1 files changed, 146 insertions, 0 deletions
diff --git a/src/libip/BSD.c b/src/libip/BSD.c
new file mode 100644
index 00000000..9bf2db0c
--- /dev/null
+++ b/src/libip/BSD.c
@@ -0,0 +1,146 @@
+#include <u.h>
+/* #include <everything_but_the_kitchen_sink.h> */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <sys/sysctl.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <libc.h>
+#include <ip.h>
+
+static void
+sockaddr2ip(uchar *ip, struct sockaddr *sa)
+{
+	struct sockaddr_in *sin;
+	
+	sin = (struct sockaddr_in*)sa;
+	memmove(ip, v4prefix, IPaddrlen);
+	memmove(ip+IPv4off, &sin->sin_addr, 4);
+}
+
+Ipifc*
+readipifc(char *net, Ipifc *ifc, int index)
+{
+	char *p, *ep, *q, *bp;
+	int i, mib[6];
+	size_t n;
+	Ipifc *list, **last;
+	Iplifc *lifc, **lastlifc;
+	struct if_msghdr *mh, *nmh;
+	struct ifa_msghdr *ah;
+	struct sockaddr *sa;
+	struct sockaddr_dl *sdl;
+	uchar ip[IPaddrlen];
+
+	USED(net);
+
+	free(ifc);
+	ifc = nil;
+	list = nil;
+	last = &list;
+
+	/*
+	 * Does not handle IPv6 yet.
+	 */
+
+	mib[0] = CTL_NET;
+	mib[1] = PF_ROUTE;
+	mib[2] = 0;
+	mib[3] = 0;
+	mib[4] = NET_RT_IFLIST;
+	mib[5] = 0;
+	
+	n = 0;
+	if(sysctl(mib, 6, nil, &n, nil, 0) < 0)
+		return nil;
+	bp = mallocz(n, 1);
+	if(bp == nil)
+		return nil;
+	if(sysctl(mib, 6, bp, &n, nil, 0) < 0){
+		free(bp);
+		return nil;
+	}
+
+	p = bp;
+	ep = p+n;
+	while(p < ep){
+		mh = (struct if_msghdr*)p;
+		p += mh->ifm_msglen;
+		if(mh->ifm_type != RTM_IFINFO)
+			continue;
+		ifc = mallocz(sizeof *ifc, 1);
+		if(ifc == nil)
+			break;
+		*last = ifc;
+		last = &ifc->next;
+		sdl = (struct sockaddr_dl*)(mh+1);
+		n = sdl->sdl_nlen;
+		if(n >= sizeof ifc->dev)
+			n = sizeof ifc->dev - 1;
+		memmove(ifc->dev, sdl->sdl_data, n);
+		ifc->dev[n] = 0;
+		ifc->rp.linkmtu = mh->ifm_data.ifi_mtu;
+		lastlifc = &ifc->lifc;
+
+		if(sdl->sdl_type == IFT_ETHER && sdl->sdl_alen == 6)
+			memmove(ifc->ether, LLADDR(sdl), 6);
+
+		while(p < ep){
+			ah = (struct ifa_msghdr*)p;
+			nmh = (struct if_msghdr*)p;
+			if(nmh->ifm_type != RTM_NEWADDR)
+				break;
+			p += nmh->ifm_msglen;
+			lifc = nil;
+			for(i=0, q=(char*)(ah+1); i<RTAX_MAX && q<p; i++){
+				if(!(ah->ifam_addrs & (1<<i)))
+					continue;
+				sa = (struct sockaddr*)q;
+				q += (sa->sa_len+sizeof(long)-1) & ~(sizeof(long)-1);
+				if(sa->sa_family != AF_INET)
+					continue;
+				if(lifc == nil){
+					lifc = mallocz(sizeof *lifc, 1);
+					if(lifc == nil)
+						continue;
+					*lastlifc = lifc;
+					lastlifc = &lifc->next;
+				}	
+				sockaddr2ip(ip, sa);
+				switch(i){
+				case RTAX_IFA:
+					ipmove(lifc->ip, ip);
+					break;
+				case RTAX_NETMASK:
+					memset(ip, 0xFF, IPv4off);
+					ipmove(lifc->mask, ip);
+					break;
+				case RTAX_BRD:
+					if(mh->ifm_flags & IFF_POINTOPOINT)
+						/* ipmove(lifc->remote, ip) */ ;
+					if(mh->ifm_flags & IFF_BROADCAST)
+						/* ipmove(lifc->bcast, ip) */ ;
+					break;
+				case RTAX_GATEWAY:
+					break;
+				case RTAX_DST:
+					break;
+				}
+			}
+			if(lifc)
+				maskip(lifc->ip, lifc->mask, lifc->net);
+		}
+	}
+	free(bp);
+	return list;
+}