From 0261e875679f1bf63c8d689da7fc7e014597885d Mon Sep 17 00:00:00 2001
From: Stonewall Jackson <stonewall@sacredheartsc.com>
Date: Sat, 4 Feb 2023 01:23:43 -0500
Subject: initial commit

---
 roles/freeradius/defaults/main.yml                 |   3 +
 .../systemd/system/radiusd.service.d/override.conf |   6 ++
 roles/freeradius/handlers/main.yml                 |   4 +
 roles/freeradius/tasks/freeipa.yml                 |  50 +++++++++
 roles/freeradius/tasks/main.yml                    |  74 ++++++++++++++
 .../freeradius/templates/etc/raddb/clients.conf.j2 |   6 ++
 .../templates/etc/raddb/mods-available/eap.j2      |  54 ++++++++++
 .../templates/etc/raddb/mods-available/ldap.j2     | 113 +++++++++++++++++++++
 .../freeradius/templates/etc/raddb/radiusd.conf.j2 |  73 +++++++++++++
 .../etc/raddb/sites-available/inner-tunnel.j2      |  90 ++++++++++++++++
 roles/freeradius/vars/main.yml                     |  12 +++
 11 files changed, 485 insertions(+)
 create mode 100644 roles/freeradius/defaults/main.yml
 create mode 100644 roles/freeradius/files/etc/systemd/system/radiusd.service.d/override.conf
 create mode 100644 roles/freeradius/handlers/main.yml
 create mode 100644 roles/freeradius/tasks/freeipa.yml
 create mode 100644 roles/freeradius/tasks/main.yml
 create mode 100644 roles/freeradius/templates/etc/raddb/clients.conf.j2
 create mode 100644 roles/freeradius/templates/etc/raddb/mods-available/eap.j2
 create mode 100644 roles/freeradius/templates/etc/raddb/mods-available/ldap.j2
 create mode 100644 roles/freeradius/templates/etc/raddb/radiusd.conf.j2
 create mode 100644 roles/freeradius/templates/etc/raddb/sites-available/inner-tunnel.j2
 create mode 100644 roles/freeradius/vars/main.yml

(limited to 'roles/freeradius')

diff --git a/roles/freeradius/defaults/main.yml b/roles/freeradius/defaults/main.yml
new file mode 100644
index 0000000..416d15f
--- /dev/null
+++ b/roles/freeradius/defaults/main.yml
@@ -0,0 +1,3 @@
+freeradius_clients: []
+freeradius_ldap_servers: '{{ freeipa_hosts }}'
+freeradius_access_group: role-wifi-access
diff --git a/roles/freeradius/files/etc/systemd/system/radiusd.service.d/override.conf b/roles/freeradius/files/etc/systemd/system/radiusd.service.d/override.conf
new file mode 100644
index 0000000..d1edca8
--- /dev/null
+++ b/roles/freeradius/files/etc/systemd/system/radiusd.service.d/override.conf
@@ -0,0 +1,6 @@
+[Unit]
+After=syslog.target network-online.target ipa.service dirsrv.target krb5kdc.service mysql.service mariadb.service postgresql.service gssproxy.service
+Wants=gssproxy.service
+
+[Service]
+Environment=GSS_USE_PROXY=yes
diff --git a/roles/freeradius/handlers/main.yml b/roles/freeradius/handlers/main.yml
new file mode 100644
index 0000000..9c89432
--- /dev/null
+++ b/roles/freeradius/handlers/main.yml
@@ -0,0 +1,4 @@
+- name: restart radiusd
+  systemd:
+    name: radiusd
+    state: restarted
diff --git a/roles/freeradius/tasks/freeipa.yml b/roles/freeradius/tasks/freeipa.yml
new file mode 100644
index 0000000..945e2a8
--- /dev/null
+++ b/roles/freeradius/tasks/freeipa.yml
@@ -0,0 +1,50 @@
+- name: create access group
+  ipagroup:
+    ipaadmin_principal: '{{ ipa_user }}'
+    ipaadmin_password: '{{ ipa_pass }}'
+    name: '{{ freeradius_access_group }}'
+    description: wifi access
+    nonposix: yes
+    state: present
+  run_once: True
+
+- name: create service principal
+  ipaservice:
+    ipaadmin_principal: '{{ ipa_user }}'
+    ipaadmin_password: '{{ ipa_pass }}'
+    name: 'radius/{{ ansible_fqdn }}'
+    state: present
+
+- name: retrieve service keytab
+  include_role:
+    name: freeipa_keytab
+  vars:
+    keytab_principal: 'radius/{{ ansible_fqdn }}'
