---
- name: Basic Debian Linux Setup
  hosts: all
  tasks:
    #- name: Print all available facts
    #  ansible.builtin.debug:
    #    var: ansible_facts

    - name: Install Basic Packages
      apt:
        name:
          - dhcpcd5
          - hd-idle
          - psutils
          - psmisc
          - procps
          - htop
          - iotop
          - sysstat
          - jnettop
          - strace
          - vim
          - git
          - man-db
          - net-tools
          - tmux
          - netcat
          - ethtool
          - debconf-utils
          - iputils-ping
          - lsof
          - inotify-tools
          - rsync
          - dos2unix
          - locales
          - iproute2
          - logrotate
          - curl
          - moreutils
          - ffmpeg
          - mediainfo
          - smartmontools
          - telnet
          - libstring-approx-perl
          - postfix
          - zip
          - nmap
          - whois
          - libfile-readbackwards-perl
          - libcrypt-cbc-perl
          - libcrypt-des-perl
          - at
          - pwgen
          - certbot
          - btrfs-progs
          - ufw
          - jq
          - btrfsmaintenance
          - cifs-utils
          - apt-transport-https
          - sudo
          - golang
          - make
          - openssh-server
        update_cache: yes
        install_recommends: no

    - name: add dhcpcd to startup
      command: systemctl enable dhcpcd
      args:
        creates: /etc/systemd/system/multi-user.target.wants/dhcpcd.service

    - name: No DHCPcd for internal interfaces
      ansible.builtin.lineinfile:
        path: /etc/dhcpcd.conf
        line: denyinterfaces docker0 virbr0 tornet0 veth* br*

    - name: Disable all Network-config but source interfaces.d in /etc/network/interfaces because dhcpcd will do the job
      replace:
        path: /etc/network/interfaces
        regexp: '(^iface .*)'
        replace: '#\1'

    - name: Disable all Network-config but source interfaces.d in /etc/network/interfaces because dhcpcd will do the job
      replace:
        path: /etc/network/interfaces
        regexp: '(^allow-hotplug .*)'
        replace: '#\1'

    - name: Disable all Network-config but source interfaces.d in /etc/network/interfaces because dhcpcd will do the job
      replace:
        path: /etc/network/interfaces
        regexp: '(^auto .*)'
        replace: '#\1'

    - name: Set a hostname
      ansible.builtin.hostname:
        name: "{{inventory_hostname}}"
    
    - name: Set timezone to Europe/Berlin
      community.general.timezone:
        name: Europe/Berlin
    
#    - name: Create {{ ansible_facts['hostname'] }}adm User
#      ansible.builtin.user:
#        name: "{{ ansible_facts['hostname'] }}adm"
#        comment: "{{ ansible_facts['hostname'] }}-Admin"
#        uid: 1000
#        group: users
#        password: $6$Zqar9GCRvbVgPlZ/$L2xAMekMjE5PXuWY0WbmUcugJkqD14O6/cgC02O0hT5vOdiDj5Pcp6FU/Zz.rCkWKVSPsmTc2OtXAmQIHLc1V1

    - name: Allow the hostnameadm User all sudo commands
      community.general.sudoers:
        name: ALL
        state: present
        user: "{{ ansible_facts['hostname'] }}adm"
        commands: ALL

    - name: Remove root-Password
      user:
        name: root
        password: '*'

    - name: German keyboard layout
      ansible.builtin.lineinfile:
        path: /etc/default/keyboard
        regexp: '^XKBLAYOUT=".+$'
        line: 'XKBLAYOUT="de"'
        backup: yes
      notify: setupcon

    - name: nodeadkeys
      ansible.builtin.lineinfile:
        path: /etc/default/keyboard
        regexp: '^XKBVARIANT=".+$'
        line: 'XKBVARIANT="nodeadkeys"'
        backup: yes
      notify: setupcon

    - name: Prefer ipv4 over ipv6 to avoid problems and waiting times
      ansible.builtin.lineinfile:
        path: /etc/gai.conf
        regexp: '^#precedence ::ffff:0:0/96  100'
        line: "precedence ::ffff:0:0/96  100  # CHANGED BY ANSIBLE"
        backup: yes

