| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * FpContext - A FPrint context | ||
| 3 | * Copyright (C) 2019 Benjamin Berg <bberg@redhat.com> | ||
| 4 | * | ||
| 5 | * This library is free software; you can redistribute it and/or | ||
| 6 | * modify it under the terms of the GNU Lesser General Public | ||
| 7 | * License as published by the Free Software Foundation; either | ||
| 8 | * version 2.1 of the License, or (at your option) any later version. | ||
| 9 | * | ||
| 10 | * This library is distributed in the hope that it will be useful, | ||
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 13 | * Lesser General Public License for more details. | ||
| 14 | * | ||
| 15 | * You should have received a copy of the GNU Lesser General Public | ||
| 16 | * License along with this library; if not, write to the Free Software | ||
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 18 | */ | ||
| 19 | |||
| 20 | #define FP_COMPONENT "context" | ||
| 21 | #include <fpi-log.h> | ||
| 22 | |||
| 23 | #include "fpi-context.h" | ||
| 24 | #include "fpi-device.h" | ||
| 25 | #include <gusb.h> | ||
| 26 | #include <stdio.h> | ||
| 27 | |||
| 28 | #include <config.h> | ||
| 29 | |||
| 30 | #ifdef HAVE_UDEV | ||
| 31 | #include <gudev/gudev.h> | ||
| 32 | #endif | ||
| 33 | |||
| 34 | /** | ||
| 35 | * SECTION: fp-context | ||
| 36 | * @title: FpContext | ||
| 37 | * @short_description: Discover fingerprint devices | ||
| 38 | * | ||
| 39 | * The #FpContext allows you to discover fingerprint scanning hardware. This | ||
| 40 | * is the starting point when integrating libfprint into your software. | ||
| 41 | * | ||
| 42 | * The <link linkend="device-added">device-added</link> and device-removed signals allow you to handle devices | ||
| 43 | * that may be hotplugged at runtime. | ||
| 44 | */ | ||
| 45 | |||
| 46 | typedef struct | ||
| 47 | { | ||
| 48 | GUsbContext *usb_ctx; | ||
| 49 | GCancellable *cancellable; | ||
| 50 | |||
| 51 | GSList *sources; | ||
| 52 | |||
| 53 | gint pending_devices; | ||
| 54 | gboolean enumerated; | ||
| 55 | |||
| 56 | GArray *drivers; | ||
| 57 | GPtrArray *devices; | ||
| 58 | } FpContextPrivate; | ||
| 59 | |||
| 60 |
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3493 | G_DEFINE_TYPE_WITH_PRIVATE (FpContext, fp_context, G_TYPE_OBJECT) |
| 61 | |||
| 62 | enum { | ||
| 63 | DEVICE_ADDED_SIGNAL, | ||
| 64 | DEVICE_REMOVED_SIGNAL, | ||
| 65 | LAST_SIGNAL | ||
| 66 | }; | ||
| 67 | static guint signals[LAST_SIGNAL] = { 0 }; | ||
| 68 | |||
| 69 | static const char * | ||
| 70 | 4760 | get_drivers_allowlist_env (void) | |
| 71 | { | ||
| 72 | 4760 | return g_getenv ("FP_DRIVERS_ALLOWLIST"); | |
| 73 | } | ||
| 74 | |||
| 75 | static gboolean | ||
| 76 | 4620 | is_driver_allowed (const gchar *driver) | |
| 77 | { | ||
| 78 | 9240 | g_auto(GStrv) allowlisted_drivers = NULL; | |
| 79 | 4620 | const char *fp_drivers_allowlist_env; | |
| 80 | |||
| 81 |
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4620 | g_return_val_if_fail (driver, TRUE); |
| 82 | |||
| 83 | 4620 | fp_drivers_allowlist_env = get_drivers_allowlist_env (); | |
| 84 | |||
| 85 |
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4620 | if (!fp_drivers_allowlist_env) |
| 86 | return TRUE; | ||
| 87 | |||
