add the ansible hacky pki generate-cert role

roles/generate-cert/LICENSE

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+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+

roles/generate-cert/README.md

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+# generate-cert
+
+This role is part of the project [Ansible Hacky PKI](https://gitea.auro.re/histausse/ansible_hacky_pki) licenced under the LGPL 3.
+
+You can use it to generate certificate and manage de small pki, but keep it mind that this program is distributed **WITHOUT ANY WARRANTY**.
+In particular, the **security** of the pki generated and the process of generated the pki **is not guaranteed**. If you find any vulnerability,
+please contact me to see if we can find a patch.
+
+Copyright 2021 Jean-Marie Mineau <histausse@protonmail.com>

roles/generate-cert/defaults/main.yml

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+---
+key_usage:
+  - digitalSignature
+  - keyEncipherment
+validity_duration: "+365d"
+time_before_expiration_for_renewal: "+30d" # need a better name
+force_renewal: no

roles/generate-cert/tasks/main.yml

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+---
+- name: Ensure the directory containing the cert exist
+  file:
+    path: "{{ directory }}"
+    state: directory
+
+- name: Test if the key already exist
+  stat:
+    path: "{{ directory }}/{{ cname }}.key"
+  register: key_file
+
+- name: Test if the cert already exist
+  stat:
+    path: "{{ directory }}/{{ cname }}.crt"
+  register: cert_file
+
+- name: Test if we need to renew the certificate
+  openssl_certificate_info:
+    path: "{{ directory }}/{{ cname }}.crt"
+    valid_at:
+      renewal: "{{ time_before_expiration_for_renewal }}"
+  register: validity
+  when: cert_file.stat.exists
+
+- name:  Generate the certificate
+  block:
+    - name: Generate private key
+      become: false
+      openssl_privatekey:
+        path: "/tmp/ansible_hacky_pki_{{ cname }}.key"
+        mode: u=rw,g=,o=
+        size: "{{ key_size | default(omit) }}"
+      delegate_to: localhost
+    
+    - name: Generate a Certificate Signing Request
+      become: false
+      openssl_csr:
+        path: "/tmp/ansible_hacky_pki_{{ cname }}.csr"
+        privatekey_path: "/tmp/ansible_hacky_pki_{{ cname }}.key"
+        common_name: "{{ cname }}"
+        country_name: "{{ country_name | default(omit) }}"
+        locality_name: "{{ locality_name | default(omit) }}"
+        state_or_province_name: "{{ state_or_province_name | default(omit) }}"
+        organization_name: "{{ organization_name | default(omit) }}"
+        organizational_unit_name: "{{ organizational_unit_name | default(omit) }}"
+        email_address: "{{ email_address | default(omit) }}"
+        basic_constraints:
+          - CA:FALSE # syntax?
+        basic_constraints_critical: yes
+        key_usage: "{{ key_usage }}"
+        key_usage_critical: yes
+        subject_alt_name: "{{ subject_alt_name | default(omit) }}"
+        crl_distribution_points: "{{ crl_distribution_points | default(omit) }}"
+      delegate_to: localhost
+    
+    - name: Put the CA in a file
+      become: false
+      copy:
+        content: "{{ ca_cert }}"
+        dest: "/tmp/ansible_hacky_pki_ca.crt"
+      delegate_to: localhost
+    
+    - name: Put the CA key in a file
+      become: false
+      copy:
+        content: "{{ ca_key }}"
+        dest: "/tmp/ansible_hacky_pki_ca.key"
+        mode: u=rw,g=,o=
+      delegate_to: localhost
+      no_log: yes
+    
+    - name: Sign the certificate
+      become: false
+      openssl_certificate:
+        path: "/tmp/ansible_hacky_pki_{{ cname }}.crt"
+        csr_path: "/tmp/ansible_hacky_pki_{{ cname }}.csr"
+        ownca_not_after: "{{ validity_duration }}"
+        ownca_path: /tmp/ansible_hacky_pki_ca.crt
+        ownca_privatekey_passphrase: "{{ ca_passphrase }}"
+        ownca_privatekey_path: /tmp/ansible_hacky_pki_ca.key
+        provider: ownca
+      delegate_to: localhost
+    
+    - name: Send private key to the server
+      copy:
+        src: "/tmp/ansible_hacky_pki_{{ cname }}.key"
+        dest: "{{ directory }}/{{ cname }}.key"
+        owner: "{{ owner | default('root') }}"
+        group: "{{ group | default('root') }}"
+        mode: "{{ key_mode | default('u=rw,g=,o=') }}"
+      no_log: yes
+    
+    - name: Send certificate to the server
+      copy:
+        src: "/tmp/ansible_hacky_pki_{{ cname }}.crt"
+        dest: "{{ directory }}/{{ cname }}.crt"
+        owner: "{{ owner | default('root') }}"
+        group: "{{ group | default('root') }}"
+        mode: "{{ key_mode | default('u=rw,g=r,o=r') }}"
+    
+    # Clean up
+    - name: Remove the local cert key
+      become: false
+      file:
+        path: "/tmp/ansible_hacky_pki_{{ cname }}.key"
+        state: absent
+      delegate_to: localhost
+    
+    - name: Remove the CSR
+      become: false
+      file:
+        path: "/tmp/ansible_hacky_pki_{{ cname }}.csr"
+        state: absent
+      delegate_to: localhost
+    
+    - name: Remove the local certificate
+      become: false
+      file:
+        path: "/tmp/ansible_hacky_pki_{{ cname }}.crt"
+        state: absent
+      delegate_to: localhost
+    
+    - name: Remove the CA certificate
+      become: false
+      file:
+        path: /tmp/ansible_hacky_pki_ca.crt
+        state: absent
+      delegate_to: localhost
+    
+    - name: Remove the CA key
+      become: false
+      file:
+        path: /tmp/ansible_hacky_pki_ca.key
+        state: absent
+      delegate_to: localhost
+  when: force_renewal or (not key_file.stat.exists) or (not cert_file.stat.exists) or (not validity.valid_at.renewal)