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Script: fix bug, OP_0/OP_FALSE is not invalid.

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This commit is contained in:
Mike Hearn 2013-04-26 13:50:30 +02:00
parent 172f264ee2
commit d537c8017a
1 changed files with 6 additions and 3 deletions
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9
core/src/main/java/com/google/bitcoin/script/Script.java
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@ -591,7 +591,10 @@ public class Script {
continue; continue;
switch(opcode) { switch(opcode) {
//case OP_0: dont know why this isnt also here in the reference client case OP_0:
// This is also OP_FALSE (they are both zero).
stack.add(new byte[]{0});
break;
case OP_1NEGATE: case OP_1NEGATE:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ONE.negate(), false))); stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ONE.negate(), false)));
break; break;
@ -1014,7 +1017,7 @@ public class Script {
break; break;
default: default:
throw new ScriptException("Script used a reserved Op Code"); throw new ScriptException("Script used a reserved opcode " + opcode);
} }
} }
@ -1163,7 +1166,7 @@ public class Script {
throw new ScriptException("Stack empty at end of script execution."); throw new ScriptException("Stack empty at end of script execution.");
if (!castToBool(stack.pollLast())) if (!castToBool(stack.pollLast()))
throw new ScriptException("Script resulted in a non-true stack"); throw new ScriptException("Script resulted in a non-true stack: " + stack);
// P2SH is pay to script hash. It means that the scriptPubKey has a special form which is a valid // P2SH is pay to script hash. It means that the scriptPubKey has a special form which is a valid
// program but it has "useless" form that if evaluated as a normal program always returns true. // program but it has "useless" form that if evaluated as a normal program always returns true.