add headers to embed nextcloud in frame on external site

This introduces new env variables to configure nextloud to be embedded via
iframe on an external site.
Setting X_FRAME_OPTIONS_ENABLED=1 will configure nginx and nextcloud to
set X-Frame-Options and CSP headers to allow the domain configured in
X_FRAME_OPTIONS_ALLOW_FROM.

.drone.yml

@@ -11,17 +11,11 @@ steps:
       purge: true
       deploy_key:
         from_secret: drone_ssh_swarm_test
-      networks:
-        - proxy
     environment:
       DOMAIN: nextcloud.swarm-test.autonomic.zone
       STACK_NAME: nextcloud
       LETS_ENCRYPT_ENV: production
       ADMIN_USER: foobar
-      FPM_TUNE_VERSION: v1
-      NGINX_CONF_VERSION: v1
-      MY_CNF_VERSION: v1
-      ENTRYPOINT_VERSION: v1
       SECRET_DB_PASSWORD_VERSION: v1
       SECRET_DB_ROOT_PASSWORD_VERSION: v1
       SECRET_ADMIN_PASSWORD_VERSION: v1

.env.sample

@@ -19,5 +19,3 @@ EXTRA_VOLUME=/dev/null:/tmp/.dummy
 
 # X_FRAME_OPTIONS_ENABLED=1
 # X_FRAME_OPTIONS_ALLOW_FROM=embedding-site.example.org
-# APPS="calendar sociallogin onlyoffice"
-

abra.sh

@@ -1,38 +1,106 @@
-#!/bin/bash
-
 export FPM_TUNE_VERSION=v4
-export NGINX_CONF_VERSION=v4
+export NGINX_CONF_VERSION=v3
 export MY_CNF_VERSION=v4
-export ENTRYPOINT_VERSION=v2
+export ENTRYPOINT_VERSION=v1
 
-run_occ(){
-    su -p www-data -s /bin/sh -c "/var/www/html/occ $@"
+NC_APP_DIR="app:/var/www/html"
+
+sub_occ(){
+  # shellcheck disable=SC2034
+  abra__service_="app"
+  # shellcheck disable=SC2034
+  abra___user="www-data"
+  sub_app_run php /var/www/html/occ "$@"
 }
 
-install_apps(){
-    install_apps="$@"
-    if [ -z "$install_apps" ]
-    then
-        install_apps=$APPS
-    fi
-    for app in $install_apps
-    do
-        run_occ "app:install $app"
-    done
+_backup_app() {
+  # Copied _abra_backup_dir to make UX better on restore and backup
+  {
+    abra__src_="$1"
+    abra__dst_="-"
   }
 
-set_app_config(){
-    APP=$1
-    KEY=$2
-    VALUE=$3
-    run_occ "config:app:set $APP $KEY --value $VALUE"
+  # shellcheck disable=SC2154
+  FILENAME="$(basename "$1").tar"
+
+  debug "Copying '$1' to '$FILENAME'"
+
+  silence
+  mkdir -p /tmp/abra
+  sub_app_cp > /tmp/abra/$FILENAME
+  unsilence
 }
 
-install_bbb(){
-    URL=$1 # https://talk.example.org/bigbluebutton/ (trailing slash!)
-    SECRET=$2 # bbb secret key
-    install_apps bbb
-    set_app_config bbb app.navigation true
-    set_app_config bbb api.url "$URL"
-    set_app_config bbb api.secret "$SECRET"
+next_maintenance_on() {
+  silence
+  sub_occ maintenance:mode --on > /dev/null
+  unsilence
+  debug "Nextcloud maintenance mode enabled"
 }
+
+next_maintenance_off() {
+  silence
+  sub_occ maintenance:mode --off > /dev/null
+  unsilence
+  debug "Nextcloud maintenance mode disabled"
+}
+
+abra_backup_app() {
+  # shellcheck disable=SC2154
+  ARK_FILENAME="$ABRA_BACKUP_DIR/${abra__app_}_app_$(date +%F).tar.gz"
+  # Cant be FILENAME as that gets changed by something
+  next_maintenance_on
+  _backup_app $NC_APP_DIR/config
+  _backup_app $NC_APP_DIR/data
+  _backup_app $NC_APP_DIR/themes
+  # Combine archives
+  tar -Af /tmp/abra/config.tar /tmp/abra/data.tar
+  tar -Af /tmp/abra/config.tar /tmp/abra/themes.tar
+  gzip /tmp/abra/config.tar -c > "$ARK_FILENAME"
+  rm /tmp/abra/*.tar
+  success "Backed up 'app' to $ARK_FILENAME"
+  next_maintenance_off
+}
+
+abra_backup_db() {
+  next_maintenance_on
+  _abra_backup_mysql "db" "nextcloud"
+  next_maintenance_off
+}
+
+abra_backup() {
+  abra_backup_app && abra_backup_db
+}
+
+
+abra_restore_app() {
+  next_maintenance_on
+  # shellcheck disable=SC2034
+  {
+  abra__src_="-"
+  abra__dst_=$NC_APP_DIR
+  }
+
+  zcat "$@" | sub_app_cp
+
+  next_maintenance_off
+  sub_occ files:scan --all > /dev/null # Needs to be run in normal mode
+  success "Restored 'app'"
+}
+
+# abra_restore_db() {
+#   warning "Restoring the database is on a existing app and not a new one has not been tested. Use with caution."
+#   next_maintenance_on
+#   # 3wc: unlike abra_backup_db, we can assume abra__service_ will be 'db' if we
+#   # got this far..
+
+#   # shellcheck disable=SC2034
+#   abra___no_tty="true"
+
+#   DB_PASSWORD=$(sub_app_run cat /run/secrets/db_password)
+
+#   zcat "$@" | sub_app_run mysql -u root -p"$DB_PASSWORD" wordpress
+
+#   success "Restored 'db'"
+#   next_maintenance_off
+# }

