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Defer loading the Root, Info, and Encrypt objects until we have loaded all of

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the xref tables.
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Michael R Sweet 2021-05-08 22:05:40 -04:00
parent 4e4c47ab33
commit e1c145b10a
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GPG Key ID: 999559A027815955
1 changed files with 13 additions and 10 deletions
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23
pdfio-file.c
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@ -922,22 +922,25 @@ load_xref(pdfio_file_t *pdf, // I - PDF file
// Save the trailer dictionary and grab the root (catalog) and info // Save the trailer dictionary and grab the root (catalog) and info
// objects... // objects...
pdf->trailer = trailer.value.dict; pdf->trailer = trailer.value.dict;
if ((pdf->root = pdfioDictGetObject(pdf->trailer, "Root")) == NULL)
{
_pdfioFileError(pdf, "Missing Root object.");
return (false);
}
pdf->info = pdfioDictGetObject(pdf->trailer, "Info");
pdf->encrypt = pdfioDictGetObject(pdf->trailer, "Encrypt");
pdf->id_array = pdfioDictGetArray(pdf->trailer, "ID");
} }
if ((xref_offset = (off_t)pdfioDictGetNumber(trailer.value.dict, "Prev")) <= 0) if ((xref_offset = (off_t)pdfioDictGetNumber(trailer.value.dict, "Prev")) <= 0)
done = true; done = true;
} }
// Once we have all of the xref tables loaded, get the important objects and
// build the pages array...
if ((pdf->root = pdfioDictGetObject(pdf->trailer, "Root")) == NULL)
{
_pdfioFileError(pdf, "Missing Root object.");
return (false);
}
pdf->info = pdfioDictGetObject(pdf->trailer, "Info");
pdf->encrypt = pdfioDictGetObject(pdf->trailer, "Encrypt");
pdf->id_array = pdfioDictGetArray(pdf->trailer, "ID");
// If we get this far, we successfully loaded everything...
return (true); return (true);
} }