X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fbsd%2Fdevice.c;h=183f57cafed24bddf3a0d6136946417e42a5540f;hp=ee9b0e53993c1690273c90fd240aa898497e7cc8;hb=4a5c12ec97fa1e82aae2d327fdc648e5203eb478;hpb=46e481dc945c5572eb6091a3660f6bf258ee0cfa diff --git a/src/bsd/device.c b/src/bsd/device.c index ee9b0e53..183f57ca 100644 --- a/src/bsd/device.c +++ b/src/bsd/device.c @@ -1,7 +1,7 @@ /* device.c -- Interaction BSD tun/tap device Copyright (C) 2001-2005 Ivo Timmermans, - 2001-2009 Guus Sliepen + 2001-2016 Guus Sliepen 2009 Grzegorz Dymarek This program is free software; you can redistribute it and/or modify @@ -19,26 +19,32 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#include "system.h" +#include "../system.h" -#include "conf.h" -#include "logger.h" -#include "net.h" -#include "route.h" -#include "utils.h" -#include "xalloc.h" +#include "../conf.h" +#include "../device.h" +#include "../logger.h" +#include "../net.h" +#include "../route.h" +#include "../utils.h" +#include "../xalloc.h" -#ifdef HAVE_TUNEMU -#include "bsd/tunemu.h" +#ifdef ENABLE_TUNEMU +#include "tunemu.h" #endif -#define DEFAULT_DEVICE "/dev/tun0" +#define DEFAULT_TUN_DEVICE "/dev/tun0" +#if defined(HAVE_FREEBSD) || defined(HAVE_NETBSD) || defined(HAVE_DARWIN) +#define DEFAULT_TAP_DEVICE "/dev/tap0" +#else +#define DEFAULT_TAP_DEVICE "/dev/tun0" +#endif typedef enum device_type { DEVICE_TYPE_TUN, DEVICE_TYPE_TUNIFHEAD, DEVICE_TYPE_TAP, -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU DEVICE_TYPE_TUNEMU, #endif } device_type_t; @@ -47,29 +53,35 @@ int device_fd = -1; char *device = NULL; char *iface = NULL; static char *device_info = NULL; -static int device_total_in = 0; -static int device_total_out = 0; -#if defined(TUNEMU) +static uint64_t device_total_in = 0; +static uint64_t device_total_out = 0; +#if defined(ENABLE_TUNEMU) static device_type_t device_type = DEVICE_TYPE_TUNEMU; -#elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD) +#elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD) || defined(HAVE_DRAGONFLY) static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD; #else static device_type_t device_type = DEVICE_TYPE_TUN; #endif -bool setup_device(void) { +static bool setup_device(void) { char *type; - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) - device = xstrdup(DEFAULT_DEVICE); + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { + if(routing_mode == RMODE_ROUTER) + device = xstrdup(DEFAULT_TUN_DEVICE); + else + device = xstrdup(DEFAULT_TAP_DEVICE); + } if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) - iface = xstrdup(rindex(device, '/') ? rindex(device, '/') + 1 : device); + iface = xstrdup(strrchr(device, '/') ? strrchr(device, '/') + 1 : device); + else if(strcmp(iface, strrchr(device, '/') ? strrchr(device, '/') + 1 : device)) + logger(LOG_WARNING, "Warning: Interface does not match Device. $INTERFACE might be set incorrectly."); if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { if(!strcasecmp(type, "tun")) /* use default */; -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU else if(!strcasecmp(type, "tunemu")) device_type = DEVICE_TYPE_TUNEMU; #endif @@ -89,7 +101,7 @@ bool setup_device(void) { } switch(device_type) { -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU case DEVICE_TYPE_TUNEMU: { char dynamic_name[256] = ""; device_fd = tunemu_open(dynamic_name); @@ -105,6 +117,10 @@ bool setup_device(void) { return false; } +#ifdef FD_CLOEXEC + fcntl(device_fd, F_SETFD, FD_CLOEXEC); +#endif + switch(device_type) { default: device_type = DEVICE_TYPE_TUN; @@ -150,8 +166,19 @@ bool setup_device(void) { if(routing_mode == RMODE_ROUTER) overwrite_mac = true; device_info = "Generic BSD tap device"; +#ifdef TAPGIFNAME + { + struct ifreq ifr; + if(ioctl(device_fd, TAPGIFNAME, (void*)&ifr) == 0) { + if(iface) + free(iface); + iface = xstrdup(ifr.ifr_name); + } + } + +#endif break; -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU case DEVICE_TYPE_TUNEMU: device_info = "BSD tunemu device"; break; @@ -163,9 +190,9 @@ bool setup_device(void) { return true; } -void close_device(void) { +static void close_device(void) { switch(device_type) { -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU case DEVICE_TYPE_TUNEMU: tunemu_close(device_fd); break; @@ -178,19 +205,18 @@ void close_device(void) { free(iface); } -bool read_packet(vpn_packet_t *packet) { +static bool read_packet(vpn_packet_t *packet) { int lenin; switch(device_type) { case DEVICE_TYPE_TUN: -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU case DEVICE_TYPE_TUNEMU: if(device_type == DEVICE_TYPE_TUNEMU) lenin = tunemu_read(device_fd, packet->data + 14, MTU - 14); else -#else - lenin = read(device_fd, packet->data + 14, MTU - 14); #endif + lenin = read(device_fd, packet->data + 14, MTU - 14); if(lenin <= 0) { logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, @@ -209,11 +235,12 @@ bool read_packet(vpn_packet_t *packet) { break; default: ifdebug(TRAFFIC) logger(LOG_ERR, - _ ("Unknown IP version %d while reading packet from %s %s"), + "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; @@ -240,11 +267,12 @@ bool read_packet(vpn_packet_t *packet) { default: ifdebug(TRAFFIC) logger(LOG_ERR, - _ ("Unknown address family %x while reading packet from %s %s"), + "Unknown address family %x while reading packet from %s %s", ntohl(type), device_info, device); return false; } + memset(packet->data, 0, 12); packet->len = lenin + 10; break; } @@ -268,11 +296,10 @@ bool read_packet(vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, device_info); - logger(LOG_INFO, "E:fd_read"); return true; } -bool write_packet(vpn_packet_t *packet) { +static bool write_packet(vpn_packet_t *packet) { ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", packet->len, device_info); @@ -322,7 +349,7 @@ bool write_packet(vpn_packet_t *packet) { } break; -#ifdef HAVE_TUNEMU +#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, @@ -341,8 +368,16 @@ bool write_packet(vpn_packet_t *packet) { return true; } -void dump_device_stats(void) { +static void dump_device_stats(void) { logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device); - logger(LOG_DEBUG, " total bytes in: %10d", device_total_in); - logger(LOG_DEBUG, " total bytes out: %10d", device_total_out); + 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, +};