+++ /dev/null
-from socket import *
-from select import select
-from os import popen4
-from time import sleep
-import logging
-
-LATCP_SOCKET = '/var/run/latlogin'
-
-LAT_VERSION = '1.22'
-LAT_VERSION = '1.24' # for running on Mermaid. [DAA] 20071107
-LATCP_CMD_VERSION = 8
-LATCP_CMD_TERMINALSESSION = 26
-LATCP_CMD_ERRORMSG = 99
-
-class LATClientException(Exception): pass
-
-def read_for_a_bit(rfh):
- message = ''
- while 1:
- r = select([rfh], [], [], 5.0)[0]
- if r:
- try:
- ch = rfh.read(1)
- except socket.error:
- ch = ''
- if ch == '':
- break
- message = message + ch
- else:
- break
- logging.debug("Received message: ", repr(message))
- return message
-
-def write_and_get_response(rfh, wfh, message, expect_echo=True):
- logging.debug("Writing message:", repr(message))
- wfh.write(message+'\r\n')
- wfh.flush()
- logging.debug(" --> Sent")
- response = read_for_a_bit(rfh)
- if response.find(message) == -1 and expect_echo:
- raise LATClientException("Talking to DEC server, expected to find original message in echo but didn't")
- return response
-
-class LATClient:
- def __init__(self, service = None, node = None, port = None,
- localport = None, password = None, is_queued = False,
- server_name = '', connect_password='', priv_password=''):
-
- self.server_name = server_name
- self.connect_password = connect_password
- self.priv_password = priv_password
-
- self.sock = socket(AF_UNIX, SOCK_STREAM, 0);
- self.sock.connect(LATCP_SOCKET)
- self.send_msg(LATCP_CMD_VERSION, LAT_VERSION+'\000')
- (cmd, msg) = self.read_reply()
- if service == None: service = ''
- if node == None: node = ''
- if port == None: port = ''
- if localport == None: localport = ''
- if password == None: password = ''
- if is_queued == True:
- is_queued = 1
- else:
- is_queued = 0
- self.send_msg(LATCP_CMD_TERMINALSESSION, '%c%c%s%c%s%c%s%c%s%c%s' % \
- (is_queued,
- len(service), service,
- len(node), node,
- len(port), port,
- len(localport), localport,
- len(password), password
- ))
- (cmd, msg) = self.read_reply()
- if ord(cmd) == LATCP_CMD_ERRORMSG:
- raise LATClientException(msg)
-
- self.rfh = self.sock.makefile('r')
- self.wfh = self.sock.makefile('w')
-
- r = select([self.rfh], [], [], 2.0)[0]
- if r:
- l = self.rfh.readline()
- if l.find('Service in use') >= 0:
- logging.warning("Service in use, apparently: restarting DEC server")
- self.reboot_server()
-
- def __del__(self):
- try:
- self.sock.close()
- self.sock.shutdown(2)
- except:
- pass
- del self.sock
-
- def send_msg(self, cmd, msg):
- self.sock.send('%c%c%c%s'%(cmd, len(msg)/256, len(msg)%256, msg))
-
- def reboot_server(self):
- self.sock.shutdown(2)
- self.sock.close()
-
- logging.info('Logging into DEC server')
- mopw, mopr = popen4('/usr/sbin/moprc '+self.server_name)
- write_and_get_response(mopr, mopw, '')
-
- logging.info('Sending password')
- r = write_and_get_response(mopr, mopw, self.connect_password, False)
- if r.find('Enter username> ') == -1:
- logging.warning("Expected username prompt, got " + repr(r))
- raise LATClientException('failed to reboot server')
-
- logging.info('Sending username')
- r = write_and_get_response(mopr, mopw, 'grim reaper')
- if r.find('Local> ') == -1:
- logging.warning("Expected DEC server prompt, got " + repr(r))
- raise LATClientException('failed to reboot server')
-
- logging.info('Requesting privileges')
- r = write_and_get_response(mopr, mopw, 'set priv')
- if r.find('Password> ') == -1:
- logging.warning("Expected priv password prompt, got " + repr(r))
- raise LATClientException('failed to reboot server')
-
- logging.info('Sending password')
- r = write_and_get_response(mopr, mopw, self.priv_password, False)
- if r.find('Local> ') == -1:
- logging.warning("Expected DEC server prompt, got " + repr(r))
- raise LATClientException('failed to reboot server')
-
- logging.info('Sending reboot request')
- r = write_and_get_response(mopr, mopw, 'init del 0')
- if r.find('Target does not respond') == -1:
- logging.warning("Expected DEC server to die, got " + repr(r))
- raise LATClientException('failed to reboot server')
-
- logging.info('Closed connection to server')
- mopr.close()
- mopw.close()
- logging.info("Waiting 10 seconds for DEC server to come back to life...")
- sleep(10)
- logging.info("Rightyo, back to vending!")
- raise LATClientException('needed to reboot server')
-
- def read_reply(self):
- head = self.sock.recv(3)
- if len(head) != 3:
- raise LATClientException('Short LAT packet')
- cmd = head[0]
- length = ord(head[1])*256 + ord(head[2])
- msg = self.sock.recv(length)
- if cmd == LATCP_CMD_ERRORMSG:
- raise LATClientException('Received LAT error: %s'%msg)
- return (cmd, msg)
-
- def get_fh(self):
- return (self.rfh, self.wfh)
git.ucc.asn.au / uccvend-vendserver.git / blobdiff
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