850223a953
- 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>
101 lines
2.5 KiB
Go
101 lines
2.5 KiB
Go
package arbitrage
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import (
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"fmt"
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"math/big"
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"github.com/fraktal/mev-beta/pkg/math"
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)
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var sharedDecimalConverter = math.NewDecimalConverter()
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// universalFromWei converts a wei-denominated big.Int into a UniversalDecimal with 18 decimals.
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// It gracefully handles nil values by returning a zero amount.
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func universalFromWei(dec *math.DecimalConverter, value *big.Int, symbol string) *math.UniversalDecimal {
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if dec == nil {
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dec = sharedDecimalConverter
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}
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if value == nil {
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zero, _ := math.NewUniversalDecimal(big.NewInt(0), 18, symbol)
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return zero
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}
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return dec.FromWei(value, 18, symbol)
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}
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func universalOrFromWei(dec *math.DecimalConverter, decimal *math.UniversalDecimal, fallback *big.Int, decimals uint8, symbol string) *math.UniversalDecimal {
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if decimal != nil {
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return decimal
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}
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if fallback == nil {
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zero, _ := math.NewUniversalDecimal(big.NewInt(0), decimals, symbol)
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return zero
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}
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if dec == nil {
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dc := sharedDecimalConverter
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return dc.FromWei(fallback, decimals, symbol)
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}
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return dec.FromWei(fallback, decimals, symbol)
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}
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func floatStringFromDecimal(ud *math.UniversalDecimal, precision int) string {
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if precision < 0 {
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precision = int(ud.Decimals)
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}
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if ud == nil {
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if precision <= 0 {
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return "0"
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}
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return fmt.Sprintf("0.%0*d", precision, 0)
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}
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if ud.Decimals == 0 {
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return ud.Value.String()
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}
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numerator := new(big.Int).Set(ud.Value)
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denominator := new(big.Int).Exp(big.NewInt(10), big.NewInt(int64(ud.Decimals)), nil)
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rat := new(big.Rat).SetFrac(numerator, denominator)
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return rat.FloatString(precision)
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}
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func ethAmountString(dec *math.DecimalConverter, decimal *math.UniversalDecimal, wei *big.Int) string {
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if dec == nil {
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dec = sharedDecimalConverter
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}
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ud := universalOrFromWei(dec, decimal, wei, 18, "ETH")
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return floatStringFromDecimal(ud, 6)
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}
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func gweiAmountString(dec *math.DecimalConverter, decimal *math.UniversalDecimal, wei *big.Int) string {
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if dec == nil {
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dec = sharedDecimalConverter
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}
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if decimal != nil {
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return floatStringFromDecimal(decimal, 2)
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}
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if wei == nil {
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return "0.00"
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}
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numerator := new(big.Rat).SetInt(wei)
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denominator := new(big.Rat).SetInt(big.NewInt(1_000_000_000))
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return new(big.Rat).Quo(numerator, denominator).FloatString(2)
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}
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func formatEther(wei *big.Int) string {
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return ethAmountString(sharedDecimalConverter, nil, wei)
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}
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func formatEtherFromWei(wei *big.Int) string {
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return formatEther(wei)
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}
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func formatGweiFromWei(wei *big.Int) string {
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return gweiAmountString(sharedDecimalConverter, nil, wei)
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}
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