From 4b3b83044a29e89d958c3bf0ea2660b978e3c027 Mon Sep 17 00:00:00 2001
From: jsorg71 <jsorg71>
Date: Sat, 30 Dec 2006 05:04:13 +0000
Subject: [PATCH] more work on channel support

---
 libxrdp/Makefile       |   2 +-
 libxrdp/libxrdp.c      | 102 +++++++++++++++++++++++++++++++++++++++++
 libxrdp/libxrdpinc.h   |   8 ++++
 libxrdp/makefile_win32 |   2 +-
 rdp/rdp.h              |  10 ++++
 vnc/vnc.h              |  11 +++++
 xrdp/xrdp.h            |   8 ++++
 xrdp/xrdp_interface.c  |  33 +++++++++++++
 xrdp/xrdp_login_wnd.c  |   3 ++
 xrdp/xrdp_types.h      |  11 +++++
 xup/xup.h              |  11 +++++
 11 files changed, 199 insertions(+), 2 deletions(-)

diff --git a/libxrdp/Makefile b/libxrdp/Makefile
index 4ee8b83a..65d3cf71 100644
--- a/libxrdp/Makefile
+++ b/libxrdp/Makefile
@@ -1,7 +1,7 @@
 # libxrdp makefile
 LIBXRDPOBJ = libxrdp.o xrdp_tcp.o xrdp_iso.o xrdp_mcs.o \
              xrdp_sec.o xrdp_rdp.o xrdp_orders.o \
-             xrdp_bitmap_compress.o \
+             xrdp_bitmap_compress.o xrdp_channel.o \
              os_calls.o ssl_calls.o file.o
 
 DESTDIR = /usr/local/xrdp
diff --git a/libxrdp/libxrdp.c b/libxrdp/libxrdp.c
index 79c93278..d3c600a4 100644
--- a/libxrdp/libxrdp.c
+++ b/libxrdp/libxrdp.c
@@ -600,3 +600,105 @@ libxrdp_orders_send_bitmap2(struct xrdp_session* session,
                                   width, height, bpp, data,
                                   cache_id, cache_idx);
 }
+
+/*****************************************************************************/
+/* returns error */
+/* this function gets the channel name and its flags, index is zero
+   based.  either channel_name or channel_flags can be passed in nil if
+   they are not needed */
+int EXPORT_CC
+libxrdp_query_channel(struct xrdp_session* session, int index,
+                      char* channel_name, int* channel_flags)
+{
+  int count;
+  struct xrdp_rdp* rdp;
+  struct xrdp_mcs* mcs;
+  struct mcs_channel_item* channel_item;
+
+  rdp = (struct xrdp_rdp*)session->rdp;
+  mcs = rdp->sec_layer->mcs_layer;
+  count = mcs->channel_list->count;
+  if (index < 0 || index >= count)
+  {
+    return 1;
+  }
+  channel_item = (struct mcs_channel_item*)
+            list_get_item(mcs->channel_list, index);
+  if (channel_item == 0)
+  {
+    /* this should not happen */
+    return 1;
+  }
+  if (channel_name != 0)
+  {
+    g_strncpy(channel_name, channel_item->name, 8);
+  }
+  if (channel_flags != 0)
+  {
+    *channel_flags = channel_item->flags;
+  }
+  return 0;
+}
+
+/*****************************************************************************/
+/* returns a zero based index of the channel, -1 if error or it dosen't
+   exist */
+int EXPORT_CC
+libxrdp_get_channel_id(struct xrdp_session* session, char* name)
+{
+  int index;
+  int count;
+  struct xrdp_rdp* rdp;
+  struct xrdp_mcs* mcs;
+  struct mcs_channel_item* channel_item;
+
+  rdp = (struct xrdp_rdp*)session->rdp;
+  mcs = rdp->sec_layer->mcs_layer;
+  count = mcs->channel_list->count;
+  for (index = 0; index < count; index++)
+  {
+    channel_item = (struct mcs_channel_item*)
+              list_get_item(mcs->channel_list, index);
+    if (channel_item != 0)
+    {
+      if (g_strcasecmp(name, channel_item->name) == 0)
+      {
+        return index;
+      }
+    }
+  }
+  return -1;
+}
+
+/*****************************************************************************/
+int EXPORT_CC
+libxrdp_send_to_channel(struct xrdp_session* session, int channel_id,
