1 files changed, 0 insertions, 461 deletions
diff --git a/src/libstrongswan/utils/tun_device.c b/src/libstrongswan/utils/tun_device.c
deleted file mode 100644
index 36f3359c0..000000000
--- a/src/libstrongswan/utils/tun_device.c
+++ /dev/null
@@ -1,461 +0,0 @@
-/*
- * Copyright (C) 2012 Tobias Brunner
- * Copyright (C) 2012 Giuliano Grassi
- * Copyright (C) 2012 Ralf Sager
- * Hochschule fuer Technik Rapperswil
- * Copyright (C) 2012 Martin Willi
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <netinet/in.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <net/if.h>
-
-#ifdef __APPLE__
-#include <net/if_utun.h>
-#include <netinet/in_var.h>
-#include <sys/kern_control.h>
-#elif defined(__linux__)
-#include <linux/if_tun.h>
-#else
-#include <net/if_tun.h>
-#endif
-
-#include "tun_device.h"
-
-#include <library.h>
-#include <debug.h>
-#include <threading/thread.h>
-
-#define TUN_DEFAULT_MTU 1500
-
-typedef struct private_tun_device_t private_tun_device_t;
-
-struct private_tun_device_t {
-
-	/**
-	 * Public interface
-	 */
-	tun_device_t public;
-
-	/**
-	 * The TUN device's file descriptor
-	 */
-	int tunfd;
-
-	/**
-	 * Name of the TUN device
-	 */
-	char if_name[IFNAMSIZ];
-
-	/**
-	 * Socket used for ioctl() to set interface addr, ...
-	 */
-	int sock;
-
-	/**
-	 * The current MTU
-	 */
-	int mtu;
-};
-
-/**
- * Set the sockaddr_t from the given netmask
- */
-static void set_netmask(struct ifreq *ifr, int family, u_int8_t netmask)
-{
-	int len, bytes, bits;
-	char *target;
-
-	switch (family)
-	{
-		case AF_INET:
-		{
-			struct sockaddr_in *addr = (struct sockaddr_in*)&ifr->ifr_addr;
-			addr->sin_family = AF_INET;
-			target = (char*)&addr->sin_addr;
-			len = 4;
-			break;
-		}
-		case AF_INET6:
-		{
-			struct sockaddr_in6 *addr = (struct sockaddr_in6*)&ifr->ifr_addr;
-			addr->sin6_family = AF_INET6;
-			target = (char*)&addr->sin6_addr;
-			len = 16;
-			break;
-		}
-		default:
-			return;
-	}
-
-	bytes = (netmask + 7) / 8;
-	bits = (bytes * 8) - netmask;
-
-	memset(target, 0xff, bytes);
-	memset(target + bytes, 0x00, len - bytes);
-	target[bytes - 1] = bits ? (u_int8_t)(0xff << bits) : 0xff;
-}
-
-METHOD(tun_device_t, set_address, bool,
-	private_tun_device_t *this, host_t *addr, u_int8_t netmask)
-{
-	struct ifreq ifr;
-	int family;
-
-	family = addr->get_family(addr);
-	if ((netmask > 32 && family == AF_INET) || netmask > 128)
-	{
-		DBG1(DBG_LIB, "failed to set address on %s: invalid netmask",
-			 this->if_name);
-		return FALSE;
-	}
-
-	memset(&ifr, 0, sizeof(ifr));
-	strncpy(ifr.ifr_name, this->if_name, IFNAMSIZ);
-	memcpy(&ifr.ifr_addr, addr->get_sockaddr(addr), sizeof(sockaddr_t));
-
-	if (ioctl(this->sock, SIOCSIFADDR, &ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to set address on %s: %s",
-			 this->if_name, strerror(errno));
-		return FALSE;
-	}
-#ifdef __APPLE__
-	if (ioctl(this->sock, SIOCSIFDSTADDR, &ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to set dest address on %s: %s",
-			 this->if_name, strerror(errno));
-		return FALSE;
-	}
-#endif /* __APPLE__ */
-
-	set_netmask(&ifr, family, netmask);
-
-	if (ioctl(this->sock, SIOCSIFNETMASK, &ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to set netmask on %s: %s",
-			 this->if_name, strerror(errno));
-		return FALSE;
-	}
-	return TRUE;
-}
-
-METHOD(tun_device_t, up, bool,
-	private_tun_device_t *this)
-{
-	struct ifreq ifr;
-
-	memset(&ifr, 0, sizeof(ifr));