    - name: Ensure en_US.UTF-8 locale exists
      community.general.locale_gen:
        name: en_US.UTF-8 
        state: present
    - name: Ensure en_GB.UTF-8 locale exists
      community.general.locale_gen:
        name: en_GB.UTF-8
        state: present
    - name: Ensure de_DE.UTF-8 locale exists
      community.general.locale_gen:
        name: de_DE.UTF-8
        state: present
      notify: localectl

    - name: SSHD hardening
      blockinfile:
        path: /etc/ssh/sshd_config.d/hardening.conf
        mode: "0444"
        owner: root
        group: root
        create: yes
        insertbefore: BOF # Beginning of the file
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          Port 22
          Port 33
          PermitRootLogin without-password
          PubkeyAuthentication yes
          X11Forwarding no
          AllowAgentForwarding no
          AllowTcpForwarding yes
          Subsystem sftp internal-sftp -f AUTH -l INFO -u 0007
          ## Ciphers Check https://sshcheck.com/server/{{inventory_hostname}}/
          # nmap -p22 -n -sV --script ssh2-enum-algos localhost
          KexAlgorithms curve25519-sha256@libssh.org
          HostKeyAlgorithms ssh-ed25519
          Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com
          MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com
          IgnoreRhosts yes
          LogLevel VERBOSE
          AddressFamily any
        backup: yes
        validate: /usr/sbin/sshd -T -f %s
      notify:
      - Restart sshd

    - name: Disable external sftp-Subsystem
      replace:
        path: /etc/ssh/sshd_config
        regexp: '(^Subsystem.*sftp.*)'
        replace: '#\1'
        validate: /usr/sbin/sshd -T -f %s
        backup: yes
      notify:
      - Restart sshd

    - name: Create .ssh dir
      ansible.builtin.file:
        path: /root/.ssh
        owner: root
        group: root
        state: directory
        mode: '0550'

    - name: Generate an OpenSSH keypair ed25519
      community.crypto.openssh_keypair:
        path: /root/.ssh/id_ed25519
        type: ed25519

    - ansible.posix.sysctl:
        name: vm.swappiness
        value: '5'
        state: present

    - name: shell profile
      blockinfile:
        path: /etc/profile.d/settings-from-ansible.sh
        create: yes
        mode: "0444"
        owner: root
        group: root
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          if ${use_color} ; then
            if [[ ${EUID} == 0 ]] ; then
              PS1='\[\033[01;31m\]\h\[\033[01;34m\] \w \$\[\033[00m\] '
            else
              PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] '
            fi
            EDITOR="/usr/bin/vim"
            HISTSIZE=10000
            HISTFILESIZE=10000
            if [ -f /etc/debian_version ]
            then
              export PATH="$PATH:/usr/local/bin:/usr/local/sbin"
              export LANG="en_US.UTF-8"
              export DEBIAN_FRONTEND='noninteractive'
              alias ls='ls --color=auto'
              alias grep='grep --colour=auto'
              alias egrep='egrep --colour=auto'
              alias fgrep='fgrep --colour=auto'
            fi
          else
            # show root@ when we don't have colors
            PS1+='\u@\h \w \$'
          fi
        backup: yes
        validate: /bin/bash -n %s

    - name: vim settings
      blockinfile:
        path: /etc/vim/vimrc.local
        mode: "0444"
        owner: root
        group: root
        create: yes
        marker: "\" {mark} ANSIBLE MANAGED BLOCK"
        block: |
          :syntax on
          let g:skip_defaults_vim = 1
          set encoding=utf-8
          syntax match nonascii "[^[:alnum:][:punct:][:space:]]/"
          highlight nonascii guibg=Red ctermbg=2
        backup: yes

    #- name: gaboshlib.include
    #  copy:
    #    src: configs/etc/bash
    #    dest: /etc/
    #    owner: root
    #    group: root
    #    mode: "0444"
    #    directory_mode: "0555"
    #    backup: yes
    #    validate: /bin/bash -n %s
    
    - name: gaboshlib from git
      ansible.builtin.git:
        repo: 'https://gitea.ds9.dedyn.io/olli/gaboshlib.git'
        dest: /etc/bash

    - name: systemd-journald settings
      blockinfile:
        path: /etc/systemd/journald.conf.d/journald.local.conf
        create: yes
        mode: "0444"
        owner: root
        group: root
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          [Journal]
          Storage=persistent
          SystemMaxUse=30M
          ForwardToSyslog=yes
        backup: yes
      notify:
      - Restart journald

