1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 * @brief Apache Configuration
21 * @defgroup APACHE_CORE_CONFIG Configuration
22 * @ingroup APACHE_CORE
26 #ifndef APACHE_HTTP_CONFIG_H
27 #define APACHE_HTTP_CONFIG_H
29 #include "apr_hooks.h"
30 #include "util_cfgtree.h"
31 #include "ap_config.h"
38 * The central data structures around here...
41 /* Command dispatch structures... */
44 * How the directives arguments should be parsed.
45 * @remark Note that for all of these except RAW_ARGS, the config routine is
46 * passed a freshly allocated string which can be modified or stored
50 RAW_ARGS, /**< cmd_func parses command line itself */
51 TAKE1, /**< one argument only */
52 TAKE2, /**< two arguments only */
53 ITERATE, /**< one argument, occuring multiple times
56 ITERATE2, /**< two arguments, 2nd occurs multiple times
59 FLAG, /**< One of 'On' or 'Off' */
60 NO_ARGS, /**< No args at all, e.g. </Directory> */
61 TAKE12, /**< one or two arguments */
62 TAKE3, /**< three arguments only */
63 TAKE23, /**< two or three arguments */
64 TAKE123, /**< one, two or three arguments */
65 TAKE13, /**< one or three arguments */
66 TAKE_ARGV /**< an argc and argv are passed */
70 * This structure is passed to a command which is being invoked,
71 * to carry a large variety of miscellaneous data which is all of
72 * use to *somebody*...
74 typedef struct cmd_parms_struct cmd_parms;
76 #if defined(AP_HAVE_DESIGNATED_INITIALIZER) || defined(DOXYGEN)
79 * All the types of functions that can be used in directives
83 /** function to call for a no-args */
84 const char *(*no_args) (cmd_parms *parms, void *mconfig);
85 /** function to call for a raw-args */
86 const char *(*raw_args) (cmd_parms *parms, void *mconfig,
88 /** function to call for a argv/argc */
89 const char *(*take_argv) (cmd_parms *parms, void *mconfig,
90 int argc, char *const argv[]);
91 /** function to call for a take1 */
92 const char *(*take1) (cmd_parms *parms, void *mconfig, const char *w);
93 /** function to call for a take2 */
94 const char *(*take2) (cmd_parms *parms, void *mconfig, const char *w,
96 /** function to call for a take3 */
97 const char *(*take3) (cmd_parms *parms, void *mconfig, const char *w,
98 const char *w2, const char *w3);
99 /** function to call for a flag */
100 const char *(*flag) (cmd_parms *parms, void *mconfig, int on);
103 /** This configuration directive does not take any arguments */
104 # define AP_NO_ARGS func.no_args
105 /** This configuration directive will handle it's own parsing of arguments*/
106 # define AP_RAW_ARGS func.raw_args
107 /** This configuration directive will handle it's own parsing of arguments*/
108 # define AP_TAKE_ARGV func.take_argv
109 /** This configuration directive takes 1 argument*/
110 # define AP_TAKE1 func.take1
111 /** This configuration directive takes 2 arguments */
112 # define AP_TAKE2 func.take2
113 /** This configuration directive takes 3 arguments */
114 # define AP_TAKE3 func.take3
115 /** This configuration directive takes a flag (on/off) as a argument*/
116 # define AP_FLAG func.flag
118 /** mechanism for declaring a directive with no arguments */
119 # define AP_INIT_NO_ARGS(directive, func, mconfig, where, help) \
120 { directive, { .no_args=func }, mconfig, where, RAW_ARGS, help }
121 /** mechanism for declaring a directive with raw argument parsing */
122 # define AP_INIT_RAW_ARGS(directive, func, mconfig, where, help) \
123 { directive, { .raw_args=func }, mconfig, where, RAW_ARGS, help }
124 /** mechanism for declaring a directive with raw argument parsing */
125 # define AP_INIT_TAKE_ARGV(directive, func, mconfig, where, help) \
126 { directive, { .take_argv=func }, mconfig, where, TAKE_ARGV, help }
127 /** mechanism for declaring a directive which takes 1 argument */
128 # define AP_INIT_TAKE1(directive, func, mconfig, where, help) \
129 { directive, { .take1=func }, mconfig, where, TAKE1, help }
130 /** mechanism for declaring a directive which takes multiple arguments */
131 # define AP_INIT_ITERATE(directive, func, mconfig, where, help) \
132 { directive, { .take1=func }, mconfig, where, ITERATE, help }
133 /** mechanism for declaring a directive which takes 2 arguments */
134 # define AP_INIT_TAKE2(directive, func, mconfig, where, help) \
