crypto/weakcryptospi/source/spi/cryptospiutil.cpp
changeset 8 35751d3474b7
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2:675a964f4eb5 8:35751d3474b7
       
     1 /*
       
     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of the License "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description: 
       
    15 * legacy plugin selector implementation
       
    16 * Legacy plugin selector implementation
       
    17 *
       
    18 */
       
    19 
       
    20 
       
    21 /**
       
    22  @file
       
    23 */
       
    24 #include "cryptospiutil.h"
       
    25 #include "cryptospiproperty.h"
       
    26 #include "e32uid.h"
       
    27 #include <cryptospi/cryptospidef.h>
       
    28 #include <e32property.h>
       
    29 #include "rulecharacteristics.h"
       
    30 
       
    31 using namespace CryptoSpi;
       
    32 
       
    33 /**
       
    34 The name of the executable which set up all the crypto spi
       
    35 */
       
    36 _LIT(KCryptoSpiPropertySetupExe, "z:\\sys\\bin\\cryptospisetup.exe");
       
    37 
       
    38 void CryptoSpiUtil::RetrieveCharacteristicsL(TInt32 aInterface, RPointerArray<CCharacteristicsAndPluginName>& aList)
       
    39 	{
       
    40 	RDesReadStream stream;
       
    41 	RBuf8 rBuf;
       
    42 	TInt count=0;
       
    43 	CleanupClosePushL(rBuf);
       
    44 	TInt length=RetrieveCharacteristicsL(aInterface, stream, rBuf, count);
       
    45 	if (length<=4)	
       
    46 		{
       
    47 		CleanupStack::PopAndDestroy(&rBuf);
       
    48 		return;
       
    49 		}
       
    50 		
       
    51 	//internalize the characteristics and dll index
       
    52 	for (TInt i=0;i<count;i++)
       
    53 		{
       
    54 		CCharacteristicsAndPluginName* temp=CCharacteristicsAndPluginName::NewLC(aInterface);
       
    55 		temp->InternalizeL(stream);
       
    56 		aList.AppendL(temp);
       
    57 		CleanupStack::Pop(temp); //temp
       
    58 		}
       
    59 	CleanupStack::PopAndDestroy(&rBuf);
       
    60 	}
       
    61 
       
    62 void CryptoSpiUtil::RetrieveCharacteristicsL(TInt32 aInterface, RPointerArray<CRulesCharacteristicsAndPluginName>& aList)
       
    63 	{
       
    64 	RDesReadStream stream;
       
    65 	RBuf8 rBuf;
       
    66 	TInt count=0;
       
    67 	CleanupClosePushL(rBuf);
       
    68 	TInt length=RetrieveCharacteristicsL(aInterface, stream, rBuf, count);
       
    69 	if (length<=4)	
       
    70 		{
       
    71 		CleanupStack::PopAndDestroy(&rBuf);
       
    72 		return;
       
    73 		}
       
    74 		
       
    75 	//internalize the characteristics and dll index
       
    76 	for (TInt i=0;i<count;i++)
       
    77 		{
       
    78 		CRulesCharacteristicsAndPluginName* temp=CRulesCharacteristicsAndPluginName::NewLC(aInterface);
       
    79 		temp->InternalizeL(stream);
       
    80 		aList.AppendL(temp);
       
    81 		CleanupStack::Pop(temp); //temp
       
    82 		}
       
    83 	CleanupStack::PopAndDestroy(&rBuf);
       
    84 	}
       
    85 
       
    86 TInt CryptoSpiUtil::RetrieveCharacteristicsL(TInt32 aInterface, RDesReadStream& aStream, RBuf8& aBuf, TInt& aCount)
       
    87 	{
       
    88 	TBuf8<KMaxFileName> buf;
       
    89 	TInt testResult = RProperty::Get(KCryptoSpiPropertyCat, aInterface, buf);
       
    90 	if (testResult==KErrNotFound)
       
    91 		{
       
    92 		//run the exe to Publish the properties
       
    93 		RunCryptoSpiPropertySetupExe();
       
    94 		testResult = RProperty::Get(KCryptoSpiPropertyCat, aInterface, buf);
       
    95 		if (testResult==KErrNotFound)
       
    96 			{
       
    97 			//Error
       
    98 			User::Leave(testResult);
       
    99 			}
       
   100 		}
       
   101 	
       
   102 	//Try to read the length first
       
   103 	RDesReadStream rStream(buf);
       
   104 	TInt32 len=rStream.ReadInt32L();
       
   105 	
       
   106 	//If the property is empty
       
   107 	if (len<=4)
       
   108 		{
       
   109 		return len;
       
   110 		}
       
   111 
       
   112 	//Allocate memory 
       
   113 	aBuf.CreateMaxL(len);
       
   114 	User::LeaveIfError(RProperty::Get(KCryptoSpiPropertyCat, aInterface, aBuf));
       
   115 	
       
   116 	//Read the length
       
   117 	aStream.Open(aBuf);
       
   118 	len=aStream.ReadInt32L();
       
   119 	
       
   120 	//Read the count of the characteristics
       
   121 	aCount=aStream.ReadInt16L();
       
   122 	return len;	
       
