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asterisk/main/config_options.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2012, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
* \brief Configuration Option-handling
* \author Terry Wilson <twilson@digium.com>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include <regex.h>
#include "asterisk/_private.h"
#include "asterisk/config.h"
#include "asterisk/config_options.h"
#include "asterisk/stringfields.h"
#include "asterisk/acl.h"
#include "asterisk/app.h"
#include "asterisk/frame.h"
#include "asterisk/xmldoc.h"
#include "asterisk/cli.h"
#include "asterisk/term.h"
#include "asterisk/format_cap.h"
#ifdef LOW_MEMORY
#define CONFIG_OPT_BUCKETS 5
#else
#define CONFIG_OPT_BUCKETS 53
#endif /* LOW_MEMORY */
/*! \brief Bits of aco_info that shouldn't be assigned outside this file
* \internal
*/
struct aco_info_internal {
void *pending; /*!< The user-defined config object awaiting application */
};
struct aco_type_internal {
regex_t *regex;
struct ao2_container *opts; /*!< The container of options registered to the aco_info */
};
struct aco_option {
const char *name;
const char *aliased_to;
const char *default_val;
enum aco_matchtype match_type;
regex_t *name_regex;
struct aco_type **obj;
enum aco_option_type type;
aco_option_handler handler;
unsigned int flags;
unsigned int no_doc:1;
#ifdef AST_DEVMODE
unsigned int doc_unavailable:1;
#endif
unsigned char deprecated:1;
size_t argc;
intptr_t args[0];
};
#ifdef AST_XML_DOCS
static struct ao2_container *xmldocs;
/*! \brief Value of the aco_option_type enum as strings */
static char *aco_option_type_string[] = {
"ACL", /* OPT_ACL_T, */
"Boolean", /* OPT_BOOL_T, */
"Boolean", /* OPT_BOOLFLAG_T, */
"String", /* OPT_CHAR_ARRAY_T, */
"Codec", /* OPT_CODEC_T, */
"Custom", /* OPT_CUSTOM_T, */
"Double", /* OPT_DOUBLE_T, */
"Integer", /* OPT_INT_T, */
"None", /* OPT_NOOP_T, */
"IP Address", /* OPT_SOCKADDR_T, */
"String", /* OPT_STRINGFIELD_T, */
"Unsigned Integer", /* OPT_UINT_T, */
"Boolean", /* OPT_YESNO_T, */
"Time Length", /* OPT_TIMELEN_T, */
};
#endif /* AST_XML_DOCS */
void *aco_pending_config(struct aco_info *info)
{
if (!(info && info->internal)) {
ast_log(LOG_ERROR, "This may not be called without an initialized aco_info!\n");
return NULL;
}
return info->internal->pending;
}
static void config_option_destroy(void *obj)
{
struct aco_option *opt = obj;
if (opt->match_type == ACO_REGEX && opt->name_regex) {
regfree(opt->name_regex);
ast_free(opt->name_regex);
}
}
static int int_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int uint_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int timelen_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int double_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int sockaddr_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int stringfield_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int bool_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int boolflag_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int acl_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int codec_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int noop_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
static int chararray_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj);
#ifdef AST_XML_DOCS
static int xmldoc_update_config_type(const char *module, const char *name, const char *category, const char *matchfield, const char *matchvalue, enum aco_category_op category_match);
static int xmldoc_update_config_option(struct aco_type **types, const char *module, const char *name, const char *object_name, const char *default_value, unsigned int regex, enum aco_option_type type);
#endif
static aco_option_handler ast_config_option_default_handler(enum aco_option_type type)
{
switch(type) {
case OPT_ACL_T: return acl_handler_fn;
case OPT_BOOL_T: return bool_handler_fn;
/* Reading from config files, BOOL and YESNO are handled exactly the
* same. Their difference is in how they are rendered to users
*/
case OPT_YESNO_T: return bool_handler_fn;
case OPT_BOOLFLAG_T: return boolflag_handler_fn;
case OPT_CHAR_ARRAY_T: return chararray_handler_fn;
case OPT_CODEC_T: return codec_handler_fn;
case OPT_DOUBLE_T: return double_handler_fn;
case OPT_INT_T: return int_handler_fn;
case OPT_NOOP_T: return noop_handler_fn;
case OPT_SOCKADDR_T: return sockaddr_handler_fn;
case OPT_STRINGFIELD_T: return stringfield_handler_fn;
case OPT_UINT_T: return uint_handler_fn;
case OPT_TIMELEN_T: return timelen_handler_fn;
case OPT_CUSTOM_T: return NULL;
}
return NULL;
}
static regex_t *build_regex(const char *text)
{
int res;
regex_t *regex;
if (!(regex = ast_malloc(sizeof(*regex)))) {
return NULL;
}
if ((res = regcomp(regex, text, REG_EXTENDED | REG_ICASE | REG_NOSUB))) {
size_t len = regerror(res, regex, NULL, 0);
char buf[len];
regerror(res, regex, buf, len);
ast_log(LOG_ERROR, "Could not compile regex '%s': %s\n", text, buf);
ast_free(regex);
return NULL;
}
return regex;
}
static int link_option_to_types(struct aco_info *info, struct aco_type **types, struct aco_option *opt)
{
size_t idx = 0;
struct aco_type *type;
while ((type = types[idx++])) {
if (!type->internal) {
ast_log(LOG_ERROR, "Attempting to register option using uninitialized type\n");
return -1;
}
if (!ao2_link(type->internal->opts, opt)) {
do {
ao2_unlink(types[idx - 1]->internal->opts, opt);
} while (--idx);
return -1;
}
#ifdef AST_XML_DOCS
if (!info->hidden && !opt->no_doc &&
xmldoc_update_config_option(types, info->module, opt->name, type->name, opt->default_val, opt->match_type == ACO_REGEX, opt->type)) {
#ifdef AST_DEVMODE
opt->doc_unavailable = 1;
#endif
}
#endif
}
/* The container(s) should hold the only ref to opt */
ao2_ref(opt, -1);
return 0;
}
int aco_option_register_deprecated(struct aco_info *info, const char *name, struct aco_type **types, const char *aliased_to)
{
struct aco_option *opt;
if (!info || ast_strlen_zero(name) || ast_strlen_zero(aliased_to)) {
return -1;
}
opt = ao2_alloc_options(sizeof(*opt), config_option_destroy, AO2_ALLOC_OPT_LOCK_NOLOCK);
if (!opt) {
return -1;
}
opt->name = name;
opt->aliased_to = aliased_to;
opt->deprecated = 1;
opt->match_type = ACO_EXACT;
if (link_option_to_types(info, types, opt)) {
ao2_ref(opt, -1);
return -1;
}
return 0;
}
unsigned int aco_option_get_flags(const struct aco_option *option)
{
return option->flags;
}
intptr_t aco_option_get_argument(const struct aco_option *option, unsigned int position)
