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core: add scopes check to cosigners in DecodeBinary

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This commit is contained in:
Anna Shaleva 2020-07-29 19:23:43 +03:00
parent 7865bc5925
commit 75f1c2d6f2
1 changed files with 10 additions and 0 deletions
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10
pkg/core/transaction/cosigner.go
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@ -1,6 +1,8 @@
package transaction
import (
"errors"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/util"
@ -33,6 +35,14 @@ func (c *Cosigner) EncodeBinary(bw *io.BinWriter) {
func (c *Cosigner) DecodeBinary(br *io.BinReader) {
br.ReadBytes(c.Account[:])
c.Scopes = WitnessScope(br.ReadB())
if c.Scopes & ^(Global|CalledByEntry|CustomContracts|CustomGroups) != 0 {
br.Err = errors.New("unknown witness scope")
return
}
if c.Scopes&Global != 0 && c.Scopes != Global {
br.Err = errors.New("global scope can not be combined with other scopes")
return
}
if c.Scopes&CustomContracts != 0 {
br.ReadArray(&c.AllowedContracts, maxSubitems)
}