UMTS AKA: implement SQN increment according to SEQ and IND
Add ind_bitlen column to auc_3g to record each USIM's IND size according to
3GPP TS 33.102 -- default is 5 bits, as suggested by the spec.
Introduce auc_3g_ind to each connecting GSUP client to use as IND index for
generating auth tuples sent to this client.
With osmo_gsup_server_add_conn(), implement a scheme where clients receive
fixed auc_3g_ind indexes based on the order in which they connect; each new
connection takes the lowest unused auc_3g_ind, so in case one of the clients
restarts, it will most likely receive the same auc_3g_ind, and if one client
disconnects, no other clients' auc_3g_ind are affected.
Add gsup_server_test.c to test the auc_3g_ind index distribution scheme.
Depends: libosmocore I4eac5be0c0b2cede04464c4c3a0873102d952453 for llist_first
Related: OS#1969
Change-Id: If4501ed4ff8e923fa6fe8b80c44c5ad647a8ed60
diff --git a/src/db.c b/src/db.c
index aa4726c..aaf6fe2 100644
--- a/src/db.c
+++ b/src/db.c
@@ -29,7 +29,7 @@
[SEL_BY_IMSI] = "SELECT id,imsi,msisdn,vlr_number,sgsn_number,sgsn_address,periodic_lu_tmr,periodic_rau_tau_tmr,nam_cs,nam_ps,lmsi,ms_purged_cs,ms_purged_ps FROM subscriber WHERE imsi = ?",
[UPD_VLR_BY_ID] = "UPDATE subscriber SET vlr_number = ? WHERE id = ?",
[UPD_SGSN_BY_ID] = "UPDATE subscriber SET sgsn_number = ? WHERE id = ?",
- [AUC_BY_IMSI] = "SELECT id, algo_id_2g, ki, algo_id_3g, k, op, opc, sqn FROM subscriber LEFT JOIN auc_2g ON auc_2g.subscriber_id = subscriber.id LEFT JOIN auc_3g ON auc_3g.subscriber_id = subscriber.id WHERE imsi = ?",
+ [AUC_BY_IMSI] = "SELECT id, algo_id_2g, ki, algo_id_3g, k, op, opc, sqn, ind_bitlen FROM subscriber LEFT JOIN auc_2g ON auc_2g.subscriber_id = subscriber.id LEFT JOIN auc_3g ON auc_3g.subscriber_id = subscriber.id WHERE imsi = ?",
[AUC_UPD_SQN] = "UPDATE auc_3g SET sqn = ? WHERE subscriber_id = ?",
[UPD_PURGE_CS_BY_IMSI] = "UPDATE subscriber SET ms_purged_cs=1 WHERE imsi = ?",
[UPD_PURGE_PS_BY_IMSI] = "UPDATE subscriber SET ms_purged_ps=1 WHERE imsi = ?",