feat(dhcp): dhcp configuration
limit to 300 vlans because of freeRadius limitation
This commit is contained in:
parent
f9250e8886
commit
e9c5489bc2
6 changed files with 571 additions and 23 deletions
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@ -1,4 +1,9 @@
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{ config, lib, ... }:
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{
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config,
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lib,
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pkgs,
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...
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}:
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{
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imports = [ ./module.nix ];
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@ -52,6 +57,26 @@
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);
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radiusClients = { };
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extra-mods = {
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dhcp_sql = import ./mod-dhcp_sql.nix {
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inherit pkgs;
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vlans = import ../user_vlans.nix;
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};
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dhcp_sqlippool = ./mod-dhcp_sqlippool;
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};
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extra-sites = {
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dhcp = import ./site-dhcp.nix {
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inherit pkgs;
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vlans = import ../user_vlans.nix;
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};
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};
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dictionary = {
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Client-Vlan = "integer";
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Server-IP = "ipaddr";
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Broadcast-IP = "ipaddr";
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};
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checkConfiguration = true;
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};
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age-secrets.autoMatch = [ "radius" ];
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101
machines/vault01/k-radius/dhcp-sqlsquema.nix
Normal file
101
machines/vault01/k-radius/dhcp-sqlsquema.nix
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@ -0,0 +1,101 @@
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{ pkgs, vlans }:
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let
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mkVlan =
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{
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vlan,
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prefix24nb,
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prefix27nb,
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...
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}:
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let
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mkIp =
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idx:
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let
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id = 256 * prefix24nb + prefix27nb + 2 + idx;
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in
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"(${toString id}, 'pool-${toString vlan}', '10.0.${toString prefix24nb}.${
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toString (prefix27nb + 2 + idx)
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}', 1)";
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ipList = builtins.genList mkIp 29;
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in
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''
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INSERT INTO dhcpippool (id, pool_name, framedipaddress, status_id) VALUES
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${builtins.concatStringsSep ", " ipList};
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'';
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in
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pkgs.writeText "dhcp-schema.sql" ''
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-----------------------------------------------------------------------------
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-- $Id: 54a9abbf01d4161cadb304cdd3755856c6f15442 $ --
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-- --
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-- schema.sql rlm_sql - FreeRADIUS SQLite Module --
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-- --
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-- Database schema for SQLite rlm_sql module for DHCP --
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-- --
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-----------------------------------------------------------------------------
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--
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-- Table structure for table 'dhcpgroupreply'
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--
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CREATE TABLE dhcpgroupreply (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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groupname varchar(64) NOT NULL default ''',
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attribute varchar(64) NOT NULL default ''',
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op char(2) NOT NULL DEFAULT '=',
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value varchar(253) NOT NULL default ''',
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context varchar(16) NOT NULL default '''
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);
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CREATE INDEX dhcpgroupreply_groupname ON dhcpgroupreply(context,groupname);
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--
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-- Table structure for table 'dhcpreply'
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--
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CREATE TABLE dhcpreply (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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identifier varchar(253) NOT NULL default ''',
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attribute varchar(64) NOT NULL default ''',
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op char(2) NOT NULL DEFAULT '=',
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value varchar(253) NOT NULL default ''',
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context varchar(16) NOT NULL default '''
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);
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CREATE INDEX dhcpreply_identifier ON dhcpreply(context,identifier);
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--
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-- Table structure for table 'dhcpgroup'
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--
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CREATE TABLE dhcpgroup (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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identifier varchar(253) NOT NULL default ''',
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groupname varchar(64) NOT NULL default ''',
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priority int(11) NOT NULL default '1',
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context varchar(16) NOT NULL default '''
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);
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CREATE INDEX dhcpgroup_identifier ON dhcpgroup(context,identifier);
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--
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-- Table structure for table 'dhcpippool'
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--
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CREATE TABLE dhcpstatus (
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status_id int PRIMARY KEY,