-	strncpy(ifr.ifr_name, this->if_name, IFNAMSIZ);
-
-	if (ioctl(this->sock, SIOCGIFFLAGS, &ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to get interface flags for %s: %s", this->if_name,
-			 strerror(errno));
-		return FALSE;
-	}
-
-	ifr.ifr_flags |= IFF_RUNNING | IFF_UP;
-
-	if (ioctl(this->sock, SIOCSIFFLAGS, &ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to set interface flags on %s: %s", this->if_name,
-			 strerror(errno));
-		return FALSE;
-	}
-	return TRUE;
-}
-
-METHOD(tun_device_t, set_mtu, bool,
-	private_tun_device_t *this, int mtu)
-{
-	struct ifreq ifr;
-
-	memset(&ifr, 0, sizeof(ifr));
-	strncpy(ifr.ifr_name, this->if_name, IFNAMSIZ);
-	ifr.ifr_mtu = mtu;
-
-	if (ioctl(this->sock, SIOCSIFMTU, &ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to set MTU on %s: %s", this->if_name,
-			 strerror(errno));
-		return FALSE;
-	}
-	this->mtu = mtu;
-	return TRUE;
-}
-
-METHOD(tun_device_t, get_mtu, int,
-	private_tun_device_t *this)
-{
-	struct ifreq ifr;
-
-	if (this->mtu > 0)
-	{
-		return this->mtu;
-	}
-
-	memset(&ifr, 0, sizeof(ifr));
-	strncpy(ifr.ifr_name, this->if_name, IFNAMSIZ);
-	this->mtu = TUN_DEFAULT_MTU;
-
-	if (ioctl(this->sock, SIOCGIFMTU, &ifr) == 0)
-	{
-		this->mtu = ifr.ifr_mtu;
-	}
-	return this->mtu;
-}
-
-METHOD(tun_device_t, get_name, char*,
-	private_tun_device_t *this)
-{
-	return this->if_name;
-}
-
-METHOD(tun_device_t, write_packet, bool,
-	private_tun_device_t *this, chunk_t packet)
-{
-	ssize_t s;
-
-	s = write(this->tunfd, packet.ptr, packet.len);
-	if (s < 0)
-	{
-		DBG1(DBG_LIB, "failed to write packet to TUN device %s: %s",
-			 this->if_name, strerror(errno));
-		return FALSE;
-	}
-	else if (s != packet.len)
-	{
-		return FALSE;
-	}
-	return TRUE;
-}
-
-METHOD(tun_device_t, read_packet, bool,
-	private_tun_device_t *this, chunk_t *packet)
-{
-	ssize_t len;
-	fd_set set;
-	bool old;
-
-	FD_ZERO(&set);
-	FD_SET(this->tunfd, &set);
-
-	old = thread_cancelability(TRUE);
-	len = select(this->tunfd + 1, &set, NULL, NULL, NULL);
-	thread_cancelability(old);
-
-	if (len < 0)
-	{
-		DBG1(DBG_LIB, "select on TUN device %s failed: %s", this->if_name,
-			 strerror(errno));
-		return FALSE;
-	}
-	/* FIXME: this is quite expensive for lots of small packets, copy from
-	 * local buffer instead? */
-	*packet = chunk_alloc(get_mtu(this));
-	len = read(this->tunfd, packet->ptr, packet->len);
-	if (len < 0)
-	{
-		DBG1(DBG_LIB, "reading from TUN device %s failed: %s", this->if_name,
-			 strerror(errno));
-		chunk_free(packet);
-		return FALSE;
-	}
-	packet->len = len;
-	return TRUE;
-}
-
-METHOD(tun_device_t, destroy, void,
-	private_tun_device_t *this)
-{
-	if (this->tunfd > 0)
-	{
-		close(this->tunfd);
-#ifdef __FreeBSD__
-		/* tun(4) says the following: "These network interfaces persist until
-		 * the if_tun.ko module is unloaded, or until removed with the
-		 * ifconfig(8) command."  So simply closing the FD is not enough. */
-		struct ifreq ifr;
-
-		memset(&ifr, 0, sizeof(ifr));
-		strncpy(ifr.ifr_name, this->if_name, IFNAMSIZ);
-		if (ioctl(this->sock, SIOCIFDESTROY, &ifr) < 0)
-		{
-			DBG1(DBG_LIB, "failed to destroy %s: %s", this->if_name,
-				 strerror(errno));
-		}
-#endif /* __FreeBSD__ */
-	}
-	if (this->sock > 0)
-	{
-		close(this->sock);
-	}
-	free(this);
-}
-
-/**
- * Initialize the tun device
- */
-static bool init_tun(private_tun_device_t *this, const char *name_tmpl)
-{
-#ifdef __APPLE__
-
