android: Store remote's Identity Resolving Key

Persistent storage is used so we can load IRKs on startup.

diff --git a/android/bluetooth.c b/android/bluetooth.c
index 36b073e..fcac1b5 100644 (file)
--- a/android/bluetooth.c
+++ b/android/bluetooth.c
@@ -1964,6 +1964,62 @@ static void new_csrk_callback(uint16_t index, uint16_t length,
                store_csrk(dev);
 }
 
+static void store_irk(struct device *dev, const uint8_t *val)
+{
+       GKeyFile *key_file;
+       char key_str[33];
+       char addr[18];
+       int i;
+       gsize length = 0;
+       char *data;
+
+       ba2str(&dev->bdaddr, addr);
+
+       key_file = g_key_file_new();
+       if (!g_key_file_load_from_file(key_file, DEVICES_FILE, 0, NULL)) {
+               g_key_file_free(key_file);
+               return;
+       }
+
+       for (i = 0; i < 16; i++)
+               sprintf(key_str + (i * 2), "%2.2X", val[i]);
+
+       g_key_file_set_string(key_file, addr, "IdentityResolvingKey", key_str);
+
+       data = g_key_file_to_data(key_file, &length, NULL);
+       g_file_set_contents(DEVICES_FILE, data, length, NULL);
+       g_free(data);
+
+       g_key_file_free(key_file);
+}
+
+static void new_irk_callback(uint16_t index, uint16_t length,
+                                       const void *param, void *user_data)
+{
+       const struct mgmt_ev_new_irk *ev = param;
+       const struct mgmt_addr_info *addr = &ev->key.addr;
+       struct device *dev;
+       char dst[18], rpa[18];
+
+       if (length < sizeof(*ev)) {
+               error("To small New Irk Event (%u bytes)", length);
+               return;
+       }
+
+       ba2str(&ev->key.addr.bdaddr, dst);
+       ba2str(&ev->rpa, rpa);
+
+       DBG("new IRK for %s, RPA %s", dst, rpa);
+
+       /* TODO: handle new Identity to RPA mapping */
+       dev = find_device(&addr->bdaddr);
+       if (!dev)
+               return;
+
+       if (ev->store_hint)
+               store_irk(dev, ev->key.val);
+}
+
 static void register_mgmt_handlers(void)
 {
        mgmt_register(mgmt_if, MGMT_EV_NEW_SETTINGS, adapter.index,
@@ -2017,6 +2073,8 @@ static void register_mgmt_handlers(void)
        mgmt_register(mgmt_if, MGMT_EV_NEW_CSRK, adapter.index,
                                                new_csrk_callback, NULL, NULL);
 
+       mgmt_register(mgmt_if, MGMT_EV_NEW_IRK, adapter.index, new_irk_callback,
+                                                               NULL, NULL);
 }
 
 static void load_link_keys_complete(uint8_t status, uint16_t length,