mirror of
https://github.com/nspcc-dev/neo-go.git
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3875c0a923
1. We have all necessary information in manifest.json, so don't need config.yaml for deployment anymore. It also allow us to be consistent with C# cli (it uses only .manifest.json and .nef files for contract deployment) 2. Remove EntryPoint and Methods from ProjectConfig as compiler is able to generate this information by itself.
705 lines
21 KiB
Go
705 lines
21 KiB
Go
package smartcontract
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import (
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"bytes"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"syscall"
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"github.com/go-yaml/yaml"
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"github.com/nspcc-dev/neo-go/cli/flags"
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"github.com/nspcc-dev/neo-go/cli/options"
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"github.com/nspcc-dev/neo-go/pkg/compiler"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/encoding/address"
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"github.com/nspcc-dev/neo-go/pkg/rpc/request"
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"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/nef"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"github.com/pkg/errors"
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"github.com/urfave/cli"
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"golang.org/x/crypto/ssh/terminal"
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)
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var (
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errNoInput = errors.New("no input file was found, specify an input file with the '--in or -i' flag")
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errNoConfFile = errors.New("no config file was found, specify a config file with the '--config' or '-c' flag")
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errNoManifestFile = errors.New("no manifest file was found, specify a manifest file with the '--manifest' flag")
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errNoMethod = errors.New("no method specified for function invocation command")
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errNoWallet = errors.New("no wallet parameter found, specify it with the '--wallet or -w' flag")
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errNoScriptHash = errors.New("no smart contract hash was provided, specify one as the first argument")
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errNoSmartContractName = errors.New("no name was provided, specify the '--name or -n' flag")
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errFileExist = errors.New("A file with given smart-contract name already exists")
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walletFlag = cli.StringFlag{
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Name: "wallet, w",
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Usage: "wallet to use to get the key for transaction signing",
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}
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addressFlag = flags.AddressFlag{
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Name: "address, a",
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Usage: "address to use as transaction signee (and gas source)",
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}
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gasFlag = flags.Fixed8Flag{
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Name: "gas, g",
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Usage: "gas to add to the transaction",
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}
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)
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const (
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// smartContractTmpl is written to a file when used with `init` command.
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// %s is parsed to be the smartContractName
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smartContractTmpl = `package %s
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import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
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func Main(op string, args []interface{}) {
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runtime.Notify("Hello world!")
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}`
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// cosignersSeparator is a special value which is used to distinguish
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// parameters and cosigners for invoke* commands
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cosignersSeparator = "--"
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)
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// NewCommands returns 'contract' command.
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func NewCommands() []cli.Command {
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testInvokeScriptFlags := []cli.Flag{
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cli.StringFlag{
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Name: "in, i",
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Usage: "Input location of the .nef file that needs to be invoked",
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},
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}
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testInvokeScriptFlags = append(testInvokeScriptFlags, options.RPC...)
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deployFlags := []cli.Flag{
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cli.StringFlag{
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Name: "in, i",
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Usage: "Input file for the smart contract (*.nef)",
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},
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cli.StringFlag{
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Name: "manifest",
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Usage: "Manifest input file (*.manifest.json)",
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},
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walletFlag,
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addressFlag,
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gasFlag,
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}
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deployFlags = append(deployFlags, options.RPC...)
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invokeFunctionFlags := []cli.Flag{
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walletFlag,
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addressFlag,
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gasFlag,
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}
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invokeFunctionFlags = append(invokeFunctionFlags, options.RPC...)
