forked from TrueCloudLab/frostfs-contract
Merge pull request #14 from nspcc-dev/neo3/docs
Remove unused functions and update docs
This commit is contained in:
Alex Vanin
GitHub
commit
5c2d82a0b6
3 changed files with 71 additions and 711 deletions
75
README.md
75
README.md
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@ -1,43 +1,31 @@
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# NeoFS smart-contract
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This smart-contract controls list of NeoFS Inner Ring nodes and provides
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methods to deposit and withdraw assets. These assets are used as a payment and
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a reward for data storage.
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This smart-contract controls list of NeoFS Inner Ring nodes, user assets in
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NeoFS balance contract and stores NeoFS runtime configuration.
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## Getting Started
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This repository contains:
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- NeoFS smart-contract written in Go
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- Unit tests for the smart-contract
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- NeoFS smart-contract in Go
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### Prerequisites
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To compile smart-contract you need:
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- [neo-go](https://github.com/nspcc-dev/neo-go) >= 0.74.0
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To run tests you need:
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- [go](https://golang.org/dl/) >= 1.12
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- [neo-go](https://github.com/nspcc-dev/neo-go) >= 0.90.0
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## Compiling
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To compile smart contract run `make build` command. Compiled contract
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`neofs_contract.avm` will be placed in the same directory.
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`neofs_contract.nef` and manifest `config.json` will be placed in the same
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directory.
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```
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$ make build
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neo-go contract compile -i neofs_contract.go
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02a600c56b6a007bc46a517bc468164e656f2e52756e74696d652e476574547269676765726165880d9e640700006c756668164e656f2e53746f726167652e476574436f6e74657874616a527bc46a00c376064465706c6f798764c7016a52c30d496e6e657252696e674c6973747c657c0d6a537bc46a5
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3c3c000a0642f0019636f6e747261637420616c7265616479206465706c6f796564680f4e656f2e52756e74696d652e4c6f67f06a51c3c06a547bc46a54c35297009e6448003270726f76696465207061697273206f6620696e6e65722072696e67206164647265737320616e64207075626c6963206b65
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...
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c46a00c36a59c37c6592fd6476006a52c36a5ac36a59c3ad6469006a58c38b6a587bc4006a5b7bc46a5bc36a57c3c09f6444006a57c36a5bc3c36a59c387642b00156475706c6963617465207075626c6963206b657973680f4e656f2e52756e74696d652e4c6f67f06a5bc38b6a5b7bc462b7ff6a57c36
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a59c3787cc86a577bc46a53c30161936a537bc46234ff6a58c36a56c3a2640700516c75661e6e6f7420656e6f756768207665726966696564207369676e617475726573680f4e656f2e52756e74696d652e4c6f6761006c7566
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$ ls neofs_contract.avm
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neofs_contract.avm
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neo-go contract compile -i neofs_contract.go -c neofs_config.yml -m config.json
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$ ls neofs_contract.nef config.json
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config.json neofs_contract.nef
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```
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You can specify path to the `neo-go` binary with `NEOGO` environment variable:
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@ -46,51 +34,6 @@ You can specify path to the `neo-go` binary with `NEOGO` environment variable:
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$ NEOGO=/home/user/neo-go/bin/neo-go make build
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```
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## Running the tests
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`neofs_contract_test.go` file contains tests for most of the provided methods.
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It compiles smart-contract and uses instance of the NeoVM to run
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code.
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To test smart contract run `make tests` command.
