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libfprint/libfprint/fp-print.c
Marco Trevisan (Treviño) 6a090656b6 nbis: Add a global include file with all the definitions ignoring erros 
The nbis headers are full of redundant declarations, we can't fix them all
now, so in the mean time let's use an header using pragma to ignore such
errors.

Add the error to nbis private include folder that should be used only by
headers of libfprint-nbis.
2019-12-04 18:44:39 +01:00

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/*
* FPrint Print handling
* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
* 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
* 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
*/
#include "fpi-print.h"
#include "fpi-image.h"
#include "fpi-device.h"
#include <nbis.h>
/**
* SECTION: fp-print
* @title: FpPrint
* @short_description: Fingerprint handling
*
* Interaction with prints and their storage.
*/
/**
* SECTION: fpi-print
* @title: Internal FpPrint
* @short_description: Internal fingerprint handling routines
*
* Interaction with prints and their storage. See also the public
* #FpPrint routines.
*/
struct _FpPrint
{
GInitiallyUnowned parent_instance;
FpPrintType type;
gchar *driver;
gchar *device_id;
gboolean device_stored;
FpImage *image;
/* Metadata */
FpFinger finger;
gchar *username;
gchar *description;
GDate *enroll_date;
GVariant *data;
GPtrArray *prints;
};
G_DEFINE_TYPE (FpPrint, fp_print, G_TYPE_INITIALLY_UNOWNED)
enum {
PROP_0,
PROP_DRIVER,
PROP_DEVICE_ID,
PROP_DEVICE_STORED,
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
* the metadata on the device). */
PROP_FINGER,
PROP_USERNAME,
PROP_DESCRIPTION,
PROP_ENROLL_DATE,
/* Private property*/
PROP_FPI_TYPE,
PROP_FPI_DATA,
N_PROPS
};
static GParamSpec *properties[N_PROPS];
static void
fp_print_finalize (GObject *object)
{
FpPrint *self = (FpPrint *) object;
g_clear_object (&self->image);
g_clear_pointer (&self->device_id, g_free);
g_clear_pointer (&self->driver, g_free);
g_clear_pointer (&self->username, g_free);
g_clear_pointer (&self->description, g_free);
g_clear_pointer (&self->enroll_date, g_date_free);
g_clear_pointer (&self->data, g_variant_unref);
g_clear_pointer (&self->prints, g_ptr_array_unref);
G_OBJECT_CLASS (fp_print_parent_class)->finalize (object);
}
static void
fp_print_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
FpPrint *self = FP_PRINT (object);
switch (prop_id)
{
case PROP_DRIVER:
g_value_set_string (value, self->driver);
break;
case PROP_DEVICE_ID:
g_value_set_string (value, self->device_id);
break;
case PROP_DEVICE_STORED:
g_value_set_boolean (value, self->device_stored);
break;
case PROP_IMAGE:
g_value_set_object (value, self->image);
break;
case PROP_FINGER:
g_value_set_enum (value, self->finger);
break;
case PROP_USERNAME:
g_value_set_string (value, self->username);
break;
case PROP_DESCRIPTION:
g_value_set_string (value, self->description);
break;
case PROP_ENROLL_DATE:
g_value_set_boxed (value, self->enroll_date);
break;
case PROP_FPI_TYPE:
g_value_set_enum (value, self->type);
break;
case PROP_FPI_DATA:
g_value_set_variant (value, self->data);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
fp_print_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
FpPrint *self = FP_PRINT (object);
switch (prop_id)
{
case PROP_FPI_TYPE:
fpi_print_set_type (self, g_value_get_enum (value));
break;
case PROP_DRIVER:
self->driver = g_value_dup_string (value);
break;
case PROP_DEVICE_ID:
self->device_id = g_value_dup_string (value);
break;
case PROP_DEVICE_STORED:
self->device_stored = g_value_get_boolean (value);
break;
case PROP_FINGER:
self->finger = g_value_get_enum (value);
break;
case PROP_USERNAME:
g_clear_pointer (&self->username, g_free);
self->username = g_value_dup_string (value);
break;
case PROP_DESCRIPTION:
g_clear_pointer (&self->description, g_free);
self->description = g_value_dup_string (value);
break;
case PROP_ENROLL_DATE:
g_clear_pointer (&self->enroll_date, g_date_free);
self->enroll_date = g_value_dup_boxed (value);
break;
case PROP_FPI_DATA:
g_clear_pointer (&self->data, g_variant_unref);
self->data = g_value_dup_variant (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
fp_print_constructed (GObject *obj)
{
FpPrint *self = FP_PRINT (obj);
g_assert (self->driver != NULL);
g_assert (self->device_id != NULL);
}
static void
fp_print_class_init (FpPrintClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = fp_print_constructed;
object_class->finalize = fp_print_finalize;
object_class->get_property = fp_print_get_property;
object_class->set_property = fp_print_set_property;
properties[PROP_DRIVER] =
g_param_spec_string ("driver",
"Driver",
"The name of the driver that created the print",
NULL,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
properties[PROP_DEVICE_ID] =
g_param_spec_string ("device-id",
"Device ID",
"Unique ID allowing to check if a device is compatible with the print",
NULL,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
properties[PROP_DEVICE_STORED] =
g_param_spec_boolean ("device-stored",
"Device Stored",
"Whether the print is a handle for data that is stored on the device",
FALSE,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
properties[PROP_IMAGE] =
g_param_spec_object ("image",
"Image",
"The image that was used for the print, only valid for newly enrolled prints on image based devices",
FP_TYPE_IMAGE,
G_PARAM_STATIC_STRINGS | G_PARAM_READABLE);
properties[PROP_FINGER] =
g_param_spec_enum ("finger",
"Finger",
"The enrolled finger",
FP_TYPE_FINGER,
FP_FINGER_UNKNOWN,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
properties[PROP_USERNAME] =
g_param_spec_string ("username",
"Username",
"The username that the enrolled print belongs to",
NULL,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
properties[PROP_DESCRIPTION] =
g_param_spec_string ("description",
"Description",
"A user defined description for the print",
NULL,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
properties[PROP_ENROLL_DATE] =
g_param_spec_boxed ("enroll-date",
"Enroll Date",
"The date of enrollment",
G_TYPE_DATE,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
properties[PROP_FPI_TYPE] =
g_param_spec_enum ("fp-type",
"Type",
"Private: The type of the print data",
FP_TYPE_PRINT_TYPE,
FP_PRINT_RAW,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_FPI_DATA] =
g_param_spec_variant ("fp-data",
"Raw Data",
"The raw data for internal use only",
G_VARIANT_TYPE_ANY,
NULL,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
g_object_class_install_properties (object_class, N_PROPS, properties);
}
static void
fp_print_init (FpPrint *self)
{
}
/**
* fp_print_new:
* @device: A #FpDevice
*
* Create a new #FpPrint. This is only useful to prepare an enrollment
* of a new print using fp_device_enroll(). For this you should first
* create a new print, fill in the relevant metadata, and then start
* enrollment.
*
* Returns: (transfer floating): A newyl created #FpPrint
*/
FpPrint *
fp_print_new (FpDevice *device)
{
g_return_val_if_fail (device, NULL);
return g_object_new (FP_TYPE_PRINT,
"driver", fp_device_get_driver (device),
"device-id", fp_device_get_device_id (device),
NULL);
}
/**
* fp_print_get_driver:
* @print: A #FpPrint
*
* Returns the driver that the print was created for.
*
* Returns: (transfer none): The driver
*/
const gchar *
fp_print_get_driver (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), NULL);
return print->driver;
}
/**
* fp_print_get_device_id:
* @print: A #FpPrint
*
* Returns the device ID that the print was created for.
*
* Returns: (transfer none): The device ID
*/
const gchar *
fp_print_get_device_id (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), NULL);
return print->device_id;
}
/**
* fp_print_get_device_stored:
* @print: A #FpPrint
*
* Whether the print is actually stored on the device and this is
* just a handle to use that references the device stored data.
*
* Returns: Whether the print is stored on the device
*/
gboolean
fp_print_get_device_stored (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), FALSE);
return print->device_stored;
}
/**
* fp_print_get_image:
* @print: A #FpPrint
*
* Returns the image that the print was created from, or %NULL
*
* Returns: (transfer none) (nullable): The #FpImage
*/
FpImage *
fp_print_get_image (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), NULL);
return print->image;
}
/**
* fp_print_get_finger:
* @print: A #FpPrint
*
* Returns the finger that the print was created for.
*
* Returns: The #FpFinger
*/
FpFinger
fp_print_get_finger (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), FP_FINGER_UNKNOWN);
return print->finger;
}
/**
* fp_print_get_username:
* @print: A #FpPrint
*
* Returns the user defined username for the print.
*
* Returns: (transfer none) (nullable): The username
*/
const gchar *
fp_print_get_username (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), NULL);
return print->username;
}
/**
* fp_print_get_description:
* @print: A #FpPrint
*
* Returns the user defined description for the print.
*
* Returns: (transfer none) (nullable): The description
*/
const gchar *
fp_print_get_description (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), NULL);
return print->description;
}
/**
* fp_print_get_enroll_date:
* @print: A #FpPrint
*
* Returns the user defined enroll date for the print.
*
* Returns: (transfer none) (nullable): The #GDate
*/
const GDate *
fp_print_get_enroll_date (FpPrint *print)
{
g_return_val_if_fail (FP_IS_PRINT (print), NULL);
return print->enroll_date;
}
/**
* fp_print_set_finger:
* @print: A #FpPrint
* @finger: The #FpFinger
*
* Set the finger that the print is for.
*/
void
fp_print_set_finger (FpPrint *print,
FpFinger finger)
{
g_return_if_fail (FP_IS_PRINT (print));
print->finger = finger;
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_FINGER]);
}
/**
* fp_print_set_username:
* @print: A #FpPrint
* @username: (transfer none): The new username
*
* Set the username for the print.
*/
void
fp_print_set_username (FpPrint *print,
const gchar *username)
{
g_return_if_fail (FP_IS_PRINT (print));
g_clear_pointer (&print->username, g_free);
print->username = g_strdup (username);
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_USERNAME]);
}
/**
* fp_print_set_description:
* @print: A #FpPrint
* @description: (transfer none): The new description
*
* Set the description for the print.
*/
void
fp_print_set_description (FpPrint *print,
const gchar *description)
{
g_return_if_fail (FP_IS_PRINT (print));
g_clear_pointer (&print->description, g_free);
print->description = g_strdup (description);
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_DESCRIPTION]);
}
/**
* fp_print_set_enroll_date:
* @print: A #FpPrint
* @enroll_date: (transfer none): The new enroll date
*
* Set the enroll date for the print.
*/
void
fp_print_set_enroll_date (FpPrint *print,
const GDate *enroll_date)
{
g_return_if_fail (FP_IS_PRINT (print));
g_clear_pointer (&print->enroll_date, g_date_free);
if (enroll_date)
print->enroll_date = g_date_copy (enroll_date);
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_ENROLL_DATE]);
}
/**
* fpi_print_add_print:
* @print: A #FpPrint
* @add: Print to append to @print
*
* Appends the single #FP_PRINT_NBIS print from @add to the collection of
* prints in @print. Both print objects need to be of type #FP_PRINT_NBIS
* for this to work.
*/
void
fpi_print_add_print (FpPrint *print, FpPrint *add)
{
g_return_if_fail (print->type == FP_PRINT_NBIS);
g_return_if_fail (add->type == FP_PRINT_NBIS);
g_assert (add->prints->len == 1);
g_ptr_array_add (print->prints, g_memdup (add->prints->pdata[0], sizeof (struct xyt_struct)));
}
/**
* fpi_print_set_type:
* @print: A #FpPrint
* @type: The newly type of the print data
*
* This function can only be called exactly once. Drivers should
* call it after creating a new print, or to initialize the template
* print passed during enrollment.