135 { directive, { .take2=func }, mconfig, where, TAKE2, help }
136 /** mechanism for declaring a directive which takes 1 or 2 arguments */
137 # define AP_INIT_TAKE12(directive, func, mconfig, where, help) \
138 { directive, { .take2=func }, mconfig, where, TAKE12, help }
139 /** mechanism for declaring a directive which takes multiple 2 arguments */
140 # define AP_INIT_ITERATE2(directive, func, mconfig, where, help) \
141 { directive, { .take2=func }, mconfig, where, ITERATE2, help }
142 /** mechanism for declaring a directive which takes 1 or 3 arguments */
143 # define AP_INIT_TAKE13(directive, func, mconfig, where, help) \
144 { directive, { .take3=func }, mconfig, where, TAKE13, help }
145 /** mechanism for declaring a directive which takes 2 or 3 arguments */
146 # define AP_INIT_TAKE23(directive, func, mconfig, where, help) \
147 { directive, { .take3=func }, mconfig, where, TAKE23, help }
148 /** mechanism for declaring a directive which takes 1 to 3 arguments */
149 # define AP_INIT_TAKE123(directive, func, mconfig, where, help) \
150 { directive, { .take3=func }, mconfig, where, TAKE123, help }
151 /** mechanism for declaring a directive which takes 3 arguments */
152 # define AP_INIT_TAKE3(directive, func, mconfig, where, help) \
153 { directive, { .take3=func }, mconfig, where, TAKE3, help }
154 /** mechanism for declaring a directive which takes a flag (on/off) argument */
155 # define AP_INIT_FLAG(directive, func, mconfig, where, help) \
156 { directive, { .flag=func }, mconfig, where, FLAG, help }
158 #else /* AP_HAVE_DESIGNATED_INITIALIZER */
160 typedef const char *(*cmd_func) ();
162 # define AP_NO_ARGS func
163 # define AP_RAW_ARGS func
164 # define AP_TAKE_ARGV func
165 # define AP_TAKE1 func
166 # define AP_TAKE2 func
167 # define AP_TAKE3 func
168 # define AP_FLAG func
170 # define AP_INIT_NO_ARGS(directive, func, mconfig, where, help) \
171 { directive, func, mconfig, where, RAW_ARGS, help }
172 # define AP_INIT_RAW_ARGS(directive, func, mconfig, where, help) \
173 { directive, func, mconfig, where, RAW_ARGS, help }
174 # define AP_INIT_TAKE_ARGV(directive, func, mconfig, where, help) \
175 { directive, func, mconfig, where, TAKE_ARGV, help }
176 # define AP_INIT_TAKE1(directive, func, mconfig, where, help) \
177 { directive, func, mconfig, where, TAKE1, help }
178 # define AP_INIT_ITERATE(directive, func, mconfig, where, help) \
179 { directive, func, mconfig, where, ITERATE, help }
180 # define AP_INIT_TAKE2(directive, func, mconfig, where, help) \
181 { directive, func, mconfig, where, TAKE2, help }
182 # define AP_INIT_TAKE12(directive, func, mconfig, where, help) \
183 { directive, func, mconfig, where, TAKE12, help }
184 # define AP_INIT_ITERATE2(directive, func, mconfig, where, help) \
185 { directive, func, mconfig, where, ITERATE2, help }
186 # define AP_INIT_TAKE13(directive, func, mconfig, where, help) \
187 { directive, func, mconfig, where, TAKE13, help }
188 # define AP_INIT_TAKE23(directive, func, mconfig, where, help) \
189 { directive, func, mconfig, where, TAKE23, help }
190 # define AP_INIT_TAKE123(directive, func, mconfig, where, help) \
191 { directive, func, mconfig, where, TAKE123, help }
192 # define AP_INIT_TAKE3(directive, func, mconfig, where, help) \
193 { directive, func, mconfig, where, TAKE3, help }
194 # define AP_INIT_FLAG(directive, func, mconfig, where, help) \
195 { directive, func, mconfig, where, FLAG, help }
197 #endif /* AP_HAVE_DESIGNATED_INITIALIZER */
200 * The command record structure. Each modules can define a table of these
201 * to define the directives it will implement.
203 typedef struct command_struct command_rec;
204 struct command_struct {
205 /** Name of this command */
207 /** The function to be called when this directive is parsed */
209 /** Extra data, for functions which implement multiple commands... */
211 /** What overrides need to be allowed to enable this command. */
213 /** What the command expects as arguments */
214 enum cmd_how args_how;
216 /** 'usage' message, in case of syntax errors */
221 * @defgroup ConfigDirectives Allowed locations for configuration directives.
223 * The allowed locations for a configuration directive are the union of
224 * those indicated by each set bit in the req_override mask.
