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.

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'))
+

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

@@ -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-device.c

@@ -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/fpi-device.h

@@ -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/meson.build

@@ -155,6 +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',

meson.build

@@ -88,7 +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',

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-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);