mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-11-22 19:29:39 +00:00
361 lines
14 KiB
Go
361 lines
14 KiB
Go
package cmdargs
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/nspcc-dev/neo-go/cli/flags"
|
|
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
|
|
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
|
|
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
|
|
"github.com/nspcc-dev/neo-go/pkg/rpcclient/actor"
|
|
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
|
|
"github.com/nspcc-dev/neo-go/pkg/wallet"
|
|
"github.com/urfave/cli/v2"
|
|
)
|
|
|
|
const (
|
|
// CosignersSeparator marks the start of cosigners cli args.
|
|
CosignersSeparator = "--"
|
|
// ArrayStartSeparator marks the start of array cli arg.
|
|
ArrayStartSeparator = "["
|
|
// ArrayEndSeparator marks the end of array cli arg.
|
|
ArrayEndSeparator = "]"
|
|
)
|
|
|
|
const (
|
|
// ParamsParsingDoc is a documentation for parameters parsing.
|
|
ParamsParsingDoc = ` Arguments always do have regular Neo smart contract parameter types, either
|
|
specified explicitly or being inferred from the value. To specify the type
|
|
manually use "type:value" syntax where the type is one of the following:
|
|
'signature', 'bool', 'int', 'hash160', 'hash256', 'bytes', 'key' or 'string'.
|
|
Array types are also supported: use special space-separated '[' and ']'
|
|
symbols around array values to denote array bounds. Nested arrays are also
|
|
supported. Null parameter is supported via 'nil' keyword without additional
|
|
type specification.
|
|
|
|
There is ability to provide an argument of 'bytearray' type via file. Use a
|
|
special 'filebytes' argument type for this with a filepath specified after
|
|
the colon, e.g. 'filebytes:my_file.txt'.
|
|
|
|
Given values are type-checked against given types with the following
|
|
restrictions applied:
|
|
* 'signature' type values should be hex-encoded and have a (decoded)
|
|
length of 64 bytes.
|
|
* 'bool' type values are 'true' and 'false'.
|
|
* 'int' values are decimal integers that can be successfully converted
|
|
from the string.
|
|
* 'hash160' values are Neo addresses and hex-encoded 20-bytes long (after
|
|
decoding) strings.
|
|
* 'hash256' type values should be hex-encoded and have a (decoded)
|
|
length of 32 bytes.
|
|
* 'bytes' type values are any hex-encoded things.
|
|
* 'filebytes' type values are filenames with the argument value inside.
|
|
* 'key' type values are hex-encoded marshalled public keys.
|
|
* 'string' type values are any valid UTF-8 strings. In the value's part of
|
|
the string the colon looses it's special meaning as a separator between
|
|
type and value and is taken literally.
|
|
|
|
If no type is explicitly specified, it is inferred from the value using the
|
|
following logic:
|
|
- anything that can be interpreted as a decimal integer gets
|
|
an 'int' type
|
|
- 'nil' string gets 'Any' NEP-14 parameter type and nil value which corresponds
|
|
to Null stackitem
|
|
- 'true' and 'false' strings get 'bool' type
|
|
- valid Neo addresses and 20 bytes long hex-encoded strings get 'hash160'
|
|
type
|
|
- valid hex-encoded public keys get 'key' type
|
|
- 32 bytes long hex-encoded values get 'hash256' type
|
|
- 64 bytes long hex-encoded values get 'signature' type
|
|
- any other valid hex-encoded values get 'bytes' type
|
|
- anything else is a 'string'
|
|
|
|
Backslash character is used as an escape character and allows to use colon in
|
|
an implicitly typed string. For any other characters it has no special
|
|
meaning, to get a literal backslash in the string use the '\\' sequence.
