2013-01-25 14:01:04 +00:00
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2012 - 2013, Digium, Inc.
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*
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* Joshua Colp <jcolp@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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*
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* \brief Sorcery Configuration File Object Wizard
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*
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* \author Joshua Colp <jcolp@digium.com>
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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git migration: Refactor the ASTERISK_FILE_VERSION macro
Git does not support the ability to replace a token with a version
string during check-in. While it does have support for replacing a
token on clone, this is somewhat sub-optimal: the token is replaced
with the object hash, which is not particularly easy for human
consumption. What's more, in practice, the source file version was often
not terribly useful. Generally, when triaging bugs, the overall version
of Asterisk is far more useful than an individual SVN version of a file. As a
result, this patch removes Asterisk's support for showing source file
versions.
Specifically, it does the following:
* Rename ASTERISK_FILE_VERSION macro to ASTERISK_REGISTER_FILE, and
remove passing the version in with the macro. Other facilities
than 'core show file version' make use of the file names, such as
setting a debug level only on a specific file. As such, the act of
registering source files with the Asterisk core still has use. The
macro rename now reflects the new macro purpose.
* main/asterisk:
- Refactor the file_version structure to reflect that it no longer
tracks a version field.
- Remove the "core show file version" CLI command. Without the file
version, it is no longer useful.
- Remove the ast_file_version_find function. The file version is no
longer tracked.
- Rename ast_register_file_version/ast_unregister_file_version to
ast_register_file/ast_unregister_file, respectively.
* main/manager: Remove value from the Version key of the ModuleCheck
Action. The actual key itself has not been removed, as doing so would
absolutely constitute a backwards incompatible change. However, since
the file version is no longer tracked, there is no need to attempt to
include it in the Version key.
* UPGRADE: Add notes for:
- Modification to the ModuleCheck AMI Action
- Removal of the "core show file version" CLI command
Change-Id: I6cf0ff280e1668bf4957dc21f32a5ff43444a40e
2015-04-12 02:38:22 +00:00
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ASTERISK_REGISTER_FILE()
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2013-01-25 14:01:04 +00:00
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2013-02-16 16:24:21 +00:00
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#include <regex.h>
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2013-01-25 14:01:04 +00:00
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#include "asterisk/module.h"
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#include "asterisk/sorcery.h"
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#include "asterisk/astobj2.h"
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#include "asterisk/config.h"
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2013-02-07 17:57:10 +00:00
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#include "asterisk/uuid.h"
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2015-02-15 17:43:21 +00:00
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#include "asterisk/hashtab.h"
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2013-01-25 14:01:04 +00:00
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/*! \brief Structure for storing configuration file sourced objects */
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struct sorcery_config {
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2013-02-07 17:57:10 +00:00
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/*! \brief UUID for identifying us when opening a configuration file */
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char uuid[AST_UUID_STR_LEN];
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2013-01-25 14:01:04 +00:00
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/*! \brief Objects retrieved from the configuration file */
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struct ao2_global_obj objects;
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/*! \brief Any specific variable criteria for considering a defined category for this object */
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struct ast_variable *criteria;
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/*! \brief Number of buckets to use for objects */
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unsigned int buckets;
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/*! \brief Enable file level integrity instead of object level */
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unsigned int file_integrity:1;
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/*! \brief Filename of the configuration file */
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char filename[];
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};
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/*! \brief Structure used for fields comparison */
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struct sorcery_config_fields_cmp_params {
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/*! \brief Pointer to the sorcery structure */
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const struct ast_sorcery *sorcery;
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/*! \brief Pointer to the fields to check */
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const struct ast_variable *fields;
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2013-02-16 16:24:21 +00:00
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/*! \brief Regular expression for checking object id */
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regex_t *regex;
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2013-01-25 14:01:04 +00:00
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/*! \brief Optional container to put object into */
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struct ao2_container *container;
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};
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static void *sorcery_config_open(const char *data);
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static void sorcery_config_load(void *data, const struct ast_sorcery *sorcery, const char *type);
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static void sorcery_config_reload(void *data, const struct ast_sorcery *sorcery, const char *type);
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static void *sorcery_config_retrieve_id(const struct ast_sorcery *sorcery, void *data, const char *type, const char *id);
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static void *sorcery_config_retrieve_fields(const struct ast_sorcery *sorcery, void *data, const char *type, const struct ast_variable *fields);
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static void sorcery_config_retrieve_multiple(const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects,
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const struct ast_variable *fields);
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2013-02-16 16:24:21 +00:00
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static void sorcery_config_retrieve_regex(const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects, const char *regex);
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2013-01-25 14:01:04 +00:00
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static void sorcery_config_close(void *data);
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static struct ast_sorcery_wizard config_object_wizard = {
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.name = "config",
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.open = sorcery_config_open,
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.load = sorcery_config_load,
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.reload = sorcery_config_reload,
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.retrieve_id = sorcery_config_retrieve_id,
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.retrieve_fields = sorcery_config_retrieve_fields,
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.retrieve_multiple = sorcery_config_retrieve_multiple,
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2013-02-16 16:24:21 +00:00
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.retrieve_regex = sorcery_config_retrieve_regex,
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2013-01-25 14:01:04 +00:00
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.close = sorcery_config_close,
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};
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/*! \brief Destructor function for sorcery config */
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static void sorcery_config_destructor(void *obj)
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{
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struct sorcery_config *config = obj;
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ao2_global_obj_release(config->objects);
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ast_rwlock_destroy(&config->objects.lock);
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ast_variables_destroy(config->criteria);
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}
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/*! \brief Hashing function for sorcery objects */
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static int sorcery_config_hash(const void *obj, const int flags)
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{
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const char *id = obj;
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return ast_str_hash(flags & OBJ_KEY ? id : ast_sorcery_object_get_id(obj));
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}
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/*! \brief Comparator function for sorcery objects */
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static int sorcery_config_cmp(void *obj, void *arg, int flags)
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{
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const char *id = arg;
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return !strcmp(ast_sorcery_object_get_id(obj), flags & OBJ_KEY ? id : ast_sorcery_object_get_id(arg)) ? CMP_MATCH | CMP_STOP : 0;
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}
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static int sorcery_config_fields_cmp(void *obj, void *arg, int flags)
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{
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const struct sorcery_config_fields_cmp_params *params = arg;
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RAII_VAR(struct ast_variable *, objset, NULL, ast_variables_destroy);
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RAII_VAR(struct ast_variable *, diff, NULL, ast_variables_destroy);
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2013-02-16 16:24:21 +00:00
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if (params->regex) {
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/* If a regular expression has been provided see if it matches, otherwise move on */
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if (!regexec(params->regex, ast_sorcery_object_get_id(obj), 0, NULL, 0)) {
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ao2_link(params->container, obj);
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}
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return 0;
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} else if (params->fields &&
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2013-01-25 14:01:04 +00:00
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(!(objset = ast_sorcery_objectset_create(params->sorcery, obj)) ||
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(ast_sorcery_changeset_create(objset, params->fields, &diff)) ||
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diff)) {
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2013-02-16 16:24:21 +00:00
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/* If we can't turn the object into an object set OR if differences exist between the fields
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* passed in and what are present on the object they are not a match.
