1 files changed, 60 insertions, 0 deletions
diff --git a/node-admin/scripts/pyroute2/dhcp/dhcp4msg.py b/node-admin/scripts/pyroute2/dhcp/dhcp4msg.py
new file mode 100644
index 00000000000..4cd27c5d75c
--- /dev/null
+++ b/node-admin/scripts/pyroute2/dhcp/dhcp4msg.py
@@ -0,0 +1,60 @@
+# By Peter V. Saveliev https://pypi.python.org/pypi/pyroute2. Dual licensed under the Apache 2 and GPLv2+ see https://github.com/svinota/pyroute2 for License details.
+from socket import inet_pton
+from socket import inet_ntop
+from socket import AF_INET
+from pyroute2.dhcp import dhcpmsg
+from pyroute2.dhcp import option
+
+
+class dhcp4msg(dhcpmsg):
+    #
+    # https://www.ietf.org/rfc/rfc2131.txt
+    #
+    fields = (('op', 'uint8', 1),     # request
+              ('htype', 'uint8', 1),  # ethernet
+              ('hlen', 'uint8', 6),   # ethernet addr len
+              ('hops', 'uint8'),
+              ('xid', 'uint32'),
+              ('secs', 'uint16'),
+              ('flags', 'uint16'),
+              ('ciaddr', 'ip4addr'),
+              ('yiaddr', 'ip4addr'),
+              ('siaddr', 'ip4addr'),
+              ('giaddr', 'ip4addr'),
+              ('chaddr', 'l2paddr'),
+              ('sname', '64s'),
+              ('file', '128s'),
+              ('cookie', '4s', b'c\x82Sc'))
+    #
+    # https://www.ietf.org/rfc/rfc2132.txt
+    #
+    options = ((0, 'pad', 'none'),
+               (1, 'subnet_mask', 'ip4addr'),
+               (2, 'time_offset', 'be32'),
+               (3, 'router', 'ip4list'),
+               (4, 'time_server', 'ip4list'),
+               (5, 'ien_name_server', 'ip4list'),
+               (6, 'name_server', 'ip4list'),
+               (7, 'log_server', 'ip4list'),
+               (8, 'cookie_server', 'ip4list'),
+               (9, 'lpr_server', 'ip4list'),
+               (50, 'requested_ip', 'ip4addr'),
+               (53, 'message_type', 'uint8'),
+               (54, 'server_id', 'ip4addr'),
+               (55, 'parameter_list', 'array8'),
+               (57, 'messagi_size', 'be16'),
+               (60, 'vendor_id', 'string'),
+               (61, 'client_id', 'client_id'),
+               (255, 'end', 'none'))
+
+    class ip4addr(option):
+        policy = {'format': '4s',
+                  'encode': lambda x: inet_pton(AF_INET, x),
+                  'decode': lambda x: inet_ntop(AF_INET, x)}
+
+    class ip4list(option):
+        policy = {'format': 'string',
+                  'encode': lambda x: ''.join([inet_pton(AF_INET, i) for i
+                                               in x]),
+                  'decode': lambda x: [inet_ntop(AF_INET, x[i*4:i*4+4]) for i
+                                       in range(len(x)//4)]}