Added a window_grows callback

2 files changed, 24 insertions, 0 deletions

diff --git a/include/libssh/callbacks.h b/include/libssh/callbacks.h
index 1bc0f5e..e45121a 100644
--- a/include/libssh/callbacks.h
+++ b/include/libssh/callbacks.h
@@ -339,6 +339,18 @@ typedef void (*ssh_channel_exit_signal_callback) (ssh_session session,
                                             const char *lang,
                                             void *userdata);
 
+/**
+ * @brief SSH channel window grows callback. Called when the remote window grows
+ * @param session Current session handler
+ * @param channel the actual channel
+ * @param len the size of the remote window
+ * @param userdata Userdata to be passed to the callback function.
+ */
+typedef int (*ssh_channel_window_grows_callback) (ssh_session session,
+                                           ssh_channel channel,
+                                           uint32_t remote_window,
+                                           void *userdata);
+
 struct ssh_channel_callbacks_struct {
   /** DON'T SET THIS use ssh_callbacks_init() instead. */
   size_t size;
@@ -370,6 +382,10 @@ struct ssh_channel_callbacks_struct {
    * This functions will be called when an exit signal has been received
    */
   ssh_channel_exit_signal_callback channel_exit_signal_function;
+  /**
+   * This functions will be called when the remote window grows.
+   */
+  ssh_channel_window_grows_callback channel_window_grows_function;
 };
 typedef struct ssh_channel_callbacks_struct *ssh_channel_callbacks;
 
diff --git a/src/channels.c b/src/channels.c
index be12d0b..c9d9753 100644
--- a/src/channels.c
+++ b/src/channels.c
@@ -479,6 +479,14 @@ SSH_PACKET_CALLBACK(channel_rcv_change_window) {
 
   channel->remote_window += bytes;
 
+  /* call callback here */
+  if(ssh_callbacks_exists(channel->callbacks, channel_window_grows_function)) {
+      channel->callbacks->channel_window_grows_function(channel->session,
+                                                channel,
+                                                channel->remote_window,
+                                                channel->callbacks->userdata);
+  }
+
   leave_function();
   return SSH_PACKET_USED;
 }