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Implement partial telnet for VMWare

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The vmware serial support demands more proper
telnet support, provide some support for negotiating
do/don't, will/won't opcodes.
This commit is contained in:
Jarrod Johnson
2025-04-25 18:41:01 -04:00
parent 85249ae71b
commit 74355e5220
1 changed files with 29 additions and 2 deletions
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31
confluent_server/confluent/plugins/hardwaremanagement/vcenter.py
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@@ -38,6 +38,7 @@ class VmConsole(conapi.Console):
self.socket.sendall(data)
def close(self):
self.connected = False
if self.socket:
self.socket.close()
@@ -46,12 +47,38 @@ class VmConsole(conapi.Console):
try:
pendingdata = self.socket.recv(1024)
except Exception as e:
print(repr(e))
pendingdata = ''
if pendingdata == '':
self.connected = False
self.datacallback(conapi.ConsoleEvent.Disconnect)
return
self.datacallback(pendingdata)
reply = b''
while pendingdata and pendingdata[0] == 255:
cmd = pendingdata[1]
if cmd == 255:
pendingdata = pendingdata[1:]
break
subcmd = pendingdata[2]
if cmd == 253: # DO
# binary, suppress go ohaed
if subcmd in (0, 3):
reply += b'\xff\xfb' + bytes([subcmd]) # will
else:
reply += b'\xff\xfc' + bytes([subcmd]) # won't do anything else
pendingdata = pendingdata[3:]
elif cmd == 251: # will
# binary, suppress go ahead, echo
if subcmd in (0, 1, 3):
reply += b'\xff\xfd' + bytes([subcmd]) # do the implemented things
else:
reply += B'\xff\xfe' + bytes([subcmd]) # don't do others'
pendingdata = pendingdata[3:]
else:
raise Exception(repr(pendingdata[:3]))
if reply:
self.write(reply)
if pendingdata:
self.datacallback(pendingdata)