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*/
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2013-01-25 14:01:04 +00:00
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return 0;
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}
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if (params->container) {
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ao2_link(params->container, obj);
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/* As multiple objects are being returned keep going */
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return 0;
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} else {
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/* Immediately stop and return, we only want a single object */
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return CMP_MATCH | CMP_STOP;
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}
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}
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static void *sorcery_config_retrieve_fields(const struct ast_sorcery *sorcery, void *data, const char *type, const struct ast_variable *fields)
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{
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struct sorcery_config *config = data;
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RAII_VAR(struct ao2_container *, objects, ao2_global_obj_ref(config->objects), ao2_cleanup);
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struct sorcery_config_fields_cmp_params params = {
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.sorcery = sorcery,
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.fields = fields,
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.container = NULL,
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};
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/* If no fields are present return nothing, we require *something*, same goes if no objects exist yet */
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if (!objects || !fields) {
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return NULL;
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}
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return ao2_callback(objects, 0, sorcery_config_fields_cmp, ¶ms);
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}
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static void *sorcery_config_retrieve_id(const struct ast_sorcery *sorcery, void *data, const char *type, const char *id)
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{
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struct sorcery_config *config = data;
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RAII_VAR(struct ao2_container *, objects, ao2_global_obj_ref(config->objects), ao2_cleanup);
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2015-02-15 17:43:21 +00:00
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return objects ? ao2_find(objects, id, OBJ_KEY) : NULL;
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2013-01-25 14:01:04 +00:00
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}
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static void sorcery_config_retrieve_multiple(const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects, const struct ast_variable *fields)
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{
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struct sorcery_config *config = data;
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RAII_VAR(struct ao2_container *, config_objects, ao2_global_obj_ref(config->objects), ao2_cleanup);
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struct sorcery_config_fields_cmp_params params = {
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.sorcery = sorcery,
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.fields = fields,
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.container = objects,
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};
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if (!config_objects) {
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return;
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}
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ao2_callback(config_objects, 0, sorcery_config_fields_cmp, ¶ms);
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}
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2013-02-16 16:24:21 +00:00
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static void sorcery_config_retrieve_regex(const struct ast_sorcery *sorcery, void *data, const char *type, struct ao2_container *objects, const char *regex)
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{
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struct sorcery_config *config = data;
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RAII_VAR(struct ao2_container *, config_objects, ao2_global_obj_ref(config->objects), ao2_cleanup);
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regex_t expression;
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struct sorcery_config_fields_cmp_params params = {
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.sorcery = sorcery,
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.container = objects,
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.regex = &expression,
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};
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if (!config_objects || regcomp(&expression, regex, REG_EXTENDED | REG_NOSUB)) {
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return;
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}
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ao2_callback(config_objects, 0, sorcery_config_fields_cmp, ¶ms);
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regfree(&expression);
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}
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2013-01-25 14:01:04 +00:00
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/*! \brief Internal function which determines if criteria has been met for considering an object set applicable */
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static int sorcery_is_criteria_met(struct ast_variable *objset, struct ast_variable *criteria)
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{
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RAII_VAR(struct ast_variable *, diff, NULL, ast_variables_destroy);
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return (!criteria || (!ast_sorcery_changeset_create(objset, criteria, &diff) && !diff)) ? 1 : 0;
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}
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static void sorcery_config_internal_load(void *data, const struct ast_sorcery *sorcery, const char *type, unsigned int reload)
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{
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struct sorcery_config *config = data;
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struct ast_flags flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
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2013-02-07 17:57:10 +00:00
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struct ast_config *cfg = ast_config_load2(config->filename, config->uuid, flags);
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2014-10-13 16:12:17 +00:00
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struct ast_category *category = NULL;
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2013-01-25 14:01:04 +00:00
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RAII_VAR(struct ao2_container *, objects, NULL, ao2_cleanup);
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const char *id = NULL;
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2015-02-15 17:43:21 +00:00
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unsigned int buckets = 0;
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2013-01-25 14:01:04 +00:00
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if (!cfg) {
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2013-01-25 14:23:46 +00:00
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ast_log(LOG_ERROR, "Unable to load config file '%s'\n", config->filename);
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2013-01-25 14:01:04 +00:00
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return;
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} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
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ast_debug(1, "Config file '%s' was unchanged\n", config->filename);
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return;
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} else if (cfg == CONFIG_STATUS_FILEINVALID) {
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ast_log(LOG_ERROR, "Contents of config file '%s' are invalid and cannot be parsed\n", config->filename);
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return;
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}
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2015-02-15 17:43:21 +00:00
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if (!config->buckets) {
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while ((category = ast_category_browse_filtered(cfg, NULL, category, NULL))) {
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/* If given criteria has not been met skip the category, it is not applicable */
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if (!sorcery_is_criteria_met(ast_category_first(category), config->criteria)) {
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continue;
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}
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buckets++;
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}
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/* Determine the optimal number of buckets */
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while (buckets && !ast_is_prime(buckets)) {
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/* This purposely goes backwards to ensure that the container doesn't have a ton of
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* empty buckets for objects that will never get added.
