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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012-2014 Intel Corporation. All rights reserved.
*
*
* This library 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <bluetooth/bluetooth.h>
#include <stdio.h>
#include <ctype.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <limits.h>
#include <string.h>
#include "util.h"
void util_debug(util_debug_func_t function, void *user_data,
const char *format, ...)
{
char str[78];
va_list ap;
if (!function || !format)
return;
va_start(ap, format);
vsnprintf(str, sizeof(str), format, ap);
va_end(ap);
function(str, user_data);
}
void util_hexdump(const char dir, const unsigned char *buf, size_t len,
util_debug_func_t function, void *user_data)
{
static const char hexdigits[] = "0123456789abcdef";
char str[68];
size_t i;
if (!function || !len)
return;
str[0] = dir;
for (i = 0; i < len; i++) {
str[((i % 16) * 3) + 1] = ' ';
str[((i % 16) * 3) + 2] = hexdigits[buf[i] >> 4];
str[((i % 16) * 3) + 3] = hexdigits[buf[i] & 0xf];
str[(i % 16) + 51] = isprint(buf[i]) ? buf[i] : '.';
if ((i + 1) % 16 == 0) {
str[49] = ' ';
str[50] = ' ';
str[67] = '\0';
function(str, user_data);
str[0] = ' ';
}
}
if (i % 16 > 0) {
size_t j;
for (j = (i % 16); j < 16; j++) {
str[(j * 3) + 1] = ' ';
str[(j * 3) + 2] = ' ';
str[(j * 3) + 3] = ' ';
str[j + 51] = ' ';
}
str[49] = ' ';
str[50] = ' ';
str[67] = '\0';
function(str, user_data);
}
}
/* Helper for getting the dirent type in case readdir returns DT_UNKNOWN */
unsigned char util_get_dt(const char *parent, const char *name)
{
char filename[PATH_MAX];
struct stat st;
snprintf(filename, sizeof(filename), "%s/%s", parent, name);
if (lstat(filename, &st) == 0 && S_ISDIR(st.st_mode))
return DT_DIR;
return DT_UNKNOWN;
}
/* Helpers for bitfield operations */
/* Find unique id in range from 1 to max but no bigger then
* sizeof(int) * 8. ffs() is used since it is POSIX standard
*/
uint8_t util_get_uid(unsigned int *bitmap, uint8_t max)
{
uint8_t id;
id = ffs(~*bitmap);
if (!id || id > max)
return 0;
*bitmap |= 1 << (id - 1);
return id;
}
/* Clear id bit in bitmap */
void util_clear_uid(unsigned int *bitmap, uint8_t id)
{
if (!id)
return;
*bitmap &= ~(1 << (id - 1));
}
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