Move certificates to Ansible Vault (#27)

group_vars/all

@@ -1,5 +1,9 @@
 base_domain: "dev.local"
-self_signed: false
+self_signed: true
+generate_cert:
+  # only copy existing if both are false
+  root: false
+  wildcard: false
 admin_email: "lukas@kucharczyk.xyz"
 server_ip: "192.168.0.104"
 data_folder: "/home/vagrant/docker-data"

playbook.yml

@@ -4,3 +4,5 @@
     - docker
     - nginx
     - jellyfin
+  vars_files:
+    - vault/certs/{{ base_domain }}.yml

roles/nginx/files/localhost.crt

@@ -1,24 +0,0 @@
------BEGIN CERTIFICATE-----
-MIID8zCCAtugAwIBAgIUPXGk144K0wqfLNwO7MK4g3ddbewwDQYJKoZIhvcNAQEL
-BQAwgYgxCzAJBgNVBAYTAkNaMRMwEQYDVQQIDApTb21lLVN0YXRlMQ8wDQYDVQQH
-DAZQcmFndWUxGDAWBgNVBAoMD0t1Y2hhcmN6eWsgTHRkLjEUMBIGA1UEAwwLKi5k
-ZXYubG9jYWwxIzAhBgkqhkiG9w0BCQEWFGx1a2FzQGt1Y2hhcmN6eWsueHl6MB4X
-DTIxMDQyNjIxMDA1OFoXDTMxMDQyNDIxMDA1OFowgYgxCzAJBgNVBAYTAkNaMRMw
-EQYDVQQIDApTb21lLVN0YXRlMQ8wDQYDVQQHDAZQcmFndWUxGDAWBgNVBAoMD0t1
-Y2hhcmN6eWsgTHRkLjEUMBIGA1UEAwwLKi5kZXYubG9jYWwxIzAhBgkqhkiG9w0B
-CQEWFGx1a2FzQGt1Y2hhcmN6eWsueHl6MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A
-MIIBCgKCAQEAx/LUqs2Z8GS9x0KZrlrdL9Ndsskw5Q8EYGNJDxqebncMAkFbYbi1
-ZhHz4mnVzLKFg6mQ7yXdnUz5DFCltEQcQHpIULPcbLyj3XXBA0Hd40Hc8+7hghJ0
-Un9tH47JwMetnlNQcvmY2XJfQ+MV92pmIh7qzvkyj1EgjkNaTdf87zYl6zYnPJjy
-MU7K3KMikPd8jECh5zhsrw9imgr86bqtWBjNkcA3F9Oauui6UhyN3/eGIa74+vx6
-nYomiMSjuN3zkN0cyxX/PFVOZZOzTbmHUIPhIN3p5pXLhqA9tc3ePpifRATzU+Sn
-ePPM++PVvSgf2PMFvTtPC/z/jKXHDB4C2QIDAQABo1MwUTAdBgNVHQ4EFgQUUa10
-hrJc8F/WBDC0rWVISN5o6C8wHwYDVR0jBBgwFoAUUa10hrJc8F/WBDC0rWVISN5o
-6C8wDwYDVR0TAQH/BAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAQEAZOwIDGg+CzK3
-/wwIE3ttv/OeU1lHu8I87dR51ixG6kGfj6+iKyP9OhA4If+mRIlMRSmigZe/ENbw
-2tVDcoIogu8zw3SLlpMzxSDiAE3Ro4O60x8IQ7+HNOvbfiVq5Hdhb39T9VvDkNv8
-k9mectnlqTNRmbw9oYDbg7zjY+5yGz264QeakF2UwJdtGlDUHVt2w83WJLY/rYAv
-uuowVf4Tqt1evIr5lfsxVbRO9oVzBnbivYZPe5hjNxOBXTti17DfedIC+y6bLavm
-VNlba18xxCDEPadyJnOSLFQlD0aoMoV7m5hZCJZEciw6X/JpX3SIpRF0MQm02RPi
-wncx4+iqGA==
------END CERTIFICATE-----

