mirror of
https://github.com/nginx/nginx.git
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540 lines
18 KiB
C
540 lines
18 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#ifndef _NGX_HTTP_REQUEST_H_INCLUDED_
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#define _NGX_HTTP_REQUEST_H_INCLUDED_
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#define NGX_HTTP_MAX_URI_CHANGES 10
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#define NGX_HTTP_MAX_SUBREQUESTS 50
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#define NGX_HTTP_MAX_CAPTURES 9
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/* must be 2^n */
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#define NGX_HTTP_LC_HEADER_LEN 32
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#define NGX_HTTP_DISCARD_BUFFER_SIZE 4096
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#define NGX_HTTP_LINGERING_BUFFER_SIZE 4096
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#define NGX_HTTP_VERSION_9 9
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#define NGX_HTTP_VERSION_10 1000
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#define NGX_HTTP_VERSION_11 1001
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#define NGX_HTTP_UNKNOWN 0x0001
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#define NGX_HTTP_GET 0x0002
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#define NGX_HTTP_HEAD 0x0004
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#define NGX_HTTP_POST 0x0008
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#define NGX_HTTP_PUT 0x0010
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#define NGX_HTTP_DELETE 0x0020
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#define NGX_HTTP_MKCOL 0x0040
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#define NGX_HTTP_COPY 0x0080
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#define NGX_HTTP_MOVE 0x0100
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#define NGX_HTTP_OPTIONS 0x0200
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#define NGX_HTTP_PROPFIND 0x0400
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#define NGX_HTTP_PROPPATCH 0x0800
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#define NGX_HTTP_LOCK 0x1000
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#define NGX_HTTP_UNLOCK 0x2000
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#define NGX_HTTP_TRACE 0x4000
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#define NGX_HTTP_CONNECTION_CLOSE 1
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#define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
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#define NGX_NONE 1
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#define NGX_HTTP_PARSE_HEADER_DONE 1
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#define NGX_HTTP_CLIENT_ERROR 10
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#define NGX_HTTP_PARSE_INVALID_METHOD 10
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#define NGX_HTTP_PARSE_INVALID_REQUEST 11
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#define NGX_HTTP_PARSE_INVALID_09_METHOD 12
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#define NGX_HTTP_PARSE_INVALID_HEADER 13
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#define NGX_HTTP_ZERO_IN_URI 1
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#define NGX_HTTP_SUBREQUEST_IN_MEMORY 2
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#define NGX_HTTP_SUBREQUEST_WAITED 4
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#define NGX_HTTP_OK 200
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#define NGX_HTTP_CREATED 201
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#define NGX_HTTP_NO_CONTENT 204
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#define NGX_HTTP_PARTIAL_CONTENT 206
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#define NGX_HTTP_SPECIAL_RESPONSE 300
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#define NGX_HTTP_MOVED_PERMANENTLY 301
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#define NGX_HTTP_MOVED_TEMPORARILY 302
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#define NGX_HTTP_NOT_MODIFIED 304
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#define NGX_HTTP_BAD_REQUEST 400
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#define NGX_HTTP_UNAUTHORIZED 401
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#define NGX_HTTP_FORBIDDEN 403
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#define NGX_HTTP_NOT_FOUND 404
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#define NGX_HTTP_NOT_ALLOWED 405
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#define NGX_HTTP_REQUEST_TIME_OUT 408
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#define NGX_HTTP_CONFLICT 409
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#define NGX_HTTP_LENGTH_REQUIRED 411
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#define NGX_HTTP_PRECONDITION_FAILED 412
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#define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
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#define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
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#define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE 415
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#define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
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/* Our own HTTP codes */
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/* The special code to close connection without any response */
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#define NGX_HTTP_CLOSE 444
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#define NGX_HTTP_OWN_CODES 495
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#define NGX_HTTPS_CERT_ERROR 495
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#define NGX_HTTPS_NO_CERT 496
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/*
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* We use the special code for the plain HTTP requests that are sent to
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* HTTPS port to distinguish it from 4XX in an error page redirection
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*/
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#define NGX_HTTP_TO_HTTPS 497
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/* 498 is the canceled code for the requests with invalid host name */
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/*
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* HTTP does not define the code for the case when a client closed
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* the connection while we are processing its request so we introduce
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* own code to log such situation when a client has closed the connection
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* before we even try to send the HTTP header to it
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*/
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#define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
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#define NGX_HTTP_INTERNAL_SERVER_ERROR 500
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#define NGX_HTTP_NOT_IMPLEMENTED 501
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#define NGX_HTTP_BAD_GATEWAY 502
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#define NGX_HTTP_SERVICE_UNAVAILABLE 503
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#define NGX_HTTP_GATEWAY_TIME_OUT 504
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#define NGX_HTTP_INSUFFICIENT_STORAGE 507
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#define NGX_HTTP_LOWLEVEL_BUFFERED 0xf0
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#define NGX_HTTP_WRITE_BUFFERED 0x10
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#define NGX_HTTP_GZIP_BUFFERED 0x20
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#define NGX_HTTP_SSI_BUFFERED 0x01
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#define NGX_HTTP_SUB_BUFFERED 0x02
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#define NGX_HTTP_COPY_BUFFERED 0x04
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typedef enum {
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NGX_HTTP_INITING_REQUEST_STATE = 0,
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NGX_HTTP_READING_REQUEST_STATE,
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NGX_HTTP_PROCESS_REQUEST_STATE,
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NGX_HTTP_CONNECT_UPSTREAM_STATE,
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NGX_HTTP_WRITING_UPSTREAM_STATE,
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NGX_HTTP_READING_UPSTREAM_STATE,
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NGX_HTTP_WRITING_REQUEST_STATE,
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NGX_HTTP_LINGERING_CLOSE_STATE,
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NGX_HTTP_KEEPALIVE_STATE
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} ngx_http_state_e;
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typedef struct {
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ngx_str_t name;
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ngx_uint_t offset;
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ngx_http_header_handler_pt handler;
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} ngx_http_header_t;
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typedef struct {
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ngx_str_t name;
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ngx_uint_t offset;
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} ngx_http_header_out_t;
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typedef struct {
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ngx_list_t headers;
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ngx_table_elt_t *host;
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ngx_table_elt_t *connection;
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ngx_table_elt_t *if_modified_since;
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ngx_table_elt_t *user_agent;
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ngx_table_elt_t *referer;
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ngx_table_elt_t *content_length;
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ngx_table_elt_t *content_type;
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ngx_table_elt_t *range;
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ngx_table_elt_t *if_range;
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ngx_table_elt_t *transfer_encoding;
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ngx_table_elt_t *expect;
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#if (NGX_HTTP_GZIP)
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ngx_table_elt_t *accept_encoding;
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ngx_table_elt_t *via;
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#endif
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ngx_table_elt_t *authorization;
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ngx_table_elt_t *keep_alive;
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#if (NGX_HTTP_PROXY || NGX_HTTP_REALIP)
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ngx_table_elt_t *x_forwarded_for;
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#endif
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#if (NGX_HTTP_REALIP)
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ngx_table_elt_t *x_real_ip;
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#endif
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#if (NGX_HTTP_HEADERS)
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ngx_table_elt_t *accept;
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ngx_table_elt_t *accept_language;
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#endif
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#if (NGX_HTTP_DAV)
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ngx_table_elt_t *depth;
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ngx_table_elt_t *destination;
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ngx_table_elt_t *overwrite;
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ngx_table_elt_t *date;
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#endif
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ngx_str_t user;
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ngx_str_t passwd;
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ngx_array_t cookies;
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ngx_str_t server;
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off_t content_length_n;
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time_t keep_alive_n;
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unsigned connection_type:2;
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unsigned msie:1;
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unsigned msie4:1;
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unsigned msie6:1;
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unsigned opera:1;
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unsigned gecko:1;
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unsigned konqueror:1;
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} ngx_http_headers_in_t;
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typedef struct {
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ngx_list_t headers;
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ngx_uint_t status;
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ngx_str_t status_line;
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ngx_table_elt_t *server;
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ngx_table_elt_t *date;
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ngx_table_elt_t *content_length;
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ngx_table_elt_t *content_encoding;
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ngx_table_elt_t *location;
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ngx_table_elt_t *refresh;
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ngx_table_elt_t *last_modified;
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ngx_table_elt_t *content_range;
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ngx_table_elt_t *accept_ranges;
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ngx_table_elt_t *www_authenticate;
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ngx_table_elt_t *expires;
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ngx_table_elt_t *etag;
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ngx_str_t *override_charset;
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size_t content_type_len;
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ngx_str_t content_type;
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ngx_str_t charset;
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u_char *content_type_lowcase;
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ngx_uint_t content_type_hash;
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ngx_array_t cache_control;
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off_t content_length_n;
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time_t date_time;
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time_t last_modified_time;
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} ngx_http_headers_out_t;
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typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r);
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typedef struct {
