/*============================================================================
* Create a server socket
*===========================================================================*/
OpcUa_StatusCode OPCUA_DLLCALL OpcUa_P_SocketManager_CreateServer( OpcUa_SocketManager a_pSocketManager,
OpcUa_StringA a_sAddress,
OpcUa_Boolean a_bListenOnAllInterfaces,
OpcUa_Socket_EventCallback a_pfnSocketCallBack,
OpcUa_Void* a_pCallbackData,
OpcUa_Socket* a_pSocket)
{
OpcUa_InternalSocketManager* pInternalSocketManager = OpcUa_Null;
OpcUa_UInt16 uPort = 0;
OpcUa_StringA sRemoteAdress = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_Socket, "CreateServer");
#if !OPCUA_MULTITHREADED
if(a_pSocketManager == OpcUa_Null)
{
a_pSocketManager = OpcUa_Socket_g_SocketManager;
}
#endif
OpcUa_ReturnErrorIfArgumentNull(a_pSocketManager);
OpcUa_ReturnErrorIfArgumentNull(a_pSocket);
pInternalSocketManager = (OpcUa_InternalSocketManager*)a_pSocketManager;
/* parse address */
uStatus = OpcUa_P_ParseUrl( a_sAddress,
&sRemoteAdress,
&uPort);
OpcUa_ReturnErrorIfBad(uStatus);
if(a_bListenOnAllInterfaces)
{
if(sRemoteAdress != OpcUa_Null)
{
OpcUa_P_Memory_Free(sRemoteAdress);
sRemoteAdress = OpcUa_Null;
}
}
uStatus = OpcUa_SocketManager_InternalCreateServer( pInternalSocketManager,
sRemoteAdress,
uPort,
a_pfnSocketCallBack,
a_pCallbackData,
a_pSocket);
OpcUa_GotoErrorIfBad(uStatus);
OpcUa_P_SocketManager_InterruptLoop(pInternalSocketManager,
OPCUA_SOCKET_RENEWLOOP_EVENT,
OpcUa_False);
if(sRemoteAdress != OpcUa_Null)
{
OpcUa_P_Memory_Free(sRemoteAdress);
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(sRemoteAdress != OpcUa_Null)
{
OpcUa_P_Memory_Free(sRemoteAdress);
}
OpcUa_FinishErrorHandling;
}
/*===========================================================================*
OpcUa_P_OpenSSL_RSA_Public_Encrypt
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_RSA_Public_Encrypt(
OpcUa_CryptoProvider* a_pProvider,
OpcUa_Byte* a_pPlainText,
OpcUa_UInt32 a_plainTextLen,
OpcUa_Key* a_publicKey,
OpcUa_Int16 a_padding,
OpcUa_Byte* a_pCipherText,
OpcUa_UInt32* a_pCipherTextLen)
{
EVP_PKEY* pPublicKey = OpcUa_Null;
OpcUa_UInt32 uKeySize = 0;
OpcUa_UInt32 uEncryptedDataSize = 0;
OpcUa_UInt32 uPlainTextPosition = 0;
OpcUa_UInt32 uCipherTextPosition = 0;
OpcUa_UInt32 uBytesToEncrypt = 0;
OpcUa_Int32 iEncryptedBytes = 0;
const unsigned char *pData;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "RSA_Public_Encrypt");
OpcUa_ReferenceParameter(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_publicKey);
OpcUa_ReturnErrorIfArgumentNull(a_publicKey->Key.Data);
OpcUa_ReturnErrorIfArgumentNull(a_pCipherTextLen);
*a_pCipherTextLen = 0;
if((OpcUa_Int32)a_plainTextLen < 1)
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoErrorIfBad(uStatus);
}
if(a_publicKey->Type != OpcUa_Crypto_KeyType_Rsa_Public)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadInvalidArgument);
}
pData = a_publicKey->Key.Data;
pPublicKey = d2i_PublicKey(EVP_PKEY_RSA, OpcUa_Null, &pData, a_publicKey->Key.Length);
if ( pPublicKey != OpcUa_Null )
{
uKeySize = RSA_size(pPublicKey->pkey.rsa);
}
else
{
OpcUa_GotoErrorWithStatus(OpcUa_BadInvalidArgument);
}
/* check padding type */
switch(a_padding)
{
case RSA_PKCS1_PADDING:
{
uEncryptedDataSize = uKeySize - 11;
break;
}
case RSA_PKCS1_OAEP_PADDING:
{
uEncryptedDataSize = uKeySize - 42;
break;
}
case RSA_NO_PADDING:
{
uEncryptedDataSize = uKeySize;
break;
}
default:
{
OpcUa_GotoErrorWithStatus(OpcUa_BadNotSupported);
}
}
if(a_plainTextLen < uEncryptedDataSize)
{
uBytesToEncrypt = a_plainTextLen;
}
else
{
uBytesToEncrypt = uEncryptedDataSize;
}
while(uPlainTextPosition < a_plainTextLen)
{
/* the last part could be smaller */
if((a_plainTextLen >= uEncryptedDataSize) && ((a_plainTextLen - uPlainTextPosition) < uEncryptedDataSize))
{
uBytesToEncrypt = a_plainTextLen - uPlainTextPosition;
}
if((a_pCipherText != OpcUa_Null) && (a_pPlainText != OpcUa_Null))
{
iEncryptedBytes = RSA_public_encrypt( uBytesToEncrypt, /* how much to encrypt */
a_pPlainText + uPlainTextPosition, /* what to encrypt */
a_pCipherText + uCipherTextPosition,/* where to encrypt */
pPublicKey->pkey.rsa, /* public key */
a_padding); /* padding mode */
if(iEncryptedBytes < 0)
{
const char* sError = OpcUa_Null;
unsigned long error = 0;
error = ERR_get_error();
ERR_load_crypto_strings();
sError = ERR_reason_error_string(error);
sError = ERR_func_error_string(error);
sError = ERR_lib_error_string(error);
uStatus = OpcUa_Bad;
OpcUa_GotoError;
}
}
else
{
iEncryptedBytes = uKeySize;
}
*a_pCipherTextLen = *a_pCipherTextLen + iEncryptedBytes;
uCipherTextPosition += uKeySize;
uPlainTextPosition += uBytesToEncrypt;
}
EVP_PKEY_free(pPublicKey);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pPublicKey != OpcUa_Null)
{
EVP_PKEY_free(pPublicKey);
}
*a_pCipherTextLen = (OpcUa_UInt32)-1;
OpcUa_FinishErrorHandling;
}
static
OpcUa_StatusCode OpcUa_UadpDataSetMessageHeader_WriteBinary(OpcUa_UadpDataSetMessageHeader* a_pValue, OpcUa_Byte **a_pBuffer, OpcUa_UInt32 *a_pSize)
{
OpcUa_Byte dataSetFlags1;
OpcUa_Byte dataSetFlags2;
OpcUa_InitializeStatus(OpcUa_Module_PubSub, "OpcUa_UadpDataSetMessageHeader_WriteBinary");
OpcUa_ReturnErrorIfArgumentNull(a_pValue);
OpcUa_ReturnErrorIfArgumentNull(a_pBuffer);
OpcUa_ReturnErrorIfArgumentNull(*a_pBuffer);
OpcUa_ReturnErrorIfArgumentNull(a_pSize);
/* Flags 1 */
/* Bit 0 DataSetMessage is valid */
/* Bit 1-2 Field Encoding */
/* Bit 3 SequenceNumber enabled */
/* Bit 4 Status enabled */
/* Bit 5 Major Version */
/* Bit 6 Minor Version */
dataSetFlags1 = (OpcUa_Byte)a_pValue->DataSetEncodingFlags & 0x79;
dataSetFlags1 |= (OpcUa_Byte)a_pValue->FieldEncoding << 1;
/* Flags 2 */
/* Bits 0-3 MessageType */
/* Bit 4 Timestamp */
/* Bit 5 PicoSeconds */
dataSetFlags2 = (OpcUa_Byte)((a_pValue->DataSetEncodingFlags & 0x3000) >> 8);
dataSetFlags2 |= a_pValue->DataSetMessageType;
if(dataSetFlags2)
{
dataSetFlags1 |= 0x80;
}
OpcUa_UadpEncode_Direct(Byte, &dataSetFlags1);
if(dataSetFlags2)
{
OpcUa_UadpEncode_Direct(Byte, &dataSetFlags2);
}
if(a_pValue->DataSetEncodingFlags & OpcUa_UadpDataMessage_FlagsEncodingBit_SequenceNumber)
{
OpcUa_UadpEncode_Direct(UInt16, &a_pValue->DataSetMessageSequenceNumber);
}
if(a_pValue->DataSetMessageType != OpcUa_DataSetMessageType_KeepAlive)
{
a_pValue->DataSetMessageSequenceNumber++;
}
if(a_pValue->DataSetEncodingFlags & OpcUa_UadpDataMessage_FlagsEncodingBit_Timestamp)
{
/* convert structure to UInt64 */
OpcUa_UInt64 timeValue;
timeValue = (OpcUa_UInt32)a_pValue->Timestamp.dwHighDateTime;
timeValue <<= 32;
timeValue += (OpcUa_UInt32)a_pValue->Timestamp.dwLowDateTime;
OpcUa_UadpEncode_Direct(UInt64, &timeValue);
}
if(a_pValue->DataSetEncodingFlags & OpcUa_UadpDataMessage_FlagsEncodingBit_PicoSeconds)
{
OpcUa_UadpEncode_Direct(UInt16, &a_pValue->PicoSeconds);
}
if(a_pValue->DataSetEncodingFlags & OpcUa_UadpDataMessage_FlagsEncodingBit_Status)
{
/* Write only the 2 high order Bytes */
OpcUa_UInt16 statusCode = (a_pValue->StatusCode >> 16);
OpcUa_UadpEncode_Direct(UInt16, &statusCode);
}
/*============================================================================
* OpcUa_P_PKIFactory_CreatePKIProvider
*===========================================================================*/
OpcUa_StatusCode OPCUA_DLLCALL OpcUa_P_PKIFactory_CreatePKIProvider(OpcUa_Void* a_pCertificateStoreConfig,
OpcUa_PKIProvider* a_pPkiProvider)
{
OpcUa_P_OpenSSL_CertificateStore_Config* pCertificateStoreCfg = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_P_PKIFactory, "CreatePKIProvider");
OpcUa_ReturnErrorIfArgumentNull(a_pCertificateStoreConfig);
OpcUa_ReturnErrorIfArgumentNull(a_pPkiProvider);
pCertificateStoreCfg = (OpcUa_P_OpenSSL_CertificateStore_Config*)a_pCertificateStoreConfig;
a_pPkiProvider->Handle = a_pCertificateStoreConfig;
switch(pCertificateStoreCfg->PkiType)
{
case OpcUa_NO_PKI:
{
a_pPkiProvider->OpenCertificateStore = OpcUa_P_OpenSSL_PKI_NoSecurity_OpenCertificateStore;
a_pPkiProvider->CloseCertificateStore = OpcUa_P_OpenSSL_PKI_NoSecurity_CloseCertificateStore;
a_pPkiProvider->ValidateCertificate = OpcUa_P_OpenSSL_PKI_NoSecurity_ValidateCertificate;
a_pPkiProvider->LoadCertificate = OpcUa_P_OpenSSL_PKI_NoSecurity_LoadCertificate;
a_pPkiProvider->SaveCertificate = OpcUa_P_OpenSSL_PKI_NoSecurity_SaveCertificate;
a_pPkiProvider->LoadPrivateKeyFromFile = OpcUa_P_OpenSSL_PKI_NoSecurity_LoadPrivateKeyFromFile;
a_pPkiProvider->ExtractCertificateData = OpcUa_P_OpenSSL_PKI_NoSecurity_ExtractCertificateData;
break;
}
#if OPCUA_SUPPORT_PKI
#if OPCUA_SUPPORT_PKI_OVERRIDE
case OpcUa_Override:
{
/* check if replacement for default is set and use it instead of the default */
OpcUa_PKIProvider* pOverride = (OpcUa_PKIProvider*)pCertificateStoreCfg->Override;
OpcUa_GotoErrorIfArgumentNull(pOverride);
if(pOverride->OpenCertificateStore == OpcUa_Null)
{
a_pPkiProvider->OpenCertificateStore = OpcUa_P_OpenSSL_PKI_OpenCertificateStore;
}
else
{
a_pPkiProvider->OpenCertificateStore = pOverride->OpenCertificateStore;
}
if(pOverride->CloseCertificateStore == OpcUa_Null)
{
a_pPkiProvider->CloseCertificateStore = OpcUa_P_OpenSSL_PKI_CloseCertificateStore;
}
else
{
a_pPkiProvider->CloseCertificateStore = pOverride->CloseCertificateStore;
}
if(pOverride->ValidateCertificate == OpcUa_Null)
{
a_pPkiProvider->ValidateCertificate = OpcUa_P_OpenSSL_PKI_ValidateCertificate;
}
else
{
a_pPkiProvider->ValidateCertificate = pOverride->ValidateCertificate;
}
if(pOverride->LoadCertificate == OpcUa_Null)
{
a_pPkiProvider->LoadCertificate = OpcUa_P_OpenSSL_PKI_LoadCertificate;
}
else
{
a_pPkiProvider->LoadCertificate = pOverride->LoadCertificate;
}
if(pOverride->SaveCertificate == OpcUa_Null)
{
a_pPkiProvider->SaveCertificate = OpcUa_P_OpenSSL_PKI_SaveCertificate;
}
else
{
a_pPkiProvider->SaveCertificate = pOverride->SaveCertificate;
}
if(pOverride->LoadPrivateKeyFromFile == OpcUa_Null)
{
a_pPkiProvider->LoadPrivateKeyFromFile = OpcUa_P_OpenSSL_RSA_LoadPrivateKeyFromFile;
}
else
{
a_pPkiProvider->LoadPrivateKeyFromFile = pOverride->LoadPrivateKeyFromFile;
}
if(pOverride->ExtractCertificateData == OpcUa_Null)
{
a_pPkiProvider->ExtractCertificateData = OpcUa_P_OpenSSL_PKI_ExtractCertificateData;
}
else
{
a_pPkiProvider->ExtractCertificateData = pOverride->ExtractCertificateData;
}
break;
}
#endif /* OPCUA_SUPPORT_PKI_OVERRIDE */
#if OPCUA_SUPPORT_PKI_OPENSSL
case OpcUa_OpenSSL_PKI:
{
a_pPkiProvider->OpenCertificateStore = OpcUa_P_OpenSSL_PKI_OpenCertificateStore;
a_pPkiProvider->CloseCertificateStore = OpcUa_P_OpenSSL_PKI_CloseCertificateStore;
a_pPkiProvider->ValidateCertificate = OpcUa_P_OpenSSL_PKI_ValidateCertificate;
a_pPkiProvider->LoadCertificate = OpcUa_P_OpenSSL_PKI_LoadCertificate;
a_pPkiProvider->SaveCertificate = OpcUa_P_OpenSSL_PKI_SaveCertificate;
a_pPkiProvider->LoadPrivateKeyFromFile = OpcUa_P_OpenSSL_RSA_LoadPrivateKeyFromFile;
a_pPkiProvider->ExtractCertificateData = OpcUa_P_OpenSSL_PKI_ExtractCertificateData;
break;
}
#endif /* OPCUA_SUPPORT_PKI_OPENSSL */
#if OPCUA_SUPPORT_PKI_WIN32
case OpcUa_Win32_PKI:
{
a_pPkiProvider->OpenCertificateStore = OpcUa_P_Win32_PKI_OpenCertificateStore;
a_pPkiProvider->CloseCertificateStore = OpcUa_P_Win32_PKI_CloseCertificateStore;
a_pPkiProvider->ValidateCertificate = OpcUa_P_Win32_PKI_ValidateCertificate;
a_pPkiProvider->LoadCertificate = OpcUa_P_Win32_PKI_LoadCertificate;
a_pPkiProvider->SaveCertificate = OpcUa_P_Win32_PKI_SaveCertificate;
a_pPkiProvider->LoadPrivateKeyFromFile = OpcUa_P_Win32_LoadPrivateKeyFromKeyStore;
a_pPkiProvider->ExtractCertificateData = OpcUa_P_OpenSSL_PKI_ExtractCertificateData;
break;
}
#endif /* OPCUA_SUPPORT_PKI_WIN32 */
#endif /* OPCUA_SUPPORT_PKI */
default:
{
uStatus = OpcUa_BadNotSupported;
}
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_ProxyStub_Initialize
*===========================================================================*/
OpcUa_StatusCode OPCUA_DLLCALL OpcUa_ProxyStub_Initialize(OpcUa_Handle a_pPlatformLayerCalltable,
OpcUa_ProxyStubConfiguration* a_pProxyStubConfiguration)
{
OpcUa_Boolean bSkip = OpcUa_False;
OpcUa_InitializeStatus(OpcUa_Module_ProxyStub, "Initialize");
OpcUa_ReturnErrorIfArgumentNull(a_pProxyStubConfiguration)
OpcUa_ReturnErrorIfArgumentNull(a_pPlatformLayerCalltable);
/* set global platform layer handle */
OpcUa_ProxyStub_g_PlatformLayerCalltable = (OpcUa_Port_CallTable *)a_pPlatformLayerCalltable;
#if OPCUA_USE_SYNCHRONISATION
if(OpcUa_ProxyStub_g_hGlobalsMutex == OpcUa_Null)
{
uStatus = OPCUA_P_MUTEX_CREATE(&OpcUa_ProxyStub_g_hGlobalsMutex);
OpcUa_GotoErrorIfBad(uStatus);
}
#endif /* OPCUA_USE_SYNCHRONISATION */
#if OPCUA_USE_SYNCHRONISATION
OPCUA_P_MUTEX_LOCK(OpcUa_ProxyStub_g_hGlobalsMutex);
#endif /* OPCUA_USE_SYNCHRONISATION */
OpcUa_ProxyStub_g_uNoOfInits++;
if(OpcUa_ProxyStub_g_uNoOfInits > 1)
{
bSkip = OpcUa_True;
}
#if OPCUA_USE_SYNCHRONISATION
OPCUA_P_MUTEX_UNLOCK(OpcUa_ProxyStub_g_hGlobalsMutex);
#endif /* OPCUA_USE_SYNCHRONISATION */
if(bSkip == OpcUa_False)
{
/* set global configuration object */
uStatus = OpcUa_ProxyStub_ReInitialize(a_pProxyStubConfiguration);
OpcUa_GotoErrorIfBad(uStatus);
/* initialize tracer */
#if OPCUA_TRACE_ENABLE
uStatus = OpcUa_Trace_Initialize();
OpcUa_GotoErrorIfBad(uStatus);
OpcUa_Trace(OPCUA_TRACE_LEVEL_INFO, "OpcUa_ProxyStub_Initialize: Tracer has been initialized!\n");
#endif /* OPCUA_TRACE_ENABLE */
/* initialize networking. */
