From 02f778604c080907d3794c49438b1c5f60b39970 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Sat, 20 Jan 2024 18:38:41 +0100
Subject: [PATCH] Add dokuwiki role

For an Alpine Linux VM.
---
 inventory.yml                                 |  2 +-
 roles/dokuwiki/files/default.conf             | 11 +++
 roles/dokuwiki/files/userstyle.css            | 33 +++++++++
 roles/dokuwiki/handlers/main.yml              |  5 ++
 roles/dokuwiki/tasks/main.yml                 | 69 +++++++++++++++++++
 roles/dokuwiki/tasks/nginx.yml                | 42 +++++++++++
 roles/dokuwiki/tasks/php.yml                  | 45 ++++++++++++
 .../templates/doku.fri.uni-lj.si.conf.j2      | 36 ++++++++++
 setup.yml                                     |  4 ++
 9 files changed, 246 insertions(+), 1 deletion(-)
 create mode 100644 roles/dokuwiki/files/default.conf
 create mode 100644 roles/dokuwiki/files/userstyle.css
 create mode 100644 roles/dokuwiki/handlers/main.yml
 create mode 100644 roles/dokuwiki/tasks/main.yml
 create mode 100644 roles/dokuwiki/tasks/nginx.yml
 create mode 100644 roles/dokuwiki/tasks/php.yml
 create mode 100644 roles/dokuwiki/templates/doku.fri.uni-lj.si.conf.j2

diff --git a/inventory.yml b/inventory.yml
index 002535c..8fee281 100644
--- a/inventory.yml
+++ b/inventory.yml
@@ -12,4 +12,4 @@ query_filters:
   - tenant: 'fri-it'
   - role: 'compute-node'
   - role: 'storage-node'
-  - role: 'switch'
+  - role: 'server'
diff --git a/roles/dokuwiki/files/default.conf b/roles/dokuwiki/files/default.conf
new file mode 100644
index 0000000..db3420b
--- /dev/null
+++ b/roles/dokuwiki/files/default.conf
@@ -0,0 +1,11 @@
+# Handle .well-known for all domains.
+server {
+	listen 80 default_server;
+	listen [::]:80 default_server;
+	location /.well-known/ {
+		alias /srv/http/.well-known/;
+	}
+	location / {
+		return 301 https://$host$request_uri;
+	}
+}
diff --git a/roles/dokuwiki/files/userstyle.css b/roles/dokuwiki/files/userstyle.css
new file mode 100644
index 0000000..01b3ca1
--- /dev/null
+++ b/roles/dokuwiki/files/userstyle.css
@@ -0,0 +1,33 @@
+a.interwiki,
+a.urlextern,
+a.windows {
+	padding-left: 0 !important;
+	background: none !important;
+}
+
+.dokuwiki div.page {
+	padding: 2em 2.5em;
+}
+
+.page h2,
+.page h3,
+.page h4 {
+	margin: 1em 0 0.5em;
+}
+
+.page p, .page ol, .page ul {
+	line-height: 1.5em;
+	margin: 0 0 0.5em;
+}
+
+.page code,
+.page pre {
+	font-size: 0.9em;
+}
+
+.page pre {
+	border-color: #eee;
+	box-shadow: none;
+	margin: 0 1em 0.5em;
+	padding: 0.25em 0.5em;
+}
diff --git a/roles/dokuwiki/handlers/main.yml b/roles/dokuwiki/handlers/main.yml
new file mode 100644
index 0000000..f6a6249
--- /dev/null
+++ b/roles/dokuwiki/handlers/main.yml
@@ -0,0 +1,5 @@
+- name: reload nginx
+  service:
+    name: nginx
+    state: reloaded
+  when: "'handler' not in ansible_skip_tags"
diff --git a/roles/dokuwiki/tasks/main.yml b/roles/dokuwiki/tasks/main.yml
new file mode 100644
index 0000000..6dcc862
--- /dev/null
+++ b/roles/dokuwiki/tasks/main.yml
@@ -0,0 +1,69 @@
+- name: Set dokuwiki version
+  set_fact:
+    dokuwiki_version: 2023-04-04a
+
+- name: Enable community package repo
+  lineinfile:
+    path: /etc/apk/repositories
+    regexp: '^# *(http.*/v[^/]*/community)'
+    line: '\1'
+    backrefs: yes
+  register: result
+
+- name: Update package cache
+  package:
+    update_cache: true
+  when: result.changed
+
+- name: Set up nginx
+  import_tasks: nginx.yml
+
+- name: Set up PHP
+  import_tasks: php.yml
+
+- name: Install packages
+  package:
+    name: php-openssl,php-session,php-xml
+
+- name: Get current dokuwiki version if any
+  lineinfile:
+    path: /srv/http/doku.fri.uni-lj.si/VERSION
+    search_string: '{{ dokuwiki_version }}'
+    state: absent
+  check_mode: true
+  changed_when: false
+  register: current_version
+
+- name: Install or upgrade dokuwiki
+  when: 'current_version.found|default(0) == 0'
+  block:
+  - name: Download dokuwiki tarball
+    get_url:
+      url: 'https://download.dokuwiki.org/src/dokuwiki/dokuwiki-{{ dokuwiki_version }}.tgz'
+      dest: /var/tmp/
+
+  - name: Unpack tarball
+    command: 'tar xvf dokuwiki-{{ dokuwiki_version }}.tgz'
+    args:
+      chdir: /var/tmp
+
+  - name: Copy dokuwiki files
+    copy:
+      dest: /srv/http/doku.fri.uni-lj.si/
+      src: '/var/tmp/dokuwiki-{{ dokuwiki_version }}/'
+      remote_src: true
