Core: fix misallocation at ngx_crypt_apr1 (ticket #412). Found by using auth_basic.t from mdounin nginx-tests under valgrind. ==10470== Invalid write of size 1 ==10470== at 0x43603D: ngx_crypt_to64 (ngx_crypt.c:168) ==10470== by 0x43648E: ngx_crypt (ngx_crypt.c:153) ==10470== by 0x489D8B: ngx_http_auth_basic_crypt_handler (ngx_http_auth_basic_module.c:297) ==10470== by 0x48A24A: ngx_http_auth_basic_handler (ngx_http_auth_basic_module.c:240) ==10470== by 0x44EAB9: ngx_http_core_access_phase (ngx_http_core_module.c:1121) ==10470== by 0x44A822: ngx_http_core_run_phases (ngx_http_core_module.c:895) ==10470== by 0x44A932: ngx_http_handler (ngx_http_core_module.c:878) ==10470== by 0x455EEF: ngx_http_process_request (ngx_http_request.c:1852) ==10470== by 0x456527: ngx_http_process_request_headers (ngx_http_request.c:1283) ==10470== by 0x456A91: ngx_http_process_request_line (ngx_http_request.c:964) ==10470== by 0x457097: ngx_http_wait_request_handler (ngx_http_request.c:486) ==10470== by 0x4411EE: ngx_epoll_process_events (ngx_epoll_module.c:691) ==10470== Address 0x5866fab is 0 bytes after a block of size 27 alloc'd ==10470== at 0x4A074CD: malloc (vg_replace_malloc.c:236) ==10470== by 0x43B251: ngx_alloc (ngx_alloc.c:22) ==10470== by 0x421B0D: ngx_malloc (ngx_palloc.c:119) ==10470== by 0x421B65: ngx_pnalloc (ngx_palloc.c:147) ==10470== by 0x436368: ngx_crypt (ngx_crypt.c:140) ==10470== by 0x489D8B: ngx_http_auth_basic_crypt_handler (ngx_http_auth_basic_module.c:297) ==10470== by 0x48A24A: ngx_http_auth_basic_handler (ngx_http_auth_basic_module.c:240) ==10470== by 0x44EAB9: ngx_http_core_access_phase (ngx_http_core_module.c:1121) ==10470== by 0x44A822: ngx_http_core_run_phases (ngx_http_core_module.c:895) ==10470== by 0x44A932: ngx_http_handler (ngx_http_core_module.c:878) ==10470== by 0x455EEF: ngx_http_process_request (ngx_http_request.c:1852) ==10470== by 0x456527: ngx_http_process_request_headers (ngx_http_request.c:1283) ==10470==

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


    ngx_feature="GeoIP library"
    ngx_feature_name=
    ngx_feature_run=no
    ngx_feature_incs="#include <GeoIP.h>"
    ngx_feature_path=
    ngx_feature_libs="-lGeoIP"
    ngx_feature_test="GeoIP_open(NULL, 0)"
    . auto/feature


if [ $ngx_found = no ]; then

    # FreeBSD port

    ngx_feature="GeoIP library in /usr/local/"
    ngx_feature_path="/usr/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lGeoIP"
    else
        ngx_feature_libs="-L/usr/local/lib -lGeoIP"
    fi

    . auto/feature
fi


if [ $ngx_found = no ]; then

    # NetBSD port

    ngx_feature="GeoIP library in /usr/pkg/"
    ngx_feature_path="/usr/pkg/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/usr/pkg/lib -L/usr/pkg/lib -lGeoIP"
    else
        ngx_feature_libs="-L/usr/pkg/lib -lGeoIP"
    fi

    . auto/feature
fi


if [ $ngx_found = no ]; then

    # MacPorts

    ngx_feature="GeoIP library in /opt/local/"
    ngx_feature_path="/opt/local/include"

    if [ $NGX_RPATH = YES ]; then
        ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lGeoIP"
    else
        ngx_feature_libs="-L/opt/local/lib -lGeoIP"
    fi

    . auto/feature
fi


if [ $ngx_found = yes ]; then

    CORE_INCS="$CORE_INCS $ngx_feature_path"
    CORE_LIBS="$CORE_LIBS $ngx_feature_libs"

    if [ $NGX_IPV6 = YES ]; then
        ngx_feature="GeoIP IPv6 support"
        ngx_feature_name="NGX_HAVE_GEOIP_V6"
        ngx_feature_run=no
        ngx_feature_incs="#include <stdio.h>
                          #include <GeoIP.h>"
        #ngx_feature_path=
        #ngx_feature_libs=
        ngx_feature_test="printf(\"%d\", GEOIP_CITY_EDITION_REV0_V6);"
        . auto/feature
    fi

else

cat << END

$0: error: the GeoIP module requires the GeoIP library.
You can either do not enable the module or install the library.

END

    exit 1
fi