{
return option->args[position];
}
#ifdef AST_XML_DOCS
/*! \internal
* \brief Find a particular ast_xml_doc_item from it's parent config_info, types, and name
*/
static struct ast_xml_doc_item *find_xmldoc_option(struct ast_xml_doc_item *config_info, struct aco_type **types, const char *name)
{
struct ast_xml_doc_item *iter = config_info;
if (!iter) {
return NULL;
}
/* First is just the configInfo, we can skip it */
while ((iter = AST_LIST_NEXT(iter, next))) {
size_t x;
if (strcasecmp(iter->name, name)) {
continue;
}
for (x = 0; types[x]; x++) {
/* All we care about is that at least one type has the option */
if (!strcasecmp(types[x]->name, iter->ref)) {
return iter;
}
}
}
return NULL;
}
/*! \internal
* \brief Find a particular ast_xml_doc_item from it's parent config_info and name
*/
static struct ast_xml_doc_item *find_xmldoc_type(struct ast_xml_doc_item *config_info, const char *name)
{
struct ast_xml_doc_item *iter = config_info;
if (!iter) {
return NULL;
}
/* First is just the config Info, skip it */
while ((iter = AST_LIST_NEXT(iter, next))) {
if (!strcasecmp(iter->type, "configObject") && !strcasecmp(iter->name, name)) {
break;
}
}
return iter;
}
#endif /* AST_XML_DOCS */
int __aco_option_register(struct aco_info *info, const char *name, enum aco_matchtype matchtype, struct aco_type **types,
const char *default_val, enum aco_option_type kind, aco_option_handler handler, unsigned int flags,
unsigned int no_doc, size_t argc, ...)
{
struct aco_option *opt;
va_list ap;
int tmp;
/* Custom option types require a handler */
if (!handler && kind == OPT_CUSTOM_T) {
return -1;
}
if (!(types && types[0])) {
return -1;
}
opt = ao2_alloc_options(sizeof(*opt) + argc * sizeof(opt->args[0]),
config_option_destroy, AO2_ALLOC_OPT_LOCK_NOLOCK);
if (!opt) {
return -1;
}
if (matchtype == ACO_REGEX && !(opt->name_regex = build_regex(name))) {
ao2_ref(opt, -1);
return -1;
}
va_start(ap, argc);
for (tmp = 0; tmp < argc; tmp++) {
opt->args[tmp] = va_arg(ap, size_t);
}
va_end(ap);
opt->name = name;
opt->match_type = matchtype;
opt->default_val = default_val;
opt->type = kind;
opt->handler = handler;
opt->flags = flags;
opt->argc = argc;
opt->no_doc = no_doc;
if (!opt->handler && !(opt->handler = ast_config_option_default_handler(opt->type))) {
/* This should never happen */
ast_log(LOG_ERROR, "No handler provided, and no default handler exists for type %u\n", opt->type);
ao2_ref(opt, -1);
return -1;
};
if (link_option_to_types(info, types, opt)) {
ao2_ref(opt, -1);
return -1;
}
return 0;
}
static int config_opt_hash(const void *obj, const int flags)
{
const struct aco_option *opt = obj;
const char *name = (flags & OBJ_KEY) ? obj : opt->name;
return ast_str_case_hash(name);
}
static int config_opt_cmp(void *obj, void *arg, int flags)
{
struct aco_option *opt1 = obj, *opt2 = arg;
const char *name = (flags & OBJ_KEY) ? arg : opt2->name;
return strcasecmp(opt1->name, name) ? 0 : CMP_MATCH | CMP_STOP;
}
static int find_option_cb(void *obj, void *arg, int flags)
{
struct aco_option *match = obj;
const char *name = arg;
switch (match->match_type) {
case ACO_EXACT:
return strcasecmp(name, match->name) ? 0 : CMP_MATCH | CMP_STOP;
case ACO_PREFIX:
return strncasecmp(name, match->name, strlen(match->name)) ? 0 : CMP_MATCH | CMP_STOP;
case ACO_REGEX:
return regexec(match->name_regex, name, 0, NULL, 0) ? 0 : CMP_MATCH | CMP_STOP;
}
ast_log(LOG_ERROR, "Unknown match type. This should not be possible.\n");
return CMP_STOP;
}
static struct aco_option *aco_option_find(struct aco_type *type, const char *name)
{
struct aco_option *opt;
if (!type || !type->internal || !type->internal->opts) {
ast_log(LOG_NOTICE, "Attempting to use NULL or unitialized config type\n");
return NULL;
}
/* Try an exact match with OBJ_KEY for the common/fast case, then iterate through
* all options for the regex cases */
if (!(opt = ao2_callback(type->internal->opts, OBJ_KEY, find_option_cb, (void *) name))) {
opt = ao2_callback(type->internal->opts, 0, find_option_cb, (void *) name);
}
return opt;
}
struct ao2_container *aco_option_container_alloc(void)
{
return ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0, CONFIG_OPT_BUCKETS,
config_opt_hash, NULL, config_opt_cmp);
}
static int internal_aco_type_category_check(struct aco_type *match, const char *category)
{
const char **categories = (const char **)match->category;
switch (match->category_match) {
case ACO_WHITELIST:
return regexec(match->internal->regex, category, 0, NULL, 0);
case ACO_BLACKLIST:
return !regexec(match->internal->regex, category, 0, NULL, 0);
case ACO_WHITELIST_EXACT:
return strcasecmp(match->category, category);
case ACO_BLACKLIST_EXACT:
return !strcasecmp(match->category, category);
case ACO_WHITELIST_ARRAY:
while (*categories) {
if (!strcasecmp(*categories, category)) {
return 0;
}
categories++;
}
return -1;
case ACO_BLACKLIST_ARRAY:
while (*categories) {
if (!strcasecmp(*categories, category)) {
return -1;
}
categories++;
}
return 0;
}
return -1;
}
static struct aco_type *internal_aco_type_find(struct aco_file *file, struct ast_config *cfg, const char *category)
{
size_t x;
struct aco_type *match;
const char *val;
for (x = 0, match = file->types[x]; match; match = file->types[++x]) {
/* First make sure we are an object that can service this category */
if (internal_aco_type_category_check(match, category)) {
continue;
}
/* Then, see if we need to match a particular field */
if (!ast_strlen_zero(match->matchfield) && (!ast_strlen_zero(match->matchvalue) || match->matchfunc)) {
if (!(val = ast_variable_retrieve(cfg, category, match->matchfield))) {
ast_log(LOG_ERROR, "Required match field '%s' not found\n", match->matchfield);
return NULL;
}
if (match->matchfunc) {
if (!match->matchfunc(val)) {
continue;
}
} else if (strcasecmp(val, match->matchvalue)) {
continue;
}
}
/* If we get this far, we're a match */
break;
}
return match;
}
static int is_preload(struct aco_file *file, const char *cat)
{
int i;
if (!file->preload) {
return 0;
}
for (i = 0; !ast_strlen_zero(file->preload[i]); i++) {
if (!strcasecmp(cat, file->preload[i])) {
return 1;
}
}
return 0;
}
static int process_category(struct ast_config *cfg, struct aco_info *info, struct aco_file *file, const char *cat, int preload) {
RAII_VAR(void *, new_item, NULL, ao2_cleanup);
struct aco_type *type;
/* For global types, field is the global option struct. For non-global, it is the container for items.
