1 files changed, 89 insertions, 0 deletions
diff --git a/plugins/quectel/mm-shared-quectel.c b/plugins/quectel/mm-shared-quectel.c
index f451026b..76107e79 100644
--- a/plugins/quectel/mm-shared-quectel.c
+++ b/plugins/quectel/mm-shared-quectel.c
@@ -21,6 +21,7 @@
 #define _LIBMM_INSIDE_MM
 #include <libmm-glib.h>
 
+#include "mm-log-object.h"
 #include "mm-iface-modem-firmware.h"
 #include "mm-base-modem.h"
 #include "mm-base-modem-at.h"
@@ -72,6 +73,94 @@ mm_shared_quectel_firmware_load_update_settings (MMIfaceModemFirmware *self,
 }
 
 /*****************************************************************************/
+/* "+QUSIM: 1" URC is emitted by Quectel modems after the USIM has been
+ * (re)initialized. We register a handler for this URC and perform a check
+ * for SIM swap when it is encountered. The motivation for this is to detect
+ * M2M eUICC profile switches. According to SGP.02 chapter 3.2.1, the eUICC
+ * shall trigger a REFRESH operation with eUICC reset when a new profile is
+ * enabled. The +QUSIM URC appears after the eUICC has restarted and can act
+ * as a trigger for profile switch check. This should basically be handled
+ * the same as a physical SIM swap, so the existing SIM hot swap mechanism
+ * is used.
+ */
+
+static void
+quectel_qusim_check_for_sim_swap_ready (MMIfaceModem *self,
+                                        GAsyncResult *res)
+{
+    GError *error = NULL;
+
+    if (!MM_IFACE_MODEM_GET_INTERFACE (self)->check_for_sim_swap_finish (self, res, &error)) {
+        mm_obj_warn (self, "couldn't check SIM swap: %s", error->message);
+        g_error_free (error);
+    } else
+        mm_obj_dbg (self, "check SIM swap completed");
+}
+
+static void
+quectel_qusim_unsolicited_handler (MMPortSerialAt *port,
+                                   GMatchInfo *match_info,
+                                   MMIfaceModem* self)
+{
+    if (MM_IFACE_MODEM_GET_INTERFACE (self)->check_for_sim_swap &&
+        MM_IFACE_MODEM_GET_INTERFACE (self)->check_for_sim_swap_finish) {
+        mm_obj_dbg (self, "checking SIM swap");
+        MM_IFACE_MODEM_GET_INTERFACE (self)->check_for_sim_swap (
+            self,
+            (GAsyncReadyCallback)quectel_qusim_check_for_sim_swap_ready,
+            NULL);
+    }
+}
+
+gboolean
+mm_shared_quectel_setup_sim_hot_swap_finish (MMIfaceModem *self,
+                                             GAsyncResult *res,
+                                             GError **error)
+{
+    return g_task_propagate_boolean (G_TASK (res), error);
+}
+
+void
+mm_shared_quectel_setup_sim_hot_swap (MMIfaceModem *self,
+                                      GAsyncReadyCallback callback,
+                                      gpointer user_data)
+{
+    MMPortSerialAt *port_primary;
+    MMPortSerialAt *port_secondary;
+    GTask *task;
+    GRegex *pattern;
+
+    task = g_task_new (self, NULL, callback, user_data);
+
+    port_primary = mm_base_modem_peek_port_primary (MM_BASE_MODEM (self));
+    port_secondary = mm_base_modem_peek_port_secondary (MM_BASE_MODEM (self));
+
+    pattern = g_regex_new ("\\+QUSIM:\\s*1\\r\\n", G_REGEX_RAW, 0, NULL);
+    g_assert (pattern);
+
+    if (port_primary)
+        mm_port_serial_at_add_unsolicited_msg_handler (
+            port_primary,
+            pattern,
+            (MMPortSerialAtUnsolicitedMsgFn)quectel_qusim_unsolicited_handler,
+            self,
+            NULL);
+
+    if (port_secondary)
+        mm_port_serial_at_add_unsolicited_msg_handler (
+            port_secondary,
+            pattern,
+            (MMPortSerialAtUnsolicitedMsgFn)quectel_qusim_unsolicited_handler,
+            self,
+            NULL);
+
+    g_regex_unref (pattern);
+    mm_obj_dbg (self, "+QUSIM detection set up");
+    g_task_return_boolean (task, TRUE);
+    g_object_unref (task);
+}
+
+/*****************************************************************************/
 
 static void
 shared_quectel_init (gpointer g_iface)