WIP: shut-up uncrustify

Has 2 variants, one that supports identify, one that doesn't.

The mode of operation for this device is:
- Run fprintd with "FP_VIRTUAL_DEVICE=/tmp/fprint.socket"
- As root:
FP_VIRTUAL_DEVICE=/tmp/fprint.socket ./sendvirtcmd.py "ADD left-middle testuser success"
FP_VIRTUAL_DEVICE=/tmp/fprint.socket ./sendvirtcmd.py "ADD right-middle testuser failure"
- As testuser:
fprintd-enroll -f left-middle-finger
fprintd-enroll -f right-middle-finger

Now, across fprintd restarts (as it has its own storage), verification
will always succeed for user "testuser" with the "left-middle-finger".

Using the FP_VIRTUAL_DEVICE_IDENT envvar instead will allow
identification, with the first found "successful" finger being presented
as the identified one.

.gitlab-ci.yml

@@ -6,9 +6,9 @@ include:
 
 variables:
   extends: .libfprint_common_variables
-  FEDORA_TAG: rawhide
-  FEDORA_VERSION: rawhide
-  FEDORA_IMAGE: "$CI_REGISTRY/libfprint/$CI_PROJECT_NAME/fedora/$FEDORA_VERSION:$FEDORA_TAG"
+  FDO_DISTRIBUTION_TAG: latest
+  FDO_DISTRIBUTION_VERSION: rawhide
+  FEDORA_IMAGE: "$CI_REGISTRY/libfprint/$CI_PROJECT_NAME/fedora/$FDO_DISTRIBUTION_VERSION:$FDO_DISTRIBUTION_TAG"
   BUNDLE: "org.freedesktop.libfprint.Demo.flatpak"
   LAST_ABI_BREAK: "056ea541ddc97f5806cffbd99a12dc87e4da3546"
 
@@ -16,7 +16,7 @@ stages:
   - check-source
   - build
   - test
-  - flatpack
+  - flatpak
 
 image: "$FEDORA_IMAGE"
 
@@ -59,6 +59,7 @@ test:
     - ninja -C _build
     - meson test -C _build --verbose --no-stdsplit --timeout-multiplier 3
     - ninja -C _build coverage
+    - cat _build/meson-logs/coverage.txt
   artifacts:
     paths:
       - _build/meson-logs
@@ -107,7 +108,7 @@ test_indent:
 
 .flatpak_master_template: &flatpak_master
     image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:3.32
-    stage: flatpack
+    stage: flatpak
     variables:
         MANIFEST_PATH: "demo/org.freedesktop.libfprint.Demo.json"
         # From demo/org.freedesktop.libfprint.Demo.json
@@ -135,11 +136,11 @@ flatpak-manual master:
 
 # CONTAINERS creation stage
 container_fedora_build:
-  extends: .fedora@container-build
+  extends: .fdo.container-build@fedora
   only:
     variables:
       - $CI_PIPELINE_SOURCE == "schedule" && $CRON_TASK == "BUILD_CI_IMAGES"
   variables:
     GIT_STRATEGY: none # no need to pull the whole tree for rebuilding the image
     # a list of packages to install
-    FEDORA_RPMS: $LIBFPRINT_DEPENDENCIES
+    FDO_DISTRIBUTION_PACKAGES: $LIBFPRINT_DEPENDENCIES

doc/libfprint-sections.txt

@@ -207,6 +207,8 @@ fpi_print_set_type
 fpi_print_set_device_stored
 fpi_print_add_from_image
 fpi_print_bz3_match
+fpi_print_generate_user_id
+fpi_print_fill_from_user_id
 </SECTION>
 
 <SECTION>

examples/enroll.c

@@ -1,6 +1,6 @@
 /*
  * Example fingerprint enrollment program
- * Enrolls your choosen finger and saves the print to disk
+ * Enrolls your chosen finger and saves the print to disk
  * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
  * Copyright (C) 2019 Marco Trevisan <marco.trevisan@canonical.com>
  *
@@ -23,20 +23,25 @@
 
 #include <stdio.h>
 #include <libfprint/fprint.h>
+#include <glib-unix.h>
 
 #include "storage.h"
 #include "utilities.h"
 
 typedef struct _EnrollData
 {
-  GMainLoop *loop;
-  FpFinger   finger;
-  int        ret_value;
+  GMainLoop    *loop;
+  GCancellable *cancellable;
+  unsigned int  sigint_handler;
+  FpFinger      finger;
+  int           ret_value;
 } EnrollData;
 
 static void
 enroll_data_free (EnrollData *enroll_data)
 {
+  g_clear_handle_id (&enroll_data->sigint_handler, g_source_remove);
+  g_clear_object (&enroll_data->cancellable);
   g_main_loop_unref (enroll_data->loop);
   g_free (enroll_data);
 }
@@ -137,11 +142,22 @@ on_device_opened (FpDevice *dev, GAsyncResult *res, void *user_data)
   printf ("Scan your finger now.\n");
 
   print_template = print_create_template (dev, enroll_data->finger);
-  fp_device_enroll (dev, print_template, NULL, on_enroll_progress, NULL,
-                    NULL, (GAsyncReadyCallback) on_enroll_completed,
+  fp_device_enroll (dev, print_template, enroll_data->cancellable,
+                    on_enroll_progress, NULL, NULL,
+                    (GAsyncReadyCallback) on_enroll_completed,
                     enroll_data);
 }
 
+static gboolean
+sigint_cb (void *user_data)
+{
+  EnrollData *enroll_data = user_data;
+
+  g_cancellable_cancel (enroll_data->cancellable);
+
+  return G_SOURCE_CONTINUE;
+}
+
 int
 main (void)
 {
@@ -188,8 +204,15 @@ main (void)
   enroll_data->finger = finger;
   enroll_data->ret_value = EXIT_FAILURE;
   enroll_data->loop = g_main_loop_new (NULL, FALSE);
+  enroll_data->cancellable = g_cancellable_new ();
+  enroll_data->sigint_handler = g_unix_signal_add_full (G_PRIORITY_HIGH,
+                                                        SIGINT,
+                                                        sigint_cb,
+                                                        enroll_data,
+                                                        NULL);
 
-  fp_device_open (dev, NULL, (GAsyncReadyCallback) on_device_opened,
+  fp_device_open (dev, enroll_data->cancellable,
+                  (GAsyncReadyCallback) on_device_opened,
                   enroll_data);
 
   g_main_loop_run (enroll_data->loop);

examples/sendvirtcmd.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+
+# This script can be used together with the virtual_imgdev to simulate an
+# image based fingerprint reader.
+#
+# To use, set the FP_VIRTUAL_IMAGE environment variable for both the
+# libfprint using program (e.g. fprintd) and this script.
+#
+# Usually this would work by adding it into the systemd unit file. The
+# best way of doing so is to create
+#  /etc/systemd/system/fprintd.service.d/fprintd-test.conf
+#
+# [Service]
+# RuntimeDirectory=fprint
+# Environment=FP_VIRTUAL_DEVICE=/run/fprint/virtdev_sock
+# Environment=G_MESSAGES_DEBUG=all
+# ReadWritePaths=$RUNTIME_DIR
+#
+# After that run:
+#
+#   systemctl daemon-reload
+#   systemctl restart fprintd.service
+#
+# You may also need to disable selinux.
+#
+# Then run this script with e.g.
+# FP_VIRTUAL_DEVICE=/run/fprint/virtdev_sock ./sendvirtimg.py "ADD <username> <finger> <success|failure>"
+
+
+
+import cairo
+import sys
+import os
+import socket
+import struct
+
+if len(sys.argv) != 2:
+    sys.stderr.write('You need to pass commands!\n')
+    sys.stderr.write('Usage: ./sendvirtimg.py "ADD <finger> <username> <success|failure>"\n')
+    sys.exit(1)
+
+command = sys.argv[1]
+
+# Send image through socket
+sockaddr = os.environ['FP_VIRTUAL_DEVICE']
+if not sockaddr:
+    sockaddr = os.environ['FP_VIRTUAL_DEVICE_IDENT']
+
+sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+sock.connect(sockaddr)
+
+sock.sendall(command.encode('utf-8'))
+

examples/verify.c

@@ -23,20 +23,25 @@
 
 #include <stdio.h>
 #include <libfprint/fprint.h>
+#include <glib-unix.h>
 
 #include "storage.h"
 #include "utilities.h"
 
 typedef struct _VerifyData
 {
-  GMainLoop *loop;
-  FpFinger   finger;
-  int        ret_value;
+  GMainLoop    *loop;
+  GCancellable *cancellable;
+  unsigned int  sigint_handler;
+  FpFinger      finger;
+  int           ret_value;
 } VerifyData;
 