roles/nginx/files/localhost.key

@@ -1,28 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDH8tSqzZnwZL3H
-QpmuWt0v012yyTDlDwRgY0kPGp5udwwCQVthuLVmEfPiadXMsoWDqZDvJd2dTPkM
-UKW0RBxAekhQs9xsvKPddcEDQd3jQdzz7uGCEnRSf20fjsnAx62eU1By+ZjZcl9D
-4xX3amYiHurO+TKPUSCOQ1pN1/zvNiXrNic8mPIxTsrcoyKQ93yMQKHnOGyvD2Ka
-Cvzpuq1YGM2RwDcX05q66LpSHI3f94Yhrvj6/HqdiiaIxKO43fOQ3RzLFf88VU5l
-k7NNuYdQg+Eg3enmlcuGoD21zd4+mJ9EBPNT5Kd488z749W9KB/Y8wW9O08L/P+M
-pccMHgLZAgMBAAECggEANoUiNAin5wKxNLoWSZKBKV9K90sgx/SWTuoDq9ioRpqz
-bZIApt7Ep7ZRd/U/1PcArOv5lxwOF6w7ZH5BEKxZv8MYINlKS2QMkoBfRtIY/LSi
-2OjUGLGLgks4qBg5LxXDY554G0GvyesDyvEKtlIO01L218TfYnDOnbwDzaINV/RC
-W/nbyx8Z5teorU+vS5IlDaNMDSFkAMFOfQ8gNrwCaWxX2FJRUyyzM/54J4bNgGUi
-+3APpt8w4N54CrMbI6FzyQhUbAY9MRFryaLgw22v0haiM1nAE9BWpU5m20Q8Ilx8
-f1e9PVDqwTXshxx01b0Z6RrHZViyi9+XOo6QU+4xYQKBgQDrYQZ8trvV3j+1E6Eu
-rESMni+93ZbhRMbVVUDOhxU7BzfsFnvGodQms9sCaNQrexML0xH9DhWbssCDOvOm
-MWSOnxUA1yivMiYvE4FzEM5iRRyFSjE3uS3+FZ0yY3iUr1vf9G9fJrtt/ag05AF5
-ZywhmvvtiA06F9+/qZzMW4jxfQKBgQDZdy/tYZQI9PlfznI6juy/Kx310vGNN9aW
-Zzv3WRon40awiRMxUhGViiq9eD1IEzLDIXGXHdOI4E+DQUd+pn7Cr08QoWbOQk2n
-BujCDY0mevc2kDi5NASa2SUFvUXo/vCqZdfP/EA7BudYwknZp3hCV+nZt6DcW+M2
-+WLYjxTVjQKBgGs/QTpv9HQFGRgDgqyGd5FuvigPoCCyOrqXZrjzmbvUlSlwMSOX
-NtgPmRmm9A1/vXTkzkx0L2pK7yacJMoztTK6z1IbtwDko7tNcu0f2jmybcVZwcU3
-Dfq4lHCSHC37HKyVbm13c20xZ4P546YSWWxSdrmLBSPUHvHwcW43wtTtAoGBAMOb
-yAqYiRX9dQrOokU2JpJWcF6cXhaOsYEcXv5AsZxLfVxyEEd+8L44R/Wh4E2ipziK
-LqildY9bZWpFH9A2ZzMric0FwXmqfjrNpjRXCC4i0ZfM5pkAx1uaEwk0lVvdZhGA
-Bj3ZQtVVgmd+a/tR/oR+m6Tw3csZBCqA7H6rRSxJAoGBAIFd0PRdKm5+mUc575GQ
-sxVznovODCdRyOAeD9IKyCcpMo8zB9uiNDRPG/sUebnowC3v7EeCYUUHlUDtsSjc
-BZyasg71mrZElWg2mDonw/J9fcrEPGrh59wmqk49MLvzB0An/eP+gGK3RFgbijkN
-EZcByagGNGdICcaaxr+RhgcU
------END PRIVATE KEY-----

