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improve detection of nested scripts

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This commit is contained in:
Craig Raw 2023-11-08 09:26:12 +02:00
parent 75730f00ac
commit c63b492326
1 changed files with 12 additions and 9 deletions
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13
src/main/java/com/sparrowwallet/drongo/protocol/ScriptChunk.java
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@ -145,7 +145,8 @@ public class ScriptChunk {
} }
public boolean isScript() { public boolean isScript() {
if(data == null || data.length == 0) { //Do not attempt to parse long data byte arrays into scripts
if(data == null || data.length == 0 || data.length > 1000) {
return false; return false;
} }
@ -153,17 +154,19 @@ public class ScriptChunk {
return false; return false;
} }
Script script = new Script(data, false);
try { try {
Script script = new Script(data); script.parse();
} catch (ProtocolException e) {
return false;
}
//Flaky: Test if contains a non-zero opcode, otherwise not a script //Flaky: Test if contains a non-zero opcode, otherwise not a script
for(ScriptChunk chunk : script.getChunks()) { for(ScriptChunk chunk : script.getChunks()) {
if(chunk.getOpcode() != OP_0) { if(chunk.getOpcode() != OP_0) {
return true; return true;
} }
} }
} catch(ProtocolException e) {
return false;
}
return false; return false;
} }