Initial screen resize support.

protocols/ssh/include/ssh_handlers.h

@@ -45,6 +45,7 @@ int ssh_guac_client_handle_messages(guac_client* client);
 int ssh_guac_client_key_handler(guac_client* client, int keysym, int pressed);
 int ssh_guac_client_mouse_handler(guac_client* client, int x, int y, int mask);
 int ssh_guac_client_clipboard_handler(guac_client* client, char* data);
+int ssh_guac_client_size_handler(guac_client* client, int width, int height);
 int ssh_guac_client_free_handler(guac_client* client);
 
 #endif

protocols/ssh/src/ssh_client.c

@@ -228,6 +228,7 @@ int ssh_guac_client_auth(guac_client* client, const char* password) {
     client->mouse_handler = ssh_guac_client_mouse_handler;
     client->key_handler = ssh_guac_client_key_handler;
     client->clipboard_handler = ssh_guac_client_clipboard_handler;
+    client->size_handler = ssh_guac_client_size_handler;
 
 
     /* Success */

protocols/ssh/src/ssh_handlers.c

@@ -296,6 +296,36 @@ int ssh_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
 
 }
 
+int ssh_guac_client_size_handler(guac_client* client, int width, int height) {
+
+    /* Get terminal */
+    ssh_guac_client_data* guac_client_data = (ssh_guac_client_data*) client->data;
+    guac_terminal* terminal = guac_client_data->term;
+
+    /* Calculate dimensions */
+    int rows    = height / terminal->display->char_height;
+    int columns = width  / terminal->display->char_width;
+
+    pthread_mutex_lock(&(terminal->lock));
+
+    /* If size has changed */
+    if (columns != terminal->term_width || rows != terminal->term_height) {
+
+        /* Resize terminal */
+        guac_terminal_resize(terminal, columns, rows);
+        channel_change_pty_size(guac_client_data->term_channel,
+                terminal->term_width, terminal->term_height);
+
+        /* Reset scroll region */
+        terminal->scroll_end = rows - 1;
+
+    }
+
+    pthread_mutex_unlock(&(terminal->lock));
+
+    return 0;
+}
+
 int ssh_guac_client_free_handler(guac_client* client) {
 
     ssh_guac_client_data* guac_client_data = (ssh_guac_client_data*) client->data;

protocols/ssh/src/terminal.c

@@ -417,3 +417,15 @@ void guac_terminal_set_columns(guac_terminal* terminal, int row,
 
 }
 
+void guac_terminal_resize(guac_terminal* term, int width, int height) {
+
+    /* Resize display */
+    guac_terminal_display_flush(term->display);
+    guac_terminal_display_resize(term->display, width, height);
+
+    /* Commit new dimensions */
+    term->term_width = width;
+    term->term_height = height;
+
+}
+