1 files changed, 0 insertions, 424 deletions
diff --git a/mac-tap/tuntap/src/tun/tun.cc b/mac-tap/tuntap/src/tun/tun.cc
deleted file mode 100644
index 91694388..00000000
--- a/mac-tap/tuntap/src/tun/tun.cc
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * ip tunnel device for MacOSX.
- *
- * tun_interface class definition
- */
-/*
- * Copyright (c) 2011 Mattias Nissler <mattias.nissler@gmx.de>
- *
- * Redistribution and use in source and binary forms, with or without modification, are permitted
- * provided that the following conditions are met:
- *
- *   1. Redistributions of source code must retain the above copyright notice, this list of
- *      conditions and the following disclaimer.
- *   2. Redistributions in binary form must reproduce the above copyright notice, this list of
- *      conditions and the following disclaimer in the documentation and/or other materials provided
- *      with the distribution.
- *   3. The name of the author may not be used to endorse or promote products derived from this
- *      software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "tun.h"
-
-extern "C" {
-
-#include <sys/syslog.h>
-#include <sys/param.h>
-
-#include <net/if_types.h>
-#include <net/kpi_protocol.h>
-
-#include <netinet/ip.h>
-
-}
-
-#if 0
-#define dprintf(...)			log(LOG_INFO, __VA_ARGS__)
-#else
-#define dprintf(...)
-#endif
-
-/* members */
-bool
-tun_interface::initialize(unsigned short major, unsigned short unit)
-{
-	this->unit = unit;
-	this->family_name = TUN_FAMILY_NAME;
-	this->family = IFNET_FAMILY_TUN;
-	this->type = IFT_OTHER;
-	bzero(unique_id, UIDLEN);
-	snprintf(unique_id, UIDLEN, "%s%d", family_name, unit);
-
-	dprintf("tun: starting interface %s%d\n", family_name, unit);
-
-	/* register character device */
-	if (!tuntap_interface::register_chardev(major))
-		return false;
-
-	return true;
-}
-
-void
-tun_interface::shutdown()
-{
-	dprintf("tun: shutting down interface %s%d\n", family_name, unit);
-
-	unregister_chardev();
-}
-
-int
-tun_interface::initialize_interface()
-{
-	prepend_af = false;
-
-	/* register interface */
-	if (!tuntap_interface::register_interface(NULL, NULL, 0))
-		return EIO;
-		
-	/* set mtu */
-	ifnet_set_mtu(ifp, TUN_MTU);
-	/* set header length */
-	ifnet_set_hdrlen(ifp, 0);
-	/* add the pointopoint flag */
-	ifnet_set_flags(ifp, IFF_POINTOPOINT, IFF_POINTOPOINT);
-
-	/* we must call bpfattach(). Otherwise we deadlock BPF while unloading. Seems to be a bug in
-	 * the kernel, see bpfdetach() in net/bpf.c, it will return without releasing the lock if
-	 * the interface wasn't attached. I wonder what they were smoking while writing it ;-)
-	 */
-	bpfattach(ifp, DLT_NULL, sizeof(u_int32_t));
-
-	return 0;
-}
-
-void
-tun_interface::shutdown_interface()
-{
-	dprintf("tun: shutting down network interface of %s%d\n", family_name, unit);
-
-	/* detach all protocols */
-	for (unsigned int i = 0; i < MAX_ATTACHED_PROTOS; i++) {
-		if (attached_protos[i].used) {
-			errno_t err = ifnet_detach_protocol(ifp, attached_protos[i].proto);
-			if (err)
-				log(LOG_WARNING, "tun: could not detach protocol %d from %s%d\n",
-						attached_protos[i].proto, family_name, unit);
-		}
-	}
-
-	cleanup_interface();
-	unregister_interface();
-}
-
-void
-tun_interface::notify_bpf(mbuf_t mb, bool out)
-{
-	auto_lock l(&bpf_lock);
-
-	if ((out && bpf_mode == BPF_MODE_OUTPUT)
-			|| (!out && bpf_mode == BPF_MODE_INPUT)
