Rename tuntap to iface to match struct name

1 files changed, 0 insertions, 441 deletions

diff --git a/src/tuntap.c b/src/tuntap.c
deleted file mode 100644
index a817090..0000000
--- a/src/tuntap.c
+++ /dev/null
@@ -1,441 +0,0 @@
-/*
-  Copyright (c) 2012-2015, Matthias Schiffer <mschiffer@universe-factory.net>
-  All rights reserved.
-
-  Android port contributor:
-  Copyright (c) 2014-2015, Haofeng "Rick" Lei <ricklei@gmail.com>
-  All rights reserved.
-
-  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.
-
-  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
-*/
-
-/**
-   \file
-
-   Management of the TUN/TAP interface
-*/
-
-#include "fastd.h"
-#include "poll.h"
-
-#include <net/if.h>
-#include <sys/ioctl.h>
-
-#ifdef __linux__
-
-#include <linux/if_tun.h>
-
-#else
-
-#ifndef __APPLE__
-#include <net/if_tun.h>
-#endif
-
-#ifdef __FreeBSD__
-#include <net/if_tap.h>
-#endif
-
-#endif
-
-
-/** Defines if the platform uses an address family header on TUN interfaces */
-#if defined(__linux__) || defined(__APPLE__)
-static const bool multiaf_tun = false;
-#else
-static const bool multiaf_tun = true;
-#endif
-
-#ifdef __linux__
-
-/** Opens the TUN/TAP device helper shared by Android and Linux targets */
-static void tuntap_open_linux(fastd_iface_t *iface, const char *dev_name) {
-	struct ifreq ifr = {};
-
-	iface->fd = FASTD_POLL_FD(POLL_TYPE_IFACE, open(dev_name, O_RDWR|O_NONBLOCK));
-	if (iface->fd.fd < 0)
-		exit_errno("could not open tun/tap device file");
-
-	if (conf.ifname)
-		strncpy(ifr.ifr_name, conf.ifname, IFNAMSIZ-1);
-
-	switch (conf.mode) {
-	case MODE_TAP:
-		ifr.ifr_flags = IFF_TAP;
-		break;
-
-	case MODE_TUN:
-		ifr.ifr_flags = IFF_TUN;
-		break;
-
-	default:
-		exit_bug("invalid mode");
-	}
-
-	ifr.ifr_flags |= IFF_NO_PI;
-	if (ioctl(iface->fd.fd, TUNSETIFF, &ifr) < 0)
-		exit_errno("TUNSETIFF ioctl failed");
-
-	iface->name = fastd_strndup(ifr.ifr_name, IFNAMSIZ-1);
-
-	int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
-	if (ctl_sock < 0)
-		exit_errno("socket");
-
-	if (ioctl(ctl_sock, SIOCGIFMTU, &ifr) < 0)
-		exit_errno("SIOCGIFMTU ioctl failed");
-
-	if (ifr.ifr_mtu != conf.mtu) {
-		ifr.ifr_mtu = conf.mtu;
-		if (ioctl(ctl_sock, SIOCSIFMTU, &ifr) < 0)
-			exit_errno("SIOCSIFMTU ioctl failed");
-	}
-
-	if (close(ctl_sock))
-		pr_error_errno("close");
-
-}
-
-#endif
-
-#if defined(__ANDROID__)
-
-/** Opens the TUN/TAP device */
-static void tuntap_open(fastd_iface_t *iface) {
-	if (conf.android_integration) {
-		if (conf.mode != MODE_TUN)
-			exit_error("Non root Android supports only TUN mode");
-
-		pr_debug("using android TUN fd");
-		iface->fd = FASTD_POLL_FD(POLL_TYPE_IFACE, fastd_android_receive_tunfd());
-
-		fastd_android_send_pid();
-	} else {
-		/* this requires root on Android */
-		tuntap_open_linux(iface, "/dev/tun");
-	}
-}
-
-#elif defined(__linux__)
-
-/** Opens the TUN/TAP device */
-static void tuntap_open(fastd_iface_t *iface) {
-	tuntap_open_linux(iface, "/dev/net/tun");
-}
-
-#elif defined(__FreeBSD__) || defined(__OpenBSD__)
-
-/** Sets the MTU of the TUN/TAP device */
-static void set_tun_mtu(fastd_iface_t *iface) {
-	struct tuninfo tuninfo;
-
-	if (ioctl(iface->fd.fd, TUNGIFINFO, &tuninfo) < 0)
-		exit_errno("TUNGIFINFO ioctl failed");
-
-	tuninfo.mtu = conf.mtu;
-
-	if (ioctl(iface->fd.fd, TUNSIFINFO, &tuninfo) < 0)
