Add "silent call" feature to OpenBSC
This allows the administrator to use the vty interface to issue a silent
call to a given subscriber by using
"subscriber extension XXXX silent call start"
and stopping that silent call with
"subscriber extension XXXX silent call stop"
diff --git a/openbsc/src/vty_interface_layer3.c b/openbsc/src/vty_interface_layer3.c
index 53b5960..124a368 100644
--- a/openbsc/src/vty_interface_layer3.c
+++ b/openbsc/src/vty_interface_layer3.c
@@ -38,6 +38,7 @@
#include <openbsc/gsm_utils.h>
#include <openbsc/db.h>
#include <openbsc/talloc.h>
+#include <openbsc/signal.h>
/* forward declarations */
void subscr_dump_vty(struct vty *vty, struct gsm_subscriber *subscr);
@@ -55,7 +56,6 @@
return CMD_SUCCESS;
}
-
static struct buffer *argv_to_buffer(int argc, const char *argv[], int base)
{
struct buffer *b = buffer_new(1024);
@@ -259,6 +259,38 @@
return rc;
}
+DEFUN(subscriber_silent_call,
+ subscriber_silent_call_cmd,
+ "subscriber " SUBSCR_TYPES " EXTEN silent call (start|stop)",
+ "Send a silent call to a subscriber")
+{
+ struct gsm_subscriber *subscr = get_subscr_by_argv(argv[0], argv[1]);
+ int rc;
+
+ if (!subscr) {
+ vty_out(vty, "%% No subscriber found for %s %s%s",
+ argv[0], argv[1]);
+ return CMD_WARNING;
+ }
+
+ if (!strcmp(argv[2], "start")) {
+ rc = gsm_silent_call_start(subscr, vty);
+ if (rc <= 0) {
+ vty_out(vty, "%% Subscriber not attached%s",
+ VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+ } else {
+ rc = gsm_silent_call_stop(subscr);
+ if (rc < 0)
+ return CMD_WARNING;
+ }
+
+ subscr_put(subscr);
+
+ return CMD_SUCCESS;
+}
+
DEFUN(cfg_subscr_name,
cfg_subscr_name_cmd,
"name NAME",
@@ -307,10 +339,31 @@
return CMD_SUCCESS;
}
+static int scall_cbfn(unsigned int subsys, unsigned int signal,
+ void *handler_data, void *signal_data)
+{
+ struct scall_signal_data *sigdata = signal_data;
+ struct vty *vty = sigdata->data;
+
+ switch (signal) {
+ case S_SCALL_SUCCESS:
+ vty_out(vty, "%% silent call on ARFCN %u timeslot %u%s",
+ sigdata->lchan->ts->trx->arfcn, sigdata->lchan->ts->nr,
+ VTY_NEWLINE);
+ break;
+ case S_SCALL_EXPIRED:
+ vty_out(vty, "%% silent call expired paging%s", VTY_NEWLINE);
+ break;
+ }
+ return 0;
+}
+
int bsc_vty_init_extra(struct gsm_network *net)
{
gsmnet = net;
+ register_signal_handler(SS_SCALL, scall_cbfn, NULL);
+
install_element(VIEW_NODE, &show_subscr_cmd);
install_element(VIEW_NODE, &show_subscr_cache_cmd);
@@ -318,6 +371,7 @@
install_element(VIEW_NODE, &subscriber_send_sms_cmd);
install_element(VIEW_NODE, &subscriber_silent_sms_cmd);
+ install_element(VIEW_NODE, &subscriber_silent_call_cmd);
install_element(CONFIG_NODE, &cfg_subscr_cmd);
install_node(&subscr_node, dummy_config_write);