compose.postgres.yml

@@ -2,6 +2,7 @@ version: '3.8'
 
 services:
   app:
+    entrypoint: "sh -c 'sleep 10 && /entrypoint.sh php-fpm'" # tries to mitigate this error with postgres https://github.com/nextcloud/docker/issues/1204
     environment:
       - POSTGRES_HOST=db
       - POSTGRES_DB=nextcloud

compose.yml

@@ -1,7 +1,7 @@
 version: "3.8"
 services:
   web:
-    image: nginx:1.23.2
+    image: nginx:1.23.1
     configs:
       - source: nginx_conf
         target: /etc/nginx/nginx.conf
@@ -35,7 +35,7 @@ services:
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
 
   app:
-    image: nextcloud:25.0.1-fpm
+    image: nextcloud:24.0.3-fpm
     depends_on:
       - db
     configs:
@@ -49,7 +49,6 @@ services:
       - db_password
       - admin_password
     environment:
-      - APPS
       - X_FRAME_OPTIONS_ALLOW_FROM
       - X_FRAME_OPTIONS_ENABLED
       - DOMAIN
@@ -78,12 +77,12 @@ services:
         failure_action: rollback
         order: start-first
       labels:
-        - "coop-cloud.${STACK_NAME}.version=3.0.1+25.0.1-fpm"
+        - "coop-cloud.${STACK_NAME}.version=2.1.2+24.0.3-fpm"
         - "backupbot.backup=true"
         - "backupbot.backup.path=/var/www/html/config/,/var/www/html/data/,/var/www/html/custom_apps/"
 
   cron:
-    image: nextcloud:25.0.1-fpm
+    image: nextcloud:24.0.3-fpm
     volumes:
       - nextcloud:/var/www/html/
       - nextapps:/var/www/html/custom_apps:cached
@@ -95,7 +94,7 @@ services:
     entrypoint: /cron.sh
 
   cache:
-    image: redis:7.0.5-alpine
+    image: redis:7.0.4-alpine
     networks:
       - internal
     volumes:
@@ -107,7 +106,7 @@ secrets:
     name: ${STACK_NAME}_db_root_password_${SECRET_DB_ROOT_PASSWORD_VERSION}
   db_password:
     external: true
-    name: ${STACK_NAME}_db_password_${SECRET_DB_PASSWORD_VERSION}
+    name: ${STACK_NAME}_db_password_${SECRET_DB_ROOT_PASSWORD_VERSION}
   admin_password:
     external: true
     name: ${STACK_NAME}_admin_password_${SECRET_ADMIN_PASSWORD_VERSION}

entrypoint.sh.tmpl

@@ -1,8 +1,5 @@
 #!/bin/bash
 
-echo "Giving the db container some time to come up"; sleep 20
-# see this issue with postgres db https://github.com/nextcloud/docker/issues/1204
-
 {{ if eq (env "X_FRAME_OPTIONS_ENABLED") "1" }}
 if ! [[ $(grep {{ env "X_FRAME_OPTIONS_ALLOW_FROM" }} lib/public/AppFramework/Http/ContentSecurityPolicy.php) ]]; then
     sed -i "91 a\\\t\t'{{ env "X_FRAME_OPTIONS_ALLOW_FROM" }}', " lib/public/AppFramework/Http/ContentSecurityPolicy.php

nginx.conf.tmpl

@@ -67,7 +67,8 @@ http {
         add_header X-XSS-Protection                     "1; mode=block" always;
 
         {{ if eq (env "X_FRAME_OPTIONS_ENABLED") "1" }}
-        add_header Content-Security-Policy              "frame-ancestors {{ env "X_FRAME_OPTIONS_ALLOW_FROM" }} {{ env "DOMAIN" }}";
+        add_header X-Frame-Options                      "{{ env "X_FRAME_OPTIONS_ALLOW_FROM" }}"    always;
+        add_header Content-Security-Policy              "frame-ancestors {{ env "X_FRAME_OPTIONS_ALLOW_FROM" }}";
         {{ else }}
         add_header X-Frame-Options                      "SAMEORIGIN"    always;
         {{ end }}