diff options
author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2014-11-07 14:07:48 +0100 |
---|---|---|
committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2014-11-11 22:52:21 +0100 |
commit | 3911880b68ddd92c9dd89d6ac20c26807e33f905 (patch) | |
tree | e6f15cd028a1c96879d78218b8ae29edf6d6a6c0 /openbsc/src/libcommon/gsm_subscriber_base.c | |
parent | cdd4302c6dde84693a16b33362a75061480333cd (diff) |
bsc: Move gsm_subscriber_base.c to libcommon
Since it is planned to use struct gsm_subscriber to manage subscriber
data in the SGSN, this file which contains the generic subscriber
related methods is moved to libcommon.
Sponsored-by: On-Waves ehf
Diffstat (limited to 'openbsc/src/libcommon/gsm_subscriber_base.c')
-rw-r--r-- | openbsc/src/libcommon/gsm_subscriber_base.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/openbsc/src/libcommon/gsm_subscriber_base.c b/openbsc/src/libcommon/gsm_subscriber_base.c new file mode 100644 index 000000000..5e00443c2 --- /dev/null +++ b/openbsc/src/libcommon/gsm_subscriber_base.c @@ -0,0 +1,156 @@ +/* The concept of a subscriber as seen by the BSC */ + +/* (C) 2008 by Harald Welte <laforge@gnumonks.org> + * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org> + * (C) 2010 by On-Waves + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 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 Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <assert.h> + +#include <osmocom/core/talloc.h> +#include <openbsc/gsm_subscriber.h> +#include <openbsc/debug.h> + +LLIST_HEAD(active_subscribers); +void *tall_subscr_ctx; + +/* for the gsm_subscriber.c */ +struct llist_head *subscr_bsc_active_subscribers(void) +{ + return &active_subscribers; +} + + +char *subscr_name(struct gsm_subscriber *subscr) +{ + if (strlen(subscr->name)) + return subscr->name; + + return subscr->imsi; +} + +struct gsm_subscriber *subscr_alloc(void) +{ + struct gsm_subscriber *s; + + s = talloc_zero(tall_subscr_ctx, struct gsm_subscriber); + if (!s) + return NULL; + + llist_add_tail(&s->entry, &active_subscribers); + s->use_count = 1; + s->tmsi = GSM_RESERVED_TMSI; + + INIT_LLIST_HEAD(&s->requests); + + return s; +} + +static void subscr_free(struct gsm_subscriber *subscr) +{ + llist_del(&subscr->entry); + talloc_free(subscr); +} + +void subscr_direct_free(struct gsm_subscriber *subscr) +{ + OSMO_ASSERT(subscr->use_count == 1); + subscr_free(subscr); +} + +struct gsm_subscriber *subscr_get(struct gsm_subscriber *subscr) +{ + subscr->use_count++; + DEBUGP(DREF, "subscr %s usage increases usage to: %d\n", + subscr->extension, subscr->use_count); + return subscr; +} + +struct gsm_subscriber *subscr_put(struct gsm_subscriber *subscr) +{ + subscr->use_count--; + DEBUGP(DREF, "subscr %s usage decreased usage to: %d\n", + subscr->extension, subscr->use_count); + if (subscr->use_count <= 0 && !subscr->net->keep_subscr) + subscr_free(subscr); + return NULL; +} + +struct gsm_subscriber *subscr_get_or_create(struct gsm_network *net, + const char *imsi) +{ + struct gsm_subscriber *subscr; + + llist_for_each_entry(subscr, subscr_bsc_active_subscribers(), entry) { + if (strcmp(subscr->imsi, imsi) == 0 && subscr->net == net) + return subscr_get(subscr); + } + + subscr = subscr_alloc(); + if (!subscr) + return NULL; + + strncpy(subscr->imsi, imsi, GSM_IMSI_LENGTH); + subscr->imsi[GSM_IMSI_LENGTH - 1] = '\0'; + subscr->net = net; + return subscr; +} + +struct gsm_subscriber *subscr_active_by_tmsi(struct gsm_network *net, uint32_t tmsi) +{ + struct gsm_subscriber *subscr; + + llist_for_each_entry(subscr, subscr_bsc_active_subscribers(), entry) { + if (subscr->tmsi == tmsi && subscr->net == net) + return subscr_get(subscr); + } + + return NULL; +} + +struct gsm_subscriber *subscr_active_by_imsi(struct gsm_network *net, const char *imsi) +{ + struct gsm_subscriber *subscr; + + llist_for_each_entry(subscr, subscr_bsc_active_subscribers(), entry) { + if (strcmp(subscr->imsi, imsi) == 0 && subscr->net == net) + return subscr_get(subscr); + } + + return NULL; +} + +int subscr_purge_inactive(struct gsm_network *net) +{ + struct gsm_subscriber *subscr, *tmp; + int purged = 0; + + llist_for_each_entry_safe(subscr, tmp, subscr_bsc_active_subscribers(), entry) { + if (subscr->net == net && subscr->use_count <= 0) { + subscr_free(subscr); + purged += 1; + } + } + + return purged; +} |