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```
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$ make tests
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go mod vendor
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go test -mod=vendor -v -race github.com/nspcc-dev/neofs-contract
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=== RUN TestContract
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TestContract: neofs_contract_test.go:360: provide pairs of inner ring address and public key
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TestContract: neofs_contract_test.go:360: contract already deployed
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=== RUN TestContract/InnerRingAddress
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TestContract: neofs_contract_test.go:360: target element has been removed
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=== RUN TestContract/Deposit
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TestContract: neofs_contract_test.go:360: funds have been transfered
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=== RUN TestContract/Withdraw
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=== RUN TestContract/Withdraw/Double_Withdraw
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TestContract: neofs_contract_test.go:360: verification check has already been used
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=== RUN TestContract/InnerRingCandidateAdd
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=== RUN TestContract/InnerRingCandidateAdd/Double_InnerRingCandidateAdd
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TestContract: neofs_contract_test.go:360: is already in list
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=== RUN TestContract/InnerRingCandidateRemove
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=== RUN TestContract/InnerRingCandidateRemove/Remove_unknown_candidate
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TestContract: neofs_contract_test.go:360: target element has not been removed
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TestContract: neofs_contract_test.go:360: target element has not been removed
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=== RUN TestContract/InnerRingUpdate
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TestContract/InnerRingUpdate: neofs_contract_test.go:174: implement getIRExcludeCheque without neofs-node dependency
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--- PASS: TestContract (0.43s)
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--- PASS: TestContract/InnerRingAddress (0.00s)
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--- PASS: TestContract/Deposit (0.00s)
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--- PASS: TestContract/Withdraw (0.01s)
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--- PASS: TestContract/Withdraw/Double_Withdraw (0.00s)
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--- PASS: TestContract/InnerRingCandidateAdd (0.00s)
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--- PASS: TestContract/InnerRingCandidateAdd/Double_InnerRingCandidateAdd (0.00s)
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--- PASS: TestContract/InnerRingCandidateRemove (0.00s)
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--- PASS: TestContract/InnerRingCandidateRemove/Remove_unknown_candidate (0.00s)
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--- SKIP: TestContract/InnerRingUpdate (0.00s)
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PASS
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ok github.com/nspcc-dev/neofs-contract 0.453s
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```
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## License
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This project is licensed under the GPLv3 License - see the
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@ -1,5 +1,42 @@
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package smart_contract
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/*
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NeoFS Smart Contract for NEO3.0.
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Utility operations, executed once in deploy stage:
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- Init(pubKey, ... ) - setup initial inner ring nodes
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- InitConfig(key, value, key, value...) - setup initial NeoFS configuration
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User operations:
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- Deposit(script-hash, amount, script-hash(?)) - deposit gas assets to this script-hash address to NeoFS balance
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- Withdraw(script-hash, amount) - initialize gas asset withdraw from NeoFS balance
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- Bind(script-hash, pubKeys...) - bind public key with user's account to use it in NeoFS requests
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- Unbind(script-hash, pubKeys...) - unbind public key from user's account
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Inner ring list operations:
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- InnerRingList() - returns array of inner ring node keys
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- InnerRingCandidates() - returns array of inner ring candidate node keys
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- IsInnerRing(pubKey) - returns 'true' if key is inside of inner ring list
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- InnerRingCandidateAdd(pubKey) - adds key to the list of inner ring candidates
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- InnerRingCandidateRemove(pubKey) - removes key from the list of inner ring candidates
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- InnerRingUpdate(id, pubKeys...) - updates list of inner ring nodes with provided list of public keys
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Config operations:
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- Config(key) - returns value of NeoFS configuration with key 'key'
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- ListConfig() - returns array of all key-value pairs of NeoFS configuration
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- SetConfig(id, key, value) - set key-value pair as a NeoFS runtime configuration value
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Other utility operations:
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- Version - returns contract version
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- Cheque(id, script- hash, amount, script-hash) - sends gas assets back to the user if they were successfully
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locked in NeoFS balance contract
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Parameters:
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- (?) - parameter can be omitted
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- pubKey - 33 bytes of public key
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- id - unique byte sequence
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*/
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop/binary"
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"github.com/nspcc-dev/neo-go/pkg/interop/blockchain"
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@ -34,14 +71,19 @@ type (
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)
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const (
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// native gas token script hash
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tokenHash = "\x3b\x7d\x37\x11\xc6\xf0\xcc\xf9\xb1\xdc\xa9\x03\xd1\xbf\xa1\xd8\x96\xf1\x23\x8c"
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defaultCandidateFee = 100 * 1_0000_0000 // 100 Fixed8 Gas
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candidateFeeConfigKey = "InnerRingCandidateFee"
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version = 2
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innerRingKey = "innerring"
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voteKey = "ballots"
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candidatesKey = "candidates"
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cashedChequesKey = "cheques"
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blockDiff = 20 // change base on performance evaluation
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publicKeySize = 33
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minInnerRingSize = 3
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@ -58,29 +100,6 @@ func Main(op string, args []interface{}) interface{} {
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return false
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}
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/*
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Utility operations - they will be changed in production:
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- Deploy(params: address, pubKey, ... ) - setup initial inner ring state
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User operations:
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- InnerRingList() - get list of inner ring nodes addresses and public keys
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- InnerRingCandidateRemove(params: pubKey) - remove node with given public key from the inner ring candidate queue
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- InnerRingCandidateAdd(params: pubKey) - add node to the inner ring candidate queue
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- Deposit(params: pubKey, amount) - deposit GAS to the NeoFS account
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- Withdraw(params: withdrawCheque) - withdraw GAS from the NeoFS account
