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SSL: ssl_reject_handshake directive (ticket #195). In some cases it might be needed to reject SSL handshake based on SNI server name provided, for example, to make sure an invalid certificate is not returned to clients trying to contact a name-based virtual server without SSL configured. Previously, a "ssl_ciphers aNULL;" was used for this. This workaround, however, is not compatible with TLSv1.3, in particular, when using BoringSSL, where it is not possible to configure TLSv1.3 ciphers at all. With this change, the ssl_reject_handshake directive is introduced, which instructs nginx to reject SSL handshakes with an "unrecognized_name" alert in a particular server block. For example, to reject handshake with names other than example.com, one can use the following configuration: server { listen 443 ssl; ssl_reject_handshake on; } server { listen 443 ssl; server_name example.com; ssl_certificate example.com.crt; ssl_certificate_key example.com.key; } The following configuration can be used to reject all SSL handshakes without SNI server name provided: server { listen 443 ssl; ssl_reject_handshake on; } server { listen 443 ssl; server_name ~^; ssl_certificate example.crt; ssl_certificate_key example.key; } Additionally, the ssl_reject_handshake directive makes configuring certificates for the default server block optional. If no certificates are configured in the default server for a given listening socket, certificates must be defined in all non-default server blocks with the listening socket in question.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 22 Oct 2020 18:02:28 +0300
parents 4925a6d13746
children 9bcc5cc94ff4
line wrap: on
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


LINK="\$(CC)"

MAIN_LINK=
MODULE_LINK="-shared"

ngx_include_opt="-I "
ngx_compile_opt="-c"
ngx_pic_opt="-fPIC"
ngx_objout="-o "
ngx_binout="-o "
ngx_objext="o"
ngx_binext=
ngx_modext=".so"

ngx_long_start=
ngx_long_end=

ngx_regex_dirsep="\/"
ngx_dirsep='/'

ngx_regex_cont=' \\\
	'
ngx_cont=' \
	'
ngx_tab=' \
		'
ngx_spacer=

ngx_long_regex_cont=$ngx_regex_cont
ngx_long_cont=$ngx_cont

. auto/cc/name

if test -n "$CFLAGS"; then

    CC_TEST_FLAGS="$CFLAGS $NGX_CC_OPT"

    case $NGX_CC_NAME in

        ccc)
            # Compaq C V6.5-207

            ngx_include_opt="-I"
        ;;

        sunc)

            MAIN_LINK=
            MODULE_LINK="-G"

            case "$NGX_MACHINE" in

                i86pc)
                    NGX_AUX=" src/os/unix/ngx_sunpro_x86.il"
                ;;

                sun4u | sun4v)
                    NGX_AUX=" src/os/unix/ngx_sunpro_sparc64.il"
                ;;

            esac

            case $CPU in

                amd64)
                    NGX_AUX=" src/os/unix/ngx_sunpro_amd64.il"
                ;;

            esac
        ;;

    esac

else

    case $NGX_CC_NAME in
        gcc)
            # gcc 2.7.2.3, 2.8.1, 2.95.4, egcs-1.1.2
            #     3.0.4, 3.1.1, 3.2.3, 3.3.2, 3.3.3, 3.3.4, 3.4.0, 3.4.2
            #     4.0.0, 4.0.1, 4.1.0

            . auto/cc/gcc
        ;;

        clang)
            # Clang C compiler

            . auto/cc/clang
        ;;

        icc)
            # Intel C++ compiler 7.1, 8.0, 8.1

            . auto/cc/icc
        ;;

        sunc)
            # Sun C 5.7 Patch 117837-04 2005/05/11

            . auto/cc/sunc
        ;;

        ccc)
            # Compaq C V6.5-207

            . auto/cc/ccc
        ;;

        acc)
            # aCC: HP ANSI C++ B3910B A.03.55.02

            . auto/cc/acc
        ;;

        msvc*)
            # MSVC++ 6.0 SP2, MSVC++ Toolkit 2003

            . auto/cc/msvc
        ;;