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ngx_temp_file_t *temp_file;
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ngx_chain_t *bufs;
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ngx_buf_t *buf;
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off_t rest;
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ngx_chain_t *to_write;
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ngx_http_client_body_handler_pt post_handler;
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} ngx_http_request_body_t;
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typedef struct {
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ngx_http_request_t *request;
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ngx_buf_t **busy;
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ngx_int_t nbusy;
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ngx_buf_t **free;
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ngx_int_t nfree;
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ngx_uint_t pipeline; /* unsigned pipeline:1; */
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} ngx_http_connection_t;
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typedef struct ngx_http_server_name_s ngx_http_server_name_t;
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typedef struct {
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ngx_hash_combined_t names;
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ngx_uint_t nregex;
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ngx_http_server_name_t *regex;
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} ngx_http_virtual_names_t;
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typedef void (*ngx_http_cleanup_pt)(void *data);
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typedef struct ngx_http_cleanup_s ngx_http_cleanup_t;
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struct ngx_http_cleanup_s {
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ngx_http_cleanup_pt handler;
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void *data;
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ngx_http_cleanup_t *next;
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};
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typedef ngx_int_t (*ngx_http_post_subrequest_pt)(ngx_http_request_t *r,
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void *data, ngx_int_t rc);
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typedef struct {
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ngx_http_post_subrequest_pt handler;
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void *data;
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} ngx_http_post_subrequest_t;
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typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t;
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struct ngx_http_postponed_request_s {
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ngx_http_request_t *request;
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ngx_chain_t *out;
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ngx_http_postponed_request_t *next;
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};
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typedef struct ngx_http_posted_request_s ngx_http_posted_request_t;
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struct ngx_http_posted_request_s {
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ngx_http_request_t *request;
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ngx_http_posted_request_t *next;
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};
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typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
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typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r);
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struct ngx_http_request_s {
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uint32_t signature; /* "HTTP" */
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ngx_connection_t *connection;
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void **ctx;
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void **main_conf;
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void **srv_conf;
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void **loc_conf;
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ngx_http_event_handler_pt read_event_handler;
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ngx_http_event_handler_pt write_event_handler;
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#if (NGX_HTTP_CACHE)
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ngx_http_cache_t *cache;
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#endif
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ngx_http_upstream_t *upstream;
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ngx_array_t *upstream_states;
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/* of ngx_http_upstream_state_t */
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ngx_pool_t *pool;
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ngx_buf_t *header_in;
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ngx_http_headers_in_t headers_in;
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ngx_http_headers_out_t headers_out;
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ngx_http_request_body_t *request_body;
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time_t lingering_time;
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time_t start_sec;
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ngx_msec_t start_msec;
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ngx_uint_t method;
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ngx_uint_t http_version;
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ngx_str_t request_line;
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ngx_str_t uri;
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ngx_str_t args;
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ngx_str_t exten;
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ngx_str_t unparsed_uri;
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ngx_str_t method_name;
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ngx_str_t http_protocol;
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ngx_chain_t *out;
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ngx_http_request_t *main;
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ngx_http_request_t *parent;
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ngx_http_postponed_request_t *postponed;
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ngx_http_post_subrequest_t *post_subrequest;
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ngx_http_posted_request_t *posted_requests;
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ngx_http_virtual_names_t *virtual_names;
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ngx_int_t phase_handler;
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ngx_http_handler_pt content_handler;
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ngx_uint_t access_code;
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ngx_http_variable_value_t *variables;
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#if (NGX_PCRE)
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ngx_uint_t ncaptures;
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int *captures;
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u_char *captures_data;
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#endif
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size_t limit_rate;
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/* used to learn the Apache compatible response length without a header */
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size_t header_size;
