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nx_secure/src/nx_secure_tls_remote_certificate_allocate.c
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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Secure Component */
/** */
/** Transport Layer Security (TLS) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SECURE_SOURCE_CODE
#include "nx_secure_tls.h"
#include "nx_secure_x509.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_secure_tls_remote_certificate_allocate PORTABLE C */
/* 6.1.6 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This service adds an uninitialized NX_SECURE_TLS_CERTIFICATE */
/* structure instance to a TLS session for the purpose of allocating */
/* space for certificates provided by a remote host during a TLS */
/* session. The remote certificate data is parsed by NetX Secure TLS */
/* and that information is used to populate the certificate structure */
/* instance provided to this function. Certificates added in this */
/* manner are placed in a linked list. */
/* */
/* The "raw_certificate_buffer" parameter is a pointer to a caller- */
/* supplied space which can be used to store the incoming certificate */
/* data for parsing. The size of the buffer should be large enough to */
/* accommodate the largest certificate your application expects to */
/* receive. Typical certificate lengths are 1-2KBytes when using */
/* 2048-bit RSA. Larger key sizes will result in larger certificates. */
/* */
/* INPUT */
/* */
/* tls_session Pointer to TLS Session */
/* certificate Pointer to certificate */
/* raw_certificate_buffer Buffer for storing cert */
/* buffer_size Size of cert buffer */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* tx_mutex_get Get protection mutex */
/* tx_mutex_put Put protection mutex */
/* _nx_secure_x509_store_certificate_add Add certificate to free store */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Timothy Stapko Initial Version 6.0 */
/* 09-30-2020 Timothy Stapko Modified comment(s), */
/* resulting in version 6.1 */
/* 04-02-2021 Timothy Stapko Modified comment(s), */
/* updated X.509 return value, */
/* resulting in version 6.1.6 */
/* */
/**************************************************************************/
UINT _nx_secure_tls_remote_certificate_allocate(NX_SECURE_TLS_SESSION *tls_session,
NX_SECURE_X509_CERT *certificate,
UCHAR *raw_certificate_buffer, UINT buffer_size)
{
UINT status;
/* Get the protection. */
tx_mutex_get(&_nx_secure_tls_protection, TX_WAIT_FOREVER);
certificate -> nx_secure_x509_certificate_raw_data = raw_certificate_buffer;
certificate -> nx_secure_x509_certificate_raw_buffer_size = buffer_size;
/* This certificate was allocated by the user application and not by TLS. */
certificate->nx_secure_x509_user_allocated_cert = NX_TRUE;
/* Add the certificate to the TLS session credentials X509 store. */
status = _nx_secure_x509_store_certificate_add(certificate, &tls_session -> nx_secure_tls_credentials.nx_secure_tls_certificate_store,
NX_SECURE_X509_CERT_LOCATION_FREE);
/* Release the protection. */
tx_mutex_put(&_nx_secure_tls_protection);
/* Translate some X.509 return values into TLS return values. */
if (status == NX_SECURE_X509_CERT_ID_DUPLICATE)
{
return(NX_SECURE_TLS_CERT_ID_DUPLICATE);
}
return(status);
}