Holger Hans Peter Freyther | 857e5e6 | 2009-06-12 07:08:13 +0200 | [diff] [blame] | 1 | /* The concept of a subscriber for the MSC, roughly HLR/VLR functionality */ |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 2 | |
| 3 | /* (C) 2008 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | e7bd863 | 2013-06-30 15:30:47 +0200 | [diff] [blame] | 4 | * (C) 2009,2013 by Holger Hans Peter Freyther <zecke@selfish.org> |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 5 | * |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 9 | * it under the terms of the GNU Affero General Public License as published by |
| 10 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 16 | * GNU Affero General Public License for more details. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 17 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 18 | * You should have received a copy of the GNU Affero General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 20 | * |
| 21 | */ |
| 22 | |
Harald Welte | 75a983f | 2008-12-27 21:34:06 +0000 | [diff] [blame] | 23 | #include <unistd.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <stdio.h> |
| 26 | #include <string.h> |
Holger Freyther | 85a7b36 | 2009-04-18 13:48:55 +0200 | [diff] [blame] | 27 | #include <assert.h> |
Jan Luebbe | bfbdeec | 2012-12-27 00:27:16 +0100 | [diff] [blame] | 28 | #include <time.h> |
Max | e6052c4 | 2016-06-30 10:25:49 +0200 | [diff] [blame] | 29 | #include <stdbool.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 30 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 31 | #include <osmocom/core/talloc.h> |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 32 | |
Holger Hans Peter Freyther | 763b42a | 2010-12-29 11:07:22 +0100 | [diff] [blame] | 33 | #include <osmocom/vty/vty.h> |
| 34 | |
Harald Welte | 8470bf2 | 2008-12-25 23:28:35 +0000 | [diff] [blame] | 35 | #include <openbsc/gsm_subscriber.h> |
Sylvain Munaut | 5a86e06 | 2010-12-01 22:38:03 +0100 | [diff] [blame] | 36 | #include <openbsc/gsm_04_08.h> |
Holger Freyther | 3e0ef7c | 2009-06-02 02:54:48 +0000 | [diff] [blame] | 37 | #include <openbsc/debug.h> |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 38 | #include <openbsc/paging.h> |
Harald Welte | ea5cf30 | 2009-07-29 23:14:15 +0200 | [diff] [blame] | 39 | #include <openbsc/signal.h> |
Harald Welte | 75a983f | 2008-12-27 21:34:06 +0000 | [diff] [blame] | 40 | #include <openbsc/db.h> |
Holger Hans Peter Freyther | e7bd863 | 2013-06-30 15:30:47 +0200 | [diff] [blame] | 41 | #include <openbsc/chan_alloc.h> |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 42 | #include <openbsc/vlr.h> |
Harald Welte | 52b1f98 | 2008-12-23 20:25:15 +0000 | [diff] [blame] | 43 | |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 44 | int subscr_paging_dispatch(unsigned int hooknum, unsigned int event, |
| 45 | struct msgb *msg, void *data, void *param) |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 46 | { |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 47 | struct subscr_request *request, *tmp; |
Sylvain Munaut | 8a31a3f | 2010-12-01 23:04:03 +0100 | [diff] [blame] | 48 | struct gsm_subscriber_connection *conn = data; |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 49 | struct vlr_subscr *vsub = param; |
Sylvain Munaut | 8a31a3f | 2010-12-01 23:04:03 +0100 | [diff] [blame] | 50 | struct paging_signal_data sig_data; |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 51 | |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 52 | OSMO_ASSERT(vsub && vsub->cs.is_paging); |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 53 | |
Neels Hofmeyr | ce67be1 | 2017-05-08 15:12:20 +0200 | [diff] [blame^] | 54 | /* FIXME: implement stop paging in libmsc; |
| 55 | * faking it for the unit tests to still work */ |
| 56 | msc_fake_paging_request_stop(vsub); |
Holger Hans Peter Freyther | 778c7d1 | 2015-08-03 11:18:23 +0200 | [diff] [blame] | 57 | |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 58 | /* Inform parts of the system we don't know */ |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 59 | sig_data.vsub = vsub; |
Sylvain Munaut | 8a31a3f | 2010-12-01 23:04:03 +0100 | [diff] [blame] | 60 | sig_data.bts = conn ? conn->bts : NULL; |
| 61 | sig_data.conn = conn; |
Holger Hans Peter Freyther | d3baf41 | 2010-12-23 18:19:17 +0100 | [diff] [blame] | 62 | sig_data.paging_result = event; |
Pablo Neira Ayuso | bbc5b99 | 2011-05-06 12:12:31 +0200 | [diff] [blame] | 63 | osmo_signal_dispatch( |
Sylvain Munaut | 8a31a3f | 2010-12-01 23:04:03 +0100 | [diff] [blame] | 64 | SS_PAGING, |
