populate gsm_subscriber_connection->encr during Ciph
The gsm_subscriber_connection->encr is never used. Use it.
When sending the Ciphering Mode Command, populate the encryption key.
When receivint the Ciphering Mode Complete, populate the chosen alg_id.
Out of paranoia, store the enc key only if the size is large enough.
Hence the vty_dump_one_conn() now reports the actually chosen A5 algorithm ID
used.
For 3G connections, though, this will still remain 0 in the VTY, since there is
no explicit A5 algorithm negotiated on UTRAN. (Security Mode Command and
Security Mode Complete instead of the GERAN Ciphering.)
(Note, 'struct gsm_encr encr' will be renamed to 'struct geran_encr geran_encr'
in Idc7ca9da1aa13ae16f5db2cb1024676cbc770820)
Change-Id: Ice2c470c360612249f97301944c6fdf9443c7dce
diff --git a/src/libmsc/osmo_msc.c b/src/libmsc/osmo_msc.c
index f2c84e6..e3d7055 100644
--- a/src/libmsc/osmo_msc.c
+++ b/src/libmsc/osmo_msc.c
@@ -222,6 +222,8 @@
}
}
+ conn->encr.alg_id = alg_id;
+
ciph_res.cause = VLR_CIPH_COMPL;
vlr_subscr_rx_ciph_res(conn->vsub, &ciph_res);
}