+      owner: nginx
+      group: nginx
+
+- name: Copy user style overrides
+  copy:
+    dest: /srv/http/doku.fri.uni-lj.si/conf/
+    src: userstyle.css
+    owner: nginx
+    group: nginx
+
+- name: Create nginx site
+  template:
+    dest: /etc/nginx/http.d/doku.fri.uni-lj.si.conf
+    src: doku.fri.uni-lj.si.conf.j2
+  notify: reload nginx
diff --git a/roles/dokuwiki/tasks/nginx.yml b/roles/dokuwiki/tasks/nginx.yml
new file mode 100644
index 0000000..3378611
--- /dev/null
+++ b/roles/dokuwiki/tasks/nginx.yml
@@ -0,0 +1,42 @@
+- name: Enable community package repo
+  lineinfile:
+    path: /etc/apk/repositories
+    regexp: '^# *(http.*/v[^/]*/community)'
+    line: '\1'
+    backrefs: yes
+
+- name: Install packages
+  package:
+    name: certbot,nginx
+
+- name: Create HTTP server directories
+  file:
+    path: /srv/http/.well-known
+    recurse: true
+    state: directory
+    owner: nginx
+    group: nginx
+
+- name: Set up default HTTP server
+  copy:
+    dest: /etc/nginx/http.d
+    src: default.conf
+
+- name: Enable nginx service
+  service:
+    name: nginx
+    enabled: true
+    state: started
+
+- name: Get LE certificate
+  command:
+    cmd: certbot certonly --non-interactive --agree-tos --register-unsafely-without-email --webroot --webroot-path /srv/http -d doku.fri.uni-lj.si
+    creates: '/etc/letsencrypt/renewal/doku.fri.uni-lj.si.conf'
+
+- name: Enable certbot renewal
+  cron:
+    name: "certbot renew"
+    job: "certbot renew --quiet"
+    user: root
+    hour: "2,14"
+    minute: "18"
diff --git a/roles/dokuwiki/tasks/php.yml b/roles/dokuwiki/tasks/php.yml
new file mode 100644
index 0000000..5581670
--- /dev/null
+++ b/roles/dokuwiki/tasks/php.yml
@@ -0,0 +1,45 @@
+- name: Install packages
+  package:
+    name: acl,php,php-fpm
+
+- name: Find PHP package
+  command: apk info -e php
+  register: php_package
+  changed_when: false
+
+- name: Set PHP version
+  set_fact:
+    php_version: "{{ php_package.stdout | regex_search('[0-9.]+') }}"
+
+- name: Set PHP-FPM settings
+  lineinfile:
+    path: '/etc/php{{ php_version }}/php-fpm.d/www.conf'
+    regexp: '^;?{{ item.key }}\s*='
+    line: '{{ item.key }} = {{ item.value }}'
+  loop:
+    - key: user
+      value: nginx
+    - key: group
+      value: nginx
+    - key: listen
+      value: '/run/php-fpm.socket'
+    - key: listen.acl_users
+      value: nginx
+    - key: listen.acl_groups
+      value: nginx
+
+- name: Set PHP settings
+  lineinfile:
+    path: '/etc/php{{ php_version }}/php.ini'
+    regexp: '^{{ item.key }}\s*='
+    line: '{{ item.key }} = {{ item.value }}'
+  loop:
+    - key: upload_max_filesize
+      value: 200M
+  notify: restart php-fpm
+
+- name: Enable php-fpm service
+  service:
+    name: 'php-fpm{{ php_version }}'
+    enabled: true
+    state: started
diff --git a/roles/dokuwiki/templates/doku.fri.uni-lj.si.conf.j2 b/roles/dokuwiki/templates/doku.fri.uni-lj.si.conf.j2
new file mode 100644
index 0000000..686e6f9
--- /dev/null
+++ b/roles/dokuwiki/templates/doku.fri.uni-lj.si.conf.j2
@@ -0,0 +1,36 @@
+server {
+	listen 443 ssl http2;
+	listen [::]:443 ssl http2;
+	server_name doku.fri.uni-lj.si;
+
+	ssl_certificate /etc/letsencrypt/live/doku.fri.uni-lj.si/fullchain.pem;
+	ssl_certificate_key /etc/letsencrypt/live/doku.fri.uni-lj.si/privkey.pem;
+
+	client_max_body_size 100M;
+
+	root /srv/http/doku.fri.uni-lj.si;
+	index index.php;
+
+	location ~ /(conf/|bin/|inc/|vendor/|install.php) { deny all; }
+	location ~ ^/data/ { internal; }
+	location ~ ^/lib.*\.(js|css|gif|png|ico|jpg|jpeg)$ { expires 365d; }
+
+	location / { try_files $uri $uri/ @dokuwiki; }
+
+	location @dokuwiki {
+		rewrite ^/_media/(.*) /lib/exe/fetch.php?media=$1 last;
+		rewrite ^/_detail/(.*) /lib/exe/detail.php?media=$1 last;
+		rewrite ^/_export/([^/]+)/(.*) /doku.php?do=export_$1&id=$2 last;
+		rewrite ^/(.*) /doku.php?id=$1&$args last;
+	}
+
+	location ~ \.php$ {
+		try_files $uri $uri/ /doku.php;
+
+		include fastcgi_params;
+		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+		fastcgi_param REDIRECT_STATUS 200;
+		fastcgi_param HTTPS on;
+		fastcgi_pass unix:/run/php-fpm.socket;
+	}
+}
diff --git a/setup.yml b/setup.yml
index 2296139..576fcbb 100644
--- a/setup.yml
+++ b/setup.yml
@@ -6,3 +6,7 @@
 - hosts: proxmox-rc-next-*
   roles:
     - proxmox
+
+- hosts: doku
+  roles:
+    - dokuwiki