view auto/modules @ 6351:497d0cff8ace

Resolver: fixed use-after-free memory accesses with CNAME. When several requests were waiting for a response, then after getting a CNAME response only the last request's context had the name updated. Contexts of other requests had the wrong name. This name was used by ngx_resolve_name_done() to find the node to remove the request context from. When the name was wrong, the request could not be properly cancelled, its context was freed but stayed linked to the node's waiting list. This happened e.g. when the first request was aborted or timed out before the resolving completed. When it completed, this triggered a use-after-free memory access by calling ctx->handler of already freed request context. The bug manifests itself by "could not cancel <name> resolving" alerts in error_log. When a request was responded with a CNAME, the request context kept the pointer to the original node's rn->u.cname. If the original node expired before the resolving timed out or completed with an error, this would trigger a use-after-free memory access via ctx->name in ctx->handler(). The fix is to keep ctx->name unmodified. The name from context is no longer used by ngx_resolve_name_done(). Instead, we now keep the pointer to resolver node to which this request is linked. Keeping the original name intact also improves logging.
author Roman Arutyunyan <arut@nginx.com>
date Tue, 26 Jan 2016 16:46:59 +0300
parents 29f35e60840b
children c529555949b7
line wrap: on
line source


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


if [ $EVENT_SELECT = NO -a $EVENT_FOUND = NO ]; then
    EVENT_SELECT=YES
fi

if [ $EVENT_SELECT = YES ]; then
    have=NGX_HAVE_SELECT . auto/have
    CORE_SRCS="$CORE_SRCS $SELECT_SRCS"
    EVENT_MODULES="$EVENT_MODULES $SELECT_MODULE"
fi


if [ $EVENT_POLL = NO -a $EVENT_FOUND = NO ]; then
    EVENT_POLL=YES
fi

if [ $EVENT_POLL = YES ]; then
    have=NGX_HAVE_POLL . auto/have
    CORE_SRCS="$CORE_SRCS $POLL_SRCS"
    EVENT_MODULES="$EVENT_MODULES $POLL_MODULE"
fi


if [ $NGX_TEST_BUILD_DEVPOLL = YES ]; then
    have=NGX_HAVE_DEVPOLL . auto/have
    have=NGX_TEST_BUILD_DEVPOLL . auto/have
    EVENT_MODULES="$EVENT_MODULES $DEVPOLL_MODULE"
    CORE_SRCS="$CORE_SRCS $DEVPOLL_SRCS"
fi


if [ $NGX_TEST_BUILD_EVENTPORT = YES ]; then
    have=NGX_HAVE_EVENTPORT . auto/have
    have=NGX_TEST_BUILD_EVENTPORT . auto/have
    EVENT_MODULES="$EVENT_MODULES $EVENTPORT_MODULE"
    CORE_SRCS="$CORE_SRCS $EVENTPORT_SRCS"
fi

if [ $NGX_TEST_BUILD_EPOLL = YES ]; then
    have=NGX_HAVE_EPOLL . auto/have
    have=NGX_HAVE_EPOLLRDHUP . auto/have
    have=NGX_HAVE_EVENTFD . auto/have
    have=NGX_TEST_BUILD_EPOLL . auto/have
    EVENT_MODULES="$EVENT_MODULES $EPOLL_MODULE"
    CORE_SRCS="$CORE_SRCS $EPOLL_SRCS"
fi

if [ $NGX_TEST_BUILD_SOLARIS_SENDFILEV = YES ]; then
    have=NGX_TEST_BUILD_SOLARIS_SENDFILEV . auto/have
    CORE_SRCS="$CORE_SRCS $SOLARIS_SENDFILEV_SRCS"
fi


if [ $HTTP != YES ]; then
    have=NGX_CRYPT . auto/nohave
    CRYPT_LIB=
fi


if [ $HTTP_CACHE = YES ]; then
    USE_MD5=YES
    have=NGX_HTTP_CACHE . auto/have
    HTTP_SRCS="$HTTP_SRCS $HTTP_FILE_CACHE_SRCS"
fi