OpcUa_Trace(OPCUA_TRACE_LEVEL_INFO, "OpcUa_ProxyStub_Initialize: Network Module...\n");
uStatus = OPCUA_P_INITIALIZENETWORK();
OpcUa_GotoErrorIfBad(uStatus);
OpcUa_Trace(OPCUA_TRACE_LEVEL_INFO, "OpcUa_ProxyStub_Initialize: Network Module done!\n");
uStatus = OpcUa_EncodeableTypeTable_Create(&OpcUa_ProxyStub_g_EncodeableTypes);
OpcUa_GotoErrorIfBad(uStatus);
uStatus = OpcUa_EncodeableTypeTable_AddTypes(&OpcUa_ProxyStub_g_EncodeableTypes, OpcUa_KnownEncodeableTypes);
OpcUa_GotoErrorIfBad(uStatus);
OpcUa_StringTable_Initialize(&OpcUa_ProxyStub_g_NamespaceUris);
uStatus = OpcUa_StringTable_AddStringList(&OpcUa_ProxyStub_g_NamespaceUris, OpcUa_ProxyStub_StandardNamespaceUris);
OpcUa_GotoErrorIfBad(uStatus);
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_ProxyStub_Clear();
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_PKI_ValidateCertificate
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_PKI_ValidateCertificate(
OpcUa_PKIProvider* a_pProvider,
OpcUa_ByteString* a_pCertificate,
OpcUa_Void* a_pCertificateStore,
OpcUa_Int* a_pValidationCode /* Validation return codes from OpenSSL */
)
{
OpcUa_P_OpenSSL_CertificateStore_Config* pCertificateStoreCfg;
const unsigned char* p;
X509* pX509Certificate = OpcUa_Null;
STACK_OF(X509)* pX509Chain = OpcUa_Null;
X509_STORE_CTX* verify_ctx = OpcUa_Null; /* holds data used during verification process */
char CertFile[MAX_PATH];
struct dirent **dirlist = NULL;
int numCertificates = 0, i;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "PKI_ValidateCertificate");
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider->Handle);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificateStore);
OpcUa_ReturnErrorIfArgumentNull(a_pValidationCode);
pCertificateStoreCfg = (OpcUa_P_OpenSSL_CertificateStore_Config*)a_pProvider->Handle;
/* convert DER encoded bytestring certificate to openssl X509 certificate */
p = a_pCertificate->Data;
if(!(pX509Certificate = d2i_X509((X509**)OpcUa_Null, &p, a_pCertificate->Length)))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
while(p < a_pCertificate->Data + a_pCertificate->Length)
{
X509* pX509AddCertificate;
if(!(pX509AddCertificate = d2i_X509((X509**)OpcUa_Null, &p, a_pCertificate->Data + a_pCertificate->Length - p)))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
if(pX509Chain == NULL)
{
pX509Chain = sk_X509_new_null();
OpcUa_GotoErrorIfAllocFailed(pX509Chain);
}
if(!sk_X509_push(pX509Chain, pX509AddCertificate))
{
X509_free(pX509AddCertificate);
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
/* create verification context and initialize it */
if(!(verify_ctx = X509_STORE_CTX_new()))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
#if (OPENSSL_VERSION_NUMBER > 0x00907000L)
if(X509_STORE_CTX_init(verify_ctx, (X509_STORE*)a_pCertificateStore, pX509Certificate, pX509Chain) != 1)
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
#else
X509_STORE_CTX_init(verify_ctx, (X509_STORE*)a_pCertificateStore, pX509Certificate, pX509Chain);
#endif
if(X509_STORE_CTX_set_app_data(verify_ctx, pCertificateStoreCfg) != 1)
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
if((pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_CHECK_REVOCATION_ALL) == OPCUA_P_PKI_OPENSSL_CHECK_REVOCATION_ALL_EXCEPT_SELF_SIGNED
&& !verify_ctx->check_issued(verify_ctx, pX509Certificate, pX509Certificate))
{
/* set the flags of the store so that CRLs are consulted */
X509_STORE_CTX_set_flags(verify_ctx, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
}
/* verify the certificate */
*a_pValidationCode = X509_V_OK;
if(X509_verify_cert(verify_ctx) <= 0)
{
*a_pValidationCode = verify_ctx->error;
switch(verify_ctx->error)
{
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_CRL_NOT_YET_VALID:
case X509_V_ERR_CRL_HAS_EXPIRED:
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
{
uStatus = OpcUa_BadCertificateTimeInvalid;
break;
}
case X509_V_ERR_CERT_REVOKED:
{
uStatus = OpcUa_BadCertificateRevoked;
break;
}
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
{
uStatus = OpcUa_BadCertificateUntrusted;
break;
}
case X509_V_ERR_CERT_SIGNATURE_FAILURE:
{
uStatus = OpcUa_BadSecurityChecksFailed;
break;
}
default:
{
uStatus = OpcUa_BadCertificateInvalid;
}
}
OpcUa_GotoErrorIfBad(uStatus);
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_REQUIRE_CHAIN_CERTIFICATE_IN_TRUST_LIST)
{
FILE* pCertificateFile;
X509* pTrustCert;
STACK_OF(X509)* chain;
int trusted, n;
chain = X509_STORE_CTX_get_chain(verify_ctx);
trusted = 0;
if(pCertificateStoreCfg->CertificateTrustListLocation == NULL || pCertificateStoreCfg->CertificateTrustListLocation[0] == '\0')
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
numCertificates = scandir(pCertificateStoreCfg->CertificateTrustListLocation, &dirlist, certificate_filter_der, alphasort);
for (i=0; i<numCertificates; i++)
{
uStatus = OpcUa_P_OpenSSL_BuildFullPath(pCertificateStoreCfg->CertificateTrustListLocation, dirlist[i]->d_name, MAX_PATH, CertFile);
OpcUa_GotoErrorIfBad(uStatus);
/* read DER certificates */
pCertificateFile = fopen(CertFile, "r");
if(pCertificateFile == OpcUa_Null)
{
continue; /* ignore access errors */
}
pTrustCert = d2i_X509_fp(pCertificateFile, (X509**)OpcUa_Null);
fclose(pCertificateFile);
if(pTrustCert == OpcUa_Null)
{
continue; /* ignore parse errors */
}
for(n = 0; n < sk_X509_num(chain); n++)
{
if (X509_cmp(sk_X509_value(chain, n), pTrustCert) == 0)
break;
}
X509_free(pTrustCert);
if(n < sk_X509_num(chain))
{
trusted = 1;
break;
}
}
for (i=0; i<numCertificates; i++)
{
free(dirlist[i]);
}
free(dirlist);
dirlist = NULL;
if(!trusted)
{
uStatus = OpcUa_BadCertificateUntrusted;
OpcUa_GotoErrorIfBad(uStatus);
}
}
X509_STORE_CTX_free(verify_ctx);
X509_free(pX509Certificate);
if(pX509Chain != OpcUa_Null)
{
sk_X509_pop_free(pX509Chain, X509_free);
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(dirlist != NULL)
{
for (i=0; i<numCertificates; i++)
{
free(dirlist[i]);
}
free(dirlist);
}
if(verify_ctx != OpcUa_Null)
{
X509_STORE_CTX_free(verify_ctx);
}
if(pX509Certificate != OpcUa_Null)
{
X509_free(pX509Certificate);
}
if(pX509Chain != OpcUa_Null)
{
sk_X509_pop_free(pX509Chain, X509_free);
}
OpcUa_FinishErrorHandling;
}
/*
ToDo: Create Access to OpenSSL certificate store
=> Only API to In-Memory-Store is available for version 0.9.8x
=> Wait until Directory- and/or File-Store is available
*/
OpcUa_StatusCode OpcUa_P_OpenSSL_PKI_LoadCertificate(
OpcUa_PKIProvider* a_pProvider,
OpcUa_Void* a_pLoadHandle,
OpcUa_Void* a_pCertificateStore,
OpcUa_ByteString* a_pCertificate)
{
OpcUa_Byte* buf = OpcUa_Null;
OpcUa_Byte* p = OpcUa_Null;
FILE* pCertificateFile = OpcUa_Null;
X509* pTmpCert = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "PKI_LoadCertificate");
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider->Handle);
OpcUa_ReturnErrorIfArgumentNull(a_pLoadHandle);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificateStore);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate);
/* read DER certificates */
pCertificateFile = fopen((const char*)a_pLoadHandle, "r");
/* check for valid file handle */
OpcUa_GotoErrorIfTrue((pCertificateFile == OpcUa_Null), OpcUa_BadInvalidArgument);
if(!(pTmpCert = d2i_X509_fp(pCertificateFile, (X509**)OpcUa_Null)))
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
a_pCertificate->Length = i2d_X509(pTmpCert, NULL);
buf = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(buf);
p = buf;
for (;;)
{
i2d_X509(pTmpCert, &p);
X509_free(pTmpCert);
if(!(pTmpCert = d2i_X509_fp(pCertificateFile, (X509**)OpcUa_Null)))
{
break;
}
p = OpcUa_P_Memory_ReAlloc(buf, a_pCertificate->Length + i2d_X509(pTmpCert, NULL));
OpcUa_GotoErrorIfAllocFailed(p);
buf = p;
p = buf + a_pCertificate->Length;
a_pCertificate->Length += i2d_X509(pTmpCert, NULL);
}
if(fclose(pCertificateFile) != 0)
{
pCertificateFile = OpcUa_Null;
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
a_pCertificate->Data = buf;
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pCertificateFile != OpcUa_Null)
{
fclose(pCertificateFile);
}
if(pTmpCert != OpcUa_Null)
{
X509_free(pTmpCert);
}
if(buf != OpcUa_Null)
{
OpcUa_P_Memory_Free(buf);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_TcpSecureChannel_GetCurrentSecuritySet
*===========================================================================*/
OpcUa_StatusCode OpcUa_TcpSecureChannel_GetCurrentSecuritySet( OpcUa_SecureChannel* a_pSecureChannel,
OpcUa_UInt32* a_puTokenId,
OpcUa_SecurityKeyset** a_ppReceivingKeyset,
OpcUa_SecurityKeyset** a_ppSendingKeyset,
OpcUa_CryptoProvider** a_ppCryptoProvider)
{
OpcUa_InitializeStatus(OpcUa_Module_SecureChannel, "GetCurrentSecuritySet");
OpcUa_ReturnErrorIfArgumentNull(a_pSecureChannel);
OPCUA_SECURECHANNEL_LOCK(a_pSecureChannel);
if(a_pSecureChannel->bCurrentTokenActive != OpcUa_False)
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_DEBUG, "GetCurrentSecuritySet: Current Keysets requested. Returned token id is %u\n", a_pSecureChannel->CurrentChannelSecurityToken.TokenId);
if(a_puTokenId != OpcUa_Null)
{
*a_puTokenId = a_pSecureChannel->CurrentChannelSecurityToken.TokenId;
}
if(a_ppReceivingKeyset != OpcUa_Null)
{
*a_ppReceivingKeyset = a_pSecureChannel->pCurrentReceivingKeyset;
}
if(a_ppSendingKeyset != OpcUa_Null)
{
*a_ppSendingKeyset = a_pSecureChannel->pCurrentSendingKeyset;
}
if(a_ppCryptoProvider != OpcUa_Null)
{
*a_ppCryptoProvider = a_pSecureChannel->pCurrentCryptoProvider;
}
}
else
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_DEBUG, "GetCurrentSecuritySet: Current Keysets requested. Inactive. Returned token id is %u\n", a_pSecureChannel->PreviousChannelSecurityToken.TokenId);
if(a_puTokenId != OpcUa_Null)
{
*a_puTokenId = a_pSecureChannel->PreviousChannelSecurityToken.TokenId;
}
if(a_ppReceivingKeyset != OpcUa_Null)
{
*a_ppReceivingKeyset = a_pSecureChannel->pPreviousReceivingKeyset;
}
if(a_ppSendingKeyset != OpcUa_Null)
{
*a_ppSendingKeyset = a_pSecureChannel->pPreviousSendingKeyset;
}
if(a_ppCryptoProvider != OpcUa_Null)
{
*a_ppCryptoProvider = a_pSecureChannel->pPreviousCryptoProvider;
}
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_X509_SelfSigned_Custom_Create
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_X509_SelfSigned_Custom_Create(
OpcUa_CryptoProvider* a_pProvider,
OpcUa_Int32 a_serialNumber,
OpcUa_UInt32 a_validToInSec,
OpcUa_Crypto_NameEntry* a_pNameEntries, /* will be used for issuer and subject thus it's selfigned cert */
OpcUa_UInt a_nameEntriesCount, /* will be used for issuer and subject thus it's selfigned cert */
OpcUa_Key a_pSubjectPublicKey, /* EVP_PKEY* - type defines also public key algorithm */
OpcUa_Crypto_Extension* a_pExtensions,
OpcUa_UInt a_extensionsCount,
OpcUa_UInt a_signatureHashAlgorithm, /* EVP_sha1(),... */
OpcUa_Key a_pIssuerPrivateKey, /* EVP_PKEY* - type defines also signature algorithm */
OpcUa_ByteString* a_pCertificate)
{
OpcUa_UInt i;
X509_NAME* pSubj = OpcUa_Null;
X509V3_CTX ctx;
const EVP_MD* pDigest = OpcUa_Null;
X509* pCert = OpcUa_Null;
EVP_PKEY* pSubjectPublicKey = OpcUa_Null;
EVP_PKEY* pIssuerPrivateKey = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "X509_SelfSigned_Custom_Create");
OpcUa_ReferenceParameter(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pNameEntries);
OpcUa_ReturnErrorIfArgumentNull(a_pExtensions);
OpcUa_ReturnErrorIfArgumentNull(a_pIssuerPrivateKey.Key.Data);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate);
if(a_pSubjectPublicKey.Type != OpcUa_Crypto_KeyType_Rsa_Public)
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoErrorIfBad(uStatus);
}
if(a_pIssuerPrivateKey.Type != OpcUa_Crypto_KeyType_Rsa_Private)
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoErrorIfBad(uStatus);
}
pSubjectPublicKey = d2i_PublicKey(EVP_PKEY_RSA,OpcUa_Null,((const unsigned char**)&(a_pSubjectPublicKey.Key.Data)),a_pSubjectPublicKey.Key.Length);
if(pSubjectPublicKey == OpcUa_Null)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
pIssuerPrivateKey = d2i_PrivateKey(EVP_PKEY_RSA,OpcUa_Null,((const unsigned char**)&(a_pIssuerPrivateKey.Key.Data)),a_pIssuerPrivateKey.Key.Length);
if(pIssuerPrivateKey == OpcUa_Null)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* create new certificate object */
pCert = X509_new();
if(pCert == OpcUa_Null)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* set version of certificate (V3 since internal representation starts versioning from 0) */
if(X509_set_version(pCert, 2L) != 1)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* generate a unique number for a serial number if none provided. */
if(a_serialNumber == 0)
{
ASN1_INTEGER* pSerialNumber = X509_get_serialNumber(pCert);
pSerialNumber->type = V_ASN1_INTEGER;
pSerialNumber->data = OPENSSL_realloc(pSerialNumber->data, 16);
pSerialNumber->length = 16;
if(pSerialNumber->data == NULL || OpcUa_P_Guid_Create((OpcUa_Guid*)pSerialNumber->data) == NULL)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
}
/* use the integer passed in - note the API should not be using a 32-bit integer - must fix sometime */
else if(ASN1_INTEGER_set(X509_get_serialNumber(pCert), a_serialNumber) == 0)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* add key to the request */
if(X509_set_pubkey(pCert, pSubjectPublicKey) != 1)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
if(pSubjectPublicKey != OpcUa_Null)
{
EVP_PKEY_free(pSubjectPublicKey);
pSubjectPublicKey = OpcUa_Null;
}
/* assign the subject name */
