Merge pull request 'Docker update documentation, php, and modify gen_config.php' (#8) from docker_update_php into master

Reviewed-on: #8

Dockerfile

@@ -2,7 +2,7 @@ FROM alpine:latest
 WORKDIR /var/www/html/4get
 
 RUN apk update && apk upgrade
-RUN apk add php apache2-ssl php82-fileinfo php82-openssl php82-iconv php82-common php82-dom php82-curl curl php82-pecl-apcu php82-apache2 imagemagick php82-pecl-imagick php-mbstring imagemagick-webp imagemagick-jpeg
+RUN apk add php apache2-ssl php83-fileinfo php83-openssl php83-iconv php83-common php83-dom php83-curl curl php83-pecl-apcu php83-apache2 imagemagick php83-pecl-imagick php-mbstring imagemagick-webp imagemagick-jpeg
 
 COPY ./docker/apache/ /etc/apache2/
 COPY . .
@@ -12,4 +12,6 @@ RUN chmod 777 /var/www/html/4get/icons
 EXPOSE 80
 EXPOSE 443
 
+ENV FOURGET_PROTO=http
+
 CMD  ["./docker/docker-entrypoint.sh"]

docker/docker-entrypoint.sh

@@ -1,14 +1,23 @@
 #!/bin/sh
 set -e
-if [ ! -f /etc/4get/certs/fullchain.pem ] || [ ! -f /etc/4get/certs/privkey.pem ]; then
-        echo "Using http configuration"
-        cp /etc/apache2/http.conf /etc/apache2/httpd.conf
-else
+
+# remove quotes from variable if present
+FOURGET_PROTO="${FOURGET_PROTO%\"}"
+FOURGET_PROTO="${FOURGET_PROTO#\"}"
+
+# make lowercase
+FOURGET_PROTO=`echo $FOURGET_PROTO | awk '{print tolower($0)}'`
+
+
+if [ "$FOURGET_PROTO" = "https" ] || [ -f /etc/4get/certs/fullchain.pem ] || [ -f /etc/4get/certs/privkey.pem ]; then
         echo "Using https configuration"
         cp /etc/apache2/https.conf /etc/apache2/httpd.conf
+else
+        echo "Using http configuration"
+        cp /etc/apache2/http.conf /etc/apache2/httpd.conf
 fi
 
-php82 ./docker/gen_config.php
+php ./docker/gen_config.php
 
 
 echo "4get is running"

docker/gen_config.php

@@ -3,19 +3,21 @@
 include "/var/www/html/4get/data/config.php";
 
 $refl = new ReflectionClass('config');
-$config = ($refl->getConstants());
+$from_config = ($refl->getConstants());
+$from_env = array();
 
 $env = getenv();
 $fourget_env = array_filter($env, function($v, $k) {
         return str_starts_with($k, "FOURGET");
 }, ARRAY_FILTER_USE_BOTH);
 
-
 foreach($fourget_env as $key => $val)  {
         $target_key = preg_replace('/^FOURGET_/', '', $key);
-        $config[$target_key] = trim($val, '\'"');
+        $from_env[$target_key] = trim($val, '\'"');
 };
 
+$merged_config = array_merge($from_config, $from_env);
+
 function type_to_string($n) {
         $type = gettype($n);
         if ($type === "NULL") {
@@ -52,26 +54,31 @@ function detect_captcha_dirs() {
 }
 
 
-$special_keys = ["CAPTCHA_DATASET", "INSTANCES"];
+$special_keys = ["PROTO", "CAPTCHA_DATASET"];
 
 $output = "<?php\n // This file was generated by docker/gen_config.php\n";
 
 $output = $output . "class config {\n";
-foreach(($config) as $key => $val){
+foreach(($merged_config) as $key => $val){
         if(!in_array($key, $special_keys)) {
-$output = $output . "\tconst " . $key . " = " . type_to_string($val) . ";\n";
-continue;
+            
+            // conversion between arrays and comma separated env value. 
+            // If original type of field is array and there is a type mismatch such as when a comma separted string is passed, 
+            // then split on comma if string and not numeric
+            if(gettype($from_config[$key]) != gettype($val) && !is_numeric($val)) {
+                $data = gettype($val) === "string" ? explode(",", $val) : $val;
+                $output = $output . "\tconst " . $key . " = " . type_to_string($data) . ";\n";
+            } else {
+                $output = $output . "\tconst " . $key . " = " . type_to_string($val) . ";\n";
+            }
+
+            continue;
         }
 
 
         if($key === "CAPTCHA_DATASET") {
                 $output = $output . "\tconst " . $key . " = " . type_to_string(detect_captcha_dirs()) . ";\n";
         }
-        if($key === "INSTANCES") {
-                $instances_list = gettype($val) === "string" ? explode(",", $val) : $val;
-                $output = $output . "\tconst " . $key . " = " . type_to_string($instances_list) . ";\n";
-        }
-
 }
 