if [ $HTTP_SSI = YES ]; then
    HTTP_POSTPONE=YES
fi


if [ $HTTP_SLICE = YES ]; then
    HTTP_POSTPONE=YES
fi


if [ $HTTP_ADDITION = YES ]; then
    HTTP_POSTPONE=YES
fi


# the module order is important
#     ngx_http_static_module
#     ngx_http_gzip_static_module
#     ngx_http_dav_module
#     ngx_http_autoindex_module
#     ngx_http_index_module
#     ngx_http_random_index_module
#
#     ngx_http_access_module
#     ngx_http_realip_module
#
#
# the filter order is important
#     ngx_http_write_filter
#     ngx_http_header_filter
#     ngx_http_chunked_filter
#     ngx_http_v2_filter
#     ngx_http_range_header_filter
#     ngx_http_gzip_filter
#     ngx_http_postpone_filter
#     ngx_http_ssi_filter
#     ngx_http_charset_filter
#         ngx_http_xslt_filter
#         ngx_http_image_filter
#         ngx_http_sub_filter
#         ngx_http_addition_filter
#         ngx_http_gunzip_filter
#         ngx_http_userid_filter
#         ngx_http_headers_filter
#     ngx_http_copy_filter
#     ngx_http_range_body_filter
#     ngx_http_not_modified_filter
#     ngx_http_slice_filter

HTTP_FILTER_MODULES="$HTTP_WRITE_FILTER_MODULE \
                     $HTTP_HEADER_FILTER_MODULE \
                     $HTTP_CHUNKED_FILTER_MODULE"

if [ $HTTP_V2 = YES ]; then
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_V2_FILTER_MODULE"
fi

HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_RANGE_HEADER_FILTER_MODULE"

if [ $HTTP_GZIP = YES ]; then
    have=NGX_HTTP_GZIP . auto/have
    USE_ZLIB=YES
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_GZIP_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_GZIP_SRCS"
fi

if [ $HTTP_POSTPONE = YES ]; then
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_POSTPONE_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_POSTPONE_FILTER_SRCS"
fi

if [ $HTTP_SSI = YES ]; then
    have=NGX_HTTP_SSI . auto/have
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_SSI_FILTER_MODULE"
    HTTP_DEPS="$HTTP_DEPS $HTTP_SSI_DEPS"
    HTTP_SRCS="$HTTP_SRCS $HTTP_SSI_SRCS"
fi

if [ $HTTP_CHARSET = YES ]; then
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_CHARSET_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_CHARSET_SRCS"
fi

if [ $HTTP_XSLT = YES ]; then
    USE_LIBXSLT=YES
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_XSLT_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_XSLT_SRCS"
fi

if [ $HTTP_IMAGE_FILTER = YES ]; then
    USE_LIBGD=YES
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_IMAGE_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_IMAGE_SRCS"
fi

if [ $HTTP_SUB = YES ]; then
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_SUB_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_SUB_SRCS"
fi

if [ $HTTP_ADDITION = YES ]; then
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_ADDITION_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_ADDITION_SRCS"
fi

if [ $HTTP_GUNZIP = YES ]; then
    have=NGX_HTTP_GZIP . auto/have
    USE_ZLIB=YES
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_GUNZIP_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_GUNZIP_SRCS"
fi

if [ $HTTP_USERID = YES ]; then
    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_USERID_FILTER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_USERID_SRCS"
fi

if [ $HTTP_SLICE = YES ]; then
    HTTP_SRCS="$HTTP_SRCS $HTTP_SLICE_SRCS"
else
    HTTP_SLICE_FILTER_MODULE=""
fi


if [ $HTTP_V2 = YES ]; then
    have=NGX_HTTP_V2 . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_V2_MODULE"
    HTTP_INCS="$HTTP_INCS $HTTP_V2_INCS"
    HTTP_DEPS="$HTTP_DEPS $HTTP_V2_DEPS"
    HTTP_SRCS="$HTTP_SRCS $HTTP_V2_SRCS"
fi

HTTP_MODULES="$HTTP_MODULES $HTTP_STATIC_MODULE"

if [ $HTTP_GZIP_STATIC = YES ]; then
    have=NGX_HTTP_GZIP . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_GZIP_STATIC_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_GZIP_STATIC_SRCS"
fi

if [ $HTTP_DAV = YES ]; then
    have=NGX_HTTP_DAV . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_DAV_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_DAV_SRCS"
fi

if [ $HTTP_AUTOINDEX = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_AUTOINDEX_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_AUTOINDEX_SRCS"
fi