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- InnerRingUpdate(params: irCheque) - change list of inner ring nodes
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- IsInnerRing(params: pubKey) - returns true if pubKey presented in inner ring list
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- Version() - get version of the NeoFS smart-contract
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Params:
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- address - string of the valid multiaddress (github.com/multiformats/multiaddr)
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- pubKey - 33 byte public key
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- withdrawCheque - serialized structure, that confirms GAS transfer;
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contains inner ring signatures
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- irCheque - serialized structure, that confirms new inner ring node list;
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contains inner ring signatures
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*/
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ctx := storage.GetContext()
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switch op {
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@ -277,6 +296,7 @@ func Main(op string, args []interface{}) interface{} {
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}
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var keys [][]byte
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for i := 1; i < len(args); i++ {
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pub := args[i].([]byte)
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if len(pub) != publicKeySize {
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@ -367,7 +387,7 @@ func Main(op string, args []interface{}) interface{} {
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}
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key := args[0].([]byte)
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if len(key) != 33 {
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if len(key) != publicKeySize {
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panic("isInnerRing: incorrect public key")
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}
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@ -473,119 +493,6 @@ func Main(op string, args []interface{}) interface{} {
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panic("unknown operation")
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}
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// fixme: use strict type deserialization wrappers
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func getSerialized(ctx storage.Context, key string) interface{} {
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data := storage.Get(ctx, key).([]byte)
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if len(data) != 0 {
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return binary.Deserialize(data)
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}
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return nil
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}
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func delSerialized(ctx storage.Context, key string, value []byte) bool {
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data := storage.Get(ctx, key).([]byte)
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deleted := false
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var newList [][]byte
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if len(data) != 0 {
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lst := binary.Deserialize(data).([][]byte)
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for i := 0; i < len(lst); i++ {
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if util.Equals(value, lst[i]) {
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deleted = true
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} else {
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newList = append(newList, lst[i])
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}
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}
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if deleted {
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if len(newList) != 0 {
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data := binary.Serialize(newList)
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storage.Put(ctx, key, data)
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} else {
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storage.Delete(ctx, key)
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}
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runtime.Log("target element has been removed")
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return true
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}
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}
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runtime.Log("target element has not been removed")
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return false
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}
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func putSerialized(ctx storage.Context, key string, value interface{}) bool {
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data := storage.Get(ctx, key).([]byte)
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var lst []interface{}
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if len(data) != 0 {
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lst = binary.Deserialize(data).([]interface{})
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}
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lst = append(lst, value)
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data = binary.Serialize(lst)
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storage.Put(ctx, key, data)
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return true
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}
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func pubToScriptHash(pkey []byte) []byte {
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// pre := []byte{0x21}
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// buf := append(pre, pkey...)
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// buf = append(buf, 0xac)
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// h := crypto.Hash160(buf)
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//
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// return h
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// fixme: someday ripemd syscall will appear
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// or simply store script-hashes along with public key
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return []byte{0x0F, 0xED}
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}
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func containsCheck(lst []cheque, c cheque) bool {
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for i := 0; i < len(lst); i++ {
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if util.Equals(c, lst[i]) {
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return true
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}
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}
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return false
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}
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func containsPub(lst []node, elem []byte) bool {
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for i := 0; i < len(lst); i++ {
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e := lst[i]
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if util.Equals(elem, e.pub) {
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return true
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}
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}
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return false
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}
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func delSerializedIR(ctx storage.Context, key string, value []byte) bool {
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data := storage.Get(ctx, key).([]byte)
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deleted := false
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newList := []node{}
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if len(data) != 0 {
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lst := binary.Deserialize(data).([]node)
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for i := 0; i < len(lst); i++ {
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n := lst[i]
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if util.Equals(value, n.pub) {
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deleted = true
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} else {
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newList = append(newList, n)
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}
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}
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if deleted {
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data := binary.Serialize(newList)
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storage.Put(ctx, key, data)
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runtime.Log("target element has been removed")
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return true
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}
|
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}
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runtime.Log("target element has not been removed")
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return false
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}
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// innerRingInvoker returns public key of inner ring node that invoked contract.
