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Tags:
benchmark
code-generation
transaction-code-generation
execution-grounded-evaluation
blockchain
evm
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File size: 7,847 Bytes
edbc049 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 | """
ERC721 Transfer Validator
Validates that an ERC721 NFT was successfully transferred
"""
from typing import Dict, Any
class ERC721TransferValidator:
"""Validator for ERC721 NFT transfer transactions"""
def __init__(self, nft_address: str, to_address: str, token_id: int, **kwargs):
"""
Initialize validator
Args:
nft_address: ERC721 NFT contract address
to_address: Expected recipient address
token_id: NFT token ID that should be transferred
"""
if not nft_address:
raise ValueError("nft_address is required but was None or empty")
if not to_address:
raise ValueError("to_address is required but was None or empty")
self.expected_nft = nft_address.lower()
self.expected_recipient = to_address.lower()
self.token_id = token_id
self.max_score = 100
def validate(
self,
tx: Dict[str, Any],
receipt: Dict[str, Any],
state_before: Dict[str, Any],
state_after: Dict[str, Any]
) -> Dict[str, Any]:
"""
Validate the transaction execution results
Args:
tx: Transaction object
receipt: Transaction receipt
state_before: Blockchain state before transaction
state_after: Blockchain state after transaction
Returns:
Validation results including score and details
"""
score = 0
details = {}
checks = []
# Check 1: Transaction success (30 points)
tx_success = receipt.get('status') == 1
if tx_success:
score += 30
checks.append({
'name': 'Transaction Success',
'passed': True,
'points': 30,
'message': 'Transaction executed successfully'
})
else:
checks.append({
'name': 'Transaction Success',
'passed': False,
'points': 0,
'message': f"Transaction failed with status: {receipt.get('status')}"
})
return {
'score': score,
'max_score': self.max_score,
'passed': False,
'checks': checks,
'details': details
}
# Check 2: NFT contract address correct (20 points)
actual_to = tx.get('to', '').lower()
contract_correct = actual_to == self.expected_nft
if contract_correct:
score += 20
checks.append({
'name': 'NFT Contract',
'passed': True,
'points': 20,
'message': f'Correct NFT contract: {self.expected_nft}'
})
else:
checks.append({
'name': 'NFT Contract',
'passed': False,
'points': 0,
'message': f'Expected: {self.expected_nft}, Got: {actual_to}'
})
details['expected_nft'] = self.expected_nft
details['actual_to'] = actual_to
# Check 3: Function signature (20 points)
# ERC721 transferFrom function selector: 0x23b872dd (keccak256("transferFrom(address,address,uint256)"))
tx_data = tx.get('data', '0x')
if tx_data and len(tx_data) >= 10:
function_selector = tx_data[:10].lower()
expected_selector = '0x23b872dd' # transferFrom(address,address,uint256)
if function_selector == expected_selector:
score += 20
checks.append({
'name': 'Function Signature',
'passed': True,
'points': 20,
'message': 'Correct ERC721 transferFrom function signature'
})
# Decode parameters from data
try:
if len(tx_data) >= 202: # 0x(2) + selector(8) + from(64) + to(64) + tokenId(64) = 202
from_hex = tx_data[10:74] # Next 64 chars (32 bytes)
to_hex = tx_data[74:138] # Next 64 chars (32 bytes)
token_id_hex = tx_data[138:202] # Next 64 chars (32 bytes)
# Extract addresses (last 40 hex chars of the 64 char field)
from_addr = '0x' + from_hex[-40:].lower()
to_addr = '0x' + to_hex[-40:].lower()
token_id_value = int(token_id_hex, 16)
details['decoded_from'] = from_addr
details['decoded_to'] = to_addr
details['decoded_token_id'] = token_id_value
# Verify recipient address
if to_addr == self.expected_recipient:
details['recipient_address_correct'] = True
else:
details['recipient_address_correct'] = False
details['recipient_mismatch'] = f'Expected: {self.expected_recipient}, Got: {to_addr}'
# Verify token ID
if token_id_value == self.token_id:
details['token_id_correct'] = True
else:
details['token_id_correct'] = False
details['token_id_mismatch'] = f'Expected: {self.token_id}, Got: {token_id_value}'
except Exception as e:
details['decode_error'] = str(e)
else:
checks.append({
'name': 'Function Signature',
'passed': False,
'points': 0,
'message': f'Expected: {expected_selector}, Got: {function_selector}'
})
else:
checks.append({
'name': 'Function Signature',
'passed': False,
'points': 0,
'message': 'No data field or too short'
})
details['function_selector'] = tx_data[:10] if tx_data else None
# Check 4: NFT ownership transferred (30 points)
# Check if the NFT owner changed from agent to recipient
owner_before = state_before.get('nft_owner', '').lower()
owner_after = state_after.get('nft_owner', '').lower()
ownership_transferred = owner_after == self.expected_recipient
if ownership_transferred:
score += 30
checks.append({
'name': 'NFT Ownership Transferred',
'passed': True,
'points': 30,
'message': f'NFT #{self.token_id} ownership transferred to {self.expected_recipient}'
})
else:
checks.append({
'name': 'NFT Ownership Transferred',
'passed': False,
'points': 0,
'message': f'Expected owner: {self.expected_recipient}, Actual owner: {owner_after}'
})
details['owner_before'] = owner_before
details['owner_after'] = owner_after
details['expected_owner'] = self.expected_recipient
details['token_id'] = self.token_id
# Final result
passed = score >= self.max_score * 0.8 # 80% threshold
return {
'score': score,
'max_score': self.max_score,
'passed': passed,
'checks': checks,
'details': details
}
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