HTTP_MODULES="$HTTP_MODULES $HTTP_INDEX_MODULE"

if [ $HTTP_RANDOM_INDEX = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_RANDOM_INDEX_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_RANDOM_INDEX_SRCS"
fi

if [ $HTTP_AUTH_REQUEST = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_AUTH_REQUEST_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_AUTH_REQUEST_SRCS"
fi

if [ $HTTP_AUTH_BASIC = YES ]; then
    USE_MD5=YES
    USE_SHA1=YES
    have=NGX_CRYPT . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_AUTH_BASIC_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_AUTH_BASIC_SRCS"
    CORE_LIBS="$CORE_LIBS $CRYPT_LIB"
fi

if [ $HTTP_ACCESS = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_ACCESS_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_ACCESS_SRCS"
fi

if [ $HTTP_LIMIT_CONN = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_LIMIT_CONN_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_LIMIT_CONN_SRCS"
fi

if [ $HTTP_LIMIT_REQ = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_LIMIT_REQ_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_LIMIT_REQ_SRCS"
fi

if [ $HTTP_REALIP = YES ]; then
    have=NGX_HTTP_REALIP . auto/have
    have=NGX_HTTP_X_FORWARDED_FOR . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_REALIP_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_REALIP_SRCS"
fi

if [ $HTTP_STATUS = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_STATUS_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_STATUS_SRCS"
fi

if [ $HTTP_GEO = YES ]; then
    have=NGX_HTTP_X_FORWARDED_FOR . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_GEO_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_GEO_SRCS"
fi

if [ $HTTP_GEOIP = YES ]; then
    have=NGX_HTTP_X_FORWARDED_FOR . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_GEOIP_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_GEOIP_SRCS"
fi

if [ $HTTP_MAP = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_MAP_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_MAP_SRCS"
fi

if [ $HTTP_SPLIT_CLIENTS = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_SPLIT_CLIENTS_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_SPLIT_CLIENTS_SRCS"
fi

if [ $HTTP_REFERER = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_REFERER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_REFERER_SRCS"
fi

if [ $HTTP_REWRITE = YES -a $USE_PCRE != DISABLED ]; then
    USE_PCRE=YES
    HTTP_MODULES="$HTTP_MODULES $HTTP_REWRITE_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_REWRITE_SRCS"
fi

if [ $HTTP_SSL = YES ]; then
    USE_OPENSSL=YES
    have=NGX_HTTP_SSL . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_SSL_MODULE"
    HTTP_DEPS="$HTTP_DEPS $HTTP_SSL_DEPS"
    HTTP_SRCS="$HTTP_SRCS $HTTP_SSL_SRCS"
fi

if [ $HTTP_PROXY = YES ]; then
    have=NGX_HTTP_X_FORWARDED_FOR . auto/have
    #USE_MD5=YES
    HTTP_MODULES="$HTTP_MODULES $HTTP_PROXY_MODULE"
    HTTP_DEPS="$HTTP_DEPS $HTTP_PROXY_DEPS"
    HTTP_SRCS="$HTTP_SRCS $HTTP_PROXY_SRCS"
fi

if [ $HTTP_FASTCGI = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_FASTCGI_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_FASTCGI_SRCS"
fi

if [ $HTTP_UWSGI = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_UWSGI_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_UWSGI_SRCS"
fi

if [ $HTTP_SCGI = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_SCGI_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_SCGI_SRCS"
fi

if [ $HTTP_PERL = YES ]; then
    USE_PERL=YES
    HTTP_MODULES="$HTTP_MODULES $HTTP_PERL_MODULE"
    HTTP_INCS="$HTTP_INCS $HTTP_PERL_INCS"
    HTTP_DEPS="$HTTP_DEPS $HTTP_PERL_DEPS"
    HTTP_SRCS="$HTTP_SRCS $HTTP_PERL_SRCS"
fi

if [ $HTTP_MEMCACHED = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_MEMCACHED_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_MEMCACHED_SRCS"
fi

if [ $HTTP_EMPTY_GIF = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_EMPTY_GIF_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_EMPTY_GIF_SRCS"
fi

if [ $HTTP_BROWSER = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_BROWSER_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_BROWSER_SRCS"
fi

if [ $HTTP_SECURE_LINK = YES ]; then
    USE_MD5=YES
    HTTP_MODULES="$HTTP_MODULES $HTTP_SECURE_LINK_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_SECURE_LINK_SRCS"
fi

if [ $HTTP_DEGRADATION = YES ]; then
    have=NGX_HTTP_DEGRADATION . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_DEGRADATION_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_DEGRADATION_SRCS"
fi

