1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 /**

    17  @file getrandomstep.cpp

    18  @internalTechnology

    19 */

    20 #include "getrandomstep.h"

    21 #include <tlsprovinterface.h>

    22 #include <tlstypedef.h>

    23 

    24 _LIT(KEpochDate, "19700000:");

    25 

    26 CGetRandomStep::CGetRandomStep()

    27 	{

    28 	SetTestStepName(KGetRandomStep);

    29 	}

    30 	

    31 TVerdict CGetRandomStep::doTestStepPreambleL()

    32 	{

    33 	ConstructL();

    34 	return EPass;

    35 	}

    36 

    37 TVerdict CGetRandomStep::doTestStepL()

    38 	{

    39 	// Get three buffers of random...

    40 	TBuf8<KTLSServerClientRandomLen> random1;

    41 	TBuf8<KTLSServerClientRandomLen> random2;

    42 	TBuf8<KTLSServerClientRandomLen> random3;

    43 	

    44 	

    45 	INFO_PRINTF1(_L("Invoking TLS Provider - Generate Random"));

    46 	

    47 	Provider()->GenerateRandom(random1);

    48 	Provider()->GenerateRandom(random2);

    49 	Provider()->GenerateRandom(random3);

    50 	

    51 	// check all the buffers are of sane length

    52 	if (random1.Length() != KTLSServerClientRandomLen ||

    53 		random2.Length() != KTLSServerClientRandomLen ||

    54 		random3.Length() != KTLSServerClientRandomLen)

    55 		{

    56 		INFO_PRINTF1(_L("Failed! Not all random buffers are of the required length!"));

    57 		SetTestStepResult(EFail);

    58 		return TestStepResult();

    59 		}

    60 	

    61 	// check the timestamps on the data are all roughly sane....

    62 	

    63 	TTime now;

    64 	now.UniversalTime();

    65 	TTime epoch(KEpochDate);

    66 	

    67 	TUint stamp1 = GetTimestamp(random1);

    68 	TUint stamp2 = GetTimestamp(random2);

    69 	TUint stamp3 = GetTimestamp(random3); 

    70 	

    71 	if (stamp1 > stamp2 || stamp2 > stamp3)

    72 		{

    73 		INFO_PRINTF1(_L("Failed! Timestamps suggest an insane clock!"));

    74 		// uh oh, timestamps are going backwards...

    75 		SetTestStepResult(EFail);

    76 		return TestStepResult();

    77 		}

    78 		

    79 	// check all the time stamps are within a sane interval from "now"

    80 	TTime time1 = epoch + TTimeIntervalSeconds(stamp1);

    81 	TTime time2 = epoch + TTimeIntervalSeconds(stamp2);

    82 	TTime time3 = epoch + TTimeIntervalSeconds(stamp3);

    83 	

    84 	// read the interval from the config file...

    85 	TInt interval(0);

    86 	if (!GetIntFromConfig(ConfigSection(), KMaxTimestampInterval, interval))

    87 		{

    88 		User::Leave(KErrNotFound);

    89 		}

    90 	

    91 	TTimeIntervalSeconds interval1;

    92 	TInt err1 = now.SecondsFrom(time1, interval1);

    93 	TTimeIntervalSeconds interval2;

    94 	TInt err2 = now.SecondsFrom(time2, interval2);

    95 	TTimeIntervalSeconds interval3;

    96 	TInt err3 = now.SecondsFrom(time3, interval3);

    97 	

    98 	if (err1 != KErrNone || err2 != KErrNone || err3 != KErrNone)

    99 		{

   100 		INFO_PRINTF1(_L("Failed! Could not get time intervals from 'now'!"));

   101 		SetTestStepResult(EFail);

   102 		return TestStepResult();

   103 		}

   104 		

   105 	if (interval1.Int() > interval ||

   106 		interval2.Int() > interval ||

   107 		interval3.Int() > interval)

   108 		{

   109 		// Looks like the timestamp algorithm is bad.

   110 		INFO_PRINTF1(_L("Failed! Clock appears to be running far too fast!"));

   111 		SetTestStepResult(EFail);

   112 		return TestStepResult();

   113 		}

   114 		

   115 	// now, check the random portion of the data... 

   116 	// just make sure it isn't all the same string...

   117 	

   118 	TPtrC8 ptr1 = random1.Mid(4);

   119 	TPtrC8 ptr2 = random2.Mid(4);

   120 	TPtrC8 ptr3 = random3.Mid(4);

   121 	

   122 	if (ptr1 == ptr2 || ptr2 == ptr3 || ptr3 == ptr1)

   123 		{

   124 		INFO_PRINTF1(_L("Failed! Random data isn't actually random!"));

   125 		SetTestStepResult(EFail);

   126 		return TestStepResult();

   127 		}

   128 		

   129 	INFO_PRINTF1(_L("Test step passed."));

   130 	SetTestStepResult(EPass);

   131 	return TestStepResult();

   132 	}

   133 	

   134 TUint CGetRandomStep::GetTimestamp(const TDesC8& aRandom)

   135 	{

   136 	TUint ret = aRandom[0];

   137 	for (TInt i = 1; i < 4; ++i)

   138 		{

   139 		ret <<= 8;

   140 		ret += aRandom[i];

   141 		}

   142 	return ret;

   143 	}