提交 8e34b3a8 编写于 作者: M Mark Adler

zlib 1.2.0.2

上级 13a294f0
ChangeLog file for zlib
Changes in 1.2.0.2 (13 July 2003)
- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
- Attempt to avoid warnings in crc32.c for pointer-int conversion
- Add AIX to configure, remove aix directory [Bakker]
- Add some casts to minigzip.c
- Improve checking after insecure sprintf() or vsprintf() calls
- Remove #elif's from crc32.c
- Change leave label to inf_leave in inflate.c and infback.c to avoid
library conflicts
- Remove inflate gzip decoding by default--only enable gzip decoding by
special request for stricter backward compatibility
- Add zlibCompileFlags() function to return compilation information
- More typecasting in deflate.c to avoid warnings
- Remove leading underscore from _Capital #defines [Truta]
- Fix configure to link shared library when testing
- Add some Windows CE target adjustments [Mai]
- Remove #define ZLIB_DLL in zconf.h [Vollant]
- Add zlib.3 [Rodgers]
- Update RFC URL in deflate.c and algorithm.txt [Mai]
- Add zlib_dll_FAQ.txt to contrib [Truta]
- Add UL to some constants [Truta]
- Update minizip and vstudio [Vollant]
- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
- Expand use of NO_DUMMY_DECL to avoid all dummy structures
- Added iostream3 to contrib [Schwardt]
- Replace rewind() with fseek() for WinCE [Truta]
- Improve setting of zlib format compression level flags
- Report 0 for huffman and rle strategies and for level == 0 or 1
- Report 2 only for level == 6
- Only deal with 64K limit when necessary at compile time [Truta]
- Allow TOO_FAR check to be turned off at compile time [Truta]
- Added gzclearerr() function [Souza]
- Added gzungetc() function
Changes in 1.2.0.1 (17 March 2003)
- Add Z_RLE strategy for run-length encoding [Truta]
- When Z_RLE requested, restrict matches to distance one
......@@ -12,7 +46,7 @@ Changes in 1.2.0.1 (17 March 2003)
- Include additional header file on VMS for off_t typedef
- Try to use _vsnprintf where it supplants vsprintf [Vollant]
- Add some casts in inffast.c
- Enchance comments in zlib.h on what happens if the gzprintf() tries to
- Enchance comments in zlib.h on what happens if gzprintf() tries to
write more than 4095 bytes before compression
- Remove unused state from inflateBackEnd()
- Remove exit(0) from minigzip.c, example.c
......
......@@ -228,7 +228,8 @@ The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
hand, if zlib is compiled to use snprintf() or vsnprintf(), which should
normally be the case, then there is no vulnerability. The ./configure
script will display warnings if an insecure variation of sprintf() will
be used by gzprintf().
be used by gzprintf(). Also the zlibCompileFlags() functions will return
information on what variant of sprintf() is used by gzprintf().
If you don't have snprintf() or vsnprintf() and would like one, you can
find a portable implementation here:
......
......@@ -24,7 +24,7 @@ LDFLAGS=libz.a
LDSHARED=$(CC)
CPP=$(CC) -E
VER=1.2.0.1
VER=1.2.0.2
LIBS=libz.a
SHAREDLIB=libz.so
......
......@@ -24,7 +24,7 @@ LDFLAGS=libz.a
LDSHARED=$(CC)
CPP=$(CC) -E
VER=1.2.0.1
VER=1.2.0.2
LIBS=libz.a
SHAREDLIB=libz.so
......
ZLIB DATA COMPRESSION LIBRARY
zlib 1.2.0.1 is a general purpose data compression library. All the code is
zlib 1.2.0.2 is a general purpose data compression library. All the code is
thread safe. The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
......@@ -34,7 +34,7 @@ Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
issue of Dr. Dobb's Journal; a copy of the article is available in
http://dogma.net/markn/articles/zlibtool/zlibtool.htm
The changes made in version 1.2.0.1 are documented in the file ChangeLog.
The changes made in version 1.2.0.2 are documented in the file ChangeLog.
Unsupported third party contributions are provided in directory "contrib".
......
......@@ -5,6 +5,7 @@
/* @(#) $Id$ */
#define ZLIB_INTERNAL
#include "zlib.h"
#define BASE 65521L /* largest prime smaller than 65536 */
......
To make a shared library:
1. Compile a static library
2. Use mkexps on that to create libz.exp
3. Apply the configure.diff patch to configure
4. Run the new configure to make a new Makefile
5. Use the new Makefile to make the shared library
Courtesy of dbakker@arrayasolutions.com
*** ../orig/zlib-1.1.4/configure Wed Jul 8 14:19:35 1998
--- configure Sun Feb 9 11:11:19 2003
***************
*** 18,23 ****
--- 18,24 ----
# If you have problems, try without defining CC and CFLAGS before reporting
# an error.
+ LDFLAGS="-L. -lz"
LIBS=libz.a
SHAREDLIB=libz.so
VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
***************
*** 116,121 ****
--- 117,128 ----
SFLAGS=${CFLAGS-"-Kconform_pic -O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc -G"};;
+ AIX*)
+ SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
+ CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
+ LDTESTSHARED=${LDSHARED-"cc -G"}
+ LDSHAREDFLAGS="-L. libz.so"
+ LDSHARED=${LDSHARED-"cc -G"};;
# send working options for other systems to support@gzip.org
*) SFLAGS=${CFLAGS-"-O"}
CFLAGS=${CFLAGS-"-O"}
***************
*** 127,135 ****
echo Checking for shared library support...
# we must test in two steps (cc then ld), required at least on SunOS 4.x
if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
! test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
CFLAGS="$SFLAGS"
LIBS="$SHAREDLIB.$VER"
echo Building shared library $SHAREDLIB.$VER with $CC.
elif test -z "$old_cc" -a -z "$old_cflags"; then
echo No shared library suppport.
--- 134,143 ----
echo Checking for shared library support...
# we must test in two steps (cc then ld), required at least on SunOS 4.x
if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
! test "`($LDTESTSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
CFLAGS="$SFLAGS"
LIBS="$SHAREDLIB.$VER"
+ LDFLAGS="$LDSHAREDFLAGS"
echo Building shared library $SHAREDLIB.$VER with $CC.
elif test -z "$old_cc" -a -z "$old_cflags"; then
echo No shared library suppport.
***************
*** 209,212 ****
--- 217,221 ----
/^exec_prefix *=/s%=.*%=$exec_prefix%
/^libdir *=/s%=.*%=$libdir%
/^includedir *=/s%=.*%=$includedir%
+ /^LDFLAGS *=/s%=.*%=$LDFLAGS%
" > Makefile
#!/bin/ksh
#
# mkexps - make export list
# This program creates an export list by combining all the "." and normal names
# into one list.
#
if [[ "$#" -ne 1 ]]
then
print "Usage: mkexps ArchiveFile"
exit -2
fi
if [[ ! -f $1 ]]
then
print "mkexps: Cannot open file \"$1\""
exit -1
fi
dump -g $1 | awk '
BEGIN {
top = 1
}
/^[ ]*[0-9][0-9]*/ {
if ( (n = index( $2, "." )) > 0 ) {
export_array[ top++ ] = substr( $2, n+1, length( $2 ))
}
else {
export_array[ top++ ] = $2
}
}
END {
for ( i = 1; i < top; i++ )
{
print export_array[ i ]
}
}' | sort | uniq
......@@ -206,4 +206,4 @@ Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3,
pp. 337-343.
``DEFLATE Compressed Data Format Specification'' available in
ftp://ds.internic.net/rfc/rfc1951.txt
http://www.ietf.org/rfc/rfc1951.txt
......@@ -5,6 +5,7 @@
/* @(#) $Id$ */
#define ZLIB_INTERNAL
#include "zlib.h"
/* ===========================================================================
......
......@@ -19,6 +19,7 @@
# an error.
LIBS=libz.a
LDFLAGS="-L. ${LIBS}"
SHAREDLIB=libz.so
VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
AR=${AR-"ar rc"}
......@@ -53,6 +54,10 @@ case "$1" in
esac
done
if [ $shared -eq 1 ]; then
LDFLAGS="-L. ${SHAREDLIB}"
fi
test=ztest$$
cat > $test.c <<EOF
extern int getchar();
......@@ -123,6 +128,10 @@ else
SFLAGS=${CFLAGS-"-KPIC -O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc -G"};;
AIX*) # Courtesy of dbakker@arrayasolutions.com
SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
LDSHARED=${LDSHARED-"xlc -G"};;
# send working options for other systems to support@gzip.org
*) SFLAGS=${CFLAGS-"-O"}
CFLAGS=${CFLAGS-"-O"}
......@@ -422,4 +431,5 @@ sed < Makefile.in "
/^exec_prefix *=/s%=.*%=$exec_prefix%
/^libdir *=/s%=.*%=$libdir%
/^includedir *=/s%=.*%=$includedir%
/^LDFLAGS *=/s%=.*%=$LDFLAGS%
" > Makefile
These classes provide a C++ stream interface to the zlib library. It allows you
to do things like:
gzofstream outf("blah.gz");
outf << "These go into the gzip file " << 123 << endl;
It does this by deriving a specialized stream buffer for gzipped files, which is
the way Stroustrup would have done it. :->
The gzifstream and gzofstream classes were originally written by Kevin Ruland
and made available in the zlib contrib/iostream directory. The older version still
compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of
this version.
The new classes are as standard-compliant as possible, closely following the
approach of the standard library's fstream classes. It compiles under gcc versions
3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard
library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs
from the previous one in the following respects:
- added showmanyc
- added setbuf, with support for unbuffered output via setbuf(0,0)
- a few bug fixes of stream behavior
- gzipped output file opened with default compression level instead of maximum level
- setcompressionlevel()/strategy() members replaced by single setcompression()
The code is provided "as is", with the permission to use, copy, modify, distribute
and sell it for any purpose without fee.