if [ $HTTP_FLV = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_FLV_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_FLV_SRCS"
fi

if [ $HTTP_MP4 = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_MP4_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_MP4_SRCS"
fi

if [ $HTTP_UPSTREAM_HASH = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_UPSTREAM_HASH_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_UPSTREAM_HASH_SRCS"
fi

if [ $HTTP_UPSTREAM_IP_HASH = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_UPSTREAM_IP_HASH_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_UPSTREAM_IP_HASH_SRCS"
fi

if [ $HTTP_UPSTREAM_LEAST_CONN = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_UPSTREAM_LEAST_CONN_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_UPSTREAM_LEAST_CONN_SRCS"
fi

if [ $HTTP_UPSTREAM_KEEPALIVE = YES ]; then
    HTTP_MODULES="$HTTP_MODULES $HTTP_UPSTREAM_KEEPALIVE_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_UPSTREAM_KEEPALIVE_SRCS"
fi

if [ $HTTP_UPSTREAM_ZONE = YES ]; then
    have=NGX_HTTP_UPSTREAM_ZONE . auto/have
    HTTP_MODULES="$HTTP_MODULES $HTTP_UPSTREAM_ZONE_MODULE"
    HTTP_SRCS="$HTTP_SRCS $HTTP_UPSTREAM_ZONE_SRCS"
fi

if [ $HTTP_STUB_STATUS = YES ]; then
    have=NGX_STAT_STUB . auto/have
    HTTP_MODULES="$HTTP_MODULES ngx_http_stub_status_module"
    HTTP_SRCS="$HTTP_SRCS src/http/modules/ngx_http_stub_status_module.c"
fi

#if [ -r $NGX_OBJS/auto ]; then
#    . $NGX_OBJS/auto
#fi


if test -n "$NGX_ADDONS"; then

    echo configuring additional modules

    for ngx_addon_dir in $NGX_ADDONS
    do
        echo "adding module in $ngx_addon_dir"

        if test -f $ngx_addon_dir/config; then
            . $ngx_addon_dir/config

            echo " + $ngx_addon_name was configured"

        else
            echo "$0: error: no $ngx_addon_dir/config was found"
            exit 1
        fi
    done
fi


if [ $MAIL_SSL = YES ]; then
    have=NGX_MAIL_SSL . auto/have
    USE_OPENSSL=YES
fi


if [ $STREAM_SSL = YES ]; then
    have=NGX_STREAM_SSL . auto/have
    USE_OPENSSL=YES
fi


modules="$CORE_MODULES $EVENT_MODULES"


# thread pool module should be initialized after events
if [ $USE_THREADS = YES ]; then
    modules="$modules $THREAD_POOL_MODULE"
fi


if [ $USE_OPENSSL = YES ]; then
    modules="$modules $OPENSSL_MODULE"
    CORE_DEPS="$CORE_DEPS $OPENSSL_DEPS"
    CORE_SRCS="$CORE_SRCS $OPENSSL_SRCS"
fi

if [ $USE_PCRE = YES ]; then
    modules="$modules $REGEX_MODULE"
    CORE_DEPS="$CORE_DEPS $REGEX_DEPS"
    CORE_SRCS="$CORE_SRCS $REGEX_SRCS"
fi

if [ $HTTP = YES ]; then
    modules="$modules $HTTP_MODULES $HTTP_FILTER_MODULES \
             $HTTP_HEADERS_FILTER_MODULE \
             $HTTP_AUX_FILTER_MODULES \
             $HTTP_COPY_FILTER_MODULE \
             $HTTP_RANGE_BODY_FILTER_MODULE \
             $HTTP_NOT_MODIFIED_FILTER_MODULE \
             $HTTP_SLICE_FILTER_MODULE"

