Martin Hauke | 3f07dac | 2019-11-14 17:49:08 +0100 | [diff] [blame] | 1 | /* SMS queue to continuously attempt to deliver SMS */ |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 2 | /* |
| 3 | * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 7 | * it under the terms of the GNU Affero General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 14 | * GNU Affero General Public License for more details. |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 15 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 16 | * You should have received a copy of the GNU Affero General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 18 | * |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * The difficulty of such a queue is to send a lot of SMS without |
| 23 | * overloading the paging subsystem and the database and other users |
| 24 | * of the MSC. To make the best use we would need to know the number |
| 25 | * of pending paging requests, then throttle the number of SMS we |
| 26 | * want to send and such. |
| 27 | * We will start with a very simple SMS Queue and then try to speed |
| 28 | * things up by collecting data from other parts of the system. |
| 29 | */ |
| 30 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 31 | #include <limits.h> |
| 32 | |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 33 | #include <osmocom/msc/sms_queue.h> |
Neels Hofmeyr | 9084396 | 2017-09-04 15:04:35 +0200 | [diff] [blame] | 34 | #include <osmocom/msc/db.h> |
| 35 | #include <osmocom/msc/debug.h> |
| 36 | #include <osmocom/msc/gsm_data.h> |
| 37 | #include <osmocom/msc/gsm_04_11.h> |
| 38 | #include <osmocom/msc/gsm_subscriber.h> |
| 39 | #include <osmocom/msc/signal.h> |
| 40 | #include <osmocom/msc/vlr.h> |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 41 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 42 | #include <osmocom/core/talloc.h> |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 43 | #include <osmocom/core/utils.h> |
| 44 | #include <osmocom/core/rate_ctr.h> |
| 45 | #include <osmocom/core/stat_item.h> |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 46 | |
Holger Hans Peter Freyther | 81c0e25 | 2010-12-25 14:08:00 +0100 | [diff] [blame] | 47 | #include <osmocom/vty/vty.h> |
| 48 | |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 49 | enum smsq_stat_item_idx { |
| 50 | SMSQ_STAT_SMS_RAM_PENDING, |
| 51 | }; |
| 52 | |
| 53 | static const struct osmo_stat_item_desc smsq_stat_item_desc[] = { |
| 54 | [SMSQ_STAT_SMS_RAM_PENDING] = { "ram:pending", |
| 55 | "Number of SMSs in the in-RAM pending delivery queue" }, |
| 56 | }; |
| 57 | |
| 58 | static const struct osmo_stat_item_group_desc smsq_statg_desc = { |
| 59 | "sms_queue", |
| 60 | "SMS queue", |
| 61 | OSMO_STATS_CLASS_GLOBAL, |
| 62 | ARRAY_SIZE(smsq_stat_item_desc), |
| 63 | smsq_stat_item_desc, |
| 64 | }; |
| 65 | |
| 66 | enum smsq_rate_ctr_idx { |
| 67 | SMSQ_CTR_SMS_DELIVERY_ATTEMPTS, |
| 68 | SMSQ_CTR_SMS_DELIVERY_ACK, |
| 69 | SMSQ_CTR_SMS_DELIVERY_ERR, |
| 70 | SMSQ_CTR_SMS_DELIVERY_NOMEM, |
| 71 | SMSQ_CTR_SMS_DELIVERY_TIMEOUT, |
| 72 | }; |
| 73 | |
| 74 | static const struct rate_ctr_desc smsq_ctr_desc[] = { |
| 75 | [SMSQ_CTR_SMS_DELIVERY_ATTEMPTS] = { "delivery:attempts", |
| 76 | "Attempted MT SMS deliveries to subscriber" }, |
| 77 | [SMSQ_CTR_SMS_DELIVERY_ACK] = { "deliver:ack", |
| 78 | "Successful MT SMS delivery to subscriber" }, |
| 79 | [SMSQ_CTR_SMS_DELIVERY_ERR] = { "deliver:error", |
| 80 | "Erroneous MT SMS delivery" }, |
| 81 | [SMSQ_CTR_SMS_DELIVERY_NOMEM] = { "deliver:no_memory", |
| 82 | "Failed MT SMS delivery due to no memory on MS" }, |
| 83 | [SMSQ_CTR_SMS_DELIVERY_TIMEOUT] = { "deliver:paging_timeout", |
| 84 | "Failed MT SMS delivery due to paging timeout (MS gone?)" }, |
| 85 | }; |
| 86 | |
| 87 | static const struct rate_ctr_group_desc smsq_ctrg_desc = { |
| 88 | "sms_queue", |
| 89 | "SMS queue", |
| 90 | OSMO_STATS_CLASS_GLOBAL, |
| 91 | ARRAY_SIZE(smsq_ctr_desc), |
| 92 | smsq_ctr_desc, |
| 93 | }; |
| 94 | |
| 95 | #define smsq_rate_ctr_inc(smsq, idx) \ |
| 96 | rate_ctr_inc(rate_ctr_group_get_ctr((smsq)->ctrg, idx)) |
| 97 | #define smsq_rate_ctr_add(smsq, idx, val) \ |
| 98 | rate_ctr_add(rate_ctr_group_get_ctr((smsq)->ctrg, idx), val) |
| 99 | |
| 100 | #define smsq_stat_item_inc(smsq, idx) \ |
| 101 | osmo_stat_item_inc(osmo_stat_item_group_get_item((smsq)->statg, idx), 1) |
| 102 | #define smsq_stat_item_dec(smsq, idx) \ |
| 103 | osmo_stat_item_dec(osmo_stat_item_group_get_item((smsq)->statg, idx), 1) |
| 104 | #define smsq_stat_item_set(smsq, idx, val) \ |
| 105 | osmo_stat_item_set(osmo_stat_item_group_get_item((smsq)->statg, idx), val) |
| 106 | |
| 107 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 108 | /* One in-RAM record of a "pending SMS". This is not the SMS itself, but merely |
| 109 | * a pointer to the database record. It holds a reference on the vlr_subscriber |
| 110 | * and some counters. While this object exists in RAM, we are regularly attempting |
