public StreamHeaderRef(MemoryMappedViewAccessor accessor)
{
Accessor = accessor;
Buffer = accessor.GetSafeBuffer();
byte *temp = null;
Buffer.AcquirePointer(ref temp);
Ptr = (StreamHeader *)temp;
}
public bool Verify(uint maxSize, out StreamHeader * [] streams)
{
streams = new StreamHeader *[(int)StreamID.NUMBER_OF_STREAMS];
//Validate the magic number.
if (Signature != 0x424A5342) {
return false;
}
//The reserved DWORD should be zero.
if (Reserved != 0) {
return false;
}
if (Length > 256 || (Length % 4) != 0) {
return false;
}
try {
if (checked(Length + MinSize + sizeof(ushort) * 2) > maxSize)
{
return false;
}
}
catch (OverflowException) {
return false;
}
if (!VerifyVersion()) {
return false;
}
if (Flags != 0) {
return false;
}
if (NumberOfStreams < 1 || NumberOfStreams > 5) {
return false;
}
var pStream = FirstStreamHeader;
fixed (MetadataRoot* pThis = &this) {
for (var i = 0; i < NumberOfStreams; ++i) {
if (checked((byte*) pStream - (byte*) pThis > maxSize - StreamHeader.MinSize)) {
return false;
}
uint maxLength;
try {
maxLength = checked(maxSize - StreamHeader.MinSize - 4u - (uint) ((byte*) pStream - (byte*) pThis));
}
catch (OverflowException) {
return false;
}
var streamName = pStream->GetNameAsString(maxLength);
StreamID streamID;
if (! StreamHeader.StreamNames.TryGetValue(streamName, out streamID)) {
return false;
}
if (streams[(int)streamID] != null) {
return false;
}
streams[(int) streamID] = pStream;
try {
pStream = (StreamHeader *)checked((byte*) pStream + 8 + checked((uint)streamName.Length + 1).Pad(4));
}
catch (OverflowException) {
return false;
}
}
}
return true;
}
public StreamHeaderRef(MemoryMappedViewAccessor accessor)
{
Accessor = accessor;
Buffer = accessor.GetSafeBuffer();
byte* temp = null;
Buffer.AcquirePointer(ref temp);
Ptr = (StreamHeader*)temp;
}
public bool Verify(uint maxSize, out StreamHeader * [] streams)
{
streams = new StreamHeader *[(int)StreamID.NUMBER_OF_STREAMS];
//Validate the magic number.
if (Signature != 0x424A5342)
{
return(false);
}
//The reserved DWORD should be zero.
if (Reserved != 0)
{
return(false);
}
if (Length > 256 || (Length % 4) != 0)
{
return(false);
}
try {
if (checked (Length + MinSize + sizeof(ushort) * 2) > maxSize)
{
return(false);
}
}
catch (OverflowException) {
return(false);
}
if (!VerifyVersion())
{
return(false);
}
if (Flags != 0)
{
return(false);
}
if (NumberOfStreams < 1 || NumberOfStreams > 5)
{
return(false);
}
var pStream = FirstStreamHeader;
fixed(MetadataRoot *pThis = &this)
{
for (var i = 0; i < NumberOfStreams; ++i)
{
if (checked ((byte *)pStream - (byte *)pThis > maxSize - StreamHeader.MinSize))
{
return(false);
}
uint maxLength;
try {
maxLength = checked (maxSize - StreamHeader.MinSize - 4u - (uint)((byte *)pStream - (byte *)pThis));
}
catch (OverflowException) {
return(false);
}
var streamName = pStream->GetNameAsString(maxLength);
StreamID streamID;
if (!StreamHeader.StreamNames.TryGetValue(streamName, out streamID))
{
return(false);
}
if (streams[(int)streamID] != null)
{
return(false);
}
streams[(int)streamID] = pStream;
try {
pStream = (StreamHeader *)checked ((byte *)pStream + 8 + checked ((uint)streamName.Length + 1).Pad(4));
}
catch (OverflowException) {
return(false);
}
}
}
return(true);
}
