Import Upstream version 1.1~pre2
This commit is contained in:
Guus Sliepen
parent
a04a7bcd67
commit
02de1cd2f1
172 changed files with 32291 additions and 25994 deletions
578
src/bsd/device.c
578
src/bsd/device.c
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@ -1,7 +1,7 @@
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/*
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device.c -- Interaction BSD tun/tap device
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Copyright (C) 2001-2005 Ivo Timmermans,
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2001-2016 Guus Sliepen <guus@tinc-vpn.org>
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2001-2011 Guus Sliepen <guus@tinc-vpn.org>
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2009 Grzegorz Dymarek <gregd72002@googlemail.com>
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This program is free software; you can redistribute it and/or modify
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@ -19,46 +19,38 @@
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "../system.h"
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#include "system.h"
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#include "../conf.h"
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#include "../device.h"
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#include "../logger.h"
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#include "../net.h"
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#include "../route.h"
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#include "../utils.h"
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#include "../xalloc.h"
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#include "conf.h"
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#include "device.h"
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#include "logger.h"
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#include "net.h"
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#include "route.h"
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#include "utils.h"
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#include "xalloc.h"
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#ifdef ENABLE_TUNEMU
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#include "tunemu.h"
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#ifdef HAVE_TUNEMU
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#include "bsd/tunemu.h"
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#endif
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#ifdef HAVE_NET_IF_UTUN_H
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#include <sys/sys_domain.h>
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#include <sys/kern_control.h>
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#include <net/if_utun.h>
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#endif
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#define DEFAULT_TUN_DEVICE "/dev/tun0"
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#define DEFAULT_TAP_DEVICE "/dev/tap0"
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#define DEFAULT_DEVICE "/dev/tun0"
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typedef enum device_type {
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DEVICE_TYPE_TUN,
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DEVICE_TYPE_TUNIFHEAD,
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DEVICE_TYPE_TAP,
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#ifdef ENABLE_TUNEMU
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#ifdef HAVE_TUNEMU
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DEVICE_TYPE_TUNEMU,
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#endif
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DEVICE_TYPE_UTUN,
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} device_type_t;
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int device_fd = -1;
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char *device = NULL;
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char *iface = NULL;
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static const char *device_info = "OS X utun device";
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static char *device_info = NULL;
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static uint64_t device_total_in = 0;
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static uint64_t device_total_out = 0;
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#if defined(ENABLE_TUNEMU)
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#if defined(TUNEMU)
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static device_type_t device_type = DEVICE_TYPE_TUNEMU;
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#elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD) || defined(HAVE_DRAGONFLY)
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static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD;
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@ -66,140 +58,47 @@ static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD;
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static device_type_t device_type = DEVICE_TYPE_TUN;
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#endif
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#ifdef HAVE_NET_IF_UTUN_H
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static bool setup_utun(void) {
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device_fd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL);
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if(device_fd == -1) {
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logger(LOG_ERR, "Could not open PF_SYSTEM socket: %s\n", strerror(errno));
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return false;
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}
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struct ctl_info info = {};
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strlcpy(info.ctl_name, UTUN_CONTROL_NAME, sizeof(info.ctl_name));
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if(ioctl(device_fd, CTLIOCGINFO, &info) == -1) {
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logger(LOG_ERR, "ioctl(CTLIOCGINFO) failed: %s", strerror(errno));
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return false;
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}
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int unit = -1;
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char *p = strstr(device, "utun"), *e = NULL;
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if(p) {
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unit = strtol(p + 4, &e, 10);
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if(!e) {
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unit = -1;
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}
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}
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struct sockaddr_ctl sc = {
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.sc_id = info.ctl_id,
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.sc_len = sizeof(sc),
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.sc_family = AF_SYSTEM,
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.ss_sysaddr = AF_SYS_CONTROL,
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.sc_unit = unit + 1,
