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-rw-r--r--tv/3modules/consul.nix118
-rw-r--r--tv/3modules/default.nix9
-rw-r--r--tv/3modules/ejabberd.nix166
-rw-r--r--tv/3modules/iptables.nix126
4 files changed, 419 insertions, 0 deletions
diff --git a/tv/3modules/consul.nix b/tv/3modules/consul.nix
new file mode 100644
index 0000000..82a15c0
--- /dev/null
+++ b/tv/3modules/consul.nix
@@ -0,0 +1,118 @@
+{ config, lib, pkgs, ... }:
+
+# if quorum gets lost, then start any node with a config that doesn't contain bootstrap_expect
+# but -bootstrap
+# TODO consul-bootstrap HOST that actually does is
+# TODO tools to inspect state of a cluster in outage state
+
+with import ../4lib { inherit lib pkgs; };
+let
+ cfg = config.tv.consul;
+
+ out = {
+ options.tv.consul = api;
+ config = mkIf cfg.enable (mkMerge [
+ imp
+ { tv.iptables.input-retiolum-accept-new-tcp = [ "8300" "8301" ]; }
+ # TODO udp for 8301
+ ]);
+ };
+
+ api = {
+ enable = mkEnableOption "tv.consul";
+
+ dc = mkOption {
+ type = types.label;
+ };
+ hosts = mkOption {
+ type = with types; listOf host;
+ };
+ encrypt-file = mkOption {
+ type = types.str; # TODO path (but not just into store)
+ default = "/root/src/secrets/consul-encrypt.json";
+ };
+ data-dir = mkOption {
+ type = types.str; # TODO path (but not just into store)
+ default = "/var/lib/consul";
+ };
+ self = mkOption {
+ type = types.host;
+ };
+ server = mkOption {
+ type = types.bool;
+ default = false;
+ };
+ GOMAXPROCS = mkOption {
+ type = types.int;
+ default = cfg.self.cores;
+ };
+ };
+
+ consul-config = {
+ datacenter = cfg.dc;
+ data_dir = cfg.data-dir;
+ log_level = "INFO";
+ #node_name =
+ server = cfg.server;
+ enable_syslog = true;
+ retry_join =
+ # TODO allow consul in other nets than retiolum [maybe]
+ concatMap (host: host.nets.retiolum.addrs)
+ (filter (host: host.name != cfg.self.name) cfg.hosts);
+ leave_on_terminate = true;
+ } // optionalAttrs cfg.server {
+ bootstrap_expect = length cfg.hosts;
+ leave_on_terminate = false;
+ };
+
+ imp = {
+ environment.systemPackages = with pkgs; [
+ consul
+ ];
+
+ systemd.services.consul = {
+ after = [ "network.target" ];
+ wantedBy = [ "multi-user.target" ];
+ path = with pkgs; [
+ consul
+ ];
+ environment = {
+ GOMAXPROCS = toString cfg.GOMAXPROCS;
+ };
+ serviceConfig = {
+ PermissionsStartOnly = "true";
+ SyslogIdentifier = "consul";
+ User = user.name;
+ PrivateTmp = "true";
+ Restart = "always";
+ ExecStartPre = pkgs.writeScript "consul-init" ''
+ #! /bin/sh
+ mkdir -p ${cfg.data-dir}
+ chown ${user.name}: ${cfg.data-dir}
+ install -o ${user.name} -m 0400 ${cfg.encrypt-file} /tmp/encrypt.json
+ '';
+ ExecStart = pkgs.writeScript "consul-service" ''
+ #! /bin/sh
+ set -euf
+ exec >/dev/null
+ exec consul agent \
+ -config-file=${toFile "consul.json" (toJSON consul-config)} \
+ -config-file=/tmp/encrypt.json
+ '';
+ #-node=${cfg.self.fqdn} \
+ #ExecStart = "${tinc}/sbin/tincd -c ${confDir} -d 0 -U ${user} -D";
+ };
+ };
+
+ users.extraUsers = singleton {
+ inherit (user) name uid;
+ };
+ };
+
+ user = {
+ name = "consul";
+ uid = 2999951406; # genid consul
+ };
+
+in
+out
diff --git a/tv/3modules/default.nix b/tv/3modules/default.nix
new file mode 100644
index 0000000..bb10d82
--- /dev/null
+++ b/tv/3modules/default.nix
@@ -0,0 +1,9 @@
+_:
+
+{
+ imports = [
+ ./consul.nix
+ ./ejabberd.nix
+ ./iptables.nix
+ ];
+}
diff --git a/tv/3modules/ejabberd.nix b/tv/3modules/ejabberd.nix
new file mode 100644
index 0000000..2910a9a
--- /dev/null
+++ b/tv/3modules/ejabberd.nix
@@ -0,0 +1,166 @@
+{ config, lib, pkgs, ... }:
+
+with builtins;
+with lib;
