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File Content: `ap_hooks.h`

/* 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.
 */

/**
 * @file ap_hooks.h
 * @brief ap hook functions and macros
 */

#ifndef AP_HOOKS_H
#define AP_HOOKS_H

/* Although this file doesn't declare any hooks, declare the hook group here */
/**
 * @defgroup hooks Apache Hooks
 * @ingroup  APACHE_CORE
 */

#if defined(AP_HOOK_PROBES_ENABLED) && !defined(APR_HOOK_PROBES_ENABLED)
#define APR_HOOK_PROBES_ENABLED 1
#endif

#ifdef APR_HOOK_PROBES_ENABLED
#include "ap_hook_probes.h"
#endif

#include "apr.h"
#include "apr_hooks.h"
#include "apr_optional_hooks.h"

#ifdef DOXYGEN
/* define these just so doxygen documents them */

/**
 * AP_DECLARE_STATIC is defined when including Apache's Core headers,
 * to provide static linkage when the dynamic library may be unavailable.
 *
 * @see AP_DECLARE_EXPORT
 *
 * AP_DECLARE_STATIC and AP_DECLARE_EXPORT are left undefined when
 * including Apache's Core headers, to import and link the symbols from the
 * dynamic Apache Core library and assure appropriate indirection and calling
 * conventions at compile time.
 */
# define AP_DECLARE_STATIC
/**
 * AP_DECLARE_EXPORT is defined when building the Apache Core dynamic
 * library, so that all public symbols are exported.
 *
 * @see AP_DECLARE_STATIC
 */
# define AP_DECLARE_EXPORT

#endif /* def DOXYGEN */

/**
 * Declare a hook function
 * @param ret The return type of the hook
 * @param name The hook's name (as a literal)
 * @param args The arguments the hook function takes, in brackets.
 */
#define AP_DECLARE_HOOK(ret,name,args) \
        APR_DECLARE_EXTERNAL_HOOK(ap,AP,ret,name,args)

/** @internal */
#define AP_IMPLEMENT_HOOK_BASE(name) \
        APR_IMPLEMENT_EXTERNAL_HOOK_BASE(ap,AP,name)

/**
 * Implement an Apache core hook that has no return code, and
 * therefore runs all of the registered functions. The implementation
 * is called ap_run_<i>name</i>.
 *
 * @param name The name of the hook
 * @param args_decl The declaration of the arguments for the hook, for example
 * "(int x,void *y)"
 * @param args_use The arguments for the hook as used in a call, for example
 * "(x,y)"
 * @note If IMPLEMENTing a hook that is not linked into the Apache core,
 * (e.g. within a dso) see APR_IMPLEMENT_EXTERNAL_HOOK_VOID.
 */
#define AP_IMPLEMENT_HOOK_VOID(name,args_decl,args_use) \
        APR_IMPLEMENT_EXTERNAL_HOOK_VOID(ap,AP,name,args_decl,args_use)

/**
 * Implement an Apache core hook that runs until one of the functions
 * returns something other than ok or decline. That return value is
 * then returned from the hook runner. If the hooks run to completion,
 * then ok is returned. Note that if no hook runs it would probably be
 * more correct to return decline, but this currently does not do
 * so. The implementation is called ap_run_<i>name</i>.
 *
 * @param ret The return type of the hook (and the hook runner)
 * @param name The name of the hook
 * @param args_decl The declaration of the arguments for the hook, for example
 * "(int x,void *y)"
 * @param args_use The arguments for the hook as used in a call, for example
 * "(x,y)"
 * @param ok The "ok" return value
 * @param decline The "decline" return value
 * @return ok, decline or an error.
 * @note If IMPLEMENTing a hook that is not linked into the Apache core,
 * (e.g. within a dso) see APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL.
 */
#define AP_IMPLEMENT_HOOK_RUN_ALL(ret,name,args_decl,args_use,ok,decline) \
        APR_IMPLEMENT_EXTERNAL_HOOK_RUN_ALL(ap,AP,ret,name,args_decl, \
                                            args_use,ok,decline)

