commit cdd7310a503481e3c40266be45b6b8256d95ecbd · pyrox.dev/nixpkgs

+72 -16
nixos/modules/services/networking/avahi-daemon.nix
···

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       # Avahi daemon.

     

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       { config, lib, pkgs, ... }:

     

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       { config, lib, utils, pkgs, ... }:

     

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       with lib;

     

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         cfg = config.services.avahi;

     

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         inherit (pkgs) avahi;

     

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         # We must escape interfaces due to the systemd interpretation

     

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         subsystemDevice = interface:

     

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           "sys-subsystem-net-devices-${utils.escapeSystemdPath interface}.device";

     

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         avahiDaemonConf = with cfg; pkgs.writeText "avahi-daemon.conf" ''

     

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           [server]

     
···

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           browse-domains=${concatStringsSep ", " browseDomains}

     

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           use-ipv4=${if ipv4 then "yes" else "no"}

     

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           use-ipv6=${if ipv6 then "yes" else "no"}

     

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           ${optionalString (interfaces!=null) "allow-interfaces=${concatStringsSep "," interfaces}"}

     

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           [wide-area]

     

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           enable-wide-area=${if wideArea then "yes" else "no"}

     

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           [publish]

     

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           disable-publishing=${if publishing then "no" else "yes"}

     

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           disable-publishing=${if publish.enable then "no" else "yes"}

     

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           disable-user-service-publishing=${if publish.userServices then "no" else "yes"}

     

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           publish-addresses=${if publish.userServices || publish.addresses then "yes" else "no"}

     

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           publish-hinfo=${if publish.hinfo then "yes" else "no"}

     

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           publish-workstation=${if publish.workstation then "yes" else "no"}

     

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           publish-domain=${if publish.domain then "yes" else "no"}

     

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         '';

     

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       in

     
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               description = ''Whether to use IPv6'';

     

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             };

     

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             interfaces = mkOption {

     

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               type = types.nullOr (types.listOf types.str);

     

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               default = null;

     

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               description = ''

     

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                 List of network interfaces that should be used by the <command>avahi-daemon</command>.

     

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                 Other interfaces will be ignored. If <literal>null</literal> all local interfaces

     

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                 except loopback and point-to-point will be used.

     

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               '';

     

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             };

     

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             wideArea = mkOption {

     

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               default = true;

     

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               description = ''Whether to enable wide-area service discovery.'';

     

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             };

     

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             publishing = mkOption {

     

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               default = true;

     

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               description = ''Whether to allow publishing.'';

     

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             publish = {

     

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               enable = mkOption {

     

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                 default = false;

     

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                 description = ''Whether to allow publishing in general.'';

     

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               };

     

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               userServices = mkOption {

     

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                 default = false;

     

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                 description = ''Whether to publish user services. Will set <literal>addresses=true</literal>.'';

     

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               };

     

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               addresses = mkOption {

     

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                 default = false;

     

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                 description = ''Whether to register mDNS address records for all local IP addresses.'';

     

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               };

     

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               hinfo = mkOption {

     

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                 default = false;

     

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                 description = ''

     

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                   Whether to register an mDNS HINFO record which contains information about the

     

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                   local operating system and CPU.

     

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                 '';

     

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               };

     

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               workstation = mkOption {

     

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                 default = false;

     

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                 description = ''Whether to register a service of type "_workstation._tcp" on the local LAN.'';

     

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               };

     

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               domain = mkOption {

     

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                 default = false;

     

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                 description = ''Whether to announce the locally used domain name for browsing by other hosts.'';

     

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               };

     

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             };

     

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             nssmdns = mkOption {

     
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           system.nssModules = optional cfg.nssmdns pkgs.nssmdns;

     

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           environment.systemPackages = [ avahi ];

     

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           environment.systemPackages = [ pkgs.avahi ];

     

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           jobs.avahi_daemon =

     

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             { name = "avahi-daemon";

     

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           systemd.services.avahi-daemon =

     

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             let

     

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               deps = optionals (cfg.interfaces!=null) (map subsystemDevice cfg.interfaces);

     

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             in

     

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             { description = "Avahi daemon";

     

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               wantedBy = [ "ip-up.target" ];

     

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               bindsTo = deps;

     

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               after = deps;

     

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               before = [ "ip-up.target" ];

     

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               # Receive restart event after resume

     

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               partOf = [ "post-resume.target" ];

     

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               startOn = "ip-up";

     

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               path = [ pkgs.coreutils pkgs.avahi ];

     

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               preStart = "mkdir -p /var/run/avahi-daemon";

     

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               script =

     

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                 ''

     

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                   export PATH="${avahi}/bin:${avahi}/sbin:$PATH"

     

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                   # Make NSS modules visible so that `avahi_nss_support ()' can

     

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                   # return a sensible value.

     

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                   export LD_LIBRARY_PATH="${config.system.nssModules.path}"

     

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                   mkdir -p /var/run/avahi-daemon

     

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                   exec ${avahi}/sbin/avahi-daemon --syslog -f "${avahiDaemonConf}"

     

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                   exec ${pkgs.avahi}/sbin/avahi-daemon --syslog -f "${avahiDaemonConf}"

     

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                 '';

     

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             };

     

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           services.dbus.enable = true;

     

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           services.dbus.packages = [avahi];

     

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           services.dbus.packages = [ pkgs.avahi ];

     

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           # Enabling Avahi without exposing it in the firewall doesn't make

     

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           # sense.