memscope_rs/analysis/

unsafe_ffi_tracker.rs

//! Enhanced memory tracking for unsafe Rust and FFI operations
//!
//! This module extends the basic memory tracking to handle:
//! - Unsafe Rust memory operations (std::alloc::alloc, raw pointers)
//! - FFI memory operations (malloc, free from C libraries)
//! - Cross-boundary memory transfers
//! - Safety violation detection
use crate::analysis::ffi_function_resolver::{get_global_ffi_resolver, ResolvedFfiFunction};
use crate::core::types::{AllocationInfo, TrackingError, TrackingResult};
use crate::core::{get_global_call_stack_normalizer, CallStackRef};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::sync::{Arc, Mutex, OnceLock};

/// Enhanced allocation source tracking
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AllocationSource {
    /// Safe Rust allocation (through normal allocator)
    RustSafe,
    /// Unsafe Rust allocation with location info
    UnsafeRust {
        /// Location of the unsafe block in source code
        unsafe_block_location: String,
        /// Call stack at the time of allocation
        call_stack: CallStackRef,
        /// Risk assessment for this unsafe operation
        risk_assessment: RiskAssessment,
    },
    /// FFI allocation from C library
    FfiC {
        /// Resolved FFI function information
        resolved_function: ResolvedFfiFunction,
        /// Call stack at the time of allocation
        call_stack: CallStackRef,
        /// LibC hook information
        libc_hook_info: LibCHookInfo,
    },
    /// Cross-boundary memory transfer
    CrossBoundary {
        /// Source allocation context
        from: Box<AllocationSource>,
        /// Destination allocation context
        to: Box<AllocationSource>,
        /// Timestamp when transfer occurred
        transfer_timestamp: u128,
        /// Transfer metadata
        transfer_metadata: TransferMetadata,
    },
}

/// Stack frame information for call stack tracking
#[derive(Debug, Clone, Serialize, Deserialize, Hash, PartialEq, Eq)]
pub struct StackFrame {
    /// Name of the function in this stack frame
    pub function_name: String,
    /// Source file name if available
    pub file_name: Option<String>,
    /// Line number in the source file if available
    pub line_number: Option<u32>,
    /// Whether this frame is in an unsafe block
    pub is_unsafe: bool,
}

/// Safety violation types
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum SafetyViolation {
    /// Double free detected
    DoubleFree {
        /// Call stack from the first free operation
        first_free_stack: CallStackRef,
        /// Call stack from the second free operation
        second_free_stack: CallStackRef,
        /// Timestamp when the double free was detected
        timestamp: u128,
    },
    /// Invalid free (pointer not in allocation table)
    InvalidFree {
        /// The pointer that was attempted to be freed
        attempted_pointer: usize,
        /// Call stack at the time of invalid free
        stack: CallStackRef,
        /// Timestamp when the invalid free was attempted
        timestamp: u128,
    },
    /// Potential memory leak
    PotentialLeak {
        /// Call stack from the original allocation
        allocation_stack: CallStackRef,
        /// Timestamp when the allocation occurred
        allocation_timestamp: u128,
        /// Timestamp when the leak was detected
        leak_detection_timestamp: u128,
    },
    /// Cross-boundary risk
    CrossBoundaryRisk {
        /// Risk level of the cross-boundary operation
        risk_level: RiskLevel,
        /// Description of the risk
        description: String,
        /// Call stack at the time of risk detection
        stack: CallStackRef,
    },
}

/// Risk levels for safety violations
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum RiskLevel {
    /// Low risk - minor issues that are unlikely to cause problems
    Low,
    /// Medium risk - issues that could potentially cause problems
    Medium,
    /// High risk - serious issues that are likely to cause problems
    High,
    /// Critical risk - severe issues that will almost certainly cause problems
    Critical,
}

/// Comprehensive risk assessment for unsafe operations
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RiskAssessment {
    /// Overall risk level
    pub risk_level: RiskLevel,
    /// Specific risk factors identified
    pub risk_factors: Vec<RiskFactor>,
    /// Suggested mitigation strategies
    pub mitigation_suggestions: Vec<String>,
    /// Confidence score of the assessment (0.0 to 1.0)
    pub confidence_score: f64,
    /// Timestamp when assessment was performed
    pub assessment_timestamp: u128,
}

/// Individual risk factor in an assessment
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RiskFactor {
    /// Type of risk factor
    pub factor_type: RiskFactorType,
    /// Severity score (0.0 to 10.0)
    pub severity: f64,
    /// Human-readable description
    pub description: String,
    /// Source location where risk was detected
    pub source_location: Option<String>,
}

/// Types of risk factors that can be detected
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum RiskFactorType {
    /// Raw pointer dereference without bounds checking
    RawPointerDeref,
    /// Manual memory management (alloc/dealloc)
    ManualMemoryManagement,
    /// Memory transfer across language boundaries
    CrossBoundaryTransfer,
    /// Unchecked type casting
    UncheckedCast,
    /// Potential lifetime violation
    LifetimeViolation,
    /// Use after free potential
    UseAfterFree,
    /// Buffer overflow potential
    BufferOverflow,
    /// Data race potential
    DataRace,
}

/// Information about LibC function hooks
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct LibCHookInfo {
    /// Method used to hook the function
    pub hook_method: HookMethod,
    /// Original function that was hooked
    pub original_function: String,
    /// Timestamp when hook was installed
    pub hook_timestamp: u128,
    /// Metadata about the allocation
    pub allocation_metadata: AllocationMetadata,
    /// Performance impact of the hook
    pub hook_overhead_ns: Option<u64>,
}

/// Methods for hooking LibC functions
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum HookMethod {
    /// LD_PRELOAD mechanism (Linux/macOS)
    LdPreload,
    /// Dynamic linker interposition
    DynamicLinker,
    /// Static function interposition
    StaticInterposition,
    /// Runtime patching
    RuntimePatching,
}

/// Metadata about memory allocations from LibC
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AllocationMetadata {
    /// Size requested by the caller
    pub requested_size: usize,
    /// Actual size allocated (may be larger due to alignment)
    pub actual_size: usize,
    /// Memory alignment used
    pub alignment: usize,
    /// Information about the allocator used
    pub allocator_info: String,
    /// Memory protection flags if available
    pub protection_flags: Option<MemoryProtectionFlags>,
}

/// Memory protection flags
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MemoryProtectionFlags {
    /// Memory is readable
    pub readable: bool,
    /// Memory is writable
    pub writable: bool,
    /// Memory is executable
    pub executable: bool,
    /// Memory is shared
    pub shared: bool,
}

/// Memory "passport" for tracking cross-boundary transfers
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MemoryPassport {
    /// Unique identifier for this memory passport
    pub passport_id: String,
    /// Original allocation context
    pub origin: AllocationOrigin,
    /// Journey of the memory through different contexts
    pub journey: Vec<PassportStamp>,
    /// Current ownership information
    pub current_owner: OwnershipInfo,
    /// Validity status of the passport
    pub validity_status: ValidityStatus,
    /// Security clearance level
    pub security_clearance: SecurityClearance,
}

/// Information about where memory was originally allocated
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AllocationOrigin {
    /// Context where allocation occurred (Rust/FFI)
    pub context: String,
    /// Function that performed the allocation
    pub allocator_function: String,
    /// Timestamp of original allocation
    pub timestamp: u128,
    /// Call stack at allocation time
    pub call_stack: CallStackRef,
}

/// A stamp in the memory passport journey
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PassportStamp {
    /// Timestamp of this checkpoint
    pub timestamp: u128,
    /// Location/context of the checkpoint
    pub location: String,
    /// Operation performed at this checkpoint
    pub operation: String,
    /// Authority that validated this checkpoint
    pub authority: String,
    /// Cryptographic hash for verification
    pub verification_hash: String,
}

/// Current ownership information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OwnershipInfo {
    /// Current owner context (Rust/FFI)
    pub owner_context: String,
    /// Function/module that owns the memory
    pub owner_function: String,
    /// Ownership transfer timestamp
    pub transfer_timestamp: u128,
    /// Expected lifetime of ownership
    pub expected_lifetime: Option<u128>,
}

/// Validity status of a memory passport
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ValidityStatus {
    /// Passport is valid and memory is safe to use
    Valid,
    /// Passport is expired (memory may be freed)
    Expired,
    /// Passport is revoked (memory is definitely freed)
    Revoked,
    /// Passport validity is unknown/suspicious
    Suspicious,
}

/// Security clearance levels for memory operations
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum SecurityClearance {
    /// Public memory, safe for all operations
    Public,
    /// Restricted memory, limited operations allowed
    Restricted,
    /// Confidential memory, special handling required
    Confidential,
    /// Secret memory, maximum security required
    Secret,
}

/// Metadata for cross-boundary transfers
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TransferMetadata {
    /// Reason for the transfer
    pub transfer_reason: String,
    /// Expected return context (if any)
    pub expected_return: Option<String>,
    /// Transfer validation method used
    pub validation_method: ValidationMethod,
    /// Performance impact of the transfer
    pub transfer_overhead_ns: Option<u64>,
}

/// Methods for validating cross-boundary transfers
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ValidationMethod {
    /// No validation performed
    None,
    /// Basic pointer validation
    PointerCheck,
    /// Size and bounds validation
    BoundsCheck,
    /// Full memory integrity check
    IntegrityCheck,
    /// Cryptographic validation
    CryptographicCheck,
}

/// Enhanced allocation info with unsafe/FFI tracking
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EnhancedAllocationInfo {
    /// Base allocation info
    pub base: AllocationInfo,
    /// Source of the allocation
    pub source: AllocationSource,
    /// Call stack at allocation time
    pub call_stack: CallStackRef,
    /// Cross-boundary events
    pub cross_boundary_events: Vec<BoundaryEvent>,
    /// Safety violations detected
    pub safety_violations: Vec<SafetyViolation>,
    /// Whether this allocation is currently being tracked by FFI
    pub ffi_tracked: bool,
    /// Memory passport for cross-boundary tracking
    pub memory_passport: Option<MemoryPassport>,
    /// Ownership transfer history
    pub ownership_history: Option<Vec<OwnershipTransferEvent>>,
}

/// Cross-boundary memory event
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BoundaryEvent {
    /// Type of boundary crossing event
    pub event_type: BoundaryEventType,
    /// Timestamp when the event occurred
    pub timestamp: u128,
    /// Context where the crossing originated
    pub from_context: String,
    /// Context where the crossing ended
    pub to_context: String,
    /// Call stack at the time of crossing
    pub stack: CallStackRef,
}

/// Types of boundary events
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum BoundaryEventType {
    /// Memory allocated in Rust, passed to FFI
    RustToFfi,
    /// Memory allocated in FFI, passed to Rust
    FfiToRust,
    /// Memory ownership transferred
    OwnershipTransfer,
    /// Memory shared between contexts
    SharedAccess,
}

/// Comprehensive analysis of a boundary event
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BoundaryEventAnalysis {
    /// Unique identifier for this event analysis
    pub event_id: String,
    /// Memory pointer involved in the event
    pub ptr: usize,
    /// Type of boundary event
    pub event_type: BoundaryEventType,
    /// Source context
    pub from_context: String,
    /// Destination context
    pub to_context: String,
    /// Size of memory being transferred
    pub transfer_size: usize,
    /// Timestamp of the event
    pub timestamp: u128,
    /// Risk assessment for this event
    pub risk_assessment: BoundaryRiskAssessment,
    /// Ownership chain history
    pub ownership_chain: Vec<OwnershipRecord>,
    /// Security implications
    pub security_implications: Vec<SecurityImplication>,
    /// Performance impact analysis
    pub performance_impact: PerformanceImpact,
    /// Recommended mitigation strategies
    pub mitigation_recommendations: Vec<String>,
}

/// Risk assessment for boundary transfers
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BoundaryRiskAssessment {
    /// Overall risk level
    pub overall_risk_level: RiskLevel,
    /// Numerical risk score (0.0 to 100.0)
    pub risk_score: f64,
    /// Individual risk factors
    pub risk_factors: Vec<BoundaryRiskFactor>,
    /// Confidence in the assessment (0.0 to 1.0)
    pub confidence_score: f64,
    /// When the assessment was performed
    pub assessment_timestamp: u128,
}

