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ngx_conf_file.h
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/*
* Copyright (C) Igor Sysoev
*/
#ifndef _NGX_HTTP_CONF_FILE_H_INCLUDED_
#define _NGX_HTTP_CONF_FILE_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
/*
* AAAA number of agruments
* FF command flags
* TT command type, i.e. HTTP "location" or "server" command
*/
#define NGX_CONF_NOARGS 0x00000001
#define NGX_CONF_TAKE1 0x00000002
#define NGX_CONF_TAKE2 0x00000004
#define NGX_CONF_TAKE3 0x00000008
#define NGX_CONF_TAKE4 0x00000010
#define NGX_CONF_TAKE5 0x00000020
#define NGX_CONF_TAKE6 0x00000040
#define NGX_CONF_TAKE7 0x00000080
#define NGX_CONF_TAKE12 (NGX_CONF_TAKE1|NGX_CONF_TAKE2)
#define NGX_CONF_TAKE13 (NGX_CONF_TAKE1|NGX_CONF_TAKE3)
#define NGX_CONF_TAKE23 (NGX_CONF_TAKE2|NGX_CONF_TAKE3)
#define NGX_CONF_TAKE1234 (NGX_CONF_TAKE1|NGX_CONF_TAKE2|NGX_CONF_TAKE3 \
|NGX_CONF_TAKE4)
#define NGX_CONF_ARGS_NUMBER 0x000000ff
#define NGX_CONF_BLOCK 0x00000100
#define NGX_CONF_FLAG 0x00000200
#define NGX_CONF_ANY 0x00000400
#define NGX_CONF_1MORE 0x00000800
#define NGX_CONF_2MORE 0x00001000
#define NGX_DIRECT_CONF 0x00010000
#define NGX_MAIN_CONF 0x01000000
#define NGX_ANY_CONF 0x0F000000
#define NGX_CONF_UNSET -1
#define NGX_CONF_UNSET_UINT (ngx_uint_t) -1
#define NGX_CONF_UNSET_PTR (void *) -1
#define NGX_CONF_UNSET_SIZE (size_t) -1
#define NGX_CONF_UNSET_MSEC (ngx_msec_t) -1
#define NGX_CONF_OK NULL
#define NGX_CONF_ERROR (void *) -1
#define NGX_CONF_BLOCK_DONE 1
#define NGX_CONF_FILE_DONE 2
#define NGX_MODULE 0, 0
#define NGX_CORE_MODULE 0x45524F43 /* "CORE" */
#define NGX_CONF_MODULE 0x464E4F43 /* "CONF" */
#define NGX_MAX_CONF_ERRSTR 256
struct ngx_command_s {
ngx_str_t name;
int type;
/*
牛逼设计
*/
char *(*set)(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
int conf;
int offset;
void *post;
};
#define ngx_null_command { ngx_null_string, 0, NULL, 0, 0, NULL }
struct ngx_open_file_s {
ngx_fd_t fd;
ngx_str_t name;
#if 0
/* e.g. append mode, error_log */
int flags;
/* e.g. reopen db file */
int (*handler)(void *data, ngx_open_file_t *file);
void *data;
#endif
};
/*
ngx_module_s的类型
*/
struct ngx_module_s {
/*
模块下标
*/
ngx_uint_t ctx_index;
/*对应模块在全局模块数组的下标
ngx_module[index]
*/
ngx_uint_t index;
/*
上下文设计
*/
void *ctx;
/*
命令指令
*/
ngx_command_t *commands;
/*
类型指令
*/
ngx_uint_t type;
/*
初始化module
*/
ngx_int_t (*init_module)(ngx_cycle_t *cycle);
/*
初始化进程
*/
ngx_int_t (*init_process)(ngx_cycle_t *cycle);
#if 0
ngx_int_t (*init_thread)(ngx_cycle_t *cycle);
#endif
};
/*
nginx核心模块类型
*/
typedef struct {
ngx_str_t name;
void *(*create_conf)(ngx_cycle_t *cycle);
char *(*init_conf)(ngx_cycle_t *cycle, void *conf);
} ngx_core_module_t;
/*
配置文件的核心结构设计
*/
typedef struct {
ngx_file_t file;
ngx_buf_t *buffer;
ngx_uint_t line;
} ngx_conf_file_t;
typedef char *(*ngx_conf_handler_pt)(ngx_conf_t *cf,
ngx_command_t *dummy, void *conf);
struct ngx_conf_s {
char *name;
ngx_array_t *args;
ngx_cycle_t *cycle;
ngx_pool_t *pool;
ngx_conf_file_t *conf_file;
ngx_log_t *log;
void *ctx;
ngx_uint_t module_type;
ngx_uint_t cmd_type;
ngx_conf_handler_pt handler;
char *handler_conf;
};
typedef char *(*ngx_conf_post_handler_pt) (ngx_conf_t *cf,
void *data, void *conf);
typedef struct {
ngx_conf_post_handler_pt post_handler;
} ngx_conf_post_t;
typedef struct {
ngx_conf_post_handler_pt post_handler;
int low;
