*/
#ifndef lint
-static char rcsid[] = "$Id: sys-bsd.c,v 1.6 1994/05/24 11:27:56 paulus Exp $";
+static char rcsid[] = "$Id: sys-bsd.c,v 1.7 1994/05/30 06:10:07 paulus Exp $";
#endif
/*
#include <net/if_dl.h>
#include <netinet/in.h>
+#if RTM_VERSION >= 3
+#include <netinet/if_ether.h>
+#endif
+
#include "pppd.h"
#include "ppp.h"
static int initdisc = -1; /* Initial TTY discipline */
extern int kdebugflag;
+static int rtm_seq;
/*
* establish_ppp - Turn the serial port into a ppp interface.
return 1;
}
+
/*
* sifdefaultroute - assign a default route through the address given.
*/
int u;
u_long g;
{
- struct ortentry rt;
-
- SET_SA_FAMILY(rt.rt_dst, AF_INET);
- SET_SA_FAMILY(rt.rt_gateway, AF_INET);
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
- rt.rt_flags = RTF_GATEWAY;
- if (ioctl(s, SIOCADDRT, &rt) < 0) {
- syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
- return 0;
- }
- return 1;
+ return dodefaultroute(g, 's');
}
/*
int u;
u_long g;
{
- struct ortentry rt;
-
- SET_SA_FAMILY(rt.rt_dst, AF_INET);
- SET_SA_FAMILY(rt.rt_gateway, AF_INET);
- ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
- rt.rt_flags = RTF_GATEWAY;
- if (ioctl(s, SIOCDELRT, &rt) < 0)
- syslog(LOG_WARNING, "default route ioctl(SIOCDELRT): %m");
+ return dodefaultroute(g, 'c');
+}
+
+/*
+ * dodefaultroute - talk to a routing socket to add/delete a default route.
+ */
+int
+dodefaultroute(g, cmd)
+ u_long g;
+ int cmd;
+{
+ int routes;
+ struct {
+ struct rt_msghdr hdr;
+ struct sockaddr_in dst;
+ struct sockaddr_in gway;
+ struct sockaddr_in mask;
+ } rtmsg;
+
+ if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
+ syslog(LOG_ERR, "%cifdefaultroute: opening routing socket: %m", cmd);
+ return 0;
+ }
+
+ memset(&rtmsg, 0, sizeof(rtmsg));
+ rtmsg.hdr.rtm_type = cmd == 's'? RTM_ADD: RTM_DELETE;
+ rtmsg.hdr.rtm_flags = RTF_UP | RTF_GATEWAY;
+ rtmsg.hdr.rtm_version = RTM_VERSION;
+ rtmsg.hdr.rtm_seq = ++rtm_seq;
+ rtmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
+ rtmsg.dst.sin_len = sizeof(rtmsg.dst);
+ rtmsg.dst.sin_family = AF_INET;
+ rtmsg.gway.sin_len = sizeof(rtmsg.gway);
+ rtmsg.gway.sin_family = AF_INET;
+ rtmsg.gway.sin_addr.s_addr = g;
+ rtmsg.mask.sin_len = sizeof(rtmsg.dst);
+ rtmsg.mask.sin_family = AF_INET;
+
+ rtmsg.hdr.rtm_msglen = sizeof(rtmsg);
+ if (write(routes, &rtmsg, sizeof(rtmsg)) < 0) {
+ syslog(LOG_ERR, "%s default route: %m", cmd=='s'? "add": "delete");
+ close(routes);
+ return 0;
+ }
+
+ close(routes);
+ return 1;
+}
+
+#if RTM_VERSION >= 3
+
+/*
+ * sifproxyarp - Make a proxy ARP entry for the peer.
+ */
+static struct {
+ struct rt_msghdr hdr;
+ struct sockaddr_inarp dst;
+ struct sockaddr_dl hwa;
+ char extra[128];
+} arpmsg;
+
+static int arpmsg_valid;
+
+int
+sifproxyarp(unit, hisaddr)
+ int unit;
+ u_long hisaddr;
+{
+ int routes;
+ int l;
+
+ /*
+ * Get the hardware address of an interface on the same subnet
+ * as our local address.