pSubj = X509_NAME_new();
if(!pSubj)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* create and add entries to subject name */
for(i=0; i<a_nameEntriesCount; i++)
{
uStatus = OpcUa_P_OpenSSL_X509_Name_AddEntry(&pSubj, a_pNameEntries + i);
OpcUa_GotoErrorIfBad(uStatus);
}
/* set subject name in request */
if(X509_set_subject_name(pCert, pSubj) != 1)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* set name of issuer (CA) */
if(X509_set_issuer_name(pCert, pSubj) != 1)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
if(!(X509_gmtime_adj(X509_get_notBefore(pCert), 0)))
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* set ending time of the certificate */
if(!(X509_gmtime_adj(X509_get_notAfter(pCert), a_validToInSec)))
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
/* add x509v3 extensions */
X509V3_set_ctx(&ctx, pCert, pCert, OpcUa_Null, OpcUa_Null, 0);
for(i=0; i<a_extensionsCount; i++)
{
uStatus = OpcUa_P_OpenSSL_X509_AddCustomExtension(&pCert, a_pExtensions+i, &ctx);
OpcUa_GotoErrorIfBad(uStatus);
}
/* sign certificate with the CA private key */
switch(a_signatureHashAlgorithm)
{
case OPCUA_P_SHA_160:
pDigest = EVP_sha1();
break;
case OPCUA_P_SHA_224:
pDigest = EVP_sha224();
break;
case OPCUA_P_SHA_256:
pDigest = EVP_sha256();
break;
case OPCUA_P_SHA_384:
pDigest = EVP_sha384();
break;
case OPCUA_P_SHA_512:
pDigest = EVP_sha512();
break;
default:
uStatus = OpcUa_BadNotSupported;
OpcUa_GotoErrorIfBad(uStatus);
}
if(!(X509_sign(pCert, pIssuerPrivateKey, pDigest)))
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
if(X509_verify(pCert, pIssuerPrivateKey) <= 0)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
if(pIssuerPrivateKey != OpcUa_Null)
{
EVP_PKEY_free(pIssuerPrivateKey);
pIssuerPrivateKey = OpcUa_Null;
}
if(pSubj != OpcUa_Null)
{
X509_NAME_free(pSubj);
pSubj = OpcUa_Null;
}
/* prepare container */
memset(a_pCertificate, 0, sizeof(OpcUa_ByteString));
/* get required length for conversion target buffer */
a_pCertificate->Length = i2d_X509(pCert, NULL);
if(a_pCertificate->Length <= 0)
{
/* conversion to DER not possible */
uStatus = OpcUa_Bad;
}
/* allocate conversion target buffer */
a_pCertificate->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(a_pCertificate->Data);
/* convert into DER */
a_pCertificate->Length = i2d_X509(pCert, &(a_pCertificate->Data));
if(a_pCertificate->Length <= 0)
{
/* conversion to DER not possible */
uStatus = OpcUa_Bad;
}
else
{
/* correct pointer incrementation by i2d_X509() */
a_pCertificate->Data -= a_pCertificate->Length;
}
X509_free(pCert);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
X509_free(pCert);
if(pSubjectPublicKey != OpcUa_Null)
{
EVP_PKEY_free(pSubjectPublicKey);
}
if(pIssuerPrivateKey != OpcUa_Null)
{
EVP_PKEY_free(pIssuerPrivateKey);
}
if(pSubj != OpcUa_Null)
{
X509_NAME_free(pSubj);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_SecureChannel_Renew
*===========================================================================*/
OpcUa_StatusCode OpcUa_TcpSecureChannel_Renew( OpcUa_SecureChannel* a_pSecureChannel,
OpcUa_Handle a_hTransportConnection,
OpcUa_ChannelSecurityToken a_ChannelSecurityToken,
OpcUa_MessageSecurityMode a_eMessageSecurityMode,
OpcUa_ByteString* a_pbsClientCertificate,
OpcUa_ByteString* a_pbsServerCertificate,
OpcUa_SecurityKeyset* a_pNewReceivingKeyset,
OpcUa_SecurityKeyset* a_pNewSendingKeyset,
OpcUa_CryptoProvider* a_pNewCryptoProvider)
{
OpcUa_InitializeStatus(OpcUa_Module_SecureChannel, "Renew");
OpcUa_ReturnErrorIfArgumentNull(a_pSecureChannel);
OpcUa_ReturnErrorIfArgumentNull(a_hTransportConnection);
OpcUa_ReturnErrorIfArgumentNull(a_pNewCryptoProvider);
OPCUA_SECURECHANNEL_LOCK(a_pSecureChannel);
OpcUa_Trace(OPCUA_TRACE_LEVEL_INFO, "OpcUa_TcpSecureChannel_Renew: New token id for channel %u is %u\n", a_pSecureChannel->SecureChannelId, a_ChannelSecurityToken.TokenId);
if(a_pSecureChannel->TransportConnection != a_hTransportConnection)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadSecureChannelIdInvalid);
}
if(a_pSecureChannel->SecureChannelId != a_ChannelSecurityToken.ChannelId)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadSecureChannelIdInvalid);
}
/*** TCP SECURECHANNEL ***/
/* Previous objects will be overwritten by current objects */
a_pSecureChannel->bCurrentTokenActive = OpcUa_False;
/* set channelSecurityToken members */
a_pSecureChannel->PreviousChannelSecurityToken.ChannelId = a_pSecureChannel->CurrentChannelSecurityToken.ChannelId;
a_pSecureChannel->PreviousChannelSecurityToken.TokenId = a_pSecureChannel->CurrentChannelSecurityToken.TokenId;
a_pSecureChannel->PreviousChannelSecurityToken.CreatedAt = a_pSecureChannel->CurrentChannelSecurityToken.CreatedAt;
a_pSecureChannel->PreviousChannelSecurityToken.RevisedLifetime = a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime;
/* set current channelSecurityToken */
a_pSecureChannel->CurrentChannelSecurityToken.ChannelId = a_ChannelSecurityToken.ChannelId;
a_pSecureChannel->CurrentChannelSecurityToken.TokenId = a_ChannelSecurityToken.TokenId;
a_pSecureChannel->CurrentChannelSecurityToken.CreatedAt = a_ChannelSecurityToken.CreatedAt;
a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime = a_ChannelSecurityToken.RevisedLifetime;
/*** SECURECHANNEL ***/
a_pSecureChannel->State = OpcUa_SecureChannelState_Opened;
a_pSecureChannel->MessageSecurityMode = a_eMessageSecurityMode;
a_pSecureChannel->uExpirationCounter = (OpcUa_UInt32)(a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime/OPCUA_SECURELISTENER_WATCHDOG_INTERVAL);
a_pSecureChannel->uOverlapCounter = (OpcUa_UInt32)((a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime>>2)/OPCUA_SECURELISTENER_WATCHDOG_INTERVAL);
/* free old certificate and add new one */
OpcUa_ByteString_Clear(&a_pSecureChannel->ClientCertificate);
/* copy client certificate!!! */
if(a_pbsClientCertificate != OpcUa_Null && a_pbsClientCertificate->Length > 0)
{
a_pSecureChannel->ClientCertificate.Data = (OpcUa_Byte*)OpcUa_Alloc(a_pbsClientCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(a_pSecureChannel->ClientCertificate.Data);
a_pSecureChannel->ClientCertificate.Length = a_pbsClientCertificate->Length;
OpcUa_MemCpy( a_pSecureChannel->ClientCertificate.Data,
a_pSecureChannel->ClientCertificate.Length,
a_pbsClientCertificate->Data,
a_pbsClientCertificate->Length);
}
/* free old certificate and add new one */
OpcUa_ByteString_Clear(&a_pSecureChannel->ServerCertificate);
if(a_pbsServerCertificate != OpcUa_Null && a_pbsServerCertificate->Length > 0)
{
a_pSecureChannel->ServerCertificate.Data = (OpcUa_Byte*)OpcUa_Alloc(a_pbsServerCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(a_pSecureChannel->ServerCertificate.Data);
a_pSecureChannel->ServerCertificate.Length = a_pbsServerCertificate->Length;
OpcUa_MemCpy( a_pSecureChannel->ServerCertificate.Data,
a_pSecureChannel->ServerCertificate.Length,
a_pbsServerCertificate->Data,
a_pbsServerCertificate->Length);
}
/* delete previous keysets */
OpcUa_SecurityKeyset_Clear(a_pSecureChannel->pPreviousReceivingKeyset);
OpcUa_SecurityKeyset_Clear(a_pSecureChannel->pPreviousSendingKeyset);
OpcUa_Free(a_pSecureChannel->pPreviousReceivingKeyset);
OpcUa_Free(a_pSecureChannel->pPreviousSendingKeyset);
a_pSecureChannel->pPreviousReceivingKeyset = OpcUa_Null;
a_pSecureChannel->pPreviousSendingKeyset = OpcUa_Null;
/* assign current to previous */
a_pSecureChannel->pPreviousReceivingKeyset = a_pSecureChannel->pCurrentReceivingKeyset;
a_pSecureChannel->pPreviousSendingKeyset = a_pSecureChannel->pCurrentSendingKeyset;
/* delete previous cryptoprovider */
if( a_pSecureChannel->pPreviousCryptoProvider != OpcUa_Null
&& a_pSecureChannel->pPreviousCryptoProvider != a_pSecureChannel->pCurrentCryptoProvider)
{
OPCUA_P_CRYPTOFACTORY_DELETECRYPTOPROVIDER(a_pSecureChannel->pPreviousCryptoProvider);
OpcUa_Free(a_pSecureChannel->pPreviousCryptoProvider);
a_pSecureChannel->pPreviousCryptoProvider = OpcUa_Null;
}
else
{
a_pSecureChannel->pPreviousCryptoProvider = OpcUa_Null;
}
/* make current cryptoprovider previous */
a_pSecureChannel->pPreviousCryptoProvider = a_pSecureChannel->pCurrentCryptoProvider;
a_pSecureChannel->pCurrentCryptoProvider = a_pNewCryptoProvider;
a_pSecureChannel->pCurrentReceivingKeyset = a_pNewReceivingKeyset;
a_pSecureChannel->pCurrentSendingKeyset = a_pNewSendingKeyset;
OPCUA_SECURECHANNEL_UNLOCK(a_pSecureChannel);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_SecurityKeyset_Clear(a_pNewReceivingKeyset);
OpcUa_SecurityKeyset_Clear(a_pNewSendingKeyset);
OpcUa_Free(a_pNewReceivingKeyset);
OpcUa_Free(a_pNewSendingKeyset);
OPCUA_SECURECHANNEL_UNLOCK(a_pSecureChannel);
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_TcpSecureChannel_Clear
*===========================================================================*/
OpcUa_StatusCode OpcUa_TcpSecureChannel_Clear(OpcUa_SecureChannel* a_pSecureChannel)
{
OpcUa_InitializeStatus(OpcUa_Module_SecureChannel, "Clear");
OpcUa_ReturnErrorIfArgumentNull(a_pSecureChannel);
OpcUa_ReturnErrorIfArgumentNull(a_pSecureChannel->Handle);
OpcUa_String_Clear(&a_pSecureChannel->SecurityPolicyUri);
OpcUa_String_Clear(&a_pSecureChannel->sPeerInfo);
OpcUa_Free(a_pSecureChannel->Handle);
a_pSecureChannel->Handle = OpcUa_Null;
OpcUa_ByteString_Clear(&a_pSecureChannel->ClientCertificate);
OpcUa_ByteString_Clear(&a_pSecureChannel->ServerCertificate);
if(a_pSecureChannel->pCurrentReceivingKeyset != OpcUa_Null)
{
OpcUa_SecurityKeyset_Clear(a_pSecureChannel->pCurrentReceivingKeyset);
OpcUa_Free(a_pSecureChannel->pCurrentReceivingKeyset);
a_pSecureChannel->pCurrentReceivingKeyset = OpcUa_Null;
}
if(a_pSecureChannel->pCurrentSendingKeyset != OpcUa_Null)
{
OpcUa_SecurityKeyset_Clear(a_pSecureChannel->pCurrentSendingKeyset);
OpcUa_Free(a_pSecureChannel->pCurrentSendingKeyset);
a_pSecureChannel->pCurrentSendingKeyset = OpcUa_Null;
}
if(a_pSecureChannel->pPreviousReceivingKeyset != OpcUa_Null)
{
OpcUa_SecurityKeyset_Clear(a_pSecureChannel->pPreviousReceivingKeyset);
OpcUa_Free(a_pSecureChannel->pPreviousReceivingKeyset);
a_pSecureChannel->pPreviousReceivingKeyset = OpcUa_Null;
}
if(a_pSecureChannel->pPreviousSendingKeyset != OpcUa_Null)
{
OpcUa_SecurityKeyset_Clear(a_pSecureChannel->pPreviousSendingKeyset);
OpcUa_Free(a_pSecureChannel->pPreviousSendingKeyset);
a_pSecureChannel->pPreviousSendingKeyset = OpcUa_Null;
}
/* delete both crypto providers */
if(a_pSecureChannel->pCurrentCryptoProvider != OpcUa_Null)
{
if(a_pSecureChannel->pPreviousCryptoProvider == a_pSecureChannel->pCurrentCryptoProvider)
{
/* prevent double deletion */
a_pSecureChannel->pPreviousCryptoProvider = OpcUa_Null;
}
OPCUA_P_CRYPTOFACTORY_DELETECRYPTOPROVIDER(a_pSecureChannel->pCurrentCryptoProvider);
OpcUa_Free(a_pSecureChannel->pCurrentCryptoProvider);
a_pSecureChannel->pCurrentCryptoProvider = OpcUa_Null;
}
if(a_pSecureChannel->pPreviousCryptoProvider != OpcUa_Null)
{
OPCUA_P_CRYPTOFACTORY_DELETECRYPTOPROVIDER(a_pSecureChannel->pPreviousCryptoProvider);
OpcUa_Free(a_pSecureChannel->pPreviousCryptoProvider);
a_pSecureChannel->pPreviousCryptoProvider = OpcUa_Null;
}
if(a_pSecureChannel->pPendingSecureIStream != OpcUa_Null)
{
OpcUa_Stream_Close((OpcUa_Stream*)(a_pSecureChannel->pPendingSecureIStream));
OpcUa_Stream_Delete((OpcUa_Stream**)&(a_pSecureChannel->pPendingSecureIStream));
}
while(a_pSecureChannel->pPendingSendBuffers != OpcUa_Null)
{
OpcUa_BufferList* pCurrentBuffer = a_pSecureChannel->pPendingSendBuffers;
a_pSecureChannel->pPendingSendBuffers = pCurrentBuffer->pNext;
OpcUa_Buffer_Clear(&pCurrentBuffer->Buffer);
OpcUa_Free(pCurrentBuffer);
}
if(a_pSecureChannel->hSyncAccess != OpcUa_Null)
{
OPCUA_P_MUTEX_DELETE(&(a_pSecureChannel->hSyncAccess));
a_pSecureChannel->hSyncAccess = OpcUa_Null;
}
if(a_pSecureChannel->hWriteMutex != OpcUa_Null)
{
OPCUA_P_MUTEX_DELETE(&(a_pSecureChannel->hWriteMutex));
a_pSecureChannel->hWriteMutex = OpcUa_Null;
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_SecureChannel_Open
*===========================================================================*/
OpcUa_StatusCode OpcUa_TcpSecureChannel_Open( OpcUa_SecureChannel* a_pSecureChannel,
OpcUa_Handle a_hTransportConnection,
OpcUa_ChannelSecurityToken a_channelSecurityToken,
OpcUa_MessageSecurityMode a_messageSecurityMode,
OpcUa_ByteString* a_pbsClientCertificate,
OpcUa_ByteString* a_pbsServerCertificate,
OpcUa_SecurityKeyset* a_pReceivingKeyset,
OpcUa_SecurityKeyset* a_pSendingKeyset,
OpcUa_CryptoProvider* a_pCryptoProvider)
{
OpcUa_InitializeStatus(OpcUa_Module_SecureChannel, "Open");
OpcUa_ReturnErrorIfArgumentNull(a_pSecureChannel);
OpcUa_ReturnErrorIfArgumentNull(a_hTransportConnection);
OpcUa_ReturnErrorIfArgumentNull(a_pCryptoProvider);
OPCUA_SECURECHANNEL_LOCK(a_pSecureChannel);
if(a_pSecureChannel->SecureChannelId != a_channelSecurityToken.ChannelId)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadSecureChannelIdInvalid);
}
a_pSecureChannel->bCurrentTokenActive = OpcUa_True;
/*** TCP SECURECHANNEL ***/
a_pSecureChannel->CurrentChannelSecurityToken.ChannelId = a_channelSecurityToken.ChannelId;
a_pSecureChannel->CurrentChannelSecurityToken.TokenId = a_channelSecurityToken.TokenId;
a_pSecureChannel->CurrentChannelSecurityToken.CreatedAt = a_channelSecurityToken.CreatedAt;
a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime = a_channelSecurityToken.RevisedLifetime;
/*** SECURECHANNEL ***/
