Inject block data in AZ.

alethzero/Main.ui

@@ -176,6 +176,7 @@
     <addaction name="clearPending"/>
     <addaction name="killBlockchain"/>
     <addaction name="inject"/>
+    <addaction name="injectBlock"/>
     <addaction name="forceMining"/>
     <addaction name="separator"/>
     <addaction name="usePrivate"/>
@@ -1685,6 +1686,11 @@ font-size: 14pt</string>
     <string>Retry Unknown Parent Blocks</string>
    </property>
   </action>
+  <action name="injectBlock">
+   <property name="text">
+    <string>In&amp;ject Block</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

alethzero/MainWin.cpp

@@ -1448,6 +1448,25 @@ void Main::on_inject_triggered()
 	}
 }
 
+void Main::on_injectBlock_triggered()
+{
+	QString s = QInputDialog::getText(this, "Inject Block", "Enter block dump in hex");
+	try
+	{
+		bytes b = fromHex(s.toStdString(), WhenError::Throw);
+		ethereum()->injectBlock(b);
+	}
+	catch (BadHexCharacter& _e)
+	{
+		cwarn << "invalid hex character, transaction rejected";
+		cwarn << boost::diagnostic_information(_e);
+	}
+	catch (...)
+	{
+		cwarn << "block rejected";
+	}
+}
+
 void Main::on_blocks_currentItemChanged()
 {
 	ui->info->clear();

alethzero/MainWin.h

@@ -159,6 +159,7 @@ private slots:
 	void on_killBlockchain_triggered();
 	void on_clearPending_triggered();
 	void on_inject_triggered();
+	void on_injectBlock_triggered();
 	void on_forceMining_triggered();
 	void on_usePrivate_triggered();
 	void on_turboMining_triggered();