---
- include_role:
    name: 'service'
  vars:
    service_name: 'nscd'
    service_packages: 'nscd'

- name: 'set debconf values'
  debconf:
    name: 'slapd'
    question: '{{ item.question }}'
    vtype: 'string'
    value: '{{ item.value }}'
  register: debconfs
  loop:
    - { question: 'slapd/domain', value: '{{ ldap_domain }}' }
    - { question: 'slapd/dump_database', value: 'when needed' }
    - { question: 'shared/organization', value: '{{ ldap_organization }}' }

- include_role:
    name: 'service'
  vars:
    service_name: 'slapd'
    service_packages:
        - 'slapd'
        - 'ldap-utils'
        - 'libpam-ldap'
        - 'python3-ldap'
        - 'sudo'

- name: 'delete old backups'
  file:
    path: '{{ item }}'
    state: 'absent'
  with_fileglob: '/var/backups/*.ldapdb'
  when: debconfs.results[0].changed

- name: 'backup old database and re-create'
  command: 'dpkg-reconfigure -p critical slapd'
  when: debconfs.results[0].changed

- name: 'start slapd service'
  service:
      name: 'slapd'
      enabled: true
      state: 'started'

- name: 'copy schemas'
  copy:
    src: '{{ item }}'
    dest: '/etc/ldap/schema/'
  loop:
    - 'ldapns.ldif'
    - 'kerberos.ldif'
    - 'phamm.ldif'
    - 'phamm-vacation.ldif'

- name: 'activate schemas'
  command:
    cmd: 'ldapadd -Y EXTERNAL -H ldapi:/// -f /etc/ldap/schema/{{ item }}'
    creates: '/etc/ldap/slapd.d/cn=config/cn=schema/cn={*}{{ item }}'
  loop:
    - 'ldapns.ldif'
    - 'kerberos.ldif'
    - 'phamm.ldif'
    - 'phamm-vacation.ldif'

- name: 'activate modules'
  ldap_attr:
    dn: 'cn=module{0},cn=config'
    name: 'olcModuleLoad'
    values:
      - '{0}back_mdb'
      - '{1}pw-sha2'
      - '{2}auditlog'
      - '{3}memberof'

- name: 'create log dir'
  file:
    path: '/var/log/openldap'
    owner: 'openldap'
    group: 'openldap'
    state: 'directory'

- name: 'set loglevel'
  ldap_attr:
    dn: 'cn=config'
    name: 'olcLogLevel'
    values: 'conns acl'

- name: 'activate auditlog overlay'
  ldap_entry:
    dn: 'olcOverlay={0}auditlog,olcDatabase={{ item.db }},cn=config'
    objectClass:
      - 'olcOverlayConfig'
      - 'olcAuditLogConfig'
    attributes:
      olcAuditlogFile: '/var/log/openldap/{{ item.logfile }}'
  loop:
    - { db: '{0}config', logfile: 'audit_config.ldif' }
    - { db: '{1}mdb', logfile: 'audit_mdb.ldif' }

- name: 'activate memberof overlay'
  ldap_entry:
    dn: 'olcOverlay={1}memberof,olcDatabase={1}mdb,cn=config'
    objectClass:
      - 'olcOverlayConfig'
      - 'olcMemberOf'

- name: 'set default password hash'
  ldap_attr:
    dn: 'olcDatabase={-1}frontend,cn=config'
    name: 'olcPasswordHash'
    values: '{SSHA512}'

- name: 'evaluating base_dn'
  set_fact:
    base_dn: 'dc={{ ldap_domain.replace(".", ",dc=") }}'

- name: 'configure TLS x509 <-> ldap dn translation'
  ldap_attr:
    dn: 'cn=config'
    name: 'olcAuthzRegexp'
    state: 'exact'
    values:
      - >-
       {0} ^cn=([^,]+),ou=Server,{{ x509_ldap_suffix }}$
       cn=$1,ou=Server,{{ base_dn }}
      - >-
       {1} ^mail=[^,]+,cn=([^,]+),ou=People,{{ x509_ldap_suffix }}$
       cn=$1,ou=People,{{ base_dn }}

