fromsa.c
2.3 KB
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
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2011-2012 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
#include <stdlib.h>
#include <mailutils/cidr.h>
#include <mailutils/errno.h>
static void
uint32_to_bytes (unsigned char *bytes, uint32_t u)
{
int i;
for (i = 0; i < 4; i++)
{
bytes[i] = u & 0xff;
u >>= 8;
}
}
int
_mu_inaddr_to_bytes (int af, void *buf, unsigned char *bytes)
{
uint32_t u;
switch (af)
{
case AF_INET:
memcpy (&u, buf, sizeof u);
uint32_to_bytes (bytes, u);
return 4;
#ifdef MAILUTILS_IPV6
case AF_INET6:
memcpy (bytes, buf, 16);
return 16;
#endif
}
return 0;
}
int
_mu_sockaddr_to_bytes (unsigned char *bytes, struct sockaddr const *sa)
{
switch (sa->sa_family)
{
case AF_INET:
uint32_to_bytes (bytes, ((struct sockaddr_in*)sa)->sin_addr.s_addr);
return 4;
#ifdef MAILUTILS_IPV6
case AF_INET6:
memcpy (bytes, &((struct sockaddr_in6*)sa)->sin6_addr, 16);
return 16;
#endif
}
return 0;
}
int
mu_cidr_from_sockaddr (struct mu_cidr *cidr, const struct sockaddr *sa)
{
unsigned char address[MU_INADDR_BYTES];
int len;
int i;
len = _mu_sockaddr_to_bytes (address, sa);
if (len == 0)
return MU_ERR_FAMILY;
cidr->family = sa->sa_family;
cidr->len = len;
memcpy (cidr->address, address, sizeof (cidr->address));
for (i = 0; i < MU_INADDR_BYTES; i++)
cidr->netmask[i] = 0xff;
return 0;
}