Mercurial > hg > nginx-quic
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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 | 4871a7dc12a9 |
children | 1f908d2dde8d |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ "$NGX_PLATFORM" != win32 ]; then ngx_feature="C compiler" ngx_feature_name= ngx_feature_run=yes ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test= . auto/feature if [ $ngx_found = no ]; then echo echo $0: error: C compiler $CC is not found echo exit 1 fi fi if [ "$CC" = cl ]; then if `$NGX_WINE $CC -v 2>&1 \ | grep '^Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16' \ >/dev/null 2>&1`; then NGX_CC_NAME=msvc10 echo " + using Microsoft Visual C++ 10 compiler" else if `$NGX_WINE $CC -v 2>&1 \ | grep '^Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14' \ >/dev/null 2>&1`; then NGX_CC_NAME=msvc8 echo " + using Microsoft Visual C++ 8 compiler" else if `$NGX_WINE $CC -v 2>&1 \ | grep '^Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13' \ >/dev/null 2>&1`; then NGX_CC_NAME=msvc7 echo " + using Microsoft Visual C++ 7 compiler" else NGX_CC_NAME=msvc echo " + using Microsoft Visual C++ compiler" fi fi fi else if [ "$CC" = wcl386 ]; then NGX_CC_NAME=owc echo " + using Open Watcom C compiler" else if [ "$CC" = bcc32 ]; then NGX_CC_NAME=bcc echo " + using Borland C++ compiler" else if `$CC -V 2>&1 | grep '^Intel(R) C' >/dev/null 2>&1`; then NGX_CC_NAME=icc echo " + using Intel C++ compiler" else if `$CC -v 2>&1 | grep 'gcc version' >/dev/null 2>&1`; then NGX_CC_NAME=gcc echo " + using GNU C compiler" else if `$CC -V 2>&1 | grep 'Sun C' >/dev/null 2>&1`; then NGX_CC_NAME=sunc echo " + using Sun C compiler" else if `$CC -V 2>&1 | grep '^Compaq C' >/dev/null 2>&1`; then NGX_CC_NAME=ccc echo " + using Compaq C compiler" else if `$CC -V 2>&1 | grep '^aCC: ' >/dev/null 2>&1`; then NGX_CC_NAME=acc echo " + using HP aC++ compiler" else NGX_CC_NAME=unknown fi # acc fi # ccc fi # sunc fi # icc fi # gcc fi # bcc fi # owc fi # msvc