From 88129dc89b753a1e9ac9016ff5ffa02c6492e508 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Thu, 16 Jun 2011 11:14:52 -0700
Subject: fw_updater: windows enumeration works

---
 host/utils/usrp_n2xx_net_burner.py | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/host/utils/usrp_n2xx_net_burner.py b/host/utils/usrp_n2xx_net_burner.py
index ec2454606..269126972 100755
--- a/host/utils/usrp_n2xx_net_burner.py
+++ b/host/utils/usrp_n2xx_net_burner.py
@@ -184,17 +184,21 @@ def win_get_interfaces():
         for a in adapterList:
             adNode = a.ipAddressList
             while True:
-                ipAddr = (adNode.ipAddress & adNode.ipMask) | ~adNode.ipMask
-                if ipAddr:
-                    yield ipAddr
+                #convert ipAddr and ipMask into hex addrs that can be turned into a bcast addr
+                ipAddr = adNode.ipAddress
+                ipMask = adNode.ipMask
+                if ipAddr and ipMask:
+                    hexAddr = struct.unpack("<L", socket.inet_aton(ipAddr))[0]
+                    hexMask = struct.unpack("<L", socket.inet_aton(ipMask))[0]
+                    if(hexAddr and hexMask): #don't broadcast on 255.255.255.255, that's just lame
+                        yield socket.inet_ntoa(struct.pack("<L", (hexAddr & hexMask) | (~hexMask) & 0xFFFFFFFF))
                 adNode = adNode.next
                 if not adNode:
                     break
 
 def enumerate_devices():
-    ifaces = get_interfaces()
     devices = []
-    for bcast_addr in ifaces:
+    for bcast_addr in get_interfaces():
         sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
         sock.settimeout(0.1)
-- 
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