474 lines
12 KiB
C
474 lines
12 KiB
C
/*
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* Copyright (C) 2007-2015 various contributors (see AUTHORS)
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*
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* This file is part of Python-EFL.
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*
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* Python-EFL is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* Python-EFL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this Python-EFL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdbool.h>
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#include "e_dbus.h"
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#ifndef E_DBUS_COLOR_DEFAULT
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#define E_DBUS_COLOR_DEFAULT EINA_COLOR_CYAN
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#endif
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static int _e_dbus_log_dom = -1;
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#define DBG(...) EINA_LOG_DOM_DBG(_e_dbus_log_dom, __VA_ARGS__)
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#define INFO(...) EINA_LOG_DOM_INFO(_e_dbus_log_dom, __VA_ARGS__)
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#define WARN(...) EINA_LOG_DOM_WARN(_e_dbus_log_dom, __VA_ARGS__)
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#define ERR(...) EINA_LOG_DOM_ERR(_e_dbus_log_dom, __VA_ARGS__)
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static int connection_slot = -1;
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static int e_dbus_idler_active = 0;
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static int close_connection = 0;
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static int _edbus_init_count = 0;
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// change this define for extra debug
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// #define DDBG(...) printf(__VA_ARGS__); printf("\n");
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#define DDBG(...)
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static Eina_Bool
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e_dbus_idler(void *data)
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{
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E_DBus_Connection *cd;
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cd = data;
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if (DBUS_DISPATCH_COMPLETE == dbus_connection_get_dispatch_status(cd->conn))
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{
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DBG("done dispatching!");
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cd->idler = NULL;
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return ECORE_CALLBACK_CANCEL;
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}
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e_dbus_idler_active++;
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dbus_connection_ref(cd->conn);
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DBG("dispatch()");
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dbus_connection_dispatch(cd->conn);
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dbus_connection_unref(cd->conn);
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e_dbus_idler_active--;
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if (!e_dbus_idler_active && close_connection)
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{
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do
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{
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e_dbus_connection_close(cd);
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} while (--close_connection);
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}
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return ECORE_CALLBACK_RENEW;
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}
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static void
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cb_dispatch_status(DBusConnection *conn, DBusDispatchStatus new_status, void *data)
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{
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E_DBus_Connection *cd;
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DBG("dispatch status: %d!", new_status);
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cd = data;
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if (new_status == DBUS_DISPATCH_DATA_REMAINS && !cd->idler)
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cd->idler = ecore_idler_add(e_dbus_idler, cd);
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else if (new_status != DBUS_DISPATCH_DATA_REMAINS && cd->idler)
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{
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ecore_idler_del(cd->idler);
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cd->idler = NULL;
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}
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}
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/* ecore fd handler */
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static Eina_Bool
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e_dbus_fd_handler(void *data, Ecore_Fd_Handler *fd_handler)
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{
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E_DBus_Handler_Data *hd = data;
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unsigned int condition = 0;
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DDBG("DATA READY ON FD");
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if (ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_READ))
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condition |= DBUS_WATCH_READABLE;
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if (ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_WRITE))
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condition |= DBUS_WATCH_WRITABLE;
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if (ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_ERROR))
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condition |= DBUS_WATCH_ERROR;
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if (hd->watch_read && dbus_watch_get_enabled(hd->watch_read))
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dbus_watch_handle(hd->watch_read, condition);
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if (hd->watch_read != hd->watch_write &&
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hd->watch_write && dbus_watch_get_enabled(hd->watch_write))
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dbus_watch_handle(hd->watch_write, condition);
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return ECORE_CALLBACK_RENEW;
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}
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static void
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e_dbus_fd_handler_update(E_DBus_Handler_Data *hd)
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{
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Ecore_Fd_Handler_Flags eflags = ECORE_FD_ERROR;
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if (hd->watch_read && dbus_watch_get_enabled(hd->watch_read))
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eflags |= ECORE_FD_READ;
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if (hd->watch_write && dbus_watch_get_enabled(hd->watch_write))
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eflags |= ECORE_FD_WRITE;
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DDBG("FD update %d (flags: %d)", hd->fd, eflags)
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ecore_main_fd_handler_active_set(hd->fd_handler, eflags);
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}
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static void
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e_dbus_fd_handler_add(E_DBus_Connection *cd, DBusWatch *watch)
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{
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E_DBus_Handler_Data *hd = NULL, *hd2;
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Eina_List *l;
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int dflags;
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int fd;
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fd = dbus_watch_get_unix_fd(watch);
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dflags = dbus_watch_get_flags(watch);
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EINA_LIST_FOREACH(cd->fd_handlers, l, hd2)
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{
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if (hd2->fd == fd)
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{
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hd = hd2;
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break;
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}
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}
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if (!hd)
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{
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hd = calloc(1, sizeof(E_DBus_Handler_Data));
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if (!hd) return;
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hd->cd = cd;
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hd->fd = fd;
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hd->fd_handler = ecore_main_fd_handler_add(fd, ECORE_FD_ERROR,
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e_dbus_fd_handler,
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hd, NULL, NULL);