 $output = $output . "}\n";

docs/docker.md

@@ -1,50 +1,152 @@
-# Install guide for Docker
+#### Install guide for Docker
+
+When using docker container any environment variables prefixed with `FOURGET_` will be added to the generated config located at `/var/www/html/4get/data/config.php`
+
+When lists of data is expected in [data/config.php](../data/config.php), such as `INSTANCES`, you can pass in a comma separated string via environment variable. 
+
+Example:
+`FOURGET_INSTANCES="https://4get.ca,https://domain.tld"`
+
+#### Special environment variables
+
+| Name              | value                          | Example                              |
+| -                 | -                              | -                                    |
+| FOURGET_PROTO     | "http" or "https"              | "https"                              |
+
+
+#### Important directories
+
+| Mountpoint                      | Description               |
+| -                               | -                         |
+| /etc/4get/certs                 | SSL certificate directory |
+| /var/www/html/4get/banner       | Custom Banners directory  |
+| /var/www/html/4get/data/captcha | Captcha dataset           |
+
+
+the certificate directory `/etc/4get/certs` expects files named `fullchain.pem` and `privkey.pem`
+
+The captcha dataset should have a subdirectory for each category. In each category, images should be named from 1.png to X.png, and be 100x100 in size.
+
+example directory structure:
 
 ```
-docker run -d -p 80:80 -e FOURGET_SERVER_NAME="4get.ca" luuul/4get:latest
+captcha/
+  birds/
+    1.png
+    2.png
+    3.png
+ anime/
+    1.png
+    2.png
+```
+
+For more information on configuration view [data/config.php](../data/config.php)
+
+#### Usage
+
+You can start 4get with
+
+```
+docker run -d -p 80:80 -e FOURGET_SERVER_NAME="4get.ca" -e FOURGET_PROTO="http" luuul/4get:latest
 ```
 
 ...Or with SSL:
-```
-docker run -d -p 443:443 -v /etc/letsencrypt/live/domain.tld:/etc/4get/certs -e FOURGET_SERVER_NAME="4get.ca" luuul/4get:latest
-```
-
-if the certificate files are not mounted to /etc/4get/certs the service listens to port 80
-
-the certificate directory expects files named `fullchain.pem` and `privkey.pem`
-
-# Install using Docker Compose 
-
-copy `docker-compose.yaml`
-
-to serve custom banners create a directory named `banners` for example with images and mount to `/var/www/html/4get/banner`
-
-to serve captcha images create a directory named `captchas` for example containing subfolders with images and mount to `/var/www/html/4get/data/captcha`
-
-any environment variables prefixed with `FOURGET_` will be added to the generated config
-
-the entrypoint will automatically set the `CAPTCHA_DATASET` value for you based on directory names and number of files in each
-
-to set `INSTANCES` pass a comma separated string of urls (FOURGET_INSTANCES = "https://4get.ca,https://domain.tld")
 
 ```
+docker run -d -p 443:443 -e FOURGET_SERVER_NAME="4get.ca" -e FOURGET_PROTO="https" -v /etc/letsencrypt/live/domain.tld:/etc/4get/certs  luuul/4get:latest
+```
+
+
+#### With Docker Compose
+
+Replace relevant values and start with `docker compose up -d`
+
+##### HTTP
+
+```
+# docker-compose.yaml
 version: "3.7"
 
 services:
   fourget:
     image: luuul/4get:latest
-    restart: always
+    restart: unless-stopped
     environment:
+      - FOURGET_VERSION=6
+      - FOURGET_PROTO=http
+      - FOURGET_SERVER_NAME=4get.ca
+
+    ports:
+      - "80:80"
+```
+
+##### HTTPS
+
+```
+# docker-compose.yaml
+version: "3.7"
+
+services:
+  fourget:
+    image: luuul/4get:latest
+    restart: unless-stopped
+    environment:
+      - FOURGET_VERSION=6
+      - FOURGET_PROTO=https
       - FOURGET_SERVER_NAME=4get.ca
 
     ports:
       - "80:80"
       - "443:443"
-
+      
     volumes:
       - /etc/letsencrypt/live/domain.tld:/etc/4get/certs
-      - ./banners:/var/www/html/4get/banner
-      - ./captchas:/var/www/html/4get/data/captcha
 ```
 
-Replace relevant values and start with `docker compose up -d`
+##### Captcha Enabled
+
+Set `FOURGET_BOT_PROTECTION=1` and mount a directory containing captcha files to `/var/www/html/4get/data/captcha`
+
+
+```
+# docker-compose.yaml
+version: "3.7"
+
+services:
+  fourget:
+    image: luuul/4get:latest
+    restart: unless-stopped
+    environment:
+      - FOURGET_VERSION=6
+      - FOURGET_PROTO=http
+      - FOURGET_SERVER_NAME=4get.ca
+      - FOURGET_BOT_PROTECTION=1
+
+    ports:
+      - "80:80"
+      
+    volumes:
+      - ./captcha:/var/www/html/4get/data/captcha
+```
+
+##### Custom Banners
+
+```
+# docker-compose.yaml
+version: "3.7"
+
+services:
+  fourget:
+    image: luuul/4get:latest
+    restart: unless-stopped
+    environment:
+      - FOURGET_VERSION=6
+      - FOURGET_PROTO=http
+      - FOURGET_SERVER_NAME=4get.ca
+
+    ports:
+      - "80:80"
+      
+    volumes:
+      - ./banners:/var/www/html/4get/banner
+```