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[lbry] txscript: recognize LBRY claim script OPCODES

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This commit is contained in:
Roy Lee 2018-06-14 19:12:43 -07:00
parent 57b3f96f3f
commit e0b451a76a
1 changed files with 17 additions and 12 deletions
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29
txscript/opcode.go
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@ -219,9 +219,9 @@ const (
OP_CHECKSEQUENCEVERIFY = 0xb2 // 178 - AKA OP_NOP3
OP_NOP4 = 0xb3 // 179
OP_NOP5 = 0xb4 // 180
OP_NOP6 = 0xb5 // 181
OP_NOP7 = 0xb6 // 182
OP_NOP8 = 0xb7 // 183
OP_CLAIMNAME = 0xb5 // 181 - AKA OP_NOP6
OP_SUPPORTCLAIM = 0xb6 // 182 - AKA OP_NOP7
OP_UPDATECLAIM = 0xb7 // 183 - AKA OP_NOP8
OP_NOP9 = 0xb8 // 184
OP_NOP10 = 0xb9 // 185
OP_UNKNOWN186 = 0xba // 186
@ -500,14 +500,14 @@ var opcodeArray = [256]opcode{
OP_CHECKMULTISIGVERIFY: {OP_CHECKMULTISIGVERIFY, "OP_CHECKMULTISIGVERIFY", 1, opcodeCheckMultiSigVerify},
// Reserved opcodes.
OP_NOP1: {OP_NOP1, "OP_NOP1", 1, opcodeNop},
OP_NOP4: {OP_NOP4, "OP_NOP4", 1, opcodeNop},
OP_NOP5: {OP_NOP5, "OP_NOP5", 1, opcodeNop},
OP_NOP6: {OP_NOP6, "OP_NOP6", 1, opcodeNop},
OP_NOP7: {OP_NOP7, "OP_NOP7", 1, opcodeNop},
OP_NOP8: {OP_NOP8, "OP_NOP8", 1, opcodeNop},
OP_NOP9: {OP_NOP9, "OP_NOP9", 1, opcodeNop},
OP_NOP10: {OP_NOP10, "OP_NOP10", 1, opcodeNop},
OP_NOP1: {OP_NOP1, "OP_NOP1", 1, opcodeNop},
OP_NOP4: {OP_NOP4, "OP_NOP4", 1, opcodeNop},
OP_NOP5: {OP_NOP5, "OP_NOP5", 1, opcodeNop},
OP_CLAIMNAME: {OP_CLAIMNAME, "OP_CLAIMNAME", 1, opcodeClaimScript},
OP_SUPPORTCLAIM: {OP_SUPPORTCLAIM, "OP_SUPPORTCLAIM", 1, opcodeClaimScript},
OP_UPDATECLAIM: {OP_UPDATECLAIM, "OP_UPDATECLAIM", 1, opcodeClaimScript},
OP_NOP9: {OP_NOP9, "OP_NOP9", 1, opcodeNop},
OP_NOP10: {OP_NOP10, "OP_NOP10", 1, opcodeNop},
// Undefined opcodes.
OP_UNKNOWN186: {OP_UNKNOWN186, "OP_UNKNOWN186", 1, opcodeInvalid},
@ -981,7 +981,7 @@ func opcodeN(op *parsedOpcode, vm *Engine) error {
func opcodeNop(op *parsedOpcode, vm *Engine) error {
switch op.opcode.value {
case OP_NOP1, OP_NOP4, OP_NOP5,
OP_NOP6, OP_NOP7, OP_NOP8, OP_NOP9, OP_NOP10:
OP_NOP9, OP_NOP10:
if vm.hasFlag(ScriptDiscourageUpgradableNops) {
str := fmt.Sprintf("OP_NOP%d reserved for soft-fork "+
"upgrades", op.opcode.value-(OP_NOP1-1))
@ -991,6 +991,11 @@ func opcodeNop(op *parsedOpcode, vm *Engine) error {
return nil
}
func opcodeClaimScript(op *parsedOpcode, vm *Engine) error {
vm.dstack.PushByteArray([]byte{0})
return nil
}
// popIfBool enforces the "minimal if" policy during script execution if the
// particular flag is set. If so, in order to eliminate an additional source
// of nuisance malleability, post-segwit for version 0 witness programs, we now