+    keytab_path: '{{ freeradius_keytab }}'
+
+- name: configure gssproxy for kerberized LDAP
+  include_role:
+    name: gssproxy_client
+  vars:
+    gssproxy_name: freeradius
+    gssproxy_section: service/freeradius
+    gssproxy_client_keytab: '{{ freeradius_keytab }}'
+    gssproxy_cred_usage: initiate
+    gssproxy_euid: radiusd
+
+- name: create systemd override directory
+  file:
+    path: /etc/systemd/system/radiusd.service.d
+    state: directory
+
+- name: create systemd override file
+  copy:
+    src: etc/systemd/system/radiusd.service.d/override.conf
+    dest: /etc/systemd/system/radiusd.service.d/override.conf
+  register: freeradius_systemd_unit
+  notify: restart radiusd
+
+- name: reload systemd units
+  systemd:
+    daemon_reload: yes
+  when: freeradius_systemd_unit.changed
diff --git a/roles/freeradius/tasks/main.yml b/roles/freeradius/tasks/main.yml
new file mode 100644
index 0000000..a2c926d
--- /dev/null
+++ b/roles/freeradius/tasks/main.yml
@@ -0,0 +1,74 @@
+- name: install freeradius
+  dnf:
+    name: '{{ freeradius_packages }}'
+    state: present
+
+- import_tasks: freeipa.yml
+
+- name: request TLS certificate
+  include_role:
+    name: getcert_request
+  vars:
+    certificate_service: radius
+    certificate_path: '{{ freeradius_certificate_path }}'
+    certificate_key_path: '{{ freeradius_certificate_key_path }}'
+    certificate_ca_path: '{{ freeradius_certificate_ca_path }}'
+    certificate_owner: radiusd
+    certificate_hook: systemctl restart radiusd
+
+- name: generate dhparams
+  openssl_dhparam:
+    path: '{{ freeradius_dhparams_path }}'
+    size: 2048
+
+- name: enable ldap module
+  file:
+    src: /etc/raddb/mods-available/ldap
+    dest: /etc/raddb/mods-enabled/ldap
+    state: link
+
+- name: generate freeradius configuration
+  template:
+    src: etc/raddb/{{ item }}.j2
+    dest: /etc/raddb/{{ item }}
+    owner: root
+    group: radiusd
+    mode: 0640
+  loop:
+    - radiusd.conf
+    - clients.conf
+    - mods-available/eap
+    - mods-available/ldap
+    - sites-available/inner-tunnel
+  notify: restart radiusd
+
+- name: create tlscache directory
+  file:
+    path: '{{ freeradius_tlscache_dir }}'
+    state: directory
+    owner: radiusd
+    group: radiusd
+    mode: 0700
+
+- name: set up clean-freeradius-tlscache timer
+  include_role:
+    name: systemd_timer
+  vars:
+    timer_name: clean-freeradius-tlscache
+    timer_description: Delete old freeradius tlscache files
+    timer_on_calendar: daily
+    timer_exec: find {{ freeradius_tlscache_dir }} -mtime +2 -exec rm -vf {} ;
+
+- name: start freeradius
+  systemd:
+    name: radiusd
+    enabled: yes
+    state: started
+
+- name: open firewall ports
+  firewalld:
+    service: radius
+    permanent: yes
+    immediate: yes
+    state: enabled
+  tags: firewalld
diff --git a/roles/freeradius/templates/etc/raddb/clients.conf.j2 b/roles/freeradius/templates/etc/raddb/clients.conf.j2
new file mode 100644
index 0000000..f6396e0
--- /dev/null
+++ b/roles/freeradius/templates/etc/raddb/clients.conf.j2
@@ -0,0 +1,6 @@
+{% for client in freeradius_clients %}
+client {{ client.name }} {
+  ipaddr = {{ client.address }}
+  secret = {{ client.secret }}
+}
+{% endfor %}
diff --git a/roles/freeradius/templates/etc/raddb/mods-available/eap.j2 b/roles/freeradius/templates/etc/raddb/mods-available/eap.j2
new file mode 100644
index 0000000..5db0d1f
--- /dev/null
+++ b/roles/freeradius/templates/etc/raddb/mods-available/eap.j2
@@ -0,0 +1,54 @@
+eap {
+  default_eap_type = ttls
+  timer_expire = 60
+  ignore_unknown_eap_types = yes
+  cisco_accounting_username_bug = no
+  max_sessions = ${max_requests}
+
