+++ /dev/null
-#!/usr/bin/python
-"""Main CGI script for web interface"""
-
-import base64
-import cPickle
-import cgi
-import datetime
-import getafsgroups
-import hmac
-import os
-import random
-import re
-import sha
-import simplejson
-import string
-import subprocess
-import sys
-import time
-from StringIO import StringIO
-
-
-def revertStandardError():
- """Move stderr to stdout, and return the contents of the old stderr."""
- errio = sys.stderr
- if not isinstance(errio, StringIO):
- return None
- sys.stderr = sys.stdout
- errio.seek(0)
- return errio.read()
-
-def printError():
- """Revert stderr to stdout, and print the contents of stderr"""
- if isinstance(sys.stderr, StringIO):
- print revertStandardError()
-
-if __name__ == '__main__':
- import atexit
- atexit.register(printError)
- sys.stderr = StringIO()
-
-sys.path.append('/home/ecprice/.local/lib/python2.5/site-packages')
-
-from Cheetah.Template import Template
-from sipb_xen_database import *
-
-class MyException(Exception):
- """Base class for my exceptions"""
- pass
-
-class InvalidInput(MyException):
- """Exception for user-provided input is invalid but maybe in good faith.
-
- This would include setting memory to negative (which might be a
- typo) but not setting an invalid boot CD (which requires bypassing
- the select box).
- """
- def __init__(self, err_field, err_value, expl=None):
- MyException.__init__(self, expl)
- self.err_field = err_field
- self.err_value = err_value
-
-class CodeError(MyException):
- """Exception for internal errors or bad faith input."""
- pass
-
-def helppopup(subj):
- """Return HTML code for a (?) link to a specified help topic"""
- return ('<span class="helplink"><a href="help?subject=' + subj +
- '&simple=true" target="_blank" ' +
- 'onclick="return helppopup(\'' + subj + '\')">(?)</a></span>')
-
-class Global(object):
- """Global state of the system, to avoid duplicate remctls to get state"""
- def __init__(self, user):
- self.user = user
-
- def __get_uptimes(self):
- if not hasattr(self, '_uptimes'):
- self._uptimes = getUptimes(Machine.select())
- return self._uptimes
- uptimes = property(__get_uptimes)
-
- def clear(self):
- """Clear the state so future accesses reload it."""
- for attr in ('_uptimes', ):
- if hasattr(self, attr):
- delattr(self, attr)
-
-g = None
-
-class User:
- """User class (sort of useless, I admit)"""
- def __init__(self, username, email):
- self.username = username
- self.email = email
-
-def makeErrorPre(old, addition):
- if addition is None:
- return
- if old:
- return old[:-6] + '\n----\n' + str(addition) + '</pre>'
- else:
- return '<p>STDERR:</p><pre>' + str(addition) + '</pre>'
-
-Template.helppopup = staticmethod(helppopup)
-Template.err = None
-
-class JsonDict:
- """Class to store a dictionary that will be converted to JSON"""
- def __init__(self, **kws):
- self.data = kws
- if 'err' in kws:
- err = kws['err']
- del kws['err']
- self.addError(err)
-
- def __str__(self):
- return simplejson.dumps(self.data)
-
- def addError(self, text):
- """Add stderr text to be displayed on the website."""
- self.data['err'] = \
- makeErrorPre(self.data.get('err'), text)
-
-class Defaults:
- """Class to store default values for fields."""
- memory = 256
- disk = 4.0
- cdrom = ''
- name = ''
- vmtype = 'hvm'
- def __init__(self, max_memory=None, max_disk=None, **kws):
- if max_memory is not None:
- self.memory = min(self.memory, max_memory)
- if max_disk is not None:
- self.max_disk = min(self.disk, max_disk)
- for key in kws:
- setattr(self, key, kws[key])
-
-
-
-default_headers = {'Content-Type': 'text/html'}
-
-# ... and stolen from xend/uuid.py
-def randomUUID():
- """Generate a random UUID."""
-
- return [ random.randint(0, 255) for _ in range(0, 16) ]
-
-def uuidToString(u):
- """Turn a numeric UUID to a hyphen-seperated one."""
- return "-".join(["%02x" * 4, "%02x" * 2, "%02x" * 2, "%02x" * 2,
- "%02x" * 6]) % tuple(u)
-
-MAX_MEMORY_TOTAL = 512
-MAX_MEMORY_SINGLE = 256
-MIN_MEMORY_SINGLE = 16
-MAX_DISK_TOTAL = 50
-MAX_DISK_SINGLE = 50
-MIN_DISK_SINGLE = 0.1
-MAX_VMS_TOTAL = 10
-MAX_VMS_ACTIVE = 4
-
-def getMachinesByOwner(user, machine=None):
- """Return the machines owned by the same as a machine.
