bolt-device.c 28.5 KB
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/*
 * Copyright © 2017 Red Hat, Inc
 *
 * This program 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, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *       Christian J. Kellner <christian@kellner.me>
 */

#include "config.h"

#include "bolt-device.h"
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#include "bolt-enums.h"
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#include "bolt-error.h"
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#include "bolt-io.h"
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#include "bolt-log.h"
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#include "bolt-manager.h"
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#include "bolt-names.h"
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#include "bolt-store.h"
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#include "bolt-str.h"
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#include "bolt-sysfs.h"
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#include "bolt-time.h"
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#include <dirent.h>
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#include <libudev.h>

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/* dbus property setter */
static gboolean handle_set_label (BoltExported *obj,
                                  const char   *name,
                                  const GValue *value,
                                  GError      **error);

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/* dbus method calls */
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static gboolean    handle_authorize (BoltExported          *object,
                                     GVariant              *params,
                                     GDBusMethodInvocation *invocation);
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struct _BoltDevice
{
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  BoltExported object;
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  /* device props */
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  char          *dbus_path;
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  char          *uid;
  char          *name;
  char          *vendor;
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  BoltDeviceType type;
  BoltStatus     status;
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  /* when device is attached */
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  char        *syspath;
  BoltSecurity security;
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  char        *parent;
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  guint64      conntime;
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  guint64      authtime;
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  /* when device is stored */
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  BoltStore   *store;
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  BoltPolicy   policy;
  BoltKeyState key;
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  guint64      storetime;
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  char        *label;
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};


enum {
  PROP_0,

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  PROP_STORE,

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  /* exported properties start here, */
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  PROP_UID,
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  PROP_NAME,
  PROP_VENDOR,
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  PROP_TYPE,
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  PROP_STATUS,
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  PROP_PARENT,
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  PROP_SYSFS,
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  PROP_SECURITY,
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  PROP_CONNTIME,
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  PROP_AUTHTIME,
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  PROP_STORED,
  PROP_POLICY,
  PROP_HAVE_KEY,
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  PROP_STORETIME,
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  PROP_LABEL,
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  PROP_LAST,
  PROP_EXPORTED = PROP_UID
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};

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static GParamSpec *props[PROP_LAST] = {NULL, };
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enum {
  SIGNAL_STATUS_CHANGED,
  SIGNAL_LAST
};

static guint signals[SIGNAL_LAST] = {0};

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G_DEFINE_TYPE (BoltDevice,
               bolt_device,
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               BOLT_TYPE_EXPORTED)
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static void
bolt_device_finalize (GObject *object)
{
  BoltDevice *dev = BOLT_DEVICE (object);

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  g_clear_object (&dev->store);

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  g_free (dev->dbus_path);

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  g_free (dev->uid);
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  g_free (dev->name);
  g_free (dev->vendor);
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  g_free (dev->parent);
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  g_free (dev->syspath);
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  g_free (dev->label);
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  G_OBJECT_CLASS (bolt_device_parent_class)->finalize (object);
}

static void
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bolt_device_init (BoltDevice *dev)
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{
}

static void
bolt_device_get_property (GObject    *object,
                          guint       prop_id,
                          GValue     *value,
                          GParamSpec *pspec)
{
  BoltDevice *dev = BOLT_DEVICE (object);

  switch (prop_id)
    {
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    case PROP_STORE:
      g_value_set_object (value, dev->store);
      break;

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    case PROP_UID:
      g_value_set_string (value, dev->uid);
      break;

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    case PROP_NAME:
      g_value_set_string (value, dev->name);
      break;

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    case PROP_TYPE:
      g_value_set_uint (value, dev->type);
      break;

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    case PROP_VENDOR:
      g_value_set_string (value, dev->vendor);
      break;

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    case PROP_STATUS:
      g_value_set_uint (value, dev->status);
      break;

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    case PROP_PARENT:
      g_value_set_string (value, dev->parent);
      break;

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    case PROP_SYSFS:
      g_value_set_string (value, dev->syspath);
      break;

