summaryrefslogtreecommitdiffabout
path: root/lib/mem.c
blob: fbe5f06c35475ee705a10f74d07d2d8da3a2c4a7 (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
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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/* This file is part of pam-modules.
   Copyright (C) 2008, 2010-2012, 2014-2015, 2018 Sergey Poznyakoff
 
   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 <graypam.h>

jmp_buf gray_pam_jmp;

void
gray_raise(const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	_pam_vlog(LOG_ERR, fmt, ap);
	va_end(ap);
	longjmp(gray_pam_jmp, 1);
}

void *
gray_malloc(size_t size)
{
	void *p = malloc(size);
	if (!p)
		gray_raise("Not enough memory");
	return p;
}

void *
gray_zalloc(size_t size)
{
	void *p = malloc(size);
	if (!p)
		gray_raise("Not enough memory");
	memset(p, 0, size);
	return p;
}

void *
gray_calloc(size_t count, size_t size)
{
	return gray_zalloc(count * size);
}

void *
gray_realloc(void *ptr, size_t size)
{
	ptr = realloc(ptr, size);
	if (!ptr)
		gray_raise("Not enough memory");
	return ptr;
}

void *
gray_2nrealloc(void *ptr, size_t *pcount, size_t elsiz)
{
	size_t count = *pcount;

	if (!ptr) {
		if (!count) 
			count = *pcount = 16;
		return gray_calloc(count, elsiz);
	}
	if ((size_t)-1 / 2 / elsiz <= count)
		gray_raise("Not enough memory");
	count *= 2;
	*pcount = count;
	return gray_realloc(ptr, count * elsiz);
}
	

char *
gray_strdup(const char *str)
{
	char *p;
	
	if (!str)
		return NULL;
	p = gray_malloc(strlen(str) + 1);
	return strcpy(p, str);
}


void
gray_pam_delete(char *x)
{
	PAM_OVERWRITE(x);
	free(x);
}

void
gray_cleanup_string(pam_handle_t *pamh, void *x, int error_status)
{
	gray_pam_delete(x);
}

void
gray_cleanup_regex(pam_handle_t *pamh, void *x, int error_status)
{
	regfree((regex_t*)x);
}

void
gray_make_str(pam_handle_t *pamh, const char *str, const char *name,
	      char **ret)
{
	int retval;
	char *newstr = XSTRDUP(str);

	retval = pam_set_data(pamh, name, (void *)newstr, gray_cleanup_string);
	if (retval != PAM_SUCCESS) {
		_pam_log(LOG_CRIT, 
			 "can't keep data [%s]: %s",
			 name,
			 pam_strerror(pamh, retval));
		gray_pam_delete(newstr);
	} else {
		*ret = newstr;
		newstr = NULL;
	}
}


Return to:

Send suggestions and report system problems to the System administrator.