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trivial: Parse the vendor and model from hidraw devices

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This commit is contained in:
Richard Hughes 2018-09-03 11:49:22 +01:00 committed by Mario Limonciello
parent 3f3aba2530
commit 5a86d4792d
1 changed files with 35 additions and 0 deletions
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35
src/fu-udev-device.c
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@ -7,6 +7,7 @@
#include "config.h"
#include <appstream-glib.h>
#include <string.h>
#include "fu-udev-device.h"
@ -29,6 +30,13 @@ typedef struct
G_DEFINE_TYPE_WITH_PRIVATE (FuUdevDevice, fu_udev_device, FU_TYPE_DEVICE)
#ifndef HAVE_GUDEV_232
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-function"
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GUdevDevice, g_object_unref)
#pragma clang diagnostic pop
#endif
enum {
PROP_0,
PROP_UDEV_DEVICE,
@ -67,6 +75,14 @@ fu_udev_device_get_sysfs_attr_as_uint64 (FuUdevDevice *self, const gchar *name)
return fu_common_strtoull (g_udev_device_get_sysfs_attr (priv->udev_device, name));
}
static guint16
fu_udev_device_read_uint16 (const gchar *str)
{
gchar buf[5] = { 0x0, 0x0, 0x0, 0x0, 0x0 };
memcpy (buf, str, 4);
return (guint16) g_ascii_strtoull (buf, NULL, 16);
}
static gboolean
fu_udev_device_probe (FuDevice *device, GError **error)
{
@ -80,6 +96,25 @@ fu_udev_device_probe (FuDevice *device, GError **error)
priv->model = fu_udev_device_get_sysfs_attr_as_uint64 (self, "device");
priv->revision = fu_udev_device_get_sysfs_attr_as_uint64 (self, "revision");
/* hidraw helpfully encodes the information in a different place */
if (priv->vendor == 0x0 && priv->model == 0x0 && priv->revision == 0x0 &&
g_strcmp0 (g_udev_device_get_subsystem (priv->udev_device), "hidraw") == 0) {
g_autoptr(GUdevDevice) udev_parent = g_udev_device_get_parent (priv->udev_device);
tmp = g_udev_device_get_property (udev_parent, "HID_ID");
if (tmp != NULL && strlen (tmp) == 22) {
priv->vendor = fu_udev_device_read_uint16 (tmp + 10);
priv->model = fu_udev_device_read_uint16 (tmp + 18);
}
tmp = g_udev_device_get_property (udev_parent, "HID_NAME");
if (tmp != NULL) {
g_auto(GStrv) vm = g_strsplit (tmp, " ", 2);
if (g_strv_length (vm) == 2) {
fu_device_set_vendor (device, vm[0]);
fu_device_set_name (device, vm[1]);
}
}
}
/* set the version if the revision has been set */
if (priv->revision != 0x00) {
g_autofree gchar *version = g_strdup_printf ("%02x", priv->revision);