This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/gerrit-log@lists.osmocom.org/.
Neels Hofmeyr gerrit-no-reply at lists.osmocom.org
Review at https://gerrit.osmocom.org/3646
libmsc: add support for SMPP delivery receipts
If the mobile phone requests a status report via SMS, send a DELIVER_SM
with esm_class = Delivery Receipt to ESME to indicate that the SMS has
been already delivered to its destination.
MS GSM 03.40 SMSC SMPP 3.4 ESME
| | |
| SMS-DELIVER | |
|<----------------------------| |
| GSM 04.11 RP-ACK | |
|---------------------------->| |
| | DELIVER-SM |
| | esm_class = Delivery Receipt |
| |------------------------------->|
| | DELIVER-SM-RESP |
| |<-------------------------------|
| | |
This patch implements "Appendix B. Delivery Receipt Format" as specified
in the SMPP 3.4 specs. This string is conveyed in the SMS message as
data, and it is only meaningful to the ESME, for logging purposes. The
"submit date" and "done date" are not yet set, and other fields are just
sent with dummy values, so they are left to be finished as future work.
The new SMPP TLV tag TLVID_user_message_reference is added to the SMPP
messages inconditionally now since this information is required by
delivery-reports to associate the status-report with the original SMS.
Change-Id: Ic1a9023074bfa938099377980b6aff9b262fab2a
---
M include/openbsc/gsm_data.h
M src/libmsc/gsm_04_11.c
M src/libmsc/smpp_openbsc.c
M src/libmsc/smpp_smsc.h
4 files changed, 76 insertions(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/46/3646/1
diff --git a/include/openbsc/gsm_data.h b/include/openbsc/gsm_data.h
index 02823c9..51cf6dc 100644
--- a/include/openbsc/gsm_data.h
+++ b/include/openbsc/gsm_data.h
@@ -511,6 +511,7 @@
} smpp;
unsigned long validity_minutes;
+ bool is_report;
uint8_t reply_path_req;
uint8_t status_rep_req;
uint8_t ud_hdr_ind;
diff --git a/src/libmsc/gsm_04_11.c b/src/libmsc/gsm_04_11.c
index cd23883..b4fa3df 100644
--- a/src/libmsc/gsm_04_11.c
+++ b/src/libmsc/gsm_04_11.c
@@ -594,6 +594,57 @@
rpud_len, rp_ud);
}
+static struct gsm_sms *sms_report_alloc(struct gsm_sms *sms)
+{
+ struct gsm_sms *sms_report;
+ int len;
+
+ sms_report = sms_alloc();
+ OSMO_ASSERT(sms_report);
+
+ sms_report->msg_ref = sms->msg_ref;
+ sms_report->protocol_id = sms->protocol_id;
+ sms_report->data_coding_scheme = GSM338_DCS_1111_8BIT_DATA;
+
+ /* Invert address to send status report back to origin. */
+ sms_report->src = sms->dst;
+ sms_report->dst = sms->src;
+
+ /* As specified by Appendix B. Delivery Receipt Format.
+ * TODO: Many fields in this string are just set with dummy values,
+ * revisit this.
+ */
+ len = snprintf((char *)sms_report->user_data,
+ sizeof(sms_report->user_data),
+ "id:%.08llu sub:000 dlvrd:000 submit date:YYMMDDhhmm done date:YYMMDDhhmm stat:DELIVRD err:000 text:%.20s",
+ sms->id, sms->user_data);
+ sms_report->user_data_len = len;
+ LOGP(DLSMS, LOGL_NOTICE, "%s\n", sms_report->user_data);
+
+ /* This represents a sms report. */
+ sms_report->is_report = true;
+
+ return sms_report;
+}
+
+static void sms_status_report(struct gsm_sms *gsms,
+ struct gsm_subscriber_connection *conn)
+{
+ struct gsm_sms *sms_report;
+ int rc;
+
+ sms_report = sms_report_alloc(gsms);
+
+ rc = sms_route_mt_sms(conn, sms_report);
+ if (rc < 0) {
+ LOGP(DLSMS, LOGL_ERROR,
+ "Failed to send status report! err=%d\n", rc);
+ }
+ LOGP(DLSMS, LOGL_NOTICE, "Status report has been sent\n");
+
+ sms_free(sms_report);
+}
+
/* Receive a 04.11 RP-ACK message (response to RP-DATA from us) */
static int gsm411_rx_rp_ack(struct msgb *msg, struct gsm_trans *trans,
struct gsm411_rp_hdr *rph)
@@ -615,6 +666,9 @@
send_signal(S_SMS_DELIVERED, trans, sms, 0);
+ if (sms->status_rep_req)
+ sms_status_report(sms, trans->conn);
+
sms_free(sms);
trans->sms.sms = NULL;
diff --git a/src/libmsc/smpp_openbsc.c b/src/libmsc/smpp_openbsc.c
index 5de1368..03482be 100644
--- a/src/libmsc/smpp_openbsc.c
+++ b/src/libmsc/smpp_openbsc.c
@@ -201,6 +201,10 @@
sms->user_data_len = sms_msg_len;
}
+ t = find_tlv(submit->tlv, TLVID_user_message_reference);
+ if (t)
+ sms->msg_ref = ntohs(t->value.val16);
+
*psms = sms;
return ESME_ROK;
}
@@ -518,6 +522,9 @@
struct gsm_subscriber_connection *conn;
struct gsm_trans *trans;
+ if (cmd->is_report)
+ goto out;
+
conn = connection_for_subscr(cmd->vsub);
if (!conn) {
LOGP(DSMPP, LOGL_ERROR, "No connection to subscriber anymore\n");
@@ -541,6 +548,9 @@
struct gsm_subscriber_connection *conn;
struct gsm_trans *trans;
int gsm411_cause;
+
+ if (cmd->is_report)
+ goto out;
conn = connection_for_subscr(cmd->vsub);
if (!conn) {
@@ -579,6 +589,7 @@
return -1;
cmd->sequence_nr = sequence_number;
+ cmd->is_report = sms->is_report;
cmd->gsm411_msg_ref = sms->gsm411.msg_ref;
cmd->gsm411_trans_id = sms->gsm411.transaction_id;
cmd->vsub = vlr_subscr_get(vsub);
@@ -643,7 +654,12 @@
memcpy(deliver.destination_addr, sms->dst.addr,
sizeof(deliver.destination_addr));
- deliver.esm_class = 1; /* datagram mode */
+ /* Short message contains a delivery receipt? Sect. 5.2.12. */
+ if (sms->is_report)
+ deliver.esm_class = 0x04;
+ else
+ deliver.esm_class = 1; /* datagram mode */
+
if (sms->ud_hdr_ind)
deliver.esm_class |= 0x40;
if (sms->reply_path_req)
@@ -692,6 +708,9 @@
append_osmo_tlvs(&deliver.tlv, conn->lchan);
#endif
+ append_tlv_u16(&deliver.tlv, TLVID_user_message_reference,
+ sms->msg_ref);
+
ret = smpp_tx_deliver(esme, &deliver);
if (ret < 0)
return ret;
diff --git a/src/libmsc/smpp_smsc.h b/src/libmsc/smpp_smsc.h
index 0f1d35c..755e685 100644
--- a/src/libmsc/smpp_smsc.h
+++ b/src/libmsc/smpp_smsc.h
@@ -92,6 +92,7 @@
uint32_t sequence_nr;
uint32_t gsm411_msg_ref;
uint8_t gsm411_trans_id;
+ bool is_report;
struct osmo_timer_list response_timer;
};
--
To view, visit https://gerrit.osmocom.org/3646
To unsubscribe, visit https://gerrit.osmocom.org/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ic1a9023074bfa938099377980b6aff9b262fab2a
Gerrit-PatchSet: 1
Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Pablo Neira Ayuso <pablo at gnumonks.org>