 static void
 verify_data_free (VerifyData *verify_data)
 {
+  g_clear_handle_id (&verify_data->sigint_handler, g_source_remove);
+  g_clear_object (&verify_data->cancellable);
   g_main_loop_unref (verify_data->loop);
   g_free (verify_data);
 }
@@ -196,7 +201,7 @@ on_list_completed (FpDevice *dev, GAsyncResult *res, gpointer user_data)
                fp_print_get_description (verify_print));
 
       g_print ("Print loaded. Time to verify!\n");
-      fp_device_verify (dev, verify_print, NULL,
+      fp_device_verify (dev, verify_print, verify_data->cancellable,
                         on_match_cb, verify_data, NULL,
                         (GAsyncReadyCallback) on_verify_completed,
                         verify_data);
@@ -250,7 +255,7 @@ start_verification (FpDevice *dev, VerifyData *verify_data)
         }
 
       g_print ("Print loaded. Time to verify!\n");
-      fp_device_verify (dev, verify_print, NULL,
+      fp_device_verify (dev, verify_print, verify_data->cancellable,
                         NULL, NULL, NULL,
                         (GAsyncReadyCallback) on_verify_completed,
                         verify_data);
@@ -276,6 +281,16 @@ on_device_opened (FpDevice *dev, GAsyncResult *res, void *user_data)
   start_verification (dev, verify_data);
 }
 
+static gboolean
+sigint_cb (void *user_data)
+{
+  VerifyData *verify_data = user_data;
+
+  g_cancellable_cancel (verify_data->cancellable);
+
+  return G_SOURCE_CONTINUE;
+}
+
 int
 main (void)
 {
@@ -306,8 +321,14 @@ main (void)
   verify_data = g_new0 (VerifyData, 1);
   verify_data->ret_value = EXIT_FAILURE;
   verify_data->loop = g_main_loop_new (NULL, FALSE);
-
-  fp_device_open (dev, NULL, (GAsyncReadyCallback) on_device_opened,
+  verify_data->cancellable = g_cancellable_new ();
+  verify_data->sigint_handler = g_unix_signal_add_full (G_PRIORITY_HIGH,
+                                                        SIGINT,
+                                                        sigint_cb,
+                                                        verify_data,
+                                                        NULL);
+  fp_device_open (dev, verify_data->cancellable,
+                  (GAsyncReadyCallback) on_device_opened,
                   verify_data);
 
   g_main_loop_run (verify_data->loop);

libfprint/drivers/aes1610.c

@@ -138,7 +138,7 @@ generic_read_ignore_data (FpiSsm *ssm, FpDevice *dev,
   unsigned char *data;
 
   data = g_malloc (bytes);
-  fpi_usb_transfer_fill_bulk_full (transfer, EP_IN, data, bytes, NULL);
+  fpi_usb_transfer_fill_bulk_full (transfer, EP_IN, data, bytes, g_free);
   transfer->ssm = ssm;
   transfer->short_is_error = TRUE;
   fpi_usb_transfer_submit (transfer, BULK_TIMEOUT, NULL,

libfprint/drivers/elan.c

@@ -733,7 +733,7 @@ calibrate_run_state (FpiSsm *ssm, FpDevice *dev)
           fp_dbg ("calibration failed");
           fpi_ssm_mark_failed (ssm,
                                fpi_device_error_new_msg (FP_DEVICE_ERROR_GENERAL,
-                                                         "Callibration failed!"));
+                                                         "Calibration failed!"));
         }
       break;
 

libfprint/drivers/etes603.c

@@ -859,21 +859,29 @@ m_capture_state (FpiSsm *ssm, FpDevice *dev)
         }
       else
         {
-          FpImage *img;
-          unsigned int img_size;
           /* Remove empty parts 2 times for the 2 frames */
           process_removefpi_end (self);
           process_removefpi_end (self);
-          img_size = self->fp_height * FE_WIDTH;
-          img = fp_image_new (FE_WIDTH, self->fp_height);
-          /* Images received are white on black, so invert it. */
-          /* TODO detect sweep direction */
-          img->flags = FPI_IMAGE_COLORS_INVERTED | FPI_IMAGE_V_FLIPPED;
-          img->height = self->fp_height;
-          process_4to8_bpp (self->fp, img_size / 2, img->data);
-          fp_dbg ("Sending the raw fingerprint image (%dx%d)",
-                  img->width, img->height);
-          fpi_image_device_image_captured (idev, img);
+
+          if (self->fp_height >= FE_WIDTH)
+            {
+              FpImage *img = fp_image_new (FE_WIDTH, self->fp_height);
+              unsigned int img_size = self->fp_height * FE_WIDTH;
+
+              /* Images received are white on black, so invert it. */
+              /* TODO detect sweep direction */
+              img->flags = FPI_IMAGE_COLORS_INVERTED | FPI_IMAGE_V_FLIPPED;
+              img->height = self->fp_height;
+              process_4to8_bpp (self->fp, img_size / 2, img->data);
+              fp_dbg ("Sending the raw fingerprint image (%dx%d)",
+                      img->width, img->height);
+              fpi_image_device_image_captured (idev, img);
+            }
+          else
+            {
+              fpi_image_device_retry_scan (idev, FP_DEVICE_RETRY_TOO_SHORT);
+            }
+
           fpi_image_device_report_finger_status (idev, FALSE);
           fpi_ssm_mark_completed (ssm);
         }

libfprint/drivers/synaptics/bmkt_response.h

@@ -316,7 +316,7 @@ typedef struct bmkt_init_resp
  */
 typedef struct bmkt_enroll_resp
 {
-  int     progress;                             /**< Shows current progress stutus [0-100] */
+  int     progress;                             /**< Shows current progress status [0-100] */
   uint8_t finger_id;                            /**< User's finger id [1-10] */
   uint8_t user_id[BMKT_MAX_USER_ID_LEN];        /**< User name to be enrolled */
 } bmkt_enroll_resp_t;

libfprint/drivers/synaptics/synaptics.c

@@ -35,7 +35,7 @@ static const FpIdEntry id_table[] = {
 
 
 static void
-cmd_recieve_cb (FpiUsbTransfer *transfer,
+cmd_receive_cb (FpiUsbTransfer *transfer,
                 FpDevice       *device,
                 gpointer        user_data,
                 GError         *error)
@@ -234,7 +234,7 @@ synaptics_cmd_run_state (FpiSsm   *ssm,
       fpi_usb_transfer_submit (transfer,
                                5000,
                                NULL,
-                               cmd_recieve_cb,
+                               cmd_receive_cb,
                                fpi_ssm_get_data (ssm));
 
       break;
@@ -321,7 +321,7 @@ synaptics_sensor_cmd (FpiDeviceSynaptics *self,
   g_assert (payload || payload_len == 0);
 
   /* seq_num of 0 means a normal command, -1 means the current commands
-   * sequence number should not be udpated (i.e. second async command which
+   * sequence number should not be updated (i.e. second async command which
    * may only be a cancellation currently). */
   if (seq_num <= 0)
     {
@@ -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));
         }
@@ -635,7 +603,7 @@ verify_msg_cb (FpiDeviceSynaptics *self,
       else if (resp->result == BMKT_FP_NO_MATCH)
         {
           fp_info ("Print didn't match");
-          fpi_device_verify_report (device, FPI_MATCH_FAIL, NULL, error);
+          fpi_device_verify_report (device, FPI_MATCH_FAIL, NULL, NULL);
           verify_complete_after_finger_removal (self);
         }
       else if (resp->result == BMKT_FP_DATABASE_NO_RECORD_EXISTS)
@@ -730,7 +698,7 @@ enroll_msg_cb (FpiDeviceSynaptics *self,
         if (enroll_resp->progress < 100)
           done_stages = MIN (done_stages, ENROLL_SAMPLES - 1);
 
-        /* Emit a retry error if there has been no discernable
+        /* Emit a retry error if there has been no discernible
          * progress. Some firmware revisions report more required
          * touches. */
         if (self->enroll_stage == done_stages)
@@ -795,8 +763,6 @@ enroll_msg_cb (FpiDeviceSynaptics *self,
     }
 }
 
-#define TEMPLATE_ID_SIZE 20
-
 static void
 enroll (FpDevice *device)
 {
@@ -804,52 +770,21 @@ 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);
 
