parking_devicestate.c File Reference

Call Parking Device State Management. More...

#include "asterisk.h"
#include "asterisk/logger.h"
#include "res_parking.h"
#include "asterisk/devicestate.h"

Include dependency graph for parking_devicestate.c:

Go to the source code of this file.

Data Structures
struct	parking_lot_extension_inuse_search

Functions
int	load_parking_devstate (void)
	Register Parking devstate handler. More...
static enum ast_device_state	metermaidstate (const char *data)
static int	parking_lot_search_context_extension_inuse (void *obj, void *arg, int flags)
void	parking_notify_metermaids (int exten, const char *context, enum ast_device_state state)
	Notify metermaids that we've changed an extension. More...
static int	retrieve_parked_user_targeted (void *obj, void *arg, int flags)
void	unload_parking_devstate (void)
	Unregister Parking devstate handler. More...

Detailed Description

Call Parking Device State Management.

Author

Jonathan Rose jrose.nosp@m.@dig.nosp@m.ium.c.nosp@m.om

Definition in file parking_devicestate.c.

Function Documentation

load_parking_devstate()

int load_parking_devstate

(

void

)

Register Parking devstate handler.

Since

12.0.0

Definition at line 121 of file parking_devicestate.c.

References ast_devstate_prov_add(), and metermaidstate().

Referenced by load_module().

{
   return ast_devstate_prov_add("Park", metermaidstate);
}

metermaidstate()

static enum ast_device_state metermaidstate ( const char *  data )

static

Definition at line 77 of file parking_devicestate.c.

References ao2_callback, ao2_cleanup, ast_debug, AST_DEVICE_INUSE, AST_DEVICE_INVALID, AST_DEVICE_NOT_INUSE, ast_strdupa, ast_strlen_zero, parking_lot_extension_inuse_search::context, parking_lot_extension_inuse_search::exten, get_parking_lot_container(), NULL, parking_lot_search_context_extension_inuse(), RAII_VAR, and strsep().

Referenced by load_parking_devstate().

{
   struct ao2_container *global_lots = get_parking_lot_container();
   RAII_VAR(struct parking_lot *, lot, NULL, ao2_cleanup);
   char *context;
   char *exten;
   struct parking_lot_extension_inuse_search search = {};

   context = ast_strdupa(data);

   exten = strsep(&context, "@");

   if (ast_strlen_zero(context) || ast_strlen_zero(exten)) {
      return AST_DEVICE_INVALID;
   }

   search.context = context;
   if (sscanf(exten, "%d", &search.exten) != 1) {
      return AST_DEVICE_INVALID;
   }

   ast_debug(4, "Checking state of exten %d in context %s\n", search.exten, context);

   lot = ao2_callback(global_lots, 0, parking_lot_search_context_extension_inuse, &data);
   if (!lot) {
      return AST_DEVICE_NOT_INUSE;
   }

   return AST_DEVICE_INUSE;
}

parking_lot_search_context_extension_inuse()

static int parking_lot_search_context_extension_inuse ( void *  obj, void *  arg, int  flags  )

static

Definition at line 47 of file parking_devicestate.c.

References ao2_callback, ao2_cleanup, ao2_lock, ao2_unlock, parking_lot::cfg, CMP_MATCH, parking_lot_extension_inuse_search::context, parking_lot_extension_inuse_search::exten, NULL, PARK_UNSET, parking_lot::parked_users, parking_lot_cfg::parking_con, parking_lot_cfg::parking_start, parking_lot_cfg::parking_stop, RAII_VAR, and retrieve_parked_user_targeted().

Referenced by metermaidstate().

{
   struct parking_lot *lot = obj;
   struct parking_lot_extension_inuse_search *search = arg;
   RAII_VAR(struct parked_user *, user, NULL, ao2_cleanup);

   if (strcmp(lot->cfg->parking_con, search->context)) {
      return 0;
   }

   if ((search->exten < lot->cfg->parking_start) || (search->exten > lot->cfg->parking_stop)) {
      return 0;
   }

   user = ao2_callback(lot->parked_users, 0, retrieve_parked_user_targeted, &search->exten);
   if (!user) {
      return 0;
   }

   ao2_lock(user);
   if (user->resolution != PARK_UNSET) {
      /* The parked user isn't in an answerable state. */
      ao2_unlock(user);
      return 0;
   }
   ao2_unlock(user);

   return CMP_MATCH;
}

parking_notify_metermaids()

void parking_notify_metermaids	(	int	exten,
		const char *	context,
		enum ast_device_state	state
	)

Notify metermaids that we've changed an extension.

Since

12.0.0

Parameters

exten	Extension of the call parked/unparked
context	Context of the call parked/unparked
state	new device state

Definition at line 108 of file parking_devicestate.c.

References ast_debug, ast_devstate2str(), AST_DEVSTATE_CACHABLE, and ast_devstate_changed().

Referenced by bridge_parking_pull(), and bridge_parking_push().

{
   ast_debug(4, "Notification of state change to metermaids %d@%s\n to state '%s'\n",
      exten, context, ast_devstate2str(state));

   ast_devstate_changed(state, AST_DEVSTATE_CACHABLE, "park:%d@%s", exten, context);
}

retrieve_parked_user_targeted()

static int retrieve_parked_user_targeted ( void *  obj, void *  arg, int  flags  )

static

Definition at line 36 of file parking_devicestate.c.

References CMP_MATCH, and parked_user::parking_space.

Referenced by parking_lot_search_context_extension_inuse().

{
   int *target = arg;
   struct parked_user *user = obj;
   if (user->parking_space == *target) {
      return CMP_MATCH;
   }

   return 0;
}

unload_parking_devstate()

void unload_parking_devstate

(

void

)

Unregister Parking devstate handler.

Since

12.0.0

Definition at line 116 of file parking_devicestate.c.

References ast_devstate_prov_del().

Referenced by unload_module().

{
   ast_devstate_prov_del("Park");
}