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This reverts commit bb045907a043b5c6de9fb804ff11087333747329.
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Move methods responsible for loading or keeping track of objects to QPDF_objects.cc. The split was part of the reverted #1297. Reintroducing it now makes it easier/safer to keep the work to refactor the xref and object tables in sync with main.
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Refine recovery from missing startxref (fixes #1335)
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Refactor xref table reconstruction (Fixes #1362)
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If startxref cannot be found in the last 1024 try finding it in the whole file and check whether it is valid.
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Split reconstruction into three passes - scanning of input for objects and trailer, insertion of objects into the xref table, and loading the trailer. This allows insertion to take place in the usual reverse order and removes the need for a separate insertReconstructedXrefEntry method. It also allows trailer to be tried from most recent to oldest. Ignore any found trailers without /Root entry.
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The original test file contains multiple entries with id 0 and offset 0. One entry has been modified such that the id is valid (6). Object streams with invalid offsets are a source of unreproduceable oss-fuzz time-outs.
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Modernise constructors, make classes final, etc.
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Add new private Util.hh header to define inline functions and expose as ordinary functions in QUtil.
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- Remove unnecessary QPDF_DLLs - make deleted constructors public - move some comments to support tooltips - modernise some constructors and destructors - change some member shared pointers to unique pointers
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Move all stream-specific methods to new class qpdf::Stream
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Except for virtual functions to avoid the need for users to update code.
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This improves indentation of long strings. This commit also fixes some trailing whitespace in ChangeLog.
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When recovering XRef streams, start with the stream with the largest /Size rather than the largest offset. Also, if reconstruction fails to find a trailer with a valid /Root entry search for a root object.
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Provide correct obj_gen and offset.
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This reverts commit ff2a78f579ebdd06b417e34260a17dba06e71137, reversing changes made to 8f54319f7a6514110f4b05cbbf1cb1c9fc8cb6a0.
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This reverts commit 0e92cf6bf399249c603c3d0212e898fd29e71fcd, reversing changes made to 7d34b89a69e8e89c098dd373442f7df809c28eff.
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This reverts commit c648b9a018105a3c30b3e7f3c5f8a058d3ddd92c, reversing changes made to 12b67a3227df6b6df3a4f5f098e11cce173ff7d5.
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Also, make obj_cache private and rename to table.
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Move methods responsible for loading or keeping track of objects to QPDF_objects.cc.