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func innerRingInvoker(ir []node) []byte {
|
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for i := 0; i < len(ir); i++ {
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|
|
@ -598,9 +505,11 @@ func innerRingInvoker(ir []node) []byte {
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return nil
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}
|
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|
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// vote adds ballot for the decision with specific 'id' and returns amount
|
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// on unique voters for that decision.
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func vote(ctx storage.Context, id, from []byte) int {
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var (
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newCandidates []ballot
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newCandidates = []ballot{} // it is explicit declaration of empty slice, not nil
|
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candidates = getBallots(ctx)
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found = -1
|
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blockHeight = blockchain.GetHeight()
|
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|
|
@ -643,9 +552,11 @@ func vote(ctx storage.Context, id, from []byte) int {
|
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return found
|
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}
|
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|
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// removeVotes clears ballots of the decision that has benn aceepted by
|
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// inner ring nodes.
|
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func removeVotes(ctx storage.Context, id []byte) {
|
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var (
|
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newCandidates []ballot
|
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newCandidates = []ballot{} // it is explicit declaration of empty slice, not nil
|
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candidates = getBallots(ctx)
|
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)
|
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|
||||
|
|
@ -721,6 +632,7 @@ func addCheque(lst []cheque, c cheque) ([]cheque, bool) {
|
|||
}
|
||||
|
||||
lst = append(lst, c)
|
||||
|
||||
return lst, true
|
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}
|
||||
|
||||
|
|
@ -734,6 +646,7 @@ func addNode(lst []node, n node) ([]node, bool) {
|
|||
}
|
||||
|
||||
lst = append(lst, n)
|
||||
|
||||
return lst, true
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,496 +0,0 @@
|
|||
package smart_contract
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/ecdsa"
|
||||
"crypto/elliptic"
|
||||
"crypto/rand"
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"os"
|
||||
"testing"
|
||||
|
||||
"github.com/nspcc-dev/neo-go/pkg/compiler"
|
||||
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
|
||||
"github.com/nspcc-dev/neo-go/pkg/io"
|
||||
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
|
||||
"github.com/nspcc-dev/neo-go/pkg/util"
|
||||
"github.com/nspcc-dev/neo-go/pkg/vm"
|
||||
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
|
||||
crypto "github.com/nspcc-dev/neofs-crypto"
|
||||
"github.com/nspcc-dev/neofs-crypto/test"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
const contractTemplate = "./neofs_contract.go"
|
||||
|
||||
var (
|
||||
contractHash = util.Uint160{0x1, 0x2, 0x3, 0x4}
