+++ /dev/null
-#!/usr/bin/python
-
-import sys
-import cgi
-import os
-import string
-import subprocess
-import re
-import time
-import cPickle
-import base64
-import sha
-import hmac
-import datetime
-
-sys.stderr = sys.stdout
-sys.path.append('/home/ecprice/.local/lib/python2.5/site-packages')
-
-from Cheetah.Template import Template
-from sipb_xen_database import *
-import random
-
-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).
- """
- pass
-
-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>'
-
-
-global_dict = {}
-global_dict['helppopup'] = helppopup
-
-
-# ... 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(owner):
- """Return the machines owned by a given owner."""
- return Machine.select_by(owner=owner)
-
-def maxMemory(user, machine=None, on=None):
- """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 a dictionary from machines to booleans, whether a machine is
- on. If None, it is recomputed. XXX make this global?
- """
-
- machines = getMachinesByOwner(user.username)
- if on is None:
- on = getUptimes(machines)
- active_machines = [x for x in machines if on[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.username)
- 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 canAddVm(user, on=None):
- machines = getMachinesByOwner(user.username)
- if on is None:
- on = getUptimes(machines)
- active_machines = [x for x in machines if on[x]]
- return (len(machines) < MAX_VMS_TOTAL and
- len(active_machines) < MAX_VMS_ACTIVE)
-
-def haveAccess(user, machine):
- """Return whether a user has access to a machine"""
- if user.username == 'moo':
- return True
- return machine.owner == user.username
-
-def error(op, user, fields, err):
- """Print an error page when a CodeError occurs"""
- d = dict(op=op, user=user, errorMessage=str(err))
- print Template(file='error.tmpl', searchList=[d, global_dict]);
-
-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)
- if kws.get('err'):
- p.wait()
- return p.stdout.read(), p.stderr.read()
- if p.wait():
- raise CodeError('ERROR on remctl %s: %s' %
- (args, p.stderr.read()))
- return p.stdout.read()
-
-def makeDisks():
- """Update the lvm partitions to include all disks in the database."""
- remctl('web', 'lvcreate')
-
-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('web', 'vmboot', machine.name,
- cdtype)
- else:
- remctl('web', 'vmboot', machine.name)
-
-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):
- """Return a dictionary mapping machine names to uptime strings"""
- value_string = remctl('web', 'listvms')
- lines = value_string.splitlines()
- d = {}
- for line in lines[1:]:
- 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('list-long', machine.name, 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("Too much memory requested")
- if disk > maxDisk(user) * 1024:
- raise InvalidInput("Too much disk requested")
- if not canAddVm(user):
- raise InvalidInput("Too many VMs requested")
- 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.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 = NIC.select_by(machine_id=None)
- if not open: #No IPs left!
- raise CodeError("No IP addresses left! Contact sipb-xen-dev@mit.edu")
- nic = open[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()
- # tell it to boot with cdrom
- bootMachine(machine, cdrom)
-
- return machine
-
-def validMemory(user, memory, machine=None):
- """Parse and validate limits for memory for a given user and machine."""
- try:
- memory = int(memory)
- if memory < MIN_MEMORY_SINGLE:
- raise ValueError
- except ValueError:
- raise InvalidInput("Invalid memory amount; must be at least %s MB" %
- MIN_MEMORY_SINGLE)
- if memory > maxMemory(user, machine):
- raise InvalidInput("Too much memory requested")
- 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("Too much disk requested")
- disk = int(disk * 1024)
- if disk < MIN_DISK_SINGLE * 1024:
- raise ValueError
- except ValueError:
- raise InvalidInput("Invalid disk amount; minimum is %s GB" %
- MIN_DISK_SINGLE)
- return disk
-
-def create(user, fields):
- """Handler for create requests."""
- name = fields.getfirst('name')
- if not validMachineName(name):
- raise InvalidInput("Invalid name '%s'" % name)
- name = user.username + '_' + name.lower()
-
- if Machine.get_by(name=name):
- raise InvalidInput("A machine named '%s' already exists" % name)
-
- memory = fields.getfirst('memory')
- memory = validMemory(user, memory)
-
- 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)
-
- machine = createVm(user, name, memory, disk, is_hvm, cdrom)
- d = dict(user=user,
- machine=machine)
- print Template(file='create.tmpl',
- searchList=[d, global_dict]);
-
-def listVms(user, fields):
- """Handler for list requests."""
