#!/bin/bash # Pilipili Server - HTTP Request Handler for socat # Version: 1.0.0 # Based on bashttpd approach - reads HTTP request from stdin, writes response to stdout # Configuration from environment variables PORT=${PORT:-8080} SERVE_DIR=${SERVE_DIR:-"./public"} VERBOSE=${VERBOSE:-false} SERVER_NAME=${SERVER_NAME:-"Pilipili-Server/1.0"} # Function to log messages to stderr (so they don't interfere with HTTP response) log() { local level=$1 shift local message="$*" local timestamp=$(date '+%Y-%m-%d %H:%M:%S') if [ "$VERBOSE" = true ] || [ "$level" = "ERROR" ]; then echo "[$level] $timestamp - $message" >&2 fi } # Function to get MIME type based on file extension get_mime_type() { local file="$1" local extension="${file##*.}" case "$extension" in html|htm) echo "text/html" ;; css) echo "text/css" ;; js) echo "application/javascript" ;; json) echo "application/json" ;; txt) echo "text/plain" ;; png) echo "image/png" ;; jpg|jpeg) echo "image/jpeg" ;; gif) echo "image/gif" ;; svg) echo "image/svg+xml" ;; ico) echo "image/x-icon" ;; *) echo "application/octet-stream" ;; esac } # Function to send HTTP response send_response() { local status="$1" local content_type="$2" local content="$3" # Calculate content length in bytes local content_length=${#content} # Send HTTP response headers printf "HTTP/1.1 %s\r\n" "$status" printf "Server: %s\r\n" "$SERVER_NAME" printf "Date: %s\r\n" "$(date -u '+%a, %d %b %Y %H:%M:%S GMT')" printf "Content-Type: %s\r\n" "$content_type" printf "Content-Length: %d\r\n" "$content_length" printf "Connection: close\r\n" printf "\r\n" # Send content (use printf to avoid adding newline) printf "%s" "$content" } # Function to send 404 error send_404() { local path="$1" local content=" 404 Not Found - Pilipili Server
🌶️

404 Not Found

The requested file $path was not found on this server.

← Back to Home

$SERVER_NAME
" send_response "404 Not Found" "text/html" "$content" } # Main HTTP request handler # Reads HTTP request from stdin and sends response to stdout main() { local request_line method path protocol # Read the HTTP request line read -r request_line || { log "ERROR" "Failed to read request line" return 1 } # Remove carriage return request_line=${request_line%$'\r'} log "DEBUG" "Request line: $request_line" # Skip all HTTP headers until we reach the empty line while read -r line; do line=${line%$'\r'} [ -z "$line" ] && break log "DEBUG" "Header: $line" done # Parse the request line read -r method path protocol <<< "$request_line" # Validate request method if [ "$method" != "GET" ]; then log "WARN" "Unsupported method: $method" send_response "405 Method Not Allowed" "text/plain" "Method Not Allowed" return fi # Clean and validate the path path=${path%%\?*} # Remove query parameters # Security: prevent directory traversal if [[ "$path" == *".."* ]]; then log "WARN" "Directory traversal attempt blocked: $path" send_404 "$path" return fi # Default to index.html for root path if [ "$path" = "/" ]; then path="/index.html" fi # Build full file path local file_path="$SERVE_DIR$path" log "INFO" "$method $path" # Check if file exists and is readable if [ -f "$file_path" ] && [ -r "$file_path" ]; then local mime_type mime_type=$(get_mime_type "$file_path") # Read file content local content if content=$(cat "$file_path" 2>/dev/null); then send_response "200 OK" "$mime_type" "$content" log "INFO" "Served: $file_path ($mime_type, ${#content} bytes)" else log "ERROR" "Failed to read file: $file_path" send_404 "$path" fi else log "WARN" "File not found: $file_path" send_404 "$path" fi } # Run the main function main "$@"