#!/bin/bash

# Auto-Crack Master Script
# Complete automation for CAP/PCAP cracking workflow

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
WORKSPACE_DIR="$SCRIPT_DIR"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Configuration
INPUT_DIR="$WORKSPACE_DIR/input"
CONVERTED_DIR="$WORKSPACE_DIR/converted"
WORDLIST_DIR="$WORKSPACE_DIR/wordlists"
RULES_DIR="$WORKSPACE_DIR/rules"
RESULTS_DIR="$WORKSPACE_DIR/results"
SCRIPTS_DIR="$WORKSPACE_DIR/scripts"
VERIFY_DIR="$WORKSPACE_DIR/verification"
LOG_FILE="$WORKSPACE_DIR/auto_crack.log"

# Function to print colored messages
print_info() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

print_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# Function to log messages
log_message() {
    local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
    echo "[$timestamp] $1" >> "$LOG_FILE"
    echo "$1"
}

# Function to check system requirements
check_requirements() {
    log_message "Checking system requirements..."
    
    # Check if running in WSL
    if grep -q Microsoft /proc/version 2>/dev/null; then
        print_info "Running in WSL environment"
    fi
    
    # Check for required tools
    local required_tools=("hashcat" "hcxpcapngtool" "curl" "wget" "sort" "uniq")
    local missing_tools=()
    
    for tool in "${required_tools[@]}"; do
        if ! command -v "$tool" &> /dev/null; then
            missing_tools+=("$tool")
        fi
    done
    
    if [ ${#missing_tools[@]} -gt 0 ]; then
        print_error "Missing required tools: ${missing_tools[*]}"
        print_info "Attempting to install missing tools..."
        
        # Try to install tools
        if command -v apt &> /dev/null; then
            sudo apt update && sudo apt install -y hashcat hcxtools curl wget coreutils
        else
            print_error "Cannot install tools automatically. Please install manually:"
            print_error "  sudo apt install hashcat hcxtools curl wget"
            exit 1
        fi
    fi
    
    print_success "All system requirements satisfied"
}

# Function to setup workspace
setup_workspace() {
    log_message "Setting up workspace directories..."
    
    # Create all necessary directories
    mkdir -p "$INPUT_DIR" "$CONVERTED_DIR" "$WORDLIST_DIR" "$RULES_DIR" "$RESULTS_DIR" "$SCRIPTS_DIR" "$VERIFY_DIR"
    
    # Create default rule if none exists
    if [ ! -f "$RULES_DIR/custom.rule" ]; then
        log_message "Creating default rule file..."
        cp "$WORKSPACE_DIR/rules/custom.rule" "$RULES_DIR/" 2>/dev/null || true
    fi
    
    print_success "Workspace setup complete"
}

# Function to verify handshakes
verify_handshakes() {
    log_message "Verifying handshakes in CAP/PCAP files..."
    
    # Check for capture files
    local capture_files=($(find "$INPUT_DIR" -type f \( -name "*.cap" -o -name "*.pcap" -o -name "*.pcapng" \) 2>/dev/null))
    
    if [ ${#capture_files[@]} -eq 0 ]; then
        print_warning "No CAP/PCAP files found to verify"
        return 1
    fi
    
    print_info "Found ${#capture_files[@]} capture file(s) for verification"
    
    # Run verification script if available
    if [ -f "$SCRIPTS_DIR/verify_handshakes.sh" ]; then
        chmod +x "$SCRIPTS_DIR/verify_handshakes.sh"
        print_info "Running detailed handshake verification..."
        "$SCRIPTS_DIR/verify_handshakes.sh"
        local verify_status=$?
        
        if [ $verify_status -eq 0 ]; then
            print_success "Handshake verification complete"
            return 0
        else
            print_warning "Handshake verification found issues"
            return 1
        fi
    else
        # Basic verification using hcxpcapngtool
        print_info "Running basic handshake check..."
        local valid_count=0
        
        for capture_file in "${capture_files[@]}"; do
            local filename=$(basename "$capture_file")
            