| 111 | * to deliver the related SMS. */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 112 | struct gsm_sms_pending { |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 113 | struct llist_head entry; /* gsm_sms_queue.pending_sms */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 114 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 115 | struct vlr_subscr *vsub; /* destination subscriber for this SMS */ |
| 116 | struct msc_a *msc_a; /* MSC_A associated with this SMS */ |
| 117 | unsigned long long sms_id; /* unique ID (in SQL database) of this SMS */ |
| 118 | int failed_attempts; /* count of failed deliver attempts so far */ |
| 119 | int resend; /* should we try re-sending it (now) ? */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 120 | }; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 121 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 122 | /* (global) state of the SMS queue. */ |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 123 | struct gsm_sms_queue { |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 124 | struct osmo_timer_list resend_pending; /* timer triggering sms_resend_pending() */ |
| 125 | struct osmo_timer_list push_queue; /* timer triggering sms_submit_pending() */ |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 126 | struct gsm_network *network; |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 127 | int max_fail; /* maximum number of delivery failures */ |
| 128 | int max_pending; /* maximum number of gsm_sms_pending in RAM */ |
| 129 | int pending; /* current number of gsm_sms_pending in RAM */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 130 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 131 | struct llist_head pending_sms; /* list of gsm_sms_pending */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 132 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 133 | /* last MSISDN for which we read SMS from the database and created gsm_sms_pending records */ |
Vadim Yanitskiy | 8b0737f | 2019-05-25 19:27:17 +0700 | [diff] [blame] | 134 | char last_msisdn[GSM23003_MSISDN_MAX_DIGITS+1]; |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 135 | |
| 136 | /* statistics / counters */ |
| 137 | struct osmo_stat_item_group *statg; |
| 138 | struct rate_ctr_group *ctrg; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 139 | }; |
| 140 | |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 141 | /* private wrapper function to make sure we count all SMS delivery attempts */ |
| 142 | static void _gsm411_send_sms(struct gsm_network *net, struct vlr_subscr *vsub, struct gsm_sms *sms) |
| 143 | { |
| 144 | smsq_rate_ctr_inc(net->sms_queue, SMSQ_CTR_SMS_DELIVERY_ATTEMPTS); |
| 145 | gsm411_send_sms(net, vsub, sms); |
| 146 | } |
| 147 | |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 148 | static int sms_subscr_cb(unsigned int, unsigned int, void *, void *); |
| 149 | static int sms_sms_cb(unsigned int, unsigned int, void *, void *); |
| 150 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 151 | /* look-up a 'gsm_sms_pending' for the given sms_id; return NULL if none */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 152 | static struct gsm_sms_pending *sms_find_pending(struct gsm_sms_queue *smsq, |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 153 | unsigned long long sms_id) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 154 | { |
| 155 | struct gsm_sms_pending *pending; |
| 156 | |
| 157 | llist_for_each_entry(pending, &smsq->pending_sms, entry) { |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 158 | if (pending->sms_id == sms_id) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 159 | return pending; |
| 160 | } |
| 161 | |
| 162 | return NULL; |
| 163 | } |
| 164 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 165 | /* do we currently have a gsm_sms_pending object for the given SMS id? */ |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 166 | int sms_queue_sms_is_pending(struct gsm_sms_queue *smsq, unsigned long long sms_id) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 167 | { |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 168 | return sms_find_pending(smsq, sms_id) != NULL; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 169 | } |
| 170 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 171 | /* find the first pending SMS (in RAM) for the given subscriber */ |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 172 | static struct gsm_sms_pending *sms_subscriber_find_pending( |
| 173 | struct gsm_sms_queue *smsq, |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 174 | struct vlr_subscr *vsub) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 175 | { |
| 176 | struct gsm_sms_pending *pending; |
| 177 | |
| 178 | llist_for_each_entry(pending, &smsq->pending_sms, entry) { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 179 | if (pending->vsub == vsub) |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 180 | return pending; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 181 | } |
| 182 | |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 183 | return NULL; |
| 184 | } |