roles/nginx/files/snippets/block-exploits.conf

@@ -0,0 +1,136 @@
+## Block SQL injections
+set $block_sql_injections 0;
+
+if ($query_string ~ "union.*select.*\(") {
+	set $block_sql_injections 1;
+}
+
+if ($query_string ~ "union.*all.*select.*") {
+	set $block_sql_injections 1;
+}
+
+if ($query_string ~ "concat.*\(") {
+	set $block_sql_injections 1;
+}
+
+if ($block_sql_injections = 1) {
+	return 403;
+}
+
+## Block file injections
+set $block_file_injections 0;
+
+if ($query_string ~ "[a-zA-Z0-9_]=http://") {
+	set $block_file_injections 1;
+}
+
+if ($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+") {
+	set $block_file_injections 1;
+}
+
+if ($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+") {
+	set $block_file_injections 1;
+}
+
+if ($block_file_injections = 1) {
+	return 403;
+}
+
+## Block common exploits
+set $block_common_exploits 0;
+
+if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {
+	set $block_common_exploits 1;
+}
+
+if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {
+	set $block_common_exploits 1;
+}
+
+if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {
+	set $block_common_exploits 1;
+}
+
+if ($query_string ~ "proc/self/environ") {
+	set $block_common_exploits 1;
+}
+
+if ($query_string ~ "mosConfig_[a-zA-Z_]{1,21}(=|\%3D)") {
+	set $block_common_exploits 1;
+}
+
+if ($query_string ~ "base64_(en|de)code\(.*\)") {
+	set $block_common_exploits 1;
+}
+
+if ($block_common_exploits = 1) {
+	return 403;
+}
+
+## Block spam
+set $block_spam 0;
+
+if ($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b") {
+	set $block_spam 1;
+}
+
+if ($query_string ~ "\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b") {
+	set $block_spam 1;
+}
+
+if ($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b") {
+	set $block_spam 1;
+}
+
+if ($query_string ~ "\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b") {
+	set $block_spam 1;
+}
+
+if ($block_spam = 1) {
+	return 403;
+}
+
+## Block user agents
+set $block_user_agents 0;
+
+# Disable Akeeba Remote Control 2.5 and earlier
+if ($http_user_agent ~ "Indy Library") {
+	set $block_user_agents 1;
+}
+
+# Common bandwidth hoggers and hacking tools.
+if ($http_user_agent ~ "libwww-perl") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "GetRight") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "GetWeb!") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "Go!Zilla") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "Download Demon") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "Go-Ahead-Got-It") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "TurnitinBot") {
+	set $block_user_agents 1;
+}
+
+if ($http_user_agent ~ "GrabNet") {
+	set $block_user_agents 1;
+}
+
+if ($block_user_agents = 1) {
+	return 403;
+}

roles/nginx/files/snippets/cache-assets.conf

@@ -0,0 +1,31 @@
+location ~* ^.*\.(css|js|jpe?g|gif|png|woff|eot|ttf|svg|ico|css\.map|js\.map)$ {
+	if_modified_since off;
+
+	# use the public cache
+	proxy_cache public-cache;
+	proxy_cache_key $host$request_uri;
+
+	# ignore these headers for media
+	proxy_ignore_headers Set-Cookie Cache-Control Expires X-Accel-Expires;
+
+	# cache 200s and also 404s (not ideal but there are a few 404 images for some reason)
+	proxy_cache_valid any 30m;
+	proxy_cache_valid 404 1m;
+
+	# strip this header to avoid If-Modified-Since requests
+	proxy_hide_header Last-Modified;
+	proxy_hide_header Cache-Control;
+	proxy_hide_header Vary;
+
+	proxy_cache_bypass 0;
+	proxy_no_cache 0;
+
+	proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504 http_404;
+	proxy_connect_timeout 5s;
+	proxy_read_timeout 45s;
+
+	expires @30m;
+	access_log  off;
+
+	include conf.d/include/proxy.conf;
+}

roles/nginx/files/snippets/force-ssl.conf

@@ -0,0 +1,3 @@
+if ($scheme = "http") {
+	return 301 https://$host$request_uri;
+}