228 #define OR_NONE 0 /**< *.conf is not available anywhere in this override */
229 #define OR_LIMIT 1 /**< *.conf inside <Directory> or <Location>
230 and .htaccess when AllowOverride Limit */
231 #define OR_OPTIONS 2 /**< *.conf anywhere
232 and .htaccess when AllowOverride Options */
233 #define OR_FILEINFO 4 /**< *.conf anywhere
234 and .htaccess when AllowOverride FileInfo */
235 #define OR_AUTHCFG 8 /**< *.conf inside <Directory> or <Location>
236 and .htaccess when AllowOverride AuthConfig */
237 #define OR_INDEXES 16 /**< *.conf anywhere
238 and .htaccess when AllowOverride Indexes */
239 #define OR_UNSET 32 /**< unset a directive (in Allow) */
240 #define ACCESS_CONF 64 /**< *.conf inside <Directory> or <Location> */
241 #define RSRC_CONF 128 /**< *.conf outside <Directory> or <Location> */
242 #define EXEC_ON_READ 256 /**< force directive to execute a command
243 which would modify the configuration (like including another
245 /** this directive can be placed anywhere */
246 #define OR_ALL (OR_LIMIT|OR_OPTIONS|OR_FILEINFO|OR_AUTHCFG|OR_INDEXES)
251 * This can be returned by a function if they don't wish to handle
252 * a command. Make it something not likely someone will actually use
255 #define DECLINE_CMD "\a\b"
257 /** Common structure for reading of config files / passwd files etc. */
258 typedef struct ap_configfile_t ap_configfile_t;
259 struct ap_configfile_t {
260 int (*getch) (void *param); /**< a getc()-like function */
261 void *(*getstr) (void *buf, size_t bufsiz, void *param);
262 /**< a fgets()-like function */
263 int (*close) (void *param); /**< a close handler function */
264 void *param; /**< the argument passed to getch/getstr/close */
265 const char *name; /**< the filename / description */
266 unsigned line_number; /**< current line number, starting at 1 */
270 * This structure is passed to a command which is being invoked,
271 * to carry a large variety of miscellaneous data which is all of
272 * use to *somebody*...
274 struct cmd_parms_struct {
275 /** Argument to command from cmd_table */
277 /** Which allow-override bits are set */
279 /** Which methods are <Limit>ed */
281 /** methods which are limited */
282 apr_array_header_t *limited_xmethods;
283 /** methods which are xlimited */
284 ap_method_list_t *xlimited;
286 /** Config file structure. */
287 ap_configfile_t *config_file;
288 /** the directive specifying this command */
289 ap_directive_t *directive;
291 /** Pool to allocate new storage in */
293 /** Pool for scratch memory; persists during configuration, but
294 * wiped before the first request is served... */
295 apr_pool_t *temp_pool;
296 /** Server_rec being configured for */
298 /** If configuring for a directory, pathname of that directory.
299 * NOPE! That's what it meant previous to the existance of <Files>,
300 * <Location> and regex matching. Now the only usefulness that can be
301 * derived from this field is whether a command is being called in a
302 * server context (path == NULL) or being called in a dir context
305 /** configuration command */
306 const command_rec *cmd;
308 /** per_dir_config vector passed to handle_command */
309 struct ap_conf_vector_t *context;
310 /** directive with syntax error */
311 const ap_directive_t *err_directive;
313 /** Which allow-override-opts bits are set */
318 * Module structures. Just about everything is dispatched through
319 * these, directly or indirectly (through the command and handler
322 typedef struct module_struct module;
323 struct module_struct {
324 /** API version, *not* module version; check that module is
325 * compatible with this version of the server.
328 /** API minor version. Provides API feature milestones. Not checked
329 * during module init */
331 /** Index to this modules structures in config vectors. */
334 /** The name of the module's C file */
336 /** The handle for the DSO. Internal use only */
337 void *dynamic_load_handle;
339 /** A pointer to the next module in the list
340 * @var module_struct *next
342 struct module_struct *next;
344 /** Magic Cookie to identify a module structure; It's mainly
345 * important for the DSO facility (see also mod_so). */
348 /** Function to allow MPMs to re-write command line arguments. This
349 * hook is only available to MPMs.
350 * @param The process that the server is running in.
352 void (*rewrite_args) (process_rec *process);
353 /** Function to allow all modules to create per directory configuration
355 * @param p The pool to use for all allocations.
356 * @param dir The directory currently being processed.
357 * @return The per-directory structure created
359 void *(*create_dir_config) (apr_pool_t *p, char *dir);
360 /** Function to allow all modules to merge the per directory configuration
361 * structures for two directories.
362 * @param p The pool to use for all allocations.
363 * @param base_conf The directory structure created for the parent directory.
364 * @param new_conf The directory structure currently being processed.
365 * @return The new per-directory structure created
367 void *(*merge_dir_config) (apr_pool_t *p, void *base_conf, void *new_conf);
368 /** Function to allow all modules to create per server configuration
370 * @param p The pool to use for all allocations.
371 * @param s The server currently being processed.
372 * @return The per-server structure created
374 void *(*create_server_config) (apr_pool_t *p, server_rec *s);
375 /** Function to allow all modules to merge the per server configuration
376 * structures for two servers.
377 * @param p The pool to use for all allocations.
378 * @param base_conf The directory structure created for the parent directory.
379 * @param new_conf The directory structure currently being processed.
380 * @return The new per-directory structure created
382 void *(*merge_server_config) (apr_pool_t *p, void *base_conf,
385 /** A command_rec table that describes all of the directives this module
387 const command_rec *cmds;
389 /** A hook to allow modules to hook other points in the request processing.
390 * In this function, modules should call the ap_hook_*() functions to
391 * register an interest in a specific step in processing the current
393 * @param p the pool to use for all allocations
395 void (*register_hooks) (apr_pool_t *p);
399 * Macro to choose which module a file belongs to, for logging.
