| /* GSM subscriber details for use in SMLC */ |
| /* |
| * (C) 2020 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * |
| * Author: Neels Hofmeyr <neels@hofmeyr.de> |
| * |
| * 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 <osmocom/smlc/debug.h> |
| #include <osmocom/smlc/smlc_data.h> |
| #include <osmocom/smlc/smlc_subscr.h> |
| |
| static void smlc_subscr_free(struct smlc_subscr *smlc_subscr) |
| { |
| llist_del(&smlc_subscr->entry); |
| talloc_free(smlc_subscr); |
| } |
| |
| static int smlc_subscr_use_cb(struct osmo_use_count_entry *e, int32_t old_use_count, const char *file, int line) |
| { |
| struct smlc_subscr *smlc_subscr = e->use_count->talloc_object; |
| int32_t total; |
| int level; |
| |
| if (!e->use) |
| return -EINVAL; |
| |
| total = osmo_use_count_total(&smlc_subscr->use_count); |
| |
| if (total == 0 |
| || (total == 1 && old_use_count == 0 && e->count == 1)) |
| level = LOGL_INFO; |
| else |
| level = LOGL_DEBUG; |
| |
| LOGPSRC(DREF, level, file, line, "%s: %s %s\n", |
| smlc_subscr_to_str_c(OTC_SELECT, smlc_subscr), |
| (e->count - old_use_count) > 0? "+" : "-", e->use); |
| |
| if (e->count < 0) |
| return -ERANGE; |
| |
| if (total == 0) |
| smlc_subscr_free(smlc_subscr); |
| return 0; |
| } |
| |
| static struct smlc_subscr *smlc_subscr_alloc() |
| { |
| struct smlc_subscr *smlc_subscr; |
| |
| smlc_subscr = talloc_zero(g_smlc, struct smlc_subscr); |
| if (!smlc_subscr) |
| return NULL; |
| |
| smlc_subscr->use_count = (struct osmo_use_count){ |
| .talloc_object = smlc_subscr, |
| .use_cb = smlc_subscr_use_cb, |
| }; |
| |
| llist_add_tail(&smlc_subscr->entry, &g_smlc->subscribers); |
| |
| return smlc_subscr; |
| } |
| |
| struct smlc_subscr *smlc_subscr_find(const struct osmo_mobile_identity *imsi, const char *use_token) |
| { |
| struct smlc_subscr *smlc_subscr; |
| if (!imsi) |
| return NULL; |
| |
| llist_for_each_entry(smlc_subscr, &g_smlc->subscribers, entry) { |
| if (!osmo_mobile_identity_cmp(&smlc_subscr->imsi, imsi)) { |
| smlc_subscr_get(smlc_subscr, use_token); |
| return smlc_subscr; |
| } |
| } |
| return NULL; |
| } |
| |
| struct smlc_subscr *smlc_subscr_find_or_create(const struct osmo_mobile_identity *imsi, const char *use_token) |
| { |
| struct smlc_subscr *smlc_subscr; |
| if (!imsi) |
| return NULL; |
| smlc_subscr = smlc_subscr_find(imsi, use_token); |
| if (smlc_subscr) |
| return smlc_subscr; |
| smlc_subscr = smlc_subscr_alloc(); |
| if (!smlc_subscr) |
| return NULL; |
| smlc_subscr->imsi = *imsi; |
| smlc_subscr_get(smlc_subscr, use_token); |
| return smlc_subscr; |
| } |
| |
| int smlc_subscr_to_str_buf(char *buf, size_t buf_len, const struct smlc_subscr *smlc_subscr) |
| { |
| struct osmo_strbuf sb = { .buf = buf, .len = buf_len }; |
| OSMO_STRBUF_APPEND(sb, osmo_mobile_identity_to_str_buf, &smlc_subscr->imsi); |
| OSMO_STRBUF_PRINTF(sb, "["); |
| OSMO_STRBUF_APPEND(sb, osmo_use_count_to_str_buf, &smlc_subscr->use_count); |
| OSMO_STRBUF_PRINTF(sb, "]"); |
| return sb.chars_needed; |
| } |
| |
| char *smlc_subscr_to_str_c(void *ctx, const struct smlc_subscr *smlc_subscr) |
| { |
| OSMO_NAME_C_IMPL(ctx, 64, "ERROR", smlc_subscr_to_str_buf, smlc_subscr) |
| } |