Mercurial > hg > nginx-quic
view auto/lib/perl/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 | fac1cc762969 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo "checking for perl" NGX_PERL_VER=`$NGX_PERL -v 2>&1 | grep '^This is perl' 2>&1 \ | sed -e 's/^This is perl, \(.*\)/\1/'` if test -n "$NGX_PERL_VER"; then echo " + perl version: $NGX_PERL_VER" if [ "`echo 'use 5.006001; print "OK"' | $NGX_PERL 2>&1`" != OK ]; then echo echo "$0: error: perl 5.6.1 or higher is required" echo exit 1; fi NGX_PERL_CFLAGS="$CFLAGS `$NGX_PERL -MExtUtils::Embed -e ccopts`" NGX_PM_CFLAGS=`$NGX_PERL -MExtUtils::Embed -e ccopts` # gcc 4.1/4.2 warn about unused values in pTHX_ NGX_PERL_CFLAGS=`echo $NGX_PERL_CFLAGS \ | sed -e 's/-Wunused-value/-Wno-unused-value/'` # icc8 warns 'declaration hides parameter "my_perl"' in ENTER and LEAVE NGX_PERL_CFLAGS=`echo $NGX_PERL_CFLAGS \ | sed -e 's/-wd171/-wd171 -wd1599/'` ngx_perl_ldopts=`$NGX_PERL -MExtUtils::Embed -e ldopts` if $NGX_PERL -V:usemultiplicity | grep define > /dev/null; then have=NGX_HAVE_PERL_MULTIPLICITY . auto/have echo " + perl interpreter multiplicity found" fi if $NGX_PERL -V:useithreads | grep undef > /dev/null; then # FreeBSD port wants to link with -pthread non-threaded perl ngx_perl_ldopts=`echo $ngx_perl_ldopts | sed 's/ -pthread//'` fi CORE_LINK="$CORE_LINK $ngx_perl_ldopts" LINK_DEPS="$LINK_DEPS $NGX_OBJS/src/http/modules/perl/blib/arch/auto/nginx/nginx.so" if test -n "$NGX_PERL_MODULES"; then have=NGX_PERL_MODULES value="(u_char *) \"$NGX_PERL_MODULES\"" . auto/define NGX_PERL_MODULES_MAN=$NGX_PERL_MODULES/man3 fi else echo echo "$0: error: perl 5.6.1 or higher is required" echo exit 1; fi