    - name: Create updates dir /usr/local/sbin/autoupdate.d
      ansible.builtin.file:
        path: /usr/local/sbin/autoupdate.d
        owner: root
        group: root
        state: directory
        mode: '0700'

    - name: /usr/local/sbin/autoupdate.sh
      blockinfile:
        path: /usr/local/sbin/autoupdate.sh
        mode: "0500"
        owner: root
        group: root
        create: yes
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          . /etc/bash/gaboshlib.include
          g_nice
          g_lockfile
          g_all-to-syslog
          set -o pipefail
          find /usr/local/sbin/autoupdate.d -name "*.update" -type f | sort | while read update
          do
            g_echo "Running: $update"
            . "$update"
            sleep 60
          done
        backup: yes
        validate: /bin/bash -n %s

    - name: /usr/local/sbin/autoupdate.sh shebang
      lineinfile:
        path: /usr/local/sbin/autoupdate.sh
        insertbefore: BOF
        line: "#!/bin/bash"

    - name: /usr/local/sbin/autoupdate.d/debian.update
      blockinfile:
        path: /usr/local/sbin/autoupdate.d/debian.update
        mode: "0400"
        owner: root
        group: root
        create: yes
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          g_echo_ok "Prüfe auf Systemupdates"
          apt-get update || g_echo_error "apt-get update fehlgeschlagen"
          if ! apt-get -s dist-upgrade 2>&1 | sed -e "s/'/'\\\\''/g; 1s/^/'/; \$s/\$/'/" | tee $g_tmp/sys-updatelist | egrep "^0.+, 0 .+, 0 .+ 0 .+\."
          then
            g_echo_warn "Systemupdate wird eingespielt: $(cat $g_tmp/sys-updatelist)"
            DEBIAN_FRONTEND=noninteractive apt-get -yy dist-upgrade | sed -e "s/'/'\\\\''/g; 1s/^/'/; \$s/\$/'/" | tee $g_tmp/sys-update || g_echo_error "apt-get -yy dist-upgrade failed $($g_tmp/sys-update)"
            DEBIAN_FRONTEND=noninteractive needrestart -b -r a | egrep -q "^NEEDRESTART-KSTA: [2|3]" && g_echo_warn "Server Reboot benötigt"
          fi
        backup: yes
        validate: /bin/bash -n %s

    - name: /etc/cron.d/autoupdate_local
      blockinfile:
        path: /etc/cron.d/autoupdate_local
        mode: "0400"
        owner: root
        group: root
        create: yes
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          ## Auto-Update
          5 6 * * * root /usr/local/sbin/autoupdate.sh
        backup: yes

#    - name: Autoupdate
#      copy:
#        src: configs/usr/local/sbin/autoupdate.sh
#        dest: /usr/local/sbin/autoupdate.sh
#        owner: root
#        group: root
#        mode: "0555"
#        backup: yes
#        validate: /bin/bash -n %s
#    - name: Autoupdate Cronb
#      copy:
#        src: configs/etc/cron.d/autoupdate_local
#        dest: /etc/cron.d/autoupdate_local
#        owner: root
#        group: root
#        mode: "0444"
#        backup: yes
 
    - name: /etc/rsyslog.d/00-services-remote.conf
      blockinfile:
        path: /etc/rsyslog.d/00-services-remote.conf
        create: yes
        mode: "0444"
        owner: root
        group: root
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          # Listen for remote Logging (UDP)
          module(load="imudp")
          input(type="imudp" port="514")
          # Hosts
          if $hostname startswith '192.168.1.1' and $msg contains 'User admin login from 192.168.1.2 successful' then stop
          if $hostname != '{{ ansible_facts['hostname'] }}' and $msg contains 'wdGetDidSendCredentials not implemented' and $programname contains 'citrix-wfica' then stop
          if $hostname != '{{ ansible_facts['hostname'] }}' and $msg contains 'CGPrecv: socket 0x' and $programname contains 'citrix-wfica' then stop
          if $hostname != '{{ ansible_facts['hostname'] }}' and $msg contains 'doEncryptData inbuffersize: ' and $programname contains 'citrix-wfica' then stop
          if $hostname != '{{ ansible_facts['hostname'] }}' and $msg contains 'SSLPutDataFn inbuffersize: ' and $programname contains 'citrix-wfica' then stop
          if $hostname != '{{ ansible_facts['hostname'] }}' and $msg contains 'SRC=192.168.' and $programname contains 'kernel' then stop
          
          if $hostname startswith '192.168.1.1' then /var/log/zyxel.log
          if $hostname startswith '192.168.1.1' then stop
          if $hostname startswith 'raspberry-' then /var/log/Raspberrys.log
          if $hostname startswith 'raspberry-' then stop
          if $hostname startswith 'router-' then /var/log/router.log
          if $hostname startswith 'router-' then stop
          
