WP/WC: Set file permissions on the host

set_permissions.sh

#!/bin/bash

# This script updates file ownership and permissions for a WordPress installation
# located in the specified base directory. It ensures that the directories and files
# are owned by 'www-data', making them accessible for a WordPress instance running
# as 'www-data' inside a Docker container, while allowing the 'wc' user to edit them.
#
# The script performs the following actions:
# 1. Changes ownership of plugins, themes, uploads, wp-config.php, and .htaccess to 'www-data'.
# 2. Adds the 'wc' user to the 'www-data' group for edit permissions.
# 3. Sets directory permissions to 775 (read, write, execute for owner/group).
# 4. Sets file permissions to 664 (read, write for owner/group, read for others).
# 5. Handles errors if the specified directory does not exist or changing directories fails.

# Define variables
USER_NAME="wc"
BASE_DIR="."

# Verify that the script is run as root or with sudo
if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root or with sudo" 
   exit 1
fi

# Change to the base directory
# If changing the directory fails, exit the script with an error message.
cd "$BASE_DIR" || { echo "Failed to change directory to $BASE_DIR. Exiting."; exit 1; }

# Change ownership of specific directories and files to www-data:www-data
echo "Changing ownership to www-data:www-data in $BASE_DIR..."
chown -R www-data:www-data ./plugins ./themes ./uploads
chown www-data:www-data ./wp-config.php ./htaccess

# Add the user to the www-data group for permission access
echo "Adding '$USER_NAME' to 'www-data' group..."
usermod -aG www-data "$USER_NAME"

# Set permissions for directories (rwx for owner and group, rx for others)
echo "Setting directory permissions to 775..."
find ./plugins ./themes ./uploads -type d -exec chmod 775 {} \;

# Set permissions for files (rw for owner and group, r for others)
echo "Setting file permissions to 664..."
find ./plugins ./themes ./uploads -type f -exec chmod 664 {} \;
chmod 664 ./wp-config.php
chmod 664 ./htaccess

# Feedback to the user
echo "Ownership and permissions updated successfully in $BASE_DIR. '$USER_NAME' can now edit the specified files and directories."