| 185 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 186 | /* do we have any pending SMS (in RAM) for the given subscriber? */ |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 187 | static int sms_subscriber_is_pending(struct gsm_sms_queue *smsq, |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 188 | struct vlr_subscr *vsub) |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 189 | { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 190 | return sms_subscriber_find_pending(smsq, vsub) != NULL; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 191 | } |
| 192 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 193 | /* allocate a new gsm_sms_pending record and fill it with information from 'sms' */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 194 | static struct gsm_sms_pending *sms_pending_from(struct gsm_sms_queue *smsq, |
| 195 | struct gsm_sms *sms) |
| 196 | { |
| 197 | struct gsm_sms_pending *pending; |
| 198 | |
| 199 | pending = talloc_zero(smsq, struct gsm_sms_pending); |
| 200 | if (!pending) |
| 201 | return NULL; |
| 202 | |
Neels Hofmeyr | 7c5346c | 2019-02-19 02:36:35 +0100 | [diff] [blame] | 203 | vlr_subscr_get(sms->receiver, VSUB_USE_SMS_PENDING); |
| 204 | pending->vsub = sms->receiver; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 205 | pending->sms_id = sms->id; |
Harald Welte | 7262d08 | 2022-05-15 14:58:50 +0200 | [diff] [blame] | 206 | llist_add_tail(&pending->entry, &smsq->pending_sms); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 207 | |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 208 | smsq->pending += 1; |
| 209 | smsq_stat_item_inc(smsq, SMSQ_STAT_SMS_RAM_PENDING); |
Harald Welte | 7262d08 | 2022-05-15 14:58:50 +0200 | [diff] [blame] | 210 | |
| 211 | return pending; |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | /* release a gsm_sms_pending object */ |
| 215 | static void sms_pending_free(struct gsm_sms_queue *smsq, struct gsm_sms_pending *pending) |
| 216 | { |
| 217 | smsq->pending -= 1; |
| 218 | smsq_stat_item_dec(smsq, SMSQ_STAT_SMS_RAM_PENDING); |
Neels Hofmeyr | 7c5346c | 2019-02-19 02:36:35 +0100 | [diff] [blame] | 219 | vlr_subscr_put(pending->vsub, VSUB_USE_SMS_PENDING); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 220 | llist_del(&pending->entry); |
| 221 | talloc_free(pending); |
| 222 | } |
| 223 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 224 | /* this sets the 'resend' flag of the gsm_sms_pending and schedules |
| 225 | * the timer for re-sending */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 226 | static void sms_pending_resend(struct gsm_sms_pending *pending) |
| 227 | { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 228 | struct gsm_network *net = pending->vsub->vlr->user_ctx; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 229 | struct gsm_sms_queue *smsq; |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 230 | LOGP(DLSMS, LOGL_DEBUG, |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 231 | "Scheduling resend of SMS %llu.\n", pending->sms_id); |
| 232 | |
| 233 | pending->resend = 1; |
| 234 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 235 | smsq = net->sms_queue; |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 236 | if (osmo_timer_pending(&smsq->resend_pending)) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 237 | return; |
| 238 | |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 239 | osmo_timer_schedule(&smsq->resend_pending, 1, 0); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 240 | } |
| 241 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 242 | /* call-back when a pending SMS has failed; try another re-send if number of |
| 243 | * attempts is < smsq->max_fail */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 244 | static void sms_pending_failed(struct gsm_sms_pending *pending, int paging_error) |
| 245 | { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 246 | struct gsm_network *net = pending->vsub->vlr->user_ctx; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 247 | struct gsm_sms_queue *smsq; |
| 248 | |
Neels Hofmeyr | 34a36da | 2019-03-06 16:00:41 +0100 | [diff] [blame] | 249 | pending->failed_attempts++; |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 250 | LOGP(DLSMS, LOGL_NOTICE, "Sending SMS %llu failed %d times.\n", |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 251 | pending->sms_id, pending->failed_attempts); |
| 252 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 253 | smsq = net->sms_queue; |
Neels Hofmeyr | 34a36da | 2019-03-06 16:00:41 +0100 | [diff] [blame] | 254 | if (pending->failed_attempts < smsq->max_fail) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 255 | return sms_pending_resend(pending); |
| 256 | |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 257 | sms_pending_free(smsq, pending); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 258 | } |
| 259 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 260 | /* Resend all SMS that are scheduled for a resend. This is done to |
| 261 | * avoid an immediate failure. This iterates over all the (in RAM) |
| 262 | * pending_sms records, checks for resend == true, reads them from the |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 263 | * DB and attempts to send them via _gsm411_send_sms() */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 264 | static void sms_resend_pending(void *_data) |
| 265 | { |