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    case PROP_SECURITY:
      g_value_set_uint (value, dev->security);
      break;

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    case PROP_CONNTIME:
      g_value_set_uint64 (value, dev->conntime);
      break;

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    case PROP_AUTHTIME:
      g_value_set_uint64 (value, dev->authtime);
      break;

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    case PROP_STORED:
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      g_value_set_boolean (value, dev->store != NULL);
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      break;

    case PROP_POLICY:
      g_value_set_uint (value, dev->policy);
      break;

    case PROP_HAVE_KEY:
      g_value_set_uint (value, dev->key);
      break;

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    case PROP_STORETIME:
      g_value_set_uint64 (value, dev->storetime);
      break;

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    case PROP_LABEL:
      g_value_set_string (value, dev->label);
      break;

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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
    }
}

static void
bolt_device_set_property (GObject      *object,
                          guint         prop_id,
                          const GValue *value,
                          GParamSpec   *pspec)
{
  BoltDevice *dev = BOLT_DEVICE (object);

  switch (prop_id)
    {
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    case PROP_STORE:
      dev->store = g_value_dup_object (value);
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      g_object_notify_by_pspec (object, props[PROP_STORED]);
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      break;

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    case PROP_UID:
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      g_return_if_fail (dev->uid == NULL);
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      dev->uid = g_value_dup_string (value);
      break;

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    case PROP_NAME:
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      g_clear_pointer (&dev->name, g_free);
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      dev->name = g_value_dup_string (value);
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      break;

    case PROP_VENDOR:
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      g_clear_pointer (&dev->vendor, g_free);
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      dev->vendor = g_value_dup_string (value);
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      break;

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    case PROP_TYPE:
      dev->type = g_value_get_uint (value);
      break;

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    case PROP_STATUS:
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      {
        BoltStatus old = dev->status;
        BoltStatus now = g_value_get_uint (value);
        if (old == now)
          break;

        dev->status = now;
        g_signal_emit (dev,
                       signals[SIGNAL_STATUS_CHANGED],
                       0,
                       old);
        break;
      }
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    case PROP_PARENT:
      g_clear_pointer (&dev->parent, g_free);
      dev->parent = g_value_dup_string (value);
      break;

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    case PROP_SYSFS:
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      g_clear_pointer (&dev->syspath, g_free);
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      dev->syspath = g_value_dup_string (value);
      break;
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    case PROP_SECURITY:
      dev->security = g_value_get_uint (value);
      break;
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    case PROP_CONNTIME:
      dev->conntime = g_value_get_uint64 (value);
      break;

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    case PROP_AUTHTIME:
      dev->authtime = g_value_get_uint64 (value);
      break;

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    case PROP_POLICY:
      dev->policy = g_value_get_uint (value);
      break;

    case PROP_HAVE_KEY:
      dev->key = g_value_get_uint (value);
      break;

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    case PROP_STORETIME:
      dev->storetime = g_value_get_uint64 (value);
      break;

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    case PROP_LABEL:
      g_clear_pointer (&dev->label, g_free);
      dev->label = g_value_dup_string (value);
      break;

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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
    }
}


static void
bolt_device_class_init (BoltDeviceClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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  BoltExportedClass *exported_class = BOLT_EXPORTED_CLASS (klass);
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  gobject_class->finalize = bolt_device_finalize;

  gobject_class->get_property = bolt_device_get_property;
  gobject_class->set_property = bolt_device_set_property;