-  /* We currently always use finger 1 from the devices piont of view */
+  /* We currently always use finger 1 from the devices point of view */
   finger = 1;
 
   uid = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
@@ -1029,7 +964,7 @@ dev_probe (FpDevice *device)
 
   if (!read_ok)
     {
-      g_warning ("Transfer in response to verison query was too short");
+      g_warning ("Transfer in response to version query was too short");
       error = fpi_device_error_new (FP_DEVICE_ERROR_PROTO);
       goto err_close;
     }

libfprint/drivers/upekts.c

@@ -1119,7 +1119,6 @@ e_handle_resp02 (FpDevice *dev, unsigned char *data,
   else
     {
       GVariant *fp_data;
-      print = fp_print_new (dev);
 
       fpi_device_get_enroll_data (dev, &print);
 

libfprint/drivers/vfs0050.c

@@ -119,7 +119,7 @@ async_abort_callback (FpiUsbTransfer *transfer, FpDevice *device,
   /* In normal case endpoint is empty */
   if (g_error_matches (error, G_USB_DEVICE_ERROR, G_USB_DEVICE_ERROR_TIMED_OUT))
     {
-      g_free (error);
+      g_error_free (error);
       fpi_ssm_next_state (transfer->ssm);
       return;
     }

libfprint/drivers/virtual-device.c

@@ -0,0 +1,456 @@
+/*
+ * Virtual driver for "simple" device debugging
+ *
+ * Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
+ * Copyright (C) 2020 Bastien Nocera <hadess@hadess.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * This is a virtual driver to debug the non-image based drivers. A small
+ * python script is provided to connect to it via a socket, allowing
+ * prints to registered programmatically.
+ * Using this, it is possible to test libfprint and fprintd.
+ */
+
+#define FP_COMPONENT "virtual_device"
+
+#include "fpi-log.h"
+
+#include "../fpi-device.h"
+
+#include <glib/gstdio.h>
+#include <gio/gio.h>
+#include <gio/gunixsocketaddress.h>
+
+#define MAX_LINE_LEN 1024
+
+enum {
+  VIRTUAL_DEVICE,
+  VIRTUAL_DEVICE_IDENT
+};
+
+struct _FpDeviceVirtualDevice
+{
+  FpDevice           parent;
+
+  GSocketListener   *listener;
+  GSocketConnection *connection;
+  GCancellable      *cancellable;
+
+  gint               socket_fd;
+  gint               client_fd;
+  guint              line[MAX_LINE_LEN];
+
+  GHashTable        *pending_prints; /* key: finger+username value: gboolean */
+};
+
+G_DECLARE_FINAL_TYPE (FpDeviceVirtualDevice, fpi_device_virtual_device, FP, DEVICE_VIRTUAL_DEVICE, FpDevice)
+G_DEFINE_TYPE (FpDeviceVirtualDevice, fpi_device_virtual_device, FP_TYPE_DEVICE)
+
+static void start_listen (FpDeviceVirtualDevice *self);
+
+#define ADD_CMD_PREFIX "ADD "
+
+static FpFinger
+str_to_finger (const char *str)
+{
+  g_autoptr(GEnumClass) eclass;
+  GEnumValue *value;
+
+  eclass = g_type_class_ref (FP_TYPE_FINGER);
+  value = g_enum_get_value_by_nick (eclass, str);
+
+  if (value == NULL)
+    return FP_FINGER_UNKNOWN;
+
+  return value->value;
+}
+
+static const char *
+finger_to_str (FpFinger finger)
+{
+  GEnumClass *eclass;
+  GEnumValue *value;
+
+  eclass = g_type_class_ref (FP_TYPE_FINGER);
+  value = g_enum_get_value (eclass, finger);
+  g_type_class_unref (eclass);
+
+  if (value == NULL)
+    return NULL;
+
+  return value->value_nick;
+}
+
+static gboolean
+parse_code (const char *str)
+{
+  if (g_strcmp0 (str, "1") == 0 ||
+      g_strcmp0 (str, "success") == 0 ||
+      g_strcmp0 (str, "SUCCESS") == 0 ||
+      g_strcmp0 (str, "FPI_MATCH_SUCCESS") == 0)
+    return FPI_MATCH_SUCCESS;
+
+  return FPI_MATCH_FAIL;
+}
+
+static void
+handle_command_line (FpDeviceVirtualDevice *self,
+                     const char            *line)
+{
+  if (g_str_has_prefix (line, ADD_CMD_PREFIX))
+    {
+      g_auto(GStrv) elems;
+      FpPrint *print;
+      FpFinger finger;
+      gboolean success;
+      g_autofree char *description = NULL;
+      char *key;
+
+      /* Syntax: ADD <finger> <username> <error when used> */
+      elems = g_strsplit (line + strlen (ADD_CMD_PREFIX), " ", 3);
+      if (g_strv_length (elems) != 3)
+        {
+          g_warning ("Malformed command: %s", line);
+          return;
+        }
+      finger = str_to_finger (elems[0]);
+      if (finger == FP_FINGER_UNKNOWN)
+        {
+          g_warning ("Unknown finger '%s'", elems[0]);
+          return;
+        }
+      print = fp_print_new (FP_DEVICE (self));
+      fp_print_set_finger (print, finger);
+      fp_print_set_username (print, elems[1]);
+      description = g_strdup_printf ("Fingerprint finger '%s' for user '%s'",
+                                     elems[0], elems[1]);
+      fp_print_set_description (print, description);
+      success = parse_code (elems[2]);
+
+      key = g_strdup_printf ("%s-%s", elems[0], elems[1]);
+      g_hash_table_insert (self->pending_prints,
+                           key, GINT_TO_POINTER (success));
+
+      fp_dbg ("Added pending print %s for user %s (code: %s)",
+              elems[0], elems[1], success ? "FPI_MATCH_SUCCESS" : "FPI_MATCH_FAIL");
+    }
+  else
+    {
+      g_warning ("Unhandled command sent: '%s'", line);
+    }
+}
+
+static void
+recv_instruction_cb (GObject      *source_object,
+                     GAsyncResult *res,
+                     gpointer      user_data)
+{
+  g_autoptr(GError) error = NULL;
+  FpDeviceVirtualDevice *self;
+  gboolean success;
+  gsize bytes;
+
+  success = g_input_stream_read_all_finish (G_INPUT_STREAM (source_object), res, &bytes, &error);
+
+  if (!success || bytes == 0)
+    {
+      if (!success)
+        {
+          if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED) ||
+              g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED))
+            return;
+          g_warning ("Error receiving instruction data: %s", error->message);
+        }
+
+      self = FP_DEVICE_VIRTUAL_DEVICE (user_data);
+      goto out;
+    }
+
+  self = FP_DEVICE_VIRTUAL_DEVICE (user_data);
+  handle_command_line (self, (const char *) self->line);
+
+out:
+  g_io_stream_close (G_IO_STREAM (self->connection), NULL, NULL);
+  g_clear_object (&self->connection);
+
+  start_listen (self);
+}
+
+static void
+recv_instruction (FpDeviceVirtualDevice *self,
+                  GInputStream          *stream)
+{
+  memset (&self->line, 0, sizeof (self->line));
+  g_input_stream_read_all_async (stream,
+                                 self->line,
+                                 sizeof (self->line),
+                                 G_PRIORITY_DEFAULT,
+                                 self->cancellable,
+                                 recv_instruction_cb,
+                                 self);
+}
+
+static void
+new_connection_cb (GObject      *source_object,
+                   GAsyncResult *res,
+                   gpointer      user_data)
+{
+  g_autoptr(GError) error = NULL;
+  g_autoptr(GSocketConnection) connection = NULL;
+  GInputStream *stream;
+  FpDeviceVirtualDevice *self = user_data;
+
+  connection = g_socket_listener_accept_finish (G_SOCKET_LISTENER (source_object),