            # Quick check for handshakes
            local check_output=$(hcxpcapngtool -v "$capture_file" 2>&1 | grep -E "(EAPOL pairs|PMKID)" || true)
            
            if echo "$check_output" | grep -q "EAPOL pairs: [1-9]" || echo "$check_output" | grep -q "PMKID(s): [1-9]"; then
                print_success "$filename: Valid handshake found"
                valid_count=$((valid_count + 1))
            else
                print_warning "$filename: No valid handshake"
            fi
        done
        
        echo ""
        print_info "Handshake verification summary:"
        print_info "  Total files: ${#capture_files[@]}"
        print_info "  Files with handshakes: $valid_count"
        print_info "  Files without handshakes: $((${#capture_files[@]} - valid_count))"
        
        if [ $valid_count -eq 0 ]; then
            print_error "No valid handshakes found in any file!"
            print_info "Recapture is required before cracking can proceed."
            return 1
        elif [ $valid_count -lt ${#capture_files[@]} ]; then
            print_warning "Some files are missing handshakes."
            print_info "Consider recapturing or proceed with available handshakes."
            return 0
        else
            print_success "All files have valid handshakes!"
            return 0
        fi
    fi
}

# Function to build wordlists
build_wordlists() {
    log_message "Building wordlists..."
    
    # Check if wordlists already exist
    local wordlist_count=$(find "$WORDLIST_DIR" -name "*.txt" -type f | wc -l)
    
    if [ "$wordlist_count" -lt 3 ]; then
        print_info "Wordlists not found or insufficient. Building..."
        
        # Run the wordlist builder script if it exists
        if [ -f "$SCRIPTS_DIR/build_wordlist.sh" ]; then
            chmod +x "$SCRIPTS_DIR/build_wordlist.sh"
            cd "$WORKSPACE_DIR"
            "$SCRIPTS_DIR/build_wordlist.sh"
        else
            # Create a basic wordlist
            print_info "Creating basic wordlist..."
            cat > "$WORDLIST_DIR/basic_wordlist.txt" << 'EOF'
password
12345678
admin
welcome
qwerty
letmein
monkey
dragon
baseball
football
1234567890
password1
admin123
welcome1
qwerty123
EOF
            
            # Download rockyou if possible
            if command -v wget &> /dev/null; then
                print_info "Downloading rockyou wordlist..."
                wget -q -O "$WORDLIST_DIR/rockyou.txt.gz" "https://github.com/brannondorsey/naive-hashcat/releases/download/data/rockyou.txt.gz" 2>/dev/null || true
                if [ -f "$WORDLIST_DIR/rockyou.txt.gz" ]; then
                    gunzip -f "$WORDLIST_DIR/rockyou.txt.gz" 2>/dev/null || true
                fi
            fi
        fi
    else
        print_info "Using existing wordlists ($wordlist_count found)"
    fi
    
    # Create master wordlist by combining all wordlists
    print_info "Creating master wordlist..."
    find "$WORDLIST_DIR" -name "*.txt" -type f -exec cat {} \; | \
        sort -u | \
        grep -E '^.{8,63}$' > "$WORDLIST_DIR/master_wordlist.txt" 2>/dev/null || true
    
    local master_count=$(wc -l < "$WORDLIST_DIR/master_wordlist.txt" 2>/dev/null || echo 0)
    print_success "Wordlists built: $master_count entries in master wordlist"
}

# Function to process CAP/PCAP files
process_captures() {
    log_message "Processing CAP/PCAP files..."
    
    # Check for input files
    local input_files=$(find "$INPUT_DIR" -type f \( -name "*.cap" -o -name "*.pcap" -o -name "*.pcapng" \) | wc -l)
    
    if [ "$input_files" -eq 0 ]; then
        print_warning "No CAP/PCAP files found in $INPUT_DIR/"
        print_info "Please place your capture files in the input/ directory"
        print_info "You can add files and run this script again"
        return 1
    fi
    
    print_info "Found $input_files capture file(s)"
    