|
|
|
|
Examples:
|
|
* 'int:42' is an integer with a value of 42
|
|
* '42' is an integer with a value of 42
|
|
* 'nil' is a parameter with Any NEP-14 type and nil value (corresponds to Null stackitem)
|
|
* 'bad' is a string with a value of 'bad'
|
|
* 'dead' is a byte array with a value of 'dead'
|
|
* 'string:dead' is a string with a value of 'dead'
|
|
* 'filebytes:my_data.txt' is bytes decoded from a content of my_data.txt
|
|
* 'NSiVJYZej4XsxG5CUpdwn7VRQk8iiiDMPM' is a hash160 with a value
|
|
of '682cca3ebdc66210e5847d7f8115846586079d4a'
|
|
* '\4\2' is an integer with a value of 42
|
|
* '\\4\2' is a string with a value of '\42'
|
|
* 'string:string' is a string with a value of 'string'
|
|
* 'string\:string' is a string with a value of 'string:string'
|
|
* '03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c' is a
|
|
key with a value of '03b209fd4f53a7170ea4444e0cb0a6bb6a53c2bd016926989cf85f9b0fba17a70c'
|
|
* '[ a b c ]' is an array with strings values 'a', 'b' and 'c'
|
|
* '[ a b [ c d ] e ]' is an array with 4 values: string 'a', string 'b',
|
|
array of two strings 'c' and 'd', string 'e'
|
|
* '[ ]' is an empty array`
|
|
|
|
// SignersParsingDoc is a documentation for signers parsing.
|
|
SignersParsingDoc = ` Signers represent a set of Uint160 hashes with witness scopes and are used
|
|
to verify hashes in System.Runtime.CheckWitness syscall. First signer is treated
|
|
as a sender. To specify signers use signer[:scope] syntax where
|
|
* 'signer' is a signer's address (as Neo address or hex-encoded 160 bit (20 byte)
|
|
LE value with or without '0x' prefix).
|
|
* 'scope' is a comma-separated set of cosigner's scopes, which could be:
|
|
- 'None' - default witness scope which may be used for the sender
|
|
to only pay fee for the transaction.
|
|
- 'Global' - allows this witness in all contexts. This cannot be combined
|
|
with other flags.
|
|
- 'CalledByEntry' - means that this condition must hold: EntryScriptHash
|
|
== CallingScriptHash. The witness/permission/signature
|
|
given on first invocation will automatically expire if
|
|
entering deeper internal invokes. This can be default
|
|
safe choice for native NEO/GAS.
|
|
- 'CustomContracts' - define valid custom contract hashes for witness check.
|
|
Hashes are be provided as hex-encoded LE value string.
|
|
At lest one hash must be provided. Multiple hashes
|
|
are separated by ':'.
|
|
- 'CustomGroups' - define custom public keys for group members. Public keys are
|
|
provided as short-form (1-byte prefix + 32 bytes) hex-encoded
|
|
values. At least one key must be provided. Multiple keys
|
|
are separated by ':'.
|
|
|
|
If no scopes were specified, 'CalledByEntry' used as default. If no signers were
|
|
specified, no array is passed. Note that scopes are properly handled by
|
|
neo-go RPC server only. C# implementation does not support scopes capability.
|
|
|
|
Examples:
|
|
* 'NNQk4QXsxvsrr3GSozoWBUxEmfag7B6hz5'
|
|
* 'NVquyZHoPirw6zAEPvY1ZezxM493zMWQqs:Global'
|
|
* '0x0000000009070e030d0f0e020d0c06050e030c02'
|
|
* '0000000009070e030d0f0e020d0c06050e030c02:CalledByEntry,` +
|
|
`CustomGroups:0206d7495ceb34c197093b5fc1cccf1996ada05e69ef67e765462a7f5d88ee14d0'
|
|
* '0000000009070e030d0f0e020d0c06050e030c02:CalledByEntry,` +
|
|
`CustomContracts:1011120009070e030d0f0e020d0c06050e030c02:0x1211100009070e030d0f0e020d0c06050e030c02'`
|
|
)
|
|
|
|
// GetSignersFromContext returns signers parsed from context args starting
|
|
// from the specified offset.
|
|
func GetSignersFromContext(ctx *cli.Context, offset int) ([]transaction.Signer, cli.ExitCoder) {
|
|
args := ctx.Args()
|
|
var (
|
|
signers []transaction.Signer
|
|
err error
|
|
)
|
|
if args.Present() && args.Len() > offset {
|
|
signers, err = ParseSigners(args.Slice()[offset:])
|
|
if err != nil {
|
|
return nil, cli.Exit(err, 1)
|
|
}
|
|
}
|
|
return signers, nil
|
|
}
|
|
|
|
// ParseSigners returns array of signers parsed from their string representation.