+                                                res,
+                                                NULL,
+                                                &error);
+  if (!connection)
+    {
+      if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+        return;
+
+      g_warning ("Error accepting a new connection: %s", error->message);
+      start_listen (self);
+      return;
+    }
+
+  /* Always further connections (but we disconnect them immediately
+   * if we already have a connection). */
+  if (self->connection)
+    {
+      g_io_stream_close (G_IO_STREAM (connection), NULL, NULL);
+      start_listen (self);
+      return;
+    }
+
+  self->connection = g_steal_pointer (&connection);
+  stream = g_io_stream_get_input_stream (G_IO_STREAM (connection));
+
+  recv_instruction (self, stream);
+
+  fp_dbg ("Got a new connection!");
+}
+
+static void
+start_listen (FpDeviceVirtualDevice *self)
+{
+  fp_dbg ("Starting a new listener");
+  g_socket_listener_accept_async (self->listener,
+                                  self->cancellable,
+                                  new_connection_cb,
+                                  self);
+}
+
+static void
+dev_init (FpDevice *dev)
+{
+  fpi_device_open_complete (dev, NULL);
+}
+
+static void
+dev_verify (FpDevice *dev)
+{
+  FpPrint *print;
+
+  g_autoptr(GVariant) data = NULL;
+  gboolean success;
+
+  fpi_device_get_verify_data (dev, &print);
+  g_object_get (print, "fpi-data", &data, NULL);
+  success = g_variant_get_boolean (data);
+
+  fpi_device_verify_report (dev,
+                            success ? FPI_MATCH_SUCCESS : FPI_MATCH_FAIL,
+                            NULL, NULL);
+  fpi_device_verify_complete (dev, NULL);
+}
+
+static void
+dev_enroll (FpDevice *dev)
+{
+  FpDeviceVirtualDevice *self = FP_DEVICE_VIRTUAL_DEVICE (dev);
+  gpointer success_ptr;
+  FpPrint *print = NULL;
+  g_autofree char *key = NULL;
+
+  fpi_device_get_enroll_data (dev, &print);
+  key = g_strdup_printf ("%s-%s",
+                         finger_to_str (fp_print_get_finger (print)),
+                         fp_print_get_username (print));
+
+  if (g_hash_table_lookup_extended (self->pending_prints, key, NULL, &success_ptr))
+    {
+      gboolean success = GPOINTER_TO_INT (success_ptr);
+      GVariant *fp_data;
+
+      fp_data = g_variant_new_boolean (success);
+      fpi_print_set_type (print, FPI_PRINT_RAW);
+      if (fpi_device_get_driver_data (dev) == VIRTUAL_DEVICE_IDENT)
+        fpi_print_set_device_stored (print, TRUE);
+      g_object_set (print, "fpi-data", fp_data, NULL);
+      fpi_device_enroll_complete (dev, g_object_ref (print), NULL);
+    }
+  else
+    {
+      fpi_device_enroll_complete (dev, NULL,
+                                  fpi_device_error_new_msg (FP_DEVICE_ERROR_PROTO,
+                                                            "No pending result for this username/finger combination"));
+    }
+}
+
+static void
+dev_deinit (FpDevice *dev)
+{
+  fpi_device_close_complete (dev, NULL);
+}
+
+static gboolean
+dev_supports_identify (FpDevice *dev)
+{
+  return fpi_device_get_driver_data (dev) == VIRTUAL_DEVICE_IDENT;
+}
+
+static void
+dev_identify (FpDevice *dev)
+{
+  GPtrArray *templates;
+  FpPrint *result = NULL;
+  guint i;
+
+  g_assert (fpi_device_get_driver_data (dev) == VIRTUAL_DEVICE_IDENT);
+
+  fpi_device_get_identify_data (dev, &templates);
+
+  for (i = 0; i < templates->len; i++)
+    {
+      FpPrint *template = g_ptr_array_index (templates, i);
+      g_autoptr(GVariant) data = NULL;
+      gboolean success;
+
+      g_object_get (dev, "fpi-data", &template, NULL);
+      success = g_variant_get_boolean (data);
+      if (success)
+        {
+          result = template;
+          break;
+        }
+    }
+
+  if (result)
+    fpi_device_identify_report (dev, result, NULL, NULL);
+  fpi_device_identify_complete (dev, NULL);
+}
+
+static void
+fpi_device_virtual_device_finalize (GObject *object)
+{
+  FpDeviceVirtualDevice *self = FP_DEVICE_VIRTUAL_DEVICE (object);
+
+  G_DEBUG_HERE ();
+
+  g_cancellable_cancel (self->cancellable);
+  g_clear_object (&self->cancellable);
+  g_clear_object (&self->listener);
+  g_clear_object (&self->connection);
+  g_hash_table_destroy (self->pending_prints);
+}
+
+static void
+fpi_device_virtual_device_constructed (GObject *object)
+{
+  g_autoptr(GError) error = NULL;
+  g_autoptr(GSocketListener) listener = NULL;
+  FpDeviceVirtualDevice *self = FP_DEVICE_VIRTUAL_DEVICE (object);
+  const char *env;
+  g_autoptr(GSocketAddress) addr = NULL;
+  G_DEBUG_HERE ();
+
+  self->client_fd = -1;
+
+  env = fpi_device_get_virtual_env (FP_DEVICE (self));
+
+  listener = g_socket_listener_new ();
+  g_socket_listener_set_backlog (listener, 1);
+
+  /* Remove any left over socket. */
+  g_unlink (env);
+
+  addr = g_unix_socket_address_new (env);
+
+  if (!g_socket_listener_add_address (listener,
+                                      addr,
+                                      G_SOCKET_TYPE_STREAM,
+                                      G_SOCKET_PROTOCOL_DEFAULT,
+                                      NULL,
+                                      NULL,
+                                      &error))
+    {
+      g_warning ("Could not listen on unix socket: %s", error->message);
+
+      fpi_device_open_complete (FP_DEVICE (self), g_steal_pointer (&error));
+
+      return;
+    }
+
+  self->listener = g_steal_pointer (&listener);
+  self->cancellable = g_cancellable_new ();
+  self->pending_prints = g_hash_table_new_full (g_str_hash,
+                                                g_str_equal,
+                                                g_free,
+                                                NULL);
+
+  if (G_OBJECT_CLASS (fpi_device_virtual_device_parent_class)->constructed)
+    G_OBJECT_CLASS (fpi_device_virtual_device_parent_class)->constructed (object);
+
+  start_listen (self);
+}
+
+static void
+fpi_device_virtual_device_init (FpDeviceVirtualDevice *self)
+{
+}
+
+static const FpIdEntry driver_ids[] = {
+  { .virtual_envvar = "FP_VIRTUAL_DEVICE", .driver_data = VIRTUAL_DEVICE },
+  { .virtual_envvar = "FP_VIRTUAL_DEVICE_IDENT", .driver_data = VIRTUAL_DEVICE_IDENT },
+  { .virtual_envvar = NULL }
+};
+
+static void
+fpi_device_virtual_device_class_init (FpDeviceVirtualDeviceClass *klass)
+{
+  FpDeviceClass *dev_class = FP_DEVICE_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->constructed = fpi_device_virtual_device_constructed;
+  object_class->finalize = fpi_device_virtual_device_finalize;
+
+  dev_class->id = FP_COMPONENT;
+  dev_class->full_name = "Virtual device for debugging";
+  dev_class->type = FP_DEVICE_TYPE_VIRTUAL;
+  dev_class->id_table = driver_ids;
+  dev_class->nr_enroll_stages = 5;
+
+  dev_class->open = dev_init;
+  dev_class->close = dev_deinit;
+  dev_class->verify = dev_verify;
+  dev_class->enroll = dev_enroll;
+
+  dev_class->identify = dev_identify;
+  dev_class->supports_identify = dev_supports_identify;
+}