*/
void
fpi_print_set_type (FpPrint *print,
FpPrintType type)
{
g_return_if_fail (FP_IS_PRINT (print));
/* We only allow setting this once! */
g_return_if_fail (print->type == FP_PRINT_UNDEFINED);
print->type = type;
if (print->type == FP_PRINT_NBIS)
{
g_assert_null (print->prints);
print->prints = g_ptr_array_new_with_free_func (g_free);
}
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_FPI_TYPE]);
}
/**
* fpi_print_set_device_stored:
* @print: A #FpPrint
* @device_stored: Whether the print is stored on the device or not
*
* Drivers must set this to %TRUE for any print that is really a handle
* for data that is stored on the device itself.
*/
void
fpi_print_set_device_stored (FpPrint *print,
gboolean device_stored)
{
g_return_if_fail (FP_IS_PRINT (print));
print->device_stored = device_stored;
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_DEVICE_STORED]);
}
/* XXX: This is the old version, but wouldn't it be smarter to instead
* use the highest quality mintutiae? Possibly just using bz_prune from
* upstream? */
static void
minutiae_to_xyt (struct fp_minutiae *minutiae,
int bwidth,
int bheight,
struct xyt_struct *xyt)
{
int i;
struct fp_minutia *minutia;
struct minutiae_struct c[MAX_FILE_MINUTIAE];
/* struct xyt_struct uses arrays of MAX_BOZORTH_MINUTIAE (200) */
int nmin = min (minutiae->num, MAX_BOZORTH_MINUTIAE);
for (i = 0; i < nmin; i++)
{
minutia = minutiae->list[i];
lfs2nist_minutia_XYT (&c[i].col[0], &c[i].col[1], &c[i].col[2],
minutia, bwidth, bheight);
c[i].col[3] = sround (minutia->reliability * 100.0);
if (c[i].col[2] > 180)
c[i].col[2] -= 360;
}
qsort ((void *) &c, (size_t) nmin, sizeof (struct minutiae_struct),
sort_x_y);
for (i = 0; i < nmin; i++)
{
xyt->xcol[i] = c[i].col[0];
xyt->ycol[i] = c[i].col[1];
xyt->thetacol[i] = c[i].col[2];
}
xyt->nrows = nmin;
}
/**
* fpi_print_add_from_image:
* @print: A #FpPrint
* @image: A #FpImage
* @error: Return location for error
*
* Extracts the minutiae from the given image and adds it to @print of
* type #FP_PRINT_NBIS.
*
* The @image will be kept so that API users can get retrieve it e.g.
* for debugging purposes.
*
* Returns: %TRUE on success
*/
gboolean
fpi_print_add_from_image (FpPrint *print,
FpImage *image,
GError **error)
{
GPtrArray *minutiae;
struct fp_minutiae _minutiae;
struct xyt_struct *xyt;
if (print->type != FP_PRINT_NBIS || !image)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
"Cannot add print data from image!");
return FALSE;
}
minutiae = fp_image_get_minutiae (image);
if (!minutiae || minutiae->len == 0)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
"No minutiae found in image or not yet detected!");
return FALSE;
}
_minutiae.num = minutiae->len;
_minutiae.list = (struct fp_minutia **) minutiae->pdata;
_minutiae.alloc = minutiae->len;
xyt = g_new0 (struct xyt_struct, 1);
minutiae_to_xyt (&_minutiae, image->width, image->height, xyt);
g_ptr_array_add (print->prints, xyt);
g_clear_object (&print->image);
print->image = g_object_ref (image);
g_object_notify_by_pspec (G_OBJECT (print), properties[PROP_IMAGE]);
return TRUE;
}
/**
* fpi_print_bz3_match:
* @template: A #FpPrint containing one or more prints
* @print: A newly scanned #FpPrint to test
* @bz3_threshold: The BZ3 match threshold
* @error: Return location for error
*
* Match the newly scanned @print (containing exactly one print) against the
* prints contained in @template which will have been stored during enrollment.
*
* Both @template and @print need to be of type #FP_PRINT_NBIS for this to
* work.
