diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2011-07-20 12:20:15 +0200 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2011-07-23 10:19:49 -0500 |
| commit | 5a82362ad0bf06bba3377d63ca0ecd05fb74f322 (patch) | |
| tree | 86848ea69e666e4b29ba2541720207eb3fab4518 | |
| parent | c54ed5bcdd8ed29f9cdfcfc0e456b6ec1f25d2c3 (diff) | |
slirp: Strictly associate DHCP/BOOTP and TFTP with virtual host
Instead of accepting every DHCP/BOOTP and TFTP packet, only invoke the
built-in servers if the target is the virtual host.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
| -rw-r--r-- | slirp/udp.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/slirp/udp.c b/slirp/udp.c index f1a9a10948..cefd50b792 100644 --- a/slirp/udp.c +++ b/slirp/udp.c @@ -120,15 +120,18 @@ udp_input(register struct mbuf *m, int iphlen) /* * handle DHCP/BOOTP */ - if (ntohs(uh->uh_dport) == BOOTP_SERVER) { - bootp_input(m); - goto bad; - } + if (ntohs(uh->uh_dport) == BOOTP_SERVER && + (ip->ip_dst.s_addr == slirp->vhost_addr.s_addr || + ip->ip_dst.s_addr == 0xffffffff)) { + bootp_input(m); + goto bad; + } /* * handle TFTP */ - if (ntohs(uh->uh_dport) == TFTP_SERVER) { + if (ntohs(uh->uh_dport) == TFTP_SERVER && + ip->ip_dst.s_addr == slirp->vhost_addr.s_addr) { tftp_input(m); goto bad; } |