libfprint/drivers/virtual-image.c

@@ -21,7 +21,7 @@
 /*
  * This is a virtual driver to debug the image based drivers. A small
  * python script is provided to connect to it via a socket, allowing
- * prints to be sent to this device programatically.
+ * prints to be sent to this device programmatically.
  * Using this it is possible to test libfprint and fprintd.
  */
 
@@ -215,6 +215,7 @@ new_connection_cb (GObject *source_object, GAsyncResult *res, gpointer user_data
 
       g_warning ("Error accepting a new connection: %s", error->message);
       start_listen (dev);
+      return;
     }
 
   /* Always further connections (but we disconnect them immediately
@@ -277,7 +278,7 @@ dev_init (FpImageDevice *dev)
     {
       g_warning ("Could not listen on unix socket: %s", error->message);
 
-      fpi_image_device_open_complete (FP_IMAGE_DEVICE (dev), g_steal_pointer (&error));
+      fpi_image_device_open_complete (dev, g_steal_pointer (&error));
 
       return;
     }

libfprint/fp-context.c

@@ -94,22 +94,21 @@ async_device_init_done_cb (GObject *source_object, GAsyncResult *res, gpointer u
   FpContext *context;
   FpContextPrivate *priv;
 
-  device = (FpDevice *) g_async_initable_new_finish (G_ASYNC_INITABLE (source_object), res, &error);
-  if (!device)
-    {
-      if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
-        return;
-
-      context = FP_CONTEXT (user_data);
-      priv = fp_context_get_instance_private (context);
-      priv->pending_devices--;
-      g_message ("Ignoring device due to initialization error: %s", error->message);
-      return;
-    }
+  device = FP_DEVICE (g_async_initable_new_finish (G_ASYNC_INITABLE (source_object),
+                                                   res, &error));
+  if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+    return;
 
   context = FP_CONTEXT (user_data);
   priv = fp_context_get_instance_private (context);
   priv->pending_devices--;
+
+  if (error)
+    {
+      g_message ("Ignoring device due to initialization error: %s", error->message);
+      return;
+    }
+
   g_ptr_array_add (priv->devices, device);
   g_signal_emit (context, signals[DEVICE_ADDED_SIGNAL], 0, device);
 }
@@ -159,7 +158,7 @@ usb_device_added_cb (FpContext *self, GUsbDevice *device, GUsbContext *usb_ctx)
 
   if (found_driver == G_TYPE_NONE)
     {
-      g_debug ("No driver found for USB device %04X:%04X", pid, vid);
+      g_debug ("No driver found for USB device %04X:%04X", vid, pid);
       return;
     }
 

libfprint/fp-device.c

@@ -28,7 +28,7 @@
  * @title: Internal FpDevice
  * @short_description: Internal device routines
  *
- * The methods that are availabe for drivers to manipulate a device. See
+ * The methods that are available for drivers to manipulate a device. See
  * #FpDeviceClass for more information. Also note that most of these are
  * not relevant for image based devices, see #FpImageDeviceClass in that
  * case.
@@ -339,7 +339,7 @@ fp_device_class_init (FpDeviceClass *klass)
   properties[PROP_OPEN] =
     g_param_spec_boolean ("open",
                           "Opened",
-                          "Wether the device is open or not", FALSE,
+                          "Whether the device is open or not", FALSE,
                           G_PARAM_STATIC_STRINGS | G_PARAM_READABLE);
 
   /**
@@ -507,6 +507,9 @@ fp_device_supports_identify (FpDevice *device)
 
   g_return_val_if_fail (FP_IS_DEVICE (device), FALSE);
 
+  if (cls->supports_identify != NULL)
+    return cls->supports_identify (device);
+
   return cls->identify != NULL;
 }
 
@@ -946,6 +949,13 @@ fp_device_identify (FpDevice           *device,
   if (g_task_return_error_if_cancelled (task))
     return;
 
+  if (!fp_device_supports_identify (device))
+    {
+      g_task_return_error (task,
+                           fpi_device_error_new (FP_DEVICE_ERROR_NOT_SUPPORTED));
+      return;
+    }
+
   if (!priv->is_open)
     {
       g_task_return_error (task,

libfprint/fp-device.h

@@ -79,7 +79,7 @@ typedef enum {
 
 /**
  * FpDeviceError:
- * @FP_DEVICE_ERROR_GENERAL: A general error occured.
+ * @FP_DEVICE_ERROR_GENERAL: A general error occurred.
  * @FP_DEVICE_ERROR_NOT_SUPPORTED: The device does not support the requested
  *  operation.
  * @FP_DEVICE_ERROR_NOT_OPEN: The device needs to be opened to start this
@@ -113,7 +113,7 @@ GQuark fp_device_error_quark (void);
  * FpEnrollProgress:
  * @device: a #FpDevice
  * @completed_stages: Number of completed stages
- * @print: (nullable) (transfer none): The last scaned print
+ * @print: (nullable) (transfer none): The last scanned print
  * @user_data: (nullable) (transfer none): User provided data
  * @error: (nullable) (transfer none): #GError or %NULL
  *

libfprint/fp-image-device.c

@@ -100,7 +100,7 @@ fp_image_device_close (FpDevice *device)
    *  1. We are inactive
    *     -> immediately close
    *  2. We are waiting for finger off
-   *     -> imediately deactivate
+   *     -> immediately deactivate
    *  3. We are deactivating
    *     -> handled by deactivate_complete */
 

libfprint/fp-image.c

@@ -184,10 +184,8 @@ fp_image_detect_minutiae_cb (GObject      *source_object,
   GTask *task = G_TASK (res);
   FpImage *image;
   DetectMinutiaeData *data = g_task_get_task_data (task);
-  GCancellable *cancellable;
 
-  cancellable = g_task_get_cancellable (task);
-  if (!cancellable || !g_cancellable_is_cancelled (cancellable))
+  if (!g_task_had_error (task))
     {
       gint i;
       image = FP_IMAGE (source_object);
@@ -316,6 +314,14 @@ fp_image_detect_minutiae_thread_func (GTask        *task,
       return;
     }
 
+  if (!data->minutiae || data->minutiae->num == 0)
+    {
+      g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_FAILED,
+                               "No minutiae found");
+      g_object_unref (task);
+      return;
+    }
+
   g_task_return_boolean (task, TRUE);
   g_object_unref (task);
 }

libfprint/fp-print.c

@@ -51,7 +51,7 @@ enum {
   PROP_IMAGE,
 
   /* The following is metadata that is stored by default for each print.
-   * Drivers may make use of these during enrollment (e.g. to additionaly store
+   * Drivers may make use of these during enrollment (e.g. to additionally store
    * the metadata on the device). */
   PROP_FINGER,
   PROP_USERNAME,
@@ -588,7 +588,7 @@ fp_print_equal (FpPrint *self, FpPrint *other)
     }
   else if (self->type == FPI_PRINT_NBIS)
     {
-      gint i;
+      guint i;
 
       if (self->prints->len != other->prints->len)
         return FALSE;
@@ -661,7 +661,7 @@ fp_print_serialize (FpPrint *print,
   if (print->type == FPI_PRINT_NBIS)
     {
       GVariantBuilder nested = G_VARIANT_BUILDER_INIT (G_VARIANT_TYPE ("(a(aiaiai))"));
-      gint i;
+      guint i;
 
       g_variant_builder_open (&nested, G_VARIANT_TYPE ("a(aiaiai)"));
       for (i = 0; i < print->prints->len; i++)
@@ -812,7 +812,7 @@ fp_print_deserialize (const guchar *data,
   if (type == FPI_PRINT_NBIS)
     {
       g_autoptr(GVariant) prints = g_variant_get_child_value (print_data, 0);
-      gint i;
+      guint i;
 
       result = g_object_new (FP_TYPE_PRINT,
                              "driver", driver,

libfprint/fpi-device.c

@@ -28,7 +28,7 @@
  * @title: Internal FpDevice
  * @short_description: Internal device routines
  *
- * The methods that are availabe for drivers to manipulate a device. See
+ * The methods that are available for drivers to manipulate a device. See
  * #FpDeviceClass for more information. Also note that most of these are
  * not relevant for image based devices, see #FpImageDeviceClass in that
  * case.
@@ -100,7 +100,7 @@ fpi_device_error_new (FpDeviceError error)
   switch (error)
     {
     case FP_DEVICE_ERROR_GENERAL:
-      msg = "An unspecified error occured!";
+      msg = "An unspecified error occurred!";
       break;
 
     case FP_DEVICE_ERROR_NOT_SUPPORTED:
@@ -138,7 +138,7 @@ fpi_device_error_new (FpDeviceError error)
     default:
       g_warning ("Unsupported error, returning general error instead!");
       error = FP_DEVICE_ERROR_GENERAL;
-      msg = "An unspecified error occured!";
+      msg = "An unspecified error occurred!";
     }
 
   return g_error_new_literal (FP_DEVICE_ERROR, error, msg);

libfprint/fpi-device.h

@@ -65,10 +65,10 @@ struct _FpIdEntry
  * @probe: Called immediately for all devices. Most drivers will not need to
  *   implement this. Drivers should setup the device identifier from the probe
  *   callback which will be used to verify the compatibility of stored
- *   #FpPrint's. It is permissable to temporarily open the USB device if this
+ *   #FpPrint's. It is permissible to temporarily open the USB device if this
  *   is required for the operation. If an error is returned, then the device
  *   will be destroyed again immediately and never reported to the API user.
- * @open: Open the device for futher operations. Any of the normal actions are
+ * @open: Open the device for further operations. Any of the normal actions are
  *   guaranteed to only happen when the device is open (this includes delete).
  * @close: Close the device again
  * @enroll: Start an enroll operation
@@ -79,6 +79,7 @@ struct _FpIdEntry
  * @delete: Delete a print from the device
  * @cancel: Called on cancellation, this is a convenience to not need to handle
  *   the #GCancellable directly by using fpi_device_get_cancellable().
+ * @supports_identify: Whether identify operations are supported.
  *
  * NOTE: If your driver is image based, then you should subclass #FpImageDevice
  * instead. #FpImageDevice based drivers use a different way of interacting
@@ -128,7 +129,9 @@ struct _FpDeviceClass
   void (*list)     (FpDevice *device);
   void (*delete)   (FpDevice * device);
 