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status varchar(10) NOT NULL
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);
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INSERT INTO dhcpstatus (status_id, status) VALUES (1, 'dynamic'), (2, 'static'), (3, 'declined'), (4, 'disabled');
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CREATE TABLE dhcpippool (
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id int(11) PRIMARY KEY,
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pool_name varchar(30) NOT NULL,
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framedipaddress varchar(15) NOT NULL,
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pool_key varchar(30) NOT NULL default ''',
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gateway varchar(15) NOT NULL default ''',
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expiry_time DATETIME NOT NULL default (DATETIME('now')),
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status_id int NOT NULL default 1,
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counter int NOT NULL default 0,
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FOREIGN KEY(status_id) REFERENCES dhcpstatus(status_id)
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);
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CREATE INDEX dhcpippool_poolname_expire ON dhcpippool(pool_name, expiry_time);
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CREATE INDEX dhcpippool_framedipaddress ON dhcpippool(framedipaddress);
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CREATE INDEX dhcpippool_poolname_poolkey_ipaddress ON dhcpippool(pool_name, pool_key, framedipaddress);
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${builtins.concatStringsSep "\n" (map mkVlan vlans)}
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''
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83
machines/vault01/k-radius/mod-dhcp_sql.nix
Normal file
83
machines/vault01/k-radius/mod-dhcp_sql.nix
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@ -0,0 +1,83 @@
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{ pkgs, ... }@args:
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pkgs.writeText "mod-dhcp_sql" ''
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sql dhcp_sql {
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dialect = "sqlite"
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driver = "rlm_sql_''${dialect}"
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sqlite {
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filename = "/tmp/freeradius.db"
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busy_timeout = 200
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bootstrap = "${import ./dhcp-sqlsquema.nix args}"
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}
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radius_db = "radius"
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read_groups = no
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pool {
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start = ''${thread[pool].start_servers}
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min = ''${thread[pool].min_spare_servers}
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max = ''${thread[pool].max_servers}
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spare = ''${thread[pool].max_spare_servers}
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uses = 0
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retry_delay = 30
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lifetime = 0
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idle_timeout = 60
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}
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group_attribute = "''${.:instance}-SQL-Group"
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# -*- text -*-
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#
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# dhcp/sqlite/queries.conf -- SQLite configuration for DHCP schema (schema.sql)
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#
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# $Id: 0cc720220d237d98934dd23173ccb4e09bd0cb01 $
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# Safe characters list for sql queries. Everything else is replaced
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# with their mime-encoded equivalents.
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# The default list should be ok
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# safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /"
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#######################################################################
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# Query config: Identifier
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#######################################################################
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# This is the identifier that will get substituted, escaped, and added
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# as attribute 'SQL-User-Name'. '%{SQL-User-Name}' should be used
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# below everywhere an identifier substitution is needed so you you can
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# be sure the identifier passed from the client is escaped properly.
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#
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sql_user_name = "%{control:DHCP-SQL-Option-Identifier}"
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#######################################################################
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# Attribute Lookup Queries
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#######################################################################
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# These queries setup the reply items in ''${dhcpreply_table} and
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# ''${group_reply_query}. You can use any query/tables you want, but
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# the return data for each row MUST be in the following order:
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#
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# 0. Row ID (currently unused)
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# 1. Identifier
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# 2. Item Attr Name
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# 3. Item Attr Value
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# 4. Item Attr Operation
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#######################################################################
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authorize_reply_query = "\
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SELECT id, identifier, attribute, value, op \
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FROM dhcpreply \
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WHERE identifier = '%{SQL-User-Name}' AND context = '%{control:DHCP-SQL-Option-Context}' \
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ORDER BY id"
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authorize_group_reply_query = "\
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SELECT id, groupname, attribute, value, op \
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FROM dhcpgroupreply \
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WHERE groupname = '%{''${group_attribute}}' AND context = '%{control:DHCP-SQL-Option-Context}' \
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ORDER BY id"
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group_membership_query = "\
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SELECT groupname \
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FROM dhcpgroup \
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WHERE identifier='%{SQL-User-Name}' AND context = '%{control:DHCP-SQL-Option-Context}' \
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ORDER BY priority"
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}
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''
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329
machines/vault01/k-radius/mod-dhcp_sqlippool
Normal file
329
machines/vault01/k-radius/mod-dhcp_sqlippool
Normal file
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# Configuration for DHCP for the SQL based IP Pools module (rlm_sqlippool).
