Adding upstream version 2.4.56.upstream/2.4.56

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1451 insertions, 0 deletions

diff --git a/include/http_config.h b/include/http_config.h
new file mode 100644
index 0000000..8359eb1
--- /dev/null
+++ b/include/http_config.h
@@ -0,0 +1,1451 @@
+/* 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.
+ */
+
+/**
+ * @file http_config.h
+ * @brief Apache Configuration
+ *
+ * @defgroup APACHE_CORE_CONFIG Configuration
+ * @ingroup  APACHE_CORE
+ * @{
+ */
+
+#ifndef APACHE_HTTP_CONFIG_H
+#define APACHE_HTTP_CONFIG_H
+
+#include "util_cfgtree.h"
+#include "ap_config.h"
+#include "apr_tables.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * The central data structures around here...
+ */
+
+/* Command dispatch structures... */
+
+/**
+ * How the directives arguments should be parsed.
+ * @remark Note that for all of these except RAW_ARGS, the config routine is
+ *      passed a freshly allocated string which can be modified or stored
+ *      or whatever...
+ */
+enum cmd_how {
+    RAW_ARGS,           /**< cmd_func parses command line itself */
+    TAKE1,              /**< one argument only */
+    TAKE2,              /**< two arguments only */
+    ITERATE,            /**< one argument, occurring multiple times
+                         * (e.g., IndexIgnore)
+                         */
+    ITERATE2,           /**< two arguments, 2nd occurs multiple times
+                         * (e.g., AddIcon)
+                         */
+    FLAG,               /**< One of 'On' or 'Off' */
+    NO_ARGS,            /**< No args at all, e.g. &lt;/Directory&gt; */
+    TAKE12,             /**< one or two arguments */
+    TAKE3,              /**< three arguments only */
+    TAKE23,             /**< two or three arguments */
+    TAKE123,            /**< one, two or three arguments */
+    TAKE13,             /**< one or three arguments */
+    TAKE_ARGV           /**< an argc and argv are passed */
+};
+
+/**
+ * This structure is passed to a command which is being invoked,
+ * to carry a large variety of miscellaneous data which is all of
+ * use to *somebody*...
+ */
+typedef struct cmd_parms_struct cmd_parms;
+
+#if defined(AP_HAVE_DESIGNATED_INITIALIZER) || defined(DOXYGEN)
+
+/**
+ * All the types of functions that can be used in directives
+ * @internal
+ */
+typedef union {
+    /** function to call for a no-args */
+    const char *(*no_args) (cmd_parms *parms, void *mconfig);
+    /** function to call for a raw-args */
+    const char *(*raw_args) (cmd_parms *parms, void *mconfig,
+                             const char *args);
+    /** function to call for a argv/argc */
+    const char *(*take_argv) (cmd_parms *parms, void *mconfig,
+                             int argc, char *const argv[]);
+    /** function to call for a take1 */
+    const char *(*take1) (cmd_parms *parms, void *mconfig, const char *w);
+    /** function to call for a take2 */
+    const char *(*take2) (cmd_parms *parms, void *mconfig, const char *w,
+                          const char *w2);
+    /** function to call for a take3 */
+    const char *(*take3) (cmd_parms *parms, void *mconfig, const char *w,
+                          const char *w2, const char *w3);
+    /** function to call for a flag */
+    const char *(*flag) (cmd_parms *parms, void *mconfig, int on);
+} cmd_func;
+
+/** This configuration directive does not take any arguments */
+# define AP_NO_ARGS     func.no_args
+/** This configuration directive will handle its own parsing of arguments*/
+# define AP_RAW_ARGS    func.raw_args
+/** This configuration directive will handle its own parsing of arguments*/
+# define AP_TAKE_ARGV   func.take_argv
+/** This configuration directive takes 1 argument*/
+# define AP_TAKE1       func.take1
+/** This configuration directive takes 2 arguments */
+# define AP_TAKE2       func.take2
+/** This configuration directive takes 3 arguments */
+# define AP_TAKE3       func.take3
+/** This configuration directive takes a flag (on/off) as a argument*/
+# define AP_FLAG        func.flag
+
+/** mechanism for declaring a directive with no arguments */
+# define AP_INIT_NO_ARGS(directive, func, mconfig, where, help) \
+    { directive, { .no_args=func }, mconfig, where, RAW_ARGS, help }
+/** mechanism for declaring a directive with raw argument parsing */
+# define AP_INIT_RAW_ARGS(directive, func, mconfig, where, help) \
+    { directive, { .raw_args=func }, mconfig, where, RAW_ARGS, help }
+/** mechanism for declaring a directive with raw argument parsing */
+# define AP_INIT_TAKE_ARGV(directive, func, mconfig, where, help) \
+    { directive, { .take_argv=func }, mconfig, where, TAKE_ARGV, help }
+/** mechanism for declaring a directive which takes 1 argument */
+# define AP_INIT_TAKE1(directive, func, mconfig, where, help) \
+    { directive, { .take1=func }, mconfig, where, TAKE1, help }
+/** mechanism for declaring a directive which takes multiple arguments */
+# define AP_INIT_ITERATE(directive, func, mconfig, where, help) \
+    { directive, { .take1=func }, mconfig, where, ITERATE, help }
+/** mechanism for declaring a directive which takes 2 arguments */
+# define AP_INIT_TAKE2(directive, func, mconfig, where, help) \
+    { directive, { .take2=func }, mconfig, where, TAKE2, help }
+/** mechanism for declaring a directive which takes 1 or 2 arguments */
+# define AP_INIT_TAKE12(directive, func, mconfig, where, help) \
+    { directive, { .take2=func }, mconfig, where, TAKE12, help }
+/** mechanism for declaring a directive which takes multiple 2 arguments */
+# define AP_INIT_ITERATE2(directive, func, mconfig, where, help) \
+    { directive, { .take2=func }, mconfig, where, ITERATE2, help }
+/** mechanism for declaring a directive which takes 1 or 3 arguments */
+# define AP_INIT_TAKE13(directive, func, mconfig, where, help) \
+    { directive, { .take3=func }, mconfig, where, TAKE13, help }
+/** mechanism for declaring a directive which takes 2 or 3 arguments */
+# define AP_INIT_TAKE23(directive, func, mconfig, where, help) \
+    { directive, { .take3=func }, mconfig, where, TAKE23, help }
+/** mechanism for declaring a directive which takes 1 to 3 arguments */
+# define AP_INIT_TAKE123(directive, func, mconfig, where, help) \
+    { directive, { .take3=func }, mconfig, where, TAKE123, help }
+/** mechanism for declaring a directive which takes 3 arguments */
+# define AP_INIT_TAKE3(directive, func, mconfig, where, help) \
+    { directive, { .take3=func }, mconfig, where, TAKE3, help }
+/** mechanism for declaring a directive which takes a flag (on/off) argument */
+# define AP_INIT_FLAG(directive, func, mconfig, where, help) \
+    { directive, { .flag=func }, mconfig, where, FLAG, help }
+
+#else /* AP_HAVE_DESIGNATED_INITIALIZER */
+
+typedef const char *(*cmd_func) ();
+
+# define AP_NO_ARGS  func
+# define AP_RAW_ARGS func
+# define AP_TAKE_ARGV func
+# define AP_TAKE1    func
+# define AP_TAKE2    func
+# define AP_TAKE3    func
+# define AP_FLAG     func
+
+# define AP_INIT_NO_ARGS(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, RAW_ARGS, help }
+# define AP_INIT_RAW_ARGS(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, RAW_ARGS, help }
+# define AP_INIT_TAKE_ARGV(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE_ARGV, help }
+# define AP_INIT_TAKE1(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE1, help }
+# define AP_INIT_ITERATE(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, ITERATE, help }
+# define AP_INIT_TAKE2(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE2, help }
+# define AP_INIT_TAKE12(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE12, help }
+# define AP_INIT_ITERATE2(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, ITERATE2, help }
+# define AP_INIT_TAKE13(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE13, help }
+# define AP_INIT_TAKE23(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE23, help }
+# define AP_INIT_TAKE123(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE123, help }
+# define AP_INIT_TAKE3(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, TAKE3, help }
+# define AP_INIT_FLAG(directive, func, mconfig, where, help) \
+    { directive, func, mconfig, where, FLAG, help }
+
+#endif /* AP_HAVE_DESIGNATED_INITIALIZER */
+
+/**
+ * The command record structure.  Modules can define a table of these
+ * to define the directives it will implement.