a_pSecureChannel->State = OpcUa_SecureChannelState_Opened;
a_pSecureChannel->TransportConnection = a_hTransportConnection;
a_pSecureChannel->MessageSecurityMode = a_messageSecurityMode;
a_pSecureChannel->uExpirationCounter = (OpcUa_UInt32)(a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime/OPCUA_SECURELISTENER_WATCHDOG_INTERVAL);
a_pSecureChannel->uOverlapCounter = (OpcUa_UInt32)((a_pSecureChannel->CurrentChannelSecurityToken.RevisedLifetime>>2)/OPCUA_SECURELISTENER_WATCHDOG_INTERVAL);
/* copy client certificate */
if(a_pbsClientCertificate != OpcUa_Null && a_pbsClientCertificate->Length > 0)
{
a_pSecureChannel->ClientCertificate.Data = (OpcUa_Byte *)OpcUa_Alloc(a_pbsClientCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(a_pSecureChannel->ClientCertificate.Data);
a_pSecureChannel->ClientCertificate.Length = a_pbsClientCertificate->Length;
OpcUa_MemCpy( a_pSecureChannel->ClientCertificate.Data,
a_pSecureChannel->ClientCertificate.Length,
a_pbsClientCertificate->Data,
a_pbsClientCertificate->Length);
}
else
{
OpcUa_ByteString_Initialize(&a_pSecureChannel->ClientCertificate);
}
if(a_pbsServerCertificate != OpcUa_Null && a_pbsServerCertificate->Length > 0)
{
a_pSecureChannel->ServerCertificate.Data = (OpcUa_Byte*)OpcUa_Alloc(a_pbsServerCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(a_pSecureChannel->ServerCertificate.Data);
a_pSecureChannel->ServerCertificate.Length = a_pbsServerCertificate->Length;
OpcUa_MemCpy( a_pSecureChannel->ServerCertificate.Data,
a_pSecureChannel->ServerCertificate.Length,
a_pbsServerCertificate->Data,
a_pbsServerCertificate->Length);
}
else
{
OpcUa_ByteString_Initialize(&a_pSecureChannel->ServerCertificate);
}
a_pSecureChannel->pCurrentReceivingKeyset = a_pReceivingKeyset;
a_pSecureChannel->pCurrentSendingKeyset = a_pSendingKeyset;
a_pSecureChannel->pCurrentCryptoProvider = a_pCryptoProvider;
OPCUA_SECURECHANNEL_UNLOCK(a_pSecureChannel);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_SecurityKeyset_Clear(a_pReceivingKeyset);
OpcUa_SecurityKeyset_Clear(a_pSendingKeyset);
OpcUa_Free(a_pReceivingKeyset);
OpcUa_Free(a_pSendingKeyset);
OPCUA_SECURECHANNEL_UNLOCK(a_pSecureChannel);
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_TcpSecureChannel_GetSecuritySet
*===========================================================================*/
OpcUa_StatusCode OpcUa_TcpSecureChannel_GetSecuritySet( OpcUa_SecureChannel* a_pSecureChannel,
OpcUa_UInt32 a_uTokenId,
OpcUa_SecurityKeyset** a_ppReceivingKeyset,
OpcUa_SecurityKeyset** a_ppSendingKeyset,
OpcUa_CryptoProvider** a_ppCryptoProvider)
{
OpcUa_InitializeStatus(OpcUa_Module_SecureChannel, "GetSecuritySet");
OpcUa_ReturnErrorIfArgumentNull(a_pSecureChannel);
OpcUa_Trace(OPCUA_TRACE_LEVEL_DEBUG, "GetSecurityKeyset: Keysets for token id %u requested.\n", a_uTokenId);
OPCUA_SECURECHANNEL_LOCK(a_pSecureChannel);
if(a_pSecureChannel->CurrentChannelSecurityToken.TokenId == a_uTokenId)
{
/* immediately activate the new keyset */
a_pSecureChannel->bCurrentTokenActive = OpcUa_True;
if(a_ppReceivingKeyset != OpcUa_Null)
{
*a_ppReceivingKeyset = a_pSecureChannel->pCurrentReceivingKeyset;
}
if(a_ppSendingKeyset != OpcUa_Null)
{
*a_ppSendingKeyset = a_pSecureChannel->pCurrentSendingKeyset;
}
if(a_ppCryptoProvider != OpcUa_Null)
{
*a_ppCryptoProvider = a_pSecureChannel->pCurrentCryptoProvider;
}
}
else if(a_pSecureChannel->PreviousChannelSecurityToken.TokenId == a_uTokenId)
{
if(a_ppReceivingKeyset != OpcUa_Null)
{
*a_ppReceivingKeyset = a_pSecureChannel->pPreviousReceivingKeyset;
}
if(a_ppSendingKeyset != OpcUa_Null)
{
*a_ppSendingKeyset = a_pSecureChannel->pPreviousSendingKeyset;
}
if(a_ppCryptoProvider != OpcUa_Null)
{
*a_ppCryptoProvider = a_pSecureChannel->pPreviousCryptoProvider;
}
}
else
{
uStatus = OpcUa_BadSecureChannelTokenUnknown;
OpcUa_Trace(OPCUA_TRACE_LEVEL_ERROR, "GetSecurityKeyset: Token id %u at secure channel %u invalid!\n", a_uTokenId, a_pSecureChannel->SecureChannelId);
OPCUA_SECURECHANNEL_UNLOCK(a_pSecureChannel);
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_ParseUrl
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_ParseUrl( OpcUa_StringA a_psUrl,
OpcUa_StringA* a_psIpAddress,
OpcUa_UInt16* a_puPort)
{
OpcUa_StringA sHostName = OpcUa_Null;
OpcUa_UInt32 uHostNameLength = 0;
OpcUa_CharA* sPort = OpcUa_Null;
OpcUa_CharA* pcCursor;
OpcUa_Int nIndex1 = 0;
OpcUa_Int nIpStart;
struct addrinfo* pAddrInfo = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_Utilities, "P_ParseUrl");
OpcUa_ReturnErrorIfArgumentNull(a_psUrl);
OpcUa_ReturnErrorIfArgumentNull(a_psIpAddress);
OpcUa_ReturnErrorIfArgumentNull(a_puPort);
*a_psIpAddress = OpcUa_Null;
/* check for // (end of protocol header) */
pcCursor = strstr(a_psUrl, "//");
if(pcCursor != OpcUa_Null)
{
/* begin of host address */
pcCursor += 2;
nIndex1 = (OpcUa_Int)(pcCursor - a_psUrl);
}
/* skip protocol prefix and store beginning of ip adress */
nIpStart = nIndex1;
/* skip host address (IPv6 address can contain colons!) */
while(a_psUrl[nIndex1] != '/' && a_psUrl[nIndex1] != 0)
{
if(a_psUrl[nIndex1] == ':')
{
sPort = &a_psUrl[nIndex1 + 1];
uHostNameLength = nIndex1 - nIpStart;
}
/* handle "opc.tcp://[::1]:4880/" */
if(a_psUrl[nIndex1] == ']' && sPort != OpcUa_Null && a_psUrl[nIpStart] == '[')
{
nIpStart++;
uHostNameLength = nIndex1 - nIpStart;
sPort = OpcUa_Null;
if(a_psUrl[nIndex1 + 1] == ':')
{
sPort = &a_psUrl[nIndex1 + 2];
}
break;
}
nIndex1++;
}
if(uHostNameLength == 0)
{
uHostNameLength = nIndex1 - nIpStart;
}
/* scan port */
if(sPort != OpcUa_Null)
{
/* convert port */
*a_puPort = (OpcUa_UInt16)OpcUa_P_CharAToInt(sPort);
}
else
{
/* return default port */
*a_puPort = OPCUA_TCP_DEFAULT_PORT;
}
sHostName = (OpcUa_StringA)OpcUa_P_Memory_Alloc(uHostNameLength + 1);
if(sHostName == NULL)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadOutOfMemory);
}
memcpy(sHostName, &a_psUrl[nIpStart], uHostNameLength);
sHostName[uHostNameLength] = '\0';
if(getaddrinfo(sHostName, NULL, NULL, &pAddrInfo))
{
/* hostname could not be resolved */
pAddrInfo = NULL;
OpcUa_GotoErrorWithStatus(OpcUa_BadHostUnknown);
}
if(pAddrInfo->ai_family == AF_INET)
{
struct sockaddr_in* pAddr = (struct sockaddr_in*)pAddrInfo->ai_addr;
OpcUa_P_Memory_Free(sHostName);
sHostName = OpcUa_P_Memory_Alloc(INET_ADDRSTRLEN);
OpcUa_GotoErrorIfAllocFailed(sHostName);
if(inet_ntop(AF_INET, (void*)&pAddr->sin_addr,
sHostName, INET_ADDRSTRLEN) == NULL)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadInternalError);
}
}
else if(pAddrInfo->ai_family == AF_INET6)
{
struct sockaddr_in6* pAddr = (struct sockaddr_in6*)pAddrInfo->ai_addr;
OpcUa_P_Memory_Free(sHostName);
sHostName = OpcUa_P_Memory_Alloc(INET6_ADDRSTRLEN);
OpcUa_GotoErrorIfAllocFailed(sHostName);
if(inet_ntop(AF_INET6, (void*)&pAddr->sin6_addr,
sHostName, INET6_ADDRSTRLEN) == NULL)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadInternalError);
}
if(pAddr->sin6_scope_id)
{
char *pScopeAddress = OpcUa_P_Memory_Alloc(strlen(sHostName) + 12);
OpcUa_GotoErrorIfAllocFailed(pScopeAddress);
sprintf(pScopeAddress, "%s%%%u", sHostName, pAddr->sin6_scope_id);
OpcUa_P_Memory_Free(sHostName);
sHostName = pScopeAddress;
}
}
else
{
OpcUa_GotoErrorWithStatus(OpcUa_BadInternalError);
}
*a_psIpAddress = sHostName;
freeaddrinfo(pAddrInfo);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(sHostName != OpcUa_Null)
{
OpcUa_P_Memory_Free(sHostName);
}
if(pAddrInfo != NULL)
{
freeaddrinfo(pAddrInfo);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* Create a client socket
*===========================================================================*/
OpcUa_StatusCode OPCUA_DLLCALL OpcUa_P_SocketManager_CreateClient( OpcUa_SocketManager a_hSocketManager,
OpcUa_StringA a_sRemoteAddress,
OpcUa_UInt16 a_uLocalPort,
OpcUa_Socket_EventCallback a_pfnSocketCallBack,
OpcUa_Void* a_pCallbackData,
OpcUa_Socket* a_pSocket)
{
OpcUa_InternalSocket* pNewClientSocket = OpcUa_Null;
OpcUa_InternalSocketManager* pInternalSocketManager = OpcUa_Null;
OpcUa_UInt16 uPort = 0;
OpcUa_StringA sRemoteAdress = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_Socket, "CreateClient");
#if !OPCUA_MULTITHREADED
if(a_hSocketManager == OpcUa_Null)
{
a_hSocketManager = OpcUa_Socket_g_SocketManager;
}
#endif
OpcUa_ReturnErrorIfArgumentNull(a_hSocketManager);
OpcUa_ReturnErrorIfArgumentNull(a_pSocket);
OpcUa_ReturnErrorIfArgumentNull(a_sRemoteAddress);
/* parse address */
uStatus = OpcUa_P_ParseUrl( a_sRemoteAddress,
&sRemoteAdress,
&uPort);
OpcUa_ReturnErrorIfBad(uStatus);
pInternalSocketManager = (OpcUa_InternalSocketManager*)a_hSocketManager;
pNewClientSocket = (OpcUa_InternalSocket*)OpcUa_SocketManager_FindFreeSocket( (OpcUa_SocketManager)pInternalSocketManager,
OpcUa_False);
if (pNewClientSocket == OpcUa_Null)
{
OpcUa_P_Memory_Free(sRemoteAdress);
uStatus = OpcUa_BadMaxConnectionsReached; /* no socket left in the list. */
goto Error;
}
/* Create client socket. */
pNewClientSocket->rawSocket = OpcUa_P_Socket_CreateClient( a_uLocalPort,
uPort,
sRemoteAdress,
&uStatus);
OpcUa_P_Memory_Free(sRemoteAdress);
OpcUa_GotoErrorIfTrue( pNewClientSocket->rawSocket == (OpcUa_RawSocket)OPCUA_P_SOCKET_INVALID,
OpcUa_BadCommunicationError);
pNewClientSocket->pfnEventCallback = a_pfnSocketCallBack;
pNewClientSocket->pvUserData = a_pCallbackData;
pNewClientSocket->Flags.bOwnThread = OpcUa_False;
pNewClientSocket->Flags.EventMask = OPCUA_SOCKET_READ_EVENT
| OPCUA_SOCKET_EXCEPT_EVENT
| OPCUA_SOCKET_CONNECT_EVENT
| OPCUA_SOCKET_TIMEOUT_EVENT;
OPCUA_SOCKET_SETVALID(pNewClientSocket);
/* return the new client socket */
*a_pSocket = pNewClientSocket;
/* break loop to add new socket into eventing */
uStatus = OpcUa_P_SocketManager_InterruptLoop( a_hSocketManager,
OPCUA_SOCKET_RENEWLOOP_EVENT,
OpcUa_False);
OpcUa_GotoErrorIfBad(uStatus);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pNewClientSocket != OpcUa_Null)
{
if(pNewClientSocket->rawSocket != (OpcUa_RawSocket)OPCUA_P_SOCKET_INVALID)
{
OpcUa_P_RawSocket_Close(pNewClientSocket->rawSocket);
pNewClientSocket->rawSocket = (OpcUa_RawSocket)OPCUA_P_SOCKET_INVALID;
}
OPCUA_SOCKET_INVALIDATE(pNewClientSocket);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_X509_LoadFromFile
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_X509_LoadFromFile(
OpcUa_StringA a_fileName,
OpcUa_P_FileFormat a_fileFormat,
OpcUa_StringA a_sPassword, /* optional: just for OpcUa_PKCS12 */
OpcUa_ByteString* a_pCertificate)
{
BIO* pCertFile = OpcUa_Null;
X509* pCertX509 = OpcUa_Null;
PKCS12* pPKCS12Cert = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "X509_LoadFromFile");
/* check filename */
if(OpcUa_P_String_strlen(a_fileName) < 1)
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoErrorIfBad(uStatus);
}
/* import certificate from file by the given encoding type */
pCertFile = BIO_new_file((const char*)a_fileName, "r");
OpcUa_ReturnErrorIfArgumentNull(pCertFile);
switch(a_fileFormat)
{
case OpcUa_Crypto_Encoding_DER:
{
pCertX509 = d2i_X509_bio(pCertFile, /* sourcefile */
(X509**)NULL); /* target (if preallocated) */
break;
}
case OpcUa_Crypto_Encoding_PEM:
{
pCertX509 = PEM_read_bio_X509( pCertFile, /* sourcefile */
(X509**)OpcUa_Null, /* target (if preallocated) */
OpcUa_Null, /* password callback function */
OpcUa_Null); /* passphrase or callback data */
break;
}
case OpcUa_Crypto_Encoding_PKCS12:
{
d2i_PKCS12_bio(pCertFile, &pPKCS12Cert);
PKCS12_parse(pPKCS12Cert, a_sPassword, OpcUa_Null, &pCertX509, OpcUa_Null);
if(pPKCS12Cert != OpcUa_Null)
{
PKCS12_free(pPKCS12Cert);
/*OPENSSL_free(pPKCS12Cert);*/
}
break;
}
default:
{
BIO_free(pCertFile);
return OpcUa_BadNotSupported;
}
}
BIO_free(pCertFile);
pCertFile = OpcUa_Null;
if(pCertX509 == OpcUa_Null)
{
/* error in OpenSSL - maybe certificate file was corrupt */
return OpcUa_Bad;
}
/* prepare container */
memset(a_pCertificate, 0, sizeof(OpcUa_ByteString));
/* get required length for conversion target buffer */
a_pCertificate->Length = i2d_X509( pCertX509,
NULL);
if(a_pCertificate->Length <= 0)
{
/* conversion to DER not possible */
uStatus = OpcUa_Bad;
}
/* allocate conversion target buffer */
a_pCertificate->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pCertificate->Length);
OpcUa_GotoErrorIfAllocFailed(a_pCertificate->Data);
/* convert into DER */
a_pCertificate->Length = i2d_X509( pCertX509,
&(a_pCertificate->Data));
if(a_pCertificate->Length <= 0)
{
/* conversion to DER not possible */
uStatus = OpcUa_Bad;
}
else
{
/* correct pointer incrementation by i2d_X509() */
a_pCertificate->Data -= a_pCertificate->Length;
}
X509_free(pCertX509);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pCertX509 != OpcUa_Null)
{
X509_free(pCertX509);
}
if(pPKCS12Cert != OpcUa_Null)
{
OPENSSL_free(pPKCS12Cert);
}
if(a_pCertificate->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pCertificate->Data);
a_pCertificate->Data = OpcUa_Null;
}
if(pCertFile != OpcUa_Null)
{
BIO_free(pCertFile);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_CertificateStore_Open
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_PKI_OpenCertificateStore(
OpcUa_PKIProvider* a_pProvider,
OpcUa_Void** a_ppCertificateStore) /* type depends on store implementation */
{
OpcUa_P_OpenSSL_CertificateStore_Config* pCertificateStoreCfg;
X509_STORE* pStore;
X509_LOOKUP* pLookup;
char CertFile[MAX_PATH];
struct dirent **dirlist = NULL;
int numCertificates = 0, i;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "PKI_OpenCertificateStore");