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return []cli.Command{{
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Name: "contract",
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Usage: "compile - debug - deploy smart contracts",
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Subcommands: []cli.Command{
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{
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Name: "compile",
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Usage: "compile a smart contract to a .nef file",
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Action: contractCompile,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "in, i",
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Usage: "Input file for the smart contract to be compiled",
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},
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cli.StringFlag{
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Name: "out, o",
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Usage: "Output of the compiled contract",
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},
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cli.BoolFlag{
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Name: "verbose, v",
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Usage: "Print out additional information after a compiling",
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},
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cli.StringFlag{
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Name: "debug, d",
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Usage: "Emit debug info in a separate file",
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},
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cli.StringFlag{
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Name: "manifest, m",
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Usage: "Emit contract manifest (*.manifest.json) file into separate file using configuration input file (*.yml)",
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},
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cli.StringFlag{
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Name: "config, c",
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Usage: "Configuration input file (*.yml)",
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},
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},
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},
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{
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Name: "deploy",
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Usage: "deploy a smart contract (.nef with description)",
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Description: `Deploys given contract into the chain. The gas parameter is for additional
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gas to be added as a network fee to prioritize the transaction. It may also
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be required to add that to satisfy chain's policy regarding transaction size
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and the minimum size fee (so if transaction send fails, try adding 0.001 GAS
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to it).
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`,
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Action: contractDeploy,
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Flags: deployFlags,
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},
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{
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Name: "invokefunction",
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Usage: "invoke deployed contract on the blockchain",
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UsageText: "neo-go contract invokefunction -r endpoint -w wallet [-a address] [-g gas] scripthash [method] [arguments...] [--] [cosigners...]",
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Description: `Executes given (as a script hash) deployed script with the given method,
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arguments and cosigners. See testinvokefunction documentation for the details
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about parameters. It differs from testinvokefunction in that this command
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sends an invocation transaction to the network.
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`,
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Action: invokeFunction,
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Flags: invokeFunctionFlags,
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},
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{
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Name: "testinvokefunction",
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Usage: "invoke deployed contract on the blockchain (test mode)",
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UsageText: "neo-go contract testinvokefunction -r endpoint scripthash [method] [arguments...] [--] [cosigners...]",
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Description: `Executes given (as a script hash) deployed script with the given method,
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arguments and cosigners. If no method is given "" is passed to the script, if
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no arguments are given, an empty array is passed, if no cosigners are given,
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no array will be passed. All of the given arguments are encapsulated into
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array before invoking the script. The script thus should follow the regular
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convention of smart contract arguments (method string and an array of other
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arguments).
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Arguments always do have regular Neo smart contract parameter types, either
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specified explicitly or being inferred from the value. To specify the type
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manually use "type:value" syntax where the type is one of the following:
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'signature', 'bool', 'int', 'hash160', 'hash256', 'bytes', 'key' or 'string'.
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Array types are not currently supported.
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Given values are type-checked against given types with the following
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restrictions applied:
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* 'signature' type values should be hex-encoded and have a (decoded)
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length of 64 bytes.
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* 'bool' type values are 'true' and 'false'.
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* 'int' values are decimal integers that can be successfully converted
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from the string.
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* 'hash160' values are Neo addresses and hex-encoded 20-bytes long (after
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decoding) strings.
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* 'hash256' type values should be hex-encoded and have a (decoded)
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length of 32 bytes.
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* 'bytes' type values are any hex-encoded things.
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* 'key' type values are hex-encoded marshalled public keys.
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* 'string' type values are any valid UTF-8 strings. In the value's part of
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the string the colon looses it's special meaning as a separator between
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type and value and is taken literally.
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If no type is explicitly specified, it is inferred from the value using the
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following logic:
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- anything that can be interpreted as a decimal integer gets
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an 'int' type
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- 'true' and 'false' strings get 'bool' type
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- valid Neo addresses and 20 bytes long hex-encoded strings get 'hash160'
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type
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- valid hex-encoded public keys get 'key' type
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- 32 bytes long hex-encoded values get 'hash256' type
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- 64 bytes long hex-encoded values get 'signature' type
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- any other valid hex-encoded values get 'bytes' type
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- anything else is a 'string'
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Backslash character is used as an escape character and allows to use colon in
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an implicitly typed string. For any other characters it has no special
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meaning, to get a literal backslash in the string use the '\\' sequence.
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Examples:
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* 'int:42' is an integer with a value of 42
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* '42' is an integer with a value of 42
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* 'bad' is a string with a value of 'bad'
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* 'dead' is a byte array with a value of 'dead'
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* 'string:dead' is a string with a value of 'dead'
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* 'AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y' is a hash160 with a value
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of '23ba2703c53263e8d6e522dc32203339dcd8eee9'
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* '\4\2' is an integer with a value of 42
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* '\\4\2' is a string with a value of '\42'
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* 'string:string' is a string with a value of 'string'
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* 'string\:string' is a string with a value of 'string:string'
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* '03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c' is a
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key with a value of '03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c'
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Cosigners represent a set of Uint160 hashes with witness scopes and are used
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to verify hashes in System.Runtime.CheckWitness syscall. To specify cosigners
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use cosigner[:scope] syntax where
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* 'cosigner' is hex-encoded 160 bit (20 byte) LE value of cosigner's address,
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which could have '0x' prefix.
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* 'scope' is a comma-separated set of cosigner's scopes, which could be:
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- 'Global' - allows this witness in all contexts. This cannot be combined
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with other flags.
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- 'CalledByEntry' - means that this condition must hold: EntryScriptHash
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== CallingScriptHash. The witness/permission/signature
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given on first invocation will automatically expire if
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entering deeper internal invokes. This can be default
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safe choice for native NEO/GAS.
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- 'CustomContracts' - define valid custom contract hashes for witness check.
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- 'CustomGroups' - define custom pubkey for group members.
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If no scopes were specified, 'Global' used as default. If no cosigners were
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specified, no array will be passed. Note that scopes are properly handled by
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neo-go RPC server only. C# implementation does not support scopes capability.
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Examples:
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* '0000000009070e030d0f0e020d0c06050e030c02'
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* '0x0000000009070e030d0f0e020d0c06050e030c02'
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* '0x0000000009070e030d0f0e020d0c06050e030c02:Global'
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* '0000000009070e030d0f0e020d0c06050e030c02:CalledByEntry,CustomGroups'
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`,
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Action: testInvokeFunction,
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Flags: options.RPC,
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},
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{
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Name: "testinvokescript",
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Usage: "Invoke compiled AVM code in NEF format on the blockchain (test mode, not creating a transaction for it)",
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UsageText: "neo-go contract testinvokescript -r endpoint -i input.nef [cosigners...]",
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Description: `Executes given compiled AVM instructions in NEF format with the given set of
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cosigners. See testinvokefunction documentation for the details about parameters.
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`,
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Action: testInvokeScript,
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Flags: testInvokeScriptFlags,
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},
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{
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Name: "init",
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Usage: "initialize a new smart-contract in a directory with boiler plate code",
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Action: initSmartContract,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "name, n",
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Usage: "name of the smart-contract to be initialized",
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},
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cli.BoolFlag{
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Name: "skip-details, skip",
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Usage: "skip filling in the projects and contract details",
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},
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},
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},
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{
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Name: "inspect",
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Usage: "creates a user readable dump of the program instructions",
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Action: inspect,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "compile, c",
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Usage: "compile input file (it should be go code then)",
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},
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cli.StringFlag{
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Name: "in, i",
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Usage: "input file of the program (either .go or .nef)",
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},
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},
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},
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},
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}}
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}
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// initSmartContract initializes a given directory with some boiler plate code.
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func initSmartContract(ctx *cli.Context) error {
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contractName := ctx.String("name")
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if contractName == "" {
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return cli.NewExitError(errNoSmartContractName, 1)
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}
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// Check if the file already exists, if yes, exit
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if _, err := os.Stat(contractName); err == nil {
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return cli.NewExitError(errFileExist, 1)
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}
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basePath := contractName
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fileName := "main.go"
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// create base directory
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if err := os.Mkdir(basePath, os.ModePerm); err != nil {
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return cli.NewExitError(err, 1)
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}
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m := ProjectConfig{}
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b, err := yaml.Marshal(m)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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if err := ioutil.WriteFile(filepath.Join(basePath, "neo-go.yml"), b, 0644); err != nil {
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return cli.NewExitError(err, 1)
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}
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data := []byte(fmt.Sprintf(smartContractTmpl, contractName))
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if err := ioutil.WriteFile(filepath.Join(basePath, fileName), data, 0644); err != nil {
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return cli.NewExitError(err, 1)
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}
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fmt.Printf("Successfully initialized smart contract [%s]\n", contractName)
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return nil
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}
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func contractCompile(ctx *cli.Context) error {
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src := ctx.String("in")
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if len(src) == 0 {
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return cli.NewExitError(errNoInput, 1)
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}
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manifestFile := ctx.String("manifest")
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confFile := ctx.String("config")
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debugFile := ctx.String("debug")
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if len(confFile) == 0 && (len(manifestFile) != 0 || len(debugFile) != 0) {
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return cli.NewExitError(errNoConfFile, 1)
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}
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o := &compiler.Options{
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Outfile: ctx.String("out"),
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DebugInfo: debugFile,
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ManifestFile: manifestFile,
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}
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if len(confFile) != 0 {
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conf, err := parseContractConfig(confFile)
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if err != nil {
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return err
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}
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o.ContractFeatures = conf.GetFeatures()
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}
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result, err := compiler.CompileAndSave(src, o)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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if ctx.Bool("verbose") {
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fmt.Println(hex.EncodeToString(result))
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}
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return nil
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}
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func testInvokeFunction(ctx *cli.Context) error {
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return invokeInternal(ctx, false)
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}
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func invokeFunction(ctx *cli.Context) error {
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return invokeInternal(ctx, true)
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}
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func invokeInternal(ctx *cli.Context, signAndPush bool) error {
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var (
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err error
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gas util.Fixed8
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operation string
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params = make([]smartcontract.Parameter, 0)
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paramsStart = 1
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cosigners []transaction.Cosigner
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cosignersStart = 0
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resp *result.Invoke
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acc *wallet.Account
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)
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args := ctx.Args()
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if !args.Present() {
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return cli.NewExitError(errNoScriptHash, 1)
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}
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script := args[0]
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if len(args) <= 1 {
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return cli.NewExitError(errNoMethod, 1)
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}
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operation = args[1]
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paramsStart++
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if len(args) > paramsStart {
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for k, s := range args[paramsStart:] {
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if s == cosignersSeparator {
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cosignersStart = paramsStart + k + 1
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break
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}
