/*?Licensed?to?the?Apache?Software?Foundation?（ASF）?under?one?or?more
?*?contributor?license?agreements.??See?the?NOTICE?file?distributed?with
?*?this?work?for?additional?information?regarding?copyright?ownership.
?*?The?ASF?licenses?this?file?to?You?under?the?Apache?License?Version?2.0
?*?（the?“License“）;?you?may?not?use?this?file?except?in?compliance?with
?*?the?License.??You?may?obtain?a?copy?of?the?License?at
?*
?*?????http://www.apache.org/licenses/LICENSE-2.0
?*
?*?Unless?required?by?applicable?law?or?agreed?to?in?writing?software
?*?distributed?under?the?License?is?distributed?on?an?“AS?IS“?BASIS
?*?WITHOUT?WARRANTIES?OR?CONDITIONS?OF?ANY?KIND?either?express?or?implied.
?*?See?the?License?for?the?specific?language?governing?permissions?and
?*?limitations?under?the?License.
?*/

/*
?*?Security?options?etc.
?*
?*?Module?derived?from?code?originally?written?by?Rob?McCool
?*
?*/

#include?“apr_strings.h“
#include?“apr_network_io.h“
#include?“apr_md5.h“

#define?APR_WANT_STRFUNC
#define?APR_WANT_BYTEFUNC
#include?“apr_want.h“

#include?“ap_config.h“
#include?“httpd.h“
#include?“http_core.h“
#include?“http_config.h“
#include?“http_log.h“
#include?“http_protocol.h“
#include?“http_request.h“

#include?“mod_auth.h“

#if?APR_HAVE_NETINET_IN_H
#include?
#endif

enum?allowdeny_type?{
????T_ENV
????T_NENV
????T_ALL
????T_IP
????T_HOST
????T_FAIL
};

typedef?struct?{
????apr_int64_t?limited;
????union?{
????????char?*from;
????????apr_ipsubnet_t?*ip;
????}?x;
????enum?allowdeny_type?type;
}?allowdeny;

/*?things?in?the?‘order‘?array?*/
#define?DENY_THEN_ALLOW?0
#define?ALLOW_THEN_DENY?1
#define?MUTUAL_FAILURE?2

typedef?struct?{
????int?order[METHODS];
????apr_array_header_t?*allows;
????apr_array_header_t?*denys;
????int?*satisfy;?/*?for?every?method?one?*/
}?access_compat_dir_conf;

module?AP_MODULE_DECLARE_DATA?access_compat_module;

static?void?*create_access_compat_dir_config（apr_pool_t?*p?char?*dummy）
{
????int?i;
????access_compat_dir_conf?*conf?=
????????（access_compat_dir_conf?*）apr_pcalloc（p?sizeof（access_compat_dir_conf））;

????for?（i?=?0;?i?????????conf->order[i]?=?DENY_THEN_ALLOW;
????}
????conf->allows?=?apr_array_make（p?1?sizeof（allowdeny））;
????conf->denys?=?apr_array_make（p?1?sizeof（allowdeny））;
????conf->satisfy?=?apr_palloc（p?sizeof（*conf->satisfy）?*?METHODS）;
????for?（i?=?0;?i?????????conf->satisfy[i]?=?SATISFY_NOSPEC;
????}

????return?（void?*）conf;
}

static?const?char?*order（cmd_parms?*cmd?void?*dv?const?char?*arg）
{
????access_compat_dir_conf?*d?=?（access_compat_dir_conf?*）?dv;
????int?i?o;

????if?（!strcasecmp（arg?“allowdeny“））
????????o?=?ALLOW_THEN_DENY;
????else?if?（!strcasecmp（arg?“denyallow“））
????????o?=?DENY_THEN_ALLOW;
????else?if?（!strcasecmp（arg?“mutual-failure“））
????????o?=?MUTUAL_FAILURE;
????else
????????return?“unknown?order“;

????for?（i?=?0;?i?????????if?（cmd->limited?&?（AP_METHOD_BIT?<????????????d->order[i]?=?o;

??