| 88 | 4620 | allowlisted_drivers = g_strsplit (fp_drivers_allowlist_env, ":", -1); | |
| 89 | 4620 | return g_strv_contains ((const gchar * const *) allowlisted_drivers, driver); | |
| 90 | } | ||
| 91 | |||
| 92 | typedef struct | ||
| 93 | { | ||
| 94 | FpContext *context; | ||
| 95 | FpDevice *device; | ||
| 96 | GSource *source; | ||
| 97 | } RemoveDeviceData; | ||
| 98 | |||
| 99 | static gboolean | ||
| 100 | 7 | remove_device_idle_cb (RemoveDeviceData *data) | |
| 101 | { | ||
| 102 | 7 | FpContextPrivate *priv = fp_context_get_instance_private (data->context); | |
| 103 | 7 | guint idx = 0; | |
| 104 | |||
| 105 |
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7 | g_return_val_if_fail (g_ptr_array_find (priv->devices, data->device, &idx), G_SOURCE_REMOVE); |
| 106 | |||
| 107 | 7 | g_signal_emit (data->context, signals[DEVICE_REMOVED_SIGNAL], 0, data->device); | |
| 108 | 7 | g_ptr_array_remove_index_fast (priv->devices, idx); | |
| 109 | |||
| 110 | 7 | return G_SOURCE_REMOVE; | |
| 111 | } | ||
| 112 | |||
| 113 | static void | ||
| 114 | 7 | remove_device_data_free (RemoveDeviceData *data) | |
| 115 | { | ||
| 116 | 7 | FpContextPrivate *priv = fp_context_get_instance_private (data->context); | |
| 117 | |||
| 118 | 7 | priv->sources = g_slist_remove (priv->sources, data->source); | |
| 119 | 7 | g_free (data); | |
| 120 | 7 | } | |
| 121 | |||
| 122 | static void | ||
| 123 | 7 | remove_device (FpContext *context, FpDevice *device) | |
| 124 | { | ||
| 125 | 14 | g_autoptr(GSource) source = NULL; | |
| 126 | 7 | FpContextPrivate *priv = fp_context_get_instance_private (context); | |
| 127 | 7 | RemoveDeviceData *data; | |
| 128 | |||
| 129 | 7 | data = g_new (RemoveDeviceData, 1); | |
| 130 | 7 | data->context = context; | |
| 131 | 7 | data->device = device; | |
| 132 | |||
| 133 | 7 | source = data->source = g_idle_source_new (); | |
| 134 | 7 | g_source_set_callback (source, | |
| 135 | G_SOURCE_FUNC (remove_device_idle_cb), data, | ||
| 136 | (GDestroyNotify) remove_device_data_free); | ||
| 137 | 7 | g_source_attach (source, g_main_context_get_thread_default ()); | |
| 138 | |||
| 139 |
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7 | priv->sources = g_slist_prepend (priv->sources, source); |
| 140 | 7 | } | |
| 141 | |||
| 142 | static void | ||
| 143 | 5 | device_remove_on_notify_open_cb (FpContext *context, GParamSpec *pspec, FpDevice *device) | |
| 144 | { | ||
| 145 | 5 | remove_device (context, device); | |
| 146 | 5 | } | |
| 147 | |||
| 148 | static void | ||
| 149 | 7 | device_removed_cb (FpContext *context, FpDevice *device) | |
| 150 | { | ||
| 151 | 7 | gboolean open = FALSE; | |
| 152 | |||
| 153 | 7 | g_object_get (device, "open", &open, NULL); | |
| 154 | |||
| 155 | /* Wait for device close if the device is currently still open. */ | ||
| 156 |
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7 | if (open) |
| 157 | { | ||
| 158 | 5 | g_signal_connect_object (device, "notify::open", | |
| 159 | (GCallback) device_remove_on_notify_open_cb, | ||
| 160 | context, | ||
| 161 | G_CONNECT_SWAPPED); | ||
| 162 | } | ||
| 163 | else | ||
| 164 | { | ||
| 165 | 2 | remove_device (context, device); | |
| 166 | } | ||
| 167 | 7 | } | |
| 168 | |||
| 169 | static void | ||