/**
 * Implement a hook that runs until a function returns something other than
 * decline. If all functions return decline, the hook runner returns decline.
 * The implementation is called ap_run_<i>name</i>.
 *
 * @param ret The return type of the hook (and the hook runner)
 * @param name The name of the hook
 * @param args_decl The declaration of the arguments for the hook, for example
 * "(int x,void *y)"
 * @param args_use The arguments for the hook as used in a call, for example
 * "(x,y)"
 * @param decline The "decline" return value
 * @return decline or an error.
 * @note If IMPLEMENTing a hook that is not linked into the Apache core
 * (e.g. within a dso) see APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST.
 */
#define AP_IMPLEMENT_HOOK_RUN_FIRST(ret,name,args_decl,args_use,decline) \
        APR_IMPLEMENT_EXTERNAL_HOOK_RUN_FIRST(ap,AP,ret,name,args_decl, \
                                              args_use,decline)

/* Note that the other optional hook implementations are straightforward but
 * have not yet been needed
 */

/**
 * Implement an optional hook. This is exactly the same as a standard hook
 * implementation, except the hook is optional.
 * @see AP_IMPLEMENT_HOOK_RUN_ALL
 */
#define AP_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ret,name,args_decl,args_use,ok, \
                                           decline) \
        APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ap,AP,ret,name,args_decl, \
                                            args_use,ok,decline)

/**
 * Hook an optional hook. Unlike static hooks, this uses a macro instead of a
 * function.
 */
#define AP_OPTIONAL_HOOK(name,fn,pre,succ,order) \
        APR_OPTIONAL_HOOK(ap,name,fn,pre,succ,order)

#endif /* AP_HOOKS_H */

Name	Size	Permission
.mmn	14 bytes	0644
ap_compat.h	1075 bytes	0644
ap_config.h	6606 bytes	0644
ap_config_auto.h	10148 bytes	0644
ap_config_layout.h	2581 bytes	0644
ap_expr.h	14076 bytes	0644
ap_hooks.h	5988 bytes	0644
ap_listen.h	5829 bytes	0644
ap_mmn.h	40271 bytes	0644
ap_mpm.h	10764 bytes	0644
ap_provider.h	3537 bytes	0644
ap_regex.h	11405 bytes	0644
ap_regkey.h	9183 bytes	0644
ap_release.h	3144 bytes	0644
ap_slotmem.h	7235 bytes	0644
ap_socache.h	9400 bytes	0644
apache_noprobes.h	15968 bytes	0644
cache_common.h	2017 bytes	0644
heartbeat.h	1595 bytes	0644
http_config.h	57718 bytes	0644
http_connection.h	7139 bytes	0644
http_core.h	37270 bytes	0644
http_log.h	36871 bytes	0644
http_main.h	3245 bytes	0644
http_protocol.h	42399 bytes	0644
http_request.h	26335 bytes	0644
http_ssl.h	14975 bytes	0644
http_vhost.h	4593 bytes	0644
httpd.h	96780 bytes	0644
mod_auth.h	4523 bytes	0644
mod_cache.h	7256 bytes	0644
mod_cgi.h	2496 bytes	0644
mod_core.h	3406 bytes	0644
mod_dav.h	100030 bytes	0644
mod_dbd.h	4154 bytes	0644
mod_http2.h	4696 bytes	0644
mod_include.h	3984 bytes	0644
mod_log_config.h	2485 bytes	0644
mod_proxy.h	67375 bytes	0644
mod_request.h	1628 bytes	0644
mod_rewrite.h	1397 bytes	0644
mod_session.h	6768 bytes	0644
mod_so.h	1226 bytes	0644
mod_ssl.h	4989 bytes	0644
mod_ssl_openssl.h	4911 bytes	0644
mod_status.h	2441 bytes	0644
mod_unixd.h	1114 bytes	0644
mod_watchdog.h	7518 bytes	0644
mod_xml2enc.h	2307 bytes	0644
mpm_common.h	17327 bytes	0644
os.h	1670 bytes	0644
scoreboard.h	10048 bytes	0644
unixd.h	4236 bytes	0644
util_cfgtree.h	3153 bytes	0644
util_charset.h	2267 bytes	0644
util_cookies.h	4961 bytes	0644
util_ebcdic.h	2752 bytes	0644
util_fcgi.h	9984 bytes	0644
util_filter.h	26459 bytes	0644
util_ldap.h	18375 bytes	0644
util_md5.h	2167 bytes	0644
util_mutex.h	9292 bytes	0644
util_script.h	9860 bytes	0644
util_time.h	4199 bytes	0644
util_varbuf.h	8286 bytes	0644
util_xml.h	1341 bytes	0644

File Content: ap_hooks.h

File Content: `ap_hooks.h`