+let
+ cfg = config.tv.ejabberd;
+
+ out = {
+ options.tv.ejabberd = api;
+ config = mkIf cfg.enable imp;
+ };
+
+ api = {
+ enable = mkEnableOption "tv.ejabberd";
+
+ certFile = mkOption {
+ type = types.str;
+ default = "/root/src/secrets/ejabberd.pem";
+ };
+
+ hosts = mkOption {
+ type = with types; listOf str;
+ };
+ };
+
+ imp = {
+ environment.systemPackages = [ my-ejabberdctl ];
+
+ systemd.services.ejabberd = {
+ wantedBy = [ "multi-user.target" ];
+ after = [ "network.target" ];
+ serviceConfig = {
+ Type = "oneshot";
+ RemainAfterExit = "yes";
+ PermissionsStartOnly = "true";
+ SyslogIdentifier = "ejabberd";
+ User = user.name;
+ ExecStartPre = pkgs.writeScript "ejabberd-start" ''
+ #! /bin/sh
+ install -o ${user.name} -m 0400 ${cfg.certFile} /etc/ejabberd/ejabberd.pem
+ '';
+ ExecStart = pkgs.writeScript "ejabberd-service" ''
+ #! /bin/sh
+ ${my-ejabberdctl}/bin/ejabberdctl start
+ '';
+ };
+ };
+
+ users.extraUsers = singleton {
+ inherit (user) name uid;
+ home = "/var/ejabberd";
+ createHome = true;
+ };
+ };
+
+ user = {
+ name = "ejabberd";
+ uid = 3499746127; # genid ejabberd
+ };
+
+ my-ejabberdctl = pkgs.writeScriptBin "ejabberdctl" ''
+ #! /bin/sh
+ set -euf
+ exec env \
+ SPOOLDIR=/var/ejabberd \
+ EJABBERD_CONFIG_PATH=${config-file} \
+ ${pkgs.ejabberd}/bin/ejabberdctl \
+ --logs /var/ejabberd \
+ "$@"
+ '';
+
+ config-file = pkgs.writeText "ejabberd.cfg" ''
+ {loglevel, 3}.
+ {hosts, ${toErlang cfg.hosts}}.
+ {listen,
+ [
+ {5222, ejabberd_c2s, [
+ starttls,
+ {certfile, "/etc/ejabberd/ejabberd.pem"},
+ {access, c2s},
+ {shaper, c2s_shaper},
+ {max_stanza_size, 65536}
+ ]},
+ {5269, ejabberd_s2s_in, [
+ {shaper, s2s_shaper},
+ {max_stanza_size, 131072}
+ ]},
+ {5280, ejabberd_http, [
+ captcha,
+ http_bind,
+ http_poll,
+ web_admin
+ ]}
+ ]}.
+ {s2s_use_starttls, required}.
+ {s2s_certfile, "/etc/ejabberd/ejabberd.pem"}.
+ {auth_method, internal}.
+ {shaper, normal, {maxrate, 1000}}.
+ {shaper, fast, {maxrate, 50000}}.
+ {max_fsm_queue, 1000}.
+ {acl, local, {user_regexp, ""}}.
+ {access, max_user_sessions, [{10, all}]}.
+ {access, max_user_offline_messages, [{5000, admin}, {100, all}]}.
+ {access, local, [{allow, local}]}.
+ {access, c2s, [{deny, blocked},
+ {allow, all}]}.
+ {access, c2s_shaper, [{none, admin},
+ {normal, all}]}.
+ {access, s2s_shaper, [{fast, all}]}.
+ {access, announce, [{allow, admin}]}.
+ {access, configure, [{allow, admin}]}.
+ {access, muc_admin, [{allow, admin}]}.
+ {access, muc_create, [{allow, local}]}.
+ {access, muc, [{allow, all}]}.
+ {access, pubsub_createnode, [{allow, local}]}.
+ {access, register, [{allow, all}]}.
+ {language, "en"}.
+ {modules,
+ [
+ {mod_adhoc, []},
+ {mod_announce, [{access, announce}]},
+ {mod_blocking,[]},
+ {mod_caps, []},
+ {mod_configure,[]},
+ {mod_disco, []},
+ {mod_irc, []},
+ {mod_http_bind, []},
+ {mod_last, []},
+ {mod_muc, [
+ {access, muc},
+ {access_create, muc_create},
+ {access_persistent, muc_create},
+ {access_admin, muc_admin}
+ ]},
+ {mod_offline, [{access_max_user_messages, max_user_offline_messages}]},
+ {mod_ping, []},
+ {mod_privacy, []},
+ {mod_private, []},
+ {mod_pubsub, [
+ {access_createnode, pubsub_createnode},
+ {ignore_pep_from_offline, true},
+ {last_item_cache, false},
+ {plugins, ["flat", "hometree", "pep"]}
+ ]},
+ {mod_register, [
+ {welcome_message, {"Welcome!",
+ "Hi.\nWelcome to this XMPP server."}},
+ {ip_access, [{allow, "127.0.0.0/8"},
+ {deny, "0.0.0.0/0"}]},
+ {access, register}
+ ]},
+ {mod_roster, []},
+ {mod_shared_roster,[]},
+ {mod_stats, []},
+ {mod_time, []},
+ {mod_vcard, []},
+ {mod_version, []}
+ ]}.