+ */
+typedef struct command_struct command_rec;
+struct command_struct {
+    /** Name of this command */
+    const char *name;
+    /** The function to be called when this directive is parsed */
+    cmd_func func;
+    /** Extra data, for functions which implement multiple commands... */
+    void *cmd_data;
+    /** What overrides need to be allowed to enable this command. */
+    int req_override;
+    /** What the command expects as arguments */
+    enum cmd_how args_how;
+
+    /** 'usage' message, in case of syntax errors */
+    const char *errmsg;
+};
+
+/**
+ * @defgroup ConfigDirectives Allowed locations for configuration directives.
+ *
+ * The allowed locations for a configuration directive are the union of
+ * those indicated by each set bit in the req_override mask.
+ *
+ * @{
+ */
+#define OR_NONE 0             /**< *.conf is not available anywhere in this override */
+#define OR_LIMIT 1           /**< *.conf inside &lt;Directory&gt; or &lt;Location&gt;
+                                and .htaccess when AllowOverride Limit */
+#define OR_OPTIONS 2         /**< *.conf anywhere
+                                and .htaccess when AllowOverride Options */
+#define OR_FILEINFO 4        /**< *.conf anywhere
+                                and .htaccess when AllowOverride FileInfo */
+#define OR_AUTHCFG 8         /**< *.conf inside &lt;Directory&gt; or &lt;Location&gt;
+                                and .htaccess when AllowOverride AuthConfig */
+#define OR_INDEXES 16        /**< *.conf anywhere
+                                and .htaccess when AllowOverride Indexes */
+#define OR_UNSET 32          /**< bit to indicate that AllowOverride has not been set */
+#define ACCESS_CONF 64       /**< *.conf inside &lt;Directory&gt; or &lt;Location&gt; */
+#define RSRC_CONF 128        /**< *.conf outside &lt;Directory&gt; or &lt;Location&gt; */
+#define EXEC_ON_READ 256     /**< force directive to execute a command
+                which would modify the configuration (like including another
+                file, or IFModule */
+/* Flags to determine whether syntax errors in .htaccess should be
+ * treated as nonfatal (log and ignore errors)
+ */
+#define NONFATAL_OVERRIDE 512    /* Violation of AllowOverride rule */
+#define NONFATAL_UNKNOWN 1024    /* Unrecognised directive */
+#define NONFATAL_ALL (NONFATAL_OVERRIDE|NONFATAL_UNKNOWN)
+
+#define PROXY_CONF 2048      /**< *.conf inside &lt;Proxy&gt; only */
+
+/** this directive can be placed anywhere */
+#define OR_ALL (OR_LIMIT|OR_OPTIONS|OR_FILEINFO|OR_AUTHCFG|OR_INDEXES)
+
+/** @} */
+
+/**
+ * This can be returned by a function if they don't wish to handle
+ * a command. Make it something not likely someone will actually use
+ * as an error code.
+ */
+#define DECLINE_CMD "\a\b"
+
+/** Common structure for reading of config files / passwd files etc. */
+typedef struct ap_configfile_t ap_configfile_t;
+struct ap_configfile_t {
+    /**< an apr_file_getc()-like function */
+    apr_status_t (*getch) (char *ch, void *param);
+    /**< an apr_file_gets()-like function */
+    apr_status_t (*getstr) (void *buf, apr_size_t bufsiz, void *param);
+    /**< a close handler function */
+    apr_status_t (*close) (void *param);
+    /**< the argument passed to getch/getstr/close */
+    void *param;
+    /**< the filename / description */
+    const char *name;
+    /**< current line number, starting at 1 */
+    unsigned line_number;
+};
+
+/**
+ * This structure is passed to a command which is being invoked,
+ * to carry a large variety of miscellaneous data which is all of
+ * use to *somebody*...
+ */
+struct cmd_parms_struct {
+    /** Argument to command from cmd_table */
+    void *info;
+    /** Which allow-override bits are set */
+    int override;
+    /** Which allow-override-opts bits are set */
+    int override_opts;
+    /** Table of directives allowed per AllowOverrideList */
+    apr_table_t *override_list;
+    /** Which methods are &lt;Limit&gt;ed */
+    apr_int64_t limited;
+    /** methods which are limited */
+    apr_array_header_t *limited_xmethods;
+    /** methods which are xlimited */
+    ap_method_list_t *xlimited;
+
+    /** Config file structure. */
+    ap_configfile_t *config_file;
+    /** the directive specifying this command */
+    ap_directive_t *directive;
+
+    /** Pool to allocate new storage in */
+    apr_pool_t *pool;
+    /** Pool for scratch memory; persists during configuration, but
+     *  wiped before the first request is served...  */
+    apr_pool_t *temp_pool;
+    /** Server_rec being configured for */
+    server_rec *server;
+    /** If configuring for a directory, pathname of that directory.
+     *  NOPE!  That's what it meant previous to the existence of &lt;Files&gt;,
+     * &lt;Location&gt; and regex matching.  Now the only usefulness that can be
+     * derived from this field is whether a command is being called in a
+     * server context (path == NULL) or being called in a dir context
+     * (path != NULL).  */
+    char *path;
+    /** configuration command */
+    const command_rec *cmd;
+
+    /** per_dir_config vector passed to handle_command */
+    struct ap_conf_vector_t *context;
+    /** directive with syntax error */
+    const ap_directive_t *err_directive;
+
+};
+
+/**
+ * Flags associated with a module.
+ */
+#define AP_MODULE_FLAG_NONE         (0)
+#define AP_MODULE_FLAG_ALWAYS_MERGE (1 << 0)
+
+/**
+ * Module structures.  Just about everything is dispatched through
+ * these, directly or indirectly (through the command and handler
+ * tables).