roles/nginx/files/snippets/letsencrypt-acme-challenge.conf

@@ -0,0 +1,29 @@
+# Rule for legitimate ACME Challenge requests (like /.well-known/acme-challenge/xxxxxxxxx)
+# We use ^~ here, so that we don't check other regexes (for speed-up). We actually MUST cancel
+# other regex checks, because in our other config files have regex rule that denies access to files with dotted names.
+location ^~ /.well-known/acme-challenge/ {
+	# Since this is for letsencrypt authentication of a domain and they do not give IP ranges of their infrastructure
+	# we need to open up access by turning off auth and IP ACL for this location.
+	auth_basic off;
+	allow all;
+
+	# Set correct content type. According to this:
+	# https://community.letsencrypt.org/t/using-the-webroot-domain-verification-method/1445/29
+	# Current specification requires "text/plain" or no content header at all.
+	# It seems that "text/plain" is a safe option.
+	default_type "text/plain";
+
+	# This directory must be the same as in /etc/letsencrypt/cli.ini
+	# as "webroot-path" parameter. Also don't forget to set "authenticator" parameter
+	# there to "webroot".
+	# Do NOT use alias, use root! Target directory is located here:
+	# /var/www/common/letsencrypt/.well-known/acme-challenge/
+	root /data/letsencrypt-acme-challenge;
+}
+
+# Hide /acme-challenge subdirectory and return 404 on all requests.
+# It is somewhat more secure than letting Nginx return 403.
+# Ending slash is important!
+location = /.well-known/acme-challenge/ {
+	return 404;
+}

roles/nginx/files/snippets/proxy.conf

@@ -0,0 +1,7 @@
+add_header       X-Served-By $host;
+proxy_set_header Host $host;
+proxy_set_header X-Forwarded-Scheme $scheme;
+proxy_set_header X-Forwarded-Proto  $scheme;
+proxy_set_header X-Forwarded-For    $remote_addr;
+proxy_set_header X-Real-IP          $remote_addr;
+proxy_pass       $forward_scheme://$server:$port;

roles/nginx/files/snippets/ssl-ciphers.conf

@@ -0,0 +1,9 @@
+ssl_session_timeout 5m;
+ssl_session_cache shared:SSL:50m;
+
+# intermediate configuration. tweak to your needs.
+ssl_protocols TLSv1.2 TLSv1.3;
+ssl_ciphers 'EECDH+AESGCM:AES256+EECDH:AES256+EDH:EDH+AESGCM:ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-
+ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AE
+S128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES';
+ssl_prefer_server_ciphers on;

roles/nginx/tasks/main.yml

@@ -1,11 +1,17 @@
+# If self_signed = true, in nginx/files: generate root CA (if regenereate_root_ca = true),
+# and sign a wildcard certificate. Copy certificates to /etc/ssl/.
 - name: ensure directories exist
   file:
     path: "{{ item }}"
     state: directory
     mode: '0755'
   loop:
-    - "{{ nginx_confd_folder }}"
+    - "{{ data_folder }}/nginx"
-- name: generate and install self-signed certs
+    - "{{ data_folder }}/nginx/conf.d"
+    - "{{ data_folder }}/nginx/sites-enabled"
+    - "{{ data_folder }}/nginx/sites-available"
+    - "{{ data_folder }}/nginx/snippets"
+- name: generate self-signed certs
   import_tasks: self-signed.yml
   when: self_signed
 - name: create nginx bridge network
@@ -14,6 +20,18 @@
     attachable: true
     internal: true
     state: present
+- name: copy nginx.conf
+  template:
+    src: nginx.conf.j2
+    dest: "{{ data_folder }}/nginx/nginx.conf"
+    mode: '0755'
+- name: copy snippets
+  template:
+    src: "{{ item }}"
+    dest: "{{ data_folder }}/nginx/snippets/{{ item | basename | regex_replace('.j2$', '') }}"
+    mode: '0755'
+  with_fileglob:
+    - "../templates/snippets/*.conf"
 - name: run container
   docker_container:
     name: 'nginx'
@@ -22,10 +40,13 @@
       - name: bridge
       - name: nginx-internal
     volumes:
+      - "{{ data_folder }}/nginx/conf.d:/etc/nginx/conf.d"
       - "{{ data_folder }}/nginx/nginx.conf:/etc/nginx/nginx.conf"
-      - "{{ data_folder }}/nginx/{{ base_domain }}.key:/etc/nginx/{{ base_domain }}.key"
+      - "{{ data_folder }}/nginx/sites-available:/etc/nginx/sites-available"
-      - "{{ data_folder }}/nginx/{{ base_domain }}.crt:/etc/nginx/{{ base_domain }}.crt"
+      - "{{ data_folder }}/nginx/sites-enabled:/etc/nginx/sites-enabled"
-      - "{{ nginx_confd_folder }}:/etc/nginx/conf.d"
+      - "{{ data_folder }}/nginx/snippets:/etc/nginx/snippets"
+      - "{{ data_folder }}/nginx/{{ base_domain }}.key:/etc/ssl/{{ base_domain }}.key"
+      - "{{ data_folder }}/nginx/{{ base_domain }}.crt:/etc/ssl/{{ base_domain }}.crt"
     ports:
       - "80:80"
       - "443:443"

