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authorPhilip M. Gollucci <pgollucci@apache.org>2011-11-10 21:34:29 +0000
committerPhilip M. Gollucci <pgollucci@apache.org>2011-11-10 21:34:29 +0000
commitab9323a911e5d43577b0ce6573cf5f5410457030 (patch)
tree75aff716221f751240d45c2dc54cc85a9bec7d97 /include/apreq_module.h
parent1c0a9e7dcdf9f940dffad924d46a141e2d8e61e4 (diff)
downloadhttpd-ab9323a911e5d43577b0ce6573cf5f5410457030.tar.gz
relocate the .h files to play nice with the srclib setup
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1200570 13f79535-47bb-0310-9956-ffa450edef68
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-rw-r--r--include/apreq_module.h457
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diff --git a/include/apreq_module.h b/include/apreq_module.h
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-/*
-** Licensed to the Apache Software Foundation (ASF) under one or more
-** contributor license agreements. See the NOTICE file distributed with
-** this work for additional information regarding copyright ownership.
-** The ASF licenses this file to You under the Apache License, Version 2.0
-** (the "License"); you may not use this file except in compliance with
-** the License. You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#ifndef APREQ_MODULE_H
-#define APREQ_MODULE_H
-
-#include "apreq_cookie.h"
-#include "apreq_parser.h"
-#include "apreq_error.h"
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/**
- * @file apreq_module.h
- * @brief Module API
- * @ingroup libapreq2
- */
-
-
-/**
- * An apreq handle associated with a module. The structure
- * may have variable size, because the module may append its own data
- * structures after it.
- */
-typedef struct apreq_handle_t {
- /** the apreq module which implements this handle */
- const struct apreq_module_t *module;
- /** the pool which defines the lifetime of the parsed data */
- apr_pool_t *pool;
- /** the allocator, which persists at least as long as the pool */
- apr_bucket_alloc_t *bucket_alloc;
-
-} apreq_handle_t;
-
-/**
- * @brief Vtable describing the necessary module functions.
- */
-
-
-typedef struct apreq_module_t {
- /** name of this apreq module */
- const char *name;
- /** magic number identifying the module and version */
- apr_uint32_t magic_number;
-
- /** get a table with all cookies */
- apr_status_t (*jar)(apreq_handle_t *, const apr_table_t **);
- /** get a table with all query string parameters */
- apr_status_t (*args)(apreq_handle_t *, const apr_table_t **);
- /** get a table with all body parameters */
- apr_status_t (*body)(apreq_handle_t *, const apr_table_t **);
-
- /** get a cookie by its name */
- apreq_cookie_t *(*jar_get)(apreq_handle_t *, const char *);
- /** get a query string parameter by its name */
- apreq_param_t *(*args_get)(apreq_handle_t *, const char *);
- /** get a body parameter by its name */
- apreq_param_t *(*body_get)(apreq_handle_t *, const char *);
-
- /** gets the parser associated with the request body */
- apr_status_t (*parser_get)(apreq_handle_t *, const apreq_parser_t **);
- /** manually set a parser for the request body */
- apr_status_t (*parser_set)(apreq_handle_t *, apreq_parser_t *);
- /** add a hook function */
- apr_status_t (*hook_add)(apreq_handle_t *, apreq_hook_t *);
-
- /** determine the maximum in-memory bytes a brigade may use */
- apr_status_t (*brigade_limit_get)(apreq_handle_t *, apr_size_t *);
- /** set the maximum in-memory bytes a brigade may use */
- apr_status_t (*brigade_limit_set)(apreq_handle_t *, apr_size_t);
-
- /** determine the maximum amount of data that will be fed into a parser */
- apr_status_t (*read_limit_get)(apreq_handle_t *, apr_uint64_t *);
- /** set the maximum amount of data that will be fed into a parser */
- apr_status_t (*read_limit_set)(apreq_handle_t *, apr_uint64_t);
-
- /** determine the directory used by the parser for temporary files */
- apr_status_t (*temp_dir_get)(apreq_handle_t *, const char **);
- /** set the directory used by the parser for temporary files */
- apr_status_t (*temp_dir_set)(apreq_handle_t *, const char *);
-
-} apreq_module_t;
-
-
-/**
- * Defines the module-specific status codes which
- * are commonly considered to be non-fatal.
- *
- * @param s status code returned by an apreq_module_t method.
- *
- * @return 1 if s is fatal, 0 otherwise.
- */
-static APR_INLINE
-unsigned apreq_module_status_is_error(apr_status_t s) {
- switch (s) {
- case APR_SUCCESS:
- case APR_INCOMPLETE:
- case APR_EINIT:
- case APREQ_ERROR_NODATA:
- case APREQ_ERROR_NOPARSER:
- case APREQ_ERROR_NOHEADER:
- return 0;
- default:
- return 1;
- }
-}
-
-
-/**
- * Expose the parsed "cookie" header associated to this handle.
