qt: prevent re-execution of sensitive commands from console history

Author: waketraindev

src/qt/rpcconsole.cpp

@@ -83,6 +83,14 @@ const QStringList historyFilter = QStringList()
 
 }
 
+// List of commands that may cause unintended effects if accidentally re-executed from history
+const QStringList sensitiveFilter = QStringList()
+    << "send"
+    << "sendall"
+    << "sendmany"
+    << "sendtoaddress"
+;
+
 /* Object for executing console RPC commands in a separate thread.
 */
 class RPCExecutor : public QObject
@@ -361,6 +369,23 @@ bool RPCConsole::RPCParseCommandLine(interfaces::Node* node, std::string &strRes
         for (auto i = filter_ranges.rbegin(); i != filter_ranges.rend(); ++i) {
             pstrFilteredOut->replace(i->first, i->second - i->first, "(…)");
         }
+
+        bool is_sensitive = !filter_ranges.empty();
+
+        if (!is_sensitive) {
+            const QString strcmd = QString::fromStdString(*pstrFilteredOut);
+            for (const QString& val : sensitiveFilter) {
+                if (strcmd.contains(val, Qt::CaseInsensitive)) {
+                    is_sensitive = true;
+                    break;
+                }
+            }
+        }
+
+        // Prefix "!" to mark sensitive commands as non-executable when recalled from history
+        if (is_sensitive) {
+            pstrFilteredOut->insert(0, 1, '!');
+        }
     }
     switch(state) // final state
     {
@@ -405,7 +430,11 @@ void RPCExecutor::request(const QString &command, const QString& wallet_name)
                 "   example:    getblock(getblockhash(0) 1)[tx]\n\n"
 
                 "Results without keys can be queried with an integer in brackets using the parenthesized syntax.\n"
-                "   example:    getblock(getblockhash(0),1)[tx][0]\n\n")));
+                "   example:    getblock(getblockhash(0),1)[tx][0]\n\n"
+
+                "Commands starting with a leading '!' are blocked from execution.\n"
+                "These entries are shown for reference only. Remove the '!' or retype to run them.\n"
+                "   example:    !walletpassphrase(...)\n\n")));
             return;
         }
         if (!RPCConsole::RPCExecuteCommandLine(m_node, result, executableCommand, nullptr, wallet_name)) {
@@ -994,6 +1023,16 @@ void RPCConsole::on_lineEdit_returnPressed()
         return;
     }
 
+    // Prevent parsing and execution of commands prefixed with '!'
+    if (cmd.startsWith('!')) {
+        QMessageBox::information(this, tr("Command not executed"), tr(
+            "Commands prefixed with '!' are blocked.\n"
+            "Remove the '!' or retype to run again."
+
+        ));
+        return;
+    }
+
     std::string strFilteredCmd;
     try {
         std::string dummy;

src/qt/test/rpcnestedtests.cpp

@@ -86,23 +86,33 @@ void RPCNestedTests::rpcNestedTests()
     QVERIFY(filtered == "getblock(getbestblockhash())[tx][0]");
 
     RPCConsole::RPCParseCommandLine(nullptr, result, "createwallet test true", false, &filtered);
-    QVERIFY(filtered == "createwallet(…)");
+    QVERIFY(filtered == "!createwallet(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "createwalletdescriptor abc", false, &filtered);
-    QVERIFY(filtered == "createwalletdescriptor(…)");
+    QVERIFY(filtered == "!createwalletdescriptor(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "migratewallet abc abc", false, &filtered);
-    QVERIFY(filtered == "migratewallet(…)");
+    QVERIFY(filtered == "!migratewallet(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "signmessagewithprivkey abc", false, &filtered);
-    QVERIFY(filtered == "signmessagewithprivkey(…)");
+    QVERIFY(filtered == "!signmessagewithprivkey(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "signmessagewithprivkey abc,def", false, &filtered);
-    QVERIFY(filtered == "signmessagewithprivkey(…)");
+    QVERIFY(filtered == "!signmessagewithprivkey(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "signrawtransactionwithkey(abc)", false, &filtered);
-    QVERIFY(filtered == "signrawtransactionwithkey(…)");
+    QVERIFY(filtered == "!signrawtransactionwithkey(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "walletpassphrase(help())", false, &filtered);
-    QVERIFY(filtered == "walletpassphrase(…)");
+    QVERIFY(filtered == "!walletpassphrase(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "walletpassphrasechange(help(walletpassphrasechange(abc)))", false, &filtered);
-    QVERIFY(filtered == "walletpassphrasechange(…)");
+    QVERIFY(filtered == "!walletpassphrasechange(…)");
     RPCConsole::RPCParseCommandLine(nullptr, result, "help(encryptwallet(abc, def))", false, &filtered);
-    QVERIFY(filtered == "help(encryptwallet(…))");
+    QVERIFY(filtered == "!help(encryptwallet(…))");
+
+    // Test filtering for sensitive commands
+    RPCConsole::RPCParseCommandLine(nullptr, result, "send abc abc", false, &filtered);
+    QVERIFY(filtered == "!send abc abc");
+    RPCConsole::RPCParseCommandLine(nullptr, result, "sendall abc abc", false, &filtered);
+    QVERIFY(filtered == "!sendall abc abc");
+    RPCConsole::RPCParseCommandLine(nullptr, result, "sendmany abc abc", false, &filtered);
+    QVERIFY(filtered == "!sendmany abc abc");
+    RPCConsole::RPCParseCommandLine(nullptr, result, "sendtoaddress abc abc", false, &filtered);
+    QVERIFY(filtered == "!sendtoaddress abc abc");
 
     RPCConsole::RPCExecuteCommandLine(m_node, result, "rpcNestedTest");
     QVERIFY(result == "[]");