---
- debug:
    msg: "Warning: empty 'evolinux_ssh_password_auth_addresses' variable, tasks will be skipped!"
  when: evolinux_ssh_password_auth_addresses == []

- name: Security directives for Evolinux
  blockinfile:
    dest: /etc/ssh/sshd_config
    block: |
      Match Group evolinux-sudo
          PasswordAuthentication no
      Match Address {{ evolinux_ssh_password_auth_addresses | join(',') }}
          PasswordAuthentication yes
    marker: "# {mark} EVOLINUX PASSWORD RESTRICTIONS"
    insertafter: EOF
    validate: '/usr/sbin/sshd -T -f %s'
  notify: reload sshd
  when: not evolinux_ssh_password_auth_addresses == []

# - name: verify Match Address directive
#   command: "grep 'Match Address' /etc/ssh/sshd_config"
#   changed_when: False
#   failed_when: False
#   check_mode: no
#   register: grep_matchaddress_ssh
#
# - name: Add Match Address sshd directive
#   lineinfile:
#     dest: /etc/ssh/sshd_config
#     line: "\nMatch Address {{ evolinux_ssh_password_auth_addresses | join(',') }}\n    PasswordAuthentication yes"
#     insertafter: '# +ForceCommand cvs server'
#     validate: '/usr/sbin/sshd -T -f %s'
#   notify: reload sshd
#   when: evolinux_ssh_match_address and grep_matchaddress_ssh.rc != 0 and evolinux_ssh_password_auth_addresses != []
#
# - name: Modify Match Address sshd directive
#   replace:
#     dest: /etc/ssh/sshd_config
#     regexp: '^(Match Address ((?!{{ item }}).)*)$'
#     replace: '\1,{{ item }}'
#     validate: '/usr/sbin/sshd -T -f %s'
#   with_items: "{{ evolinux_ssh_password_auth_addresses }}"
#   notify: reload sshd
#   when: evolinux_ssh_match_address and grep_matchaddress_ssh.rc == 0
#
# - name: Add Match Group sudo without password
#   lineinfile:
#     dest: /etc/ssh/sshd_config
#     line: "\nMatch Group sudo\n    PasswordAuthentication no"
#     insertbefore: '^Match Address'
#     validate: '/usr/sbin/sshd -T -f %s'
#   notify: reload sshd

- name: disable SSH access for root
  replace:
    dest: /etc/ssh/sshd_config
    regexp: '^PermitRootLogin (yes|without-password)'
    replace: "PermitRootLogin no"
  notify: reload sshd
  when: evolinux_ssh_disable_root

# We disable AcceptEnv because it can be a security issue, but also because we
# do not want clients to push their environment variables like LANG.
- name: disable AcceptEnv in ssh config
  replace:
    dest: /etc/ssh/sshd_config
    regexp: '^AcceptEnv'
    replace: "#AcceptEnv"
  notify: reload sshd
  when: evolinux_ssh_disable_acceptenv

- name: Set log level to verbose (for Debian >= 9)
  replace:
    dest: /etc/ssh/sshd_config
    regexp: '^#?LogLevel [A-Z]+'
    replace: "LogLevel VERBOSE"
  notify: reload sshd
  when: ansible_distribution_major_version | version_compare('9', '>=')

- meta: flush_handlers