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  props[PROP_STORE] =
    g_param_spec_object ("store",
                         NULL, NULL,
                         BOLT_TYPE_STORE,
                         G_PARAM_READWRITE |
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                         G_PARAM_STATIC_STRINGS);
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  props[PROP_UID] =
    g_param_spec_string ("uid",
                         "Uid", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_NAME] =
    g_param_spec_string ("name",
                         "Name", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_VENDOR] =
    g_param_spec_string ("vendor",
                         "Vendor", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);

  props[PROP_TYPE] =
    g_param_spec_uint ("type",
                       "Type", NULL,
                       BOLT_DEVICE_HOST,
                       BOLT_DEVICE_PERIPHERAL,
                       BOLT_DEVICE_PERIPHERAL,
                       G_PARAM_READWRITE |
                       G_PARAM_CONSTRUCT_ONLY |
                       G_PARAM_STATIC_STRINGS);

  props[PROP_STATUS] =
    g_param_spec_uint ("status",
                       "Status", NULL,
                       0,
                       BOLT_STATUS_LAST,
                       BOLT_STATUS_DISCONNECTED,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);

  props[PROP_PARENT] =
    g_param_spec_string ("parent",
                         "Parent", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_SYSFS] =
    g_param_spec_string ("sysfs-path",
                         "SysfsPath", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_SECURITY] =
    g_param_spec_uint ("security",
                       "Security", NULL,
                       0,
                       BOLT_SECURITY_LAST,
                       BOLT_SECURITY_NONE,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);

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  props[PROP_CONNTIME] =
    g_param_spec_uint64 ("conntime",
                         "ConnectTime", NULL,
                         0, G_MAXUINT64, 0,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  props[PROP_AUTHTIME] =
    g_param_spec_uint64 ("authtime",
                         "AuthorizeTime", NULL,
                         0, G_MAXUINT64, 0,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  props[PROP_STORED] =
    g_param_spec_boolean ("stored",
                          "Stored", NULL,
                          FALSE,
                          G_PARAM_READWRITE |
                          G_PARAM_STATIC_STRINGS);

  props[PROP_POLICY] =
    g_param_spec_uint ("policy",
                       "Policy", NULL,
                       0,
                       BOLT_POLICY_LAST,
                       BOLT_POLICY_DEFAULT,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);

  props[PROP_HAVE_KEY] =
    g_param_spec_uint ("key",
                       "Key", NULL,
                       0,
                       BOLT_KEY_NEW,
                       BOLT_KEY_MISSING,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);
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  props[PROP_STORETIME] =
    g_param_spec_uint64 ("storetime",
                         "StoreTime", NULL,
                         0, G_MAXUINT64, 0,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  props[PROP_LABEL] =
    g_param_spec_string ("label",
                         "Label", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  g_object_class_install_properties (gobject_class,
                                     PROP_LAST,
                                     props);
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  signals[SIGNAL_STATUS_CHANGED] =
    g_signal_new ("status-changed",
                  G_TYPE_FROM_CLASS (gobject_class),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  NULL,
                  G_TYPE_NONE,
                  1, BOLT_TYPE_STATUS);

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  bolt_exported_class_set_interface_info (exported_class,
                                          BOLT_DBUS_DEVICE_INTERFACE,
                                          "/boltd/org.freedesktop.bolt.xml");

  bolt_exported_class_export_properties (exported_class,
                                         PROP_EXPORTED,
                                         PROP_LAST,
                                         props);

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  bolt_exported_class_property_setter (exported_class,
                                       props[PROP_LABEL],
                                       handle_set_label);

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  bolt_exported_class_export_method (exported_class,
                                     "Authorize",
                                     handle_authorize);

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}
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/* internal methods */

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static const char *
read_sysattr_name (struct udev_device *udev, const char *attr, GError **error)
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{
  g_autofree char *s = NULL;
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  const char *v;
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  s = g_strdup_printf ("%s_name", attr);
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  v = udev_device_get_sysattr_value (udev, s);

  if (v != NULL)
    return v;

  v = udev_device_get_sysattr_value (udev, attr);
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  if (v == NULL)
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    g_set_error (error,
                 BOLT_ERROR, BOLT_ERROR_UDEV,
                 "failed to get sysfs attr: %s", attr);
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  return v;
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}

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static gint
read_sysfs_attr_int (struct udev_device *device, const char *attr)
{
  const char *str;
  char *end;
  gint64 val;

  str = udev_device_get_sysattr_value (device, attr);

  if (str == NULL)
    return 0;