Ludwig Schwardt
<schwardt@sun.ac.za>
DSP Lab
Electrical & Electronic Engineering Department
University of Stellenbosch
South Africa
Possible upgrades to gzfilebuf:
- The ability to do putback (e.g. putbackfail)
- The ability to seek (zlib supports this, but could be slow/tricky)
- Simultaneous read/write access (does it make sense?)
- Support for ios_base::ate open mode
- Locale support?
- Check public interface to see which calls give problems
(due to dependence on library internals)
- Override operator<<(ostream&, gzfilebuf*) to allow direct copying
of stream buffer to stream ( i.e. os << is.rdbuf(); )
/*
* Test program for gzifstream and gzofstream
*
* by Ludwig Schwardt <schwardt@sun.ac.za>
* original version by Kevin Ruland <kevin@rodin.wustl.edu>
*/
#include "zfstream.h"
#include <iostream> // for cout
int main() {
gzofstream outf;
gzifstream inf;
char buf[80];
outf.open("test1.txt.gz");
outf << "The quick brown fox sidestepped the lazy canine\n"
<< 1.3 << "\nPlan " << 9 << std::endl;
outf.close();
std::cout << "Wrote the following message to 'test1.txt.gz' (check with zcat or zless):\n"
<< "The quick brown fox sidestepped the lazy canine\n"
<< 1.3 << "\nPlan " << 9 << std::endl;
std::cout << "\nReading 'test1.txt.gz' (buffered) produces:\n";
inf.open("test1.txt.gz");
while (inf.getline(buf,80,'\n')) {
std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
}
inf.close();
outf.rdbuf()->pubsetbuf(0,0);
outf.open("test2.txt.gz");
outf << setcompression(Z_NO_COMPRESSION)
<< "The quick brown fox sidestepped the lazy canine\n"
<< 1.3 << "\nPlan " << 9 << std::endl;
outf.close();
std::cout << "\nWrote the same message to 'test2.txt.gz' in uncompressed form";
std::cout << "\nReading 'test2.txt.gz' (unbuffered) produces:\n";
inf.rdbuf()->pubsetbuf(0,0);
inf.open("test2.txt.gz");
while (inf.getline(buf,80,'\n')) {
std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
}
inf.close();
return 0;
}
/*
* A C++ I/O streams interface to the zlib gz* functions
*
* by Ludwig Schwardt <schwardt@sun.ac.za>
* original version by Kevin Ruland <kevin@rodin.wustl.edu>
*
* This version is standard-compliant and compatible with gcc 3.x.
*/
#include "zfstream.h"
#include <cstring> // for strcpy, strcat, strlen (mode strings)
#include <cstdio> // for BUFSIZ
// Internal buffer sizes (default and "unbuffered" versions)
#define BIGBUFSIZE BUFSIZ
#define SMALLBUFSIZE 1
/*****************************************************************************/
// Default constructor
gzfilebuf::gzfilebuf()
: file(NULL), io_mode(std::ios_base::openmode(0)), own_fd(false),
buffer(NULL), buffer_size(BIGBUFSIZE), own_buffer(true)
{
// No buffers to start with
this->disable_buffer();
}
// Destructor
gzfilebuf::~gzfilebuf()
{
// Sync output buffer and close only if responsible for file
// (i.e. attached streams should be left open at this stage)
this->sync();
if (own_fd)
this->close();
// Make sure internal buffer is deallocated
this->disable_buffer();
}
// Set compression level and strategy
int
gzfilebuf::setcompression(int comp_level,
int comp_strategy)
{
return gzsetparams(file, comp_level, comp_strategy);
}
// Open gzipped file
gzfilebuf*
gzfilebuf::open(const char *name,
std::ios_base::openmode mode)
{
// Fail if file already open
if (this->is_open())
return NULL;
// Don't support simultaneous read/write access (yet)
if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
return NULL;
// Build mode string for gzopen and check it [27.8.1.3.2]
char char_mode[6] = "\0\0\0\0\0";
if (!this->open_mode(mode, char_mode))
return NULL;
// Attempt to open file
if ((file = gzopen(name, char_mode)) == NULL)
return NULL;
// On success, allocate internal buffer and set flags
this->enable_buffer();
io_mode = mode;
own_fd = true;
return this;
}
// Attach to gzipped file
gzfilebuf*
gzfilebuf::attach(int fd,
std::ios_base::openmode mode)
{
// Fail if file already open
if (this->is_open())
return NULL;
// Don't support simultaneous read/write access (yet)
if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
return NULL;
// Build mode string for gzdopen and check it [27.8.1.3.2]
char char_mode[6] = "\0\0\0\0\0";
if (!this->open_mode(mode, char_mode))
return NULL;
// Attempt to attach to file
if ((file = gzdopen(fd, char_mode)) == NULL)
return NULL;
// On success, allocate internal buffer and set flags
this->enable_buffer();
io_mode = mode;
own_fd = false;
return this;
}
// Close gzipped file
gzfilebuf*
gzfilebuf::close()
{
// Fail immediately if no file is open
if (!this->is_open())
return NULL;
// Assume success
gzfilebuf* retval = this;
// Attempt to sync and close gzipped file
if (this->sync() == -1)
retval = NULL;
if (gzclose(file) < 0)
retval = NULL;
// File is now gone anyway (postcondition [27.8.1.3.8])
file = NULL;
own_fd = false;
// Destroy internal buffer if it exists
this->disable_buffer();
return retval;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// Convert int open mode to mode string
bool
gzfilebuf::open_mode(std::ios_base::openmode mode,
char* c_mode) const
{
bool testb = mode & std::ios_base::binary;
bool testi = mode & std::ios_base::in;
bool testo = mode & std::ios_base::out;
bool testt = mode & std::ios_base::trunc;
bool testa = mode & std::ios_base::app;
// Check for valid flag combinations - see [27.8.1.3.2] (Table 92)
// Original zfstream hardcoded the compression level to maximum here...
// Double the time for less than 1% size improvement seems
// excessive though - keeping it at the default level
// To change back, just append "9" to the next three mode strings
if (!testi && testo && !testt && !testa)
strcpy(c_mode, "w");
if (!testi && testo && !testt && testa)
strcpy(c_mode, "a");
if (!testi && testo && testt && !testa)
strcpy(c_mode, "w");
if (testi && !testo && !testt && !testa)
strcpy(c_mode, "r");
// No read/write mode yet
// if (testi && testo && !testt && !testa)
// strcpy(c_mode, "r+");
// if (testi && testo && testt && !testa)
// strcpy(c_mode, "w+");
// Mode string should be empty for invalid combination of flags
if (strlen(c_mode) == 0)
return false;
if (testb)
strcat(c_mode, "b");
return true;
}
// Determine number of characters in internal get buffer
std::streamsize
gzfilebuf::showmanyc()
{
// Calls to underflow will fail if file not opened for reading
if (!this->is_open() || !(io_mode & std::ios_base::in))
return -1;
// Make sure get area is in use
if (this->gptr() && (this->gptr() < this->egptr()))
return std::streamsize(this->egptr() - this->gptr());
else
return 0;
}
// Fill get area from gzipped file
gzfilebuf::int_type
gzfilebuf::underflow()
{
// If something is left in the get area by chance, return it
// (this shouldn't normally happen, as underflow is only supposed
// to be called when gptr >= egptr, but it serves as error check)
if (this->gptr() && (this->gptr() < this->egptr()))
return traits_type::to_int_type(*(this->gptr()));
// If the file hasn't been opened for reading, produce error
if (!this->is_open() || !(io_mode & std::ios_base::in))
return traits_type::eof();
// Attempt to fill internal buffer from gzipped file
// (buffer must be guaranteed to exist...)
int bytes_read = gzread(file, buffer, buffer_size);
// Indicates error or EOF
if (bytes_read <= 0)
{
// Reset get area
this->setg(buffer, buffer, buffer);
return traits_type::eof();
}
// Make all bytes read from file available as get area
this->setg(buffer, buffer, buffer + bytes_read);
// Return next character in get area
return traits_type::to_int_type(*(this->gptr()));
}
// Write put area to gzipped file
gzfilebuf::int_type
gzfilebuf::overflow(int_type c)
{
// Determine whether put area is in use
if (this->pbase())
{
// Double-check pointer range
if (this->pptr() > this->epptr() || this->pptr() < this->pbase())
return traits_type::eof();
// Add extra character to buffer if not EOF
if (!traits_type::eq_int_type(c, traits_type::eof()))
{
*(this->pptr()) = traits_type::to_char_type(c);
this->pbump(1);
}
// Number of characters to write to file
int bytes_to_write = this->pptr() - this->pbase();
// Overflow doesn't fail if nothing is to be written
if (bytes_to_write > 0)
{
// If the file hasn't been opened for writing, produce error
if (!this->is_open() || !(io_mode & std::ios_base::out))
return traits_type::eof();
// If gzipped file won't accept all bytes written to it, fail
if (gzwrite(file, this->pbase(), bytes_to_write) != bytes_to_write)
return traits_type::eof();
// Reset next pointer to point to pbase on success
this->pbump(-bytes_to_write);
}
}
// Write extra character to file if not EOF
else if (!traits_type::eq_int_type(c, traits_type::eof()))
{
// If the file hasn't been opened for writing, produce error
if (!this->is_open() || !(io_mode & std::ios_base::out))
return traits_type::eof();
// Impromptu char buffer (allows "unbuffered" output)
char_type last_char = traits_type::to_char_type(c);
// If gzipped file won't accept this character, fail
if (gzwrite(file, &last_char, 1) != 1)
return traits_type::eof();
}
// If you got here, you have succeeded (even if c was EOF)
// The return value should therefore be non-EOF
if (traits_type::eq_int_type(c, traits_type::eof()))
return traits_type::not_eof(c);
else
return c;
}
// Assign new buffer
std::streambuf*
gzfilebuf::setbuf(char_type* p,
std::streamsize n)
{
// First make sure stuff is sync'ed, for safety
if (this->sync() == -1)
return NULL;
// If buffering is turned off on purpose via setbuf(0,0), still allocate one...
