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conky/src/entropy.cc
2019-02-23 17:13:19 -05:00

106 lines
3.0 KiB
C++

/*
*
* Conky, a system monitor, based on torsmo
*
* Any original torsmo code is licensed under the BSD license
*
* All code written since the fork of torsmo is licensed under the GPL
*
* Please see COPYING for details
*
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
* Copyright (c) 2005-2019 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include <inttypes.h>
#include <time.h>
#include "config.h"
#include "conky.h"
#include "text_object.h"
/* check for OS and include appropriate headers */
#if defined(__linux__)
#include "linux.h"
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include "freebsd.h"
#elif defined(__DragonFly__)
#include "dragonfly.h"
#elif defined(__OpenBSD__)
#include "openbsd.h"
#elif defined(__sun)
#include "solaris.h"
#elif defined(__HAIKU__)
#include "haiku.h"
#elif defined(__APPLE__) && defined(__MACH__)
#include "darwin.h"
#endif
struct _entropy {
_entropy() = default;
unsigned int avail{0};
unsigned int poolsize{0};
};
static _entropy entropy;
int update_entropy() {
get_entropy_avail(&entropy.avail);
get_entropy_poolsize(&entropy.poolsize);
return 0;
}
void print_entropy_avail(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
snprintf(p, p_max_size, "%u", entropy.avail);
}
uint8_t entropy_percentage(struct text_object *obj) {
(void)obj;
return round_to_int(static_cast<double>(entropy.avail) * 100.0 /
static_cast<double>(entropy.poolsize));
}
void print_entropy_poolsize(struct text_object *obj, char *p,
unsigned int p_max_size) {
(void)obj;
snprintf(p, p_max_size, "%u", entropy.poolsize);
}
double entropy_barval(struct text_object *obj) {
(void)obj;
return static_cast<double>(entropy.avail) / entropy.poolsize;
}
void print_password(struct text_object *obj, char *p, unsigned int p_max_size) {
time_t t;
static const char letters[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*("
")_";
static const int len = static_cast<int>(sizeof(letters)) - 1;
uintmax_t x = strtoumax(obj->data.s, (char **)NULL, 10);
uintmax_t z = 0;
if (-1 == (t = time(NULL))) { return; }
srandom(static_cast<unsigned int>(t));
for (; z < x && p_max_size - 1 > z; z++) { *p++ = letters[random() % len]; }
*p = '\0';
}