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
|
/*
* BIRD Internet Routing Daemon -- NetBSD Multicasting and Network Includes
*
* (c) 2004 Ondrej Filip <feela@network.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifdef IPV6
static inline void
set_inaddr(struct in6_addr * ia, ip_addr a)
{
ipa_hton(a);
memcpy(ia, &a, sizeof(a));
}
#else
#include <net/if.h>
static inline void
set_inaddr(struct in_addr * ia, ip_addr a)
{
ipa_hton(a);
memcpy(&ia->s_addr, &a, sizeof(a));
}
static inline char *
sysio_mcast_setup(sock * s)
{
u8 zero = 0;
u8 one = 1;
if (ipa_nonzero(s->daddr)) {
if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_LOOP, &zero, sizeof(zero)) < 0)
return "IP_MULTICAST_LOOP";
if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_TTL, &one, sizeof(one)) < 0)
return "IP_MULTICAST_TTL";
}
return NULL;
}
static inline char *
sysio_mcast_join(sock * s)
{
struct in_addr m;
struct ip_mreq mreq;
char *err;
set_inaddr(&m, s->iface->addr->ip );
bzero(&mreq, sizeof(mreq));
set_inaddr(&mreq.imr_interface, s->iface->addr->ip);
set_inaddr(&mreq.imr_multiaddr, s->daddr);
/* And this one sets interface for _receiving_ multicasts from */
if (ipa_nonzero(s->daddr) &&
setsockopt(s->fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
return "IP_ADD_MEMBERSHIP";
/* This defines where should we send _outgoing_ multicasts */
if (ipa_nonzero(s->daddr) && setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0)
return "IP_MULTICAST_IF";
if (err = sysio_mcast_setup(s))
return err;
return NULL;
}
#endif
#include <netinet/tcp.h>
#ifndef TCP_KEYLEN_MAX
#define TCP_KEYLEN_MAX 80
#endif
#ifndef TCP_SIG_SPI
#define TCP_SIG_SPI 0x1000
#endif
/*
* FIXME: Passwords has to be set by setkey(8) command. This is the same
* behaviour like Quagga. We need to add code for SA/SP entries
* management.
*/
static int
sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd)
{
int enable = 0;
if (passwd)
{
int len = strlen(passwd);
enable = len ? TCP_SIG_SPI : 0;
if (len > TCP_KEYLEN_MAX)
{
log(L_ERR "MD5 password too long");
return -1;
}
}
int rv = setsockopt(s->fd, IPPROTO_TCP, TCP_MD5SIG, &enable, sizeof(enable));
if (rv < 0)
{
if (errno == ENOPROTOOPT)
log(L_ERR "Kernel does not support TCP MD5 signatures");
else
log(L_ERR "sk_set_md5_auth_int: setsockopt: %m");
}
return rv;
}
|
