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Krypto Kajun 850223a953 fix(multicall): resolve critical multicall parsing corruption issues

- Added comprehensive bounds checking to prevent buffer overruns in multicall parsing
- Implemented graduated validation system (Strict/Moderate/Permissive) to reduce false positives
- Added LRU caching system for address validation with 10-minute TTL
- Enhanced ABI decoder with missing Universal Router and Arbitrum-specific DEX signatures
- Fixed duplicate function declarations and import conflicts across multiple files
- Added error recovery mechanisms with multiple fallback strategies
- Updated tests to handle new validation behavior for suspicious addresses
- Fixed parser test expectations for improved validation system
- Applied gofmt formatting fixes to ensure code style compliance
- Fixed mutex copying issues in monitoring package by introducing MetricsSnapshot
- Resolved critical security vulnerabilities in heuristic address extraction
- Progress: Updated TODO audit from 10% to 35% complete

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-10-17 00:12:55 -05:00

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Uniswap V4 Integration Plan

Overview

This document outlines the implementation plan for Uniswap V4 exchange support in the MEV bot. Uniswap V4 introduces hooks and a new architecture with the PoolManager contract that allows for more flexible and customizable pool behavior.

Contract Architecture

Core Contracts

PoolManager: 0x000000000022D473030F116dDEE9F6B7653f39281251 (placeholder)
PositionManager: 0x000000000022D473030F116dDEE9F6B7653f39281252 (placeholder)

Key Features

Hooks: Custom contracts that can run before/after swaps and liquidity operations
Concentrated Liquidity: Similar to V3 but with more flexibility
Flexible Fees: Dynamic fee structures
Position Management: More efficient position management

Core Functions

Swap Functions

exactInputSingle
exactOutputSingle
exactInput
exactOutput

Liquidity Functions

mint (add liquidity to a range)
burn (remove liquidity from a range)
increaseLiquidity
decreaseLiquidity
collect (collect fees and tokens)

Pool Management

getPool (get pool address by tokens and hooks)
getLiquidity (get liquidity at a tick)
getPosition (get liquidity position details)

Implementation Steps

Create UniswapV4 struct implementing the Exchange interface
Initialize connection to Uniswap V4 PoolManager
Handle hook-based pool creation and management
Implement swap functions with hook integration
Implement liquidity functions with hook support
Implement pricing functions using concentrated liquidity
Add support for hook-specific parameters
Implement gas estimation for hook operations
Add error handling for hook failures

Pricing Mechanisms

Concentrated Liquidity Pricing

Calculate price based on current tick and liquidity
Consider tick range and liquidity distribution
Implement dynamic fee calculations based on pool configuration
Account for hook-specific pricing adjustments

Hook Integration

Support for pre-swap hooks
Support for post-swap hooks
Custom fee calculations based on hooks
Position management with hooks

Testing Plan

Unit tests for all swap functions
Integration tests with mainnet fork
Hook-specific functionality tests
Edge case testing (zero amounts, max amounts)
Gas optimization verification
Slippage tolerance testing
Price accuracy verification
Hook failure scenario testing

Performance Considerations

Efficient hook execution to minimize gas costs
Batch operations where possible to reduce gas costs
Cache pool and hook information to reduce external calls
Optimize route selection for multi-hop swaps
Implement efficient price impact calculations
Consider hook-specific optimization strategies

Security Considerations

Validate all input parameters
Implement proper slippage protection
Verify hook contracts are legitimate
Prevent malicious hook execution
Check for reentrancy vulnerabilities in hook contracts
Sanitize all external data from hooks

Integration with MEV Bot

Identify Uniswap V4-specific arbitrage opportunities
Monitor hook-enabled pools for unique opportunities
Account for hook-specific execution costs
Coordinate with other exchanges for cross-exchange arbitrage
Consider hook-based MEV protection or opportunities
Optimize for V4's more flexible liquidity management

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