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  val = g_ascii_strtoll (str, &end, 0);
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  if (str == end)
    return 0;

  if (val > G_MAXINT || val < G_MININT)
    {
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      bolt_warn ("value read from sysfs outside of gint's range.");
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      val = 0;
    }

  return (gint) val;
}

static gboolean
string_nonzero (const char *str)
{
  return str != NULL && str[0] != '\0';
}

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static struct udev_device *
bolt_sysfs_get_parent (struct udev_device *udev,
                       GError            **error)
{
  struct udev_device * parent = udev_device_get_parent (udev);

  if (parent == NULL)
    g_set_error (error, BOLT_ERROR, BOLT_ERROR_UDEV,
                 "could not get parent udev device");

  return parent;
}

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static const char *
bolt_sysfs_get_parent_uid (struct udev_device *udev)
{
  struct udev_device *parent;
  const char *uid = NULL;

  parent = udev_device_get_parent (udev);
  if (parent)
    uid = udev_device_get_sysattr_value (parent, "unique_id");
  return uid;
}

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typedef enum BoltStatTime {
  BOLT_ST_ATIME,
  BOLT_ST_CTIME,
  BOLT_ST_MTIME
} BoltStatTime;

static gint64
bolt_sysfs_device_get_time (struct udev_device *udev,
                            BoltStatTime        st)
{
  const char *path;
  struct stat sb;
  gint64 ms;
  int r;

  path = udev_device_get_syspath (udev);

  if (path == NULL)
    return 0;

  r = lstat (path, &sb);

  if (r == -1)
    return 0;

  switch (st)
    {
    case BOLT_ST_CTIME:
      ms = (gint64) sb.st_ctim.tv_sec;
      break;

    case BOLT_ST_ATIME:
      ms = (gint64) sb.st_atim.tv_sec;
      break;

    case BOLT_ST_MTIME:
      ms = (gint64) sb.st_mtim.tv_sec;
      break;

    default:
      bolt_warn_enum_unhandled (BoltStatTime, st);
      return 0;
    }

  if (ms < 0)
    ms = 0;

  return ms;
}

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static BoltStatus
bolt_status_from_udev (struct udev_device *udev)
{
  gint authorized;
  const char *key;
  gboolean have_key;

  authorized = read_sysfs_attr_int (udev, "authorized");

  if (authorized == 2)
    return BOLT_STATUS_AUTHORIZED_SECURE;

  key = udev_device_get_sysattr_value (udev, "key");
  have_key = string_nonzero (key);

  if (authorized == 1)
    {
      if (have_key)
        return BOLT_STATUS_AUTHORIZED_NEWKEY;
      else
        return BOLT_STATUS_AUTHORIZED;
    }
  else if (authorized == 0 && have_key)
    {
      return BOLT_STATUS_AUTH_ERROR;
    }

  return BOLT_STATUS_CONNECTED;
}

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static const char *
cleanup_name (const char *name,
              const char *vendor,
              GError    **error)
{
  g_return_val_if_fail (vendor != NULL, NULL);
  g_return_val_if_fail (name != NULL, NULL);

  /* some devices have the vendor name as a prefix */
  if (!g_str_has_prefix (name, vendor))
    return name;

  name += strlen (vendor);

  while (g_ascii_isspace (*name))
    name++;

  if (*name == '\0')
    {
      g_set_error_literal (error,
                           BOLT_ERROR, BOLT_ERROR_UDEV,
                           "device has empty name after cleanup");
      return NULL;
    }

  return name;
}

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/*  device authorization */

typedef struct
{
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  BoltAuth *auth;
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  /* the outer callback  */
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  GAsyncReadyCallback callback;
  gpointer            user_data;
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} AuthData;

static void
auth_data_free (gpointer data)
{
  AuthData *auth = data;

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  g_clear_object (&auth->auth);
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  g_slice_free (AuthData, auth);
}

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static gboolean
authorize_device_internal (BoltDevice *dev,
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                           BoltAuth   *auth,
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                           GError    **error)
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{
  g_autoptr(DIR) devdir = NULL;
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  BoltKey *key;
  BoltSecurity level;
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  gboolean ok;

