317 lines
9.4 KiB
Nix
317 lines
9.4 KiB
Nix
{ config, lib, pkgs, ...}:
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with lib;
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let
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cfg = config.services.znc;
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defaultUser = "znc"; # Default user to own process.
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# Default user and pass:
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# un=znc
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# pw=nixospass
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defaultUserName = "znc";
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defaultPassBlock = "
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<Pass password>
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Method = sha256
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Hash = e2ce303c7ea75c571d80d8540a8699b46535be6a085be3414947d638e48d9e93
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Salt = l5Xryew4g*!oa(ECfX2o
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</Pass>
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";
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modules = pkgs.buildEnv {
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name = "znc-modules";
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paths = cfg.modulePackages;
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};
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# Keep znc.conf in nix store, then symlink or copy into `dataDir`, depending on `mutable`.
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mkZncConf = confOpts: ''
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// Also check http://en.znc.in/wiki/Configuration
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AnonIPLimit = 10
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ConnectDelay = 5
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# Add `LoadModule = x` for each module...
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${concatMapStrings (n: "LoadModule = ${n}\n") confOpts.modules}
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MaxBufferSize = 500
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ProtectWebSessions = true
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SSLCertFile = ${cfg.dataDir}/znc.pem
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ServerThrottle = 30
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Skin = dark-clouds
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StatusPrefix = *
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Version = 1.2
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<Listener listener0>
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AllowIRC = true
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AllowWeb = true
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IPv4 = true
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IPv6 = false
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Port = ${if confOpts.useSSL then "+" else ""}${toString confOpts.port}
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SSL = ${if confOpts.useSSL then "true" else "false"}
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</Listener>
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<User ${confOpts.userName}>
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Admin = true
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Allow = *
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AltNick = ${confOpts.nick}_
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AppendTimestamp = false
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AutoClearChanBuffer = false
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Buffer = 150
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ChanModes = +stn
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DenyLoadMod = false
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DenySetBindHost = false
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Ident = ident
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JoinTries = 10
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MaxJoins = 0
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MaxNetworks = 1
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MultiClients = true
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Nick = ${confOpts.nick}
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PrependTimestamp = true
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QuitMsg = Quit
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RealName = ${confOpts.nick}
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TimestampFormat = [%H:%M:%S]
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${concatMapStrings (n: "LoadModule = ${n}\n") confOpts.userModules}
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${confOpts.passBlock}
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</User>
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${confOpts.extraZncConf}
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'';
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zncConfFile = pkgs.writeTextFile {
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name = "znc.conf";
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text = if cfg.zncConf != ""
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then cfg.zncConf
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else mkZncConf cfg.confOptions;
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};
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in
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{
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###### Interface
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options = {
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services.znc = {
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enable = mkOption {
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default = false;
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example = true;
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type = types.bool;
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description = ''
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Enable a ZNC service for a user.
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'';
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};
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user = mkOption {
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default = "znc";
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example = "john";
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type = types.string;
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description = ''
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The name of an existing user account to use to own the ZNC server process.
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If not specified, a default user will be created to own the process.
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'';
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};
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dataDir = mkOption {
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default = "/var/lib/znc/";
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example = "/home/john/.znc/";
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type = types.path;
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description = ''
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The data directory. Used for configuration files and modules.
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'';
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};
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zncConf = mkOption {
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default = "";
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example = "See: http://wiki.znc.in/Configuration";
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type = types.lines;
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description = ''
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The contents of the `znc.conf` file to use when creating it.
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If specified, `confOptions` will be ignored, and this value, as-is, will be used.
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If left empty, a conf file with default values will be used.
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Recommended to generate with `znc --makeconf` command.
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'';
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};
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/* TODO: add to the documentation of the current module:
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Values to use when creating a `znc.conf` file.
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confOptions = {
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modules = [ "log" ];
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userName = "john";
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nick = "johntron";
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};
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*/
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confOptions = {
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modules = mkOption {
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type = types.listOf types.str;
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default = [ "partyline" "webadmin" "adminlog" "log" ];
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example = [ "partyline" "webadmin" "adminlog" "log" ];
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description = ''
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A list of modules to include in the `znc.conf` file.
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'';
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};
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userModules = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "fish" "push" ];
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description = ''
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A list of user modules to include in the `znc.conf` file.
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'';
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};
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userName = mkOption {
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default = defaultUserName;
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example = "johntron";
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type = types.string;
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description = ''
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The user name to use when generating the `znc.conf` file.