          # Auth success (for share-auth 2FA)
          #if $programname == 'nextcloud-audit' and $msg contains 'Login successful:' then /var/log/auth-success.log
          #if $programname == 'imaps' and $msg contains 'TLS User logged in' then /var/log/auth-success.log
          
          if $hostname == 'xgabosh' then /var/log/xgabosh.log
          if $hostname == 'xgabosh' then stop
          if $hostname != '{{ ansible_facts['hostname'] }}' and $hostname != 'share' and $hostname != 'backup-chroot' then /var/log/GTC-Hosts.log
          if $hostname != '{{ ansible_facts['hostname'] }}' and $hostname != 'share' and $hostname != 'backup-chroot' then stop
        backup: yes

      notify:
      - Restart rsyslog

    - name: rsyslog-config local
      copy:
        src: configs/etc/rsyslog.d/01-services-local.conf
        dest: /etc
        owner: root
        group: root
        mode: "0444"
        backup: yes
      notify:
      - Restart rsyslog

    - name: hd-idle for spinning down disks after XXX seconds idle
      blockinfile:
        path: /etc/default/hd-idle
        create: yes
        mode: "0444"
        owner: root
        group: root
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          HD_IDLE_OPTS="-i 300 -l /var/log/hd-idle.log"
        backup: yes
      notify:
      - Restart hd-idle

    - name: /etc/default/btrfsmaintenance
      blockinfile:
        path: /etc/default/btrfsmaintenance
        mode: "0444"
        owner: root
        group: root
        create: yes
        insertbefore: EOF
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          BTRFS_LOG_OUTPUT="syslog"
          BTRFS_BALANCE_MOUNTPOINTS="auto"
          BTRFS_BALANCE_PERIOD="monthly"
          BTRFS_SCRUB_MOUNTPOINTS="auto"
          BTRFS_SCRUB_PERIOD="monthly"
        backup: yes

    - name: /etc/logrotate.conf (weekly->daily)
      ansible.builtin.lineinfile:
        path: /etc/logrotate.conf
        regexp: '^weekly$'
        line: 'daily'
        backup: yes

    - name: /etc/logrotate.d/apache2 (remove delaycompress)
      ansible.builtin.lineinfile:
        path: /etc/logrotate.d/apache2
        regexp: '.*delaycompress$'
        state: absent

    - name: /etc/logrotate.d/00-local
      blockinfile:
        path: /etc/logrotate.d/00-local
        mode: "0444"
        owner: root
        group: root
        create: yes
        marker: "# {mark} ANSIBLE MANAGED BLOCK"
        block: |
          /var/log/dmesgcron
          /var/log/messages
          /var/log/*.log
          {
            rotate 7
            daily
            missingok
            notifempty
            copytruncate
            compress
            postrotate
              /usr/lib/rsyslog/rsyslog-rotate
            endscript
          }

    - name: Remove logrotates
      ansible.builtin.file:
        path: /etc/logrotate.d/alternatives
        state: absent

    - name: Remove logrotates
      ansible.builtin.file:
        path: /etc/logrotate.d/dpkg
        state: absent

    - name: Remove logrotates
      ansible.builtin.file:
        path: /etc/logrotate.d/rsyslog
        state: absent


  handlers:

    - name: setupcon
      ansible.builtin.shell: setupcon

    - name: localectl
      ansible.builtin.shell: localectl set-locale LANG=de_DE.UTF-8

    - name: Restart sshd
      service:
        name: sshd
        state: restarted

    - name: Restart journald
      service:
        name: systemd-journald
        state: restarted

    - name: Restart rsyslog
      service:
        name: rsyslog
        state: restarted

    - name: Restart hd-idle
      service:
        name: hd-idle
        state: restarted