3108ac3144
This matches the expectation. i.e. we return no-match and we do not return a scanned print as we don't have anything for it. If we did indeed return a scanned print, then fprintd would try to delete it during enroll and would then fail. Note that we do *not* return a DATA_NOT_FOUND error in the storage device if the print does not exist. This is because not all devices support reporting this error. It is therefore more sensible to handle it gracefully and expect test setups to set the error explicitly for testing purposes.
285 lines
8.4 KiB
C
285 lines
8.4 KiB
C
/*
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* Virtual driver for "simple" device debugging with storage
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*
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* Copyright (C) 2020 Bastien Nocera <hadess@hadess.net>
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* Copyright (C) 2020 Marco Trevisan <marco.trevisan@canonical.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* This is a virtual driver to debug the non-image based drivers. A small
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* python script is provided to connect to it via a socket, allowing
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* prints to registered programmatically.
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* Using this, it is possible to test libfprint and fprintd.
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*/
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#define FP_COMPONENT "virtual_device_storage"
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#include "virtual-device-private.h"
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#include "fpi-log.h"
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G_DEFINE_TYPE (FpDeviceVirtualDeviceStorage, fpi_device_virtual_device_storage, fpi_device_virtual_device_get_type ())
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static GPtrArray * get_stored_prints (FpDeviceVirtualDevice * self);
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static void
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dev_identify (FpDevice *dev)
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{
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g_autoptr(GError) error = NULL;
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FpDeviceVirtualDevice *self = FP_DEVICE_VIRTUAL_DEVICE (dev);
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g_autofree char *scan_id = NULL;
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if (!start_scan_command (self, &scan_id, &error))
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return;
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if (scan_id)
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{
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g_autoptr(GPtrArray) stored = get_stored_prints (self);
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GPtrArray *prints;
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GVariant *data = NULL;
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FpPrint *new_scan;
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FpPrint *match = NULL;
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guint idx;
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new_scan = fp_print_new (dev);
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fpi_print_set_type (new_scan, FPI_PRINT_RAW);
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fpi_print_set_device_stored (new_scan, TRUE);
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data = g_variant_new_string (scan_id);
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g_object_set (new_scan, "fpi-data", data, NULL);
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fpi_device_get_identify_data (dev, &prints);
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g_debug ("Trying to identify print '%s' against a gallery of %u prints", scan_id, prints->len);
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if (!g_ptr_array_find_with_equal_func (stored,
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new_scan,
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(GEqualFunc) fp_print_equal,
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NULL))
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{
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match = FALSE;
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g_clear_object (&new_scan);
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}
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else if (g_ptr_array_find_with_equal_func (prints,
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new_scan,
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(GEqualFunc) fp_print_equal,
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&idx))
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{
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match = g_ptr_array_index (prints, idx);
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}
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if (!self->match_reported)
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{
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self->match_reported = TRUE;
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fpi_device_identify_report (dev,
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match,
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new_scan,
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NULL);
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}
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}
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else if (error && error->domain == FP_DEVICE_RETRY)
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{
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fpi_device_identify_report (dev, NULL, NULL, g_steal_pointer (&error));
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}
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fpi_device_report_finger_status_changes (FP_DEVICE (self),
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FP_FINGER_STATUS_NONE,
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FP_FINGER_STATUS_PRESENT);
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if (should_wait_to_sleep (self, scan_id, error))
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return;
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self->match_reported = FALSE;
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fpi_device_identify_complete (dev, g_steal_pointer (&error));
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}
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struct ListData
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{
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FpDevice *dev;
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GPtrArray *res;
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};
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static void
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dev_list_insert_print (gpointer key,
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gpointer value,
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gpointer user_data)
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{
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struct ListData *data = user_data;
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FpPrint *print = fp_print_new (data->dev);
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GVariant *var = NULL;
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fpi_print_fill_from_user_id (print, key);
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fpi_print_set_type (print, FPI_PRINT_RAW);
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var = g_variant_new_string (key);
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g_object_set (print, "fpi-data", var, NULL);
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g_object_ref_sink (print);
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g_ptr_array_add (data->res, print);
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}
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static GPtrArray *
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get_stored_prints (FpDeviceVirtualDevice *self)
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{
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GPtrArray * prints_list;
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struct ListData data;
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prints_list = g_ptr_array_new_full (g_hash_table_size (self->prints_storage),
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g_object_unref);
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data.dev = FP_DEVICE (self);
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data.res = prints_list;
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g_hash_table_foreach (self->prints_storage, dev_list_insert_print, &data);
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return prints_list;