+  tls-config tls-common {
+    private_key_password =
+    private_key_file = {{ freeradius_certificate_key_path }}
+    certificate_file = {{ freeradius_certificate_path }}
+    ca_file = {{ freeradius_certificate_ca_path }}
+    auto_chain = no
+    ca_path = ${cadir}
+    cipher_list = "PROFILE=SYSTEM"
+    cipher_server_preference = no
+    tls_min_version = "1.2"
+    tls_max_version = "1.2"
+    ecdh_curve = "prime256v1"
+
+    cache {
+      enable = yes
+      lifetime = 24 # hours
+      name = "EAP module"
+      persist_dir = "${db_dir}/tlscache"
+      store {
+        Tunnel-Private-Group-Id
+      }
+    }
+
+    verify {
+      skip_if_ocsp_ok = yes
+      tmpdir = /var/run/radiusd/tmp
+      client = "/usr/bin/openssl verify -CApath ${..ca_path} %{TLS-Client-Cert-Filename}"
+    }
+
+    ocsp {
+      enable = yes
+      override_cert_url = no
+    }
+  }
+
+  tls {
+    tls = tls-common
+  }
+
+  ttls {
+    tls = tls-common
+    default_eap_type = md5
+    copy_request_to_tunnel = no
+    use_tunneled_reply = no
+    virtual_server = "inner-tunnel"
+  }
+}
diff --git a/roles/freeradius/templates/etc/raddb/mods-available/ldap.j2 b/roles/freeradius/templates/etc/raddb/mods-available/ldap.j2
new file mode 100644
index 0000000..85aede1
--- /dev/null
+++ b/roles/freeradius/templates/etc/raddb/mods-available/ldap.j2
@@ -0,0 +1,113 @@
+ldap {
+{% for server in freeradius_ldap_servers %}
+  server = '{{ server }}'
+{% endfor %}
+
+  base_dn = '{{ freeipa_user_basedn }}'
+
+  sasl {
+    mech = 'GSSAPI'
+    realm = '{{ freeipa_realm }}'
+  }
+
+  update {
+    control:Password-With-Header  += 'userPassword'
+    control:      += 'radiusControlAttribute'
+    request:      += 'radiusRequestAttribute'
+    reply:        += 'radiusReplyAttribute'
+  }
+
+  user_dn = "LDAP-UserDn"
+
+  user {
+    base_dn = "${..base_dn}"
+{% raw %}
+    filter = "(uid=%{%{Stripped-User-Name}:-%{User-Name}})"
+{% endraw %}
+  }
+
+  group {
+    base_dn = '{{ freeipa_group_basedn }}'
+    filter = '(objectClass=ipagroup)'
+    name_attribute = cn
+{% raw %}
+    membership_filter = "(member=%{control:${..user_dn}})"
+{% endraw %}
+    membership_attribute = 'memberOf'
+    cacheable_name = 'yes'
+    cacheable_dn = 'yes'
+    allow_dangling_group_ref = 'yes'
+  }
+
+  profile { }
+
+  client {
+    base_dn = "${..base_dn}"
+    filter = '(objectClass=radiusClient)'
+
+    template { }
+
+    attribute {
+      ipaddr        = 'radiusClientIdentifier'
+      secret        = 'radiusClientSecret'
+    }
+  }
+
+  read_clients = no
+
+  accounting {
+    reference = "%{tolower:type.%{Acct-Status-Type}}"
+
+    type {
+      start {
+        update {
+          description := "Online at %S"
+        }
+      }
+
+      interim-update {
+        update {
+          description := "Last seen at %S"
+        }
+      }
+
+      stop {
+        update {
+          description := "Offline at %S"
+        }
+      }
+    }
+  }
+
+  post-auth {
+    update {
+      description := "Authenticated at %S"
+    }
+  }
+
+  options {
+    chase_referrals = yes
+    rebind = yes
+    res_timeout = 10
+    srv_timelimit = 3
+    net_timeout = 1
+    idle = 60
+    probes = 3
+    interval = 3
+    ldap_debug = 0x0000
+  }
+
+  tls { }
+
+  pool {
+    start = ${thread[pool].start_servers}
+    min = ${thread[pool].min_spare_servers}
+    max = ${thread[pool].max_servers}
+
+    spare = ${thread[pool].max_spare_servers}
+    uses = 0
+    retry_delay = 30
+    lifetime = 0
+    idle_timeout = 60
+  }
+}
diff --git a/roles/freeradius/templates/etc/raddb/radiusd.conf.j2 b/roles/freeradius/templates/etc/raddb/radiusd.conf.j2
new file mode 100644