+                        char* data, int data_len)
+{
+  struct xrdp_rdp* rdp;
+  struct xrdp_sec* sec;
+  struct xrdp_channel* chan;
+  struct stream* s;
+
+  rdp = (struct xrdp_rdp*)session->rdp;
+  sec = rdp->sec_layer;
+  chan = sec->chan_layer;
+  make_stream(s);
+  init_stream(s, data_len + 1024); /* this should be big enough */
+  if (xrdp_channel_init(chan, s) != 0)
+  {
+    free_stream(s);
+    return 1;
+  }
+  /* here we make a copy of the data, xrdp_channel_send is
+     going to alter it if its bigger that 8192 or something */
+  out_uint8a(s, data, data_len);
+  s_mark_end(s);
+  if (xrdp_channel_send(chan, s, channel_id) != 0)
+  {
+    free_stream(s);
+    return 1;
+  }
+  free_stream(s);
+  return 0;
+}
diff --git a/libxrdp/libxrdpinc.h b/libxrdp/libxrdpinc.h
index a7e8927d..33160d0e 100644
--- a/libxrdp/libxrdpinc.h
+++ b/libxrdp/libxrdpinc.h
@@ -197,5 +197,13 @@ int DEFAULT_CC
 libxrdp_orders_send_bitmap2(struct xrdp_session* session,
                             int width, int height, int bpp, char* data,
                             int cache_id, int cache_idx);
+int DEFAULT_CC
+libxrdp_query_channel(struct xrdp_session* session, int index,
+                      char* channel_name, int* channel_flags);
+int DEFAULT_CC
+libxrdp_get_channel_id(struct xrdp_session* session, char* name);
+int DEFAULT_CC
+libxrdp_send_to_channel(struct xrdp_session* session, int channel_id,
+                        char* data, int data_len);
 
 #endif
diff --git a/libxrdp/makefile_win32 b/libxrdp/makefile_win32
index 4ab297ef..93a44069 100755
--- a/libxrdp/makefile_win32
+++ b/libxrdp/makefile_win32
@@ -8,7 +8,7 @@
 
 XRDPOBJ = libxrdp.obj xrdp_tcp.obj xrdp_iso.obj xrdp_mcs.obj \
           xrdp_sec.obj xrdp_rdp.obj xrdp_orders.obj \
-          xrdp_bitmap_compress.obj \
+          xrdp_bitmap_compress.obj xrdp_channel.obj \
           list.obj \
           file.obj \
           os_calls.obj \
diff --git a/rdp/rdp.h b/rdp/rdp.h
index 4da72bdd..f61ec5f9 100644
--- a/rdp/rdp.h
+++ b/rdp/rdp.h
@@ -262,6 +262,8 @@ struct mod
   int (*mod_signal)(struct mod* v);
   int (*mod_end)(struct mod* v);
   int (*mod_set_param)(struct mod* v, char* name, char* value);
+  long mod_dumby[100 - 6]; /* align, 100 minus the number of mod 
+                              functions above */
   /* server functions */
   int (*server_begin_update)(struct mod* v);
   int (*server_end_update)(struct mod* v);
@@ -295,6 +297,14 @@ struct mod
                           int box_right, int box_bottom,
                           int x, int y, char* data, int data_len);
   int (*server_reset)(struct mod* v, int width, int height, int bpp);
+  int (*server_query_channel)(struct mod* v, int index,
+                              char* channel_name,
+                              int* channel_flags);
+  int (*server_get_channel_id)(struct mod* v, char* name);
+  int (*server_send_to_channel)(struct mod* v, int channel_id,
+                                char* data, int data_len);
+  long server_dumby[100 - 24]; /* align, 100 minus the number of server 
+                                  functions above */
   /* common */
   long handle; /* pointer to self as long */
   long wm;
diff --git a/vnc/vnc.h b/vnc/vnc.h
index 90dc14cf..c374c284 100644
--- a/vnc/vnc.h
+++ b/vnc/vnc.h
@@ -29,6 +29,7 @@
 struct vnc
 {
   int size; /* size of this struct */
+  int version; /* internal version */
   /* client functions */
   int (*mod_start)(struct vnc* v, int w, int h, int bpp);
