Function ParseResources

DevIL/src-IL/src/il_psd.cpp:795–855

ILboolean ParseResources(ILuint ResourceSize, ILubyte *Resources)
{
	ILushort	ID;
	ILubyte		NameLen;
	ILuint		Size;

	if (Resources == NULL) {
		ilSetError(IL_INTERNAL_ERROR);
		return IL_FALSE;
	}

	while (ResourceSize > 13) {  // Absolutely has to be larger than this.
		if (strncmp("8BIM", (const char*)Resources, 4)) {
			//return IL_FALSE;
			return IL_TRUE;  // 05-30-2002: May not necessarily mean corrupt data...
		}
		Resources += 4;

		ID = *((ILushort*)Resources);
		BigUShort(&ID);
		Resources += 2;

		NameLen = *Resources++;
		// NameLen + the byte it occupies must be padded to an even number, so NameLen must be odd.
		NameLen = NameLen + (NameLen & 1 ? 0 : 1);
		Resources += NameLen;

		// Get the resource data size.
		Size = *((ILuint*)Resources);
		BigUInt(&Size);
		Resources += 4;

		ResourceSize -= (4 + 2 + 1 + NameLen + 4);

		switch (ID)
		{
			case 0x040F:  // ICC Profile
				if (Size > ResourceSize) {  // Check to make sure we are not going past the end of Resources.
					ilSetError(IL_ILLEGAL_FILE_VALUE);
					return IL_FALSE;
				}
				iCurImage->Profile = (ILubyte*)ialloc(Size);
				if (iCurImage->Profile == NULL) {
					return IL_FALSE;
				}
				memcpy(iCurImage->Profile, Resources, Size);
				iCurImage->ProfileSize = Size;
				break;

			default:
				break;
		}

		if (Size & 1)  // Must be an even number.
			Size++;
		ResourceSize -= Size;
		Resources += Size;
	}