265 lines
8.5 KiB
Nix
265 lines
8.5 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.asterisk;
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asteriskUser = "asterisk";
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asteriskGroup = "asterisk";
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varlibdir = "/var/lib/asterisk";
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spooldir = "/var/spool/asterisk";
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logdir = "/var/log/asterisk";
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# Add filecontents from files of useTheseDefaultConfFiles to confFiles, do not override
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defaultConfFiles = subtractLists (attrNames cfg.confFiles) cfg.useTheseDefaultConfFiles;
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allConfFiles =
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cfg.confFiles //
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builtins.listToAttrs (map (x: { name = x;
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value = builtins.readFile (cfg.package + "/etc/asterisk/" + x); })
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defaultConfFiles);
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asteriskEtc = pkgs.stdenv.mkDerivation
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((mapAttrs' (name: value: nameValuePair
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# Fudge the names to make bash happy
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((replaceChars ["."] ["_"] name) + "_")
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(value)
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) allConfFiles) //
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{
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confFilesString = concatStringsSep " " (
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attrNames allConfFiles
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);
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name = "asterisk-etc";
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# Default asterisk.conf file
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# (Notice that astetcdir will be set to the path of this derivation)
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asteriskConf = ''
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[directories]
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astetcdir => /etc/asterisk
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astmoddir => ${cfg.package}/lib/asterisk/modules
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astvarlibdir => /var/lib/asterisk
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astdbdir => /var/lib/asterisk
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astkeydir => /var/lib/asterisk
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astdatadir => /var/lib/asterisk
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astagidir => /var/lib/asterisk/agi-bin
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astspooldir => /var/spool/asterisk
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astrundir => /var/run/asterisk
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astlogdir => /var/log/asterisk
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astsbindir => ${cfg.package}/sbin
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'';
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extraConf = cfg.extraConfig;
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# Loading all modules by default is considered sensible by the authors of
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# "Asterisk: The Definitive Guide". Secure sites will likely want to
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# specify their own "modules.conf" in the confFiles option.
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modulesConf = ''
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[modules]
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autoload=yes
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'';
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# Use syslog for logging so logs can be viewed with journalctl
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loggerConf = ''
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[general]
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[logfiles]
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syslog.local0 => notice,warning,error
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'';
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buildCommand = ''
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mkdir -p "$out"
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# Create asterisk.conf, pointing astetcdir to the path of this derivation
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echo "$asteriskConf" | sed "s|@out@|$out|g" > "$out"/asterisk.conf
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echo "$extraConf" >> "$out"/asterisk.conf
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echo "$modulesConf" > "$out"/modules.conf
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echo "$loggerConf" > "$out"/logger.conf
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# Config files specified in confFiles option override all other files
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for i in $confFilesString; do
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conf=$(echo "$i"_ | sed 's/\./_/g')
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echo "''${!conf}" > "$out"/"$i"
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done
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'';
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});
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in
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{
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options = {
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services.asterisk = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable the Asterisk PBX server.
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'';
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};
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extraConfig = mkOption {
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default = "";
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type = types.lines;
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example = ''
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[options]
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verbose=3
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debug=3
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'';
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description = ''
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Extra configuration options appended to the default
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<literal>asterisk.conf</literal> file.
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'';
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};
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confFiles = mkOption {
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default = {};
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type = types.attrsOf types.str;
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example = literalExample
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''
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{
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"extensions.conf" = '''
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[tests]
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; Dial 100 for "hello, world"
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exten => 100,1,Answer()
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same => n,Wait(1)
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same => n,Playback(hello-world)
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same => n,Hangup()
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[softphones]
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include => tests
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[unauthorized]
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''';
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"sip.conf" = '''
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[general]
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allowguest=no ; Require authentication
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context=unauthorized ; Send unauthorized users to /dev/null
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srvlookup=no ; Don't do DNS lookup
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udpbindaddr=0.0.0.0 ; Listen on all interfaces
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nat=force_rport,comedia ; Assume device is behind NAT
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[softphone](!)
