Makefile

# Secure Boot and Kernel Integrity Verification System
# Makefile - Build System
#
# This Makefile compiles all components of the secure boot system.
# Requires: GCC, OpenSSL development libraries
#
# Author: OS Security Project

# Compiler and flags
CC = gcc
CFLAGS = -Wall -Wextra -O2 -g
LDFLAGS = -lssl -lcrypto

# Directories
SRC_DIR = src
BUILD_DIR = build
BIN_DIR = bin

# Source files
CRYPTO_SRC = $(SRC_DIR)/crypto/crypto_utils.c
LOGGER_SRC = $(SRC_DIR)/logger/security_logger.c
SIGNER_SRC = $(SRC_DIR)/signing/kernel_signer.c
VERIFIER_SRC = $(SRC_DIR)/bootloader/boot_verifier.c
INTEGRITY_SRC = $(SRC_DIR)/bootloader/integrity_check.c

# Object files
CRYPTO_OBJ = $(BUILD_DIR)/crypto_utils.o
LOGGER_OBJ = $(BUILD_DIR)/security_logger.o
SIGNER_OBJ = $(BUILD_DIR)/kernel_signer.o
VERIFIER_OBJ = $(BUILD_DIR)/boot_verifier.o
INTEGRITY_OBJ = $(BUILD_DIR)/integrity_check.o

# Output binaries
SIGNER_BIN = $(BIN_DIR)/kernel_signer
VERIFIER_BIN = $(BIN_DIR)/boot_verifier

# Header dependencies
CRYPTO_HEADERS = $(SRC_DIR)/crypto/crypto_utils.h
LOGGER_HEADERS = $(SRC_DIR)/logger/security_logger.h
INTEGRITY_HEADERS = $(SRC_DIR)/bootloader/integrity_check.h

# =============================================================================
# DEFAULT TARGET
# =============================================================================

.PHONY: all clean install help test

all: dirs $(SIGNER_BIN) $(VERIFIER_BIN)
	@echo ""
	@echo "╔══════════════════════════════════════════════════════════════╗"
	@echo "║                    BUILD SUCCESSFUL                          ║"
	@echo "╚══════════════════════════════════════════════════════════════╝"
	@echo ""
	@echo "Binaries created:"
	@echo "  $(SIGNER_BIN)   - Kernel signing tool"
	@echo "  $(VERIFIER_BIN) - Boot verification module"
	@echo ""
	@echo "Run 'make help' for usage information."
	@echo ""

# =============================================================================
# DIRECTORY CREATION
# =============================================================================

dirs:
	@mkdir -p $(BUILD_DIR)
	@mkdir -p $(BIN_DIR)
	@mkdir -p keys
	@mkdir -p logs

# =============================================================================
# OBJECT FILE COMPILATION
# =============================================================================

$(CRYPTO_OBJ): $(CRYPTO_SRC) $(CRYPTO_HEADERS)
	@echo "[CC] Compiling crypto_utils.c..."
	$(CC) $(CFLAGS) -c $< -o $@

$(LOGGER_OBJ): $(LOGGER_SRC) $(LOGGER_HEADERS)
	@echo "[CC] Compiling security_logger.c..."
	$(CC) $(CFLAGS) -c $< -o $@

$(INTEGRITY_OBJ): $(INTEGRITY_SRC) $(INTEGRITY_HEADERS) $(LOGGER_HEADERS)
	@echo "[CC] Compiling integrity_check.c..."
	$(CC) $(CFLAGS) -c $< -o $@ -I$(SRC_DIR)/logger

$(SIGNER_OBJ): $(SIGNER_SRC) $(CRYPTO_HEADERS) $(LOGGER_HEADERS)
	@echo "[CC] Compiling kernel_signer.c..."
	$(CC) $(CFLAGS) -c $< -o $@ -I$(SRC_DIR)/crypto -I$(SRC_DIR)/logger

$(VERIFIER_OBJ): $(VERIFIER_SRC) $(CRYPTO_HEADERS) $(LOGGER_HEADERS) $(INTEGRITY_HEADERS)
	@echo "[CC] Compiling boot_verifier.c..."
	$(CC) $(CFLAGS) -c $< -o $@ -I$(SRC_DIR)/crypto -I$(SRC_DIR)/logger -I$(SRC_DIR)/bootloader

# =============================================================================
# BINARY LINKING
# =============================================================================

$(SIGNER_BIN): $(SIGNER_OBJ) $(CRYPTO_OBJ) $(LOGGER_OBJ)
	@echo "[LD] Linking kernel_signer..."
	$(CC) $^ -o $@ $(LDFLAGS)

$(VERIFIER_BIN): $(VERIFIER_OBJ) $(CRYPTO_OBJ) $(LOGGER_OBJ) $(INTEGRITY_OBJ)
	@echo "[LD] Linking boot_verifier..."
	$(CC) $^ -o $@ $(LDFLAGS)

# =============================================================================
# UTILITY TARGETS
# =============================================================================

clean:
	@echo "Cleaning build artifacts..."
	rm -rf $(BUILD_DIR) $(BIN_DIR)
	rm -f keys/*.pem
	rm -f *.sig
	rm -f logs/*.log
	@echo "Clean complete."

install: all
	@echo "Installing to /usr/local/bin..."
	cp $(SIGNER_BIN) /usr/local/bin/
	cp $(VERIFIER_BIN) /usr/local/bin/
	@echo "Installation complete."

# =============================================================================
# TESTING TARGETS
# =============================================================================

test: all
	@echo ""
	@echo "Running test suite..."
	@chmod +x tests/test_suite.sh
	./tests/test_suite.sh

demo: all
	@echo ""
	@echo "Running secure boot demonstration..."
	@chmod +x scripts/demo.sh
	./scripts/demo.sh

genkeys: all
	@echo ""
	@echo "Generating RSA key pair..."
	$(SIGNER_BIN) genkeys keys/private_key.pem keys/public_key.pem

benchmark: all
	@echo ""
	@echo "Running performance benchmarks..."
	@chmod +x scripts/run_benchmark.sh
	./scripts/run_benchmark.sh

report: all
	@echo ""
	@echo "Generating HTML test report..."
	@chmod +x scripts/generate_html_report.sh
	./scripts/generate_html_report.sh

recovery:
	@echo ""
	@echo "Starting recovery mode..."
	@chmod +x scripts/recovery_mode.sh
	./scripts/recovery_mode.sh

attack: all
	@echo ""
	@echo "Running attack simulation..."
	@chmod +x tests/simulate_attack.sh
	./tests/simulate_attack.sh

# =============================================================================
# HELP
# =============================================================================

help:
	@echo ""
	@echo "╔══════════════════════════════════════════════════════════════╗"
	@echo "║           SECURE BOOT BUILD SYSTEM - HELP                    ║"
	@echo "╚══════════════════════════════════════════════════════════════╝"
	@echo ""
	@echo "Available targets:"
	@echo ""
	@echo "  make all       - Build all components (default)"
	@echo "  make clean     - Remove all build artifacts"
	@echo "  make install   - Install binaries to /usr/local/bin"
	@echo "  make test      - Run automated test suite"
	@echo "  make demo      - Run secure boot demonstration"
	@echo "  make genkeys   - Generate RSA key pair"
	@echo "  make attack    - Run attack simulation"
	@echo "  make benchmark - Run performance benchmarks"
	@echo "  make report    - Generate HTML test report"
	@echo "  make recovery  - Start recovery mode"
	@echo "  make help      - Show this help message"
	@echo ""
	@echo "Requirements:"
	@echo "  - GCC compiler"
	@echo "  - OpenSSL development libraries (libssl-dev)"
	@echo ""
	@echo "Quick Start:"
	@echo "  1. make all"
	@echo "  2. make genkeys"
	@echo "  3. make demo"
	@echo ""