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};
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if(connect(device_fd, (struct sockaddr *)&sc, sizeof(sc)) == -1) {
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logger(LOG_ERR, "Could not connect utun socket: %s\n", strerror(errno));
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return false;
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}
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char name[64] = "";
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socklen_t len = sizeof(name);
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if(getsockopt(device_fd, SYSPROTO_CONTROL, UTUN_OPT_IFNAME, name, &len)) {
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iface = xstrdup(device);
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} else {
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iface = xstrdup(name);
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}
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logger(LOG_INFO, "%s is a %s", device, device_info);
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return true;
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}
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#endif
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static bool setup_device(void) {
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// Find out which device file to open
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if(!get_config_string(lookup_config(config_tree, "Device"), &device)) {
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if(routing_mode == RMODE_ROUTER) {
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device = xstrdup(DEFAULT_TUN_DEVICE);
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} else {
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device = xstrdup(DEFAULT_TAP_DEVICE);
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}
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}
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// Find out if it's supposed to be a tun or a tap device
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bool setup_device(void) {
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char *type;
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if(!get_config_string(lookup_config(config_tree, "Device"), &device))
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device = xstrdup(DEFAULT_DEVICE);
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if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
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iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device);
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if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
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if(!strcasecmp(type, "tun"))
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/* use default */;
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#ifdef ENABLE_TUNEMU
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else if(!strcasecmp(type, "tunemu")) {
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/* use default */;
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#ifdef HAVE_TUNEMU
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else if(!strcasecmp(type, "tunemu"))
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device_type = DEVICE_TYPE_TUNEMU;
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}
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#endif
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#ifdef HAVE_NET_IF_UTUN_H
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else if(!strcasecmp(type, "utun")) {
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device_type = DEVICE_TYPE_UTUN;
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}
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#endif
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else if(!strcasecmp(type, "tunnohead")) {
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else if(!strcasecmp(type, "tunnohead"))
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device_type = DEVICE_TYPE_TUN;
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} else if(!strcasecmp(type, "tunifhead")) {
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else if(!strcasecmp(type, "tunifhead"))
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device_type = DEVICE_TYPE_TUNIFHEAD;
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} else if(!strcasecmp(type, "tap")) {
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else if(!strcasecmp(type, "tap"))
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device_type = DEVICE_TYPE_TAP;
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} else {
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else {
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logger(LOG_ERR, "Unknown device type %s!", type);
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return false;
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}
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} else {
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#ifdef HAVE_NET_IF_UTUN_H
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if(strncmp(device, "utun", 4) == 0 || strncmp(device, "/dev/utun", 9) == 0) {
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device_type = DEVICE_TYPE_UTUN;
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} else
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#endif
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if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) {
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device_type = DEVICE_TYPE_TAP;
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}
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if(strstr(device, "tap") || routing_mode != RMODE_ROUTER)
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device_type = DEVICE_TYPE_TAP;
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}
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if(routing_mode == RMODE_SWITCH && device_type != DEVICE_TYPE_TAP) {
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logger(LOG_ERR, "Only tap devices support switch mode!");
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return false;
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}
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// Open the device
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switch(device_type) {
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#ifdef ENABLE_TUNEMU
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case DEVICE_TYPE_TUNEMU: {
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char dynamic_name[256] = "";
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device_fd = tunemu_open(dynamic_name);
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}
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break;
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#ifdef HAVE_TUNEMU
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case DEVICE_TYPE_TUNEMU: {
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char dynamic_name[256] = "";
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device_fd = tunemu_open(dynamic_name);
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}
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break;
