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Linux specific TCP-MD5 handling moved to sysdep/linux/sysio.h

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FreeBSD coded added. BSD cannot set BGP passwords itself.
This has to be done by external command.
This commit is contained in:
Ondrej Filip 2009-05-04 18:17:46 +02:00
parent 1bc4b2cc84
commit 2b70f0742e
3 changed files with 80 additions and 37 deletions
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45
sysdep/bsd/sysio.h
View file

@ -74,3 +74,48 @@ sysio_mcast_join(sock * s)
}
#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;
}

35
sysdep/linux/sysio.h
View file

@ -160,3 +160,38 @@ struct tcp_md5sig {
};
#endif
static int
sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd)
{
struct tcp_md5sig md5;
memset(&md5, 0, sizeof(md5));
memcpy(&md5.tcpm_addr, (struct sockaddr *) sa, sizeof(*sa));
if (passwd)
{
int len = strlen(passwd);
if (len > TCP_MD5SIG_MAXKEYLEN)
{
log(L_ERR "MD5 password too long");
return -1;
}
md5.tcpm_keylen = len;
memcpy(&md5.tcpm_key, passwd, len);
}
int rv = setsockopt(s->fd, IPPROTO_TCP, TCP_MD5SIG, &md5, sizeof(md5));
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;
}

37
sysdep/unix/io.c
View file

@ -738,43 +738,6 @@ sk_set_ttl(sock *s, int ttl)
}
/* FIXME: check portability */
static int
sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd)
{
struct tcp_md5sig md5;
memset(&md5, 0, sizeof(md5));
memcpy(&md5.tcpm_addr, (struct sockaddr *) sa, sizeof(*sa));
if (passwd)
{
int len = strlen(passwd);
if (len > TCP_MD5SIG_MAXKEYLEN)
{
log(L_ERR "MD5 password too long");
return -1;
}
md5.tcpm_keylen = len;
memcpy(&md5.tcpm_key, passwd, len);
}
int rv = setsockopt(s->fd, IPPROTO_TCP, TCP_MD5SIG, &md5, sizeof(md5));
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;
}
/**
* sk_set_md5_auth - add / remove MD5 security association for given socket.
* @s: socket