| 266 | struct gsm_sms_pending *pending, *tmp; |
| 267 | struct gsm_sms_queue *smsq = _data; |
| 268 | |
| 269 | llist_for_each_entry_safe(pending, tmp, &smsq->pending_sms, entry) { |
| 270 | struct gsm_sms *sms; |
| 271 | if (!pending->resend) |
| 272 | continue; |
| 273 | |
| 274 | sms = db_sms_get(smsq->network, pending->sms_id); |
| 275 | |
| 276 | /* the sms is gone? Move to the next */ |
| 277 | if (!sms) { |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 278 | sms_pending_free(smsq, pending); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 279 | sms_queue_trigger(smsq); |
| 280 | } else { |
| 281 | pending->resend = 0; |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 282 | _gsm411_send_sms(smsq->network, sms->receiver, sms); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 283 | } |
| 284 | } |
| 285 | } |
| 286 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 287 | /* Find the next pending SMS by cycling through the recipients. We could also |
| 288 | * cycle through the pending SMS, but that might cause us to keep trying to |
| 289 | * send SMS to the same few subscribers repeatedly while not servicing other |
| 290 | * subscribers for a long time. By walking the list of recipient MSISDNs, we |
| 291 | * ensure that all subscribers get their fair time to receive SMS. */ |
| 292 | struct gsm_sms *smsq_take_next_sms(struct gsm_network *net, |
| 293 | char *last_msisdn, |
| 294 | size_t last_msisdn_buflen) |
Holger Hans Peter Freyther | f7e2389 | 2010-12-25 17:45:23 +0100 | [diff] [blame] | 295 | { |
| 296 | struct gsm_sms *sms; |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 297 | int wrapped = 0; |
| 298 | int sanity = 100; |
| 299 | char started_with_msisdn[last_msisdn_buflen]; |
Holger Hans Peter Freyther | f7e2389 | 2010-12-25 17:45:23 +0100 | [diff] [blame] | 300 | |
Max | 98f7467 | 2018-02-05 12:57:06 +0100 | [diff] [blame] | 301 | OSMO_STRLCPY_ARRAY(started_with_msisdn, last_msisdn); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 302 | |
| 303 | while (wrapped < 2 && (--sanity)) { |
| 304 | /* If we wrapped around and passed the first msisdn, we're |
| 305 | * through the entire SMS DB; end it. */ |
| 306 | if (wrapped && strcmp(last_msisdn, started_with_msisdn) >= 0) |
| 307 | break; |
| 308 | |
| 309 | sms = db_sms_get_next_unsent_rr_msisdn(net, last_msisdn, 9); |
| 310 | if (!sms) { |
| 311 | last_msisdn[0] = '\0'; |
Max | 5e2e9bd | 2018-02-06 19:31:08 +0100 | [diff] [blame] | 312 | wrapped++; |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 313 | continue; |
| 314 | } |
| 315 | |
| 316 | /* Whatever happens, next time around service another recipient |
| 317 | */ |
| 318 | osmo_strlcpy(last_msisdn, sms->dst.addr, last_msisdn_buflen); |
| 319 | |
| 320 | /* Is the subscriber attached? If not, go to next SMS */ |
Vadim Yanitskiy | 96262a7 | 2019-03-28 21:25:14 +0700 | [diff] [blame] | 321 | if (!sms->receiver || !sms->receiver->lu_complete) { |
| 322 | LOGP(DLSMS, LOGL_DEBUG, |
Pau Espin Pedrol | f8af776 | 2019-04-09 12:44:35 +0200 | [diff] [blame] | 323 | "Subscriber %s%s is not attached, skipping SMS %llu\n", |
| 324 | sms->receiver ? "" : "MSISDN-", |
| 325 | sms->receiver ? vlr_subscr_msisdn_or_name(sms->receiver) |
| 326 | : sms->dst.addr, sms->id); |
Vadim Yanitskiy | 96262a7 | 2019-03-28 21:25:14 +0700 | [diff] [blame] | 327 | sms_free(sms); |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 328 | continue; |
Vadim Yanitskiy | 96262a7 | 2019-03-28 21:25:14 +0700 | [diff] [blame] | 329 | } |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 330 | |
Holger Hans Peter Freyther | f7e2389 | 2010-12-25 17:45:23 +0100 | [diff] [blame] | 331 | return sms; |
| 332 | } |
| 333 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 334 | DEBUGP(DLSMS, "SMS queue: no SMS to be sent\n"); |
| 335 | return NULL; |
Holger Hans Peter Freyther | f7e2389 | 2010-12-25 17:45:23 +0100 | [diff] [blame] | 336 | } |
| 337 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 338 | /* read up to 'max_pending' pending SMS from the database and add them to the in-memory |
| 339 | * sms_queue; trigger the first delivery attempt. 'submit' in this context means |
| 340 | * "read from the database and add to the in-memory gsm_sms_queue" and is not to be |
| 341 | * confused with the SMS SUBMIT operation a MS performs when sending a MO-SMS. */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 342 | static void sms_submit_pending(void *_data) |
| 343 | { |
| 344 | struct gsm_sms_queue *smsq = _data; |
| 345 | int attempts = smsq->max_pending - smsq->pending; |
Holger Hans Peter Freyther | 2038457 | 2010-12-25 19:28:44 +0100 | [diff] [blame] | 346 | int initialized = 0; |
| 347 | unsigned long long first_sub = 0; |
Holger Hans Peter Freyther | 5479fc8 | 2010-12-25 19:32:12 +0100 | [diff] [blame] | 348 | int attempted = 0, rounds = 0; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 349 | |
Pau Espin Pedrol | fe5b704 | 2019-06-20 10:45:35 +0200 | [diff] [blame] | 350 | LOGP(DLSMS, LOGL_DEBUG, "Attempting to send up to %d SMS\n", attempts); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 351 | |
