Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/server/shadow/shadow_audin.c

@@ -0,0 +1,106 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ *
+ * Copyright 2015 Jiang Zihao <zihao.jiang@yahoo.com>
+ * Copyright 2023 Pascal Nowack <Pascal.Nowack@gmx.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <freerdp/config.h>
+
+#include <freerdp/log.h>
+#include "shadow.h"
+
+#include "shadow_audin.h"
+#include <freerdp/server/server-common.h>
+
+#if defined(CHANNEL_AUDIN_SERVER)
+#include <freerdp/server/audin.h>
+#endif
+
+#if defined(CHANNEL_AUDIN_SERVER)
+
+WINPR_ATTR_NODISCARD
+static UINT AudinServerData(audin_server_context* audin, const SNDIN_DATA* data)
+{
+	rdpShadowClient* client = nullptr;
+	rdpShadowSubsystem* subsystem = nullptr;
+
+	WINPR_ASSERT(audin);
+	WINPR_ASSERT(data);
+
+	client = audin->userdata;
+	WINPR_ASSERT(client);
+	WINPR_ASSERT(client->server);
+	subsystem = client->server->subsystem;
+	WINPR_ASSERT(subsystem);
+
+	if (!client->mayInteract)
+		return CHANNEL_RC_OK;
+
+	if (!IFCALLRESULT(TRUE, subsystem->AudinServerReceiveSamples, subsystem, client,
+	                  audin_server_get_negotiated_format(client->audin), data->Data))
+		return ERROR_INTERNAL_ERROR;
+
+	return CHANNEL_RC_OK;
+}
+
+#endif
+
+BOOL shadow_client_audin_init(rdpShadowClient* client)
+{
+	WINPR_ASSERT(client);
+
+#if defined(CHANNEL_AUDIN_SERVER)
+	audin_server_context* audin = client->audin = audin_server_context_new(client->vcm);
+
+	if (!audin)
+		return FALSE;
+
+	audin->userdata = client;
+
+	audin->Data = AudinServerData;
+
+	if (client->subsystem->audinFormats)
+	{
+		if (client->subsystem->nAudinFormats > SSIZE_MAX)
+			goto fail;
+
+		if (!audin_server_set_formats(client->audin, (SSIZE_T)client->subsystem->nAudinFormats,
+		                              client->subsystem->audinFormats))
+			goto fail;
+	}
+	else
+	{
+		if (!audin_server_set_formats(client->audin, -1, nullptr))
+			goto fail;
+	}
+
+	return TRUE;
+fail:
+	audin_server_context_free(audin);
+	client->audin = nullptr;
+#endif
+	return FALSE;
+}
+
+void shadow_client_audin_uninit(rdpShadowClient* client)
+{
+	WINPR_ASSERT(client);
+
+#if defined(CHANNEL_AUDIN_SERVER)
+	audin_server_context_free(client->audin);
+	client->audin = nullptr;
+#endif
+}