| 170 | 138 | async_device_init_done_cb (GObject *source_object, GAsyncResult *res, gpointer user_data) | |
| 171 | { | ||
| 172 | 138 | g_autoptr(GError) error = NULL; | |
| 173 | 138 | FpDevice *device; | |
| 174 | 138 | FpContext *context; | |
| 175 | 138 | FpContextPrivate *priv; | |
| 176 | |||
| 177 | 138 | device = FP_DEVICE (g_async_initable_new_finish (G_ASYNC_INITABLE (source_object), | |
| 178 | res, &error)); | ||
| 179 |
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138 | if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) |
| 180 | return; | ||
| 181 | |||
| 182 | 138 | context = FP_CONTEXT (user_data); | |
| 183 | 138 | priv = fp_context_get_instance_private (context); | |
| 184 | 138 | priv->pending_devices--; | |
| 185 | |||
| 186 |
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138 | if (error) |
| 187 | { | ||
| 188 | ✗ | g_message ("Ignoring device due to initialization error: %s", error->message); | |
| 189 | ✗ | return; | |
| 190 | } | ||
| 191 | |||
| 192 | 138 | g_ptr_array_add (priv->devices, device); | |
| 193 | |||
| 194 | 138 | g_signal_connect_object (device, "removed", | |
| 195 | (GCallback) device_removed_cb, | ||
| 196 | context, | ||
| 197 | G_CONNECT_SWAPPED); | ||
| 198 | |||
| 199 |
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138 | g_signal_emit (context, signals[DEVICE_ADDED_SIGNAL], 0, device); |
| 200 | } | ||
| 201 | |||
| 202 | static void | ||
| 203 | 1094 | usb_device_added_cb (FpContext *self, GUsbDevice *device, GUsbContext *usb_ctx) | |
| 204 | { | ||
| 205 | 1094 | FpContextPrivate *priv = fp_context_get_instance_private (self); | |
| 206 | 1094 | GType found_driver = G_TYPE_NONE; | |
| 207 | 1094 | const FpIdEntry *found_entry = NULL; | |
| 208 | 1094 | gint found_score = 0; | |
| 209 | 1094 | gint i; | |
| 210 | 1094 | guint16 pid, vid; | |
| 211 | |||
| 212 | 1094 | pid = g_usb_device_get_pid (device); | |
| 213 | 1094 | vid = g_usb_device_get_vid (device); | |
| 214 | |||
| 215 | /* Find the best driver to handle this USB device. */ | ||
| 216 |
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5370 | for (i = 0; i < priv->drivers->len; i++) |
| 217 | { | ||
| 218 | 3182 | GType driver = g_array_index (priv->drivers, GType, i); | |
| 219 | 6364 | g_autoptr(FpDeviceClass) cls = g_type_class_ref (driver); | |
| 220 | 3182 | const FpIdEntry *entry; | |
| 221 | |||
| 222 |
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3182 | if (cls->type != FP_DEVICE_TYPE_USB) |
| 223 | 3132 | continue; | |
| 224 | |||
| 225 |
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560 | for (entry = cls->id_table; entry->pid; entry++) |
| 226 | { | ||
| 227 | 510 | gint driver_score = 50; | |
| 228 | |||
| 229 |
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510 | if (entry->pid != pid || entry->vid != vid) |
| 230 | 488 | continue; | |
| 231 | |||
| 232 |
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22 | if (cls->usb_discover) |
| 233 | 2 | driver_score = cls->usb_discover (device); | |
| 234 | |||
| 235 | /* Is this driver better than the one we had? */ | ||
| 236 |
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22 | if (driver_score <= found_score) |
| 237 | ✗ | continue; | |
| 238 | |||
| 239 | found_score = driver_score; | ||
| 240 | found_driver = driver; | ||
