forked from btcsuite/btcd
-
Notifications
You must be signed in to change notification settings - Fork 1
/
error.go
251 lines (205 loc) · 8.89 KB
/
error.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
// Copyright (c) 2014 Conformal Systems LLC.
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package blockchain
import (
"fmt"
)
// 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
// 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
// ErrMissingTx indicates a transaction referenced by an input is
// missing.
ErrMissingTx
// 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
// ErrDoubleSpend indicates a transaction is attempting to spend coins
// that have already been spent.
ErrDoubleSpend
// 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
)
// Map of ErrorCode values back to their constant names for pretty printing.
var errorCodeStrings = map[ErrorCode]string{
ErrDuplicateBlock: "ErrDuplicateBlock",
ErrBlockTooBig: "ErrBlockTooBig",
ErrBlockVersionTooOld: "ErrBlockVersionTooOld",
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",
ErrMissingTx: "ErrMissingTx",
ErrUnfinalizedTx: "ErrUnfinalizedTx",
ErrDuplicateTx: "ErrDuplicateTx",
ErrOverwriteTx: "ErrOverwriteTx",
ErrImmatureSpend: "ErrImmatureSpend",
ErrDoubleSpend: "ErrDoubleSpend",
ErrSpendTooHigh: "ErrSpendTooHigh",
ErrBadFees: "ErrBadFees",
ErrTooManySigOps: "ErrTooManySigOps",
ErrFirstTxNotCoinbase: "ErrFirstTxNotCoinbase",
ErrMultipleCoinbases: "ErrMultipleCoinbases",
ErrBadCoinbaseScriptLen: "ErrBadCoinbaseScriptLen",
ErrBadCoinbaseValue: "ErrBadCoinbaseValue",
ErrMissingCoinbaseHeight: "ErrMissingCoinbaseHeight",
ErrBadCoinbaseHeight: "ErrBadCoinbaseHeight",
ErrScriptMalformed: "ErrScriptMalformed",
ErrScriptValidation: "ErrScriptValidation",
}
// 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}
}