| |
| /* |
| * 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_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_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_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 0x000000f0 |
| #define NGX_HTTP_WRITE_BUFFERED 0x00000010 |
| #define NGX_HTTP_GZIP_BUFFERED 0x00000020 |
| #define NGX_HTTP_SSI_BUFFERED 0x00000100 |
| #define NGX_HTTP_COPY_BUFFERED 0x00000200 |
| |
| |
| 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 *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 { |
| 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 *override_charset; |
| |
| size_t content_type_len; |
| 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; |
| 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_hash_t hash; |
| ngx_hash_wildcard_t *dns_wildcards; |
| } 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 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_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 root_length; |
| |
| 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_delete_incomplete_file:1; |
| unsigned request_body_file_group_access:1; |
| unsigned request_body_file_log_level:3; |
| |
| unsigned fast_subrequest: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 |
| |
| #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 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 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; |
| |
| 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_ */ |
