1 files changed, 96 insertions, 0 deletions
diff --git a/FreeRTOS-Plus/Source/Utilities/mbedtls_freertos/mbedtls_bio_freertos_cellular.c b/FreeRTOS-Plus/Source/Utilities/mbedtls_freertos/mbedtls_bio_freertos_cellular.c
new file mode 100644
index 000000000..7c4d916aa
--- /dev/null
+++ b/FreeRTOS-Plus/Source/Utilities/mbedtls_freertos/mbedtls_bio_freertos_cellular.c
@@ -0,0 +1,96 @@
+/*
+ * FreeRTOS V202107.00
+ * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * https://www.FreeRTOS.org
+ * https://github.com/FreeRTOS
+ *
+ */
+
+/**
+ * @file mbedtls_bio_freertos_cellular.c
+ * @brief Implements mbed TLS platform send/receive functions for cellular.
+ */
+
+/* FreeRTOS includes. */
+#include "FreeRTOS.h"
+#include "FreeRTOS_Sockets.h"
+
+/* mbed TLS includes. */
+#include "mbedtls_config.h"
+#include "threading_alt.h"
+#include "mbedtls/entropy.h"
+#include "mbedtls/ssl.h"
+
+/*-----------------------------------------------------------*/
+
+/**
+ * @brief Sends data over cellular sockets.
+ *
+ * @param[in] ctx The network context containing the socket handle.
+ * @param[in] buf Buffer containing the bytes to send.
+ * @param[in] len Number of bytes to send from the buffer.
+ *
+ * @return Number of bytes sent on success; else a negative value.
+ */
+int mbedtls_cellular_send( void * ctx,
+                           const unsigned char * buf,
+                           size_t len )
+{
+    configASSERT( ctx != NULL );
+    configASSERT( buf != NULL );
+
+    return Sockets_Send( ( Socket_t ) ctx, buf, len );
+}
+
+/*-----------------------------------------------------------*/
+
+/**
+ * @brief Receives data from cellular socket.
+ *
+ * @param[in] ctx The network context containing the socket handle.
+ * @param[out] buf Buffer to receive bytes into.
+ * @param[in] len Number of bytes to receive from the network.
+ *
+ * @return Number of bytes received if successful; Negative value on error.
+ */
+int mbedtls_cellular_recv( void * ctx,
+                           unsigned char * buf,
+                           size_t len )
+{
+    int recvStatus = 0;
+    int returnStatus = -1;
+
+    configASSERT( ctx != NULL );
+    configASSERT( buf != NULL );
+
+    recvStatus = Sockets_Recv( ( Socket_t ) ctx, buf, len );
+
+    if( recvStatus < 0 )
+    {
+        returnStatus = MBEDTLS_ERR_SSL_INTERNAL_ERROR;
+    }
+    else
+    {
+        returnStatus = recvStatus;
+    }
+
+    return returnStatus;
+}