From f71045b7431140f2ab069388e438fd3410711ea5 Mon Sep 17 00:00:00 2001
From: Benjamin Berg <bberg@redhat.com>
Date: Mon, 20 Apr 2020 16:39:56 +0200
Subject: [PATCH] synaptics: Use the FpPrint ID generation functionality

As the functionality is now part of the internal FpPrint API, it makes
sene to use it.
---
 libfprint/drivers/synaptics/synaptics.c | 69 +------------------------
 1 file changed, 2 insertions(+), 67 deletions(-)

diff --git a/libfprint/drivers/synaptics/synaptics.c b/libfprint/drivers/synaptics/synaptics.c
index 9007d22..25ae162 100644
--- a/libfprint/drivers/synaptics/synaptics.c
+++ b/libfprint/drivers/synaptics/synaptics.c
@@ -515,39 +515,7 @@ list_msg_cb (FpiDeviceSynaptics *self,
           g_object_set (print, "fpi-data", data, NULL);
           g_object_set (print, "description", get_enroll_templates_resp->templates[n].user_id, NULL);
 
-          /* The format has 24 bytes at the start and some dashes in the right places */
-          if (g_str_has_prefix (userid, "FP1-") && strlen (userid) >= 24 &&
-              userid[12] == '-' && userid[14] == '-' && userid[23] == '-')
-            {
-              g_autofree gchar *copy = g_strdup (userid);
-              g_autoptr(GDate) date = NULL;
-              gint32 date_ymd;
-              gint32 finger;
-              gchar *username;
-              /* Try to parse information from the string. */
-
-              copy[12] = '\0';
-              date_ymd = g_ascii_strtod (copy + 4, NULL);
-              if (date_ymd > 0)
-                date = g_date_new_dmy (date_ymd % 100,
-                                       (date_ymd / 100) % 100,
-                                       date_ymd / 10000);
-              else
-                date = g_date_new ();
-
-              fp_print_set_enroll_date (print, date);
-
-              copy[14] = '\0';
-              finger = g_ascii_strtoll (copy + 13, NULL, 16);
-              fp_print_set_finger (print, finger);
-
-              /* We ignore the next chunk, it is just random data.
-               * Then comes the username; nobody is the default if the metadata
-               * is unknown */
-              username = copy + 24;
-              if (strlen (username) > 0 && g_strcmp0 (username, "nobody") != 0)
-                fp_print_set_username (print, username);
-            }
+          fpi_print_fill_from_user_id (print, userid);
 
           g_ptr_array_add (self->list_result, g_object_ref_sink (print));
         }
@@ -795,8 +763,6 @@ enroll_msg_cb (FpiDeviceSynaptics *self,
     }
 }
 
-#define TEMPLATE_ID_SIZE 20
-
 static void
 enroll (FpDevice *device)
 {
@@ -804,47 +770,16 @@ enroll (FpDevice *device)
   FpPrint *print = NULL;
   GVariant *data = NULL;
   GVariant *uid = NULL;
-  const gchar *username;
   guint finger;
   g_autofree gchar *user_id = NULL;
   gssize user_id_len;
   g_autofree guint8 *payload = NULL;
-  const GDate *date;
-  gint y, m, d;
-  gint32 rand_id = 0;
 
   fpi_device_get_enroll_data (device, &print);
 
   G_DEBUG_HERE ();
 
-  date = fp_print_get_enroll_date (print);
-  if (date && g_date_valid (date))
-    {
-      y = g_date_get_year (date);
-      m = g_date_get_month (date);
-      d = g_date_get_day (date);
-    }
-  else
-    {
-      y = 0;
-      m = 0;
-      d = 0;
-    }
-
-  username = fp_print_get_username (print);
-  if (!username)
-    username = "nobody";
-
-  if (g_strcmp0 (g_getenv ("FP_DEVICE_EMULATION"), "1") == 0)
-    rand_id = 0;
-  else
-    rand_id = g_random_int ();
-
-  user_id = g_strdup_printf ("FP1-%04d%02d%02d-%X-%08X-%s",
-                             y, m, d,
-                             fp_print_get_finger (print),
-                             rand_id,
-                             username);
+  user_id = fpi_print_generate_user_id (print);
 
   user_id_len = strlen (user_id);
   user_id_len = MIN (BMKT_MAX_USER_ID_LEN, user_id_len);