+ */
+typedef struct module_struct module;
+struct module_struct {
+    /** API version, *not* module version; check that module is
+     * compatible with this version of the server.
+     */
+    int version;
+    /** API minor version. Provides API feature milestones. Not checked
+     *  during module init */
+    int minor_version;
+    /** Index to this modules structures in config vectors.  */
+    int module_index;
+
+    /** The name of the module's C file */
+    const char *name;
+    /** The handle for the DSO.  Internal use only */
+    void *dynamic_load_handle;
+
+    /** A pointer to the next module in the list
+     *  @var module_struct *next
+     */
+    struct module_struct *next;
+
+    /** Magic Cookie to identify a module structure;  It's mainly
+     *  important for the DSO facility (see also mod_so).  */
+    unsigned long magic;
+
+    /** Function to allow MPMs to re-write command line arguments.  This
+     *  hook is only available to MPMs.
+     *  @param The process that the server is running in.
+     */
+    void (*rewrite_args) (process_rec *process);
+    /** Function to allow all modules to create per directory configuration
+     *  structures.
+     *  @param p The pool to use for all allocations.
+     *  @param dir The directory currently being processed.
+     *  @return The per-directory structure created
+     */
+    void *(*create_dir_config) (apr_pool_t *p, char *dir);
+    /** Function to allow all modules to merge the per directory configuration
+     *  structures for two directories.
+     *  @param p The pool to use for all allocations.
+     *  @param base_conf The directory structure created for the parent directory.
+     *  @param new_conf The directory structure currently being processed.
+     *  @return The new per-directory structure created
+     */
+    void *(*merge_dir_config) (apr_pool_t *p, void *base_conf, void *new_conf);
+    /** Function to allow all modules to create per server configuration
+     *  structures.
+     *  @param p The pool to use for all allocations.
+     *  @param s The server currently being processed.
+     *  @return The per-server structure created
+     */
+    void *(*create_server_config) (apr_pool_t *p, server_rec *s);
+    /** Function to allow all modules to merge the per server configuration
+     *  structures for two servers.
+     *  @param p The pool to use for all allocations.
+     *  @param base_conf The directory structure created for the parent directory.
+     *  @param new_conf The directory structure currently being processed.
+     *  @return The new per-directory structure created
+     */
+    void *(*merge_server_config) (apr_pool_t *p, void *base_conf,
+                                  void *new_conf);
+
+    /** A command_rec table that describes all of the directives this module
+     * defines. */
+    const command_rec *cmds;
+
+    /** A hook to allow modules to hook other points in the request processing.
+     *  In this function, modules should call the ap_hook_*() functions to
+     *  register an interest in a specific step in processing the current
+     *  request.
+     *  @param p the pool to use for all allocations
+     */
+    void (*register_hooks) (apr_pool_t *p);
+
+    /** A bitmask of AP_MODULE_FLAG_* */
+    int flags;
+};
+
+/**
+ * The AP_MAYBE_UNUSED macro is used for variable declarations that
+ * might potentially exhibit "unused var" warnings on some compilers if
+ * left untreated.
+ * Since static intializers are not part of the C language (C89), making
+ * (void) usage is not possible. However many compiler have proprietary 
+ * mechanism to suppress those warnings.  
+ */
+#ifdef AP_MAYBE_UNUSED
+#elif defined(__GNUC__)
+# define AP_MAYBE_UNUSED(x) x __attribute__((unused)) 
+#elif defined(__LCLINT__)
+# define AP_MAYBE_UNUSED(x) /*@unused@*/ x  
+#else
+# define AP_MAYBE_UNUSED(x) x
+#endif
+    
+/**
+ * The APLOG_USE_MODULE macro is used choose which module a file belongs to.
+ * This is necessary to allow per-module loglevel configuration.
+ *
+ * APLOG_USE_MODULE indirectly sets APLOG_MODULE_INDEX and APLOG_MARK.
+ *
+ * If a module should be backward compatible with versions before 2.3.6,
+ * APLOG_USE_MODULE needs to be enclosed in a ifdef APLOG_USE_MODULE block.
+ *
+ * @param foo name of the module symbol of the current module, without the
+ *            trailing "_module" part
+ * @see APLOG_MARK
+ */
+#define APLOG_USE_MODULE(foo) \
+    extern module AP_MODULE_DECLARE_DATA foo##_module;                  \
+    AP_MAYBE_UNUSED(static int * const aplog_module_index) = &(foo##_module.module_index)
+
+/**
+ * AP_DECLARE_MODULE is a convenience macro that combines a call of
+ * APLOG_USE_MODULE with the definition of the module symbol.
+ *
+ * If a module should be backward compatible with versions before 2.3.6,
+ * APLOG_USE_MODULE should be used explicitly instead of AP_DECLARE_MODULE.
+ */
+#define AP_DECLARE_MODULE(foo) \
+    APLOG_USE_MODULE(foo);                         \
+    module AP_MODULE_DECLARE_DATA foo##_module
+
+/**
+ * @defgroup ModuleInit Module structure initializers
+ *
+ * Initializer for the first few module slots, which are only
+ * really set up once we start running.  Note that the first two slots
+ * provide a version check; this should allow us to deal with changes to
+ * the API. The major number should reflect changes to the API handler table
+ * itself or removal of functionality. The minor number should reflect
+ * additions of functionality to the existing API. (the server can detect
+ * an old-format module, and either handle it back-compatibly, or at least
+ * signal an error). See src/include/ap_mmn.h for MMN version history.
+ * @{
+ */
+
+/** The one used in Apache 1.3, which will deliberately cause an error */
+#define STANDARD_MODULE_STUFF   this_module_needs_to_be_ported_to_apache_2_0
+
+/** Use this in all standard modules */
+#define STANDARD20_MODULE_STUFF MODULE_MAGIC_NUMBER_MAJOR, \
+                                MODULE_MAGIC_NUMBER_MINOR, \
+                                -1, \
+                                __FILE__, \
+                                NULL, \
+                                NULL, \
+                                MODULE_MAGIC_COOKIE, \
+                                NULL      /* rewrite args spot */
+
+/** Use this only in MPMs */
+#define MPM20_MODULE_STUFF      MODULE_MAGIC_NUMBER_MAJOR, \
+                                MODULE_MAGIC_NUMBER_MINOR, \
+                                -1, \
+                                __FILE__, \
+                                NULL, \
+                                NULL, \
+                                MODULE_MAGIC_COOKIE
+
+/** @} */
+
+/* CONFIGURATION VECTOR FUNCTIONS */
+
+/** configuration vector structure */
+typedef struct ap_conf_vector_t ap_conf_vector_t;
+
+/**
+ * Generic accessors for other modules to get at their own module-specific
+ * data
+ * @param cv The vector in which the modules configuration is stored.
+ *        usually r->per_dir_config or s->module_config
+ * @param m The module to get the data for.