    # Convert each capture file
    local converted_count=0
    find "$INPUT_DIR" -type f \( -name "*.cap" -o -name "*.pcap" -o -name "*.pcapng" \) | while read -r capture_file; do
        local filename=$(basename "$capture_file")
        local output_file="$CONVERTED_DIR/${filename%.*}.hc22000"
        
        # Skip if already converted
        if [ -f "$output_file" ]; then
            print_info "Already converted: $filename"
            continue
        fi
        
        print_info "Converting: $filename"
        
        # Convert using hcxpcapngtool
        if hcxpcapngtool -o "$output_file" "$capture_file" 2>/dev/null; then
            print_success "Converted: $filename → $(basename "$output_file")"
            converted_count=$((converted_count + 1))
        else
            print_warning "Failed to convert: $filename (may not contain valid handshake)"
            rm -f "$output_file" 2>/dev/null || true
        fi
    done
    
    print_success "Conversion complete: $converted_count file(s) converted"
    return 0
}

# Function to run cracking
run_cracking() {
    log_message "Starting cracking process..."
    
    # Check for hash files
    local hash_files=($(find "$CONVERTED_DIR" -name "*.hc22000" -type f))
    
    if [ ${#hash_files[@]} -eq 0 ]; then
        print_error "No hash files found to crack"
        print_info "Run conversion step first or check input files"
        return 1
    fi
    
    print_info "Found ${#hash_files[@]} hash file(s) to crack"
    
    # Select wordlist
    local wordlist="$WORDLIST_DIR/master_wordlist.txt"
    if [ ! -f "$wordlist" ]; then
        wordlist=$(find "$WORDLIST_DIR" -name "*.txt" -type f | head -1)
    fi
    
    if [ ! -f "$wordlist" ]; then
        print_error "No wordlist found"
        return 1
    fi
    
    local wordlist_size=$(wc -l < "$wordlist" 2>/dev/null || echo 0)
    print_info "Using wordlist: $(basename "$wordlist") ($wordlist_size entries)"
    
    # Select rule
    local rule_file=$(find "$RULES_DIR" -name "*.rule" -type f | head -1)
    if [ ! -f "$rule_file" ]; then
        print_warning "No rule file found, using straight dictionary attack"
        rule_option=""
    else
        print_info "Using rule: $(basename "$rule_file")"
        rule_option="-r $rule_file"
    fi
    
    # Crack each hash file
    local cracked_count=0
    for hash_file in "${hash_files[@]}"; do
        local hash_filename=$(basename "$hash_file")
        local output_file="$RESULTS_DIR/${hash_filename%.*}_cracked.txt"
        
        print_info "Cracking: $hash_filename"
        
        # Run hashcat
        hashcat -m 22000 "$hash_file" "$wordlist" $rule_option \
            --force \
            --potfile-path="$RESULTS_DIR/potfile.txt" \
            --outfile="$output_file" \
            --outfile-format=2 2>&1 | tee -a "$LOG_FILE" | grep -E "(Status|Recovered|Progress)" || true
        
        # Check if cracked
        if hashcat --show -m 22000 "$hash_file" 2>/dev/null | grep -q .; then
            print_success "CRACKED: $hash_filename"
            cracked_count=$((cracked_count + 1))
            
            # Save cracked passwords
            hashcat --show -m 22000 "$hash_file" 2>/dev/null >> "$RESULTS_DIR/all_cracked.txt"
        else
            print_warning "NOT CRACKED: $hash_filename"
        fi
        
        echo ""
    done
    
    print_success "Cracking complete: $cracked_count/${#hash_files[@]} files cracked"
    
