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SSL: automatic rotation of session ticket keys. As long as ssl_session_cache in shared memory is configured, session ticket keys are now automatically generated in shared memory, and rotated periodically. This can be beneficial from forward secrecy point of view, and also avoids increased CPU usage after configuration reloads. This also helps BoringSSL to properly resume sessions in configurations with multiple worker processes and no ssl_session_ticket_key directives, as BoringSSL tries to automatically rotate session ticket keys and does this independently in different worker processes, thus breaking session resumption between worker processes.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 12 Oct 2022 20:14:53 +0300
parents 0b5f12d5c531
children
line wrap: on
line source


# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


if [ $PCRE_LIBRARY = PCRE2 ]; then

    # PCRE2

    if [ $NGX_CC_NAME = msvc ]; then

        # With PCRE2, it is not possible to compile all sources.
        # Since list of source files changes between versions, we
        # test files which might not be present.

        ngx_pcre_srcs="pcre2_auto_possess.c \
                       pcre2_chartables.c \
                       pcre2_compile.c \
                       pcre2_config.c \
                       pcre2_context.c \
                       pcre2_dfa_match.c \
                       pcre2_error.c \
                       pcre2_jit_compile.c \
                       pcre2_maketables.c \
                       pcre2_match.c \
                       pcre2_match_data.c \
                       pcre2_newline.c \
                       pcre2_ord2utf.c \
                       pcre2_pattern_info.c \
                       pcre2_string_utils.c \
                       pcre2_study.c \
                       pcre2_substitute.c \
                       pcre2_substring.c \
                       pcre2_tables.c \
                       pcre2_ucd.c \
                       pcre2_valid_utf.c \
                       pcre2_xclass.c"

        ngx_pcre_test="pcre2_convert.c \
                       pcre2_extuni.c \
                       pcre2_find_bracket.c \
                       pcre2_script_run.c \
                       pcre2_serialize.c"

        for ngx_src in $ngx_pcre_test
        do
            if [ -f $PCRE/src/$ngx_src ]; then
                ngx_pcre_srcs="$ngx_pcre_srcs $ngx_src"
            fi
        done

        ngx_pcre_objs=`echo $ngx_pcre_srcs \
            | sed -e "s#\([^ ]*\.\)c#\1$ngx_objext#g"`

        ngx_pcre_srcs=`echo $ngx_pcre_srcs \
            | sed -e "s/  *\([^ ][^ ]*\)/$ngx_regex_cont\1/g"`
        ngx_pcre_objs=`echo $ngx_pcre_objs \
            | sed -e "s/  *\([^ ][^ ]*\)/$ngx_regex_cont\1/g"`

        cat << END                                            >> $NGX_MAKEFILE

PCRE_CFLAGS =	-O2 -Ob1 -Oi -Gs $LIBC $CPU_OPT
PCRE_FLAGS =	-DHAVE_CONFIG_H -DPCRE2_STATIC -DPCRE2_CODE_UNIT_WIDTH=8 \\
		-DHAVE_MEMMOVE

PCRE_SRCS =	 $ngx_pcre_srcs
PCRE_OBJS =	 $ngx_pcre_objs

$PCRE/src/pcre2.h:
	cd $PCRE/src \\
	&& copy /y config.h.generic config.h \\
	&& copy /y pcre2.h.generic pcre2.h \\
	&& copy /y pcre2_chartables.c.dist pcre2_chartables.c

$PCRE/src/pcre2-8.lib:	$PCRE/src/pcre2.h $NGX_MAKEFILE
	cd $PCRE/src \\
	&& cl -nologo -c \$(PCRE_CFLAGS) -I . \$(PCRE_FLAGS) \$(PCRE_SRCS) \\
	&& link -lib -out:pcre2-8.lib -verbose:lib \$(PCRE_OBJS)

END

    else

        cat << END                                            >> $NGX_MAKEFILE

$PCRE/src/pcre2.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/libpcre2-8.a:	$PCRE/Makefile
	cd $PCRE \\
	&& \$(MAKE) libpcre2-8.la

END

    fi


else

    # PCRE

    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

fi