altair-lte: prevent connect while processing sim refresh

This patch modifies the Altair LTE plugin to fail connect requests while the
modem has detached from the network when processing sim refresh.

plugins/altair/mm-broadband-bearer-altair-lte.c

@@ -196,6 +196,20 @@ connect_3gpp (MMBroadbandBearer *self,
         return;
     }
 
+    /* Don't allow a connect while we detach from the network to process SIM
+     * refresh.
+     * */
+    if (mm_broadband_modem_altair_lte_is_sim_refresh_detach_in_progress (modem)) {
+        mm_dbg ("Detached from network to process SIM refresh, failing connect request");
+        g_simple_async_report_error_in_idle (G_OBJECT (self),
+                                             callback,
+                                             user_data,
+                                             MM_CORE_ERROR,
+                                             MM_CORE_ERROR_RETRY,
+                                             "Detached from network to process SIM refresh, can't connect.");
+        return;
+    }
+
     data = mm_base_modem_peek_best_data_port (MM_BASE_MODEM (modem), MM_PORT_TYPE_NET);
     if (!data) {
         g_simple_async_report_error_in_idle (G_OBJECT (self),

plugins/altair/mm-broadband-modem-altair-lte.c

@@ -59,6 +59,10 @@ struct _MMBroadbandModemAltairLtePrivate {
      * This indicates that there are no more SIM refreshes and we should
      * reregister the device.*/
     guint sim_refresh_timer_id;
+    /* Flag indicating that we are detaching from the network to process SIM
+     * refresh.  This is used to prevent connect requests while we're in this
+     * state.*/
+    gboolean sim_refresh_detach_in_progress;
     /* Regex for bearer related notifications */
     GRegex *statcm_regex;
     /* Regex for PCO notifications */
@@ -639,6 +643,7 @@ altair_reregister_ready (MMBaseModem *self,
     } else {
         mm_dbg ("Modem reregistered successfully");
     }
+    MM_BROADBAND_MODEM_ALTAIR_LTE (self)->priv->sim_refresh_detach_in_progress = FALSE;
 }
 
 static void
@@ -648,6 +653,7 @@ altair_deregister_ready (MMBaseModem *self,
 {
     if (!mm_base_modem_at_command_finish (self, res, NULL)) {
         mm_dbg ("Deregister modem failed");
+        MM_BROADBAND_MODEM_ALTAIR_LTE (self)->priv->sim_refresh_detach_in_progress = FALSE;
         return;
     }
 
@@ -681,6 +687,10 @@ altair_load_own_numbers_ready (MMIfaceModem *iface_modem,
         g_strfreev (str_list);
     }
 
+    /* Set this flag to prevent connect requests from being processed while we
+     * detach from the network.*/
+    self->priv->sim_refresh_detach_in_progress = TRUE;
+
     /* Deregister */
     mm_dbg ("Reregistering modem");
     mm_base_modem_at_command (
@@ -703,8 +713,8 @@ altair_sim_refresh_timer_expired (MMBroadbandModemAltairLte *self)
         MM_IFACE_MODEM (self),
         (GAsyncReadyCallback)altair_load_own_numbers_ready,
         self);
-
     self->priv->sim_refresh_timer_id = 0;
+
     return FALSE;
 }
 
@@ -1408,6 +1418,12 @@ mm_broadband_modem_altair_lte_new (const gchar *device,
                          NULL);
 }
 
+gboolean
+mm_broadband_modem_altair_lte_is_sim_refresh_detach_in_progress (MMBroadbandModem *self)
+{
+    return MM_BROADBAND_MODEM_ALTAIR_LTE (self)->priv->sim_refresh_detach_in_progress;
+}
+
 static void
 mm_broadband_modem_altair_lte_init (MMBroadbandModemAltairLte *self)
 {
@@ -1419,6 +1435,7 @@ mm_broadband_modem_altair_lte_init (MMBroadbandModemAltairLte *self)
 
     self->priv->sim_refresh_regex = g_regex_new ("\\r\\n\\%NOTIFYEV:\\s*SIMREFRESH,?(\\d*)\\r+\\n",
                                                  G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);
+    self->priv->sim_refresh_detach_in_progress = FALSE;
     self->priv->sim_refresh_timer_id = 0;
     self->priv->statcm_regex = g_regex_new ("\\r\\n\\%STATCM:\\s*(\\d*),?(\\d*)\\r+\\n",
                                             G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, NULL);

plugins/altair/mm-broadband-modem-altair-lte.h

@@ -48,4 +48,6 @@ MMBroadbandModemAltairLte *mm_broadband_modem_altair_lte_new (const gchar *devic
                                                               guint16 vendor_id,
                                                               guint16 product_id);
 
+gboolean mm_broadband_modem_altair_lte_is_sim_refresh_detach_in_progress (MMBroadbandModem *self);
+
 #endif /* MM_BROADBAND_MODEM_ALTAIR_LTE_H */