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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2009 Bastien Nocera <hadess@hadess.net>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <bluetooth-enums.h>
#include <bluetooth-utils.h>
#include "pin.h"
#define PIN_CODE_DB "pin-code-database.xml"
#define MAX_DIGITS_PIN_PREFIX "max:"
#define TYPE_IS(x, r) { \
if (g_str_equal(type, x)) return r; \
}
static guint string_to_type(const char *type)
{
TYPE_IS ("any", BLUETOOTH_TYPE_ANY);
TYPE_IS ("mouse", BLUETOOTH_TYPE_MOUSE);
TYPE_IS ("tablet", BLUETOOTH_TYPE_TABLET);
TYPE_IS ("keyboard", BLUETOOTH_TYPE_KEYBOARD);
TYPE_IS ("headset", BLUETOOTH_TYPE_HEADSET);
TYPE_IS ("headphones", BLUETOOTH_TYPE_HEADPHONES);
TYPE_IS ("audio", BLUETOOTH_TYPE_OTHER_AUDIO);
TYPE_IS ("printer", BLUETOOTH_TYPE_PRINTER);
TYPE_IS ("network", BLUETOOTH_TYPE_NETWORK);
g_warning ("unhandled type '%s'", type);
return BLUETOOTH_TYPE_ANY;
}
typedef struct {
char *ret_pin;
guint max_digits;
guint type;
const char *address;
const char *name;
} PinParseData;
static void
pin_db_parse_start_tag (GMarkupParseContext *ctx,
const gchar *element_name,
const gchar **attr_names,
const gchar **attr_values,
gpointer data,
GError **error)
{
PinParseData *pdata = (PinParseData *) data;
if (pdata->ret_pin != NULL || pdata->max_digits != 0)
return;
if (g_str_equal (element_name, "device") == FALSE)
return;
while (*attr_names && *attr_values) {
if (g_str_equal (*attr_names, "type")) {
guint type;
type = string_to_type (*attr_values);
if (type != BLUETOOTH_TYPE_ANY && type != pdata->type)
return;
} else if (g_str_equal (*attr_names, "oui")) {
if (g_str_has_prefix (pdata->address, *attr_values) == FALSE)
return;
} else if (g_str_equal (*attr_names, "name")) {
if (*attr_values == NULL || pdata->name == NULL)
return;
if (strstr (*attr_values, pdata->name) == NULL)
return;
} else if (g_str_equal (*attr_names, "pin")) {
if (g_str_has_prefix (*attr_values, MAX_DIGITS_PIN_PREFIX) != FALSE) {
pdata->max_digits = strtoul (*attr_values + strlen (MAX_DIGITS_PIN_PREFIX), NULL, 0);
g_assert (pdata->max_digits > 0 && pdata->max_digits < PIN_NUM_DIGITS);
} else {
pdata->ret_pin = g_strdup (*attr_values);
}
return;
}
++attr_names;
++attr_values;
}
}
char *
get_pincode_for_device (guint type, const char *address, const char *name, guint *max_digits)
{
GMarkupParseContext *ctx;
GMarkupParser parser = { pin_db_parse_start_tag, NULL, NULL, NULL, NULL };
PinParseData data;
char *buf;
gsize buf_len;
GError *err = NULL;
g_return_val_if_fail (address != NULL, NULL);
g_debug ("Getting pincode for device '%s' (type: %s address: %s)",
name ? name : "", address, bluetooth_type_to_string (type));
/* Load the PIN database and split it in lines */
if (!g_file_get_contents(PIN_CODE_DB, &buf, &buf_len, NULL)) {
char *filename;
filename = g_build_filename(PKGDATADIR, PIN_CODE_DB, NULL);
if (!g_file_get_contents(filename, &buf, &buf_len, NULL)) {
g_warning("Could not load "PIN_CODE_DB);
g_free (filename);
return NULL;
}
g_free (filename);
}
data.ret_pin = NULL;
data.max_digits = 0;
data.type = type;
data.address = address;
data.name = name;
ctx = g_markup_parse_context_new (&parser, 0, &data, NULL);
if (!g_markup_parse_context_parse (ctx, buf, buf_len, &err)) {
g_warning ("Failed to parse '%s': %s\n", PIN_CODE_DB, err->message);
g_error_free (err);
}
g_markup_parse_context_free (ctx);
g_free (buf);
if (max_digits != NULL)
*max_digits = data.max_digits;
g_debug ("Got pin '%s' (max digits: %d) for device '%s' (type: %s address: %s)",
data.ret_pin, data.max_digits,
name ? name : "", address, bluetooth_type_to_string (type));
return data.ret_pin;
}
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