Import Upstream version 1.1~pre11
This commit is contained in:
Guus Sliepen
parent
60cff3039b
commit
1813f3157e
128 changed files with 10991 additions and 3132 deletions
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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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2001-2013 Guus Sliepen <guus@tinc-vpn.org>
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2001-2014 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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@ -35,7 +35,7 @@
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#endif
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#define DEFAULT_TUN_DEVICE "/dev/tun0"
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#if defined(HAVE_FREEBSD) || defined(HAVE_NETBSD)
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#if defined(HAVE_DARWIN) || defined(HAVE_FREEBSD) || defined(HAVE_NETBSD)
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#define DEFAULT_TAP_DEVICE "/dev/tap0"
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#else
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#define DEFAULT_TAP_DEVICE "/dev/tun0"
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@ -54,8 +54,6 @@ int device_fd = -1;
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char *device = NULL;
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char *iface = NULL;
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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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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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@ -65,18 +63,9 @@ static device_type_t device_type = DEVICE_TYPE_TUN;
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#endif
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static bool setup_device(void) {
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get_config_string(lookup_config(config_tree, "Device"), &device);
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char *type;
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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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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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@ -95,10 +84,29 @@ static bool setup_device(void) {
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return false;
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}
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} else {
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if(strstr(device, "tap") || routing_mode != RMODE_ROUTER)
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if((device && 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(!device) {
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if(device_type == DEVICE_TYPE_TAP)
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device = xstrdup(DEFAULT_TAP_DEVICE);
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else
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device = xstrdup(DEFAULT_TUN_DEVICE);
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}
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if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
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iface = NULL;
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#ifndef TAPGIFNAME
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if (iface) {
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logger(DEBUG_ALWAYS, LOG_WARNING, "Ignoring specified interface name '%s' as device rename is not supported on this platform", iface);
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free(iface);
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iface = NULL;
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}
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#endif
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if (!iface)
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iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : 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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@ -199,9 +207,11 @@ static void close_device(void) {
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default:
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close(device_fd);
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}
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device_fd = -1;
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free(device);
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free(iface);
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free(device); device = NULL;
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free(iface); iface = NULL;
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device_info = NULL;
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}
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static bool read_packet(vpn_packet_t *packet) {
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@ -212,10 +222,10 @@ static bool read_packet(vpn_packet_t *packet) {
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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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inlen = tunemu_read(device_fd, packet->data + 14, MTU - 14);
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inlen = tunemu_read(device_fd, DATA(packet) + 14, MTU - 14);
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else
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#endif
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inlen = read(device_fd, packet->data + 14, MTU - 14);
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inlen = read(device_fd, DATA(packet) + 14, MTU - 14);
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if(inlen <= 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info,
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@ -223,29 +233,29 @@ static bool read_packet(vpn_packet_t *packet) {
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return false;
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}
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switch(packet->data[14] >> 4) {
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switch(DATA(packet)[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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DATA(packet)[12] = 0x08;
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DATA(packet)[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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DATA(packet)[12] = 0x86;
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DATA(packet)[13] = 0xDD;
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break;
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default:
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logger(DEBUG_TRAFFIC, 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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DATA(packet)[14] >> 4, device_info, device);
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return false;
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}
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memset(packet->data, 0, 12);
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memset(DATA(packet), 0, 12);
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packet->len = inlen + 14;
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break;
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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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struct iovec vector[2] = {{&type, sizeof type}, {DATA(packet) + 14, MTU - 14}};
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if((inlen = readv(device_fd, vector, 2)) <= 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info,
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@ -255,13 +265,13 @@ static bool read_packet(vpn_packet_t *packet) {
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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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DATA(packet)[12] = 0x08;
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DATA(packet)[13] = 0x00;
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break;
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case AF_INET6:
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packet->data[12] = 0x86;
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packet->data[13] = 0xDD;
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DATA(packet)[12] = 0x86;
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DATA(packet)[13] = 0xDD;
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break;
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default:
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@ -271,13 +281,13 @@ static bool read_packet(vpn_packet_t *packet) {
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return false;
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}
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memset(packet->data, 0, 12);
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memset(DATA(packet), 0, 12);
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packet->len = inlen + 10;
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break;
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}
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case DEVICE_TYPE_TAP:
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if((inlen = read(device_fd, packet->data, MTU)) <= 0) {
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if((inlen = read(device_fd, DATA(packet), MTU)) <= 0) {
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logger(DEBUG_ALWAYS, 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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@ -290,8 +300,6 @@ static bool read_packet(vpn_packet_t *packet) {
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return false;
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}
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device_total_in += packet->len;
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logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s",
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packet->len, device_info);
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@ -304,7 +312,7 @@ static bool write_packet(vpn_packet_t *packet) {
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switch(device_type) {
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case DEVICE_TYPE_TUN:
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if(write(device_fd, packet->data + 14, packet->len - 14) < 0) {
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if(write(device_fd, DATA(packet) + 14, packet->len - 14) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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@ -313,10 +321,10 @@ static bool write_packet(vpn_packet_t *packet) {
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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, packet->len - 14}};
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struct iovec vector[2] = {{&type, sizeof type}, {DATA(packet) + 14, packet->len - 14}};
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int af;
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af = (packet->data[12] << 8) + packet->data[13];
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af = (DATA(packet)[12] << 8) + DATA(packet)[13];
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switch (af) {
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case 0x0800:
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@ -341,7 +349,7 @@ static bool write_packet(vpn_packet_t *packet) {
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}
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case DEVICE_TYPE_TAP:
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if(write(device_fd, packet->data, packet->len) < 0) {
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if(write(device_fd, DATA(packet), packet->len) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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@ -350,7 +358,7 @@ static bool write_packet(vpn_packet_t *packet) {
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#ifdef ENABLE_TUNEMU
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case DEVICE_TYPE_TUNEMU:
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if(tunemu_write(device_fd, packet->data + 14, packet->len - 14) < 0) {
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if(tunemu_write(device_fd, DATA(packet) + 14, packet->len - 14) < 0) {
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logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info,
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device, strerror(errno));
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return false;
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@ -362,21 +370,12 @@ static bool write_packet(vpn_packet_t *packet) {
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return false;
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}
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device_total_out += packet->len;
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return true;
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}
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static void dump_device_stats(void) {
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logger(DEBUG_ALWAYS, LOG_DEBUG, "Statistics for %s %s:", device_info, device);
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logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
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logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
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}
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const devops_t os_devops = {
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.setup = setup_device,
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.close = close_device,
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.read = read_packet,
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.write = write_packet,
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.dump_stats = dump_device_stats,
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};
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