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graphql: validate block params #27876

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Aug 10, 2023
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3 changes: 3 additions & 0 deletions graphql/graphql.go
Original file line number Diff line number Diff line change
Expand Up @@ -1207,6 +1207,9 @@ func (r *Resolver) Block(ctx context.Context, args struct {
Number *Long
Hash *common.Hash
}) (*Block, error) {
if args.Number != nil && args.Hash != nil {
return nil, errors.New("only one of number or hash must be specified")
}
var numberOrHash rpc.BlockNumberOrHash
if args.Number != nil {
if *args.Number < 0 {
Expand Down