+ */
+ memset(&arpmsg, 0, sizeof(arpmsg));
+ if (!get_ether_addr(hisaddr, &arpmsg.hwa)) {
+ syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
+ return 0;
+ }
+
+ if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
+ syslog(LOG_ERR, "sifproxyarp: opening routing socket: %m");
+ return 0;
+ }
+
+ arpmsg.hdr.rtm_type = RTM_ADD;
+ arpmsg.hdr.rtm_flags = RTF_ANNOUNCE | RTF_HOST | RTF_STATIC;
+ arpmsg.hdr.rtm_version = RTM_VERSION;
+ arpmsg.hdr.rtm_seq = ++rtm_seq;
+ arpmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY;
+ arpmsg.hdr.rtm_inits = RTV_EXPIRE;
+ arpmsg.dst.sin_len = sizeof(struct sockaddr_inarp);
+ arpmsg.dst.sin_family = AF_INET;
+ arpmsg.dst.sin_addr.s_addr = hisaddr;
+ arpmsg.dst.sin_other = SIN_PROXY;
+
+ arpmsg.hdr.rtm_msglen = (char *) &arpmsg.hwa - (char *) &arpmsg
+ + arpmsg.hwa.sdl_len;
+ if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
+ syslog(LOG_ERR, "add proxy arp entry: %m");
+ close(routes);
+ return 0;
+ }
+
+ close(routes);
+ arpmsg_valid = 1;
+ return 1;
+}
+
+/*
+ * cifproxyarp - Delete the proxy ARP entry for the peer.
+ */
+int
+cifproxyarp(unit, hisaddr)
+ int unit;
+ u_long hisaddr;
+{
+ int routes;
+
+ if (!arpmsg_valid)
+ return 0;
+ arpmsg_valid = 0;
+
+ arpmsg.hdr.rtm_type = RTM_DELETE;
+ arpmsg.hdr.rtm_seq = ++rtm_seq;
+
+ if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
+ syslog(LOG_ERR, "sifproxyarp: opening routing socket: %m");
+ return 0;
+ }
+
+ if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
+ syslog(LOG_ERR, "delete proxy arp entry: %m");
+ close(routes);
+ return 0;
+ }
+
+ close(routes);
+ return 1;
}
+#else /* RTM_VERSION */
+
/*
* sifproxyarp - Make a proxy ARP entry for the peer.
*/
u_long hisaddr;
{
struct arpreq arpreq;
+ struct {
+ struct sockaddr_dl sdl;
+ char space[128];
+ } dls;
BZERO(&arpreq, sizeof(arpreq));
* Get the hardware address of an interface on the same subnet
* as our local address.
*/
- if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
+ if (!get_ether_addr(hisaddr, &dls.sdl)) {
syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
return 0;
}
+ arpreq.arp_ha.sa_len = sizeof(struct sockaddr);
+ arpreq.arp_ha.sa_family = AF_UNSPEC;
+ BCOPY(LLADDR(&dls.sdl), arpreq.arp_ha.sa_data, dls.sdl.sdl_alen);
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
arpreq.arp_flags = ATF_PERM | ATF_PUBL;
}
return 1;
}
+#endif /* RTM_VERSION */
+
/*
* get_ether_addr - get the hardware address of an interface on the
int
get_ether_addr(ipaddr, hwaddr)
u_long ipaddr;
- struct sockaddr *hwaddr;
+ struct sockaddr_dl *hwaddr;
{
struct ifreq *ifr, *ifend, *ifp;
u_long ina, mask;
/*
* Found the link-level address - copy it out
*/
- dla = (struct sockaddr_dl *)&ifr->ifr_addr;
- hwaddr->sa_len = sizeof(struct sockaddr);
- hwaddr->sa_family = AF_UNSPEC;
- BCOPY(LLADDR(dla), hwaddr->sa_data, dla->sdl_alen);
+ dla = (struct sockaddr_dl *) &ifr->ifr_addr;
+ BCOPY(dla, hwaddr, dla->sdl_len);
return 1;
}
ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len);
projects / ppp.git / commitdiff