blob: 09702e55fd0beef59ba824c9bf8ca44b84e546fe (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
#define _POSIX_C_SOURCE 200809L
#include "util/token.h"
#include "wlr/util/log.h"
#include <fcntl.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
bool generate_token(char out[static TOKEN_SIZE]) {
static FILE *urandom = NULL;
uint64_t data[2];
if (!urandom) {
int fd = open("/dev/urandom", O_RDONLY | O_CLOEXEC);
if (fd < 0) {
wlr_log_errno(WLR_ERROR, "Failed to open random device");
return false;
}
if (!(urandom = fdopen(fd, "r"))) {
wlr_log_errno(WLR_ERROR, "fdopen failed");
close(fd);
return false;
}
}
if (fread(data, sizeof(data), 1, urandom) != 1) {
wlr_log_errno(WLR_ERROR, "Failed to read from random device");
return false;
}
if (snprintf(out, TOKEN_SIZE, "%016" PRIx64 "%016" PRIx64, data[0], data[1]) != TOKEN_SIZE - 1) {
wlr_log_errno(WLR_ERROR, "Failed to format hex string token");
return false;
}
return true;
}
|
