From 9044908636f0072d001d9a029053a384127b002b Mon Sep 17 00:00:00 2001
From: Jonas Schnelli <jonas.schnelli@include7.ch>
Date: Fri, 13 Mar 2015 21:51:27 +0100
Subject: [PATCH] Qt/RPCConsole: Don't store commands with potentially
 sensitive information in the history

Filters importprivkey, signrawtransaction, walletpassphrase, walletpassphrasechange, and encryptwallet
---
 src/qt/rpcconsole.cpp | 37 ++++++++++++++++++++++++++++---------
 src/qt/rpcconsole.h   |  1 +
 2 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/src/qt/rpcconsole.cpp b/src/qt/rpcconsole.cpp
index 5610e8b6ca..562c9509da 100644
--- a/src/qt/rpcconsole.cpp
+++ b/src/qt/rpcconsole.cpp
@@ -63,6 +63,14 @@ const struct {
     {NULL, NULL}
 };
 
+// don't add private key handling cmd's to the history
+const QStringList RPCConsole::historyFilter = QStringList()
+    << "importprivkey"
+    << "signrawtransaction"
+    << "walletpassphrase"
+    << "walletpassphrasechange"
+    << "encryptwallet";
+
 /* Object for executing console RPC commands in a separate thread.
 */
 class RPCExecutor : public QObject
@@ -755,15 +763,26 @@ void RPCConsole::on_lineEdit_returnPressed()
 
         message(CMD_REQUEST, cmd);
         Q_EMIT cmdRequest(cmd);
-        // Remove command, if already in history
-        history.removeOne(cmd);
-        // Append command to history
-        history.append(cmd);
-        // Enforce maximum history size
-        while(history.size() > CONSOLE_HISTORY)
-            history.removeFirst();
-        // Set pointer to end of history
-        historyPtr = history.size();
+
+        bool storeHistory = true;
+        Q_FOREACH(QString unallowedCmd, historyFilter)
+        {
+            if (cmd.trimmed().startsWith(unallowedCmd))
+                storeHistory = false; break;
+        }
+
+        if (storeHistory)
+        {
+            // Remove command, if already in history
+            history.removeOne(cmd);
+            // Append command to history
+            history.append(cmd);
+            // Enforce maximum history size
+            while(history.size() > CONSOLE_HISTORY)
+                history.removeFirst();
+            // Set pointer to end of history
+            historyPtr = history.size();
+        }
         // Scroll console view to end
         scrollToEnd();
     }
diff --git a/src/qt/rpcconsole.h b/src/qt/rpcconsole.h
index e1698711da..4841ea825e 100644
--- a/src/qt/rpcconsole.h
+++ b/src/qt/rpcconsole.h
@@ -140,6 +140,7 @@ private:
     ClientModel *clientModel;
     QStringList history;
     int historyPtr;
+    const static QStringList historyFilter;
     QString cmdBeforeBrowsing;
     QList<NodeId> cachedNodeids;
     const PlatformStyle *platformStyle;