401 #define APLOG_USE_MODULE(foo) \
402 extern module AP_MODULE_DECLARE_DATA foo##_module; \
403 static int * const aplog_module_index = &(foo##_module.module_index)
405 #define AP_DECLARE_MODULE(foo) \
406 APLOG_USE_MODULE(foo); \
407 module AP_MODULE_DECLARE_DATA foo##_module
410 * @defgroup ModuleInit Module structure initializers
412 * Initializer for the first few module slots, which are only
413 * really set up once we start running. Note that the first two slots
414 * provide a version check; this should allow us to deal with changes to
415 * the API. The major number should reflect changes to the API handler table
416 * itself or removal of functionality. The minor number should reflect
417 * additions of functionality to the existing API. (the server can detect
418 * an old-format module, and either handle it back-compatibly, or at least
419 * signal an error). See src/include/ap_mmn.h for MMN version history.
423 /** The one used in Apache 1.3, which will deliberately cause an error */
424 #define STANDARD_MODULE_STUFF this_module_needs_to_be_ported_to_apache_2_0
426 /** Use this in all standard modules */
427 #define STANDARD20_MODULE_STUFF MODULE_MAGIC_NUMBER_MAJOR, \
428 MODULE_MAGIC_NUMBER_MINOR, \
433 MODULE_MAGIC_COOKIE, \
434 NULL /* rewrite args spot */
436 /** Use this only in MPMs */
437 #define MPM20_MODULE_STUFF MODULE_MAGIC_NUMBER_MAJOR, \
438 MODULE_MAGIC_NUMBER_MINOR, \
447 /* CONFIGURATION VECTOR FUNCTIONS */
449 /** configuration vector structure */
450 typedef struct ap_conf_vector_t ap_conf_vector_t;
453 * Generic accessors for other modules to get at their own module-specific
455 * @param cv The vector in which the modules configuration is stored.
456 * usually r->per_dir_config or s->module_config
457 * @param m The module to get the data for.
458 * @return The module-specific data
460 AP_DECLARE(void *) ap_get_module_config(const ap_conf_vector_t *cv,
464 * Generic accessors for other modules to set at their own module-specific
466 * @param cv The vector in which the modules configuration is stored.
467 * usually r->per_dir_config or s->module_config
468 * @param m The module to set the data for.
469 * @param val The module-specific data to set
471 AP_DECLARE(void) ap_set_module_config(ap_conf_vector_t *cv, const module *m,
474 #if !defined(AP_DEBUG)
476 #define ap_get_module_config(v,m) \
477 (((void **)(v))[(m)->module_index])
478 #define ap_set_module_config(v,m,val) \
479 ((((void **)(v))[(m)->module_index]) = (val))
481 #endif /* AP_DEBUG */
485 * Generic accessor for modules to get the module-specific loglevel
486 * @param s The server from which to get the loglevel.
487 * @param index The module_index of the module to get the loglevel for.
488 * @return The module-specific loglevel
490 AP_DECLARE(int) ap_get_module_loglevel(const server_rec *s, int index);
493 * Accessor to set module-specific loglevel
495 * @param s The server for which to set the loglevel.
496 * @param index The module_index of the module to set the loglevel for.
497 * @param level The new log level
498 * @return The module-specific loglevel
500 AP_DECLARE(void) ap_set_module_loglevel(apr_pool_t *p, server_rec *s,
501 int index, int level);
503 #if !defined(AP_DEBUG)
505 #define ap_get_module_loglevel(s,i) \
506 (i < 0 || (s)->module_loglevels == NULL || (((s)->module_loglevels)[i]) < 0 ? \
508 ((s)->module_loglevels)[i])
510 #endif /* AP_DEBUG */
513 * Reset all module-specific loglevels to server default
515 * @param s The server for which to set the loglevel.
516 * @param index The module_index of the module to set the loglevel for.
517 * @param level The new log level
518 * @return The module-specific loglevel
520 AP_DECLARE(void) ap_reset_module_loglevels(server_rec *s);
523 * Generic command handling function for strings
524 * @param cmd The command parameters for this directive
525 * @param struct_ptr pointer into a given type
526 * @param arg The argument to the directive
527 * @return An error string or NULL on success
529 AP_DECLARE_NONSTD(const char *) ap_set_string_slot(cmd_parms *cmd,
534 * Generic command handling function for integers
535 * @param cmd The command parameters for this directive
536 * @param struct_ptr pointer into a given type
537 * @param arg The argument to the directive
538 * @return An error string or NULL on success
540 AP_DECLARE_NONSTD(const char *) ap_set_int_slot(cmd_parms *cmd,
545 * Parsing function for log level
546 * @param str The string to parse
547 * @param val The parsed log level
548 * @return An error string or NULL on success
550 AP_DECLARE(const char *) ap_parse_log_level(const char *str, int *val);
553 * Return true if the specified method is limited by being listed in
554 * a <Limit> container, or by *not* being listed in a <LimitExcept>
557 * @param method Pointer to a string specifying the method to check.
