+++ /dev/null
-// Copyright (c) 2014-2016 The btcsuite developers
-// Use of this source code is governed by an ISC
-// license that can be found in the LICENSE file.
-
-package blockchain
-
-import (
- "fmt"
-)
-
-// DeploymentError identifies an error that indicates a deployment ID was
-// specified that does not exist.
-type DeploymentError uint32
-
-// Error returns the assertion error as a human-readable string and satisfies
-// the error interface.
-func (e DeploymentError) Error() string {
- return fmt.Sprintf("deployment ID %d does not exist", uint32(e))
-}
-
-// AssertError identifies an error that indicates an internal code consistency
-// issue and should be treated as a critical and unrecoverable error.
-type AssertError string
-
-// Error returns the assertion error as a human-readable string and satisfies
-// the error interface.
-func (e AssertError) Error() string {
- return "assertion failed: " + string(e)
-}
-
-// ErrorCode identifies a kind of error.
-type ErrorCode int
-
-// These constants are used to identify a specific RuleError.
-const (
- // ErrDuplicateBlock indicates a block with the same hash already
- // exists.
- ErrDuplicateBlock ErrorCode = iota
-
- // ErrBlockTooBig indicates the serialized block size exceeds the
- // maximum allowed size.
- ErrBlockTooBig
-
- // ErrBlockWeightTooHigh indicates that the block's computed weight
- // metric exceeds the maximum allowed value.
- ErrBlockWeightTooHigh
-
- // ErrBlockVersionTooOld indicates the block version is too old and is
- // no longer accepted since the majority of the network has upgraded
- // to a newer version.
- ErrBlockVersionTooOld
-
- // ErrInvalidTime indicates the time in the passed block has a precision
- // that is more than one second. The chain consensus rules require
- // timestamps to have a maximum precision of one second.
- ErrInvalidTime
-
- // ErrTimeTooOld indicates the time is either before the median time of
- // the last several blocks per the chain consensus rules or prior to the
- // most recent checkpoint.
- ErrTimeTooOld
-
- // ErrTimeTooNew indicates the time is too far in the future as compared
- // the current time.
- ErrTimeTooNew
-
- // ErrDifficultyTooLow indicates the difficulty for the block is lower
- // than the difficulty required by the most recent checkpoint.
- ErrDifficultyTooLow
-
- // ErrUnexpectedDifficulty indicates specified bits do not align with
- // the expected value either because it doesn't match the calculated
- // valued based on difficulty regarted rules or it is out of the valid
- // range.
- ErrUnexpectedDifficulty
-
- // ErrHighHash indicates the block does not hash to a value which is
- // lower than the required target difficultly.
- ErrHighHash
-
- // ErrBadMerkleRoot indicates the calculated merkle root does not match
- // the expected value.
- ErrBadMerkleRoot
-
- // ErrBadCheckpoint indicates a block that is expected to be at a
- // checkpoint height does not match the expected one.
- ErrBadCheckpoint
-
- // ErrForkTooOld indicates a block is attempting to fork the block chain
- // before the most recent checkpoint.
- ErrForkTooOld
-
- // ErrCheckpointTimeTooOld indicates a block has a timestamp before the
- // most recent checkpoint.
- ErrCheckpointTimeTooOld
-
- // ErrNoTransactions indicates the block does not have a least one
- // transaction. A valid block must have at least the coinbase
- // transaction.
- ErrNoTransactions
-
- // ErrTooManyTransactions indicates the block has more transactions than
- // are allowed.
- ErrTooManyTransactions
-
- // ErrNoTxInputs indicates a transaction does not have any inputs. A
- // valid transaction must have at least one input.
- ErrNoTxInputs
-
- // ErrNoTxOutputs indicates a transaction does not have any outputs. A
- // valid transaction must have at least one output.
- ErrNoTxOutputs
-
- // ErrTxTooBig indicates a transaction exceeds the maximum allowed size
- // when serialized.
- ErrTxTooBig
-
- // ErrBadTxOutValue indicates an output value for a transaction is
- // invalid in some way such as being out of range.
- ErrBadTxOutValue
-
- // ErrDuplicateTxInputs indicates a transaction references the same
- // input more than once.
- ErrDuplicateTxInputs
-
- // ErrBadTxInput indicates a transaction input is invalid in some way
- // such as referencing a previous transaction outpoint which is out of
- // range or not referencing one at all.
- ErrBadTxInput
-
- // ErrMissingTxOut indicates a transaction output referenced by an input
- // either does not exist or has already been spent.
- ErrMissingTxOut
-
- // ErrUnfinalizedTx indicates a transaction has not been finalized.
- // A valid block may only contain finalized transactions.
- ErrUnfinalizedTx
-
- // ErrDuplicateTx indicates a block contains an identical transaction
- // (or at least two transactions which hash to the same value). A
- // valid block may only contain unique transactions.
- ErrDuplicateTx
-
- // ErrOverwriteTx indicates a block contains a transaction that has
- // the same hash as a previous transaction which has not been fully
- // spent.
- ErrOverwriteTx
-
- // ErrImmatureSpend indicates a transaction is attempting to spend a
- // coinbase that has not yet reached the required maturity.
- ErrImmatureSpend
-
- // ErrSpendTooHigh indicates a transaction is attempting to spend more
- // value than the sum of all of its inputs.
- ErrSpendTooHigh
-
- // ErrBadFees indicates the total fees for a block are invalid due to
- // exceeding the maximum possible value.
- ErrBadFees
-
- // ErrTooManySigOps indicates the total number of signature operations
- // for a transaction or block exceed the maximum allowed limits.
- ErrTooManySigOps
-
- // ErrFirstTxNotCoinbase indicates the first transaction in a block
- // is not a coinbase transaction.
- ErrFirstTxNotCoinbase
-
- // ErrMultipleCoinbases indicates a block contains more than one
- // coinbase transaction.
- ErrMultipleCoinbases
-
- // ErrBadCoinbaseScriptLen indicates the length of the signature script
- // for a coinbase transaction is not within the valid range.
- ErrBadCoinbaseScriptLen
-
- // ErrBadCoinbaseValue indicates the amount of a coinbase value does
- // not match the expected value of the subsidy plus the sum of all fees.
- ErrBadCoinbaseValue
-
- // ErrMissingCoinbaseHeight indicates the coinbase transaction for a
- // block does not start with the serialized block block height as
- // required for version 2 and higher blocks.
- ErrMissingCoinbaseHeight
-
- // ErrBadCoinbaseHeight indicates the serialized block height in the
- // coinbase transaction for version 2 and higher blocks does not match
- // the expected value.
- ErrBadCoinbaseHeight
-
- // ErrScriptMalformed indicates a transaction script is malformed in
- // some way. For example, it might be longer than the maximum allowed
- // length or fail to parse.
- ErrScriptMalformed
-
- // ErrScriptValidation indicates the result of executing transaction
- // script failed. The error covers any failure when executing scripts
- // such signature verification failures and execution past the end of
- // the stack.
- ErrScriptValidation
-
- // ErrUnexpectedWitness indicates that a block includes transactions
- // with witness data, but doesn't also have a witness commitment within
- // the coinbase transaction.
- ErrUnexpectedWitness
-
- // ErrInvalidWitnessCommitment indicates that a block's witness
- // commitment is not well formed.
- ErrInvalidWitnessCommitment
-
- // ErrWitnessCommitmentMismatch indicates that the witness commitment
- // included in the block's coinbase transaction doesn't match the
- // manually computed witness commitment.
- ErrWitnessCommitmentMismatch
-)
-
-// Map of ErrorCode values back to their constant names for pretty printing.