| 241 | found_entry = entry; | ||
| 242 | } | ||
| 243 | } | ||
| 244 | |||
| 245 |
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1094 | if (found_driver == G_TYPE_NONE) |
| 246 | { | ||
| 247 | 1072 | g_debug ("No driver found for USB device %04X:%04X", vid, pid); | |
| 248 | 1072 | return; | |
| 249 | } | ||
| 250 | |||
| 251 | 22 | priv->pending_devices++; | |
| 252 | 22 | g_async_initable_new_async (found_driver, | |
| 253 | G_PRIORITY_LOW, | ||
| 254 | priv->cancellable, | ||
| 255 | async_device_init_done_cb, | ||
| 256 | self, | ||
| 257 | "fpi-usb-device", device, | ||
| 258 | 22 | "fpi-driver-data", found_entry->driver_data, | |
| 259 | NULL); | ||
| 260 | } | ||
| 261 | |||
| 262 | static void | ||
| 263 | ✗ | usb_device_removed_cb (FpContext *self, GUsbDevice *device, GUsbContext *usb_ctx) | |
| 264 | { | ||
| 265 | ✗ | FpContextPrivate *priv = fp_context_get_instance_private (self); | |
| 266 | ✗ | gint i; | |
| 267 | |||
| 268 | /* Do the lazy way and just look at each device. */ | ||
| 269 | ✗ | for (i = 0; i < priv->devices->len; i++) | |
| 270 | { | ||
| 271 | ✗ | FpDevice *dev = g_ptr_array_index (priv->devices, i); | |
| 272 | ✗ | FpDeviceClass *cls = FP_DEVICE_GET_CLASS (dev); | |
| 273 | |||
| 274 | ✗ | if (cls->type != FP_DEVICE_TYPE_USB) | |
| 275 | ✗ | continue; | |
| 276 | |||
| 277 | ✗ | if (fpi_device_get_usb_device (dev) == device) | |
| 278 | ✗ | fpi_device_remove (dev); | |
| 279 | } | ||
| 280 | ✗ | } | |
| 281 | |||
| 282 | static void | ||
| 283 | 140 | fp_context_finalize (GObject *object) | |
| 284 | { | ||
| 285 | 140 | FpContext *self = (FpContext *) object; | |
| 286 | 140 | FpContextPrivate *priv = fp_context_get_instance_private (self); | |
| 287 | |||
| 288 | 140 | g_cancellable_cancel (priv->cancellable); | |
| 289 |
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140 | g_clear_object (&priv->cancellable); |
| 290 |
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140 | g_clear_pointer (&priv->drivers, g_array_unref); |
| 291 |
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140 | g_clear_pointer (&priv->devices, g_ptr_array_unref); |
| 292 | |||
| 293 | 140 | g_slist_free_full (g_steal_pointer (&priv->sources), (GDestroyNotify) g_source_destroy); | |
| 294 | |||
| 295 |
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140 | if (priv->usb_ctx) |
| 296 | 140 | g_object_run_dispose (G_OBJECT (priv->usb_ctx)); | |
| 297 |
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140 | g_clear_object (&priv->usb_ctx); |
| 298 | |||
| 299 | 140 | G_OBJECT_CLASS (fp_context_parent_class)->finalize (object); | |
| 300 | 140 | } | |
| 301 | |||
| 302 | static void | ||
| 303 | 117 | fp_context_class_init (FpContextClass *klass) | |
| 304 | { | ||
| 305 | 117 | GObjectClass *object_class = G_OBJECT_CLASS (klass); | |
| 306 | |||
| 307 | 117 | object_class->finalize = fp_context_finalize; | |
| 308 | |||
| 309 | /** | ||
| 310 | * FpContext::device-added: | ||
| 311 | * @context: the #FpContext instance that emitted the signal | ||
| 312 | * @device: A #FpDevice | ||
| 313 | * | ||
| 314 | * This signal is emitted when a fingerprint reader is added. | ||
| 315 | **/ | ||
| 316 | 117 | signals[DEVICE_ADDED_SIGNAL] = g_signal_new ("device-added", | |
| 317 | G_TYPE_FROM_CLASS (klass), | ||