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if (!hd->fd_handler) { DDBG("ERROR! cannot create FD handler") }
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cd->fd_handlers = eina_list_append(cd->fd_handlers, hd);
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}
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if (dflags & DBUS_WATCH_READABLE) hd->watch_read = watch;
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if (dflags & DBUS_WATCH_WRITABLE) hd->watch_write = watch;
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dbus_watch_set_data(watch, hd, NULL);
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e_dbus_fd_handler_update(hd);
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}
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static void
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e_dbus_fd_handler_del(E_DBus_Handler_Data *hd)
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{
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DDBG(" FD handler del");
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hd->cd->fd_handlers = eina_list_remove(hd->cd->fd_handlers, hd);
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ecore_main_fd_handler_del(hd->fd_handler);
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free(hd);
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}
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/* watch */
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static dbus_bool_t
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cb_watch_add(DBusWatch *watch, void *data)
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{
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E_DBus_Connection *cd = data;
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DDBG("Watch add on fd: %d (flags: %d) enable: %d",
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dbus_watch_get_unix_fd(watch), dbus_watch_get_flags(watch),
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dbus_watch_get_enabled(watch));
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e_dbus_fd_handler_add(cd, watch);
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return true;
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}
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static void
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cb_watch_del(DBusWatch *watch, void *data)
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{
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E_DBus_Handler_Data *hd;
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DDBG("Watch del on fd: %d (flags: %d)", dbus_watch_get_unix_fd(watch),
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dbus_watch_get_flags(watch));
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hd = dbus_watch_get_data(watch);
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int dflags = dbus_watch_get_flags(watch);
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if (dflags & DBUS_WATCH_READABLE) hd->watch_read = NULL;
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if (dflags & DBUS_WATCH_WRITABLE) hd->watch_write = NULL;
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if (!hd->watch_read && !hd->watch_write)
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e_dbus_fd_handler_del(hd);
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else
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e_dbus_fd_handler_update(hd);
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}
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static void
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cb_watch_toggle(DBusWatch *watch, void *data)
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{
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E_DBus_Handler_Data *hd;
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DDBG("Watch toggle on fd: %d (flags: %d) enable: %d",
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dbus_watch_get_unix_fd(watch), dbus_watch_get_flags(watch),
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dbus_watch_get_enabled(watch));
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hd = dbus_watch_get_data(watch);
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e_dbus_fd_handler_update(hd);
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}
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/* timeout */
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static Eina_Bool
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e_dbus_timeout_handler(void *data)
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{
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E_DBus_Timeout_Data *td;
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td = data;
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if (!dbus_timeout_get_enabled(td->timeout))
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{
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DBG("timeout_handler (not enabled, ending)");
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td->handler = NULL;
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return ECORE_CALLBACK_CANCEL;
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}
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DBG("timeout handler!");
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dbus_timeout_handle(td->timeout);
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return ECORE_CALLBACK_CANCEL;
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}
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static void
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e_dbus_timeout_data_free(void *timeout_data)
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{
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E_DBus_Timeout_Data *td = timeout_data;
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DBG("e_dbus_timeout_data_free");
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if (td->handler) ecore_timer_del(td->handler);
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free(td);
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}
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static dbus_bool_t
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cb_timeout_add(DBusTimeout *timeout, void *data)
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{
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E_DBus_Connection *cd;
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E_DBus_Timeout_Data *td;
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cd = data;
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DBG("timeout add!");
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td = calloc(1, sizeof(E_DBus_Timeout_Data));
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td->cd = cd;
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dbus_timeout_set_data(timeout, (void *)td, e_dbus_timeout_data_free);
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td->interval = dbus_timeout_get_interval(timeout);
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td->timeout = timeout;
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if (dbus_timeout_get_enabled(timeout))
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td->handler = ecore_timer_add(td->interval, e_dbus_timeout_handler, td);
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td->cd->timeouts = eina_list_append(td->cd->timeouts, td->handler);
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return true;
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}
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static void
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cb_timeout_del(DBusTimeout *timeout, void *data)
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{
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E_DBus_Timeout_Data *td;
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DBG("timeout del!");
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td = (E_DBus_Timeout_Data *)dbus_timeout_get_data(timeout);
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if (td->handler)
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{
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td->cd->timeouts = eina_list_remove(td->cd->timeouts, td->handler);
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ecore_timer_del(td->handler);
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td->handler = NULL;
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}
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/* Note: timeout data gets freed when the timeout itself is freed by dbus */
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}
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static void
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cb_timeout_toggle(DBusTimeout *timeout, void *data)
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{
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E_DBus_Timeout_Data *td;
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DBG("timeout toggle!");
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td = (E_DBus_Timeout_Data *)dbus_timeout_get_data(timeout);
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if (dbus_timeout_get_enabled(td->timeout))
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{
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td->interval = dbus_timeout_get_interval(timeout);
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td->handler = ecore_timer_add(td->interval, e_dbus_timeout_handler, td);
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}
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else
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{
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ecore_timer_del(td->handler);
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td->handler = NULL;
