Remote MOTD

README.md

@@ -11,6 +11,8 @@
 
 Install and configure dynamic MOTD and SSH banner
 
+This role uses [https://github.com/claranet/motd](https://github.com/claranet/motd) by default to get the banner and the MOTD
+
 ```
 System info:
   Hostname·········: claranet_motd_ubuntu-20.04
@@ -44,11 +46,19 @@ ansible-galaxy install claranet.motd
 
 ## :gear: Role variables
 
-Variable                  | Default value         | Description
+Variable                     | Default value                                                 | Description
---------------------------|-----------------------|----------------------------------------
+-----------------------------|---------------------------------------------------------------|----------------------------------------------------------------
-motd_disable_default_motd | true                  | Disable system default MOTD (/etc/motd)
+motd_disable_default_motd    | true                                                          | Disable system default MOTD (/etc/motd)
-motd_banner_template      | etc/banner            | SSH banner template
+motd_banner_template         | https://raw.githubusercontent.com/claranet/motd/master/banner | SSH banner template<br>Can be a URL, a local template or `null`
-motd_template             | usr/local/bin/dynmotd | Dynmaic MOTD template
+motd_banner_template_prepend | ""                                                            | Prepend raw content to `motd_banner_template`
+motd_banner_template_append  | ""                                                            | Append raw content to `motd_banner_template`
+motd_banner_template_username| {{ motd_template_username }}                                  | Used when `motd_banner_template` is an URL
+motd_banner_template_password| {{ motd_template_password }}                                  | Used when `motd_banner_template` is an URL
+motd_template                | https://raw.githubusercontent.com/claranet/motd/master/motd   | Dynmaic MOTD template<br>Can be a URL or a local template
+motd_template_prepend        | ""                                                            | Prepend raw content to `motd_template`
+motd_template_append         | See [defaults/main.yml](defaults/main.yml)                    | Append raw content to `motd_template`
+motd_template_username       | ""                                                            | Used when `motd_template` is an URL
+motd_template_password       | ""                                                            | Used when `motd_template` is an URL
 
 ## :pencil2: Example Playbook
 
@@ -56,7 +66,8 @@ motd_template             | usr/local/bin/dynmotd | Dynmaic MOTD template
 ---
 - hosts: all
   roles:
-    - claranet.motd
+    - role: claranet.motd
+      motd_template: "{{ playbook_dir }}/templates/dynmotd.j2"
 ```
 
 ## :closed_lock_with_key: [Hardening](HARDENING.md)

defaults/main.yml

@@ -1,4 +1,17 @@
 ---
 motd_disable_default_motd: true
-motd_banner_template: etc/banner
+motd_banner_template: https://raw.githubusercontent.com/claranet/motd/master/banner
-motd_template: usr/local/bin/dynmotd
+motd_template: https://raw.githubusercontent.com/claranet/motd/master/motd
+motd_banner_template_prepend: ""
+motd_banner_template_append: ""
+motd_template_prepend: ""
+motd_template_append: |
+
+  echo -e "\e[0;39mAnsible:
+    Last deployment\e[2m···\e[0m: {{ ansible_date_time.iso8601_micro }}
+  "
+
+motd_template_username: ""
+motd_template_password: ""
+motd_banner_template_username: "{{ motd_template_username }}"
+motd_banner_template_password: "{{ motd_template_password }}"

tasks/main.yml

@@ -23,8 +23,8 @@
   when: motd_disable_default_motd|bool
 
 - name: Apply template {{ motd_banner_template }} on {{ _motd_banner_file_path }}
-  template:
+  copy:
-    src: "{{ motd_banner_template }}"
+    content: "{{ motd_banner_template_prepend|default('') + _motd_banner_template_content + motd_banner_template_append|default('') }}"
     dest: "{{ _motd_banner_file_path }}"
     owner: root
     group: root
@@ -40,8 +40,8 @@
   notify: Restart sshd
 
