- reyk@cvs.openbsd.org 2005/12/30 15:56:37

     [channels.c channels.h clientloop.c]
     add channel output filter interface.
     ok djm@, suggested by markus@

1 files changed, 8 insertions, 4 deletions

diff --git a/channels.h b/channels.h
index 7990fe147..a97dd9007 100644
--- a/channels.h
+++ b/channels.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: channels.h,v 1.82 2005/12/12 13:46:18 markus Exp $    */
+/*      $OpenBSD: channels.h,v 1.83 2005/12/30 15:56:37 reyk Exp $      */
 
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -63,7 +63,8 @@ struct Channel;
 typedef struct Channel Channel;
 
 typedef void channel_callback_fn(int, void *);
-typedef int channel_filter_fn(struct Channel *, char *, int);
+typedef int channel_infilter_fn(struct Channel *, char *, int);
+typedef u_char *channel_outfilter_fn(struct Channel *, u_char **, u_int *);
 
 struct Channel {
         int     type;           /* channel type/state */
@@ -111,7 +112,8 @@ struct Channel {
         int                     detach_close;
 
         /* filter */
-        channel_filter_fn       *input_filter;
+        channel_infilter_fn     *input_filter;
+        channel_outfilter_fn    *output_filter;
 
         int     datagram;       /* keep boundaries */
 };
@@ -145,6 +147,8 @@ struct Channel {
 #define CHAN_EOF_SENT                   0x04
 #define CHAN_EOF_RCVD                   0x08
 
+#define CHAN_RBUF       16*1024
+
 /* check whether 'efd' is still in use */
 #define CHANNEL_EFD_INPUT_ACTIVE(c) \
         (compat20 && c->extended_usage == CHAN_EXTENDED_READ && \
@@ -169,7 +173,7 @@ void	 channel_send_open(int);
 void     channel_request_start(int, char *, int);
 void     channel_register_cleanup(int, channel_callback_fn *, int);
 void     channel_register_confirm(int, channel_callback_fn *, void *);
-void     channel_register_filter(int, channel_filter_fn *);
+void     channel_register_filter(int, channel_infilter_fn *, channel_outfilter_fn *);
 void     channel_cancel_cleanup(int);
 int      channel_close_fd(int *);
 void     channel_send_window_changes(void);