   123 	}
       
   124 
       
   125 TInt CryptoSpiUtil::DllIndexToName(TInt aDllIndex, TFileName& aName)
       
   126 	{
       
   127 	TInt dllCount=0;
       
   128 	TInt result = RProperty::Get(KCryptoSpiPropertyCat, KPluginsConfigurationKeyCount, dllCount);	
       
   129 	if (result==KErrNotFound)
       
   130 		{
       
   131 		//run the exe to publish the properties
       
   132 		RunCryptoSpiPropertySetupExe();
       
   133 		result = RProperty::Get(KCryptoSpiPropertyCat, KPluginsConfigurationKeyCount, dllCount);
       
   134 		if (result==KErrNotFound)
       
   135 			{
       
   136 			return KErrNotFound;
       
   137 			}
       
   138 		}
       
   139 	if (aDllIndex>=dllCount)
       
   140 		{
       
   141 		return KErrNotFound;
       
   142 		}
       
   143 	
       
   144 	TBuf8<KMaxFileName> buf;
       
   145 	result = RProperty::Get(KCryptoSpiPropertyCat, KPluginsConfigurationKey+aDllIndex, buf);
       
   146 	if (result==KErrNotFound)
       
   147 		{
       
   148 		return KErrNotFound;
       
   149 		}
       
   150 				
       
   151 	RDesReadStream rStream(buf);
       
   152 	rStream>>aName;
       
   153 	return KErrNone;		
       
   154 	}
       
   155 		
       
   156 void CryptoSpiUtil::LoadPluginDllLC(RLibrary& aLib, TFileName& aFileName)
       
   157 	{
       
   158 	User::LeaveIfError(aLib.Load(aFileName));
       
   159 	CleanupClosePushL(aLib);
       
   160 	RLibrary plugin=aLib;
       
   161 	CleanupClosePushL(plugin);
       
   162 	User::LeaveIfError(aLib.Duplicate(RThread(), EOwnerProcess));
       
   163 	CleanupStack::PopAndDestroy(&plugin);		
       
   164 	}
       
   165 
       
   166 TInt CryptoSpiUtil::RunCryptoSpiPropertySetupExe()
       
   167 	{
       
   168 	const TUidType setupExeUidType(KExecutableImageUid, TUid::Null(), KCryptoSpiPropertyCat);
       
   169 	RProcess setupProc;
       
   170 	TInt result = setupProc.Create(KCryptoSpiPropertySetupExe, KNullDesC, setupExeUidType);
       
   171 	if (result != KErrNone)
       
   172 		{
       
   173 		return result;
       
   174 		}
       
   175 	TRequestStatus setupStatus;
       
   176 	// request Rendezvous before Resume() to avoid race condition.
       
   177 	// Also note if request to rendezvous fails (OOM etc.) then setup exe may
       
   178 	// complete after query code, with feature property possibly undefined
       
   179 	setupProc.Rendezvous(setupStatus);
       
   180 	setupProc.Resume();
       
   181 	setupProc.Close();
       
   182 	User::WaitForRequest(setupStatus);
       
   183 	return setupStatus.Int();
       
   184 	}
       
   185 
       
   186 CCharacteristics* CryptoSpiUtil::CreateCharacteristicsL(TInt32 aInterface)
       
   187 	{
       
   188 	CCharacteristics* character=NULL;
       
   189 	switch (aInterface)
       
   190 		{
       
   191 	case KHashInterface:
       
   192 	case KAsyncHashInterface:
       
   193 		character=CHashCharacteristics::NewL();
       
   194 		break;
       
   195 #ifdef SYMBIAN_SDP_IPSEC_VOIP_SUPPORT				
       
   196 	case KMacInterface:
       
   197 	case KAsyncMacInterface:
       
   198 		character=CMacCharacteristics::NewL();
       
   199 		break;
       
   200 #endif		
       
   201 	case KRandomInterface:
       
   202 	case KAsyncRandomInterface:
       
   203 		character=CRandomCharacteristics::NewL();
       
   204 		break;
       
   205 
       
   206 	case KSymmetricCipherInterface:
       
   207 	case KAsyncSymmetricCipherInterface:
       
   208 		character=CSymmetricCipherCharacteristics::NewL();
       
   209 		break;
       
   210 
       
   211 	case KAsymmetricCipherInterface:
       
   212 	case KAsyncAsymmetricCipherInterface:
       
   213 		character=CAsymmetricCipherCharacteristics::NewL();
       
   214 		break;
       
   215 
       
   216 	case KSignerInterface:
       
   217 	case KAsyncSignerInterface:
       
   218 	case KVerifierInterface:
       
   219 	case KAsyncVerifierInterface:
       
   220 		character=CAsymmetricSignatureCharacteristics::NewL();
       
   221 		break;
       
   222 
       
   223 	case KKeyAgreementInterface:
       
   224 	case KAsyncKeyAgreementInterface:
       
   225 		character=CKeyAgreementCharacteristics::NewL();
       
   226 		break;
       
   227 
       
   228 	case KKeypairGeneratorInterface:
       
   229 	case KAsyncKeypairGeneratorInterface:
       
   230 		character=CKeypairGeneratorCharacteristics::NewL();
       
   231 		break;
       
   232 	
       
   233 	default:
       
   234 		User::Leave(KErrNotSupported);
       
   235 		}
       
   236 	return character;
       
   237 	}
       
   238