-	struct ctl_info info;
-	struct sockaddr_ctl addr;
-	socklen_t size = IFNAMSIZ;
-
-	memset(&info, 0, sizeof(info));
-	memset(&addr, 0, sizeof(addr));
-
-	this->tunfd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL);
-	if (this->tunfd < 0)
-	{
-		DBG1(DBG_LIB, "failed to open tundevice PF_SYSTEM socket: %s",
-			 strerror(errno));
-		return FALSE;
-	}
-
-	/* get a control identifier for the utun kernel extension */
-	strncpy(info.ctl_name, UTUN_CONTROL_NAME, strlen(UTUN_CONTROL_NAME));
-	if (ioctl(this->tunfd, CTLIOCGINFO, &info) < 0)
-	{
-		DBG1(DBG_LIB, "failed to ioctl tundevice: %s", strerror(errno));
-		close(this->tunfd);
-		return FALSE;
-	}
-
-	addr.sc_id = info.ctl_id;
-	addr.sc_len = sizeof(addr);
-	addr.sc_family = AF_SYSTEM;
-	addr.ss_sysaddr = AF_SYS_CONTROL;
-	/* allocate identifier dynamically */
-	addr.sc_unit = 0;
-
-	if (connect(this->tunfd, (struct sockaddr*)&addr, sizeof(addr)) < 0)
-	{
-		DBG1(DBG_LIB, "failed to connect tundevice: %s", strerror(errno));
-		close(this->tunfd);
-		return FALSE;
-	}
-	if (getsockopt(this->tunfd, SYSPROTO_CONTROL, UTUN_OPT_IFNAME,
-				   this->if_name, &size) < 0)
-	{
-		DBG1(DBG_LIB, "getting tundevice name failed: %s", strerror(errno));
-		close(this->tunfd);
-		return FALSE;
-	}
-	return TRUE;
-
-#elif defined(IFF_TUN)
-
-	struct ifreq ifr;
-
-	strncpy(this->if_name, name_tmpl ?: "tun%d", IFNAMSIZ);
-	this->if_name[IFNAMSIZ-1] = '\0';
-
-	this->tunfd = open("/dev/net/tun", O_RDWR);
-	if (this->tunfd < 0)
-	{
-		DBG1(DBG_LIB, "failed to open /dev/net/tun: %s", strerror(errno));
-		return FALSE;
-	}
-
-	memset(&ifr, 0, sizeof(ifr));
-
-	/* TUN device, no packet info */
-	ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
-
-	strncpy(ifr.ifr_name, this->if_name, IFNAMSIZ);
-	if (ioctl(this->tunfd, TUNSETIFF, (void*)&ifr) < 0)
-	{
-		DBG1(DBG_LIB, "failed to configure TUN device: %s", strerror(errno));
-		close(this->tunfd);
-		return FALSE;
-	}
-	strncpy(this->if_name, ifr.ifr_name, IFNAMSIZ);
-	return TRUE;
-
-#else /* !IFF_TUN */
-
-	/* this works on FreeBSD and might also work on Linux with older TUN
-	 * driver versions (no IFF_TUN) */
-	char devname[IFNAMSIZ];
-	int i;
-
-	if (name_tmpl)
-	{
-		DBG1(DBG_LIB, "arbitrary naming of TUN devices is not supported");
-	}
-
-	for (i = 0; i < 256; i++)
-	{
-		snprintf(devname, IFNAMSIZ, "/dev/tun%d", i);
-		this->tunfd = open(devname, O_RDWR);
-		if (this->tunfd > 0)
-		{	/* for ioctl(2) calls only the interface name is used */
-			snprintf(this->if_name, IFNAMSIZ, "tun%d", i);
-			break;
-		}
-		DBG1(DBG_LIB, "failed to open %s: %s", this->if_name, strerror(errno));
-	}
-	return this->tunfd > 0;
-
-#endif /* !__APPLE__ */
-}
-
-/*
- * Described in header
- */
-tun_device_t *tun_device_create(const char *name_tmpl)
-{
-	private_tun_device_t *this;
-
-	INIT(this,
-		.public = {
-			.read_packet = _read_packet,
-			.write_packet = _write_packet,
-			.get_mtu = _get_mtu,
-			.set_mtu = _set_mtu,
-			.get_name = _get_name,
-			.set_address = _set_address,
-			.up = _up,
-			.destroy = _destroy,
-		},
-		.tunfd = -1,
-		.sock = -1,
-	);
-
-	if (!init_tun(this, name_tmpl))
-	{
-		free(this);
-		return NULL;
-	}
-	DBG1(DBG_LIB, "created TUN device: %s", this->if_name);
-
-	this->sock = socket(AF_INET, SOCK_DGRAM, 0);
-	if (this->sock < 0)
-	{
-		DBG1(DBG_LIB, "failed to open socket to configure TUN device");
-		destroy(this);
-		return NULL;
-	}
-	return &this->public;
-}