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@ -1098,7 +1098,6 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, unsigne
@@ -1098,7 +1098,6 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, unsigne
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return false; |
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if (stack.empty()) |
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return set_error(serror, SCRIPT_ERR_EVAL_FALSE); |
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if (CastToBool(stack.back()) == false) |
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return set_error(serror, SCRIPT_ERR_EVAL_FALSE); |
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@ -1109,24 +1108,37 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, unsigne
@@ -1109,24 +1108,37 @@ bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, unsigne
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if (!scriptSig.IsPushOnly()) |
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return set_error(serror, SCRIPT_ERR_SIG_PUSHONLY); |
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// stackCopy cannot be empty here, because if it was the
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// Restore stack.
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swap(stack, stackCopy); |
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// stack cannot be empty here, because if it was the
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// P2SH HASH <> EQUAL scriptPubKey would be evaluated with
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// an empty stack and the EvalScript above would return false.
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assert(!stackCopy.empty()); |
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assert(!stack.empty()); |
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const valtype& pubKeySerialized = stackCopy.back(); |
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const valtype& pubKeySerialized = stack.back(); |
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CScript pubKey2(pubKeySerialized.begin(), pubKeySerialized.end()); |
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popstack(stackCopy); |
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popstack(stack); |
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if (!EvalScript(stackCopy, pubKey2, flags, checker, serror)) |
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if (!EvalScript(stack, pubKey2, flags, checker, serror)) |
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// serror is set
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return false; |
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if (stackCopy.empty()) |
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if (stack.empty()) |
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return set_error(serror, SCRIPT_ERR_EVAL_FALSE); |
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if (!CastToBool(stackCopy.back())) |
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if (!CastToBool(stack.back())) |
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return set_error(serror, SCRIPT_ERR_EVAL_FALSE); |
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else |
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return set_success(serror); |
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} |
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// The CLEANSTACK check is only performed after potential P2SH evaluation,
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// as the non-P2SH evaluation of a P2SH script will obviously not result in
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// a clean stack (the P2SH inputs remain).
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if ((flags & SCRIPT_VERIFY_CLEANSTACK) != 0) { |
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// Disallow CLEANSTACK without P2SH, as otherwise a switch CLEANSTACK->P2SH+CLEANSTACK
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// would be possible, which is not a softfork (and P2SH should be one).
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assert((flags & SCRIPT_VERIFY_P2SH) != 0); |
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if (stack.size() != 1) { |
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return set_error(serror, SCRIPT_ERR_CLEANSTACK); |
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} |
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} |
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return set_success(serror); |
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