*
* Returns: Whether the prints match, @error will be set if #FPI_MATCH_ERROR is returned
*/
FpiMatchResult
fpi_print_bz3_match (FpPrint *template, FpPrint *print, gint bz3_threshold, GError **error)
{
struct xyt_struct *pstruct;
gint probe_len;
gint i;
/* XXX: Use a different error type? */
if (template->type != FP_PRINT_NBIS || print->type != FP_PRINT_NBIS)
{
*error = fpi_device_error_new_msg (FP_DEVICE_ERROR_NOT_SUPPORTED,
"It is only possible to match NBIS type print data");
return FPI_MATCH_ERROR;
}
if (print->prints->len != 1)
{
*error = fpi_device_error_new_msg (FP_DEVICE_ERROR_GENERAL,
"New print contains more than one print!");
return FPI_MATCH_ERROR;
}
pstruct = g_ptr_array_index (print->prints, 0);
probe_len = bozorth_probe_init (pstruct);
for (i = 0; i < template->prints->len; i++)
{
struct xyt_struct *gstruct;
gint score;
gstruct = g_ptr_array_index (template->prints, i);
score = bozorth_to_gallery (probe_len, pstruct, gstruct);
fp_dbg ("score %d", score);
if (score >= bz3_threshold)
return FPI_MATCH_SUCCESS;
}
return FPI_MATCH_FAIL;
}
/**
* fp_print_compatible:
* @self: A #FpPrint
* @device: A #FpDevice
*
* Tests whether the prints is compatible with the given device.
*
* Returns: %TRUE if the print is compatible with the device
*/
gboolean
fp_print_compatible (FpPrint *self, FpDevice *device)
{
g_return_val_if_fail (FP_IS_PRINT (self), FALSE);
g_return_val_if_fail (FP_IS_DEVICE (device), FALSE);
if (g_strcmp0 (self->driver, fp_device_get_driver (device)))
return FALSE;
if (g_strcmp0 (self->device_id, fp_device_get_device_id (device)))
return FALSE;
return TRUE;
}
/**
* fp_print_equal:
* @self: First #FpPrint
* @other: Second #FpPrint
*
* Tests whether the prints can be considered equal. This only compares the
* actual information about the print, not the metadata.
*
* Returns: %TRUE if the prints are equal
*/
gboolean
fp_print_equal (FpPrint *self, FpPrint *other)
{
g_return_val_if_fail (FP_IS_PRINT (self), FALSE);
g_return_val_if_fail (FP_IS_PRINT (other), FALSE);
g_return_val_if_fail (self->type != FP_PRINT_UNDEFINED, FALSE);
g_return_val_if_fail (other->type != FP_PRINT_UNDEFINED, FALSE);
if (self->type != other->type)
return FALSE;
if (g_strcmp0 (self->driver, other->driver))
return FALSE;
if (g_strcmp0 (self->device_id, other->device_id))
return FALSE;
if (self->type == FP_PRINT_RAW)
{
return g_variant_equal (self->data, other->data);
}
else if (self->type == FP_PRINT_NBIS)
{
gint i;
if (self->prints->len != other->prints->len)
return FALSE;
for (i = 0; i < self->prints->len; i++)
{
struct xyt_struct *a = g_ptr_array_index (self->prints, i);
struct xyt_struct *b = g_ptr_array_index (other->prints, i);
if (memcmp (a, b, sizeof (struct xyt_struct)) != 0)
return FALSE;
}
return TRUE;
}
else
{
g_assert_not_reached ();
}
}
#define FP_PRINT_VARIANT_TYPE G_VARIANT_TYPE ("(issbymsmsia{sv}v)")
G_STATIC_ASSERT (sizeof (((struct xyt_struct *) NULL)->xcol[0]) == 4);
/**
* fp_print_serialize:
* @print: A #FpPrint
* @data: (array length=length) (transfer full) (out): Return location for data pointer
* @length: (transfer full) (out): Length of @data
* @error: Return location for error
*
* Serialize a print definition for permanent storage. Note that this is
* lossy in the sense that e.g. the image data is discarded.