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  key = bolt_auth_get_key (auth);
  level = bolt_auth_get_level (auth);

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  devdir = bolt_opendir (dev->syspath, error);
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  if (devdir == NULL)
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    return FALSE;
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  ok = bolt_verify_uid (dirfd (devdir), dev->uid, error);
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  if (!ok)
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    return FALSE;

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  if (key)
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    {
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      int keyfd;

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      bolt_debug (LOG_DEV (dev), "writing key");
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      keyfd = bolt_openat (dirfd (devdir), "key", O_WRONLY | O_CLOEXEC, error);
      if (keyfd < 0)
        return FALSE;

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      ok = bolt_key_write_to (key, keyfd, &level, error);
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      close (keyfd);
      if (!ok)
        return FALSE;
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    }

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  bolt_debug (LOG_DEV (dev), "writing authorization");
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  ok = bolt_write_char_at (dirfd (devdir),
                           "authorized",
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                           level,
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                           error);
  return ok;
}

static void
authorize_in_thread (GTask        *task,
                     gpointer      source,
                     gpointer      context,
                     GCancellable *cancellable)
{
  g_autoptr(GError) error = NULL;
  BoltDevice *dev = source;
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  AuthData *auth_data = context;
  BoltAuth *auth = auth_data->auth;
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  gboolean ok;

  ok = authorize_device_internal (dev, auth, &error);
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  if (!ok)
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    g_task_return_new_error (task, BOLT_ERROR, BOLT_ERROR_FAILED,
                             "failed to authorize device: %s",
                             error->message);
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  else
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    g_task_return_boolean (task, TRUE);
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}

static void
authorize_thread_done (GObject      *object,
                       GAsyncResult *res,
                       gpointer      user_data)
{
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  g_autoptr(GError) error = NULL;
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  BoltDevice *dev = BOLT_DEVICE (object);
  GTask *task = G_TASK (res);
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  BoltStatus status;
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  AuthData *auth_data;
  BoltAuth *auth;
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  gboolean ok;
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  guint64 now;
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  auth_data = g_task_get_task_data (task);
  auth = auth_data->auth;

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  ok = g_task_propagate_boolean (task, &error);

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  if (!ok)
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    bolt_auth_return_error (auth, &error);

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  now = bolt_now_in_seconds ();
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  status = bolt_auth_to_status (auth);
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  g_object_set (dev,
                "status", status,
                "authtime", now,
                NULL);
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  if (auth_data->callback)
    auth_data->callback (G_OBJECT (dev),
                         G_ASYNC_RESULT (auth),
                         auth_data->user_data);
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}

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void
bolt_device_authorize (BoltDevice         *dev,
                       BoltAuth           *auth,
                       GAsyncReadyCallback callback,
                       gpointer            user_data)
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{
  AuthData *auth_data;
  GTask *task;

812 813
  g_object_set (auth, "device", dev, NULL);

814 815 816
  if (dev->status != BOLT_STATUS_CONNECTED &&
      dev->status != BOLT_STATUS_AUTH_ERROR)
    {
817 818
      bolt_auth_return_new_error (auth, BOLT_ERROR, BOLT_ERROR_FAILED,
                                  "wrong device state: %u", dev->status);
819

820 821
      if (callback)
        callback (G_OBJECT (dev), G_ASYNC_RESULT (auth), user_data);
822

823
      return;
824 825 826
    }

  task = g_task_new (dev, NULL, authorize_thread_done, NULL);
827 828 829
  auth_data = g_slice_new (AuthData);
  auth_data->callback = callback;
  auth_data->user_data = user_data;
830
  auth_data->auth = g_object_ref (auth);
831 832
  g_task_set_task_data (task, auth_data, auth_data_free);