- name: 'configure main tree acls'
  ldap_attr:
    dn: 'olcDatabase={1}mdb,cn=config'
    name: 'olcAccess'
    state: 'exact'
    values:
      # [0] -> Admins can proxy-auth to RootDN
      # /proxy-auth is not required for routine user-management operations
      - >-
        {0} to dn.exact=cn=admin,{{ base_dn }} attrs=authzFrom
        by group.exact=cn=admin,ou=Group,{{ base_dn }} auth
        by * none
      # [1] :: ou=People
      # [1.0] -> Admins can edit People `userPassword`
      #       -> People can edit their `userPassword`
      #       -> Anyone can auth with `userPassword` if using strong TLS.
      - >-
        {1} to dn.one=ou=People,{{ base_dn }} attrs=userPassword
        by group.exact=cn=admin,ou=Group,{{ base_dn }} write
        by self write
        by anonymous {{ 'tls_ssf=256 ' if ldap_tls_enabled }}auth
        by * none
      # [1.1] -> Admins can list the full People tree
      #       -> Servers can perform search on People tree
      - >-
        {2} to dn.exact=ou=People,{{ base_dn }} attrs=entry
        by group.exact=cn=admin,ou=Group,{{ base_dn }} read
        by dn.children=ou=Server,{{ base_dn }} search
        by * none
      # [1.2] -> Admins can add/remove People entries
      - >-
        {3} to dn.exact=ou=People,{{ base_dn }} attrs=children
        by group.exact=cn=admin,ou=Group,{{ base_dn }} write
        by * none
      # [1.3] -> Admins can edit all People attributes
      #       -> Servers can read all People attributes (except userPassword)
      #       -> People can read all their attributes
      #       -> Break: over privileges may be accorded later (i.e.: servers)
      - >-
        {4} to dn.one=ou=People,{{ base_dn }}
        by group.exact=cn=admin,ou=Group,{{ base_dn }} write
        by dn.children=ou=Server,{{ base_dn }} read
        by self read
        by * break
      # [1.5] -> No other access to People tree
      - >-
        {5} to dn.subtree=ou=People,{{ base_dn }}
        by * none
      # [2] :: ou=Group
      # [2.1] -> Admins can add/remove members from groups
      - >-
        {6} to dn.one=ou=Group,{{ base_dn }} attrs=member
        by group.exact=cn=admin,ou=Group,{{ base_dn }} write
        by * none
      # [2.2] -> No other access to Group tree
      - >-
        {7} to dn.children=ou=Group,{{ base_dn }}
        by * none
      # [3] :: ou=Server
      # [3.0] -> Local servers can simple-bind their entries if using TLS
      # /Server using TLS-client Auth with OU=Server are automatically authenticated
      ## TODO: Add peername.ip filtering on server subnet
      - >-
        {8} to dn.children=ou=Server,{{ base_dn }} attrs=userPassword
        by {{ 'tls_ssf=256 ' if ldap_tls_enabled }}auth
        by group.exact=cn=admin,ou=Group,{{ base_dn }} write
        by * none
      # [3.1] -> No other access to Server tree
      - >-
        {9} to dn.subtree=ou=Server,{{ base_dn }}
        by * none
      # [4] :: ou=VirtualDomains - WiP
      # [4.0] -> Admins can write whole subtree
      # [4.1] -> Servers can read whole subtree
#      - >-
#        to dn.subtree=ou=VirtualDomains,{{ base_dn }}
#         by group.exact=cn=admin,ou=Group,{{ base_dn }} write
#         by dn.children=ou=Server,{{ base_dn }} read
      # [5] :: ou=Kerberos - Wi

...