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*/
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buckets--;
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}
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if (!buckets) {
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buckets = 1;
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}
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} else {
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buckets = config->buckets;
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}
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ast_debug(2, "Using bucket size of '%d' for objects of type '%s' from '%s'\n",
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buckets, type, config->filename);
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if (!(objects = ao2_container_alloc_options(AO2_ALLOC_OPT_LOCK_NOLOCK, buckets,
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sorcery_config_hash, sorcery_config_cmp))) {
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2013-01-25 14:01:04 +00:00
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ast_log(LOG_ERROR, "Could not create bucket for new objects from '%s', keeping existing objects\n",
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config->filename);
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ast_config_destroy(cfg);
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return;
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}
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2014-10-13 16:12:17 +00:00
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while ((category = ast_category_browse_filtered(cfg, NULL, category, NULL))) {
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2013-01-25 14:01:04 +00:00
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RAII_VAR(void *, obj, NULL, ao2_cleanup);
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2014-10-13 16:12:17 +00:00
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id = ast_category_get_name(category);
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2013-01-25 14:01:04 +00:00
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/* If given criteria has not been met skip the category, it is not applicable */
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2014-10-13 16:12:17 +00:00
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if (!sorcery_is_criteria_met(ast_category_first(category), config->criteria)) {
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2013-01-25 14:01:04 +00:00
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continue;
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}
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if (!(obj = ast_sorcery_alloc(sorcery, type, id)) ||
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2014-10-13 16:12:17 +00:00
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ast_sorcery_objectset_apply(sorcery, obj, ast_category_first(category))) {
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2013-01-25 14:01:04 +00:00
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if (config->file_integrity) {
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ast_log(LOG_ERROR, "Config file '%s' could not be loaded due to error with object '%s' of type '%s'\n",
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config->filename, id, type);
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ast_config_destroy(cfg);
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|
|
|
return;
|
2013-12-17 18:35:39 +00:00
|
|
|
} else {
|
|
|
|
ast_log(LOG_ERROR, "Could not create an object of type '%s' with id '%s' from configuration file '%s'\n",
|
|
|
|
type, id, config->filename);
|
2013-01-25 14:01:04 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ao2_cleanup(obj);
|
|
|
|
|
|
|
|
/* To ensure we don't lose the object that already exists we retrieve it from the old objects container and add it to the new one */
|
|
|
|
if (!(obj = sorcery_config_retrieve_id(sorcery, data, type, id))) {
|
|
|
|
continue;
|
|
|
|
}
|
2014-12-12 14:04:06 +00:00