833
  g_object_set (dev, "status", BOLT_STATUS_AUTHORIZING, NULL);
834 835 836 837 838

  g_task_run_in_thread (task, authorize_in_thread);
  g_object_unref (task);
}

839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889
/* dbus property setter */

static gboolean
handle_set_label (BoltExported *obj,
                  const char   *name,
                  const GValue *value,
                  GError      **error)
{
  g_autofree char *nick = NULL;
  g_autofree char *old = NULL;
  BoltDevice *dev = BOLT_DEVICE (obj);
  const char *str = g_value_get_string (value);
  gboolean ok;

  nick = bolt_strdup_validate (str);

  if (nick == NULL)
    {
      g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
                           "string is invalid");
      return FALSE;
    }
  else if (strlen (nick) > 255)
    {
      g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
                           "string is too long");
      return FALSE;
    }

  if (dev->store == NULL)
    {
      g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
                           "device is not stored");
      return FALSE;
    }

  old = dev->label;
  dev->label = g_steal_pointer (&nick);

  ok = bolt_store_put_device (dev->store, dev, dev->policy, NULL, error);

  if (!ok)
    {
      bolt_warn_err (*error, LOG_DEV (dev), "failed to store device");

      nick = dev->label;
      dev->label = g_steal_pointer (&old);
    }

  return ok;
}
890 891 892 893

/* dbus methods */

static void
894 895 896
handle_authorize_done (GObject      *device,
                       GAsyncResult *res,
                       gpointer      user_data)
897
{
898 899 900 901 902 903 904
  GDBusMethodInvocation *inv;
  GError *error = NULL;
  BoltAuth *auth;
  gboolean ok;

  inv  = user_data;
  auth = BOLT_AUTH (res);
905

906
  ok = bolt_auth_check (auth, &error);
907
  if (ok)
908
    g_dbus_method_invocation_return_value (inv, g_variant_new ("()"));
909
  else
910
    g_dbus_method_invocation_take_error (inv, error);
911 912 913
}

static gboolean
914 915 916
handle_authorize (BoltExported          *object,
                  GVariant              *params,
                  GDBusMethodInvocation *inv)
917 918 919
{
  BoltDevice *dev = BOLT_DEVICE (object);
  GError *error = NULL;
920 921 922
  BoltAuth *auth;
  BoltSecurity level;
  BoltKey *key;
923

924 925
  level = dev->security;
  key = NULL;
926

927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942
  if (level == BOLT_SECURITY_SECURE)
    {
      if (dev->key)
        key = bolt_store_get_key (dev->store, dev->uid, &error);
      else
        level = BOLT_SECURITY_USER;
    }

  if (level == BOLT_SECURITY_SECURE && key == NULL)
    {
      g_dbus_method_invocation_take_error (inv, error);
      return TRUE;
    }

  auth = bolt_auth_new (dev, level, key);
  bolt_device_authorize (dev, auth, handle_authorize_done, inv);
943 944 945 946

  return TRUE;
}

947 948 949
/* public methods */

BoltDevice *
950
bolt_device_new_for_udev (struct udev_device *udev,
951 952
                          GError            **error)
{
953
  struct udev_device *parent_dev;
954 955 956 957
  const char *uid;
  const char *name;
  const char *vendor;
  const char *syspath;
958
  const char *parent;
959 960
  BoltSecurity security;
  BoltStatus status;
961
  BoltDeviceType type;
962
  BoltDevice *dev;
963
  guint64 ct, at;
964

965 966 967 968 969 970 971
  uid = udev_device_get_sysattr_value (udev, "unique_id");
  if (udev == NULL)
    {
      g_set_error (error, BOLT_ERROR, BOLT_ERROR_UDEV,
                   "could not get unique_id for udev");
      return NULL;
    }
972

973 974
  syspath = udev_device_get_syspath (udev);
  g_return_val_if_fail (syspath != NULL, NULL);
975

976
  name = read_sysattr_name (udev, "device", error);
977 978 979
  if (name == NULL)
    return NULL;

980
  vendor = read_sysattr_name (udev, "vendor", error);
981 982
  if (vendor == NULL)
    return NULL;
983

984 985 986 987
  name = cleanup_name (name, vendor, error);
  if (name == NULL)
    return NULL;

