[gtk-frdp] Implemented RDP channel support

[Felipe Borges <felipeborges src gnome org>]

commit 8fed58a28edd36923d677a2eb4412919a24f5532
Author: akallabeth <akallabeth posteo net>
Date:   Fri Jan 18 22:52:24 2019 +0100

    Implemented RDP channel support
    
    Fixes #14: Basic RDP channel support for modern graphics pipeline
    and video redirection support added.

 src/frdp-channels.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/frdp-channels.h |  39 +++++++++++++++++
 src/frdp-context.h  |  35 ++++++++++++++++
 src/frdp-session.c  |  75 +++++++++++++++++++++++++++++----
 src/meson.build     |   5 ++-
 5 files changed, 263 insertions(+), 10 deletions(-)
---
diff --git a/src/frdp-channels.c b/src/frdp-channels.c
new file mode 100644
index 0000000..74e8d69
--- /dev/null
+++ b/src/frdp-channels.c
@@ -0,0 +1,119 @@
+/* frdp-channels.c
+ *
+ * Copyright (C) 2019 Armin Novak <akallabeth posteo net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <freerdp/gdi/video.h>
+#include <freerdp/gdi/gfx.h>
+
+#include "frdp-channels.h"
+#include "frdp-context.h"
+
+void frdp_OnChannelConnectedEventHandler(void* context, ChannelConnectedEventArgs* e)
+{
+       frdpContext* ctx = (frdpContext*) context;
+
+       if (strcmp(e->name, RDPEI_DVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Touch input redirection
+       }
+  else if (strcmp(e->name, DISP_DVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Display resize channel
+       }
+       else if (strcmp(e->name, TSMF_DVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Old windows 7 multimedia redirection
+       }
+       else if (strcmp(e->name, RDPGFX_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_graphics_pipeline_init(ctx->context.gdi, (RdpgfxClientContext*) e->pInterface);
+       }
+       else if (strcmp(e->name, RAIL_SVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Remote application
+       }
+       else if (strcmp(e->name, CLIPRDR_SVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Clipboard redirection channel
+       }
+       else if (strcmp(e->name, ENCOMSP_SVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Multiparty channel
+       }
+       else if (strcmp(e->name, GEOMETRY_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_video_geometry_init(ctx->context.gdi, (GeometryClientContext*)e->pInterface);
+       }
+       else if (strcmp(e->name, VIDEO_CONTROL_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_video_control_init(ctx->context.gdi, (VideoClientContext*)e->pInterface);
+       }
+       else if (strcmp(e->name, VIDEO_DATA_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_video_data_init(ctx->context.gdi, (VideoClientContext*)e->pInterface);
+       }
+}
+
+void frdp_OnChannelDisconnectedEventHandler(void* context, ChannelDisconnectedEventArgs* e)
+{
+       frdpContext* ctx = (frdpContext*) context;
+
+       if (strcmp(e->name, RDPEI_DVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Touch input redirection
+       }
+       else if (strcmp(e->name, DISP_DVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Display resize channel
+       }
+       else if (strcmp(e->name, TSMF_DVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Old windows 7 multimedia redirection
+       }
+       else if (strcmp(e->name, RDPGFX_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_graphics_pipeline_uninit(ctx->context.gdi, (RdpgfxClientContext*) e->pInterface);
+       }
+       else if (strcmp(e->name, RAIL_SVC_CHANNEL_NAME) == 0)
+       {
+    // TODO Remote application
+       }
+       else if (strcmp(e->name, CLIPRDR_SVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Clipboard redirection channel
+       }
+       else if (strcmp(e->name, ENCOMSP_SVC_CHANNEL_NAME) == 0)
+       {
+               // TODO Multiparty channel
+       }
+       else if (strcmp(e->name, GEOMETRY_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_video_geometry_uninit(ctx->context.gdi, (GeometryClientContext*)e->pInterface);
+       }
+       else if (strcmp(e->name, VIDEO_CONTROL_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_video_control_uninit(ctx->context.gdi, (VideoClientContext*)e->pInterface);
+       }
+       else if (strcmp(e->name, VIDEO_DATA_DVC_CHANNEL_NAME) == 0)
+       {
+               gdi_video_data_uninit(ctx->context.gdi, (VideoClientContext*)e->pInterface);
+       }
+}
diff --git a/src/frdp-channels.h b/src/frdp-channels.h
new file mode 100644
index 0000000..bb3b950
--- /dev/null
+++ b/src/frdp-channels.h
@@ -0,0 +1,39 @@
+/* frdp-channels.h
+ *
+ * Copyright (C) 2019 Armin Novak <akallabeth posteo net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <freerdp/freerdp.h>
+#include <freerdp/client/channels.h>
+#include <freerdp/client/rdpei.h>
+#include <freerdp/client/tsmf.h>
+#include <freerdp/client/rail.h>
+#include <freerdp/client/cliprdr.h>
+#include <freerdp/client/rdpgfx.h>
+#include <freerdp/client/encomsp.h>
+#include <freerdp/client/disp.h>
+#include <freerdp/client/geometry.h>
+#include <freerdp/client/video.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+void frdp_OnChannelConnectedEventHandler(void* context, ChannelConnectedEventArgs* e);
+void frdp_OnChannelDisconnectedEventHandler(void* context, ChannelDisconnectedEventArgs* e);
+
+G_END_DECLS
diff --git a/src/frdp-context.h b/src/frdp-context.h
new file mode 100644
index 0000000..ec7c95e
--- /dev/null
+++ b/src/frdp-context.h
@@ -0,0 +1,35 @@
+/* frdp-context.h
+ *
+ * Copyright (C) 2019 Armin Novak <akallabeth posteo net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <freerdp/freerdp.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+typedef struct _FrdpSession FrdpSession;
+
+struct frdp_context
+{
+  rdpContext context;
+  FrdpSession *self;
+};
+typedef struct frdp_context frdpContext;
+
+G_END_DECLS
diff --git a/src/frdp-session.c b/src/frdp-session.c
index 643862d..0bdbd02 100644
--- a/src/frdp-session.c
+++ b/src/frdp-session.c
@@ -19,12 +19,15 @@
 #include <errno.h>
 #include <freerdp/freerdp.h>
 #include <freerdp/gdi/gdi.h>
+#include <freerdp/client/channels.h>
 #include <gdk/gdk.h>
 #include <gio/gio.h>
 #include <gtk/gtk.h>
 #include <math.h>
 