// "Unbuffered" only really refers to put [27.8.1.4.10], while get needs at
// least a buffer of size 1 (very inefficient though, therefore make it bigger?)
// This follows from [27.5.2.4.3]/12 (gptr needs to point at something, it seems)
if (!p || !n)
{
// Replace existing buffer (if any) with small internal buffer
this->disable_buffer();
buffer = NULL;
buffer_size = 0;
own_buffer = true;
this->enable_buffer();
}
else
{
// Replace existing buffer (if any) with external buffer
this->disable_buffer();
buffer = p;
buffer_size = n;
own_buffer = false;
this->enable_buffer();
}
return this;
}
// Write put area to gzipped file (i.e. ensures that put area is empty)
int
gzfilebuf::sync()
{
return traits_type::eq_int_type(this->overflow(), traits_type::eof()) ? -1 : 0;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
// Allocate internal buffer
void
gzfilebuf::enable_buffer()
{
// If internal buffer required, allocate one
if (own_buffer && !buffer)
{
// Check for buffered vs. "unbuffered"
if (buffer_size > 0)
{
// Allocate internal buffer
buffer = new char_type[buffer_size];
// Get area starts empty and will be expanded by underflow as need arises
this->setg(buffer, buffer, buffer);
// Setup entire internal buffer as put area.
// The one-past-end pointer actually points to the last element of the buffer,
// so that overflow(c) can safely add the extra character c to the sequence.
// These pointers remain in place for the duration of the buffer
this->setp(buffer, buffer + buffer_size - 1);
}
else
{
// Even in "unbuffered" case, (small?) get buffer is still required
buffer_size = SMALLBUFSIZE;
buffer = new char_type[buffer_size];
this->setg(buffer, buffer, buffer);
// "Unbuffered" means no put buffer
this->setp(0, 0);
}
}
else
{
// If buffer already allocated, reset buffer pointers just to make sure no
// stale chars are lying around
this->setg(buffer, buffer, buffer);
this->setp(buffer, buffer + buffer_size - 1);
}
}
// Destroy internal buffer
void
gzfilebuf::disable_buffer()
{
// If internal buffer exists, deallocate it
if (own_buffer && buffer)
{
// Preserve unbuffered status by zeroing size
if (!this->pbase())
buffer_size = 0;
delete[] buffer;
buffer = NULL;
this->setg(0, 0, 0);
this->setp(0, 0);
}
else
{
// Reset buffer pointers to initial state if external buffer exists
this->setg(buffer, buffer, buffer);
if (buffer)
this->setp(buffer, buffer + buffer_size - 1);
else
this->setp(0, 0);
}
}
/*****************************************************************************/
// Default constructor initializes stream buffer
gzifstream::gzifstream()
: std::istream(NULL), sb()
{ this->init(&sb); }
// Initialize stream buffer and open file
gzifstream::gzifstream(const char* name,
std::ios_base::openmode mode)
: std::istream(NULL), sb()
{
this->init(&sb);
this->open(name, mode);
}
// Initialize stream buffer and attach to file
gzifstream::gzifstream(int fd,
std::ios_base::openmode mode)
: std::istream(NULL), sb()
{
this->init(&sb);
this->attach(fd, mode);
}
// Open file and go into fail() state if unsuccessful
void
gzifstream::open(const char* name,
std::ios_base::openmode mode)
{
if (!sb.open(name, mode | std::ios_base::in))
this->setstate(std::ios_base::failbit);
else
this->clear();
}
// Attach to file and go into fail() state if unsuccessful
void
gzifstream::attach(int fd,
std::ios_base::openmode mode)
{
if (!sb.attach(fd, mode | std::ios_base::in))
this->setstate(std::ios_base::failbit);
else
this->clear();
}
// Close file
void
gzifstream::close()
{
if (!sb.close())
this->setstate(std::ios_base::failbit);
}
/*****************************************************************************/
// Default constructor initializes stream buffer
gzofstream::gzofstream()
: std::ostream(NULL), sb()
{ this->init(&sb); }
// Initialize stream buffer and open file
gzofstream::gzofstream(const char* name,
std::ios_base::openmode mode)
: std::ostream(NULL), sb()
{
this->init(&sb);
this->open(name, mode);
}
// Initialize stream buffer and attach to file
gzofstream::gzofstream(int fd,
std::ios_base::openmode mode)
: std::ostream(NULL), sb()
{
this->init(&sb);
this->attach(fd, mode);
}
// Open file and go into fail() state if unsuccessful
void
gzofstream::open(const char* name,
std::ios_base::openmode mode)
{
if (!sb.open(name, mode | std::ios_base::out))
this->setstate(std::ios_base::failbit);
else
this->clear();
}
// Attach to file and go into fail() state if unsuccessful
void
gzofstream::attach(int fd,
std::ios_base::openmode mode)
{
if (!sb.attach(fd, mode | std::ios_base::out))
this->setstate(std::ios_base::failbit);
else
this->clear();
}
// Close file
void
gzofstream::close()
{
if (!sb.close())
this->setstate(std::ios_base::failbit);
}
/*
* A C++ I/O streams interface to the zlib gz* functions
*
* by Ludwig Schwardt <schwardt@sun.ac.za>
* original version by Kevin Ruland <kevin@rodin.wustl.edu>
*
* This version is standard-compliant and compatible with gcc 3.x.
*/
#ifndef ZFSTREAM_H
#define ZFSTREAM_H
#include <istream> // not iostream, since we don't need cin/cout
#include <ostream>
#include "zlib.h"
/*****************************************************************************/
/**
* @brief Gzipped file stream buffer class.
*
* This class implements basic_filebuf for gzipped files. It doesn't yet support
* seeking (allowed by zlib but slow/limited), putback and read/write access
* (tricky). Otherwise, it attempts to be a drop-in replacement for the standard
* file streambuf.
*/
class gzfilebuf : public std::streambuf
{
public:
// Default constructor.
gzfilebuf();
// Destructor.
virtual
~gzfilebuf();
/**
* @brief Set compression level and strategy on the fly.
* @param comp_level Compression level (see zlib.h for allowed values)
* @param comp_strategy Compression strategy (see zlib.h for allowed values)
* @return Z_OK on success, Z_STREAM_ERROR otherwise.
*
* Unfortunately, these parameters cannot be modified separately, as the
* previous zfstream version assumed. Since the strategy is seldom changed,
* it can default and setcompression(level) then becomes like the old
* setcompressionlevel(level).
*/
int
setcompression(int comp_level,
int comp_strategy = Z_DEFAULT_STRATEGY);
/**
* @brief Check if file is open.
* @return True if file is open.
*/
bool
is_open() const { return (file != NULL); }
/**
* @brief Open gzipped file.
* @param name File name.
* @param mode Open mode flags.
* @return @c this on success, NULL on failure.
*/
gzfilebuf*
open(const char* name,
std::ios_base::openmode mode);
/**
* @brief Attach to already open gzipped file.
* @param fd File descriptor.
* @param mode Open mode flags.
* @return @c this on success, NULL on failure.
*/
gzfilebuf*
attach(int fd,
std::ios_base::openmode mode);
/**
* @brief Close gzipped file.
* @return @c this on success, NULL on failure.
*/
gzfilebuf*
close();
protected:
/**
* @brief Convert ios open mode int to mode string used by zlib.
* @return True if valid mode flag combination.
*/
bool
open_mode(std::ios_base::openmode mode,
char* c_mode) const;
/**
* @brief Number of characters available in stream buffer.
* @return Number of characters.
*
* This indicates number of characters in get area of stream buffer.
* These characters can be read without accessing the gzipped file.
*/
virtual std::streamsize
showmanyc();
/**
* @brief Fill get area from gzipped file.
* @return First character in get area on success, EOF on error.
*
* This actually reads characters from gzipped file to stream
* buffer. Always buffered.
*/
virtual int_type
underflow();
/**
* @brief Write put area to gzipped file.
* @param c Extra character to add to buffer contents.
* @return Non-EOF on success, EOF on error.
*
* This actually writes characters in stream buffer to
* gzipped file. With unbuffered output this is done one
* character at a time.
*/
virtual int_type
overflow(int_type c = traits_type::eof());
/**
* @brief Installs external stream buffer.
* @param p Pointer to char buffer.
* @param n Size of external buffer.
* @return @c this on success, NULL on failure.
*
* Call setbuf(0,0) to enable unbuffered output.
*/
virtual std::streambuf*
setbuf(char_type* p,
std::streamsize n);
/**
* @brief Flush stream buffer to file.
* @return 0 on success, -1 on error.
*
* This calls underflow(EOF) to do the job.
*/
virtual int
sync();
//
// Some future enhancements
//
// virtual int_type uflow();
// virtual int_type pbackfail(int_type c = traits_type::eof());
// virtual pos_type
// seekoff(off_type off,
// std::ios_base::seekdir way,
// std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
// virtual pos_type
// seekpos(pos_type sp,
// std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
private:
/**
* @brief Allocate internal buffer.
*
* This function is safe to call multiple times. It will ensure
* that a proper internal buffer exists if it is required. If the
* buffer already exists or is external, the buffer pointers will be
* reset to their original state.
*/
void
enable_buffer();
/**
* @brief Destroy internal buffer.
*
* This function is safe to call multiple times. It will ensure
* that the internal buffer is deallocated if it exists. In any
* case, it will also reset the buffer pointers.
*/
void
disable_buffer();
/**
* Underlying file pointer.
*/
gzFile file;
/**
* Mode in which file was opened.
*/
std::ios_base::openmode io_mode;
/**
* @brief True if this object owns file descriptor.
*
* This makes the class responsible for closing the file
* upon destruction.
*/
bool own_fd;
/**
* @brief Stream buffer.
*
* For simplicity this remains allocated on the free store for the
* entire life span of the gzfilebuf object, unless replaced by setbuf.