Holger Hans Peter Freyther | 2038457 | 2010-12-25 19:28:44 +0100 | [diff] [blame] | 352 | do { |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 353 | struct gsm_sms_pending *pending; |
| 354 | struct gsm_sms *sms; |
| 355 | |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 356 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 357 | sms = smsq_take_next_sms(smsq->network, smsq->last_msisdn, |
| 358 | sizeof(smsq->last_msisdn)); |
Neels Hofmeyr | 1e918c3 | 2016-05-09 21:48:53 +0200 | [diff] [blame] | 359 | if (!sms) { |
| 360 | LOGP(DLSMS, LOGL_DEBUG, "Sending SMS done (%d attempted)\n", |
| 361 | attempted); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 362 | break; |
Neels Hofmeyr | 1e918c3 | 2016-05-09 21:48:53 +0200 | [diff] [blame] | 363 | } |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 364 | |
Holger Hans Peter Freyther | 5479fc8 | 2010-12-25 19:32:12 +0100 | [diff] [blame] | 365 | rounds += 1; |
Neels Hofmeyr | 3d6a8be | 2019-11-18 07:15:56 +0100 | [diff] [blame] | 366 | LOGP(DLSMS, LOGL_DEBUG, "Checking whether to send SMS %llu\n", sms->id); |
Holger Hans Peter Freyther | 5479fc8 | 2010-12-25 19:32:12 +0100 | [diff] [blame] | 367 | |
Holger Hans Peter Freyther | 2038457 | 2010-12-25 19:28:44 +0100 | [diff] [blame] | 368 | /* |
| 369 | * This code needs to detect a loop. It assumes that no SMS |
| 370 | * will vanish during the time this is executed. We will remember |
| 371 | * the id of the first GSM subscriber we see and then will |
| 372 | * compare this. The Database code should make sure that we will |
| 373 | * see all other subscribers first before seeing this one again. |
| 374 | * |
| 375 | * It is always scary to have an infinite loop like this. |
| 376 | */ |
| 377 | if (!initialized) { |
| 378 | first_sub = sms->receiver->id; |
| 379 | initialized = 1; |
| 380 | } else if (first_sub == sms->receiver->id) { |
Neels Hofmeyr | 1e918c3 | 2016-05-09 21:48:53 +0200 | [diff] [blame] | 381 | LOGP(DLSMS, LOGL_DEBUG, "Sending SMS done (loop) (%d attempted)\n", |
| 382 | attempted); |
Holger Hans Peter Freyther | 2038457 | 2010-12-25 19:28:44 +0100 | [diff] [blame] | 383 | sms_free(sms); |
| 384 | break; |
| 385 | } |
| 386 | |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 387 | /* no need to send a pending sms */ |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 388 | if (sms_queue_sms_is_pending(smsq, sms->id)) { |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 389 | LOGP(DLSMS, LOGL_DEBUG, |
Holger Hans Peter Freyther | dc53af6 | 2010-12-27 20:12:25 +0100 | [diff] [blame] | 390 | "SMSqueue with pending sms: %llu. Skipping\n", sms->id); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 391 | sms_free(sms); |
| 392 | continue; |
| 393 | } |
| 394 | |
| 395 | /* no need to send a SMS with the same receiver */ |
| 396 | if (sms_subscriber_is_pending(smsq, sms->receiver)) { |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 397 | LOGP(DLSMS, LOGL_DEBUG, |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 398 | "SMSqueue with pending sub: %llu. Skipping\n", sms->receiver->id); |
| 399 | sms_free(sms); |
| 400 | continue; |
| 401 | } |
| 402 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 403 | /* allocate a new gsm_sms_pending object in RAM */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 404 | pending = sms_pending_from(smsq, sms); |
| 405 | if (!pending) { |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 406 | LOGP(DLSMS, LOGL_ERROR, |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 407 | "Failed to create pending SMS entry.\n"); |
| 408 | sms_free(sms); |
| 409 | continue; |
| 410 | } |
| 411 | |
Holger Hans Peter Freyther | 2038457 | 2010-12-25 19:28:44 +0100 | [diff] [blame] | 412 | attempted += 1; |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 413 | _gsm411_send_sms(smsq->network, sms->receiver, sms); |
Holger Hans Peter Freyther | 5479fc8 | 2010-12-25 19:32:12 +0100 | [diff] [blame] | 414 | } while (attempted < attempts && rounds < 1000); |
Holger Hans Peter Freyther | 2038457 | 2010-12-25 19:28:44 +0100 | [diff] [blame] | 415 | |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 416 | LOGP(DLSMS, LOGL_DEBUG, "SMSqueue added %d messages in %d rounds\n", attempted, rounds); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 417 | } |
| 418 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 419 | /* obtain the next pending SMS for given subscriber from database, |
| 420 | * create gsm_sms_pending object and attempt first delivery. If there |
| 421 | * are no SMS pending for the given subscriber, call sms_submit_pending() |
| 422 | * to read more SMS (for any subscriber) into the in-RAM pending queue */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 423 | static void sms_send_next(struct vlr_subscr *vsub) |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 424 | { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 425 | struct gsm_network *net = vsub->vlr->user_ctx; |
| 426 | struct gsm_sms_queue *smsq = net->sms_queue; |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 427 | struct gsm_sms_pending *pending; |
| 428 | struct gsm_sms *sms; |
| 429 | |
