// -----------------------------------------------------------------------------
// CSdpOriginField::SetAddressL
// Sets address from the buffer
// -----------------------------------------------------------------------------
//
EXPORT_C void CSdpOriginField::SetAddressL(
const TDesC8& aAddress,
RStringF aNetType,
RStringF aAddressType )
{
__TEST_INVARIANT;
__ASSERT_ALWAYS( SdpUtil::IsToken( aNetType.DesC() ) &&
SdpUtil::IsToken( aAddressType.DesC() ) &&
IsValidAddress( aAddress ) &&
TypeMatchesWithFormat( aAddress,
aAddressType.DesC(), iPool ),
User::Leave( KErrSdpCodecOriginField ) );
iAddress = aAddress;
iAddressType.Close();
iAddressType = aAddressType.Copy();
__TEST_INVARIANT;
}
// -----------------------------------------------------------------------------
// CSdpOriginField::SetInetAddress
// Sets Internet Address
// -----------------------------------------------------------------------------
//
EXPORT_C void CSdpOriginField::SetInetAddress(
const TInetAddr& aValue )
{
__TEST_INVARIANT;
if ( IsValidAddress( aValue ) )
{
TBuf<KMaxIPDesLength> buf;
aValue.Output( buf );
// Copy new address to safe
iAddress.Copy( buf );
// Copy network type and address type
SdpUtil::SetDefaultNetTypeAndAddrType(
iPool, aValue, iNetType, iAddressType );
SetIPAddressType( aValue );
}
__TEST_INVARIANT;
}
char * const MemoryManager::CoalesceWithNextBlock(char * const ptr)
{
if (IsNextBlockFree(ptr) && IsValidAddress(GetNextBlock(ptr)))
{
//Remove next block from free blocks
freeBlocks.remove((Node*)GetNextBlock(ptr));
ForwardIteratationOverFreeBlocks();
//Update header
size_t newHeaderData = GetHeader(ptr) + GetHeader(GetNextBlock(ptr));
SetHeader(ptr, newHeaderData);
//Update footer
SetFooter(ptr, newHeaderData);
return ptr;
}
else
{
return ptr;
}
}
// -----------------------------------------------------------------------------
// CSdpConnectionField::SetInetAddressL
// Sets address from TInetAddr
// -----------------------------------------------------------------------------
//
EXPORT_C void CSdpConnectionField::SetInetAddressL(
const TInetAddr& aAddress,
TInt aTTL,
TUint aNumOfAddress )
{
__TEST_INVARIANT;
if ( IsValidAddress( aAddress, aTTL, aNumOfAddress ) == KErrNone )
{
TBuf<KMaxAddressLength> addr16;
//If aAddress IPv4-Mapped IPv6, result of Output IPv4
aAddress.Output( addr16 );
HBufC8* tempBuf = HBufC8::NewL( addr16.Length() );
tempBuf->Des().Copy( addr16 );
SdpUtil::SetDefaultNetTypeAndAddrType(
iPool, aAddress, iNetType, iAddressType );
if(aAddress.Address() && aAddress.IsV4Mapped())
{
iAddressType.Close();
iAddressType = iPool.StringF( SdpCodecStringConstants::EAddressTypeIP4,
SdpCodecStringConstants::Table ).Copy();
}
// Set address
delete iAddress;
iAddress = tempBuf;
// Set attributes for address
iTTL = aTTL;
iNumOfAddress = aNumOfAddress;
}
else
{
User::Leave( KErrSdpCodecConnectionField );
}
__TEST_INVARIANT;
}
const unsigned char* Analysis::TranslateAddress(duint addr)
{
return IsValidAddress(addr) ? _data + (addr - _base) : nullptr;
}
void ControlFlowAnalysis::BasicBlocks()
{
for(auto i = _blockStarts.begin(); i != _blockStarts.end(); ++i)
{
uint start = *i;
if(!IsValidAddress(start))
continue;
uint nextStart = _base + _size;
auto next = std::next(i);
if(next != _blockStarts.end())