| 65 | event == GSM_PAGING_SUCCEEDED ? |
| 66 | S_PAGING_SUCCEEDED : S_PAGING_EXPIRED, |
| 67 | &sig_data |
| 68 | ); |
| 69 | |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 70 | llist_for_each_entry_safe(request, tmp, &vsub->cs.requests, entry) { |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 71 | llist_del(&request->entry); |
| 72 | request->cbfn(hooknum, event, msg, data, request->param); |
| 73 | talloc_free(request); |
Holger Hans Peter Freyther | ffccb77 | 2010-12-28 17:47:43 +0100 | [diff] [blame] | 74 | } |
Holger Hans Peter Freyther | f72b3d5 | 2010-12-28 17:27:05 +0100 | [diff] [blame] | 75 | |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 76 | /* balanced with the moment we start paging */ |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 77 | vsub->cs.is_paging = false; |
| 78 | vlr_subscr_put(vsub); |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 79 | return 0; |
| 80 | } |
| 81 | |
Neels Hofmeyr | ce67be1 | 2017-05-08 15:12:20 +0200 | [diff] [blame^] | 82 | struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub, int channel_type, gsm_cbfn *cbfn, |
| 83 | void *param) |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 84 | { |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 85 | int rc; |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 86 | struct subscr_request *request; |
| 87 | |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 88 | /* Start paging.. we know it is async so we can do it before */ |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 89 | if (!vsub->cs.is_paging) { |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 90 | LOGP(DMM, LOGL_DEBUG, "Subscriber %s not paged yet.\n", |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 91 | vlr_subscr_name(vsub)); |
Neels Hofmeyr | ce67be1 | 2017-05-08 15:12:20 +0200 | [diff] [blame^] | 92 | |
| 93 | /* FIXME: implement paging in libmsc; |
| 94 | * faking it for the unit tests to still work */ |
| 95 | rc = msc_fake_paging_request(vsub); |
| 96 | |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 97 | if (rc <= 0) { |
| 98 | LOGP(DMM, LOGL_ERROR, "Subscriber %s paging failed: %d\n", |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 99 | vlr_subscr_name(vsub), rc); |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 100 | return NULL; |
| 101 | } |
| 102 | /* reduced on the first paging callback */ |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 103 | vlr_subscr_get(vsub); |
| 104 | vsub->cs.is_paging = true; |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 105 | } |
| 106 | |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 107 | /* TODO: Stop paging in case of memory allocation failure */ |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 108 | request = talloc_zero(vsub, struct subscr_request); |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 109 | if (!request) |
| 110 | return NULL; |
| 111 | |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 112 | request->cbfn = cbfn; |
| 113 | request->param = param; |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 114 | llist_add_tail(&request->entry, &vsub->cs.requests); |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 115 | return request; |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 116 | } |
| 117 | |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 118 | void subscr_remove_request(struct subscr_request *request) |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 119 | { |
Holger Hans Peter Freyther | d6d7aff | 2015-04-06 12:03:45 +0200 | [diff] [blame] | 120 | llist_del(&request->entry); |
| 121 | talloc_free(request); |
Sylvain Munaut | 1e24550 | 2010-12-01 21:07:29 +0100 | [diff] [blame] | 122 | } |
| 123 | |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 124 | struct gsm_subscriber_connection *connection_for_subscr(struct vlr_subscr *vsub) |
Holger Hans Peter Freyther | 7634ec1 | 2013-10-04 08:35:11 +0200 | [diff] [blame] | 125 | { |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 126 | struct gsm_network *net = vsub->vlr->user_ctx; |
Neels Hofmeyr | 1a60644 | 2016-05-10 13:56:43 +0200 | [diff] [blame] | 127 | struct gsm_subscriber_connection *conn; |
| 128 | |
| 129 | llist_for_each_entry(conn, &net->subscr_conns, entry) { |
Harald Welte | 9066b74 | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 130 | if (conn->vsub == vsub) |
Neels Hofmeyr | 1a60644 | 2016-05-10 13:56:43 +0200 | [diff] [blame] | 131 | return conn; |
| 132 | } |
| 133 | |
| 134 | return NULL; |
| 135 | } |