Script to resolve/dump the apache2 config into a single file

apache-resolve-config.sh

#!/bin/bash

# Function to recursively process Apache config files
process_config_file() {
    local file="$1"
    local server_root="$2"
    local indent="${3:-}"
    
    # Check if file exists
    if [[ ! -f "$file" ]]; then
        echo "# Warning: File not found: $file" >&2
        return
    fi

    if [[ "$file" =~ /sites-enabled/ ]]; then
        echo "# Skipping sites-enabled file $file"
        return
    fi

    echo ""
    echo "### $file"
    
    # Process the file line by line
    while IFS= read -r line || [[ -n "$line" ]]; do
        # Check if line is comment
        if [[ "$line" =~ ^[[:space:]]*# ]]; then
            # Ignore comment line. Don't output either.
            continue
        # Check if line is empty
        elif [[ "$line" =~ ^$ ]]; then
            # Ignore empty line. Don't output either.
            continue
        # Check if line updates ServerRoot
        elif [[ "$line" =~ ^[[:space:]]*ServerRoot[[:space:]]+\"?\'?([^\"\']+)\"?\'? ]]; then
            local new_server_root="${BASH_REMATCH[1]}"
            echo "$line"
            server_root="$new_server_root"
        # Check if line contains Include or IncludeOptional
        elif [[ "$line" =~ ^[[:space:]]*(Include|IncludeOptional)[[:space:]]+(.*) ]]; then
            local directive="${BASH_REMATCH[1]}"
            local pattern="${BASH_REMATCH[2]}"
            
            # Remove quotes if present
            pattern="${pattern//\"/}"
            pattern="${pattern//\'/}"
            
            # If pattern is relative (doesn't start with /), prepend ServerRoot
            if [[ ! "$pattern" =~ ^/ ]]; then
                pattern="$server_root/$pattern"
            fi
            
            # Expand the pattern and process each matching file
            for included_file in $(ls -1 $pattern 2>/dev/null); do
                process_config_file "$included_file" "$server_root" "${indent}  "
            done
            
            # If Include and no files match, show warning
            if [[ "$directive" == "Include" ]] && ! ls -1 $pattern &>/dev/null; then
                echo "# ${indent}Warning: No files match pattern: $pattern" >&2
            fi
        else
            # Output the line as is
            echo "$line"
        fi
    done < "$file"
}

# Default ServerRoot
DEFAULT_SERVER_ROOT="/etc/apache2"

# Check if a file was provided as an argument
if [[ $# -lt 1 ]]; then
    echo "Usage: $0 <apache_config_file> [server_root]"
    echo "Default server_root is $DEFAULT_SERVER_ROOT if not specified"
    exit 1
fi

# Get the input file
CONFIG_FILE="$1"

# Get ServerRoot from arguments or use default
SERVER_ROOT="${2:-$DEFAULT_SERVER_ROOT}"

# Process the main config file
process_config_file "$CONFIG_FILE" "$SERVER_ROOT"