*/
char_type* buffer;
/**
* @brief Stream buffer size.
*
* Defaults to system default buffer size (typically 8192 bytes).
* Modified by setbuf.
*/
std::streamsize buffer_size;
/**
* @brief True if this object owns stream buffer.
*
* This makes the class responsible for deleting the buffer
* upon destruction.
*/
bool own_buffer;
};
/*****************************************************************************/
/**
* @brief Gzipped file input stream class.
*
* This class implements ifstream for gzipped files. Seeking and putback
* is not supported yet.
*/
class gzifstream : public std::istream
{
public:
// Default constructor
gzifstream();
/**
* @brief Construct stream on gzipped file to be opened.
* @param name File name.
* @param mode Open mode flags (forced to contain ios::in).
*/
explicit
gzifstream(const char* name,
std::ios_base::openmode mode = std::ios_base::in);
/**
* @brief Construct stream on already open gzipped file.
* @param fd File descriptor.
* @param mode Open mode flags (forced to contain ios::in).
*/
explicit
gzifstream(int fd,
std::ios_base::openmode mode = std::ios_base::in);
/**
* Obtain underlying stream buffer.
*/
gzfilebuf*
rdbuf() const
{ return const_cast<gzfilebuf*>(&sb); }
/**
* @brief Check if file is open.
* @return True if file is open.
*/
bool
is_open() { return sb.is_open(); }
/**
* @brief Open gzipped file.
* @param name File name.
* @param mode Open mode flags (forced to contain ios::in).
*
* Stream will be in state good() if file opens successfully;
* otherwise in state fail(). This differs from the behavior of
* ifstream, which never sets the state to good() and therefore
* won't allow you to reuse the stream for a second file unless
* you manually clear() the state. The choice is a matter of
* convenience.
*/
void
open(const char* name,
std::ios_base::openmode mode = std::ios_base::in);
/**
* @brief Attach to already open gzipped file.
* @param fd File descriptor.
* @param mode Open mode flags (forced to contain ios::in).
*
* Stream will be in state good() if attach succeeded; otherwise
* in state fail().
*/
void
attach(int fd,
std::ios_base::openmode mode = std::ios_base::in);
/**
* @brief Close gzipped file.
*
* Stream will be in state fail() if close failed.
*/
void
close();
private:
/**
* Underlying stream buffer.
*/
gzfilebuf sb;
};
/*****************************************************************************/
/**
* @brief Gzipped file output stream class.
*
* This class implements ofstream for gzipped files. Seeking and putback
* is not supported yet.
*/
class gzofstream : public std::ostream
{
public:
// Default constructor
gzofstream();
/**
* @brief Construct stream on gzipped file to be opened.
* @param name File name.
* @param mode Open mode flags (forced to contain ios::out).
*/
explicit
gzofstream(const char* name,
std::ios_base::openmode mode = std::ios_base::out);
/**
* @brief Construct stream on already open gzipped file.
* @param fd File descriptor.
* @param mode Open mode flags (forced to contain ios::out).
*/
explicit
gzofstream(int fd,
std::ios_base::openmode mode = std::ios_base::out);
/**
* Obtain underlying stream buffer.
*/
gzfilebuf*
rdbuf() const
{ return const_cast<gzfilebuf*>(&sb); }
/**
* @brief Check if file is open.
* @return True if file is open.
*/
bool
is_open() { return sb.is_open(); }
/**
* @brief Open gzipped file.
* @param name File name.
* @param mode Open mode flags (forced to contain ios::out).
*
* Stream will be in state good() if file opens successfully;
* otherwise in state fail(). This differs from the behavior of
* ofstream, which never sets the state to good() and therefore
* won't allow you to reuse the stream for a second file unless
* you manually clear() the state. The choice is a matter of
* convenience.
*/
void
open(const char* name,
std::ios_base::openmode mode = std::ios_base::out);
/**
* @brief Attach to already open gzipped file.
* @param fd File descriptor.
* @param mode Open mode flags (forced to contain ios::out).
*
* Stream will be in state good() if attach succeeded; otherwise
* in state fail().
*/
void
attach(int fd,
std::ios_base::openmode mode = std::ios_base::out);
/**
* @brief Close gzipped file.
*
* Stream will be in state fail() if close failed.
*/
void
close();
private:
/**
* Underlying stream buffer.
*/
gzfilebuf sb;
};
/*****************************************************************************/
/**
* @brief Gzipped file output stream manipulator class.
*
* This class defines a two-argument manipulator for gzofstream. It is used
* as base for the setcompression(int,int) manipulator.
*/
template<typename T1, typename T2>
class gzomanip2
{
public:
// Allows insertor to peek at internals
template <typename Ta, typename Tb>
friend gzofstream&
operator<<(gzofstream&,
const gzomanip2<Ta,Tb>&);
// Constructor
gzomanip2(gzofstream& (*f)(gzofstream&, T1, T2),
T1 v1,
T2 v2);
private:
// Underlying manipulator function
gzofstream&
(*func)(gzofstream&, T1, T2);
// Arguments for manipulator function
T1 val1;
T2 val2;
};
/*****************************************************************************/
// Manipulator function thunks through to stream buffer
inline gzofstream&
setcompression(gzofstream &gzs, int l, int s = Z_DEFAULT_STRATEGY)
{
(gzs.rdbuf())->setcompression(l, s);
return gzs;
}
// Manipulator constructor stores arguments
template<typename T1, typename T2>
inline
gzomanip2<T1,T2>::gzomanip2(gzofstream &(*f)(gzofstream &, T1, T2),
T1 v1,
T2 v2)
: func(f), val1(v1), val2(v2)
{ }
// Insertor applies underlying manipulator function to stream
template<typename T1, typename T2>
inline gzofstream&
operator<<(gzofstream& s, const gzomanip2<T1,T2>& m)
{ return (*m.func)(s, m.val1, m.val2); }
// Insert this onto stream to simplify setting of compression level
inline gzomanip2<int,int>
setcompression(int l, int s = Z_DEFAULT_STRATEGY)
{ return gzomanip2<int,int>(&setcompression, l, s); }
#endif // ZFSTREAM_H
Change in 0.21: (10 Mar 03)
- bug fixes
Change in 0.17: (27 Jan 02)
- bug fixes
Change in 0.16: (19 Jan 02)
- Support of ioapi for virtualize zip file access
Change in 0.15: (19 Mar 98)
- fix memory leak in minizip.c
Change in 0.14: (10 Mar 98)
- fix bugs in minizip.c sample for zipping big file
- fix problem in month in date handling
- fix bug in unzlocal_GetCurrentFileInfoInternal in unzip.c for
comment handling
Change in 0.13: (6 Mar 98)
- fix bugs in zip.c
- add real minizip sample
Change in 0.12: (4 Mar 98)
- add zip.c and zip.h for creates .zip file
- fix change_file_date in miniunz.c for Unix (Jean-loup Gailly)
- fix miniunz.c for file without specific record for directory
Change in 0.11: (3 Mar 98)
- fix bug in unzGetCurrentFileInfo for get extra field and comment
- enhance miniunz sample, remove the bad unztst.c sample
Change in 0.10: (2 Mar 98)
- fix bug in unzReadCurrentFile
- rename unzip* to unz* function and structure
- remove Windows-like hungary notation variable name
- modify some structure in unzip.h
- add somes comment in source
- remove unzipGetcCurrentFile function
- replace ZUNZEXPORT by ZEXPORT
- add unzGetLocalExtrafield for get the local extrafield info
- add a new sample, miniunz.c
Change in 0.4: (25 Feb 98)
- suppress the type unzipFileInZip.
Only on file in the zipfile can be open at the same time
- fix somes typo in code
- added tm_unz structure in unzip_file_info (date/time in readable format)
Change in 0.22: (19 May 03)
- crypting support (unless you define NOCRYPT)
- append file in existing zipfile
Change in 0.21: (10 Mar 03)
- bug fixes
Change in 0.17: (27 Jan 02)
- bug fixes
Change in 0.16: (19 Jan 02)
- Support of ioapi for virtualize zip file access
Change in 0.15: (19 Mar 98)
- fix memory leak in minizip.c
Change in 0.14: (10 Mar 98)
- fix bugs in minizip.c sample for zipping big file
- fix problem in month in date handling
- fix bug in unzlocal_GetCurrentFileInfoInternal in unzip.c for
comment handling
Change in 0.13: (6 Mar 98)
- fix bugs in zip.c
- add real minizip sample
Change in 0.12: (4 Mar 98)
- add zip.c and zip.h for creates .zip file
- fix change_file_date in miniunz.c for Unix (Jean-loup Gailly)
- fix miniunz.c for file without specific record for directory
Change in 0.11: (3 Mar 98)
- fix bug in unzGetCurrentFileInfo for get extra field and comment
- enhance miniunz sample, remove the bad unztst.c sample
Change in 0.10: (2 Mar 98)
- fix bug in unzReadCurrentFile
- rename unzip* to unz* function and structure
- remove Windows-like hungary notation variable name
- modify some structure in unzip.h
- add somes comment in source
- remove unzipGetcCurrentFile function
- replace ZUNZEXPORT by ZEXPORT
- add unzGetLocalExtrafield for get the local extrafield info
- add a new sample, miniunz.c
Change in 0.4: (25 Feb 98)
- suppress the type unzipFileInZip.
Only on file in the zipfile can be open at the same time
- fix somes typo in code
- added tm_unz structure in unzip_file_info (date/time in readable format)
CC=cc
CFLAGS=-O -I../..
UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a
ZIP_OBJS = minizip.o zip.o ioapi.o ../../libz.a
.c.o:
$(CC) -c $(CFLAGS) $*.c
all: miniunz minizip
miniunz: $(UNZ_OBJS)
$(CC) $(CFLAGS) -o $@ $(UNZ_OBJS)
minizip: $(ZIP_OBJS)
$(CC) $(CFLAGS) -o $@ $(ZIP_OBJS)
test: miniunz minizip
./minizip test readme.txt
./miniunz -l test.zip
mv readme.txt readme.old
./miniunz test.zip
clean:
/bin/rm -f *.o *~ minizip miniunz
CC=cc
CFLAGS=-O -I../..
UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a
ZIP_OBJS = minizip.o zip.o ioapi.o ../../libz.a
.c.o:
$(CC) -c $(CFLAGS) $*.c
all: miniunz minizip
miniunz: $(UNZ_OBJS)
$(CC) $(CFLAGS) -o $@ $(UNZ_OBJS)
minizip: $(ZIP_OBJS)
$(CC) $(CFLAGS) -o $@ $(ZIP_OBJS)
test: miniunz minizip
./minizip test readme.txt
./miniunz -l test.zip
mv readme.txt readme.old
./miniunz test.zip
clean:
/bin/rm -f *.o *~ minizip miniunz
#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
/***********************************************************************
* Return the next byte in the pseudo-random sequence
*/
static int decrypt_byte(unsigned long* pkeys, const unsigned long* pcrc_32_tab)
{
unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an
* unpredictable manner on 16-bit systems; not a problem
* with any known compiler so far, though */
temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2;
return (int)(((temp * (temp ^ 1)) >> 8) & 0xff);
}
/***********************************************************************
* Update the encryption keys with the next byte of plain text
*/
static int update_keys(unsigned long* pkeys,const unsigned long* pcrc_32_tab,int c)
{
(*(pkeys+0)) = CRC32((*(pkeys+0)), c);
(*(pkeys+1)) += (*(pkeys+0)) & 0xff;
(*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
{
register int keyshift = (int)((*(pkeys+1)) >> 24);
(*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift);
}
return c;
}
/***********************************************************************
* Initialize the encryption keys and the random header according to
* the given password.
*/
static void init_keys(const char* passwd,unsigned long* pkeys,const unsigned long* pcrc_32_tab)
{
*(pkeys+0) = 305419896L;
*(pkeys+1) = 591751049L;
*(pkeys+2) = 878082192L;
while (*passwd != '\0') {
update_keys(pkeys,pcrc_32_tab,(int)*passwd);
passwd++;
}
}
#define zdecode(pkeys,pcrc_32_tab,c) \
(update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))
#define zencode(pkeys,pcrc_32_tab,c,t) \
(t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c))
#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED
#define RAND_HEAD_LEN 12
/* "last resort" source for second part of crypt seed pattern */
# ifndef ZCR_SEED2
# define ZCR_SEED2 (unsigned long)3141592654L /* use PI as default pattern */
# endif
static int crypthead(passwd, buf, bufSize, pkeys, pcrc_32_tab, crcForCrypting)
const char *passwd; /* password string */
unsigned char *buf; /* where to write header */
int bufSize;
unsigned long* pkeys;
const unsigned long* pcrc_32_tab;
unsigned long crcForCrypting;
{
int n; /* index in random header */
int t; /* temporary */
int c; /* random byte */
unsigned char header[RAND_HEAD_LEN-2]; /* random header */
static unsigned calls = 0; /* ensure different random header each time */
if (bufSize<RAND_HEAD_LEN)
return 0;
/* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
* output of rand() to get less predictability, since rand() is
* often poorly implemented.
*/
if (++calls == 1)
{
srand((unsigned)(time(NULL) ^ ZCR_SEED2));
}
init_keys(passwd, pkeys, pcrc_32_tab);
for (n = 0; n < RAND_HEAD_LEN-2; n++)
{
c = (rand() >> 7) & 0xff;
header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t);
}
/* Encrypt random header (last two bytes is high word of crc) */
init_keys(passwd, pkeys, pcrc_32_tab);
for (n = 0; n < RAND_HEAD_LEN-2; n++)
{
buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t);
}
buf[n++] = zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t);
buf[n++] = zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t);
return n;
}
#endif
#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
/***********************************************************************
* Return the next byte in the pseudo-random sequence
*/
static int decrypt_byte(unsigned long* pkeys, const unsigned long* pcrc_32_tab)
{
unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an
* unpredictable manner on 16-bit systems; not a problem
* with any known compiler so far, though */
temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2;
return (int)(((temp * (temp ^ 1)) >> 8) & 0xff);
}
/***********************************************************************
* Update the encryption keys with the next byte of plain text
*/
static int update_keys(unsigned long* pkeys,const unsigned long* pcrc_32_tab,int c)
{
(*(pkeys+0)) = CRC32((*(pkeys+0)), c);
(*(pkeys+1)) += (*(pkeys+0)) & 0xff;
(*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
{
register int keyshift = (int)((*(pkeys+1)) >> 24);
(*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift);
}
return c;
}
/***********************************************************************
* Initialize the encryption keys and the random header according to
* the given password.
*/
static void init_keys(const char* passwd,unsigned long* pkeys,const unsigned long* pcrc_32_tab)
{
*(pkeys+0) = 305419896L;
*(pkeys+1) = 591751049L;
*(pkeys+2) = 878082192L;
while (*passwd != '\0') {
update_keys(pkeys,pcrc_32_tab,(int)*passwd);
passwd++;
}
}
#define zdecode(pkeys,pcrc_32_tab,c) \
(update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))
#define zencode(pkeys,pcrc_32_tab,c,t) \
(t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c))
#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED
#define RAND_HEAD_LEN 12
/* "last resort" source for second part of crypt seed pattern */
# ifndef ZCR_SEED2
# define ZCR_SEED2 (unsigned long)3141592654L /* use PI as default pattern */
# endif
static int crypthead(passwd, buf, bufSize, pkeys, pcrc_32_tab, crcForCrypting)
const char *passwd; /* password string */
unsigned char *buf; /* where to write header */
int bufSize;
unsigned long* pkeys;
const unsigned long* pcrc_32_tab;
unsigned long crcForCrypting;
{
int n; /* index in random header */
int t; /* temporary */
int c; /* random byte */
unsigned char header[RAND_HEAD_LEN-2]; /* random header */
static unsigned calls = 0; /* ensure different random header each time */
if (bufSize<RAND_HEAD_LEN)
return 0;
/* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
* output of rand() to get less predictability, since rand() is
* often poorly implemented.
*/
if (++calls == 1)
{
srand((unsigned)(time(NULL) ^ ZCR_SEED2));
}
init_keys(passwd, pkeys, pcrc_32_tab);
for (n = 0; n < RAND_HEAD_LEN-2; n++)
{
c = (rand() >> 7) & 0xff;
header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t);
}
/* Encrypt random header (last two bytes is high word of crc) */
init_keys(passwd, pkeys, pcrc_32_tab);
for (n = 0; n < RAND_HEAD_LEN-2; n++)
{
buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t);
}
buf[n++] = zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t);
buf[n++] = zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t);
return n;
}
#endif
/* ioapi.c -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
Version 0.21, March 10th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "ioapi.h"
/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif
#ifndef SEEK_END
#define SEEK_END 2
#endif
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
voidpf ZCALLBACK fopen_file_func OF((
voidpf opaque,
const char* filename,
int mode));
uLong ZCALLBACK fread_file_func OF((
voidpf opaque,
voidpf stream,
void* buf,
uLong size));
uLong ZCALLBACK fwrite_file_func OF((
voidpf opaque,
voidpf stream,
const void* buf,
uLong size));
long ZCALLBACK ftell_file_func OF((
voidpf opaque,
voidpf stream));
long ZCALLBACK fseek_file_func OF((
voidpf opaque,
voidpf stream,
uLong offset,
int origin));
int ZCALLBACK fclose_file_func OF((
voidpf opaque,
voidpf stream));
int ZCALLBACK ferror_file_func OF((
voidpf opaque,
voidpf stream));
voidpf ZCALLBACK fopen_file_func (opaque, filename, mode)
voidpf opaque;
const char* filename;
int mode;
{
FILE* file = NULL;
const char* mode_fopen = NULL;
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
mode_fopen = "rb";
else
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
mode_fopen = "r+b";
else
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
mode_fopen = "wb";
if ((filename!=NULL) && (mode_fopen != NULL))
file = fopen(filename, mode_fopen);
return file;
}
uLong ZCALLBACK fread_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
void* buf;
uLong size;
{
uLong ret;
ret = fread(buf, 1, (size_t)size, (FILE *)stream);
return ret;
}
uLong ZCALLBACK fwrite_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
const void* buf;
uLong size;
{
uLong ret;
ret = fwrite(buf, 1, (size_t)size, (FILE *)stream);
return ret;
}
long ZCALLBACK ftell_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
long ret;
ret = ftell((FILE *)stream);
return ret;
}
long ZCALLBACK fseek_file_func (opaque, stream, offset, origin)
voidpf opaque;
voidpf stream;
uLong offset;
int origin;
{
int fseek_origin=0;
long ret;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
fseek_origin = SEEK_CUR;
break;
case ZLIB_FILEFUNC_SEEK_END :
fseek_origin = SEEK_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
fseek_origin = SEEK_SET;
break;
default: return -1;
}
ret = 0;
fseek((FILE *)stream, offset, fseek_origin);
return ret;
}
int ZCALLBACK fclose_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
int ret;
ret = fclose((FILE *)stream);
return ret;
}
int ZCALLBACK ferror_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
int ret;
ret = ferror((FILE *)stream);
return ret;
}
void fill_fopen_filefunc (pzlib_filefunc_def)
zlib_filefunc_def* pzlib_filefunc_def;
{
pzlib_filefunc_def->zopen_file = fopen_file_func;
pzlib_filefunc_def->zread_file = fread_file_func;
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
pzlib_filefunc_def->ztell_file = ftell_file_func;
pzlib_filefunc_def->zseek_file = fseek_file_func;
pzlib_filefunc_def->zclose_file = fclose_file_func;
pzlib_filefunc_def->zerror_file = ferror_file_func;
pzlib_filefunc_def->opaque = NULL;
}
/* ioapi.c -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
