Mercurial > hg > nginx-quic
view auto/include @ 4658:c92289afb5be stable-1.2
Merge of r4611, r4620: resolver fixes.
*) Fixed segmentation fault in ngx_resolver_create_name_query().
If name passed for resolution was { 0, NULL } (e.g. as a result
of name server returning CNAME pointing to ".") pointer wrapped
to (void *) -1 resulting in segmentation fault on an attempt to
dereference it.
Reported by Lanshun Zhou.
*) Resolver: protection from duplicate responses.
If we already had CNAME in resolver node (i.e. rn->cnlen and rn->u.cname
set), and got additional response with A record, it resulted in rn->cnlen
set and rn->u.cname overwritten by rn->u.addr (or rn->u.addrs), causing
segmentation fault later in ngx_resolver_free_node() on an attempt to free
overwritten rn->u.cname. The opposite (i.e. CNAME got after A) might cause
similar problems as well.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 04 Jun 2012 10:15:55 +0000 |
parents | d620f497c50f |
children | 434548349838 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo $ngx_n "checking for $ngx_include ...$ngx_c" cat << END >> $NGX_AUTOCONF_ERR ---------------------------------------- checking for $ngx_include END ngx_found=no cat << END > $NGX_AUTOTEST.c $NGX_INCLUDE_SYS_PARAM_H #include <$ngx_include> int main() { return 0; } END ngx_test="$CC -o $NGX_AUTOTEST $NGX_AUTOTEST.c" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then ngx_found=yes echo " found" ngx_name=`echo $ngx_include \ | tr abcdefghijklmnopqrstuvwxyz/. ABCDEFGHIJKLMNOPQRSTUVWXYZ__` have=NGX_HAVE_$ngx_name . auto/have_headers eval "NGX_INCLUDE_$ngx_name='#include <$ngx_include>'" #STUB eval "NGX_$ngx_name='#include <$ngx_include>'" else echo " not found" echo "----------" >> $NGX_AUTOCONF_ERR cat $NGX_AUTOTEST.c >> $NGX_AUTOCONF_ERR echo "----------" >> $NGX_AUTOCONF_ERR echo $ngx_test >> $NGX_AUTOCONF_ERR echo "----------" >> $NGX_AUTOCONF_ERR fi rm $NGX_AUTOTEST*