-			|| (bpf_mode == BPF_MODE_INPUT_OUTPUT)) {
-		/* see wether AF is prepended */
-		if (!prepend_af) {
-			mbuf_t dummy_mb;
-			struct ip *iphdr;
-			u_int32_t af;
-			u_int8_t ipv;
-			errno_t err;
-
-			/* see what we have: IPv4 or IPv6 */
-			iphdr = (struct ip*) mbuf_data(mb);
-#ifdef _IP_VHL
-			ipv = IP_VHL_V(iphdr->ip_vhl);
-#else
-			ipv = iphdr->ip_v;
-#endif
-			if (ipv == 4)
-				af = AF_INET;
-			else if (ipv == 6)
-				af = AF_INET6;
-			else {
-				/* what to do? */
-				log(LOG_WARNING, "tun: unsupported IP version %d.\n", ipv);
-				return;
-			}
-
-			/* prepend a dummy header */
-			err = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &dummy_mb);
-			if (err) {
-				log(LOG_WARNING, "tun: could not allocate temporary mbuf: %d\n",
-						err);
-				return;
-			}
-
-			mbuf_setnext(dummy_mb, mb);
-			mbuf_setlen(dummy_mb, sizeof(u_int32_t));
-			*((u_int32_t *) mbuf_data(dummy_mb)) = htonl(af);
-
-			/* call bpf */
-			(*bpf_callback)(ifp, dummy_mb);
-
-			/* free the dummy mbuf */
-			mbuf_free(dummy_mb);
-		} else {
-			/* just pass it through */
-			(*bpf_callback)(ifp, mb);
-		}
-	}
-}
-
-int
-tun_interface::cdev_ioctl(u_long cmd, caddr_t data, int fflag, proc_t p)
-{
-	int error;
-
-	/* if the superclass handles it, we're done */
-	error = tuntap_interface::cdev_ioctl(cmd, data, fflag, p);
-	if (!error)
-		return 0;
-
-	switch (cmd) {
-		case TUNSIFHEAD:
-			prepend_af = *((int *) data) ? true : false;
-			/* adjust header length. see tuntap_interface::cdev_write */
-			ifnet_set_hdrlen(ifp, prepend_af ? sizeof(u_int32_t) : 0);
-			return 0;
-		case TUNGIFHEAD:
-			*((int *) data) = prepend_af;
-			return 0;
-	}
-
-	return ENOTTY;
-}
-
-errno_t
-tun_interface::if_demux(mbuf_t m, char *header, protocol_family_t *proto)
-{
-	u_int32_t family;
-
-	dprintf("tun: demux\n");
-
-	/* size check */
-	if (mbuf_len(m) < sizeof(u_int32_t))
-		return ENOENT;
-
-	/* if we are prepending AF for output, we expect to also have it at the beginning of
-	 * incoming packets */
-	if (!prepend_af) {
-		struct ip *iphdr = (struct ip*) mbuf_data(m);
-		u_int8_t ipv;
-
-		dprintf("tun_demux: m: %p data: %p\n", m, mbuf_data(m));
-
-#ifdef _IPVHL
-		ipv = IP_VHL_V(iphdr->ip_vhl);
-#else
-		ipv = iphdr->ip_v;
-#endif
-
-		if (ipv == 4)
-			family = AF_INET;
-		else if (ipv == 6)
-			family = AF_INET6;
-		else {
-			/* what to do? */
-			log(LOG_WARNING, "tun: unsupported IP version %d\n", ipv);
-			return ENOENT;
-		}
-	} else {
-		family = ntohl(*((u_int32_t *) header));
-	}
-
-	/* find the protocol entry */
-	for (unsigned int i = 0; i < MAX_ATTACHED_PROTOS; i++) {
-		if (attached_protos[i].used && attached_protos[i].family == family) {
-			*proto = attached_protos[i].proto;
-			return 0;
-		}
-	}
-
-	log(LOG_WARNING, "tun: no protocol found for family %d\n", family);
-
-	return ENOENT;
-}
-
-errno_t
-tun_interface::if_framer(mbuf_t *m, const struct sockaddr *dest, const char *dest_linkaddr,
-		const char *frame_type)
-{
-	dprintf("tun: framer\n");
-
-	/* check whether to prepend family field */
-	if (prepend_af) {
-		errno_t err;
-		mbuf_t nm = *m;
-
-		/* get space */
-		err = mbuf_prepend(&nm, sizeof(u_int32_t), MBUF_WAITOK);
-		if (err) {
-			dprintf("tun: could not prepend data to mbuf: %d\n", err);
-			return err;
-		}
-		*m = nm;
-
-		*((u_int32_t *) mbuf_data(*m)) = htonl(dest->sa_family);
-	}
-
-	return 0;
-}
-
-errno_t