-var errorCodeStrings = map[ErrorCode]string{
- ErrDuplicateBlock: "ErrDuplicateBlock",
- ErrBlockTooBig: "ErrBlockTooBig",
- ErrBlockVersionTooOld: "ErrBlockVersionTooOld",
- ErrBlockWeightTooHigh: "ErrBlockWeightTooHigh",
- ErrInvalidTime: "ErrInvalidTime",
- ErrTimeTooOld: "ErrTimeTooOld",
- ErrTimeTooNew: "ErrTimeTooNew",
- ErrDifficultyTooLow: "ErrDifficultyTooLow",
- ErrUnexpectedDifficulty: "ErrUnexpectedDifficulty",
- ErrHighHash: "ErrHighHash",
- ErrBadMerkleRoot: "ErrBadMerkleRoot",
- ErrBadCheckpoint: "ErrBadCheckpoint",
- ErrForkTooOld: "ErrForkTooOld",
- ErrCheckpointTimeTooOld: "ErrCheckpointTimeTooOld",
- ErrNoTransactions: "ErrNoTransactions",
- ErrTooManyTransactions: "ErrTooManyTransactions",
- ErrNoTxInputs: "ErrNoTxInputs",
- ErrNoTxOutputs: "ErrNoTxOutputs",
- ErrTxTooBig: "ErrTxTooBig",
- ErrBadTxOutValue: "ErrBadTxOutValue",
- ErrDuplicateTxInputs: "ErrDuplicateTxInputs",
- ErrBadTxInput: "ErrBadTxInput",
- ErrMissingTxOut: "ErrMissingTxOut",
- ErrUnfinalizedTx: "ErrUnfinalizedTx",
- ErrDuplicateTx: "ErrDuplicateTx",
- ErrOverwriteTx: "ErrOverwriteTx",
- ErrImmatureSpend: "ErrImmatureSpend",
- ErrSpendTooHigh: "ErrSpendTooHigh",
- ErrBadFees: "ErrBadFees",
- ErrTooManySigOps: "ErrTooManySigOps",
- ErrFirstTxNotCoinbase: "ErrFirstTxNotCoinbase",
- ErrMultipleCoinbases: "ErrMultipleCoinbases",
- ErrBadCoinbaseScriptLen: "ErrBadCoinbaseScriptLen",
- ErrBadCoinbaseValue: "ErrBadCoinbaseValue",
- ErrMissingCoinbaseHeight: "ErrMissingCoinbaseHeight",
- ErrBadCoinbaseHeight: "ErrBadCoinbaseHeight",
- ErrScriptMalformed: "ErrScriptMalformed",
- ErrScriptValidation: "ErrScriptValidation",
- ErrUnexpectedWitness: "ErrUnexpectedWitness",
- ErrInvalidWitnessCommitment: "ErrInvalidWitnessCommitment",
- ErrWitnessCommitmentMismatch: "ErrWitnessCommitmentMismatch",
-}
-
-// String returns the ErrorCode as a human-readable name.
-func (e ErrorCode) String() string {
- if s := errorCodeStrings[e]; s != "" {
- return s
- }
- return fmt.Sprintf("Unknown ErrorCode (%d)", int(e))
-}
-
-// RuleError identifies a rule violation. It is used to indicate that
-// processing of a block or transaction failed due to one of the many validation
-// rules. The caller can use type assertions to determine if a failure was
-// specifically due to a rule violation and access the ErrorCode field to
-// ascertain the specific reason for the rule violation.
-type RuleError struct {
- ErrorCode ErrorCode // Describes the kind of error
- Description string // Human readable description of the issue
-}
-
-// Error satisfies the error interface and prints human-readable errors.
-func (e RuleError) Error() string {
- return e.Description
-}
-
-// ruleError creates an RuleError given a set of arguments.
-func ruleError(c ErrorCode, desc string) RuleError {
- return RuleError{ErrorCode: c, Description: desc}
-}
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