.conf + r ${rejectBitmaps}, + + ${optionalString (!cfg.allowType1) '' + # 53-nixos-reject-type1.conf + r ${rejectType1}, + ''} + ''; }) (mkIf cfg.enable { fonts.fontconfig.confPackages = [ confPkg ]; diff --git a/nixos/modules/config/malloc.nix b/nixos/modules/config/malloc.nix index a3eb55d8a42..fc35993b5a8 100644 --- a/nixos/modules/config/malloc.nix +++ b/nixos/modules/config/malloc.nix @@ -87,5 +87,12 @@ in environment.etc."ld-nix.so.preload".text = '' ${providerLibPath} ''; + security.apparmor.includes = { + "abstractions/base" = '' + r /etc/ld-nix.so.preload, + r ${config.environment.etc."ld-nix.so.preload".source}, + mr ${providerLibPath}, + ''; + }; }; } diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix index 3055459e781..d9cc86fcd4e 100644 --- a/nixos/modules/module-list.nix +++ b/nixos/modules/module-list.nix @@ -199,7 +199,6 @@ ./rename.nix ./security/acme.nix ./security/apparmor.nix - ./security/apparmor-suid.nix ./security/audit.nix ./security/auditd.nix ./security/ca.nix diff --git a/nixos/modules/security/apparmor-suid.nix b/nixos/modules/security/apparmor-suid.nix deleted file mode 100644 index 6c479e070e2..00000000000 --- a/nixos/modules/security/apparmor-suid.nix +++ /dev/null @@ -1,49 +0,0 @@ -{ config, lib, pkgs, ... }: -let - cfg = config.security.apparmor; -in -with lib; -{ - imports = [ - (mkRenamedOptionModule [ "security" "virtualization" "flushL1DataCache" ] [ "security" "virtualisation" "flushL1DataCache" ]) - ]; - - options.security.apparmor.confineSUIDApplications = mkOption { - type = types.bool; - default = true; - description = '' - Install AppArmor profiles for commonly-used SUID application - to mitigate potential privilege escalation attacks due to bugs - in such applications. - - Currently available profiles: ping - ''; - }; - - config = mkIf (cfg.confineSUIDApplications) { - security.apparmor.profiles = [ (pkgs.writeText "ping" '' - #include - /run/wrappers/bin/ping { - #include - #include - #include - - capability net_raw, - capability setuid, - network inet raw, - - ${pkgs.stdenv.cc.libc.out}/lib/*.so mr, - ${pkgs.libcap.lib}/lib/libcap.so* mr, - ${pkgs.attr.out}/lib/libattr.so* mr, - - ${pkgs.iputils}/bin/ping mixr, - - #/etc/modules.conf r, - - ## Site-specific additions and overrides. See local/README for details. - ##include - } - '') ]; - }; - -} diff --git a/nixos/modules/security/apparmor.nix b/nixos/modules/security/apparmor.nix index cfc65b347bc..dfa695b81bb 100644 --- a/nixos/modules/security/apparmor.nix +++ b/nixos/modules/security/apparmor.nix @@ -1,59 +1,207 @@ { config, lib, pkgs, ... }: let - inherit (lib) mkIf mkOption types concatMapStrings; + inherit (builtins) attrNames head map match readFile; + inherit (lib) types; + inherit (config.environment) etc; cfg = config.security.apparmor; + mkDisableOption = name: lib.mkEnableOption name // { + default = true; + example = false; + }; + enabledPolicies = lib.filterAttrs (n: p: p.enable) cfg.policies; in { - options = { - security.apparmor = { - enable = mkOption { - type = types.bool; - default = false; - description = "Enable the AppArmor Mandatory Access Control system."; - }; - profiles = mkOption { - type = types.listOf types.path; - default = []; - description = "List of files containing AppArmor profiles."; - }; - packages = mkOption { - type = types.listOf types.package; - default = []; - description = "List of packages to be added to apparmor's include path"; - }; - }; - }; + imports = [ + (lib.mkRenamedOptionModule [ "security" "virtualization" "flushL1DataCache" ] [ "security" "virtualisation" "flushL1DataCache" ]) + (lib.mkRemovedOptionModule [ "security" "apparmor" "confineSUIDApplications" ] "Please use the new options: `security.apparmor.policies..enable'.") + (lib.mkRemovedOptionModule [ "security" "apparmor" "profiles" ] "Please use the new option: `security.apparmor.policies'.") + apparmor/includes.nix + apparmor/profiles.nix + ]; - config = mkIf cfg.enable { - environment.systemPackages = [ pkgs.apparmor-utils ]; + options = { + security.apparmor = { + enable = lib.mkEnableOption ''the AppArmor Mandatory Access Control system. - boot.kernelParams = [ "apparmor=1" "security=apparmor" ]; + If you're enabling this module on a running system, + note that a reboot will be required to activate AppArmor in the kernel. - systemd.services.apparmor = let - paths = concatMapStrings (s: " -I ${s}/etc/apparmor.d") - ([ pkgs.apparmor-profiles ] ++ cfg.packages); - in { - after = [ "local-fs.target" ]; - before = [ "sysinit.target" ]; - wantedBy = [ "multi-user.target" ]; - unitConfig = { - DefaultDependencies = "no"; - }; - serviceConfig = { - Type = "oneshot"; - RemainAfterExit = "yes"; - ExecStart = map (p: - ''${pkgs.apparmor-parser}/bin/apparmor_parser -rKv ${paths} "${p}"'' - ) cfg.profiles; - ExecStop = map (p: - ''${pkgs.apparmor-parser}/bin/apparmor_parser -Rv "${p}"'' - ) cfg.profiles; - ExecReload = map (p: - ''${pkgs.apparmor-parser}/bin/apparmor_parser --reload ${paths} "${p}"'' - ) cfg.profiles; - }; - }; - }; + Also, beware that enabling this module will by default + try to kill unconfined but confinable running processes, + in order to obtain a confinement matching what is declared in the NixOS configuration. + This will happen when upgrading to a NixOS revision + introducing an AppArmor profile for the executable of a running process. + This is because enabling an AppArmor profile for an executable + can only confine new or already confined processes of that executable, + but leaves already running processes unconfined. + Set killUnconfinedConfinables + to false if you prefer to leave those processes running''; + policies = lib.mkOption { + description = '' + AppArmor policies. + ''; + type = types.attrsOf (types.submodule ({ name, config, ... }: { + options = { + enable = mkDisableOption "loading of the profile into the kernel"; + enforce = mkDisableOption "enforcing of the policy or only complain in the logs"; + profile = lib.mkOption { + description = "The policy of the profile."; + type = types.lines; + apply = pkgs.writeText name; + }; + }; + })); + default = {}; + }; + includes = lib.mkOption { + type = types.attrsOf types.lines; + default = {}; + description = '' + List of paths to be added to AppArmor's searched paths + when resolving include directives. + ''; + apply = lib.mapAttrs pkgs.writeText; + }; + packages = lib.mkOption { + type = types.listOf types.package; + default = []; + description = "List of packages to be added to AppArmor's include path"; + }; + enableCache = lib.mkEnableOption ''caching of AppArmor policies + in /var/cache/apparmor/. + + Beware that AppArmor policies almost always contain Nix store paths, + and thus produce at each change of these paths + a new cached version accumulating in the cache''; + killUnconfinedConfinables = mkDisableOption ''killing of processes + which have an AppArmor profile enabled + (in policies) + but are not confined (because AppArmor can only confine new processes). + Beware that due to a current limitation of AppArmor, + only profiles with exact paths (and no name) can enable such kills''; + }; + }; + + config = lib.mkIf cfg.enable { + assertions = map (policy: + { assertion = match ".*/.*" policy == null; + message = "`security.apparmor.policies.\"${policy}\"' must not contain a slash."; + # Because, for instance, aa-remove-unknown uses profiles_names_list() in rc.apparmor.functions + # which does not recurse into sub-directories. + } + ) (attrNames cfg.policies); + + environment.systemPackages = [ + pkgs.apparmor-utils + pkgs.apparmor-bin-utils + ]; + environment.etc."apparmor.d".source = pkgs.linkFarm "apparmor.d" ( + # It's important to put only enabledPolicies here and not all cfg.policies + # because aa-remove-unknown reads profiles from all /etc/apparmor.d/* + lib.mapAttrsToList (name: p: {inherit name; path=p.profile;}) enabledPolicies ++ + lib.mapAttrsToList (name: path: {inherit name path;}) cfg.includes + ); + environment.etc."apparmor/parser.conf".text = '' + ${if cfg.enableCache then "write-cache" else "skip-cache"} + cache-loc /var/cache/apparmor + Include /etc/apparmor.d + '' + + lib.concatMapStrings (p: "Include ${p}/etc/apparmor.d\n") cfg.packages; + # For aa-logprof + environment.etc."apparmor/apparmor.conf".text = '' + ''; + # For aa-logprof + environment.etc."apparmor/severity.db".source = pkgs.apparmor-utils + "/etc/apparmor/severity.db"; + environment.etc."apparmor/logprof.conf".source = pkgs.runCommand "logprof.conf" { + header = '' + [settings] + # /etc/apparmor.d/ is read-only on NixOS + profiledir = /var/cache/apparmor/logprof + inactive_profiledir = /etc/apparmor.d/disable + # Use: journalctl -b --since today --grep audit: | aa-logprof + logfiles = /dev/stdin + + parser = ${pkgs.apparmor-parser}/bin/apparmor_parser + ldd = ${pkgs.glibc.bin}/bin/ldd + logger = ${pkgs.utillinux}/bin/logger + + # customize how file ownership permissions are presented + # 0 - off + # 1 - default of what ever mode the log reported + # 2 - force the new permissions to be user + # 3 - force all perms on the rule to be user + default_owner_prompt = 1 + + custom_includes = /etc/apparmor.d ${lib.concatMapStringsSep " " (p: "${p}/etc/apparmor.d") cfg.packages} + + [qualifiers] + ${pkgs.runtimeShell} = icnu + ${pkgs.bashInteractive}/bin/sh = icnu + ${pkgs.bashInteractive}/bin/bash = icnu + ''; + footer = "${pkgs.apparmor-utils}/etc/apparmor/logprof.conf"; + passAsFile = [ "header" ]; + } '' + cp $headerPath $out + sed '1,/\[qualifiers\]/d' $footer >> $out + ''; + + boot.kernelParams = [ "apparmor=1" "security=apparmor" ]; + + systemd.services.apparmor = { + after = [ + "local-fs.target" + "systemd-journald-audit.socket" + ]; + before = [ "sysinit.target" ]; + wantedBy = [ "multi-user.target" ]; + unitConfig = { + Description="Load AppArmor policies"; + DefaultDependencies = "no"; + ConditionSecurity = "apparmor"; + }; + # Reloading instead of restarting enables to load new AppArmor profiles + # without necessarily restarting all services which have Requires=apparmor.service + reloadIfChanged = true; + restartTriggers = [ + etc."apparmor/parser.conf".source + etc."apparmor.d".source + ]; + serviceConfig = let + killUnconfinedConfinables = pkgs.writeShellScript "apparmor-kill" '' + set -eu + ${pkgs.apparmor-bin-utils}/bin/aa-status --json | + ${pkgs.jq}/bin/jq --raw-output '.processes | .[] | .[] | select (.status == "unconfined") | .pid' | + xargs --verbose --no-run-if-empty --delimiter='\n' \ + kill + ''; + commonOpts = p: "--verbose --show-cache ${lib.optionalString (!p.enforce) "--complain "}${p.profile}"; + in { + Type = "oneshot"; + RemainAfterExit = "yes"; + ExecStartPre = "${pkgs.apparmor-utils}/bin/aa-teardown"; + ExecStart = lib.mapAttrsToList (n: p: "${pkgs.apparmor-parser}/bin/apparmor_parser --add ${commonOpts p}") enabledPolicies; + ExecStartPost = lib.optional cfg.killUnconfinedConfinables killUnconfinedConfinables; + ExecReload = + # Add or replace into the kernel profiles in enabledPolicies + # (because AppArmor can do that without stopping the processes already confined). + lib.mapAttrsToList (n: p: "${pkgs.apparmor-parser}/bin/apparmor_parser --replace ${commonOpts p}") enabledPolicies ++ + # Remove from the kernel any profile whose name is not + # one of the names within the content of the profiles in enabledPolicies + # (indirectly read from /etc/apparmor.d/*, without recursing into sub-directory). + # Note that this does not remove profiles dynamically generated by libvirt. + [ "${pkgs.apparmor-utils}/bin/aa-remove-unknown" ] ++ + # Optionaly kill the processes which are unconfined but now have a profile loaded + # (because AppArmor can only start to confine new processes). + lib.optional cfg.killUnconfinedConfinables killUnconfinedConfinables; + ExecStop = "${pkgs.apparmor-utils}/bin/aa-teardown"; + CacheDirectory = [ "apparmor" "apparmor/logprof" ]; + CacheDirectoryMode = "0700"; + }; + }; + }; + + meta.maintainers = with lib.maintainers; [ julm ]; } diff --git a/nixos/modules/security/apparmor/includes.nix b/nixos/modules/security/apparmor/includes.nix new file mode 100644 index 00000000000..498d7e77650 --- /dev/null +++ b/nixos/modules/security/apparmor/includes.nix @@ -0,0 +1,301 @@ +{ config, lib, pkgs, ... }: +let + inherit (builtins) attrNames hasAttr isAttrs; + inherit (lib) getLib; + inherit (config.environment) etc; + etcRule = arg: + let go = {path ? null, mode ? "r", trail ? ""}: + lib.optionalString (hasAttr path etc) + "${mode} ${config.environment.etc.${path}.source}${trail},"; + in if isAttrs arg + then go arg + else go {path=arg;}; +in +{ +# FIXME: most of the etcRule calls below have been +# written systematically by converting from apparmor-profiles's profiles +# without testing nor deep understanding of their uses, +# and thus may need more rules or can have less rules; +# this remains to be determined case by case, +# some may even be completely useless. +config.security.apparmor.includes = { + # This one is included by + # which is usualy included before any profile. + "abstractions/tunables/alias" = '' + alias /bin -> /run/current-system/sw/bin, + alias /lib/modules -> /run/current-system/kernel/lib/modules, + alias /sbin -> /run/current-system/sw/sbin, + alias /usr -> /run/current-system/sw, + ''; + "abstractions/audio" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/audio" + ${etcRule "asound.conf"} + ${etcRule "esound/esd.conf"} + ${etcRule "libao.conf"} + ${etcRule {path="pulse"; trail="/";}} + ${etcRule {path="pulse"; trail="/**";}} + ${etcRule {path="sound"; trail="/";}} + ${etcRule {path="sound"; trail="/**";}} + ${etcRule {path="alsa/conf.d"; trail="/";}} + ${etcRule {path="alsa/conf.d"; trail="/*";}} + ${etcRule "openal/alsoft.conf"} + ${etcRule "wildmidi/wildmidi.conf"} + ''; + "abstractions/authentication" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/authentication" + # Defined in security.pam + include + ${etcRule "nologin"} + ${etcRule "securetty"} + ${etcRule {path="security"; trail="/*";}} + ${etcRule "shadow"} + ${etcRule "gshadow"} + ${etcRule "pwdb.conf"} + ${etcRule "default/passwd"} + ${etcRule "login.defs"} + ''; + "abstractions/base" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/base" + r ${pkgs.stdenv.cc.libc}/share/locale/**, + r ${pkgs.stdenv.cc.libc}/share/locale.alias, + ${lib.optionalString (pkgs.glibcLocales != null) "r ${pkgs.glibcLocales}/lib/locale/locale-archive,"} + ${etcRule "localtime"} + r ${pkgs.tzdata}/share/zoneinfo/**, + r ${pkgs.stdenv.cc.libc}/share/i18n/**, + ''; + "abstractions/bash" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/bash" + # system-wide bash configuration + ${etcRule "profile.dos"} + ${etcRule "profile"} + ${etcRule "profile.d"} + ${etcRule {path="profile.d"; trail="/*";}} + ${etcRule "bashrc"} + ${etcRule "bash.bashrc"} + ${etcRule "bash.bashrc.local"} + ${etcRule "bash_completion"} + ${etcRule "bash_completion.d"} + ${etcRule {path="bash_completion.d"; trail="/*";}} + # bash relies on system-wide readline configuration + ${etcRule "inputrc"} + # bash inspects filesystems at startup + # and /etc/mtab is linked to /proc/mounts + @{PROC}/mounts + + # run out of /etc/bash.bashrc + ${etcRule "DIR_COLORS"} + ''; + "abstractions/cups-client" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/cpus-client" + ${etcRule "cups/cups-client.conf"} + ''; + "abstractions/consoles" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/consoles" + ''; + "abstractions/dbus-session-strict" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/dbus-session-strict" + ${etcRule "machine-id"} + ''; + "abstractions/dconf" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/dconf" + ${etcRule {path="dconf"; trail="/**";}} + ''; + "abstractions/dri-common" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/dri-common" + ${etcRule "drirc"} + ''; + # The config.fonts.fontconfig NixOS module adds many files to /etc/fonts/ + # by symlinking them but without exporting them outside of its NixOS module, + # those are therefore added there to this "abstractions/fonts". + "abstractions/fonts" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/fonts" + ${etcRule {path="fonts"; trail="/**";}} + ''; + "abstractions/gnome" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/gnome" + ${etcRule {path="gnome"; trail="/gtkrc*";}} + ${etcRule {path="gtk"; trail="/*";}} + ${etcRule {path="gtk-2.0"; trail="/*";}} + ${etcRule {path="gtk-3.0"; trail="/*";}} + ${etcRule "orbitrc"} + include + ${etcRule {path="pango"; trail="/*";}} + ${etcRule {path="/etc/gnome-vfs-2.0"; trail="/modules/";}} + ${etcRule {path="/etc/gnome-vfs-2.0"; trail="/modules/*";}} + ${etcRule "papersize"} + ${etcRule {path="cups"; trail="/lpoptions";}} + ${etcRule {path="gnome"; trail="/defaults.list";}} + ${etcRule {path="xdg"; trail="/{,*-}mimeapps.list";}} + ${etcRule "xdg/mimeapps.list"} + ''; + "abstractions/kde" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/kde" + ${etcRule {path="qt3"; trail="/kstylerc";}} + ${etcRule {path="qt3"; trail="/qt_plugins_3.3rc";}} + ${etcRule {path="qt3"; trail="/qtrc";}} + ${etcRule "kderc"} + ${etcRule {path="kde3"; trail="/*";}} + ${etcRule "kde4rc"} + ${etcRule {path="xdg"; trail="/kdeglobals";}} + ${etcRule {path="xdg"; trail="/Trolltech.conf";}} + ''; + "abstractions/kerberosclient" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/kerberosclient" + ${etcRule {path="krb5.keytab"; mode="rk";}} + ${etcRule "krb5.conf"} + ${etcRule "krb5.conf.d"} + ${etcRule {path="krb5.conf.d"; trail="/*";}} + + # config files found via strings on libs + ${etcRule "krb.conf"} + ${etcRule "krb.realms"} + ${etcRule "srvtab"} + ''; + "abstractions/ldapclient" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/ldapclient" + ${etcRule "ldap.conf"} + ${etcRule "ldap.secret"} + ${etcRule {path="openldap"; trail="/*";}} + ${etcRule {path="openldap"; trail="/cacerts/*";}} + ${etcRule {path="sasl2"; trail="/*";}} + ''; + "abstractions/likewise" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/likewise" + ''; + "abstractions/mdns" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/mdns" + ${etcRule "nss_mdns.conf"} + ''; + "abstractions/nameservice" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/nameservice" + + # Many programs wish to perform nameservice-like operations, such as + # looking up users by name or id, groups by name or id, hosts by name + # or IP, etc. These operations may be performed through files, dns, + # NIS, NIS+, LDAP, hesiod, wins, etc. Allow them all here. + ${etcRule "group"} + ${etcRule "host.conf"} + ${etcRule "hosts"} + ${etcRule "nsswitch.conf"} + ${etcRule "gai.conf"} + ${etcRule "passwd"} + ${etcRule "protocols"} + + # libtirpc (used for NIS/YP login) needs this + ${etcRule "netconfig"} + + ${etcRule "resolv.conf"} + + ${etcRule {path="samba"; trail="/lmhosts";}} + ${etcRule "services"} + + ${etcRule "default/nss"} + + # libnl-3-200 via libnss-gw-name + ${etcRule {path="libnl"; trail="/classid";}} + ${etcRule {path="libnl-3"; trail="/classid";}} + + mr ${getLib pkgs.nss}/lib/libnss_*.so*, + mr ${getLib pkgs.nss}/lib64/libnss_*.so*, + ''; + "abstractions/nis" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/nis" + ''; + "abstractions/nvidia" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/nvidia" + ${etcRule "vdpau_wrapper.cfg"} + ''; + "abstractions/opencl-common" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/opencl-common" + ${etcRule {path="OpenCL"; trail="/**";}} + ''; + "abstractions/opencl-mesa" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/opencl-mesa" + ${etcRule "default/drirc"} + ''; + "abstractions/openssl" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/openssl" + ${etcRule {path="ssl"; trail="/openssl.cnf";}} + ''; + "abstractions/p11-kit" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/p11-kit" + ${etcRule {path="pkcs11"; trail="/";}} + ${etcRule {path="pkcs11"; trail="/pkcs11.conf";}} + ${etcRule {path="pkcs11"; trail="/modules/";}} + ${etcRule {path="pkcs11"; trail="/modules/*";}} + ''; + "abstractions/perl" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/perl" + ${etcRule {path="perl"; trail="/**";}} + ''; + "abstractions/php" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/php" + ${etcRule {path="php"; trail="/**/";}} + ${etcRule {path="php5"; trail="/**/";}} + ${etcRule {path="php7"; trail="/**/";}} + ${etcRule {path="php"; trail="/**.ini";}} + ${etcRule {path="php5"; trail="/**.ini";}} + ${etcRule {path="php7"; trail="/**.ini";}} + ''; + "abstractions/postfix-common" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/postfix-common" + ${etcRule "mailname"} + ${etcRule {path="postfix"; trail="/*.cf";}} + ${etcRule "postfix/main.cf"} + ${etcRule "postfix/master.cf"} + ''; + "abstractions/python" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/python" + ''; + "abstractions/qt5" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/qt5" + ${etcRule {path="xdg"; trail="/QtProject/qtlogging.ini";}} + ${etcRule {path="xdg/QtProject"; trail="/qtlogging.ini";}} + ${etcRule "xdg/QtProject/qtlogging.ini"} + ''; + "abstractions/samba" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/samba" + ${etcRule {path="samba"; trail="/*";}} + ''; + "abstractions/ssl_certs" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/ssl_certs" + ${etcRule "ssl/certs/ca-certificates.crt"} + ${etcRule "ssl/certs/ca-bundle.crt"} + ${etcRule "pki/tls/certs/ca-bundle.crt"} + + ${etcRule {path="ssl/trust"; trail="/";}} + ${etcRule {path="ssl/trust"; trail="/*";}} + ${etcRule {path="ssl/trust/anchors"; trail="/";}} + ${etcRule {path="ssl/trust/anchors"; trail="/**";}} + ${etcRule {path="pki/trust"; trail="/";}} + ${etcRule {path="pki/trust"; trail="/*";}} + ${etcRule {path="pki/trust/anchors"; trail="/";}} + ${etcRule {path="pki/trust/anchors"; trail="/**";}} + + # security.acme NixOS module + r /var/lib/acme/*/cert.pem, + r /var/lib/acme/*/chain.pem, + r /var/lib/acme/*/fullchain.pem, + ''; + "abstractions/ssl_keys" = '' + # security.acme NixOS module + r /var/lib/acme/*/full.pem, + r /var/lib/acme/*/key.pem, + ''; + "abstractions/vulkan" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/vulkan" + ${etcRule {path="vulkan/icd.d"; trail="/";}} + ${etcRule {path="vulkan/icd.d"; trail="/*.json";}} + ''; + "abstractions/winbind" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/winbind" + ${etcRule {path="samba"; trail="/smb.conf";}} + ${etcRule {path="samba"; trail="/dhcp.conf";}} + ''; + "abstractions/X" = '' + include "${pkgs.apparmor-profiles}/etc/apparmor.d/abstractions/X" + ${etcRule {path="X11/cursors"; trail="/";}} + ${etcRule {path="X11/cursors"; trail="/**";}} + ''; +}; +} diff --git a/nixos/modules/security/apparmor/profiles.nix b/nixos/modules/security/apparmor/profiles.nix new file mode 100644 index 00000000000..8eb630b5a48 --- /dev/null +++ b/nixos/modules/security/apparmor/profiles.nix @@ -0,0 +1,11 @@ +{ config, lib, pkgs, ... }: +let apparmor = config.security.apparmor; in +{ +config.security.apparmor.packages = [ pkgs.apparmor-profiles ]; +config.security.apparmor.policies."bin.ping".profile = lib.mkIf apparmor.policies."bin.ping".enable '' + include "${pkgs.iputils.apparmor}/bin.ping" + include "${pkgs.inetutils.apparmor}/bin.ping" + # Note that including those two profiles in the same profile + # would not work if the second one were to re-include . +''; +} diff --git a/nixos/modules/security/pam.nix b/nixos/modules/security/pam.nix index 103cf205012..8216c03795a 100644 --- a/nixos/modules/security/pam.nix +++ b/nixos/modules/security/pam.nix @@ -895,6 +895,61 @@ in runuser-l = { rootOK = true; unixAuth = false; }; }; + security.apparmor.includes."abstractions/pam" = let + isEnabled = test: fold or false (map test (attrValues config.security.pam.services)); + in '' + ${lib.concatMapStringsSep "\n" + (name: "r ${config.environment.etc."pam.d/${name}".source},") + (attrNames config.security.pam.services)} + mr ${getLib pkgs.pam}/lib/security/pam_filter/*, + mr ${getLib pkgs.pam}/lib/security/pam_*.so, + r ${getLib pkgs.pam}/lib/security/, + ${optionalString use_ldap + "mr ${pam_ldap}/lib/security/pam_ldap.so,"} + ${optionalString config.services.sssd.enable + "mr ${pkgs.sssd}/lib/security/pam_sss.so,"} + ${optionalString config.krb5.enable '' + mr ${pam_krb5}/lib/security/pam_krb5.so, + mr ${pam_ccreds}/lib/security/pam_ccreds.so, + ''} + ${optionalString (isEnabled (cfg: cfg.googleOsLoginAccountVerification)) '' + mr ${pkgs.google-compute-engine-oslogin}/lib/pam_oslogin_login.so, + mr ${pkgs.google-compute-engine-oslogin}/lib/pam_oslogin_admin.so, + ''} + ${optionalString (isEnabled (cfg: cfg.googleOsLoginAuthentication)) + "mr ${pkgs.google-compute-engine-oslogin}/lib/pam_oslogin_login.so,"} + ${optionalString (config.security.pam.enableSSHAgentAuth && isEnabled (cfg: cfg.sshAgentAuth)) + "mr ${pkgs.pam_ssh_agent_auth}/libexec/pam_ssh_agent_auth.so,"} + ${optionalString (isEnabled (cfg: cfg.fprintAuth)) + "mr ${pkgs.fprintd}/lib/security/pam_fprintd.so,"} + ${optionalString (isEnabled (cfg: cfg.u2fAuth)) + "mr ${pkgs.pam_u2f}/lib/security/pam_u2f.so,"} + ${optionalString (isEnabled (cfg: cfg.usbAuth)) + "mr ${pkgs.pam_usb}/lib/security/pam_usb.so,"} + ${optionalString (isEnabled (cfg: cfg.oathAuth)) + "mr ${pkgs.oathToolkit}/lib/security/pam_oath.so,"} + ${optionalString (isEnabled (cfg: cfg.yubicoAuth)) + "mr ${pkgs.yubico-pam}/lib/security/pam_yubico.so,"} + ${optionalString (isEnabled (cfg: cfg.duoSecurity.enable)) + "mr ${pkgs.duo-unix}/lib/security/pam_duo.so,"} + ${optionalString (isEnabled (cfg: cfg.otpwAuth)) + "mr ${pkgs.otpw}/lib/security/pam_otpw.so,"} + ${optionalString config.security.pam.enableEcryptfs + "mr ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so,"} + ${optionalString (isEnabled (cfg: cfg.pamMount)) + "mr ${pkgs.pam_mount}/lib/security/pam_mount.so,"} + ${optionalString (isEnabled (cfg: cfg.enableGnomeKeyring)) + "mr ${pkgs.gnome3.gnome-keyring}/lib/security/pam_gnome_keyring.so,"} + ${optionalString (isEnabled (cfg: cfg.startSession)) + "mr ${pkgs.systemd}/lib/security/pam_systemd.so,"} + ${optionalString (isEnabled (cfg: cfg.enableAppArmor) && config.security.apparmor.enable) + "mr ${pkgs.apparmor-pam}/lib/security/pam_apparmor.so,"} + ${optionalString (isEnabled (cfg: cfg.enableKwallet)) + "mr ${pkgs.plasma5.kwallet-pam}/lib/security/pam_kwallet5.so,"} + ${optionalString config.virtualisation.lxc.lxcfs.enable + "mr ${pkgs.lxc}/lib/security/pam_cgfs.so"} + ''; + }; } diff --git a/nixos/modules/security/wrappers/default.nix b/nixos/modules/security/wrappers/default.nix index 3cbf22fea7a..1e65f451515 100644 --- a/nixos/modules/security/wrappers/default.nix +++ b/nixos/modules/security/wrappers/default.nix @@ -171,6 +171,14 @@ in export PATH="${wrapperDir}:$PATH" ''; + security.apparmor.includes."nixos/security.wrappers" = '' + include "${pkgs.apparmorRulesFromClosure { name="security.wrappers"; } [ + securityWrapper + pkgs.stdenv.cc.cc + pkgs.stdenv.cc.libc + ]}" + ''; + ###### setcap activation script system.activationScripts.wrappers = lib.stringAfter [ "specialfs" "users" ] diff --git a/nixos/modules/services/torrent/transmission.nix b/nixos/modules/services/torrent/transmission.nix index 7bec073e26f..779924a65a8 100644 --- a/nixos/modules/services/torrent/transmission.nix +++ b/nixos/modules/services/torrent/transmission.nix @@ -5,17 +5,22 @@ with lib; let cfg = config.services.transmission; inherit (config.environment) etc; - apparmor = config.security.apparmor.enable; + apparmor = config.security.apparmor; rootDir = "/run/transmission"; - homeDir = "/var/lib/transmission"; settingsDir = ".config/transmission-daemon"; downloadsDir = "Downloads"; incompleteDir = ".incomplete"; watchDir = "watchdir"; - # TODO: switch to configGen.json once RFC0042 is implemented - settingsFile = pkgs.writeText "settings.json" (builtins.toJSON cfg.settings); + settingsFormat = pkgs.formats.json {}; + settingsFile = settingsFormat.generate "settings.json" cfg.settings; in { + imports = [ + (mkRenamedOptionModule ["services" "transmission" "port"] + ["services" "transmission" "settings" "rpc-port"]) + (mkAliasOptionModule ["services" "transmission" "openFirewall"] + ["services" "transmission" "openPeerPorts"]) + ]; options = { services.transmission = { enable = mkEnableOption ''the headless Transmission BitTorrent daemon. @@ -24,48 +29,141 @@ in transmission-remote, the WebUI (http://127.0.0.1:9091/ by default), or other clients like stig or tremc. - Torrents are downloaded to ${homeDir}/${downloadsDir} by default and are + Torrents are downloaded to /${downloadsDir} by default and are accessible to users in the "transmission" group''; - settings = mkOption rec { - # TODO: switch to types.config.json as prescribed by RFC0042 once it's implemented - type = types.attrs; - apply = recursiveUpdate default; - default = - { - download-dir = "${cfg.home}/${downloadsDir}"; - incomplete-dir = "${cfg.home}/${incompleteDir}"; - incomplete-dir-enabled = true; - watch-dir = "${cfg.home}/${watchDir}"; - watch-dir-enabled = false; - message-level = 1; - peer-port = 51413; - peer-port-random-high = 65535; - peer-port-random-low = 49152; - peer-port-random-on-start = false; - rpc-bind-address = "127.0.0.1"; - rpc-port = 9091; - script-torrent-done-enabled = false; - script-torrent-done-filename = ""; - umask = 2; # 0o002 in decimal as expected by Transmission - utp-enabled = true; - }; - example = - { - download-dir = "/srv/torrents/"; - incomplete-dir = "/srv/torrents/.incomplete/"; - incomplete-dir-enabled = true; - rpc-whitelist = "127.0.0.1,192.168.*.