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Brian Feldman
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422658d924
@ -1,6 +1,16 @@
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ChangeLog file for zlib
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Changes in 1.1.4 (11 March 2002)
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- ZFREE was repeated on same allocation on some error conditions.
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This creates a security problem described in
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http://www.zlib.org/advisory-2002-03-11.txt
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- Returned incorrect error (Z_MEM_ERROR) on some invalid data
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- Avoid accesses before window for invalid distances with inflate window
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less than 32K.
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- force windowBits > 8 to avoid a bug in the encoder for a window size
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of 256 bytes. (A complete fix will be available in 1.1.5).
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Changes in 1.1.3 (9 July 1998)
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- fix "an inflate input buffer bug that shows up on rare but persistent
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occasions" (Mark)
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108
lib/libz/FAQ
108
lib/libz/FAQ
@ -3,70 +3,98 @@
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If your question is not there, please check the zlib home page
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http://www.cdrom.com/pub/infozip/zlib/ which may have more recent information.
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http://www.zlib.org which may have more recent information.
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The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
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1) I need a Windows DLL
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2) I need a Visual Basic interface to zlib
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3) compress() returns Z_BUF_ERROR
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4) deflate or inflate returns Z_BUF_ERROR
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5) Where is the zlib documentation (man pages, etc...)?
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6) Why don't you use GNU autoconf, libtool, etc...?
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7) There is a bug in zlib.
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8) I get "undefined reference to gzputc"
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1. Is zlib Y2K-compliant?
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Yes. zlib doesn't handle dates.
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2. Where can I get a Windows DLL version?
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1) I need a Windows DLL
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The zlib sources can be compiled without change to produce a DLL. If you
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want a precompiled DLL, see http://www.winimage.com/zLibDll/ . Questions
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about the zlib DLL should be sent to Gilles Vollant (info@winimage.com).
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The zlib sources can be compiled without change to produce a DLL.
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If you want a precompiled DLL, see http://www.winimage.com/zLibDll
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3. Where can I get a Visual Basic interface to zlib?
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See
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* http://www.winimage.com/zLibDll/cmp-z-it.zip
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* http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm
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* contrib/visual-basic.txt in the zlib distribution
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2) I need a Visual Basic interface to zlib
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4. compress() returns Z_BUF_ERROR
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See http://www.tcfb.com/dowseware/cmp-z-it.zip
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http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm
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and contrib/visual-basic.txt
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Make sure that before the call of compress, the length of the compressed
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buffer is equal to the total size of the compressed buffer and not
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zero. For Visual Basic, check that this parameter is passed by reference
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("as any"), not by value ("as long").
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3) compress() returns Z_BUF_ERROR
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5. deflate() or inflate() returns Z_BUF_ERROR
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Make sure that before the call of compress, the length of the
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compressed buffer is equal to the total size of the compressed buffer
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and not zero. For Visual Basic, check that this parameter is passed
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by reference ("as any"), not by value ("as long").
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Before making the call, make sure that avail_in and avail_out are not
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zero. When setting the parameter flush equal to Z_FINISH, also make sure
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that avail_out is big enough to allow processing all pending input.
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6. Where's the zlib documentation (man pages, etc.)?
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4) deflate or inflate returns Z_BUF_ERROR
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It's in zlib.h for the moment, and Francis S. Lin has converted it to a
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web page zlib.html. Volunteers to transform this to Unix-style man pages,
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please contact Jean-loup Gailly (jloup@gzip.org). Examples of zlib usage
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are in the files example.c and minigzip.c.
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Make sure that before the call avail_in and avail_out are not zero.
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7. Why don't you use GNU autoconf or libtool or ...?
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Because we would like to keep zlib as a very small and simple
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package. zlib is rather portable and doesn't need much configuration.
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5) Where is the zlib documentation (man pages, etc...)?
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8. I found a bug in zlib.
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It's in zlib.h for the moment. Volunteers to transform this
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to man pages, please contact jloup@gzip.org. Examples of zlib usage
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are in the files example.c and minigzip.c.