| 430 | /* the subscriber should not be in the queue */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 431 | OSMO_ASSERT(!sms_subscriber_is_pending(smsq, vsub)); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 432 | |
| 433 | /* check for more messages for this subscriber */ |
Harald Welte | d43c22e | 2022-05-14 15:35:49 +0200 | [diff] [blame^] | 434 | sms = db_sms_get_unsent_for_subscr(vsub, INT_MAX); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 435 | if (!sms) |
| 436 | goto no_pending_sms; |
| 437 | |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 438 | /* The sms should not be scheduled right now */ |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 439 | OSMO_ASSERT(!sms_queue_sms_is_pending(smsq, sms->id)); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 440 | |
| 441 | /* Remember that we deliver this SMS and send it */ |
| 442 | pending = sms_pending_from(smsq, sms); |
| 443 | if (!pending) { |
| 444 | LOGP(DLSMS, LOGL_ERROR, |
| 445 | "Failed to create pending SMS entry.\n"); |
| 446 | sms_free(sms); |
| 447 | goto no_pending_sms; |
| 448 | } |
| 449 | |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 450 | _gsm411_send_sms(smsq->network, sms->receiver, sms); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 451 | return; |
| 452 | |
| 453 | no_pending_sms: |
| 454 | /* Try to send the SMS to avoid the queue being stuck */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 455 | sms_submit_pending(net->sms_queue); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 456 | } |
| 457 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 458 | /* Trigger a call to sms_submit_pending() in one second */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 459 | int sms_queue_trigger(struct gsm_sms_queue *smsq) |
| 460 | { |
Neels Hofmeyr | 1e918c3 | 2016-05-09 21:48:53 +0200 | [diff] [blame] | 461 | LOGP(DLSMS, LOGL_DEBUG, "Triggering SMS queue\n"); |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 462 | if (osmo_timer_pending(&smsq->push_queue)) |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 463 | return 0; |
| 464 | |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 465 | osmo_timer_schedule(&smsq->push_queue, 1, 0); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 466 | return 0; |
| 467 | } |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 468 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 469 | /* initialize the sms_queue subsystem and read the first batch of SMS from |
| 470 | * the database for delivery */ |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 471 | int sms_queue_start(struct gsm_network *network, int max_pending) |
| 472 | { |
| 473 | struct gsm_sms_queue *sms = talloc_zero(network, struct gsm_sms_queue); |
| 474 | if (!sms) { |
| 475 | LOGP(DMSC, LOGL_ERROR, "Failed to create the SMS queue.\n"); |
| 476 | return -1; |
| 477 | } |
| 478 | |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 479 | sms->statg = osmo_stat_item_group_alloc(sms, &smsq_statg_desc, 0); |
| 480 | if (!sms->statg) |
| 481 | goto err_free; |
| 482 | |
| 483 | sms->ctrg = rate_ctr_group_alloc(sms, &smsq_ctrg_desc, 0); |
| 484 | if (!sms->ctrg) |
| 485 | goto err_statg; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 486 | |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 487 | network->sms_queue = sms; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 488 | INIT_LLIST_HEAD(&sms->pending_sms); |
Holger Hans Peter Freyther | a37e3bc | 2010-12-25 17:43:03 +0100 | [diff] [blame] | 489 | sms->max_fail = 1; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 490 | sms->network = network; |
| 491 | sms->max_pending = max_pending; |
Pablo Neira Ayuso | 5121576 | 2017-05-08 20:57:52 +0200 | [diff] [blame] | 492 | osmo_timer_setup(&sms->push_queue, sms_submit_pending, sms); |
| 493 | osmo_timer_setup(&sms->resend_pending, sms_resend_pending, sms); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 494 | |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 495 | osmo_signal_register_handler(SS_SUBSCR, sms_subscr_cb, network); |
| 496 | osmo_signal_register_handler(SS_SMS, sms_sms_cb, network); |
| 497 | |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 498 | sms_submit_pending(sms); |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 499 | |
| 500 | return 0; |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 501 | |
| 502 | err_statg: |
| 503 | osmo_stat_item_group_free(sms->statg); |
| 504 | err_free: |
| 505 | talloc_free(sms); |
| 506 | |
| 507 | return -ENOMEM; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 508 | } |
| 509 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 510 | /* call-back: Given subscriber is now ready for short messages. */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 511 | static int sub_ready_for_sm(struct gsm_network *net, struct vlr_subscr *vsub) |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 512 | { |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 513 | struct gsm_sms *sms; |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 514 | struct gsm_sms_pending *pending; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 515 | |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 516 | /* |
| 517 | * The code used to be very clever and tried to submit |
