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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* SLiM - Simple Login Manager
* Copyright (C) 2009 Eygene Ryabinkin <rea@codelabs.ru>
*
* 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.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "util.h"
/*
* Adds the given cookie to the specified Xauthority file.
* Returns true on success, false on fault.
*/
bool Util::add_mcookie(const std::string &mcookie, const char *display,
const std::string &xauth_cmd, const std::string &authfile)
{
FILE *fp;
std::string cmd = xauth_cmd + " -f " + authfile + " -q";
fp = popen(cmd.c_str(), "w");
if (!fp)
return false;
fprintf(fp, "remove %s\n", display);
fprintf(fp, "add %s %s %s\n", display, ".", mcookie.c_str());
fprintf(fp, "exit\n");
pclose(fp);
return true;
}
/*
* Interface for random number generator. Just now it uses ordinary
* random/srandom routines and serves as a wrapper for them.
*/
void Util::srandom(unsigned long seed)
{
::srandom(seed);
}
long Util::random(void)
{
return ::random();
}
/*
* Makes seed for the srandom() using "random" values obtained from
* getpid(), time(NULL) and others.
*/
long Util::makeseed(void)
{
struct timespec ts;
long pid = getpid();
long tm = time(NULL);
if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) {
ts.tv_sec = ts.tv_nsec = 0;
}
return pid + tm + (ts.tv_sec ^ ts.tv_nsec);
}
|