+ * @return The module-specific data
+ */
+AP_DECLARE(void *) ap_get_module_config(const ap_conf_vector_t *cv,
+                                        const module *m);
+
+/**
+ * Generic accessors for other modules to set their own module-specific
+ * data
+ * @param cv The vector in which the modules configuration is stored.
+ *        usually r->per_dir_config or s->module_config
+ * @param m The module to set the data for.
+ * @param val The module-specific data to set
+ */
+AP_DECLARE(void) ap_set_module_config(ap_conf_vector_t *cv, const module *m,
+                                      void *val);
+
+/**
+ * When module flags have been introduced, and a way to check this.
+ */
+#define AP_MODULE_FLAGS_MMN_MAJOR 20120211
+#define AP_MODULE_FLAGS_MMN_MINOR 70
+#define AP_MODULE_HAS_FLAGS(m) \
+        AP_MODULE_MAGIC_AT_LEAST(AP_MODULE_FLAGS_MMN_MAJOR, \
+                                 AP_MODULE_FLAGS_MMN_MINOR)
+/**
+ * Generic accessor for the module's flags
+ * @param m The module to get the flags from.
+ * @return The module-specific flags
+ */
+AP_DECLARE(int) ap_get_module_flags(const module *m);
+
+#if !defined(AP_DEBUG)
+
+#define ap_get_module_config(v,m)       \
+    (((void **)(v))[(m)->module_index])
+#define ap_set_module_config(v,m,val)   \
+    ((((void **)(v))[(m)->module_index]) = (val))
+
+#endif /* AP_DEBUG */
+
+
+/**
+ * Generic accessor for modules to get the module-specific loglevel
+ * @param s The server from which to get the loglevel.
+ * @param index The module_index of the module to get the loglevel for.
+ * @return The module-specific loglevel
+ */
+AP_DECLARE(int) ap_get_server_module_loglevel(const server_rec *s, int index);
+
+/**
+ * Generic accessor for modules the module-specific loglevel
+ * @param c The connection from which to get the loglevel.
+ * @param index The module_index of the module to get the loglevel for.
+ * @return The module-specific loglevel
+ */
+AP_DECLARE(int) ap_get_conn_module_loglevel(const conn_rec *c, int index);
+
+/**
+ * Generic accessor for modules the module-specific loglevel
+ * @param c The connection from which to get the loglevel.
+ * @param s The server from which to get the loglevel if c does not have a
+ *          specific loglevel configuration.
+ * @param index The module_index of the module to get the loglevel for.
+ * @return The module-specific loglevel
+ */
+AP_DECLARE(int) ap_get_conn_server_module_loglevel(const conn_rec *c,
+                                                   const server_rec *s,
+                                                   int index);
+
+/**
+ * Generic accessor for modules to get the module-specific loglevel
+ * @param r The request from which to get the loglevel.
+ * @param index The module_index of the module to get the loglevel for.
+ * @return The module-specific loglevel
+ */
+AP_DECLARE(int) ap_get_request_module_loglevel(const request_rec *r, int index);
+
+/**
+ * Accessor to set module-specific loglevel
+ * @param p A pool
+ * @param l The ap_logconf struct to modify.
+ * @param index The module_index of the module to set the loglevel for.
+ * @param level The new log level
+ */
+AP_DECLARE(void) ap_set_module_loglevel(apr_pool_t *p, struct ap_logconf *l,
+                                        int index, int level);
+
+#if !defined(AP_DEBUG)
+
+#define ap_get_conn_logconf(c)                     \
+    ((c)->log             ? (c)->log             : \
+     &(c)->base_server->log)
+
+#define ap_get_conn_server_logconf(c,s)                             \
+    ( ( (c)->log != &(c)->base_server->log && (c)->log != NULL )  ? \
+      (c)->log                                                    : \
+      &(s)->log )
+
+#define ap_get_request_logconf(r)                  \
+    ((r)->log             ? (r)->log             : \
+     (r)->connection->log ? (r)->connection->log : \
+     &(r)->server->log)
+
+#define ap_get_module_loglevel(l,i)                                     \
+    (((i) < 0 || (l)->module_levels == NULL || (l)->module_levels[i] < 0) ?  \
+     (l)->level :                                                         \
+     (l)->module_levels[i])
+
+#define ap_get_server_module_loglevel(s,i)  \
+    (ap_get_module_loglevel(&(s)->log,i))
+
+#define ap_get_conn_module_loglevel(c,i)  \
+    (ap_get_module_loglevel(ap_get_conn_logconf(c),i))
+
+#define ap_get_conn_server_module_loglevel(c,s,i)  \
+    (ap_get_module_loglevel(ap_get_conn_server_logconf(c,s),i))
+
+#define ap_get_request_module_loglevel(r,i)  \
+    (ap_get_module_loglevel(ap_get_request_logconf(r),i))
+
+#endif /* AP_DEBUG */
+
+/**
+ * Set all module-specific loglevels to val
+ * @param l The log config for which to set the loglevels.
+ * @param val the value to set all loglevels to
+ */
+AP_DECLARE(void) ap_reset_module_loglevels(struct ap_logconf *l, int val);
+
+/**
+ * Generic command handling function for strings
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive
+ * @return An error string or NULL on success
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_string_slot(cmd_parms *cmd,
+                                                   void *struct_ptr,
+                                                   const char *arg);
+
+/**
+ * Generic command handling function for integers
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive
+ * @return An error string or NULL on success
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_int_slot(cmd_parms *cmd,
+                                                void *struct_ptr,
+                                                const char *arg);
+
+/**
+ * Parsing function for log level
+ * @param str The string to parse
+ * @param val The parsed log level
+ * @return An error string or NULL on success
+ */
+AP_DECLARE(const char *) ap_parse_log_level(const char *str, int *val);
+
+/**
+ * Return true if the specified method is limited by being listed in
+ * a &lt;Limit&gt; container, or by *not* being listed in a &lt;LimitExcept&gt;
+ * container.
+ *
+ * @param   method  Pointer to a string specifying the method to check.
+ * @param   cmd     Pointer to the cmd_parms structure passed to the
+ *                  directive handler.
+ * @return  0 if the method is not limited in the current scope
+ */
+AP_DECLARE(int) ap_method_is_limited(cmd_parms *cmd, const char *method);
+
+/**
+ * Generic command handling function for strings, always sets the value
+ * to a lowercase string
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive
+ * @return An error string or NULL on success
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_string_slot_lower(cmd_parms *cmd,
+                                                         void *struct_ptr,
+                                                         const char *arg);
+/**
+ * Generic command handling function for flags stored in an int
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive (either 1 or 0)
+ * @return An error string or NULL on success
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_flag_slot(cmd_parms *cmd,
+                                                 void *struct_ptr,
+                                                 int arg);
+/**
+ * Generic command handling function for flags stored in a char
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive (either 1 or 0)
+ * @return An error string or NULL on success
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_flag_slot_char(cmd_parms *cmd,
+                                                      void *struct_ptr,
+                                                      int arg);
+/**
+ * Generic command handling function for files
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive
+ * @return An error string or NULL on success
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_file_slot(cmd_parms *cmd,
+                                                 void *struct_ptr,
+                                                 const char *arg);
+/**
+ * Generic command handling function to respond with cmd->help as an error
+ * @param cmd The command parameters for this directive
+ * @param struct_ptr pointer into a given type
+ * @param arg The argument to the directive
+ * @return The cmd->help value as the error string
+ * @note This allows simple declarations such as:
+ * @code
+ *     AP_INIT_RAW_ARGS("Foo", ap_set_deprecated, NULL, OR_ALL,
+ *         "The Foo directive is no longer supported, use Bar"),
+ * @endcode
+ */
+AP_DECLARE_NONSTD(const char *) ap_set_deprecated(cmd_parms *cmd,
+                                                  void *struct_ptr,
+                                                  const char *arg);
+/**
+ * For modules which need to read config files, open logs, etc. this returns
+ * the canonical form of fname made absolute to ap_server_root.