| 518 | * a SMS during the Location Updating Request. This has |
| 519 | * two issues: |
| 520 | * 1.) The Phone might not be ready yet, e.g. the C155 |
| 521 | * will not respond to the Submit when it is booting. |
| 522 | * 2.) The queue is already trying to submit SMS to the |
| 523 | * user and by not responding to the paging request |
| 524 | * we will set the LAC back to 0. We would have to |
| 525 | * stop the paging and move things over. |
| 526 | * |
| 527 | * We need to be careful in what we try here. |
| 528 | */ |
| 529 | |
| 530 | /* check if we have pending requests */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 531 | pending = sms_subscriber_find_pending(net->sms_queue, vsub); |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 532 | if (pending) { |
| 533 | LOGP(DMSC, LOGL_NOTICE, |
| 534 | "Pending paging while subscriber %llu attached.\n", |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 535 | vsub->id); |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 536 | return 0; |
| 537 | } |
| 538 | |
Holger Hans Peter Freyther | 074b2b2 | 2011-07-25 00:13:06 +0200 | [diff] [blame] | 539 | /* Now try to deliver any pending SMS to this sub */ |
Harald Welte | d43c22e | 2022-05-14 15:35:49 +0200 | [diff] [blame^] | 540 | sms = db_sms_get_unsent_for_subscr(vsub, INT_MAX); |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 541 | if (!sms) |
| 542 | return -1; |
Vadim Yanitskiy | 24e025e | 2018-11-22 15:42:39 +0700 | [diff] [blame] | 543 | |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 544 | _gsm411_send_sms(net, vsub, sms); |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 545 | return 0; |
| 546 | } |
| 547 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 548 | /* call-back for SS_SUBSCR signals */ |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 549 | static int sms_subscr_cb(unsigned int subsys, unsigned int signal, |
| 550 | void *handler_data, void *signal_data) |
| 551 | { |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 552 | struct vlr_subscr *vsub = signal_data; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 553 | |
| 554 | if (signal != S_SUBSCR_ATTACHED) |
| 555 | return 0; |
| 556 | |
| 557 | /* this is readyForSM */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 558 | return sub_ready_for_sm(handler_data, vsub); |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 559 | } |
| 560 | |
Harald Welte | dc7d841 | 2022-05-14 09:54:15 +0200 | [diff] [blame] | 561 | /* call-back for SS_SMS signals */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 562 | static int sms_sms_cb(unsigned int subsys, unsigned int signal, |
| 563 | void *handler_data, void *signal_data) |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 564 | { |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 565 | struct gsm_network *network = handler_data; |
| 566 | struct sms_signal_data *sig_sms = signal_data; |
| 567 | struct gsm_sms_pending *pending; |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 568 | struct vlr_subscr *vsub; |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 569 | |
| 570 | /* We got a new SMS and maybe should launch the queue again. */ |
| 571 | if (signal == S_SMS_SUBMITTED || signal == S_SMS_SMMA) { |
Holger Hans Peter Freyther | 024dc77 | 2014-02-24 14:29:27 +0100 | [diff] [blame] | 572 | /* TODO: For SMMA we might want to re-use the radio connection. */ |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 573 | sms_queue_trigger(network->sms_queue); |
| 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | if (!sig_sms->sms) |
| 578 | return -1; |
| 579 | |
| 580 | |
| 581 | /* |
| 582 | * Find the entry of our queue. The SMS subsystem will submit |
| 583 | * sms that are not in our control as we just have a channel |
| 584 | * open anyway. |
| 585 | */ |
Stefan Sperling | 87cba1f | 2018-01-22 17:05:37 +0100 | [diff] [blame] | 586 | pending = sms_find_pending(network->sms_queue, sig_sms->sms->id); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 587 | if (!pending) |
| 588 | return 0; |
| 589 | |
| 590 | switch (signal) { |
| 591 | case S_SMS_DELIVERED: |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 592 | smsq_rate_ctr_inc(network->sms_queue, SMSQ_CTR_SMS_DELIVERY_ACK); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 593 | /* Remember the subscriber and clear the pending entry */ |
Neels Hofmeyr | 7c5346c | 2019-02-19 02:36:35 +0100 | [diff] [blame] | 594 | vsub = pending->vsub; |
| 595 | vlr_subscr_get(vsub, __func__); |
Stefan Sperling | 6ba2d5a | 2018-01-18 18:55:26 +0100 | [diff] [blame] | 596 | db_sms_delete_sent_message_by_id(pending->sms_id); |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 597 | sms_pending_free(network->sms_queue, pending); |
Holger Hans Peter Freyther | 93de8b2 | 2014-02-24 16:13:04 +0100 | [diff] [blame] | 598 | /* Attempt to send another SMS to this subscriber */ |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 599 | sms_send_next(vsub); |
Neels Hofmeyr | 7c5346c | 2019-02-19 02:36:35 +0100 | [diff] [blame] | 600 | vlr_subscr_put(vsub, __func__); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 601 | break; |