-  void (*cancel)   (FpDevice *device);
+  void     (*cancel)   (FpDevice *device);
+
+  gboolean (*supports_identify) (FpDevice *device);
 };
 
 /**

libfprint/fpi-image-device.c

@@ -171,7 +171,16 @@ fpi_image_device_minutiae_detected (GObject *source_object, GAsyncResult *res, g
       print = fp_print_new (device);
       fpi_print_set_type (print, FPI_PRINT_NBIS);
       if (!fpi_print_add_from_image (print, image, &error))
-        g_clear_object (&print);
+        {
+          g_clear_object (&print);
+
+          if (error->domain != FP_DEVICE_RETRY)
+            {
+              fpi_device_action_error (device, error);
+              fpi_image_device_deactivate (self);
+              return;
+            }
+        }
     }
 
   if (action == FPI_DEVICE_ACTION_ENROLL)

libfprint/fpi-print.c

@@ -23,6 +23,7 @@
 
 #include "fp-print-private.h"
 #include "fpi-device.h"
+#include "fpi-compat.h"
 
 /**
  * SECTION: fpi-print
@@ -247,3 +248,115 @@ fpi_print_bz3_match (FpPrint *template, FpPrint *print, gint bz3_threshold, GErr
 
   return FPI_MATCH_FAIL;
 }
+
+/**
+ * fpi_print_generate_user_id:
+ * @print: #FpPrint to generate the ID for
+ *
+ * Generates a string identifier for the represented print. This identifier
+ * encodes some metadata about the print. It also includes a random string
+ * and may be assumed to be unique.
+ *
+ * This is useful if devices are able to store a string identifier, but more
+ * storing more metadata may be desirable. In effect, this means the driver
+ * can provide somewhat more meaningful data to fp_device_list_prints().
+ *
+ * The generated ID may be truncated after 23 characters. However, more space
+ * is required to include the username, and it is recommended to store at
+ * at least 31 bytes.
+ *
+ * The generated format may change in the future. It is versioned though and
+ * decoding should remain functional.
+ *
+ * Returns: A unique string of 23 + strlen(username) characters
+ */
+gchar *
+fpi_print_generate_user_id (FpPrint *print)
+{
+  const gchar *username = NULL;
+  gchar *user_id = NULL;
+  const GDate *date;
+  gint y = 0, m = 0, d = 0;
+  gint32 rand_id = 0;
+
+  g_assert (print);
+  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);
+    }
+
+  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);
+
+  return user_id;
+
+}
+
+/**
+ * fpi_print_fill_from_user_id:
+ * @print: #FpPrint to fill metadata into
+ * @user_id: An ID that was likely encoded using fpi_print_generate_user_id()
+ *
+ * This is the reverse operation of fpi_print_generate_user_id(), allowing
+ * the driver to encode some print metadata in a string.
+ *
+ * Returns: Whether a valid ID was found
+ */
+gboolean
+fpi_print_fill_from_user_id (FpPrint *print, const char *user_id)
+{
+  g_return_val_if_fail (user_id, FALSE);
+
+  /* The format has 24 bytes at the start and some dashes in the right places */
+  if (g_str_has_prefix (user_id, "FP1-") && strlen (user_id) >= 24 &&
+      user_id[12] == '-' && user_id[14] == '-' && user_id[23] == '-')
+    {
+      g_autofree gchar *copy = g_strdup (user_id);
+      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);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}

libfprint/fpi-print.h

@@ -20,7 +20,7 @@ typedef enum {
 
 /**
  * FpiMatchResult:
- * @FPI_MATCH_ERROR: An error occured during matching
+ * @FPI_MATCH_ERROR: An error occurred during matching
  * @FPI_MATCH_FAIL: The prints did not match
  * @FPI_MATCH_SUCCESS: The prints matched
  */
@@ -47,4 +47,9 @@ FpiMatchResult fpi_print_bz3_match (FpPrint * template,
                                     gint bz3_threshold,
                                     GError **error);
 
+/* Helpers to encode metadata into user ID strings. */
+gchar *  fpi_print_generate_user_id (FpPrint *print);
+gboolean fpi_print_fill_from_user_id (FpPrint    *print,
+                                      const char *user_id);
+
 G_END_DECLS

libfprint/fpi-usb-transfer.c

@@ -366,7 +366,7 @@ transfer_finish_cb (GObject *source_object, GAsyncResult *res, gpointer user_dat
  *
  * Note that #FpiUsbTransfer will be stolen when this function is called.
  * So that all associated data will be free'ed automatically, after the
- * callback ran unless fpi_usb_transfer_ref() is explictly called.
+ * callback ran unless fpi_usb_transfer_ref() is explicitly called.
  */
 void
 fpi_usb_transfer_submit (FpiUsbTransfer        *transfer,

libfprint/fpi-usb-transfer.h

@@ -61,7 +61,7 @@ typedef enum  {
  * @length: The requested length of the transfer in bytes.
  * @actual_length: The actual length of the transfer
  *  (see also fpi_usb_transfer_set_short_error())
- * @buffer: The transfered data.
+ * @buffer: The transferred data.
  *
  * Helper for handling USB transfers.
  */

libfprint/fprint-list-supported-devices.c

@@ -2,7 +2,7 @@
  * Copyright (C) 2009 Red Hat <mjg@redhat.com>
  * Copyright (C) 2008 Bastien Nocera <hadess@hadess.net>
  * Copyright (C) 2008 Timo Hoenig <thoenig@suse.de>, <thoenig@nouse.net>
- * Coypright (C) 2019 Benjamin Berg <bberg@redhat.com>
+ * Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public

libfprint/fprint-list-udev-rules.c

@@ -2,7 +2,7 @@
  * Copyright (C) 2009 Red Hat <mjg@redhat.com>
  * Copyright (C) 2008 Bastien Nocera <hadess@hadess.net>
  * Copyright (C) 2008 Timo Hoenig <thoenig@suse.de>, <thoenig@nouse.net>
- * Coypright (C) 2019 Benjamin Berg <bberg@redhat.com>
+ * Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public

libfprint/meson.build

@@ -31,6 +31,7 @@ libfprint_private_headers = [
     'fpi-byte-reader.h',
     'fpi-byte-utils.h',
     'fpi-byte-writer.h',
+    'fpi-compat.h',
     'fpi-context.h',
     'fpi-device.h',
     'fpi-image-device.h',
@@ -154,6 +155,9 @@ foreach driver: drivers
     if driver == 'virtual_image'
         drivers_sources += [ 'drivers/virtual-image.c' ]
     endif
+    if driver == 'virtual_device'
+        drivers_sources += [ 'drivers/virtual-device.c' ]
+    endif
     if driver == 'synaptics'
     drivers_sources += [
         'drivers/synaptics/synaptics.c',
@@ -203,6 +207,7 @@ deps = [
     enums_dep,
     gio_dep,
     glib_dep,
+    gobject_dep,
     gusb_dep,
     imaging_dep,
     mathlib_dep,
@@ -258,7 +263,7 @@ libfprint = library(versioned_libname.split('lib')[1],
     version: libversion,
     link_args : vflag,
     link_depends : mapfile,
-    link_with: [libfprint_private, libfprint_drivers],
+    link_with: [libfprint_drivers, libfprint_private],
     dependencies: deps,
     install: true)
 
@@ -268,6 +273,7 @@ libfprint_dep = declare_dependency(link_with: libfprint,
         enums_dep,
         gio_dep,
         glib_dep,
+        gobject_dep,
         gusb_dep,
     ])
 
@@ -324,6 +330,7 @@ if get_option('introspection')
         link_with : libfprint,
         dependencies : [
             gio_dep,
+            gobject_dep,
             gusb_dep,
         ],
         includes : [

meson.build

@@ -79,6 +79,7 @@ versioned_libname = meson.project_name() + '-' + soversion.to_string()
 # Dependencies
 glib_dep = dependency('glib-2.0', version: '>=' + glib_min_version)
 gio_dep = dependency('gio-unix-2.0', version: '>=' + glib_min_version)
+gobject_dep = dependency('gobject-2.0', version: '>=' + glib_min_version)
 gusb_dep = dependency('gusb', version: '>= 0.2.0')
 mathlib_dep = cc.find_library('m', required: false)
 
@@ -87,7 +88,7 @@ cairo_dep = dependency('cairo', required: false)
 
