Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 1 | /* OpenBSC SMPP 3.4 interface, SMSC-side implementation */ |
| 2 | |
| 3 | /* (C) 2012 by Harald Welte <laforge@gnumonks.org> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <unistd.h> |
| 23 | #include <string.h> |
| 24 | #include <stdint.h> |
| 25 | #include <errno.h> |
| 26 | |
| 27 | #include <smpp34.h> |
| 28 | #include <smpp34_structs.h> |
| 29 | #include <smpp34_params.h> |
| 30 | |
| 31 | #include <osmocom/core/utils.h> |
| 32 | #include <osmocom/core/msgb.h> |
| 33 | #include <osmocom/core/logging.h> |
| 34 | #include <osmocom/core/talloc.h> |
| 35 | #include <osmocom/gsm/protocol/gsm_04_11.h> |
| 36 | |
| 37 | #include <openbsc/gsm_subscriber.h> |
| 38 | #include <openbsc/debug.h> |
| 39 | #include <openbsc/db.h> |
| 40 | #include <openbsc/gsm_04_11.h> |
Harald Welte | d4bdee7 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 41 | #include <openbsc/gsm_data.h> |
| 42 | #include <openbsc/signal.h> |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 43 | |
| 44 | #include "smpp_smsc.h" |
| 45 | |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 46 | /*! \brief find gsm_subscriber for a given SMPP NPI/TON/Address */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 47 | static struct gsm_subscriber *subscr_by_dst(struct gsm_network *net, |
| 48 | uint8_t npi, uint8_t ton, const char *addr) |
| 49 | { |
| 50 | struct gsm_subscriber *subscr = NULL; |
| 51 | |
| 52 | switch (npi) { |
| 53 | case NPI_Land_Mobile_E212: |
| 54 | subscr = subscr_get_by_imsi(net, addr); |
| 55 | break; |
| 56 | case NPI_ISDN_E163_E164: |
| 57 | case NPI_Private: |
| 58 | subscr = subscr_get_by_extension(net, addr); |
| 59 | break; |
| 60 | default: |
| 61 | LOGP(DSMPP, LOGL_NOTICE, "Unsupported NPI: %u\n", npi); |
| 62 | break; |
| 63 | } |
| 64 | |
| 65 | return subscr; |
| 66 | } |
| 67 | |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 68 | /*! \brief find a TLV with given tag in list of libsmpp34 TLVs */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 69 | struct tlv_t *find_tlv(struct tlv_t *head, uint16_t tag) |
| 70 | { |
| 71 | struct tlv_t *t; |
| 72 | |
| 73 | for (t = head; t != NULL; t = t->next) { |
| 74 | if (t->tag == tag) |
| 75 | return t; |
| 76 | } |
| 77 | return NULL; |
| 78 | } |
| 79 | |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 80 | /*! \brief convert from submit_sm_t to gsm_sms */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 81 | static int submit_to_sms(struct gsm_sms **psms, struct gsm_network *net, |
| 82 | const struct submit_sm_t *submit) |
| 83 | { |
| 84 | struct gsm_subscriber *dest; |
| 85 | struct gsm_sms *sms; |
| 86 | struct tlv_t *t; |
| 87 | const uint8_t *sms_msg; |
| 88 | unsigned int sms_msg_len; |
| 89 | |
| 90 | dest = subscr_by_dst(net, submit->dest_addr_npi, |
| 91 | submit->dest_addr_ton, |
| 92 | (const char *)submit->destination_addr); |
| 93 | if (!dest) { |
| 94 | LOGP(DSMS, LOGL_NOTICE, "SMPP SUBMIT-SM for unknown subscriber: " |
| 95 | "%s (NPI=%u)\n", submit->destination_addr, |
| 96 | submit->dest_addr_npi); |
| 97 | return ESME_RINVDSTADR; |
| 98 | } |
| 99 | |
| 100 | t = find_tlv(submit->tlv, TLVID_message_payload); |
| 101 | if (t) { |
| 102 | if (submit->sm_length) { |
| 103 | /* ERROR: we cannot have botH! */ |
| 104 | return ESME_ROPTPARNOTALLWD; |
| 105 | } |
| 106 | sms_msg = t->value.octet; |
