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Add --disable-zlib configure option

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This commit is contained in:
Timothy Redaelli 2010-02-10 14:52:15 +01:00 • committed by Guus Sliepen
parent eeb505af36
commit ddb8cb0779
2 changed files with 46 additions and 28 deletions
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53
m4/zlib.m4
View file

@ -2,32 +2,37 @@ dnl Check to find the zlib headers/libraries
AC_DEFUN([tinc_ZLIB],
[
AC_ARG_WITH(zlib,
AS_HELP_STRING([--with-zlib=DIR], [zlib base directory, or:]),
[zlib="$withval"
CPPFLAGS="$CPPFLAGS -I$withval/include"
LDFLAGS="$LDFLAGS -L$withval/lib"]
)
AC_ARG_ENABLE([zlib],
AS_HELP_STRING([--disable-zlib], [disable zlib compression support]))
AS_IF([test "x$enable_zlib" != "xno"], [
AC_DEFINE(HAVE_ZLIB, 1, [have zlib compression support])
AC_ARG_WITH(zlib,
AS_HELP_STRING([--with-zlib=DIR], [zlib base directory, or:]),
[zlib="$withval"
CPPFLAGS="$CPPFLAGS -I$withval/include"
LDFLAGS="$LDFLAGS -L$withval/lib"]
)
AC_ARG_WITH(zlib-include,
AS_HELP_STRING([--with-zlib-include=DIR], [zlib headers directory]),
[zlib_include="$withval"
CPPFLAGS="$CPPFLAGS -I$withval"]
)
AC_ARG_WITH(zlib-include,
AS_HELP_STRING([--with-zlib-include=DIR], [zlib headers directory]),
[zlib_include="$withval"
CPPFLAGS="$CPPFLAGS -I$withval"]
)
AC_ARG_WITH(zlib-lib,
AS_HELP_STRING([--with-zlib-lib=DIR], [zlib library directory]),
[zlib_lib="$withval"
LDFLAGS="$LDFLAGS -L$withval"]
)
AC_ARG_WITH(zlib-lib,
AS_HELP_STRING([--with-zlib-lib=DIR], [zlib library directory]),
[zlib_lib="$withval"
LDFLAGS="$LDFLAGS -L$withval"]
)
AC_CHECK_HEADERS(zlib.h,
[],
[AC_MSG_ERROR("zlib header files not found."); break]
)
AC_CHECK_HEADERS(zlib.h,
[],
[AC_MSG_ERROR("zlib header files not found."); break]
)
AC_CHECK_LIB(z, compress2,
[LIBS="$LIBS -lz"],
[AC_MSG_ERROR("zlib libraries not found.")]
)
AC_CHECK_LIB(z, compress2,
[LIBS="$LIBS -lz"],
[AC_MSG_ERROR("zlib libraries not found.")]
)
])
])

21
src/net_packet.c
View file

@ -26,7 +26,9 @@
#include <openssl/pem.h>
#include <openssl/hmac.h>
#ifdef HAVE_ZLIB
#include <zlib.h>
#endif
#ifdef HAVE_LZO
#include LZO1X_H
@ -152,7 +154,10 @@ void mtu_probe_h(node_t *n, vpn_packet_t *packet, length_t len) {
}
static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t len, int level) {
if(level == 10) {
if(level == 0) {
memcpy(dest, source, len);
return len;
} else if(level == 10) {
#ifdef HAVE_LZO
lzo_uint lzolen = MAXSIZE;
lzo1x_1_compress(source, len, dest, &lzolen, lzo_wrkmem);
@ -161,10 +166,12 @@ static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t l
return -1;
#endif
} else if(level < 10) {
#ifdef HAVE_ZLIB
unsigned long destlen = MAXSIZE;
if(compress2(dest, &destlen, source, len, level) == Z_OK)
return destlen;
else
#endif
return -1;
} else {
#ifdef HAVE_LZO
@ -180,7 +187,10 @@ static length_t compress_packet(uint8_t *dest, const uint8_t *source, length_t l
}
static length_t uncompress_packet(uint8_t *dest, const uint8_t *source, length_t len, int level) {
if(level > 9) {
if(level == 0) {
memcpy(dest, source, len);
return len;
} else if(level > 9) {
#ifdef HAVE_LZO
lzo_uint lzolen = MAXSIZE;
if(lzo1x_decompress_safe(source, len, dest, &lzolen, NULL) == LZO_E_OK)
@ -188,14 +198,17 @@ static length_t uncompress_packet(uint8_t *dest, const uint8_t *source, length_t
else
#endif
return -1;
} else {
}
#ifdef HAVE_ZLIB
else {
unsigned long destlen = MAXSIZE;
if(uncompress(dest, &destlen, source, len) == Z_OK)
return destlen;
else
return -1;
}
#endif
return -1;
}