* We do not grab a reference to these objects, as the info already holds references to them. This
* pointer is just a convenience. Do not actually store it somewhere. */
void **field;
regex_t *regex_skip;
/* Skip preloaded categories if we aren't preloading */
if (!preload && is_preload(file, cat)) {
return 0;
}
/* Skip the category if we've been told to ignore it */
if (!ast_strlen_zero(file->skip_category)) {
regex_skip = build_regex(file->skip_category);
if (!regexec(regex_skip, cat, 0, NULL, 0)) {
regfree(regex_skip);
ast_free(regex_skip);
return 0;
}
regfree(regex_skip);
ast_free(regex_skip);
}
/* Find aco_type by category, if not found it is an error */
if (!(type = internal_aco_type_find(file, cfg, cat))) {
ast_log(LOG_ERROR, "Could not find config type for category '%s' in '%s'\n", cat, file->filename);
return -1;
}
if (type->type == ACO_IGNORE) {
return 0;
}
field = info->internal->pending + type->item_offset;
if (!*field) {
ast_log(LOG_ERROR, "In %s: %s - No object to update!\n", file->filename, cat);
return -1;
}
if (type->type == ACO_GLOBAL && *field) {
if (aco_process_category_options(type, cfg, cat, *field)) {
ast_log(LOG_ERROR, "In %s: Processing options for %s failed\n", file->filename, cat);
return -1;
}
} else if (type->type == ACO_ITEM) {
int new = 0;
/* If we have multiple definitions of a category in a file, or can set the values from multiple
* files, look up the entry if we've already added it so we can merge the values together.
* Otherwise, alloc a new item. */
if (*field) {
if (!(new_item = type->item_find(*field, cat))) {
if (!(new_item = type->item_alloc(cat))) {
ast_log(LOG_ERROR, "In %s: Could not create item for %s\n", file->filename, cat);
return -1;
}
if (aco_set_defaults(type, cat, new_item)) {
ast_log(LOG_ERROR, "In %s: Setting defaults for %s failed\n", file->filename, cat);
return -1;
}
new = 1;
}
}
if (type->item_pre_process && type->item_pre_process(new_item)) {
ast_log(LOG_ERROR, "In %s: Preprocess callback for %s failed\n", file->filename, cat);
return -1;
}
if (aco_process_category_options(type, cfg, cat, new_item)) {
ast_log(LOG_ERROR, "In %s: Processing options for %s failed\n", file->filename, cat);
return -1;
}
if (type->item_prelink && type->item_prelink(new_item)) {
ast_log(LOG_ERROR, "In %s: Pre-link callback for %s failed\n", file->filename, cat);
return -1;
}
if (new && !ao2_link(*field, new_item)) {
ast_log(LOG_ERROR, "In %s: Linking config for %s failed\n", file->filename, cat);
return -1;
}
}
return 0;
}
static int apply_config(struct aco_info *info)
{
ao2_global_obj_replace_unref(*info->global_obj, info->internal->pending);
return 0;
}
static enum aco_process_status internal_process_ast_config(struct aco_info *info, struct aco_file *file, struct ast_config *cfg)
{
const char *cat = NULL;
if (file->preload) {
int i;
for (i = 0; !ast_strlen_zero(file->preload[i]); i++) {
if (process_category(cfg, info, file, file->preload[i], 1)) {
return ACO_PROCESS_ERROR;
}
}
}
while ((cat = ast_category_browse(cfg, cat))) {
if (process_category(cfg, info, file, cat, 0)) {
return ACO_PROCESS_ERROR;
}
}
return ACO_PROCESS_OK;
}
enum aco_process_status aco_process_ast_config(struct aco_info *info, struct aco_file *file, struct ast_config *cfg)
{
if (!info->internal) {
ast_log(LOG_ERROR, "Attempt to process %s with uninitialized aco_info\n", file->filename);
return ACO_PROCESS_ERROR;
}
if (!(info->internal->pending = info->snapshot_alloc())) {
ast_log(LOG_ERROR, "In %s: Could not allocate temporary objects\n", file->filename);
goto error;
}
if (internal_process_ast_config(info, file, cfg)) {
goto error;
}
if (info->pre_apply_config && info->pre_apply_config()) {
goto error;
}
if (apply_config(info)) {
goto error;
};
ao2_cleanup(info->internal->pending);
info->internal->pending = NULL;
return ACO_PROCESS_OK;
error:
ao2_cleanup(info->internal->pending);
info->internal->pending = NULL;
return ACO_PROCESS_ERROR;
}
enum aco_process_status aco_process_config(struct aco_info *info, int reload)
{
struct ast_config *cfg;
struct ast_flags cfg_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0, };
int res = ACO_PROCESS_OK;
int file_count = 0;
struct aco_file *file;
if (!info->internal) {
ast_log(LOG_ERROR, "Attempting to process uninitialized aco_info\n");
return ACO_PROCESS_ERROR;
}
if (!(info->files[0])) {
ast_log(LOG_ERROR, "No filename given, cannot proceed!\n");
return ACO_PROCESS_ERROR;
}
if (!(info->internal->pending = info->snapshot_alloc())) {
ast_log(LOG_ERROR, "In %s: Could not allocate temporary objects\n", info->module);
return ACO_PROCESS_ERROR;
}
while (res != ACO_PROCESS_ERROR && (file = info->files[file_count++])) {
const char *filename = file->filename;
struct aco_type *match;
int i;
/* set defaults for global objects */
for (i = 0, match = file->types[i]; match; match = file->types[++i]) {
void **field = info->internal->pending + match->item_offset;
if (match->type == ACO_IGNORE) {
continue;
}
