From 266f4e8d1b974d1d00ca595c1879aba0aa9f0d99 Mon Sep 17 00:00:00 2001
From: Michael Jumper <mike.jumper@guac-dev.org>
Date: Tue, 21 May 2013 23:38:35 -0700
Subject: [PATCH] Implement DECALGN (fill screen with E's)

---
 protocols/ssh/include/terminal_handlers.h |  1 +
 protocols/ssh/src/terminal_handlers.c     | 31 +++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/protocols/ssh/include/terminal_handlers.h b/protocols/ssh/include/terminal_handlers.h
index 0a5a1e87..ec796085 100644
--- a/protocols/ssh/include/terminal_handlers.h
+++ b/protocols/ssh/include/terminal_handlers.h
@@ -45,6 +45,7 @@ int guac_terminal_escape(guac_terminal* term, char c);
 int guac_terminal_charset(guac_terminal* term, char c);
 int guac_terminal_csi(guac_terminal* term, char c);
 int guac_terminal_osc(guac_terminal* term, char c);
+int guac_terminal_ctrl_func(guac_terminal* term, char c);
 
 #endif
 
diff --git a/protocols/ssh/src/terminal_handlers.c b/protocols/ssh/src/terminal_handlers.c
index d626b696..686fc975 100644
--- a/protocols/ssh/src/terminal_handlers.c
+++ b/protocols/ssh/src/terminal_handlers.c
@@ -184,6 +184,10 @@ int guac_terminal_escape(guac_terminal* term, char c) {
             term->char_handler = guac_terminal_csi; 
             break;
 
+        case '#':
+            term->char_handler = guac_terminal_ctrl_func; 
+            break;
+
         /* Save Cursor (DECSC) */
         case '7':
             term->saved_cursor_row = term->cursor_row;
@@ -672,3 +676,30 @@ int guac_terminal_osc(guac_terminal* term, char c) {
     return 0;
 }
 
+int guac_terminal_ctrl_func(guac_terminal* term, char c) {
+
+    int row;
+
+    /* Build character with current attributes */
+    guac_terminal_char guac_char;
+    guac_char.value = 'E';
+    guac_char.attributes = term->current_attributes;
+
+    switch (c) {
+
+        /* Alignment test (fill screen with E's) */
+        case '8':
+
+            for (row=0; row<term->term_height; row++)
+                guac_terminal_set_columns(term, row, 0, term->term_width-1, &guac_char);
+
+            break;
+
+    }
+
+    term->char_handler = guac_terminal_echo; 
+
+    return 0;
+
+}
+