 - name: Apply template {{ motd_template }} on {{ _motd_file_path }}
-  template:
+  copy:
-    src: "{{ motd_template }}"
+    content: "{{ motd_template_prepend|default('') + _motd_template_content + motd_template_append|default('') }}"
     dest: "{{ _motd_file_path }}"
     owner: root
     group: root

templates/etc/banner

@@ -1,32 +0,0 @@
-                                     ,╓╗╖æææææ╖╖,
-                                 ,╗╣╬╬╣╝╜╙╙"╙╙╜╝╣Ñ╬æ╖
-                               ╓╣╬╝╜              "╙╣╬╣µ
-                             ╓╬╬M                    "╢╬╣,
-                            ╣╬╝           ╣Ñæ          ╙╬╬╖╖╖╖╖╓,
-                        ,,╓╣╬M        ,╗  ╬╬╬ ╓╖,        ╝╜╜╜╜╝╣╬╬╣╖
-                    ╓æ╣Ñ╬╣╝╝╝       ╓╣╬╝  ╬╬╬ ²╣╬╣µ              `╙╣╬æ,
-                  ╓╣╬╝^            ╣╬╝    ╬╬╬   `╣╬æ                ╙╬╬φ
-                 ╣╬M              ║╬╬     ╢╣M     ╬╬U                 ╢╬φ
-                ╬╬M               ║╬╬             ╬╬M                  ╬╬∩
-               ║╬╬                "╬ѵ           ╓Ñ╬                   ╟╬┼
-               ╟╬┼                 `╣╬╖,       ,╢╬╣                    ╟╬┼
-               ║╬╬                   ╙╢╬╬╣ææ╬╣╬╬╝`                     ╬╬M
-                ╬╬µ                      `"""`                        ╣╬M
-                `╬╬φ                                                ╓╬╬M
-                  ╚╬╬╖,                                          ,╗╣╬╝
-                    ╙╣Ñ╬╣æ╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖╖æ╣╬╬╝╜ 
-                       `"╙╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╜╙"     ® 
-
-                  ╖╖┬                                                       ╓╖╖
-                  ╬╬M                                                       ╓╬╬
-        ,╗╣╬╬╣æ,  ╬╬M  ,æ╣╬╬╬æ╖   ß╣ß╓æ╣  ╓æ╣╬╬╣æ,  -╣╣╓æ╣╬╣╖    ,╖╣╬╬╣╖,  ╢╣╬╬╣╣
-       ║╬╬"  `╝╜* ╬╬M  ╝╝┘   ╟╬φ  ╬╬╬M"` ª╝╝   ╙╬Ñ  "╬╬M   ║╬╬  ╢╬M    ╢╬φ  ╓╬╬
-      -╬╬H        ╬╬M  ╓æ╣╬╬╣╬╬M  ╬╬╬     ╗╢╣╬╣╣╬╬⌐ "╬╬    ╓╬╬  ╬╬╬╬╬╬╬╬╬╬  ╓╬╬
-       ╢╬φ    ╓,, ╬╬M ╢╬M    ╟╬M  ╬╬╪    ╬╬M   ,╬╬⌐ "╬╬    ╓╬╬  ╬╬φ     ╓   ╓╬╬
-        ╚╬╬╣╣╣╬╝  ╬╬M ╙╣╬╣æ╣╬╬╬M  ╬╬╪    ║╬╬ææ╣╣╬╬⌐ "╬╬    ╓╬╬   ╚╬╬╣╣╣╬╣╜  '╬╬╣æ
-           ``            ``                ```                      ```       ```
-
-WARNING : Unauthorized access to this system is forbidden and will be
-prosecuted by law. By accessing this system, you agree that your actions
-may be monitored if unauthorized usage is suspected.
-