    NGX_ADDON_DEPS="$NGX_ADDON_DEPS \$(HTTP_DEPS)"
fi


if [ $MAIL = YES ]; then
    modules="$modules $MAIL_MODULES"

    if [ $MAIL_SSL = YES ]; then
        modules="$modules $MAIL_SSL_MODULE"
        MAIL_DEPS="$MAIL_DEPS $MAIL_SSL_DEPS"
        MAIL_SRCS="$MAIL_SRCS $MAIL_SSL_SRCS"
    fi

    if [ $MAIL_POP3 = YES ]; then
        modules="$modules $MAIL_POP3_MODULE"
        MAIL_DEPS="$MAIL_DEPS $MAIL_POP3_DEPS"
        MAIL_SRCS="$MAIL_SRCS $MAIL_POP3_SRCS"
    fi

    if [ $MAIL_IMAP = YES ]; then
        modules="$modules $MAIL_IMAP_MODULE"
        MAIL_DEPS="$MAIL_DEPS $MAIL_IMAP_DEPS"
        MAIL_SRCS="$MAIL_SRCS $MAIL_IMAP_SRCS"
    fi

    if [ $MAIL_SMTP = YES ]; then
        modules="$modules $MAIL_SMTP_MODULE"
        MAIL_DEPS="$MAIL_DEPS $MAIL_SMTP_DEPS"
        MAIL_SRCS="$MAIL_SRCS $MAIL_SMTP_SRCS"
    fi

    modules="$modules $MAIL_AUTH_HTTP_MODULE"
    MAIL_SRCS="$MAIL_SRCS $MAIL_AUTH_HTTP_SRCS"

    modules="$modules $MAIL_PROXY_MODULE"
    MAIL_SRCS="$MAIL_SRCS $MAIL_PROXY_SRCS"

    NGX_ADDON_DEPS="$NGX_ADDON_DEPS \$(MAIL_DEPS)"
fi


if [ $STREAM = YES ]; then
    have=NGX_STREAM . auto/have
    modules="$modules $STREAM_MODULES"

    if [ $STREAM_SSL = YES ]; then
        modules="$modules $STREAM_SSL_MODULE"
        STREAM_DEPS="$STREAM_DEPS $STREAM_SSL_DEPS"
        STREAM_SRCS="$STREAM_SRCS $STREAM_SSL_SRCS"
    fi

    if [ $STREAM_LIMIT_CONN = YES ]; then
        modules="$modules $STREAM_LIMIT_CONN_MODULE"
        STREAM_SRCS="$STREAM_SRCS $STREAM_LIMIT_CONN_SRCS"
    fi

    if [ $STREAM_ACCESS = YES ]; then
        modules="$modules $STREAM_ACCESS_MODULE"
        STREAM_SRCS="$STREAM_SRCS $STREAM_ACCESS_SRCS"
    fi

    if [ $STREAM_UPSTREAM_HASH = YES ]; then
        modules="$modules $STREAM_UPSTREAM_HASH_MODULE"
        STREAM_SRCS="$STREAM_SRCS $STREAM_UPSTREAM_HASH_SRCS"
    fi

    if [ $STREAM_UPSTREAM_LEAST_CONN = YES ]; then
        modules="$modules $STREAM_UPSTREAM_LEAST_CONN_MODULE"
        STREAM_SRCS="$STREAM_SRCS $STREAM_UPSTREAM_LEAST_CONN_SRCS"
    fi

    if [ $STREAM_UPSTREAM_ZONE = YES ]; then
        have=NGX_STREAM_UPSTREAM_ZONE . auto/have
        modules="$modules $STREAM_UPSTREAM_ZONE_MODULE"
        STREAM_SRCS="$STREAM_SRCS $STREAM_UPSTREAM_ZONE_SRCS"
    fi

    NGX_ADDON_DEPS="$NGX_ADDON_DEPS \$(STREAM_DEPS)"
fi


if [ $NGX_GOOGLE_PERFTOOLS = YES ]; then
    modules="$modules $NGX_GOOGLE_PERFTOOLS_MODULE"
    NGX_MISC_SRCS="$NGX_MISC_SRCS $NGX_GOOGLE_PERFTOOLS_SRCS"
fi


if [ $NGX_CPP_TEST = YES ]; then
    NGX_MISC_SRCS="$NGX_MISC_SRCS $NGX_CPP_TEST_SRCS"
    CORE_LIBS="$CORE_LIBS -lstdc++"
fi


cat << END                                    > $NGX_MODULES_C

#include <ngx_config.h>
#include <ngx_core.h>

$NGX_PRAGMA

END

for mod in $modules
do
    echo "extern ngx_module_t  $mod;"         >> $NGX_MODULES_C
done

echo                                          >> $NGX_MODULES_C
echo 'ngx_module_t *ngx_modules[] = {'        >> $NGX_MODULES_C

for mod in $modules
do
    echo "    &$mod,"                         >> $NGX_MODULES_C
done

cat << END                                    >> $NGX_MODULES_C
    NULL
};

END