/// Individual risk factor for boundary transfers
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BoundaryRiskFactor {
    /// Type of risk factor
    pub factor_type: BoundaryRiskFactorType,
    /// Severity score (0.0 to 10.0)
    pub severity: f64,
    /// Human-readable description
    pub description: String,
    /// Suggested mitigation
    pub mitigation: String,
}

/// Types of boundary risk factors
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum BoundaryRiskFactorType {
    /// Transfer from Rust to foreign code
    RustToForeignTransfer,
    /// Transfer from foreign code to Rust
    ForeignToRustTransfer,
    /// Ownership transfer across boundaries
    OwnershipTransfer,
    /// Shared access across boundaries
    SharedAccess,
    /// Large memory transfer
    LargeTransfer,
    /// Frequent boundary crossings
    FrequentTransfers,
    /// Unvalidated data transfer
    UnvalidatedTransfer,
    /// Privilege boundary crossing
    PrivilegeBoundary,
}

/// Ownership transfer event
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OwnershipTransferEvent {
    /// Unique identifier for this transfer
    pub transfer_id: String,
    /// Memory pointer being transferred
    pub ptr: usize,
    /// Source context
    pub from_context: String,
    /// Destination context
    pub to_context: String,
    /// When the transfer occurred
    pub transfer_timestamp: u128,
    /// Reason for the transfer
    pub transfer_reason: String,
    /// Validation status of the transfer
    pub validation_status: OwnershipValidationStatus,
}

/// Status of ownership validation
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum OwnershipValidationStatus {
    /// Transfer is valid and safe
    Valid,
    /// Transfer is pending validation
    Pending,
    /// Transfer has validation warnings
    Warning,
    /// Transfer is invalid or unsafe
    Invalid,
    /// Transfer validation failed
    Failed,
}

/// Record in the ownership chain
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OwnershipRecord {
    /// Context that owns the memory
    pub context: String,
    /// When ownership was acquired
    pub timestamp: u128,
    /// Reason for ownership transfer
    pub transfer_reason: String,
    /// Validation status
    pub validation_status: OwnershipValidationStatus,
}

/// Security implication of boundary crossing
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityImplication {
    /// Type of security implication
    pub implication_type: SecurityImplicationType,
    /// Severity level
    pub severity: RiskLevel,
    /// Description of the implication
    pub description: String,
    /// Potential impact
    pub potential_impact: String,
    /// Recommended action
    pub recommended_action: String,
}

/// Types of security implications
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum SecurityImplicationType {
    /// Potential privilege escalation
    PrivilegeEscalation,
    /// Data exposure risk
    DataExposure,
    /// Code injection risk
    InjectionRisk,
    /// Buffer overflow risk
    BufferOverflow,
    /// Use after free risk
    UseAfterFree,
    /// Race condition risk
    RaceCondition,
    /// Information disclosure
    InformationDisclosure,
}

/// Performance impact analysis
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceImpact {
    /// Overall impact level
    pub impact_level: PerformanceImpactLevel,
    /// Estimated overhead in nanoseconds
    pub estimated_overhead_ns: u64,
    /// Memory overhead in bytes
    pub memory_overhead_bytes: usize,
    /// CPU overhead percentage
    pub cpu_overhead_percent: f64,
    /// Performance optimization recommendations
    pub recommendations: Vec<String>,
}

/// Levels of performance impact
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum PerformanceImpactLevel {
    /// Minimal performance impact
    Low,
    /// Moderate performance impact
    Medium,
    /// Significant performance impact
    High,
    /// Critical performance impact
    Critical,
}

/// Statistics for boundary events
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BoundaryEventStatistics {
    /// Total number of boundary events
    pub total_events: usize,
    /// Events grouped by type
    pub events_by_type: std::collections::HashMap<String, usize>,
    /// Risk level distribution
    pub risk_distribution: std::collections::HashMap<String, usize>,
    /// Average transfer size
    pub average_transfer_size: f64,
    /// Total volume of data transferred
    pub total_transfer_volume: usize,
    /// Most active contexts (context name, event count)
    pub most_active_contexts: Vec<(String, usize)>,
    /// Number of security incidents detected
    pub security_incidents: usize,
    /// Number of performance issues detected
    pub performance_issues: usize,
    /// When the statistics were generated
    pub analysis_timestamp: u128,
}

/// Enhanced memory tracker for unsafe/FFI operations
pub struct UnsafeFFITracker {
    /// Enhanced allocations with source tracking
    enhanced_allocations: Mutex<HashMap<usize, EnhancedAllocationInfo>>,
    /// Freed pointers (for double-free detection)
    freed_pointers: Mutex<HashMap<usize, (CallStackRef, u128)>>,
    /// Safety violations log
    violations: Mutex<Vec<SafetyViolation>>,
    /// C library tracking registry
    c_libraries: Mutex<HashMap<String, CLibraryInfo>>,
    /// Enhanced LibC hook registry
    libc_hooks: Mutex<HashMap<String, EnhancedLibCHookInfo>>,
    /// Memory passport registry
    memory_passports: Mutex<HashMap<usize, MemoryPassport>>,
}

impl UnsafeFFITracker {
    /// Create a new enhanced tracker
    pub fn new() -> Self {
        Self {
            enhanced_allocations: Mutex::new(HashMap::new()),
            freed_pointers: Mutex::new(HashMap::new()),
            violations: Mutex::new(Vec::new()),
            c_libraries: Mutex::new(HashMap::new()),
            libc_hooks: Mutex::new(HashMap::new()),
            memory_passports: Mutex::new(HashMap::new()),
        }
    }

    /// Create a default risk assessment for unsafe operations
    fn create_default_unsafe_risk_assessment(&self, unsafe_location: &str) -> RiskAssessment {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        let risk_factors = vec![RiskFactor {
            factor_type: RiskFactorType::ManualMemoryManagement,
            severity: 5.0,
            description: "Manual memory management in unsafe block".to_string(),
            source_location: Some(unsafe_location.to_string()),
        }];

        RiskAssessment {
            risk_level: RiskLevel::Medium,
            risk_factors,
            mitigation_suggestions: vec![
                "Ensure proper memory cleanup".to_string(),
                "Use RAII patterns where possible".to_string(),
            ],
            confidence_score: 0.7,
            assessment_timestamp: current_time,
        }
    }

    /// Create a default LibC hook info for FFI operations
    fn create_default_libc_hook_info(&self, function_name: &str, size: usize) -> LibCHookInfo {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        LibCHookInfo {
            hook_method: HookMethod::DynamicLinker,
            original_function: function_name.to_string(),
            hook_timestamp: current_time,
            allocation_metadata: AllocationMetadata {
                requested_size: size,
                actual_size: size,
                alignment: 8, // Default alignment
                allocator_info: "libc malloc".to_string(),
                protection_flags: Some(MemoryProtectionFlags {
                    readable: true,
                    writable: true,
                    executable: false,
                    shared: false,
                }),
            },
            hook_overhead_ns: Some(100), // Estimated overhead
        }
    }

    /// Create a memory passport for cross-boundary tracking
    fn create_memory_passport(&self, ptr: usize, origin_context: &str) -> MemoryPassport {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        MemoryPassport {
            passport_id: format!("passport_{ptr:x}_{current_time}"),
            origin: AllocationOrigin {
                context: origin_context.to_string(),
                allocator_function: "unknown".to_string(),
                timestamp: current_time,
                call_stack: {
                    let normalizer = get_global_call_stack_normalizer();
                    let empty_frames = vec![];
                    let id = normalizer.normalize_call_stack(&empty_frames).unwrap_or(0);
                    CallStackRef::new(id, Some(0))
                },
            },
            journey: Vec::new(),
            current_owner: OwnershipInfo {
                owner_context: origin_context.to_string(),
                owner_function: "unknown".to_string(),
                transfer_timestamp: current_time,
                expected_lifetime: None,
            },
            validity_status: ValidityStatus::Valid,
            security_clearance: SecurityClearance::Public,
        }
    }

    /// Track an unsafe Rust allocation
    pub fn track_unsafe_allocation(
        &self,
        ptr: usize,
        size: usize,
        unsafe_location: String,
    ) -> TrackingResult<()> {
        let call_stack = self.capture_call_stack()?;
        let base_allocation = AllocationInfo::new(ptr, size);
        let risk_assessment = self.create_default_unsafe_risk_assessment(&unsafe_location);

        let enhanced = EnhancedAllocationInfo {
            base: base_allocation,
            source: AllocationSource::UnsafeRust {
                unsafe_block_location: unsafe_location,
                call_stack: call_stack.clone(),
                risk_assessment,
            },
            call_stack,
            cross_boundary_events: Vec::new(),
            safety_violations: Vec::new(),
            ffi_tracked: false,
            memory_passport: None,
            ownership_history: None,
        };

        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            allocations.insert(ptr, enhanced);
            tracing::info!("Tracked unsafe allocation at {:x} (size: {})", ptr, size);
        }

        Ok(())
    }

    /// Track an FFI allocation
    pub fn track_ffi_allocation(
        &self,
        ptr: usize,
        size: usize,
        library_name: String,
        function_name: String,
    ) -> TrackingResult<()> {
        let call_stack = self.capture_call_stack()?;
        let base_allocation = AllocationInfo::new(ptr, size);
        let libc_hook_info = self.create_default_libc_hook_info(&function_name, size);

        // Resolve FFI function information
        let resolver = get_global_ffi_resolver();
        let resolved_function = resolver
            .resolve_function(&function_name, Some(&library_name))
            .unwrap_or_else(|_| {
                tracing::warn!(
                    "Failed to resolve FFI function: {}::{}",
                    library_name,
                    function_name
                );
                // Create fallback resolution
                ResolvedFfiFunction {
                    library_name: library_name.clone(),
                    function_name: function_name.clone(),
                    signature: None,
                    category: crate::analysis::FfiFunctionCategory::Unknown,
                    risk_level: crate::analysis::FfiRiskLevel::Medium,
                    metadata: std::collections::HashMap::new(),
                }
            });

        let enhanced = EnhancedAllocationInfo {
            base: base_allocation,
            source: AllocationSource::FfiC {
                resolved_function,
                call_stack: call_stack.clone(),
                libc_hook_info,
            },
            call_stack,
            cross_boundary_events: Vec::new(),
            safety_violations: Vec::new(),
            ffi_tracked: true,
            memory_passport: None,
            ownership_history: None,
        };

        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            allocations.insert(ptr, enhanced);
            tracing::info!("Tracked FFI allocation at {:x} (size: {})", ptr, size);
        }

        Ok(())
    }

    /// Track a deallocation with safety checks
    pub fn track_enhanced_deallocation(&self, ptr: usize) -> TrackingResult<()> {
        let call_stack = self.capture_call_stack()?;
        let timestamp = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_millis();

        // Check for double free
        if let Ok(freed) = self.freed_pointers.lock() {
            if let Some((first_free_stack, _first_timestamp)) = freed.get(&ptr) {
                let violation = SafetyViolation::DoubleFree {
                    first_free_stack: first_free_stack.clone(),
                    second_free_stack: call_stack.clone(),
                    timestamp,
                };

                if let Ok(mut violations) = self.violations.lock() {
                    violations.push(violation);
                }

                tracing::error!("Double free detected at {:x}", ptr);
                return Err(TrackingError::MemoryCorruption(
                    "Memory corruption detected".to_string(),
                ));
            }
        }

        // Check if allocation exists
        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            if let Some(mut allocation) = allocations.remove(&ptr) {
                allocation.base.mark_deallocated();

                // Record in freed pointers
                if let Ok(mut freed) = self.freed_pointers.lock() {
                    freed.insert(ptr, (call_stack, timestamp));
                }

                tracing::info!("Tracked enhanced deallocation at {:x}", ptr);
            } else {
                // Invalid free
                let violation = SafetyViolation::InvalidFree {
                    attempted_pointer: ptr,
                    stack: call_stack,
                    timestamp,
                };

                if let Ok(mut violations) = self.violations.lock() {
                    violations.push(violation);
                }

                tracing::error!("Invalid free detected at {:x}", ptr);
                return Err(TrackingError::InvalidPointer(format!(
                    "Invalid pointer: 0x{ptr:x}"
                )));
            }
        }

        Ok(())
    }

    /// Record a cross-boundary event
    pub fn record_boundary_event(
        &self,
        ptr: usize,
        event_type: BoundaryEventType,
        from_context: String,
        to_context: String,
    ) -> TrackingResult<()> {
        let call_stack = self.capture_call_stack()?;
        let timestamp = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_millis();

        let event = BoundaryEvent {
            event_type,
            timestamp,
            from_context,
            to_context,
            stack: call_stack,
        };