templates/usr/local/bin/dynmotd

@@ -1,85 +0,0 @@
-#!/bin/bash
-
-# get load averages
-IFS=" " read LOAD1 LOAD5 LOAD15 <<<$(awk '{ print $1,$2,$3 }' /proc/loadavg)
-# get free memory
-IFS=" " read USED AVAIL TOTAL <<<$(free -htm | grep "Mem" | awk {'print $3,$7,$2'})
-# get processes
-PROCESS=$(ps -eo user=|sort|uniq -c | awk '{ print $2 " " $1 }')
-PROCESS_ALL=$(echo "$PROCESS"| awk {'print $2'} | awk '{ SUM += $1} END { print SUM }')
-PROCESS_ROOT=$(echo "$PROCESS"| grep root | awk {'print $2'})
-PROCESS_USER=$(echo "$PROCESS"| grep -v root | awk {'print $2'} | awk '{ SUM += $1} END { print SUM }')
-# get processors
-PROCESSOR_NAME=$(grep "model name" /proc/cpuinfo | cut -d ' ' -f3- | awk {'print $0'} | head -1)
-PROCESSOR_COUNT=$(grep -ioP 'processor\t:' /proc/cpuinfo | wc -l)
-
-LOCAL_IP_ADDRESSES=$(hostname -I | sed 's/ /\n\                     /g' | sed '/^[[:space:]]*$/d')
-
-# Processing available updates with yum is too long
-{% if ansible_pkg_mgr == "apt" %}
-UPDATES_AVAILABLE=$(apt list --upgradable 2>/dev/null)
-UPDATES_AVAILABLE_NB=$(echo -e "$UPDATES_AVAILABLE" | wc -l)
-SECURITY_UPDATES_AVAILABLE_NB=$(echo -e "$UPDATES_AVAILABLE" | grep "\-security" | wc -l)
-{% endif %}
-
-# colors
-W="\e[0;39m"
-G="\e[1;32m"
-R="\e[1;31m"
-
-dim="\e[2m"
-undim="\e[0m"
-
-echo -e "${W}System info:
-$W  Hostname$dim·········$undim: $W${HOSTNAME}
-$W  Distro$dim···········$undim: $W$(grep "PRETTY_NAME" /etc/*release | cut -d "=" -f 2- | sed 's/"//g')
-$W  Kernel$dim···········$undim: $W$(uname -sr)
-{% if ansible_pkg_mgr == "apt" %}
-$W  Updates available: $W$UPDATES_AVAILABLE_NB ($SECURITY_UPDATES_AVAILABLE_NB security)
-{% endif %}
-$W  Uptime$dim···········$undim: $W$(uptime -p)
-$W  Load$dim·············$undim: $G$LOAD1$W (1m), $G$LOAD5$W (5m), $G$LOAD15$W (15m)
-$W  Processes$dim········$undim: $G$PROCESS_ROOT$W (root), $G$PROCESS_USER$W (user), $G$PROCESS_ALL$W (total)
-$W  CPU$dim··············$undim: $W$PROCESSOR_NAME ($G$PROCESSOR_COUNT$W vCPU)
-$W  Memory$dim···········$undim: $G$USED$W used, $G$AVAIL$W avail, $G$TOTAL$W total
-$W  Local IPs$dim········$undim: $LOCAL_IP_ADDRESSES$W"
-
-# config
-max_usage=90
-bar_width=50
-
-# disk usage: ignore zfs, squashfs & tmpfs
-mapfile -t dfs < <(df -H -x zfs -x squashfs -x tmpfs -x devtmpfs -x overlay --output=target,pcent,size | tail -n+2)
-printf "\nDisk usage:\n"
-
-for line in "${dfs[@]}"; do
-    # get disk usage
-    usage=$(echo "$line" | awk '{print $2}' | sed 's/%//')
-    used_width=$((($usage*$bar_width)/100))
-    # color is green if usage < max_usage, else red
-    if [ "${usage}" -ge "${max_usage}" ]; then
-        color=$R
-    else
-        color=$G
-    fi
-    # print green/red bar until used_width
-    bar="[${color}"
-    for ((i=0; i<$used_width; i++)); do
-        bar+="="
-    done
-    # print dimmmed bar until end
-    bar+="${W}${dim}"
-    for ((i=$used_width; i<$bar_width; i++)); do
-        bar+="·"
-    done
-    bar+="${undim}]"
-    # print usage line & bar
-    echo "${line}" | awk '{ printf("%-31s%+3s used out of %+4s\n", $1, $2, $3); }' | sed -e 's/^/  /'
-    echo -e "${bar}" | sed -e 's/^/  /'
-done
-
-printf "\n"
-
-echo -e "${W}Ansible:
-${W}  Last deployment$dim···$undim: {{ ansible_date_time.iso8601_micro }}
-"

vars/main.yml

@@ -5,3 +5,7 @@ _motd_pam_sshd_file_path: /etc/pam.d/sshd
 _motd_banner_file_path: /etc/banner
 _motd_banner_state: "{{ 'present' if motd_banner_template else 'absent' }}"
 _motd_file_path: /usr/local/bin/dynmotd
+_motd_lookup_method: "{{ 'url' if motd_template is match('http(s)?:\/\/') else 'template' }}"
+_motd_template_content: "{{ lookup(_motd_lookup_method, motd_template, split_lines=False, username=motd_template_username, password=motd_template_password) }}"
+_motd_banner_lookup_method: "{{ 'url' if motd_banner_template is match('http(s)?:\/\/') else 'template' }}"
+_motd_banner_template_content: "{{ lookup(_motd_banner_lookup_method, motd_banner_template, split_lines=False, username=motd_banner_template_username, password=motd_banner_template_password) }}"