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#
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# See raddb/mods-available/sqlippool for common configuration explanation
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#
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# See raddb/policy.d/dhcp_sqlippool for the "glue" code that allows
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# the RADIUS based "sqlippool" module to be used for DHCP.
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#
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# See raddb/sites-available/dhcp for instructions on how to configure
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# the DHCP server.
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#
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# The database schemas are available at:
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#
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# raddb/mods-config/sql/ippool-dhcp/<DB>/schema.sql
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#
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# $Id: 909b93c7ebcbbeb16b123ca38e696790b5771dda $
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sqlippool dhcp_sqlippool {
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# SQL instance to use (from mods-available/sql)
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#
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# If you have multiple sql instances, such as "sql sql1 {...}",
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# use the *instance* name here: sql1.
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sql_module_instance = "dhcp_sql"
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# This is duplicative of info available in the SQL module, but
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# we have to list it here as we do not yet support nested
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# reference expansions.
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dialect = "mysql"
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# The duration for which a lease is reserved whilst under offer
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offer_duration = 10
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# IP lease duration. (Leases expire even if no DHCP-Release packet is received)
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# Either use the value to be sent to the client or a hard coded one.
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#lease_duration = "%{reply:DHCP-IP-Address-Lease-Time}"
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lease_duration = 7200
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# The attribute in which the IP address is returned in the reply
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attribute_name = "DHCP-Your-IP-Address"
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# Assign the IP address, even if the above attribute already exists in
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# the reply.
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#
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# allow_duplicates = no
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# The attribute in which an IP address hint may be supplied
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req_attribute_name = "DHCP-Requested-IP-Address"
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#
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# RFC 2132 allows the DHCP client to supply a unique
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# identifier ("uid") using Option 61 (DHCP-Client-Identifier)
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# in which case it must be used as the lookup key for
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# configuration data.
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#
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pool_key = "%{%{DHCP-Client-Identifier}:-%{DHCP-Client-Hardware-Address}}"
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#
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# The "uid" is generated by the OS which means that clients
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# whose BMC piggybacks on the main interface (sharing its MAC,
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# but generating a distinct uid) and dual-booting clients can
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# be allocated multiple IPs, consuming more pool entries. To
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# avoid this you can ignore the RFCs and key the configuration
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# data based only on the client MAC address.
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#
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# pool_key = "%{DHCP-Client-Hardware-Address}"
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################################################################
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#
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# WARNING: MySQL (MyISAM) has certain limitations that means it can
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# hand out the same IP address to 2 different users.
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#
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# We suggest using an SQL DB with proper transaction
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# support, such as PostgreSQL, or using MySQL
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# with InnoDB.
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#
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################################################################
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# These messages are added to the "control" items, as
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# Module-Success-Message. They are not logged anywhere else,
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# unlike previous versions. If you want to have them logged
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# to a file, see the "linelog" module, and create an entry
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# which writes Module-Success-Message message.
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#
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messages {
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exists = "DHCP: Existing IP: %{reply:${..attribute_name}} (cid %{DHCP-Client-Identifier} chaddr %{DHCP-Client-Hardware-Address} giaddr %{DHCP-Gateway-IP-Address})"
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success = "DHCP: Allocated IP: %{reply:${..attribute_name}} from %{control:Pool-Name} (cid %{DHCP-Client-Identifier} chaddr %{DHCP-Client-Hardware-Address} giaddr %{DHCP-Gateway-IP-Address})"
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clear = "DHCP: Released IP %{DHCP-Client-IP-Address} (cid %{DHCP-Client-Identifier} chaddr %{DHCP-Client-Hardware-Address} giaddr %{DHCP-Gateway-IP-Address})"
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failed = "DHCP: IP Allocation FAILED from %{control:Pool-Name} (cid %{DHCP-Client-Identifier} chaddr %{DHCP-Client-Hardware-Address} giaddr %{DHCP-Gateway-IP-Address})"
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nopool = "DHCP: No Pool-Name defined (cid %{DHCP-Client-Identifier} chaddr %{DHCP-Client-Hardware-Address} giaddr %{DHCP-Gateway-IP-Address})"
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}
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# -*- text -*-
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#
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# ippool-dhcp/sqlite/queries.conf -- SQLite queries for rlm_sqlippool
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#
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# $Id: d99e09bfc8559eaf5584c32fb6a94c99e689fee3 $
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# *****************
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# * DHCP DISCOVER *
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# *****************
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#
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# SQLite does not implement SELECT FOR UPDATE which is normally used to place
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# an exclusive lock over rows to prevent the same address from being
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# concurrently selected for allocation to multiple users.
