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rpc: adjust script creation with empty parameters list

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Always use NEWARRAY0 where possible, see
26d04a642a/src/neo/VM/Helper.cs (L41).

Compatibility is tested:
```
anna@kiwi:~/Documents/GitProjects/nspcc-dev/neo-go$ curl -d '{ "jsonrpc": "2.0", "id": 1, "method": "invokefunction", "params": ["50befd26fdf6e4d957c11e078b24ebce6291456f", "a", [] ]}' seed1.neo.org:10332 | json_pp
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   370    0   248  100   122    127     62  0:00:01  0:00:01 --:--:--   190
{
   "result" : {
      "notifications" : [],
      "stack" : [],
      "script" : "wh8MAWEMFG9FkWLO6ySLBx7BV9nk9v0m/b5QQWJ9W1I=",
      "gasconsumed" : "98403",
      "state" : "FAULT",
      "exception" : "Called Contract Does Not Exist: 0x50befd26fdf6e4d957c11e078b24ebce6291456f"
   },
   "jsonrpc" : "2.0",
   "id" : 1
}
```
This commit is contained in:
Anna Shaleva 2022-06-22 13:23:55 +03:00
parent 171af36ead
commit aa3a5fc492
2 changed files with 19 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
pkg/rpc/request/txBuilder.go
View file

@ -83,12 +83,10 @@ func ExpandArrayIntoScript(script *io.BinWriter, slice []Param) error {
if err != nil {
return err
}
err = ExpandArrayIntoScript(script, val)
err = ExpandArrayIntoScriptAndPack(script, val)
if err != nil {
return err
}
emit.Int(script, int64(len(val)))
emit.Opcodes(script, opcode.PACK)
case smartcontract.AnyType:
if fp.Value.IsNull() {
emit.Opcodes(script, opcode.PUSHNULL)
@ -100,6 +98,22 @@ func ExpandArrayIntoScript(script *io.BinWriter, slice []Param) error {
return script.Err
}
// ExpandArrayIntoScriptAndPack expands provided array into script and packs the
// resulting items in the array.
func ExpandArrayIntoScriptAndPack(script *io.BinWriter, slice []Param) error {
if len(slice) == 0 {
emit.Opcodes(script, opcode.NEWARRAY0)
return script.Err
}
err := ExpandArrayIntoScript(script, slice)
if err != nil {
return err
}
emit.Int(script, int64(len(slice)))
emit.Opcodes(script, opcode.PACK)
return script.Err
}
// CreateFunctionInvocationScript creates a script to invoke the given contract with
// the given parameters.
func CreateFunctionInvocationScript(contract util.Uint160, method string, param *Param) ([]byte, error) {
@ -107,12 +121,10 @@ func CreateFunctionInvocationScript(contract util.Uint160, method string, param
if param == nil {
emit.Opcodes(script.BinWriter, opcode.NEWARRAY0)
} else if slice, err := param.GetArray(); err == nil {
err = ExpandArrayIntoScript(script.BinWriter, slice)
err = ExpandArrayIntoScriptAndPack(script.BinWriter, slice)
if err != nil {
return nil, err
}
emit.Int(script.BinWriter, int64(len(slice)))
emit.Opcodes(script.BinWriter, opcode.PACK)
} else {
return nil, fmt.Errorf("failed to convert %s to script parameter", param)
}

2
pkg/rpc/request/tx_builder_test.go
View file

@ -29,7 +29,7 @@ func TestInvocationScriptCreationGood(t *testing.T) {
script: "wh8MAjQyDBRvRZFizuskiwcewVfZ5Pb9Jv2+UEFifVtS",
}, {
ps: Params{{RawMessage: []byte(`"a"`)}, {RawMessage: []byte(`[]`)}},
script: "EMAfDAFhDBRvRZFizuskiwcewVfZ5Pb9Jv2+UEFifVtS",
script: "wh8MAWEMFG9FkWLO6ySLBx7BV9nk9v0m/b5QQWJ9W1I=",
}, {
ps: Params{{RawMessage: []byte(`"a"`)}, {RawMessage: []byte(`[{"type": "ByteString", "value": "AwEtR+diEK7HO+Oas9GG4KQP6Nhr+j1Pq/2le6E7iPlq"}]`)}},
script: "DCEDAS1H52IQrsc745qz0YbgpA/o2Gv6PU+r/aV7oTuI+WoRwB8MAWEMFG9FkWLO6ySLBx7BV9nk9v0m/b5QQWJ9W1I=",