Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/uwac/libuwac/uwac-output.c

@@ -0,0 +1,183 @@
+/*
+ * Copyright © 2014 David FORT <contact@hardening-consulting.com>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+#include "uwac-priv.h"
+#include "uwac-utils.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#define TARGET_OUTPUT_INTERFACE 2U
+
+static bool dupstr(char** dst, const char* src)
+{
+	assert(dst);
+	free(*dst);
+	*dst = nullptr;
+	if (!src)
+		return true;
+	*dst = strdup(src);
+	return *dst != nullptr;
+}
+
+static void output_handle_geometry(void* data, struct wl_output* wl_output, int x, int y,
+                                   int physical_width, int physical_height, int subpixel,
+                                   const char* make, const char* model, int transform)
+{
+	UwacOutput* output = data;
+	assert(output);
+
+	output->position.x = x;
+	output->position.y = y;
+	output->transform = transform;
+
+	if (!dupstr(&output->make, make))
+	{
+		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY, "%s: unable to strdup make\n",
+		                        __func__));
+	}
+
+	if (!dupstr(&output->model, model))
+	{
+		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY,
+		                        "%s: unable to strdup model\n", __func__));
+	}
+
+	UwacEvent* event = UwacDisplayNewEvent(output->display, UWAC_EVENT_OUTPUT_GEOMETRY);
+	event->output_geometry.output = output;
+	event->output_geometry.x = x;
+	event->output_geometry.y = y;
+	event->output_geometry.physical_width = physical_width;
+	event->output_geometry.physical_height = physical_height;
+	event->output_geometry.subpixel = subpixel;
+	event->output_geometry.make = output->make;
+	event->output_geometry.model = output->model;
+	event->output_geometry.transform = transform;
+}
+
+static void output_handle_done(void* data, struct wl_output* wl_output)
+{
+	UwacOutput* output = data;
+	assert(output);
+
+	output->doneReceived = true;
+}
+
+static void output_handle_scale(void* data, struct wl_output* wl_output, int32_t scale)
+{
+	UwacOutput* output = data;
+	assert(output);
+
+	output->scale = scale;
+	if (scale > output->display->actual_scale)
+		output->display->actual_scale = scale;
+}
+
+static void output_handle_name(void* data, struct wl_output* wl_output, const char* name)
+{
+	UwacOutput* output = data;
+	assert(output);
+
+	if (!dupstr(&output->name, name))
+	{
+		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY, "%s: unable to strdup make\n",
+		                        __func__));
+	}
+}
+
+static void output_handle_description(void* data, struct wl_output* wl_output,
+                                      const char* description)
+{
+	UwacOutput* output = data;
+	assert(output);
+
+	if (!dupstr(&output->description, description))
+	{
+		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY, "%s: unable to strdup make\n",
+		                        __func__));
+	}
+}
+
+static void output_handle_mode(void* data, struct wl_output* wl_output, uint32_t flags, int width,
+                               int height, int refresh)
+{
+	UwacOutput* output = data;
+	assert(output);
+	// UwacDisplay *display = output->display;
+
+	if (output->doneNeeded && output->doneReceived)
+	{
+		/* TODO: we should clear the mode list */
+	}
+
+	if (flags & WL_OUTPUT_MODE_CURRENT)
+	{
+		output->resolution.width = width;
+		output->resolution.height = height;
+		/*	output->allocation.width = width;
+		    output->allocation.height = height;
+		    if (display->output_configure_handler)
+		        (*display->output_configure_handler)(
+		                    output, display->user_data);*/
+	}
+}
+
+static const struct wl_output_listener output_listener = {
+	output_handle_geometry, output_handle_mode, output_handle_done,
+	output_handle_scale,    output_handle_name, output_handle_description
+};
+
+UwacOutput* UwacCreateOutput(UwacDisplay* d, uint32_t id, uint32_t version)
+{
+	UwacOutput* o = xzalloc(sizeof *o);
+	if (!o)
+		return nullptr;
+
+	o->display = d;
+	o->server_output_id = id;
+	o->doneNeeded = (version > 1);
+	o->doneReceived = false;
+	o->output = wl_registry_bind(d->registry, id, &wl_output_interface,
+	                             min(TARGET_OUTPUT_INTERFACE, version));
+	wl_output_add_listener(o->output, &output_listener, o);
+
+	wl_list_insert(d->outputs.prev, &o->link);
+	return o;
+}
+
+int UwacDestroyOutput(UwacOutput* output)
+{
+	if (!output)
+		return UWAC_SUCCESS;
+
+	free(output->make);
+	free(output->model);
+	free(output->name);
+	free(output->description);
+
+	wl_output_destroy(output->output);
+	wl_list_remove(&output->link);
+	free(output);
+
+	return UWAC_SUCCESS;
+}