diff options
Diffstat (limited to 'src/starter/interfaces.c')
| -rw-r--r-- | src/starter/interfaces.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/src/starter/interfaces.c b/src/starter/interfaces.c deleted file mode 100644 index 4a2ae0a57..000000000 --- a/src/starter/interfaces.c +++ /dev/null @@ -1,213 +0,0 @@ -/* strongSwan IPsec interfaces management - * Copyright (C) 2001-2002 Mathieu Lafon - Arkoon Network Security - * 2009 Heiko Hund - Astaro AG - * - * 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 the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - */ - -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include <freeswan.h> - -#include <constants.h> -#include <defs.h> -#include <log.h> - -#include "interfaces.h" -#include "exec.h" -#include "files.h" - -#ifdef START_PLUTO - -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <linux/rtnetlink.h> -#ifdef HAVE_SYS_SOCKIO_H -#include <sys/sockio.h> -#endif - -/* - * Get the default route information via rtnetlink - */ -void -get_defaultroute(defaultroute_t *defaultroute) -{ - union { - struct { - struct nlmsghdr nh; - struct rtmsg rt; - } m; - char buf[4096]; - } rtu; - - struct nlmsghdr *nh; - uint32_t best_metric = ~0; - ssize_t msglen; - int fd; - - memset(&rtu, 0, sizeof(rtu)); - rtu.m.nh.nlmsg_len = NLMSG_LENGTH(sizeof(rtu.m.rt)); - rtu.m.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - rtu.m.nh.nlmsg_type = RTM_GETROUTE; - rtu.m.rt.rtm_family = AF_INET; - rtu.m.rt.rtm_table = RT_TABLE_UNSPEC; - rtu.m.rt.rtm_protocol = RTPROT_UNSPEC; - rtu.m.rt.rtm_type = RTN_UNICAST; - - fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE); - if (fd == -1) - { - plog("could not create rtnetlink socket"); - return; - } - - if (send(fd, &rtu, rtu.m.nh.nlmsg_len, 0) == -1) - { - plog("could not write to rtnetlink socket"); - close(fd); - return; - } - - msglen = recv(fd, &rtu, sizeof(rtu), MSG_WAITALL); - if (msglen == -1) - { - plog("could not read from rtnetlink socket"); - close(fd); - return; - } - - close(fd); - - for (nh = &rtu.m.nh; NLMSG_OK(nh, msglen); nh = NLMSG_NEXT(nh, msglen)) - { - struct rtmsg *rt; - struct rtattr *rta; - uint32_t rtalen, metric = 0; - struct in_addr gw = { .s_addr = INADDR_ANY }; - int iface_idx = -1; - - if (nh->nlmsg_type == NLMSG_ERROR) - { - plog("error from rtnetlink"); - return; - } - - if (nh->nlmsg_type == NLMSG_DONE) - break; - - rt = NLMSG_DATA(nh); - if ( rt->rtm_dst_len != 0 - || (rt->rtm_table != RT_TABLE_MAIN - && rt->rtm_table != RT_TABLE_DEFAULT) ) - continue; - - rta = RTM_RTA(rt); - rtalen = RTM_PAYLOAD(nh); - while ( RTA_OK(rta, rtalen) ) - { - switch (rta->rta_type) - { - case RTA_GATEWAY: - gw = *(struct in_addr *) RTA_DATA(rta); - break; - case RTA_OIF: - iface_idx = *(int *) RTA_DATA(rta); - break; - case RTA_PRIORITY: - metric = *(uint32_t *) RTA_DATA(rta); - break; - } - rta = RTA_NEXT(rta, rtalen); - } - - if (metric < best_metric - && iface_idx != -1) - { - struct ifreq req; - - fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd < 0) - { - plog("could not open AF_INET socket"); - break; - } - memset(&req, 0, sizeof(req)); - req.ifr_ifindex = iface_idx; - if (ioctl(fd, SIOCGIFNAME, &req) < 0 || - ioctl(fd, SIOCGIFADDR, &req) < 0) - { - plog("could not read interface data, ignoring route"); - close(fd); - break; - } - - strncpy(defaultroute->iface, req.ifr_name, IFNAMSIZ); - defaultroute->iface[IFNAMSIZ-1] = '\0'; - defaultroute->addr.u.v4 = *((struct sockaddr_in *) &req.ifr_addr); - defaultroute->nexthop.u.v4.sin_family = AF_INET; - - if (gw.s_addr == INADDR_ANY) - { - if (ioctl(fd, SIOCGIFDSTADDR, &req) < 0 || - ((struct sockaddr_in*) &req.ifr_dstaddr)->sin_addr.s_addr == INADDR_ANY) - { - DBG_log("Ignoring default route to device %s because we can't get it's destination", - req.ifr_name); - close(fd); - break; - } - - defaultroute->nexthop.u.v4 = *((struct sockaddr_in *) &req.ifr_dstaddr); - } - else - defaultroute->nexthop.u.v4.sin_addr = gw; - - close(fd); - - DBG(DBG_CONTROL, - char addr[20]; - char nexthop[20]; - addrtot(&defaultroute->addr, 0, addr, sizeof(addr)); - addrtot(&defaultroute->nexthop, 0, nexthop, sizeof(nexthop)); - - DBG_log( - ( !defaultroute->defined - ? "Default route found: iface=%s, addr=%s, nexthop=%s" - : "Better default route: iface=%s, addr=%s, nexthop=%s" - ), defaultroute->iface, addr, nexthop - ) - ); - - best_metric = metric; - defaultroute->defined = TRUE; - } - } - defaultroute->supported = TRUE; - - if (!defaultroute->defined) - plog("no default route - cannot cope with %%defaultroute!!!"); -} - -#else /* !START_PLUTO */ - -/** - * Pluto disabled, fall back to %any - */ -void -get_defaultroute(defaultroute_t *defaultroute) -{ - defaultroute->supported = FALSE; -} -#endif /* START_PLUTO */ - |