| 318 | G_SIGNAL_RUN_LAST, | ||
| 319 | G_STRUCT_OFFSET (FpContextClass, device_added), | ||
| 320 | NULL, | ||
| 321 | NULL, | ||
| 322 | g_cclosure_marshal_VOID__OBJECT, | ||
| 323 | G_TYPE_NONE, | ||
| 324 | 1, | ||
| 325 | FP_TYPE_DEVICE); | ||
| 326 | |||
| 327 | /** | ||
| 328 | * FpContext::device-removed: | ||
| 329 | * @context: the #FpContext instance that emitted the signal | ||
| 330 | * @device: A #FpDevice | ||
| 331 | * | ||
| 332 | * This signal is emitted when a fingerprint reader is removed. | ||
| 333 | * | ||
| 334 | * It is guaranteed that the device has been closed before this signal | ||
| 335 | * is emitted. See the #FpDevice removed signal documentation for more | ||
| 336 | * information. | ||
| 337 | **/ | ||
| 338 | 117 | signals[DEVICE_REMOVED_SIGNAL] = g_signal_new ("device-removed", | |
| 339 | G_TYPE_FROM_CLASS (klass), | ||
| 340 | G_SIGNAL_RUN_LAST, | ||
| 341 | G_STRUCT_OFFSET (FpContextClass, device_removed), | ||
| 342 | NULL, | ||
| 343 | NULL, | ||
| 344 | g_cclosure_marshal_VOID__OBJECT, | ||
| 345 | G_TYPE_NONE, | ||
| 346 | 1, | ||
| 347 | FP_TYPE_DEVICE); | ||
| 348 | 117 | } | |
| 349 | |||
| 350 | static void | ||
| 351 | 140 | fp_context_init (FpContext *self) | |
| 352 | { | ||
| 353 | 280 | g_autoptr(GError) error = NULL; | |
| 354 | 140 | FpContextPrivate *priv = fp_context_get_instance_private (self); | |
| 355 | 140 | guint i; | |
| 356 | |||
| 357 | 140 | g_debug ("Initializing FpContext (libfprint version " LIBFPRINT_VERSION ")"); | |
| 358 | |||
| 359 | 140 | priv->drivers = fpi_get_driver_types (); | |
| 360 | |||
| 361 |
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140 | if (get_drivers_allowlist_env ()) |
| 362 | { | ||
| 363 |
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4760 | for (i = 0; i < priv->drivers->len;) |
| 364 | { | ||
| 365 | 4620 | GType driver = g_array_index (priv->drivers, GType, i); | |
| 366 | 9240 | g_autoptr(FpDeviceClass) cls = g_type_class_ref (driver); | |
| 367 | |||
| 368 |
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4620 | if (!is_driver_allowed (cls->id)) |
| 369 | 4246 | g_array_remove_index (priv->drivers, i); | |
| 370 | else | ||
| 371 | 374 | ++i; | |
| 372 | } | ||
| 373 | } | ||
| 374 | |||
| 375 | 140 | priv->devices = g_ptr_array_new_with_free_func (g_object_unref); | |
| 376 | |||
| 377 | 140 | priv->cancellable = g_cancellable_new (); | |
| 378 | 140 | priv->usb_ctx = g_usb_context_new (&error); | |
| 379 |
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140 | if (!priv->usb_ctx) |
| 380 | { | ||
| 381 | ✗ | g_message ("Could not initialise USB Subsystem: %s", error->message); | |
| 382 | } | ||
| 383 | else | ||
| 384 | { | ||
| 385 | 140 | g_usb_context_set_debug (priv->usb_ctx, G_LOG_LEVEL_INFO); | |
| 386 | 140 | g_signal_connect_object (priv->usb_ctx, | |
| 387 | "device-added", | ||
| 388 | G_CALLBACK (usb_device_added_cb), | ||
| 389 | self, | ||
| 390 | G_CONNECT_SWAPPED); | ||
| 391 | 140 | g_signal_connect_object (priv->usb_ctx, | |
| 392 | "device-removed", | ||
| 393 | G_CALLBACK (usb_device_removed_cb), | ||
| 394 | self, | ||
| 395 | G_CONNECT_SWAPPED); | ||
| 396 | } | ||
| 397 | 140 | } | |
| 398 | |||
| 399 | /** | ||
| 400 | * fp_context_new: | ||
| 401 | * | ||
| 402 | * Create a new #FpContext. | ||