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}
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}
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/* dbus connection */
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static E_DBus_Connection *
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e_dbus_connection_new(DBusConnection *conn)
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{
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E_DBus_Connection *cd;
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cd = calloc(1, sizeof(E_DBus_Connection));
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if (!cd) return NULL;
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cd->conn = conn;
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return cd;
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}
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static void
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e_dbus_connection_free(void *data)
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{
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E_DBus_Connection *cd = data;
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E_DBus_Handler_Data *hd;
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Ecore_Timer *timer;
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DBG("e_dbus_connection free!");
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EINA_LIST_FREE(cd->fd_handlers, hd)
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e_dbus_fd_handler_del(hd);
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EINA_LIST_FREE(cd->timeouts, timer)
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ecore_timer_del(timer);
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if (cd->idler) ecore_idler_del(cd->idler);
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free(cd);
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}
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/* public functions */
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int
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e_dbus_init(void)
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{
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if (++_edbus_init_count != 1)
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return _edbus_init_count;
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if (!eina_init())
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{
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fprintf(stderr,"E-dbus: Enable to initialize eina\n");
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return --_edbus_init_count;
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}
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_e_dbus_log_dom = eina_log_domain_register("e_dbus", E_DBUS_COLOR_DEFAULT);
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if (_e_dbus_log_dom < 0)
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{
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EINA_LOG_ERR("Unable to create an 'e_dbus' log domain");
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eina_shutdown();
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return --_edbus_init_count;
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}
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if (!ecore_init())
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{
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ERR("E-dbus: Unable to initialize ecore");
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eina_shutdown();
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return --_edbus_init_count;
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}
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return _edbus_init_count;
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}
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int
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e_dbus_shutdown(void)
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{
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if (_edbus_init_count <= 0)
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{
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EINA_LOG_ERR("Init count not greater than 0 in shutdown.");
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return 0;
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}
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if (--_edbus_init_count)
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return _edbus_init_count;
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ecore_shutdown();
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eina_log_domain_unregister(_e_dbus_log_dom);
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_e_dbus_log_dom = -1;
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eina_shutdown();
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return _edbus_init_count;
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}
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E_DBus_Connection *
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e_dbus_connection_setup(DBusConnection *conn)
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{
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E_DBus_Connection *cd;
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cd = e_dbus_connection_new(conn);
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if (!cd) return NULL;
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/* connection_setup */
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dbus_connection_set_exit_on_disconnect(cd->conn, EINA_FALSE);
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dbus_connection_allocate_data_slot(&connection_slot);
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dbus_connection_set_data(cd->conn, connection_slot, (void *)cd,
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e_dbus_connection_free);
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dbus_connection_set_watch_functions(cd->conn,
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cb_watch_add,
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cb_watch_del,
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cb_watch_toggle,
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cd,
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NULL);
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dbus_connection_set_timeout_functions(cd->conn,
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cb_timeout_add,
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cb_timeout_del,
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cb_timeout_toggle,
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cd,
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NULL);
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dbus_connection_set_dispatch_status_function(cd->conn, cb_dispatch_status, cd, NULL);
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cb_dispatch_status(cd->conn, dbus_connection_get_dispatch_status(cd->conn), cd);
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return cd;
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}
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void
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e_dbus_connection_close(E_DBus_Connection *conn)
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{
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if (!conn) return;
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DBG("e_dbus_connection_close");
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if (e_dbus_idler_active)
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{
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close_connection++;
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return;
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}
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if (--(conn->refcount) != 0) return;
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dbus_connection_free_data_slot(&connection_slot);
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dbus_connection_set_watch_functions(conn->conn,
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NULL,
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NULL,
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NULL,
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NULL, NULL);
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dbus_connection_set_timeout_functions(conn->conn,
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NULL,
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NULL,
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NULL,
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NULL, NULL);
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dbus_connection_set_dispatch_status_function(conn->conn, NULL, NULL, NULL);
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/* Idler functin must be cancelled when dbus connection is unreferenced */
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if (conn->idler)
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{
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ecore_idler_del(conn->idler);
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conn->idler = NULL;
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}
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dbus_connection_close(conn->conn);
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dbus_connection_unref(conn->conn);
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// Note: the E_DBus_Connection gets freed when the dbus_connection is cleaned up by the previous unref
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}
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#undef DDBG
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