diff options
Diffstat (limited to 'nixpkgs/nixos/modules/services/networking/gns3-server.nix')
| -rw-r--r-- | nixpkgs/nixos/modules/services/networking/gns3-server.nix | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/networking/gns3-server.nix b/nixpkgs/nixos/modules/services/networking/gns3-server.nix new file mode 100644 index 000000000000..25583765de67 --- /dev/null +++ b/nixpkgs/nixos/modules/services/networking/gns3-server.nix @@ -0,0 +1,263 @@ +{ config, lib, pkgs, ... }: + +let + cfg = config.services.gns3-server; + + settingsFormat = pkgs.formats.ini { }; + configFile = settingsFormat.generate "gns3-server.conf" cfg.settings; + +in { + meta = { + doc = ./gns3-server.md; + maintainers = [ lib.maintainers.anthonyroussel ]; + }; + + options = { + services.gns3-server = { + enable = lib.mkEnableOption (lib.mdDoc "GNS3 Server daemon"); + + package = lib.mkPackageOptionMD pkgs "gns3-server" { }; + + auth = { + enable = lib.mkEnableOption (lib.mdDoc "password based HTTP authentication to access the GNS3 Server"); + + user = lib.mkOption { + type = lib.types.nullOr lib.types.str; + default = null; + example = "gns3"; + description = lib.mdDoc ''Username used to access the GNS3 Server.''; + }; + + passwordFile = lib.mkOption { + type = lib.types.nullOr lib.types.path; + default = null; + example = "/run/secrets/gns3-server-password"; + description = lib.mdDoc '' + A file containing the password to access the GNS3 Server. + + ::: {.warning} + This should be a string, not a nix path, since nix paths + are copied into the world-readable nix store. + ::: + ''; + }; + }; + + settings = lib.mkOption { + type = lib.types.submodule { freeformType = settingsFormat.type; }; + default = {}; + example = { host = "127.0.0.1"; port = 3080; }; + description = lib.mdDoc '' + The global options in `config` file in ini format. + + Refer to <https://docs.gns3.com/docs/using-gns3/administration/gns3-server-configuration-file/> + for all available options. + ''; + }; + + log = { + file = lib.mkOption { + type = lib.types.nullOr lib.types.path; + default = "/var/log/gns3/server.log"; + description = lib.mdDoc ''Path of the file GNS3 Server should log to.''; + }; + + debug = lib.mkEnableOption (lib.mdDoc "debug logging"); + }; + + ssl = { + enable = lib.mkEnableOption (lib.mdDoc "SSL encryption"); + + certFile = lib.mkOption { + type = lib.types.nullOr lib.types.path; + default = null; + example = "/var/lib/gns3/ssl/server.pem"; + description = lib.mdDoc '' + Path to the SSL certificate file. This certificate will + be offered to, and may be verified by, clients. + ''; + }; + + keyFile = lib.mkOption { + type = lib.types.nullOr lib.types.path; + default = null; + example = "/var/lib/gns3/ssl/server.key"; + description = lib.mdDoc "Private key file for the certificate."; + }; + }; + + dynamips = { + enable = lib.mkEnableOption (lib.mdDoc ''Whether to enable Dynamips support.''); + package = lib.mkPackageOptionMD pkgs "dynamips" { }; + }; + + ubridge = { + enable = lib.mkEnableOption (lib.mdDoc ''Whether to enable uBridge support.''); + package = lib.mkPackageOptionMD pkgs "ubridge" { }; + }; + + vpcs = { + enable = lib.mkEnableOption (lib.mdDoc ''Whether to enable VPCS support.''); + package = lib.mkPackageOptionMD pkgs "vpcs" { }; + }; + }; + }; + + config = let + flags = { + enableDocker = config.virtualisation.docker.enable; + enableLibvirtd = config.virtualisation.libvirtd.enable; + }; + + in lib.mkIf cfg.enable { + assertions = [ + { + assertion = cfg.ssl.enable -> cfg.ssl.certFile != null; + message = "Please provide a certificate to use for SSL encryption."; + } + { + assertion = cfg.ssl.enable -> cfg.ssl.keyFile != null; + message = "Please provide a private key to use for SSL encryption."; + } + { + assertion = cfg.auth.enable -> cfg.auth.user != null; + message = "Please provide a username to use for HTTP authentication."; + } + { + assertion = cfg.auth.enable -> cfg.auth.passwordFile != null; + message = "Please provide a password file to use for HTTP authentication."; + } + ]; + + users.groups.ubridge = lib.mkIf cfg.ubridge.enable { }; + + security.wrappers.ubridge = lib.mkIf cfg.ubridge.enable { + capabilities = "cap_net_raw,cap_net_admin=eip"; + group = "ubridge"; + owner = "root"; + permissions = "u=rwx,g=rx,o=r"; + source = lib.getExe cfg.ubridge.package; + }; + + services.gns3-server.settings = lib.mkMerge [ + { + Server = { + appliances_path = lib.mkDefault "/var/lib/gns3/appliances"; + configs_path = lib.mkDefault "/var/lib/gns3/configs"; + images_path = lib.mkDefault "/var/lib/gns3/images"; + projects_path = lib.mkDefault "/var/lib/gns3/projects"; + symbols_path = lib.mkDefault "/var/lib/gns3/symbols"; + }; + } + (lib.mkIf (cfg.ubridge.enable) { + Server.ubridge_path = lib.mkDefault (lib.getExe cfg.ubridge.package); + }) + (lib.mkIf (cfg.auth.enable) { + Server = { + auth = lib.mkDefault (lib.boolToString cfg.auth.enable); + user = lib.mkDefault cfg.auth.user; + password = lib.mkDefault "@AUTH_PASSWORD@"; + }; + }) + (lib.mkIf (cfg.vpcs.enable) { + VPCS.vpcs_path = lib.mkDefault (lib.getExe cfg.vpcs.package); + }) + (lib.mkIf (cfg.dynamips.enable) { + Dynamips.dynamips_path = lib.mkDefault (lib.getExe cfg.dynamips.package); + }) + ]; + + systemd.services.gns3-server = let + commandArgs = lib.cli.toGNUCommandLineShell { } { + config = "/etc/gns3/gns3_server.conf"; + pid = "/run/gns3/server.pid"; + log = cfg.log.file; + ssl = cfg.ssl.enable; + # These are implicitly not set if `null` + certfile = cfg.ssl.certFile; + certkey = cfg.ssl.keyFile; + }; + in + { + description = "GNS3 Server"; + + after = [ "network.target" "network-online.target" ]; + wantedBy = [ "multi-user.target" ]; + wants = [ "network-online.target" ]; + + # configFile cannot be stored in RuntimeDirectory, because GNS3 + # uses the `--config` base path to stores supplementary configuration files at runtime. + # + preStart = '' + install -m660 ${configFile} /etc/gns3/gns3_server.conf + + ${lib.optionalString cfg.auth.enable '' + ${pkgs.replace-secret}/bin/replace-secret \ + '@AUTH_PASSWORD@' \ + "''${CREDENTIALS_DIRECTORY}/AUTH_PASSWORD" \ + /etc/gns3/gns3_server.conf + ''} + ''; + + path = lib.optional flags.enableLibvirtd pkgs.qemu; + + reloadTriggers = [ configFile ]; + + serviceConfig = { + ConfigurationDirectory = "gns3"; + ConfigurationDirectoryMode = "0750"; + DynamicUser = true; + Environment = "HOME=%S/gns3"; + ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID"; + ExecStart = "${lib.getExe cfg.package} ${commandArgs}"; + Group = "gns3"; + LimitNOFILE = 16384; + LoadCredential = lib.mkIf cfg.auth.enable [ "AUTH_PASSWORD:${cfg.auth.passwordFile}" ]; + LogsDirectory = "gns3"; + LogsDirectoryMode = "0750"; + PIDFile = "/run/gns3/server.pid"; + Restart = "on-failure"; + RestartSec = 5; + RuntimeDirectory = "gns3"; + StateDirectory = "gns3"; + StateDirectoryMode = "0750"; + SupplementaryGroups = lib.optional flags.enableDocker "docker" + ++ lib.optional flags.enableLibvirtd "libvirtd" + ++ lib.optional cfg.ubridge.enable "ubridge"; + User = "gns3"; + WorkingDirectory = "%S/gns3"; + + # Hardening + DeviceAllow = lib.optional flags.enableLibvirtd "/dev/kvm"; + DevicePolicy = "closed"; + LockPersonality = true; + MemoryDenyWriteExecute = true; + NoNewPrivileges = true; + PrivateTmp = true; + PrivateUsers = true; + # Don't restrict ProcSubset because python3Packages.psutil requires read access to /proc/stat + # ProcSubset = "pid"; + ProtectClock = true; + ProtectControlGroups = true; + ProtectHome = true; + ProtectHostname = true; + ProtectKernelLogs = true; + ProtectKernelModules = true; + ProtectKernelTunables = true; + ProtectProc = "invisible"; + ProtectSystem = "strict"; + RestrictAddressFamilies = [ + "AF_INET" + "AF_INET6" + "AF_NETLINK" + "AF_UNIX" + "AF_PACKET" + ]; + RestrictNamespaces = true; + RestrictRealtime = true; + RestrictSUIDSGID = true; + UMask = "0077"; + }; + }; + }; +} |