|
|
func ParseSigners(args []string) ([]transaction.Signer, error) {
|
|
var signers []transaction.Signer
|
|
for i, c := range args {
|
|
cosigner, err := parseCosigner(c)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to parse signer #%d: %w", i, err)
|
|
}
|
|
signers = append(signers, cosigner)
|
|
}
|
|
return signers, nil
|
|
}
|
|
|
|
func parseCosigner(c string) (transaction.Signer, error) {
|
|
var (
|
|
err error
|
|
res = transaction.Signer{
|
|
Scopes: transaction.CalledByEntry,
|
|
}
|
|
)
|
|
data := strings.SplitN(c, ":", 2)
|
|
s := data[0]
|
|
res.Account, err = flags.ParseAddress(s)
|
|
if err != nil {
|
|
return res, err
|
|
}
|
|
|
|
if len(data) == 1 {
|
|
return res, nil
|
|
}
|
|
|
|
res.Scopes = 0
|
|
scopes := strings.Split(data[1], ",")
|
|
for _, s := range scopes {
|
|
sub := strings.Split(s, ":")
|
|
scope, err := transaction.ScopesFromString(sub[0])
|
|
if err != nil {
|
|
return transaction.Signer{}, err
|
|
}
|
|
if scope == transaction.Global && res.Scopes&^transaction.Global != 0 ||
|
|
scope != transaction.Global && res.Scopes&transaction.Global != 0 {
|
|
return transaction.Signer{}, errors.New("Global scope can not be combined with other scopes")
|
|
}
|
|
|
|
res.Scopes |= scope
|
|
|
|
switch scope {
|
|
case transaction.CustomContracts:
|
|
if len(sub) == 1 {
|
|
return transaction.Signer{}, errors.New("CustomContracts scope must refer to at least one contract")
|
|
}
|
|
for _, s := range sub[1:] {
|
|
addr, err := flags.ParseAddress(s)
|
|
if err != nil {
|
|
return transaction.Signer{}, err
|
|
}
|
|
|
|
res.AllowedContracts = append(res.AllowedContracts, addr)
|
|
}
|
|
case transaction.CustomGroups:
|
|
if len(sub) == 1 {
|
|
return transaction.Signer{}, errors.New("CustomGroups scope must refer to at least one group")
|
|
}
|
|
for _, s := range sub[1:] {
|
|
pub, err := keys.NewPublicKeyFromString(s)
|
|
if err != nil {
|
|
return transaction.Signer{}, err
|
|
}
|
|
|
|
res.AllowedGroups = append(res.AllowedGroups, pub)
|
|
}
|
|
}
|
|
}
|
|
return res, nil
|
|
}
|
|
|
|
// GetDataFromContext returns data parameter from context args.
|
|
func GetDataFromContext(ctx *cli.Context) (int, any, cli.ExitCoder) {
|
|
var (
|
|
data any
|
|
offset int
|
|
params []smartcontract.Parameter
|
|
err error
|
|
)
|
|
args := ctx.Args()
|
|
if args.Present() {
|
|
offset, params, err = ParseParams(args.Slice(), true)
|
|
if err != nil {
|
|
return offset, nil, cli.Exit(fmt.Errorf("unable to parse 'data' parameter: %w", err), 1)
|
|
}
|
|
if len(params) > 1 {
|
|
return offset, nil, cli.Exit("'data' should be represented as a single parameter", 1)
|
|
}
|
|
if len(params) != 0 {
|
|
data, err = smartcontract.ExpandParameterToEmitable(params[0])
|
|
if err != nil {
|
|
return offset, nil, cli.Exit(fmt.Sprintf("failed to convert 'data' to emitable type: %s", err.Error()), 1)
|
|
}
|
|
}
|
|
}
|
|
return offset, data, nil
|
|
}
|
|
|
|
// EnsureNone returns an error if there are any positional arguments present.
|
|
// It can be used to check for them in commands that don't accept arguments.
|
|
func EnsureNone(ctx *cli.Context) cli.ExitCoder {
|
|
if ctx.Args().Present() {
|
|
return cli.Exit(fmt.Errorf("additional arguments given while this command expects none"), 1)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ParseParams extracts array of smartcontract.Parameter from the given args and
|
|
// returns the number of handled words, the array itself and an error.