        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get_mut(&ptr) {
                allocation.cross_boundary_events.push(event);
                tracing::info!("Recorded boundary event for {:x}", ptr);
            }
        }

        Ok(())
    }

    /// Create or update memory passport for cross-boundary tracking
    pub fn create_or_update_passport(
        &self,
        ptr: usize,
        operation: &str,
        context: &str,
    ) -> TrackingResult<()> {
        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get_mut(&ptr) {
                let current_time = std::time::SystemTime::now()
                    .duration_since(std::time::UNIX_EPOCH)
                    .unwrap_or_default()
                    .as_nanos();

                if allocation.memory_passport.is_none() {
                    allocation.memory_passport = Some(self.create_memory_passport(ptr, context));
                }

                if let Some(passport) = &mut allocation.memory_passport {
                    let stamp = PassportStamp {
                        timestamp: current_time,
                        location: context.to_string(),
                        operation: operation.to_string(),
                        authority: "UnsafeFFITracker".to_string(),
                        verification_hash: format!("{:x}", ptr ^ current_time as usize),
                    };
                    passport.journey.push(stamp);
                }
            }
        }

        Ok(())
    }

    /// Update ownership information for a memory allocation
    pub fn update_ownership(
        &self,
        ptr: usize,
        new_owner_context: String,
        new_owner_function: String,
    ) -> TrackingResult<()> {
        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get_mut(&ptr) {
                let current_time = std::time::SystemTime::now()
                    .duration_since(std::time::UNIX_EPOCH)
                    .unwrap_or_default()
                    .as_nanos();

                if let Some(passport) = &mut allocation.memory_passport {
                    passport.current_owner = OwnershipInfo {
                        owner_context: new_owner_context,
                        owner_function: new_owner_function,
                        transfer_timestamp: current_time,
                        expected_lifetime: None,
                    };
                }
            }
        }

        Ok(())
    }

    /// Validate memory passport integrity
    pub fn validate_passport(&self, ptr: usize) -> TrackingResult<bool> {
        if let Ok(allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get(&ptr) {
                if let Some(passport) = &allocation.memory_passport {
                    // Basic validation: check if passport is not expired or revoked
                    match passport.validity_status {
                        ValidityStatus::Valid => Ok(true),
                        ValidityStatus::Expired
                        | ValidityStatus::Revoked
                        | ValidityStatus::Suspicious => Ok(false),
                    }
                } else {
                    Ok(false) // No passport means not validated
                }
            } else {
                Ok(false) // Allocation not found
            }
        } else {
            Err(TrackingError::LockError(
                "Failed to acquire allocations lock".to_string(),
            ))
        }
    }

    /// Get all safety violations
    pub fn get_safety_violations(&self) -> TrackingResult<Vec<SafetyViolation>> {
        self.violations
            .lock()
            .map(|v| v.clone())
            .map_err(|e| TrackingError::LockError(e.to_string()))
    }

    /// Get enhanced allocations
    pub fn get_enhanced_allocations(&self) -> TrackingResult<Vec<EnhancedAllocationInfo>> {
        self.enhanced_allocations
            .lock()
            .map(|allocations| allocations.values().cloned().collect())
            .map_err(|e| TrackingError::LockError(e.to_string()))
    }

    /// Capture current call stack and normalize it
    fn capture_call_stack(&self) -> TrackingResult<CallStackRef> {
        // In a real implementation, this would use backtrace crate
        // For now, return a simplified stack
        let frames = vec![StackFrame {
            function_name: "current_function".to_string(),
            file_name: Some("src/unsafe_ffi_tracker.rs".to_string()),
            line_number: Some(42),
            is_unsafe: true,
        }];

        let normalizer = get_global_call_stack_normalizer();
        let id = normalizer.normalize_call_stack(&frames)?;
        Ok(CallStackRef::new(id, Some(frames.len())))
    }

    /// Detect potential memory leaks
    pub fn detect_leaks(&self, threshold_ms: u128) -> TrackingResult<Vec<SafetyViolation>> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_millis();

        let mut leaks = Vec::new();

        if let Ok(allocations) = self.enhanced_allocations.lock() {
            for allocation in allocations.values() {
                let alloc_time = allocation.base.timestamp_alloc as u128;
                let age = current_time.saturating_sub(alloc_time);
                if age > threshold_ms && allocation.base.is_active() {
                    leaks.push(SafetyViolation::PotentialLeak {
                        allocation_stack: allocation.call_stack.clone(),
                        allocation_timestamp: allocation.base.timestamp_alloc as u128,
                        leak_detection_timestamp: current_time,
                    });
                }
            }
        }

        Ok(leaks)
    }
}

impl Default for UnsafeFFITracker {
    fn default() -> Self {
        Self::new()
    }
}

/// Global instance of the enhanced tracker
static GLOBAL_UNSAFE_FFI_TRACKER: std::sync::OnceLock<std::sync::Arc<UnsafeFFITracker>> =
    std::sync::OnceLock::new();

/// Get the global unsafe/FFI tracker instance
pub fn get_global_unsafe_ffi_tracker() -> std::sync::Arc<UnsafeFFITracker> {
    GLOBAL_UNSAFE_FFI_TRACKER
        .get_or_init(|| std::sync::Arc::new(UnsafeFFITracker::new()))
        .clone()
}

/// Macro for tracking unsafe allocations
#[macro_export]
macro_rules! track_unsafe_alloc {
    ($ptr:expr, $size:expr) => {{
        let tracker = $crate::unsafe_ffi_tracker::get_global_unsafe_ffi_tracker();
        let location = format!("{}:{}:{}", file!(), line!(), column!());
        let _ = tracker.track_unsafe_allocation($ptr as usize, $size, location);
    }};
}

/// Macro for tracking FFI allocations
#[macro_export]
macro_rules! track_ffi_alloc {
    ($ptr:expr, $size:expr, $lib:expr, $func:expr) => {{
        let tracker = $crate::unsafe_ffi_tracker::get_global_unsafe_ffi_tracker();
        let _ =
            tracker.track_ffi_allocation($ptr as usize, $size, $lib.to_string(), $func.to_string());
    }};
}

/// Statistics for unsafe and FFI operations
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct UnsafeFFIStats {
    /// Total number of unsafe operations
    pub total_operations: usize,
    /// Number of unsafe blocks encountered
    pub unsafe_blocks: usize,
    /// Number of FFI calls made
    pub ffi_calls: usize,
    /// Number of raw pointer operations
    pub raw_pointer_operations: usize,
    /// Number of memory violations detected
    pub memory_violations: usize,
    /// Overall risk score (0.0 to 10.0)
    pub risk_score: f64,
    /// List of unsafe operations
    pub operations: Vec<UnsafeOperation>,
}

/// Represents a single unsafe operation
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct UnsafeOperation {
    /// Type of operation
    pub operation_type: UnsafeOperationType,
    /// Location in source code
    pub location: String,
    /// Risk level of this operation
    pub risk_level: RiskLevel,
    /// Timestamp when operation occurred
    pub timestamp: u128,
    /// Description of the operation
    pub description: String,
}

/// Types of unsafe operations
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum UnsafeOperationType {
    /// Raw pointer dereference operation
    RawPointerDeref,
    /// Foreign Function Interface call
    FfiCall,
    /// Unsafe block execution
    UnsafeBlock,
    /// Memory safety violation detected
    MemoryViolation,
    /// Memory transfer across safety boundaries
    CrossBoundaryTransfer,
}

/// C Library information for detailed tracking
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CLibraryInfo {
    /// Name of the C library
    pub library_name: String,
    /// Version of the library if available
    pub library_version: Option<String>,
    /// Path to the library file
    pub library_path: Option<String>,
    /// Functions from this library that have been called
    pub functions_called: HashMap<String, CFunctionInfo>,
    /// Total number of allocations from this library
    pub total_allocations: usize,
    /// Total bytes allocated from this library
    pub total_bytes_allocated: usize,
    /// Library load timestamp
    pub load_timestamp: u128,
    /// Library metadata
    pub metadata: LibraryMetadata,
}

/// Information about a specific C function
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CFunctionInfo {
    /// Function name
    pub function_name: String,
    /// Function signature if available
    pub function_signature: Option<String>,
    /// Number of times this function has been called
    pub call_count: usize,
    /// Total bytes allocated by this function
    pub bytes_allocated: usize,
    /// Average allocation size
    pub average_allocation_size: f64,
    /// Risk assessment for this function
    pub risk_assessment: RiskAssessment,
    /// Performance metrics
    pub performance_metrics: FunctionPerformanceMetrics,
    /// First call timestamp
    pub first_call_timestamp: u128,
    /// Last call timestamp
    pub last_call_timestamp: u128,
}

/// Performance metrics for C functions
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FunctionPerformanceMetrics {
    /// Average execution time in nanoseconds
    pub avg_execution_time_ns: u64,
    /// Minimum execution time in nanoseconds
    pub min_execution_time_ns: u64,
    /// Maximum execution time in nanoseconds
    pub max_execution_time_ns: u64,
    /// Total execution time in nanoseconds
    pub total_execution_time_ns: u64,
    /// Memory overhead introduced by tracking
    pub tracking_overhead_ns: u64,
}

/// Library metadata
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct LibraryMetadata {
    /// Architecture (x86_64, arm64, etc.)
    pub architecture: String,
    /// Operating system
    pub operating_system: String,
    /// Compiler used to build the library
    pub compiler_info: Option<String>,
    /// Debug symbols available
    pub has_debug_symbols: bool,
    /// Security features enabled
    pub security_features: Vec<String>,
}

/// Enhanced LibC hook information with detailed tracking
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct EnhancedLibCHookInfo {
    /// Base hook information
    pub base_info: LibCHookInfo,
    /// Detailed function tracking
    pub function_tracking: CFunctionInfo,
    /// Hook installation details
    pub installation_details: HookInstallationDetails,
    /// Runtime behavior analysis
    pub runtime_analysis: RuntimeBehaviorAnalysis,
    /// Security analysis
    pub security_analysis: SecurityAnalysis,
}

/// Details about hook installation
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct HookInstallationDetails {
    /// Method used to install the hook
    pub installation_method: HookInstallationMethod,
    /// Success status of installation
    pub installation_success: bool,
    /// Error message if installation failed
    pub installation_error: Option<String>,
    /// Timestamp of installation attempt
    pub installation_timestamp: u128,
    /// Process ID where hook was installed
    pub process_id: u32,
    /// Thread ID where hook was installed
    pub thread_id: u64,
}

/// Methods for installing hooks
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum HookInstallationMethod {
    /// Preload library method
    Preload,
    /// Runtime symbol interposition
    SymbolInterposition,
    /// Binary patching
    BinaryPatching,
    /// Debugger-based hooking
    DebuggerHook,
    /// Kernel-level hooking
    KernelHook,
}

/// Runtime behavior analysis for hooked functions
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RuntimeBehaviorAnalysis {
    /// Memory access patterns
    pub memory_patterns: Vec<MemoryAccessPattern>,
    /// Allocation size distribution
    pub size_distribution: SizeDistribution,
    /// Temporal patterns
    pub temporal_patterns: TemporalPatterns,
    /// Error patterns
    pub error_patterns: Vec<ErrorPattern>,
}

/// Memory access pattern analysis
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MemoryAccessPattern {
    /// Pattern type
    pub pattern_type: MemoryPatternType,
    /// Frequency of this pattern
    pub frequency: usize,
    /// Average size involved in this pattern
    pub average_size: usize,
    /// Risk level associated with this pattern
    pub risk_level: RiskLevel,
}

/// Types of memory access patterns
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum MemoryPatternType {
    /// Sequential allocation pattern
    Sequential,
    /// Random allocation pattern
    Random,
    /// Bulk allocation pattern
    Bulk,
    /// Fragmented allocation pattern
    Fragmented,
    /// Reallocation pattern
    Reallocation,
}

/// Size distribution analysis
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SizeDistribution {
    /// Small allocations (< 1KB)
    pub small_allocations: usize,
    /// Medium allocations (1KB - 1MB)
    pub medium_allocations: usize,
    /// Large allocations (> 1MB)
    pub large_allocations: usize,
    /// Average allocation size
    pub average_size: f64,
    /// Standard deviation of sizes
    pub size_std_dev: f64,
}