558 * @param cmd Pointer to the cmd_parms structure passed to the
560 * @return 0 if the method is not limited in the current scope
562 AP_DECLARE(int) ap_method_is_limited(cmd_parms *cmd, const char *method);
565 * Generic command handling function for strings, always sets the value
566 * to a lowercase string
567 * @param cmd The command parameters for this directive
568 * @param struct_ptr pointer into a given type
569 * @param arg The argument to the directive
570 * @return An error string or NULL on success
572 AP_DECLARE_NONSTD(const char *) ap_set_string_slot_lower(cmd_parms *cmd,
576 * Generic command handling function for flags
577 * @param cmd The command parameters for this directive
578 * @param struct_ptr pointer into a given type
579 * @param arg The argument to the directive (either 1 or 0)
580 * @return An error string or NULL on success
582 AP_DECLARE_NONSTD(const char *) ap_set_flag_slot(cmd_parms *cmd,
586 * Generic command handling function for files
587 * @param cmd The command parameters for this directive
588 * @param struct_ptr pointer into a given type
589 * @param arg The argument to the directive
590 * @return An error string or NULL on success
592 AP_DECLARE_NONSTD(const char *) ap_set_file_slot(cmd_parms *cmd,
596 * Generic command handling function to respond with cmd->help as an error
597 * @param cmd The command parameters for this directive
598 * @param struct_ptr pointer into a given type
599 * @param arg The argument to the directive
600 * @return The cmd->help value as the error string
601 * @note This allows simple declarations such as:
603 * AP_INIT_RAW_ARGS("Foo", ap_set_deprecated, NULL, OR_ALL,
604 * "The Foo directive is no longer supported, use Bar"),
607 AP_DECLARE_NONSTD(const char *) ap_set_deprecated(cmd_parms *cmd,
611 * For modules which need to read config files, open logs, etc. this returns
612 * the canonical form of fname made absolute to ap_server_root.
613 * @param p pool to allocate data from
614 * @param fname The file name
616 AP_DECLARE(char *) ap_server_root_relative(apr_pool_t *p, const char *fname);
618 /* Finally, the hook for dynamically loading modules in... */
621 * Add a module to the server
622 * @param m The module structure of the module to add
623 * @param p The pool of the same lifetime as the module
625 AP_DECLARE(const char *) ap_add_module(module *m, apr_pool_t *p);
628 * Remove a module from the server. There are some caveats:
629 * when the module is removed, its slot is lost so all the current
630 * per-dir and per-server configurations are invalid. So we should
631 * only ever call this function when you are invalidating almost
632 * all our current data. I.e. when doing a restart.
633 * @param m the module structure of the module to remove
635 AP_DECLARE(void) ap_remove_module(module *m);
637 * Add a module to the chained modules list and the list of loaded modules
638 * @param mod The module structure of the module to add
639 * @param p The pool with the same lifetime as the module
641 AP_DECLARE(const char *) ap_add_loaded_module(module *mod, apr_pool_t *p);
643 * Remove a module fromthe chained modules list and the list of loaded modules
644 * @param mod the module structure of the module to remove
646 AP_DECLARE(void) ap_remove_loaded_module(module *mod);
648 * Find the name of the specified module
649 * @param m The module to get the name for
650 * @return the name of the module
652 AP_DECLARE(const char *) ap_find_module_name(module *m);
654 * Find a module based on the name of the module
655 * @param name the name of the module
656 * @return the module structure if found, NULL otherwise
658 AP_DECLARE(module *) ap_find_linked_module(const char *name);
661 * Open a ap_configfile_t as apr_file_t
662 * @param ret_cfg open ap_configfile_t struct pointer
663 * @param p The pool to allocate the structure from
664 * @param name the name of the file to open
666 AP_DECLARE(apr_status_t) ap_pcfg_openfile(ap_configfile_t **ret_cfg,
667 apr_pool_t *p, const char *name);
670 * Allocate a ap_configfile_t handle with user defined functions and params
671 * @param p The pool to allocate from
672 * @param descr The name of the file
673 * @param param The argument passed to getch/getstr/close
674 * @param getc_func The getch function
675 * @param gets_func The getstr function
676 * @param close_func The close function
678 AP_DECLARE(ap_configfile_t *) ap_pcfg_open_custom(apr_pool_t *p,
681 int(*getc_func)(void*),
682 void *(*gets_func) (void *buf, size_t bufsiz, void *param),
683 int(*close_func)(void *param));
686 * Read one line from open ap_configfile_t, strip LF, increase line number
687 * @param buf place to store the line read
688 * @param bufsize size of the buffer
689 * @param cfp File to read from
690 * @return 1 on success, 0 on failure
692 AP_DECLARE(int) ap_cfg_getline(char *buf, size_t bufsize, ap_configfile_t *cfp);
695 * Read one char from open configfile_t, increase line number upon LF
696 * @param cfp The file to read from
697 * @return the character read
699 AP_DECLARE(int) ap_cfg_getc(ap_configfile_t *cfp);
702 * Detach from open ap_configfile_t, calling the close handler
703 * @param cfp The file to close
704 * @return 1 on sucess, 0 on failure
706 AP_DECLARE(int) ap_cfg_closefile(ap_configfile_t *cfp);
709 * Read all data between the current <foo> and the matching </foo>. All
710 * of this data is forgotten immediately.