Version 0.22, May 19th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "ioapi.h"
/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif
#ifndef SEEK_END
#define SEEK_END 2
#endif
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
voidpf ZCALLBACK fopen_file_func OF((
voidpf opaque,
const char* filename,
int mode));
uLong ZCALLBACK fread_file_func OF((
voidpf opaque,
voidpf stream,
void* buf,
uLong size));
uLong ZCALLBACK fwrite_file_func OF((
voidpf opaque,
voidpf stream,
const void* buf,
uLong size));
long ZCALLBACK ftell_file_func OF((
voidpf opaque,
voidpf stream));
long ZCALLBACK fseek_file_func OF((
voidpf opaque,
voidpf stream,
uLong offset,
int origin));
int ZCALLBACK fclose_file_func OF((
voidpf opaque,
voidpf stream));
int ZCALLBACK ferror_file_func OF((
voidpf opaque,
voidpf stream));
voidpf ZCALLBACK fopen_file_func (opaque, filename, mode)
voidpf opaque;
const char* filename;
int mode;
{
FILE* file = NULL;
const char* mode_fopen = NULL;
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
mode_fopen = "rb";
else
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
mode_fopen = "r+b";
else
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
mode_fopen = "wb";
if ((filename!=NULL) && (mode_fopen != NULL))
file = fopen(filename, mode_fopen);
return file;
}
uLong ZCALLBACK fread_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
void* buf;
uLong size;
{
uLong ret;
ret = fread(buf, 1, (size_t)size, (FILE *)stream);
return ret;
}
uLong ZCALLBACK fwrite_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
const void* buf;
uLong size;
{
uLong ret;
ret = fwrite(buf, 1, (size_t)size, (FILE *)stream);
return ret;
}
long ZCALLBACK ftell_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
long ret;
ret = ftell((FILE *)stream);
return ret;
}
long ZCALLBACK fseek_file_func (opaque, stream, offset, origin)
voidpf opaque;
voidpf stream;
uLong offset;
int origin;
{
int fseek_origin=0;
long ret;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
fseek_origin = SEEK_CUR;
break;
case ZLIB_FILEFUNC_SEEK_END :
fseek_origin = SEEK_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
fseek_origin = SEEK_SET;
break;
default: return -1;
}
ret = 0;
fseek((FILE *)stream, offset, fseek_origin);
return ret;
}
int ZCALLBACK fclose_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
int ret;
ret = fclose((FILE *)stream);
return ret;
}
int ZCALLBACK ferror_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
int ret;
ret = ferror((FILE *)stream);
return ret;
}
void fill_fopen_filefunc (pzlib_filefunc_def)
zlib_filefunc_def* pzlib_filefunc_def;
{
pzlib_filefunc_def->zopen_file = fopen_file_func;
pzlib_filefunc_def->zread_file = fread_file_func;
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
pzlib_filefunc_def->ztell_file = ftell_file_func;
pzlib_filefunc_def->zseek_file = fseek_file_func;
pzlib_filefunc_def->zclose_file = fclose_file_func;
pzlib_filefunc_def->zerror_file = ferror_file_func;
pzlib_filefunc_def->opaque = NULL;
}
/* ioapi.h -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
Version 0.21, March 10th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#ifndef _ZLIBIOAPI_H
#define _ZLIBIOAPI_H
#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)
#define ZLIB_FILEFUNC_SEEK_SET (0)
#define ZLIB_FILEFUNC_MODE_READ (1)
#define ZLIB_FILEFUNC_MODE_WRITE (2)
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
#define ZLIB_FILEFUNC_MODE_EXISTING (4)
#define ZLIB_FILEFUNC_MODE_CREATE (8)
#ifndef ZCALLBACK
#if (defined(WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
#define ZCALLBACK CALLBACK
#else
#define ZCALLBACK
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef voidpf (ZCALLBACK *open_file_func) OF((voidpf opaque, const char* filename, int mode));
typedef uLong (ZCALLBACK *read_file_func) OF((voidpf opaque, voidpf stream, void* buf, uLong size));
typedef uLong (ZCALLBACK *write_file_func) OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
typedef long (ZCALLBACK *tell_file_func) OF((voidpf opaque, voidpf stream));
typedef long (ZCALLBACK *seek_file_func) OF((voidpf opaque, voidpf stream, uLong offset, int origin));
typedef int (ZCALLBACK *close_file_func) OF((voidpf opaque, voidpf stream));
typedef int (ZCALLBACK *testerror_file_func) OF((voidpf opaque, voidpf stream));
typedef struct zlib_filefunc_def_s
{
open_file_func zopen_file;
read_file_func zread_file;
write_file_func zwrite_file;
tell_file_func ztell_file;
seek_file_func zseek_file;
close_file_func zclose_file;
testerror_file_func zerror_file;
voidpf opaque;
} zlib_filefunc_def;
void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
#define ZREAD(filefunc,filestream,buf,size) ((*((filefunc).zread_file))((filefunc).opaque,filestream,buf,size))
#define ZWRITE(filefunc,filestream,buf,size) ((*((filefunc).zwrite_file))((filefunc).opaque,filestream,buf,size))
#define ZTELL(filefunc,filestream) ((*((filefunc).ztell_file))((filefunc).opaque,filestream))
#define ZSEEK(filefunc,filestream,pos,mode) ((*((filefunc).zseek_file))((filefunc).opaque,filestream,pos,mode))
#define ZCLOSE(filefunc,filestream) ((*((filefunc).zclose_file))((filefunc).opaque,filestream))
#define ZERROR(filefunc,filestream) ((*((filefunc).zerror_file))((filefunc).opaque,filestream))
#ifdef __cplusplus
}
#endif
#endif
/* ioapi.h -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
Version 0.22, May 19th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#ifndef _ZLIBIOAPI_H
#define _ZLIBIOAPI_H
#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)
#define ZLIB_FILEFUNC_SEEK_SET (0)
#define ZLIB_FILEFUNC_MODE_READ (1)
#define ZLIB_FILEFUNC_MODE_WRITE (2)
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
#define ZLIB_FILEFUNC_MODE_EXISTING (4)
#define ZLIB_FILEFUNC_MODE_CREATE (8)
#ifndef ZCALLBACK
#if (defined(WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
#define ZCALLBACK CALLBACK
#else
#define ZCALLBACK
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef voidpf (ZCALLBACK *open_file_func) OF((voidpf opaque, const char* filename, int mode));
typedef uLong (ZCALLBACK *read_file_func) OF((voidpf opaque, voidpf stream, void* buf, uLong size));
typedef uLong (ZCALLBACK *write_file_func) OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
typedef long (ZCALLBACK *tell_file_func) OF((voidpf opaque, voidpf stream));
typedef long (ZCALLBACK *seek_file_func) OF((voidpf opaque, voidpf stream, uLong offset, int origin));
typedef int (ZCALLBACK *close_file_func) OF((voidpf opaque, voidpf stream));
typedef int (ZCALLBACK *testerror_file_func) OF((voidpf opaque, voidpf stream));
typedef struct zlib_filefunc_def_s
{
open_file_func zopen_file;
read_file_func zread_file;
write_file_func zwrite_file;
tell_file_func ztell_file;
seek_file_func zseek_file;
close_file_func zclose_file;
testerror_file_func zerror_file;
voidpf opaque;
} zlib_filefunc_def;
void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
#define ZREAD(filefunc,filestream,buf,size) ((*((filefunc).zread_file))((filefunc).opaque,filestream,buf,size))
#define ZWRITE(filefunc,filestream,buf,size) ((*((filefunc).zwrite_file))((filefunc).opaque,filestream,buf,size))
#define ZTELL(filefunc,filestream) ((*((filefunc).ztell_file))((filefunc).opaque,filestream))
#define ZSEEK(filefunc,filestream,pos,mode) ((*((filefunc).zseek_file))((filefunc).opaque,filestream,pos,mode))
#define ZCLOSE(filefunc,filestream) ((*((filefunc).zclose_file))((filefunc).opaque,filestream))
#define ZERROR(filefunc,filestream) ((*((filefunc).zerror_file))((filefunc).opaque,filestream))
#ifdef __cplusplus
}
#endif
#endif
/* iowin32.c -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
This IO API version uses the Win32 API (for Microsoft Windows)
Version 0.21, March 10th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#include <windows.h>
#include <stdlib.h>
#include "zlib.h"
#include "ioapi.h"
#include "iowin32.h"
#ifndef INVALID_HANDLE_VALUE
#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
#endif
#ifndef INVALID_SET_FILE_POINTER
#define INVALID_SET_FILE_POINTER ((DWORD)-1)
#endif
voidpf ZCALLBACK win32_open_file_func OF((
voidpf opaque,
const char* filename,
int mode));
uLong ZCALLBACK win32_read_file_func OF((
voidpf opaque,
voidpf stream,
void* buf,
uLong size));
uLong ZCALLBACK win32_write_file_func OF((
voidpf opaque,
voidpf stream,
const void* buf,
uLong size));
long ZCALLBACK win32_tell_file_func OF((
voidpf opaque,
voidpf stream));
long ZCALLBACK win32_seek_file_func OF((
voidpf opaque,
voidpf stream,
uLong offset,
int origin));
long ZCALLBACK win32_close_file_func OF((
voidpf opaque,
voidpf stream));
int ZCALLBACK win32_error_file_func OF((
voidpf opaque,
voidpf stream));
typedef struct
{
HANDLE hf;
int error;
} WIN32FILE_IOWIN;
voidpf ZCALLBACK win32_open_file_func (opaque, filename, mode)
voidpf opaque;
const char* filename;
int mode;
{
const char* mode_fopen = NULL;
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
HANDLE hFile = 0;
voidpf ret=NULL;
dwDesiredAccess = dwShareMode = dwFlagsAndAttributes = 0;
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
{
dwDesiredAccess = GENERIC_READ;
dwCreationDisposition = OPEN_EXISTING;
dwShareMode = FILE_SHARE_READ;
}
else
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
{
dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
dwCreationDisposition = OPEN_EXISTING;
}
else
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
{
dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
dwCreationDisposition = CREATE_ALWAYS;
}
if ((filename!=NULL) && (dwDesiredAccess != 0))
hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL,
dwCreationDisposition, dwFlagsAndAttributes, NULL);
if (hFile == INVALID_HANDLE_VALUE)
hFile = NULL;
if (hFile != NULL)
{
WIN32FILE_IOWIN w32fiow;
w32fiow.hf = hFile;
w32fiow.error = 0;
ret = malloc(sizeof(WIN32FILE_IOWIN));
if (ret==NULL)
CloseHandle(hFile);
else *((WIN32FILE_IOWIN*)ret) = w32fiow;