if (match->type != ACO_GLOBAL || !*field) {
continue;
}
if (aco_set_defaults(match, match->category, *field)) {
ast_log(LOG_ERROR, "In %s: Setting defaults for %s failed\n", file->filename, match->category);
res = ACO_PROCESS_ERROR;
break;
}
}
if (res == ACO_PROCESS_ERROR) {
break;
}
try_alias:
cfg = ast_config_load(filename, cfg_flags);
if (!cfg || cfg == CONFIG_STATUS_FILEMISSING) {
if (file->alias && strcmp(file->alias, filename)) {
filename = file->alias;
goto try_alias;
}
ast_log(LOG_ERROR, "Unable to load config file '%s'\n", file->filename);
res = ACO_PROCESS_ERROR;
break;
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
ast_debug(1, "%s was unchanged\n", file->filename);
res = ACO_PROCESS_UNCHANGED;
continue;
} else if (cfg == CONFIG_STATUS_FILEINVALID) {
ast_log(LOG_ERROR, "Contents of %s are invalid and cannot be parsed\n",
file->filename);
res = ACO_PROCESS_ERROR;
break;
}
/* A file got loaded. */
if (reload) {
/* Must do any subsequent file loads unconditionally. */
reload = 0;
ast_clear_flag(&cfg_flags, CONFIG_FLAG_FILEUNCHANGED);
if (file_count != 1) {
/*
* Must restart loading to load all config files since a file
* after the first one changed.
*/
file_count = 0;
} else {
res = internal_process_ast_config(info, file, cfg);
}
} else {
res = internal_process_ast_config(info, file, cfg);
}
ast_config_destroy(cfg);
}
if (res != ACO_PROCESS_OK) {
goto end;
}
if (info->pre_apply_config && info->pre_apply_config()) {
res = ACO_PROCESS_ERROR;
goto end;
}
if (apply_config(info)) {
res = ACO_PROCESS_ERROR;
goto end;
}
if (info->post_apply_config) {
info->post_apply_config();
}
end:
ao2_cleanup(info->internal->pending);
info->internal->pending = NULL;
return res;
}
int aco_process_var(struct aco_type *type, const char *cat, struct ast_variable *var, void *obj)
{
RAII_VAR(struct aco_option *, opt, aco_option_find(type, var->name), ao2_cleanup);
if (opt && opt->deprecated && !ast_strlen_zero(opt->aliased_to)) {
const char *alias = ast_strdupa(opt->aliased_to);
ast_log(LOG_WARNING, "At line %d of %s option '%s' is deprecated. Use '%s' instead\n", var->lineno, var->file, var->name, alias);
ao2_ref(opt, -1);
opt = aco_option_find(type, alias);
}
if (!opt) {
ast_log(LOG_ERROR, "Could not find option suitable for category '%s' named '%s' at line %d of %s\n", cat, var->name, var->lineno, var->file);
return -1;
}
if (!opt->handler) {
/* It should be impossible for an option to not have a handler */
ast_log(LOG_ERROR, "BUG! Somehow a config option for %s/%s was created with no handler!\n", cat, var->name);
return -1;
}
#ifdef AST_DEVMODE
if (opt->doc_unavailable) {
ast_log(LOG_ERROR, "Config option '%s' of type '%s' is not completely documented and can not be set\n", var->name, type->name);
return -1;
}
#endif
if (opt->handler(opt, var, obj)) {
ast_log(LOG_ERROR, "Error parsing %s=%s at line %d of %s\n", var->name, var->value, var->lineno, var->file);
return -1;
}
return 0;
}
int aco_process_category_options(struct aco_type *type, struct ast_config *cfg, const char *cat, void *obj)
{
struct ast_variable *var;
for (var = ast_variable_browse(cfg, cat); var; var = var->next) {
if (aco_process_var(type, cat, var, obj)) {
return -1;
}
}
return 0;
}
static void internal_type_destroy(struct aco_type *type)
{
/* If we've already had all our internal data cleared out,
* then there's no need to proceed further
*/
if (!type->internal) {
return;
}
if (type->internal->regex) {
regfree(type->internal->regex);
ast_free(type->internal->regex);
}
ao2_cleanup(type->internal->opts);
type->internal->opts = NULL;
ast_free(type->internal);
type->internal = NULL;
}
static void internal_file_types_destroy(struct aco_file *file)
{
size_t x;
struct aco_type *t;
for (x = 0, t = file->types[x]; t; t = file->types[++x]) {
internal_type_destroy(t);
t = NULL;
}
}
static int internal_type_init(struct aco_type *type)
{
if (!(type->internal = ast_calloc(1, sizeof(*type->internal)))) {
return -1;
}
switch (type->category_match) {
case ACO_BLACKLIST:
case ACO_WHITELIST:
if (!(type->internal->regex = build_regex(type->category))) {
internal_type_destroy(type);
return -1;
}
break;
case ACO_BLACKLIST_EXACT:
case ACO_WHITELIST_EXACT:
case ACO_BLACKLIST_ARRAY:
case ACO_WHITELIST_ARRAY:
break;
}
if (!(type->internal->opts = aco_option_container_alloc())) {
internal_type_destroy(type);
return -1;
}
return 0;
}
int aco_info_init(struct aco_info *info)
{
size_t x = 0, y = 0;
struct aco_file *file;
struct aco_type *type;
if (!(info->internal = ast_calloc(1, sizeof(*info->internal)))) {
return -1;
}
while ((file = info->files[x++])) {
while ((type = file->types[y++])) {
if (internal_type_init(type)) {
goto error;
}
#ifdef AST_XML_DOCS
if (!info->hidden &&
!type->hidden &&
type->type != ACO_IGNORE &&
xmldoc_update_config_type(info->module, type->name, type->category, type->matchfield, type->matchvalue, type->category_match)) {
goto error;
}
#endif /* AST_XML_DOCS */
}
y = 0;
}
return 0;
error:
aco_info_destroy(info);
return -1;
}
void aco_info_destroy(struct aco_info *info)
{
int x;
/* It shouldn't be possible for internal->pending to be in use when this is called because
* of the locks in loader.c around reloads and unloads and the fact that internal->pending
* only exists while those locks are held */
ast_free(info->internal);
info->internal = NULL;
for (x = 0; info->files[x]; x++) {
internal_file_types_destroy(info->files[x]);
}
}
int aco_set_defaults(struct aco_type *type, const char *category, void *obj)
{
struct aco_option *opt;
struct ao2_iterator iter;
if (!type->internal) {
return -1;
}
iter = ao2_iterator_init(type->internal->opts, 0);
while ((opt = ao2_iterator_next(&iter))) {
RAII_VAR(struct ast_variable *, var, NULL, ast_variables_destroy);
if (ast_strlen_zero(opt->default_val)) {
ao2_ref(opt, -1);
continue;
}
if (!(var = ast_variable_new(opt->name, opt->default_val, ""))) {
ao2_ref(opt, -1);
ao2_iterator_destroy(&iter);
return -1;
}
if (opt->handler(opt, var, obj)) {
ast_log(LOG_ERROR, "Unable to set default for %s, %s=%s\n", category, var->name, var->value);
ao2_ref(opt, -1);
ao2_iterator_destroy(&iter);
return -1;
}
ao2_ref(opt, -1);
}
ao2_iterator_destroy(&iter);
return 0;
}
#ifdef AST_XML_DOCS
/*! \internal
* \brief Complete the name of the module the user is looking for
*/
static char *complete_config_module(const char *word)
{
size_t wordlen = strlen(word);
struct ao2_iterator i;
struct ast_xml_doc_item *cur;
i = ao2_iterator_init(xmldocs, 0);
while ((cur = ao2_iterator_next(&i))) {
if (!strncasecmp(word, cur->name, wordlen)) {
if (ast_cli_completion_add(ast_strdup(cur->name))) {
ao2_ref(cur, -1);
break;
}
}
ao2_ref(cur, -1);
}
ao2_iterator_destroy(&i);
return NULL;
}
/*! \internal
* \brief Complete the name of the configuration type the user is looking for
*/
static char *complete_config_type(const char *module, const char *word)
{
size_t wordlen = strlen(word);
struct ast_xml_doc_item *info;
struct ast_xml_doc_item *cur;
info = ao2_find(xmldocs, module, OBJ_KEY);
if (!info) {
return NULL;
}
cur = info;
while ((cur = AST_LIST_NEXT(cur, next))) {
if (!strcasecmp(cur->type, "configObject") && !strncasecmp(word, cur->name, wordlen)) {
if (ast_cli_completion_add(ast_strdup(cur->name))) {
break;
}
}
}
ao2_ref(info, -1);
return NULL;
}
/*! \internal
* \brief Complete the name of the configuration option the user is looking for
*/
static char *complete_config_option(const char *module, const char *option, const char *word)
{
size_t wordlen = strlen(word);
struct ast_xml_doc_item *info;
struct ast_xml_doc_item *cur;
info = ao2_find(xmldocs, module, OBJ_KEY);
if (!info) {
return NULL;
}
cur = info;
while ((cur = AST_LIST_NEXT(cur, next))) {
if (!strcasecmp(cur->type, "configOption") && !strcasecmp(cur->ref, option) && !strncasecmp(word, cur->name, wordlen)) {
if (ast_cli_completion_add(ast_strdup(cur->name))) {
break;
}
}
}
ao2_ref(info, -1);
return NULL;
}
/*! \internal
* \brief Generate a category match string suitable for display in 'config show help'
*/
static struct ast_str *derive_category_text(enum aco_category_op category_match, const char *category)
{
struct ast_str *s = ast_str_create(128);
if (!s) {
return NULL;
}
switch (category_match) {
case ACO_WHITELIST_ARRAY:
case ACO_BLACKLIST_ARRAY: {
size_t i;
const char **matches = (const char **) category;
ast_str_append(&s, 0, "^(");
for (i = 0; matches[i]; i++) {
ast_str_append(&s, 0, "%s%s",
i ? "|" : "",
matches[i]);
}
ast_str_append(&s, 0, ")$");
break;
}
case ACO_WHITELIST_EXACT:
case ACO_BLACKLIST_EXACT:
ast_str_set(&s, 0, "^%s$", category);
break;
case ACO_WHITELIST:
case ACO_BLACKLIST:
default:
ast_str_set(&s, 0, "%s", category);
break;
}
return s;
}
/* Define as 0 if we want to allow configurations to be registered without
* documentation
*/
#define XMLDOC_STRICT 1
/*! \internal
* \brief Update the XML documentation for a config type based on its registration
*/
static int xmldoc_update_config_type(const char *module, const char *name, const char *category, const char *matchfield, const char *matchvalue, enum aco_category_op category_match)
{
RAII_VAR(struct ast_xml_xpath_results *, results, NULL, ast_xml_xpath_results_free);
RAII_VAR(struct ast_xml_doc_item *, config_info, ao2_find(xmldocs, module, OBJ_KEY), ao2_cleanup);
struct ast_xml_doc_item *config_type;
struct ast_xml_node *type, *syntax, *matchinfo, *tmp;
struct ast_str *derived_category = NULL;
/* If we already have a syntax element, bail. This isn't an error, since we may unload a module which
* has updated the docs and then load it again. */
if ((results = ast_xmldoc_query("/docs/configInfo[@name='%s']/configFile/configObject[@name='%s']/syntax", module, name))) {
return 0;
}
if (!(results = ast_xmldoc_query("/docs/configInfo[@name='%s']/configFile/configObject[@name='%s']", module, name))) {
ast_log(LOG_WARNING, "Cannot update type '%s' in module '%s' because it has no existing documentation!"
" If this module was recently built, run 'xmldoc reload' to refresh documentation, then load the module again\n",
name, module);
return XMLDOC_STRICT ? -1 : 0;
}
if (!(type = ast_xml_xpath_get_first_result(results))) {
ast_log(LOG_WARNING, "Could not retrieve documentation for type '%s' in module '%s'\n", name, module);
return XMLDOC_STRICT ? -1 : 0;
}
if (!(syntax = ast_xml_new_child(type, "syntax"))) {
ast_log(LOG_WARNING, "Could not create syntax node for type '%s' in module '%s'\n", name, module);
return XMLDOC_STRICT ? -1 : 0;
}
if (!(matchinfo = ast_xml_new_child(syntax, "matchInfo"))) {
ast_log(LOG_WARNING, "Could not create matchInfo node for type '%s' in module '%s'\n", name, module);
return XMLDOC_STRICT ? -1 : 0;
}
if (!(tmp = ast_xml_new_child(matchinfo, "category"))) {
ast_log(LOG_WARNING, "Could not create category node for type '%s' in module '%s'\n", name, module);
return XMLDOC_STRICT ? -1 : 0;
}
derived_category = derive_category_text(category_match, category);
if (derived_category) {
ast_xml_set_text(tmp, ast_str_buffer(derived_category));
ast_free(derived_category);
}
switch (category_match) {
case ACO_WHITELIST:
case ACO_WHITELIST_EXACT:
case ACO_WHITELIST_ARRAY:
ast_xml_set_attribute(tmp, "match", "true");
break;
case ACO_BLACKLIST:
case ACO_BLACKLIST_EXACT:
case ACO_BLACKLIST_ARRAY:
ast_xml_set_attribute(tmp, "match", "false");
break;
}
if (!ast_strlen_zero(matchfield)) {
if (!(tmp = ast_xml_new_child(matchinfo, "field"))) {
ast_log(LOG_WARNING, "Could not add %s attribute for type '%s' in module '%s'\n", matchfield, name, module);
return XMLDOC_STRICT ? -1 : 0;
}
ast_xml_set_attribute(tmp, "name", matchfield);
ast_xml_set_text(tmp, matchvalue);
}
if (!config_info || !(config_type = find_xmldoc_type(config_info, name))) {
ast_log(LOG_WARNING, "Could not obtain XML documentation item for config type %s\n", name);
return XMLDOC_STRICT ? -1 : 0;
}
if (ast_xmldoc_regenerate_doc_item(config_type)) {
ast_log(LOG_WARNING, "Could not update type '%s' with values from config type registration\n", name);
return XMLDOC_STRICT ? -1 : 0;
}
return 0;
}
/*! \internal
* \brief Update the XML documentation for a config option based on its registration
*/
static int xmldoc_update_config_option(struct aco_type **types, const char *module, const char *name, const char *object_name, const char *default_value, unsigned int regex, enum aco_option_type type)
{
RAII_VAR(struct ast_xml_xpath_results *, results, NULL, ast_xml_xpath_results_free);
RAII_VAR(struct ast_xml_doc_item *, config_info, ao2_find(xmldocs, module, OBJ_KEY), ao2_cleanup);
struct ast_xml_doc_item * config_option;
struct ast_xml_node *option;
ast_assert(ARRAY_LEN(aco_option_type_string) > type);
if (!config_info || !(config_option = find_xmldoc_option(config_info, types, name))) {
ast_log(LOG_ERROR, "XML Documentation for option '%s' in modules '%s' not found!\n", name, module);
return XMLDOC_STRICT ? -1 : 0;
}
if (!(results = ast_xmldoc_query("/docs/configInfo[@name='%s']/configFile/configObject[@name='%s']/configOption[@name='%s']", module, object_name, name))) {
ast_log(LOG_WARNING, "Could not find option '%s' with type '%s' in module '%s'\n", name, object_name, module);
return XMLDOC_STRICT ? -1 : 0;
}
if (!(option = ast_xml_xpath_get_first_result(results))) {
ast_log(LOG_WARNING, "Could not obtain results for option '%s' with type '%s' in module '%s'\n", name, object_name, module);
return XMLDOC_STRICT ? -1 : 0;
}
ast_xml_set_attribute(option, "regex", regex ? "true" : "false");
ast_xml_set_attribute(option, "default", default_value);
ast_xml_set_attribute(option, "type", aco_option_type_string[type]);
if (ast_xmldoc_regenerate_doc_item(config_option)) {
ast_log(LOG_WARNING, "Could not update option '%s' with values from config option registration\n", name);
return XMLDOC_STRICT ? -1 : 0;
}
return 0;
}
/*! \internal
* \brief Show the modules with configuration information
*/
static void cli_show_modules(struct ast_cli_args *a)
{
struct ast_xml_doc_item *item;
struct ao2_iterator it_items;
ast_assert(a->argc == 3);
if (ao2_container_count(xmldocs) == 0) {
ast_cli(a->fd, "No modules found.\n");
return;
}
it_items = ao2_iterator_init(xmldocs, 0);
ast_cli(a->fd, "The following modules have configuration information:\n");
while ((item = ao2_iterator_next(&it_items))) {
ast_cli(a->fd, "\t%s\n", item->name);
ao2_ref(item, -1);
}
ao2_iterator_destroy(&it_items);
}
/*! \internal
* \brief Show the configuration types for a module
*/
static void cli_show_module_types(struct ast_cli_args *a)
{
RAII_VAR(struct ast_xml_doc_item *, item, NULL, ao2_cleanup);
struct ast_xml_doc_item *tmp;
ast_assert(a->argc == 4);
if (!(item = ao2_find(xmldocs, a->argv[3], OBJ_KEY))) {
ast_cli(a->fd, "Module %s not found.\n", a->argv[3]);
return;
}
if (ast_str_strlen(item->synopsis)) {
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(ast_str_buffer(item->synopsis), 1));
}
if (ast_str_strlen(item->description)) {
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(ast_str_buffer(item->description), 1));
}
tmp = item;
ast_cli(a->fd, "Configuration option types for %s:\n", tmp->name);
while ((tmp = AST_LIST_NEXT(tmp, next))) {
if (!strcasecmp(tmp->type, "configObject")) {
ast_cli(a->fd, "%-25s -- %-65.65s\n", tmp->name,