+ * @param p pool to allocate data from
+ * @param fname The file name
+ */
+AP_DECLARE(char *) ap_server_root_relative(apr_pool_t *p, const char *fname);
+
+/**
+ * Compute the name of a run-time file (e.g., shared memory "file") relative
+ * to the appropriate run-time directory.  Absolute paths are returned as-is.
+ * The run-time directory is configured via the DefaultRuntimeDir directive or
+ * at build time.
+ */
+AP_DECLARE(char *) ap_runtime_dir_relative(apr_pool_t *p, const char *fname);
+
+/* Finally, the hook for dynamically loading modules in... */
+
+/**
+ * Add a module to the server
+ * @param m The module structure of the module to add
+ * @param p The pool of the same lifetime as the module
+ * @param s The module's symbol name (used for logging)
+ */
+AP_DECLARE(const char *) ap_add_module(module *m, apr_pool_t *p,
+                                       const char *s);
+
+/**
+ * Remove a module from the server.  There are some caveats:
+ * when the module is removed, its slot is lost so all the current
+ * per-dir and per-server configurations are invalid. So we should
+ * only ever call this function when you are invalidating almost
+ * all our current data. I.e. when doing a restart.
+ * @param m the module structure of the module to remove
+ */
+AP_DECLARE(void) ap_remove_module(module *m);
+/**
+ * Add a module to the chained modules list and the list of loaded modules
+ * @param mod The module structure of the module to add
+ * @param p The pool with the same lifetime as the module
+ * @param s The module's symbol name (used for logging)
+ */
+AP_DECLARE(const char *) ap_add_loaded_module(module *mod, apr_pool_t *p,
+                                              const char *s);
+/**
+ * Remove a module from the chained modules list and the list of loaded modules
+ * @param mod the module structure of the module to remove
+ */
+AP_DECLARE(void) ap_remove_loaded_module(module *mod);
+/**
+ * Find the name of the specified module
+ * @param m The module to get the name for
+ * @return the name of the module
+ */
+AP_DECLARE(const char *) ap_find_module_name(module *m);
+/**
+ * Find the short name of the module identified by the specified module index
+ * @param module_index The module index to get the name for
+ * @return the name of the module, NULL if not found
+ */
+AP_DECLARE(const char *) ap_find_module_short_name(int module_index);
+/**
+ * Find a module based on the name of the module
+ * @param name the name of the module
+ * @return the module structure if found, NULL otherwise
+ */
+AP_DECLARE(module *) ap_find_linked_module(const char *name);
+
+/**
+ * Open a ap_configfile_t as apr_file_t
+ * @param ret_cfg open ap_configfile_t struct pointer
+ * @param p The pool to allocate the structure from
+ * @param name the name of the file to open
+ */
+AP_DECLARE(apr_status_t) ap_pcfg_openfile(ap_configfile_t **ret_cfg,
+                                          apr_pool_t *p, const char *name);
+
+/**
+ * Allocate a ap_configfile_t handle with user defined functions and params
+ * @param p The pool to allocate from
+ * @param descr The name of the file
+ * @param param The argument passed to getch/getstr/close
+ * @param getc_func The getch function
+ * @param gets_func The getstr function
+ * @param close_func The close function
+ */
+AP_DECLARE(ap_configfile_t *) ap_pcfg_open_custom(apr_pool_t *p,
+    const char *descr,
+    void *param,
+    apr_status_t (*getc_func) (char *ch, void *param),
+    apr_status_t (*gets_func) (void *buf, apr_size_t bufsiz, void *param),
+    apr_status_t (*close_func) (void *param));
+
+/**
+ * Read one line from open ap_configfile_t, strip leading and trailing
+ * whitespace, increase line number
+ * @param buf place to store the line read
+ * @param bufsize size of the buffer
+ * @param cfp File to read from
+ * @return error status, APR_ENOSPC if bufsize is too small for the line
+ */
+AP_DECLARE(apr_status_t) ap_cfg_getline(char *buf, apr_size_t bufsize, ap_configfile_t *cfp);
+
+/**
+ * Read one char from open configfile_t, increase line number upon LF
+ * @param ch place to store the char read
+ * @param cfp The file to read from
+ * @return error status
+ */
+AP_DECLARE(apr_status_t) ap_cfg_getc(char *ch, ap_configfile_t *cfp);
+
+/**
+ * Detach from open ap_configfile_t, calling the close handler
+ * @param cfp The file to close
+ * @return 1 on success, 0 on failure
+ */
+AP_DECLARE(int) ap_cfg_closefile(ap_configfile_t *cfp);
+
+/**
+ * Convert a return value from ap_cfg_getline or ap_cfg_getc to a user friendly
+ * string.
+ * @param p The pool to allocate the string from
+ * @param cfp The config file
+ * @param rc The return value to convert
+ * @return The error string, NULL if rc == APR_SUCCESS
+ */
+AP_DECLARE(const char *) ap_pcfg_strerror(apr_pool_t *p, ap_configfile_t *cfp,
+                                          apr_status_t rc);
+
+/**
+ * Read all data between the current &lt;foo&gt; and the matching &lt;/foo&gt;.  All
+ * of this data is forgotten immediately.
+ * @param cmd The cmd_parms to pass to the directives inside the container
+ * @param directive The directive name to read until
+ * @return Error string on failure, NULL on success
+ * @note If cmd->pool == cmd->temp_pool, ap_soak_end_container() will assume
+ *       .htaccess context and use a lower maximum line length.
+ */
+AP_DECLARE(const char *) ap_soak_end_container(cmd_parms *cmd, char *directive);
+
+/**
+ * Read all data between the current &lt;foo&gt; and the matching &lt;/foo&gt; and build
+ * a config tree from it
+ * @param p pool to allocate from
+ * @param temp_pool Temporary pool to allocate from
+ * @param parms The cmd_parms to pass to all directives read
+ * @param current The current node in the tree
+ * @param curr_parent The current parent node
+ * @param orig_directive The directive to read until hit.
+ * @return Error string on failure, NULL on success
+ * @note If p == temp_pool, ap_build_cont_config() will assume .htaccess
+ *       context and use a lower maximum line length.