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}
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static void
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dev_list (FpDevice *dev)
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{
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g_autoptr(GPtrArray) prints_list = NULL;
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g_autoptr(GError) error = NULL;
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FpDeviceVirtualDevice *vdev = FP_DEVICE_VIRTUAL_DEVICE (dev);
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if (!process_cmds (vdev, FALSE, NULL, &error))
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return;
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if (error)
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{
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fpi_device_list_complete (dev, NULL, g_steal_pointer (&error));
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return;
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}
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fpi_device_list_complete (dev, get_stored_prints (vdev), NULL);
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}
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static void
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dev_clear_storage (FpDevice *dev)
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{
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g_autoptr(GPtrArray) prints_list = NULL;
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g_autoptr(GError) error = NULL;
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FpDeviceVirtualDevice *vdev = FP_DEVICE_VIRTUAL_DEVICE (dev);
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if (!process_cmds (vdev, FALSE, NULL, &error))
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return;
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if (error)
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{
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fpi_device_clear_storage_complete (dev, g_steal_pointer (&error));
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return;
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}
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g_hash_table_remove_all (vdev->prints_storage);
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fpi_device_clear_storage_complete (dev, NULL);
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}
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static void
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dev_delete (FpDevice *dev)
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{
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g_autoptr(GVariant) data = NULL;
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g_autoptr(GError) error = NULL;
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FpDeviceVirtualDevice *vdev = FP_DEVICE_VIRTUAL_DEVICE (dev);
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FpPrint *print = NULL;
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const char *id = NULL;
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if (!process_cmds (vdev, FALSE, NULL, &error))
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return;
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if (error)
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{
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fpi_device_delete_complete (dev, g_steal_pointer (&error));
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return;
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}
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fpi_device_get_delete_data (dev, &print);
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g_object_get (print, "fpi-data", &data, NULL);
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if (data == NULL)
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{
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fpi_device_delete_complete (dev,
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fpi_device_error_new (FP_DEVICE_ERROR_DATA_INVALID));
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return;
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}
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id = g_variant_get_string (data, NULL);
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fp_dbg ("Deleting print %s for user %s",
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id,
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fp_print_get_username (print));
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if (g_hash_table_remove (vdev->prints_storage, id))
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fpi_device_delete_complete (dev, NULL);
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else
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fpi_device_delete_complete (dev,
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fpi_device_error_new (FP_DEVICE_ERROR_DATA_NOT_FOUND));
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}
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static void
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dev_probe (FpDevice *dev)
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{
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/* Disable features listed in driver_data */
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fpi_device_update_features (dev, fpi_device_get_driver_data (dev), 0);
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fpi_device_probe_complete (dev, NULL, NULL, NULL);
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}
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static void
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fpi_device_virtual_device_storage_init (FpDeviceVirtualDeviceStorage *self)
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{
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FpDeviceVirtualDevice *vdev = FP_DEVICE_VIRTUAL_DEVICE (self);
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vdev->prints_storage = g_hash_table_new_full (g_str_hash,
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g_str_equal,
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g_free,
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NULL);
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}
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static void
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fpi_device_virtual_device_storage_finalize (GObject *object)
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{
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FpDeviceVirtualDevice *vdev = FP_DEVICE_VIRTUAL_DEVICE (object);
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G_DEBUG_HERE ();
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g_clear_pointer (&vdev->prints_storage, g_hash_table_destroy);
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G_OBJECT_CLASS (fpi_device_virtual_device_storage_parent_class)->finalize (object);
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}
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static const FpIdEntry driver_ids[] = {
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{ .virtual_envvar = "FP_VIRTUAL_DEVICE_STORAGE", .driver_data = 0 },
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{ .virtual_envvar = "FP_VIRTUAL_DEVICE_STORAGE_NO_LIST", .driver_data = FP_DEVICE_FEATURE_STORAGE_LIST },
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{ .virtual_envvar = NULL }
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};
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static void
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fpi_device_virtual_device_storage_class_init (FpDeviceVirtualDeviceStorageClass *klass)
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{
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FpDeviceClass *dev_class = FP_DEVICE_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = fpi_device_virtual_device_storage_finalize;
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dev_class->id = FP_COMPONENT;
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dev_class->full_name = "Virtual device with storage and identification for debugging";
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dev_class->id_table = driver_ids;
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dev_class->probe = dev_probe;
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dev_class->identify = dev_identify;
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dev_class->list = dev_list;
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dev_class->delete = dev_delete;
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dev_class->clear_storage = dev_clear_storage;
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fpi_device_class_auto_initialize_features (dev_class);
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dev_class->features |= FP_DEVICE_FEATURE_DUPLICATES_CHECK;
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}
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