X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fraw_socket%2Fdevice.c;h=f2a135d3de57bea591b83d94447660d0db6a5caf;hp=054afeef5cda21848b4687a4fedb6a38e2b13bc8;hb=78fc59e994c764d072bf0045177f690a378d1308;hpb=18948c5784bfedf0dd5a371e41bc2cceee76d92e diff --git a/src/raw_socket/device.c b/src/raw_socket/device.c index 054afeef..f2a135d3 100644 --- a/src/raw_socket/device.c +++ b/src/raw_socket/device.c @@ -1,7 +1,7 @@ /* device.c -- raw socket - Copyright (C) 2002 Ivo Timmermans , - 2002 Guus Sliepen + Copyright (C) 2002-2005 Ivo Timmermans, + 2002-2009 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,158 +17,129 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: device.c,v 1.1.2.1 2002/07/18 14:30:45 guus Exp $ + $Id$ */ -#include "config.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include "system.h" + #include -#include -#include #include "conf.h" #include "net.h" -#include "subnet.h" - -#include "system.h" +#include "logger.h" +#include "utils.h" +#include "route.h" +#include "xalloc.h" int device_fd = -1; -int device_type; -char *device; -char *interface; -char ifrname[IFNAMSIZ]; -char *device_info; +char *device = NULL; +char *iface = NULL; +static char ifrname[IFNAMSIZ]; +static char *device_info; -int device_total_in = 0; -int device_total_out = 0; +static int device_total_in = 0; +static int device_total_out = 0; -extern subnet_t mymac; - -/* - open the local ethertap device -*/ -int setup_device(void) +bool setup_device(void) { - struct ifreq ifr; - struct sockaddr_ll sa; -cp - if(!get_config_string(lookup_config(config_tree, "Interface"), &interface)) - interface = "eth0"; - - if(!get_config_string(lookup_config(config_tree, "Device"), &device)) - device = interface; - - device_info = _("raw socket"); -cp - if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) - { - syslog(LOG_ERR, _("Could not open %s: %s"), device_info, strerror(errno)); - return -1; - } - - memset(&ifr, 0, sizeof(ifr)); - strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ); - if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) - { - close(device_fd); - syslog(LOG_ERR, _("Can't find interface %s: %s"), interface, strerror(errno)); - return -1; - } - - memset(&sa, '0', sizeof(sa)); - sa.sll_family = AF_PACKET; - sa.sll_protocol = htons(ETH_P_ALL); - sa.sll_ifindex = ifr.ifr_ifindex; - - if(bind(device_fd, (struct sockaddr *)&sa, (socklen_t)sizeof(sa))) - { - syslog(LOG_ERR, _("Could not bind to %s: %s"), device, strerror(errno)); - return -1; - } -cp - /* Set default MAC address for ethertap devices */ - - mymac.type = SUBNET_MAC; - mymac.net.mac.address.x[0] = 0xfe; - mymac.net.mac.address.x[1] = 0xfd; - mymac.net.mac.address.x[2] = 0x00; - mymac.net.mac.address.x[3] = 0x00; - mymac.net.mac.address.x[4] = 0x00; - mymac.net.mac.address.x[5] = 0x00; - - syslog(LOG_INFO, _("%s is a %s"), device, device_info); -cp - return 0; + struct ifreq ifr; + struct sockaddr_ll sa; + + cp(); + + if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) + iface = xstrdup("eth0"); + + if(!get_config_string(lookup_config(config_tree, "Device"), &device)) + device = xstrdup(iface); + + device_info = _("raw socket"); + + if((device_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) { + logger(LOG_ERR, _("Could not open %s: %s"), device_info, + strerror(errno)); + return false; + } + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ); + if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) { + close(device_fd); + logger(LOG_ERR, _("Can't find interface %s: %s"), iface, + strerror(errno)); + return false; + } + + memset(&sa, '0', sizeof(sa)); + sa.sll_family = AF_PACKET; + sa.sll_protocol = htons(ETH_P_ALL); + sa.sll_ifindex = ifr.ifr_ifindex; + + if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) { + logger(LOG_ERR, _("Could not bind %s to %s: %s"), device, iface, strerror(errno)); + return false; + } + + logger(LOG_INFO, _("%s is a %s"), device, device_info); + + return true; } void close_device(void) { -cp - close(device_fd); + cp(); + + close(device_fd); + + free(device); + free(iface); } -/* - read, encrypt and send data that is - available through the ethertap device -*/ -int read_packet(vpn_packet_t *packet) +bool read_packet(vpn_packet_t *packet) { - int lenin; -cp + int lenin; - if((lenin = read(device_fd, packet->data, MTU)) <= 0) - { - syslog(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno)); - return -1; - } + cp(); - packet->len = lenin; + 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; + } - device_total_in += packet->len; + packet->len = lenin; - if(debug_lvl >= DEBUG_TRAFFIC) - { - syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len, device_info); - } + device_total_in += packet->len; - return 0; -cp + ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len, + device_info); + + return true; } -int write_packet(vpn_packet_t *packet) +bool write_packet(vpn_packet_t *packet) { -cp - if(debug_lvl >= DEBUG_TRAFFIC) - syslog(LOG_DEBUG, _("Writing packet of %d bytes to %s"), - packet->len, device_info); - - if(write(device_fd, packet->data, packet->len) < 0) - { - syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno)); - return -1; - } - - device_total_out += packet->len; -cp - return 0; + cp(); + + ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"), + packet->len, device_info); + + if(write(device_fd, packet->data, packet->len) < 0) { + logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, + strerror(errno)); + return false; + } + + device_total_out += packet->len; + + return true; } void dump_device_stats(void) { -cp - syslog(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device); - syslog(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in); - syslog(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out); -cp + cp(); + + 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); }