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#
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# The most granular read-blocking lock that SQLite has is an exclusive lock
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# over the database, so that's what we use. All locking in SQLite is performed
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# over the entire database and we perform a row update for any IP that we
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# allocate, requiring an exclusive lock. Taking the exclusive lock from the
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# start of the transaction (even if it were not required to guard the SELECT)
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# is actually quicker than if we deferred it causing SQLite to "upgrade" the
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# automatic shared lock for the transaction to an exclusive lock for the
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# subsequent UPDATE.
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#
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allocate_begin = "BEGIN EXCLUSIVE"
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allocate_commit = "COMMIT"
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#
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# Attempt to find the most recent existing IP address for the client
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#
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allocate_existing = "\
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SELECT framedipaddress \
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FROM dhcpippool \
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JOIN dhcpstatus \
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ON dhcpippool.status_id = dhcpstatus.status_id \
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WHERE pool_name = '%{control:Pool-Name}' \
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AND pool_key = '${pool_key}' \
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AND status IN ('dynamic', 'static') \
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ORDER BY expiry_time DESC \
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LIMIT 1"
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#
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# Determine whether the requested IP address is available
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#
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allocate_requested = "\
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SELECT framedipaddress \
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FROM dhcpippool \
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JOIN dhcpstatus \
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ON dhcpippool.status_id = dhcpstatus.status_id \
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WHERE pool_name = '%{control:Pool-Name}' \
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AND framedipaddress = '%{%{${req_attribute_name}}:-0.0.0.0}' \
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AND status = 'dynamic' \
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AND expiry_time < datetime('now')"
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#
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# If the existing address can't be found this query will be run to
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# find a free address
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#
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#allocate_find = "\
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# SELECT framedipaddress \
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# FROM dhcpippool \
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# JOIN dhcpstatus \
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# ON dhcpippool.status_id = dhcpstatus.status_id \
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# WHERE pool_name = '%{control:Pool-Name}' \
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# AND expiry_time < datetime('now') \
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# AND status = 'dynamic' \
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# ORDER BY expiry_time LIMIT 1"
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#
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# This series of queries allocates an IP address
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#
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# Either pull the most recent allocated IP for this client or the
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# oldest expired one. The first sub query returns the most recent
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# lease for the client (if there is one), the second returns the
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# oldest expired one.
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# Sorting the result by expiry_time DESC will return the client specific
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# IP if it exists, otherwise an expired one.
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#
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allocate_find = "\
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SELECT framedipaddress, 1 AS o \
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FROM ( \
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SELECT framedipaddress \
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FROM dhcpippool \
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JOIN dhcpstatus \
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ON dhcpippool.status_id = dhcpstatus.status_id \
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WHERE pool_name = '%{control:Pool-Name}' \
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AND pool_key = '${pool_key}' \
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AND status IN ('dynamic', 'static') \
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ORDER BY expiry_time DESC \
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LIMIT 1 \
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) UNION \
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SELECT framedipaddress, 2 AS o \
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FROM ( \
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SELECT framedipaddress \
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FROM dhcpippool \
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JOIN dhcpstatus \
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ON dhcpippool.status_id = dhcpstatus.status_id \
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WHERE pool_name = '%{control:Pool-Name}' \
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AND framedipaddress = '%{%{${req_attribute_name}}:-0.0.0.0}' \
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AND status = 'dynamic' \
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AND ( pool_key = '${pool_key}' OR expiry_time < datetime('now') ) \
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) UNION \
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SELECT framedipaddress, 3 AS o \
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FROM ( \
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SELECT framedipaddress \
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FROM dhcpippool \
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JOIN dhcpstatus \
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ON dhcpippool.status_id = dhcpstatus.status_id \
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WHERE pool_name = '%{control:Pool-Name}' \
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AND expiry_time < datetime('now') \
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AND status = 'dynamic' \
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ORDER BY expiry_time LIMIT 1 \
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) \
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ORDER BY o \
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LIMIT 1"
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#
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# If you prefer to allocate a random IP address every time, i
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# use this query instead
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# Note: This is very slow if you have a lot of free IPs.
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#
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#allocate_find = "\
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# SELECT framedipaddress \
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# FROM dhcpippool \
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# JOIN dhcpstatus \
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# ON dhcpippool.status_id = dhcpstatus.status_id \
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# WHERE pool_name = '%{control:Pool-Name}' \
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# AND expiry_time < datetime('now') \
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# AND status = 'dynamic' \
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# ORDER BY RAND() \
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#
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# If an IP could not be allocated, check to see if the pool exists or not
|
||||
# This allows the module to differentiate between a full pool and no pool
|
||||
# Note: If you are not running redundant pool modules this query may be
|
||||
# commented out to save running this query every time an ip is not allocated.
|
||||
#
|
||||
pool_check = "\
|
||||
SELECT id \
|
||||
FROM dhcpippool \
|
||||
WHERE pool_name='%{control:Pool-Name}' \
|
||||
LIMIT 1"
|
||||
|
||||
#
|
||||
# This is the final IP Allocation query, which saves the allocated ip details
|
||||
#
|
||||
allocate_update = "\
|
||||
UPDATE dhcpippool \
|
||||
SET \
|
||||
gateway = '%{DHCP-Gateway-IP-Address}', \
|
||||
pool_key = '${pool_key}', \
|
||||
expiry_time = datetime(strftime('%%s', 'now') + ${offer_duration}, 'unixepoch') \
|
||||
WHERE framedipaddress = '%I'"
|
||||
|
||||
|
||||
# ****************
|
||||
# * DHCP REQUEST *
|
||||
# ****************
|
||||
|
||||
#
|
||||
# This query revokes any active offers for addresses that a client is not
|
||||
# requesting when a DHCP REQUEST packet arrives
|
||||
#
|
||||
start_update = "\
|
||||
UPDATE dhcpippool \
|
||||
SET \
|
||||
gateway = ''', \
|
||||
pool_key = ''', \
|
||||
expiry_time = datetime('now') \
|
||||
WHERE pool_name = '%{control:Pool-Name}' \
|
||||
AND pool_key = '${pool_key}' \
|
||||
AND framedipaddress <> '%{DHCP-Requested-IP-Address}' \
|
||||
AND expiry_time > datetime('now') \
|
||||
AND dhcpippool.status_id IN \
|
||||
(SELECT status_id FROM dhcpstatus WHERE status = 'dynamic')"
