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/*
* Copyright (C) Igor Sysoev
*/
#ifndef _NGX_HTTP_REQUEST_H_INCLUDED_
#define _NGX_HTTP_REQUEST_H_INCLUDED_
#define NGX_HTTP_MAX_REWRITE_CYCLES 10
#define NGX_HTTP_DISCARD_BUFFER_SIZE 4096
#define NGX_HTTP_LINGERING_BUFFER_SIZE 4096
#define NGX_HTTP_VERSION_9 9
#define NGX_HTTP_VERSION_10 1000
#define NGX_HTTP_VERSION_11 1001
#define NGX_HTTP_GET 1
#define NGX_HTTP_HEAD 2
#define NGX_HTTP_POST 3
#define NGX_HTTP_CONNECTION_CLOSE 1
#define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
#define NGX_NONE 1
#define NGX_HTTP_PARSE_HEADER_DONE 1
#define NGX_HTTP_CLIENT_ERROR 10
#define NGX_HTTP_PARSE_INVALID_METHOD 10
#define NGX_HTTP_PARSE_INVALID_REQUEST 11
#define NGX_HTTP_PARSE_INVALID_09_METHOD 12
#define NGX_HTTP_PARSE_HEADER_ERROR 13
#define NGX_HTTP_PARSE_INVALID_HEADER 13
#define NGX_HTTP_OK 200
#define NGX_HTTP_NO_CONTENT 204
#define NGX_HTTP_PARTIAL_CONTENT 206
#define NGX_HTTP_SPECIAL_RESPONSE 300
#define NGX_HTTP_MOVED_PERMANENTLY 301
#define NGX_HTTP_MOVED_TEMPORARILY 302
#define NGX_HTTP_NOT_MODIFIED 304
#define NGX_HTTP_BAD_REQUEST 400
#define NGX_HTTP_UNAUTHORIZED 401
#define NGX_HTTP_FORBIDDEN 403
#define NGX_HTTP_NOT_FOUND 404
#define NGX_HTTP_NOT_ALLOWED 405
#define NGX_HTTP_REQUEST_TIME_OUT 408
#define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
#define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
#define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
/* Our own HTTP codes */
#define NGX_HTTP_NGX_CODES NGX_HTTP_TO_HTTPS
/*
* We use the special code for the plain HTTP requests that are sent to
* HTTPS port to distinguish it from 4XX in an error page redirection
*/
#define NGX_HTTP_TO_HTTPS 497
/*
* We use the special code for the requests with invalid host name
* to distinguish it from 4XX in an error page redirection
*/
#define NGX_HTTP_INVALID_HOST 498
/*
* HTTP does not define the code for the case when a client closed
* the connection while we are processing its request so we introduce
* own code to log such situation when a client has closed the connection
* before we even try to send the HTTP header to it
*/
#define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
#define NGX_HTTP_INTERNAL_SERVER_ERROR 500
#define NGX_HTTP_NOT_IMPLEMENTED 501
#define NGX_HTTP_BAD_GATEWAY 502
#define NGX_HTTP_SERVICE_UNAVAILABLE 503
#define NGX_HTTP_GATEWAY_TIME_OUT 504
typedef enum {
NGX_HTTP_RESTRICT_HOST_OFF = 0,
NGX_HTTP_RESTRICT_HOST_ON,
NGX_HTTP_RESTRICT_HOST_CLOSE
} ngx_http_restrict_host_e;
typedef enum {
NGX_HTTP_INITING_REQUEST_STATE = 0,
NGX_HTTP_READING_REQUEST_STATE,
NGX_HTTP_PROCESS_REQUEST_STATE,
NGX_HTTP_CONNECT_UPSTREAM_STATE,
NGX_HTTP_WRITING_UPSTREAM_STATE,
NGX_HTTP_READING_UPSTREAM_STATE,
NGX_HTTP_WRITING_REQUEST_STATE,
NGX_HTTP_LINGERING_CLOSE_STATE,
NGX_HTTP_KEEPALIVE_STATE
} ngx_http_state_e;
typedef struct {
ngx_str_t name;
ngx_uint_t offset;
ngx_http_header_handler_pt handler;
} ngx_http_header_t;
typedef struct {
ngx_str_t name;
ngx_uint_t offset;
} ngx_http_header0_t;
typedef struct {
ngx_list_t headers;
ngx_table_elt_t *host;
ngx_table_elt_t *connection;
ngx_table_elt_t *if_modified_since;
ngx_table_elt_t *user_agent;
ngx_table_elt_t *referer;
ngx_table_elt_t *content_length;
ngx_table_elt_t *content_type;
ngx_table_elt_t *range;
#if (NGX_HTTP_GZIP)
ngx_table_elt_t *accept_encoding;
ngx_table_elt_t *via;
#endif
ngx_table_elt_t *authorization;
ngx_table_elt_t *keep_alive;
#if (NGX_HTTP_PROXY)
ngx_table_elt_t *x_forwarded_for;
ngx_table_elt_t *x_real_ip;
ngx_table_elt_t *x_url;
#endif
#if (NGX_HTTP_HEADERS)
ngx_table_elt_t *accept;
ngx_table_elt_t *accept_language;
#endif
ngx_str_t user;
ngx_str_t passwd;
ngx_array_t cookies;
size_t host_name_len;
ssize_t content_length_n;
time_t keep_alive_n;
unsigned connection_type:2;
unsigned msie:1;
unsigned msie4:1;
unsigned opera:1;
unsigned gecko:1;
unsigned konqueror:1;
} ngx_http_headers_in_t;
typedef struct {
off_t start;
off_t end;
ngx_str_t content_range;
} ngx_http_range_t;
typedef struct {
ngx_list_t headers;
ngx_uint_t status;