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param, err := smartcontract.NewParameterFromString(s)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("failed to parse argument #%d: %v", k+paramsStart+1, err), 1)
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}
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params = append(params, *param)
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}
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}
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if len(args) >= cosignersStart && cosignersStart > 0 {
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for i, c := range args[cosignersStart:] {
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cosigner, err := parseCosigner(c)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("failed to parse cosigner #%d: %v", i+cosignersStart+1, err), 1)
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}
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cosigners = append(cosigners, cosigner)
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}
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}
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if signAndPush {
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gas = flags.Fixed8FromContext(ctx, "gas")
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acc, err = getAccFromContext(ctx)
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if err != nil {
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return err
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}
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}
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gctx, cancel := options.GetTimeoutContext(ctx)
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defer cancel()
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c, err := options.GetRPCClient(gctx, ctx)
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if err != nil {
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return err
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}
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resp, err = c.InvokeFunction(script, operation, params, cosigners)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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if signAndPush {
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if len(resp.Script) == 0 {
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return cli.NewExitError(errors.New("no script returned from the RPC node"), 1)
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}
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script, err := hex.DecodeString(resp.Script)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("bad script returned from the RPC node: %v", err), 1)
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}
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txHash, err := c.SignAndPushInvocationTx(script, acc, 0, gas)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("failed to push invocation tx: %v", err), 1)
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}
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fmt.Printf("Sent invocation transaction %s\n", txHash.StringLE())
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} else {
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b, err := json.MarshalIndent(resp, "", " ")
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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fmt.Println(string(b))
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}
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return nil
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}
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func testInvokeScript(ctx *cli.Context) error {
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src := ctx.String("in")
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if len(src) == 0 {
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return cli.NewExitError(errNoInput, 1)
|
|
}
|
|
|
|
b, err := ioutil.ReadFile(src)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
nefFile, err := nef.FileFromBytes(b)
|
|
if err != nil {
|
|
return cli.NewExitError(errors.Wrapf(err, "failed to restore .nef file"), 1)
|
|
}
|
|
|
|
args := ctx.Args()
|
|
var cosigners []transaction.Cosigner
|
|
if args.Present() {
|
|
for i, c := range args[:] {
|
|
cosigner, err := parseCosigner(c)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("failed to parse cosigner #%d: %v", i+1, err), 1)
|
|
}
|
|
cosigners = append(cosigners, cosigner)
|
|
}
|
|
}
|
|
|
|
gctx, cancel := options.GetTimeoutContext(ctx)
|
|
defer cancel()
|
|
|
|
c, err := options.GetRPCClient(gctx, ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
scriptHex := hex.EncodeToString(nefFile.Script)
|
|
resp, err := c.InvokeScript(scriptHex, cosigners)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
|
|
b, err = json.MarshalIndent(resp, "", " ")
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
|
|
fmt.Println(string(b))
|
|
|
|
return nil
|
|
}
|
|
|
|
// ProjectConfig contains project metadata.
|
|
type ProjectConfig struct {
|
|
HasStorage bool
|
|
IsPayable bool
|
|
Events []manifest.Event
|
|
}
|
|
|
|
// GetFeatures returns smartcontract features from the config.
|
|
func (p *ProjectConfig) GetFeatures() smartcontract.PropertyState {
|
|
var fs smartcontract.PropertyState
|
|
if p.IsPayable {
|
|
fs |= smartcontract.IsPayable
|
|
}
|
|
if p.HasStorage {
|
|
fs |= smartcontract.HasStorage
|
|
}
|
|
return fs
|
|
}
|
|
|
|
func inspect(ctx *cli.Context) error {
|
|
in := ctx.String("in")
|
|
compile := ctx.Bool("compile")
|
|
if len(in) == 0 {
|
|
return cli.NewExitError(errNoInput, 1)
|
|
}
|
|
b, err := ioutil.ReadFile(in)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
if compile {
|
|
b, err = compiler.Compile(bytes.NewReader(b))
|
|
if err != nil {
|
|
return cli.NewExitError(errors.Wrap(err, "failed to compile"), 1)
|
|
}
|
|
} else {
|
|
nefFile, err := nef.FileFromBytes(b)
|
|
if err != nil {
|
|
return cli.NewExitError(errors.Wrapf(err, "failed to restore .nef file"), 1)
|
|
}
|
|
b = nefFile.Script
|
|
}
|
|
v := vm.New()
|
|
v.LoadScript(b)
|
|
v.PrintOps()
|
|
|
|
return nil
|
|
}
|
|
|
|
func getAccFromContext(ctx *cli.Context) (*wallet.Account, error) {
|
|
var addr util.Uint160
|
|
|
|
wPath := ctx.String("wallet")
|
|
if len(wPath) == 0 {
|
|
return nil, cli.NewExitError(errNoWallet, 1)
|
|
}
|
|
|
|
wall, err := wallet.NewWalletFromFile(wPath)
|
|
if err != nil {
|
|
return nil, cli.NewExitError(err, 1)
|
|
}
|
|
addrFlag := ctx.Generic("address").(*flags.Address)
|
|
if addrFlag.IsSet {
|
|
addr = addrFlag.Uint160()
|
|
} else {
|
|
addr = wall.GetChangeAddress()
|
|
}
|
|
acc := wall.GetAccount(addr)
|
|
if acc == nil {
|
|
return nil, cli.NewExitError(fmt.Errorf("wallet contains no account for '%s'", address.Uint160ToString(addr)), 1)
|
|
}
|
|
|
|
fmt.Printf("Enter account %s password > ", address.Uint160ToString(addr))
|
|
rawPass, err := terminal.ReadPassword(syscall.Stdin)
|
|
fmt.Println()
|
|
if err != nil {
|
|
return nil, cli.NewExitError(err, 1)
|
|
}
|
|
pass := strings.TrimRight(string(rawPass), "\n")
|
|
err = acc.Decrypt(pass)
|
|
if err != nil {
|
|
return nil, cli.NewExitError(err, 1)
|
|
}
|
|
return acc, nil
|
|
}
|
|
|
|
// contractDeploy deploys contract.