|
||||
|
||||
#
|
||||
# This query extends an existing lease (or offer) when a DHCP REQUEST packet
|
||||
# arrives. This query must update a row when a lease is succesfully requested
|
||||
# - queries that update no rows will result in a "notfound" response to
|
||||
# the module which by default will give a DHCP-NAK reply. In this example
|
||||
# incrementing "counter" is used to achieve this.
|
||||
#
|
||||
alive_update = "\
|
||||
UPDATE dhcpippool \
|
||||
SET \
|
||||
expiry_time = datetime(strftime('%%s', 'now') + ${lease_duration}, 'unixepoch'), \
|
||||
counter = counter + 1 \
|
||||
WHERE pool_name = '%{control:Pool-Name}' \
|
||||
AND pool_key = '${pool_key}' \
|
||||
AND framedipaddress = '%{%{DHCP-Requested-IP-Address}:-%{DHCP-Client-IP-Address}}'"
|
||||
|
||||
|
||||
# ****************
|
||||
# * DHCP RELEASE *
|
||||
# ****************
|
||||
|
||||
#
|
||||
# This query frees an IP address when a DHCP RELEASE packet arrives
|
||||
#
|
||||
stop_clear = "\
|
||||
UPDATE dhcpippool \
|
||||
SET \
|
||||
gateway = ''', \
|
||||
pool_key = ''', \
|
||||
expiry_time = datetime('now') \
|
||||
WHERE pool_name = '%{control:Pool-Name}' \
|
||||
AND pool_key = '${pool_key}' \
|
||||
AND framedipaddress = '%{DHCP-Client-IP-Address}' \
|
||||
AND dhcpippool.status_id IN \
|
||||
(SELECT status_id FROM dhcpstatus WHERE status = 'dynamic')"
|
||||
|
||||
|
||||
#
|
||||
# This query is not applicable to DHCP
|
||||
#
|
||||
on_clear = ""
|
||||
|
||||
|
||||
# ****************
|
||||
# * DHCP DECLINE *
|
||||
# ****************
|
||||
|
||||
#
|
||||
# This query marks an IP address as declined when a DHCP Decline
|
||||
# packet arrives
|
||||
#
|
||||
off_clear = "\
|
||||
UPDATE dhcpippool \
|
||||
SET status_id = (SELECT status_id FROM dhcpstatus WHERE status = 'declined') \
|
||||
WHERE pool_name = '%{control:Pool-Name}' \
|
||||
AND pool_key = '${pool_key}' \
|
||||
AND framedipaddress = '%{DHCP-Requested-IP-Address}'"
|
||||
}
|
||||
|
|
@ -1,28 +1,38 @@
|
|||
{ pkgs, vlans }:
|
||||
let
|
||||
listen = vlan: ''
|
||||
listen {
|
||||
type = dhcp
|
||||
ipaddr = 10.0.0.1
|
||||
src_ipaddr = 10.0.0.1
|
||||
port = 67
|
||||
interface = vlan-user-${vlan}
|
||||
broadcast = no #?
|
||||
performance {
|
||||
skip_duplicate_checks = no
|
||||
listen =
|
||||
{
|
||||
vlan,
|
||||
servIP,
|
||||
broadIP,
|
||||
interfaceName,
|
||||
...
|
||||
}:
|
||||
''
|
||||
listen {
|
||||
type = dhcp
|
||||
ipaddr = ${servIP}
|
||||
src_ipaddr = ${servIP}
|
||||
port = 67
|
||||
interface = ${interfaceName}
|
||||
broadcast = no #?
|
||||
performance {
|
||||
skip_duplicate_checks = no
|
||||
}
|
||||
# we store servIP so that latter modules can know with wich IP reply
|
||||
update control {
|
||||
&Client-Vlan = ${toString vlan}
|
||||
&Server-IP = ${servIP}
|
||||
&Broadcast-IP = ${broadIP}
|
||||
}
|
||||
}
|
||||
# we store servIP so that latter modules can know with wich IP reply
|
||||
update control {
|
||||
&Client-Vlan = ${vlan}
|
||||
}
|
||||
}
|
||||
'';
|
||||
'';
|
||||
dhcpCommon = ''
|
||||
update reply {
|
||||
&DHCP-Domain-Name-Server = 10.0.0.1
|
||||
&DHCP-Subnet-Mask = 255.255.128.0 # /17 ?????????
|
||||
&DHCP-Subnet-Mask = 255.255.255.224
|
||||
&DHCP-Router-Address = &control:Server-IP
|
||||
&DHCP-Broadcast-Address = 10.0.127.255 # ???????
|
||||
&DHCP-IP-Address-Lease-Time = 7200
|
||||
&DHCP-Broadcast-Address = &control:Broadcast-IP
|
||||
&DHCP-DHCP-Server-Identifier = 10.0.0.1
|
||||
}
|
||||
'';
|
||||
|
|
@ -57,10 +67,10 @@ let
|
|||
}
|
||||
'';
|
||||
in
|
||||
''
|
||||
pkgs.writeText "site-dhcp" ''
|
||||
server dhcp {
|
||||
|
||||
${builtins.concatStringsSep "\n\n" (map listen [ ])}
|
||||
${builtins.concatStringsSep "\n\n" (map listen vlans)}
|
||||
|
||||
${dhcpDiscover}
|
||||
|
||||
|
|
|
|||
|
|
@ -11,4 +11,4 @@ let
|
|||
interfaceName = "vlan-user-${toString vlan}";
|
||||
};
|
||||
in
|
||||
builtins.genList mkUserVlan 850
|
||||
builtins.genList mkUserVlan 300 # 850
|
||||
|
|
|
|||
Loading…
Reference in a new issue