 # Drivers
 drivers = get_option('drivers').split(',')
-virtual_drivers = [ 'virtual_image' ]
+virtual_drivers = [ 'virtual_image', 'virtual_device' ]
 default_drivers = [
     'upektc_img',
     'vfs5011',
@@ -210,6 +211,7 @@ pkgconfig.generate(
     description: 'Generic C API for fingerprint reader access',
     version: meson.project_version(),
     libraries: libfprint,
+    requires: [gio_dep, gobject_dep],
     subdirs: versioned_libname,
     filebase: versioned_libname,
 )

tests/test-device-fake.c

@@ -189,6 +189,7 @@ static void
 fpi_device_fake_capture (FpDevice *device)
 {
   FpiDeviceFake *fake_dev = FPI_DEVICE_FAKE (device);
+  gboolean wait_for_finger;
 
   fake_dev->last_called_function = fpi_device_fake_capture;
   g_assert_cmpuint (fpi_device_get_current_action (device), ==, FPI_DEVICE_ACTION_CAPTURE);
@@ -199,7 +200,8 @@ fpi_device_fake_capture (FpDevice *device)
       return;
     }
 
-  fpi_device_get_capture_data (device, (gboolean *) &fake_dev->action_data);
+  fpi_device_get_capture_data (device, &wait_for_finger);
+  fake_dev->action_data = GINT_TO_POINTER (wait_for_finger);
   fpi_device_capture_complete (device, fake_dev->ret_image, fake_dev->ret_error);
 }
 
@@ -234,7 +236,7 @@ fpi_device_fake_delete (FpDevice *device)
       return;
     }
 
-  fpi_device_get_delete_data (device, (gpointer) (&fake_dev->action_data));
+  fpi_device_get_delete_data (device, (FpPrint **) (&fake_dev->action_data));
   fpi_device_delete_complete (device, fake_dev->ret_error);
 }
 

tests/test-fp-context.c

@@ -49,7 +49,7 @@ test_context_has_virtual_device (void)
   GPtrArray *devices;
   unsigned int i;
 
-  fpt_setup_virtual_device_environment ();
+  fpt_setup_virtual_device_environment (FPT_VIRTUAL_DEVICE_IMAGE);
 
   context = fp_context_new ();
   devices = fp_context_get_devices (context);
@@ -70,7 +70,7 @@ test_context_has_virtual_device (void)
 
   g_assert_true (FP_IS_DEVICE (virtual_device));
 
-  fpt_teardown_virtual_device_environment ();
+  fpt_teardown_virtual_device_environment (FPT_VIRTUAL_DEVICE_IMAGE);
 }
 
 static void
@@ -81,7 +81,7 @@ test_context_enumerates_new_devices (void)
 
   context = fp_context_new ();
 
-  fpt_setup_virtual_device_environment ();
+  fpt_setup_virtual_device_environment (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_context_enumerate (context);
   devices = fp_context_get_devices (context);
@@ -89,7 +89,7 @@ test_context_enumerates_new_devices (void)
   g_assert_nonnull (devices);
   g_assert_cmpuint (devices->len, ==, 1);
 
-  fpt_teardown_virtual_device_environment ();
+  fpt_teardown_virtual_device_environment (FPT_VIRTUAL_DEVICE_IMAGE);
 }
 
 int

tests/test-fp-device.c

@@ -36,7 +36,7 @@ on_device_opened (FpDevice *dev, GAsyncResult *res, FptContext *tctx)
 static void
 test_device_open_async (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open (tctx->device, NULL, (GAsyncReadyCallback) on_device_opened, tctx);
 
@@ -59,7 +59,7 @@ on_device_closed (FpDevice *dev, GAsyncResult *res, FptContext *tctx)
 static void
 test_device_close_async (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open (tctx->device, NULL, (GAsyncReadyCallback) on_device_opened, tctx);
   while (!tctx->user_data)
@@ -76,7 +76,7 @@ static void
 test_device_open_sync (void)
 {
   g_autoptr(GError) error = NULL;
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, &error);
   g_assert_no_error (error);
@@ -97,7 +97,7 @@ static void
 test_device_open_sync_notify (void)
 {
   g_autoptr(GError) error = NULL;
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   g_signal_connect (tctx->device, "notify::open", G_CALLBACK (on_open_notify), tctx);
   fp_device_open_sync (tctx->device, NULL, &error);
@@ -109,7 +109,7 @@ static void
 test_device_close_sync (void)
 {
   g_autoptr(GError) error = NULL;
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   fp_device_close_sync (tctx->device, NULL, &error);
@@ -131,7 +131,7 @@ static void
 test_device_close_sync_notify (void)
 {
   g_autoptr(GError) error = NULL;
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
 
@@ -144,7 +144,7 @@ test_device_close_sync_notify (void)
 static void
 test_device_get_driver (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_cmpstr (fp_device_get_driver (tctx->device), ==, "virtual_image");
@@ -153,7 +153,7 @@ test_device_get_driver (void)
 static void
 test_device_get_device_id (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_cmpstr (fp_device_get_device_id (tctx->device), ==, "0");
@@ -162,7 +162,7 @@ test_device_get_device_id (void)
 static void
 test_device_get_name (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_cmpstr (fp_device_get_name (tctx->device), ==,
@@ -172,7 +172,7 @@ test_device_get_name (void)
 static void
 test_device_get_scan_type (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_cmpint (fp_device_get_scan_type (tctx->device), ==, FP_SCAN_TYPE_SWIPE);
@@ -181,7 +181,7 @@ test_device_get_scan_type (void)
 static void
 test_device_get_nr_enroll_stages (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_cmpuint (fp_device_get_nr_enroll_stages (tctx->device), ==, 5);
@@ -190,7 +190,7 @@ test_device_get_nr_enroll_stages (void)
 static void
 test_device_supports_identify (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_true (fp_device_supports_identify (tctx->device));
@@ -199,7 +199,7 @@ test_device_supports_identify (void)
 static void
 test_device_supports_capture (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_true (fp_device_supports_capture (tctx->device));
@@ -208,7 +208,7 @@ test_device_supports_capture (void)
 static void
 test_device_has_storage (void)
 {
-  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_imgdev ();
+  g_autoptr(FptContext) tctx = fpt_context_new_with_virtual_device (FPT_VIRTUAL_DEVICE_IMAGE);
 
   fp_device_open_sync (tctx->device, NULL, NULL);
   g_assert_false (fp_device_has_storage (tctx->device));

tests/test-fpi-device.c

@@ -959,7 +959,7 @@ test_driver_verify_complete_retry (void)
 
   g_test_assert_expected_messages ();
   g_assert_true (error != g_steal_pointer (&fake_dev->ret_error));
-  g_assert_true (error != g_steal_pointer (&fake_dev->user_data));
+  g_steal_pointer (&fake_dev->user_data);
   g_assert_error (error, FP_DEVICE_ERROR, FP_DEVICE_ERROR_GENERAL);
   g_assert_true (match_data->called);
   g_assert_error (match_data->error, FP_DEVICE_RETRY, FP_DEVICE_RETRY_TOO_SHORT);
@@ -981,7 +981,7 @@ test_driver_verify_complete_retry (void)
   g_test_assert_expected_messages ();
 
   g_assert_true (error != g_steal_pointer (&fake_dev->ret_error));
-  g_assert_true (error != g_steal_pointer (&fake_dev->user_data));
+  g_steal_pointer (&fake_dev->user_data);
   g_assert_error (error, FP_DEVICE_ERROR, FP_DEVICE_ERROR_GENERAL);
   g_assert_true (match_data->called);
   g_assert_error (match_data->error, FP_DEVICE_RETRY, FP_DEVICE_RETRY_TOO_SHORT);
@@ -1001,7 +1001,7 @@ test_driver_verify_complete_retry (void)
   g_test_assert_expected_messages ();
 
   g_assert_true (error != g_steal_pointer (&fake_dev->ret_error));
-  g_assert_true (error != g_steal_pointer (&fake_dev->user_data));
+  g_steal_pointer (&fake_dev->user_data);
   g_assert_error (error, FP_DEVICE_RETRY, FP_DEVICE_RETRY_GENERAL);
   g_assert_true (match_data->called);
   g_assert_error (match_data->error, FP_DEVICE_RETRY, FP_DEVICE_RETRY_GENERAL);
@@ -1296,7 +1296,7 @@ test_driver_identify_complete_retry (void)
   g_test_assert_expected_messages ();
 
   g_assert_true (error != g_steal_pointer (&fake_dev->ret_error));
-  g_assert_true (error != g_steal_pointer (&fake_dev->user_data));
+  g_steal_pointer (&fake_dev->user_data);
   g_assert_error (error, FP_DEVICE_ERROR, FP_DEVICE_ERROR_GENERAL);
   g_assert_true (match_data->called);
   g_assert_error (match_data->error, FP_DEVICE_RETRY, FP_DEVICE_RETRY_TOO_SHORT);

tests/test-utils.c

@@ -22,41 +22,60 @@
 
 #include "test-utils.h"
 