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider->Handle);
OpcUa_ReturnErrorIfArgumentNull(a_ppCertificateStore);
*a_ppCertificateStore = OpcUa_Null;
pCertificateStoreCfg = (OpcUa_P_OpenSSL_CertificateStore_Config*)a_pProvider->Handle;
if(!(*a_ppCertificateStore = pStore = X509_STORE_new()))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
X509_STORE_set_verify_cb_func(pStore, OpcUa_P_OpenSSL_CertificateStore_Verify_Callback);
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_USE_DEFAULT_CERT_CRL_LOOKUP_METHOD)
{
if(X509_STORE_set_default_paths(pStore) != 1)
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_STORE_set_default_paths!\n");
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
if(!(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_DONT_ADD_TRUST_LIST_TO_ROOT_CERTIFICATES))
{
if(pCertificateStoreCfg->CertificateTrustListLocation == OpcUa_Null || pCertificateStoreCfg->CertificateTrustListLocation[0] == '\0')
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
/* how to search for certificate & CRLs */
if(!(pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_file())))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
/* how to search for certificate & CRLs */
numCertificates = scandir(pCertificateStoreCfg->CertificateTrustListLocation, &dirlist, certificate_filter_der, alphasort);
for (i=0; i<numCertificates; i++)
{
uStatus = OpcUa_P_OpenSSL_BuildFullPath(pCertificateStoreCfg->CertificateTrustListLocation, dirlist[i]->d_name, MAX_PATH, CertFile);
OpcUa_GotoErrorIfBad(uStatus);
/* add CACertificate lookup */
if(X509_LOOKUP_load_file(pLookup, CertFile, X509_FILETYPE_ASN1) != 1) /*DER encoded*/
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_LOOKUP_load_file: skipping %s\n", CertFile);
}
}
for (i=0; i<numCertificates; i++)
{
free(dirlist[i]);
}
free(dirlist);
dirlist = NULL;
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_ADD_UNTRUSTED_LIST_TO_ROOT_CERTIFICATES)
{
if(pCertificateStoreCfg->CertificateUntrustedListLocation == OpcUa_Null || pCertificateStoreCfg->CertificateUntrustedListLocation[0] == '\0')
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_UNTRUSTED_LIST_IS_INDEX)
{
/* how to search for certificate */
if(!(pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_hash_dir())))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
/* add hash lookup */
if(X509_LOOKUP_add_dir(pLookup, pCertificateStoreCfg->CertificateUntrustedListLocation, X509_FILETYPE_ASN1) != 1) /*DER encoded*/
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_LOOKUP_add_dir!\n");
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
else
{
/* how to search for certificate & CRLs */
if(!(pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_file())))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
numCertificates = scandir(pCertificateStoreCfg->CertificateUntrustedListLocation, &dirlist, certificate_filter_der, alphasort);
for (i=0; i<numCertificates; i++)
{
uStatus = OpcUa_P_OpenSSL_BuildFullPath(pCertificateStoreCfg->CertificateUntrustedListLocation, dirlist[i]->d_name, MAX_PATH, CertFile);
OpcUa_GotoErrorIfBad(uStatus);
/* add CACertificate lookup */
if(X509_LOOKUP_load_file(pLookup, CertFile, X509_FILETYPE_ASN1) != 1) /*DER encoded*/
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_LOOKUP_load_file: skipping %s\n", CertFile);
}
}
for (i=0; i<numCertificates; i++)
{
free(dirlist[i]);
}
free(dirlist);
dirlist = NULL;
}
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_CHECK_REVOCATION_ALL)
{
if(pCertificateStoreCfg->CertificateRevocationListLocation == OpcUa_Null || pCertificateStoreCfg->CertificateRevocationListLocation[0] == '\0')
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_REVOCATION_LIST_IS_INDEX)
{
/* how to search for certificate & CRLs */
if(!(pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_hash_dir())))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
/* add CRL lookup */
if(X509_LOOKUP_add_dir(pLookup, pCertificateStoreCfg->CertificateRevocationListLocation, X509_FILETYPE_PEM) != 1) /*PEM encoded*/
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_LOOKUP_add_dir!\n");
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
else if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_REVOCATION_LIST_IS_CONCATENATED_PEM_FILE)
{
/* how to search for certificate & CRLs */
if(!(pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_file())))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
/* add CRL lookup */
if(X509_load_crl_file(pLookup, pCertificateStoreCfg->CertificateRevocationListLocation, X509_FILETYPE_PEM) != 1) /*PEM encoded*/
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_load_crl_file!\n");
}
}
else
{
/* how to search for certificate & CRLs */
if(!(pLookup = X509_STORE_add_lookup(pStore, X509_LOOKUP_file())))
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
numCertificates = scandir(pCertificateStoreCfg->CertificateRevocationListLocation, &dirlist, certificate_filter_crl, alphasort);
for (i=0; i<numCertificates; i++)
{
uStatus = OpcUa_P_OpenSSL_BuildFullPath(pCertificateStoreCfg->CertificateRevocationListLocation, dirlist[i]->d_name, MAX_PATH, CertFile);
OpcUa_GotoErrorIfBad(uStatus);
if(X509_load_crl_file(pLookup, CertFile, X509_FILETYPE_PEM) != 1) /*PEM encoded*/
{
OpcUa_Trace(OPCUA_TRACE_LEVEL_WARNING, "error at X509_load_crl_file: skipping %s\n", CertFile);
}
}
for (i=0; i<numCertificates; i++)
{
free(dirlist[i]);
}
free(dirlist);
dirlist = NULL;
}
if((pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_CHECK_REVOCATION_ALL) == OPCUA_P_PKI_OPENSSL_CHECK_REVOCATION_ALL)
{
/* set the flags of the store so that CRLs are consulted */
if(X509_STORE_set_flags(pStore, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL) != 1)
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
else if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_CHECK_REVOCATION_ONLY_LEAF)
{
/* set the flags of the store so that CRLs are consulted */
if(X509_STORE_set_flags(pStore, X509_V_FLAG_CRL_CHECK) != 1)
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_CHECK_SELF_SIGNED_SIGNATURE)
{
/* set the flags of the store so that CRLs are consulted */
if(X509_STORE_set_flags(pStore, X509_V_FLAG_CHECK_SS_SIGNATURE) != 1)
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
if(pCertificateStoreCfg->Flags & OPCUA_P_PKI_OPENSSL_ALLOW_PROXY_CERTIFICATES)
{
/* set the flags of the store so that CRLs are consulted */
if(X509_STORE_set_flags(pStore, X509_V_FLAG_ALLOW_PROXY_CERTS) != 1)
{
OpcUa_GotoErrorWithStatus(OpcUa_Bad);
}
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(dirlist != NULL)
{
for (i=0; i<numCertificates; i++)
{
free(dirlist[i]);
}
free(dirlist);
}
if(*a_ppCertificateStore != OpcUa_Null)
{
X509_STORE_free((X509_STORE*)*a_ppCertificateStore);
*a_ppCertificateStore = OpcUa_Null;
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_X509_GetPublicKey
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_X509_GetPublicKey(
OpcUa_CryptoProvider* a_pProvider,
OpcUa_ByteString* a_pCertificate,
OpcUa_StringA a_password, /* this could be optional */
OpcUa_Key* a_pPublicKey)
{
EVP_PKEY* pPublicKey = OpcUa_Null;
RSA* pRsaPublicKey = OpcUa_Null;
X509* pCertificate = OpcUa_Null;
OpcUa_Byte* pBuffer = OpcUa_Null;
BIO* bi;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "X509_GetPublicKey");
OpcUa_ReferenceParameter(a_password);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate->Data);
OpcUa_ReturnErrorIfArgumentNull(a_pPublicKey);
bi = BIO_new(BIO_s_mem());
BIO_write(bi, a_pCertificate->Data, a_pCertificate->Length);
pCertificate = d2i_X509_bio(bi, NULL);
BIO_free(bi);
if(pCertificate == OpcUa_Null)
{
return OpcUa_BadCertificateInvalid;
}
/* get EVP_PKEY from X509 certificate */
pPublicKey = X509_get_pubkey(pCertificate);
if(pPublicKey == OpcUa_Null)
{
X509_free(pCertificate);
return OpcUa_BadCertificateInvalid;
}
/* free X509 certificate, since not needed anymore */
X509_free(pCertificate);
switch(EVP_PKEY_type(pPublicKey->type))
{
case EVP_PKEY_RSA:
/* allocate memory for RSA key */
/* get RSA public key from EVP_PKEY */
pRsaPublicKey = EVP_PKEY_get1_RSA(pPublicKey);
/* allocate memory for DER encoded bytestring */
a_pPublicKey->Key.Length = i2d_RSAPublicKey(pRsaPublicKey, OpcUa_Null);
if(a_pPublicKey->Key.Data == OpcUa_Null)
{
RSA_free(pRsaPublicKey);
pRsaPublicKey = OpcUa_Null;
EVP_PKEY_free(pPublicKey);
pPublicKey = OpcUa_Null;
OpcUa_ReturnStatusCode;
}
/* convert RSA key to DER encoded bytestring */
pBuffer = a_pPublicKey->Key.Data;
a_pPublicKey->Key.Length = i2d_RSAPublicKey(pRsaPublicKey, &pBuffer);
a_pPublicKey->Type = OpcUa_Crypto_KeyType_Rsa_Public;
/* free memory for RSA key */
RSA_free(pRsaPublicKey);
pRsaPublicKey = OpcUa_Null;
break;
case EVP_PKEY_EC:
case EVP_PKEY_DSA:
case EVP_PKEY_DH:
default:
OpcUa_GotoErrorWithStatus(OpcUa_BadNotSupported);
}
/*** clean up ***/
EVP_PKEY_free(pPublicKey);
pPublicKey = OpcUa_Null;
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
EVP_PKEY_free(pPublicKey);
pPublicKey = OpcUa_Null;
OpcUa_FinishErrorHandling;
}
/*
ToDo: Create Access to OpenSSL certificate store
=> Only API to In-Memory-Store is available for version 0.9.8x
=> Wait until Directory- and/or File-Store is available
*/
OpcUa_StatusCode OpcUa_P_OpenSSL_PKI_SaveCertificate(
OpcUa_PKIProvider* a_pProvider,
OpcUa_ByteString* a_pCertificate,
OpcUa_Void* a_pCertificateStore,
OpcUa_Void* a_pSaveHandle) /* Index or number within store/destination filepath */
{
X509* pX509Certificate = OpcUa_Null;
FILE* pCertificateFile = OpcUa_Null;
const unsigned char* p;
OpcUa_UInt32 i;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "PKI_SaveCertificate");
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider->Handle);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate);
OpcUa_ReturnErrorIfArgumentNull(a_pCertificateStore);
OpcUa_ReturnErrorIfArgumentNull(a_pSaveHandle);
/* save DER certificate */
pCertificateFile = fopen((const char*)a_pSaveHandle, "w");
/* check for valid file handle */
OpcUa_GotoErrorIfTrue((pCertificateFile == OpcUa_Null), OpcUa_BadInvalidArgument);
/* convert openssl X509 certificate to DER encoded bytestring certificate */
p = a_pCertificate->Data;
while (p < a_pCertificate->Data + a_pCertificate->Length)
{
if(!(pX509Certificate = d2i_X509((X509**)OpcUa_Null, &p, a_pCertificate->Data + a_pCertificate->Length - p)))
{
fclose(pCertificateFile);
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
i = i2d_X509_fp(pCertificateFile, pX509Certificate);
if(i < 1)
{
fclose(pCertificateFile);
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
X509_free(pX509Certificate);
pX509Certificate = OpcUa_Null;
}
if(fclose(pCertificateFile) != 0)
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if (pX509Certificate != OpcUa_Null)
{
X509_free(pX509Certificate);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_X509_GetPrivateKey
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_X509_GetPrivateKey(
OpcUa_CryptoProvider* a_pProvider,
OpcUa_StringA a_certificateFileName,
OpcUa_StringA a_password, /* this is optional */
OpcUa_Key* a_pPrivateKey)
{
BIO* pCertFile = OpcUa_Null;
PKCS12* pPKCS12Cert = OpcUa_Null;
EVP_PKEY* pPrivateKey = OpcUa_Null;
RSA* pRsaPrivateKey = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "X509_GetPrivateKey");
OpcUa_ReferenceParameter(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_certificateFileName);
OpcUa_ReturnErrorIfArgumentNull(a_pPrivateKey);
/* import certificate from file by the given encoding type */
pCertFile = BIO_new_file((const char*)a_certificateFileName, "r");
OpcUa_ReturnErrorIfArgumentNull(pCertFile);
/* convert certificate file handle to PKCS12 structure */
d2i_PKCS12_bio(pCertFile, &pPKCS12Cert);
/* close certificat file handle */
BIO_free(pCertFile);
if(pPKCS12Cert != OpcUa_Null)
{
/* get the private key from the PKCS12 structure*/
PKCS12_parse(pPKCS12Cert, a_password, &pPrivateKey, OpcUa_Null, OpcUa_Null);
}
else
{
uStatus = OpcUa_Bad;
OpcUa_ReturnStatusCode;
}
if(pPKCS12Cert != OpcUa_Null)
{
PKCS12_free(pPKCS12Cert);
pPKCS12Cert = OpcUa_Null;
}
switch(EVP_PKEY_type(pPrivateKey->type))
{
case EVP_PKEY_RSA:
{
/* convert to intermediary openssl struct */
pRsaPrivateKey = EVP_PKEY_get1_RSA(pPrivateKey);
EVP_PKEY_free(pPrivateKey);
OpcUa_GotoErrorIfNull(pRsaPrivateKey, OpcUa_Bad);
/* get required length */
a_pPrivateKey->Key.Length = i2d_RSAPrivateKey(pRsaPrivateKey, OpcUa_Null);
OpcUa_GotoErrorIfTrue(a_pPrivateKey->Key.Length <= 0, OpcUa_Bad);
if(a_pPrivateKey->Key.Data == OpcUa_Null)
{
OpcUa_ReturnStatusCode;
}
/* do real conversion */
a_pPrivateKey->Key.Length = i2d_RSAPrivateKey( pRsaPrivateKey,
&a_pPrivateKey->Key.Data);
OpcUa_GotoErrorIfTrue(a_pPrivateKey->Key.Length <= 0, OpcUa_Bad);
if(pRsaPrivateKey != OpcUa_Null)
{
RSA_free(pRsaPrivateKey);
pRsaPrivateKey = OpcUa_Null;
}
/* correct buffer pointer */
a_pPrivateKey->Key.Data -= a_pPrivateKey->Key.Length;
a_pPrivateKey->Type = OpcUa_Crypto_KeyType_Rsa_Private;
break;
}
case EVP_PKEY_EC:
case EVP_PKEY_DSA:
case EVP_PKEY_DH:
default:
{
uStatus = OpcUa_BadNotSupported;
OpcUa_GotoErrorIfBad(uStatus);
}
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pRsaPrivateKey != OpcUa_Null)
{
RSA_free(pRsaPrivateKey);
}
if(pPrivateKey != OpcUa_Null)
{
EVP_PKEY_free(pPrivateKey);
}
OpcUa_FinishErrorHandling;
}
/**
@brief Extracts data from a certificate store object.
