From d307f712c4e5087a659917f4d4b776e2ec84d697 Mon Sep 17 00:00:00 2001
From: Jeffrey Sharkey <jsharkey@jsharkey.org>
Date: Wed, 27 Aug 2008 10:47:56 +0000
Subject: * moved all terminal logic into a Service backend.  connections are
 held in place by a TerminalBridge, which keeps the connection alive and
 renders the screen to a bitmap if provided.  a Console creates TerminalViews
 for each bridge while it is active, and handles panning back/forth between
 them.

* volume up/down controls will change console font size
* extended trilead library to support resizePTY() command
* left/right screen gestures will pan between various open consoles
* up/down screen gestures on right-half will look through scrollback buffer
* up/down screen gestures on left-half will trigger pageup/down keys

* broke ctrl+ keyboard mapping, will need to bring back over from older code
---
 lib/src/main/java/com/trilead/ssh2/Session.java    | 11 ++++++
 .../com/trilead/ssh2/channel/ChannelManager.java   | 30 ++++++++++++++++
 .../ssh2/packets/PacketSessionPtyResize.java       | 40 ++++++++++++++++++++++
 3 files changed, 81 insertions(+)
 create mode 100644 lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java

diff --git a/lib/src/main/java/com/trilead/ssh2/Session.java b/lib/src/main/java/com/trilead/ssh2/Session.java
index 4784537..c41d837 100644
--- a/lib/src/main/java/com/trilead/ssh2/Session.java
+++ b/lib/src/main/java/com/trilead/ssh2/Session.java
@@ -129,6 +129,17 @@ public class Session
 		cm.requestPTY(cn, term, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels,
 				terminal_modes);
 	}
+	
+	public void resizePTY(int width, int height) throws IOException {
+		synchronized (this)
+		{
+			/* The following is just a nicer error, we would catch it anyway later in the channel code */
+			if (flag_closed)
+				throw new IOException("This session is closed.");
+		}
+		
+		cm.resizePTY(cn, width, height);
+	}
 
 	/**
 	 * Request X11 forwarding for the current session.
diff --git a/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java b/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
index ebd7585..74906d3 100644
--- a/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
+++ b/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
@@ -17,6 +17,7 @@ import com.trilead.ssh2.packets.PacketOpenDirectTCPIPChannel;
 import com.trilead.ssh2.packets.PacketOpenSessionChannel;
 import com.trilead.ssh2.packets.PacketSessionExecCommand;
 import com.trilead.ssh2.packets.PacketSessionPtyRequest;
+import com.trilead.ssh2.packets.PacketSessionPtyResize;
 import com.trilead.ssh2.packets.PacketSessionStartShell;
 import com.trilead.ssh2.packets.PacketSessionSubsystemRequest;
 import com.trilead.ssh2.packets.PacketSessionX11Request;
@@ -675,6 +676,35 @@ public class ChannelManager implements MessageHandler
 			throw (IOException) new IOException("PTY request failed").initCause(e);
 		}
 	}
+	
+	
+	public void resizePTY(Channel c, int width, int height) throws IOException {
+		PacketSessionPtyResize spr;
+
+		synchronized (c) {
+			if (c.state != Channel.STATE_OPEN)
+				throw new IOException("Cannot request PTY on this channel ("
+						+ c.getReasonClosed() + ")");
+
+			spr = new PacketSessionPtyResize(c.remoteID, true, width, height);
+			c.successCounter = c.failedCounter = 0;
+		}
+
+		synchronized (c.channelSendLock) {
+			if (c.closeMessageSent)
+				throw new IOException("Cannot request PTY on this channel ("
+						+ c.getReasonClosed() + ")");
+			tm.sendMessage(spr.getPayload());
+		}
+
+		try {
+			waitForChannelSuccessOrFailure(c);
+		} catch (IOException e) {
+			throw (IOException) new IOException("PTY request failed")
+					.initCause(e);
+		}
+	}
+	
 
 	public void requestX11(Channel c, boolean singleConnection, String x11AuthenticationProtocol,
 			String x11AuthenticationCookie, int x11ScreenNumber) throws IOException
diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
new file mode 100644
index 0000000..20d35cd
--- /dev/null
+++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
@@ -0,0 +1,40 @@
+package com.trilead.ssh2.packets;
+
+public class PacketSessionPtyResize {
+	byte[] payload;
+
+	public int recipientChannelID;
+	public boolean wantReply;
+	public String term;
+	public int width;
+	public int height;
+
+	public PacketSessionPtyResize(int recipientChannelID, boolean wantReply, int width, int height) {
+		this.recipientChannelID = recipientChannelID;
+		this.wantReply = wantReply;
+		this.term = term;
+		this.width = width;
+		this.height = height;
+	}
+
+	public byte[] getPayload()
+	{
+		if (payload == null)
+		{
+			TypesWriter tw = new TypesWriter();
+			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
+			tw.writeUINT32(recipientChannelID);
+			tw.writeString("window-change");
+			tw.writeBoolean(wantReply);
+			tw.writeUINT32(width);
+			tw.writeUINT32(height);
+			tw.writeUINT32(0);
+			tw.writeUINT32(0);
+
+			payload = tw.getBytes();
+		}
+		return payload;
+	}
+}
+
+
-- 
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