res_phoneprov: Refactor phoneprov to allow pluggable config providers

This patch makes res_phoneprov more modular so other modules (like pjsip)
can provide configuration information instead of res_phoneprov relying solely
on users.conf and sip.conf.  To accomplish this a new ast_phoneprov public API
is now exposed which allows config providers to register themselves, set
defaults (server profile, etc) and add user extensions.

* ast_phoneprov_provider_register registers the provider and provides callbacks
  for loading default settings and loading users.
* ast_phoneprov_provider_unregister clears the defaults and users.
* ast_phoneprov_add_extension should be called once for each user/extension
  by the provider's load_users callback to add them.
* ast_phoneprov_delete_extension deletes one extension.
* ast_phoneprov_delete_extensions deletes all extensions for the provider.

Tested-by: George Joseph
Review: https://reviewboard.asterisk.org/r/3970/
........

Merged revisions 424963 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@424964 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 18 insertions, 0 deletions

diff --git a/include/asterisk/chanvars.h b/include/asterisk/chanvars.h
index 7ebc64a9d..3693e2a3a 100644
--- a/include/asterisk/chanvars.h
+++ b/include/asterisk/chanvars.h
@@ -33,6 +33,8 @@ struct ast_var_t {
 
 AST_LIST_HEAD_NOLOCK(varshead, ast_var_t);
 
+struct varshead *ast_var_list_create(void);
+void ast_var_list_destroy(struct varshead *head);
 #ifdef MALLOC_DEBUG
 struct ast_var_t *_ast_var_assign(const char *name, const char *value, const char *file, int lineno, const char *function);
 #define ast_var_assign(a,b)	_ast_var_assign(a,b,__FILE__,__LINE__,__PRETTY_FUNCTION__)
@@ -43,5 +45,21 @@ void ast_var_delete(struct ast_var_t *var);
 const char *ast_var_name(const struct ast_var_t *var);
 const char *ast_var_full_name(const struct ast_var_t *var);
 const char *ast_var_value(const struct ast_var_t *var);
+char *ast_var_find(const struct varshead *head, const char *name);
+struct varshead *ast_var_list_clone(struct varshead *head);
+
+#define AST_VAR_LIST_TRAVERSE(head, var) AST_LIST_TRAVERSE(head, var, entries)
+
+static inline void AST_VAR_LIST_INSERT_TAIL(struct varshead *head, struct ast_var_t *var) {
+	if (var) {
+		AST_LIST_INSERT_TAIL(head, var, entries);
+	}
+}
+
+static inline void AST_VAR_LIST_INSERT_HEAD(struct varshead *head, struct ast_var_t *var) {
+	if (var) {
+		AST_LIST_INSERT_HEAD(head, var, entries);
+	}
+}
 
 #endif /* _ASTERISK_CHANVARS_H */