-
- If the machine is None, return the machines owned by the same
- user.
- """
- if machine:
- owner = machine.owner
- else:
- owner = user.username
- return Machine.select_by(owner=owner)
-
-def maxMemory(user, machine=None, on=True):
- """Return the maximum memory for a machine or a user.
-
- If machine is None, return the memory available for a new
- machine. Else, return the maximum that machine can have.
-
- on is whether the machine should be turned on. If false, the max
- memory for the machine to change to, if it is left off, is
- returned.
- """
- if not on:
- return MAX_MEMORY_SINGLE
- machines = getMachinesByOwner(user, machine)
- active_machines = [x for x in machines if g.uptimes[x]]
- mem_usage = sum([x.memory for x in active_machines if x != machine])
- return min(MAX_MEMORY_SINGLE, MAX_MEMORY_TOTAL-mem_usage)
-
-def maxDisk(user, machine=None):
- machines = getMachinesByOwner(user, machine)
- disk_usage = sum([sum([y.size for y in x.disks])
- for x in machines if x != machine])
- return min(MAX_DISK_SINGLE, MAX_DISK_TOTAL-disk_usage/1024.)
-
-def cantAddVm(user):
- machines = getMachinesByOwner(user)
- active_machines = [x for x in machines if g.uptimes[x]]
- if len(machines) >= MAX_VMS_TOTAL:
- return 'You have too many VMs to create a new one.'
- if len(active_machines) >= MAX_VMS_ACTIVE:
- return ('You already have the maximum number of VMs turned on. '
- 'To create more, turn one off.')
- return False
-
-def haveAccess(user, machine):
- """Return whether a user has adminstrative access to a machine"""
- if user.username == 'moo':
- return True
- if user.username in (machine.administrator, machine.owner):
- return True
- if getafsgroups.checkAfsGroup(user.username, machine.administrator,
- 'athena.mit.edu'): #XXX Cell?
- return True
- if getafsgroups.checkLockerOwner(user.username, machine.owner):
- return True
- return owns(user, machine)
-
-def owns(user, machine):
- """Return whether a user owns a machine"""
- if user.username == 'moo':
- return True
- return getafsgroups.checkLockerOwner(user.username, machine.owner)
-
-def error(op, user, fields, err, emsg):
- """Print an error page when a CodeError occurs"""
- d = dict(op=op, user=user, errorMessage=str(err),
- stderr=emsg)
- return Template(file='error.tmpl', searchList=[d]);
-
-def invalidInput(op, user, fields, err, emsg):
- """Print an error page when an InvalidInput exception occurs"""
- d = dict(op=op, user=user, err_field=err.err_field,
- err_value=str(err.err_value), stderr=emsg,
- errorMessage=str(err))
- return Template(file='invalid.tmpl', searchList=[d]);
-
-def validMachineName(name):
- """Check that name is valid for a machine name"""
- if not name:
- return False
- charset = string.ascii_letters + string.digits + '-_'
- if name[0] in '-_' or len(name) > 22:
- return False
- for x in name:
- if x not in charset:
- return False
- return True
-
-def kinit(username = 'tabbott/extra', keytab = '/etc/tabbott.keytab'):
- """Kinit with a given username and keytab"""
-
- p = subprocess.Popen(['kinit', "-k", "-t", keytab, username],
- stderr=subprocess.PIPE)
- e = p.wait()
- if e:
- raise CodeError("Error %s in kinit: %s" % (e, p.stderr.read()))
-
-def checkKinit():
- """If we lack tickets, kinit."""
- p = subprocess.Popen(['klist', '-s'])
- if p.wait():
- kinit()
-
-def remctl(*args, **kws):
- """Perform a remctl and return the output.
-
- kinits if necessary, and outputs errors to stderr.
- """
- checkKinit()
- p = subprocess.Popen(['remctl', 'black-mesa.mit.edu']
- + list(args),
- stdout=subprocess.PIPE,
- stderr=subprocess.PIPE)
- v = p.wait()
- if kws.get('err'):
- return p.stdout.read(), p.stderr.read()
- if v:
- print >> sys.stderr, 'Error', v, 'on remctl', args, ':'
- print >> sys.stderr, p.stderr.read()
- raise CodeError('ERROR on remctl')
- return p.stdout.read()
-
-def lvcreate(machine, disk):
- """Create a single disk for a machine"""
- remctl('web', 'lvcreate', machine.name,
- disk.guest_device_name, str(disk.size))
-
-def makeDisks(machine):
- """Update the lvm partitions to add a disk."""
- for disk in machine.disks:
- lvcreate(machine, disk)
-
-def bootMachine(machine, cdtype):
- """Boot a machine with a given boot CD.