        owc)
            # Open Watcom C 1.0, 1.2

            . auto/cc/owc
        ;;

        bcc)
            # Borland C++ 5.5

            . auto/cc/bcc
        ;;

    esac

    CC_TEST_FLAGS="$CC_TEST_FLAGS $NGX_CC_OPT"

fi

CFLAGS="$CFLAGS $NGX_CC_OPT"
NGX_TEST_LD_OPT="$NGX_LD_OPT"

if [ "$NGX_PLATFORM" != win32 ]; then

    if test -n "$NGX_LD_OPT"; then
        ngx_feature=--with-ld-opt=\"$NGX_LD_OPT\"
        ngx_feature_name=
        ngx_feature_run=no
        ngx_feature_incs=
        ngx_feature_path=
        ngx_feature_libs=
        ngx_feature_test=
        . auto/feature

        if [ $ngx_found = no ]; then
            echo $0: error: the invalid value in --with-ld-opt=\"$NGX_LD_OPT\"
            echo
            exit 1
        fi
    fi


    ngx_feature="-Wl,-E switch"
    ngx_feature_name=
    ngx_feature_run=no
    ngx_feature_incs=
    ngx_feature_path=
    ngx_feature_libs=-Wl,-E
    ngx_feature_test=
    . auto/feature

    if [ $ngx_found = yes ]; then
        MAIN_LINK="-Wl,-E"
    fi


    if [ "$NGX_CC_NAME" = "sunc" ]; then
        echo "checking for gcc builtin atomic operations ... disabled"
    else
        ngx_feature="gcc builtin atomic operations"
        ngx_feature_name=NGX_HAVE_GCC_ATOMIC
        ngx_feature_run=yes
        ngx_feature_incs=
        ngx_feature_path=
        ngx_feature_libs=
        ngx_feature_test="long  n = 0;
                          if (!__sync_bool_compare_and_swap(&n, 0, 1))
                              return 1;
                          if (__sync_fetch_and_add(&n, 1) != 1)
                              return 1;
                          if (n != 2)
                              return 1;
                          __sync_synchronize();"
        . auto/feature
    fi


    if [ "$NGX_CC_NAME" = "ccc" ]; then
        echo "checking for C99 variadic macros ... disabled"
    else
        ngx_feature="C99 variadic macros"
        ngx_feature_name="NGX_HAVE_C99_VARIADIC_MACROS"
        ngx_feature_run=yes
        ngx_feature_incs="#include <stdio.h>
#define var(dummy, ...)  sprintf(__VA_ARGS__)"
        ngx_feature_path=
        ngx_feature_libs=
        ngx_feature_test="char  buf[30]; buf[0] = '0';
                          var(0, buf, \"%d\", 1);
                          if (buf[0] != '1') return 1"
        . auto/feature
    fi


    ngx_feature="gcc variadic macros"
    ngx_feature_name="NGX_HAVE_GCC_VARIADIC_MACROS"
    ngx_feature_run=yes
    ngx_feature_incs="#include <stdio.h>
#define var(dummy, args...)  sprintf(args)"
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test="char  buf[30]; buf[0] = '0';
                      var(0, buf, \"%d\", 1);
                      if (buf[0] != '1') return 1"
    . auto/feature


    ngx_feature="gcc builtin 64 bit byteswap"
    ngx_feature_name="NGX_HAVE_GCC_BSWAP64"
    ngx_feature_run=no
    ngx_feature_incs=
    ngx_feature_path=
    ngx_feature_libs=
    ngx_feature_test="if (__builtin_bswap64(0)) return 1"
    . auto/feature


#    ngx_feature="inline"
#    ngx_feature_name=
#    ngx_feature_run=no
#    ngx_feature_incs="int inline f(void) { return 1 }"
#    ngx_feature_path=
#    ngx_feature_libs=
#    ngx_feature_test=
#    . auto/feature
#
#    if [ $ngx_found = yes ]; then
#    fi

fi