- *
- * @param req The request handle
- * @param t The resulting table, which will either be NULL or a
- * valid table object on return.
- *
- * @return APR_SUCCESS or a module-specific error status code.
- */
-static APR_INLINE
-apr_status_t apreq_jar(apreq_handle_t *req, const apr_table_t **t)
-{
- return req->module->jar(req,t);
-}
-
-/**
- * Expose the parsed "query string" associated to this handle.
- *
- * @param req The request handle
- * @param t The resulting table, which will either be NULL or a
- * valid table object on return.
- *
- * @return APR_SUCCESS or a module-specific error status code.
- */
-static APR_INLINE
-apr_status_t apreq_args(apreq_handle_t *req, const apr_table_t **t)
-{
- return req->module->args(req,t);
-}
-
-/**
- * Expose the parsed "request body" associated to this handle.
- *
- * @param req The request handle
- * @param t The resulting table, which will either be NULL or a
- * valid table object on return.
- *
- * @return APR_SUCCESS or a module-specific error status code.
- */
-static APR_INLINE
-apr_status_t apreq_body(apreq_handle_t *req, const apr_table_t **t)
-{
- return req->module->body(req, t);
-}
-
-
-/**
- * Fetch the first cookie with the given name.
- *
- * @param req The request handle
- * @param name Case-insensitive cookie name.
- *
- * @return First matching cookie, or NULL if none match.
- */
-static APR_INLINE
-apreq_cookie_t *apreq_jar_get(apreq_handle_t *req, const char *name)
-{
- return req->module->jar_get(req, name);
-}
-
-/**
- * Fetch the first query string param with the given name.
- *
- * @param req The request handle
- * @param name Case-insensitive param name.
- *
- * @return First matching param, or NULL if none match.
- */
-static APR_INLINE
-apreq_param_t *apreq_args_get(apreq_handle_t *req, const char *name)
-{
- return req->module->args_get(req, name);
-}
-
-/**
- * Fetch the first body param with the given name.
- *
- * @param req The request handle
- * @param name Case-insensitive cookie name.
- *
- * @return First matching param, or NULL if none match.
- */
-static APR_INLINE
-apreq_param_t *apreq_body_get(apreq_handle_t *req, const char *name)
-{
- return req->module->body_get(req, name);
-}
-
-/**
- * Fetch the active body parser.
- *
- * @param req The request handle
- * @param parser Points to the active parser on return.
- *
- * @return APR_SUCCESS or module-specific error.
- *
- */
-static APR_INLINE
-apr_status_t apreq_parser_get(apreq_handle_t *req,
- const apreq_parser_t **parser)
-{
- return req->module->parser_get(req, parser);
-}
-
-
-/**
- * Set the body parser for this request.
- *
- * @param req The request handle
- * @param parser New parser to use.
- *
- * @return APR_SUCCESS or module-specific error.
- */
-static APR_INLINE
-apr_status_t apreq_parser_set(apreq_handle_t *req,
- apreq_parser_t *parser)
-{
- return req->module->parser_set(req, parser);
-}
-
-/**
- * Add a parser hook for this request.
- *
- * @param req The request handle
- * @param hook Hook to add.
- *
- * @return APR_SUCCESS or module-specific error.
- */
-static APR_INLINE
-apr_status_t apreq_hook_add(apreq_handle_t *req, apreq_hook_t *hook)
-{
- return req->module->hook_add(req, hook);
-}
-
-
-/**
- * Set the active brigade limit.
- *
- * @param req The handle.
- * @param bytes New limit to use.
- *
- * @return APR_SUCCESS or module-specific error.
- *
- */
-static APR_INLINE
-apr_status_t apreq_brigade_limit_set(apreq_handle_t *req,
- apr_size_t bytes)
-{
- return req->module->brigade_limit_set(req, bytes);
-}
-
-/**
- * Get the active brigade limit.
- *
- * @param req The handle.
- * @param bytes Pointer to resulting (current) limit.
- *
- * @return APR_SUCCESS or a module-specific error,
- * which may leave bytes undefined.
- */
-static APR_INLINE
-apr_status_t apreq_brigade_limit_get(apreq_handle_t *req,
- apr_size_t *bytes)
-{
- return req->module->brigade_limit_get(req, bytes);
-}
-
-/**
- * Set the active read limit.
- *
- * @param req The handle.
- * @param bytes New limit to use.
- *
- * @return APR_SUCCESS or a module-specific error.
- *
- */
-static APR_INLINE
-apr_status_t apreq_read_limit_set(apreq_handle_t *req,
- apr_uint64_t bytes)
-{
- return req->module->read_limit_set(req, bytes);
-}
-
-/**
- * Get the active read limit.