ngx_str_t status_line;
ngx_table_elt_t *server;
ngx_table_elt_t *date;
ngx_table_elt_t *content_length;
ngx_table_elt_t *content_encoding;
ngx_table_elt_t *location;
ngx_table_elt_t *last_modified;
ngx_table_elt_t *content_range;
ngx_table_elt_t *accept_ranges;
ngx_table_elt_t *www_authenticate;
ngx_table_elt_t *expires;
ngx_table_elt_t *etag;
ngx_str_t content_type;
ngx_str_t charset;
ngx_array_t ranges;
ngx_array_t cache_control;
off_t content_length_n;
time_t date_time;
time_t last_modified_time;
} ngx_http_headers_out_t;
typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r);
typedef struct {
ngx_temp_file_t *temp_file;
ngx_chain_t *bufs;
ngx_buf_t *buf;
size_t rest;
ngx_http_client_body_handler_pt post_handler;
} ngx_http_request_body_t;
typedef struct {
ngx_http_request_t *request;
ngx_buf_t **busy;
ngx_int_t nbusy;
ngx_buf_t **free;
ngx_int_t nfree;
ngx_uint_t pipeline; /* unsigned pipeline:1; */
} ngx_http_connection_t;
typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t;
struct ngx_http_postponed_request_s {
ngx_http_request_t *request;
ngx_chain_t *out;
ngx_http_postponed_request_t *next;
};
typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r);
struct ngx_http_request_s {
uint32_t signature; /* "HTTP" */
ngx_connection_t *connection;
void **ctx;
void **main_conf;
void **srv_conf;
void **loc_conf;
ngx_http_event_handler_pt read_event_handler;
ngx_http_event_handler_pt write_event_handler;
ngx_http_cache_t *cache;
ngx_http_upstream_t *upstream;
ngx_pool_t *pool;
ngx_buf_t *header_in;
ngx_http_headers_in_t headers_in;
ngx_http_headers_out_t headers_out;
ngx_http_request_body_t *request_body;
time_t lingering_time;
time_t start_time;
ngx_uint_t method;
ngx_uint_t http_version;
ngx_uint_t http_major;
ngx_uint_t http_minor;
ngx_str_t request_line;
ngx_str_t uri;
ngx_str_t args;
ngx_str_t exten;
ngx_str_t unparsed_uri;
ngx_str_t method_name;
ngx_str_t http_protocol;
ngx_chain_t *out;
ngx_http_request_t *main;
ngx_http_request_t *parent;
ngx_http_postponed_request_t *postponed;
uint32_t in_addr;
ngx_uint_t port;
ngx_str_t *port_text; /* ":80" */
ngx_str_t server_name;
ngx_http_in_addr_t *virtual_names;
ngx_uint_t phase;
ngx_int_t phase_handler;
ngx_http_handler_pt content_handler;
ngx_http_variable_value_t **variables;
/* used to learn the Apache compatible response length without a header */
size_t header_size;
size_t request_length;
void **err_ctx;
ngx_uint_t err_status;
ngx_http_connection_t *http_connection;
ngx_http_log_handler_pt log_handler;
unsigned http_state:4;
/* URI with "/." and on Win32 with "//" */
unsigned complex_uri:1;
/* URI with "%" */
unsigned quoted_uri:1;
/* URI with "+" */
unsigned plus_in_uri:1;
/* URI with "\0" or "%00" */
unsigned zero_in_uri:1;
unsigned invalid_header:1;
unsigned valid_location:1;
unsigned valid_unparsed_uri:1;
unsigned uri_changed:1;
unsigned uri_changes:4;
unsigned low_case_exten:1;
unsigned header_timeout_set:1;
unsigned proxy:1;
unsigned bypass_cache:1;
unsigned no_cache:1;
#if 0
unsigned cachable:1;
#endif
unsigned pipeline:1;
unsigned plain_http:1;
unsigned chunked:1;
unsigned header_only:1;
unsigned keepalive:1;
unsigned lingering_close:1;
unsigned internal:1;
unsigned closed:1;
unsigned done:1;
unsigned filter_need_in_memory:1;
unsigned filter_ssi_need_in_memory:1;
unsigned filter_need_temporary:1;
unsigned filter_allow_ranges:1;
#if (NGX_STAT_STUB)
unsigned stat_reading:1;
unsigned stat_writing:1;
#endif
/* used to parse HTTP headers */
ngx_uint_t state;
u_char *uri_start;
u_char *uri_end;
u_char *uri_ext;
u_char *args_start;
u_char *request_start;
u_char *request_end;
u_char *method_end;
u_char *schema_start;
u_char *schema_end;
u_char *host_start;
u_char *host_end;
u_char *port_start;
u_char *port_end;
u_char *header_name_start;
u_char *header_name_end;
u_char *header_start;
u_char *header_end;
ngx_uint_t header_hash;
};
extern ngx_http_header_t ngx_http_headers_in[];
extern ngx_http_header0_t ngx_http_headers_out[];
#endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */
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