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off_t request_length;
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ngx_uint_t err_status;
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ngx_http_connection_t *http_connection;
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ngx_http_log_handler_pt log_handler;
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ngx_http_cleanup_t *cleanup;
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unsigned http_state:4;
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/* URI with "/." and on Win32 with "//" */
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unsigned complex_uri:1;
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/* URI with "%" */
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unsigned quoted_uri:1;
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/* URI with "+" */
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unsigned plus_in_uri:1;
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/* URI with "\0" or "%00" */
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unsigned zero_in_uri:1;
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unsigned invalid_header:1;
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unsigned valid_location:1;
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unsigned valid_unparsed_uri:1;
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unsigned uri_changed:1;
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unsigned uri_changes:4;
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unsigned request_body_in_single_buf:1;
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unsigned request_body_in_file_only:1;
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unsigned request_body_in_persistent_file:1;
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unsigned request_body_in_clean_file:1;
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unsigned request_body_file_group_access:1;
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unsigned request_body_file_log_level:3;
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unsigned subrequest_in_memory:1;
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unsigned waited:1;
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#if (NGX_HTTP_CACHE)
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unsigned cached:1;
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#endif
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unsigned gzip:2;
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unsigned proxy:1;
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unsigned bypass_cache:1;
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unsigned no_cache:1;
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/*
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* instead of using the request context data in
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* ngx_http_limit_zone_module and ngx_http_limit_req_module
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* we use the single bits in the request structure
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*/
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unsigned limit_zone_set:1;
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unsigned limit_req_set:1;
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#if 0
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unsigned cacheable:1;
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#endif
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unsigned pipeline:1;
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unsigned plain_http:1;
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unsigned chunked:1;
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unsigned header_only:1;
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unsigned zero_body:1;
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unsigned keepalive:1;
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unsigned lingering_close:1;
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unsigned discard_body:1;
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unsigned internal:1;
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unsigned error_page:1;
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unsigned post_action:1;
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unsigned request_complete:1;
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unsigned request_output:1;
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unsigned header_sent:1;
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unsigned expect_tested:1;
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unsigned root_tested:1;
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unsigned done:1;
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unsigned logged:1;
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unsigned utf8:1;
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unsigned buffered:4;
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unsigned main_filter_need_in_memory:1;
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unsigned filter_need_in_memory:1;
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unsigned filter_need_temporary:1;
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unsigned allow_ranges:1;
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#if (NGX_STAT_STUB)
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unsigned stat_reading:1;
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unsigned stat_writing:1;
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#endif
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unsigned subrequests:8;
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/* used to parse HTTP headers */
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ngx_uint_t state;
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u_char *uri_start;
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u_char *uri_end;
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u_char *uri_ext;
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u_char *args_start;
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u_char *request_start;
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u_char *request_end;
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u_char *method_end;
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u_char *schema_start;
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u_char *schema_end;
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u_char *host_start;
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u_char *host_end;
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u_char *port_start;
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u_char *port_end;
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u_char *header_name_start;
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u_char *header_name_end;
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u_char *header_start;
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u_char *header_end;
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unsigned http_minor:16;
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unsigned http_major:16;
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ngx_uint_t header_hash;
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ngx_uint_t lowcase_index;
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u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN];
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};
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extern ngx_http_header_t ngx_http_headers_in[];
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extern ngx_http_header_out_t ngx_http_headers_out[];
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#endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */
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