| /* Dummy implementation of a subscriber database, roghly HLR/VLR functionality */ |
| |
| /* (C) 2008 by Harald Welte <laforge@gnumonks.org> |
| * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <openbsc/gsm_subscriber.h> |
| #include <openbsc/db.h> |
| |
| |
| LLIST_HEAD(active_subscribers); |
| |
| struct gsm_subscriber *subscr_alloc(void) |
| { |
| struct gsm_subscriber *s; |
| |
| s = malloc(sizeof(struct gsm_subscriber)); |
| if (!s) |
| return NULL; |
| |
| memset(s, 0, sizeof(*s)); |
| llist_add_tail(&s->entry, &active_subscribers); |
| s->use_count = 1; |
| |
| return s; |
| } |
| |
| static void subscr_free(struct gsm_subscriber *subscr) |
| { |
| llist_del(&subscr->entry); |
| free(subscr); |
| } |
| |
| struct gsm_subscriber *subscr_get_by_tmsi(const char *tmsi) |
| { |
| struct gsm_subscriber *subscr; |
| |
| /* we might have a record in memory already */ |
| llist_for_each_entry(subscr, &active_subscribers, entry) { |
| if (strcmp(subscr->tmsi, tmsi) == 0) |
| return subscr_get(subscr); |
| } |
| |
| return db_get_subscriber(GSM_SUBSCRIBER_TMSI, tmsi); |
| } |
| |
| struct gsm_subscriber *subscr_get_by_imsi(const char *imsi) |
| { |
| struct gsm_subscriber *subscr; |
| |
| llist_for_each_entry(subscr, &active_subscribers, entry) { |
| if (strcmp(subscr->imsi, imsi) == 0) |
| return subscr_get(subscr); |
| } |
| |
| return db_get_subscriber(GSM_SUBSCRIBER_IMSI, imsi); |
| } |
| |
| struct gsm_subscriber *subscr_get_by_extension(const char *ext) |
| { |
| struct gsm_subscriber *subscr; |
| |
| llist_for_each_entry(subscr, &active_subscribers, entry) { |
| if (strcmp(subscr->extension, ext) == 0) |
| return subscr_get(subscr); |
| } |
| |
| return db_get_subscriber(GSM_SUBSCRIBER_EXTENSION, ext); |
| } |
| |
| int subscr_update(struct gsm_subscriber *s, struct gsm_bts *bts, int reason) |
| { |
| /* FIXME: Migrate pending requests from one BSC to another */ |
| switch (reason) { |
| case GSM_SUBSCRIBER_UPDATE_ATTACHED: |
| s->current_bts = bts; |
| break; |
| case GSM_SUBSCRIBER_UPDATE_DETACHED: |
| /* Only detach if we are currently attached to this bts */ |
| if (bts == s->current_bts) |
| s->current_bts = NULL; |
| break; |
| default: |
| fprintf(stderr, "subscr_update with unknown reason: %d\n", |
| reason); |
| break; |
| }; |
| return db_sync_subscriber(s); |
| } |
| |
| struct gsm_subscriber *subscr_get(struct gsm_subscriber *subscr) |
| { |
| subscr->use_count++; |
| return subscr; |
| } |
| |
| struct gsm_subscriber *subscr_put(struct gsm_subscriber *subscr) |
| { |
| if (--subscr->use_count <= 0) |
| subscr_free(subscr); |
| return NULL; |
| } |
| |
| void subscr_put_channel(struct gsm_lchan *lchan) |
| { |
| /* |
| * FIXME: Continue with other requests now... by checking |
| * the gsm_subscriber inside the gsm_lchan. Drop the ref count |
| * of the lchan after having asked the next requestee to handle |
| * the channel. |
| */ |
| put_lchan(lchan); |
| } |