   int (*mod_connect)(struct vnc* v);
@@ -37,6 +38,8 @@ struct vnc
   int (*mod_signal)(struct vnc* v);
   int (*mod_end)(struct vnc* v);
   int (*mod_set_param)(struct vnc* v, char* name, char* value);
+  long mod_dumby[100 - 6]; /* align, 100 minus the number of mod 
+                              functions above */
   /* server functions */
   int (*server_begin_update)(struct vnc* v);
   int (*server_end_update)(struct vnc* v);
@@ -70,6 +73,14 @@ struct vnc
                           int box_right, int box_bottom,
                           int x, int y, char* data, int data_len);
   int (*server_reset)(struct vnc* v, int width, int height, int bpp);
+  int (*server_query_channel)(struct vnc* v, int index,
+                              char* channel_name,
+                              int* channel_flags);
+  int (*server_get_channel_id)(struct vnc* v, char* name);
+  int (*server_send_to_channel)(struct vnc* v, int channel_id,
+                                char* data, int data_len);
+  long server_dumby[100 - 24]; /* align, 100 minus the number of server 
+                                  functions above */
   /* common */
   long handle; /* pointer to self as long */
   long wm;
diff --git a/xrdp/xrdp.h b/xrdp/xrdp.h
index 22501954..225a0f85 100644
--- a/xrdp/xrdp.h
+++ b/xrdp/xrdp.h
@@ -365,3 +365,11 @@ server_draw_text(struct xrdp_mod* mod, int font,
                  int x, int y, char* data, int data_len);
 int DEFAULT_CC
 server_reset(struct xrdp_mod* mod, int width, int height, int bpp);
+int DEFAULT_CC
+server_query_channel(struct xrdp_mod* mod, int index, char* channel_name,
+                     int* channel_flags);
+int DEFAULT_CC
+server_get_channel_id(struct xrdp_mod* mod, char* name);
+int DEFAULT_CC
+server_send_to_channel(struct xrdp_mod* mod, int channel_id,
+                       char* data, int data_len);
diff --git a/xrdp/xrdp_interface.c b/xrdp/xrdp_interface.c
index 1bf1a8f4..c4c54c69 100644
--- a/xrdp/xrdp_interface.c
+++ b/xrdp/xrdp_interface.c
@@ -411,3 +411,36 @@ server_reset(struct xrdp_mod* mod, int width, int height, int bpp)
   xrdp_wm_load_static_pointers(wm);
   return 0;
 }
+
+/*****************************************************************************/
+int DEFAULT_CC
+server_query_channel(struct xrdp_mod* mod, int index, char* channel_name,
+                     int* channel_flags)
+{
+  struct xrdp_wm* wm;
+
+  wm = (struct xrdp_wm*)mod->wm;
+  return libxrdp_query_channel(wm->session, index, channel_name,
+                               channel_flags);
+}
+
+/*****************************************************************************/
+int DEFAULT_CC
+server_get_channel_id(struct xrdp_mod* mod, char* name)
+{
+  struct xrdp_wm* wm;
+
+  wm = (struct xrdp_wm*)mod->wm;
+  return libxrdp_get_channel_id(wm->session, name);
+}
+
+/*****************************************************************************/
+int DEFAULT_CC
+server_send_to_channel(struct xrdp_mod* mod, int channel_id,
+                       char* data, int data_len)
+{
+  struct xrdp_wm* wm;
+
+  wm = (struct xrdp_wm*)mod->wm;
+  return libxrdp_send_to_channel(wm->session, channel_id, data, data_len);
+}
diff --git a/xrdp/xrdp_login_wnd.c b/xrdp/xrdp_login_wnd.c
index 9481d355..f2f3dce6 100644
--- a/xrdp/xrdp_login_wnd.c
+++ b/xrdp/xrdp_login_wnd.c
@@ -174,6 +174,9 @@ xrdp_wm_setup_mod1(struct xrdp_wm* self,
       self->mod->server_add_char = server_add_char;