/// Temporal patterns in allocations
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TemporalPatterns {
    /// Allocation rate (allocations per second)
    pub allocation_rate: f64,
    /// Peak allocation periods
    pub peak_periods: Vec<PeakPeriod>,
    /// Allocation bursts detected
    pub burst_count: usize,
    /// Average time between allocations
    pub avg_time_between_allocs_ms: f64,
}

/// Peak allocation period
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PeakPeriod {
    /// Start timestamp of peak
    pub start_timestamp: u128,
    /// End timestamp of peak
    pub end_timestamp: u128,
    /// Number of allocations during peak
    pub allocation_count: usize,
    /// Total bytes allocated during peak
    pub bytes_allocated: usize,
}

/// Error pattern analysis
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ErrorPattern {
    /// Type of error
    pub error_type: ErrorType,
    /// Frequency of this error
    pub frequency: usize,
    /// Context where error occurs
    pub context: String,
    /// Suggested mitigation
    pub mitigation: String,
}

/// Types of errors that can be detected
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ErrorType {
    /// Allocation failure
    AllocationFailure,
    /// Invalid free
    InvalidFree,
    /// Double free
    DoubleFree,
    /// Memory leak
    MemoryLeak,
    /// Buffer overflow
    BufferOverflow,
    /// Use after free
    UseAfterFree,
}

/// Security analysis for hooked functions
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityAnalysis {
    /// Security vulnerabilities detected
    pub vulnerabilities: Vec<SecurityVulnerability>,
    /// Security score (0.0 to 10.0)
    pub security_score: f64,
    /// Recommended security measures
    pub recommendations: Vec<String>,
    /// Compliance status
    pub compliance_status: ComplianceStatus,
}

/// Security vulnerability information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityVulnerability {
    /// Type of vulnerability
    pub vulnerability_type: VulnerabilityType,
    /// Severity level
    pub severity: RiskLevel,
    /// Description of the vulnerability
    pub description: String,
    /// Location where vulnerability was detected
    pub location: String,
    /// Potential impact
    pub potential_impact: String,
    /// Remediation steps
    pub remediation: Vec<String>,
}

/// Types of security vulnerabilities
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum VulnerabilityType {
    /// Buffer overflow vulnerability
    BufferOverflow,
    /// Use after free vulnerability
    UseAfterFree,
    /// Double free vulnerability
    DoubleFree,
    /// Memory leak vulnerability
    MemoryLeak,
    /// Integer overflow vulnerability
    IntegerOverflow,
    /// Format string vulnerability
    FormatString,
    /// Race condition vulnerability
    RaceCondition,
}

/// Compliance status
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ComplianceStatus {
    /// Memory safety compliance
    pub memory_safety: bool,
    /// Thread safety compliance
    pub thread_safety: bool,
    /// API usage compliance
    pub api_usage: bool,
    /// Security best practices compliance
    pub security_practices: bool,
    /// Overall compliance score
    pub overall_score: f64,
}

impl UnsafeFFITracker {
    /// Register a C library for tracking
    pub fn register_c_library(
        &self,
        library_name: String,
        library_path: Option<String>,
        library_version: Option<String>,
    ) -> TrackingResult<()> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        let library_info = CLibraryInfo {
            library_name: library_name.clone(),
            library_version,
            library_path,
            functions_called: HashMap::new(),
            total_allocations: 0,
            total_bytes_allocated: 0,
            load_timestamp: current_time,
            metadata: LibraryMetadata {
                architecture: std::env::consts::ARCH.to_string(),
                operating_system: std::env::consts::OS.to_string(),
                compiler_info: None,
                has_debug_symbols: false,
                security_features: Vec::new(),
            },
        };

        if let Ok(mut libraries) = self.c_libraries.lock() {
            libraries.insert(library_name.clone(), library_info);
            tracing::info!("Registered C library: {}", library_name);
        }

        Ok(())
    }

    /// Track a C function call with detailed information
    pub fn track_c_function_call(
        &self,
        library_name: &str,
        function_name: &str,
        allocation_size: usize,
        execution_time_ns: u64,
    ) -> TrackingResult<()> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        if let Ok(mut libraries) = self.c_libraries.lock() {
            let library = libraries
                .entry(library_name.to_string())
                .or_insert_with(|| CLibraryInfo {
                    library_name: library_name.to_string(),
                    library_version: None,
                    library_path: None,
                    functions_called: HashMap::new(),
                    total_allocations: 0,
                    total_bytes_allocated: 0,
                    load_timestamp: current_time,
                    metadata: LibraryMetadata {
                        architecture: std::env::consts::ARCH.to_string(),
                        operating_system: std::env::consts::OS.to_string(),
                        compiler_info: None,
                        has_debug_symbols: false,
                        security_features: Vec::new(),
                    },
                });

            // Update library statistics
            library.total_allocations += 1;
            library.total_bytes_allocated += allocation_size;

            // Update or create function information
            let function_info = library
                .functions_called
                .entry(function_name.to_string())
                .or_insert_with(|| CFunctionInfo {
                    function_name: function_name.to_string(),
                    function_signature: None,
                    call_count: 0,
                    bytes_allocated: 0,
                    average_allocation_size: 0.0,
                    risk_assessment: RiskAssessment {
                        risk_level: RiskLevel::Low,
                        risk_factors: Vec::new(),
                        mitigation_suggestions: Vec::new(),
                        confidence_score: 0.5,
                        assessment_timestamp: current_time,
                    },
                    performance_metrics: FunctionPerformanceMetrics {
                        avg_execution_time_ns: 0,
                        min_execution_time_ns: u64::MAX,
                        max_execution_time_ns: 0,
                        total_execution_time_ns: 0,
                        tracking_overhead_ns: 0,
                    },
                    first_call_timestamp: current_time,
                    last_call_timestamp: current_time,
                });

            // Update function statistics
            function_info.call_count += 1;
            function_info.bytes_allocated += allocation_size;
            function_info.average_allocation_size =
                function_info.bytes_allocated as f64 / function_info.call_count as f64;
            function_info.last_call_timestamp = current_time;

            // Update performance metrics
            let metrics = &mut function_info.performance_metrics;
            metrics.total_execution_time_ns += execution_time_ns;
            metrics.avg_execution_time_ns =
                metrics.total_execution_time_ns / function_info.call_count as u64;
            metrics.min_execution_time_ns = metrics.min_execution_time_ns.min(execution_time_ns);
            metrics.max_execution_time_ns = metrics.max_execution_time_ns.max(execution_time_ns);

            tracing::debug!(
                "Tracked C function call: {}::{} (size: {}, time: {}ns)",
                library_name,
                function_name,
                allocation_size,
                execution_time_ns
            );
        }

        Ok(())
    }

    /// Install an enhanced LibC hook
    pub fn install_enhanced_libc_hook(
        &self,
        function_name: String,
        hook_method: HookInstallationMethod,
    ) -> TrackingResult<()> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        let installation_details = HookInstallationDetails {
            installation_method: hook_method,
            installation_success: true, // Assume success for now
            installation_error: None,
            installation_timestamp: current_time,
            process_id: std::process::id(),
            thread_id: 0, // Would need platform-specific code to get thread ID
        };

        let enhanced_hook = EnhancedLibCHookInfo {
            base_info: LibCHookInfo {
                hook_method: HookMethod::DynamicLinker,
                original_function: function_name.clone(),
                hook_timestamp: current_time,
                allocation_metadata: AllocationMetadata {
                    requested_size: 0,
                    actual_size: 0,
                    alignment: 8,
                    allocator_info: format!("hooked_{function_name}"),
                    protection_flags: Some(MemoryProtectionFlags {
                        readable: true,
                        writable: true,
                        executable: false,
                        shared: false,
                    }),
                },
                hook_overhead_ns: Some(50),
            },
            function_tracking: CFunctionInfo {
                function_name: function_name.clone(),
                function_signature: None,
                call_count: 0,
                bytes_allocated: 0,
                average_allocation_size: 0.0,
                risk_assessment: RiskAssessment {
                    risk_level: RiskLevel::Medium,
                    risk_factors: Vec::new(),
                    mitigation_suggestions: vec![
                        "Monitor for memory leaks".to_string(),
                        "Validate all pointer operations".to_string(),
                    ],
                    confidence_score: 0.7,
                    assessment_timestamp: current_time,
                },
                performance_metrics: FunctionPerformanceMetrics {
                    avg_execution_time_ns: 0,
                    min_execution_time_ns: u64::MAX,
                    max_execution_time_ns: 0,
                    total_execution_time_ns: 0,
                    tracking_overhead_ns: 50,
                },
                first_call_timestamp: current_time,
                last_call_timestamp: current_time,
            },
            installation_details,
            runtime_analysis: RuntimeBehaviorAnalysis {
                memory_patterns: Vec::new(),
                size_distribution: SizeDistribution {
                    small_allocations: 0,
                    medium_allocations: 0,
                    large_allocations: 0,
                    average_size: 0.0,
                    size_std_dev: 0.0,
                },
                temporal_patterns: TemporalPatterns {
                    allocation_rate: 0.0,
                    peak_periods: Vec::new(),
                    burst_count: 0,
                    avg_time_between_allocs_ms: 0.0,
                },
                error_patterns: Vec::new(),
            },
            security_analysis: SecurityAnalysis {
                vulnerabilities: Vec::new(),
                security_score: 5.0,
                recommendations: vec![
                    "Enable memory protection".to_string(),
                    "Use safe allocation patterns".to_string(),
                ],
                compliance_status: ComplianceStatus {
                    memory_safety: false,
                    thread_safety: false,
                    api_usage: true,
                    security_practices: false,
                    overall_score: 0.25,
                },
            },
        };

        if let Ok(mut hooks) = self.libc_hooks.lock() {
            hooks.insert(function_name.clone(), enhanced_hook);
            tracing::info!("Installed enhanced LibC hook for: {}", function_name);
        }

        Ok(())
    }

    /// Create and register a memory passport for cross-boundary tracking
    pub fn create_and_register_passport(
        &self,
        ptr: usize,
        origin_context: &str,
        security_clearance: SecurityClearance,
    ) -> TrackingResult<String> {
        let passport = self.create_memory_passport(ptr, origin_context);
        let passport_id = passport.passport_id.clone();

        // Set the security clearance
        let mut passport = passport;
        passport.security_clearance = security_clearance;

        if let Ok(mut passports) = self.memory_passports.lock() {
            passports.insert(ptr, passport);
            tracing::info!("Created memory passport {} for ptr {:x}", passport_id, ptr);
        }

        Ok(passport_id)
    }

    /// Update memory passport with new stamp
    pub fn stamp_passport(
        &self,
        ptr: usize,
        operation: &str,
        location: &str,
        authority: &str,
    ) -> TrackingResult<()> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        if let Ok(mut passports) = self.memory_passports.lock() {
            if let Some(passport) = passports.get_mut(&ptr) {
                let stamp = PassportStamp {
                    timestamp: current_time,
                    location: location.to_string(),
                    operation: operation.to_string(),
                    authority: authority.to_string(),
                    verification_hash: format!("{:x}", ptr ^ current_time as usize),
                };

                passport.journey.push(stamp);
                tracing::debug!("Stamped passport for ptr {:x}: {}", ptr, operation);
            } else {
                return Err(TrackingError::InvalidPointer(format!(
                    "No passport found for pointer: 0x{ptr:x}",
                )));
            }
        }

        Ok(())
    }

    /// Transfer memory passport ownership
    pub fn transfer_passport_ownership(
        &self,
        ptr: usize,
        new_owner_context: &str,
        new_owner_function: &str,
    ) -> TrackingResult<()> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        if let Ok(mut passports) = self.memory_passports.lock() {
            if let Some(passport) = passports.get_mut(&ptr) {
                passport.current_owner = OwnershipInfo {
                    owner_context: new_owner_context.to_string(),
                    owner_function: new_owner_function.to_string(),
                    transfer_timestamp: current_time,
                    expected_lifetime: None,
                };

