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respecting source address when sending packets

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This commit is contained in:
Martin Willi 2007-02-15 11:35:10 +00:00
parent 61eb45caf5
commit 2c6584c0d2
1 changed files with 51 additions and 2 deletions
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53
src/charon/network/socket.c
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@ -320,6 +320,9 @@ status_t sender(private_socket_t *this, packet_t *packet)
ssize_t bytes_sent;
chunk_t data, marked;
host_t *src, *dst;
struct msghdr msg;
struct cmsghdr *cmsg;
struct iovec iov;
src = packet->get_source(packet);
dst = packet->get_destination(packet);
@ -375,8 +378,54 @@ status_t sender(private_socket_t *this, packet_t *packet)
return FAILED;
}
bytes_sent = sendto(skt, data.ptr, data.len, 0,
dst->get_sockaddr(dst), *(dst->get_sockaddr_len(dst)));
memset(&msg, 0, sizeof(struct msghdr));
msg.msg_name = dst->get_sockaddr(dst);;
msg.msg_namelen = *dst->get_sockaddr_len(dst);
iov.iov_base = data.ptr;
iov.iov_len = data.len;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
if (!dst->is_anyaddr(dst))
{
if (family == AF_INET)
{
char buf[CMSG_SPACE(sizeof(struct in_pktinfo))];
struct in_pktinfo *pktinfo;
struct sockaddr_in *sin;
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_IP;
cmsg->cmsg_type = IP_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg);
memset(pktinfo, 0, sizeof(struct in_pktinfo));
sin = (struct sockaddr_in*)src->get_sockaddr(src);
memcpy(&pktinfo->ipi_spec_dst, &sin->sin_addr, sizeof(struct in_addr));
}
else
{
char buf[CMSG_SPACE(sizeof(struct in6_pktinfo))];
struct in6_pktinfo *pktinfo;
struct sockaddr_in6 *sin;
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_IPV6;
cmsg->cmsg_type = IPV6_2292PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg);
memset(pktinfo, 0, sizeof(struct in6_pktinfo));
sin = (struct sockaddr_in6*)src->get_sockaddr(src);
memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr));
}
}
bytes_sent = sendmsg(skt, &msg, 0);
if (bytes_sent != data.len)
{