- *
- * @param req The request handle.
- * @param bytes Pointer to resulting (current) limit.
- *
- * @return APR_SUCCESS or a module-specific error,
- * which may leave bytes undefined.
- */
-static APR_INLINE
-apr_status_t apreq_read_limit_get(apreq_handle_t *req,
- apr_uint64_t *bytes)
-{
- return req->module->read_limit_get(req, bytes);
-}
-
-/**
- * Set the active temp directory.
- *
- * @param req The handle.
- * @param path New path to use; may be NULL.
- *
- * @return APR_SUCCESS or a module-specific error .
- */
-static APR_INLINE
-apr_status_t apreq_temp_dir_set(apreq_handle_t *req, const char *path)
-{
- return req->module->temp_dir_set(req, path);
-}
-
-/**
- * Get the active temp directory.
- *
- * @param req The handle.
- * @param path Resulting path to temp dir.
- *
- * @return APR_SUCCESS implies path is valid, but may also be NULL.
- * Any other return value is module-specific, and may leave
- * path undefined.
- */
-static APR_INLINE
-apr_status_t apreq_temp_dir_get(apreq_handle_t *req, const char **path)
-{
- return req->module->temp_dir_get(req, path);
-}
-
-
-
-/**
- * Convenience macro for defining a module by mapping
- * a function prefix to an associated apreq_module_t structure.
- *
- * @param pre Prefix to define new module. All attributes of
- * the apreq_module_t struct are defined with this as their
- * prefix. The generated struct is named by appending "_module" to
- * the prefix.
- * @param mmn Magic number (i.e. version number) of this module.
- */
-#define APREQ_MODULE(pre, mmn) const apreq_module_t \
- pre##_module = { #pre, mmn, \
- pre##_jar, pre##_args, pre##_body, \
- pre##_jar_get, pre##_args_get, pre##_body_get, \
- pre##_parser_get, pre##_parser_set, pre##_hook_add, \
- pre##_brigade_limit_get, pre##_brigade_limit_set, \
- pre##_read_limit_get, pre##_read_limit_set, \
- pre##_temp_dir_get, pre##_temp_dir_set, \
- }
-
-
-/**
- * Create an apreq handle which is suitable for a CGI program. It
- * reads input from stdin and writes output to stdout.
- *
- * @param pool Pool associated to this handle.
- *
- * @return New handle; can only be NULL if the pool allocation failed.
- *
- * @remarks The handle gets cached in the pool's userdata, so subsequent
- * calls will retrieve the original cached handle.
- */
-APREQ_DECLARE(apreq_handle_t*) apreq_handle_cgi(apr_pool_t *pool);
-
-/**
- * Create a custom apreq handle which knows only some static
- * values. Useful if you want to test the parser code or if you have
- * got data from a custom source (neither Apache 2 nor CGI).
- *
- * @param pool allocates the parse data,
- * @param query_string parsed into args table
- * @param cookie value of the request "Cookie" header
- * @param parser parses the request body
- * @param read_limit maximum bytes to read from the body
- * @param in brigade containing the request body
- *
- * @return new handle; can only be NULL if the pool allocation failed.
- */
-APREQ_DECLARE(apreq_handle_t*) apreq_handle_custom(apr_pool_t *pool,
- const char *query_string,
- const char *cookie,
- apreq_parser_t *parser,
- apr_uint64_t read_limit,
- apr_bucket_brigade *in);
-
-/**
- * Find the first query string parameter or body parameter with the
- * specified name. The match is case-insensitive.
- *
- * @param req request handle.
- * @param key desired parameter name
- *
- * @return The first matching parameter (with args searched first) or NULL.
- */
-APREQ_DECLARE(apreq_param_t *)apreq_param(apreq_handle_t *req, const char *key);
-
-/**
- * Find the first cookie with the specified name.
- * The match is case-insensitive.
- *
- * @param req request handle.
- * @param name desired cookie name
- *
- * @return The first matching cookie or NULL.
- */
-#define apreq_cookie(req, name) apreq_jar_get(req, name)
-
-/**
- * Returns a table containing key-value pairs for the full request
- * (args + body).
- *
- * @param req request handle
- * @param p allocates the returned table.
- *
- * @return table representing all available params; is never NULL.
- */
-APREQ_DECLARE(apr_table_t *) apreq_params(apreq_handle_t *req, apr_pool_t *p);
-
-
-/**
- * Returns a table containing all request cookies.
- *
- * @param req the apreq request handle
- * @param p Allocates the returned table.
- */
-APREQ_DECLARE(apr_table_t *)apreq_cookies(apreq_handle_t *req, apr_pool_t *p);
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif /* APREQ_MODULE_H */