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/**
* 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.
*/
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#include "httpd.h"
#include "apr_thread_rwlock.h"
#include "apr_strings.h"
#include "apr_tables.h"
#include "apr_hash.h"
#include "apr_buckets.h"
#include "apr_file_info.h"
#include "apr_time.h"
#include "apr_pools.h"
#include "apr_reslist.h"
#ifndef VMPREP_H
#define VMPREP_H
#define AP_LUA_SCOPE_UNSET 0
#define AP_LUA_SCOPE_ONCE 1
#define AP_LUA_SCOPE_REQUEST 2
#define AP_LUA_SCOPE_CONN 3
#define AP_LUA_SCOPE_THREAD 4
#define AP_LUA_SCOPE_SERVER 5
#define AP_LUA_CACHE_UNSET 0
#define AP_LUA_CACHE_NEVER 1
#define AP_LUA_CACHE_STAT 2
#define AP_LUA_CACHE_FOREVER 3
#define AP_LUA_FILTER_INPUT 1
#define AP_LUA_FILTER_OUTPUT 2
typedef void (*ap_lua_state_open_callback) (lua_State *L, apr_pool_t *p,
void *ctx);
/**
* Specification for a lua virtual machine
*/
typedef struct
{
/* NEED TO ADD ADDITIONAL PACKAGE PATHS AS PART OF SPEC INSTEAD OF DIR CONFIG */
apr_array_header_t *package_paths;
apr_array_header_t *package_cpaths;
/* name of base file to load in the vm */
const char *file;
/* APL_SCOPE_ONCE | APL_SCOPE_REQUEST | APL_SCOPE_CONN | APL_SCOPE_THREAD | APL_SCOPE_SERVER */
int scope;
unsigned int vm_min;
unsigned int vm_max;
ap_lua_state_open_callback cb;
void* cb_arg;
/* pool to use for lifecycle if APL_SCOPE_ONCE is set, otherwise unused */
apr_pool_t *pool;
/* Pre-compiled Lua Byte code to load directly. If bytecode_len is >0,
* the file part of this structure is ignored for loading purposes, but
* it is used for error messages.
*/
const char *bytecode;
apr_size_t bytecode_len;
int codecache;
} ap_lua_vm_spec;
typedef struct
{
const char *function_name;
const char *file_name;
int scope;
ap_regex_t *uri_pattern;
const char *bytecode;
apr_size_t bytecode_len;
int codecache;
} ap_lua_mapped_handler_spec;
typedef struct
{
const char *function_name;
const char *file_name;
const char* filter_name;
int direction; /* AP_LUA_FILTER_INPUT | AP_LUA_FILTER_OUTPUT */
} ap_lua_filter_handler_spec;
typedef struct {
apr_size_t runs;
apr_time_t modified;
apr_off_t size;
} ap_lua_finfo;
typedef struct {
lua_State* L;
ap_lua_finfo* finfo;
} ap_lua_server_spec;
/**
* Fake out addition of the "apache2" module
*/
void ap_lua_load_apache2_lmodule(lua_State *L);
/*
* alternate means of getting lua_State (preferred eventually)
* Obtain a lua_State which has loaded file and is associated with lifecycle_pool
* If one exists, will return extant one, otherwise will create, attach, and return
* This does no locking around the lua_State, so if the pool is shared between
* threads, locking is up the client.
*
* @lifecycle_pool -> pool whose lifeycle controls the lua_State
* @file file to be opened, also used as a key for uniquing lua_States
* @cb callback for vm initialization called *before* the file is opened
* @ctx a baton passed to cb
*/
lua_State *ap_lua_get_lua_state(apr_pool_t *lifecycle_pool,
ap_lua_vm_spec *spec, request_rec* r);
#if APR_HAS_THREADS || defined(DOXYGEN)
/*
* Initialize mod_lua mutex.
* @pool pool for mutex
* @s server_rec for logging
*/
void ap_lua_init_mutex(apr_pool_t *pool, server_rec *s);
#endif
#endif