monitor/hwdb.c

   1 // SPDX-License-Identifier: LGPL-2.1-or-later
   2 /*
   3  *
   4  *  BlueZ - Bluetooth protocol stack for Linux
   5  *
   6  *  Copyright (C) 2011-2014  Intel Corporation
   7  *  Copyright (C) 2002-2010  Marcel Holtmann <marcel@holtmann.org>
   8  *
   9  *
  10  */
  11
  12 #ifdef HAVE_CONFIG_H
  13 #include <config.h>
  14 #endif
  15
  16 #include <stdio.h>
  17 #include <string.h>
  18
  19 #include "hwdb.h"
  20
  21 #ifdef HAVE_UDEV_HWDB_NEW
  22 #include <libudev.h>
  23
  24 bool hwdb_get_vendor_model(const char *modalias, char **vendor, char **model)
  25 {
  26         struct udev *udev;
  27         struct udev_hwdb *hwdb;
  28         struct udev_list_entry *head, *entry;
  29         bool result;
  30
  31         udev = udev_new();
  32         if (!udev)
  33                 return false;
  34
  35         hwdb = udev_hwdb_new(udev);
  36         if (!hwdb) {
  37                 result = false;
  38                 goto done;
  39         }
  40
  41         *vendor = NULL;
  42         *model = NULL;
  43
  44         head = udev_hwdb_get_properties_list_entry(hwdb, modalias, 0);
  45
  46         udev_list_entry_foreach(entry, head) {
  47                 const char *name = udev_list_entry_get_name(entry);
  48
  49                 if (!name)
  50                         continue;
  51
  52                 if (!*vendor && !strcmp(name, "ID_VENDOR_FROM_DATABASE"))
  53                         *vendor = strdup(udev_list_entry_get_value(entry));
  54                 else if (!*model && !strcmp(name, "ID_MODEL_FROM_DATABASE"))
  55                         *model = strdup(udev_list_entry_get_value(entry));
  56         }
  57
  58         hwdb = udev_hwdb_unref(hwdb);
  59
  60         result = true;
  61
  62 done:
  63         udev = udev_unref(udev);
  64
  65         return result;
  66 }
  67
  68 bool hwdb_get_company(const uint8_t *bdaddr, char **company)
  69 {
  70         struct udev *udev;
  71         struct udev_hwdb *hwdb;
  72         struct udev_list_entry *head, *entry;
  73         char modalias[11];
  74         bool result;
  75
  76         if (!bdaddr[2] && !bdaddr[1] && !bdaddr[0])
  77                 return false;
  78
  79         sprintf(modalias, "OUI:%2.2X%2.2X%2.2X",
  80                                 bdaddr[5], bdaddr[4], bdaddr[3]);
  81
  82         udev = udev_new();
  83         if (!udev)
  84                 return false;
  85
  86         hwdb = udev_hwdb_new(udev);
  87         if (!hwdb) {
  88                 result = false;
  89                 goto done;
  90         }
  91
  92         *company = NULL;
  93
  94         head = udev_hwdb_get_properties_list_entry(hwdb, modalias, 0);
  95
  96         udev_list_entry_foreach(entry, head) {
  97                 const char *name = udev_list_entry_get_name(entry);
  98
  99                 if (name && !strcmp(name, "ID_OUI_FROM_DATABASE")) {
 100                         *company = strdup(udev_list_entry_get_value(entry));
 101                         break;
 102                 }
 103         }
 104
 105         hwdb = udev_hwdb_unref(hwdb);
 106
 107         result = true;
 108
 109 done:
 110         udev = udev_unref(udev);
 111
 112         return result;
 113 }
 114 #else
 115 bool hwdb_get_vendor_model(const char *modalias, char **vendor, char **model)
 116 {
 117         return false;
 118 }
 119
 120 bool hwdb_get_company(const uint8_t *bdaddr, char **company)
 121 {
 122         return false;
 123 }
 124 #endif