| 107 | sms_msg_len = t->length; |
| 108 | } else if (submit->short_message && submit->sm_length) { |
| 109 | sms_msg = submit->short_message; |
| 110 | sms_msg_len = submit->sm_length; |
| 111 | } else { |
| 112 | sms_msg = NULL; |
| 113 | sms_msg_len = 0; |
| 114 | } |
| 115 | |
| 116 | sms = sms_alloc(); |
Harald Welte | d4bdee7 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 117 | sms->source = SMS_SOURCE_SMPP; |
| 118 | sms->smpp.sequence_nr = submit->sequence_number; |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 119 | sms->receiver = subscr_get(dest); |
| 120 | strncpy(sms->dest_addr, dest->extension, sizeof(sms->dest_addr)-1); |
| 121 | sms->sender = subscr_get_by_id(net, 1); |
| 122 | |
| 123 | if (submit->esm_class & 0x40) |
| 124 | sms->ud_hdr_ind = 1; |
| 125 | |
| 126 | if (submit->esm_class & 0x80) { |
| 127 | sms->reply_path_req = 1; |
| 128 | #warning Implement reply path |
| 129 | } |
| 130 | |
Harald Welte | 9ad0362 | 2012-11-08 22:15:04 +0100 | [diff] [blame^] | 131 | if (submit->data_coding == 0x00 || /* SMSC default */ |
| 132 | submit->data_coding == 0x01 || /* GSM default alphabet */ |
| 133 | (submit->data_coding & 0xFC) == 0xF0) { /* 03.38 DCS default */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 134 | sms->data_coding_scheme = GSM338_DCS_1111_7BIT; |
| 135 | strncpy(sms->text, (char *)sms_msg, |
| 136 | OSMO_MIN(sizeof(sms->text)-1, sms_msg_len)); |
| 137 | sms->user_data_len = gsm_7bit_encode(sms->user_data, sms->text); |
Harald Welte | 9ad0362 | 2012-11-08 22:15:04 +0100 | [diff] [blame^] | 138 | } else if (submit->data_coding == 0x02 || |
| 139 | submit->data_coding == 0x04 || |
| 140 | (submit->data_coding & 0xFC) == 0xF4) { /* 03.38 DCS 8bit */ |
| 141 | /* 8-bit binary */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 142 | sms->data_coding_scheme = GSM338_DCS_1111_8BIT_DATA; |
| 143 | memcpy(sms->user_data, sms_msg, sms_msg_len); |
| 144 | sms->user_data_len = sms_msg_len; |
Harald Welte | 9ad0362 | 2012-11-08 22:15:04 +0100 | [diff] [blame^] | 145 | } else if (submit->data_coding == 0x80) { |
| 146 | /* UCS-2 */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 147 | sms->data_coding_scheme = (2 << 2); |
| 148 | memcpy(sms->user_data, sms_msg, submit->sm_length); |
| 149 | sms->user_data_len = sms_msg_len; |
Harald Welte | 9ad0362 | 2012-11-08 22:15:04 +0100 | [diff] [blame^] | 150 | } else { |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 151 | sms_free(sms); |
| 152 | return ESME_RUNKNOWNERR; |
| 153 | } |
| 154 | |
| 155 | *psms = sms; |
| 156 | return ESME_ROK; |
| 157 | } |
| 158 | |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 159 | /*! \brief handle incoming libsmpp34 ssubmit_sm_t from remote ESME */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 160 | int handle_smpp_submit(struct osmo_esme *esme, struct submit_sm_t *submit, |
| 161 | struct submit_sm_resp_t *submit_r) |
| 162 | { |
| 163 | struct gsm_sms *sms; |
| 164 | int rc = -1; |
| 165 | |
| 166 | rc = submit_to_sms(&sms, esme->smsc->priv, submit); |
| 167 | if (rc != ESME_ROK) { |
| 168 | submit_r->command_status = rc; |
| 169 | return 0; |
| 170 | } |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 171 | smpp_esme_get(esme); |
Harald Welte | d4bdee7 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 172 | sms->smpp.esme = esme; |