nextStart = *next;
for(uint addr = start, prevaddr = 0; addr < _base + _size;)
{
prevaddr = addr;
if(_cp.Disassemble(addr, TranslateAddress(addr), MAX_DISASM_BUFFER))
{
if(_cp.InGroup(CS_GRP_RET) || _cp.GetId() == X86_INS_INT3)
{
insertBlock(BasicBlock(start, addr, 0, 0)); //leaf block
break;
}
else if(_cp.InGroup(CS_GRP_JUMP) || _cp.IsLoop())
{
uint dest1 = GetReferenceOperand();
uint dest2 = _cp.GetId() != X86_INS_JMP ? addr + _cp.Size() : 0;
insertBlock(BasicBlock(start, addr, dest1, dest2));
insertParent(dest1, start);
insertParent(dest2, start);
break;
}
addr += _cp.Size();
}
else
addr++;
if(addr == nextStart) //special case handling overlapping blocks
{
insertBlock(BasicBlock(start, prevaddr, 0, nextStart));
insertParent(nextStart, start);
break;
}
}
}
_blockStarts.clear();
#ifdef _WIN64
int count = 0;
EnumerateFunctionRuntimeEntries64([&](PRUNTIME_FUNCTION Function)
{
const uint funcAddr = _moduleBase + Function->BeginAddress;
const uint funcEnd = _moduleBase + Function->EndAddress;
// If within limits...
if(funcAddr >= _base && funcAddr < _base + _size)
_functionStarts.insert(funcAddr);
count++;
return true;
});
dprintf("%u functions from the exception directory...\n", count);
#endif // _WIN64
dprintf("%u basic blocks, %u function starts detected...\n", _blocks.size(), _functionStarts.size());
}
// -----------------------------------------------------------------------------
// CSdpConnectionField::CopyAddressL
// Copies address after checking that it is valid
// -----------------------------------------------------------------------------
//
void CSdpConnectionField::CopyAddressL(
const TDesC8& aAddress,
RStringPool aPool )
{
RStringF addrTypeIP4 = aPool.StringF(
SdpCodecStringConstants::EAddressTypeIP4,
SdpCodecStringConstants::Table );
RStringF addrTypeIP6 = aPool.StringF(
SdpCodecStringConstants::EAddressType,
SdpCodecStringConstants::Table );
HBufC8* addr = NULL;
if ( iAddressType == addrTypeIP4 || iAddressType == addrTypeIP6 )
{
User::LeaveIfError(
IsValidAddress( iAddressType == addrTypeIP4, aAddress ) );
addr = ParseAddressFieldL( iAddressType == addrTypeIP4, aAddress,
iTTL, iNumOfAddress );
//If address is IPv4-Mapped IPv6 , it is changed to IPv4
TInetAddr inetaddr;
TBuf<KMaxAddressLength> address;
address.Copy(*addr);
TInt err = inetaddr.Input(address);
TBuf16 <KMaxAddressLength> output;
inetaddr.Output(output);
if(!err &&
( ( inetaddr.Address() && inetaddr.IsV4Mapped() ) ||
( inetaddr.IsWildAddr() && output.Match(KWildAddr) != KErrNotFound )
) )
{//IPv4-Mapped IPv6 is changed to IPv4 address
TBuf<KMaxIPDesLength> buf;
inetaddr.Output( buf );
// Copy new address to safe
delete addr;
addr = NULL;
addr = HBufC8::NewL(buf.Length());
addr->Des().Copy(buf);
iAddressType.Close();
iAddressType =
iPool.StringF(SdpCodecStringConstants::EAddressTypeIP4,
SdpCodecStringConstants::Table ).Copy();
}
}
else
{
// Address not IP4 or IP6, must be then non-ws-string
if ( SdpUtil::IsNonWhitespace( aAddress ) )
{
addr = aAddress.AllocL();
}
else
{
User::Leave( KErrSdpCodecConnectionField );
}
}
delete iAddress;
iAddress = addr;
}
size_t MemoryManager::GetHeader(char * const ptr) const
{
if (IsValidAddress(ptr - sizeof(size_t*)))
return *(size_t*)(ptr - sizeof(size_t*));
}