-tun_interface::if_add_proto(protocol_family_t proto, const struct ifnet_demux_desc *desc,
-		u_int32_t ndesc)
-{
-	errno_t err;
-
-	dprintf("tun: if_add_proto proto %d\n", proto);
-
-	for (unsigned int i = 0; i < ndesc; i++) {
-		/* try to add the protocol */
-		err = add_one_proto(proto, desc[i]);
-		if (err != 0) {
-			/* if that fails, remove everything stored so far */
-			if_del_proto(proto);
-			return err;
-		}
-	}
-
-	return 0;
-}
-
-errno_t
-tun_interface::if_del_proto(protocol_family_t proto)
-{
-	dprintf("tun: if_del_proto proto %d\n", proto);
-
-	/* delete all matching entries in attached_protos */
-	for (unsigned int i = 0; i < MAX_ATTACHED_PROTOS; i++) {
-		if (attached_protos[i].proto == proto)
-			attached_protos[i].used = false;
-	}
-
-	return 0;
-}
-
-errno_t
-tun_interface::if_check_multi(const struct sockaddr *maddr)
-{
-	dprintf("tun: check_multi family %d\n", maddr->sa_family);
-
-	/* see whether it is an IPv4 multicast address */
-	if (maddr->sa_family == AF_INET) {
-		struct sockaddr_in *imaddr = (struct sockaddr_in *) maddr;
-
-		if (IN_MULTICAST(ntohl(imaddr->sin_addr.s_addr)))
-			return 0;
-		else
-			return EADDRNOTAVAIL;
-	} else if (maddr->sa_family == AF_INET6) {
-		struct sockaddr_in6 *imaddr = (struct sockaddr_in6 *) maddr;
-
-		if (IN6_IS_ADDR_MULTICAST(&imaddr->sin6_addr))
-			return 0;
-		else
-			return EADDRNOTAVAIL;
-	}
-
-	return EOPNOTSUPP;
-}
-
-errno_t
-tun_interface::add_one_proto(protocol_family_t proto, const struct ifnet_demux_desc &dd)
-{
-	int free = -1;
-
-	/* see if the protocol is already registered */
-	for (unsigned int i = 0; i < MAX_ATTACHED_PROTOS; i++) {
-		if (attached_protos[i].used) {
-			if (dd.type == attached_protos[i].family) {
-				/* already registered */
-				if (attached_protos[i].proto == proto) {
-					/* matches the old entry */
-					return 0;
-				} else
-					return EEXIST;
-			}
-		} else if (free == -1)
-			free = i;
-	}
-
-	/* did we find a free entry? */
-	if (free == -1)
-		/* is ENOBUFS correct? */
-		return ENOBUFS;
-
-	dprintf("tun: adding proto family %d proto %d\n", dd.type, proto);
-
-	/* ok, save information */
-	attached_protos[free].used = true;
-	attached_protos[free].family = dd.type;
-	attached_protos[free].proto = proto;
-
-	return 0;
-}
-
-/* tun_manager members */
-tuntap_interface *
-tun_manager::create_interface()
-{
-	return new tun_interface();
-}
-
-bool
-tun_manager::shutdown()
-{
-	if (tuntap_inited) {
-		if (tuntap_manager::shutdown())
-			tuntap_inited = false;
-		else
-			return false;
-	}
-
-	/* unregister INET and INET6 protocol families */
-	proto_unregister_plumber(PF_INET, IFNET_FAMILY_TUN);
-	proto_unregister_plumber(PF_INET6, IFNET_FAMILY_TUN);
-
-	return true;
-}
-
-bool
-tun_manager::initialize(unsigned int count, char *family)
-{
-	errno_t err;
-
-	tuntap_inited = false;
-
-	/* register INET and INET6 protocol families */
-	err = proto_register_plumber(PF_INET, IFNET_FAMILY_TUN, tun_inet_attach, tun_inet_detach);
-	if (err) {
-		log(LOG_ERR, "tun: could not register PF_INET protocol family: %d\n", err);
-		return false;
-	}
-
-	err = proto_register_plumber(PF_INET6, IFNET_FAMILY_TUN, tun_inet6_attach,
-			tun_inet6_detach);
-	if (err) {
-		log(LOG_ERR, "tun: could not register PF_INET6 protocol family: %d\n", err);
-		return false;
-	}
-
-	tuntap_inited = true;
-
-	/* have the superclass handle the rest */
-	return tuntap_manager::initialize(count, family);
-}
-