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Set the ports of all hosts installed via the PF_KEY kernel interface to zero.

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This commit is contained in:
Tobias Brunner
2010-06-15 10:11:57 +02:00
parent 5d4c258de7
commit 668e84d904
1 changed files with 39 additions and 17 deletions
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src/libcharon/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
+39 -17
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2008-2009 Tobias Brunner
* Copyright (C) 2008-2010 Tobias Brunner
* Copyright (C) 2008 Andreas Steffen
* Hochschule fuer Technik Rapperswil
*
@@ -600,17 +600,43 @@ static int lookup_algorithm(kernel_algorithm_t *list, int ikev2)
}
/**
* add a host behind a sadb_address extension
* Copy a host_t as sockaddr_t to the given memory location. Ports are
* reset to zero as per RFC 2367.
* @return the number of bytes copied
*/
static size_t hostcpy(void *dest, host_t *host)
{
sockaddr_t *addr = host->get_sockaddr(host), *dest_addr = dest;
socklen_t *len = host->get_sockaddr_len(host);
memcpy(dest, addr, *len);
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
dest_addr->sa_len = *len;
#endif
switch (dest_addr->sa_family)
{
case AF_INET:
{
struct sockaddr_in *sin = dest;
sin->sin_port = 0;
break;
}
case AF_INET6:
{
struct sockaddr_in6 *sin6 = dest;
sin6->sin6_port = 0;
break;
}
}
return *len;
}
/**
* add a host behind an sadb_address extension
*/
static void host2ext(host_t *host, struct sadb_address *ext)
{
sockaddr_t *host_addr = host->get_sockaddr(host);
socklen_t *len = host->get_sockaddr_len(host);
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
host_addr->sa_len = *len;
#endif
memcpy((char*)(ext + 1), host_addr, *len);
ext->sadb_address_len = PFKEY_LEN(sizeof(*ext) + *len);
size_t len = hostcpy(ext + 1, host);
ext->sadb_address_len = PFKEY_LEN(sizeof(*ext) + len);
}
/**
@@ -1679,14 +1705,10 @@ METHOD(kernel_ipsec_t, add_policy, status_t,
req->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE;
if (mode == MODE_TUNNEL)
{
sockaddr_t *sa;
socklen_t sl;
sa = src->get_sockaddr(src);
sl = *src->get_sockaddr_len(src);
memcpy(req + 1, sa, sl);
sa = dst->get_sockaddr(dst);
memcpy((u_int8_t*)(req + 1) + sl, sa, sl);
req->sadb_x_ipsecrequest_len += sl * 2;
len = hostcpy(req + 1, src);
req->sadb_x_ipsecrequest_len += len;
len = hostcpy((char*)(req + 1) + len, dst);
req->sadb_x_ipsecrequest_len += len;
}
pol->sadb_x_policy_len += PFKEY_LEN(req->sadb_x_ipsecrequest_len);