# XXX If #742056 gets fixed, we should preseed slapd to use peercreds as
# RootDN once the fix enters stable.
- name: Install OpenLDAP
  apt: pkg={{ item }}
  with_items:
    - slapd
    - ldap-utils
    - ldapvi
    - db-util
    - python-ldap

- name: Configure slapd
  template: src=etc/default/slapd.j2
            dest=/etc/default/slapd
            owner=root group=root
            mode=0644
  register: r1
  notify:
    - Restart slapd

# Upon install slapd create and populate a database under /var/lib/ldap.
# We clear it up and create a children directory to get finer-grain
# control.
- name: Clear empty /var/lib/ldap
  # Don't remove the database (and fail) if it contains something else
  # than its suffix or cn=admin,...
  openldap: dbdirectory=/var/lib/ldap ignoredn=cn=admin
            state=absent

- name: Create directory /var/lib/ldap/fripost
  file: path=/var/lib/ldap/fripost
        state=directory
        owner=openldap group=openldap
        mode=0700

- name: Copy /var/lib/ldap/fripost/DB_CONFIG
  copy: src=var/lib/ldap/fripost/DB_CONFIG
        dest=/var/lib/ldap/fripost/DB_CONFIG
        owner=openldap group=openldap
        mode=0600
  register: r2
  notify:
    # Not sure if required
    - Restart slapd

- name: Create directory /etc/ldap/ssl
  file: path=/etc/ldap/ssl
        state=directory
        owner=root group=root
        mode=0755
  tags:
    - genkey

- name: Generate a private key and a X.509 certificate for slapd
  # XXX: GnuTLS (libgnutls26 2.12.20-8+deb7u2, found in Wheezy) doesn't
  # support ECDSA; and slapd doesn't seem to support DHE (!?) so
  # we're stuck with "plain RSA" Key-Exchange. Also, there is a bug with
  # SHA-512.
  command: genkeypair.sh x509
                         --pubkey=/etc/ldap/ssl/{{ item.name }}.pem
                         --privkey=/etc/ldap/ssl/{{ item.name }}.key
                         --ou=LDAP {{ item.ou }} --cn={{ item.name }}
                         --usage=digitalSignature,keyEncipherment
                         -t rsa -b 4096 -h sha256
                         --chown="root:openldap" --chmod=0640
  register: r3
  changed_when: r3.rc == 0
  failed_when: r3.rc > 1
  with_items:
    - { group: 'LDAP-provider', name: ldap.fripost.org, ou:               }
    - { group: 'MX',            name: mx,               ou: --ou=SyncRepl }
    - { group: 'lists',         name: lists,            ou: --ou=SyncRepl }
  when: "item.group in group_names"
  tags:
    - genkey

- name: Fetch slapd's X.509 certificate
  # Ensure we don't fetch private data
  sudo: False
  fetch: src=/etc/ldap/ssl/{{ item.name }}.pem
         dest=certs/ldap/
         fail_on_missing=yes
         flat=yes
  with_items:
    - { group: 'LDAP-provider', name: ldap.fripost.org }
    - { group: 'MX',            name: mx               }
    - { group: 'lists',         name: lists            }
  when: "item.group in group_names"
  tags:
    - genkey

- name: Copy the SyncProv's server certificate
  copy: src=certs/ldap/ldap.fripost.org.pem
        dest=/etc/ldap/ssl/ldap.fripost.org.pem
        owner=root group=root
        mode=0644
  tags:
    - genkey
  when: "'LDAP-provider' not in group_names"

- name: Copy fripost & amavis' schema
  copy: src=etc/ldap/schema/{{ item }}
        dest=/etc/ldap/schema/{{ item }}
        owner=root group=root
        mode=0644
  # It'd certainly be nicer if we didn't have to deploy amavis' schema
  # everywhere, but we need the 'objectClass' in our replicates, hence
  # they need to be aware of the 'amavisAccount' class.
  with_items:
    - fripost.ldif
    - amavis.schema
  tags:
    - amavis

- name: Load amavis' schema
  openldap: target=/etc/ldap/schema/amavis.schema state=present
            format=slapd.conf name=amavis
  tags:
    - ldap

- name: Load Fripost' schema
  openldap: target=/etc/ldap/schema/fripost.ldif state=present
  tags:
    - ldap

- name: Configure the LDAP database
  openldap: target=etc/ldap/database.ldif.j2 local=template
            state=present

- name: Start slapd
  service: name=slapd state=started
  when: not (r1.changed or r2.changed or r3.changed)

- meta: flush_handlers