+*/
+AP_DECLARE(const char *) ap_build_cont_config(apr_pool_t *p,
+                                              apr_pool_t *temp_pool,
+                                              cmd_parms *parms,
+                                              ap_directive_t **current,
+                                              ap_directive_t **curr_parent,
+                                              char *orig_directive);
+
+/**
+ * Build a config tree from a config file
+ * @param parms The cmd_parms to pass to all of the directives in the file
+ * @param conf_pool The pconf pool
+ * @param temp_pool The temporary pool
+ * @param conftree Place to store the root node of the config tree
+ * @return Error string on error, NULL otherwise
+ * @note If conf_pool == temp_pool, ap_build_config() will assume .htaccess
+ *       context and use a lower maximum line length.
+ */
+AP_DECLARE(const char *) ap_build_config(cmd_parms *parms,
+                                         apr_pool_t *conf_pool,
+                                         apr_pool_t *temp_pool,
+                                         ap_directive_t **conftree);
+
+/**
+ * Walk a config tree and setup the server's internal structures
+ * @param conftree The config tree to walk
+ * @param parms The cmd_parms to pass to all functions
+ * @param section_vector The per-section config vector.
+ * @return Error string on error, NULL otherwise
+ */
+AP_DECLARE(const char *) ap_walk_config(ap_directive_t *conftree,
+                                        cmd_parms *parms,
+                                        ap_conf_vector_t *section_vector);
+
+/**
+ * Convenience function to create a ap_dir_match_t structure from a cmd_parms.
+ *
+ * @param cmd The command.
+ * @param flags Flags to indicate whether optional or recursive.
+ * @param cb Callback for each file found that matches the wildcard. Return NULL on
+ *        success, an error string on error.
+ * @param ctx Context for the callback.
+ * @return Structure ap_dir_match_t with fields populated, allocated from the
+ *         cmd->temp_pool.
+ */
+AP_DECLARE(ap_dir_match_t *)ap_dir_cfgmatch(cmd_parms *cmd, int flags,
+        const char *(*cb)(ap_dir_match_t *w, const char *fname), void *ctx)
+        __attribute__((nonnull(1,3)));
+
+/**
+ * @defgroup ap_check_cmd_context Check command context
+ * @{
+ */
+/**
+ * Check the context a command is used in.
+ * @param cmd The command to check
+ * @param forbidden Where the command is forbidden.
+ * @return Error string on error, NULL on success
+ */
+AP_DECLARE(const char *) ap_check_cmd_context(cmd_parms *cmd,
+                                              unsigned forbidden);
+
+#define  NOT_IN_VIRTUALHOST     0x01 /**< Forbidden in &lt;VirtualHost&gt; */
+#define  NOT_IN_LIMIT           0x02 /**< Forbidden in &lt;Limit&gt; */
+#define  NOT_IN_DIRECTORY       0x04 /**< Forbidden in &lt;Directory&gt; */
+#define  NOT_IN_LOCATION        0x08 /**< Forbidden in &lt;Location&gt; */
+#define  NOT_IN_FILES           0x10 /**< Forbidden in &lt;Files&gt; or &lt;If&gt;*/
+#define  NOT_IN_HTACCESS        0x20 /**< Forbidden in .htaccess files */
+#define  NOT_IN_PROXY           0x40 /**< Forbidden in &lt;Proxy&gt; */
+/** Forbidden in &lt;Directory&gt;/&lt;Location&gt;/&lt;Files&gt;&lt;If&gt;*/
+#define  NOT_IN_DIR_LOC_FILE    (NOT_IN_DIRECTORY|NOT_IN_LOCATION|NOT_IN_FILES)
+/** Forbidden in &lt;Directory&gt;/&lt;Location&gt;/&lt;Files&gt;&lt;If&gt;&lt;Proxy&gt;*/
+#define  NOT_IN_DIR_CONTEXT     (NOT_IN_LIMIT|NOT_IN_DIR_LOC_FILE|NOT_IN_PROXY)
+/** Forbidden in &lt;VirtualHost&gt;/&lt;Limit&gt;/&lt;Directory&gt;/&lt;Location&gt;/&lt;Files&gt;/&lt;If&gt;&lt;Proxy&gt;*/
+#define  GLOBAL_ONLY            (NOT_IN_VIRTUALHOST|NOT_IN_DIR_CONTEXT)
+
+/** @} */
+
+/**
+ * @brief This structure is used to assign symbol names to module pointers
+ */
+typedef struct {
+    const char *name;
+    module *modp;
+} ap_module_symbol_t;
+
+/**
+ * The topmost module in the list
+ * @var module *ap_top_module
+ */
+AP_DECLARE_DATA extern module *ap_top_module;
+
+/**
+ * Array of all statically linked modules
+ * @var module *ap_prelinked_modules[]
+ */
+AP_DECLARE_DATA extern module *ap_prelinked_modules[];
+/**
+ * Array of all statically linked modulenames (symbols)
+ * @var ap_module_symbol_t ap_prelinked_module_symbols[]
+ */
+AP_DECLARE_DATA extern ap_module_symbol_t ap_prelinked_module_symbols[];
+/**
+ * Array of all preloaded modules
+ * @var module *ap_preloaded_modules[]
+ */
+AP_DECLARE_DATA extern module *ap_preloaded_modules[];
+/**
+ * Array of all loaded modules
+ * @var module **ap_loaded_modules
+ */
+AP_DECLARE_DATA extern module **ap_loaded_modules;
+
+/* For mod_so.c... */
+/** Run a single module's two create_config hooks
+ *  @param p the pool to allocate from
+ *  @param s The server to configure for.
+ *  @param m The module to configure
+ */
+AP_DECLARE(void) ap_single_module_configure(apr_pool_t *p, server_rec *s,
+                                            module *m);
+
+/* For http_main.c... */
+/**
+ * Add all of the prelinked modules into the loaded module list
+ * @param process The process that is currently running the server
+ */
+AP_DECLARE(const char *) ap_setup_prelinked_modules(process_rec *process);
+
+/**
+ * Show the preloaded configuration directives, the help string explaining
+ * the directive arguments, in what module they are handled, and in
+ * what parts of the configuration they are allowed.  Used for httpd -h.
+ */
+AP_DECLARE(void) ap_show_directives(void);
+
+/**
+ * Returns non-zero if a configuration directive of the given name has
+ * been registered by a module at the time of calling.
+ * @param p Pool for temporary allocations
+ * @param name Directive name
+ */
+AP_DECLARE(int) ap_exists_directive(apr_pool_t *p, const char *name);
+
+/**
+ * Show the preloaded module names.  Used for httpd -l.
+ */
+AP_DECLARE(void) ap_show_modules(void);
+
+/**
+ * Show the MPM name.  Used in reporting modules such as mod_info to
+ * provide extra information to the user
+ */
+AP_DECLARE(const char *) ap_show_mpm(void);
+
+/**
+ * Read all config files and setup the server
+ * @param process The process running the server
+ * @param temp_pool A pool to allocate temporary data from.
+ * @param config_name The name of the config file
+ * @param conftree Place to store the root of the config tree
+ * @return The setup server_rec list.
+ */
+AP_DECLARE(server_rec *) ap_read_config(process_rec *process,
+                                        apr_pool_t *temp_pool,
+                                        const char *config_name,
+                                        ap_directive_t **conftree);
+
+/**
+ * Run all rewrite args hooks for loaded modules
+ * @param process The process currently running the server
+ */
+AP_DECLARE(void) ap_run_rewrite_args(process_rec *process);
+
+/**
+ * Run the register hooks function for a specified module
+ * @param m The module to run the register hooks function from
+ * @param p The pool valid for the lifetime of the module
+ */
+AP_DECLARE(void) ap_register_hooks(module *m, apr_pool_t *p);
+
+/**
+ * Setup all virtual hosts
+ * @param p The pool to allocate from
+ * @param main_server The head of the server_rec list
+ */
+AP_DECLARE(void) ap_fixup_virtual_hosts(apr_pool_t *p,
+                                        server_rec *main_server);
+
+/**
+ * Reserve some modules slots for modules loaded by other means than
+ * EXEC_ON_READ directives.
+ * Relevant modules should call this in the pre_config stage.
+ * @param count The number of slots to reserve.
+ */
+AP_DECLARE(void) ap_reserve_module_slots(int count);
+
+/**
+ * Reserve some modules slots for modules loaded by a specific
+ * non-EXEC_ON_READ config directive.
+ * This counts how often the given directive is used in the config and calls
+ * ap_reserve_module_slots() accordingly.
+ * @param directive The name of the directive
+ */
+AP_DECLARE(void) ap_reserve_module_slots_directive(const char *directive);
+
+/* For http_request.c... */
+
+/**
+ * Setup the config vector for a request_rec
+ * @param p The pool to allocate the config vector from
+ * @return The config vector
+ */
+AP_DECLARE(ap_conf_vector_t*) ap_create_request_config(apr_pool_t *p);
+
+/**
+ * Setup the config vector for per dir module configs
+ * @param p The pool to allocate the config vector from
+ * @return The config vector
+ */
+AP_CORE_DECLARE(ap_conf_vector_t *) ap_create_per_dir_config(apr_pool_t *p);
+
+/**
+ * Run all of the modules merge per dir config functions
+ * @param p The pool to pass to the merge functions
+ * @param base The base directory config structure
+ * @param new_conf The new directory config structure
+ */
+AP_CORE_DECLARE(ap_conf_vector_t*) ap_merge_per_dir_configs(apr_pool_t *p,
+                                           ap_conf_vector_t *base,
+                                           ap_conf_vector_t *new_conf);
+
+/**
+ * Allocate new ap_logconf and make (deep) copy of old ap_logconf
+ * @param p The pool to alloc from
+ * @param old The ap_logconf to copy (may be NULL)
+ * @return The new ap_logconf struct
+ */
+AP_DECLARE(struct ap_logconf *) ap_new_log_config(apr_pool_t *p,
+                                                  const struct ap_logconf *old);
+
+/**
+ * Merge old ap_logconf into new ap_logconf.
+ * old and new must have the same life time.
+ * @param old_conf The ap_logconf to merge from
+ * @param new_conf The ap_logconf to merge into
+ */
+AP_DECLARE(void) ap_merge_log_config(const struct ap_logconf *old_conf,
+                                     struct ap_logconf *new_conf);
+
+/* For http_connection.c... */
+/**
+ * Setup the config vector for a connection_rec
+ * @param p The pool to allocate the config vector from
+ * @return The config vector
+ */
+AP_CORE_DECLARE(ap_conf_vector_t*) ap_create_conn_config(apr_pool_t *p);
+
+/* For http_core.c... (&lt;Directory&gt; command and virtual hosts) */
+
+/**
+ * parse an htaccess file
+ * @param result htaccess_result
+ * @param r The request currently being served
+ * @param override Which overrides are active
+ * @param override_opts Which allow-override-opts bits are set
+ * @param override_list Table of directives allowed for override
+ * @param path The path to the htaccess file
+ * @param access_name The list of possible names for .htaccess files
+ * int The status of the current request
+ */
+AP_CORE_DECLARE(int) ap_parse_htaccess(ap_conf_vector_t **result,
+                                       request_rec *r,
+                                       int override,
+                                       int override_opts,
+                                       apr_table_t *override_list,
+                                       const char *path,
+                                       const char *access_name);
+
+/**
+ * Setup a virtual host
+ * @param p The pool to allocate all memory from
+ * @param hostname The hostname of the virtual hsot
+ * @param main_server The main server for this Apache configuration
+ * @param ps Place to store the new server_rec
+ * return Error string on error, NULL on success
+ */
+AP_CORE_DECLARE(const char *) ap_init_virtual_host(apr_pool_t *p,
+                                                   const char *hostname,
+                                                   server_rec *main_server,
+                                                   server_rec **ps);
+
+/**
+ * Process a config file for Apache
+ * @param s The server rec to use for the command parms
+ * @param fname The name of the config file
+ * @param conftree The root node of the created config tree
+ * @param p Pool for general allocation
+ * @param ptemp Pool for temporary allocation
+ */
+AP_DECLARE(const char *) ap_process_resource_config(server_rec *s,
+                                                    const char *fname,
+                                                    ap_directive_t **conftree,
+                                                    apr_pool_t *p,
+                                                    apr_pool_t *ptemp);
+
+/**
+ * Process all matching files as Apache configs
+ * @param s The server rec to use for the command parms
+ * @param fname The filename pattern of the config file
+ * @param conftree The root node of the created config tree
+ * @param p Pool for general allocation
+ * @param ptemp Pool for temporary allocation
+ * @param optional Whether a no-match wildcard is allowed
+ * @see apr_fnmatch for pattern handling
+ */
+AP_DECLARE(const char *) ap_process_fnmatch_configs(server_rec *s,
+                                                    const char *fname,
+                                                    ap_directive_t **conftree,
+                                                    apr_pool_t *p,
+                                                    apr_pool_t *ptemp,
+                                                    int optional);
+
+/**
+ * Process all directives in the config tree
+ * @param s The server rec to use in the command parms
+ * @param conftree The config tree to process
+ * @param p The pool for general allocation
+ * @param ptemp The pool for temporary allocations
+ * @return OK if no problems
+ */
+AP_DECLARE(int) ap_process_config_tree(server_rec *s,
+                                       ap_directive_t *conftree,
+                                       apr_pool_t *p,
+                                       apr_pool_t *ptemp);
+
+/**
+ * Store data which will be retained across unload/load of modules
+ * @param key The unique key associated with this module's retained data
+ * @param size in bytes of the retained data (to be allocated)
+ * @return Address of new retained data structure, initially cleared
+ */
+AP_DECLARE(void *) ap_retained_data_create(const char *key, apr_size_t size);
+
+/**
+ * Retrieve data which was stored by ap_retained_data_create()
+ * @param key The unique key associated with this module's retained data
+ * @return Address of previously retained data structure, or NULL if not yet saved
+ */
+AP_DECLARE(void *) ap_retained_data_get(const char *key);
+
+/* Module-method dispatchers, also for http_request.c */
+/**
+ * Run the handler phase of each module until a module accepts the
+ * responsibility of serving the request
+ * @param r The current request
+ * @return The status of the current request
+ */
+AP_CORE_DECLARE(int) ap_invoke_handler(request_rec *r);
+
+/* for mod_perl */
+
+/**
+ * Find a given directive in a command_rec table
+ * @param name The directive to search for
+ * @param cmds The table to search
+ * @return The directive definition of the specified directive
+ */
+AP_CORE_DECLARE(const command_rec *) ap_find_command(const char *name,
+                                                     const command_rec *cmds);
+
+/**
+ * Find a given directive in a list of modules.
+ * @param cmd_name The directive to search for
+ * @param mod Pointer to the first module in the linked list; will be set to
+ *            the module providing cmd_name
+ * @return The directive definition of the specified directive.
+ *         *mod will be changed to point to the module containing the
+ *         directive.
+ */
+AP_CORE_DECLARE(const command_rec *) ap_find_command_in_modules(const char *cmd_name,
+                                                                module **mod);
+
+/**
+ * Ask a module to create per-server and per-section (dir/loc/file) configs
+ * (if it hasn't happened already). The results are stored in the server's
+ * config, and the specified per-section config vector.
+ * @param server The server to operate upon.
+ * @param section_vector The per-section config vector.
+ * @param section Which section to create a config for.
+ * @param mod The module which is defining the config data.
+ * @param pconf A pool for all configuration allocations.
+ * @return The (new) per-section config data.
+ */
+AP_CORE_DECLARE(void *) ap_set_config_vectors(server_rec *server,
+                                              ap_conf_vector_t *section_vector,
+                                              const char *section,
+                                              module *mod, apr_pool_t *pconf);
+
+  /* Hooks */
+
+/**
+ * Run the header parser functions for each module
+ * @param r The current request
+ * @return OK or DECLINED
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,header_parser,(request_rec *r))
+
+/**
+ * Run the pre_config function for each module
+ * @param pconf The config pool
+ * @param plog The logging streams pool
+ * @param ptemp The temporary pool
+ * @return OK or DECLINED on success anything else is a error
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,pre_config,(apr_pool_t *pconf,apr_pool_t *plog,
+                                apr_pool_t *ptemp))
+
+/**
+ * Run the check_config function for each module
+ * @param pconf The config pool
+ * @param plog The logging streams pool
+ * @param ptemp The temporary pool
+ * @param s the server to operate upon
+ * @return OK or DECLINED on success anything else is a error
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,check_config,(apr_pool_t *pconf, apr_pool_t *plog,
+                                  apr_pool_t *ptemp, server_rec *s))
+
+/**
+ * Run the test_config function for each module; this hook is run
+ * only if the server was invoked to test the configuration syntax.
+ * @param pconf The config pool
+ * @param s The list of server_recs
+ * @note To avoid reordering problems due to different buffering, hook
+ *       functions should only apr_file_*() to print to stdout/stderr and
+ *       not simple printf()/fprintf().
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(void,test_config,(apr_pool_t *pconf, server_rec *s))
+
+/**
+ * Run the post_config function for each module
+ *
+ * The function might be called multiple times.  @a pconf, @a plog, and
+ * @a ptemp may be cleared and/or destroyed between calls.
+ *
+ * The function will be called zero or one times with the server's state being
+ * #AP_SQ_MS_CREATE_PRE_CONFIG, and will be called one or more times with
+ * the server's state being #AP_SQ_MS_CREATE_CONFIG.
+ *
+ * @see ap_state_query(), #AP_SQ_MAIN_STATE
+ *
+ * @param pconf The config pool
+ * @param plog The logging streams pool
+ * @param ptemp The temporary pool
+ * @param s The list of server_recs
+ * @return OK or DECLINED on success anything else is a error
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,post_config,(apr_pool_t *pconf,apr_pool_t *plog,
+                                 apr_pool_t *ptemp,server_rec *s))
+
+/**
+ * Run the open_logs functions for each module
+ * @param pconf The config pool
+ * @param plog The logging streams pool
+ * @param ptemp The temporary pool
+ * @param s The list of server_recs
+ * @return OK or DECLINED on success anything else is a error
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,open_logs,(apr_pool_t *pconf,apr_pool_t *plog,
+                               apr_pool_t *ptemp,server_rec *s))
+
+/**
+ * Run the child_init functions for each module
+ * @param pchild The child pool
+ * @param s The list of server_recs in this server
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(void,child_init,(apr_pool_t *pchild, server_rec *s))
+
+/**
+ * Run the handler functions for each module
+ * @param r The request_rec
+ * @remark non-wildcard handlers should HOOK_MIDDLE, wildcard HOOK_LAST
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,handler,(request_rec *r))
+
+/**
+ * Run the quick handler functions for each module. The quick_handler
+ * is run before any other requests hooks are called (location_walk,
+ * directory_walk, access checking, et. al.). This hook was added
+ * to provide a quick way to serve content from a URI keyed cache.
+ *
+ * @param r The request_rec
+ * @param lookup_uri Controls whether the caller actually wants content or not.
+ * lookup is set when the quick_handler is called out of
+ * ap_sub_req_lookup_uri()
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,quick_handler,(request_rec *r, int lookup_uri))
+
+/**
+ * Retrieve the optional functions for each module.
+ * This is run immediately before the server starts. Optional functions should
+ * be registered during the hook registration phase.
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(void,optional_fn_retrieve,(void))
+
+/**
+ * Allow modules to open htaccess files or perform operations before doing so
+ * @param r The current request
+ * @param dir_name The directory for which the htaccess file should be opened
+ * @param access_name The filename  for which the htaccess file should be opened
+ * @param conffile Where the pointer to the opened ap_configfile_t must be
+ *        stored
+ * @param full_name Where the full file name of the htaccess file must be
+ *        stored.
+ * @return APR_SUCCESS on success,
+ *         APR_ENOENT or APR_ENOTDIR if no htaccess file exists,
+ *         AP_DECLINED to let later modules do the opening,
+ *         any other error code on error.
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(apr_status_t,open_htaccess,
+                (request_rec *r, const char *dir_name, const char *access_name,
+                 ap_configfile_t **conffile, const char **full_name))
+
+/**
+ * Core internal function, use ap_run_open_htaccess() instead.
+ */
+apr_status_t ap_open_htaccess(request_rec *r, const char *dir_name,
+        const char *access_name, ap_configfile_t **conffile,
+        const char **full_name);
+
+/**
+ * A generic pool cleanup that will reset a pointer to NULL. For use with
+ * apr_pool_cleanup_register.
+ * @param data The address of the pointer
+ * @return APR_SUCCESS
+ */
+AP_DECLARE_NONSTD(apr_status_t) ap_pool_cleanup_set_null(void *data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* !APACHE_HTTP_CONFIG_H */
+/** @} */