Harald Welte | 9ad0362 | 2012-11-08 22:15:04 +0100 | [diff] [blame^] | 173 | sms->protocol_id = submit->protocol_id; |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 174 | |
| 175 | switch (submit->esm_class & 3) { |
| 176 | case 0: /* default */ |
| 177 | case 1: /* datagram */ |
| 178 | case 3: /* store-and-forward */ |
| 179 | rc = db_sms_store(sms); |
| 180 | if (rc < 0) { |
| 181 | LOGP(DSMS, LOGL_ERROR, "SMPP SUBMIT-SM: Unable to " |
| 182 | "store SMS in database\n"); |
| 183 | sms_free(sms); |
| 184 | submit_r->command_status = ESME_RSYSERR; |
| 185 | return 0; |
| 186 | } |
| 187 | strcpy((char *)submit_r->message_id, "msg_id_not_implemented"); |
| 188 | LOGP(DSMS, LOGL_INFO, "SMPP SUBMIT-SM: Stored in DB\n"); |
| 189 | rc = 0; |
| 190 | break; |
| 191 | case 2: /* forward (i.e. transaction) mode */ |
Harald Welte | d4bdee7 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 192 | sms->smpp.transaction_mode = 1; |
| 193 | gsm411_send_sms_subscr(sms->receiver, sms); |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 194 | rc = 1; /* don't send any response yet */ |
| 195 | break; |
| 196 | } |
| 197 | return rc; |
| 198 | } |
| 199 | |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 200 | /*! \brief signal handler for status of attempted SMS deliveries */ |
Harald Welte | d4bdee7 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 201 | static int smpp_sms_cb(unsigned int subsys, unsigned int signal, |
| 202 | void *handler_data, void *signal_data) |
| 203 | { |
| 204 | struct gsm_network *network = handler_data; |
| 205 | struct sms_signal_data *sig_sms = signal_data; |
| 206 | struct gsm_sms *sms = sig_sms->sms; |
| 207 | int rc = 0; |
| 208 | |
| 209 | if (!sms) |
| 210 | return 0; |
| 211 | |
| 212 | if (sms->source != SMS_SOURCE_SMPP) |
| 213 | return 0; |
| 214 | |
| 215 | switch (signal) { |
| 216 | case S_SMS_UNKNOWN_ERROR: |
| 217 | if (sms->smpp.transaction_mode) { |
| 218 | /* Send back the SUBMIT-SM response with apropriate error */ |
| 219 | LOGP(DSMS, LOGL_INFO, "SMPP SUBMIT-SM: Error\n"); |
| 220 | rc = smpp_tx_submit_r(sms->smpp.esme, |
| 221 | sms->smpp.sequence_nr, |
| 222 | ESME_RDELIVERYFAILURE, |
| 223 | sms->smpp.msg_id); |
| 224 | } |
| 225 | break; |
| 226 | case S_SMS_DELIVERED: |
| 227 | /* SMS layer tells us the delivery has been completed */ |
| 228 | if (sms->smpp.transaction_mode) { |
| 229 | /* Send back the SUBMIT-SM response */ |
| 230 | LOGP(DSMS, LOGL_INFO, "SMPP SUBMIT-SM: Success\n"); |
| 231 | rc = smpp_tx_submit_r(sms->smpp.esme, |
| 232 | sms->smpp.sequence_nr, |
| 233 | ESME_ROK, sms->smpp.msg_id); |
| 234 | } |
| 235 | break; |
| 236 | } |
| 237 | |
| 238 | return rc; |
| 239 | } |
| 240 | |
Harald Welte | e94db49 | 2012-11-08 20:11:05 +0100 | [diff] [blame] | 241 | /*! \brief Initialize the OpenBSC SMPP interface */ |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 242 | int smpp_openbsc_init(struct gsm_network *net, uint16_t port) |
| 243 | { |
| 244 | struct smsc *smsc = talloc_zero(net, struct smsc); |
| 245 | int rc; |
| 246 | |
| 247 | smsc->priv = net; |
| 248 | |
| 249 | rc = smpp_smsc_init(smsc, port); |
| 250 | if (rc < 0) |
| 251 | talloc_free(smsc); |
| 252 | |
Harald Welte | d4bdee7 | 2012-11-08 19:44:08 +0100 | [diff] [blame] | 253 | osmo_signal_register_handler(SS_SMS, smpp_sms_cb, net); |
| 254 | |
Harald Welte | f1033cc | 2012-11-08 16:14:37 +0100 | [diff] [blame] | 255 | return rc; |
| 256 | } |
| 257 | |