+ '';
+
+
+ # XXX this is a placeholder that happens to work the default strings.
+ toErlang = builtins.toJSON;
+
+in
+out
diff --git a/tv/3modules/iptables.nix b/tv/3modules/iptables.nix
new file mode 100644
index 0000000..cbf49f5
--- /dev/null
+++ b/tv/3modules/iptables.nix
@@ -0,0 +1,126 @@
+{ config, lib, pkgs, ... }:
+
+with builtins;
+with lib;
+let
+ cfg = config.tv.iptables;
+
+ out = {
+ options.tv.iptables = api;
+ config = mkIf cfg.enable imp;
+ };
+
+ api = {
+ enable = mkEnableOption "tv.iptables";
+
+ input-internet-accept-new-tcp = mkOption {
+ type = with types; listOf (either int str);
+ default = [];
+ };
+
+ input-retiolum-accept-new-tcp = mkOption {
+ type = with types; listOf (either int str);
+ default = [];
+ };
+ };
+
+ imp = {
+ networking.firewall.enable = false;
+
+ systemd.services.tv-iptables = {
+ description = "tv-iptables";
+ wantedBy = [ "network-pre.target" ];
+ before = [ "network-pre.target" ];
+ after = [ "systemd-modules-load.service" ];
+
+ path = with pkgs; [
+ iptables
+ ];
+
+ restartIfChanged = true;
+
+ serviceConfig = {
+ Type = "simple";
+ RemainAfterExit = true;
+ Restart = "always";
+ ExecStart = "@${startScript} tv-iptables_start";
+ };
+ };
+ };
+
+
+ accept-new-tcp = port:
+ "-p tcp -m tcp --dport ${port} -m conntrack --ctstate NEW -j ACCEPT";
+
+ rules = iptables-version:
+ pkgs.writeText "tv-iptables-rules${toString iptables-version}" ''
+ *nat
+ :PREROUTING ACCEPT [0:0]
+ :INPUT ACCEPT [0:0]
+ :OUTPUT ACCEPT [0:0]
+ :POSTROUTING ACCEPT [0:0]
+ ${concatMapStringsSep "\n" (rule: "-A PREROUTING ${rule}") ([]
+ ++ [
+ "! -i retiolum -p tcp -m tcp --dport 22 -j REDIRECT --to-ports 0"
+ "-p tcp -m tcp --dport 11423 -j REDIRECT --to-ports 22"
+ ]
+ )}
+ COMMIT
+ *filter
+ :INPUT DROP [0:0]
+ :FORWARD DROP [0:0]
+ :OUTPUT ACCEPT [0:0]
+ :Retiolum - [0:0]
+ ${concatMapStringsSep "\n" (rule: "-A INPUT ${rule}") ([]
+ ++ [
+ "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"
+ "-i lo -j ACCEPT"
+ ]
+ ++ map accept-new-tcp (unique (map toString cfg.input-internet-accept-new-tcp))
+ ++ ["-i retiolum -j Retiolum"]
+ )}
+ ${concatMapStringsSep "\n" (rule: "-A Retiolum ${rule}") ([]
+ ++ {
+ ip4tables = [
+ "-p icmp -m icmp --icmp-type echo-request -j ACCEPT"
+ ];
+ ip6tables = [
+ "-p ipv6-icmp -m icmp6 --icmpv6-type echo-request -j ACCEPT"
+ ];
+ }."ip${toString iptables-version}tables"
+ ++ map accept-new-tcp (unique (map toString cfg.input-retiolum-accept-new-tcp))
+ ++ {
+ ip4tables = [
+ "-p tcp -j REJECT --reject-with tcp-reset"
+ "-p udp -j REJECT --reject-with icmp-port-unreachable"
+ "-j REJECT --reject-with icmp-proto-unreachable"
+ ];
+ ip6tables = [
+ "-p tcp -j REJECT --reject-with tcp-reset"
+ "-p udp -j REJECT --reject-with icmp6-port-unreachable"
+ "-j REJECT"
+ ];
+ }."ip${toString iptables-version}tables"
+ )}
+ COMMIT
+ '';
+
+ startScript = pkgs.writeScript "tv-iptables_start" ''
+ #! /bin/sh
+ set -euf
+ iptables-restore < ${rules 4}
+ ip6tables-restore < ${rules 6}
+ '';
+
+in
+out
+
+#let
+# cfg = config.tv.iptables;
+# arg' = arg // { inherit cfg; };
+#in
+#
+#{
+# options.tv.iptables = import ./options.nix arg';
+# config = lib.mkIf cfg.enable (import ./config.nix arg');
+#}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 09:30:04 +0000