| /* |
| * (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 <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, |
| }; |
| |
| |
| 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; |
| } |
| |