|
|
|
|
|
|
|
ast_log(LOG_NOTICE, "Retaining existing configuration for object of type '%s' with id '%s'\n", type, id);
|
2013-01-25 14:01:04 +00:00
|
|
|
}
|
|
|
|
|
2015-02-15 17:43:21 +00:00
|
|
|
ao2_link(objects, obj);
|
2013-01-25 14:01:04 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ao2_global_obj_replace_unref(config->objects, objects);
|
|
|
|
ast_config_destroy(cfg);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sorcery_config_load(void *data, const struct ast_sorcery *sorcery, const char *type)
|
|
|
|
{
|
|
|
|
sorcery_config_internal_load(data, sorcery, type, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sorcery_config_reload(void *data, const struct ast_sorcery *sorcery, const char *type)
|
|
|
|
{
|
|
|
|
sorcery_config_internal_load(data, sorcery, type, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *sorcery_config_open(const char *data)
|
|
|
|
{
|
|
|
|
char *tmp = ast_strdupa(data), *filename = strsep(&tmp, ","), *option;
|
|
|
|
struct sorcery_config *config;
|
|
|
|
|
|
|
|
if (ast_strlen_zero(filename) || !(config = ao2_alloc_options(sizeof(*config) + strlen(filename) + 1, sorcery_config_destructor, AO2_ALLOC_OPT_LOCK_NOLOCK))) {
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2013-03-28 23:59:20 +00:00
|
|
|
ast_uuid_generate_str(config->uuid, sizeof(config->uuid));
|
2013-02-07 17:57:10 +00:00
|
|
|
|
2013-01-25 14:01:04 +00:00
|
|
|
ast_rwlock_init(&config->objects.lock);
|
|
|
|
strcpy(config->filename, filename);
|
|
|
|
|
|
|
|
while ((option = strsep(&tmp, ","))) {
|
|
|
|
char *name = strsep(&option, "="), *value = option;
|
|
|
|
|
|
|
|
if (!strcasecmp(name, "buckets")) {
|
2014-05-09 22:49:26 +00:00
|
|
|
if (sscanf(value, "%30u", &config->buckets) != 1) {
|
2015-02-15 17:43:21 +00:00
|
|
|
ast_log(LOG_ERROR, "Unsupported bucket size of '%s' used for configuration file '%s', defaulting to automatic determination\n",
|
|
|
|
value, filename);
|
2013-01-25 14:01:04 +00:00
|
|
|
}
|
|
|
|
} else if (!strcasecmp(name, "integrity")) {
|
|
|
|
if (!strcasecmp(value, "file")) {
|
|
|
|
config->file_integrity = 1;
|
|
|
|
} else if (!strcasecmp(value, "object")) {
|
|
|
|
config->file_integrity = 0;
|
|
|
|
} else {
|
|
|
|
ast_log(LOG_ERROR, "Unsupported integrity value of '%s' used for configuration file '%s', defaulting to 'object'\n",
|
|
|
|
value, filename);
|
|
|
|
}
|
|
|
|
} else if (!strcasecmp(name, "criteria")) {
|
|
|
|
char *field = strsep(&value, "=");
|
|
|
|
struct ast_variable *criteria = ast_variable_new(field, value, "");
|
|
|
|
|
|
|
|
if (criteria) {
|
|
|
|
criteria->next = config->criteria;
|
|
|
|
config->criteria = criteria;
|
|
|
|
} else {
|
|
|
|
/* This is fatal since not following criteria would potentially yield invalid objects */
|
|
|
|
ast_log(LOG_ERROR, "Could not create criteria entry of field '%s' with value '%s' for configuration file '%s'\n",
|
|
|
|
field, value, filename);
|
|
|
|
ao2_ref(config, -1);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
ast_log(LOG_ERROR, "Unsupported option '%s' used for configuration file '%s'\n", name, filename);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return config;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sorcery_config_close(void *data)
|
|
|
|
{
|
|
|
|
struct sorcery_config *config = data;
|
|
|
|
|
|
|
|
ao2_ref(config, -1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int load_module(void)
|
|
|
|
{
|
|
|
|
if (ast_sorcery_wizard_register(&config_object_wizard)) {
|
|
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int unload_module(void)
|
|
|
|
{
|
|
|
|
ast_sorcery_wizard_unregister(&config_object_wizard);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-01-25 20:46:09 +00:00
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER, "Sorcery Configuration File Object Wizard",
|
2014-07-25 16:47:17 +00:00
|
|
|
.support_level = AST_MODULE_SUPPORT_CORE,
|
2013-01-25 14:01:04 +00:00
|
|
|
.load = load_module,
|
|
|
|
.unload = unload_module,
|
2013-03-07 21:14:18 +00:00
|
|
|
.load_pri = AST_MODPRI_REALTIME_DRIVER,
|
2013-01-25 14:01:04 +00:00
|
|
|
);
|