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#endif
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#ifdef HAVE_NET_IF_UTUN_H
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case DEVICE_TYPE_UTUN:
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return setup_utun();
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#endif
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default:
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device_fd = open(device, O_RDWR | O_NONBLOCK);
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default:
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device_fd = open(device, O_RDWR | O_NONBLOCK);
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}
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if(device_fd < 0) {
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@ -207,307 +106,244 @@ static bool setup_device(void) {
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return false;
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}
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#ifdef FD_CLOEXEC
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fcntl(device_fd, F_SETFD, FD_CLOEXEC);
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#endif
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// Guess what the corresponding interface is called
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char *realname = NULL;
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#if defined(HAVE_FDEVNAME)
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realname = fdevname(device_fd);
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#elif defined(HAVE_DEVNAME)
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struct stat buf;
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if(!fstat(device_fd, &buf)) {
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realname = devname(buf.st_rdev, S_IFCHR);
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}
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#endif
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if(!realname) {
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realname = device;
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}
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if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) {
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iface = xstrdup(strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname);
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} else if(strcmp(iface, strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname)) {
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logger(LOG_WARNING, "Warning: Interface does not match Device. $INTERFACE might be set incorrectly.");
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}
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// Configure the device as best as we can
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switch(device_type) {
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default:
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device_type = DEVICE_TYPE_TUN;
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case DEVICE_TYPE_TUN:
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default:
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device_type = DEVICE_TYPE_TUN;
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case DEVICE_TYPE_TUN:
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#ifdef TUNSIFHEAD
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{
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{
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const int zero = 0;
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if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof(zero)) == -1) {
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if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) {
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logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno));
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return false;
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}
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}
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#endif
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#if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST)
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{
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const int mode = IFF_BROADCAST | IFF_MULTICAST;
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ioctl(device_fd, TUNSIFMODE, &mode, sizeof(mode));
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ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode);
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}
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#endif
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device_info = "Generic BSD tun device";
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break;
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case DEVICE_TYPE_TUNIFHEAD:
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device_info = "Generic BSD tun device";
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break;
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case DEVICE_TYPE_TUNIFHEAD:
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#ifdef TUNSIFHEAD
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{
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const int one = 1;
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if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof(one)) == -1) {
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if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof one) == -1) {
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logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno));
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return false;
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}
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}
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#endif
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#if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST)
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{
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const int mode = IFF_BROADCAST | IFF_MULTICAST;
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ioctl(device_fd, TUNSIFMODE, &mode, sizeof(mode));
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const int mode = IFF_BROADCAST | IFF_MULTICAST;
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ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode);
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}
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#endif
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device_info = "Generic BSD tun device";
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break;
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case DEVICE_TYPE_TAP:
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if(routing_mode == RMODE_ROUTER) {
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overwrite_mac = true;
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}
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device_info = "Generic BSD tap device";
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device_info = "Generic BSD tun device";
