add MkIdentifyReply skeleton

vendortools/enumip.py

@@ -1,3 +1,5 @@
+# python 3 compatible
+
 import socket
 import struct
 import array

vendortools/nfutil.py

@@ -76,6 +76,28 @@ TEST_REPLY_FMT                  = "!32s"
 MAX_ATTEMPTS                    = 10
 MAX_TIMEOUT                     = 0.5
 
+#---- NOTES ----
+# Header Format: !2cH6s2x
+#    ! : Big Endian, std format
+#    2c: 2 bytes
+#    H : unsigned short 0-65535 (2 bytes)
+#    6s: 6 byte array
+#    2x: 2 pad (null) bytes
+#
+#    NF_MAGIC: 1 byte
+#    COMMAND: 1 byte
+#    SEQUENCE: 2 bytes
+#    ETH_ADDR (MAC): 6 bytes
+#    PAD: 2 bytes
+#        Total: 12 bytes
+#
+#    Example: b'Z\x00V\x81\xff\xff\xff\xff\xff\xff\x00\x00'
+#        NF_MAGIC: b'Z' (HEX: 5A, DEC: 90)
+#        COMMAND: b'\x00' (NF_IDENTIFY)
+#        SEQUENCE: b'V\x81' (22145)
+#        ETH_ADDR (MAC): b'\xff\xff\xff\xff\xff\xff' (FF:FF:FF:FF:FF:FF)
+#        PAD: b'\x00\x00'
+
 
 #-----------------------------------------------------------------------------
 def MkHeader(header, seq, eth_addr):
@@ -94,8 +116,51 @@ def MkIdentify(seq):
 
 
 #-----------------------------------------------------------------------------
-def MkAssignment(seq, eth_addr, ip_type, ip_addr, netmask, gateway):
+def MkIdentifyReply(seq, vDev):
+    # header: 12 bytes
+    # IdentifyReplyData: 64 bytes
+    # header
+    #    NF_MAGIC
+    #    NF_IDENTIFY_REPLY
+    #    seq
+    # IdentifyReplyData
+    #    uptime_days [0-65535]
+    #    uptime_hrs [0-23]
+    #    uptime_min [0-59]
+    #    uptime_secs [0-59]
+    #    mode []
+    #    alert []
+    #    ip_type [static|dynamic]
+    #    ip_addr [255.255.255.255]
+    #    ip_netmask [255.255.255.255]
+    #    ip_gw [255.255.255.255]
+    #    app_ver [255.255.255.255]
+    #    boot_ver [255.255.255.255]
+    #    hw_ver [255.255.255.255]
+    #    name [32 chars]
+    # todo: setup vDev class, VirtualDevice, which will provide the answers
+    #       for the reply data
+    return MkHeader(NF_IDENTIFY_REPLY, seq, vDev.addr) + \
+        struct.pack(
+            IDENTIFY_REPLY_FMT,
+            chr(vDev.updays),
+            chr(vDev.uphrs),
+            chr(vDev.upmins),
+            chr(vDev.upsecs),
+            chr(vDev.mode),
+            chr(vDev.alert),
+            chr(vDev.iptype),
+            socket.inet_aton(vDev.ipaddr),
+            socket.inet_aton(vDev.ipnetmask),
+            socket.inet_aton(vDev.ipgw),
+            vDev.version_binary,
+            vDev.bootver_binary,
+            vDev.hwver_binary,
+            vDev.name_binary
+        )
 
+#-----------------------------------------------------------------------------
+def MkAssignment(seq, eth_addr, ip_type, ip_addr, netmask, gateway):
     return MkHeader(NF_ASSIGNMENT, seq, eth_addr) + \
         struct.pack(
             ASSIGNMENT_FMT,