       self->mod->server_draw_text = server_draw_text;
       self->mod->server_reset = server_reset;
+      self->mod->server_query_channel = server_query_channel;
+      self->mod->server_get_channel_id = server_get_channel_id;
+      self->mod->server_send_to_channel = server_send_to_channel;
     }
   }
   /* id self->mod is null, there must be a problem */
diff --git a/xrdp/xrdp_types.h b/xrdp/xrdp_types.h
index e296bc53..f65b0c06 100644
--- a/xrdp/xrdp_types.h
+++ b/xrdp/xrdp_types.h
@@ -24,6 +24,7 @@
 struct xrdp_mod
 {
   int size; /* size of this struct */
+  int version; /* internal version */
   /* client functions */
   int (*mod_start)(struct xrdp_mod* v, int w, int h, int bpp);
   int (*mod_connect)(struct xrdp_mod* v);
@@ -32,6 +33,8 @@ struct xrdp_mod
   int (*mod_signal)(struct xrdp_mod* v);
   int (*mod_end)(struct xrdp_mod* v);
   int (*mod_set_param)(struct xrdp_mod* v, char* name, char* value);
+  long mod_dumby[100 - 6]; /* align, 100 minus the number of mod 
+                              functions above */
   /* server functions */
   int (*server_begin_update)(struct xrdp_mod* v);
   int (*server_end_update)(struct xrdp_mod* v);
@@ -65,6 +68,14 @@ struct xrdp_mod
                           int box_right, int box_bottom,
                           int x, int y, char* data, int data_len);
   int (*server_reset)(struct xrdp_mod* v, int width, int height, int bpp);
+  int (*server_query_channel)(struct xrdp_mod* v, int index,
+                              char* channel_name,
+                              int* channel_flags);
+  int (*server_get_channel_id)(struct xrdp_mod* v, char* name);
+  int (*server_send_to_channel)(struct xrdp_mod* v, int channel_id,
+                                char* data, int data_len);
+  long server_dumby[100 - 24]; /* align, 100 minus the number of server 
+                                  functions above */
   /* common */
   long handle; /* pointer to self as int */
   long wm; /* struct xrdp_wm* */
diff --git a/xup/xup.h b/xup/xup.h
index 02a5bf6f..ca5653e8 100644
--- a/xup/xup.h
+++ b/xup/xup.h
@@ -29,6 +29,7 @@
 struct mod
 {
   int size; /* size of this struct */
+  int version; /* internal version */
   /* client functions */
   int (*mod_start)(struct mod* v, int w, int h, int bpp);
   int (*mod_connect)(struct mod* v);
@@ -37,6 +38,8 @@ struct mod
   int (*mod_signal)(struct mod* v);
   int (*mod_end)(struct mod* v);
   int (*mod_set_param)(struct mod* v, char* name, char* value);
+  long mod_dumby[100 - 6]; /* align, 100 minus the number of mod 
+                              functions above */
   /* server functions */
   int (*server_begin_update)(struct mod* v);
   int (*server_end_update)(struct mod* v);
@@ -70,6 +73,14 @@ struct mod
                           int box_right, int box_bottom,
                           int x, int y, char* data, int data_len);
   int (*server_reset)(struct mod* v, int width, int height, int bpp);
+  int (*server_query_channel)(struct mod* v, int index,
+                              char* channel_name,
+                              int* channel_flags);
+  int (*server_get_channel_id)(struct mod* v, char* name);
+  int (*server_send_to_channel)(struct mod* v, int channel_id,
+                                char* data, int data_len);
+  long server_dumby[100 - 24]; /* align, 100 minus the number of server 
+                                  functions above */
   /* common */
   long handle; /* pointer to self as long */
   long wm;