From d050172b777f751e0a0960a48f0775d4a7abb6a8 Mon Sep 17 00:00:00 2001
From: Bertrand Benjamin <benjamin.bertrand@opytex.org>
Date: Wed, 1 Jun 2022 16:24:10 +0200
Subject: [PATCH] Feat: add ssh role

---
 roles/ssh/README.md         | 38 +++++++++++++++++++++++++++++++++++++
 roles/ssh/defaults/main.yml |  4 ++++
 roles/ssh/handlers/main.yml |  4 ++++
 roles/ssh/tasks/debian.yml  |  5 +++++
 roles/ssh/tasks/main.yml    | 35 ++++++++++++++++++++++++++++++++++
 roles/ssh/vars/main.yml     |  2 ++
 6 files changed, 88 insertions(+)
 create mode 100644 roles/ssh/README.md
 create mode 100644 roles/ssh/defaults/main.yml
 create mode 100644 roles/ssh/handlers/main.yml
 create mode 100644 roles/ssh/tasks/debian.yml
 create mode 100644 roles/ssh/tasks/main.yml
 create mode 100644 roles/ssh/vars/main.yml

diff --git a/roles/ssh/README.md b/roles/ssh/README.md
new file mode 100644
index 0000000..225dd44
--- /dev/null
+++ b/roles/ssh/README.md
@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).
diff --git a/roles/ssh/defaults/main.yml b/roles/ssh/defaults/main.yml
new file mode 100644
index 0000000..2184e67
--- /dev/null
+++ b/roles/ssh/defaults/main.yml
@@ -0,0 +1,4 @@
+---
+# defaults file for ssh
+sshd_configfilename: /etc/ssh/sshd_config
+
diff --git a/roles/ssh/handlers/main.yml b/roles/ssh/handlers/main.yml
new file mode 100644
index 0000000..885fc61
--- /dev/null
+++ b/roles/ssh/handlers/main.yml
@@ -0,0 +1,4 @@
+---
+# handlers file for ssh
+- name: restart sshd
+  service: name=ssh state=restarted
diff --git a/roles/ssh/tasks/debian.yml b/roles/ssh/tasks/debian.yml
new file mode 100644
index 0000000..68c4b25
--- /dev/null
+++ b/roles/ssh/tasks/debian.yml
@@ -0,0 +1,5 @@
+---
+- name: Debian - Install ssh
+  apt:
+    name: openssh-server
+    state: present
diff --git a/roles/ssh/tasks/main.yml b/roles/ssh/tasks/main.yml
new file mode 100644
index 0000000..b6d164e
--- /dev/null
+++ b/roles/ssh/tasks/main.yml
@@ -0,0 +1,35 @@
+---
+# tasks file for core
+- name: Install os-specific packages
+  include_tasks: "{{ ansible_os_family | lower }}.yml"
+
+- name: Add identity key to authorized keys on host
+  authorized_key:
+    user: "{{ ssh_target_user }}"
+    key: "{{ ssh_publickey }}"
+  register: add_identity_key
+  when: ssh_target_user is defined and ssh_publickey is defined
+
+- name: Disable empty password login
+  lineinfile:
+    dest: "{{ sshd_configfilename }}"
+    regexp: '^#?PermitEmptyPasswords'
+    line: 'PermitEmptyPasswords no'
+  notify: restart sshd
+
+- name: Disable remote root login
+  lineinfile:
+    dest: "{{ sshd_configfilename }}"
+    regexp: '^#?PermitRootLogin'
+    line: 'PermitRootLogin no'
+  notify: restart sshd
+
+- name: Disable password login
+  lineinfile:
+    dest: "{{ sshd_configfilename }}"
+    regexp: '^(#\s*)?PasswordAuthentication '
+    line: 'PasswordAuthentication no'
+  when:
+    - add_identity_key is succeeded
+    - not add_identity_key is skipped
+  notify: restart sshd
diff --git a/roles/ssh/vars/main.yml b/roles/ssh/vars/main.yml
new file mode 100644
index 0000000..91d7182
--- /dev/null
+++ b/roles/ssh/vars/main.yml
@@ -0,0 +1,2 @@
+---
+# vars file for ssh