@param pCertificate [in] The certificate to examine.
@param pIssuer [out, optional] The issuer name of the certificate.
@param pSubject [out, optional] The subject name of the certificate.
@param pSubjectUri [out, optional] The subject's URI of the certificate.
@param pSubjectIP [out, optional] The subject's IP of the certificate.
@param pSubjectDNS [out, optional] The subject's DNS name of the certificate.
@param pCertThumbprint [out, optional] The thumbprint of the certificate.
@param pSubjectHash [out, optional] The hash code of the certificate.
@param pCertRawLength [out, optional] The length of the DER encoded data.
can be smaller than the total length of pCertificate in case of chain certificate or garbage follow.
*/
OpcUa_StatusCode OpcUa_P_OpenSSL_PKI_ExtractCertificateData(
OpcUa_ByteString* a_pCertificate,
OpcUa_ByteString* a_pIssuer,
OpcUa_ByteString* a_pSubject,
OpcUa_ByteString* a_pSubjectUri,
OpcUa_ByteString* a_pSubjectIP,
OpcUa_ByteString* a_pSubjectDNS,
OpcUa_ByteString* a_pCertThumbprint,
OpcUa_UInt32* a_pSubjectHash,
OpcUa_UInt32* a_pCertRawLength)
{
X509* pX509Cert = OpcUa_Null;
char* pName = OpcUa_Null;
GENERAL_NAMES* pNames = OpcUa_Null;
const unsigned char* p;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "PKI_ExtractCertificateData");
OpcUa_ReturnErrorIfArgumentNull(a_pCertificate);
if(a_pIssuer != OpcUa_Null)
{
a_pIssuer->Data = OpcUa_Null;
a_pIssuer->Length = 0;
}
if(a_pSubject != OpcUa_Null)
{
a_pSubject->Data = OpcUa_Null;
a_pSubject->Length = 0;
}
if(a_pSubjectUri != OpcUa_Null)
{
a_pSubjectUri->Data = OpcUa_Null;
a_pSubjectUri->Length = 0;
}
if(a_pSubjectIP != OpcUa_Null)
{
a_pSubjectIP->Data = OpcUa_Null;
a_pSubjectIP->Length = 0;
}
if(a_pSubjectDNS != OpcUa_Null)
{
a_pSubjectDNS->Data = OpcUa_Null;
a_pSubjectDNS->Length = 0;
}
if(a_pCertThumbprint != OpcUa_Null)
{
a_pCertThumbprint->Data = OpcUa_Null;
a_pCertThumbprint->Length = 0;
}
if(a_pSubjectHash != OpcUa_Null)
{
*a_pSubjectHash = 0;
}
if(a_pCertRawLength != OpcUa_Null)
{
*a_pCertRawLength = 0;
}
/* convert openssl X509 certificate to DER encoded bytestring certificate */
p = a_pCertificate->Data;
if(!(pX509Cert = d2i_X509((X509**)OpcUa_Null, &p, a_pCertificate->Length)))
{
uStatus = OpcUa_Bad;
OpcUa_GotoErrorIfBad(uStatus);
}
if(a_pIssuer != OpcUa_Null)
{
pName = X509_NAME_oneline(X509_get_issuer_name(pX509Cert), NULL, 0);
OpcUa_GotoErrorIfAllocFailed(pName);
a_pIssuer->Length = strlen(pName)+1;
a_pIssuer->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pIssuer->Length*sizeof(OpcUa_Byte));
OpcUa_GotoErrorIfAllocFailed(a_pIssuer->Data);
uStatus = OpcUa_P_Memory_MemCpy(a_pIssuer->Data, a_pIssuer->Length, pName, a_pIssuer->Length);
OpcUa_GotoErrorIfBad(uStatus);
OPENSSL_free(pName);
pName = OpcUa_Null;
}
if(a_pSubject != OpcUa_Null)
{
pName = X509_NAME_oneline(X509_get_subject_name(pX509Cert), NULL, 0);
OpcUa_GotoErrorIfAllocFailed(pName);
a_pSubject->Length = strlen(pName)+1;
a_pSubject->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pSubject->Length*sizeof(OpcUa_Byte));
OpcUa_GotoErrorIfAllocFailed(a_pSubject->Data);
uStatus = OpcUa_P_Memory_MemCpy(a_pSubject->Data, a_pSubject->Length, pName, a_pSubject->Length);
OpcUa_GotoErrorIfBad(uStatus);
OPENSSL_free(pName);
pName = OpcUa_Null;
}
if(a_pSubjectUri != OpcUa_Null || a_pSubjectIP != OpcUa_Null || a_pSubjectDNS != OpcUa_Null)
{
pNames = X509_get_ext_d2i(pX509Cert, NID_subject_alt_name, OpcUa_Null, OpcUa_Null);
if (pNames != OpcUa_Null)
{
int num;
for (num = 0; num < sk_GENERAL_NAME_num(pNames); num++)
{
GENERAL_NAME *value = sk_GENERAL_NAME_value(pNames, num);
switch (value->type)
{
case GEN_URI:
if (a_pSubjectUri != OpcUa_Null && a_pSubjectUri->Data == OpcUa_Null)
{
a_pSubjectUri->Length = value->d.ia5->length+1;
a_pSubjectUri->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pSubjectUri->Length*sizeof(OpcUa_Byte));
OpcUa_GotoErrorIfAllocFailed(a_pSubjectUri->Data);
uStatus = OpcUa_P_Memory_MemCpy(a_pSubjectUri->Data, a_pSubjectUri->Length, value->d.ia5->data, a_pSubjectUri->Length);
OpcUa_GotoErrorIfBad(uStatus);
}
break;
case GEN_IPADD:
if (a_pSubjectIP != OpcUa_Null && a_pSubjectIP->Data == OpcUa_Null)
{
a_pSubjectIP->Length = value->d.ip->length;
a_pSubjectIP->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pSubjectIP->Length*sizeof(OpcUa_Byte));
OpcUa_GotoErrorIfAllocFailed(a_pSubjectIP->Data);
uStatus = OpcUa_P_Memory_MemCpy(a_pSubjectIP->Data, a_pSubjectIP->Length, value->d.ip->data, a_pSubjectIP->Length);
OpcUa_GotoErrorIfBad(uStatus);
}
break;
case GEN_DNS:
if (a_pSubjectDNS != OpcUa_Null && a_pSubjectDNS->Data == OpcUa_Null)
{
a_pSubjectDNS->Length = value->d.ia5->length+1;
a_pSubjectDNS->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pSubjectDNS->Length*sizeof(OpcUa_Byte));
OpcUa_GotoErrorIfAllocFailed(a_pSubjectDNS->Data);
uStatus = OpcUa_P_Memory_MemCpy(a_pSubjectDNS->Data, a_pSubjectDNS->Length, value->d.ia5->data, a_pSubjectDNS->Length);
OpcUa_GotoErrorIfBad(uStatus);
}
break;
}
}
sk_GENERAL_NAME_pop_free(pNames, GENERAL_NAME_free);
pNames = OpcUa_Null;
}
}
if(a_pCertThumbprint != OpcUa_Null)
{
/* update pX509Cert->sha1_hash */
X509_check_purpose(pX509Cert, -1, 0);
a_pCertThumbprint->Length = sizeof(pX509Cert->sha1_hash);
a_pCertThumbprint->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pCertThumbprint->Length*sizeof(OpcUa_Byte));
OpcUa_GotoErrorIfAllocFailed(a_pCertThumbprint->Data);
uStatus = OpcUa_P_Memory_MemCpy(a_pCertThumbprint->Data, a_pCertThumbprint->Length, pX509Cert->sha1_hash, a_pCertThumbprint->Length);
OpcUa_GotoErrorIfBad(uStatus);
}
if(a_pSubjectHash != OpcUa_Null)
{
*a_pSubjectHash = X509_NAME_hash(X509_get_subject_name(pX509Cert));
}
if(a_pCertRawLength != OpcUa_Null)
{
*a_pCertRawLength = (OpcUa_UInt32)(p - a_pCertificate->Data);
}
X509_free(pX509Cert);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(a_pIssuer != OpcUa_Null && a_pIssuer->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pIssuer->Data);
a_pIssuer->Data = OpcUa_Null;
a_pIssuer->Length = 0;
}
if(a_pSubject != OpcUa_Null && a_pSubject->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pSubject->Data);
a_pSubject->Data = OpcUa_Null;
a_pSubject->Length = 0;
}
if(a_pSubjectUri != OpcUa_Null && a_pSubjectUri->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pSubjectUri->Data);
a_pSubjectUri->Data = OpcUa_Null;
a_pSubjectUri->Length = 0;
}
if(a_pSubjectIP != OpcUa_Null && a_pSubjectIP->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pSubjectIP->Data);
a_pSubjectIP->Data = OpcUa_Null;
a_pSubjectIP->Length = 0;
}
if(a_pSubjectDNS != OpcUa_Null && a_pSubjectDNS->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pSubjectDNS->Data);
a_pSubjectDNS->Data = OpcUa_Null;
a_pSubjectDNS->Length = 0;
}
if(a_pCertThumbprint != OpcUa_Null && a_pCertThumbprint->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pCertThumbprint->Data);
a_pCertThumbprint->Data = OpcUa_Null;
a_pCertThumbprint->Length = 0;
}
if (pName != OpcUa_Null)
{
OPENSSL_free(pName);
}
if (pNames != OpcUa_Null)
{
sk_GENERAL_NAME_pop_free(pNames, GENERAL_NAME_free);
}
if(pX509Cert != OpcUa_Null)
{
X509_free(pX509Cert);
}
OpcUa_FinishErrorHandling;
}
OpcUa_StatusCode fill_Variant_for_value_attribute(_VariableKnoten_* p_Node, OpcUa_String* p_Index, OpcUa_DataValue* p_Results)
{
OpcUa_Int i;
OpcUa_StatusCode uStatus = OpcUa_Good;
extern my_Variant all_ValueAttribute_of_VariableTypeNodes_VariableNodes[];
OpcUa_ReturnErrorIfArgumentNull(p_Node);
/*OpcUa_ReturnErrorIfArgumentNull(p_Index);*/
OpcUa_ReturnErrorIfArgumentNull(p_Results);
if(p_Node->ValueIndex == (-1))
{
OpcUa_GotoErrorWithStatus(OpcUa_BadNotReadable)
}
if(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].ArrayType==OpcUa_VariantArrayType_Scalar)
{
switch(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Datatype)
{
case OpcUaId_Double:
{
p_Results->Value.Value.Double=all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Double;
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_Double, OpcUa_VariantArrayType_Scalar,0);
break;
}
case OpcUaId_DateTime:
{
p_Results->Value.Value.DateTime=all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.DateTime;
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_DateTime, OpcUa_VariantArrayType_Scalar,0);
break;
}
case OpcUaId_String:
{
uStatus= OpcUa_String_AttachCopy(&(p_Results->Value.Value.String),all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.String);
OpcUa_GotoErrorIfBad(uStatus)
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_String, OpcUa_VariantArrayType_Scalar,0);
break;
}
case OpcUaId_UInt32:
{
p_Results->Value.Value.UInt32=all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.UInt32;
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_UInt32, OpcUa_VariantArrayType_Scalar,0);
break;
}
case OpcUaId_Boolean:
{
p_Results->Value.Value.Boolean=all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Boolean;
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
break;
}
}
}
if(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].ArrayType==OpcUa_VariantArrayType_Array)
{
switch(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Datatype)
{
case OpcUaId_Double:
{
p_Results->Value.Value.Array.Value.DoubleArray=OpcUa_Memory_Alloc((all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_Double));
OpcUa_GotoErrorIfAllocFailed((p_Results->Value.Value.Array.Value.DoubleArray))
OpcUa_MemCpy((p_Results->Value.Value.Array.Value.DoubleArray),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_Double),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Value.DoubleArray),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_Double));
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_Double, OpcUa_VariantArrayType_Array,all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length);
break;
}
case OpcUaId_String:
{
p_Results->Value.Value.Array.Value.StringArray=OpcUa_Memory_Alloc((all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_String));
OpcUa_GotoErrorIfAllocFailed((p_Results->Value.Value.Array.Value.DoubleArray))
for(i=0;i<(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length);i++)
{
uStatus= OpcUa_String_AttachCopy((p_Results->Value.Value.Array.Value.StringArray)+i,*(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Value.StringArray+i));
if(OpcUa_IsBad(uStatus))
OpcUa_GotoError
}
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_String, OpcUa_VariantArrayType_Array,all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length);
break;
}
case OpcUaId_UInt32:
{
p_Results->Value.Value.Array.Value.UInt32Array=OpcUa_Memory_Alloc((all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_UInt32));
OpcUa_GotoErrorIfAllocFailed((p_Results->Value.Value.Array.Value.UInt32Array))
OpcUa_MemCpy((p_Results->Value.Value.Array.Value.UInt32Array),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_UInt32),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Value.UInt32Array),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_UInt32));
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_UInt32, OpcUa_VariantArrayType_Array,all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length);
break;
}
case OpcUaId_Boolean:
{
p_Results->Value.Value.Array.Value.BooleanArray=OpcUa_Memory_Alloc((all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_Boolean));
OpcUa_GotoErrorIfAllocFailed((p_Results->Value.Value.Array.Value.BooleanArray))
OpcUa_MemCpy((p_Results->Value.Value.Array.Value.BooleanArray),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_Boolean),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Value.BooleanArray),(all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length)*sizeof(OpcUa_Boolean));
fill_datatype_arraytype_in_my_Variant(p_Results,OpcUaId_UInt32, OpcUa_VariantArrayType_Array,all_ValueAttribute_of_VariableTypeNodes_VariableNodes[p_Node->ValueIndex].Value.Array.Length);
break;
}
}
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
p_Results->StatusCode=uStatus;
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_ParseUrl
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_ParseUrl( OpcUa_StringA a_psUrl,
OpcUa_StringA* a_psIpAdress,
OpcUa_UInt16* a_puPort)
{
OpcUa_UInt32 uUrlLength = 0;
OpcUa_StringA sHostName = OpcUa_Null;
OpcUa_UInt32 uHostNameLength = 0;
OpcUa_CharA* pcCursor = OpcUa_Null;
OpcUa_Int nIndex1 = 0;
OpcUa_Int nIpStart = 0;
struct hostent* pHostEnt = OpcUa_Null;
OpcUa_InitializeStatus(OpcUa_Module_Utilities, "P_ParseUrl");
OpcUa_ReturnErrorIfArgumentNull(a_psUrl);
OpcUa_ReturnErrorIfArgumentNull(a_psIpAdress);
OpcUa_ReturnErrorIfArgumentNull(a_puPort);
*a_psIpAdress = OpcUa_Null;
uUrlLength = (OpcUa_UInt32)strlen(a_psUrl);
/* check for // (end of protocol header) */
pcCursor = strstr(a_psUrl, "//");
if(pcCursor != OpcUa_Null)
{
/* begin of host address */
pcCursor += 2;
nIndex1 = (OpcUa_Int)(pcCursor - a_psUrl);
}
else
{
uStatus = OpcUa_BadSyntaxError;
OpcUa_ReturnStatusCode;
}
/* skip protocol prefix and store beginning of ip adress */
nIpStart = nIndex1;
/* skip host address */
while( a_psUrl[nIndex1] != ':'
&& a_psUrl[nIndex1] != '/'
&& a_psUrl[nIndex1] != 0
&& nIndex1 < (OpcUa_Int32)uUrlLength)
{
nIndex1++;
}
uHostNameLength = nIndex1 - nIpStart;
sHostName = (OpcUa_StringA)malloc(uHostNameLength + 1);
if(sHostName == NULL)
{
return OpcUa_BadOutOfMemory;
}
memcpy(sHostName, &a_psUrl[nIpStart], uHostNameLength);
sHostName[uHostNameLength] = '\0';
pHostEnt = gethostbyname(sHostName);
free(sHostName);
if(pHostEnt == NULL)
{
/* hostname could not be resolved */
return OpcUa_BadHostUnknown;
}
nIpStart = 0;
*a_psIpAdress = (OpcUa_StringA)OpcUa_P_Memory_Alloc(16);
memset(*a_psIpAdress, 0, 16);
#if OPCUA_USE_SAFE_FUNCTIONS
nIpStart += sprintf_s(&(*a_psIpAdress)[0], 16,"%u", (unsigned char)(*((*pHostEnt).h_addr_list))[0]);
(*a_psIpAdress)[nIpStart++] = '.';
nIpStart += sprintf_s(&(*a_psIpAdress)[nIpStart], 12,"%u", (unsigned char)(*((*pHostEnt).h_addr_list))[1]);
(*a_psIpAdress)[nIpStart++] = '.';
nIpStart += sprintf_s(&(*a_psIpAdress)[nIpStart], 8,"%u", (unsigned char)(*((*pHostEnt).h_addr_list))[2]);
(*a_psIpAdress)[nIpStart++] = '.';
nIpStart += sprintf_s(&(*a_psIpAdress)[nIpStart], 4,"%u", (unsigned char)(*((*pHostEnt).h_addr_list))[3]);
#else /* OPCUA_USE_SAFE_FUNCTIONS */
nIpStart += sprintf(&(*a_psIpAdress)[0], "%u", (unsigned char)(*((*pHostEnt).h_addr_list))[0]);
(*a_psIpAdress)[nIpStart++] = '.';
nIpStart += sprintf(&(*a_psIpAdress)[nIpStart], "%u", (unsigned char)(*((*pHostEnt).h_addr_list))[1]);
(*a_psIpAdress)[nIpStart++] = '.';
nIpStart += sprintf(&(*a_psIpAdress)[nIpStart], "%u", (unsigned char)(*((*pHostEnt).h_addr_list))[2]);
(*a_psIpAdress)[nIpStart++] = '.';
nIpStart += sprintf(&(*a_psIpAdress)[nIpStart], "%u", (unsigned char)(*((*pHostEnt).h_addr_list))[3]);
#endif /* OPCUA_USE_SAFE_FUNCTIONS */
/* scan port */
if(a_psUrl[nIndex1] == ':')
{
OpcUa_Int nIndex2 = 0;
OpcUa_CharA* sPort = OpcUa_Null;
OpcUa_CharA sBuffer[MAX_PORT_LENGTH];
/* skip delimiter */
nIndex1++;
/* store beginning of port */
sPort = &a_psUrl[nIndex1];
/* search for end of port */
while( a_psUrl[nIndex1] != '/'
&& a_psUrl[nIndex1] != 0
&& nIndex2 < 6)
{
nIndex1++;
nIndex2++;
}
/* convert port */
OpcUa_P_Memory_MemCpy(sBuffer, MAX_PORT_LENGTH-1, sPort, nIndex2);
sBuffer[nIndex2] = 0;
*a_puPort = (OpcUa_UInt16)OpcUa_P_CharAToInt(sBuffer);
}
else
{
/* return default port */
if (strncmp(a_psUrl, "http:", 5) != 0)
{
*a_puPort = OPCUA_TCP_DEFAULT_PORT;
}
else
{
*a_puPort = OPCUA_HTTP_DEFAULT_PORT;
}
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_FinishErrorHandling;
}
/*============================================================================
* method which implements the Read service.
