/*--------------------------------------------------------------------
* DESCRIPTION
* Return the header for the profile.
*
* AUTHOR
* doro
*
* DATE CREATED
* October 23, 1995
*------------------------------------------------------------------*/
SpStatus_t KSPAPI SpProfileLoadHeader(
char *Filename,
SpFileProps_t *Props,
SpHeader_t FAR *Header)
{
SpHugeBuffer_t BufferAddress;
SpStatus_t Status = SpStatBadProfile;
KpFileId FD;
char *name;
KpUInt32_t Read_OK;
KpInt32_t Read_Amount = HEADER_SIZE;
KpFileProps_t fileProps;
if (!SpIsICCProfile(Filename, Props))
return (SpStatBadProfile);
name = Filename;
BufferAddress = allocBufferPtr(HEADER_SIZE);
if (BufferAddress == NULL)
return (SpStatMemory);
#if defined (KPMAC)
SpCvrtSpFileProps(Props, &fileProps);
#endif
if (KpFileOpen(name, "r", &fileProps, &FD)) /* 0 = not opened */
{
/* Read HEADER_SIZE into Buffer */
Read_OK = KpFileRead(FD, BufferAddress, &Read_Amount);
/* Close File */
if (!KpFileClose(FD))
Status = SpStatBadProfile;
if (Read_OK)
{
Status = SpHeaderToPublic(BufferAddress, HEADER_SIZE, Header);
}
}
freeBufferPtr(BufferAddress);
return Status;
}
/*--------------------------------------------------------------------
* DESCRIPTION
* Convert profile file to internal format.
*
* AUTHOR
* lsh
*
* DATE CREATED
* October 18, 1993
*------------------------------------------------------------------*/
SpStatus_t SpProfileLoadFromBufferImp (
SpProfileData_t FAR *ProfileData,
char KPHUGE *BaseAddr)
{
SpStatus_t Status;
char KPHUGE *Ptr;
KpUInt32_t ProfileSize;
KpUInt32_t TagDataHeader;
KpUInt32_t Offset;
KpUInt32_t Count;
KpUInt32_t i;
SpTagId_t TagId;
KpUInt32_t TagOffset;
KpUInt32_t TagSize;
/* validate that atleast the first long of the buffer is readable */
if (BaseAddr == NULL)
return SpStatBadBuffer;
/* get the long, this is the size of the profile data */
Ptr = BaseAddr;
ProfileSize = SpGetUInt32 (&Ptr);
/* validate that the entire buffer is readable */
if (BaseAddr == NULL)
return SpStatBadBuffer;
/* convert the header to public form */
Status = SpHeaderToPublic (BaseAddr, ProfileSize, &ProfileData->Header);
if (SpStatSuccess != Status)
return Status;
TagDataHeader = 128;
Ptr = BaseAddr + TagDataHeader;
/* check that the offset to the Tag Data is inside the file */
if (ProfileSize < TagDataHeader + 4)
return SpStatOutOfRange;
/* get number of tags */
Offset = TagDataHeader + sizeof (KpUInt32_t);
if (ProfileSize < Offset)
return SpStatBadProfile;
Ptr = BaseAddr + TagDataHeader;
Count = SpGetUInt32 (&Ptr);
/* validate that tag directory is readable */
if (ProfileSize < Offset + Count * 3 * sizeof (KpUInt32_t))
Status = SpStatBadProfileDir;
/* Set the Profile Size and initialize the Profile Changed Flag */
ProfileData->ProfileSize = ProfileSize;
ProfileData->ProfChanged = KPFALSE;
/* build tag directory */
Status = SpStatSuccess;
for (i = 0; (SpStatSuccess == Status) && (i < Count); i++) {
TagId = (SpTagId_t) SpGetUInt32 (&Ptr);
TagOffset = SpGetUInt32 (&Ptr);
if (ProfileSize < TagOffset)
return SpStatBadProfileDir;
/* The following two lines are removed to allow for reading of
certain ICC Profiles that don't meet the specification.
This has been a continual support problem and we've decided
to go with the other CMM vendors and loosen our criteria */
/* if (TagOffset & 3)
return SpStatBadProfileDir; */
TagSize = SpGetUInt32 (&Ptr);
/* Casting one of the items of the sum to the 64-bit type to
* force the whole expression be calculated in 64-bit. That
* protects the check from overflowing
*/
if (ProfileSize < (jlong)TagOffset + TagSize)
return SpStatBadProfileDir;
Status = SpTagDirEntryAdd (ProfileData, TagId,
TagSize, BaseAddr + TagOffset);
}
return Status;
}
