That was a bad idea from the very beginning. A visible result of this is a wrong
SMS routing when you change subscriber extensions, while having queued SMS. It's
also a very wrong thing from the code layering perspective.

I think the next logical step should be to remove "receiver" pointer from
the gsm_sms structure into a structure, special for the internal SMS queue.
---
 openbsc/src/libmsc/db.c |   24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/openbsc/src/libmsc/db.c b/openbsc/src/libmsc/db.c
index d60f73e..2c77538 100644
--- a/openbsc/src/libmsc/db.c
+++ b/openbsc/src/libmsc/db.c
@@ -51,7 +51,6 @@ static struct gsm_sms *sms_from_result(struct gsm_network 
*net, dbi_result resul
                "id INTEGER PRIMARY KEY AUTOINCREMENT, " \
                "created TIMESTAMP NOT NULL, " \
                "sent TIMESTAMP, " \
-               "receiver_id INTEGER NOT NULL, " \
                "deliver_attempts INTEGER NOT NULL DEFAULT 0, " \
                /* data directly copied/derived from SMS */ \
                "valid_until TIMESTAMP, " \
@@ -1256,19 +1255,19 @@ int db_sms_store(struct gsm_sms *sms)
        /* FIXME: correct validity period */
        result = dbi_conn_queryf(conn,
                "INSERT INTO SMS "
-               "(created, receiver_id, valid_until, "
+               "(created, valid_until, "
                 "reply_path_req, status_rep_req, protocol_id, "
                 "data_coding_scheme, ud_hdr_ind, "
                 "user_data, text, "
                 "dest_addr, dest_ton, dest_npi, "
                 "src_addr, src_ton, src_npi) VALUES "
-               "(datetime('now'), %llu, %u, "
+               "(datetime('now'), %u, "
                "%u, %u, %u, "
                "%u, %u, "
                "%s, %s, "
                "%s, %u, %u, "
                "%s, %u, %u)",
-               sms->receiver ? sms->receiver->id : 0, validity_timestamp,
+               validity_timestamp,
                sms->reply_path_req, sms->status_rep_req, sms->protocol_id,
                sms->data_coding_scheme, sms->ud_hdr_ind,
                q_udata, q_text,
@@ -1289,7 +1288,6 @@ int db_sms_store(struct gsm_sms *sms)
 static struct gsm_sms *sms_from_result(struct gsm_network *net, dbi_result 
result)
 {
        struct gsm_sms *sms = sms_alloc();
-       long long unsigned int receiver_id;
        const char *text, *daddr, *saddr;
        const unsigned char *user_data;
 
@@ -1298,9 +1296,6 @@ static struct gsm_sms *sms_from_result(struct gsm_network 
*net, dbi_result resul
 
        sms->id = dbi_result_get_ulonglong(result, "id");
 
-       receiver_id = dbi_result_get_ulonglong(result, "receiver_id");
-       sms->receiver = subscr_get_by_id(net, receiver_id);
-
        /* FIXME: validity */
        /* FIXME: those should all be get_uchar, but sqlite3 is braindead */
        sms->reply_path_req = dbi_result_get_uint(result, "reply_path_req");
@@ -1318,6 +1313,7 @@ static struct gsm_sms *sms_from_result(struct gsm_network 
*net, dbi_result resul
                strncpy(sms->dst.addr, daddr, sizeof(sms->dst.addr));
                sms->dst.addr[sizeof(sms->dst.addr)-1] = '\0';
        }
+       sms->receiver = subscr_get_by_extension(net, sms->dst.addr);
 
        sms->src.npi = dbi_result_get_uint(result, "src_npi");
        sms->src.ton = dbi_result_get_uint(result, "src_ton");
@@ -1372,7 +1368,7 @@ struct gsm_sms *db_sms_get_unsent(struct gsm_network 
*net, unsigned long long mi
        result = dbi_conn_queryf(conn,
                "SELECT SMS.* "
                        "FROM SMS JOIN Subscriber ON "
-                               "SMS.receiver_id = Subscriber.id "
+                               "SMS.dest_addr = Subscriber.extension "
                        "WHERE SMS.id >= %llu AND SMS.sent IS NULL "
                                "AND Subscriber.lac > 0 "
                        "ORDER BY SMS.id LIMIT 1",
@@ -1402,10 +1398,10 @@ struct gsm_sms *db_sms_get_unsent_by_subscr(struct 
gsm_network *net,
        result = dbi_conn_queryf(conn,
                "SELECT SMS.* "
                        "FROM SMS JOIN Subscriber ON "
-                               "SMS.receiver_id = Subscriber.id "
-                       "WHERE SMS.receiver_id >= %llu AND SMS.sent IS NULL "
+                               "SMS.dest_addr = Subscriber.extension "
+                       "WHERE Subscriber.id >= %llu AND SMS.sent IS NULL "
                                "AND Subscriber.lac > 0 AND 
SMS.deliver_attempts < %u "
-                       "ORDER BY SMS.receiver_id, SMS.id LIMIT 1",
+                       "ORDER BY Subscriber.id, SMS.id LIMIT 1",
                min_subscr_id, failed);
        if (!result)
                return NULL;
@@ -1431,8 +1427,8 @@ struct gsm_sms *db_sms_get_unsent_for_subscr(struct 
gsm_subscriber *subscr)
        result = dbi_conn_queryf(conn,
                "SELECT SMS.* "
                        "FROM SMS JOIN Subscriber ON "
-                               "SMS.receiver_id = Subscriber.id "
-                       "WHERE SMS.receiver_id = %llu AND SMS.sent IS NULL "
+                               "SMS.dest_addr = Subscriber.extension "
+                       "WHERE Subscriber.id = %llu AND SMS.sent IS NULL "
                                "AND Subscriber.lac > 0 "
                        "ORDER BY SMS.id LIMIT 1",
                subscr->id);
-- 
1.7.9.5


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