http_request.h revision 64f9a806e490593c6c4f44ab70b46f3d229e5879
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For more * information on the Apache Software Foundation, please see * Portions of this software are based upon public domain software * originally written at the National Center for Supercomputing Applications, * University of Illinois, Urbana-Champaign. * @brief Apache Request library * 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. * An internal handler used by the ap_process_request, all sub request mechanisms * and the redirect mechanism. * @param r The request, subrequest or internal redirect to pre-process * @return The return code for the request * 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 this subrequest cannot be served [lookup only] * @return The new request record * @deffunc request_rec * ap_sub_req_lookup_uri(const char *new_file, 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 this subrequest cannot be served [lookup only] * @return The new request record * @deffunc request_rec * ap_sub_req_lookup_file(const char *new_file, const request_rec *r) * Create a sub request for the given apr_dir_read result. This sub request * can be inspected to find information about the requested file * @param finfo The apr_dir_read result to lookup * @param r The current request * @param subtype What type of subrequest to perform, one of; * AP_SUBREQ_NO_ARGS ignore r->args and r->path_info * AP_SUBREQ_MERGE_ARGS merge r->args and r->path_info * @param next_filter The first filter the sub_request should use. If this is * NULL this subrequest cannot be served [lookup only] * @return The new request record * @deffunc request_rec * ap_sub_req_lookup_dirent(apr_finfo_t *finfo, int subtype, const request_rec *r) * @tip The apr_dir_read flags value APR_FINFO_MIN|APR_FINFO_NAME flag is the * minimum recommended query if the results will be passed to apr_dir_read. * The file info passed must include the name, and must have the same relative * directory as the current request. * 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) * 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 * @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) * Redirect the current request to a sub_req, merging the pools * @param sub_req A subrequest created from this request * @param r The current request * @deffunc void ap_internal_fast_redirect(request_rec *sub_req, request_rec *r) * @tip the sub_req's pool will be merged into r's pool, be very careful * not to destroy this subrequest, it will be destroyed with the main request! * 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 * @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 * @deffunc void ap_allow_methods(request_rec *r, int reset, ...) * 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 * @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 list of method identifiers, from the "M_" series * defined in httpd.h, terminated with a value of -1 * (e.g., "M_GET, M_POST, M_OPTIONS, -1") * @deffunc void ap_allow_standard_methods(request_rec *r, int reset, ...) /* Function called by main.c to handle first-level request */ * 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) * Gives modules a chance to create their request_config entry when the * @param r The current request * 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_... * This hook allow modules to set the per_dir_config based on their own * context (such as <Proxy > sections) and responds to contextless requests * such as TRACE that need no security or filesystem mapping. * based on the filesystem. * @param r The current request * @return DONE (or HTTP_) if this contextless request was just fulfilled * (such as TRACE), OK if this is not a file, and DECLINED if this is a file. * The core map_to_storage (HOOK_RUN_LAST) will directory_walk and file_walk * This hook allows modules to check the authentication information sent with * @param r The current request * @return OK, DECLINED, or HTTP_... * 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_... * This routine is called to determine and/or set the various document type * information bits, like Content-type (via r->content_type), language, et * @param r the current request * @return OK, DECLINED, or HTTP_... * 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_... * 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_... * This hook allows modules to insert filters for the current request * @param r the current request #
endif /* !APACHE_HTTP_REQUEST_H */