Comply with RFC 4254 on window-change packet

* Always send false for "want reply"
* We don't need to wait since a reply should not be sent.
* Allow the sending of (informational) pixel dimensions.

3 files changed, 33 insertions, 18 deletions

diff --git a/lib/src/main/java/com/trilead/ssh2/Session.java b/lib/src/main/java/com/trilead/ssh2/Session.java
index c41d837..30efa6f 100644
--- a/lib/src/main/java/com/trilead/ssh2/Session.java
+++ b/lib/src/main/java/com/trilead/ssh2/Session.java
@@ -130,7 +130,26 @@ public class Session
 				terminal_modes);

 	}

 	

-	public void resizePTY(int width, int height) throws IOException {

+	/**

+	 * Inform other side of connection that our PTY has resized.

+	 * <p>

+	 * Zero dimension parameters are ignored. The character/row dimensions

+     * override the pixel dimensions (when nonzero). Pixel dimensions refer to

+     * the drawable area of the window. The dimension parameters are only

+     * informational.

+     * 

+     * @param term_width_characters

+     *            terminal width, characters (e.g., 80)

+     * @param term_height_characters

+     *            terminal height, rows (e.g., 24)

+     * @param term_width_pixels

+     *            terminal width, pixels (e.g., 640)

+     * @param term_height_pixels

+     *            terminal height, pixels (e.g., 480)

+	 * @throws IOException

+	 */

+	public void resizePTY(int term_width_characters, int term_height_characters, int term_width_pixels,

+			int term_height_pixels) throws IOException {

 		synchronized (this)

 		{

 			/* The following is just a nicer error, we would catch it anyway later in the channel code */

@@ -138,7 +157,7 @@ public class Session
 				throw new IOException("This session is closed.");

 		}

 		

-		cm.resizePTY(cn, width, height);

+		cm.resizePTY(cn, term_width_characters, term_height_characters, term_width_pixels, term_height_pixels);

 	}

 

 	/**

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 e582a52..fb4beae 100644
--- a/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
+++ b/lib/src/main/java/com/trilead/ssh2/channel/ChannelManager.java
@@ -678,7 +678,8 @@ public class ChannelManager implements MessageHandler
 	}

 	

 	

-	public void resizePTY(Channel c, int width, int height) throws IOException {

+	public void resizePTY(Channel c, int term_width_characters, int term_height_characters,

+			int term_width_pixels, int term_height_pixels) throws IOException {

 		PacketSessionPtyResize spr;

 

 		synchronized (c) {

@@ -686,7 +687,8 @@ public class ChannelManager implements MessageHandler
 				throw new IOException("Cannot request PTY on this channel ("

 						+ c.getReasonClosed() + ")");

 

-			spr = new PacketSessionPtyResize(c.remoteID, true, width, height);

+			spr = new PacketSessionPtyResize(c.remoteID, term_width_characters, term_height_characters,

+					term_width_pixels, term_height_pixels);

 			c.successCounter = c.failedCounter = 0;

 		}

 

@@ -696,14 +698,6 @@ public class ChannelManager implements MessageHandler
 						+ c.getReasonClosed() + ")");

 			tm.sendMessage(spr.getPayload());

 		}

-

-		try {

-			//waitForChannelSuccessOrFailure(c);

-			this.waitForChannelRequestResult(c);

-		} catch (IOException e) {

-			throw (IOException) new IOException("PTY request failed")

-					.initCause(e);

-		}

 	}

 	

 

diff --git a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
index 27b5f00..1e3b558 100644
--- a/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
+++ b/lib/src/main/java/com/trilead/ssh2/packets/PacketSessionPtyResize.java
@@ -4,15 +4,17 @@ public class PacketSessionPtyResize {
 	byte[] payload;
 
 	public int recipientChannelID;
-	public boolean wantReply;
 	public int width;
 	public int height;
+	public int pixelWidth;
+	public int pixelHeight;
 
-	public PacketSessionPtyResize(int recipientChannelID, boolean wantReply, int width, int height) {
+	public PacketSessionPtyResize(int recipientChannelID, int width, int height, int pixelWidth, int pixelHeight) {
 		this.recipientChannelID = recipientChannelID;
-		this.wantReply = wantReply;
 		this.width = width;
 		this.height = height;
+		this.pixelWidth = pixelWidth;
+		this.pixelHeight = pixelHeight;
 	}
 
 	public byte[] getPayload()
@@ -23,11 +25,11 @@ public class PacketSessionPtyResize {
 			tw.writeByte(Packets.SSH_MSG_CHANNEL_REQUEST);
 			tw.writeUINT32(recipientChannelID);
 			tw.writeString("window-change");
-			tw.writeBoolean(wantReply);
+			tw.writeBoolean(false);
 			tw.writeUINT32(width);
 			tw.writeUINT32(height);
-			tw.writeUINT32(0);
-			tw.writeUINT32(0);
+			tw.writeUINT32(pixelWidth);
+			tw.writeUINT32(pixelHeight);
 
 			payload = tw.getBytes();
 		}