988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002
  parent_dev = bolt_sysfs_get_parent (udev, error);
  if (parent_dev == NULL)
    return NULL;

  if (bolt_sysfs_device_is_domain (parent_dev))
    {
      parent = NULL;
      type = BOLT_DEVICE_HOST;
    }
  else
    {
      parent = udev_device_get_sysattr_value (parent_dev, "unique_id");
      type = BOLT_DEVICE_PERIPHERAL;
    }

1003 1004
  ct = (guint64) bolt_sysfs_device_get_time (udev, BOLT_ST_CTIME);

1005
  parent = bolt_sysfs_get_parent_uid (udev);
1006
  security = bolt_sysfs_security_for_device (udev, NULL);
1007 1008 1009
  status = bolt_status_from_udev (udev);
  at = bolt_status_is_authorized (status) ? ct : 0;

1010
  dev = g_object_new (BOLT_TYPE_DEVICE,
1011 1012 1013
                      "uid", uid,
                      "name", name,
                      "vendor", vendor,
1014
                      "type", type,
1015
                      "status", status,
1016
                      "sysfs-path", syspath,
1017
                      "parent", parent,
1018
                      "conntime", ct,
1019 1020
                      "authtime", at,
                      "security", security,
1021 1022
                      NULL);

1023

1024 1025 1026
  return dev;
}

1027
const char *
1028 1029 1030 1031
bolt_device_export (BoltDevice      *device,
                    GDBusConnection *connection,
                    GError         **error)
{
1032
  const char *path;
1033
  gboolean ok;
1034 1035

  g_return_val_if_fail (BOLT_IS_DEVICE (device), FALSE);
1036

1037
  path = bolt_device_get_object_path (device);
1038

1039 1040 1041 1042 1043
  ok = bolt_exported_export (BOLT_EXPORTED (device),
                             connection,
                             path,
                             error);

1044
  return ok ? path : NULL;
1045 1046 1047 1048 1049
}

void
bolt_device_unexport (BoltDevice *device)
{
1050
  bolt_exported_unexport (BOLT_EXPORTED (device));
1051
}
1052

1053 1054 1055 1056 1057 1058

BoltStatus
bolt_device_connected (BoltDevice         *dev,
                       struct udev_device *udev)
{
  const char *syspath;
1059
  const char *parent;
1060 1061
  BoltSecurity security;
  BoltStatus status;
1062
  guint64 ct, at;
1063 1064 1065

  syspath = udev_device_get_syspath (udev);
  status = bolt_status_from_udev (udev);
1066
  security = bolt_sysfs_security_for_device (udev, NULL);
1067
  parent = bolt_sysfs_get_parent_uid (udev);
1068

1069
  ct = (guint64) bolt_sysfs_device_get_time (udev, BOLT_ST_CTIME);
1070 1071
  at = bolt_status_is_authorized (status) ? ct : 0;

1072

1073
  g_object_set (G_OBJECT (dev),
1074
                "parent", parent,
1075 1076 1077
                "sysfs-path", syspath,
                "security", security,
                "status", status,
1078
                "conntime", ct,
1079
                "authtime", at,
1080 1081
                NULL);

1082
  bolt_info (LOG_DEV (dev), "parent is %.13s...", dev->parent);
1083

1084 1085 1086 1087 1088 1089 1090
  return status;
}

BoltStatus
bolt_device_disconnected (BoltDevice *dev)
{
  g_object_set (G_OBJECT (dev),
1091
                "parent", NULL,
1092 1093 1094
                "sysfs-path", NULL,
                "security", BOLT_SECURITY_NONE,
                "status", BOLT_STATUS_DISCONNECTED,
1095
                "conntime", 0,
1096
                "authtime", 0,
1097 1098
                NULL);

1099 1100 1101 1102 1103
  /* check if we have a new key for the device, and
   * if so, change its state to KEY_HAVE, because
   * now it is not new anymore.
   */
  if (dev->key == BOLT_KEY_NEW)
1104
    g_object_set (G_OBJECT (dev), "key", BOLT_KEY_HAVE, NULL);
1105