index 0000000..ad9b58f
--- /dev/null
+++ b/roles/freeradius/templates/etc/raddb/radiusd.conf.j2
@@ -0,0 +1,73 @@
+prefix = /usr
+exec_prefix = /usr
+sysconfdir = /etc
+localstatedir = /var
+sbindir = /usr/sbin
+logdir = ${localstatedir}/log/radius
+raddbdir = ${sysconfdir}/raddb
+radacctdir = ${logdir}/radacct
+
+name = radiusd
+
+confdir = ${raddbdir}
+modconfdir = ${confdir}/mods-config
+certdir = ${confdir}/certs
+cadir   = ${confdir}/certs
+run_dir = ${localstatedir}/run/${name}
+
+db_dir = ${localstatedir}/lib/radiusd
+libdir = /usr/lib64/freeradius
+pidfile = ${run_dir}/${name}.pid
+correct_escapes = true
+max_request_time = 30
+cleanup_delay = 5
+max_requests = 16384
+hostname_lookups = no
+log {
+  destination = stdout
+  colourise = no
+  stripped_names = no
+  auth = yes
+  auth_badpass = no
+  auth_goodpass = no
+  msg_denied = "You are already logged in - access denied"
+}
+
+checkrad = ${sbindir}/checkrad
+
+ENV { }
+
+security {
+  user = radiusd
+  group = radiusd
+  allow_core_dumps = no
+  max_attributes = 200
+  reject_delay = 1
+  status_server = yes
+}
+
+proxy_requests  = yes
+$INCLUDE proxy.conf
+
+$INCLUDE clients.conf
+
+thread pool {
+  start_servers = 5
+  max_servers = 32
+  min_spare_servers = 3
+  max_spare_servers = 10
+  max_requests_per_server = 0
+  auto_limit_acct = no
+}
+
+modules {
+  $INCLUDE mods-enabled/
+}
+
+instantiate { }
+
+policy {
+  $INCLUDE policy.d/
+}
+
+$INCLUDE sites-enabled/
diff --git a/roles/freeradius/templates/etc/raddb/sites-available/inner-tunnel.j2 b/roles/freeradius/templates/etc/raddb/sites-available/inner-tunnel.j2
new file mode 100644
index 0000000..043349a
--- /dev/null
+++ b/roles/freeradius/templates/etc/raddb/sites-available/inner-tunnel.j2
@@ -0,0 +1,90 @@
+server inner-tunnel {
+  listen {
+    ipaddr = 127.0.0.1
+    port = 18120
+    type = auth
+  }
+
+  authorize {
+    filter_username
+    chap
+    suffix
+
+    update control {
+      &Proxy-To-Realm := LOCAL
+    }
+
+    eap {
+      ok = return
+    }
+
+    ldap
+    if (ok || updated) {
+      update {
+        control:Auth-Type := ldap
+      }
+    }
+
+    expiration
+    logintime
+    pap
+  }
+
+  authenticate {
+    Auth-Type PAP {
+      pap
+    }
+
+    Auth-Type CHAP {
+      chap
+    }
+
+    Auth-Type LDAP {
+      ldap
+    }
+
+    eap
+  }
+
+  session {
+    radutmp
+  }
+
+
+  post-auth {
+    -sql
+    update reply {
+      User-Name !* ANY
+      Message-Authenticator !* ANY
+      EAP-Message !* ANY
+      Proxy-State !* ANY
+      MS-MPPE-Encryption-Types !* ANY
+      MS-MPPE-Encryption-Policy !* ANY
+      MS-MPPE-Send-Key !* ANY
+      MS-MPPE-Recv-Key !* ANY
+    }
+
+    update {
+      &outer.session-state: += &reply:
+    }
+
+    Post-Auth-Type REJECT {
+      -sql
+      attr_filter.access_reject
+
+      update outer.session-state {
+        &Module-Failure-Message := &request:Module-Failure-Message
+      }
+    }
+
+    if (LDAP-Group != "{{ freeradius_access_group }}") {
+      reject
+    }
+  }
+
+  pre-proxy { }
+
+  post-proxy {
+    eap
+  }
+}
diff --git a/roles/freeradius/vars/main.yml b/roles/freeradius/vars/main.yml
new file mode 100644
index 0000000..a99a6aa
--- /dev/null
+++ b/roles/freeradius/vars/main.yml
@@ -0,0 +1,12 @@
+freeradius_packages:
+  - freeradius
+  - freeradius-ldap
+  - freeradius-utils
+
+freeradius_certificate_path: /etc/pki/tls/certs/radiusd.pem
+freeradius_certificate_key_path: /etc/pki/tls/private/radiusd.key
+freeradius_certificate_ca_path: /etc/ipa/ca.crt
+freeradius_dhparams_path: /etc/raddb/certs/dh
+freeradius_tlscache_dir: /var/lib/radiusd/tlscache
+
+freeradius_keytab: /var/lib/gssproxy/clients/freeradius.keytab
-- 
cgit