-		exit_errno("TUNSIFINFO ioctl failed");
-}
-
-
-#ifdef __FreeBSD__
-
-/** Sets the MTU of the TAP device */
-static void set_tap_mtu(fastd_iface_t *iface) {
-	struct tapinfo tapinfo;
-
-	if (ioctl(iface->fd.fd, TAPGIFINFO, &tapinfo) < 0)
-		exit_errno("TAPGIFINFO ioctl failed");
-
-	tapinfo.mtu = conf.mtu;
-
-	if (ioctl(iface->fd.fd, TAPSIFINFO, &tapinfo) < 0)
-		exit_errno("TAPSIFINFO ioctl failed");
-}
-
-/** Sets up the TUN device */
-static void setup_tun(fastd_iface_t *iface) {
-	int one = 1;
-	if (ioctl(iface->fd.fd, TUNSIFHEAD, &one) < 0)
-		exit_errno("TUNSIFHEAD ioctl failed");
-
-	set_tun_mtu(iface);
-}
-
-/** Sets up the TAP device */
-static void setup_tap(fastd_iface_t *iface) {
-	struct ifreq ifr = {};
-
-	if (ioctl(iface->fd.fd, TAPGIFNAME, &ifr) < 0)
-		exit_errno("TAPGIFNAME ioctl failed");
-
-	free(iface->name);
-	iface->name = fastd_strndup(ifr.ifr_name, IFNAMSIZ-1);
-
-	set_tap_mtu(iface);
-}
-
-/** Opens the TUN/TAP device */
-static void tuntap_open(fastd_iface_t *iface) {
-	char ifname[5+IFNAMSIZ] = "/dev/";
-	const char *type;
-
-	switch (conf.mode) {
-	case MODE_TAP:
-		type = "tap";
-		break;
-
-	case MODE_TUN:
-		type = "tun";
-		break;
-
-	default:
-		exit_bug("invalid mode");
-	}
-
-	if (conf.ifname) {
-		if (strncmp(conf.ifname, type, 3) != 0)
-			exit_error("`%s' doesn't seem to be a %s device", conf.ifname, type);
-
-		strncat(ifname, conf.ifname, IFNAMSIZ-1);
-	}
-	else {
-		strncat(ifname, type, IFNAMSIZ-1);
-	}
-
-	iface->fd = FASTD_POLL_FD(POLL_TYPE_IFACE, open(ifname, O_RDWR|O_NONBLOCK));
-	if (iface->fd.fd < 0)
-		exit_errno("could not open tun/tap device file");
-
-	if (!(iface->name = fdevname_r(iface->fd.fd, fastd_alloc(IFNAMSIZ), IFNAMSIZ)))
-		exit_errno("could not get tun/tap interface name");
-
-	switch (conf.mode) {
-	case MODE_TAP:
-		setup_tap(iface);
-		break;
-
-	case MODE_TUN:
-		setup_tun(iface);
-		break;
-
-	default:
-		exit_bug("invalid mode");
-	}
-}
-
-#else /* __OpenBSD__ */
-
-static void set_link0(fastd_iface_t *iface, bool set) {
-	struct ifreq ifr = {};
-
-	int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
-	if (ctl_sock < 0)
-		exit_errno("socket");
-
-	strncpy(ifr.ifr_name, iface->name, IFNAMSIZ-1);
-	if (ioctl(ctl_sock, SIOCGIFFLAGS, &ifr) < 0)
-		exit_errno("SIOCGIFFLAGS ioctl failed");
-
-	if (set)
-		ifr.ifr_flags |= IFF_LINK0;
-	else
-		ifr.ifr_flags &= ~IFF_LINK0;
-
-	if (ioctl(ctl_sock, SIOCSIFFLAGS, &ifr) < 0)
-		exit_errno("SIOCSIFFLAGS ioctl failed");
-
-	if (close(ctl_sock))
-		pr_error_errno("close");
-}
-
-/** Sets up the TUN device */
-static void setup_tun(fastd_iface_t *iface) {
-	set_link0(iface, false);
-	set_tun_mtu(iface);
-}
-
-/** Sets up the TAP device */
-static void setup_tap(fastd_iface_t *iface) {
-	set_link0(iface, true);
-	set_tun_mtu(iface);
-}
-
-/** Opens the TUN/TAP device */
-static void tuntap_open(fastd_iface_t *iface) {
-	char ifname[5+IFNAMSIZ] = "/dev/";
-	if (!conf.ifname)
-		exit_error("config error: no interface name given.");
-	else if (strncmp(conf.ifname, "tun", 3) != 0)
-		exit_error("config error: `%s' doesn't seem to be a tun device", conf.ifname);
-	else
-		strncat(ifname, conf.ifname, IFNAMSIZ-1);
-
-	iface->fd = FASTD_POLL_FD(POLL_TYPE_IFACE, open(ifname, O_RDWR|O_NONBLOCK));
-	if (iface->fd.fd < 0)
-		exit_errno("could not open tun device file");
-