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break;
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case DEVICE_TYPE_TAP:
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if(routing_mode == RMODE_ROUTER)
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overwrite_mac = true;
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device_info = "Generic BSD tap device";
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#ifdef TAPGIFNAME
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{
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struct ifreq ifr;
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if(ioctl(device_fd, TAPGIFNAME, (void *)&ifr) == 0) {
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if(iface) {
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free(iface);
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{
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struct ifreq ifr;
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if(ioctl(device_fd, TAPGIFNAME, (void*)&ifr) == 0) {
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if(iface)
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free(iface);
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iface = xstrdup(ifr.ifr_name);
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}
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iface = xstrdup(ifr.ifr_name);
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}
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}
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#endif
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break;
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#ifdef ENABLE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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device_info = "BSD tunemu device";
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break;
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break;
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#ifdef HAVE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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device_info = "BSD tunemu device";
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break;
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#endif
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}
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#ifdef SIOCGIFADDR
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if(overwrite_mac) {
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ioctl(device_fd, SIOCGIFADDR, mymac.x);
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}
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#endif
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logger(LOG_INFO, "%s is a %s", device, device_info);
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return true;
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}
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static void close_device(void) {
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void close_device(void) {
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switch(device_type) {
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#ifdef ENABLE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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tunemu_close(device_fd);
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break;
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#ifdef HAVE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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tunemu_close(device_fd);
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break;
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#endif
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default:
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close(device_fd);
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default:
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close(device_fd);
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}
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free(device);
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free(iface);
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}
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static bool read_packet(vpn_packet_t *packet) {
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int lenin;
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bool read_packet(vpn_packet_t *packet) {
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int inlen;
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switch(device_type) {
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case DEVICE_TYPE_TUN:
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#ifdef ENABLE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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if(device_type == DEVICE_TYPE_TUNEMU) {
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lenin = tunemu_read(device_fd, packet->data + 14, MTU - 14);
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} else
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case DEVICE_TYPE_TUN:
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#ifdef HAVE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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if(device_type == DEVICE_TYPE_TUNEMU)
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inlen = tunemu_read(device_fd, packet->data + 14, MTU - 14);
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else
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#endif
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lenin = read(device_fd, packet->data + 14, MTU - 14);
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inlen = read(device_fd, packet->data + 14, MTU - 14);
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if(lenin <= 0) {
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logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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}
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if(inlen <= 0) {
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logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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}
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switch(packet->data[14] >> 4) {
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case 4:
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packet->data[12] = 0x08;
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packet->data[13] = 0x00;
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switch(packet->data[14] >> 4) {
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case 4:
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packet->data[12] = 0x08;
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packet->data[13] = 0x00;
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break;
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case 6:
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packet->data[12] = 0x86;
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packet->data[13] = 0xDD;
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break;
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default:
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ifdebug(TRAFFIC) logger(LOG_ERR,
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"Unknown IP version %d while reading packet from %s %s",