*===========================================================================*/
OpcUa_StatusCode my_Read(
OpcUa_Endpoint a_hEndpoint,
OpcUa_Handle a_hContext,
const OpcUa_RequestHeader* a_pRequestHeader,
OpcUa_Double a_nMaxAge,
OpcUa_TimestampsToReturn a_eTimestampsToReturn,
OpcUa_Int32 a_nNoOfNodesToRead,
const OpcUa_ReadValueId* a_pNodesToRead,
OpcUa_ResponseHeader* a_pResponseHeader,
OpcUa_Int32* a_pNoOfResults,
OpcUa_DataValue** a_pResults,
OpcUa_Int32* a_pNoOfDiagnosticInfos,
OpcUa_DiagnosticInfo** a_pDiagnosticInfos)
{
OpcUa_Int i,n;
OpcUa_Void* p_Node;
extern OpcUa_UInt32 securechannelId;
extern OpcUa_UInt32 session_flag;
extern OpcUa_Double msec_counter;
extern OpcUa_String* p_user_name;
OpcUa_InitializeStatus(OpcUa_Module_Server, "OpcUa_ServerApi_Read");
/* validate arguments. */
OpcUa_ReturnErrorIfArgumentNull(a_hEndpoint);
OpcUa_ReturnErrorIfArgumentNull(a_hContext);
OpcUa_ReturnErrorIfArgumentNull(a_pRequestHeader);
OpcUa_ReferenceParameter(a_nMaxAge);
OpcUa_ReferenceParameter(a_eTimestampsToReturn);
OpcUa_ReturnErrorIfArrayArgumentNull(a_nNoOfNodesToRead, a_pNodesToRead);
OpcUa_ReturnErrorIfArgumentNull(a_pResponseHeader);
OpcUa_ReturnErrorIfArrayArgumentNull(a_pNoOfResults, a_pResults);
OpcUa_ReturnErrorIfArrayArgumentNull(a_pNoOfDiagnosticInfos, a_pDiagnosticInfos);
*a_pNoOfDiagnosticInfos=0;
*a_pDiagnosticInfos=OpcUa_Null;
RESET_SESSION_COUNTER
#ifndef NO_DEBUGING_
MY_TRACE("\n\n\nRREADSERVICE==============================================\n");
if(p_user_name!=OpcUa_Null)
MY_TRACE("\nUser:%s\n",OpcUa_String_GetRawString(p_user_name));
#endif /*_DEBUGING_*/
if(OpcUa_IsBad(session_flag))
{
//teile client mit , dass Session geschlossen ist
#ifndef NO_DEBUGING_
MY_TRACE("\nSession nicht aktiv\n");
#endif /*_DEBUGING_*/
uStatus=OpcUa_BadSessionNotActivated;
OpcUa_GotoError;
}
uStatus=check_authentication_token(a_pRequestHeader);
if(OpcUa_IsBad(uStatus))
{
#ifndef NO_DEBUGING_
MY_TRACE("\nAuthentication Token ungültig.\n");
#endif /*_DEBUGING_*/
OpcUa_GotoError;
}
*a_pResults=OpcUa_Alloc(a_nNoOfNodesToRead*sizeof(OpcUa_DataValue));
OpcUa_GotoErrorIfAllocFailed((*a_pResults))
for(n=0;n<a_nNoOfNodesToRead;n++)
{
OpcUa_DataValue_Initialize((*a_pResults)+n);
((*a_pResults)+n)->StatusCode=OpcUa_BadAttributeIdInvalid;
p_Node=search_for_node((a_pNodesToRead+n)->NodeId);
if(p_Node!= OpcUa_Null) //pruefe ob Knoten existiert
{
if(((a_pNodesToRead+n)->AttributeId)<=7 && ((a_pNodesToRead+n)->AttributeId)>=1)
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_NodeId)
{
((*a_pResults)+n)->Value.Value.NodeId=OpcUa_Memory_Alloc(sizeof(OpcUa_NodeId));
if(((*a_pResults)+n)->Value.Value.NodeId !=OpcUa_Null)
{
OpcUa_NodeId_Initialize(((*a_pResults)+n)->Value.Value.NodeId);
*(((*a_pResults)+n)->Value.Value.NodeId)=((_ObjectKnoten_*)p_Node)->BaseAttribute.NodeId;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_NodeId, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadOutOfMemory;
}
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_NodeClass)
{
((*a_pResults)+n)->Value.Value.Int32=((_ObjectKnoten_*)p_Node)->BaseAttribute.NodeClass;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Int32, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_BrowseName)
{
((*a_pResults)+n)->Value.Value.QualifiedName=OpcUa_Memory_Alloc(sizeof(OpcUa_QualifiedName));
if(((*a_pResults)+n)->Value.Value.QualifiedName!=OpcUa_Null)
{
OpcUa_QualifiedName_Initialize(((*a_pResults)+n)->Value.Value.QualifiedName);
OpcUa_String_AttachCopy(&((*a_pResults)+n)->Value.Value.QualifiedName->Name,((_ObjectKnoten_*)p_Node)->BaseAttribute.BrowseName);
((*a_pResults)+n)->Value.Value.QualifiedName->NamespaceIndex=((_ObjectKnoten_*)p_Node)->BaseAttribute.NodeId.NamespaceIndex;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_QualifiedName, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadOutOfMemory;
}
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_DisplayName)
{
((*a_pResults)+n)->Value.Value.LocalizedText=OpcUa_Memory_Alloc(sizeof(OpcUa_LocalizedText));
if(((*a_pResults)+n)->Value.Value.LocalizedText!=OpcUa_Null)
{
OpcUa_LocalizedText_Initialize(((*a_pResults)+n)->Value.Value.LocalizedText);
OpcUa_String_AttachCopy(&((*a_pResults)+n)->Value.Value.LocalizedText->Text,((_ObjectKnoten_*)p_Node)->BaseAttribute.DisplayName);
OpcUa_String_AttachCopy(&((*a_pResults)+n)->Value.Value.LocalizedText->Locale,"en");
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_LocalizedText, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadOutOfMemory;
}
}
if(((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_Description || (a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_WriteMask) || (a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_UserWriteMask)
{
((*a_pResults)+n)->StatusCode=OpcUa_BadNotReadable;
}
}
else
{
switch((((_ObjectKnoten_*)p_Node)->BaseAttribute.NodeClass))
{
case OpcUa_NodeClass_Variable:
{
if((a_pNodesToRead+n)->AttributeId<=20 && (a_pNodesToRead+n)->AttributeId>=13)
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_Value)
{
((*a_pResults)+n)->StatusCode=fill_Variant_for_value_attribute((_VariableKnoten_*)p_Node, OpcUa_Null,((*a_pResults)+n));
if(a_eTimestampsToReturn!=OpcUa_TimestampsToReturn_Neither)
{
uStatus=assigne_Timestamp(((*a_pResults)+n),a_eTimestampsToReturn);
if(OpcUa_IsBad(uStatus))
{
((*a_pResults)+n)->StatusCode=OpcUa_BadInternalError;
uStatus=OpcUa_Good;
}
}
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_DataType)
{
((*a_pResults)+n)->Value.Value.NodeId=OpcUa_Memory_Alloc(sizeof(OpcUa_NodeId));
if(((*a_pResults)+n)->Value.Value.NodeId!=OpcUa_Null)
{
OpcUa_NodeId_Initialize(((*a_pResults)+n)->Value.Value.NodeId);
*(((*a_pResults+n)->Value.Value.NodeId))=((_VariableKnoten_*)p_Node)->DataType;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_NodeId, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadOutOfMemory;
}
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_ValueRank)
{
((*a_pResults)+n)->Value.Value.Int32=((_VariableKnoten_*)p_Node)->ValueRank;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Int32, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_ArrayDimensions)
{
((*a_pResults)+n)->Value.Value.UInt32=(((_VariableKnoten_*)p_Node)->ArrayDimensions);
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_UInt32, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_AccessLevel)
{
((*a_pResults)+n)->Value.Value.Byte=((_VariableKnoten_*)p_Node)->AccessLevel;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Byte, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_UserAccessLevel)
{
((*a_pResults)+n)->Value.Value.Byte=((_VariableKnoten_*)p_Node)->UserAccessLevel;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Byte, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_MinimumSamplingInterval)
{
((*a_pResults)+n)->Value.Value.Double=OpcUa_MinimumSamplingIntervals_Indeterminate;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Double, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_Historizing)
{
((*a_pResults)+n)->Value.Value.Boolean=((_VariableKnoten_*)p_Node)->Historizing;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
}
break;
}
case OpcUa_NodeClass_VariableType:
{
if(((a_pNodesToRead+n)->AttributeId<=16 && (a_pNodesToRead+n)->AttributeId>=13) ||((a_pNodesToRead+n)->AttributeId==8))
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_Value)
{
((*a_pResults)+n)->StatusCode=fill_Variant_for_value_attribute((_VariableKnoten_*)p_Node, OpcUa_Null,((*a_pResults)+n));
if(a_eTimestampsToReturn!=OpcUa_TimestampsToReturn_Neither)
{
uStatus=assigne_Timestamp(((*a_pResults)+n),a_eTimestampsToReturn);
if(OpcUa_IsBad(uStatus))
{
((*a_pResults)+n)->StatusCode=OpcUa_BadInternalError;
uStatus=OpcUa_Good;
}
}
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_DataType)
{
((*a_pResults)+n)->Value.Value.NodeId=OpcUa_Memory_Alloc(sizeof(OpcUa_NodeId));
if(((*a_pResults)+n)->Value.Value.NodeId!=OpcUa_Null)
{
OpcUa_NodeId_Initialize(((*a_pResults)+n)->Value.Value.NodeId);
*((*a_pResults)+n)->Value.Value.NodeId=((_VariableTypeKnoten_*)p_Node)->DataType;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_NodeId, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadOutOfMemory;
}
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_ArrayDimensions)
{
((*a_pResults)+n)->Value.Value.UInt32=((_VariableTypeKnoten_*)p_Node)->ArrayDimensions;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_UInt32, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_IsAbstract)
{
((*a_pResults)+n)->Value.Value.Boolean=((_VariableTypeKnoten_*)p_Node)->IsAbstract;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
}
break;
}
case OpcUa_NodeClass_Object:
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_EventNotifier)
{
((*a_pResults)+n)->Value.Value.Byte=((_ObjectKnoten_*)p_Node)->EventNotifier;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Byte, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
break;
}
case OpcUa_NodeClass_ObjectType:
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_IsAbstract)
{
((*a_pResults)+n)->Value.Value.Boolean=((_ObjectTypeKnoten_*)p_Node)->IsAbstract;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
break;
}
case OpcUa_NodeClass_DataType:
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_IsAbstract)
{
((*a_pResults)+n)->Value.Value.Boolean=((_DataTypeKnoten_*)p_Node)->IsAbstract;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
break;
}
case OpcUa_NodeClass_ReferenceType:
{
if((a_pNodesToRead+n)->AttributeId<=10 && (a_pNodesToRead+n)->AttributeId>=8)
{
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_IsAbstract)
{
((*a_pResults)+n)->Value.Value.Boolean=((_ReferenceTypeKnoten_*)p_Node)->IsAbstract;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_Symmetric)
{
((*a_pResults)+n)->Value.Value.Boolean=((_ReferenceTypeKnoten_*)p_Node)->Symmetric;
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_Boolean, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
if((a_pNodesToRead+n)->AttributeId==OpcUa_Attributes_InverseName)
{
((*a_pResults)+n)->Value.Value.LocalizedText=OpcUa_Memory_Alloc(sizeof(OpcUa_LocalizedText));
if(((*a_pResults)+n)->Value.Value.NodeId!=OpcUa_Null)
{
OpcUa_LocalizedText_Initialize(((*a_pResults)+n)->Value.Value.LocalizedText);
OpcUa_String_AttachCopy(&((*a_pResults)+n)->Value.Value.LocalizedText->Text, ((_ReferenceTypeKnoten_*)p_Node)->InverseName_text);
OpcUa_String_AttachCopy(&((*a_pResults)+n)->Value.Value.LocalizedText->Locale, ((_ReferenceTypeKnoten_*)p_Node)->InverseName_locale);
fill_datatype_arraytype_in_my_Variant(((*a_pResults)+n),OpcUaId_LocalizedText, OpcUa_VariantArrayType_Scalar,0);
((*a_pResults)+n)->StatusCode=OpcUa_Good;
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadOutOfMemory;
}
}
}
break;
}
default:
break;
}
}
}
else
{
((*a_pResults)+n)->StatusCode=OpcUa_BadNodeIdUnknown;
}
}
*a_pNoOfResults=a_nNoOfNodesToRead;
#ifndef NO_DEBUGING_
MY_TRACE("\nanzahl der nodes :%d\n",a_nNoOfNodesToRead);
for(i=0;i<a_nNoOfNodesToRead;i++)
{
MY_TRACE("\n|%d|, |%d| attributeId:%u\n",(a_pNodesToRead+i)->NodeId.NamespaceIndex,(a_pNodesToRead+i)->NodeId.Identifier.Numeric,(a_pNodesToRead+i)->AttributeId);
}
#endif /*_DEBUGING_*/
uStatus = response_header_ausfuellen(a_pResponseHeader,a_pRequestHeader,uStatus);
if(OpcUa_IsBad(uStatus))
{
a_pResponseHeader->ServiceResult=OpcUa_BadInternalError;
}
#ifndef NO_DEBUGING_
MY_TRACE("\nSERVICE===ENDE============================================\n\n\n");
#endif /*_DEBUGING_*/
RESET_SESSION_COUNTER
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
uStatus = response_header_ausfuellen(a_pResponseHeader,a_pRequestHeader,uStatus);
if(OpcUa_IsBad(uStatus))
{
a_pResponseHeader->ServiceResult=OpcUa_BadInternalError;
}
#ifndef NO_DEBUGING_
MY_TRACE("\nSERVICEENDE (IM SERVICE SIND FEHLER AUFGETRETTEN)===========\n\n\n");
