X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fbsd%2Fdevice.c;h=e083519df21c4aa2b6c49b84e3ebec3ab2516b89;hp=d6ef0e8259f6141999e66226b121696da2d2d6fc;hb=e70b5b5bd77bb66e8dd324c17d86d9bff151aa82;hpb=67766d65f06854ee894d784f638c5c9cd2b50bca diff --git a/src/bsd/device.c b/src/bsd/device.c index d6ef0e82..e083519d 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, - 2001-2011 Guus Sliepen + 2001-2013 Guus Sliepen 2009 Grzegorz Dymarek This program is free software; you can redistribute it and/or modify @@ -19,26 +19,33 @@ 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 "../names.h" +#include "../net.h" +#include "../route.h" +#include "../utils.h" +#include "../xalloc.h" -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU #include "bsd/tunemu.h" #endif -#define DEFAULT_DEVICE "/dev/tun0" +#define DEFAULT_TUN_DEVICE "/dev/tun0" +#if defined(HAVE_FREEBSD) || defined(HAVE_NETBSD) +#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; @@ -49,7 +56,7 @@ char *iface = NULL; static char *device_info = NULL; static uint64_t device_total_in = 0; static uint64_t device_total_out = 0; -#if defined(TUNEMU) +#if defined(ENABLE_TUNEMU) static device_type_t device_type = DEVICE_TYPE_TUNEMU; #elif defined(HAVE_OPENBSD) || defined(HAVE_FREEBSD) || defined(HAVE_DRAGONFLY) static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD; @@ -57,19 +64,23 @@ static device_type_t device_type = DEVICE_TYPE_TUNIFHEAD; 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(strrchr(device, '/') ? strrchr(device, '/') + 1 : device); if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { if(!strcasecmp(type, "tun")) - /* use default */; -#ifdef HAVE_TUNEMU + /* use default */; +#ifdef ENABLE_TUNEMU else if(!strcasecmp(type, "tunemu")) device_type = DEVICE_TYPE_TUNEMU; #endif @@ -80,7 +91,7 @@ bool setup_device(void) { else if(!strcasecmp(type, "tap")) device_type = DEVICE_TYPE_TAP; else { - logger(LOG_ERR, "Unknown device type %s!", type); + logger(DEBUG_ALWAYS, LOG_ERR, "Unknown device type %s!", type); return false; } } else { @@ -89,10 +100,10 @@ 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); + device_fd = tunemu_open(dynamic_name); } break; #endif @@ -101,19 +112,23 @@ bool setup_device(void) { } if(device_fd < 0) { - logger(LOG_ERR, "Could not open %s: %s", device, strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", device, strerror(errno)); return false; } +#ifdef FD_CLOEXEC + fcntl(device_fd, F_SETFD, FD_CLOEXEC); +#endif + switch(device_type) { default: device_type = DEVICE_TYPE_TUN; case DEVICE_TYPE_TUN: #ifdef TUNSIFHEAD - { + { const int zero = 0; if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) { - logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); return false; } } @@ -132,7 +147,7 @@ bool setup_device(void) { { const int one = 1; if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof one) == -1) { - logger(LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); + logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "ioctl", strerror(errno)); return false; } } @@ -159,24 +174,24 @@ bool setup_device(void) { iface = xstrdup(ifr.ifr_name); } } - + #endif break; -#ifdef HAVE_TUNEMU +#ifdef ENABLE_TUNEMU case DEVICE_TYPE_TUNEMU: - device_info = "BSD tunemu device"; + device_info = "BSD tunemu device"; break; #endif } - logger(LOG_INFO, "%s is a %s", device, device_info); + logger(DEBUG_ALWAYS, LOG_INFO, "%s is a %s", device, device_info); 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; @@ -189,21 +204,21 @@ void close_device(void) { free(iface); } -bool read_packet(vpn_packet_t *packet) { - int lenin; +static bool read_packet(vpn_packet_t *packet) { + int inlen; 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); + inlen = tunemu_read(device_fd, packet->data + 14, MTU - 14); else #endif - lenin = read(device_fd, packet->data + 14, MTU - 14); + inlen = read(device_fd, packet->data + 14, MTU - 14); - if(lenin <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + if(inlen <= 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -218,21 +233,22 @@ bool read_packet(vpn_packet_t *packet) { packet->data[13] = 0xDD; break; default: - ifdebug(TRAFFIC) logger(LOG_ERR, + logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown IP version %d while reading packet from %s %s", packet->data[14] >> 4, device_info, device); return false; } - packet->len = lenin + 14; + memset(packet->data, 0, 12); + packet->len = inlen + 14; break; case DEVICE_TYPE_TUNIFHEAD: { u_int32_t type; - struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}}; + struct iovec vector[2] = {{&type, sizeof type}, {packet->data + 14, MTU - 14}}; - if((lenin = readv(device_fd, vector, 2)) <= 0) { - logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, + if((inlen = readv(device_fd, vector, 2)) <= 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -249,46 +265,47 @@ bool read_packet(vpn_packet_t *packet) { break; default: - ifdebug(TRAFFIC) logger(LOG_ERR, + logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown address family %x while reading packet from %s %s", ntohl(type), device_info, device); return false; } - packet->len = lenin + 10; + memset(packet->data, 0, 12); + packet->len = inlen + 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, + if((inlen = read(device_fd, packet->data, MTU)) <= 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); return false; } - packet->len = lenin; + packet->len = inlen; break; default: return false; } - + device_total_in += packet->len; - ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", + logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, device_info); return true; } -bool write_packet(vpn_packet_t *packet) { - ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s", +static bool write_packet(vpn_packet_t *packet) { + logger(DEBUG_TRAFFIC, LOG_DEBUG, "Writing packet of %d bytes to %s", 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, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -296,9 +313,9 @@ bool write_packet(vpn_packet_t *packet) { case DEVICE_TYPE_TUNIFHEAD: { u_int32_t type; - struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, packet->len - 14}}; + 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) { @@ -309,32 +326,32 @@ bool write_packet(vpn_packet_t *packet) { type = htonl(AF_INET6); break; default: - ifdebug(TRAFFIC) logger(LOG_ERR, + logger(DEBUG_TRAFFIC, 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, + logger(DEBUG_ALWAYS, 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, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info, device, strerror(errno)); return false; } 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, + logger(DEBUG_ALWAYS, LOG_ERR, "Error while writing to %s %s: %s", device_info, device, strerror(errno)); return false; } @@ -350,8 +367,16 @@ bool write_packet(vpn_packet_t *packet) { return true; } -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); +static void dump_device_stats(void) { + logger(DEBUG_ALWAYS, LOG_DEBUG, "Statistics for %s %s:", device_info, device); + logger(DEBUG_ALWAYS, LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in); + logger(DEBUG_ALWAYS, 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, +};