- machines = [m for m in Machine.select() if haveAccess(user, m)]
- on = {}
- has_vnc = {}
- uptimes = getUptimes(machines)
- on = uptimes
- for m in machines:
- 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_mem=maxMemory(user, on=on)
- max_disk=maxDisk(user)
- d = dict(user=user,
- can_add_vm=canAddVm(user, on=on),
- max_mem=max_mem,
- max_disk=max_disk,
- default_mem=max_mem,
- default_disk=min(4.0, max_disk),
- machines=machines,
- has_vnc=has_vnc,
- uptimes=uptimes,
- cdroms=CDROM.select())
- print Template(file='list.tmpl', searchList=[d, global_dict])
-
-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)
- pickledData = cPickle.dumps(data)
- m = hmac.new(TOKEN_KEY, digestmod=sha)
- m.update(pickledData)
- token = {'data': pickledData, 'digest': m.digest()}
- token = cPickle.dumps(token)
- token = base64.urlsafe_b64encode(token)
-
- d = dict(user=user,
- machine=machine,
- hostname=os.environ.get('SERVER_NAME', 'localhost'),
- authtoken=token)
- print Template(file='vnc.tmpl',
- searchList=[d, global_dict])
-
-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."""
- 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 command(user, fields):
- """Handler for running commands like boot and delete on a VM."""
- print time.time()-start_time
- machine = testMachineId(user, fields.getfirst('machine_id'))
- action = fields.getfirst('action')
- cdrom = fields.getfirst('cdrom')
- print 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:
- remctl('reboot', machine.name, cdrom)
- else:
- remctl('reboot', machine.name)
- elif action == 'Power on':
- if maxMemory(user) < machine.memory:
- raise InvalidInput("You don't have enough free RAM quota")
- bootMachine(machine, cdrom)
- elif action == 'Power off':
- remctl('destroy', machine.name)
- elif action == 'Shutdown':
- remctl('shutdown', machine.name)
- elif action == 'Delete VM':
- deleteVM(machine)
- print time.time()-start_time
-
- d = dict(user=user,
- command=action,
- machine=machine)
- print Template(file="command.tmpl", searchList=[d, global_dict])
-
-def modify(user, fields):
- """Handler for modifying attributes of a machine."""
- #XXX not written yet
- machine = testMachineId(user, fields.getfirst('machine_id'))
-
-def help(user, fields):
- """Handler for help messages."""
- simple = fields.getfirst('simple')
- subjects = fields.getlist('subject')
-
- 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.""")
-
- d = dict(user=user,
- simple=simple,
- subjects=subjects,
- mapping=mapping)
-
- print Template(file="help.tmpl", searchList=[d, global_dict])
-
-
-def info(user, fields):
- """Handler for info on a single VM."""
- machine = testMachineId(user, fields.getfirst('machine_id'))
- status = statusInfo(machine)
- has_vnc = hasVnc(status)
- if status is None:
- main_status = dict(name=machine.name,
- memory=str(machine.memory))
- 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'),
- ('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['type'] = machine.type.hvm and 'HVM' or 'ParaVM'
- machine_info['owner'] = machine.owner
- 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'):
- fields.append((disp, locals()[field]))
- elif field in main_status:
- fields.append((disp, main_status[field]))
- elif field in machine_info:
- fields.append((disp, machine_info[field]))
- else:
- pass
- #fields.append((disp, None))
- max_mem = maxMemory(user, machine)
- max_disk = maxDisk(user, machine)
- d = dict(user=user,
- cdroms=CDROM.select(),
- on=status is not None,
- machine=machine,
- has_vnc=has_vnc,
- uptime=str(uptime),
- ram=machine.memory,
- max_mem=max_mem,
- max_disk=max_disk,
- fields = fields)
- print Template(file='info.tmpl',
- searchList=[d, global_dict])
-
-mapping = dict(list=listVms,
- vnc=vnc,
- command=command,
- modify=modify,
- info=info,
- create=create,
- help=help)
-
-if __name__ == '__main__':
- start_time = time.time()
- fields = cgi.FieldStorage()
- class User:
- username = "moo"
- email = 'moo@cow.com'
- u = User()
- if 'SSL_CLIENT_S_DN_Email' in os.environ:
- username = os.environ[ 'SSL_CLIENT_S_DN_Email'].split("@")[0]
- u.username = username
- u.email = os.environ[ 'SSL_CLIENT_S_DN_Email']
- else:
- u.username = 'moo'
- u.email = 'nobody'
- connect('postgres://sipb-xen@sipb-xen-dev/sipb_xen')
- operation = os.environ.get('PATH_INFO', '')
- #print 'Content-Type: text/plain\n'
- #print operation
- if not operation:
- print "Status: 301 Moved Permanently"
- print 'Location: ' + os.environ['SCRIPT_NAME']+'/\n'
- sys.exit(0)
- print 'Content-Type: text/html\n'
-
- if operation.startswith('/'):
- operation = operation[1:]
- if not operation:
- operation = 'list'
-
- fun = mapping.get(operation,
- lambda u, e:
- error(operation, u, e,
- "Invalid operation '%s'" % operation))
- if fun not in (help, ):
- connect('postgres://sipb-xen@sipb-xen-dev/sipb_xen')
- try:
- fun(u, fields)
- except CodeError, err:
- error(operation, u, fields, err)
- except InvalidInput, err:
- error(operation, u, fields, err)
projects / invirt/packages/invirt-web.git / blobdiff