http_request.h revision b99dbaab171d91e1b664397cc40e039d0c087c65
/* ====================================================================
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*/
#ifndef APACHE_HTTP_REQUEST_H
#define APACHE_HTTP_REQUEST_H
#include "apr_hooks.h"
#include "util_filter.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @package Apache Request library
*/
/* http_request.c is the code which handles the main line of request
* processing, once a request has been read in (finding the right per-
* directory configuration, building it if necessary, and calling all
* the module dispatch functions in the right order).
*
* The pieces here which are public to the modules, allow them to learn
* how the server would handle some other file or URI, or perhaps even
* direct the server to serve that other file instead of the one the
* client requested directly.
*
* There are two ways to do that. The first is the sub_request mechanism,
* which handles looking up files and URIs as adjuncts to some other
* request (e.g., directory entries for multiviews and directory listings);
* the lookup functions stop short of actually running the request, but
* (e.g., for includes), a module may call for the request to be run
* by calling run_sub_req. The space allocated to create sub_reqs can be
* reclaimed by calling destroy_sub_req --- be sure to copy anything you care
* about which was allocated in its apr_pool_t elsewhere before doing this.
*/
/**
* Create a sub request from the given URI. This sub request can be
* inspected to find information about the requested URI
* @param new_file The URI to lookup
* @param r The current request
* @param next_filter The first filter the sub_request should use. If this is
* NULL, it defaults to the first filter for the main request
* @return The new request record
* @deffunc request_rec * ap_sub_req_lookup_uri(const char *new_file, const request_rec *r)
*/
const request_rec *r,
/**
* Create a sub request for the given file. This sub request can be
* inspected to find information about the requested file
* @param new_file The URI to lookup
* @param r The current request
* @param next_filter The first filter the sub_request should use. If this is
* NULL, it defaults to the first filter for the main request
* @return The new request record
* @deffunc request_rec * ap_sub_req_lookup_file(const char *new_file, const request_rec *r)
*/
const request_rec *r,
/**
* Create a sub request for the given URI using a specific method. This
* sub request can be inspected to find information about the requested URI
* @param method The method to use in the new sub request
* @param new_file The URI to lookup
* @param r The current request
* @param next_filter The first filter the sub_request should use. If this is
* NULL, it defaults to the first filter for the main request
* @return The new request record
* @deffunc request_rec * ap_sub_req_method_uri(const char *method, const char *new_file, const request_rec *r)
*/
const char *new_file,
const request_rec *r,
/**
* An output filter to strip EOS buckets from sub-requests. This always
* has to be inserted at the end of a sub-requests filter stack.
* @param f The current filter
* @param bb The brigade to filter
* @deffunc apr_status_t ap_sub_req_output_filter(ap_filter_t *f, apr_bucket_brigade *bb)
*/
/**
* Run the handler for the sub request
* @param r The sub request to run
* @return The return code for the sub request
* @deffunc int ap_run_sub_req(request_rec *r)
*/
/**
* Free the memory associated with a sub request
* @param r The sub request to finish
* @deffunc void ap_destroy_sub_req(request_rec *r)
*/
/*
* Then there's the case that you want some other request to be served
* as the top-level request INSTEAD of what the client requested directly.
* If so, call this from a handler, and then immediately return OK.
*/
/**
* Redirect the current request to some other uri
* @param new_uri The URI to replace the current request with
* @param r The current request
* @deffunc void ap_internal_redirect(const char *new_uri, request_rec *r)
*/
/**
* This function is designed for things like actions or CGI scripts, when
* using AddHandler, and you want to preserve the content type across
* an internal redirect.
* @param new_uri The URI to replace the current request with.
* @param r The current request
* @deffunc void ap_internal_redirect_handler(const char *new_uri, request_rec *r)
*/
/**
* Can be used within any handler to determine if any authentication
* is required for the current request
* @param r The current request
* @return 1 if authentication is required, 0 otherwise
* @deffunc int ap_some_auth_required(request_rec *r)
*/
/**
* Determine if the current request is the main request or a sub requests
* @param r The current request
* @retrn 1 if this is a main request, 0 otherwise
* @deffunc int ap_is_initial_req(request_rec *r)
*/
/**
* Function to set the r->mtime field to the specified value if it's later
* than what's already there.
* @param r The current request
* @param dependency_time Time to set the mtime to
* @deffunc void ap_update_mtime(request_rec *r, apr_time_t dependency_mtime)
*/
/**
* Add one or more methods to the list permitted to access the resource.
* Usually executed by the content handler before the response header is
* sent, but sometimes invoked at an earlier phase if a module knows it
* can set the list authoritatively. Note that the methods are ADDED
* to any already permitted unless the reset flag is non-zero. The
* list is used to generate the Allow response header field when it
* is needed.
* @param r The pointer to the request identifying the resource.
* @param reset Boolean flag indicating whether this list should
* completely replace any current settings.
* @param ... A NULL-terminated list of strings, each identifying a
* method name to add.
* @return None.
* @deffunc void ap_allow_methods(request_rec *r, int reset, ...)
*/
#define MERGE_ALLOW 0
#define REPLACE_ALLOW 1
#ifdef CORE_PRIVATE
/* Function called by main.c to handle first-level request */
void ap_process_request(request_rec *);
/**
* Kill the current request
* @param type Why the request is dieing
* @param r The current request
* @deffunc void ap_die(int type, request_rec *r)
*/
#endif
/* Hooks */
/**
* This hook allow modules an opportunity to translate the URI into an
* actual filename. If no modules do anything special, the server's default
* rules will be followed.
* @param r The current request
* @return OK, DECLINED, or HTTP_...
* @deffunc int ap_run_translate_name(request_rec *r)
*/
/**
* This hook allows modules to check the authentication information sent with
* the request.
* @param r The current request
* @return OK, DECLINED, or HTTP_...
* @deffunc int ap_run_check_user_id(request_rec *r)
*/
/**
* Allows modules to perform module-specific fixing of header fields. This
* is invoked just before any content-handler
* @param r The current request
* @return OK, DECLINED, or HTTP_...
* @deffunc int ap_run_fixups(request_rec *r)
*/
/**
* information bits, like Content-type (via r->content_type), language, et
* cetera.
* @param r the current request
* @return OK, DECLINED, or HTTP_...
* @deffunc int ap_run_type_checker(request_rec *r)
*/
/**
* This routine is called to check for any module-specific restrictions placed
* upon the requested resource.
* @param r the current request
* @return OK, DECLINED, or HTTP_...
* @deffunc int ap_run_access_checker(request_rec *r)
*/
/**
* This routine is called to check to see if the resource being requested
* requires authorisation.
* @param r the current request
* @return OK, DECLINED, or HTTP_...
* @deffunc int ap_run_auth_checker(request_rec *r)
*/
/**
* This hook allows modules to insert filters for the current request
* @param r the current request
* @deffunc void ap_run_insert_filter(request_rec *r)
*/
#ifdef __cplusplus
}
#endif
#endif /* !APACHE_HTTP_REQUEST_H */