|
||||
// token hash is not random to run tests of .avm or .go files
|
||||
contractStr = string(contractHash[:])
|
||||
txHash = mustHex("3ca2575bd90129e3730c46ba3f163fcfd5fff11eaedb2b6aa3d76bd03ab8a890")
|
||||
)
|
||||
|
||||
type contract struct {
|
||||
script []byte
|
||||
privs []*ecdsa.PrivateKey
|
||||
cgasHash string
|
||||
}
|
||||
|
||||
func TestContract(t *testing.T) {
|
||||
const nodeCount = 6
|
||||
plug := newStoragePlugin(t)
|
||||
contract := initGoContract(t, contractTemplate, nodeCount)
|
||||
|
||||
plug.cgas[contractStr] = util.Fixed8FromInt64(1000)
|
||||
plug.invokeKey = crypto.MarshalPublicKey(&contract.privs[0].PublicKey)
|
||||
|
||||
var args []interface{}
|
||||
for i := range contract.privs {
|
||||
args = append(args, crypto.MarshalPublicKey(&contract.privs[i].PublicKey))
|
||||
}
|
||||
|
||||
v := initVM(contract, plug)
|
||||
loadArg(t, v, "Deploy", args)
|
||||
require.NoError(t, v.Run())
|
||||
|
||||
// double deploy
|
||||
v = initVM(contract, plug)
|
||||
loadArg(t, v, "Deploy", args)
|
||||
require.Error(t, v.Run())
|
||||
|
||||
t.Run("Deposit", func(t *testing.T) {
|
||||
const (
|
||||
amount = 1000
|
||||
balance = 4000
|
||||
)
|
||||
|
||||
before := plug.cgas[contractStr]
|
||||
gas := util.Fixed8FromInt64(amount)
|
||||
|
||||
key, err := keys.NewPublicKeyFromString("031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a")
|
||||
require.NoError(t, err)
|
||||
|
||||
plug.setCGASBalance(key.Bytes(), balance)
|
||||
|
||||
v := initVM(contract, plug)
|
||||
loadArg(t, v, "Deposit", []interface{}{key.Bytes(), int(gas.IntegralValue())})
|
||||
require.NoError(t, v.Run())
|
||||
|
||||
require.Equal(t, before+gas, plug.cgas[contractStr])
|
||||
require.Equal(t, util.Fixed8FromInt64(balance-amount), plug.cgas[string(key.GetScriptHash().BytesBE())])
|
||||
checkNotification(t, plug.notify, []byte("Deposit"), key.Bytes(), big.NewInt(int64(gas)), []byte{}, txHash)
|
||||
})
|
||||
|
||||
t.Run("Withdraw", func(t *testing.T) {
|
||||
const amount = 21
|
||||
|
||||
gas := util.Fixed8FromInt64(amount)
|
||||
|
||||
key, err := keys.NewPublicKeyFromString("031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a")
|
||||
require.NoError(t, err)
|
||||
|
||||
v := initVM(contract, plug)
|
||||
loadArg(t, v, "Withdraw", []interface{}{key.Bytes(), amount})
|
||||
require.NoError(t, v.Run())
|
||||
checkNotification(t, plug.notify, []byte("Withdraw"), key.Bytes(), big.NewInt(int64(gas)), txHash)
|
||||
})
|
||||
|
||||
t.Run("Cheque", func(t *testing.T) {
|
||||
const amount = 21
|
||||
|
||||
id := []byte("id")
|
||||
gas := util.Fixed8FromInt64(amount)
|
||||
user := randScriptHash()
|
||||
lockAcc := randScriptHash()
|
||||
contractGas := plug.cgas[contractStr]
|
||||
|
||||
// call it threshold amount of times
|
||||
for i := 0; i < 2*nodeCount/3+1; i++ {
|
||||
plug.invokeKey = crypto.MarshalPublicKey(&contract.privs[i].PublicKey)
|
||||
v := initVM(contract, plug)
|
||||
|
||||
loadArg(t, v, "Cheque", []interface{}{id, user, int(gas), lockAcc})
|
||||
require.NoError(t, v.Run())
|
||||
}
|
||||
|
||||
require.Equal(t, contractGas-gas, plug.cgas[contractStr])
|
||||
require.Equal(t, gas, plug.cgas[string(user)])
|
||||
checkNotification(t, plug.notify, []byte("Cheque"), id, user, big.NewInt(int64(gas)), lockAcc)
|
||||
|
||||
t.Run("Double cheque", func(t *testing.T) {
|
||||
v := initVM(contract, plug)
|
||||
|
||||
loadArg(t, v, "Cheque", []interface{}{id, user, int(gas), lockAcc})
|
||||
require.Error(t, v.Run())
|
||||
})
|
||||
})
|
||||
|
||||
t.Run("InnerRingCandidateAdd", func(t *testing.T) {
|
||||
v := initVM(contract, plug)
|
||||
before := plug.cgas[contractStr]
|
||||
|
||||
key := crypto.MarshalPublicKey(&test.DecodeKey(1).PublicKey)
|
||||
plug.setCGASBalance(key, 4000)
|
||||
|
||||
loadArg(t, v, "InnerRingCandidateAdd", []interface{}{key})
|
||||
require.NoError(t, v.Run())
|
||||
|
||||
fee := util.Fixed8FromInt64(1)
|
||||
|
||||
require.Equal(t, before+fee, plug.cgas[contractStr])
|
||||
require.Equal(t, util.Fixed8FromInt64(4000)-fee,
|
||||
plug.cgas[string(mustPKey(key).GetScriptHash().BytesBE())])
|
||||
require.True(t, bytes.Contains(plug.mem["InnerRingCandidates"], key))
|
||||
|
||||
t.Run("Double InnerRingCandidateAdd", func(t *testing.T) {
|
||||
v := initVM(contract, plug)
|
||||
loadArg(t, v, "InnerRingCandidateAdd", []interface{}{key})
|
||||
require.Error(t, v.Run())
|
||||
})
|
||||
})
|
||||
|
||||
t.Run("InnerRingCandidateRemove", func(t *testing.T) {
|
||||
key := crypto.MarshalPublicKey(&test.DecodeKey(2).PublicKey)
|
||||
plug.setCGASBalance(key, 4000)
|
||||
|
||||
v := initVM(contract, plug)
|
||||
loadArg(t, v, "InnerRingCandidateAdd", []interface{}{key})
|
||||
require.NoError(t, v.Run())
|
||||
require.True(t, bytes.Contains(plug.mem["InnerRingCandidates"], key))
|
||||
|
||||
t.Run("Remove unknown candidate", func(t *testing.T) {
|
||||
v := initVM(contract, plug)
|
||||
// unknown candidate
|
||||
badKey := crypto.MarshalPublicKey(&test.DecodeKey(3).PublicKey)
|
||||
loadArg(t, v, "InnerRingCandidateRemove", []interface{}{badKey})
|
||||
require.NoError(t, v.Run())
|
||||
require.True(t, bytes.Contains(plug.mem["InnerRingCandidates"], key))
|
||||
})
|
||||
|
||||
v = initVM(contract, plug)
|
||||
key = mustHex("031a6c6fbbdf02ca351745fa86b9ba5a9452d785ac4f7fc2b7548ca2a46c4fcf4a")
|
||||
loadArg(t, v, "InnerRingCandidateRemove", []interface{}{key})
|
||||
require.NoError(t, v.Run())
|
||||
require.False(t, bytes.Contains(plug.mem["InnerRingCandidates"], key))
|
||||
})
|
||||
}
|
||||
|
||||
func initGoContract(t *testing.T, path string, n int) *contract {
|
||||
f, err := os.Open(path)
|
||||
require.NoError(t, err)
|
||||
|
||||
defer f.Close()
|
||||
|
||||
buf, err := compiler.Compile(f)
|
||||
require.NoError(t, err)
|
||||
|
||||
return &contract{script: buf, privs: getKeys(t, n)}
|
||||
}
|
||||
|
||||
func getKeys(t *testing.T, n int) []*ecdsa.PrivateKey {
|
||||
privs := make([]*ecdsa.PrivateKey, n)
|
||||
for i := range privs {
|
||||
var err error
|
||||
|
||||
privs[i], err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
|
||||
require.NoError(t, err)
|
||||
}
|
||||
|
||||
return privs
|
||||
}
|
||||
|
||||
func randScriptHash() []byte {
|
||||
var scriptHash = make([]byte, 20)
|
||||
rand.Read(scriptHash)
|
||||
return scriptHash
|
||||
}
|
||||
|
||||
func mustHex(s string) []byte {
|
||||
result, err := hex.DecodeString(s)
|
||||
if err != nil {
|
||||
panic(fmt.Errorf("invalid hex: %v", err))
|
||||
}
|
||||
|
||||
return result
|
||||
}
|
||||
|
||||
func initVM(c *contract, plug *storagePlugin) *vm.VM {
|
||||
v := vm.New()
|
||||
v.Load(c.script)
|
||||
v.SetScriptGetter(plug.getScript)
|
||||
v.RegisterInteropGetter(plug.getInterop)
|
||||
|
||||
return v
|
||||
}
|
||||
|
||||
func loadArg(t *testing.T, v *vm.VM, operation string, params []interface{}) {
|
||||
arr := make([]vm.StackItem, len(params))
|
||||
for i := range arr {
|
||||
arr[i] = toStackItem(params[i])
|
||||
require.NotNil(t, arr[i], "invalid stack item")
|
||||
}
|
||||
v.Estack().PushVal(vm.NewArrayItem(arr))
|
||||
v.Estack().PushVal(operation)
|
||||
}
|
||||
|
||||
func toStackItem(v interface{}) vm.StackItem {
|
||||
switch val := v.(type) {
|
||||
case int:
|
||||
return vm.NewBigIntegerItem(int64(val))
|
||||
case string:
|
||||