| 403 | * | ||
| 404 | * Returns: (transfer full): a newly created #FpContext | ||
| 405 | */ | ||
| 406 | FpContext * | ||
| 407 | 26 | fp_context_new (void) | |
| 408 | { | ||
| 409 | 26 | return g_object_new (FP_TYPE_CONTEXT, NULL); | |
| 410 | } | ||
| 411 | |||
| 412 | /** | ||
| 413 | * fp_context_enumerate: | ||
| 414 | * @context: a #FpContext | ||
| 415 | * | ||
| 416 | * Enumerate all devices. You should call this function exactly once | ||
| 417 | * at startup. Please note that it iterates the mainloop until all | ||
| 418 | * devices are enumerated. | ||
| 419 | */ | ||
| 420 | void | ||
| 421 | 168 | fp_context_enumerate (FpContext *context) | |
| 422 | { | ||
| 423 | 168 | FpContextPrivate *priv = fp_context_get_instance_private (context); | |
| 424 | 168 | gboolean dispatched; | |
| 425 | 168 | gint i; | |
| 426 | |||
| 427 |
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168 | g_return_if_fail (FP_IS_CONTEXT (context)); |
| 428 | |||
| 429 |
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168 | if (priv->enumerated) |
| 430 | return; | ||
| 431 | |||
| 432 | 139 | priv->enumerated = TRUE; | |
| 433 | |||
| 434 | /* USB devices are handled from callbacks */ | ||
| 435 |
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139 | if (priv->usb_ctx) |
| 436 | 139 | g_usb_context_enumerate (priv->usb_ctx); | |
| 437 | |||
| 438 | /* Handle Virtual devices based on environment variables */ | ||
| 439 |
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510 | for (i = 0; i < priv->drivers->len; i++) |
| 440 | { | ||
| 441 | 371 | GType driver = g_array_index (priv->drivers, GType, i); | |
| 442 | 742 | g_autoptr(FpDeviceClass) cls = g_type_class_ref (driver); | |
| 443 | 371 | const FpIdEntry *entry; | |
| 444 | |||
| 445 |
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371 | if (cls->type != FP_DEVICE_TYPE_VIRTUAL) |
| 446 | 23 | continue; | |
| 447 | |||
| 448 |
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812 | for (entry = cls->id_table; entry->pid; entry++) |
| 449 | { | ||
| 450 | 464 | const gchar *val; | |
| 451 | |||
| 452 | 464 | val = g_getenv (entry->virtual_envvar); | |
| 453 |
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464 | if (!val || val[0] == '\0') |
| 454 | 349 | continue; | |
| 455 | |||
| 456 | 115 | g_debug ("Found virtual environment device: %s, %s", entry->virtual_envvar, val); | |
| 457 | 115 | priv->pending_devices++; | |
| 458 | 115 | g_async_initable_new_async (driver, | |
| 459 | G_PRIORITY_LOW, | ||
| 460 | priv->cancellable, | ||
| 461 | async_device_init_done_cb, | ||
| 462 | context, | ||
| 463 | "fpi-environ", val, | ||
| 464 | 115 | "fpi-driver-data", entry->driver_data, | |
| 465 | NULL); | ||
| 466 | 115 | g_debug ("created"); | |
| 467 | } | ||
| 468 | } | ||
| 469 | |||
| 470 | |||
| 471 | #ifdef HAVE_UDEV | ||
| 472 | { | ||
| 473 | 139 | g_autoptr(GUdevClient) udev_client = g_udev_client_new (NULL); | |
| 474 | |||
| 475 | /* This uses a very simple algorithm to allocate devices to drivers and assumes that no two drivers will want the same device. Future improvements | ||
| 476 | * could add a usb_discover style udev_discover that returns a score, however for internal devices the potential overlap should be very low between | ||
