internal MetadataInfo(InternalMetadataInfo metadataInfo)
{
if (metadataInfo is null)
{
throw new ArgumentNullException(nameof(metadataInfo));
}
IntPtr moduleHandle;
moduleHandle = Marshal.GetHINSTANCE(metadataInfo.Module);
if (!(metadataInfo.TableStream is null))
{
TableStream = new MetadataStreamInfo(metadataInfo.TableStream, moduleHandle);
}
if (!(metadataInfo.StringHeap is null))
{
StringHeap = new MetadataStreamInfo(metadataInfo.StringHeap, moduleHandle);
}
if (!(metadataInfo.UserStringHeap is null))
{
UserStringHeap = new MetadataStreamInfo(metadataInfo.UserStringHeap, moduleHandle);
}
if (!(metadataInfo.GuidHeap is null))
{
GuidHeap = new MetadataStreamInfo(metadataInfo.GuidHeap, moduleHandle);
}
if (!(metadataInfo.BlobHeap is null))
{
BlobHeap = new MetadataStreamInfo(metadataInfo.BlobHeap, moduleHandle);
}
PEInfo = new DotNetPEInfo(metadataInfo.PEInfo, moduleHandle);
}
private static MetadataStreamInfo GetGuidHeap(MetadataInfo metadataInfo)
{
ThrowOnError(metadataInfo.MetaDataTables.GetGuidHeapSize(out uint streamSize));
if (streamSize == 1)
{
return(null);
}
int result = metadataInfo.MetaDataTables.GetGuid(1, out void *pData);
return(result == 0 ? new MetadataStreamInfo {
Address = pData,
Length = AlignUp(streamSize, 4)
} : null);
}
private static MetadataStreamInfo GetBlobHeap(MetadataInfo metadataInfo)
{
ThrowOnError(metadataInfo.MetaDataTables.GetBlobHeapSize(out uint streamSize));
if (streamSize == 1)
{
return(null);
}
int result = metadataInfo.MetaDataTables.GetBlob(1, out uint dataSize, out void *pData);
return(result == 0 ? new MetadataStreamInfo {
Address = (byte *)pData - GetCompressedUInt32Length(dataSize) - 1,
Length = AlignUp(streamSize, 4)
} : null);
}
private static MetadataStreamInfo GetUserStringHeap(MetadataInfo metadataInfo)
{
ThrowOnError(metadataInfo.MetaDataTables.GetUserStringHeapSize(out uint streamSize));
if (streamSize == 1)
{
return(null);
}
int result = metadataInfo.MetaDataTables.GetUserString(1, out uint dataSize, out void *pData);
// #US与#Blob堆传入ixXXX=0都会导致获取到的pData不是真实地址，所以获取第2个数据的地址
return(result == 0 ? new MetadataStreamInfo {
Address = (byte *)pData - GetCompressedUInt32Length(dataSize) - 1,
Length = AlignUp(streamSize, 4)
} : null);
}
private static MetadataStreamInfo GetStringHeap(MetadataInfo metadataInfo)
{
int result;
uint streamSize;
void *pData;
ThrowOnError(metadataInfo.MetaDataTables.GetStringHeapSize(out streamSize));
if (streamSize == 1)
{
// 表示流不存在，1只是用来占位
return(null);
}
result = metadataInfo.MetaDataTables.GetString(0, out pData);
return(result == 0 ? new MetadataStreamInfo {
Address = pData,
Length = AlignUp(streamSize, 4)
} : null);
}
private static MetadataStreamInfo GetTableStream(MetadataInfo metadataInfo)
{
ThrowOnError(metadataInfo.MetaDataTables.GetNumTables(out uint tableCount));
uint tablesSize = 0;
uint validTableCount = 0;
for (uint i = 0; i < tableCount; i++)
{
ThrowOnError(metadataInfo.MetaDataTables.GetTableInfo(i, out uint rowSize, out uint rowCount, out _, out _, out _));
if (rowCount == 0)
{
continue;
}
tablesSize += rowSize * rowCount;
validTableCount++;
}
uint headerSize = 0x18 + (validTableCount * 4);
ThrowOnError(metadataInfo.MetaDataTables.GetRow(0, 1, out void *address));
return(new MetadataStreamInfo {
Address = (byte *)address - headerSize,
Length = AlignUp(headerSize + tablesSize, 4)
});
}