711 * @param cmd The cmd_parms to pass to the directives inside the container
712 * @param directive The directive name to read until
713 * @return Error string on failure, NULL on success
715 AP_DECLARE(const char *) ap_soak_end_container(cmd_parms *cmd, char *directive);
718 * Read all data between the current <foo> and the matching </foo> and build
719 * a config tree from it
720 * @param p pool to allocate from
721 * @param temp_pool Temporary pool to allocate from
722 * @param parms The cmd_parms to pass to all directives read
723 * @param current The current node in the tree
724 * @param curr_parent The current parent node
725 * @param orig_directive The directive to read until hit.
726 * @return Error string on failure, NULL on success
728 AP_DECLARE(const char *) ap_build_cont_config(apr_pool_t *p,
729 apr_pool_t *temp_pool,
731 ap_directive_t **current,
732 ap_directive_t **curr_parent,
733 char *orig_directive);
736 * Build a config tree from a config file
737 * @param parms The cmd_parms to pass to all of the directives in the file
738 * @param conf_pool The pconf pool
739 * @param temp_pool The temporary pool
740 * @param conftree Place to store the root node of the config tree
741 * @return Error string on erro, NULL otherwise
743 AP_DECLARE(const char *) ap_build_config(cmd_parms *parms,
744 apr_pool_t *conf_pool,
745 apr_pool_t *temp_pool,
746 ap_directive_t **conftree);
749 * Walk a config tree and setup the server's internal structures
750 * @param conftree The config tree to walk
751 * @param parms The cmd_parms to pass to all functions
752 * @param section_vector The per-section config vector.
753 * @return Error string on error, NULL otherwise
755 AP_DECLARE(const char *) ap_walk_config(ap_directive_t *conftree,
757 ap_conf_vector_t *section_vector);
760 * @defgroup ap_check_cmd_context Check command context
764 * Check the context a command is used in.
765 * @param cmd The command to check
766 * @param forbidden Where the command is forbidden.
767 * @return Error string on error, NULL on success
769 AP_DECLARE(const char *) ap_check_cmd_context(cmd_parms *cmd,
772 #define NOT_IN_VIRTUALHOST 0x01 /**< Forbidden in <VirtualHost> */
773 #define NOT_IN_LIMIT 0x02 /**< Forbidden in <Limit> */
774 #define NOT_IN_DIRECTORY 0x04 /**< Forbidden in <Directory> */
775 #define NOT_IN_LOCATION 0x08 /**< Forbidden in <Location> */
776 #define NOT_IN_FILES 0x10 /**< Forbidden in <Files> */
777 /** Forbidden in <Directory>/<Location>/<Files>*/
778 #define NOT_IN_DIR_LOC_FILE (NOT_IN_DIRECTORY|NOT_IN_LOCATION|NOT_IN_FILES)
779 /** Forbidden in <VirtualHost>/<Limit>/<Directory>/<Location>/<Files> */
780 #define GLOBAL_ONLY (NOT_IN_VIRTUALHOST|NOT_IN_LIMIT|NOT_IN_DIR_LOC_FILE)
785 * @brief This structure is used to assign symbol names to module pointers
790 } ap_module_symbol_t;
793 * The topmost module in the list
794 * @var module *ap_top_module
796 AP_DECLARE_DATA extern module *ap_top_module;
799 * Array of all statically linked modules
800 * @var module *ap_prelinked_modules[]
802 AP_DECLARE_DATA extern module *ap_prelinked_modules[];
804 * Array of all statically linked modulenames (symbols)
805 * @var ap_module_symbol_t ap_prelinked_module_symbols[]
807 AP_DECLARE_DATA extern ap_module_symbol_t ap_prelinked_module_symbols[];
809 * Array of all preloaded modules
810 * @var module *ap_preloaded_modules[]
812 AP_DECLARE_DATA extern module *ap_preloaded_modules[];
814 * Array of all loaded modules
815 * @var module **ap_loaded_modules
817 AP_DECLARE_DATA extern module **ap_loaded_modules;
819 /* For mod_so.c... */
820 /** Run a single module's two create_config hooks
821 * @param p the pool to allocate from
822 * @param s The server to configure for.
823 * @param m The module to configure
825 AP_DECLARE(void) ap_single_module_configure(apr_pool_t *p, server_rec *s,
828 /* For http_main.c... */
830 * Add all of the prelinked modules into the loaded module list
831 * @param process The process that is currently running the server
833 AP_DECLARE(const char *) ap_setup_prelinked_modules(process_rec *process);
836 * Show the preloaded configuration directives, the help string explaining
837 * the directive arguments, in what module they are handled, and in
838 * what parts of the configuration they are allowed. Used for httpd -h.
840 AP_DECLARE(void) ap_show_directives(void);
843 * Show the preloaded module names. Used for httpd -l.
