+++ /dev/null
-#!/usr/bin/python
-"""Main CGI script for web interface"""
-
-import base64
-import cPickle
-import cgi
-import datetime
-import hmac
-import os
-import sha
-import simplejson
-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')
-
-import templates
-from Cheetah.Template import Template
-from sipb_xen_database import Machine, CDROM, ctx, connect
-import validation
-from webcommon import InvalidInput, CodeError, g
-import controls
-
-class Checkpoint:
- def __init__(self):
- self.start_time = time.time()
- self.checkpoints = []
-
- def checkpoint(self, s):
- self.checkpoints.append((s, time.time()))
-
- def __str__(self):
- return ('Timing info:\n%s\n' %
- '\n'.join(['%s: %s' % (d, t - self.start_time) for
- (d, t) in self.checkpoints]))
-
-checkpoint = Checkpoint()
-
-
-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>')
-
-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'}
-
-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 templates.error(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 templates.invalid(searchList=[d])
-
-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 parseCreate(user, fields):
- name = fields.getfirst('name')
- if not validation.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.")
-
- owner = validation.testOwner(user, fields.getfirst('owner'))
-
- memory = fields.getfirst('memory')
- memory = validation.validMemory(user, memory, on=True)
-
- disk = fields.getfirst('disk')
- disk = validation.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(contact=user, name=name, memory=memory, disk=disk,
- owner=owner, is_hvm=is_hvm, cdrom=cdrom)
-
-def create(user, fields):
- """Handler for create requests."""
- try:
- parsed_fields = parseCreate(user, fields)
- machine = controls.createVm(**parsed_fields)
- except InvalidInput, err:
- pass
- else:
- err = None
- 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']
- return templates.list(searchList=[d])
-
-
-def getListDict(user):
- machines = [m for m in Machine.select()
- if validation.haveAccess(user, m)]
- checkpoint.checkpoint('Got my machines')
- on = {}
- has_vnc = {}
- on = g.uptimes
- checkpoint.checkpoint('Got 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")
- max_memory = validation.maxMemory(user)
- max_disk = validation.maxDisk(user)
- checkpoint.checkpoint('Got max mem/disk')
- defaults = Defaults(max_memory=max_memory,
- max_disk=max_disk,
- owner=user,
- cdrom='gutsy-i386')
- checkpoint.checkpoint('Got defaults')
- d = dict(user=user,
- cant_add_vm=validation.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."""
- checkpoint.checkpoint('Getting list dict')
- d = getListDict(user)
- checkpoint.checkpoint('Got list dict')
- return templates.list(searchList=[d])
-
-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 = validation.testMachineId(user, fields.getfirst('machine_id'))
-
- TOKEN_KEY = "0M6W0U1IXexThi5idy8mnkqPKEq1LtEnlK/pZSn0cDrN"
-
- data = {}
- data["user"] = user
- 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 = controls.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 templates.vnc(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])
- if not i:
- data_dict['nic%s_hostname' % i] = (machine.name +
- '.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 GiB" % (disk.size / 1024.)
- return disk_fields
-
-def command(user, fields):
- """Handler for running commands like boot and delete on a VM."""
- back = fields.getfirst('back')
- try:
- d = controls.commandResult(user, fields)
- if d['command'] == 'Delete VM':
- back = 'list'
- except InvalidInput, err:
- if not back:
- raise
- print >> sys.stderr, err
- result = None
- else:
- result = 'Success!'
- if not back:
- return templates.command(searchList=[d])
- if back == 'list':
- g.clear() #Changed global state
- d = getListDict(user)
- d['result'] = result
- return templates.list(searchList=[d])
- elif back == 'info':
- machine = validation.testMachineId(user, fields.getfirst('machine_id'))
- d = infoDict(user, machine)
- d['result'] = result
- return templates.info(searchList=[d])
- else:
- raise InvalidInput
- ('back', back, 'Not a known back page.')
-
-def modifyDict(user, fields):
- olddisk = {}
- transaction = ctx.current.create_transaction()
- try:
- machine = validation.testMachineId(user, fields.getfirst('machine_id'))
- owner = validation.testOwner(user, fields.getfirst('owner'), machine)
- admin = validation.testAdmin(user, fields.getfirst('administrator'),
- machine)
- contact = validation.testContact(user, fields.getfirst('contact'),
- machine)
- name = validation.testName(user, fields.getfirst('name'), machine)
- oldname = machine.name
- command = "modify"
-
- memory = fields.getfirst('memory')
- if memory is not None:
- memory = validation.validMemory(user, memory, machine, on=False)
- machine.memory = memory
-
- disksize = validation.testDisk(user, fields.getfirst('disk'))
- if disksize is not None:
- disksize = validation.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)
-
- 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:
- controls.resizeDisk(oldname, diskname, str(olddisk[diskname]))
- if name is not None:
- controls.renameMachine(machine, oldname, name)
- return dict(user=user,
- command=command,
- machine=machine)
-
-def modify(user, fields):
- """Handler for modifying attributes of a machine."""
- try:
- modify_dict = modifyDict(user, fields)
- except InvalidInput, err:
- result = None
- machine = validation.testMachineId(user, fields.getfirst('machine_id'))
- else:
- machine = modify_dict['machine']
- result = 'Success!'
- err = None
- info_dict = infoDict(user, machine)
- info_dict['err'] = err
- if err:
- for field in fields.keys():
- setattr(info_dict['defaults'], field, fields.getfirst(field))
- info_dict['result'] = result
- return templates.info(searchList=[info_dict])
-
-
-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 templates.help(searchList=[d])
-
-
-def badOperation(u, e):
- raise CodeError("Unknown operation")
-
-def infoDict(user, machine):
- status = controls.statusInfo(machine)
- checkpoint.checkpoint('Getting status info')
- 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))
- checkpoint.checkpoint('Status')
- 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'] += ' MiB'
- 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))
-
- checkpoint.checkpoint('Got fields')
-
-
- max_mem = validation.maxMemory(user, machine, False)
- checkpoint.checkpoint('Got mem')
- max_disk = validation.maxDisk(user, machine)
- defaults = Defaults()
- for name in 'machine_id name administrator owner memory contact'.split():
- setattr(defaults, name, getattr(machine, name))
- defaults.disk = "%0.2f" % (machine.disks[0].size/1024.)
- checkpoint.checkpoint('Got defaults')
- 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 = validation.testMachineId(user, fields.getfirst('machine_id'))
- d = infoDict(user, machine)
- checkpoint.checkpoint('Got infodict')
- return templates.info(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 username
- else:
- return 'moo'
-
-def main(operation, user, fields):
- start_time = time.time()
- fun = mapping.get(operation, badOperation)
-
- if fun not in (helpHandler, ):
- connect('postgres://sipb-xen@sipb-xen-dev.mit.edu/sipb_xen')
- try:
- checkpoint.checkpoint('Before')
- output = fun(u, fields)
- checkpoint.checkpoint('After')
-
- 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)
- output_string = str(output)
- checkpoint.checkpoint('output as a string')
- print output_string
- print '<pre>%s</pre>' % checkpoint
- 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
-
-if __name__ == '__main__':
- fields = cgi.FieldStorage()
- u = getUser()
- g.user = 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'
-
- #main(operation, u, fields)
- import profile
- profile.run('main(operation, u, fields)', 'log-'+operation)
-
projects / invirt/packages/invirt-web.git / blobdiff