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, 118 insertions, 0 deletions

diff --git a/src/libfilter/bsc_msg_acc.c b/src/libfilter/bsc_msg_acc.c
new file mode 100644
index 000000000..bfc5bdd3f
--- /dev/null
+++ b/src/libfilter/bsc_msg_acc.c
@@ -0,0 +1,118 @@
+/*
+ * (C) 2010-2015 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010-2011 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 <openbsc/bsc_msg_filter.h>
+#include <openbsc/bsc_nat.h>
+
+#include <osmocom/core/rate_ctr.h>
+#include <osmocom/core/stats.h>
+
+#include <string.h>
+
+static const struct rate_ctr_desc acc_list_ctr_description[] = {
+	[ACC_LIST_LOCAL_FILTER]	= { "access-list.local-filter", "Rejected by rule for local"},
+	[ACC_LIST_GLOBAL_FILTER]= { "access-list.global-filter", "Rejected by rule for global"},
+};
+
+static const struct rate_ctr_group_desc bsc_cfg_acc_list_desc = {
+	.group_name_prefix = "nat.filter",
+	.group_description = "NAT Access-List Statistics",
+	.num_ctr = ARRAY_SIZE(acc_list_ctr_description),
+	.ctr_desc = acc_list_ctr_description,
+	.class_id = OSMO_STATS_CLASS_GLOBAL,
+};
+
+
+int bsc_msg_acc_lst_check_allow(struct bsc_msg_acc_lst *lst, const char *mi_string)
+{
+	struct bsc_msg_acc_lst_entry *entry;
+
+	llist_for_each_entry(entry, &lst->fltr_list, list) {
+		if (!entry->imsi_allow)
+			continue;
+		if (regexec(&entry->imsi_allow_re, mi_string, 0, NULL, 0) == 0)
+			return 0;
+	}
+
+	return 1;
+}
+
+struct bsc_msg_acc_lst *bsc_msg_acc_lst_find(struct llist_head *head, const char *name)
+{
+	struct bsc_msg_acc_lst *lst;
+
+	if (!name)
+		return NULL;
+
+	llist_for_each_entry(lst, head, list)
+		if (strcmp(lst->name, name) == 0)
+			return lst;
+
+	return NULL;
+}
+
+struct bsc_msg_acc_lst *bsc_msg_acc_lst_get(void *ctx, struct llist_head *head, const char *name)
+{
+	struct bsc_msg_acc_lst *lst;
+
+	lst = bsc_msg_acc_lst_find(head, name);
+	if (lst)
+		return lst;
+
+	lst = talloc_zero(ctx, struct bsc_msg_acc_lst);
+	if (!lst) {
+		LOGP(DNAT, LOGL_ERROR, "Failed to allocate access list");
+		return NULL;
+	}
+
+	/* TODO: get the index right */
+	lst->stats = rate_ctr_group_alloc(lst, &bsc_cfg_acc_list_desc, 0);
+	if (!lst->stats) {
+		talloc_free(lst);
+		return NULL;
+	}
+
+	INIT_LLIST_HEAD(&lst->fltr_list);
+	lst->name = talloc_strdup(lst, name);
+	llist_add_tail(&lst->list, head);
+	return lst;
+}
+
+void bsc_msg_acc_lst_delete(struct bsc_msg_acc_lst *lst)
+{
+	llist_del(&lst->list);
+	rate_ctr_group_free(lst->stats);
+	talloc_free(lst);
+}
+
+struct bsc_msg_acc_lst_entry *bsc_msg_acc_lst_entry_create(struct bsc_msg_acc_lst *lst)
+{
+	struct bsc_msg_acc_lst_entry *entry;
+
+	entry = talloc_zero(lst, struct bsc_msg_acc_lst_entry);
+	if (!entry)
+		return NULL;
+
+	entry->cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED;
+	entry->lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED;
+	llist_add_tail(&entry->list, &lst->fltr_list);
+	return entry;
+}
+