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Most of the time, such problems are due to an incorrect usage of
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zlib. Please try to reproduce the problem with a small program and send
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the corresponding source to us at zlib@gzip.org . Do not send
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multi-megabyte data files without prior agreement.
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9. Why do I get "undefined reference to gzputc"?
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6) Why don't you use GNU autoconf, libtool, etc...?
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If "make test" produces something like
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Because we would like to keep zlib as a very small and simple package.
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zlib is rather portable and doesn't need much configuration.
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example.o(.text+0x154): undefined reference to `gzputc'
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check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
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/usr/X11R6/lib. Remove any old versions, then do "make install".
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10. I need a Delphi interface to zlib.
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7) There is a bug in zlib.
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See the directories contrib/delphi and contrib/delphi2 in the zlib
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distribution.
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Most of the time, such problems are due to an incorrect usage
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of zlib. Please try to reproduce the problem with a small
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program and send us the corresponding source at zlib@quest.jpl.nasa.gov
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Do not send multi-megabyte data files without prior agreement.
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11. Can zlib handle .zip archives?
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See the directory contrib/minizip in the zlib distribution.
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8) I get "undefined reference to gzputc"
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12. Can zlib handle .Z files?
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If "make test" produces something like
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example.o(.text+0x174):
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check that you don't have old files libz.* in /usr/lib, /usr/local/lib
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or /usr/X11R6/lib. Remove old versions then do "make install".
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No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
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the code of uncompress on your own.
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13. How can I make a Unix shared library?
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make clean
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./configure -s
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make
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14. Why does "make test" fail on Mac OS X?
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Mac OS X already includes zlib as a shared library, and so -lz links the
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shared library instead of the one that the "make" compiled. For zlib
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1.1.3, the two are incompatible due to different compile-time
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options. Simply change the -lz in the Makefile to libz.a, and it will use
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the compiled library instead of the shared one and the "make test" will
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succeed.
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15. I have a question about OttoPDF
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We are not the authors of OttoPDF. The real author is on the OttoPDF web
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site Joel Hainley jhainley@myndkryme.com.
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@ -1,7 +1,7 @@
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zlib 1.1.3 is a general purpose data compression library. All the code
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zlib 1.1.4 is a general purpose data compression library. All the code
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is thread safe. The data format used by the zlib library
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is described by RFCs (Request for Comments) 1950 to 1952 in the files
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ftp://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
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http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
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format) and rfc1952.txt (gzip format). These documents are also available in
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other formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
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@ -14,51 +14,50 @@ except example.c and minigzip.c.
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To compile all files and run the test program, follow the instructions
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given at the top of Makefile. In short "make test; make install"
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should work for most machines. For Unix: "configure; make test; make install"
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should work for most machines. For Unix: "./configure; make test; make install"
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For MSDOS, use one of the special makefiles such as Makefile.msc.
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For VMS, use Make_vms.com or descrip.mms.
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Questions about zlib should be sent to <zlib@quest.jpl.nasa.gov>, or to
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Questions about zlib should be sent to <zlib@gzip.org>, or to
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Gilles Vollant <info@winimage.com> for the Windows DLL version.
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The zlib home page is http://www.cdrom.com/pub/infozip/zlib/
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The official zlib ftp site is ftp://ftp.cdrom.com/pub/infozip/zlib/
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Before reporting a problem, please check those sites to verify that
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The zlib home page is http://www.zlib.org or http://www.gzip.org/zlib/
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Before reporting a problem, please check this site to verify that
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you have the latest version of zlib; otherwise get the latest version and
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check whether the problem still exists or not.
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Mark Nelson <markn@tiny.com> wrote an article about zlib for the Jan. 1997
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PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html
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before asking for help.
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Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
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issue of Dr. Dobb's Journal; a copy of the article is available in
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http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm
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http://dogma.net/markn/articles/zlibtool/zlibtool.htm
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The changes made in version 1.1.3 are documented in the file ChangeLog.