}
return ret;
}
uLong ZCALLBACK win32_read_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
void* buf;
uLong size;
{
uLong ret=0;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
if (!ReadFile(hFile, buf, size, &ret, NULL))
{
DWORD dwErr = GetLastError();
if (dwErr == ERROR_HANDLE_EOF)
dwErr = 0;
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
}
return ret;
}
uLong ZCALLBACK win32_write_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
const void* buf;
uLong size;
{
uLong ret=0;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile !=NULL)
if (!WriteFile(hFile, buf, size, &ret, NULL))
{
DWORD dwErr = GetLastError();
if (dwErr == ERROR_HANDLE_EOF)
dwErr = 0;
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
}
return ret;
}
long ZCALLBACK win32_tell_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
long ret=-1;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=(long)dwSet;
}
return ret;
}
long ZCALLBACK win32_seek_file_func (opaque, stream, offset, origin)
voidpf opaque;
voidpf stream;
uLong offset;
int origin;
{
DWORD dwMoveMethod=0xFFFFFFFF;
HANDLE hFile = NULL;
long ret=-1;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
dwMoveMethod = FILE_CURRENT;
break;
case ZLIB_FILEFUNC_SEEK_END :
dwMoveMethod = FILE_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
dwMoveMethod = FILE_BEGIN;
break;
default: return -1;
}
if (hFile != NULL)
{
DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=0;
}
return ret;
}
long ZCALLBACK win32_close_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
long ret=-1;
if (stream!=NULL)
{
HANDLE hFile;
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
CloseHandle(hFile);
ret=0;
}
free(stream);
}
return ret;
}
int ZCALLBACK win32_error_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
int ret=-1;
if (stream!=NULL)
{
ret = ((WIN32FILE_IOWIN*)stream) -> error;
}
return ret;
}
void fill_win32_filefunc (pzlib_filefunc_def)
zlib_filefunc_def* pzlib_filefunc_def;
{
pzlib_filefunc_def->zopen_file = win32_open_file_func;
pzlib_filefunc_def->zread_file = win32_read_file_func;
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
pzlib_filefunc_def->ztell_file = win32_tell_file_func;
pzlib_filefunc_def->zseek_file = win32_seek_file_func;
pzlib_filefunc_def->zclose_file = win32_close_file_func;
pzlib_filefunc_def->zerror_file = win32_error_file_func;
pzlib_filefunc_def->opaque=NULL;
}
/* iowin32.c -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
This IO API version uses the Win32 API (for Microsoft Windows)
Version 0.22, May 19th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#include <windows.h>
#include <stdlib.h>
#include "zlib.h"
#include "ioapi.h"
#include "iowin32.h"
#ifndef INVALID_HANDLE_VALUE
#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
#endif
#ifndef INVALID_SET_FILE_POINTER
#define INVALID_SET_FILE_POINTER ((DWORD)-1)
#endif
voidpf ZCALLBACK win32_open_file_func OF((
voidpf opaque,
const char* filename,
int mode));
uLong ZCALLBACK win32_read_file_func OF((
voidpf opaque,
voidpf stream,
void* buf,
uLong size));
uLong ZCALLBACK win32_write_file_func OF((
voidpf opaque,
voidpf stream,
const void* buf,
uLong size));
long ZCALLBACK win32_tell_file_func OF((
voidpf opaque,
voidpf stream));
long ZCALLBACK win32_seek_file_func OF((
voidpf opaque,
voidpf stream,
uLong offset,
int origin));
long ZCALLBACK win32_close_file_func OF((
voidpf opaque,
voidpf stream));
int ZCALLBACK win32_error_file_func OF((
voidpf opaque,
voidpf stream));
typedef struct
{
HANDLE hf;
int error;
} WIN32FILE_IOWIN;
voidpf ZCALLBACK win32_open_file_func (opaque, filename, mode)
voidpf opaque;
const char* filename;
int mode;
{
const char* mode_fopen = NULL;
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
HANDLE hFile = 0;
voidpf ret=NULL;
dwDesiredAccess = dwShareMode = dwFlagsAndAttributes = 0;
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
{
dwDesiredAccess = GENERIC_READ;
dwCreationDisposition = OPEN_EXISTING;
dwShareMode = FILE_SHARE_READ;
}
else
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
{
dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
dwCreationDisposition = OPEN_EXISTING;
}
else
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
{
dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
dwCreationDisposition = CREATE_ALWAYS;
}
if ((filename!=NULL) && (dwDesiredAccess != 0))
hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL,
dwCreationDisposition, dwFlagsAndAttributes, NULL);
if (hFile == INVALID_HANDLE_VALUE)
hFile = NULL;
if (hFile != NULL)
{
WIN32FILE_IOWIN w32fiow;
w32fiow.hf = hFile;
w32fiow.error = 0;
ret = malloc(sizeof(WIN32FILE_IOWIN));
if (ret==NULL)
CloseHandle(hFile);
else *((WIN32FILE_IOWIN*)ret) = w32fiow;
}
return ret;
}
uLong ZCALLBACK win32_read_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
void* buf;
uLong size;
{
uLong ret=0;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
if (!ReadFile(hFile, buf, size, &ret, NULL))
{
DWORD dwErr = GetLastError();
if (dwErr == ERROR_HANDLE_EOF)
dwErr = 0;
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
}
return ret;
}
uLong ZCALLBACK win32_write_file_func (opaque, stream, buf, size)
voidpf opaque;
voidpf stream;
const void* buf;
uLong size;
{
uLong ret=0;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile !=NULL)
if (!WriteFile(hFile, buf, size, &ret, NULL))
{
DWORD dwErr = GetLastError();
if (dwErr == ERROR_HANDLE_EOF)
dwErr = 0;
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
}
return ret;
}
long ZCALLBACK win32_tell_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
long ret=-1;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=(long)dwSet;
}
return ret;
}
long ZCALLBACK win32_seek_file_func (opaque, stream, offset, origin)
voidpf opaque;
voidpf stream;
uLong offset;
int origin;
{
DWORD dwMoveMethod=0xFFFFFFFF;
HANDLE hFile = NULL;
long ret=-1;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
dwMoveMethod = FILE_CURRENT;
break;
case ZLIB_FILEFUNC_SEEK_END :
dwMoveMethod = FILE_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
dwMoveMethod = FILE_BEGIN;
break;
default: return -1;
}
if (hFile != NULL)
{
DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=0;
}
return ret;
}
long ZCALLBACK win32_close_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
long ret=-1;
if (stream!=NULL)
{
HANDLE hFile;
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
CloseHandle(hFile);
ret=0;
}
free(stream);
}
return ret;
}
int ZCALLBACK win32_error_file_func (opaque, stream)
voidpf opaque;
voidpf stream;
{
int ret=-1;
if (stream!=NULL)
{
ret = ((WIN32FILE_IOWIN*)stream) -> error;
}
return ret;
}
void fill_win32_filefunc (pzlib_filefunc_def)
zlib_filefunc_def* pzlib_filefunc_def;
{
pzlib_filefunc_def->zopen_file = win32_open_file_func;
pzlib_filefunc_def->zread_file = win32_read_file_func;
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
pzlib_filefunc_def->ztell_file = win32_tell_file_func;
pzlib_filefunc_def->zseek_file = win32_seek_file_func;
pzlib_filefunc_def->zclose_file = win32_close_file_func;
pzlib_filefunc_def->zerror_file = win32_error_file_func;
pzlib_filefunc_def->opaque=NULL;
}
/* iowin32.h -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
This IO API version uses the Win32 API (for Microsoft Windows)
Version 0.21, March 10th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#ifdef __cplusplus
extern "C" {
#endif
void fill_win32_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
#ifdef __cplusplus
}
#endif
/* iowin32.h -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
This IO API version uses the Win32 API (for Microsoft Windows)
Version 0.22, May 19th, 2003
Copyright (C) 1998-2003 Gilles Vollant
*/
#ifdef __cplusplus
extern "C" {
#endif
void fill_win32_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
#ifdef __cplusplus
}
#endif
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/* zconf.h -- configuration of the zlib compression library
* Copyright (C) 1995-2003 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#ifndef _ZCONF_H
#define _ZCONF_H
/*
* If you *really* need a unique prefix for all types and library functions,
* compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
*/
#ifdef Z_PREFIX
# define deflateInit_ z_deflateInit_
# define deflate z_deflate
# define deflateEnd z_deflateEnd
# define inflateInit_ z_inflateInit_
# define inflate z_inflate
# define inflateEnd z_inflateEnd
# define deflateInit2_ z_deflateInit2_
# define deflateSetDictionary z_deflateSetDictionary
# define deflateCopy z_deflateCopy
# define deflateReset z_deflateReset
# define deflateParams z_deflateParams
# define deflateBound z_deflateBound
# define inflateInit2_ z_inflateInit2_
# define inflateSetDictionary z_inflateSetDictionary
# define inflateSync z_inflateSync
# define inflateSyncPoint z_inflateSyncPoint
# define inflateCopy z_inflateCopy
# define inflateReset z_inflateReset
# define compress z_compress
# define compress2 z_compress2
# define compressBound z_compressBound
# define uncompress z_uncompress
# define adler32 z_adler32
# define crc32 z_crc32
# define get_crc_table z_get_crc_table
# define Byte z_Byte
# define uInt z_uInt
# define uLong z_uLong
# define Bytef z_Bytef
# define charf z_charf
# define intf z_intf
# define uIntf z_uIntf
# define uLongf z_uLongf
# define voidpf z_voidpf
# define voidp z_voidp
#endif
#ifdef __STDC_VERSION__
# ifndef STDC
# define STDC
# endif
# if __STDC_VERSION__ >= 199901L
# ifndef STDC99
# define STDC99
# endif
# endif
#endif
#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
# define WIN32
#endif
#if defined(__GNUC__) || defined(WIN32) || defined(__386__) || defined(i386)
# ifndef __32BIT__
# define __32BIT__
# endif
#endif
#if defined(__MSDOS__) && !defined(MSDOS)
# define MSDOS
#endif
/*
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
* than 64k bytes at a time (needed on systems with 16-bit int).