int high;
} ngx_conf_num_bounds_t;
typedef struct {
ngx_str_t name;
ngx_uint_t value;
} ngx_conf_enum_t;
#define NGX_CONF_BITMASK_SET 1
typedef struct {
ngx_str_t name;
ngx_uint_t mask;
} ngx_conf_bitmask_t;
char *ngx_conf_check_num_bounds(ngx_conf_t *cf, void *post, void *data);
#define ngx_get_conf(conf_ctx, module) conf_ctx[module.index]
#define ngx_conf_init_value(conf, default) \
if (conf == NGX_CONF_UNSET) { \
conf = default; \
}
#define ngx_conf_init_ptr_value(conf, default) \
if (conf == NGX_CONF_UNSET_PTR) { \
conf = default; \
}
#define ngx_conf_init_unsigned_value(conf, default) \
if (conf == (unsigned) NGX_CONF_UNSET) { \
conf = default; \
}
#define ngx_conf_init_size_value(conf, default) \
if (conf == NGX_CONF_UNSET_SIZE) { \
conf = default; \
}
#define ngx_conf_init_msec_value(conf, default) \
if (conf == NGX_CONF_UNSET_MSEC) { \
conf = default; \
}
#define ngx_conf_merge_value(conf, prev, default) \
if (conf == NGX_CONF_UNSET) { \
conf = (prev == NGX_CONF_UNSET) ? default : prev; \
}
#define ngx_conf_merge_ptr_value(conf, prev, default) \
if (conf == NULL) { \
conf = (prev == NULL) ? default : prev; \
}
#define ngx_conf_merge_unsigned_value(conf, prev, default) \
if (conf == NGX_CONF_UNSET_UINT) { \
conf = (prev == NGX_CONF_UNSET_UINT) ? default : prev; \
}
#define ngx_conf_merge_msec_value(conf, prev, default) \
if (conf == NGX_CONF_UNSET_MSEC) { \
conf = (prev == NGX_CONF_UNSET_MSEC) ? default : prev; \
}
#define ngx_conf_merge_sec_value(conf, prev, default) \
if (conf == NGX_CONF_UNSET) { \
conf = (prev == NGX_CONF_UNSET) ? default : prev; \
}
#define ngx_conf_merge_size_value(conf, prev, default) \
if (conf == NGX_CONF_UNSET_SIZE) { \
conf = (prev == NGX_CONF_UNSET_SIZE) ? default : prev; \
}
#define ngx_conf_merge_str_value(conf, prev, default) \
if (conf.len == 0) { \
if (prev.len) { \
conf.len = prev.len; \
conf.data = prev.data; \
} else { \
conf.len = sizeof(default) - 1; \
conf.data = (u_char *) default; \
} \
}
#define ngx_conf_merge_bufs_value(conf, prev, default_num, default_size) \
if (conf.num == 0) { \
if (prev.num) { \
conf.num = prev.num; \
conf.size = prev.size; \
} else { \
conf.num = default_num; \
conf.size = default_size; \
} \
}
#define ngx_conf_merge_bitmask_value(conf, prev, default) \
if (conf == 0) { \
conf = (prev == 0) ? default : prev; \
}
#define addressof(addr) ((int) &addr)
char *ngx_conf_parse(ngx_conf_t *cf, ngx_str_t *filename);
ngx_int_t ngx_conf_full_name(ngx_cycle_t *cycle, ngx_str_t *name);
ngx_open_file_t *ngx_conf_open_file(ngx_cycle_t *cycle, ngx_str_t *name);
void ngx_conf_log_error(ngx_uint_t level, ngx_conf_t *cf, ngx_err_t err,
char *fmt, ...);
char *ngx_conf_set_flag_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_str_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_num_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_size_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_msec_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_sec_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_bufs_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_enum_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
char *ngx_conf_set_bitmask_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
extern ngx_uint_t ngx_max_module;
/*
全局模块设计
*/
extern ngx_module_t *ngx_modules[];
#endif /* _NGX_HTTP_CONF_FILE_H_INCLUDED_ */