 #include "frdp-session.h"
+#include "frdp-context.h"
+#include "frdp-channels.h"
 
 #define SELECT_TIMEOUT 50
 #define FRDP_CONNECTION_THREAD_MAX_ERRORS 10
@@ -83,13 +86,6 @@ enum
 
 static guint signals[LAST_SIGNAL];
 
-struct frdp_context
-{
-  rdpContext context;
-  FrdpSession *self;
-};
-typedef struct frdp_context frdpContext;
-
 static void
 frdp_session_update_mouse_pointer (FrdpSession  *self)
 {
@@ -388,6 +384,43 @@ frdp_authenticate (freerdp  *freerdp_session,
 static gboolean
 frdp_pre_connect (freerdp *freerdp_session)
 {
+  rdpSettings *settings = freerdp_session->settings;
+  rdpContext *context = freerdp_session->context;
+
+  settings->OrderSupport[NEG_DSTBLT_INDEX] = TRUE;
+  settings->OrderSupport[NEG_PATBLT_INDEX] = TRUE;
+  settings->OrderSupport[NEG_SCRBLT_INDEX] = TRUE;
+  settings->OrderSupport[NEG_OPAQUE_RECT_INDEX] = TRUE;
+  settings->OrderSupport[NEG_DRAWNINEGRID_INDEX] = FALSE;
+  settings->OrderSupport[NEG_MULTIDSTBLT_INDEX] = FALSE;
+  settings->OrderSupport[NEG_MULTIPATBLT_INDEX] = FALSE;
+  settings->OrderSupport[NEG_MULTISCRBLT_INDEX] = FALSE;
+  settings->OrderSupport[NEG_MULTIOPAQUERECT_INDEX] = TRUE;
+  settings->OrderSupport[NEG_MULTI_DRAWNINEGRID_INDEX] = FALSE;
+  settings->OrderSupport[NEG_LINETO_INDEX] = TRUE;
+  settings->OrderSupport[NEG_POLYLINE_INDEX] = TRUE;
+  settings->OrderSupport[NEG_MEMBLT_INDEX] = TRUE;
+  settings->OrderSupport[NEG_MEM3BLT_INDEX] = FALSE;
+  settings->OrderSupport[NEG_MEMBLT_V2_INDEX] = TRUE;
+  settings->OrderSupport[NEG_MEM3BLT_V2_INDEX] = FALSE;
+  settings->OrderSupport[NEG_SAVEBITMAP_INDEX] = FALSE;
+  settings->OrderSupport[NEG_GLYPH_INDEX_INDEX] = TRUE;
+  settings->OrderSupport[NEG_FAST_INDEX_INDEX] = TRUE;
+  settings->OrderSupport[NEG_FAST_GLYPH_INDEX] = FALSE;
+  settings->OrderSupport[NEG_POLYGON_SC_INDEX] = FALSE;
+  settings->OrderSupport[NEG_POLYGON_CB_INDEX] = FALSE;
+  settings->OrderSupport[NEG_ELLIPSE_SC_INDEX] = FALSE;
+  settings->OrderSupport[NEG_ELLIPSE_CB_INDEX] = FALSE;
+
+  PubSub_SubscribeChannelConnected(context->pubSub,
+                                        frdp_OnChannelConnectedEventHandler);
+       PubSub_SubscribeChannelDisconnected(context->pubSub,
+                                           frdp_OnChannelDisconnectedEventHandler);
+
+  if (!freerdp_client_load_addins(context->channels,
+                                       settings))
+               return FALSE;
+
   return TRUE;
 }
 