return vm.NewByteArrayItem([]byte(val))
|
||||
case []byte:
|
||||
return vm.NewByteArrayItem(val)
|
||||
default:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
const cgasSyscall = "MockCGAS"
|
||||
|
||||
type kv struct {
|
||||
Operation string
|
||||
Key []byte
|
||||
Value []byte
|
||||
}
|
||||
|
||||
type storagePlugin struct {
|
||||
mem map[string][]byte
|
||||
cgas map[string]util.Fixed8
|
||||
interops map[uint32]vm.InteropFunc
|
||||
storageOps []kv
|
||||
notify []interface{}
|
||||
invokeKey []byte
|
||||
}
|
||||
|
||||
func newStoragePlugin(t *testing.T) *storagePlugin {
|
||||
s := &storagePlugin{
|
||||
mem: make(map[string][]byte),
|
||||
cgas: make(map[string]util.Fixed8),
|
||||
interops: make(map[uint32]vm.InteropFunc),
|
||||
}
|
||||
|
||||
s.interops[getID("Neo.Storage.Delete")] = s.Delete
|
||||
s.interops[getID("Neo.Storage.Get")] = s.Get
|
||||
s.interops[getID("Neo.Storage.GetContext")] = s.GetContext
|
||||
s.interops[getID("Neo.Storage.Put")] = s.Put
|
||||
s.interops[getID("Neo.Runtime.GetExecutingScriptHash")] = s.GetExecutingScriptHash
|
||||
s.interops[getID("Neo.Runtime.GetTrigger")] = s.GetTrigger
|
||||
s.interops[getID("Neo.Runtime.CheckWitness")] = s.CheckWitness
|
||||
s.interops[getID("System.ExecutionEngine.GetExecutingScriptHash")] = s.GetExecutingScriptHash
|
||||
s.interops[getID(cgasSyscall)] = s.CGASInvoke
|
||||
s.interops[getID("Neo.Runtime.Log")] = func(v *vm.VM) error {
|
||||
msg := string(v.Estack().Pop().Bytes())
|
||||
t.Log(msg)
|
||||
return nil
|
||||
}
|
||||
s.interops[getID("Neo.Runtime.Notify")] = func(v *vm.VM) error {
|
||||
val := v.Estack().Pop().Value()
|
||||
s.notify = append(s.notify, toInterface(val))
|
||||
return nil
|
||||
}
|
||||
s.interops[getID("System.ExecutionEngine.GetScriptContainer")] = s.GetScriptContainer
|
||||
s.interops[getID("Neo.Transaction.GetHash")] = s.GetHash
|
||||
s.interops[getID("Neo.Blockchain.GetHeight")] = s.GetHeight
|
||||
|
||||
return s
|
||||
}
|
||||
|
||||
func toInterface(val interface{}) interface{} {
|
||||
switch v := val.(type) {
|
||||
case []vm.StackItem:
|
||||
arr := make([]interface{}, len(v))
|
||||
for i, item := range v {
|
||||
arr[i] = toInterface(item)
|
||||
}
|
||||
return arr
|
||||
case vm.StackItem:
|
||||
return toInterface(v.Value())
|
||||
default:
|
||||
return v
|
||||
}
|
||||
}
|
||||
|
||||
func getID(name string) uint32 {
|
||||
return vm.InteropNameToID([]byte(name))
|
||||
}
|
||||
|
||||
func (s *storagePlugin) getInterop(id uint32) *vm.InteropFuncPrice {
|
||||
f := s.interops[id]
|
||||
if f != nil {
|
||||
return &vm.InteropFuncPrice{Func: f, Price: 1}
|
||||
}
|
||||
|
||||
switch id {
|
||||
case getID("Neo.Runtime.Serialize"):
|
||||
case getID("Neo.Runtime.Deserialize"):
|
||||
default:
|
||||
panic("unexpected interop")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func mustPKey(pub []byte) *keys.PublicKey {
|
||||
var pk keys.PublicKey
|
||||
if err := pk.DecodeBytes(pub); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return &pk
|
||||
}
|
||||
|
||||
func (s *storagePlugin) setCGASBalance(pub []byte, amount int64) {
|
||||
pk := mustPKey(pub)
|
||||
from := string(pk.GetScriptHash().BytesBE())
|
||||
s.cgas[from] = util.Fixed8FromInt64(amount)
|
||||
}
|
||||
|
||||
func (s *storagePlugin) CGASInvoke(v *vm.VM) error {
|
||||
op := string(v.Estack().Pop().Bytes())
|
||||
args := v.Estack().Pop().Array()
|
||||
|
||||
var result bool
|
||||
|
||||
switch op {
|
||||
case "transfer":
|
||||
from := args[0].Value().([]byte)
|
||||
to := args[1].Value().([]byte)
|
||||
if len(from) != 20 || len(to) != 20 {
|
||||
panic("invalid arguments")
|
||||
}
|
||||
|
||||
var amount util.Fixed8