845 AP_DECLARE(void) ap_show_modules(void);
848 * Show the MPM name. Used in reporting modules such as mod_info to
849 * provide extra information to the user
851 AP_DECLARE(const char *) ap_show_mpm(void);
854 * Read all config files and setup the server
855 * @param process The process running the server
856 * @param temp_pool A pool to allocate temporary data from.
857 * @param config_name The name of the config file
858 * @param conftree Place to store the root of the config tree
859 * @return The setup server_rec list.
861 AP_DECLARE(server_rec *) ap_read_config(process_rec *process,
862 apr_pool_t *temp_pool,
863 const char *config_name,
864 ap_directive_t **conftree);
867 * Run all rewrite args hooks for loaded modules
868 * @param process The process currently running the server
870 AP_DECLARE(void) ap_run_rewrite_args(process_rec *process);
873 * Run the register hooks function for a specified module
874 * @param m The module to run the register hooks function fo
875 * @param p The pool valid for the lifetime of the module
877 AP_DECLARE(void) ap_register_hooks(module *m, apr_pool_t *p);
880 * Setup all virtual hosts
881 * @param p The pool to allocate from
882 * @param main_server The head of the server_rec list
884 AP_DECLARE(void) ap_fixup_virtual_hosts(apr_pool_t *p,
885 server_rec *main_server);
887 /* For http_request.c... */
890 * Setup the config vector for a request_rec
891 * @param p The pool to allocate the config vector from
892 * @return The config vector
894 AP_CORE_DECLARE(ap_conf_vector_t*) ap_create_request_config(apr_pool_t *p);
897 * Setup the config vector for per dir module configs
898 * @param p The pool to allocate the config vector from
899 * @return The config vector
901 AP_CORE_DECLARE(ap_conf_vector_t *) ap_create_per_dir_config(apr_pool_t *p);
904 * Run all of the modules merge per dir config functions
905 * @param p The pool to pass to the merge functions
906 * @param base The base directory config structure
907 * @param new_conf The new directory config structure
909 AP_CORE_DECLARE(ap_conf_vector_t*) ap_merge_per_dir_configs(apr_pool_t *p,
910 ap_conf_vector_t *base,
911 ap_conf_vector_t *new_conf);
913 /* For http_connection.c... */
915 * Setup the config vector for a connection_rec
916 * @param p The pool to allocate the config vector from
917 * @return The config vector
919 AP_CORE_DECLARE(ap_conf_vector_t*) ap_create_conn_config(apr_pool_t *p);
921 /* For http_core.c... (<Directory> command and virtual hosts) */
924 * parse an htaccess file
925 * @param result htaccess_result
926 * @param r The request currently being served
927 * @param override Which overrides are active
928 * @param override_opts Which allow-override-opts bits are set
929 * @param path The path to the htaccess file
930 * @param access_name The list of possible names for .htaccess files
931 * int The status of the current request
933 AP_CORE_DECLARE(int) ap_parse_htaccess(ap_conf_vector_t **result,
938 const char *access_name);
941 * Setup a virtual host
942 * @param p The pool to allocate all memory from
943 * @param hostname The hostname of the virtual hsot
944 * @param main_server The main server for this Apache configuration
945 * @param ps Place to store the new server_rec
946 * return Error string on error, NULL on success
948 AP_CORE_DECLARE(const char *) ap_init_virtual_host(apr_pool_t *p,
949 const char *hostname,
950 server_rec *main_server,
954 * Process a config file for Apache
955 * @param s The server rec to use for the command parms
956 * @param fname The name of the config file
957 * @param conftree The root node of the created config tree
958 * @param p Pool for general allocation
959 * @param ptemp Pool for temporary allocation
961 AP_DECLARE(const char *) ap_process_resource_config(server_rec *s,
963 ap_directive_t **conftree,
968 * Process all matching files as Apache configs
969 * @param s The server rec to use for the command parms
970 * @param fname The filename pattern of the config file
971 * @param conftree The root node of the created config tree
972 * @param p Pool for general allocation
973 * @param ptemp Pool for temporary allocation
974 * @param optional Whether a no-match wildcard is allowed
975 * @see apr_fnmatch for pattern handling
977 AP_DECLARE(const char *) ap_process_fnmatch_configs(server_rec *s,
979 ap_directive_t **conftree,
985 * Process all directives in the config tree
986 * @param s The server rec to use in the command parms
987 * @param conftree The config tree to process
988 * @param p The pool for general allocation
989 * @param ptemp The pool for temporary allocations
990 * @return OK if no problems
992 AP_DECLARE(int) ap_process_config_tree(server_rec *s,
993 ap_directive_t *conftree,
998 * Store data which will be retained across unload/load of modules
999 * @param key The unique key associated with this module's retained data
1000 * @param size in bytes of the retained data (to be allocated)
1001 * @return Address of new retained data structure, initially cleared
1003 AP_DECLARE(void *) ap_retained_data_create(const char *key, apr_size_t size);
1006 * Retrieve data which was stored by ap_retained_data_create()
1007 * @param key The unique key associated with this module's retained data
1008 * @return Address of previously retained data structure, or NULL if not yet saved
1010 AP_DECLARE(void *) ap_retained_data_get(const char *key);
1012 /* Module-method dispatchers, also for http_request.c */
1014 * Run the handler phase of each module until a module accepts the
1015 * responsibility of serving the request
1016 * @param r The current request
1017 * @return The status of the current request
1019 AP_CORE_DECLARE(int) ap_invoke_handler(request_rec *r);
1024 * Find a given directive in a command_rec table
1025 * @param name The directive to search for
1026 * @param cmds The table to search
1027 * @return The directive definition of the specified directive
1029 AP_CORE_DECLARE(const command_rec *) ap_find_command(const char *name,
1030 const command_rec *cmds);
1033 * Find a given directive in a list module
1034 * @param cmd_name The directive to search for
1035 * @param mod The module list to search
1036 * @return The directive definition of the specified directive
1038 AP_CORE_DECLARE(const command_rec *) ap_find_command_in_modules(const char *cmd_name,
1042 * Ask a module to create per-server and per-section (dir/loc/file) configs
1043 * (if it hasn't happened already). The results are stored in the server's
1044 * config, and the specified per-section config vector.