@@ -439,12 +472,17 @@ frdp_end_paint (rdpContext *context)
 static gboolean
 frdp_post_connect (freerdp *freerdp_session)
 {
+  rdpSettings *settings;
+  rdpContext *context;
   FrdpSession *self = ((frdpContext *) freerdp_session->context)->self;
   cairo_format_t cairo_format;
   rdpGdi *gdi;
   guint32 color_format;
   gint stride;
+  ResizeWindowEventArgs e;
 
+  context = freerdp_session->context;
+  settings = context->settings;
   switch (frdp_session_get_best_color_depth (self)) {
     case 32:
       color_format = PIXEL_FORMAT_BGRA32;
@@ -487,9 +525,29 @@ frdp_post_connect (freerdp *freerdp_session)
                               gdi->width,
                               gdi->height);
 
+  EventArgsInit(&e, "frdp");
+       e.width = settings->DesktopWidth;
+       e.height = settings->DesktopHeight;
+       PubSub_OnResizeWindow(context->pubSub, freerdp_session->context, &e);
+
   return TRUE;
 }
 
+static void frdp_post_disconnect(freerdp* instance)
+{
+       rdpContext* context;
+
+       if (!instance || !instance->context)
+               return;
+
+       context = instance->context;
+       PubSub_UnsubscribeChannelConnected(context->pubSub,
+                                          frdp_OnChannelConnectedEventHandler);
+       PubSub_UnsubscribeChannelDisconnected(context->pubSub,
+                                             frdp_OnChannelDisconnectedEventHandler);
+       gdi_free(instance);
+}
+
 static gboolean
 idle_close (gpointer user_data)
 {
@@ -548,6 +606,7 @@ frdp_session_init_freerdp (FrdpSession *self)
   priv->freerdp_session = freerdp_new ();
   priv->freerdp_session->PreConnect = frdp_pre_connect;
   priv->freerdp_session->PostConnect = frdp_post_connect;
+  priv->freerdp_session->PostDisconnect = frdp_post_disconnect;
   priv->freerdp_session->Authenticate = frdp_authenticate;
   priv->freerdp_session->VerifyCertificate = frdp_certificate_verify;
   priv->freerdp_session->VerifyChangedCertificate = frdp_changed_certificate_verify;
@@ -845,8 +904,6 @@ frdp_session_close (FrdpSession *self)
   }
 
   if (self->priv->freerdp_session != NULL) {
-    gdi_free (self->priv->freerdp_session);
-
     self->priv->is_connected = FALSE;
 
     g_debug ("Closing RDP session");
diff --git a/src/meson.build b/src/meson.build
index acecc39..4974ce4 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -2,12 +2,15 @@ api_version = '0.1'
 
 gtk_frdp_sources = [
   'frdp-display.c',
+  'frdp-channels.c',
   'frdp-session.c',
 ]
 
 gtk_frdp_headers = [
   'frdp-display.h',
+  'frdp-channels.h',
   'frdp-session.h',
+  'frdp-context.h',
   'gtk-frdp.h',
 ]
 
@@ -40,7 +43,7 @@ gtk_frdp_deps = [
   # The 2.0.0-rc4 version is needed at least, but there is no easy way to detect this.
   dependency('winpr2', version: '>= 2.0.0'),
   dependency('freerdp2', version: '>= 2.0.0'),
-
+  dependency('freerdp-client2'),
   dependency('gio-2.0', version: '>= 2.50'),
   dependency('gtk+-3.0'),
   cc.find_library('m'),