                // Add a stamp for the ownership transfer
                let stamp = PassportStamp {
                    timestamp: current_time,
                    location: new_owner_context.to_string(),
                    operation: "ownership_transfer".to_string(),
                    authority: "UnsafeFFITracker".to_string(),
                    verification_hash: format!("{:x}", ptr ^ current_time as usize),
                };

                passport.journey.push(stamp);
                tracing::info!(
                    "Transferred passport ownership for ptr {:x} to {}::{}",
                    ptr,
                    new_owner_context,
                    new_owner_function
                );
            } else {
                return Err(TrackingError::InvalidPointer(format!(
                    "No passport found for pointer: 0x{ptr:x}",
                )));
            }
        }

        Ok(())
    }

    /// Revoke a memory passport (when memory is freed)
    pub fn revoke_passport(&self, ptr: usize, reason: &str) -> TrackingResult<()> {
        if let Ok(mut passports) = self.memory_passports.lock() {
            if let Some(passport) = passports.get_mut(&ptr) {
                passport.validity_status = ValidityStatus::Revoked;

                // Add a final stamp
                let current_time = std::time::SystemTime::now()
                    .duration_since(std::time::UNIX_EPOCH)
                    .unwrap_or_default()
                    .as_nanos();

                let stamp = PassportStamp {
                    timestamp: current_time,
                    location: "memory_freed".to_string(),
                    operation: format!("revoked: {reason}"),
                    authority: "UnsafeFFITracker".to_string(),
                    verification_hash: format!("{:x}", ptr ^ current_time as usize),
                };

                passport.journey.push(stamp);
                tracing::info!("Revoked passport for ptr {ptr:x}: {reason}");
            }
        }

        Ok(())
    }

    /// Get C library statistics
    pub fn get_c_library_stats(&self) -> TrackingResult<HashMap<String, CLibraryInfo>> {
        self.c_libraries
            .lock()
            .map(|libs| libs.clone())
            .map_err(|e| TrackingError::LockError(e.to_string()))
    }

    /// Get LibC hook information
    pub fn get_libc_hook_info(&self) -> TrackingResult<HashMap<String, EnhancedLibCHookInfo>> {
        self.libc_hooks
            .lock()
            .map(|hooks| hooks.clone())
            .map_err(|e| TrackingError::LockError(e.to_string()))
    }

    /// Get memory passport information
    pub fn get_memory_passports(&self) -> TrackingResult<HashMap<usize, MemoryPassport>> {
        self.memory_passports
            .lock()
            .map(|passports| passports.clone())
            .map_err(|e| TrackingError::LockError(e.to_string()))
    }

    /// Analyze cross-boundary risks with detailed assessment
    pub fn analyze_cross_boundary_risks(&self) -> TrackingResult<Vec<SafetyViolation>> {
        let mut risks = Vec::new();

        if let Ok(passports) = self.memory_passports.lock() {
            for (ptr, passport) in passports.iter() {
                // Check for suspicious passport activity
                if passport.journey.len() > 10 {
                    risks.push(SafetyViolation::CrossBoundaryRisk {
                        risk_level: RiskLevel::Medium,
                        description: format!(
                            "Memory at {ptr:x} has crossed boundaries {} times",
                            passport.journey.len()
                        ),
                        stack: {
                            let normalizer = get_global_call_stack_normalizer();
                            let empty_frames = vec![];
                            let id = normalizer.normalize_call_stack(&empty_frames).unwrap_or(0);
                            CallStackRef::new(id, Some(0))
                        },
                    });
                }

                // Check for expired passports
                if matches!(passport.validity_status, ValidityStatus::Expired) {
                    risks.push(SafetyViolation::CrossBoundaryRisk {
                        risk_level: RiskLevel::High,
                        description: format!("Expired passport detected for memory at {ptr:x}"),
                        stack: {
                            let normalizer = get_global_call_stack_normalizer();
                            let empty_frames = vec![];
                            let id = normalizer.normalize_call_stack(&empty_frames).unwrap_or(0);
                            CallStackRef::new(id, Some(0))
                        },
                    });
                }
            }
        }

        Ok(risks)
    }

    /// Process boundary events with comprehensive analysis
    pub fn process_boundary_event(
        &self,
        ptr: usize,
        event_type: BoundaryEventType,
        from_context: &str,
        to_context: &str,
        transfer_size: usize,
    ) -> TrackingResult<BoundaryEventAnalysis> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        // Record the boundary event
        self.record_boundary_event(
            ptr,
            event_type.clone(),
            from_context.to_string(),
            to_context.to_string(),
        )?;

        // Analyze the risk level for this specific transfer
        let risk_analysis = self.assess_boundary_transfer_risk(
            ptr,
            &event_type,
            from_context,
            to_context,
            transfer_size,
        )?;

        // Update ownership tracking
        self.track_ownership_transfer(ptr, from_context, to_context)?;

        // Create comprehensive analysis
        let analysis = BoundaryEventAnalysis {
            event_id: format!("boundary_{ptr}_{current_time}"),
            ptr,
            event_type: event_type.clone(),
            from_context: from_context.to_string(),
            to_context: to_context.to_string(),
            transfer_size,
            timestamp: current_time,
            risk_assessment: risk_analysis.clone(),
            ownership_chain: self.get_ownership_chain(ptr)?,
            security_implications: self.analyze_security_implications(
                ptr,
                from_context,
                to_context,
            )?,
            performance_impact: self.estimate_performance_impact(&event_type, transfer_size),
            mitigation_recommendations: self.generate_mitigation_recommendations(&risk_analysis),
        };

        Ok(analysis)
    }

    /// Assess risk level for boundary transfers
    fn assess_boundary_transfer_risk(
        &self,
        ptr: usize,
        event_type: &BoundaryEventType,
        _from_context: &str,
        _to_context: &str,
        transfer_size: usize,
    ) -> TrackingResult<BoundaryRiskAssessment> {
        let mut risk_factors = Vec::new();
        let mut risk_score = 0.0;

        // Analyze transfer direction risk
        match event_type {
            BoundaryEventType::RustToFfi => {
                risk_factors.push(BoundaryRiskFactor {
                    factor_type: BoundaryRiskFactorType::RustToForeignTransfer,
                    severity: 6.0,
                    description: "Memory allocated in Rust being passed to foreign code"
                        .to_string(),
                    mitigation: "Ensure foreign code doesn't free Rust-allocated memory"
                        .to_string(),
                });
                risk_score += 6.0;
            }
            BoundaryEventType::FfiToRust => {
                risk_factors.push(BoundaryRiskFactor {
                    factor_type: BoundaryRiskFactorType::ForeignToRustTransfer,
                    severity: 7.0,
                    description: "Foreign-allocated memory being passed to Rust".to_string(),
                    mitigation: "Validate memory layout and lifetime guarantees".to_string(),
                });
                risk_score += 7.0;
            }
            BoundaryEventType::OwnershipTransfer => {
                risk_factors.push(BoundaryRiskFactor {
                    factor_type: BoundaryRiskFactorType::OwnershipTransfer,
                    severity: 8.0,
                    description: "Memory ownership being transferred across language boundary"
                        .to_string(),
                    mitigation: "Clearly document ownership transfer and cleanup responsibilities"
                        .to_string(),
                });
                risk_score += 8.0;
            }
            BoundaryEventType::SharedAccess => {
                risk_factors.push(BoundaryRiskFactor {
                    factor_type: BoundaryRiskFactorType::SharedAccess,
                    severity: 5.0,
                    description: "Memory being shared between Rust and foreign code".to_string(),
                    mitigation: "Implement proper synchronization mechanisms".to_string(),
                });
                risk_score += 5.0;
            }
        }

        // Analyze transfer size risk
        if transfer_size > 1024 * 1024 {
            risk_factors.push(BoundaryRiskFactor {
                factor_type: BoundaryRiskFactorType::LargeTransfer,
                severity: 4.0,
                description: format!("Large memory transfer: {transfer_size} bytes"),
                mitigation: "Consider streaming or chunked transfer for large data".to_string(),
            });
            risk_score += 4.0;
        }

        // Check for frequent transfers (potential performance issue)
        if let Ok(allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get(&ptr) {
                if allocation.cross_boundary_events.len() > 5 {
                    risk_factors.push(BoundaryRiskFactor {
                        factor_type: BoundaryRiskFactorType::FrequentTransfers,
                        severity: 3.0,
                        description: format!(
                            "Memory has crossed boundaries {} times",
                            allocation.cross_boundary_events.len()
                        ),
                        mitigation: "Consider reducing boundary crossings or caching".to_string(),
                    });
                    risk_score += 3.0;
                }
            }
        }

        // Determine overall risk level
        let risk_level = if risk_score >= 15.0 {
            RiskLevel::Critical
        } else if risk_score >= 10.0 {
            RiskLevel::High
        } else if risk_score >= 5.0 {
            RiskLevel::Medium
        } else {
            RiskLevel::Low
        };

        Ok(BoundaryRiskAssessment {
            overall_risk_level: risk_level,
            risk_score,
            risk_factors,
            confidence_score: 0.8, // High confidence in boundary risk assessment
            assessment_timestamp: std::time::SystemTime::now()
                .duration_since(std::time::UNIX_EPOCH)
                .unwrap_or_default()
                .as_nanos(),
        })
    }

    /// Track ownership transfer across boundaries
    fn track_ownership_transfer(
        &self,
        ptr: usize,
        from_context: &str,
        to_context: &str,
    ) -> TrackingResult<()> {
        let current_time = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap_or_default()
            .as_nanos();

        // Update memory passport ownership
        if let Ok(mut passports) = self.memory_passports.lock() {
            if let Some(passport) = passports.get_mut(&ptr) {
                // Record the ownership transfer in the journey
                let stamp = PassportStamp {
                    timestamp: current_time,
                    location: to_context.to_string(),
                    operation: format!("ownership_transfer_from_{from_context}"),
                    authority: "BoundaryEventProcessor".to_string(),
                    verification_hash: format!("{:x}", ptr ^ current_time as usize),
                };
                passport.journey.push(stamp);

                // Update current owner
                passport.current_owner = OwnershipInfo {
                    owner_context: to_context.to_string(),
                    owner_function: "unknown".to_string(),
                    transfer_timestamp: current_time,
                    expected_lifetime: None,
                };
            }
        }

        // Update allocation tracking
        if let Ok(mut allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get_mut(&ptr) {
                // Add ownership transfer event
                let ownership_event = OwnershipTransferEvent {
                    transfer_id: format!("transfer_{ptr}_{current_time}"),
                    ptr,
                    from_context: from_context.to_string(),
                    to_context: to_context.to_string(),
                    transfer_timestamp: current_time,
                    transfer_reason: "boundary_crossing".to_string(),
                    validation_status: OwnershipValidationStatus::Pending,
                };

                // Store in allocation's ownership history
                if allocation.ownership_history.is_none() {
                    allocation.ownership_history = Some(Vec::new());
                }
                if let Some(ref mut history) = allocation.ownership_history {
                    history.push(ownership_event);
                }
            }
        }

        Ok(())
    }

    /// Get ownership chain for a memory allocation
    fn get_ownership_chain(&self, ptr: usize) -> TrackingResult<Vec<OwnershipRecord>> {
        let mut chain = Vec::new();

        if let Ok(allocations) = self.enhanced_allocations.lock() {
            if let Some(allocation) = allocations.get(&ptr) {
                if let Some(ref history) = allocation.ownership_history {
                    for transfer in history {
                        chain.push(OwnershipRecord {
                            context: transfer.to_context.clone(),
                            timestamp: transfer.transfer_timestamp,
                            transfer_reason: transfer.transfer_reason.clone(),
                            validation_status: transfer.validation_status.clone(),
                        });
                    }
                }
            }
        }

        Ok(chain)
    }

    /// Analyze security implications of boundary crossing
    fn analyze_security_implications(
        &self,
        _ptr: usize,
        from_context: &str,
        to_context: &str,
    ) -> TrackingResult<Vec<SecurityImplication>> {
        let mut implications = Vec::new();

        // Check for privilege escalation
        if from_context.contains("user") && to_context.contains("system") {
            implications.push(SecurityImplication {
                implication_type: SecurityImplicationType::PrivilegeEscalation,
                severity: RiskLevel::High,
                description: "Memory transfer from user context to system context".to_string(),
                potential_impact: "Potential privilege escalation vulnerability".to_string(),
                recommended_action: "Validate and sanitize all data before system context access"
                    .to_string(),
            });
        }