    # Show summary
    if [ -f "$RESULTS_DIR/all_cracked.txt" ]; then
        echo ""
        echo "=========================================="
        echo "CRACKED PASSWORDS SUMMARY"
        echo "=========================================="
        cat "$RESULTS_DIR/all_cracked.txt"
        echo "=========================================="
    fi
    
    return 0
}

# Function to generate report
generate_report() {
    log_message "Generating final report..."
    
    local report_file="$RESULTS_DIR/cracking_report_$(date +%Y%m%d_%H%M%S).txt"
    
    cat > "$report_file" << EOF
CAP/PCAP Cracking Report
========================
Generated: $(date)
Workspace: $WORKSPACE_DIR

INPUT FILES
-----------
$(find "$INPUT_DIR" -type f \( -name "*.cap" -o -name "*.pcap" -o -name "*.pcapng" \) -exec basename {} \; | sort | sed 's/^/  /')

CONVERTED HASH FILES
--------------------
$(find "$CONVERTED_DIR" -name "*.hc22000" -type f -exec basename {} \; | sort | sed 's/^/  /')

WORDLIST STATISTICS
-------------------
Master wordlist: $(wc -l < "$WORDLIST_DIR/master_wordlist.txt" 2>/dev/null || echo "N/A") entries
Total wordlists: $(find "$WORDLIST_DIR" -name "*.txt" -type f | wc -l) files

CRACKING RESULTS
----------------
$(if [ -f "$RESULTS_DIR/all_cracked.txt" ]; then
    echo "Cracked passwords:"
    cat "$RESULTS_DIR/all_cracked.txt" | sed 's/^/  /'
else
    echo "No passwords cracked"
fi)

HASHCAT POTFILE ENTRIES
-----------------------
$(if [ -f "$RESULTS_DIR/potfile.txt" ]; then
    cat "$RESULTS_DIR/potfile.txt" | sed 's/^/  /'
else
    echo "No potfile entries"
fi)

LOG FILE
--------
$LOG_FILE
EOF
    
    print_success "Report generated: $report_file"
    
    # Display report summary
    echo ""
    echo "=========================================="
    echo "REPORT SUMMARY"
    echo "=========================================="
    tail -20 "$report_file"
}

# Main function
main() {
    echo ""
    echo "=========================================="
    echo "AUTO-CRACK CAP/PCAP WORKFLOW"
    echo "=========================================="
    echo ""
    
    # Initialize log
    echo "Auto-Crack started at $(date)" > "$LOG_FILE"
    
    # Step 1: Check requirements
    check_requirements
    
    # Step 2: Setup workspace
    setup_workspace
    
    # Step 3: Build wordlists
    build_wordlists
    
    # Step 4: Verify handshakes
    if verify_handshakes; then
        print_info "Handshake verification passed. Proceeding with cracking..."
        
        # Step 5: Process captures
        if process_captures; then
            # Step 6: Run cracking
            run_cracking
            
            # Step 7: Generate report
            generate_report
        else
            print_warning "No capture files to process"
            print_info "Please add CAP/PCAP files to: $INPUT_DIR/"
            print_info "Then run this script again"
        fi
    else
        print_error "Handshake verification failed!"
        print_info "Some files may not contain valid handshakes."
        print_info "You can:"
        print_info "1. Recapture handshakes and try again"
        print_info "2. Run with --force to attempt cracking anyway"
        print_info "3. Check verification reports in: $VERIFY_DIR/"
    fi
    
    echo ""
    echo "=========================================="
    echo "WORKFLOW COMPLETE"
    echo "=========================================="
    echo ""
    echo "Next steps:"
    echo "1. Add more CAP/PCAP files to: $INPUT_DIR/"
    echo "2. Add custom wordlists to: $WORDLIST_DIR/"
    echo "3. Add custom rules to: $RULES_DIR/"
    echo "4. Run this script again to process new files"
    echo ""
    echo "Results available in: $RESULTS_DIR/"
    echo "Log file: $LOG_FILE"
    echo ""
}

# Run main function
main "$@"