roles/nginx/tasks/self-signed.yml

@@ -4,34 +4,39 @@
                     -new \
                     -nodes \
                     -newkey rsa:2048 \
-                    -keyout "{{ data_folder }}/nginx/rootca.key" \
+                    -keyout "{{ playbook_dir }}/roles/nginx/files/rootca.key" \
-                    -out "{{ data_folder }}/nginx/rootca.pem" \
+                    -out "{{ playbook_dir }}/roles/nginx/files/rootca.pem" \
                     -sha256 \
                     -days 3650 \
                     -subj "/C=CZ/L=Prague/CN=Homelab/emailAddress={{ admin_email }}"
+  when: generate_cert.root
 - name: generate wildcard csr
   command: openssl req \
                     -new \
                     -nodes \
                     -newkey rsa:2048 \
-                    -keyout "{{ data_folder }}/nginx/{{ base_domain }}.key" \
+                    -keyout "{{ playbook_dir }}/roles/nginx/files/{{ base_domain }}.key" \
-                    -out "{{ data_folder }}/nginx/{{ base_domain }}.csr" \
+                    -out "{{ playbook_dir }}/roles/nginx/files/{{ base_domain }}.csr" \
                     -subj "/C=CZ/L=Prague/CN=*.{{ base_domain }}/emailAddress={{ admin_email }}"
+  when: generate_cert.wildcard
 - name: sign wildcard csr with root ca
   command: openssl x509 \
                     -req \
-                    -in "{{ data_folder }}/nginx/{{ base_domain }}.csr" \
+                    -in "{{ playbook_dir }}/roles/nginx/files/{{ base_domain }}.csr" \
-                    -CA "{{ data_folder }}/nginx/rootca.pem" \
+                    -CA "{{ playbook_dir }}/roles/nginx/files/rootca.pem" \
-                    -CAkey "{{ data_folder }}/nginx/rootca.key" \
+                    -CAkey "{{ playbook_dir }}/roles/nginx/files/rootca.key" \
                     -CAcreateserial \
-                    -out "{{ data_folder }}/nginx/{{ base_domain }}.crt" \
+                    -out "{{ playbook_dir }}/roles/nginx/files/{{ base_domain }}.crt" \
                     -days 3650 \
                     -sha256
-- name: install root ca
+  when: generate_cert.wildcard
-  command: trust anchor "{{ data_folder }}/nginx/rootca.pem"
+- name: copy wildcard certificate and key from vault
-  become: yes
+  copy:
-- name: copy .conf file
+    content: "{{ item.content }}"
-  template:
+    dest: "{{ data_folder }}/nginx/{{ item.name }}"
-    src: nginx.conf.j2
+    owner: root
-    dest: "{{ data_folder }}/nginx/nginx.conf"
+    group: root
-    mode: '0755'
+    mode: '0700'
+  with_items:
+    - "{{ certificates }}"
+  no_log: true

roles/nginx/templates/nginx.conf.j2

@@ -27,7 +27,8 @@ http {
 
     #gzip  on;
     resolver 127.0.0.11 valid=30;
-    ssl_certificate /etc/nginx/{{ base_domain }}.crt;
+    {% if self_signed == true %}
-    ssl_certificate_key /etc/nginx/{{ base_domain }}.key;
+    include /etc/nginx/snippets/self-signed.conf;
+    {% endif %}
     include /etc/nginx/conf.d/*.conf;
 }

roles/nginx/templates/snippets/self-signed.conf.j2

@@ -0,0 +1,2 @@
+ssl_certificate /etc/ssl/{{ base_domain }}.crt;
+ssl_certificate_key /etc/ssl/{{ base_domain }}.key;