| 477 | * separate drivers. | ||
| 478 | */ | ||
| 479 | |||
| 480 |
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278 | g_autoptr(GList) spidev_devices = g_udev_client_query_by_subsystem (udev_client, "spidev"); |
| 481 |
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139 | g_autoptr(GList) hidraw_devices = g_udev_client_query_by_subsystem (udev_client, "hidraw"); |
| 482 | |||
| 483 | /* for each potential driver, try to match all requested resources. */ | ||
| 484 |
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649 | for (i = 0; i < priv->drivers->len; i++) |
| 485 | { | ||
| 486 | 371 | GType driver = g_array_index (priv->drivers, GType, i); | |
| 487 | 742 | g_autoptr(FpDeviceClass) cls = g_type_class_ref (driver); | |
| 488 | 371 | const FpIdEntry *entry; | |
| 489 | |||
| 490 |
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371 | if (cls->type != FP_DEVICE_TYPE_UDEV) |
| 491 | 370 | continue; | |
| 492 | |||
| 493 |
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10 | for (entry = cls->id_table; entry->udev_types; entry++) |
| 494 | { | ||
| 495 | 9 | GList *matched_spidev = NULL, *matched_hidraw = NULL; | |
| 496 | |||
| 497 |
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9 | if (entry->udev_types & FPI_DEVICE_UDEV_SUBTYPE_SPIDEV) |
| 498 | { | ||
| 499 |
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9 | for (matched_spidev = spidev_devices; matched_spidev; matched_spidev = matched_spidev->next) |
| 500 | { | ||
| 501 | 1 | const gchar * sysfs = g_udev_device_get_sysfs_path (matched_spidev->data); | |
| 502 |
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1 | if (!sysfs) |
| 503 | ✗ | continue; | |
| 504 |
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1 | if (strstr (sysfs, entry->spi_acpi_id)) |
| 505 | break; | ||
| 506 | } | ||
| 507 | /* If match was not found exit */ | ||
| 508 |
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9 | if (matched_spidev == NULL) |
| 509 | 8 | continue; | |
| 510 | } | ||
| 511 |
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1 | if (entry->udev_types & FPI_DEVICE_UDEV_SUBTYPE_HIDRAW) |
| 512 | { | ||
| 513 |
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1 | for (matched_hidraw = hidraw_devices; matched_hidraw; matched_hidraw = matched_hidraw->next) |
| 514 | { | ||
| 515 | /* Find the parent HID node, and check the vid/pid from its HID_ID property */ | ||
| 516 | 2 | g_autoptr(GUdevDevice) parent = g_udev_device_get_parent_with_subsystem (matched_hidraw->data, "hid", NULL); | |
| 517 | 1 | const gchar * hid_id = g_udev_device_get_property (parent, "HID_ID"); | |
| 518 | 1 | guint32 vendor, product; | |
| 519 | |||
| 520 |
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1 | if (!parent || !hid_id) |
| 521 | ✗ | continue; | |
| 522 | |||
| 523 |
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1 | if (sscanf (hid_id, "%*X:%X:%X", &vendor, &product) != 2) |
| 524 | ✗ | continue; | |
| 525 | |||
| 526 |
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1 | if (vendor == entry->hid_id.vid && product == entry->hid_id.pid) |
| 527 | break; | ||
| 528 | } | ||
| 529 | /* If match was not found exit */ | ||
| 530 |
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1 | if (matched_hidraw == NULL) |