*"; - }; + settings = mkOption { description = '' - Attribute set whose fields overwrites fields in + Settings whose options overwrite fields in .config/transmission-daemon/settings.json - (each time the service starts). String values must be quoted, integer and - boolean values must not. + (each time the service starts). See Transmission's Wiki - for documentation. + for documentation of settings not explicitely covered by this module. ''; + default = {}; + type = types.submodule { + freeformType = settingsFormat.type; + options.download-dir = mkOption { + type = types.path; + default = "${cfg.home}/${downloadsDir}"; + description = "Directory where to download torrents."; + }; + options.incomplete-dir = mkOption { + type = types.path; + default = "${cfg.home}/${incompleteDir}"; + description = '' + When enabled with + services.transmission.home + , + new torrents will download the files to this directory. + When complete, the files will be moved to download-dir + . + ''; + }; + options.incomplete-dir-enabled = mkOption { + type = types.bool; + default = true; + description = ""; + }; + options.message-level = mkOption { + type = types.ints.between 0 2; + default = 2; + description = "Set verbosity of transmission messages."; + }; + options.peer-port = mkOption { + type = types.port; + default = 51413; + description = "The peer port to listen for incoming connections."; + }; + options.peer-port-random-high = mkOption { + type = types.port; + default = 65535; + description = '' + The maximum peer port to listen to for incoming connections + when is enabled. + ''; + }; + options.peer-port-random-low = mkOption { + type = types.port; + default = 65535; + description = '' + The minimal peer port to listen to for incoming connections + when is enabled. + ''; + }; + options.peer-port-random-on-start = mkOption { + type = types.bool; + default = false; + description = "Randomize the peer port."; + }; + options.rpc-bind-address = mkOption { + type = types.str; + default = "127.0.0.1"; + example = "0.0.0.0"; + description = '' + Where to listen for RPC connections. + Use \"0.0.0.0\" to listen on all interfaces. + ''; + }; + options.rpc-port = mkOption { + type = types.port; + default = 9091; + description = "The RPC port to listen to."; + }; + options.script-torrent-done-enabled = mkOption { + type = types.bool; + default = false; + description = '' + Whether to run + + at torrent completion. + ''; + }; + options.script-torrent-done-filename = mkOption { + type = types.nullOr types.path; + default = null; + description = "Executable to be run at torrent completion."; + }; + options.umask = mkOption { + type = types.int; + default = 2; + description = '' + Sets transmission's file mode creation mask. + See the umask(2) manpage for more information. + Users who want their saved torrents to be world-writable + may want to set this value to 0. + Bear in mind that the json markup language only accepts numbers in base 10, + so the standard umask(2) octal notation "022" is written in settings.json as 18. + ''; + }; + options.utp-enabled = mkOption { + type = types.bool; + default = true; + description = '' + Whether to enable Micro Transport Protocol (µTP). + ''; + }; + options.watch-dir = mkOption { + type = types.path; + default = "${cfg.home}/${watchDir}"; + description = "Watch a directory for torrent files and add them to transmission."; + }; + options.watch-dir-enabled = mkOption { + type = types.bool; + default = false; + description = ''Whether to enable the + . + ''; + }; + options.trash-original-torrent-files = mkOption { + type = types.bool; + default = false; + description = ''Whether to delete torrents added from the + . + ''; + }; + }; }; downloadDirPermissions = mkOption { @@ -74,31 +172,22 @@ in example = "775"; description = '' The permissions set by systemd.activationScripts.transmission-daemon - on the directories settings.download-dir - and settings.incomplete-dir. + on the directories + and . Note that you may also want to change - settings.umask. - ''; - }; - - port = mkOption { - type = types.port; - description = '' - TCP port number to run the RPC/web interface. - - If instead you want to change the peer port, - use settings.peer-port - or settings.peer-port-random-on-start. + . ''; }; home = mkOption { type = types.path; - default = homeDir; + default = "/var/lib/transmission"; description = '' The directory where Transmission will create ${settingsDir}. - as well as ${downloadsDir}/ unless settings.download-dir is changed, - and ${incompleteDir}/ unless settings.incomplete-dir is changed. + as well as ${downloadsDir}/ unless + is changed, + and ${incompleteDir}/ unless + is changed. ''; }; @@ -119,19 +208,22 @@ in description = '' Path to a JSON file to be merged with the settings. Useful to merge a file which is better kept out of the Nix store - because it contains sensible data like settings.rpc-password. + because it contains sensible data like + . ''; default = "/dev/null"; example = "/var/lib/secrets/transmission/settings.json"; }; - openFirewall = mkEnableOption "opening of the peer port(s) in the firewall"; + openPeerPorts = mkEnableOption "opening of the peer port(s) in the firewall"; + + openRPCPort = mkEnableOption "opening of the RPC port in the firewall"; performanceNetParameters = mkEnableOption ''tweaking of kernel parameters to open many more connections at the same time. Note that you may also want to increase - settings.peer-limit-global. + . And be aware that these settings are quite aggressive and might not suite your regular desktop use. For instance, SSH sessions may time out more easily''; @@ -152,40 +244,14 @@ in install -d -m '${cfg.downloadDirPermissions}' -o '${cfg.user}' -g '${cfg.group}' '${cfg.settings.download-dir}' '' + optionalString cfg.settings.incomplete-dir-enabled '' install -d -m '${cfg.downloadDirPermissions}' -o '${cfg.user}' -g '${cfg.group}' '${cfg.settings.incomplete-dir}' + '' + optionalString cfg.settings.watch-dir-enabled '' + install -d -m '${cfg.downloadDirPermissions}' -o '${cfg.user}' -g '${cfg.group}' '${cfg.settings.watch-dir}' ''; - assertions = [ - { assertion = builtins.match "^/.*" cfg.home != null; - message = "`services.transmission.home' must be an absolute path."; - } - { assertion = types.path.check cfg.settings.download-dir; - message = "`services.transmission.settings.download-dir' must be an absolute path."; - } - { assertion = types.path.check cfg.settings.incomplete-dir; - message = "`services.transmission.settings.incomplete-dir' must be an absolute path."; - } - { assertion = types.path.check cfg.settings.watch-dir; - message = "`services.transmission.settings.watch-dir' must be an absolute path."; - } - { assertion = cfg.settings.script-torrent-done-filename == "" || types.path.check cfg.settings.script-torrent-done-filename; - message = "`services.transmission.settings.script-torrent-done-filename' must be an absolute path."; - } - { assertion = types.port.check cfg.settings.rpc-port; - message = "${toString cfg.settings.rpc-port} is not a valid port number for `services.transmission.settings.rpc-port`."; - } - # In case both port and settings.rpc-port are explicitely defined: they must be the same. - { assertion = !options.services.transmission.port.isDefined || cfg.port == cfg.settings.rpc-port; - message = "`services.transmission.port' is not equal to `services.transmission.settings.rpc-port'"; - } - ]; - - services.transmission.settings = - optionalAttrs options.services.transmission.port.isDefined { rpc-port = cfg.port; }; - systemd.services.transmission = { description = "Transmission BitTorrent Service"; - after = [ "network.target" ] ++ optional apparmor "apparmor.service"; - requires = optional apparmor "apparmor.service"; + after = [ "network.target" ] ++ optional apparmor.enable "apparmor.service"; + requires = optional apparmor.enable "apparmor.service"; wantedBy = [ "multi-user.target" ]; environment.CURL_CA_BUNDLE = etc."ssl/certs/ca-certificates.crt".source; @@ -226,11 +292,9 @@ in cfg.settings.download-dir ] ++ optional cfg.settings.incomplete-dir-enabled - cfg.settings.incomplete-dir - ++ - optional cfg.settings.watch-dir-enabled - cfg.settings.watch-dir - ; + cfg.settings.incomplete-dir ++ + optional (cfg.settings.watch-dir-enabled && cfg.settings.trash-original-torrent-files) + cfg.settings.watch-dir; BindReadOnlyPaths = [ # No confinement done of /nix/store here like in systemd-confinement.nix, # an AppArmor profile is provided to get a confinement based upon paths and rights. @@ -239,8 +303,10 @@ in "/run" ] ++ optional (cfg.settings.script-torrent-done-enabled && - cfg.settings.script-torrent-done-filename != "") - cfg.settings.script-torrent-done-filename; + cfg.settings.script-torrent-done-filename != null) + cfg.settings.script-torrent-done-filename ++ + optional (cfg.settings.watch-dir-enabled && !cfg.settings.trash-original-torrent-files) + cfg.settings.watch-dir; # The following options are only for optimizing: # systemd-analyze security transmission AmbientCapabilities = ""; @@ -307,25 +373,28 @@ in }; }); - networking.firewall = mkIf cfg.openFirewall ( - if cfg.settings.peer-port-random-on-start - then - { allowedTCPPortRanges = - [ { from = cfg.settings.peer-port-random-low; - to = cfg.settings.peer-port-random-high; - } - ]; - allowedUDPPortRanges = - [ { from = cfg.settings.peer-port-random-low; - to = cfg.settings.peer-port-random-high; - } - ]; - } - else - { allowedTCPPorts = [ cfg.settings.peer-port ]; - allowedUDPPorts = [ cfg.settings.peer-port ]; - } - ); + networking.firewall = mkMerge [ + (mkIf cfg.openPeerPorts ( + if cfg.settings.peer-port-random-on-start + then + { allowedTCPPortRanges = + [ { from = cfg.settings.peer-port-random-low; + to = cfg.settings.peer-port-random-high; + } + ]; + allowedUDPPortRanges = + [ { from = cfg.settings.peer-port-random-low; + to = cfg.settings.peer-port-random-high; + } + ]; + } + else + { allowedTCPPorts = [ cfg.settings.peer-port ]; + allowedUDPPorts = [ cfg.settings.peer-port ]; + } + )) + (mkIf cfg.openRPCPort { allowedTCPPorts = [ cfg.settings.rpc-port ]; }) + ]; boot.kernel.sysctl = mkMerge [ # Transmission uses a single UDP socket in order to implement multiple uTP sockets, @@ -340,113 +409,57 @@ in # Increase the number of available source (local) TCP and UDP ports to 49151. # Usual default is 32768 60999, ie. 28231 ports. # Find out your current usage with: ss -s - "net.ipv4.ip_local_port_range" = "16384 65535"; + "net.ipv4.ip_local_port_range" = mkDefault "16384 65535"; # Timeout faster generic TCP states. # Usual default is 600. # Find out your current usage with: watch -n 1 netstat -nptuo - "net.netfilter.nf_conntrack_generic_timeout" = 60; + "net.netfilter.nf_conntrack_generic_timeout" = mkDefault 60; # Timeout faster established but inactive connections. # Usual default is 432000. - "net.netfilter.nf_conntrack_tcp_timeout_established" = 600; + "net.netfilter.nf_conntrack_tcp_timeout_established" = mkDefault 600; # Clear immediately TCP states after timeout. # Usual default is 120. - "net.netfilter.nf_conntrack_tcp_timeout_time_wait" = 1; + "net.netfilter.nf_conntrack_tcp_timeout_time_wait" = mkDefault 1; # Increase the number of trackable connections. # Usual default is 262144. # Find out your current usage with: conntrack -C - "net.netfilter.nf_conntrack_max" = 1048576; + "net.netfilter.nf_conntrack_max" = mkDefault 1048576; }) ]; - security.apparmor.profiles = mkIf apparmor [ - (pkgs.writeText "apparmor-transmission-daemon" '' - include + security.apparmor.policies."bin.transmission-daemon".profile = '' + include "${pkgs.transmission.apparmor}/bin.transmission-daemon" + ''; + security.apparmor.includes."local/bin.transmission-daemon" = '' + r ${config.systemd.services.transmission.environment.CURL_CA_BUNDLE}, - ${pkgs.transmission}/bin/transmission-daemon { - include - include + owner rw ${cfg.home}/${settingsDir}/**, + rw ${cfg.settings.download-dir}/**, + ${optionalString cfg.settings.incomplete-dir-enabled '' + rw ${cfg.settings.incomplete-dir}/**, + ''} + ${optionalString cfg.settings.watch-dir-enabled '' + r${optionalString cfg.settings.trash-original-torrent-files "w"} ${cfg.settings.watch-dir}/**, + ''} + profile dirs { + rw ${cfg.settings.download-dir}/**, + ${optionalString cfg.settings.incomplete-dir-enabled '' + rw ${cfg.settings.incomplete-dir}/**, + ''} + ${optionalString cfg.settings.watch-dir-enabled '' + r${optionalString cfg.settings.trash-original-torrent-files "w"} ${cfg.settings.watch-dir}/**, + ''} + } - # NOTE: https://github.com/NixOS/nixpkgs/pull/93457 - # will remove the need for these by fixing - r ${etc."hosts".source}, - r /etc/ld-nix.so.preload, - ${lib.optionalString (builtins.hasAttr "ld-nix.so.preload" etc) '' - r ${etc."ld-nix.so.preload".source}, - ${concatMapStrings (p: optionalString (p != "") ("mr ${p},\n")) - (splitString "\n" config.environment.etc."ld-nix.so.preload".text)} - ''} - r ${etc."ssl/certs/ca-certificates.crt".source}, - r ${pkgs.tzdata}/share/zoneinfo/**, - r ${pkgs.stdenv.cc.libc}/share/i18n/**, - r ${pkgs.stdenv.cc.libc}/share/locale/**, - - mr ${getLib pkgs.stdenv.cc.cc}/lib/*.so*, - mr ${getLib pkgs.stdenv.cc.libc}/lib/*.so*, - mr ${getLib pkgs.attr}/lib/libattr*.so*, - mr ${getLib pkgs.c-ares}/lib/libcares*.so*, - mr ${getLib pkgs.curl}/lib/libcurl*.so*, - mr ${getLib pkgs.keyutils}/lib/libkeyutils*.so*, - mr ${getLib pkgs.libcap}/lib/libcap*.so*, - mr ${getLib pkgs.libevent}/lib/libevent*.so*, - mr ${getLib pkgs.libgcrypt}/lib/libgcrypt*.so*, - mr ${getLib pkgs.libgpgerror}/lib/libgpg-error*.so*, - mr ${getLib pkgs.libkrb5}/lib/lib*.so*, - mr ${getLib pkgs.libssh2}/lib/libssh2*.so*, - mr ${getLib pkgs.lz4}/lib/liblz4*.so*, - mr ${getLib pkgs.nghttp2}/lib/libnghttp2*.so*, - mr ${getLib pkgs.openssl}/lib/libcrypto*.so*, - mr ${getLib pkgs.openssl}/lib/libssl*.so*, - mr ${getLib pkgs.systemd}/lib/libsystemd*.so*, - mr ${getLib pkgs.util-linuxMinimal.out}/lib/libblkid.so*, - mr ${getLib pkgs.util-linuxMinimal.out}/lib/libmount.so*, - mr ${getLib pkgs.util-linuxMinimal.out}/lib/libuuid.so*, - mr ${getLib pkgs.xz}/lib/liblzma*.so*, - mr ${getLib pkgs.zlib}/lib/libz*.so*, - - r @{PROC}/sys/kernel/random/uuid, - r @{PROC}/sys/vm/overcommit_memory, - # @{pid} is not a kernel variable yet but a regexp - #r @{PROC}/@{pid}/environ, - r @{PROC}/@{pid}/mounts, - rwk /tmp/tr_session_id_*, - r /run/systemd/resolve/stub-resolv.conf, - - r ${pkgs.openssl.out}/etc/**, - r ${config.systemd.services.transmission.environment.CURL_CA_BUNDLE}, - r ${pkgs.transmission}/share/transmission/**, - - owner rw ${cfg.home}/${settingsDir}/**, - rw ${cfg.settings.download-dir}/**, - ${optionalString cfg.settings.incomplete-dir-enabled '' - rw ${cfg.settings.incomplete-dir}/**, - ''} - ${optionalString cfg.settings.watch-dir-enabled '' - rw ${cfg.settings.watch-dir}/**, - ''} - profile dirs { - rw ${cfg.settings.download-dir}/**, - ${optionalString cfg.settings.incomplete-dir-enabled '' - rw ${cfg.settings.incomplete-dir}/**, - ''} - ${optionalString cfg.settings.watch-dir-enabled '' - rw ${cfg.settings.watch-dir}/**, - ''} - } - - ${optionalString (cfg.settings.script-torrent-done-enabled && - cfg.settings.script-torrent-done-filename != "") '' - # Stack transmission_directories profile on top of - # any existing profile for script-torrent-done-filename - # FIXME: to be tested as I'm not sure it works well with NoNewPrivileges= - # https://gitlab.com/apparmor/apparmor/-/wikis/AppArmorStacking#seccomp-and-no_new_privs - px ${cfg.settings.script-torrent-done-filename} -> &@{dirs}, - ''} - - # FIXME: enable customizing using https://github.com/NixOS/nixpkgs/pull/93457 - # include - } - '') - ]; + ${optionalString (cfg.settings.script-torrent-done-enabled && + cfg.settings.script-torrent-done-filename != null) '' + # Stack transmission_directories profile on top of + # any existing profile for script-torrent-done-filename + # FIXME: to be tested as I'm not sure it works well with NoNewPrivileges= + # https://gitlab.com/apparmor/apparmor/-/wikis/AppArmorStacking#seccomp-and-no_new_privs + px ${cfg.settings.script-torrent-done-filename} -> &@{dirs}, + ''} + ''; }; meta.maintainers = with lib.maintainers; [ julm ]; diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix index f730ec82bdf..3bfb59a8848 100644 --- a/nixos/modules/tasks/network-interfaces.nix +++ b/nixos/modules/tasks/network-interfaces.nix @@ -1111,6 +1111,21 @@ in } else { ping.source = "${pkgs.iputils.out}/bin/ping"; }; + security.apparmor.policies."bin.ping".profile = lib.mkIf config.security.apparmor.policies."bin.ping".enable (lib.mkAfter '' + /run/wrappers/bin/ping { + include + include + rpx /run/wrappers/wrappers.*/ping, + } + /run/wrappers/wrappers.*/ping { + include + include + r /run/wrappers/wrappers.*/ping.real, + mrpx ${config.security.wrappers.ping.source}, + capability net_raw, + capability setpcap, + } + ''); # Set the host and domain names in the activation script. Don't # clear it if it's not configured in the NixOS configuration, diff --git a/nixos/modules/virtualisation/lxc.nix b/nixos/modules/virtualisation/lxc.nix index f484d5ee59a..0f8b22a45df 100644 --- a/nixos/modules/virtualisation/lxc.nix +++ b/nixos/modules/virtualisation/lxc.nix @@ -74,9 +74,13 @@ in systemd.tmpfiles.rules = [ "d /var/lib/lxc/rootfs 0755 root root -" ]; security.apparmor.packages = [ pkgs.lxc ]; - security.apparmor.profiles = [ - "${pkgs.lxc}/etc/apparmor.d/lxc-containers" - "${pkgs.lxc}/etc/apparmor.d/usr.bin.lxc-start" - ]; + security.apparmor.policies = { + "bin.lxc-start".profile = '' + include ${pkgs.lxc}/etc/apparmor.d/usr.bin.lxc-start + ''; + "lxc-containers".profile = '' + include ${pkgs.lxc}/etc/apparmor.d/lxc-containers + ''; + }; }; } diff --git a/nixos/modules/virtualisation/lxd.nix b/nixos/modules/virtualisation/lxd.nix index 4b2adf4cc69..335dc67673f 100644 --- a/nixos/modules/virtualisation/lxd.nix +++ b/nixos/modules/virtualisation/lxd.nix @@ -83,11 +83,15 @@ in { security.apparmor = { enable = true; - profiles = [ - "${cfg.lxcPackage}/etc/apparmor.d/usr.bin.lxc-start" - "${cfg.lxcPackage}/etc/apparmor.d/lxc-containers" - ]; packages = [ cfg.lxcPackage ]; + policies = { + "bin.lxc-start".profile = '' + include ${cfg.lxcPackage}/etc/apparmor.d/usr.bin.lxc-start + ''; + "lxc-containers".profile = '' + include ${cfg.lxcPackage}/etc/apparmor.d/lxc-containers + ''; + }; }; # TODO: remove once LXD gets proper support for cgroupsv2 diff --git a/pkgs/applications/networking/p2p/transmission/default.nix b/pkgs/applications/networking/p2p/transmission/default.nix index 8cc674b1ea7..bf09c4be1db 100644 --- a/pkgs/applications/networking/p2p/transmission/default.nix +++ b/pkgs/applications/networking/p2p/transmission/default.nix @@ -20,6 +20,7 @@ , enableSystemd ? stdenv.isLinux , enableDaemon ? true , enableCli ? true +, apparmorRulesFromClosure }: let @@ -37,6 +38,8 @@ in stdenv.mkDerivation { fetchSubmodules = true; }; + outputs = [ "out" "apparmor" ]; + cmakeFlags = let mkFlag = opt: if opt then "ON" else "OFF"; @@ -72,6 +75,30 @@ in stdenv.mkDerivation { NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-framework CoreFoundation"; + postInstall = '' + install -D -m 644 /dev/stdin $apparmor/bin.transmission-daemon < + $out/bin/transmission-daemon { + include + include + include + include "${apparmorRulesFromClosure { name = "transmission-daemon"; } ([ + curl libevent openssl pcre zlib + ] ++ lib.optionals enableSystemd [ systemd ] + ++ lib.optionals stdenv.isLinux [ inotify-tools ] + )}" + r @{PROC}/sys/kernel/random/uuid, + r @{PROC}/sys/vm/overcommit_memory, + r @{PROC}/@{pid}/environ, + r @{PROC}/@{pid}/mounts, + rwk /tmp/tr_session_id_*, + r /run/systemd/resolve/stub-resolv.conf, + + include + } + EOF + ''; + meta = { description = "A fast, easy and free BitTorrent client"; longDescription = '' diff --git a/pkgs/os-specific/linux/apparmor/default.nix b/pkgs/os-specific/linux/apparmor/default.nix index 935b5e65b1f..5ec86c49660 100644 --- a/pkgs/os-specific/linux/apparmor/default.nix +++ b/pkgs/os-specific/linux/apparmor/default.nix @@ -10,26 +10,37 @@ , pam , libnotify , buildPackages +, coreutils +, gnugrep +, gnused +, kmod +, writeShellScript +, closureInfo +, runCommand }: let - apparmor-series = "2.13"; - apparmor-patchver = "6"; - apparmor-version = apparmor-series + "." + apparmor-patchver; + apparmor-version = "3.0.1"; apparmor-meta = component: with lib; { homepage = "https://apparmor.net/"; description = "A mandatory access control system - ${component}"; license = licenses.gpl2; - maintainers = with maintainers; [ phreedom thoughtpolice joachifm ]; + maintainers = with maintainers; [ joachifm julm phreedom thoughtpolice ]; platforms = platforms.linux; }; apparmor-sources = fetchurl { - url = "https://launchpad.net/apparmor/${apparmor-series}/${apparmor-version}/+download/apparmor-${apparmor-version}.tar.gz"; - sha256 = "13xshy7905d9q9n8d8i0jmdi9m36wr525g4wlsp8k21n7yvvh9j4"; + url = "https://launchpad.net/apparmor/${lib.versions.majorMinor apparmor-version}/${apparmor-version}/+download/apparmor-${apparmor-version}.tar.gz"; + sha256 = "096zbg3v7b51x7f1ly61mzd3iy9alad6sd4lam98j2d6v5ragbcg"; }; + aa-teardown = writeShellScript "aa-teardown" '' + PATH="${lib.makeBinPath [coreutils gnused gnugrep]}:$PATH" + . ${apparmor-parser}/lib/apparmor/rc.apparmor.functions + remove_profiles + ''; + prePatchCommon = '' chmod a+x ./common/list_capabilities.sh ./common/list_af_names.sh patchShebangs ./common/list_capabilities.sh ./common/list_af_names.sh @@ -45,12 +56,6 @@ let name = "0003-Added-missing-typedef-definitions-on-parser.patch"; sha256 = "0yyaqz8jlmn1bm37arggprqz0njb4lhjni2d9c8qfqj0kll0bam0"; }) - (fetchpatch { - url = "https://git.alpinelinux.org/aports/plain/testing/apparmor/0007-Do-not-build-install-vim-file-with-utils-package.patch?id=74b8427cc21f04e32030d047ae92caa618105b53"; - name = "0007-Do-not-build-install-vim-file-with-utils-package.patch"; - sha256 = "1m4dx901biqgnr4w4wz8a2z9r9dxyw7wv6m6mqglqwf2lxinqmp4"; - }) - # (alpine patches {1,4,5,6,8} are needed for apparmor 2.11, but not 2.12) ]; # Set to `true` after the next FIXME gets fixed or this gets some @@ -121,7 +126,11 @@ let libapparmor.python ]; - prePatch = prePatchCommon + '' + prePatch = prePatchCommon + + # Do not build vim file + lib.optionalString stdenv.hostPlatform.isMusl '' + sed -i ./utils/Makefile -e "/\/d" + '' + '' substituteInPlace ./utils/apparmor/easyprof.py --replace "/sbin/apparmor_parser" "${apparmor-parser}/bin/apparmor_parser" substituteInPlace ./utils/apparmor/aa.py --replace "/sbin/apparmor_parser" "${apparmor-parser}/bin/apparmor_parser" substituteInPlace ./utils/logprof.conf --replace "/sbin/apparmor_parser" "${apparmor-parser}/bin/apparmor_parser" @@ -132,7 +141,8 @@ let installFlags = [ "DESTDIR=$(out)" "BINDIR=$(out)/bin" "VIM_INSTALL_PATH=$(out)/share" "PYPREFIX=" ]; postInstall = '' - for prog in aa-audit aa-autodep aa-cleanprof aa-complain aa-disable aa-enforce aa-genprof aa-logprof aa-mergeprof aa-status aa-unconfined ; do + sed -i $out/bin/aa-unconfined -e "/my_env\['PATH'\]/d" + for prog in aa-audit aa-autodep aa-cleanprof aa-complain aa-disable aa-enforce aa-genprof aa-logprof aa-mergeprof aa-unconfined ; do wrapProgram $out/bin/$prog --prefix PYTHONPATH : "$out/lib/${python.libPrefix}/site-packages:$PYTHONPATH" done @@ -140,6 +150,13 @@ let # aa-notify checks its name and does not work named ".aa-notify-wrapped" mv $out/bin/aa-notify $out/bin/aa-notify-wrapped makeWrapper ${perl}/bin/perl $out/bin/aa-notify --set PERL5LIB ${libapparmor}/${perl.libPrefix} --add-flags $out/bin/aa-notify-wrapped + + substituteInPlace $out/bin/aa-remove-unknown \ + --replace "/lib/apparmor/rc.apparmor.functions" "${apparmor-parser}/lib/apparmor/rc.apparmor.functions" + wrapProgram $out/bin/aa-remove-unknown \ + --prefix PATH : ${lib.makeBinPath [gawk]} + + ln -s ${aa-teardown} $out/bin/aa-teardown ''; inherit doCheck; @@ -167,7 +184,7 @@ let prePatch = prePatchCommon; postPatch = "cd ./binutils"; makeFlags = [ "LANGS=" "USE_SYSTEM=1" ]; - installFlags = [ "DESTDIR=$(out)" "BINDIR=$(out)/bin" ]; + installFlags = [ "DESTDIR=$(out)" "BINDIR=$(out)/bin" "SBINDIR=$(out)/bin" ]; inherit doCheck; @@ -188,6 +205,9 @@ let substituteInPlace ./parser/Makefile --replace "/usr/include/linux/capability.h" "${linuxHeaders}/include/linux/capability.h" ## techdoc.pdf still doesn't build ... substituteInPlace ./parser/Makefile --replace "manpages htmlmanpages pdf" "manpages htmlmanpages" + substituteInPlace parser/rc.apparmor.functions \ + --replace "/sbin/apparmor_parser" "$out/bin/apparmor_parser" + sed -i parser/rc.apparmor.functions -e '2i . ${./fix-rc.apparmor.functions.sh}' ''; inherit patches; postPatch = "cd ./parser"; @@ -249,8 +269,35 @@ let meta = apparmor-meta "kernel patches"; }; + # Generate generic AppArmor rules in a file, + # from the closure of given rootPaths. + # To be included in an AppArmor profile like so: + # include "$(apparmorRulesFromClosure {} [pkgs.hello]}" + apparmorRulesFromClosure = + { # The store path of the derivation is given in $path + additionalRules ? [] + # TODO: factorize here some other common paths + # that may emerge from use cases. + , baseRules ? [ + "r $path" + "r $path/etc/**" + "r $path/share/**" + # Note that not all libraries are prefixed with "lib", + # eg. glibc-2.30/lib/ld-2.30.so + "mr $path/lib/**.so*" + # eg. glibc-2.30/lib/gconv/gconv-modules + "r $path/lib/**" + ] + , name ? "" + }: rootPaths: runCommand + ( "apparmor-closure-rules" + + lib.optionalString (name != "") "-${name}") {} '' + touch $out + while read -r path + do printf >>$out "%s,\n" ${lib.concatMapStringsSep " " (x: "\"${x}\"") (baseRules ++ additionalRules)} + done <${closureInfo {inherit rootPaths;}}/store-paths + ''; in - { inherit libapparmor @@ -259,5 +306,6 @@ in apparmor-parser apparmor-pam apparmor-profiles - apparmor-kernel-patches; + apparmor-kernel-patches + apparmorRulesFromClosure; } diff --git a/pkgs/os-specific/linux/apparmor/fix-rc.apparmor.functions.sh b/pkgs/os-specific/linux/apparmor/fix-rc.apparmor.functions.sh new file mode 100644 index 00000000000..ebc1baaa92d --- /dev/null +++ b/pkgs/os-specific/linux/apparmor/fix-rc.apparmor.functions.sh @@ -0,0 +1,32 @@ +aa_action() { + STRING=$1 + shift + $* + rc=$? + if [ $rc -eq 0 ] ; then + aa_log_success_msg $"$STRING " + else + aa_log_failure_msg $"$STRING " + fi + return $rc +} + +aa_log_success_msg() { + [ -n "$1" ] && echo -n $1 + echo ": done." +} + +aa_log_warning_msg() { + [ -n "$1" ] && echo -n $1 + echo ": Warning." +} + +aa_log_failure_msg() { + [ -n "$1" ] && echo -n $1 + echo ": Failed." +} + +aa_log_skipped_msg() { + [ -n "$1" ] && echo -n $1 + echo ": Skipped." +} diff --git a/pkgs/os-specific/linux/iputils/default.nix b/pkgs/os-specific/linux/iputils/default.nix index 56942d6d420..122a9ca1b7b 100644 --- a/pkgs/os-specific/linux/iputils/default.nix +++ b/pkgs/os-specific/linux/iputils/default.nix @@ -1,6 +1,7 @@ { lib, stdenv, fetchFromGitHub , meson, ninja, pkg-config, gettext, libxslt, docbook_xsl_ns , libcap, libidn2 +, apparmorRulesFromClosure }: let @@ -20,6 +21,8 @@ in stdenv.mkDerivation rec { sha256 = "08j2hfgnfh31vv9rn1ml7090j2lsvm9wdpdz13rz60rmyzrx9dq3"; }; + outputs = ["out" "apparmor"]; + mesonFlags = [ "-DBUILD_RARPD=true" "-DBUILD_TRACEROUTE6=true" @@ -34,6 +37,25 @@ in stdenv.mkDerivation rec { nativeBuildInputs = [ meson ninja pkg-config gettext libxslt.bin docbook_xsl_ns ]; buildInputs = [ libcap ] ++ lib.optional (!stdenv.hostPlatform.isMusl) libidn2; + postInstall = '' + install -D -m 644 /dev/stdin $apparmor/bin.ping < + $out/bin/ping { + include + include + include + include "${apparmorRulesFromClosure { name = "ping"; } + ([libcap] ++ lib.optional (!stdenv.hostPlatform.isMusl) libidn2)}" + include + capability net_raw, + network inet raw, + network inet6 raw, + mr $out/bin/ping, + r $out/share/locale/**, + r @{PROC}/@{pid}/environ, + } + EOF + ''; meta = with lib; { description = "A set of small useful utilities for Linux networking"; diff --git a/pkgs/tools/networking/inetutils/default.nix b/pkgs/tools/networking/inetutils/default.nix index 1290ec2bdb1..fe5a0d91585 100644 --- a/pkgs/tools/networking/inetutils/default.nix +++ b/pkgs/tools/networking/inetutils/default.nix @@ -1,4 +1,6 @@ -{ stdenv, lib, fetchurl, ncurses, perl, help2man }: +{ stdenv, lib, fetchurl, ncurses, perl, help2man +, apparmorRulesFromClosure +}: stdenv.mkDerivation rec { name = "inetutils-1.9.4"; @@ -8,6 +10,8 @@ stdenv.mkDerivation rec { sha256 = "05n65k4ixl85dc6rxc51b1b732gnmm8xnqi424dy9f1nz7ppb3xy"; }; + outputs = ["out" "apparmor"]; + patches = [ ./whois-Update-Canadian-TLD-server.patch ./service-name.patch @@ -41,6 +45,22 @@ stdenv.mkDerivation rec { installFlags = [ "SUIDMODE=" ]; + postInstall = '' + install -D -m 644 /dev/stdin $apparmor/bin.ping < + include + include + include "${apparmorRulesFromClosure { name = "ping"; } [stdenv.cc.libc]}" + include + capability net_raw, + network inet raw, + network inet6 raw, + mr $out/bin/ping, + } + EOF + ''; + meta = with lib; { description = "Collection of common network programs"; diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix index bc5c1b88046..b3fee4ce167 100644 --- a/pkgs/top-level/all-packages.nix +++ b/pkgs/top-level/all-packages.nix @@ -18758,7 +18758,7 @@ in inherit (callPackages ../os-specific/linux/apparmor { python = python3; }) libapparmor apparmor-utils apparmor-bin-utils apparmor-parser apparmor-pam - apparmor-profiles apparmor-kernel-patches; + apparmor-profiles apparmor-kernel-patches apparmorRulesFromClosure; aseq2json = callPackage ../os-specific/linux/aseq2json {};