-
- If cdtype is None, give no boot cd. Otherwise, it is the string
- id of the CD (e.g. 'gutsy_i386')
- """
- if cdtype is not None:
- remctl('control', machine.name, 'create',
- cdtype)
- else:
- remctl('control', machine.name, 'create')
-
-def registerMachine(machine):
- """Register a machine to be controlled by the web interface"""
- remctl('web', 'register', machine.name)
-
-def unregisterMachine(machine):
- """Unregister a machine to not be controlled by the web interface"""
- remctl('web', 'unregister', machine.name)
-
-def parseStatus(s):
- """Parse a status string into nested tuples of strings.
-
- s = output of xm list --long <machine_name>
- """
- values = re.split('([()])', s)
- stack = [[]]
- for v in values[2:-2]: #remove initial and final '()'
- if not v:
- continue
- v = v.strip()
- if v == '(':
- stack.append([])
- elif v == ')':
- if len(stack[-1]) == 1:
- stack[-1].append('')
- stack[-2].append(stack[-1])
- stack.pop()
- else:
- if not v:
- continue
- stack[-1].extend(v.split())
- return stack[-1]
-
-def getUptimes(machines=None):
- """Return a dictionary mapping machine names to uptime strings"""
- value_string = remctl('web', 'listvms')
- lines = value_string.splitlines()
- d = {}
- for line in lines:
- lst = line.split()
- name, id = lst[:2]
- uptime = ' '.join(lst[2:])
- d[name] = uptime
- ans = {}
- for m in machines:
- ans[m] = d.get(m.name)
- return ans
-
-def statusInfo(machine):
- """Return the status list for a given machine.
-
- Gets and parses xm list --long
- """
- value_string, err_string = remctl('control', machine.name, 'list-long',
- err=True)
- if 'Unknown command' in err_string:
- raise CodeError("ERROR in remctl list-long %s is not registered" %
- (machine.name,))
- elif 'does not exist' in err_string:
- return None
- elif err_string:
- raise CodeError("ERROR in remctl list-long %s: %s" %
- (machine.name, err_string))
- status = parseStatus(value_string)
- return status
-
-def hasVnc(status):
- """Does the machine with a given status list support VNC?"""
- if status is None:
- return False
- for l in status:
- if l[0] == 'device' and l[1][0] == 'vfb':
- d = dict(l[1][1:])
- return 'location' in d
- return False
-
-def createVm(user, name, memory, disk, is_hvm, cdrom):
- """Create a VM and put it in the database"""
- # put stuff in the table
- transaction = ctx.current.create_transaction()
- try:
- if memory > maxMemory(user):
- raise InvalidInput('memory', memory,
- "Max %s" % maxMemory(user))
- if disk > maxDisk(user) * 1024:
- raise InvalidInput('disk', disk,
- "Max %s" % maxDisk(user))
- reason = cantAddVm(user)
- if reason:
- raise InvalidInput('create', True, reason)
- res = meta.engine.execute('select nextval('
- '\'"machines_machine_id_seq"\')')
- id = res.fetchone()[0]
- machine = Machine()
- machine.machine_id = id
- machine.name = name
- machine.memory = memory
- machine.owner = user.username
- machine.administrator = user.username
- machine.contact = user.email
- machine.uuid = uuidToString(randomUUID())
- machine.boot_off_cd = True
- machine_type = Type.get_by(hvm=is_hvm)
- machine.type_id = machine_type.type_id
- ctx.current.save(machine)
- disk = Disk(machine.machine_id,
- 'hda', disk)
- open_nics = NIC.select_by(machine_id=None)
- if not open_nics: #No IPs left!
- raise CodeError("No IP addresses left! "
- "Contact sipb-xen-dev@mit.edu")
- nic = open_nics[0]
- nic.machine_id = machine.machine_id
- nic.hostname = name
- ctx.current.save(nic)
- ctx.current.save(disk)
- transaction.commit()
- except:
- transaction.rollback()
- raise
- registerMachine(machine)
- makeDisks(machine)
- # tell it to boot with cdrom
- bootMachine(machine, cdrom)
-
- return machine
-
-def validMemory(user, memory, machine=None, on=True):
- """Parse and validate limits for memory for a given user and machine.
-
- on is whether the memory must be valid after the machine is
- switched on.
- """
- try:
- memory = int(memory)
- if memory < MIN_MEMORY_SINGLE:
- raise ValueError
- except ValueError:
- raise InvalidInput('memory', memory,
- "Minimum %s MB" % MIN_MEMORY_SINGLE)
- if memory > maxMemory(user, machine, on):
- raise InvalidInput('memory', memory,
- 'Maximum %s MB' % maxMemory(user, machine))
- return memory
-
-def validDisk(user, disk, machine=None):
- """Parse and validate limits for disk for a given user and machine."""
- try:
- disk = float(disk)
- if disk > maxDisk(user, machine):
- raise InvalidInput('disk', disk,
- "Maximum %s G" % maxDisk(user, machine))
- disk = int(disk * 1024)
- if disk < MIN_DISK_SINGLE * 1024:
- raise ValueError
- except ValueError:
- raise InvalidInput('disk', disk,
- "Minimum %s GB" % MIN_DISK_SINGLE)
- return disk
-
-def parseCreate(user, fields):
- name = fields.getfirst('name')
- if not validMachineName(name):
- raise InvalidInput('name', name, 'You must provide a machine name.')
- name = name.lower()
-
- if Machine.get_by(name=name):
- raise InvalidInput('name', name,
- "Name already exists.")
-
- memory = fields.getfirst('memory')
- memory = validMemory(user, memory, on=True)
-
- disk = fields.getfirst('disk')
- disk = validDisk(user, disk)
-
- vm_type = fields.getfirst('vmtype')
- if vm_type not in ('hvm', 'paravm'):
- raise CodeError("Invalid vm type '%s'" % vm_type)
- is_hvm = (vm_type == 'hvm')
-
- cdrom = fields.getfirst('cdrom')
- if cdrom is not None and not CDROM.get(cdrom):
- raise CodeError("Invalid cdrom type '%s'" % cdrom)
- return dict(user=user, name=name, memory=memory, disk=disk,
- is_hvm=is_hvm, cdrom=cdrom)
-
-def create(user, fields):
- """Handler for create requests."""
- js = fields.getfirst('js')
- try:
- parsed_fields = parseCreate(user, fields)
- machine = createVm(**parsed_fields)
- except InvalidInput, err:
- if not js:
- raise
- else:
- err = None
- if not js:
- d = dict(user=user,
- machine=machine)
- return Template(file='create.tmpl', searchList=[d])
- g.clear() #Changed global state
- d = getListDict(user)
- d['err'] = err
- if err:
- for field in fields.keys():
- setattr(d['defaults'], field, fields.getfirst(field))
- else:
- d['new_machine'] = parsed_fields['name']
- t = Template(file='list.tmpl', searchList=[d])
- return JsonDict(createtable=t.createTable(),
- machinelist=t.machineList(d['machines']))
-
-
-def getListDict(user):
- machines = [m for m in Machine.select() if haveAccess(user, m)]
- on = {}
- has_vnc = {}
- on = g.uptimes
- for m in machines:
- m.uptime = g.uptimes.get(m)
- if not on[m]:
- has_vnc[m] = 'Off'
- elif m.type.hvm:
- has_vnc[m] = True
- else:
- has_vnc[m] = "ParaVM"+helppopup("paravm_console")
- # for m in machines:
- # status = statusInfo(m)
- # on[m.name] = status is not None
- # has_vnc[m.name] = hasVnc(status)
- max_memory = maxMemory(user)
- max_disk = maxDisk(user)
- defaults = Defaults(max_memory=max_memory,
- max_disk=max_disk,
- cdrom='gutsy-i386')
- d = dict(user=user,
- cant_add_vm=cantAddVm(user),
- max_memory=max_memory,
- max_disk=max_disk,
- defaults=defaults,
- machines=machines,
- has_vnc=has_vnc,
- uptimes=g.uptimes,
- cdroms=CDROM.select())
- return d
-
-def listVms(user, fields):
- """Handler for list requests."""
- d = getListDict(user)
- t = Template(file='list.tmpl', searchList=[d])
- js = fields.getfirst('js')
- if not js:
- return t
- if js == 'machinelist':
- return t.machineList(d['machines'])
- elif js.startswith('machinerow-'):
- request_machine_id = int(js.split('-')[1])
- m = [x for x in d['machines'] if x.id == request_machine_id]
- return t.machineRow(m)
- elif js == 'createtable':
- return t.createTable()
-
-def testMachineId(user, machineId, exists=True):
- """Parse, validate and check authorization for a given machineId.
-
- If exists is False, don't check that it exists.
- """
- if machineId is None:
- raise CodeError("No machine ID specified")
- try:
- machineId = int(machineId)
- except ValueError:
- raise CodeError("Invalid machine ID '%s'" % machineId)
- machine = Machine.get(machineId)
- if exists and machine is None:
- raise CodeError("No such machine ID '%s'" % machineId)
- if machine is not None and not haveAccess(user, machine):
- raise CodeError("No access to machine ID '%s'" % machineId)
- return machine
-
-def vnc(user, fields):
- """VNC applet page.
-
- Note that due to same-domain restrictions, the applet connects to
- the webserver, which needs to forward those requests to the xen
- server. The Xen server runs another proxy that (1) authenticates
- and (2) finds the correct port for the VM.
-
- You might want iptables like:
-
- -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \
- --dport 10003 -j DNAT --to-destination 18.181.0.60:10003
- -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \
- --dport 10003 -j SNAT --to-source 18.187.7.142
- -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \
- --dport 10003 -j ACCEPT
-
- Remember to enable iptables!
- echo 1 > /proc/sys/net/ipv4/ip_forward
- """
- machine = testMachineId(user, fields.getfirst('machine_id'))
-
- TOKEN_KEY = "0M6W0U1IXexThi5idy8mnkqPKEq1LtEnlK/pZSn0cDrN"
-
- data = {}
- data["user"] = user.username
- data["machine"] = machine.name
- data["expires"] = time.time()+(5*60)
- pickled_data = cPickle.dumps(data)
- m = hmac.new(TOKEN_KEY, digestmod=sha)
- m.update(pickled_data)
- token = {'data': pickled_data, 'digest': m.digest()}
- token = cPickle.dumps(token)
- token = base64.urlsafe_b64encode(token)
-
- status = statusInfo(machine)
- has_vnc = hasVnc(status)
-
- d = dict(user=user,
- on=status,
- has_vnc=has_vnc,
- machine=machine,
- hostname=os.environ.get('SERVER_NAME', 'localhost'),
- authtoken=token)
- return Template(file='vnc.tmpl', searchList=[d])
-
-def getNicInfo(data_dict, machine):
- """Helper function for info, get data on nics for a machine.
-
- Modifies data_dict to include the relevant data, and returns a list
- of (key, name) pairs to display "name: data_dict[key]" to the user.
- """
- data_dict['num_nics'] = len(machine.nics)
- nic_fields_template = [('nic%s_hostname', 'NIC %s hostname'),
- ('nic%s_mac', 'NIC %s MAC Addr'),
- ('nic%s_ip', 'NIC %s IP'),
- ]
- nic_fields = []
- for i in range(len(machine.nics)):
- nic_fields.extend([(x % i, y % i) for x, y in nic_fields_template])
- data_dict['nic%s_hostname' % i] = (machine.nics[i].hostname +
- '.servers.csail.mit.edu')
- data_dict['nic%s_mac' % i] = machine.nics[i].mac_addr
- data_dict['nic%s_ip' % i] = machine.nics[i].ip
- if len(machine.nics) == 1:
- nic_fields = [(x, y.replace('NIC 0 ', '')) for x, y in nic_fields]
- return nic_fields
-
-def getDiskInfo(data_dict, machine):
- """Helper function for info, get data on disks for a machine.
-
- Modifies data_dict to include the relevant data, and returns a list
- of (key, name) pairs to display "name: data_dict[key]" to the user.
- """
- data_dict['num_disks'] = len(machine.disks)
- disk_fields_template = [('%s_size', '%s size')]
- disk_fields = []
- for disk in machine.disks:
- name = disk.guest_device_name
- disk_fields.extend([(x % name, y % name) for x, y in
- disk_fields_template])
- data_dict['%s_size' % name] = "%0.1f GB" % (disk.size / 1024.)
- return disk_fields
-
-def deleteVM(machine):
- """Delete a VM."""
- remctl('control', machine.name, 'destroy', err=True)
- transaction = ctx.current.create_transaction()
- delete_disk_pairs = [(machine.name, d.guest_device_name)
- for d in machine.disks]
- try:
- for nic in machine.nics:
- nic.machine_id = None
- nic.hostname = None
- ctx.current.save(nic)
- for disk in machine.disks:
- ctx.current.delete(disk)
- ctx.current.delete(machine)
- transaction.commit()
- except:
- transaction.rollback()
- raise
- for mname, dname in delete_disk_pairs:
- remctl('web', 'lvremove', mname, dname)
- unregisterMachine(machine)
-
-def commandResult(user, fields):
- print >> sys.stderr, time.time()-start_time
- machine = testMachineId(user, fields.getfirst('machine_id'))
- action = fields.getfirst('action')
- cdrom = fields.getfirst('cdrom')
- print >> sys.stderr, time.time()-start_time
- if cdrom is not None and not CDROM.get(cdrom):
- raise CodeError("Invalid cdrom type '%s'" % cdrom)
- if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown',
- 'Delete VM'):
- raise CodeError("Invalid action '%s'" % action)
- if action == 'Reboot':
- if cdrom is not None:
- out, err = remctl('control', machine.name, 'reboot', cdrom,
- err=True)
- else:
- out, err = remctl('control', machine.name, 'reboot',
- err=True)
- if err:
- if re.match("Error: Domain '.*' does not exist.", err):
- raise InvalidInput("action", "reboot",
- "Machine is not on")
- else:
- print >> sys.stderr, 'Error on reboot:'
- print >> sys.stderr, err
- raise CodeError('ERROR on remctl')
-
- elif action == 'Power on':
- if maxMemory(user) < machine.memory:
- raise InvalidInput('action', 'Power on',
- "You don't have enough free RAM quota "
- "to turn on this machine.")
- bootMachine(machine, cdrom)
- elif action == 'Power off':
- out, err = remctl('control', machine.name, 'destroy', err=True)
- if err:
- if re.match("Error: Domain '.*' does not exist.", err):
- raise InvalidInput("action", "Power off",
- "Machine is not on.")
- else:
- print >> sys.stderr, 'Error on power off:'
- print >> sys.stderr, err
- raise CodeError('ERROR on remctl')
- elif action == 'Shutdown':
- out, err = remctl('control', machine.name, 'shutdown', err=True)
- if err:
- if re.match("Error: Domain '.*' does not exist.", err):
- raise InvalidInput("action", "Shutdown",
- "Machine is not on.")
- else:
- print >> sys.stderr, 'Error on Shutdown:'
- print >> sys.stderr, err
- raise CodeError('ERROR on remctl')
- elif action == 'Delete VM':
- deleteVM(machine)
- print >> sys.stderr, time.time()-start_time
-
- d = dict(user=user,
- command=action,
- machine=machine)
- return d
-
-def command(user, fields):
- """Handler for running commands like boot and delete on a VM."""
- js = fields.getfirst('js')
- try:
- d = commandResult(user, fields)
- except InvalidInput, err:
- if not js:
- raise
- result = None
- else:
- err = None
- result = 'Success!'
- if not js:
- return Template(file='command.tmpl', searchList=[d])
- if js == 'list':
- g.clear() #Changed global state
- d = getListDict(user)
- t = Template(file='list.tmpl', searchList=[d])
- return JsonDict(createtable=t.createTable(),
- machinelist=t.machineList(d['machines']),
- result=result,
- err=err)
- elif js == 'info':
- machine = testMachineId(user, fields.getfirst('machine_id'))
- d = infoDict(user, machine)
- t = Template(file='info.tmpl', searchList=[d])
- return JsonDict(info=t.infoTable(),
- commands=t.commands(),
- modify=t.modifyForm(),
- result=result,
- err=err)
- else:
- raise InvalidInput('js', js, 'Not a known js type.')
-
-def testAdmin(user, admin, machine):
- if admin in (None, machine.administrator):
- return None
- if admin == user.username:
- return admin
- if getafsgroups.checkAfsGroup(user.username, admin, 'athena.mit.edu'):
- return admin
- if getafsgroups.checkAfsGroup(user.username, 'system:'+admin,
- 'athena.mit.edu'):
- return 'system:'+admin
- raise InvalidInput('administrator', admin,
- 'You must control the group you move it to.')
-
-def testOwner(user, owner, machine):
- if owner in (None, machine.owner):
- return None
- value = getafsgroups.checkLockerOwner(user.username, owner, verbose=True)
- if value == True:
- return owner
- raise InvalidInput('owner', owner, value)
-
-def testContact(user, contact, machine=None):
- if contact in (None, machine.contact):
- return None
- if not re.match("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$", contact, re.I):
- raise InvalidInput('contact', contact, "Not a valid email.")
- return contact
-
-def testDisk(user, disksize, machine=None):
- return disksize
-
-def testName(user, name, machine=None):
- if name in (None, machine.name):
- return None
- if not Machine.select_by(name=name):
- return name
- raise InvalidInput('name', name, "Name is already taken.")
-
-def testHostname(user, hostname, machine):
- for nic in machine.nics:
- if hostname == nic.hostname:
- return hostname
- # check if doesn't already exist
- if NIC.select_by(hostname=hostname):
- raise InvalidInput('hostname', hostname,
- "Already exists")
- if not re.match("^[A-Z0-9-]{1,22}$", hostname, re.I):
- raise InvalidInput('hostname', hostname, "Not a valid hostname; "
- "must only use number, letters, and dashes.")
- return hostname
-
-def modifyDict(user, fields):
- olddisk = {}
- transaction = ctx.current.create_transaction()
- try:
- machine = testMachineId(user, fields.getfirst('machine_id'))
- owner = testOwner(user, fields.getfirst('owner'), machine)
- admin = testAdmin(user, fields.getfirst('administrator'), machine)
- contact = testContact(user, fields.getfirst('contact'), machine)
- hostname = testHostname(owner, fields.getfirst('hostname'), machine)
- name = testName(user, fields.getfirst('name'), machine)
- oldname = machine.name
- command = "modify"
-
- memory = fields.getfirst('memory')
- if memory is not None:
- memory = validMemory(user, memory, machine, on=False)
- machine.memory = memory
-
- disksize = testDisk(user, fields.getfirst('disk'))
- if disksize is not None:
- disksize = validDisk(user, disksize, machine)
- disk = machine.disks[0]
- if disk.size != disksize:
- olddisk[disk.guest_device_name] = disksize
- disk.size = disksize
- ctx.current.save(disk)
-
- # XXX first NIC gets hostname on change?
- # Interface doesn't support more.
- for nic in machine.nics[:1]:
- nic.hostname = hostname
- ctx.current.save(nic)
-
- if owner is not None:
- machine.owner = owner
- if name is not None:
- machine.name = name
- if admin is not None:
- machine.administrator = admin
- if contact is not None:
- machine.contact = contact
-
- ctx.current.save(machine)
- transaction.commit()
- except:
- transaction.rollback()
- raise
- for diskname in olddisk:
- remctl("web", "lvresize", oldname, diskname, str(olddisk[diskname]))
- if name is not None:
- for disk in machine.disks:
- remctl("web", "lvrename", oldname, disk.guest_device_name, name)
- remctl("web", "moveregister", oldname, name)
- return dict(user=user,
- command=command,
- machine=machine)
-
-def modify(user, fields):
- """Handler for modifying attributes of a machine."""
- js = fields.getfirst('js')
- try:
- modify_dict = modifyDict(user, fields)
- except InvalidInput, err:
- if not js:
- raise
- result = ''
- machine = testMachineId(user, fields.getfirst('machine_id'))
- else:
- machine = modify_dict['machine']
- result='Success!'
- err = None
- if not js:
- return Template(file='command.tmpl', searchList=[modify_dict])
- info_dict = infoDict(user, machine)
- info_dict['err'] = err
- if err:
- for field in fields.keys():
- setattr(info_dict['defaults'], field, fields.getfirst(field))
- t = Template(file='info.tmpl', searchList=[info_dict])
- return JsonDict(info=t.infoTable(),
- commands=t.commands(),
- modify=t.modifyForm(),
- result=result,
- err=err)
-
-
-def helpHandler(user, fields):
- """Handler for help messages."""
- simple = fields.getfirst('simple')
- subjects = fields.getlist('subject')
-
- help_mapping = dict(paravm_console="""
-ParaVM machines do not support console access over VNC. To access
-these machines, you either need to boot with a liveCD and ssh in or
-hope that the sipb-xen maintainers add support for serial consoles.""",
- hvm_paravm="""
-HVM machines use the virtualization features of the processor, while
-ParaVM machines use Xen's emulation of virtualization features. You
-want an HVM virtualized machine.""",
- cpu_weight="""
-Don't ask us! We're as mystified as you are.""",
- owner="""
-The owner field is used to determine <a
-href="help?subject=quotas">quotas</a>. It must be the name of a
-locker that you are an AFS administrator of. In particular, you or an
-AFS group you are a member of must have AFS rlidwka bits on the
-locker. You can check see who administers the LOCKER locker using the
-command 'fs la /mit/LOCKER' on Athena.) See also <a
-href="help?subject=administrator">administrator</a>.""",
- administrator="""
-The administrator field determines who can access the console and
-power on and off the machine. This can be either a user or a moira
-group.""",
- quotas="""
-Quotas are determined on a per-locker basis. Each quota may have a
-maximum of 512 megabytes of active ram, 50 gigabytes of disk, and 4
-active machines."""
- )
-
- if not subjects:
- subjects = sorted(help_mapping.keys())
-
- d = dict(user=user,
- simple=simple,
- subjects=subjects,
- mapping=help_mapping)
-
- return Template(file="help.tmpl", searchList=[d])
-
-
-def badOperation(u, e):
- raise CodeError("Unknown operation")
-
-def infoDict(user, machine):
- status = statusInfo(machine)
- has_vnc = hasVnc(status)
- if status is None:
- main_status = dict(name=machine.name,
- memory=str(machine.memory))
- uptime = None
- cputime = None
- else:
- main_status = dict(status[1:])
- start_time = float(main_status.get('start_time', 0))
- uptime = datetime.timedelta(seconds=int(time.time()-start_time))
- cpu_time_float = float(main_status.get('cpu_time', 0))
- cputime = datetime.timedelta(seconds=int(cpu_time_float))
- display_fields = """name uptime memory state cpu_weight on_reboot
- on_poweroff on_crash on_xend_start on_xend_stop bootloader""".split()
- display_fields = [('name', 'Name'),
- ('owner', 'Owner'),
- ('administrator', 'Administrator'),
- ('contact', 'Contact'),
- ('type', 'Type'),
- 'NIC_INFO',
- ('uptime', 'uptime'),
- ('cputime', 'CPU usage'),
- ('memory', 'RAM'),
- 'DISK_INFO',
- ('state', 'state (xen format)'),
- ('cpu_weight', 'CPU weight'+helppopup('cpu_weight')),
- ('on_reboot', 'Action on VM reboot'),
- ('on_poweroff', 'Action on VM poweroff'),
- ('on_crash', 'Action on VM crash'),
- ('on_xend_start', 'Action on Xen start'),
- ('on_xend_stop', 'Action on Xen stop'),
- ('bootloader', 'Bootloader options'),
- ]
- fields = []
- machine_info = {}
- machine_info['name'] = machine.name
- machine_info['type'] = machine.type.hvm and 'HVM' or 'ParaVM'
- machine_info['owner'] = machine.owner
- machine_info['administrator'] = machine.administrator
- machine_info['contact'] = machine.contact
-
- nic_fields = getNicInfo(machine_info, machine)
- nic_point = display_fields.index('NIC_INFO')
- display_fields = (display_fields[:nic_point] + nic_fields +
- display_fields[nic_point+1:])
-
- disk_fields = getDiskInfo(machine_info, machine)
- disk_point = display_fields.index('DISK_INFO')
- display_fields = (display_fields[:disk_point] + disk_fields +
- display_fields[disk_point+1:])
-
- main_status['memory'] += ' MB'
- for field, disp in display_fields:
- if field in ('uptime', 'cputime') and locals()[field] is not None:
- fields.append((disp, locals()[field]))
- elif field in machine_info:
- fields.append((disp, machine_info[field]))
- elif field in main_status:
- fields.append((disp, main_status[field]))
- else:
- pass
- #fields.append((disp, None))
- max_mem = maxMemory(user, machine)
- max_disk = maxDisk(user, machine)
- defaults=Defaults()
- for name in 'machine_id name administrator owner memory contact'.split():
- setattr(defaults, name, getattr(machine, name))
- if machine.nics:
- defaults.hostname = machine.nics[0].hostname
- defaults.disk = "%0.2f" % (machine.disks[0].size/1024.)
- d = dict(user=user,
- cdroms=CDROM.select(),
- on=status is not None,
- machine=machine,
- defaults=defaults,
- has_vnc=has_vnc,
- uptime=str(uptime),
- ram=machine.memory,
- max_mem=max_mem,
- max_disk=max_disk,
- owner_help=helppopup("owner"),
- fields = fields)
- return d
-
-def info(user, fields):
- """Handler for info on a single VM."""
- machine = testMachineId(user, fields.getfirst('machine_id'))
- d = infoDict(user, machine)
- return Template(file='info.tmpl', searchList=[d])
-
-mapping = dict(list=listVms,
- vnc=vnc,
- command=command,
- modify=modify,
- info=info,
- create=create,
- help=helpHandler)
-
-def printHeaders(headers):
- for key, value in headers.iteritems():
- print '%s: %s' % (key, value)
- print
-
-
-def getUser():
- """Return the current user based on the SSL environment variables"""
- if 'SSL_CLIENT_S_DN_Email' in os.environ:
- username = os.environ['SSL_CLIENT_S_DN_Email'].split("@")[0]
- return User(username, os.environ['SSL_CLIENT_S_DN_Email'])
- else:
- return User('moo', 'nobody')
-
-if __name__ == '__main__':
- start_time = time.time()
- fields = cgi.FieldStorage()
- u = getUser()
- g = Global(u)
- operation = os.environ.get('PATH_INFO', '')
- if not operation:
- print "Status: 301 Moved Permanently"
- print 'Location: ' + os.environ['SCRIPT_NAME']+'/\n'
- sys.exit(0)
-
- if operation.startswith('/'):
- operation = operation[1:]
- if not operation:
- operation = 'list'
-
-
-
- fun = mapping.get(operation, badOperation)
-
- if fun not in (helpHandler, ):
- connect('postgres://sipb-xen@sipb-xen-dev.mit.edu/sipb_xen')
- try:
- output = fun(u, fields)
-
- headers = dict(default_headers)
- if isinstance(output, tuple):
- new_headers, output = output
- headers.update(new_headers)
-
- e = revertStandardError()
- if e:
- output.addError(e)
- printHeaders(headers)
- print output
- except Exception, err:
- if not fields.has_key('js'):
- if isinstance(err, CodeError):
- print 'Content-Type: text/html\n'
- e = revertStandardError()
- print error(operation, u, fields, err, e)
- sys.exit(1)
- if isinstance(err, InvalidInput):
- print 'Content-Type: text/html\n'
- e = revertStandardError()
- print invalidInput(operation, u, fields, err, e)
- sys.exit(1)
- print 'Content-Type: text/plain\n'
- print 'Uh-oh! We experienced an error.'
- print 'Please email sipb-xen@mit.edu with the contents of this page.'
- print '----'
- e = revertStandardError()
- print e
- print '----'
- raise
projects / invirt/packages/invirt-web.git / blobdiff