| 602 | case S_SMS_MEM_EXCEEDED: |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 603 | smsq_rate_ctr_inc(network->sms_queue, SMSQ_CTR_SMS_DELIVERY_NOMEM); |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 604 | sms_pending_free(network->sms_queue, pending); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 605 | sms_queue_trigger(network->sms_queue); |
| 606 | break; |
| 607 | case S_SMS_UNKNOWN_ERROR: |
| 608 | /* |
| 609 | * There can be many reasons for this failure. E.g. the paging |
| 610 | * timed out, the subscriber was not paged at all, or there was |
| 611 | * a protocol error. The current strategy is to try sending the |
| 612 | * next SMS for busy/oom and to retransmit when we have paged. |
| 613 | * |
| 614 | * When the paging expires three times we will disable the |
| 615 | * subscriber. If we have some kind of other transmit error we |
| 616 | * should flag the SMS as bad. |
| 617 | */ |
Neels Hofmeyr | c4628a3 | 2018-12-07 14:47:34 +0100 | [diff] [blame] | 618 | if (sig_sms->paging_result) { |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 619 | smsq_rate_ctr_inc(network->sms_queue, SMSQ_CTR_SMS_DELIVERY_ERR); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 620 | /* BAD SMS? */ |
| 621 | db_sms_inc_deliver_attempts(sig_sms->sms); |
| 622 | sms_pending_failed(pending, 0); |
Neels Hofmeyr | c4628a3 | 2018-12-07 14:47:34 +0100 | [diff] [blame] | 623 | } else { |
Harald Welte | 63494a6 | 2022-05-15 13:03:57 +0200 | [diff] [blame] | 624 | smsq_rate_ctr_inc(network->sms_queue, SMSQ_CTR_SMS_DELIVERY_TIMEOUT); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 625 | sms_pending_failed(pending, 1); |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 626 | } |
| 627 | break; |
| 628 | default: |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 629 | LOGP(DLSMS, LOGL_ERROR, "Unhandled result: %d\n", |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 630 | sig_sms->paging_result); |
| 631 | } |
| 632 | |
Stefan Sperling | 14e0517 | 2018-01-22 17:31:20 +0100 | [diff] [blame] | 633 | /* While here, attempt to remove an expired SMS from the DB. */ |
| 634 | db_sms_delete_oldest_expired_message(); |
| 635 | |
Holger Hans Peter Freyther | 1716406 | 2010-12-24 21:39:55 +0100 | [diff] [blame] | 636 | return 0; |
Holger Hans Peter Freyther | 11b28f9 | 2010-12-24 13:48:27 +0100 | [diff] [blame] | 637 | } |
Holger Hans Peter Freyther | 81c0e25 | 2010-12-25 14:08:00 +0100 | [diff] [blame] | 638 | |
| 639 | /* VTY helper functions */ |
| 640 | int sms_queue_stats(struct gsm_sms_queue *smsq, struct vty *vty) |
| 641 | { |
| 642 | struct gsm_sms_pending *pending; |
| 643 | |
| 644 | vty_out(vty, "SMSqueue with max_pending: %d pending: %d%s", |
| 645 | smsq->max_pending, smsq->pending, VTY_NEWLINE); |
| 646 | |
| 647 | llist_for_each_entry(pending, &smsq->pending_sms, entry) |
Holger Hans Peter Freyther | 583e9ae | 2010-12-27 20:19:48 +0100 | [diff] [blame] | 648 | vty_out(vty, " SMS Pending for Subscriber: %llu SMS: %llu Failed: %d.%s", |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 649 | pending->vsub->id, pending->sms_id, |
Holger Hans Peter Freyther | 583e9ae | 2010-12-27 20:19:48 +0100 | [diff] [blame] | 650 | pending->failed_attempts, VTY_NEWLINE); |
Holger Hans Peter Freyther | 81c0e25 | 2010-12-25 14:08:00 +0100 | [diff] [blame] | 651 | return 0; |
| 652 | } |
Holger Hans Peter Freyther | 3c6f6c2 | 2010-12-25 14:25:12 +0100 | [diff] [blame] | 653 | |
| 654 | int sms_queue_set_max_pending(struct gsm_sms_queue *smsq, int max_pending) |
| 655 | { |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 656 | LOGP(DLSMS, LOGL_NOTICE, "SMSqueue old max: %d new: %d\n", |
Holger Hans Peter Freyther | 3c6f6c2 | 2010-12-25 14:25:12 +0100 | [diff] [blame] | 657 | smsq->max_pending, max_pending); |
| 658 | smsq->max_pending = max_pending; |
| 659 | return 0; |
| 660 | } |
Holger Hans Peter Freyther | 4dcc5e5 | 2010-12-25 14:38:30 +0100 | [diff] [blame] | 661 | |
Holger Hans Peter Freyther | 994dcbb | 2010-12-25 14:50:50 +0100 | [diff] [blame] | 662 | int sms_queue_set_max_failure(struct gsm_sms_queue *smsq, int max_fail) |
| 663 | { |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 664 | LOGP(DLSMS, LOGL_NOTICE, "SMSqueue max failure old: %d new: %d\n", |
Holger Hans Peter Freyther | 994dcbb | 2010-12-25 14:50:50 +0100 | [diff] [blame] | 665 | smsq->max_fail, max_fail); |
| 666 | smsq->max_fail = max_fail; |
| 667 | return 0; |
| 668 | } |
| 669 | |
Holger Hans Peter Freyther | 4dcc5e5 | 2010-12-25 14:38:30 +0100 | [diff] [blame] | 670 | int sms_queue_clear(struct gsm_sms_queue *smsq) |
| 671 | { |
| 672 | struct gsm_sms_pending *pending, *tmp; |
| 673 | |
| 674 | llist_for_each_entry_safe(pending, tmp, &smsq->pending_sms, entry) { |
Holger Hans Peter Freyther | eff40949 | 2012-11-10 19:46:58 +0100 | [diff] [blame] | 675 | LOGP(DLSMS, LOGL_NOTICE, |
Harald Welte | 2483f1b | 2016-06-19 18:06:02 +0200 | [diff] [blame] | 676 | "SMSqueue clearing for sub %llu\n", pending->vsub->id); |
Harald Welte | 7f918af | 2022-05-15 14:55:56 +0200 | [diff] [blame] | 677 | sms_pending_free(smsq, pending); |
Holger Hans Peter Freyther | 4dcc5e5 | 2010-12-25 14:38:30 +0100 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | return 0; |
| 681 | } |