nat: Inform others if an IMSI is rejected
In case one wants to monitor the access lists one
there is now a trap for the IMSI.
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat.c b/openbsc/src/osmo-bsc_nat/bsc_nat.c
index 6b061bc..2f6711a 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat.c
@@ -1060,6 +1060,8 @@
filter = bsc_nat_filter_sccp_cr(bsc, msg, parsed,
&con_type, &imsi, &cause);
if (filter < 0) {
+ if (imsi)
+ bsc_nat_inform_reject(bsc, imsi);
bsc_stat_reject(filter, bsc, 0);
goto exit3;
}
@@ -1091,6 +1093,8 @@
filter = bsc_nat_filter_dt(bsc, msg,
con, parsed, &cause);
if (filter < 0) {
+ if (imsi)
+ bsc_nat_inform_reject(bsc, imsi);
bsc_stat_reject(filter, bsc, 1);
bsc_send_con_release(bsc, con, &cause);
con = NULL;
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_ctrl.c b/openbsc/src/osmo-bsc_nat/bsc_nat_ctrl.c
index 1a45e76..6aa2ff0 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_ctrl.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat_ctrl.c
@@ -412,3 +412,21 @@
return NULL;
}
+void bsc_nat_inform_reject(struct bsc_connection *conn, const char *imsi)
+{
+ struct ctrl_cmd *cmd;
+
+ cmd = ctrl_cmd_create(conn, CTRL_TYPE_TRAP);
+ if (!cmd) {
+ LOGP(DCTRL, LOGL_ERROR, "Failed to create TRAP command.\n");
+ return;
+ }
+
+ cmd->id = "0";
+ cmd->variable = talloc_asprintf(cmd, "net.0.bsc.%d.notification-rejection-v1",
+ conn->cfg->nr);
+ cmd->reply = talloc_asprintf(cmd, "imsi=%s", imsi);
+
+ ctrl_cmd_send_to_all(conn->cfg->nat->ctrl, cmd);
+ talloc_free(cmd);
+}