| 531 | ✗ | continue; | |
| 532 | } | ||
| 533 | 1 | priv->pending_devices++; | |
| 534 |
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2 | g_async_initable_new_async (driver, |
| 535 | G_PRIORITY_LOW, | ||
| 536 | priv->cancellable, | ||
| 537 | async_device_init_done_cb, | ||
| 538 | context, | ||
| 539 | 1 | "fpi-driver-data", entry->driver_data, | |
| 540 | 1 | "fpi-udev-data-spidev", (matched_spidev ? g_udev_device_get_device_file (matched_spidev->data) : NULL), | |
| 541 | 1 | "fpi-udev-data-hidraw", (matched_hidraw ? g_udev_device_get_device_file (matched_hidraw->data) : NULL), | |
| 542 | NULL); | ||
| 543 | /* remove entries from list to avoid conflicts */ | ||
| 544 |
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1 | if (matched_spidev) |
| 545 | { | ||
| 546 | 1 | g_object_unref (matched_spidev->data); | |
| 547 | 1 | spidev_devices = g_list_delete_link (spidev_devices, matched_spidev); | |
| 548 | } | ||
| 549 |
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1 | if (matched_hidraw) |
| 550 | { | ||
| 551 | 1 | g_object_unref (matched_hidraw->data); | |
| 552 | 1 | hidraw_devices = g_list_delete_link (hidraw_devices, matched_hidraw); | |
| 553 | } | ||
| 554 | } | ||
| 555 | } | ||
| 556 | |||
| 557 | /* free all unused elemnts in both lists */ | ||
| 558 | 139 | g_list_foreach (spidev_devices, (GFunc) g_object_unref, NULL); | |
| 559 |
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139 | g_list_foreach (hidraw_devices, (GFunc) g_object_unref, NULL); |
| 560 | } | ||
| 561 | #endif | ||
| 562 | |||
| 563 | /* Iterate until 1. we have no pending devices, and 2. the mainloop is idle | ||
| 564 | * This takes care of processing hotplug events that happened during | ||
| 565 | * enumeration. | ||
| 566 | * This is important due to USB `persist` being turned off. At resume time, | ||
| 567 | * devices will disappear and immediately re-appear. In this situation, | ||
| 568 | * enumerate could first see the old state with a removed device resulting | ||
| 569 | * in it to not be discovered. | ||
| 570 | * As a hotplug event is seemingly emitted by the kernel immediately, we can | ||
| 571 | * simply make sure to process all events before returning from enumerate. | ||
| 572 | */ | ||
| 573 | dispatched = TRUE; | ||
| 574 |
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558 | while (priv->pending_devices || dispatched) |
| 575 | 419 | dispatched = g_main_context_iteration (NULL, !!priv->pending_devices); | |
| 576 | } | ||
| 577 | |||
| 578 | /** | ||
| 579 | * fp_context_get_devices: | ||
| 580 | * @context: a #FpContext | ||
| 581 | * | ||
| 582 | * Get all devices. fp_context_enumerate() will be called as needed. | ||
| 583 | * | ||
| 584 | * Returns: (transfer none) (element-type FpDevice): a new #GPtrArray of #FpDevice's. | ||
| 585 | */ | ||
| 586 | GPtrArray * | ||
| 587 | 144 | fp_context_get_devices (FpContext *context) | |
| 588 | { | ||
| 589 | 144 | FpContextPrivate *priv = fp_context_get_instance_private (context); | |
| 590 | |||
| 591 |
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144 | g_return_val_if_fail (FP_IS_CONTEXT (context), NULL); |
| 592 | |||
| 593 | 144 | fp_context_enumerate (context); | |
| 594 | |||
| 595 | 144 | return priv->devices; | |
| 596 | } | ||
| 597 |