Mercurial > hg > nginx-quic
view auto/lib/zlib/conf @ 4617:972642646f06
Rewrite: fixed escaping and possible segfault (ticket #162).
The following code resulted in incorrect escaping of uri and possible
segfault:
location / {
rewrite ^(.*) $1?c=$1;
return 200 "$uri";
}
If there were arguments in a rewrite's replacement string, and length was
actually calculated (due to duplicate captures as in the example above,
or variables present), the is_args flag was set and incorrectly copied
after length calculation. This resulted in escaping applied to the uri part
of the replacement, resulting in incorrect escaping. Additionally, buffer
was allocated without escaping expected, thus this also resulted in buffer
overrun and possible segfault.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 11 May 2012 13:19:22 +0000 |
parents | d620f497c50f |
children | 66d001c5378c |
line wrap: on
line source
# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ $ZLIB != NONE ]; then CORE_INCS="$CORE_INCS $ZLIB" case "$NGX_CC_NAME" in msvc* | owc* | bcc) LINK_DEPS="$LINK_DEPS $ZLIB/zlib.lib" CORE_LIBS="$CORE_LIBS $ZLIB/zlib.lib" ;; icc*) LINK_DEPS="$LINK_DEPS $ZLIB/libz.a" # to allow -ipo optimization we link with the *.o but not library CORE_LIBS="$CORE_LIBS $ZLIB/adler32.o" CORE_LIBS="$CORE_LIBS $ZLIB/crc32.o" CORE_LIBS="$CORE_LIBS $ZLIB/deflate.o" CORE_LIBS="$CORE_LIBS $ZLIB/trees.o" CORE_LIBS="$CORE_LIBS $ZLIB/zutil.o" CORE_LIBS="$CORE_LIBS $ZLIB/compress.o" if [ $ZLIB_ASM != NO ]; then CORE_LIBS="$CORE_LIBS $ZLIB/match.o" fi ;; *) LINK_DEPS="$LINK_DEPS $ZLIB/libz.a" CORE_LIBS="$CORE_LIBS $ZLIB/libz.a" #CORE_LIBS="$CORE_LIBS -L $ZLIB -lz" ;; esac else if [ "$NGX_PLATFORM" != win32 ]; then ZLIB=NO # FreeBSD, Solaris, Linux ngx_feature="zlib library" ngx_feature_name= ngx_feature_run=no ngx_feature_incs="#include <zlib.h>" ngx_feature_path= ngx_feature_libs="-lz" ngx_feature_test="z_stream z; deflate(&z, Z_NO_FLUSH)" . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS $ngx_feature_libs" ZLIB=YES ngx_found=no fi fi if [ $ZLIB != YES ]; then cat << END $0: error: the HTTP gzip module requires the zlib library. You can either disable the module by using --without-http_gzip_module option, or install the zlib library into the system, or build the zlib library statically from the source with nginx by using --with-zlib=<path> option. END exit 1 fi fi