-	iface->name = fastd_strndup(conf.ifname, IFNAMSIZ-1);
-
-	switch (conf.mode) {
-	case MODE_TAP:
-		setup_tap(iface);
-		break;
-
-	case MODE_TUN:
-		setup_tun(iface);
-		break;
-
-	default:
-		exit_bug("invalid mode");
-	}
-}
-
-#endif
-
-#elif __APPLE__
-
-/** Opens the TUN/TAP device */
-static void tuntap_open(fastd_iface_t *iface) {
-	const char *devtype;
-	switch (conf.mode) {
-	case MODE_TAP:
-		devtype = "tap";
-		break;
-
-	case MODE_TUN:
-		devtype = "tun";
-		break;
-
-	default:
-		exit_bug("invalid mode");
-	}
-
-	char ifname[5+IFNAMSIZ] = "/dev/";
-	if (!conf.ifname)
-		exit_error("config error: no interface name given.");
-	else if (strncmp(conf.ifname, devtype, 3) != 0)
-		exit_error("config error: `%s' doesn't seem to be a %s device", conf.ifname, devtype);
-	else
-		strncat(ifname, conf.ifname, IFNAMSIZ-1);
-
-	iface->fd = FASTD_POLL_FD(POLL_TYPE_IFACE, open(ifname, O_RDWR|O_NONBLOCK));
-	if (iface->fd.fd < 0)
-		exit_errno("could not open tun device file");
-
-	iface->name = fastd_strndup(conf.ifname, IFNAMSIZ-1);
-
-	int ctl_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
-	if (ctl_sock < 0)
-		exit_errno("socket");
-
-	struct ifreq ifr = {};
-	strncpy(ifr.ifr_name, conf.ifname, IFNAMSIZ-1);
-	ifr.ifr_mtu = conf.mtu;
-	if (ioctl(ctl_sock, SIOCSIFMTU, &ifr) < 0)
-		exit_errno("SIOCSIFMTU ioctl failed");
-
-	if (close(ctl_sock))
-		pr_error_errno("close");
-}
-
-#else
-
-#error unknown tun/tap implementation
-
-#endif
-
-
-/** Reads a packet from the TUN/TAP device */
-void fastd_tuntap_handle(fastd_iface_t *iface) {
-	size_t max_len = fastd_max_payload();
-
-	fastd_buffer_t buffer;
-	if (multiaf_tun && conf.mode == MODE_TUN)
-		buffer = fastd_buffer_alloc(max_len+4, conf.min_encrypt_head_space+12, conf.min_encrypt_tail_space);
-	else
-		buffer = fastd_buffer_alloc(max_len, conf.min_encrypt_head_space, conf.min_encrypt_tail_space);
-
-	ssize_t len = read(iface->fd.fd, buffer.data, max_len);
-	if (len < 0)
-		exit_errno("read");
-
-	buffer.len = len;
-
-	if (multiaf_tun && conf.mode == MODE_TUN)
-		fastd_buffer_push_head(&buffer, 4);
-
-	fastd_send_data(buffer, iface->peer);
-}
-
-/** Writes a packet to the TUN/TAP device */
-void fastd_tuntap_write(fastd_iface_t *iface, fastd_buffer_t buffer) {
-	if (multiaf_tun && conf.mode == MODE_TUN) {
-		uint8_t version = *((uint8_t *)buffer.data) >> 4;
-		uint32_t af;
-
-		switch (version) {
-		case 4:
-			af = htonl(AF_INET);
-			break;
-
-		case 6:
-			af = htonl(AF_INET6);
-			break;
-
-		default:
-			pr_warn("fastd_tuntap_write: unknown IP version %u", version);
-			return;
-		}
-
-		fastd_buffer_pull_head(&buffer, 4);
-		memcpy(buffer.data, &af, 4);
-	}
-
-	if (write(iface->fd.fd, buffer.data, buffer.len) < 0)
-		pr_debug2_errno("write");
-}
-
-fastd_iface_t * fastd_tuntap_open(fastd_peer_t *peer) {
-	fastd_iface_t *iface = fastd_new(fastd_iface_t);
-	iface->peer = peer;
-
-	pr_debug("initializing tun/tap device...");
-	tuntap_open(iface);
-
-	if (iface->name)
-		pr_debug("tun/tap device `%s' initialized.", iface->name);
-	else
-		pr_debug("tun/tap device initialized.");
-
-	fastd_poll_fd_register(&iface->fd);
-
-	return iface;
-}
-
-/** Closes the TUN/TAP device */
-void fastd_tuntap_close(fastd_iface_t *iface) {
-	if (!fastd_poll_fd_close(&iface->fd))
-		pr_warn_errno("closing tun/tap: close");
-
-	free(iface->name);
-	free(iface);
-}