#endif /*_DEBUGING_*/
RESET_SESSION_COUNTER
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_RSA_LoadPrivateKeyFromFile
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_RSA_LoadPrivateKeyFromFile(
OpcUa_StringA a_privateKeyFile,
OpcUa_P_FileFormat a_fileFormat,
OpcUa_StringA a_password, /* optional: just needed encrypted PEM */
OpcUa_ByteString* a_pPrivateKey)
{
BIO* pPrivateKeyFile = OpcUa_Null;
RSA* pRsaPrivateKey = OpcUa_Null;
EVP_PKEY* pEvpKey = OpcUa_Null;
unsigned char* pData;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "RSA_LoadPrivateKeyFromFile");
/* check parameters */
OpcUa_ReturnErrorIfArgumentNull(a_privateKeyFile);
OpcUa_ReturnErrorIfArgumentNull(a_pPrivateKey);
if(a_fileFormat == OpcUa_Crypto_Encoding_Invalid)
{
return OpcUa_BadInvalidArgument;
}
OpcUa_ReferenceParameter(a_password);
/* open file */
pPrivateKeyFile = BIO_new_file((const char*)a_privateKeyFile, "rb");
OpcUa_ReturnErrorIfArgumentNull(pPrivateKeyFile);
/* read and convert file */
switch(a_fileFormat)
{
case OpcUa_Crypto_Encoding_PEM:
{
/* read from file */
pEvpKey = PEM_read_bio_PrivateKey( pPrivateKeyFile, /* file */
NULL, /* key struct */
0, /* password callback */
a_password); /* default passphrase or arbitrary handle */
OpcUa_GotoErrorIfNull(pEvpKey, OpcUa_Bad);
break;
}
case OpcUa_Crypto_Encoding_PKCS12:
{
int iResult = 0;
/* read from file. */
PKCS12* pPkcs12 = d2i_PKCS12_bio(pPrivateKeyFile, NULL);
if (pPkcs12 == 0)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadEncodingError);
}
/* parse the certificate. */
iResult = PKCS12_parse(pPkcs12, a_password, &pEvpKey, NULL, NULL);
if (iResult == 0)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadEncodingError);
}
/* free certificate. */
PKCS12_free(pPkcs12);
pPkcs12 = NULL;
break;
}
case OpcUa_Crypto_Encoding_DER:
default:
{
uStatus = OpcUa_BadNotSupported;
OpcUa_GotoError;
}
}
/* convert to intermediary openssl struct */
pRsaPrivateKey = EVP_PKEY_get1_RSA(pEvpKey);
EVP_PKEY_free(pEvpKey);
OpcUa_GotoErrorIfNull(pRsaPrivateKey, OpcUa_Bad);
/* get required length */
a_pPrivateKey->Length = i2d_RSAPrivateKey(pRsaPrivateKey, OpcUa_Null);
OpcUa_GotoErrorIfTrue((a_pPrivateKey->Length <= 0), OpcUa_Bad);
/* allocate target buffer */
a_pPrivateKey->Data = (OpcUa_Byte*)OpcUa_P_Memory_Alloc(a_pPrivateKey->Length);
OpcUa_GotoErrorIfAllocFailed(a_pPrivateKey->Data);
/* do real conversion */
pData = a_pPrivateKey->Data;
a_pPrivateKey->Length = i2d_RSAPrivateKey(pRsaPrivateKey, &pData);
OpcUa_GotoErrorIfTrue((a_pPrivateKey->Length <= 0), OpcUa_Bad);
RSA_free(pRsaPrivateKey);
BIO_free(pPrivateKeyFile);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pEvpKey)
{
EVP_PKEY_free(pEvpKey);
}
if(a_pPrivateKey != OpcUa_Null)
{
if(a_pPrivateKey->Data != OpcUa_Null)
{
OpcUa_P_Memory_Free(a_pPrivateKey->Data);
a_pPrivateKey->Data = OpcUa_Null;
a_pPrivateKey->Length = -1;
}
}
if(pPrivateKeyFile != NULL)
{
BIO_free(pPrivateKeyFile);
}
if(pRsaPrivateKey != NULL)
{
RSA_free(pRsaPrivateKey);
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_Random_Key_PSHA256_Derive
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_Random_Key_PSHA256_Derive(
OpcUa_CryptoProvider* a_pProvider,
OpcUa_ByteString a_secret, /* clientnonce | servernonce, servernonce | clientnonce */
OpcUa_ByteString a_seed,
OpcUa_Int32 a_keyLen, /* output len */
OpcUa_Key* a_pKey)
{
OpcUa_P_OpenSSL_PSHA256_Ctx*pCtx = OpcUa_Null;
OpcUa_Byte* pBuffer = OpcUa_Null;
OpcUa_Int bufferlength;
OpcUa_Int i;
OpcUa_Int iterations;
OpcUa_CryptoProviderConfig* pConfig = OpcUa_Null;
OpcUa_Int32 keyLen = 0;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "Random_Key_PSHA256_Derive");
OpcUa_ReferenceParameter(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_secret.Data);
OpcUa_ReturnErrorIfArgumentNull(a_seed.Data);
OpcUa_ReturnErrorIfArgumentNull(a_pKey);
keyLen = a_keyLen;
if(keyLen < 0)
{
if(a_pProvider->Handle != OpcUa_Null)
{
/* get default configuration */
pConfig = (OpcUa_CryptoProviderConfig*)a_pProvider->Handle;
keyLen = pConfig->SymmetricKeyLength;
}
else
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoErrorIfBad(uStatus);
}
}
else if(keyLen > MAX_DERIVED_OUTPUT_LEN)
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoErrorIfBad(uStatus);
}
if(a_pKey->Key.Data == OpcUa_Null)
{
a_pKey->Key.Length = keyLen;
OpcUa_ReturnStatusCode;
}
a_pKey->Type = OpcUa_Crypto_KeyType_Random;
/** start creating key **/
pCtx = (OpcUa_P_OpenSSL_PSHA256_Ctx*)OpcUa_Null;
iterations = keyLen/32 + (keyLen%32?1:0);
bufferlength = iterations*32;
pBuffer = (OpcUa_Byte *)OpcUa_P_Memory_Alloc(bufferlength * sizeof(OpcUa_Byte));
pCtx = OpcUa_P_OpenSSL_PSHA256_Context_Create(a_secret.Data, a_secret.Length, a_seed.Data, a_seed.Length);
for(i=0; i<iterations; i++)
{
/* SHA256 produces 32 Bytes of output for every iteration */
uStatus = OpcUa_P_OpenSSL_PSHA256_Hash_Generate(pCtx, pBuffer + (i*32));
OpcUa_GotoErrorIfBad(uStatus);
}
OpcUa_P_Memory_MemCpy(a_pKey->Key.Data, a_pKey->Key.Length, pBuffer, keyLen);
if(pCtx != OpcUa_Null)
{
OpcUa_P_Memory_Free(pCtx);
pCtx = OpcUa_Null;
}
if(pBuffer != OpcUa_Null)
{
OpcUa_P_Memory_Free(pBuffer);
pBuffer = OpcUa_Null;
}
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pCtx != OpcUa_Null)
{
OpcUa_P_Memory_Free(pCtx);
pCtx = OpcUa_Null;
}
if(pBuffer != OpcUa_Null)
{
OpcUa_P_Memory_Free(pBuffer);
pBuffer = OpcUa_Null;
}
OpcUa_FinishErrorHandling;
}
/*============================================================================
* OpcUa_P_OpenSSL_RSA_Private_Decrypt
*===========================================================================*/
OpcUa_StatusCode OpcUa_P_OpenSSL_RSA_Private_Decrypt(
OpcUa_CryptoProvider* a_pProvider,
OpcUa_Byte* a_pCipherText,
OpcUa_UInt32 a_cipherTextLen,
OpcUa_Key* a_privateKey,
OpcUa_Int16 a_padding,
OpcUa_Byte* a_pPlainText,
OpcUa_UInt32* a_pPlainTextLen)
{
EVP_PKEY* pPrivateKey = OpcUa_Null;
OpcUa_UInt32 keySize = 0;
OpcUa_Int32 decryptedBytes = 0;
OpcUa_UInt32 iCipherText = 0;
/* OpcUa_UInt32 iPlainTextLen = 0; */
OpcUa_UInt32 decDataSize = 0;
const char* sError = OpcUa_Null;
const unsigned char *pData;
OpcUa_InitializeStatus(OpcUa_Module_P_OpenSSL, "RSA_Private_Decrypt");
OpcUa_ReferenceParameter(a_pProvider);
OpcUa_ReturnErrorIfArgumentNull(a_pCipherText);
OpcUa_ReturnErrorIfArgumentNull(a_privateKey);
OpcUa_ReturnErrorIfArgumentNull(a_privateKey->Key.Data);
OpcUa_ReturnErrorIfArgumentNull(a_pPlainTextLen);
*a_pPlainTextLen = 0;
if(a_privateKey->Type != OpcUa_Crypto_KeyType_Rsa_Private)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadInvalidArgument);
}
pData = a_privateKey->Key.Data;
pPrivateKey = d2i_PrivateKey(EVP_PKEY_RSA,OpcUa_Null, &pData, a_privateKey->Key.Length);
if (pPrivateKey == OpcUa_Null)
{
long lErr = ERR_get_error();
char *szErr = ERR_error_string(lErr, 0);
OpcUa_ReferenceParameter(szErr);
return OpcUa_BadInvalidArgument;
}
keySize = RSA_size(pPrivateKey->pkey.rsa);
if((a_cipherTextLen%keySize) != 0)
{
uStatus = OpcUa_BadInvalidArgument;
OpcUa_GotoError;
}
/* check padding type */
switch(a_padding)
{
case RSA_PKCS1_PADDING:
{
decDataSize = keySize - 11;
break;
}
case RSA_PKCS1_OAEP_PADDING:
{
decDataSize = keySize - 42;
break;
}
case RSA_NO_PADDING:
{
decDataSize = keySize;
break;
}
default:
{
OpcUa_GotoErrorWithStatus(OpcUa_BadNotSupported);
}
}
while(iCipherText < a_cipherTextLen)
{
if(a_pPlainText != OpcUa_Null)
{
decryptedBytes = RSA_private_decrypt( keySize, /* how much to decrypt */
a_pCipherText + iCipherText, /* what to decrypt */
a_pPlainText + (*a_pPlainTextLen), /* where to decrypt */
pPrivateKey->pkey.rsa, /* private key */
a_padding); /* padding mode */
/* goto error block, if decryption fails */
if(decryptedBytes == -1)
{
/* const char* serror = NULL; */
unsigned long error = ERR_get_error();
ERR_load_crypto_strings();
sError = ERR_reason_error_string(error);
sError = ERR_func_error_string(error);
sError = ERR_lib_error_string(error);
uStatus = OpcUa_Bad;
OpcUa_GotoError;
}
}
else
{
decryptedBytes = decDataSize;
}
*a_pPlainTextLen = *a_pPlainTextLen + decryptedBytes;
iCipherText = iCipherText + keySize;
}
EVP_PKEY_free(pPrivateKey);
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
if(pPrivateKey != OpcUa_Null)
{
EVP_PKEY_free(pPrivateKey);
}
*a_pPlainTextLen = (OpcUa_UInt32)-1;
OpcUa_FinishErrorHandling;
}
static
OpcUa_StatusCode OpcUa_UadpNetworkMessageHeader_WriteBinary(OpcUa_UadpNetworkMessageHeader* a_pValue, OpcUa_Byte **a_pBuffer, OpcUa_UInt32 *a_pSize)
{
OpcUa_Byte uadpVersionFlags;
OpcUa_Byte extendedFlags1;
OpcUa_Byte extendedFlags2;
OpcUa_UadpDeclare_Context;
OpcUa_InitializeStatus(OpcUa_Module_PubSub, "OpcUa_UadpNetworkMessageHeader_WriteBinary");
OpcUa_UadpInit_Context;
OpcUa_ReturnErrorIfArgumentNull(a_pValue);
OpcUa_ReturnErrorIfArgumentNull(a_pBuffer);
OpcUa_ReturnErrorIfArgumentNull(*a_pBuffer);
OpcUa_ReturnErrorIfArgumentNull(a_pSize);
/* assign the configured part of the flag bytes */
uadpVersionFlags = (OpcUa_Byte)a_pValue->NetworkMessageFlags & 0x60; /* Take Byte 0 only */
/* Bit 0-3: UADP Version, Bit 5: GroupHeader enabled, Bit 6: PayloadHeader enabled */
uadpVersionFlags |= OPCUA_UADP_VERSION & 0x0F;
extendedFlags1 = (OpcUa_Byte)((a_pValue->NetworkMessageFlags & 0x7800) >> 8); /* Take Byte 1 only */
/* Bit 3: DataSetClassId enabled, Bit 4: Security enabled, Bit 5: Timestamp enabled, Bit 6: PicoSeconds enabled */
extendedFlags2 = (OpcUa_Byte)((a_pValue->NetworkMessageFlags & 0x1F0000) >> 16); /* Take Byte 2 only */
/* Bit 0: Chunk message, Bit 1: PromotedFields enabled */
/* ExtendedFlags2 Bit 2-4 NetworkMessageType: 000: DataSetMessage, 001: Discovery Request, 010: Discovery Response */
/* calculate the remaining bits */
/* ExtendedFlags1 Bit 0-2 PublisherIdType: */
if(a_pValue->PublisherId.ArrayType != OpcUa_VariantArrayType_Scalar)
{
OpcUa_GotoErrorWithStatus(OpcUa_BadEncodingError);
}
switch(a_pValue->PublisherId.Datatype)
{
case OpcUaType_Byte:
/* 0x0 */
uadpVersionFlags |= 0x10; /* PublisherId enabled */
break;
case OpcUaType_UInt16:
extendedFlags1 |= 0x1;
uadpVersionFlags |= 0x10; /* PublisherId enabled */
break;
case OpcUaType_UInt32:
extendedFlags1 |= 0x2;
uadpVersionFlags |= 0x10; /* PublisherId enabled */
break;
case OpcUaType_UInt64:
extendedFlags1 |= 0x3;
uadpVersionFlags |= 0x10; /* PublisherId enabled */
break;
case OpcUaType_String:
extendedFlags1 |= 0x4;
uadpVersionFlags |= 0x10; /* PublisherId enabled */
break;
case OpcUaType_Null:
/* keep PublisherId disabled */
break;
default:
/* unsupported data type */
OpcUa_GotoErrorWithStatus(OpcUa_BadEncodingError);
break;
}
/* ExtendedFlags1 Bit 7 ExtendedFlags2 enabled: */
if(extendedFlags2)
{
extendedFlags1 |= 0x80;
}
/* UADPFlags Bit 7 ExtendedFlags1 enabled */
if(extendedFlags1)
{
uadpVersionFlags |= 0x80;
}
OpcUa_UadpEncode_Direct(Byte, &uadpVersionFlags);
if(extendedFlags1)
{
OpcUa_UadpEncode_Direct(Byte, &extendedFlags1);
}
if(extendedFlags2)
{
OpcUa_UadpEncode_Direct(Byte, &extendedFlags2);
}
/* cast away the const pointer */
switch(a_pValue->PublisherId.Datatype)
{
case OpcUaType_Byte:
OpcUa_UadpEncode_Direct(Byte, &a_pValue->PublisherId.Value.Byte);
break;
case OpcUaType_UInt16:
OpcUa_UadpEncode_Direct(UInt16, &a_pValue->PublisherId.Value.UInt16);
break;
case OpcUaType_UInt32:
OpcUa_UadpEncode_Direct(UInt32, &a_pValue->PublisherId.Value.UInt32);
break;
case OpcUaType_UInt64:
OpcUa_UadpEncode_Direct(UInt64, &a_pValue->PublisherId.Value.UInt64);
break;
case OpcUaType_String:
OpcUa_UadpEncode_Simple(String, &a_pValue->PublisherId.Value.String);
break;
case OpcUaType_Null:
break;
}
if(a_pValue->NetworkMessageFlags & OpcUa_UadpNetworkMessageFlags_DataSetClassId)
{
OpcUa_UadpEncode_Simple(Guid, &a_pValue->DataSetClassId);
}
OpcUa_UadpClear_Context;
OpcUa_ReturnStatusCode;
OpcUa_BeginErrorHandling;
OpcUa_UadpClear_Context;
OpcUa_FinishErrorHandling;
}
