move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7

1 files changed, 163 insertions, 0 deletions

diff --git a/src/libcommon/gsm_subscriber_base.c b/src/libcommon/gsm_subscriber_base.c
new file mode 100644
index 000000000..1ecdee5a5
--- /dev/null
+++ b/src/libcommon/gsm_subscriber_base.c
@@ -0,0 +1,163 @@
+/* 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 <osmocom/core/utils.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 (!subscr)
+		return "unknown";
+
+	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->group && subscr->group->keep_subscr) ||
+	      subscr->keep_in_ram))
+		subscr_free(subscr);
+	return NULL;
+}
+
+struct gsm_subscriber *subscr_get_or_create(struct gsm_subscriber_group *sgrp,
+					    const char *imsi)
+{
+	struct gsm_subscriber *subscr;
+
+	llist_for_each_entry(subscr, subscr_bsc_active_subscribers(), entry) {
+		if (strcmp(subscr->imsi, imsi) == 0 && subscr->group == sgrp)
+			return subscr_get(subscr);
+	}
+
+	subscr = subscr_alloc();
+	if (!subscr)
+		return NULL;
+
+	osmo_strlcpy(subscr->imsi, imsi, sizeof(subscr->imsi));
+	subscr->group = sgrp;
+	return subscr;
+}
+
+struct gsm_subscriber *subscr_active_by_tmsi(struct gsm_subscriber_group *sgrp,
+					     uint32_t tmsi)
+{
+	struct gsm_subscriber *subscr;
+
+	llist_for_each_entry(subscr, subscr_bsc_active_subscribers(), entry) {
+		if (subscr->tmsi == tmsi && subscr->group == sgrp)
+			return subscr_get(subscr);
+	}
+
+	return NULL;
+}
+
+struct gsm_subscriber *subscr_active_by_imsi(struct gsm_subscriber_group *sgrp,
+					     const char *imsi)
+{
+	struct gsm_subscriber *subscr;
+
+	llist_for_each_entry(subscr, subscr_bsc_active_subscribers(), entry) {
+		if (strcmp(subscr->imsi, imsi) == 0 && subscr->group == sgrp)
+			return subscr_get(subscr);
+	}
+
+	return NULL;
+}
+
+int subscr_purge_inactive(struct gsm_subscriber_group *sgrp)
+{
+	struct gsm_subscriber *subscr, *tmp;
+	int purged = 0;
+
+	llist_for_each_entry_safe(subscr, tmp, subscr_bsc_active_subscribers(), entry) {
+		if (subscr->group == sgrp && subscr->use_count <= 0) {
+			subscr_free(subscr);
+			purged += 1;
+		}
+	}
+
+	return purged;
+}