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core: fix bug with native contracts methods initialisation

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`NewNEO()` and `NewGAS()` methods are trying to initialise
both `onPersist` and `incBalance` methods of NEO and GAS AFTER
nep5TokenNative is set to the VALUE of created nep5 token.
In this situation an attemmpt to call the corresponding native contracts
methods (e.g. transfer native GAS) leads to contract invocation failure,
as far as `nep5TokenNative.incBalance` method is nil.

Fixed this by initializing both `onPersist` and `incBalance` methods
before getting the value of nep5 contract.
This commit is contained in:
Anna Shaleva 2020-05-14 21:01:56 +03:00
parent 4ebac5a069
commit c7a040ff81
2 changed files with 8 additions and 7 deletions
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7
pkg/core/native/native_gas.go
View file

@ -28,21 +28,22 @@ const initialGAS = 30000000
// NewGAS returns GAS native contract. // NewGAS returns GAS native contract.
func NewGAS() *GAS { func NewGAS() *GAS {
g := &GAS{}
nep5 := newNEP5Native(gasSyscallName) nep5 := newNEP5Native(gasSyscallName)
nep5.name = "GAS" nep5.name = "GAS"
nep5.symbol = "gas" nep5.symbol = "gas"
nep5.decimals = 8 nep5.decimals = 8
nep5.factor = GASFactor nep5.factor = GASFactor
nep5.onPersist = chainOnPersist(g.onPersist, g.OnPersist)
nep5.incBalance = g.increaseBalance
g := &GAS{nep5TokenNative: *nep5} g.nep5TokenNative = *nep5
desc := newDescriptor("getSysFeeAmount", smartcontract.IntegerType, desc := newDescriptor("getSysFeeAmount", smartcontract.IntegerType,
manifest.NewParameter("index", smartcontract.IntegerType)) manifest.NewParameter("index", smartcontract.IntegerType))
md := newMethodAndPrice(g.getSysFeeAmount, 1, smartcontract.NoneFlag) md := newMethodAndPrice(g.getSysFeeAmount, 1, smartcontract.NoneFlag)
g.AddMethod(md, desc, true) g.AddMethod(md, desc, true)
g.onPersist = chainOnPersist(g.onPersist, g.OnPersist)
g.incBalance = g.increaseBalance
return g return g
} }

8
pkg/core/native/native_neo.go
View file

@ -60,13 +60,16 @@ func makeValidatorKey(key *keys.PublicKey) []byte {
// NewNEO returns NEO native contract. // NewNEO returns NEO native contract.
func NewNEO() *NEO { func NewNEO() *NEO {
n := &NEO{}
nep5 := newNEP5Native(neoSyscallName) nep5 := newNEP5Native(neoSyscallName)
nep5.name = "NEO" nep5.name = "NEO"
nep5.symbol = "neo" nep5.symbol = "neo"
nep5.decimals = 0 nep5.decimals = 0
nep5.factor = 1 nep5.factor = 1
nep5.onPersist = chainOnPersist(n.onPersist, n.OnPersist)
nep5.incBalance = n.increaseBalance
n := &NEO{nep5TokenNative: *nep5} n.nep5TokenNative = *nep5
desc := newDescriptor("unclaimedGas", smartcontract.IntegerType, desc := newDescriptor("unclaimedGas", smartcontract.IntegerType,
manifest.NewParameter("account", smartcontract.Hash160Type), manifest.NewParameter("account", smartcontract.Hash160Type),
@ -97,9 +100,6 @@ func NewNEO() *NEO {
md = newMethodAndPrice(n.getNextBlockValidators, 1, smartcontract.NoneFlag) md = newMethodAndPrice(n.getNextBlockValidators, 1, smartcontract.NoneFlag)
n.AddMethod(md, desc, true) n.AddMethod(md, desc, true)
n.onPersist = chainOnPersist(n.onPersist, n.OnPersist)
n.incBalance = n.increaseBalance
return n return n
} }