|
|
// `calledFromMain` denotes whether the method was called from the outside or
|
|
// recursively and used to check if CosignersSeparator and ArrayEndSeparator are
|
|
// allowed to be in `args` sequence.
|
|
func ParseParams(args []string, calledFromMain bool) (int, []smartcontract.Parameter, error) {
|
|
res := []smartcontract.Parameter{}
|
|
for k := 0; k < len(args); {
|
|
s := args[k]
|
|
switch s {
|
|
case CosignersSeparator:
|
|
if calledFromMain {
|
|
return k + 1, res, nil // `1` to convert index to numWordsRead
|
|
}
|
|
return 0, []smartcontract.Parameter{}, errors.New("invalid array syntax: missing closing bracket")
|
|
case ArrayStartSeparator:
|
|
numWordsRead, array, err := ParseParams(args[k+1:], false)
|
|
if err != nil {
|
|
return 0, nil, fmt.Errorf("failed to parse array: %w", err)
|
|
}
|
|
res = append(res, smartcontract.Parameter{
|
|
Type: smartcontract.ArrayType,
|
|
Value: array,
|
|
})
|
|
k += 1 + numWordsRead // `1` for opening bracket
|
|
case ArrayEndSeparator:
|
|
if calledFromMain {
|
|
return 0, nil, errors.New("invalid array syntax: missing opening bracket")
|
|
}
|
|
return k + 1, res, nil // `1`to convert index to numWordsRead
|
|
default:
|
|
param, err := smartcontract.NewParameterFromString(s)
|
|
if err != nil {
|
|
// '--' argument is skipped by urfave/cli library, which leads
|
|
// to [--, addr:scope] being transformed to [addr:scope] and
|
|
// interpreted as a parameter if other positional arguments are not present.
|
|
// Here we fallback to parsing cosigners in this specific case to
|
|
// create a better user experience ('-- addr:scope' vs '-- -- addr:scope').
|
|
if k == 0 {
|
|
if _, err := parseCosigner(s); err == nil {
|
|
return 0, nil, nil
|
|
}
|
|
}
|
|
return 0, nil, fmt.Errorf("failed to parse argument #%d: %w", k+1, err)
|
|
}
|
|
res = append(res, *param)
|
|
k++
|
|
}
|
|
}
|
|
if calledFromMain {
|
|
return len(args), res, nil
|
|
}
|
|
return 0, []smartcontract.Parameter{}, errors.New("invalid array syntax: missing closing bracket")
|
|
}
|
|
|
|
// GetSignersAccounts returns the list of signers combined with the corresponding
|
|
// accounts from the provided wallet.
|
|
func GetSignersAccounts(senderAcc *wallet.Account, wall *wallet.Wallet, signers []transaction.Signer, accScope transaction.WitnessScope) ([]actor.SignerAccount, error) {
|
|
signersAccounts := make([]actor.SignerAccount, 0, len(signers)+1)
|
|
sender := senderAcc.ScriptHash()
|
|
signersAccounts = append(signersAccounts, actor.SignerAccount{
|
|
Signer: transaction.Signer{
|
|
Account: sender,
|
|
Scopes: accScope,
|
|
},
|
|
Account: senderAcc,
|
|
})
|
|
for i, s := range signers {
|
|
if s.Account == sender {
|
|
signersAccounts[0].Signer = s
|
|
continue
|
|
}
|
|
signerAcc := wall.GetAccount(s.Account)
|
|
if signerAcc == nil {
|
|
return nil, fmt.Errorf("no account was found in the wallet for signer #%d (%s)", i, address.Uint160ToString(s.Account))
|
|
}
|
|
signersAccounts = append(signersAccounts, actor.SignerAccount{
|
|
Signer: s,
|
|
Account: signerAcc,
|
|
})
|
|
}
|
|
return signersAccounts, nil
|
|
}
|
|
|
|
// EnsureNotEmpty returns a function that checks if the flag with the given name
|
|
// is not empty.
|
|
func EnsureNotEmpty(flagName string) func(*cli.Context, string) error {
|
|
return func(ctx *cli.Context, name string) error {
|
|
if ctx.String(flagName) == "" {
|
|
return cli.Exit(fmt.Errorf("required flag --%s is empty", flagName), 1)
|
|
}
|
|
return nil
|
|
}
|
|
}
|