1. 04 12月, 2016 1 次提交
  2. 30 10月, 2016 1 次提交
  3. 28 10月, 2016 1 次提交
    • M
      Fix bug when level 0 used with Z_HUFFMAN or Z_RLE. · 94575859
      Mark Adler 提交于
      Compression level 0 requests no compression, using only stored
      blocks. When Z_HUFFMAN or Z_RLE was used with level 0 (granted,
      an odd choice, but permitted), the resulting blocks were mostly
      fixed or dynamic. The reason is that deflate_stored() was not
      being called in that case. The compressed data was valid, but it
      was not what the application requested. This commit assures that
      only stored blocks are emitted for compression level 0, regardless
      of the strategy selected.
      94575859
  4. 25 10月, 2016 2 次提交
    • M
      Do a more thorough check of the state for every stream call. · b516b4bd
      Mark Adler 提交于
      This verifies that the state has been initialized, that it is the
      expected type of state, deflate or inflate, and that at least the
      first several bytes of the internal state have not been clobbered.
      b516b4bd
    • M
      Reject a window size of 256 bytes if not using the zlib wrapper. · 049578f0
      Mark Adler 提交于
      There is a bug in deflate for windowBits == 8 (256-byte window).
      As a result, zlib silently changes a request for 8 to a request
      for 9 (512-byte window), and sets the zlib header accordingly so
      that the decompressor knows to use a 512-byte window. However if
      deflateInit2() is used for raw deflate or gzip streams, then there
      is no indication that the request was not honored, and the
      application might assume that it can use a 256-byte window when
      decompressing. This commit returns an error if the user requests
      a 256-byte window when using raw deflate or gzip encoding.
      049578f0
  5. 15 10月, 2016 1 次提交
  6. 12 10月, 2016 1 次提交
  7. 22 9月, 2016 1 次提交
    • M
      Remove dummy structure declarations for old buggy compilers. · 3fb251b3
      Mark Adler 提交于
      While woolly mammoths still roamed the Earth and before Atlantis
      sunk into the ocean, there were C compilers that could not handle
      forward structure references, e.g. "struct name;". zlib dutifully
      provided a work-around for such compilers. That work-around is no
      longer needed, and, per the recommendation of a security audit of
      the zlib code by Trail of Bits and TrustInSoft, in support of the
      Mozilla Foundation, should be removed since what a compiler will
      do with this is technically undefined. From the report: "there is
      no telling what interactions the bug could have in the future with
      link-time optimizations and type-based alias analyses, both
      features that are present (but not default) in clang."
      3fb251b3
  8. 02 8月, 2015 1 次提交
    • M
      Align deflateParams() and its documentation in zlib.h. · 43bfaba3
      Mark Adler 提交于
      This updates the documentation to reflect the behavior of
      deflateParams() when it is not able to compress all of the input
      data provided so far due to insufficient output space.  It also
      assures that data provided is compressed before the parameter
      changes, even if at the beginning of the stream.
      43bfaba3
  9. 29 7月, 2015 2 次提交
  10. 06 7月, 2015 1 次提交
  11. 24 5月, 2013 1 次提交
  12. 03 5月, 2013 1 次提交
  13. 29 4月, 2013 1 次提交
  14. 14 4月, 2013 1 次提交
  15. 13 4月, 2013 1 次提交
  16. 25 3月, 2013 2 次提交
  17. 13 8月, 2012 1 次提交
    • M
      Clean up the usage of z_const and respect const usage within zlib. · 62d6112a
      Mark Adler 提交于
      This patch allows zlib to compile cleanly with the -Wcast-qual gcc
      warning enabled, but only if ZLIB_CONST is defined, which adds
      const to next_in and msg in z_stream and in the in_func prototype.
      A --const option is added to ./configure which adds -DZLIB_CONST
      to the compile flags, and adds -Wcast-qual to the compile flags
      when ZLIBGCCWARN is set in the environment.
      62d6112a
  18. 03 5月, 2012 1 次提交
  19. 13 2月, 2012 1 次提交
  20. 30 1月, 2012 1 次提交
  21. 17 1月, 2012 1 次提交
  22. 15 1月, 2012 1 次提交
  23. 14 1月, 2012 1 次提交
    • M
      Insert the first two strings in the hash table after a flush. · 4f5779a8
      Mark Adler 提交于
      This allows deflate to generate the same output when continuing after
      a Z_SYNC_FLUSH vs. using deflateSetDictionary() after a Z_FULL_FLUSH
      or a deflateReset().  It also slightly improves compression when
      flushing by providing two more strings to possibly match at the start
      of the new block.
      4f5779a8
  24. 08 1月, 2012 2 次提交
  25. 29 12月, 2011 3 次提交
    • M
      Permit Z_NULL arguments to deflatePending. · 19761b85
      Mark Adler 提交于
      This avoids having to create useless variables for return values
      that aren't needed.
      19761b85
    • M
      Avoid extraneous empty blocks when doing empty flushes. · 9d55abc9
      Mark Adler 提交于
      Previously when doing an empty flush, a extra static or stored block
      could be emitted before the requested empty static or stored block.
      This patch prevents the emission of empty blocks by the deflate_*
      functions.
      9d55abc9
    • M
      Permit stronger flushes after Z_BLOCK flushes. · f1ebdd6a
      Mark Adler 提交于
      The incorporation of the Z_BLOCK flush did not update the rejection
      of lower ranked flushes immediately after higher ranked flushes with
      no more input data.  This prevented an empty Z_SYNC_FLUSH right after
      a Z_BLOCK flush, which would be desired to bring the deflate stream
      to a byte boundary conditionally on whether or not it was already at
      a byte boundary.  This patch re-ranks Z_BLOCK above Z_NO_FLUSH but
      below Z_PARTIAL_FLUSH, allowing stronger empty flushes to follow a
      Z_BLOCK flush.
      f1ebdd6a
  26. 19 12月, 2011 1 次提交
  27. 08 12月, 2011 1 次提交
    • M
      Enable dictionary setting in middle of stream, and keeping the dictionary. · afe7cf78
      Mark Adler 提交于
      This patch adds the deflateResetKeep() function to retain the sliding
      window for the next deflate operation, and fixes an inflateResetKeep()
      problem that came from inflate() not updating the window when the
      stream completed.  This enables constructing and decompressing a series
      of concatenated deflate streams where each can depend on the history of
      uncompressed data that precedes it.
      
      This generalizes deflateSetDictionary() and inflateSetDictionary() to
      permit setting the dictionary in the middle of a stream for raw deflate
      and inflate.  This in combination with the Keep functions enables a
      scheme for updating files block by block with the transmission of
      compressed data, where blocks are sent with deflateResetKeep() to
      retain history for better compression, and deflateSetDictionary() is
      used for blocks already present at the receiver to skip compression but
      insert that data in the history, again for better compression.  The
      corresponding inflate calls are done on the receiver side.
      afe7cf78
  28. 07 10月, 2011 1 次提交
    • M
      Add a ./config --solo option to make zlib subset with no libary use · f442c1e8
      Mark Adler 提交于
      A common request has been the ability to compile zlib to require no
      other libraries.  This --solo option provides that ability.  The price
      is that the gz*, compress*, and uncompress functions are eliminated,
      and that the user must provide memory allocation and free routines to
      deflate and inflate when initializing.
      f442c1e8
  29. 23 9月, 2011 3 次提交
  30. 12 9月, 2011 2 次提交
  31. 10 9月, 2011 1 次提交