ast_str_buffer(tmp->synopsis));
}
}
}
/*! \internal
* \brief Show the information for a configuration type
*/
static void cli_show_module_type(struct ast_cli_args *a)
{
RAII_VAR(struct ast_xml_doc_item *, item, NULL, ao2_cleanup);
struct ast_xml_doc_item *tmp;
char option_type[64];
int match = 0;
ast_assert(a->argc == 5);
if (!(item = ao2_find(xmldocs, a->argv[3], OBJ_KEY))) {
ast_cli(a->fd, "Unknown module %s\n", a->argv[3]);
return;
}
tmp = item;
while ((tmp = AST_LIST_NEXT(tmp, next))) {
if (!strcasecmp(tmp->type, "configObject") && !strcasecmp(tmp->name, a->argv[4])) {
match = 1;
term_color(option_type, tmp->name, COLOR_MAGENTA, COLOR_BLACK, sizeof(option_type));
ast_cli(a->fd, "%s", option_type);
if (ast_str_strlen(tmp->syntax)) {
ast_cli(a->fd, ": [%s]\n\n", ast_xmldoc_printable(ast_str_buffer(tmp->syntax), 1));
} else {
ast_cli(a->fd, "\n\n");
}
if (ast_str_strlen(tmp->synopsis)) {
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(ast_str_buffer(tmp->synopsis), 1));
}
if (ast_str_strlen(tmp->description)) {
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(ast_str_buffer(tmp->description), 1));
}
}
}
if (!match) {
ast_cli(a->fd, "Unknown configuration type %s\n", a->argv[4]);
return;
}
/* Now iterate over the options for the type */
tmp = item;
while ((tmp = AST_LIST_NEXT(tmp, next))) {
if (!strcasecmp(tmp->type, "configOption") && !strcasecmp(tmp->ref, a->argv[4])) {
ast_cli(a->fd, "%-25s -- %-120.120s\n", tmp->name,
ast_str_buffer(tmp->synopsis));
}
}
}
/*! \internal
* \brief Show detailed information for an option
*/
static void cli_show_module_options(struct ast_cli_args *a)
{
RAII_VAR(struct ast_xml_doc_item *, item, NULL, ao2_cleanup);
struct ast_xml_doc_item *tmp;
char option_name[64];
int match = 0;
ast_assert(a->argc == 6);
if (!(item = ao2_find(xmldocs, a->argv[3], OBJ_KEY))) {
ast_cli(a->fd, "Unknown module %s\n", a->argv[3]);
return;
}
tmp = item;
while ((tmp = AST_LIST_NEXT(tmp, next))) {
if (!strcasecmp(tmp->type, "configOption") && !strcasecmp(tmp->ref, a->argv[4]) && !strcasecmp(tmp->name, a->argv[5])) {
if (match) {
ast_cli(a->fd, "\n");
}
term_color(option_name, tmp->ref, COLOR_MAGENTA, COLOR_BLACK, sizeof(option_name));
ast_cli(a->fd, "[%s%s]\n", option_name, ast_term_reset());
if (ast_str_strlen(tmp->syntax)) {
ast_cli(a->fd, "%s\n", ast_xmldoc_printable(ast_str_buffer(tmp->syntax), 1));
}
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(AS_OR(tmp->synopsis, "No information available"), 1));
if (ast_str_strlen(tmp->description)) {
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(ast_str_buffer(tmp->description), 1));
}
if (ast_str_strlen(tmp->seealso)) {
ast_cli(a->fd, "See Also:\n");
ast_cli(a->fd, "%s\n\n", ast_xmldoc_printable(ast_str_buffer(tmp->seealso), 1));
}
match = 1;
}
}
if (!match) {
ast_cli(a->fd, "No option %s found for %s:%s\n", a->argv[5], a->argv[3], a->argv[4]);
}
}
static char *cli_show_help(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
switch (cmd) {
case CLI_INIT:
e->command = "config show help";
e->usage =
"Usage: config show help [<module> [<type> [<option>]]]\n"
" Display detailed information about module configuration.\n"
" * If nothing is specified, the modules that have\n"
" configuration information are listed.\n"
" * If <module> is specified, the configuration types\n"
" for that module will be listed, along with brief\n"
" information about that type.\n"
" * If <module> and <type> are specified, detailed\n"
" information about the type is displayed, as well\n"
" as the available options.\n"
" * If <module>, <type>, and <option> are specified,\n"
" detailed information will be displayed about that\n"
" option.\n"
" NOTE: the help documentation is partially generated at run\n"
" time when a module is loaded. If a module is not loaded,\n"
" configuration help for that module may be incomplete.\n";
return NULL;
case CLI_GENERATE:
switch(a->pos) {
case 3:
return complete_config_module(a->word);
case 4:
return complete_config_type(a->argv[3], a->word);
case 5:
return complete_config_option(a->argv[3], a->argv[4], a->word);
default:
return NULL;
}
}
switch (a->argc) {
case 3:
cli_show_modules(a);
break;
case 4:
cli_show_module_types(a);
break;
case 5:
cli_show_module_type(a);
break;
case 6:
cli_show_module_options(a);
break;
default:
return CLI_SHOWUSAGE;
}
return CLI_SUCCESS;
}
static struct ast_cli_entry cli_aco[] = {
AST_CLI_DEFINE(cli_show_help, "Show configuration help for a module"),
};
static void aco_deinit(void)
{
ast_cli_unregister(cli_aco);
ao2_cleanup(xmldocs);
}
#endif /* AST_XML_DOCS */
int aco_init(void)
{
#ifdef AST_XML_DOCS
ast_register_cleanup(aco_deinit);
if (!(xmldocs = ast_xmldoc_build_documentation("configInfo"))) {
ast_log(LOG_ERROR, "Couldn't build config documentation\n");
return -1;
}
ast_cli_register_multiple(cli_aco, ARRAY_LEN(cli_aco));
#endif /* AST_XML_DOCS */
return 0;
}
/* Default config option handlers */
/*! \brief Default option handler for signed integers
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int int_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj) {
int *field = (int *)(obj + opt->args[0]);
unsigned int flags = PARSE_INT32 | opt->flags;
int res = 0;
if (opt->flags & PARSE_IN_RANGE) {
res = opt->flags & PARSE_DEFAULT ?
