cc74183435
This modifies the MultiSigScriptV0 convenience func for creating a multisig script to return an error if the caller improperly calls it with a negative threshold.
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
// Copyright (c) 2021 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package stdscript
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// ErrorKind identifies a kind of error.
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type ErrorKind string
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// These constants are used to identify a specific ErrorKind.
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const (
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// ErrUnsupportedScriptVersion indicates that a given script version is not
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// supported.
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ErrUnsupportedScriptVersion = ErrorKind("ErrUnsupportedScriptVersion")
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// ErrNegativeRequiredSigs is returned from MultiSigScript when the
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// specified number of required signatures is negative.
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ErrNegativeRequiredSigs = ErrorKind("ErrNegativeRequiredSigs")
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// ErrTooManyRequiredSigs is returned from MultiSigScript when the
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// specified number of required signatures is larger than the number of
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// provided public keys.
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ErrTooManyRequiredSigs = ErrorKind("ErrTooManyRequiredSigs")
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// ErrPubKeyType is returned when a script contains invalid public keys.
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ErrPubKeyType = ErrorKind("ErrPubKeyType")
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// ErrTooMuchNullData is returned when attempting to generate a
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// provably-pruneable script with data that exceeds the maximum allowed
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// length.
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ErrTooMuchNullData = ErrorKind("ErrTooMuchNullData")
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)
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// Error satisfies the error interface and prints human-readable errors.
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func (e ErrorKind) Error() string {
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return string(e)
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}
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// Error identifies an script-related error.
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//
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// It has full support for errors.Is and errors.As, so the caller can ascertain
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// the specific reason for the error by checking the underlying error.
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type Error struct {
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Err error
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Description string
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}
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// Error satisfies the error interface and prints human-readable errors.
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func (e Error) Error() string {
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return e.Description
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}
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// Unwrap returns the underlying wrapped error.
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func (e Error) Unwrap() error {
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return e.Err
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}
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// makeError creates an Error given a set of arguments.
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func makeError(kind ErrorKind, desc string) Error {
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return Error{Err: kind, Description: desc}
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}
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