chanvars.c File Reference

Channel Variables. More...

#include "asterisk.h"
#include "asterisk/chanvars.h"
#include "asterisk/strings.h"
#include "asterisk/utils.h"

Include dependency graph for chanvars.c:

Go to the source code of this file.

Functions
struct ast_var_t *	_ast_var_assign (const char *name, const char *value, const char *file, int lineno, const char *function)
void	ast_var_delete (struct ast_var_t *var)
char *	ast_var_find (const struct varshead *head, const char *name)
const char *	ast_var_full_name (const struct ast_var_t *var)
struct varshead *	ast_var_list_clone (struct varshead *head)
struct varshead *	ast_var_list_create (void)
void	ast_var_list_destroy (struct varshead *head)
const char *	ast_var_name (const struct ast_var_t *var)
const char *	ast_var_value (const struct ast_var_t *var)

Detailed Description

Channel Variables.

Author

Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Definition in file chanvars.c.

Function Documentation

_ast_var_assign()

struct ast_var_t* _ast_var_assign	(	const char *	name,
		const char *	value,
		const char *	file,
		int	lineno,
		const char *	function
	)

Definition at line 36 of file chanvars.c.

References __ast_calloc(), ast_copy_string(), ast_var_t::name, NULL, ast_var_t::value, and var.

{
   struct ast_var_t *var;
   int name_len = strlen(name) + 1;
   int value_len = strlen(value) + 1;

   var = __ast_calloc(sizeof(*var) + name_len + value_len, sizeof(char),
      file, lineno, function);
   if (!var) {
      return NULL;
   }

   ast_copy_string(var->name, name, name_len);
   var->value = var->name + name_len;
   ast_copy_string(var->value, value, value_len);

   return var;
}

ast_var_delete()

void ast_var_delete

(

struct ast_var_t *

var

)

Definition at line 55 of file chanvars.c.

References ast_free.

Referenced by acf_iaxvar_write(), ast_cdr_reset(), ast_channel_destructor(), ast_dummy_channel_destructor(), AST_TEST_DEFINE(), ast_var_list_destroy(), cdr_object_dtor(), chan_cleanup(), do_say(), dundi_lookup_local(), free_variables(), gosub_release_frame(), loopback_subst(), pbx_builtin_clear_globals(), pbx_builtin_setvar_helper(), profile_destructor(), set_variable(), shared_variable_free(), shared_write(), sip_removeheader(), and varshead_dtor().

{
   ast_free(var);
}

ast_var_find()

char* ast_var_find	(	const struct varshead *	head,
		const char *	name
	)

Definition at line 85 of file chanvars.c.

References AST_LIST_TRAVERSE, ast_var_t::entries, ast_var_t::name, NULL, ast_var_t::value, and var.

Referenced by phoneprov_destroy(), and users_apply_handler().

{
   struct ast_var_t *var;

   AST_LIST_TRAVERSE(head, var, entries) {
      if (!strcmp(name, var->name)) {
         return var->value;
      }
   }
   return NULL;
}

ast_var_full_name()

const char* ast_var_full_name

(

const struct ast_var_t *

var

)

Definition at line 75 of file chanvars.c.

References ast_var_t::name, and NULL.

Referenced by ast_channel_inherit_variables(), ast_unreal_call_setup(), and inherit_channel_vars_from_id().

{
   return (var ? var->name : NULL);
}

ast_var_list_clone()

struct varshead* ast_var_list_clone

(

struct varshead *

head

)

Definition at line 124 of file chanvars.c.

References ast_var_assign, ast_var_list_create(), ast_var_list_destroy(), AST_VAR_LIST_INSERT_TAIL(), AST_VAR_LIST_TRAVERSE, ast_var_t::name, NULL, ast_var_t::value, and var.

{
   struct varshead *clone;
   struct ast_var_t *var, *newvar;

   if (!head) {
      return NULL;
   }

   clone = ast_var_list_create();
   if (!clone) {
      return NULL;
   }

   AST_VAR_LIST_TRAVERSE(head, var) {
      newvar = ast_var_assign(var->name, var->value);
      if (!newvar) {
         ast_var_list_destroy(clone);
         return NULL;
      }
      AST_VAR_LIST_INSERT_TAIL(clone, newvar);
   }

   return clone;
}

ast_var_list_create()

struct varshead* ast_var_list_create

(

void

)

Definition at line 97 of file chanvars.c.

References ast_calloc, AST_LIST_HEAD_INIT_NOLOCK, and NULL.

Referenced by ast_var_list_clone(), build_profile(), get_defaults(), handle_aor(), handle_registrations(), and phoneprov_alloc().

{
   struct varshead *head;

   head = ast_calloc(1, sizeof(*head));
   if (!head) {
      return NULL;
   }
   AST_LIST_HEAD_INIT_NOLOCK(head);
   return head;
}

ast_var_list_destroy()

void ast_var_list_destroy

(

struct varshead *

head

)

Definition at line 109 of file chanvars.c.

References ast_free, AST_LIST_REMOVE_HEAD, ast_var_delete(), ast_var_t::entries, and var.

Referenced by ast_var_list_clone(), get_defaults(), handle_aor(), handle_registrations(), and phoneprov_destroy().

{
   struct ast_var_t *var;

   if (!head) {
      return;
   }

   while ((var = AST_LIST_REMOVE_HEAD(head, entries))) {
      ast_var_delete(var);
   }

   ast_free(head);
}

ast_var_name()

const char* ast_var_name

(

const struct ast_var_t *

var

)

Definition at line 60 of file chanvars.c.

References ast_var_t::name, name, and NULL.

Referenced by ast_cdr_serialize_variables(), ast_channel_get_vars(), ast_str_retrieve_variable(), cdr_format_var_internal(), cdr_object_create_public_records(), cdr_object_format_var_internal(), clearvar_prefix(), copy_variables(), frame_set_var(), generate_status(), get_key(), gosub_release_frame(), handle_show_chanvar(), handle_show_globals(), handle_showchan(), iax2_call(), iax2_dup_variable_datastore(), local_read(), ospauth_exec(), ospfinished_exec(), osplookup_exec(), ospnext_exec(), pbx_builtin_getvar_helper(), pbx_builtin_serialize_variables(), pbx_builtin_setvar_helper(), peek_read(), set_variable(), shared_read(), shared_write(), sip_call(), sip_removeheader(), skinny_call(), and transmit_invite().

{
   const char *name;

   if (var == NULL || (name = var->name) == NULL)
      return NULL;
   /* Return the name without the initial underscores */
   if (name[0] == '_') {
      name++;
      if (name[0] == '_')
         name++;
   }
   return name;
}

ast_var_value()

const char* ast_var_value

(

const struct ast_var_t *

var

)

Definition at line 80 of file chanvars.c.

References NULL, and ast_var_t::value.

Referenced by ast_cdr_serialize_variables(), ast_channel_get_vars(), ast_channel_inherit_variables(), ast_str_retrieve_variable(), ast_unreal_call_setup(), cdr_format_var_internal(), cdr_object_create_public_records(), cdr_object_format_var_internal(), copy_variables(), generate_status(), handle_show_chanvar(), handle_show_globals(), handle_showchan(), iax2_call(), iax2_dup_variable_datastore(), inherit_channel_vars_from_id(), ospauth_exec(), ospfinished_exec(), osplookup_exec(), ospnext_exec(), pbx_builtin_getvar_helper(), pbx_builtin_serialize_variables(), pbx_builtin_setvar_helper(), peek_read(), shared_read(), sip_call(), sip_removeheader(), skinny_call(), and transmit_invite().

{
   return (var ? var->value : NULL);
}