/* 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. </Directory> */
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 <Directory> or <Location>
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 <Directory> or <Location>
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 <Directory> or <Location> */
#define RSRC_CONF 128 /**< *.conf outside <Directory> or <Location> */
#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 <Proxy> 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 <Limit>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 <Files>,
* <Location> 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 <Limit> container, or by *not* being listed in a <LimitExcept>
* 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 fromthe 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 <foo> and the matching </foo>. 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 <foo> and the matching </foo> 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 erro, 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);
/**
* @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 <VirtualHost> */
#define NOT_IN_LIMIT 0x02 /**< Forbidden in <Limit> */
#define NOT_IN_DIRECTORY 0x04 /**< Forbidden in <Directory> */
#define NOT_IN_LOCATION 0x08 /**< Forbidden in <Location> */
#define NOT_IN_FILES 0x10 /**< Forbidden in <Files> or <If>*/
#define NOT_IN_HTACCESS 0x20 /**< Forbidden in .htaccess files */
#define NOT_IN_PROXY 0x40 /**< Forbidden in <Proxy> */
/** Forbidden in <Directory>/<Location>/<Files><If>*/
#define NOT_IN_DIR_LOC_FILE (NOT_IN_DIRECTORY|NOT_IN_LOCATION|NOT_IN_FILES)
/** Forbidden in <Directory>/<Location>/<Files><If><Proxy>*/
#define NOT_IN_DIR_CONTEXT (NOT_IN_LIMIT|NOT_IN_DIR_LOC_FILE|NOT_IN_PROXY)
/** Forbidden in <VirtualHost>/<Limit>/<Directory>/<Location>/<Files>/<If><Proxy>*/
#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 fo
* @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... (<Directory> 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
*/
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
*/
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
*/
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().
*
*/
AP_DECLARE_HOOK(void,test_config,(apr_pool_t *pconf, server_rec *s))
/**
* Run the post_config function 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
*/
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
*/
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
*/
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
*/
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()
*/
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.
*/
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.
*/
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 */
/** @} */