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The main changes since 1.1.2 are:
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The changes made in version 1.1.4 are documented in the file ChangeLog.
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The only changes made since 1.1.3 are bug corrections:
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- fix "an inflate input buffer bug that shows up on rare but persistent
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occasions" (Mark)
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- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
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- fix gzseek(..., SEEK_SET) in write mode
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- fix crc check after a gzeek (Frank Faubert)
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- fix miniunzip when the last entry in a zip file is itself a zip file
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(J Lillge)
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- add contrib/asm586 and contrib/asm686 (Brian Raiter)
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See http://www.muppetlabs.com/~breadbox/software/assembly.html
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- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
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- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
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- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
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- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
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- added a FAQ file
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- ZFREE was repeated on same allocation on some error conditions.
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This creates a security problem described in
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http://www.zlib.org/advisory-2002-03-11.txt
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- Returned incorrect error (Z_MEM_ERROR) on some invalid data
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- Avoid accesses before window for invalid distances with inflate window
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less than 32K.
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- force windowBits > 8 to avoid a bug in the encoder for a window size
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of 256 bytes. (A complete fix will be available in 1.1.5).
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The beta version 1.1.5beta includes many more changes. A new official
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version 1.1.5 will be released as soon as extensive testing has been
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completed on it.
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plus many changes for portability.
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Unsupported third party contributions are provided in directory "contrib".
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A Java implementation of zlib is available in the Java Development Kit 1.1
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A Java implementation of zlib is available in the Java Development Kit
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http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
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See the zlib home page http://www.cdrom.com/pub/infozip/zlib/ for details.
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See the zlib home page http://www.zlib.org for details.
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A Perl interface to zlib written by Paul Marquess <pmarquess@bfsec.bt.co.uk>
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is in the CPAN (Comprehensive Perl Archive Network) sites, such as:
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ftp://ftp.cis.ufl.edu/pub/perl/CPAN/modules/by-module/Compress/Compress-Zlib*
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is in the CPAN (Comprehensive Perl Archive Network) sites
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http://www.cpan.org/modules/by-module/Compress/
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A Python interface to zlib written by A.M. Kuchling <amk@magnet.com>
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is available in Python 1.5 and later versions, see
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@ -117,7 +116,7 @@ Acknowledgments:
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Copyright notice:
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(C) 1995-1998 Jean-loup Gailly and Mark Adler
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(C) 1995-2002 Jean-loup Gailly and Mark Adler
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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@ -1,5 +1,5 @@
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/* infblock.h -- header to use infblock.c
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* Copyright (C) 1995-1998 Mark Adler
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* Copyright (C) 1995-2002 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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@ -1,5 +1,5 @@
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/* infcodes.h -- header to use infcodes.c
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* Copyright (C) 1995-1998 Mark Adler
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* Copyright (C) 1995-2002 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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@ -1,5 +1,5 @@
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/* inffast.h -- header to use inffast.c
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* Copyright (C) 1995-1998 Mark Adler
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* Copyright (C) 1995-2002 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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@ -1,5 +1,5 @@
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/* inftrees.h -- header to use inftrees.c
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* Copyright (C) 1995-1998 Mark Adler
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* Copyright (C) 1995-2002 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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@ -1,5 +1,5 @@
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/* infutil.h -- types and macros common to blocks and codes
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* Copyright (C) 1995-1998 Mark Adler
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* Copyright (C) 1995-2002 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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@ -1,7 +1,7 @@
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/* zlib.h -- interface of the 'zlib' general purpose compression library
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version 1.1.3, July 9th, 1998
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version 1.1.4, March 11th, 2002
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Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
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Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler
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This software is provided 'as-is', without any express or implied
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||||
warranty. In no event will the authors be held liable for any damages
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||||
@ -37,7 +37,7 @@
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extern "C" {
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#endif
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#define ZLIB_VERSION "1.1.3"
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#define ZLIB_VERSION "1.1.4"
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/*
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||||
The 'zlib' compression library provides in-memory compression and
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