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This is the user name used by the user logging into the ZNC web admin.
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'';
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};
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nick = mkOption {
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default = "znc-user";
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example = "john";
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type = types.string;
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description = ''
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The IRC nick to use when generating the `znc.conf` file.
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'';
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};
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passBlock = mkOption {
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default = defaultPassBlock;
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example = "Must be the block generated by the `znc --makepass` command.";
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type = types.string;
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description = ''
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The pass block to use when generating the `znc.conf` file.
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This is the password used by the user logging into the ZNC web admin.
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This is the block generated by the `znc --makepass` command.
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!!! If not specified, please change this after starting the service. !!!
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'';
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};
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port = mkOption {
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default = 5000;
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example = 5000;
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type = types.int;
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description = ''
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Specifies the port on which to listen.
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'';
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};
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useSSL = mkOption {
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default = true;
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example = true;
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type = types.bool;
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description = ''
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Indicates whether the ZNC server should use SSL when listening on the specified port.
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'';
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};
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extraZncConf = mkOption {
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default = "";
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type = types.lines;
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description = ''
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Extra config to `znc.conf` file
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'';
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};
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};
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modulePackages = mkOption {
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type = types.listOf types.package;
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default = [ ];
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example = literalExample "[ pkgs.zncModules.fish pkgs.zncModules.push ]";
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description = ''
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A list of global znc module packages to add to znc.
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'';
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};
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mutable = mkOption {
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default = false;
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example = true;
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type = types.bool;
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description = ''
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Indicates whether to allow the contents of the `dataDir` directory to be changed
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by the user at run-time.
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If true, modifications to the ZNC configuration after its initial creation are not
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overwritten by a NixOS system rebuild.
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If false, the ZNC configuration is rebuilt by every system rebuild.
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If the user wants to manage the ZNC service using the web admin interface, this value
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should be set to true.
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'';
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};
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extraFlags = mkOption {
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default = [ ];
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example = [ "--debug" ];
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type = types.listOf types.str;
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description = ''
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Extra flags to use when executing znc command.
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'';
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};
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};
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};
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###### Implementation
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config = mkIf cfg.enable {
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systemd.services.znc = {
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description = "ZNC Server";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.service" ];
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serviceConfig = {
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User = cfg.user;
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Restart = "always";
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ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
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ExecStop = "${pkgs.coreutils}/bin/kill -INT $MAINPID";
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};
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preStart = ''
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${pkgs.coreutils}/bin/mkdir -p ${cfg.dataDir}/configs
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# If mutable, regenerate conf file every time.
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${optionalString (!cfg.mutable) ''
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${pkgs.coreutils}/bin/echo "znc is set to be system-managed. Now deleting old znc.conf file to be regenerated."
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${pkgs.coreutils}/bin/rm -f ${cfg.dataDir}/configs/znc.conf
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''}
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# Ensure essential files exist.
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if [[ ! -f ${cfg.dataDir}/configs/znc.conf ]]; then
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${pkgs.coreutils}/bin/echo "No znc.conf file found in ${cfg.dataDir}. Creating one now."
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${pkgs.coreutils}/bin/cp --no-clobber ${zncConfFile} ${cfg.dataDir}/configs/znc.conf
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${pkgs.coreutils}/bin/chmod u+rw ${cfg.dataDir}/configs/znc.conf
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${pkgs.coreutils}/bin/chown ${cfg.user} ${cfg.dataDir}/configs/znc.conf
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fi
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if [[ ! -f ${cfg.dataDir}/znc.pem ]]; then
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${pkgs.coreutils}/bin/echo "No znc.pem file found in ${cfg.dataDir}. Creating one now."
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${pkgs.znc}/bin/znc --makepem --datadir ${cfg.dataDir}
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fi
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# Symlink modules
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rm ${cfg.dataDir}/modules || true
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ln -fs ${modules}/lib/znc ${cfg.dataDir}/modules
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'';
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script = "${pkgs.znc}/bin/znc --foreground --datadir ${cfg.dataDir} ${toString cfg.extraFlags}";
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};
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users.extraUsers = optional (cfg.user == defaultUser)
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{ name = defaultUser;
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description = "ZNC server daemon owner";
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group = defaultUser;
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uid = config.ids.uids.znc;
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home = cfg.dataDir;
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createHome = true;
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};
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users.extraGroups = optional (cfg.user == defaultUser)
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{ name = defaultUser;
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gid = config.ids.gids.znc;
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members = [ defaultUser ];
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};
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};
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}
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