        // Check for data exposure
        if from_context.contains("secure") || to_context.contains("secure") {
            implications.push(SecurityImplication {
                implication_type: SecurityImplicationType::DataExposure,
                severity: RiskLevel::Medium,
                description: "Memory transfer involving secure context".to_string(),
                potential_impact: "Potential sensitive data exposure".to_string(),
                recommended_action: "Ensure proper data sanitization and access controls"
                    .to_string(),
            });
        }

        // Check for injection attacks
        if to_context.contains("interpreter") || to_context.contains("eval") {
            implications.push(SecurityImplication {
                implication_type: SecurityImplicationType::InjectionRisk,
                severity: RiskLevel::Critical,
                description: "Memory transfer to code interpretation context".to_string(),
                potential_impact: "Potential code injection vulnerability".to_string(),
                recommended_action: "Validate and sanitize all input data before interpretation"
                    .to_string(),
            });
        }

        Ok(implications)
    }

    /// Estimate performance impact of boundary crossing
    fn estimate_performance_impact(
        &self,
        event_type: &BoundaryEventType,
        transfer_size: usize,
    ) -> PerformanceImpact {
        let base_overhead_ns = match event_type {
            BoundaryEventType::RustToFfi => 100,
            BoundaryEventType::FfiToRust => 150,
            BoundaryEventType::OwnershipTransfer => 200,
            BoundaryEventType::SharedAccess => 50,
        };

        let size_overhead_ns = (transfer_size / 1024) as u64 * 10; // 10ns per KB
        let total_overhead_ns = base_overhead_ns + size_overhead_ns;

        let impact_level = if total_overhead_ns > 10000 {
            PerformanceImpactLevel::High
        } else if total_overhead_ns > 1000 {
            PerformanceImpactLevel::Medium
        } else {
            PerformanceImpactLevel::Low
        };

        PerformanceImpact {
            impact_level,
            estimated_overhead_ns: total_overhead_ns,
            memory_overhead_bytes: transfer_size / 10, // Assume 10% memory overhead
            cpu_overhead_percent: if total_overhead_ns > 5000 { 5.0 } else { 1.0 },
            recommendations: vec![
                "Consider batching small transfers".to_string(),
                "Use memory mapping for large transfers".to_string(),
                "Implement caching for frequently accessed data".to_string(),
            ],
        }
    }

    /// Generate mitigation recommendations based on risk assessment
    fn generate_mitigation_recommendations(
        &self,
        risk_assessment: &BoundaryRiskAssessment,
    ) -> Vec<String> {
        let mut recommendations = Vec::new();

        match risk_assessment.overall_risk_level {
            RiskLevel::Critical => {
                recommendations
                    .push("URGENT: Review and redesign boundary crossing strategy".to_string());
                recommendations.push("Implement comprehensive input validation".to_string());
                recommendations.push("Add runtime safety checks".to_string());
                recommendations
                    .push("Consider using safer alternatives to raw pointers".to_string());
            }
            RiskLevel::High => {
                recommendations.push("Implement additional safety checks".to_string());
                recommendations.push("Add comprehensive logging and monitoring".to_string());
                recommendations.push("Review memory ownership patterns".to_string());
            }
            RiskLevel::Medium => {
                recommendations.push("Monitor boundary crossing frequency".to_string());
                recommendations.push("Consider performance optimizations".to_string());
                recommendations.push("Document ownership transfer clearly".to_string());
            }
            RiskLevel::Low => {
                recommendations.push("Continue current practices".to_string());
                recommendations.push("Periodic review recommended".to_string());
            }
        }

        // Add specific recommendations based on risk factors
        for factor in &risk_assessment.risk_factors {
            recommendations.push(factor.mitigation.clone());
        }

        recommendations.dedup();
        recommendations
    }

    /// Get comprehensive boundary event statistics
    pub fn get_boundary_event_statistics(&self) -> TrackingResult<BoundaryEventStatistics> {
        let mut stats = BoundaryEventStatistics {
            total_events: 0,
            events_by_type: std::collections::HashMap::new(),
            risk_distribution: std::collections::HashMap::new(),
            average_transfer_size: 0.0,
            total_transfer_volume: 0,
            most_active_contexts: Vec::new(),
            security_incidents: 0,
            performance_issues: 0,
            analysis_timestamp: std::time::SystemTime::now()
                .duration_since(std::time::UNIX_EPOCH)
                .unwrap_or_default()
                .as_nanos(),
        };

        if let Ok(allocations) = self.enhanced_allocations.lock() {
            let mut context_activity: std::collections::HashMap<String, usize> =
                std::collections::HashMap::new();
            let mut total_size = 0usize;
            let mut event_count = 0usize;

            for allocation in allocations.values() {
                for event in &allocation.cross_boundary_events {
                    stats.total_events += 1;
                    event_count += 1;

                    // Count by event type
                    *stats
                        .events_by_type
                        .entry(format!("{:?}", event.event_type))
                        .or_insert(0) += 1;

                    // Track context activity
                    *context_activity
                        .entry(event.from_context.clone())
                        .or_insert(0) += 1;
                    *context_activity
                        .entry(event.to_context.clone())
                        .or_insert(0) += 1;

                    // Estimate transfer size (would need actual size tracking)
                    let estimated_size = allocation.base.size;
                    total_size += estimated_size;
                }
            }

            if event_count > 0 {
                stats.average_transfer_size = total_size as f64 / event_count as f64;
            }
            stats.total_transfer_volume = total_size;

            // Get most active contexts
            let mut context_vec: Vec<_> = context_activity.into_iter().collect();
            context_vec.sort_by(|a, b| b.1.cmp(&a.1));
            stats.most_active_contexts = context_vec.into_iter().take(10).collect();
        }

        Ok(stats)
    }

    /// Get statistics for unsafe and FFI operations
    pub fn get_stats(&self) -> UnsafeFFIStats {
        let allocations = self
            .enhanced_allocations
            .lock()
            .unwrap_or_else(|poisoned| poisoned.into_inner());
        let violations = self
            .violations
            .lock()
            .unwrap_or_else(|poisoned| poisoned.into_inner());

        let mut stats = UnsafeFFIStats::default();

        // Count different types of operations
        for allocation in allocations.values() {
            match &allocation.source {
                AllocationSource::UnsafeRust { .. } => {
                    stats.unsafe_blocks += 1;
                    stats.total_operations += 1;
                }
                AllocationSource::FfiC { .. } => {
                    stats.ffi_calls += 1;
                    stats.total_operations += 1;
                }
                AllocationSource::CrossBoundary { .. } => {
                    stats.total_operations += 1;
                }
                _ => {}
            }

            // Count safety violations
            stats.memory_violations += allocation.safety_violations.len();
        }

        // Add violations from the violations log
        stats.memory_violations += violations.len();

        // Calculate risk score (simplified)
        stats.risk_score = if stats.total_operations > 0 {
            let base_risk = (stats.unsafe_blocks as f64 * 1.0)
                + (stats.ffi_calls as f64 * 2.0)
                + (stats.memory_violations as f64 * 5.0);
            (base_risk / stats.total_operations as f64).min(10.0)
        } else {
            0.0
        };

        // Create operation list (simplified)
        for allocation in allocations.values() {
            let (op_type, risk_level, description) = match &allocation.source {
                AllocationSource::UnsafeRust {
                    unsafe_block_location,
                    ..
                } => (
                    UnsafeOperationType::UnsafeBlock,
                    RiskLevel::Medium,
                    format!("Unsafe block at {unsafe_block_location}"),
                ),
                AllocationSource::FfiC {
                    resolved_function, ..
                } => (
                    UnsafeOperationType::FfiCall,
                    RiskLevel::High,
                    format!(
                        "FFI call to {}::{}",
                        resolved_function.library_name, resolved_function.function_name
                    ),
                ),
                AllocationSource::CrossBoundary { .. } => (
                    UnsafeOperationType::CrossBoundaryTransfer,
                    RiskLevel::Medium,
                    "Cross-boundary memory transfer".to_string(),
                ),
                _ => continue,
            };

            stats.operations.push(UnsafeOperation {
                operation_type: op_type,
                location: "unknown".to_string(), // Could be enhanced with actual location
                risk_level,
                timestamp: allocation.base.timestamp_alloc as u128,
                description,
            });
        }

        // Limit operations to avoid huge JSON
        stats.operations.truncate(50);

        stats
    }

    /// Integrate with SafetyAnalyzer for enhanced reporting
    pub fn integrate_with_safety_analyzer(
        &self,
        safety_analyzer: &crate::analysis::SafetyAnalyzer,
    ) -> TrackingResult<()> {
        // Get current violations
        let violations = if let Ok(violations) = self.violations.lock() {
            violations.clone()
        } else {
            return Err(TrackingError::LockContention(
                "Failed to lock violations".to_string(),
            ));
        };

        // Get current allocations
        let allocations: Vec<crate::core::types::AllocationInfo> =
            if let Ok(enhanced_allocations) = self.enhanced_allocations.lock() {
                enhanced_allocations
                    .values()
                    .map(|ea| ea.base.clone())
                    .collect()
            } else {
                return Err(TrackingError::LockContention(
                    "Failed to lock allocations".to_string(),
                ));
            };

        // Generate unsafe reports for each violation
        for violation in &violations {
            let source = match violation {
                SafetyViolation::DoubleFree { .. } => crate::analysis::UnsafeSource::RawPointer {
                    operation: "double_free".to_string(),
                    location: "memory_violation".to_string(),
                },
                SafetyViolation::InvalidFree {
                    attempted_pointer, ..
                } => crate::analysis::UnsafeSource::RawPointer {
                    operation: "invalid_free".to_string(),
                    location: format!("0x{attempted_pointer:x}"),
                },
                SafetyViolation::PotentialLeak { .. } => {
                    crate::analysis::UnsafeSource::RawPointer {
                        operation: "potential_leak".to_string(),
                        location: "memory_leak".to_string(),
                    }
                }
                SafetyViolation::CrossBoundaryRisk { description, .. } => {
                    crate::analysis::UnsafeSource::FfiFunction {
                        library: "unknown".to_string(),
                        function: "cross_boundary".to_string(),
                        call_site: description.clone(),
                    }
                }
            };

            let _report_id =
                safety_analyzer.generate_unsafe_report(source, &allocations, &violations)?;
        }

        tracing::info!(
            "🔗 Integrated {} violations with SafetyAnalyzer",
            violations.len()
        );
        Ok(())
    }

    /// Integrate with MemoryPassportTracker for FFI boundary tracking
    pub fn integrate_with_passport_tracker(
        &self,
        passport_tracker: &crate::analysis::MemoryPassportTracker,
    ) -> TrackingResult<()> {
        if let Ok(enhanced_allocations) = self.enhanced_allocations.lock() {
            for (ptr, allocation) in enhanced_allocations.iter() {
                // Create passports for FFI allocations
                if allocation.ffi_tracked {
                    let _passport_id = passport_tracker.create_passport(
                        *ptr,
                        allocation.base.size,
                        "ffi_integration".to_string(),
                    )?;

                    // Record boundary events
                    for event in &allocation.cross_boundary_events {
                        let event_type = match event.event_type {
                            BoundaryEventType::RustToFfi => {
                                crate::analysis::PassportEventType::HandoverToFfi
                            }
                            BoundaryEventType::FfiToRust => {
                                crate::analysis::PassportEventType::ReclaimedByRust
                            }
                            BoundaryEventType::OwnershipTransfer => {
                                crate::analysis::PassportEventType::OwnershipTransfer
                            }
                            BoundaryEventType::SharedAccess => {
                                crate::analysis::PassportEventType::BoundaryAccess
                            }
                        };

                        passport_tracker.record_passport_event(
                            *ptr,
                            event_type,
                            event.to_context.clone(),
                            std::collections::HashMap::new(),
                        )?;
                    }
                }
            }
        }

        tracing::info!("🔗 Integrated FFI allocations with MemoryPassportTracker");
        Ok(())
    }

    /// Perform comprehensive safety analysis using integrated components
    pub fn perform_comprehensive_safety_analysis(
        &self,
    ) -> TrackingResult<crate::analysis::ComprehensiveSafetyReport> {
        // Initialize integrated components
        let safety_analyzer = crate::analysis::SafetyAnalyzer::default();
        let passport_tracker = crate::analysis::get_global_passport_tracker();

        // Integrate with components
        self.integrate_with_safety_analyzer(&safety_analyzer)?;
        self.integrate_with_passport_tracker(&passport_tracker)?;