|
|
func contractDeploy(ctx *cli.Context) error {
|
|
in := ctx.String("in")
|
|
if len(in) == 0 {
|
|
return cli.NewExitError(errNoInput, 1)
|
|
}
|
|
manifestFile := ctx.String("manifest")
|
|
if len(manifestFile) == 0 {
|
|
return cli.NewExitError(errNoManifestFile, 1)
|
|
}
|
|
gas := flags.Fixed8FromContext(ctx, "gas")
|
|
|
|
acc, err := getAccFromContext(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
f, err := ioutil.ReadFile(in)
|
|
if err != nil {
|
|
return cli.NewExitError(err, 1)
|
|
}
|
|
nefFile, err := nef.FileFromBytes(f)
|
|
if err != nil {
|
|
return cli.NewExitError(errors.Wrapf(err, "failed to restore .nef file"), 1)
|
|
}
|
|
|
|
manifestBytes, err := ioutil.ReadFile(manifestFile)
|
|
if err != nil {
|
|
return cli.NewExitError(errors.Wrapf(err, "failed to read manifest file"), 1)
|
|
}
|
|
m := &manifest.Manifest{}
|
|
err = json.Unmarshal(manifestBytes, m)
|
|
if err != nil {
|
|
return cli.NewExitError(errors.Wrapf(err, "failed to restore manifest file"), 1)
|
|
}
|
|
|
|
gctx, cancel := options.GetTimeoutContext(ctx)
|
|
defer cancel()
|
|
|
|
c, err := options.GetRPCClient(gctx, ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
txScript, sysfee, err := request.CreateDeploymentScript(nefFile.Script, m)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("failed to create deployment script: %v", err), 1)
|
|
}
|
|
|
|
txHash, err := c.SignAndPushInvocationTx(txScript, acc, sysfee, gas)
|
|
if err != nil {
|
|
return cli.NewExitError(fmt.Errorf("failed to push invocation tx: %v", err), 1)
|
|
}
|
|
fmt.Printf("Sent deployment transaction %s for contract %s\n", txHash.StringLE(), nefFile.Header.ScriptHash.StringLE())
|
|
return nil
|
|
}
|
|
|
|
func parseContractConfig(confFile string) (ProjectConfig, error) {
|
|
conf := ProjectConfig{}
|
|
confBytes, err := ioutil.ReadFile(confFile)
|
|
if err != nil {
|
|
return conf, cli.NewExitError(err, 1)
|
|
}
|
|
|
|
err = yaml.Unmarshal(confBytes, &conf)
|
|
if err != nil {
|
|
return conf, cli.NewExitError(fmt.Errorf("bad config: %v", err), 1)
|
|
}
|
|
return conf, nil
|
|
}
|
|
|
|
func parseCosigner(c string) (transaction.Cosigner, error) {
|
|
var (
|
|
err error
|
|
res = transaction.Cosigner{}
|
|
)
|
|
data := strings.SplitN(strings.ToLower(c), ":", 2)
|
|
s := data[0]
|
|
if len(s) == 2*util.Uint160Size+2 && s[0:2] == "0x" {
|
|
s = s[2:]
|
|
}
|
|
res.Account, err = util.Uint160DecodeStringLE(s)
|
|
if err != nil {
|
|
return res, err
|
|
}
|
|
if len(data) > 1 {
|
|
res.Scopes, err = transaction.ScopesFromString(data[1])
|
|
if err != nil {
|
|
return transaction.Cosigner{}, err
|
|
}
|
|
}
|
|
return res, nil
|
|
}
|