Add userpref helper to allow removal of the stored device public key

1 files changed, 24 insertions, 0 deletions

diff --git a/src/userpref.c b/src/userpref.c
index 10c14a0..09ec495 100644
--- a/src/userpref.c
+++ b/src/userpref.c
@@ -212,6 +212,30 @@ userpref_error_t userpref_set_device_public_key(const char *uuid, gnutls_datum_t
         return USERPREF_E_SUCCESS;
 }
 
+/** Remove the public key stored for the device with uuid from this host.
+ *
+ * @param uuid The uuid of the device
+ *
+ * @return USERPREF_E_SUCCESS on success.
+ */
+userpref_error_t userpref_remove_device_public_key(const char *uuid)
+{
+        if (!userpref_has_device_public_key(uuid))
+                return USERPREF_E_SUCCESS;
+
+        /* build file path */
+        gchar *device_file = g_strconcat(uuid, ".pem", NULL);
+        gchar *pem = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), LIBIPHONE_CONF_DIR, device_file, NULL);
+
+        /* remove file */
+        g_remove(pem);
+
+        g_free(pem);
+        g_free(device_file);
+
+        return USERPREF_E_SUCCESS;
+}
+
 /** Private function which reads the given file into a gnutls structure.
  *
  * @param file The filename of the file to read