        // Detect leaks at shutdown
        let leak_detection = passport_tracker.detect_leaks_at_shutdown();

        // Get reports and statistics
        let unsafe_reports = safety_analyzer.get_unsafe_reports();
        let memory_passports = passport_tracker.get_all_passports();
        let safety_stats = safety_analyzer.get_stats();
        let passport_stats = passport_tracker.get_stats();

        let report = crate::analysis::ComprehensiveSafetyReport {
            unsafe_reports,
            memory_passports,
            leak_detection,
            safety_stats,
            passport_stats,
            analysis_timestamp: std::time::SystemTime::now()
                .duration_since(std::time::UNIX_EPOCH)
                .unwrap_or_default()
                .as_secs(),
        };

        tracing::info!("📊 Generated comprehensive safety analysis report");
        Ok(report)
    }
}

/// Comprehensive safety analysis report
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
pub struct ComprehensiveSafetyReport {
    /// All unsafe operation reports
    pub unsafe_reports: std::collections::HashMap<String, crate::analysis::UnsafeReport>,
    /// All memory passports
    pub memory_passports: std::collections::HashMap<usize, crate::analysis::MemoryPassport>,
    /// Leak detection results
    pub leak_detection: crate::analysis::LeakDetectionResult,
    /// Safety analysis statistics
    pub safety_stats: crate::analysis::SafetyAnalysisStats,
    /// Passport tracker statistics
    pub passport_stats: crate::analysis::PassportTrackerStats,
    /// Analysis timestamp
    pub analysis_timestamp: u64,
}

/// Global unsafe/FFI tracker instance
static GLOBAL_UNSAFE_TRACKER: OnceLock<Arc<UnsafeFFITracker>> = OnceLock::new();

/// Get the global unsafe/FFI tracker instance
pub fn get_global_unsafe_tracker() -> Option<Arc<UnsafeFFITracker>> {
    GLOBAL_UNSAFE_TRACKER.get().cloned()
}

/// Initialize the global unsafe/FFI tracker
pub fn init_global_unsafe_tracker() -> Arc<UnsafeFFITracker> {
    GLOBAL_UNSAFE_TRACKER
        .get_or_init(|| Arc::new(UnsafeFFITracker::new()))
        .clone()
}

#[cfg(test)]
mod tests {
    use super::*;
    use std::sync::Arc;

    /// Helper function to create a test tracker
    fn create_test_tracker() -> UnsafeFFITracker {
        UnsafeFFITracker::new()
    }

    #[test]
    fn test_unsafe_ffi_tracker_creation() {
        let tracker = create_test_tracker();

        // Verify initial state
        assert!(tracker
            .get_enhanced_allocations()
            .expect("Should get enhanced allocations")
            .is_empty());
        assert!(tracker
            .get_safety_violations()
            .expect("Should get safety violations")
            .is_empty());
        assert!(tracker
            .get_c_library_stats()
            .expect("Should get C library stats")
            .is_empty());
    }

    #[test]
    fn test_unsafe_ffi_tracker_default() {
        let tracker = UnsafeFFITracker::default();

        // Verify default state
        assert!(tracker
            .get_enhanced_allocations()
            .expect("Should get enhanced allocations after reset")
            .is_empty());
        assert!(tracker
            .get_safety_violations()
            .expect("Should get safety violations after reset")
            .is_empty());
    }

    #[test]
    fn test_track_unsafe_allocation() {
        let tracker = create_test_tracker();
        let ptr = 0x1000;
        let size = 1024;
        let location = "test_file.rs:42:10".to_string();

        let result = tracker.track_unsafe_allocation(ptr, size, location.clone());
        assert!(result.is_ok());

        // Verify allocation was tracked
        let allocations = tracker.get_enhanced_allocations().unwrap();
        assert_eq!(allocations.len(), 1);

        let allocation = &allocations[0];
        assert_eq!(allocation.base.ptr, ptr);
        assert_eq!(allocation.base.size, size);

        // Verify it's marked as unsafe
        match &allocation.source {
            AllocationSource::UnsafeRust {
                unsafe_block_location,
                ..
            } => {
                assert_eq!(unsafe_block_location, &location);
            }
            _ => panic!("Expected UnsafeRust allocation source"),
        }
    }

    #[test]
    fn test_track_ffi_allocation() {
        let tracker = create_test_tracker();
        let ptr = 0x2000;
        let size = 512;
        let library_name = "libc".to_string();
        let function_name = "malloc".to_string();

        let result =
            tracker.track_ffi_allocation(ptr, size, library_name.clone(), function_name.clone());
        assert!(result.is_ok());

        // Verify allocation was tracked
        let allocations = tracker.get_enhanced_allocations().unwrap();
        assert_eq!(allocations.len(), 1);

        let allocation = &allocations[0];
        assert_eq!(allocation.base.ptr, ptr);
        assert_eq!(allocation.base.size, size);
        assert!(allocation.ffi_tracked);

        // Verify it's marked as FFI
        match &allocation.source {
            AllocationSource::FfiC {
                resolved_function, ..
            } => {
                assert_eq!(resolved_function.library_name, library_name);
                assert_eq!(resolved_function.function_name, function_name);
            }
            _ => panic!("Expected FfiC allocation source"),
        }
    }

    #[test]
    fn test_track_enhanced_deallocation_valid() {
        let tracker = create_test_tracker();
        let ptr = 0x3000;
        let size = 256;

        // First track an allocation
        tracker
            .track_unsafe_allocation(ptr, size, "test_location".to_string())
            .unwrap();

        // Then deallocate it
        let result = tracker.track_enhanced_deallocation(ptr);
        assert!(result.is_ok());

        // Verify allocation was removed
        let allocations = tracker.get_enhanced_allocations().unwrap();
        assert!(allocations.is_empty());
    }

    #[test]
    fn test_track_enhanced_deallocation_invalid_free() {
        let tracker = create_test_tracker();
        let ptr = 0x4000;

        // Try to free a pointer that was never allocated
        let result = tracker.track_enhanced_deallocation(ptr);
        assert!(result.is_err());

        // Verify violation was recorded
        let violations = tracker.get_safety_violations().unwrap();
        assert_eq!(violations.len(), 1);

        match &violations[0] {
            SafetyViolation::InvalidFree {
                attempted_pointer, ..
            } => {
                assert_eq!(*attempted_pointer, ptr);
            }
            _ => panic!("Expected InvalidFree violation"),
        }
    }

    #[test]
    fn test_track_enhanced_deallocation_double_free() {
        let tracker = create_test_tracker();
        let ptr = 0x5000;
        let size = 128;

        // Track allocation
        tracker
            .track_unsafe_allocation(ptr, size, "test_location".to_string())
            .unwrap();

        // First deallocation (should succeed)
        let result1 = tracker.track_enhanced_deallocation(ptr);
        assert!(result1.is_ok());

        // Second deallocation (should fail with double free)
        let result2 = tracker.track_enhanced_deallocation(ptr);
        assert!(result2.is_err());

        // Verify double free violation was recorded
        let violations = tracker.get_safety_violations().unwrap();
        assert_eq!(violations.len(), 1);

        match &violations[0] {
            SafetyViolation::DoubleFree { .. } => {
                // Expected
            }
            _ => panic!("Expected DoubleFree violation"),
        }
    }

    #[test]
    fn test_record_boundary_event() {
        let tracker = create_test_tracker();
        let ptr = 0x6000;
        let size = 1024;

        // Track allocation first
        tracker
            .track_unsafe_allocation(ptr, size, "test_location".to_string())
            .unwrap();

        // Record boundary event
        let result = tracker.record_boundary_event(
            ptr,
            BoundaryEventType::RustToFfi,
            "rust_context".to_string(),
            "ffi_context".to_string(),
        );
        assert!(result.is_ok());

        // Verify event was recorded
        let allocations = tracker.get_enhanced_allocations().unwrap();
        assert_eq!(allocations.len(), 1);

        let allocation = &allocations[0];
        assert_eq!(allocation.cross_boundary_events.len(), 1);

        let event = &allocation.cross_boundary_events[0];
        assert!(matches!(event.event_type, BoundaryEventType::RustToFfi));
        assert_eq!(event.from_context, "rust_context");
        assert_eq!(event.to_context, "ffi_context");
    }

    #[test]
    fn test_register_c_library() {
        let tracker = create_test_tracker();
        let library_name = "test_lib".to_string();
        let library_path = Some("/usr/lib/libtest.so".to_string());
        let library_version = Some("1.0.0".to_string());

        let result = tracker.register_c_library(
            library_name.clone(),
            library_path.clone(),
            library_version.clone(),
        );
        assert!(result.is_ok());

        // Verify library was registered
        let libraries = tracker.get_c_library_stats().unwrap();
        assert_eq!(libraries.len(), 1);

        let library = libraries.get(&library_name).unwrap();
        assert_eq!(library.library_name, library_name);
        assert_eq!(library.library_path, library_path);
        assert_eq!(library.library_version, library_version);
        assert_eq!(library.total_allocations, 0);
        assert_eq!(library.total_bytes_allocated, 0);
    }

    #[test]
    fn test_track_c_function_call() {
        let tracker = create_test_tracker();
        let library_name = "libc";
        let function_name = "malloc";
        let allocation_size = 1024;
        let execution_time_ns = 500;

        let result = tracker.track_c_function_call(
            library_name,
            function_name,
            allocation_size,
            execution_time_ns,
        );
        assert!(result.is_ok());

        // Verify function call was tracked
        let libraries = tracker.get_c_library_stats().unwrap();
        assert_eq!(libraries.len(), 1);

        let library = libraries.get(library_name).unwrap();
        assert_eq!(library.total_allocations, 1);
        assert_eq!(library.total_bytes_allocated, allocation_size);

        let function = library.functions_called.get(function_name).unwrap();
        assert_eq!(function.call_count, 1);
        assert_eq!(function.bytes_allocated, allocation_size);
        assert_eq!(function.average_allocation_size, allocation_size as f64);
        assert_eq!(
            function.performance_metrics.avg_execution_time_ns,
            execution_time_ns
        );
    }

    #[test]
    fn test_install_enhanced_libc_hook() {
        let tracker = create_test_tracker();
        let function_name = "malloc".to_string();
        let hook_method = HookInstallationMethod::Preload;

        let result = tracker.install_enhanced_libc_hook(function_name.clone(), hook_method);
        assert!(result.is_ok());

        // Verify hook was installed
        let hooks = tracker.get_libc_hook_info().unwrap();
        assert_eq!(hooks.len(), 1);

        let hook = hooks.get(&function_name).unwrap();
        assert_eq!(hook.base_info.original_function, function_name);
        assert!(matches!(
            hook.installation_details.installation_method,
            HookInstallationMethod::Preload
        ));
        assert!(hook.installation_details.installation_success);
    }

    #[test]
    fn test_create_and_register_passport() {
        let tracker = create_test_tracker();
        let ptr = 0x7000;
        let origin_context = "rust_main";
        let security_clearance = SecurityClearance::Public;

        let result = tracker.create_and_register_passport(ptr, origin_context, security_clearance);
        assert!(result.is_ok());

        let passport_id = result.unwrap();
        assert!(!passport_id.is_empty());

        // Verify passport was created
        let passports = tracker.get_memory_passports().unwrap();
        assert_eq!(passports.len(), 1);

        let passport = passports.get(&ptr).unwrap();
        assert_eq!(passport.passport_id, passport_id);
        assert_eq!(passport.origin.context, origin_context);
        assert!(matches!(
            passport.security_clearance,
            SecurityClearance::Public
        ));
        assert!(matches!(passport.validity_status, ValidityStatus::Valid));
    }

    #[test]
    fn test_stamp_passport() {
        let tracker = create_test_tracker();
        let ptr = 0x8000;

        // Create passport first
        tracker
            .create_and_register_passport(ptr, "rust_main", SecurityClearance::Public)
            .unwrap();

        // Stamp the passport
        let result =
            tracker.stamp_passport(ptr, "memory_access", "ffi_boundary", "UnsafeFFITracker");
        assert!(result.is_ok());

        // Verify stamp was added
        let passports = tracker.get_memory_passports().unwrap();
        let passport = passports.get(&ptr).unwrap();
        assert_eq!(passport.journey.len(), 1);

        let stamp = &passport.journey[0];
        assert_eq!(stamp.operation, "memory_access");
        assert_eq!(stamp.location, "ffi_boundary");
        assert_eq!(stamp.authority, "UnsafeFFITracker");
    }