ast_parse_arg(var->value, flags, field, (int) opt->args[1], (int) opt->args[2], opt->args[3]) :
ast_parse_arg(var->value, flags, field, (int) opt->args[1], (int) opt->args[2]);
if (res) {
if (opt->flags & PARSE_RANGE_DEFAULTS) {
ast_log(LOG_WARNING, "Failed to set %s=%s. Set to %d instead due to range limit (%d, %d)\n", var->name, var->value, *field, (int) opt->args[1], (int) opt->args[2]);
res = 0;
} else if (opt->flags & PARSE_DEFAULT) {
ast_log(LOG_WARNING, "Failed to set %s=%s, Set to default value %d instead.\n", var->name, var->value, *field);
res = 0;
}
}
} else if ((opt->flags & PARSE_DEFAULT) && ast_parse_arg(var->value, flags, field, (int) opt->args[1])) {
ast_log(LOG_WARNING, "Attempted to set %s=%s, but set it to %d instead due to default)\n", var->name, var->value, *field);
} else {
res = ast_parse_arg(var->value, flags, field);
}
return res;
}
/*! \brief Default option handler for unsigned integers
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int uint_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj) {
unsigned int *field = (unsigned int *)(obj + opt->args[0]);
unsigned int flags = PARSE_UINT32 | opt->flags;
int res = 0;
if (opt->flags & PARSE_IN_RANGE) {
res = opt->flags & PARSE_DEFAULT ?
ast_parse_arg(var->value, flags, field, (unsigned int) opt->args[1], (unsigned int) opt->args[2], opt->args[3]) :
ast_parse_arg(var->value, flags, field, (unsigned int) opt->args[1], (unsigned int) opt->args[2]);
if (res) {
if (opt->flags & PARSE_RANGE_DEFAULTS) {
ast_log(LOG_WARNING, "Failed to set %s=%s. Set to %u instead due to range limit (%d, %d)\n", var->name, var->value, *field, (int) opt->args[1], (int) opt->args[2]);
res = 0;
} else if (opt->flags & PARSE_DEFAULT) {
ast_log(LOG_WARNING, "Failed to set %s=%s, Set to default value %u instead.\n", var->name, var->value, *field);
res = 0;
}
}
} else if ((opt->flags & PARSE_DEFAULT) && ast_parse_arg(var->value, flags, field, (unsigned int) opt->args[1])) {
ast_log(LOG_WARNING, "Attempted to set %s=%s, but set it to %u instead due to default)\n", var->name, var->value, *field);
} else {
res = ast_parse_arg(var->value, flags, field);
}
return res;
}
/*! \brief Default option handler for timelen signed integers
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int timelen_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
int *field = (int *)(obj + opt->args[0]);
unsigned int flags = PARSE_TIMELEN | opt->flags;
int res = 0;
if (opt->flags & PARSE_IN_RANGE) {
if (opt->flags & PARSE_DEFAULT) {
res = ast_parse_arg(var->value, flags, field, (enum ast_timelen) opt->args[1], (int) opt->args[2], (int) opt->args[3], opt->args[4]);
} else {
res = ast_parse_arg(var->value, flags, field, (enum ast_timelen) opt->args[1], (int) opt->args[2], (int) opt->args[3]);
}
if (res) {
if (opt->flags & PARSE_RANGE_DEFAULTS) {
ast_log(LOG_WARNING, "Failed to set %s=%s. Set to %d instead due to range limit (%d, %d)\n", var->name, var->value, *field, (int) opt->args[2], (int) opt->args[3]);
res = 0;
} else if (opt->flags & PARSE_DEFAULT) {
ast_log(LOG_WARNING, "Failed to set %s=%s, Set to default value %d instead.\n", var->name, var->value, *field);
res = 0;
}
}
} else if ((opt->flags & PARSE_DEFAULT) && ast_parse_arg(var->value, flags, field, (enum ast_timelen) opt->args[1], (int) opt->args[2])) {
ast_log(LOG_WARNING, "Attempted to set %s=%s, but set it to %d instead due to default)\n", var->name, var->value, *field);
} else {
res = ast_parse_arg(var->value, flags, field, (enum ast_timelen) opt->args[1]);
}
return res;
}
/*! \brief Default option handler for doubles
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int double_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj) {
double *field = (double *)(obj + opt->args[0]);
return ast_parse_arg(var->value, PARSE_DOUBLE | opt->flags, field);
}
/*! \brief Default handler for ACLs
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int acl_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj) {
struct ast_ha **ha = (struct ast_ha **)(obj + opt->args[0]);
int error = 0;
*ha = ast_append_ha(opt->flags ? "permit" : "deny", var->value, *ha, &error);
return error;
}
/*! \brief Default option handler for codec preferences/capabilities
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int codec_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj) {
struct ast_format_cap **cap = (struct ast_format_cap **)(obj + opt->args[0]);
return ast_format_cap_update_by_allow_disallow(*cap, var->value, opt->flags);
}
/*! \brief Default option handler for stringfields
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int stringfield_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
ast_string_field *field = (const char **)(obj + opt->args[0]);
struct ast_string_field_pool **pool = (struct ast_string_field_pool **)(obj + opt->args[1]);
struct ast_string_field_mgr *mgr = (struct ast_string_field_mgr *)(obj + opt->args[2]);
if (opt->flags && ast_strlen_zero(var->value)) {
return -1;
}
ast_string_field_ptr_set_by_fields(*pool, *mgr, field, var->value);
return 0;
}
/*! \brief Default option handler for bools (ast_true/ast_false)
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int bool_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
unsigned int *field = (unsigned int *)(obj + opt->args[0]);
*field = opt->flags ? ast_true(var->value) : ast_false(var->value);
return 0;
}
/*! \brief Default option handler for bools (ast_true/ast_false) that are stored as flags
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int boolflag_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
unsigned int *flags_field = (unsigned int *)(obj + opt->args[0]);
unsigned int val = opt->flags ? ast_true(var->value) : ast_false(var->value);
unsigned int flag = opt->args[1];
if (val) {
*flags_field |= flag;
} else {
*flags_field &= ~flag;
}
return 0;
}
/*! \brief Default handler for ast_sockaddrs
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int sockaddr_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
struct ast_sockaddr *field = (struct ast_sockaddr *)(obj + opt->args[0]);
return ast_parse_arg(var->value, PARSE_ADDR | opt->flags, field);
}
/*! \brief Default handler for doing nothing
*/
static int noop_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
return 0;
}
/*! \brief Default handler for character arrays
* \note For a description of the opt->flags and opt->args values, see the documentation for
* enum aco_option_type in config_options.h
*/
static int chararray_handler_fn(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
char *field = (char *)(obj + opt->args[0]);
size_t len = opt->args[1];
if (opt->flags && ast_strlen_zero(var->value)) {
return -1;
}
ast_copy_string(field, var->value, len);
return 0;
}
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