*
* Returns: (type void): %TRUE on success
*/
gboolean
fp_print_serialize (FpPrint *print,
guchar **data,
gsize *length,
GError **error)
{
g_autoptr(GVariant) result = NULL;
GVariantBuilder builder = G_VARIANT_BUILDER_INIT (FP_PRINT_VARIANT_TYPE);
gsize len;
g_assert (data);
g_assert (length);
g_variant_builder_add (&builder, "i", print->type);
g_variant_builder_add (&builder, "s", print->driver);
g_variant_builder_add (&builder, "s", print->device_id);
g_variant_builder_add (&builder, "b", print->device_stored);
/* Metadata */
g_variant_builder_add (&builder, "y", print->finger);
g_variant_builder_add (&builder, "ms", print->username);
g_variant_builder_add (&builder, "ms", print->description);
if (print->enroll_date && g_date_valid (print->enroll_date))
g_variant_builder_add (&builder, "i", g_date_get_julian (print->enroll_date));
else
g_variant_builder_add (&builder, "i", G_MININT32);
/* Unused a{sv} for expansion */
g_variant_builder_open (&builder, G_VARIANT_TYPE_VARDICT);
g_variant_builder_close (&builder);
/* Insert NBIS print data for type NBIS, otherwise the GVariant directly */
if (print->type == FP_PRINT_NBIS)
{
GVariantBuilder nested = G_VARIANT_BUILDER_INIT (G_VARIANT_TYPE ("(a(aiaiai))"));
gint i;
g_variant_builder_open (&nested, G_VARIANT_TYPE ("a(aiaiai)"));
for (i = 0; i < print->prints->len; i++)
{
struct xyt_struct *xyt = g_ptr_array_index (print->prints, i);
gint j;
gint32 *col = g_new (gint32, xyt->nrows);
g_variant_builder_open (&nested, G_VARIANT_TYPE ("(aiaiai)"));
for (j = 0; j < xyt->nrows; j++)
col[j] = GINT32_TO_LE (xyt->xcol[j]);
g_variant_builder_add_value (&nested,
g_variant_new_fixed_array (G_VARIANT_TYPE_INT32,
col,
xyt->nrows,
sizeof (col[0])));
for (j = 0; j < xyt->nrows; j++)
col[j] = GINT32_TO_LE (xyt->ycol[j]);
g_variant_builder_add_value (&nested,
g_variant_new_fixed_array (G_VARIANT_TYPE_INT32,
col,
xyt->nrows,
sizeof (col[0])));
for (j = 0; j < xyt->nrows; j++)
col[j] = GINT32_TO_LE (xyt->thetacol[j]);
g_variant_builder_add_value (&nested,
g_variant_new_fixed_array (G_VARIANT_TYPE_INT32,
col,
xyt->nrows,
sizeof (col[0])));
g_variant_builder_close (&nested);
g_free (col);
}
g_variant_builder_close (&nested);
g_variant_builder_add (&builder, "v", g_variant_builder_end (&nested));
}
else
{
g_variant_builder_add (&builder, "v", g_variant_new_variant (print->data));
}
result = g_variant_builder_end (&builder);
if (G_BYTE_ORDER == G_BIG_ENDIAN)
{
GVariant *tmp;
tmp = g_variant_byteswap (result);
g_variant_unref (result);
result = tmp;
}
len = g_variant_get_size (result);
/* Add 3 bytes of header */
len += 3;
*data = g_malloc (len);
*length = len;
(*data)[0] = (guchar) 'F';
(*data)[1] = (guchar) 'P';
(*data)[2] = (guchar) '3';
g_variant_get_data (result);
g_variant_store (result, (*data) + 3);
return TRUE;
}
/**
* fp_print_deserialize:
* @data: (array length=length): The binary data
* @length: Length of the data
* @error: Return location for error
*
* Deserialize a print definition from permanent storage.