    #[test]
    fn test_transfer_passport_ownership() {
        let tracker = create_test_tracker();
        let ptr = 0x9000;

        // Create passport first
        tracker
            .create_and_register_passport(ptr, "rust_main", SecurityClearance::Public)
            .unwrap();

        // Transfer ownership
        let result = tracker.transfer_passport_ownership(ptr, "ffi_context", "malloc");
        assert!(result.is_ok());

        // Verify ownership was transferred
        let passports = tracker.get_memory_passports().unwrap();
        let passport = passports.get(&ptr).unwrap();
        assert_eq!(passport.current_owner.owner_context, "ffi_context");
        assert_eq!(passport.current_owner.owner_function, "malloc");

        // Verify transfer was recorded in journey
        assert_eq!(passport.journey.len(), 1);
        assert_eq!(passport.journey[0].operation, "ownership_transfer");
    }

    #[test]
    fn test_revoke_passport() {
        let tracker = create_test_tracker();
        let ptr = 0xa000;

        // Create passport first
        tracker
            .create_and_register_passport(ptr, "rust_main", SecurityClearance::Public)
            .unwrap();

        // Revoke passport
        let result = tracker.revoke_passport(ptr, "memory_freed");
        assert!(result.is_ok());

        // Verify passport was revoked
        let passports = tracker.get_memory_passports().unwrap();
        let passport = passports.get(&ptr).unwrap();
        assert!(matches!(passport.validity_status, ValidityStatus::Revoked));

        // Verify revocation was recorded in journey
        assert_eq!(passport.journey.len(), 1);
        assert!(passport.journey[0].operation.contains("revoked"));
    }

    #[test]
    fn test_validate_passport() {
        let tracker = create_test_tracker();
        let ptr = 0xb000;

        // Track allocation first to make validation work properly
        tracker
            .track_unsafe_allocation(ptr, 1024, "test_location".to_string())
            .unwrap();

        // Create passport for the allocation
        tracker
            .create_or_update_passport(ptr, "create", "rust_main")
            .unwrap();

        // Validate passport
        let result = tracker.validate_passport(ptr);
        assert!(result.is_ok());
        let is_valid = result.unwrap();
        assert!(is_valid);

        // Verify passport was created and is valid in enhanced_allocations
        let allocations = tracker.get_enhanced_allocations().unwrap();
        assert_eq!(allocations.len(), 1);
        let allocation = &allocations[0];
        assert!(allocation.memory_passport.is_some());
        let passport = allocation.memory_passport.as_ref().unwrap();
        assert!(matches!(passport.validity_status, ValidityStatus::Valid));

        // Test validation with non-existent pointer
        let result = tracker.validate_passport(0xdead);
        assert!(result.is_ok());
        assert!(!result.unwrap()); // Should return false for non-existent allocation

        // Test passport functionality with memory_passports registry
        let ptr2 = 0xc000;
        tracker
            .create_and_register_passport(ptr2, "rust_main", SecurityClearance::Public)
            .unwrap();

        // Verify passport was created in memory_passports
        let passports = tracker.get_memory_passports().unwrap();
        assert_eq!(passports.len(), 1);
        let passport = passports.get(&ptr2).unwrap();
        assert!(matches!(passport.validity_status, ValidityStatus::Valid));

        // Revoke passport in memory_passports
        tracker.revoke_passport(ptr2, "test_revocation").unwrap();
        let passports = tracker.get_memory_passports().unwrap();
        let passport = passports.get(&ptr2).unwrap();
        assert!(matches!(passport.validity_status, ValidityStatus::Revoked));
    }

    #[test]
    fn test_detect_leaks() {
        let tracker = create_test_tracker();
        let ptr = 0xc000;
        let size = 1024;

        // Track allocation
        tracker
            .track_unsafe_allocation(ptr, size, "test_location".to_string())
            .unwrap();

        // Wait a bit to ensure allocation age exceeds threshold
        std::thread::sleep(std::time::Duration::from_millis(10));

        // Detect leaks with very low threshold (should detect the allocation)
        let result = tracker.detect_leaks(1); // 1ms threshold
        assert!(result.is_ok());

        let leaks = result.unwrap();
        // The leak detection might not always detect leaks immediately due to timing
        // So we check if we have leaks or if the allocation is still active
        if !leaks.is_empty() {
            match &leaks[0] {
                SafetyViolation::PotentialLeak { .. } => {
                    // Expected
                }
                _ => panic!("Expected PotentialLeak violation"),
            }
        } else {
            // If no leaks detected, verify allocation is still active
            let allocations = tracker.get_enhanced_allocations().unwrap();
            assert_eq!(allocations.len(), 1);
            assert!(allocations[0].base.is_active());
        }
    }

    #[test]
    fn test_analyze_cross_boundary_risks() {
        let tracker = create_test_tracker();
        let ptr = 0xd000;

        // Create passport with many boundary crossings
        tracker
            .create_and_register_passport(ptr, "rust_main", SecurityClearance::Public)
            .unwrap();

        // Add many stamps to simulate frequent boundary crossings
        for i in 0..15 {
            tracker
                .stamp_passport(ptr, &format!("operation_{i}"), "boundary", "test")
                .unwrap();
        }

        // Analyze risks
        let result = tracker.analyze_cross_boundary_risks();
        assert!(result.is_ok());

        let risks = result.unwrap();
        assert!(!risks.is_empty());

        // Should detect frequent boundary crossings
        let has_boundary_risk = risks
            .iter()
            .any(|risk| matches!(risk, SafetyViolation::CrossBoundaryRisk { .. }));
        assert!(has_boundary_risk);
    }

    #[test]
    fn test_get_stats() {
        let tracker = create_test_tracker();

        // Track some operations
        tracker
            .track_unsafe_allocation(0x1000, 1024, "unsafe_block".to_string())
            .unwrap();
        tracker
            .track_ffi_allocation(0x2000, 512, "libc".to_string(), "malloc".to_string())
            .unwrap();

        // Get stats
        let stats = tracker.get_stats();

        assert_eq!(stats.total_operations, 2);
        assert_eq!(stats.unsafe_blocks, 1);
        assert_eq!(stats.ffi_calls, 1);
        assert_eq!(stats.memory_violations, 0);
        assert!(stats.risk_score > 0.0);
        assert_eq!(stats.operations.len(), 2);
    }

    #[test]
    fn test_boundary_event_statistics() {
        let tracker = create_test_tracker();
        let ptr = 0xe000;

        // Track allocation and boundary events
        tracker
            .track_unsafe_allocation(ptr, 1024, "test_location".to_string())
            .unwrap();
        tracker
            .record_boundary_event(
                ptr,
                BoundaryEventType::RustToFfi,
                "rust".to_string(),
                "ffi".to_string(),
            )
            .unwrap();
        tracker
            .record_boundary_event(
                ptr,
                BoundaryEventType::FfiToRust,
                "ffi".to_string(),
                "rust".to_string(),
            )
            .unwrap();

        // Get statistics
        let result = tracker.get_boundary_event_statistics();
        assert!(result.is_ok());

        let stats = result.unwrap();
        assert_eq!(stats.total_events, 2);
        assert!(stats.events_by_type.contains_key("RustToFfi"));
        assert!(stats.events_by_type.contains_key("FfiToRust"));
        assert!(stats.average_transfer_size > 0.0);
        assert!(stats.total_transfer_volume > 0);
    }

    #[test]
    fn test_risk_level_serialization() {
        let risk_levels = vec![
            RiskLevel::Low,
            RiskLevel::Medium,
            RiskLevel::High,
            RiskLevel::Critical,
        ];

        for risk_level in risk_levels {
            let serialized = serde_json::to_string(&risk_level).expect("Failed to serialize");
            let _deserialized: RiskLevel =
                serde_json::from_str(&serialized).expect("Failed to deserialize");
        }
    }

    #[test]
    fn test_boundary_event_type_serialization() {
        let event_types = vec![
            BoundaryEventType::RustToFfi,
            BoundaryEventType::FfiToRust,
            BoundaryEventType::OwnershipTransfer,
            BoundaryEventType::SharedAccess,
        ];

        for event_type in event_types {
            let serialized = serde_json::to_string(&event_type).expect("Failed to serialize");
            let _deserialized: BoundaryEventType =
                serde_json::from_str(&serialized).expect("Failed to deserialize");
        }
    }

    #[test]
    fn test_security_clearance_serialization() {
        let clearances = vec![
            SecurityClearance::Public,
            SecurityClearance::Restricted,
            SecurityClearance::Confidential,
            SecurityClearance::Secret,
        ];

        for clearance in clearances {
            let serialized = serde_json::to_string(&clearance).expect("Failed to serialize");
            let _deserialized: SecurityClearance =
                serde_json::from_str(&serialized).expect("Failed to deserialize");
        }
    }

    #[test]
    fn test_global_tracker_initialization() {
        let tracker1 = init_global_unsafe_tracker();
        let tracker2 = init_global_unsafe_tracker();

        // Should return the same instance
        assert!(Arc::ptr_eq(&tracker1, &tracker2));
    }

    #[test]
    fn test_memory_protection_flags() {
        let flags = MemoryProtectionFlags {
            readable: true,
            writable: true,
            executable: false,
            shared: false,
        };

        assert!(flags.readable);
        assert!(flags.writable);
        assert!(!flags.executable);
        assert!(!flags.shared);
    }

    #[test]
    fn test_allocation_metadata() {
        let metadata = AllocationMetadata {
            requested_size: 1024,
            actual_size: 1024,
            alignment: 8,
            allocator_info: "test_allocator".to_string(),
            protection_flags: Some(MemoryProtectionFlags {
                readable: true,
                writable: true,
                executable: false,
                shared: false,
            }),
        };

        assert_eq!(metadata.requested_size, 1024);
        assert_eq!(metadata.actual_size, 1024);
        assert_eq!(metadata.alignment, 8);
        assert!(metadata.protection_flags.is_some());
    }

    #[test]
    fn test_comprehensive_workflow() {
        let tracker = create_test_tracker();

        // Register a C library
        tracker
            .register_c_library(
                "test_lib".to_string(),
                Some("/lib/libtest.so".to_string()),
                Some("1.0".to_string()),
            )
            .unwrap();

        // Track various allocations
        let ptr1 = 0x10000;
        let ptr2 = 0x20000;

        tracker
            .track_unsafe_allocation(ptr1, 1024, "unsafe_block".to_string())
            .unwrap();
        tracker
            .track_ffi_allocation(ptr2, 512, "test_lib".to_string(), "test_malloc".to_string())
            .unwrap();

        // Create passports
        tracker
            .create_and_register_passport(ptr1, "rust_main", SecurityClearance::Public)
            .unwrap();
        tracker
            .create_and_register_passport(ptr2, "ffi_lib", SecurityClearance::Restricted)
            .unwrap();

        // Record boundary events
        tracker
            .record_boundary_event(
                ptr1,
                BoundaryEventType::RustToFfi,
                "rust".to_string(),
                "ffi".to_string(),
            )
            .unwrap();

        // Track function calls
        tracker
            .track_c_function_call("test_lib", "test_malloc", 512, 1000)
            .unwrap();

        // Install hooks
        tracker
            .install_enhanced_libc_hook("malloc".to_string(), HookInstallationMethod::Preload)
            .unwrap();

        // Verify comprehensive state
        let allocations = tracker.get_enhanced_allocations().unwrap();
        assert_eq!(allocations.len(), 2);

        let libraries = tracker.get_c_library_stats().unwrap();
        assert_eq!(libraries.len(), 1);

        let passports = tracker.get_memory_passports().unwrap();
        assert_eq!(passports.len(), 2);

        let hooks = tracker.get_libc_hook_info().unwrap();
        assert_eq!(hooks.len(), 1);

        let stats = tracker.get_stats();
        assert_eq!(stats.total_operations, 2);
        assert_eq!(stats.unsafe_blocks, 1);
        assert_eq!(stats.ffi_calls, 1);

        // Clean up
        tracker.track_enhanced_deallocation(ptr1).unwrap();
        tracker.track_enhanced_deallocation(ptr2).unwrap();

        let final_allocations = tracker.get_enhanced_allocations().unwrap();
        assert!(final_allocations.is_empty());
    }
}