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packet->data[14] >> 4, device_info, device);
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return false;
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}
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packet->len = inlen + 14;
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break;
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case 6:
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packet->data[12] = 0x86;
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packet->data[13] = 0xDD;
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case DEVICE_TYPE_TUNIFHEAD: {
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u_int32_t type;
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struct iovec vector[2] = {{&type, sizeof type}, {packet->data + 14, MTU - 14}};
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if((inlen = readv(device_fd, vector, 2)) <= 0) {
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logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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}
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switch (ntohl(type)) {
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case AF_INET:
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packet->data[12] = 0x08;
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packet->data[13] = 0x00;
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||||
break;
|
||||
|
||||
case AF_INET6:
|
||||
packet->data[12] = 0x86;
|
||||
packet->data[13] = 0xDD;
|
||||
break;
|
||||
|
||||
default:
|
||||
ifdebug(TRAFFIC) logger(LOG_ERR,
|
||||
"Unknown address family %x while reading packet from %s %s",
|
||||
ntohl(type), device_info, device);
|
||||
return false;
|
||||
}
|
||||
|
||||
packet->len = inlen + 10;
|
||||
break;
|
||||
}
|
||||
|
||||
case DEVICE_TYPE_TAP:
|
||||
if((inlen = read(device_fd, packet->data, MTU)) <= 0) {
|
||||
logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
packet->len = inlen;
|
||||
break;
|
||||
|
||||
default:
|
||||
ifdebug(TRAFFIC) logger(LOG_ERR,
|
||||
"Unknown IP version %d while reading packet from %s %s",
|
||||
packet->data[14] >> 4, device_info, device);
|
||||
return false;
|
||||
}
|
||||
|
||||
memset(packet->data, 0, 12);
|
||||
packet->len = lenin + 14;
|
||||
break;
|
||||
|
||||
case DEVICE_TYPE_UTUN:
|
||||
case DEVICE_TYPE_TUNIFHEAD: {
|
||||
if((lenin = read(device_fd, packet->data + 10, MTU - 10)) <= 0) {
|
||||
logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
switch(packet->data[14] >> 4) {
|
||||
case 4:
|
||||
packet->data[12] = 0x08;
|
||||
packet->data[13] = 0x00;
|
||||
break;
|
||||
|
||||
case 6:
|
||||
packet->data[12] = 0x86;
|
||||
packet->data[13] = 0xDD;
|
||||
break;
|
||||
|
||||
default:
|
||||
ifdebug(TRAFFIC) logger(LOG_ERR,
|
||||
"Unknown IP version %d while reading packet from %s %s",
|
||||
packet->data[14] >> 4, device_info, device);
|
||||
return false;
|
||||
}
|
||||
|
||||
memset(packet->data, 0, 12);
|
||||
packet->len = lenin + 10;
|
||||
break;
|
||||
}
|
||||
|
||||
case DEVICE_TYPE_TAP:
|
||||
if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
|
||||
logger(LOG_ERR, "Error while reading from %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
packet->len = lenin;
|
||||
break;
|
||||
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
device_total_in += packet->len;
|
||||
|
||||
ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s",
|
||||
packet->len, device_info);
|
||||
packet->len, device_info);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool write_packet(vpn_packet_t *packet) {
|
||||
bool write_packet(vpn_packet_t *packet) {
|
||||
ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s",
|
||||
packet->len, device_info);
|
||||
packet->len, device_info);
|
||||
|
||||
switch(device_type) {
|
||||
case DEVICE_TYPE_TUN:
|
||||
if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
|
||||
logger(LOG_ERR, "Error while writing to %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
case DEVICE_TYPE_UTUN:
|
||||
case DEVICE_TYPE_TUNIFHEAD: {
|
||||
int af = (packet->data[12] << 8) + packet->data[13];
|
||||
uint32_t type;
|
||||
|
||||
switch(af) {
|
||||
case 0x0800:
|
||||
type = htonl(AF_INET);
|
||||
case DEVICE_TYPE_TUN:
|
||||
if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
|
||||
logger(LOG_ERR, "Error while writing to %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
|
||||
case 0x86DD:
|
||||
type = htonl(AF_INET6);
|
||||
case DEVICE_TYPE_TUNIFHEAD: {
|
||||
u_int32_t type;
|
||||
struct iovec vector[2] = {{&type, sizeof type}, {packet->data + 14, packet->len - 14}};
|
||||
int af;
|
||||
|
||||
af = (packet->data[12] << 8) + packet->data[13];
|
||||
|
||||
switch (af) {
|
||||
case 0x0800:
|
||||
type = htonl(AF_INET);
|
||||
break;
|
||||
case 0x86DD:
|
||||
type = htonl(AF_INET6);
|
||||
break;
|
||||
default:
|
||||
ifdebug(TRAFFIC) logger(LOG_ERR,
|
||||
"Unknown address family %x while writing packet to %s %s",
|
||||
af, device_info, device);
|
||||
return false;
|
||||
}
|
||||
|
||||
if(writev(device_fd, vector, 2) < 0) {
|
||||
logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device,
|
||||
strerror(errno));
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case DEVICE_TYPE_TAP:
|
||||
if(write(device_fd, packet->data, packet->len) < 0) {
|
||||
logger(LOG_ERR, "Error while writing to %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
ifdebug(TRAFFIC) logger(LOG_ERR,
|
||||
"Unknown address family %x while writing packet to %s %s",
|
||||
af, device_info, device);
|
||||
return false;
|
||||
}
|
||||
|
||||
memcpy(packet->data + 10, &type, sizeof(type));
|
||||
|
||||
if(write(device_fd, packet->data + 10, packet->len - 10) < 0) {
|
||||
logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device,
|
||||
strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case DEVICE_TYPE_TAP:
|
||||
if(write(device_fd, packet->data, packet->len) < 0) {
|
||||
logger(LOG_ERR, "Error while writing to %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
#ifdef ENABLE_TUNEMU
|
||||
|
||||
case DEVICE_TYPE_TUNEMU:
|
||||
if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) {
|
||||
logger(LOG_ERR, "Error while writing to %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
|
||||
break;
|
||||
#ifdef HAVE_TUNEMU
|
||||
case DEVICE_TYPE_TUNEMU:
|
||||
if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) {
|
||||
logger(LOG_ERR, "Error while writing to %s %s: %s", device_info,
|
||||
device, strerror(errno));
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
#endif
|
||||
|
||||
default:
|
||||
return false;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
|
||||
device_total_out += packet->len;
|
||||
|
|
@ -515,16 +351,8 @@ static bool write_packet(vpn_packet_t *packet) {
|
|||
return true;
|
||||
}
|
||||
|
||||
static void dump_device_stats(void) {
|
||||
void dump_device_stats(void) {
|
||||
logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device);
|
||||
logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
|
||||
logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
|
||||
}
|
||||
|
||||
const devops_t os_devops = {
|
||||
.setup = setup_device,
|
||||
.close = close_device,
|
||||
.read = read_packet,
|
||||
.write = write_packet,
|
||||
.dump_stats = dump_device_stats,
|
||||
};
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue