#!/usr/bin/python
#
# Reboot specified nodes
#

import getpass, getopt
import os, sys
import xml, xmlrpclib
import errno, time, traceback
import urllib2
import threading, popen2
import array, struct
#from socket import *
import socket
import plc
import base64
from subprocess import PIPE, Popen
import ssh.pxssh as pxssh
import ssh.pexpect as pexpect

plc_lock = threading.Lock()

# Use our versions of telnetlib and pyssh
sys.path.insert(0, os.path.dirname(sys.argv[0]))
import telnetlib
sys.path.insert(0, os.path.dirname(sys.argv[0]) + "/pyssh")    
import pyssh

# Timeouts in seconds
TELNET_TIMEOUT = 45

# Event class ID from pcu events
#NODE_POWER_CONTROL = 3

# Monitor user ID
#MONITOR_USER_ID = 11142

import logging
logger = logging.getLogger("monitor")
verbose = 1
#dryrun = 0;

class ExceptionNoTransport(Exception): pass
class ExceptionNotFound(Exception): pass
class ExceptionPassword(Exception): pass
class ExceptionTimeout(Exception): pass
class ExceptionPrompt(Exception): pass
class ExceptionSequence(Exception): pass
class ExceptionReset(Exception): pass
class ExceptionPort(Exception): pass
class ExceptionUsername(Exception): pass

def telnet_answer(telnet, expected, buffer):
	global verbose

	output = telnet.read_until(expected, TELNET_TIMEOUT)
	#if verbose:
	#	logger.debug(output)
	if output.find(expected) == -1:
		raise ExceptionNotFound, "'%s' not found" % expected
	else:
		telnet.write(buffer + "\r\n")


# PCU has model, host, preferred-port, user, passwd, 

# This is an object derived directly form the PLCAPI DB fields
class PCU(object):
	def __init__(self, plc_pcu_dict):
		for field in ['username', 'password', 'site_id', 
						'hostname', 'ip', 
						'pcu_id', 'model', 
						'node_ids', 'ports', ]:
			if field in plc_pcu_dict:
				self.__setattr__(field, plc_pcu_dict[field])
			else:
				raise Exception("No such field %s in PCU object" % field)

# These are the convenience functions build around the PCU object.
class PCUModel(PCU):
	def __init__(self, plc_pcu_dict):
		PCU.__init__(self, plc_pcu_dict)
		self.host = self.pcu_name()

	def pcu_name(self):
		if self.hostname is not None and self.hostname is not "":
			return self.hostname
		elif self.ip is not None and self.ip is not "":
			return self.ip
		else:
			return None

	def nodeidToPort(self, node_id):
		if node_id in self.node_ids:
			for i in range(0, len(self.node_ids)):
				if node_id == self.node_ids[i]:
					return self.ports[i]

		raise Exception("No such Node ID: %d" % node_id)

# This class captures the observed pcu records from FindBadPCUs.py
class PCURecord:
	def __init__(self, pcu_record_dict):
		for field in ['nodenames', 'portstatus', 
						'dnsmatch', 
						'complete_entry', ]:
			if field in pcu_record_dict:
				if field == "reboot":
					self.__setattr__("reboot_str", pcu_record_dict[field])
				else:
					self.__setattr__(field, pcu_record_dict[field])
			else:
				raise Exception("No such field %s in pcu record dict" % field)

class Transport:
	TELNET = 1
	SSH    = 2
	HTTP   = 3

	TELNET_TIMEOUT = 60

	def __init__(self, type, verbose):
		self.type = type
		self.verbose = verbose
		self.transport = None

#	def __del__(self):
#		if self.transport:
#			self.close()

	def open(self, host, username=None, password=None, prompt="User Name"):
		transport = None

		if self.type == self.TELNET:
			transport = telnetlib.Telnet(host, timeout=self.TELNET_TIMEOUT)
			transport.set_debuglevel(self.verbose)
			if username is not None:
				self.transport = transport
				self.ifThenSend(prompt, username, ExceptionUsername)

		elif self.type == self.SSH:
			if username is not None:
				transport = pyssh.Ssh(username, host)
				transport.set_debuglevel(self.verbose)
				transport.open()
				# TODO: have an ssh set_debuglevel() also...
			else:
				raise Exception("Username cannot be None for ssh transport.")
		elif self.type == self.HTTP:
			self.url = "http://%s:%d/" % (host,80)
			uri = "%s:%d" % (host,80)

			# create authinfo
			authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm()
			authinfo.add_password (None, uri, username, password)
			authhandler = urllib2.HTTPBasicAuthHandler( authinfo )

			transport = urllib2.build_opener(authhandler)

		else:
			raise Exception("Unknown transport type: %s" % self.type)

		self.transport = transport
		return True

	def close(self):
		if self.type == self.TELNET:
			self.transport.close() 
		elif self.type == self.SSH:
			self.transport.close() 
		elif self.type == self.HTTP:
			pass
		else:
			raise Exception("Unknown transport type %s" % self.type)
		self.transport = None

	def sendHTTP(self, resource, data):
		if self.verbose:
			print "POSTing '%s' to %s" % (data,self.url + resource)

		try:
			f = self.transport.open(self.url + resource ,data)
			r = f.read()
			if self.verbose:
				print r

		except urllib2.URLError,err:
			logger.info('Could not open http connection', err)
			return "http transport error"

		return 0

	def sendPassword(self, password, prompt=None):
		if self.type == self.TELNET:
			if prompt == None:
				self.ifThenSend("Password", password, ExceptionPassword)
			else:
				self.ifThenSend(prompt, password, ExceptionPassword)
		elif self.type == self.SSH:
			self.ifThenSend("password:", password, ExceptionPassword)
		elif self.type == self.HTTP:
			pass
		else:
			raise Exception("Unknown transport type: %s" % self.type)

	def ifThenSend(self, expected, buffer, ErrorClass=ExceptionPrompt):

		if self.transport != None:
			output = self.transport.read_until(expected, self.TELNET_TIMEOUT)
			if output.find(expected) == -1:
				raise ErrorClass, "'%s' not found" % expected
			else:
				self.transport.write(buffer + "\r\n")
		else:
			raise ExceptionNoTransport("transport object is type None")

	def ifElse(self, expected, ErrorClass):
		try:
			self.transport.read_until(expected, self.TELNET_TIMEOUT)
		except:
			raise ErrorClass("Could not find '%s' within timeout" % expected)
			

class PCUControl(Transport,PCUModel,PCURecord):
	def __init__(self, plc_pcu_record, verbose, supported_ports=[]):
		PCUModel.__init__(self, plc_pcu_record)
		PCURecord.__init__(self, plc_pcu_record)
		type = None
		if self.portstatus:
			if '22' in supported_ports and self.portstatus['22'] == "open":
				type = Transport.SSH
			elif '23' in supported_ports and self.portstatus['23'] == "open":
				type = Transport.TELNET
			elif '80' in supported_ports and self.portstatus['80'] == "open":
				type = Transport.HTTP
			elif '443' in supported_ports and self.portstatus['443'] == "open":
				type = Transport.HTTP
			elif '5869' in supported_ports and self.portstatus['5869'] == "open":
				# For DRAC cards.  not sure how much it's used in the
				# protocol.. but racadm opens this port.
				type = Transport.HTTP
			else:
				raise ExceptionPort("Unsupported Port: No transport from open ports")
		Transport.__init__(self, type, verbose)

	def run(self, node_port, dryrun):
		""" This function is to be defined by the specific PCU instance.  """
		pass
		
	def reboot(self, node_port, dryrun):
		try:
			return self.run(node_port, dryrun)
		except ExceptionNotFound, err:
			return "error: " + str(err)
		except ExceptionPassword, err:
			return "password exception: " + str(err)
		except ExceptionTimeout, err:
			return "timeout exception: " + str(err)
		except ExceptionUsername, err:
			return "exception: no username prompt: " + str(err)
		except ExceptionSequence, err:
			return "sequence error: " + str(err)
		except ExceptionPrompt, err:
			return "prompt exception: " + str(err)
		except ExceptionPort, err:
			return "no ports exception: " + str(err)
		except socket.error, err:
			return "socket error: timeout: " + str(err)
		except EOFError, err:
			if self.verbose:
				logger.debug("reboot: EOF")
				logger.debug(err)
			self.transport.close()
			import traceback
			traceback.print_exc()
			return "EOF connection reset" + str(err)
		#except Exception, err:
		#	if self.verbose:
		#		logger.debug("reboot: Exception")
		#		logger.debug(err)
		#	if self.transport:
		#		self.transport.close()
		#	import traceback
		#	traceback.print_exc()
		#	return  "generic exception; unknown problem."

		
class IPAL(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host)

		# XXX Some iPals require you to hit Enter a few times first
		self.ifThenSend("Password >", "\r\n\r\n", ExceptionNotFound)

		# Login
		self.ifThenSend("Password >", self.password, ExceptionPassword)
		self.transport.write("\r\n\r\n")

		if not dryrun: # P# - Pulse relay
			self.ifThenSend("Enter >", 
							"P%d" % node_port, 
							ExceptionNotFound)
		# Get the next prompt
		self.ifElse("Enter >", ExceptionTimeout)

		self.close()
		return 0

def ipal_reboot(ip, password, port, dryrun):
	global verbose
	global plc_lock
	telnet = None

	try:
		#plc_lock.acquire()
		#print "lock acquired"

		#try:
			#telnet = telnetlib.Telnet(ip) # , timeout=TELNET_TIMEOUT)
		telnet = telnetlib.Telnet(ip, timeout=TELNET_TIMEOUT)
		#except:
		#	import traceback
		#	traceback.print_exc()


		telnet.set_debuglevel(verbose)

		# XXX Some iPals require you to hit Enter a few times first
		telnet_answer(telnet, "Password >", "\r\n\r\n")

		# Login
		telnet_answer(telnet, "Password >", password)

		# XXX Some iPals require you to hit Enter a few times first
		telnet.write("\r\n\r\n")

		# P# - Pulse relay
		if not dryrun:
			telnet_answer(telnet, "Enter >", "P%d" % port)

		telnet.read_until("Enter >", TELNET_TIMEOUT)

		# Close
		telnet.close()

		#print "lock released"
		#plc_lock.release()
		return 0

	except EOFError, err:
		if verbose:
			logger.debug("ipal_reboot: EOF")
			logger.debug(err)
		telnet.close()
		import traceback
		traceback.print_exc()
		#print "lock released"
		#plc_lock.release()
		return errno.ECONNRESET
	except socket.error, err:
		logger.debug("ipal_reboot: Socket Error")
		logger.debug(err)
		import traceback
		traceback.print_exc()

		return errno.ETIMEDOUT
		
	except Exception, err:
		if verbose:
			logger.debug("ipal_reboot: Exception")
			logger.debug(err)
		if telnet:
			telnet.close()
		import traceback
		traceback.print_exc()
		#print "lock released"
		#plc_lock.release()
		return  "ipal error"

class APCEurope(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		self.ifThenSend("\r\n> ", "1", ExceptionPassword)
		self.ifThenSend("\r\n> ", "2")
		self.ifThenSend("\r\n> ", str(node_port))
		# 3- Immediate Reboot		  
		self.ifThenSend("\r\n> ", "3")

		if not dryrun:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"YES\r\n",
							ExceptionSequence)
		else:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"", ExceptionSequence)
		self.ifThenSend("Press <ENTER> to continue...", "", ExceptionSequence)

		self.close()
		return 0

class APCBrazil(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		self.ifThenSend("\r\n> ", "1", ExceptionPassword)
		self.ifThenSend("\r\n> ", str(node_port))
		# 4- Immediate Reboot		  
		self.ifThenSend("\r\n> ", "4")

		if not dryrun:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"YES\r\n",
							ExceptionSequence)
		else:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"", ExceptionSequence)
		self.ifThenSend("Press <ENTER> to continue...", "", ExceptionSequence)

		self.close()
		return 0

class APCBerlin(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		self.ifThenSend("\r\n> ", "1", ExceptionPassword)
		self.ifThenSend("\r\n> ", "2")
		self.ifThenSend("\r\n> ", "1")
		self.ifThenSend("\r\n> ", str(node_port))
		# 3- Immediate Reboot		  
		self.ifThenSend("\r\n> ", "3")

		if not dryrun:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"YES\r\n",
							ExceptionSequence)
		else:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"", ExceptionSequence)
		self.ifThenSend("Press <ENTER> to continue...", "", ExceptionSequence)

		self.close()
		return 0

class APCFolsom(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		self.ifThenSend("\r\n> ", "1", ExceptionPassword)
		self.ifThenSend("\r\n> ", "2")
		self.ifThenSend("\r\n> ", "1")
		self.ifThenSend("\r\n> ", str(node_port))
		self.ifThenSend("\r\n> ", "1")

		# 3- Immediate Reboot		  
		self.ifThenSend("\r\n> ", "3")

		if not dryrun:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"YES\r\n",
							ExceptionSequence)
		else:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"", ExceptionSequence)
		self.ifThenSend("Press <ENTER> to continue...", "", ExceptionSequence)

		self.close()
		return 0

class APCMaster(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		# 1- Device Manager
		self.ifThenSend("\r\n> ", "1", ExceptionPassword)
		# 3- Outlet Control/Config
		self.ifThenSend("\r\n> ", "3")
		# n- Outlet n
		self.ifThenSend("\r\n> ", str(node_port))
		# 1- Control Outlet
		self.ifThenSend("\r\n> ", "1")
		# 3- Immediate Reboot		  
		self.ifThenSend("\r\n> ", "3")

		if not dryrun:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"YES\r\n",
							ExceptionSequence)
		else:
			self.ifThenSend("Enter 'YES' to continue or <ENTER> to cancel", 
							"", ExceptionSequence)
		self.ifThenSend("Press <ENTER> to continue...", "", ExceptionSequence)

		self.close()
		return 0

class APC(PCUControl):
	def __init__(self, plc_pcu_record, verbose):
		PCUControl.__init__(self, plc_pcu_record, verbose)

		self.master = APCMaster(plc_pcu_record, verbose)
		self.folsom = APCFolsom(plc_pcu_record, verbose)
		self.europe = APCEurope(plc_pcu_record, verbose)

	def run(self, node_port, dryrun):
		try_again = True
		sleep_time = 1

		for pcu in [self.master, self.europe, self.folsom]:
			if try_again:
				try:
					print "-*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*"
					try_again = False
					print "sleeping 5"
					time.sleep(sleep_time)
					ret = pcu.reboot(node_port, dryrun)
				except ExceptionSequence, err:
					del pcu
					sleep_time = 130
					try_again = True

		if try_again:
			return "Unknown reboot sequence for APC PCU"
		else:
			return ret

class DRACRacAdm(PCUControl):
	def run(self, node_port, dryrun):

		print "trying racadm_reboot..."
		racadm_reboot(self.host, self.username, self.password, node_port, dryrun)

		return 0

class DRAC(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		print "logging in..."
		self.transport.write("\r\n")
		# Testing Reboot ?
		if dryrun:
			self.ifThenSend("[%s]#" % self.username, "getsysinfo")
		else:
			# Reset this machine
			self.ifThenSend("[%s]#" % self.username, "serveraction powercycle")

		self.ifThenSend("[%s]#" % self.username, "exit")

		self.close()
		return 0

class HPiLO(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		# </>hpiLO-> 
		self.ifThenSend("</>hpiLO->", "cd system1")

		# Reboot Outlet  N	  (Y/N)?
		if dryrun:
			self.ifThenSend("</system1>hpiLO->", "POWER")
		else:
			# Reset this machine
			self.ifThenSend("</system1>hpiLO->", "reset")

		self.ifThenSend("</system1>hpiLO->", "exit")

		self.close()
		return 0

		
class HPiLOHttps(PCUControl):
	def run(self, node_port, dryrun):

		cmd = "cmdhttps/locfg.pl -s %s -f %s -u %s -p %s" % (
					self.host, "iloxml/Get_Network.xml", 
					self.username, self.password)
		p_ilo  = Popen(cmd, stdout=PIPE, shell=True)
		cmd2 = "grep 'MESSAGE' | grep -v 'No error'"
		p_grep = Popen(cmd2, stdin=p_ilo.stdout, stdout=PIPE, stderr=PIPE, shell=True)
		sout, serr = p_grep.communicate()

		p_ilo.wait()
		p_grep.wait()
		if sout.strip() != "":
			print "sout: %s" % sout.strip()
			return sout.strip()

		if not dryrun:
			cmd = "cmdhttps/locfg.pl -s %s -f %s -u %s -p %s" % (
					self.host, "iloxml/Reset_Server.xml", 
					self.username, self.password)
			p_ilo = Popen(cmd, stdin=PIPE, stdout=PIPE, shell=True)
			cmd2 = "grep 'MESSAGE' | grep -v 'No error'"
			p_grep = Popen(cmd2, stdin=p_ilo.stdout, stdout=PIPE, stderr=PIPE)
			sout, serr = p_grep.communicate()
			p_ilo.wait()
			p_grep.wait()

			if sout.strip() != "":
				print "sout: %s" % sout.strip()
				return sout.strip()

		return 0

class BayTechAU(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username, None, "Enter user name:")
		self.sendPassword(self.password, "Enter Password:")

		#self.ifThenSend("RPC-16>", "Status")
		self.ifThenSend("RPC3-NC>", "Reboot %d" % node_port)

		# Reboot Outlet  N	  (Y/N)?
		if dryrun:
			self.ifThenSend("(Y/N)?", "N")
		else:
			self.ifThenSend("(Y/N)?", "Y")
		self.ifThenSend("RPC3-NC>", "")

		self.close()
		return 0

class BayTechGeorgeTown(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username, None, "Enter user name:")
		self.sendPassword(self.password, "Enter Password:")

		#self.ifThenSend("RPC-16>", "Status")

		self.ifThenSend("RPC-16>", "Reboot %d" % node_port)

		# Reboot Outlet  N	  (Y/N)?
		if dryrun:
			self.ifThenSend("(Y/N)?", "N")
		else:
			self.ifThenSend("(Y/N)?", "Y")
		self.ifThenSend("RPC-16>", "")

		self.close()
		return 0

class BayTechCtrlCUnibe(PCUControl):
	"""
		For some reason, these units let you log in fine, but they hang
		indefinitely, unless you send a Ctrl-C after the password.  No idea
		why.
	"""
	def run(self, node_port, dryrun):
		print "BayTechCtrlC %s" % self.host

		ssh_options="-o StrictHostKeyChecking=no -o PasswordAuthentication=yes -o PubkeyAuthentication=no"
		s = pxssh.pxssh()
		if not s.login(self.host, self.username, self.password, ssh_options):
			raise ExceptionPassword("Invalid Password")
		# Otherwise, the login succeeded.

		# Send a ctrl-c to the remote process.
		print "sending ctrl-c"
		s.send(chr(3))

		# Control Outlets  (5 ,1).........5
		try:
			index = s.expect(["Enter Request :"])

			if index == 0:
				print "3"
				s.send("3\r\n")
				index = s.expect(["DS-RPC>", "Enter user name:"])
				if index == 1:
					s.send(self.username + "\r\n")
					index = s.expect(["DS-RPC>"])

				if index == 0:
					print "Reboot %d" % node_port
					s.send("Reboot %d\r\n" % node_port)

					index = s.expect(["(Y/N)?"])
					if index == 0:
						if dryrun:
							print "sending N"
							s.send("N\r\n")
						else:
							print "sending Y"
							s.send("Y\r\n")

				#index = s.expect(["DS-RPC>"])
				#print "got prompt back"

			s.close()

		except pexpect.EOF:
			raise ExceptionPrompt("EOF before 'Enter Request' Prompt")
		except pexpect.TIMEOUT:
			raise ExceptionPrompt("Timeout before 'Enter Request' Prompt")

		return 0

class BayTechCtrlC(PCUControl):
	"""
		For some reason, these units let you log in fine, but they hang
		indefinitely, unless you send a Ctrl-C after the password.  No idea
		why.
	"""
	def run(self, node_port, dryrun):
		print "BayTechCtrlC %s" % self.host

		ssh_options="-o StrictHostKeyChecking=no -o PasswordAuthentication=yes -o PubkeyAuthentication=no"
		s = pxssh.pxssh()
		if not s.login(self.host, self.username, self.password, ssh_options):
			raise ExceptionPassword("Invalid Password")
		# Otherwise, the login succeeded.

		# Send a ctrl-c to the remote process.
		print "sending ctrl-c"
		s.send(chr(3))

		# Control Outlets  (5 ,1).........5
		try:
			index = s.expect(["Enter Request :"])

			if index == 0:
				print "5"
				s.send("5\r\n")
				index = s.expect(["DS-RPC>", "Enter user name:"])
				if index == 1:
					print "sending username"
					s.send(self.username + "\r\n")
					index = s.expect(["DS-RPC>"])

				if index == 0:
					print "Reboot %d" % node_port
					s.send("Reboot %d\r\n" % node_port)

					index = s.expect(["(Y/N)?"])
					if index == 0:
						if dryrun:
							print "sending N"
							s.send("N\r\n")
						else:
							print "sending Y"
							s.send("Y\r\n")

				#index = s.expect(["DS-RPC>"])
				#print "got prompt back"

			s.close()

		except pexpect.EOF:
			raise ExceptionPrompt("EOF before 'Enter Request' Prompt")
		except pexpect.TIMEOUT:
			raise ExceptionPrompt("Timeout before 'Enter Request' Prompt")

		return 0

class BayTech(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host, self.username)
		self.sendPassword(self.password)

		# Control Outlets  (5 ,1).........5
		self.ifThenSend("Enter Request :", "5")

		# Reboot N
		try:
			self.ifThenSend("DS-RPC>", "Reboot %d" % node_port, ExceptionNotFound)
		except ExceptionNotFound, msg:
			# one machine is configured to ask for a username,
			# even after login...
			print "msg: %s" % msg
			self.transport.write(self.username + "\r\n")
			self.ifThenSend("DS-RPC>", "Reboot %d" % node_port)

		# Reboot Outlet  N	  (Y/N)?
		if dryrun:
			self.ifThenSend("(Y/N)?", "N")
		else:
			self.ifThenSend("(Y/N)?", "Y")
		self.ifThenSend("DS-RPC>", "")

		self.close()
		return 0

class WTIIPS4(PCUControl):
	def run(self, node_port, dryrun):
		self.open(self.host)
		self.sendPassword(self.password, "Enter Password:")

		self.ifThenSend("IPS> ", "/Boot %s" % node_port)
		if not dryrun:
			self.ifThenSend("Sure? (Y/N): ", "N")
		else:
			self.ifThenSend("Sure? (Y/N): ", "Y")

		self.ifThenSend("IPS> ", "")

		self.close()
		return 0

class ePowerSwitchGood(PCUControl):
	# NOTE:
	# 		The old code used Python's HTTPPasswordMgrWithDefaultRealm()
	#		For some reason this both doesn't work and in some cases, actually
	#		hangs the PCU.  Definitely not what we want.
	#		
	# 		The code below is much simpler.  Just letting things fail first,
	# 		and then, trying again with authentication string in the header.
	#		
	def run(self, node_port, dryrun):
		self.transport = None
		self.url = "http://%s:%d/" % (self.host,80)
		uri = "%s:%d" % (self.host,80)

		req = urllib2.Request(self.url)
		try:
			handle = urllib2.urlopen(req)
		except IOError, e:
			# NOTE: this is expected to fail initially
			pass
		else:
			print self.url
			print "-----------"
			print handle.read()
			print "-----------"
			return "ERROR: not protected by HTTP authentication"

		if not hasattr(e, 'code') or e.code != 401:
			return "ERROR: failed for: %s" % str(e)

		base64data = base64.encodestring("%s:%s" % (self.username, self.password))[:-1]
		# NOTE: assuming basic realm authentication.
		authheader = "Basic %s" % base64data
		req.add_header("Authorization", authheader)

		try:
			f = urllib2.urlopen(req)
		except IOError, e:
			# failing here means the User/passwd is wrong (hopefully)
			raise ExceptionPassword("Incorrect username/password")

		# TODO: after verifying that the user/password is correct, we should
		# actually reboot the given node.

		if not dryrun:
			# add data to handler,
			# fetch url one more time on cmd.html, econtrol.html or whatever.
			pass

		if self.verbose: print f.read()

		self.close()
		return 0


class ePowerSwitchOld(PCUControl):
	def run(self, node_port, dryrun):
		self.url = "http://%s:%d/" % (self.host,80)
		uri = "%s:%d" % (self.host,80)

		# create authinfo
		authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm()
		authinfo.add_password (None, uri, self.username, self.password)
		authhandler = urllib2.HTTPBasicAuthHandler( authinfo )

		# NOTE: it doesn't seem to matter whether this authinfo is here or not.
		transport = urllib2.build_opener(authinfo)
		f = transport.open(self.url)
		if self.verbose: print f.read()

		if not dryrun:
			transport = urllib2.build_opener(authhandler)
			f = transport.open(self.url + "cmd.html", "P%d=r" % node_port)
			if self.verbose: print f.read()

		self.close()
		return 0

class ePowerSwitch(PCUControl):
	def run(self, node_port, dryrun):
		self.url = "http://%s:%d/" % (self.host,80)
		uri = "%s:%d" % (self.host,80)

		# TODO: I'm still not sure what the deal is here.
		# 		two independent calls appear to need to be made before the
		# 		reboot will succeed.  It doesn't seem to be possible to do
		# 		this with a single call.  I have no idea why.

		# create authinfo
		authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm()
		authinfo.add_password (None, uri, self.username, self.password)
		authhandler = urllib2.HTTPBasicAuthHandler( authinfo )

		# NOTE: it doesn't seem to matter whether this authinfo is here or not.
		transport = urllib2.build_opener()
		f = transport.open(self.url + "elogin.html", "pwd=%s" % self.password)
		if self.verbose: print f.read()

		if not dryrun:
			transport = urllib2.build_opener(authhandler)
			f = transport.open(self.url + "econtrol.html", "P%d=r" % node_port)
			if self.verbose: print f.read()

		#	data= "P%d=r" % node_port
		#self.open(self.host, self.username, self.password)
		#self.sendHTTP("elogin.html", "pwd=%s" % self.password)
		#self.sendHTTP("econtrol.html", data)
		#self.sendHTTP("cmd.html", data)

		self.close()
		return 0
		

### rebooting european BlackBox PSE boxes
# Thierry Parmentelat - May 11 2005
# tested on 4-ports models known as PSE505-FR
# uses http to POST a data 'P<port>=r'
# relies on basic authentication within http1.0
# first curl-based script was
# curl --http1.0 --basic --user <username>:<password> --data P<port>=r \
#	http://<hostname>:<http_port>/cmd.html && echo OK

def bbpse_reboot (pcu_ip,username,password,port_in_pcu,http_port, dryrun):

	global verbose

	url = "http://%s:%d/cmd.html" % (pcu_ip,http_port)
	data= "P%d=r" % port_in_pcu
	if verbose:
		logger.debug("POSTing '%s' on %s" % (data,url))

	authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm()
	uri = "%s:%d" % (pcu_ip,http_port)
	authinfo.add_password (None, uri, username, password)
	authhandler = urllib2.HTTPBasicAuthHandler( authinfo )

	opener = urllib2.build_opener(authhandler)
	urllib2.install_opener(opener)

	if (dryrun):
		return 0

	try:
		f = urllib2.urlopen(url,data)

		r= f.read()
		if verbose:
			logger.debug(r)
		return 0

	except urllib2.URLError,err:
		logger.info('Could not open http connection', err)
		return "bbpse error"

### rebooting x10toggle based systems addressed by port
# Marc E. Fiuczynski - May 31 2005
# tested on 4-ports models known as PSE505-FR
# uses ssh and password to login to an account
# that will cause the system to be powercycled.

def x10toggle_reboot(ip, username, password, port, dryrun):
	global verbose

	ssh = None
	try:
		ssh = pyssh.Ssh(username, ip)
		ssh.open()

		# Login
		telnet_answer(ssh, "password:", password)

		if not dryrun:
			# Reboot
			telnet_answer(ssh, "x10toggle>", "A%d" % port)

		# Close
		output = ssh.close()
		if verbose:
			logger.debug(output)
		return 0

	except Exception, err:
		if verbose:
			logger.debug(err)
		if ssh:
			output = ssh.close()
			if verbose:
				logger.debug(output)
		return errno.ETIMEDOUT

### rebooting Dell systems via RAC card
# Marc E. Fiuczynski - June 01 2005
# tested with David Lowenthal's itchy/scratchy nodes at UGA
#

def runcmd(command, args, username, password, timeout = None):

	result = [None]
	result_ready = threading.Condition()

	def set_result(x):

		result_ready.acquire()
		try:
			result[0] = x
		finally:
			result_ready.notify()
			result_ready.release()

	def do_command(command, username, password):

		try:
			# Popen4 is a popen-type class that combines stdout and stderr
			p = popen2.Popen4(command)

			# read all output data
			p.tochild.write("%s\n" % username)
			p.tochild.write("%s\n" % password)
			p.tochild.close()
			data = p.fromchild.read()

			while True:
				# might get interrupted by a signal in poll() or waitpid()
				try:
					retval = p.wait()
					set_result((retval, data))
					break
				except OSError, ex:
					if ex.errno == errno.EINTR:
						continue
					raise ex
		except Exception, ex:
			set_result(ex)

	if args:
		command = " ".join([command] + args)

	worker = threading.Thread(target = do_command, args = (command, username, password, ))
	worker.setDaemon(True)
	result_ready.acquire()
	worker.start()
	result_ready.wait(timeout)
	try:
		if result == [None]:
			raise Exception, "command timed-out: '%s'" % command
	finally:
		result_ready.release()
	result = result[0]

	if isinstance(result, Exception):
		raise result
	else:
		(retval, data) = result
		if os.WIFEXITED(retval) and os.WEXITSTATUS(retval) == 0:
			return data
		else:
			out = "system command ('%s') " % command
			if os.WIFEXITED(retval):
				out += "failed, rc = %d" % os.WEXITSTATUS(retval)
			else:
				out += "killed by signal %d" % os.WTERMSIG(retval)
			if data:
				out += "; output follows:\n" + data
			raise Exception, out

def racadm_reboot(ip, username, password, port, dryrun):
	global verbose

	try:
		cmd = "/usr/sbin/racadm"
		os.stat(cmd)
		if not dryrun:
			output = runcmd(cmd, ["-r %s -i serveraction powercycle" % ip],
				username, password)
		else:
			output = runcmd(cmd, ["-r %s -i getsysinfo" % ip],
				username, password)

		print "RUNCMD: %s" % output
		if verbose:
			logger.debug(output)
		return 0

	except Exception, err:
		logger.debug("runcmd raised exception %s" % err)
		if verbose:
			logger.debug(err)
		return -1

def pcu_name(pcu):
	if pcu['hostname'] is not None and pcu['hostname'] is not "":
		return pcu['hostname']
	elif pcu['ip'] is not None and pcu['ip'] is not "":
		return pcu['ip']
	else:
		return None

def get_pcu_values(pcu_id):
	# TODO: obviously, this shouldn't be loaded each time...
	import soltesz
	fb =soltesz.dbLoad("findbadpcus")

	try:
		values = fb['nodes']["id_%s" % pcu_id]['values']
	except:
		values = None

	return values

def check_open_port(values, port_list):
	ret = False

	if 'portstatus' in values:
		for port in port_list:
			if	port in values['portstatus'] and \
				values['portstatus'][port] == "open":

				ret = True
	
	return ret
	
def reboot_policy(nodename, continue_probe, dryrun):
	global verbose

	pcu = plc.getpcu(nodename)
	if not pcu:
		return False # "%s has no pcu" % nodename

	values = get_pcu_values(pcu['pcu_id'])
	if values == None:
		return False #"no info for pcu_id %s" % pcu['pcu_id']
	
	# Try the PCU first
	logger.debug("Trying PCU %s %s" % (pcu['hostname'], pcu['model']))

	ret = reboot_test(nodename, values, continue_probe, verbose, dryrun)

	if ret != 0:
		return False
	else:
		return True

def reboot_test(nodename, values, continue_probe, verbose, dryrun):
	rb_ret = ""

	try:
		# DataProbe iPal (many sites)
		if  continue_probe and values['model'].find("Dataprobe IP-41x/IP-81x") >= 0:
			ipal = IPAL(values, verbose, ['23'])
			rb_ret = ipal.reboot(values[nodename], dryrun)
				
		# APC Masterswitch (Berkeley)
		elif continue_probe and values['model'].find("APC AP79xx/Masterswitch") >= 0:

			# TODO: make a more robust version of APC
			if values['pcu_id'] in [1163,1055,1111,1231,1113,1127,1128,1148]:
				apc = APCEurope(values, verbose, ['22', '23'])
				rb_ret = apc.reboot(values[nodename], dryrun)

			elif values['pcu_id'] in [1110,86]:
				apc = APCBrazil(values, verbose, ['22', '23'])
				rb_ret = apc.reboot(values[nodename], dryrun)

			elif values['pcu_id'] in [1221]:
				apc = APCBerlin(values, verbose, ['22', '23'])
				rb_ret = apc.reboot(values[nodename], dryrun)

			elif values['pcu_id'] in [1173,1221,1220,1225]:
				apc = APCFolsom(values, verbose, ['22', '23'])
				rb_ret = apc.reboot(values[nodename], dryrun)

			else:
				apc = APCMaster(values, verbose, ['22', '23'])
				rb_ret = apc.reboot(values[nodename], dryrun)

		# BayTech DS4-RPC
		elif continue_probe and values['model'].find("Baytech DS4-RPC") >= 0:
			if values['pcu_id'] in [1052,1209,1002,1008,1041,1013,1022]:
				# These  require a 'ctrl-c' to be sent... 
				baytech = BayTechCtrlC(values, verbose, ['22', '23'])
				rb_ret = baytech.reboot(values[nodename], dryrun)

			elif values['pcu_id'] in [93]:
				baytech = BayTechAU(values, verbose, ['22', '23'])
				rb_ret = baytech.reboot(values[nodename], dryrun)

			elif values['pcu_id'] in [1057]:
				# These  require a 'ctrl-c' to be sent... 
				baytech = BayTechCtrlCUnibe(values, verbose, ['22', '23'])
				rb_ret = baytech.reboot(values[nodename], dryrun)

			elif values['pcu_id'] in [1012]:
				# This pcu sometimes doesn't present the 'Username' prompt,
				# unless you immediately try again...
				try:
					baytech = BayTechGeorgeTown(values, verbose, ['22', '23'])
					rb_ret = baytech.reboot(values[nodename], dryrun)
				except:
					baytech = BayTechGeorgeTown(values, verbose, ['22', '23'])
					rb_ret = baytech.reboot(values[nodename], dryrun)
			else:
				baytech = BayTech(values, verbose, ['22', '23'])
				rb_ret = baytech.reboot(values[nodename], dryrun)

		# iLO
		elif continue_probe and values['model'].find("HP iLO") >= 0:
			try:
				hpilo = HPiLO(values, verbose, ['22'])
				rb_ret = hpilo.reboot(0, dryrun)
				if rb_ret != 0:
					hpilo = HPiLOHttps(values, verbose, ['443'])
					rb_ret = hpilo.reboot(0, dryrun)
			except:
				hpilo = HPiLOHttps(values, verbose, ['443'])
				rb_ret = hpilo.reboot(0, dryrun)

		# DRAC ssh
		elif continue_probe and values['model'].find("Dell RAC") >= 0:
			# TODO: I don't think DRACRacAdm will throw an exception for the
			# default method to catch...
			try:
				drac = DRACRacAdm(values, verbose, ['443', '5869'])
				rb_ret = drac.reboot(0, dryrun)
			except:
				drac = DRAC(values, verbose, ['22'])
				rb_ret = drac.reboot(0, dryrun)

		elif continue_probe and values['model'].find("WTI IPS-4") >= 0:
				wti = WTIIPS4(values, verbose, ['23'])
				rb_ret = wti.reboot(values[nodename], dryrun)

		# BlackBox PSExxx-xx (e.g. PSE505-FR)
		elif continue_probe and \
			(values['model'].find("BlackBox PS5xx") >= 0 or
			 values['model'].find("ePowerSwitch 1/4/8x") >=0 ):

			# TODO: allow a different port than http 80.
			if values['pcu_id'] in [1089, 1071, 1046, 1035, 1118]:
				eps = ePowerSwitchGood(values, verbose, ['80'])
			elif values['pcu_id'] in [1003]:
				eps = ePowerSwitch(values, verbose, ['80'])
			else:
				eps = ePowerSwitchGood(values, verbose, ['80'])

			rb_ret = eps.reboot(values[nodename], dryrun)

		elif continue_probe:
			rb_ret = "Unsupported_PCU"

		elif continue_probe == False:
			if 'portstatus' in values:
				rb_ret = "NetDown"
			else:
				rb_ret = "Not_Run"
		else:
			rb_ret = -1

	except ExceptionPort, err:
		rb_ret = str(err)

	return rb_ret
	# ????
	#elif continue_probe and values['protocol'] == "racadm" and \
	#		values['model'] == "RAC":
	#	rb_ret = racadm_reboot(pcu_name(values),
	#								  values['username'],
	#								  values['password'],
	#								  pcu[nodename],
	#								  dryrun)

# Returns true if rebooted via PCU
def reboot_old(nodename, dryrun):
	pcu = plc.getpcu(nodename)
	if not pcu:
		plc.nodePOD(nodename)
		return False
	# Try the PCU first
	logger.debug("Trying PCU %s %s" % (pcu['hostname'], pcu['model']))

	# APC Masterswitch (Berkeley)
	if pcu['model'] == "APC Masterswitch":
		err = apc_reboot(pcu['ip'], pcu['username'],pcu['password'], 
				pcu[nodename], pcu['protocol'], dryrun)

	# DataProbe iPal (many sites)
	elif pcu['protocol'] == "telnet" and pcu['model'].find("IP-4") >= 0:
		err = ipal_reboot(pcu['ip'],pcu['password'], pcu[nodename], dryrun)

	# BayTech DS4-RPC
	elif pcu['protocol'] == "ssh" and \
	(pcu['model'].find("Baytech") >= 0 or pcu['model'].find("DS4") >= 0):
		err = baytech_reboot(pcu['ip'], pcu['username'],pcu['password'], pcu[nodename], dryrun)

	# BlackBox PSExxx-xx (e.g. PSE505-FR)
	elif pcu['protocol'] == "http" and (pcu['model'] == "bbpse"):
		err = bbpse_reboot(pcu['ip'], pcu['username'], pcu['password'], pcu[nodename],80, dryrun)

	# x10toggle
	elif pcu['protocol'] == "ssh" and (pcu['model'] == "x10toggle"):
		err = x10toggle_reboot(pcu['ip'], pcu['username'],pcu['password'], pcu[nodename], dryrun)

	# 
	elif pcu['protocol'] == "racadm" and (pcu['model'] == "RAC"):
		err = racadm_reboot(pcu['ip'], pcu['username'],pcu['password'], pcu_[nodename], dryrun)

	# Unknown or unsupported
	else:
		err = errno.EPROTONOSUPPORT
		return False
	return True 


def main():
	logger.setLevel(logging.DEBUG)
	ch = logging.StreamHandler()
	ch.setLevel(logging.DEBUG)
	formatter = logging.Formatter('LOGGER - %(message)s')
	ch.setFormatter(formatter)
	logger.addHandler(ch)

	try:
		print "Rebooting %s" % sys.argv[1]
		reboot_policy(sys.argv[1], True, False)
	except Exception, err:
		print err

if __name__ == '__main__':
	import plc
	logger = logging.getLogger("monitor")
	main()