*/
#if defined(MSDOS) && !defined(__32BIT__)
# define MAXSEG_64K
#endif
#ifdef MSDOS
# define UNALIGNED_OK
#endif
#if (defined(MSDOS) || defined(_WINDOWS) || defined(WIN32)) && !defined(STDC)
# define STDC
#endif
#if defined(__STDC__) || defined(__cplusplus) || defined(__OS2__)
# ifndef STDC
# define STDC
# endif
#endif
#if defined __HOS_AIX__
# ifndef STDC
# define STDC
# endif
#endif
#ifndef STDC
# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
# define const /* note: need a more gentle solution here */
# endif
#endif
/* Some Mac compilers merge all .h files incorrectly: */
#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__)
# define NO_DUMMY_DECL
#endif
/* Old Borland C incorrectly complains about missing returns: */
#if defined(__BORLANDC__) && (__BORLANDC__ < 0x460)
# define NEED_DUMMY_RETURN
#endif
#if defined(__TURBOC__) && !defined(__BORLANDC__)
# define NEED_DUMMY_RETURN
#endif
/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
# ifdef MAXSEG_64K
# define MAX_MEM_LEVEL 8
# else
# define MAX_MEM_LEVEL 9
# endif
#endif
/* Maximum value for windowBits in deflateInit2 and inflateInit2.
* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
* created by gzip. (Files created by minigzip can still be extracted by
* gzip.)
*/
#ifndef MAX_WBITS
# define MAX_WBITS 15 /* 32K LZ77 window */
#endif
/* The memory requirements for deflate are (in bytes):
(1 << (windowBits+2)) + (1 << (memLevel+9))
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
plus a few kilobytes for small objects. For example, if you want to reduce
the default memory requirements from 256K to 128K, compile with
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
Of course this will generally degrade compression (there's no free lunch).
The memory requirements for inflate are (in bytes) 1 << windowBits
that is, 32K for windowBits=15 (default value) plus a few kilobytes
for small objects.
*/
/* Type declarations */
#ifndef OF /* function prototypes */
# ifdef STDC
# define OF(args) args
# else
# define OF(args) ()
# endif
#endif
/*
* Microsoft Visual Studio define _vsnprintf but not vsnprintf
*/
#if !defined(STDC99) && !(defined(__TURBOC__) && __TURBOC__ >= 0x550) && !defined(VSNPRINTF_DEFINED)
# ifdef MSDOS
/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
but for now we just assume it doesn't. */
# define NO_vsnprintf
# endif
# ifdef WIN32
/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
# if !defined(vsnprintf) && !defined(__TURBOC__)
# define vsnprintf _vsnprintf
# endif
# endif
# ifdef __TURBOC__
# define NO_vsnprintf
# endif
#endif
/* The following definitions for FAR are needed only for MSDOS mixed
* model programming (small or medium model with some far allocations).
* This was tested only with MSC; for other MSDOS compilers you may have
* to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
* just define FAR to be empty.
*/
#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(__32BIT__)
/* MSC small or medium model */
# define SMALL_MEDIUM
# ifdef _MSC_VER
# define FAR _far
# else
# define FAR far
# endif
#endif
#if defined(__BORLANDC__) && (defined(__SMALL__) || defined(__MEDIUM__))
# ifndef __32BIT__
# define SMALL_MEDIUM
# define FAR _far
# endif
#endif
#if defined(WIN32) && (!defined(ZLIB_WIN32_NODLL)) && (!defined(ZLIB_DLL))
# define ZLIB_DLL
#endif
/* Compile with -DZLIB_DLL for Windows DLL support */
#if defined(ZLIB_DLL)
# if defined(_WINDOWS) || defined(WINDOWS) || defined(WIN32)
# ifndef WINAPIV
# ifdef FAR
# undef FAR
# endif
# include <windows.h>
# endif
# ifdef WIN32
# define ZEXPORT WINAPI
# define ZEXPORTVA WINAPIV
# else
# define ZEXPORT WINAPI _export
# define ZEXPORTVA FAR _cdecl _export
# endif
# endif
# if defined (__BORLANDC__)
# if (__BORLANDC__ >= 0x0500) && defined (WIN32)
# include <windows.h>
# define ZEXPORT __declspec(dllexport) WINAPI
# define ZEXPORTVA __declspec(dllexport) WINAPIV
# else
# if defined (_Windows) && defined (__DLL__)
# define ZEXPORT _export
# define ZEXPORTVA _export
# endif
# endif
# endif
#endif
#if defined (__BEOS__)
# if defined (ZLIB_DLL)
# define ZEXTERN extern __declspec(dllexport)
# else
# define ZEXTERN extern __declspec(dllimport)
# endif
#endif
#ifndef ZEXPORT
# define ZEXPORT
#endif
#ifndef ZEXPORTVA
# define ZEXPORTVA
#endif
#ifndef ZEXTERN
# define ZEXTERN extern
#endif
#ifndef FAR
# define FAR
#endif
#if !defined(__MACTYPES__)
typedef unsigned char Byte; /* 8 bits */
#endif
typedef unsigned int uInt; /* 16 bits or more */
typedef unsigned long uLong; /* 32 bits or more */
#ifdef SMALL_MEDIUM
/* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
# define Bytef Byte FAR
#else
typedef Byte FAR Bytef;
#endif
typedef char FAR charf;
typedef int FAR intf;
typedef uInt FAR uIntf;
typedef uLong FAR uLongf;
#ifdef STDC
typedef void const *voidpc;
typedef void FAR *voidpf;
typedef void *voidp;
#else
typedef Byte const *voidpc;
typedef Byte FAR *voidpf;
typedef Byte *voidp;
#endif
#if 0 /* HAVE_UNISTD_H -- this line is updated by ./configure */
# include <sys/types.h> /* for off_t */
# include <unistd.h> /* for SEEK_* and off_t */
# ifdef VMS
# include <unixio.h> /* for off_t */
# endif
# define z_off_t off_t
#endif
#ifndef SEEK_SET
# define SEEK_SET 0 /* Seek from beginning of file. */
# define SEEK_CUR 1 /* Seek from current position. */
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
#endif
#ifndef z_off_t
# define z_off_t long
#endif
/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
# pragma map(deflateInit_,"DEIN")
# pragma map(deflateInit2_,"DEIN2")
# pragma map(deflateEnd,"DEEND")
# pragma map(deflateBound,"DEBND")
# pragma map(inflateInit_,"ININ")
# pragma map(inflateInit2_,"ININ2")
# pragma map(inflateEnd,"INEND")
# pragma map(inflateSync,"INSY")
# pragma map(inflateSetDictionary,"INSEDI")
# pragma map(compressBound,"CMBND")
# pragma map(inflate_table,"INTABL")
# pragma map(inflate_fast,"INFA")
# pragma map(inflate_copyright,"INCOPY")
#endif
#endif /* _ZCONF_H */
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......@@ -14,4 +14,9 @@ open zlibvc.sln with Microsoft Visual C++ 7.0 (Visual Studio .net)
Note : You don't need recompile yourself. There is compiled .LIB in
http://www.winimage.com/zLibDll
http://www.winimage.com/zLibDll . See this page for more information
Gilles Vollant
info@winimage.com
......@@ -4,7 +4,7 @@ DESCRIPTION '"""zlib data compression library"""'
EXETYPE WINDOWS
VERSION 1.20
VERSION 1.21
CODE PRELOAD MOVEABLE DISCARDABLE
DATA PRELOAD MOVEABLE SINGLE
......
......@@ -3,8 +3,8 @@
#define IDR_VERSION1 1
IDR_VERSION1 VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE
FILEVERSION 1,2,0,0
PRODUCTVERSION 1,2,0,0
FILEVERSION 1,2,1,0
PRODUCTVERSION 1,2,1,0
FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
FILEFLAGS 0
FILEOS VOS_DOS_WINDOWS16
......@@ -18,7 +18,7 @@ BEGIN
BEGIN
VALUE "FileDescription", "zlib data compression library\0"
VALUE "FileVersion", "1.2.0\0"
VALUE "FileVersion", "1.2.1\0"
VALUE "InternalName", "zlib16\0"
VALUE "OriginalFilename", "zlib16.dll\0"
VALUE "ProductName", "ZLib16.DLL\0"
......
......@@ -2,8 +2,8 @@
#define IDR_VERSION1 1
IDR_VERSION1 VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE
FILEVERSION 1,2,0,0
PRODUCTVERSION 1,2,0,0
FILEVERSION 1,2,1,0
PRODUCTVERSION 1,2,1,0
FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
FILEFLAGS 0
FILEOS VOS_DOS_WINDOWS32
......@@ -17,7 +17,7 @@ BEGIN
BEGIN
VALUE "FileDescription", "zlib data compression library\0"
VALUE "FileVersion", "1.2.0.0\0"
VALUE "FileVersion", "1.2.1.0\0"
VALUE "InternalName", "zlib\0"
VALUE "OriginalFilename", "zlib.dll\0"
VALUE "ProductName", "ZLib.DLL\0"
......
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