Fix dangling pointer to ID array in CPDF_SecurityHandler.chromium/3238chromium/3237

This was caused by breaking the reference from CPDF_SecurityHandler to
CPDF_Parser in https://pdfium-review.googlesource.com/c/pdfium/+/15290

The reference was replaced with a reference to the ID Array and a copy
of the password. The issue is that when parsing PDFs with multiple
trailers, the trailer containing the ID array may be replaced and
destroyed in CPDF_Parser::TrailerData::SetMainTrailer() after being
passed to CPDF_SecurityHandler, which would then have a dangling
pointer to it.

This CL changes the CPDF_SecurityHandler to hold a copy of the original
file ID instead of all the ID Array.

Bug: chromium:771479,chromium:772376
Change-Id: Id98100502093d890fc2fe6a3da139f910daf38f4
Reviewed-on: https://pdfium-review.googlesource.com/15910
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>

0 files changed, 0 insertions, 0 deletions