Import sources from 2011-03-30 iso image

1 files changed, 42 insertions, 0 deletions

diff --git a/sys/src/libip/myipaddr.c b/sys/src/libip/myipaddr.c
new file mode 100755
index 000000000..e1a2773bd
--- /dev/null
+++ b/sys/src/libip/myipaddr.c
@@ -0,0 +1,42 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+static uchar loopbacknet[IPaddrlen] = {
+	0, 0, 0, 0,
+	0, 0, 0, 0,
+	0, 0, 0xff, 0xff,
+	127, 0, 0, 0
+};
+static uchar loopbackmask[IPaddrlen] = {
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0xff, 0xff, 0xff,
+	0xff, 0, 0, 0
+};
+
+// find first ip addr that isn't the friggin loopback address
+// unless there are no others
+int
+myipaddr(uchar *ip, char *net)
+{
+	Ipifc *nifc;
+	Iplifc *lifc;
+	static Ipifc *ifc;
+	uchar mynet[IPaddrlen];
+
+	ifc = readipifc(net, ifc, -1);
+	for(nifc = ifc; nifc; nifc = nifc->next)
+		for(lifc = nifc->lifc; lifc; lifc = lifc->next){
+			maskip(lifc->ip, loopbackmask, mynet);
+			if(ipcmp(mynet, loopbacknet) == 0){
+				continue;
+			}
+			if(ipcmp(lifc->ip, IPnoaddr) != 0){
+				ipmove(ip, lifc->ip);
+				return 0;
+			}
+		}
+	ipmove(ip, IPnoaddr);
+	return -1;
+}