1045 * @param server The server to operate upon.
1046 * @param section_vector The per-section config vector.
1047 * @param section Which section to create a config for.
1048 * @param mod The module which is defining the config data.
1049 * @param pconf A pool for all configuration allocations.
1050 * @return The (new) per-section config data.
1052 AP_CORE_DECLARE(void *) ap_set_config_vectors(server_rec *server,
1053 ap_conf_vector_t *section_vector,
1054 const char *section,
1055 module *mod, apr_pool_t *pconf);
1060 * Run the header parser functions for each module
1061 * @param r The current request
1062 * @return OK or DECLINED
1064 AP_DECLARE_HOOK(int,header_parser,(request_rec *r))
1067 * Run the pre_config function for each module
1068 * @param pconf The config pool
1069 * @param plog The logging streams pool
1070 * @param ptemp The temporary pool
1071 * @return OK or DECLINED on success anything else is a error
1073 AP_DECLARE_HOOK(int,pre_config,(apr_pool_t *pconf,apr_pool_t *plog,
1077 * Run the check_config function for each module
1078 * @param pconf The config pool
1079 * @param plog The logging streams pool
1080 * @param ptemp The temporary pool
1081 * @param s the server to operate upon
1082 * @return OK or DECLINED on success anything else is a error
1084 AP_DECLARE_HOOK(int,check_config,(apr_pool_t *pconf, apr_pool_t *plog,
1085 apr_pool_t *ptemp, server_rec *s))
1088 * Run the test_config function for each module; this hook is run
1089 * only if the server was invoked to test the configuration syntax.
1090 * @param pconf The config pool
1091 * @param s The list of server_recs
1093 AP_DECLARE_HOOK(void,test_config,(apr_pool_t *pconf, server_rec *s))
1096 * Run the post_config function for each module
1097 * @param pconf The config pool
1098 * @param plog The logging streams pool
1099 * @param ptemp The temporary pool
1100 * @param s The list of server_recs
1101 * @return OK or DECLINED on success anything else is a error
1103 AP_DECLARE_HOOK(int,post_config,(apr_pool_t *pconf,apr_pool_t *plog,
1104 apr_pool_t *ptemp,server_rec *s))
1107 * Run the open_logs functions for each module
1108 * @param pconf The config pool
1109 * @param plog The logging streams pool
1110 * @param ptemp The temporary pool
1111 * @param s The list of server_recs
1112 * @return OK or DECLINED on success anything else is a error
1114 AP_DECLARE_HOOK(int,open_logs,(apr_pool_t *pconf,apr_pool_t *plog,
1115 apr_pool_t *ptemp,server_rec *s))
1118 * Run the child_init functions for each module
1119 * @param pchild The child pool
1120 * @param s The list of server_recs in this server
1122 AP_DECLARE_HOOK(void,child_init,(apr_pool_t *pchild, server_rec *s))
1125 * Run the handler functions for each module
1126 * @param r The request_rec
1127 * @remark non-wildcard handlers should HOOK_MIDDLE, wildcard HOOK_LAST
1129 AP_DECLARE_HOOK(int,handler,(request_rec *r))
1132 * Run the quick handler functions for each module. The quick_handler
1133 * is run before any other requests hooks are called (location_walk,
1134 * directory_walk, access checking, et. al.). This hook was added
1135 * to provide a quick way to serve content from a URI keyed cache.
1137 * @param r The request_rec
1138 * @param lookup_uri Controls whether the caller actually wants content or not.
1139 * lookup is set when the quick_handler is called out of
1140 * ap_sub_req_lookup_uri()
1142 AP_DECLARE_HOOK(int,quick_handler,(request_rec *r, int lookup_uri))
1145 * Retrieve the optional functions for each module.
1146 * This is run immediately before the server starts. Optional functions should
1147 * be registered during the hook registration phase.
1149 AP_DECLARE_HOOK(void,optional_fn_retrieve,(void))
1155 #endif /* !APACHE_HTTP_CONFIG_H */