|
||||
val := args[2].Value()
|
||||
switch v := val.(type) {
|
||||
case *big.Int:
|
||||
amount = util.Fixed8(v.Int64())
|
||||
case []byte:
|
||||
amount = util.Fixed8(emit.BytesToInt(v).Int64())
|
||||
default:
|
||||
panic("invalid amount")
|
||||
}
|
||||
|
||||
if s.cgas[string(from)] >= amount {
|
||||
s.cgas[string(from)] -= amount
|
||||
s.cgas[string(to)] += amount
|
||||
result = true
|
||||
}
|
||||
|
||||
default:
|
||||
panic("invalid operation")
|
||||
}
|
||||
|
||||
v.Estack().PushVal(result)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) getScript(u util.Uint160) ([]byte, bool) {
|
||||
var realHash util.Uint160
|
||||
copy(realHash[:], tokenHash[:])
|
||||
if u.Equals(realHash) {
|
||||
buf := io.NewBufBinWriter()
|
||||
emit.Syscall(buf.BinWriter, cgasSyscall)
|
||||
return buf.Bytes(), false
|
||||
}
|
||||
panic("wrong script hash")
|
||||
}
|
||||
|
||||
func (s *storagePlugin) GetTrigger(v *vm.VM) error {
|
||||
// todo: remove byte casting when neo-go issue will be resolved
|
||||
// https: //github.com/nspcc-dev/neo-go/issues/776
|
||||
v.Estack().PushVal(byte(trigger.Application))
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) CheckWitness(v *vm.VM) error {
|
||||
key := v.Estack().Pop().Value().([]byte)
|
||||
if bytes.Equal(key, s.invokeKey) {
|
||||
v.Estack().PushVal(true)
|
||||
} else {
|
||||
v.Estack().PushVal(false)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) GetExecutingScriptHash(v *vm.VM) error {
|
||||
var h util.Uint160
|
||||
copy(h[:], contractHash[:])
|
||||
v.Estack().PushVal(h.BytesBE())
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) GetScriptContainer(v *vm.VM) error {
|
||||
v.Estack().PushVal(true)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) GetHash(v *vm.VM) error {
|
||||
v.Estack().PushVal(txHash)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) GetHeight(v *vm.VM) error {
|
||||
v.Estack().PushVal(42)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) logStorage(op string, key, value []byte) {
|
||||
s.storageOps = append(s.storageOps, kv{
|
||||
Operation: op,
|
||||
Key: key,
|
||||
Value: value,
|
||||
})
|
||||
}
|
||||
|
||||
func (s *storagePlugin) Delete(v *vm.VM) error {
|
||||
v.Estack().Pop()
|
||||
key := v.Estack().Pop().Bytes()
|
||||
s.logStorage("Delete", key, s.mem[string(key)])
|
||||
delete(s.mem, string(key))
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) Put(v *vm.VM) error {
|
||||
v.Estack().Pop()
|
||||
key := v.Estack().Pop().Bytes()
|
||||
value := v.Estack().Pop().Bytes()
|
||||
s.logStorage("Put", key, value)
|
||||
s.mem[string(key)] = value
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) Get(v *vm.VM) error {
|
||||
v.Estack().Pop()
|
||||
item := v.Estack().Pop().Bytes()
|
||||
if val, ok := s.mem[string(item)]; ok {
|
||||
v.Estack().PushVal(val)
|
||||
s.logStorage("Get", item, val)
|
||||
return nil
|
||||
}
|
||||
v.Estack().PushVal([]byte{})
|
||||
s.logStorage("Get", item, nil)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *storagePlugin) GetContext(v *vm.VM) error {
|
||||
// Pushing anything on the stack here will work. This is just to satisfy
|
||||
// the compiler, thinking it has pushed the context ^^.
|
||||
v.Estack().PushVal(10)
|
||||
return nil
|
||||
}
|
||||
|
||||
func checkNotification(t *testing.T, store []interface{}, args ...interface{}) {
|
||||
ln := len(store)
|
||||
require.True(t, ln > 0)
|
||||
|
||||
notification := store[ln-1].([]interface{})
|
||||
require.Equal(t, len(args), len(notification))
|
||||
|
||||
for i := range args {
|
||||
require.Equal(t, args[i], notification[i])
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue