core: adjust contract script check on deploy
Reference implementation doesn't panic if the method offset is out of
the contract script bounds, see:
736c346b9d/src/neo/SmartContract/Helper.cs (L82)
and
a65487fa56/src/Neo.VM/Script.cs (L146).
This commit fixes T5 statediff at block #125000. Neo-go node FAULTed the
deploying transaction:
```
{
"version" : 0,
"sysfee" : "1000106065",
"validuntilblock" : 130758,
"script" : "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",
"hash" : "0x40302bcf2021f63a1c24f6009e154c3200f73ad2fe1462d7d599145823dbfa7e",
"witnesses" : [
{
"verification" : "DCECExn08eznGBdguHbcwI+R2//EtVdDx4qf6CeizHqOJgBBVuezJw==",
"invocation" : "DEBtoq+T9NrammQjuYnifco7KHCTk2v+woEJqJCUMr9IscS7PaZaN3FNzSt11yUglIi3T0CJ17KwArBOBvJ8kwq2"
}
],
"attributes" : [],
"signers" : [
{
"scopes" : "None",
"account" : "0x13a192c56738900f9918d7f1ec07d9d8c278b804"
}
],
"size" : 1360,
"nonce" : 1829882407,
"sender" : "NLLvsqs7AyBNmQT6NThUxYWDFwV5b1evaK",
"netfee" : "234352"
}
```
Transaction script contains malformed contract manifest (all methods
offsets are set to be 22, while the contract script lenght is 22):
```
{
"name" : "Nep17Token",
"groups" : [],
"extra" : {
"description" : "A Simple Nep-17 Contract",
"email" : "developer@neo.org",
"author" : "lazynode"
},
"permissions" : [
{
"contract" : "*",
"methods" : "*"
}
],
"features" : {},
"supportedstandards" : [
"NEP-17"
],
"abi" : {
"events" : [
{
"parameters" : [
{
"name" : "from",
"type" : "Hash160"
},
{
"type" : "Hash160",
"name" : "to"
},
{
"name" : "amount",
"type" : "Integer"
}
],
"name" : "Transfer"
}
],
"methods" : [
{
"safe" : true,
"offset" : 22,
"name" : "symbol",
"returntype" : "String",
"parameters" : []
},
{
"returntype" : "Integer",
"parameters" : [],
"safe" : true,
"offset" : 22,
"name" : "decimals"
},
{
"parameters" : [],
"returntype" : "Integer",
"name" : "totalSupply",
"safe" : true,
"offset" : 22
},
{
"parameters" : [
{
"name" : "owner",
"type" : "Hash160"
}
],
"returntype" : "Integer",
"name" : "balanceOf",
"offset" : 22,
"safe" : true
},
{
"name" : "transfer",
"offset" : 22,
"safe" : false,
"parameters" : [
{
"type" : "Hash160",
"name" : "from"
},
{
"name" : "to",
"type" : "Hash160"
},
{
"name" : "amount",
"type" : "Integer"
},
{
"name" : "data",
"type" : "Any"
}
],
"returntype" : "Boolean"
}
]
},
"trusts" : []
}
```
16bf7c1426