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/* horst - Highly Optimized Radio Scanning Tool
*
* Copyright (C) 2005-2016 Bruno Randolf (br1@einfach.org)
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <string.h>
#include "util.h"
int normalize(float oval, int max_val, int max) {
int val;
val= (oval / max_val) * max;
if (val > max) /* cap if still bigger */
val = max;
if (val == 0 && oval > 0)
val = 1;
if (val < 0)
val = 0;
return val;
}
#if DO_DEBUG
void dump_packet(const unsigned char* buf, int len)
{
int i;
for (i = 0; i < len; i++) {
if ((i % 2) == 0) {
printf(" ");
}
if ((i % 16) == 0) {
printf("\n");
}
printf("%02x", buf[i]);
}
printf("\n");
}
#else
void
dump_packet(__attribute__((unused)) const unsigned char* buf,
__attribute__((unused)) int len)
{
}
#endif
const char* ether_sprintf(const unsigned char *mac)
{
static char etherbuf[18];
snprintf(etherbuf, sizeof(etherbuf), "%02x:%02x:%02x:%02x:%02x:%02x",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return etherbuf;
}
const char* ether_sprintf_short(const unsigned char *mac)
{
static char etherbuf[5];
snprintf(etherbuf, sizeof(etherbuf), "%02x%02x",
mac[4], mac[5]);
return etherbuf;
}
const char* ip_sprintf(const unsigned int ip)
{
static char ipbuf[18];
unsigned char* cip = (unsigned char*)&ip;
snprintf(ipbuf, sizeof(ipbuf), "%d.%d.%d.%d",
cip[0], cip[1], cip[2], cip[3]);
return ipbuf;
}
const char* ip_sprintf_short(const unsigned int ip)
{
static char ipbuf[5];
unsigned char* cip = (unsigned char*)&ip;
snprintf(ipbuf, sizeof(ipbuf), ".%d", cip[3]);
return ipbuf;
}
void convert_string_to_mac(const char* string, unsigned char* mac)
{
int c;
for(c = 0; c < 6 && string; c++) {
int x = 0;
if (string)
sscanf(string, "%x", &x);
mac[c] = x;
string = strchr(string, ':');
if (string)
string++;
}
}
const char* kilo_mega_ize(unsigned int val) {
static char buf[20];
char c = 0;
int rest;
if (val >= 1024) { /* kilo */
rest = (val & 1023) / 102.4; /* only one digit */
val = val >> 10;
c = 'k';
}
if (val >= 1024) { /* mega */
rest = (val & 1023) / 102.4; /* only one digit */
val = val >> 10;
c = 'M';
}
if (c)
snprintf(buf, sizeof(buf), "%d.%d%c", val, rest, c);
else
snprintf(buf, sizeof(buf), "%d", val);
return buf;
}
/* simple ilog2 implementation */
int ilog2(int x)
{
int n;
for (n = 0; !(x & 1); n++)
x = x >> 1;
return n;
}
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