-void
-fpt_teardown_virtual_device_environment (void)
+struct
 {
-  const char *path = g_getenv ("FP_VIRTUAL_IMAGE");
+  const char *envvar;
+  const char *driver_id;
+  const char *device_id;
+} devtype_vars[FPT_NUM_VIRTUAL_DEVICE_TYPES] = {
+  { "FP_VIRTUAL_IMAGE", "virtual_image", "virtual_image" },               /* FPT_VIRTUAL_DEVICE_IMAGE */
+  { "FP_VIRTUAL_DEVICE", "virtual_device", "virtual_device" },            /* FPT_VIRTUAL_DEVICE */
+  { "FP_VIRTUAL_DEVICE_IDENT", "virtual_device", "virtual_device_ident" } /* FPT_VIRTUAL_DEVICE_IDENT */
+};
+
+void
+fpt_teardown_virtual_device_environment (FptVirtualDeviceType devtype)
+{
+  const char *path;
+
+  path = g_getenv (devtype_vars[devtype].envvar);
 
   if (path)
     {
       g_autofree char *temp_dir = g_path_get_dirname (path);
 
-      g_unsetenv ("FP_VIRTUAL_IMAGE");
+      g_unsetenv (devtype_vars[devtype].envvar);
       g_unlink (path);
       g_rmdir (temp_dir);
     }
 }
 
+static FptVirtualDeviceType global_devtype;
+
 static void
 on_signal_event (int sig)
 {
-  fpt_teardown_virtual_device_environment ();
+  fpt_teardown_virtual_device_environment (global_devtype);
 }
 
 void
-fpt_setup_virtual_device_environment (void)
+fpt_setup_virtual_device_environment (FptVirtualDeviceType devtype)
 {
   g_autoptr(GError) error = NULL;
   g_autofree char *temp_dir = NULL;
   g_autofree char *temp_path = NULL;
+  g_autofree char *filename = NULL;
 
-  g_assert_null (g_getenv ("FP_VIRTUAL_IMAGE"));
+  g_assert_null (g_getenv (devtype_vars[devtype].envvar));
 
   temp_dir = g_dir_make_tmp ("libfprint-XXXXXX", &error);
   g_assert_no_error (error);
 
-  temp_path = g_build_filename (temp_dir, "virtual-image.socket", NULL);
-  g_setenv ("FP_VIRTUAL_IMAGE", temp_path, TRUE);
+  filename = g_strdup_printf ("%s.socket", devtype_vars[devtype].device_id);
+  temp_path = g_build_filename (temp_dir, filename, NULL);
+  g_setenv (devtype_vars[devtype].envvar, temp_path, TRUE);
+
+  global_devtype = devtype;
 
   signal (SIGKILL, on_signal_event);
   signal (SIGABRT, on_signal_event);
@@ -78,13 +97,16 @@ fpt_context_new (void)
 }
 
 FptContext *
-fpt_context_new_with_virtual_imgdev (void)
+fpt_context_new_with_virtual_device (FptVirtualDeviceType devtype)
 {
   FptContext *tctx;
   GPtrArray *devices;
   unsigned int i;
 
-  fpt_setup_virtual_device_environment ();
+  g_assert_true (devtype >= FPT_VIRTUAL_DEVICE_IMAGE &&
+                 devtype < FPT_NUM_VIRTUAL_DEVICE_TYPES);
+
+  fpt_setup_virtual_device_environment (devtype);
 
   tctx = fpt_context_new ();
   devices = fp_context_get_devices (tctx->fp_context);
@@ -96,7 +118,7 @@ fpt_context_new_with_virtual_imgdev (void)
     {
       FpDevice *device = devices->pdata[i];
 
-      if (g_strcmp0 (fp_device_get_driver (device), "virtual_image") == 0)
+      if (g_strcmp0 (fp_device_get_driver (device), devtype_vars[devtype].driver_id) == 0)
         {
           tctx->device = device;
           break;
@@ -105,6 +127,7 @@ fpt_context_new_with_virtual_imgdev (void)
 
   g_assert_true (FP_IS_DEVICE (tctx->device));
   g_object_add_weak_pointer (G_OBJECT (tctx->device), (gpointer) & tctx->device);
+  g_object_set_data (G_OBJECT (tctx->fp_context), "devtype", GUINT_TO_POINTER (devtype));
 
   return tctx;
 }
@@ -112,6 +135,10 @@ fpt_context_new_with_virtual_imgdev (void)
 void
 fpt_context_free (FptContext *tctx)
 {
+  FptVirtualDeviceType devtype;
+
+  devtype = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (tctx->fp_context), "devtype"));
+
   if (tctx->device && fp_device_is_open (tctx->device))
     {
       g_autoptr(GError) error = NULL;
@@ -123,5 +150,5 @@ fpt_context_free (FptContext *tctx)
   g_clear_object (&tctx->fp_context);
   g_free (tctx);
 
-  fpt_teardown_virtual_device_environment ();
+  fpt_teardown_virtual_device_environment (devtype);
 }

tests/test-utils.h

@@ -19,8 +19,15 @@
 
 #include <glib.h>
 
-void fpt_setup_virtual_device_environment (void);
-void fpt_teardown_virtual_device_environment (void);
+typedef enum {
+  FPT_VIRTUAL_DEVICE_IMAGE = 0,
+  FPT_VIRTUAL_DEVICE,
+  FPT_VIRTUAL_DEVICE_IDENTIFY,
+  FPT_NUM_VIRTUAL_DEVICE_TYPES
+} FptVirtualDeviceType;
+
+void fpt_setup_virtual_device_environment (FptVirtualDeviceType devtype);
+void fpt_teardown_virtual_device_environment (FptVirtualDeviceType devtype);
 
 typedef struct _FptContext
 {
@@ -30,7 +37,7 @@ typedef struct _FptContext
 } FptContext;
 
 FptContext * fpt_context_new (void);
-FptContext * fpt_context_new_with_virtual_imgdev (void);
+FptContext * fpt_context_new_with_virtual_device (FptVirtualDeviceType devtype);
 
 void fpt_context_free (FptContext *test_context);
 

tests/virtual-image.py

@@ -3,11 +3,10 @@
 import sys
 try:
     import gi
-    gi.require_version('FPrint', '2.0')
-    from gi.repository import FPrint, GLib, Gio
-
     import os
-    import sys
+
+    from gi.repository import GLib, Gio
+
     import unittest
     import socket
     import struct
@@ -20,6 +19,8 @@ except Exception as e:
     print("Missing dependencies: %s" % str(e))
     sys.exit(77)
 
+FPrint = None
+
 # Re-run the test with the passed wrapper if set
 wrapper = os.getenv('LIBFPRINT_TEST_WRAPPER')
 if wrapper:
@@ -101,12 +102,14 @@ class VirtualImage(unittest.TestCase):
         del self.con
         self.dev.close_sync()
 
-    def send_retry(self, retry_error=FPrint.DeviceRetry.TOO_SHORT, iterate=True):
+    def send_retry(self, retry_error=None, iterate=True):
+        retry_error = retry_error if retry_error else FPrint.DeviceRetry.TOO_SHORT
         self.con.sendall(struct.pack('ii', -1, retry_error))
         while iterate and ctx.pending():
             ctx.iteration(False)
 
-    def send_error(self, device_error=FPrint.DeviceError.GENERAL, iterate=True):
+    def send_error(self, device_error=None, iterate=True):
+        device_error = device_error if device_error else FPrint.DeviceError.GENERAL
         self.con.sendall(struct.pack('ii', -2, device_error))
         while iterate and ctx.pending():
             ctx.iteration(False)
@@ -346,5 +349,12 @@ class VirtualImage(unittest.TestCase):
         assert(not self._verify_match)
 
 if __name__ == '__main__':
+    try:
+        gi.require_version('FPrint', '2.0')
+        from gi.repository import FPrint
+    except Exception as e:
+        print("Missing dependencies: %s" % str(e))
+        sys.exit(77)
+
     # avoid writing to stderr
     unittest.main(testRunner=unittest.TextTestRunner(stream=sys.stdout, verbosity=2))