1*e3935639SPhilip Paeps /*
2*e3935639SPhilip Paeps __ __ _
3*e3935639SPhilip Paeps ___\ \/ /_ __ __ _| |_
4*e3935639SPhilip Paeps / _ \\ /| '_ \ / _` | __|
5*e3935639SPhilip Paeps | __// \| |_) | (_| | |_
6*e3935639SPhilip Paeps \___/_/\_\ .__/ \__,_|\__|
7*e3935639SPhilip Paeps |_| XML parser
8*e3935639SPhilip Paeps
9*e3935639SPhilip Paeps Copyright (c) 2017-2026 Sebastian Pipping <sebastian@pipping.org>
10*e3935639SPhilip Paeps Copyright (c) 2026 Matthew Fernandez <matthew.fernandez@gmail.com>
11*e3935639SPhilip Paeps Licensed under the MIT license:
12*e3935639SPhilip Paeps
13*e3935639SPhilip Paeps Permission is hereby granted, free of charge, to any person obtaining
14*e3935639SPhilip Paeps a copy of this software and associated documentation files (the
15*e3935639SPhilip Paeps "Software"), to deal in the Software without restriction, including
16*e3935639SPhilip Paeps without limitation the rights to use, copy, modify, merge, publish,
17*e3935639SPhilip Paeps distribute, sublicense, and/or sell copies of the Software, and to permit
18*e3935639SPhilip Paeps persons to whom the Software is furnished to do so, subject to the
19*e3935639SPhilip Paeps following conditions:
20*e3935639SPhilip Paeps
21*e3935639SPhilip Paeps The above copyright notice and this permission notice shall be included
22*e3935639SPhilip Paeps in all copies or substantial portions of the Software.
23*e3935639SPhilip Paeps
24*e3935639SPhilip Paeps THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25*e3935639SPhilip Paeps EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26*e3935639SPhilip Paeps MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
27*e3935639SPhilip Paeps NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
28*e3935639SPhilip Paeps DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
29*e3935639SPhilip Paeps OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
30*e3935639SPhilip Paeps USE OR OTHER DEALINGS IN THE SOFTWARE.
31*e3935639SPhilip Paeps */
32*e3935639SPhilip Paeps
33*e3935639SPhilip Paeps #include "random_arc4random.h"
34*e3935639SPhilip Paeps
35*e3935639SPhilip Paeps #if ! defined(_DEFAULT_SOURCE)
36*e3935639SPhilip Paeps # define _DEFAULT_SOURCE 1 /* for glibc */
37*e3935639SPhilip Paeps #endif
38*e3935639SPhilip Paeps
39*e3935639SPhilip Paeps #include <stdint.h> // for uint32_t
40*e3935639SPhilip Paeps #include <stdlib.h> // for arc4random
41*e3935639SPhilip Paeps #include <string.h> // for memcpy
42*e3935639SPhilip Paeps
43*e3935639SPhilip Paeps void
writeRandomBytes_arc4random(void * target,size_t count)44*e3935639SPhilip Paeps writeRandomBytes_arc4random(void *target, size_t count) {
45*e3935639SPhilip Paeps size_t bytesWrittenTotal = 0;
46*e3935639SPhilip Paeps
47*e3935639SPhilip Paeps while (bytesWrittenTotal < count) {
48*e3935639SPhilip Paeps const uint32_t random32 = arc4random();
49*e3935639SPhilip Paeps
50*e3935639SPhilip Paeps size_t toUse = count - bytesWrittenTotal;
51*e3935639SPhilip Paeps if (toUse > sizeof(random32))
52*e3935639SPhilip Paeps toUse = sizeof(random32);
53*e3935639SPhilip Paeps memcpy((char *)target + bytesWrittenTotal, &random32, toUse);
54*e3935639SPhilip Paeps bytesWrittenTotal += toUse;
55*e3935639SPhilip Paeps }
56*e3935639SPhilip Paeps }
57