*
* Returns: (transfer full): A newly created #FpPrint on success
*/
FpPrint *
fp_print_deserialize (const guchar *data,
gsize length,
GError **error)
{
g_autoptr(FpPrint) result = NULL;
g_autoptr(GVariant) raw_value = NULL;
g_autoptr(GVariant) value = NULL;
g_autoptr(GVariant) print_data = NULL;
guchar *aligned_data = NULL;
GDate *date = NULL;
guint8 finger_int8;
FpFinger finger;
g_autofree gchar *username = NULL;
g_autofree gchar *description = NULL;
gint julian_date;
FpPrintType type;
const gchar *driver;
const gchar *device_id;
gboolean device_stored;
g_assert (data);
g_assert (length > 3);
if (memcmp (data, "FP3", 3) != 0)
goto invalid_format;
/* NOTE:
* We make sure that we have no variant left over from the parsing at the end
* of this function (meaning we don't need to keep the data around.
*/
/* To support GLIB < 2.60 we need to make sure that the memory is aligned correctly.
* We also need to copy the backing store for the raw data that we may keep for
* longer. */
aligned_data = g_malloc (length - 3);
memcpy (aligned_data, data + 3, length - 3);
raw_value = g_variant_new_from_data (FP_PRINT_VARIANT_TYPE,
aligned_data, length - 3,
FALSE, g_free, aligned_data);
if (!raw_value)
goto invalid_format;
if (G_BYTE_ORDER == G_BIG_ENDIAN)
value = g_variant_byteswap (raw_value);
else
value = g_variant_get_normal_form (raw_value);
g_variant_get (value,
"(i&s&sbymsmsi@a{sv}v)",
&type,
&driver,
&device_id,
&device_stored,
&finger_int8,
&username,
&description,
&julian_date,
NULL,
&print_data);
finger = finger_int8;
/* Assume data is valid at this point if the values are somewhat sane. */
if (type == FP_PRINT_NBIS)
{
g_autoptr(GVariant) prints = g_variant_get_child_value (print_data, 0);
gint i;
result = g_object_new (FP_TYPE_PRINT,
"driver", driver,
"device-id", device_id,
"device-stored", device_stored,
NULL);
fpi_print_set_type (result, FP_PRINT_NBIS);
for (i = 0; i < g_variant_n_children (prints); i++)
{
g_autofree struct xyt_struct *xyt = g_new0 (struct xyt_struct, 1);
const gint32 *xcol, *ycol, *thetacol;
gsize xlen, ylen, thetalen;
g_autoptr(GVariant) xyt_data = NULL;
GVariant *child;
xyt_data = g_variant_get_child_value (prints, i);
child = g_variant_get_child_value (xyt_data, 0);
xcol = g_variant_get_fixed_array (child, &xlen, sizeof (gint32));
g_variant_unref (child);
child = g_variant_get_child_value (xyt_data, 1);
ycol = g_variant_get_fixed_array (child, &ylen, sizeof (gint32));
g_variant_unref (child);
child = g_variant_get_child_value (xyt_data, 2);
thetacol = g_variant_get_fixed_array (child, &thetalen, sizeof (gint32));
g_variant_unref (child);
if (xlen != ylen || xlen != thetalen)
goto invalid_format;
if (xlen > G_N_ELEMENTS (xyt->xcol))
goto invalid_format;
xyt->nrows = xlen;
memcpy (xyt->xcol, xcol, sizeof (xcol[0]) * xlen);
memcpy (xyt->ycol, ycol, sizeof (xcol[0]) * xlen);
memcpy (xyt->thetacol, thetacol, sizeof (xcol[0]) * xlen);
g_ptr_array_add (result->prints, g_steal_pointer (&xyt));
}
}
else if (type == FP_PRINT_RAW)
{
g_autoptr(GVariant) fp_data = g_variant_get_child_value (print_data, 0);
result = g_object_new (FP_TYPE_PRINT,
"fp-type", type,
"driver", driver,
"device-id", device_id,
"device-stored", device_stored,
"fp-data", fp_data,
NULL);
}
else
{
g_warning ("Invalid print type: 0x%X", type);
goto invalid_format;
}
date = g_date_new_julian (julian_date);
g_object_set (result,
"finger", finger,
"username", username,
"description", description,
"enroll_date", date,
NULL);
g_date_free (date);
return g_steal_pointer (&result);
invalid_format:
*error = g_error_new_literal (G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
"Data could not be parsed");
return FALSE;
}
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