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Fixed handling of unix sockets in $binary_remote_addr. Previously, unix sockets were treated as AF_INET ones, and this may result in buffer overread on Linux, where unbound unix sockets have 2-byte addresses. Note that it is not correct to use just sun_path as a binary representation for unix sockets. This will result in an empty string for unbound unix sockets, and thus behaviour of limit_req and limit_conn will change when switching from $remote_addr to $binary_remote_addr. As such, normal text representation is used. Reported by Stephan Dollberg.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 04 Oct 2017 21:19:42 +0300
parents 78f8ac479735
children 0b5f12d5c531
line wrap: on
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


case "$NGX_CC_NAME" in

    msvc)
        ngx_makefile=makefile.msvc
        ngx_opt="CPU_OPT=\"$CPU_OPT\" LIBC=$LIBC"
        ngx_pcre="PCRE=\"$PCRE\""
    ;;

    owc)
        ngx_makefile=makefile.owc
        ngx_opt="CPU_OPT=\"$CPU_OPT\""
        ngx_pcre=`echo PCRE=\"$PCRE\" | sed -e "s/\//$ngx_regex_dirsep/g"`
    ;;

    bcc)
        ngx_makefile=makefile.bcc
        ngx_opt="-DCPU_OPT=\"$CPU_OPT\""
        ngx_pcre=`echo \-DPCRE=\"$PCRE\" | sed -e "s/\//$ngx_regex_dirsep/g"`
    ;;

    *)
        ngx_makefile=
    ;;

esac


if [ -n "$ngx_makefile" ]; then

    cat << END                                                >> $NGX_MAKEFILE

`echo "$PCRE/pcre.lib:	$PCRE/pcre.h $NGX_MAKEFILE"			\
	| sed -e "s/\//$ngx_regex_dirsep/g"`
	\$(MAKE) -f auto/lib/pcre/$ngx_makefile $ngx_pcre $ngx_opt

`echo "$PCRE/pcre.h:" | sed -e "s/\//$ngx_regex_dirsep/g"`
	\$(MAKE) -f auto/lib/pcre/$ngx_makefile $ngx_pcre pcre.h

END

else

    cat << END                                                >> $NGX_MAKEFILE

$PCRE/pcre.h:	$PCRE/Makefile

$PCRE/Makefile:	$NGX_MAKEFILE
	cd $PCRE \\
	&& if [ -f Makefile ]; then \$(MAKE) distclean; fi \\
	&& CC="\$(CC)" CFLAGS="$PCRE_OPT" \\
	./configure --disable-shared $PCRE_CONF_OPT

$PCRE/.libs/libpcre.a:	$PCRE/Makefile
	cd $PCRE \\
	&& \$(MAKE) libpcre.la

END

fi