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type=friend ; Match on username first, IP second
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context=softphones ; Send to softphones context in
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; extensions.conf file
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host=dynamic ; Device will register with asterisk
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disallow=all ; Manually specify codecs to allow
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allow=g722
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allow=ulaw
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allow=alaw
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[myphone](softphone)
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secret=GhoshevFew ; Change this password!
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''';
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"logger.conf" = '''
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[general]
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[logfiles]
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; Add debug output to log
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syslog.local0 => notice,warning,error,debug
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''';
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}
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'';
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description = ''
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Sets the content of config files (typically ending with
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<literal>.conf</literal>) in the Asterisk configuration directory.
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Note that if you want to change <literal>asterisk.conf</literal>, it
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is preferable to use the <option>services.asterisk.extraConfig</option>
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option over this option. If <literal>"asterisk.conf"</literal> is
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specified with the <option>confFiles</option> option (not recommended),
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you must be prepared to set your own <literal>astetcdir</literal>
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path.
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See
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<link xlink:href="http://www.asterisk.org/community/documentation"/>
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for more examples of what is possible here.
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'';
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};
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useTheseDefaultConfFiles = mkOption {
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default = [ "ari.conf" "acl.conf" "agents.conf" "amd.conf" "calendar.conf" "cdr.conf" "cdr_syslog.conf" "cdr_custom.conf" "cel.conf" "cel_custom.conf" "cli_aliases.conf" "confbridge.conf" "dundi.conf" "features.conf" "hep.conf" "iax.conf" "pjsip.conf" "pjsip_wizard.conf" "phone.conf" "phoneprov.conf" "queues.conf" "res_config_sqlite3.conf" "res_parking.conf" "statsd.conf" "udptl.conf" "unistim.conf" ];
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type = types.listOf types.str;
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example = [ "sip.conf" "dundi.conf" ];
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description = ''Sets these config files to the default content. The default value for
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this option contains all necesscary files to avoid errors at startup.
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This does not override settings via <option>services.asterisk.confFiles</option>.
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'';
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};
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extraArguments = mkOption {
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default = [];
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type = types.listOf types.str;
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example =
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[ "-vvvddd" "-e" "1024" ];
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description = ''
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Additional command line arguments to pass to Asterisk.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.asterisk;
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defaultText = "pkgs.asterisk";
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description = "The Asterisk package to use.";
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};
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = [ cfg.package ];
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environment.etc.asterisk.source = asteriskEtc;
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users.extraUsers.asterisk =
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{ name = asteriskUser;
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group = asteriskGroup;
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uid = config.ids.uids.asterisk;
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description = "Asterisk daemon user";
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home = varlibdir;
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};
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users.extraGroups.asterisk =
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{ name = asteriskGroup;
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gid = config.ids.gids.asterisk;
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};
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systemd.services.asterisk = {
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description = ''
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Asterisk PBX server
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'';
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wantedBy = [ "multi-user.target" ];
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# Do not restart, to avoid disruption of running calls. Restart unit by yourself!
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restartIfChanged = false;
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preStart = ''
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# Copy skeleton directory tree to /var
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for d in '${varlibdir}' '${spooldir}' '${logdir}'; do
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# TODO: Make exceptions for /var directories that likely should be updated
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if [ ! -e "$d" ]; then
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mkdir -p "$d"
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cp --recursive ${cfg.package}/"$d"/* "$d"/
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chown --recursive ${asteriskUser}:${asteriskGroup} "$d"
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find "$d" -type d | xargs chmod 0755
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fi
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done
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'';
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serviceConfig = {
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ExecStart =
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let
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# FIXME: This doesn't account for arguments with spaces
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argString = concatStringsSep " " cfg.extraArguments;
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in
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"${cfg.package}/bin/asterisk -U ${asteriskUser} -C /etc/asterisk/asterisk.conf ${argString} -F";
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ExecReload = ''${cfg.package}/bin/asterisk -x "core reload"
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'';
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Type = "forking";
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PIDFile = "/var/run/asterisk/asterisk.pid";
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};
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};
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};
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}
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