/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_HTTP_REQUEST_H_INCLUDED_ #define _NGX_HTTP_REQUEST_H_INCLUDED_ #define NGX_HTTP_MAX_URI_CHANGES 10 #define NGX_HTTP_MAX_SUBREQUESTS 50 /* must be 2^n */ #define NGX_HTTP_LC_HEADER_LEN 32 #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_UNKNOWN 0x0001 #define NGX_HTTP_GET 0x0002 #define NGX_HTTP_HEAD 0x0004 #define NGX_HTTP_POST 0x0008 #define NGX_HTTP_PUT 0x0010 #define NGX_HTTP_DELETE 0x0020 #define NGX_HTTP_MKCOL 0x0040 #define NGX_HTTP_COPY 0x0080 #define NGX_HTTP_MOVE 0x0100 #define NGX_HTTP_OPTIONS 0x0200 #define NGX_HTTP_PROPFIND 0x0400 #define NGX_HTTP_PROPPATCH 0x0800 #define NGX_HTTP_LOCK 0x1000 #define NGX_HTTP_UNLOCK 0x2000 #define NGX_HTTP_TRACE 0x4000 #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_INVALID_HEADER 13 #define NGX_HTTP_ZERO_IN_URI 1 #define NGX_HTTP_SUBREQUEST_IN_MEMORY 2 #define NGX_HTTP_OK 200 #define NGX_HTTP_CREATED 201 #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_CONFLICT 409 #define NGX_HTTP_LENGTH_REQUIRED 411 #define NGX_HTTP_PRECONDITION_FAILED 412 #define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413 #define NGX_HTTP_REQUEST_URI_TOO_LARGE 414 #define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE 415 #define NGX_HTTP_RANGE_NOT_SATISFIABLE 416 /* Our own HTTP codes */ /* The special code to close connection without any response */ #define NGX_HTTP_CLOSE 444 #define NGX_HTTP_OWN_CODES 495 #define NGX_HTTPS_CERT_ERROR 495 #define NGX_HTTPS_NO_CERT 496 /* * 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 /* 498 is the canceled code for the requests with invalid host name */ /* * 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 #define NGX_HTTP_INSUFFICIENT_STORAGE 507 #define NGX_HTTP_LOWLEVEL_BUFFERED 0xf0 #define NGX_HTTP_WRITE_BUFFERED 0x10 #define NGX_HTTP_GZIP_BUFFERED 0x20 #define NGX_HTTP_SSI_BUFFERED 0x01 #define NGX_HTTP_SUB_BUFFERED 0x02 #define NGX_HTTP_COPY_BUFFERED 0x04 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_header_out_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; ngx_table_elt_t *transfer_encoding; #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_HTTP_REALIP) ngx_table_elt_t *x_forwarded_for; #endif #if (NGX_HTTP_REALIP) ngx_table_elt_t *x_real_ip; #endif #if (NGX_HTTP_HEADERS) ngx_table_elt_t *accept; ngx_table_elt_t *accept_language; #endif #if (NGX_HTTP_DAV) ngx_table_elt_t *depth; ngx_table_elt_t *destination; ngx_table_elt_t *overwrite; ngx_table_elt_t *date; #endif ngx_str_t user; ngx_str_t passwd; ngx_array_t cookies; size_t host_name_len; off_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 { 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 *override_charset; size_t content_type_len; ngx_str_t content_type; ngx_str_t charset; 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; off_t rest; ngx_chain_t *to_write; 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_server_name_s ngx_http_server_name_t; typedef struct { ngx_hash_combined_t names; ngx_uint_t nregex; ngx_http_server_name_t *regex; } ngx_http_virtual_names_t; typedef void (*ngx_http_cleanup_pt)(void *data); typedef struct ngx_http_cleanup_s ngx_http_cleanup_t; struct ngx_http_cleanup_s { ngx_http_cleanup_pt handler; void *data; ngx_http_cleanup_t *next; }; typedef ngx_int_t (*ngx_http_post_subrequest_pt)(ngx_http_request_t *r, void *data, ngx_int_t rc); typedef struct { ngx_http_post_subrequest_pt handler; void *data; } ngx_http_post_subrequest_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_array_t *upstream_states; /* of ngx_http_upstream_state_t */ 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_sec; ngx_msec_t start_msec; ngx_uint_t method; ngx_uint_t http_version; 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; ngx_http_post_subrequest_t *post_subrequest; uint32_t in_addr; ngx_uint_t port; ngx_str_t *port_text; /* ":80" */ ngx_str_t server_name; ngx_http_virtual_names_t *virtual_names; ngx_int_t phase_handler; ngx_http_handler_pt content_handler; ngx_uint_t access_code; ngx_http_variable_value_t *variables; size_t limit_rate; /* used to learn the Apache compatible response length without a header */ size_t header_size; off_t request_length; ngx_uint_t err_status; ngx_http_connection_t *http_connection; ngx_http_log_handler_pt log_handler; ngx_http_cleanup_t *cleanup; 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 request_body_in_single_buf:1; unsigned request_body_in_file_only:1; unsigned request_body_in_persistent_file:1; unsigned request_body_in_clean_file:1; unsigned request_body_file_group_access:1; unsigned request_body_file_log_level:3; unsigned fast_subrequest:1; unsigned subrequest_in_memory:1; unsigned header_timeout_set:1; unsigned proxy:1; unsigned bypass_cache:1; unsigned no_cache:1; #if (NGX_HTTP_REALIP) /* * instead of using the request context data in ngx_http_realip_module * we use the single bit in the request structure */ unsigned realip_set:1; #endif /* * instead of using the request context data in ngx_http_limit_zone_module * we use the single bit in the request structure */ unsigned limit_zone_set:1; #if 0 unsigned cachable:1; #endif unsigned pipeline:1; unsigned plain_http:1; unsigned chunked:1; unsigned header_only:1; unsigned zero_body:1; unsigned keepalive:1; unsigned lingering_close:1; unsigned discard_body:1; unsigned internal:1; unsigned error_page:1; unsigned post_action:1; unsigned request_complete:1; unsigned request_output:1; unsigned header_sent:1; unsigned done:1; unsigned utf8:1; unsigned buffered:4; unsigned main_filter_need_in_memory:1; unsigned filter_need_in_memory:1; unsigned filter_need_temporary:1; unsigned allow_ranges:1; #if (NGX_STAT_STUB) unsigned stat_reading:1; unsigned stat_writing:1; #endif unsigned subrequests:8; /* 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; unsigned http_minor:16; unsigned http_major:16; ngx_uint_t header_hash; ngx_uint_t lowcase_index; u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN]; }; extern ngx_http_header_t ngx_http_headers_in[]; extern ngx_http_header_out_t ngx_http_headers_out[]; #endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */