import cgi
import datetime
import hmac
+import random
import sha
import simplejson
import sys
"""Move stderr to stdout, and return the contents of the old stderr."""
errio = sys.stderr
if not isinstance(errio, StringIO):
- return None
+ return ''
sys.stderr = sys.stdout
errio.seek(0)
return errio.read()
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
-import sipb_xen_database
-from sipb_xen_database import Machine, CDROM, ctx, connect, MachineAccess, Type, Autoinstall
import validation
import cache_acls
-from webcommon import InvalidInput, CodeError, State
+from webcommon import State
import controls
+from getafsgroups import getAfsGroupMembers
+from invirt import database
+from invirt.database import Machine, CDROM, session, connect, MachineAccess, Type, Autoinstall
+from invirt.config import structs as config
+from invirt.common import InvalidInput, CodeError
+
+def pathSplit(path):
+ if path.startswith('/'):
+ path = path[1:]
+ i = path.find('/')
+ if i == -1:
+ i = len(path)
+ return path[:i], path[i:]
class Checkpoint:
def __init__(self):
else:
return '<p>STDERR:</p><pre>' + str(addition) + '</pre>'
-Template.sipb_xen_database = sipb_xen_database
+Template.database = database
+Template.config = config
Template.helppopup = staticmethod(helppopup)
Template.err = None
cdrom = ''
autoinstall = ''
name = ''
+ description = ''
type = 'linux-hvm'
def __init__(self, max_memory=None, max_disk=None, **kws):
DEFAULT_HEADERS = {'Content-Type': 'text/html'}
-def error(op, username, fields, err, emsg):
- """Print an error page when a CodeError occurs"""
- d = dict(op=op, user=username, errorMessage=str(err),
- stderr=emsg)
- return templates.error(searchList=[d])
-
def invalidInput(op, username, fields, err, emsg):
"""Print an error page when an InvalidInput exception occurs"""
d = dict(op=op, user=username, err_field=err.err_field,
return False
def parseCreate(username, state, fields):
- kws = dict([(kw, fields.getfirst(kw)) for kw in 'name owner memory disksize vmtype cdrom clone_from'.split()])
+ kws = dict([(kw, fields.getfirst(kw)) for kw in 'name description owner memory disksize vmtype cdrom autoinstall'.split()])
validate = validation.Validate(username, state, strict=True, **kws)
- return dict(contact=username, name=validate.name, memory=validate.memory,
+ return dict(contact=username, name=validate.name, description=validate.description, memory=validate.memory,
disksize=validate.disksize, owner=validate.owner, machine_type=validate.vmtype,
cdrom=getattr(validate, 'cdrom', None),
- clone_from=getattr(validate, 'clone_from', None))
+ autoinstall=getattr(validate, 'autoinstall', None))
-def create(username, state, fields):
+def create(username, state, path, fields):
"""Handler for create requests."""
try:
parsed_fields = parseCreate(username, state, fields)
checkpoint.checkpoint('Got max mem/disk')
defaults = Defaults(max_memory=max_memory,
max_disk=max_disk,
- owner=username,
- cdrom='gutsy-i386')
+ owner=username)
checkpoint.checkpoint('Got defaults')
def sortkey(machine):
return (machine.owner != username, machine.owner, machine.name)
can_clone=can_clone)
return d
-def listVms(username, state, fields):
+def listVms(username, state, path, fields):
"""Handler for list requests."""
checkpoint.checkpoint('Getting list dict')
d = getListDict(username, state)
checkpoint.checkpoint('Got list dict')
return templates.list(searchList=[d])
-def vnc(username, state, fields):
+def vnc(username, state, path, fields):
"""VNC applet page.
Note that due to same-domain restrictions, the applet connects to
"""
machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
- TOKEN_KEY = "0M6W0U1IXexThi5idy8mnkqPKEq1LtEnlK/pZSn0cDrN"
-
- data = {}
- data["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)
+ token = controls.vnctoken(machine)
+ host = controls.listHost(machine)
+ if host:
+ port = 10003 + [h.hostname for h in config.hosts].index(host)
+ else:
+ port = 5900 # dummy
status = controls.statusInfo(machine)
has_vnc = hasVnc(status)
has_vnc=has_vnc,
machine=machine,
hostname=state.environ.get('SERVER_NAME', 'localhost'),
+ port=port,
authtoken=token)
return templates.vnc(searchList=[d])
if nic.hostname and '.' in nic.hostname:
return nic.hostname
elif nic.machine:
- return nic.machine.name + '.xvm.mit.edu'
+ return nic.machine.name + '.' + config.dns.domains[0]
else:
return None
data_dict['%s_size' % name] = "%0.1f GiB" % (disk.size / 1024.)
return disk_fields
-def command(username, state, fields):
+def command(username, state, path, fields):
"""Handler for running commands like boot and delete on a VM."""
back = fields.getfirst('back')
try:
return templates.list(searchList=[d])
elif back == 'info':
machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
- return ({'Status': '302',
- 'Location': '/info?machine_id=%d' % machine.machine_id},
+ return ({'Status': '303 See Other',
+ 'Location': 'info?machine_id=%d' % machine.machine_id},
"You shouldn't see this message.")
else:
raise InvalidInput('back', back, 'Not a known back page.')
Return a list of local variables for modify.tmpl.
"""
olddisk = {}
- transaction = ctx.current.create_transaction()
+ session.begin()
try:
- kws = dict([(kw, fields.getfirst(kw)) for kw in 'machine_id owner admin contact name memory vmtype disksize'.split()])
+ kws = dict([(kw, fields.getfirst(kw)) for kw in 'machine_id owner admin contact name description memory vmtype disksize'.split()])
validate = validation.Validate(username, state, **kws)
machine = validate.machine
oldname = machine.name
if disk.size != disksize:
olddisk[disk.guest_device_name] = disksize
disk.size = disksize
- ctx.current.save(disk)
+ session.save_or_update(disk)
update_acl = False
if hasattr(validate, 'owner') and validate.owner != machine.owner:
update_acl = True
if hasattr(validate, 'name'):
machine.name = validate.name
+ if hasattr(validate, 'description'):
+ machine.description = validate.description
if hasattr(validate, 'admin') and validate.admin != machine.administrator:
machine.administrator = validate.admin
update_acl = True
if hasattr(validate, 'contact'):
machine.contact = validate.contact
- ctx.current.save(machine)
+ session.save_or_update(machine)
if update_acl:
- print >> sys.stderr, machine, machine.administrator
cache_acls.refreshMachine(machine)
- transaction.commit()
+ session.commit()
except:
- transaction.rollback()
+ session.rollback()
raise
for diskname in olddisk:
controls.resizeDisk(oldname, diskname, str(olddisk[diskname]))
command="modify",
machine=machine)
-def modify(username, state, fields):
+def modify(username, state, path, fields):
"""Handler for modifying attributes of a machine."""
try:
modify_dict = modifyDict(username, state, fields)
return templates.info(searchList=[info_dict])
-def helpHandler(username, state, fields):
+def helpHandler(username, state, path, fields):
"""Handler for help messages."""
simple = fields.getfirst('simple')
subjects = fields.getlist('subject')
- help_mapping = {'ParaVM Console': """
+ help_mapping = {
+ 'Autoinstalls': """
+The autoinstaller builds a minimal Debian or Ubuntu system to run as a
+ParaVM. You can access the resulting system by logging into the <a
+href="help?simple=true&subject=ParaVM+Console">serial console server</a>
+with your Kerberos tickets; there is no root password so sshd will
+refuse login.</p>
+
+<p>Under the covers, the autoinstaller uses our own patched version of
+xen-create-image, which is a tool based on debootstrap. If you log
+into the serial console while the install is running, you can watch
+it.
+""",
+ 'ParaVM Console': """
ParaVM machines do not support local console access over VNC. To
access the serial console of these machines, you can SSH with Kerberos
-to console.xvm.mit.edu, using the name of the machine as your
-username.""",
+to %s, using the name of the machine as your
+username.""" % config.console.hostname,
'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.""",
+ParaVM machines rely on a modified kernel to communicate directly with
+the hypervisor. HVMs support boot CDs of any operating system, and
+the VNC console applet. The three-minute autoinstaller produces
+ParaVMs. ParaVMs typically are more efficient, and always support the
+<a href="help?subject=ParaVM+Console">console server</a>.</p>
+
+<p>More details are <a
+href="https://xvm.scripts.mit.edu/wiki/Paravirtualization">on the
+wiki</a>, including steps to prepare an HVM guest to boot as a ParaVM
+(which you can skip by using the autoinstaller to begin with.)</p>
+
+<p>We recommend using a ParaVM when possible and an HVM when necessary.
+""",
'CPU Weight': """
Don't ask us! We're as mystified as you are.""",
'Owner': """
setting <tt>fb=false</tt> to disable the framebuffer. If you don't,
your machine will run just fine, but the applet's display of the
console will suffer artifacts.
+""",
+ 'Windows': """
+<strong>Windows Vista:</strong> The Vista image is licensed for all MIT students and will automatically activate off the network; see <a href="/static/msca-email.txt">the licensing confirmation e-mail</a> for details. The installer req uires 512 MB RAM and at least 7.5 GB disk space (15 GB or more recommended).<br>
+<strong>Windows XP:</strong> This is the volume license CD image. You will need your own volume license key to complete the install. We do not have these available for the general MIT community; ask your department if they have one.
"""
}
return templates.help(searchList=[d])
-def badOperation(u, s, e):
+def badOperation(u, s, p, e):
"""Function called when accessing an unknown URI."""
- raise CodeError("Unknown operation")
+ return ({'Status': '404 Not Found'}, 'Invalid operation.')
def infoDict(username, state, machine):
"""Get the variables used by info.tmpl."""
cputime = None
else:
main_status = dict(status[1:])
+ main_status['host'] = controls.listHost(machine)
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))
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'),
+ ('description', 'Description'),
('owner', 'Owner'),
('administrator', 'Administrator'),
('contact', 'Contact'),
'NIC_INFO',
('uptime', 'uptime'),
('cputime', 'CPU usage'),
+ ('host', 'Hosted on'),
('memory', 'RAM'),
'DISK_INFO',
('state', 'state (xen format)'),
fields = []
machine_info = {}
machine_info['name'] = machine.name
+ machine_info['description'] = machine.description
machine_info['type'] = machine.type.hvm and 'HVM' or 'ParaVM'
machine_info['owner'] = machine.owner
machine_info['administrator'] = machine.administrator
checkpoint.checkpoint('Got mem')
max_disk = validation.maxDisk(machine.owner, machine)
defaults = Defaults()
- for name in 'machine_id name administrator owner memory contact'.split():
+ for name in 'machine_id name description administrator owner memory contact'.split():
setattr(defaults, name, getattr(machine, name))
defaults.type = machine.type.type_id
defaults.disk = "%0.2f" % (machine.disks[0].size/1024.)
fields = fields)
return d
-def info(username, state, fields):
+def info(username, state, path, fields):
"""Handler for info on a single VM."""
machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
d = infoDict(username, state, machine)
checkpoint.checkpoint('Got infodict')
return templates.info(searchList=[d])
-def unauthFront(_, _2, fields):
+def unauthFront(_, _2, _3, fields):
"""Information for unauth'd users."""
return templates.unauth(searchList=[{'simple' : True}])
+def admin(username, state, path, fields):
+ if path == '':
+ return ({'Status': '303 See Other',
+ 'Location': 'admin/'},
+ "You shouldn't see this message.")
+ if not username in getAfsGroupMembers(config.web.adminacl, 'athena.mit.edu'):
+ raise InvalidInput('username', username,
+ 'Not in admin group %s.' % config.web.adminacl)
+ newstate = State(username, isadmin=True)
+ newstate.environ = state.environ
+ return handler(username, newstate, path, fields)
+
+def throwError(_, __, ___, ____):
+ """Throw an error, to test the error-tracing mechanisms."""
+ raise RuntimeError("test of the emergency broadcast system")
+
mapping = dict(list=listVms,
vnc=vnc,
command=command,
info=info,
create=create,
help=helpHandler,
- unauth=unauthFront)
+ unauth=unauthFront,
+ admin=admin,
+ overlord=admin,
+ errortest=throwError)
def printHeaders(headers):
"""Print a dictionary as HTTP headers."""
print '%s: %s' % (key, value)
print
+def send_error_mail(subject, body):
+ import subprocess
+
+ to = config.web.errormail
+ mail = """To: %s
+From: root@%s
+Subject: %s
+
+%s
+""" % (to, config.web.hostname, subject, body)
+ p = subprocess.Popen(['/usr/sbin/sendmail', '-f', to, to],
+ stdin=subprocess.PIPE)
+ p.stdin.write(mail)
+ p.stdin.close()
+ p.wait()
+
+def show_error(op, username, fields, err, emsg, traceback):
+ """Print an error page when an exception occurs"""
+ d = dict(op=op, user=username, fields=fields,
+ errorMessage=str(err), stderr=emsg, traceback=traceback)
+ details = templates.error_raw(searchList=[d])
+ exclude = config.web.errormail_exclude
+ if username not in exclude and '*' not in exclude:
+ send_error_mail('xvm error on %s for %s: %s' % (op, username, err),
+ details)
+ d['details'] = details
+ return templates.error(searchList=[d])
def getUser(environ):
"""Return the current user based on the SSL environment variables"""
- email = environ.get('SSL_CLIENT_S_DN_Email', None)
- if email is None:
- return None
- if not email.endswith('@MIT.EDU'):
- return None
- return email[:-8]
+ user = environ.get('REMOTE_USER')
+ if user is None:
+ return
+
+ if environ.get('AUTH_TYPE') == 'Negotiate':
+ # Convert the krb5 principal into a krb4 username
+ if not user.endswith('@%s' % config.kerberos.realm):
+ return
+ else:
+ return user.split('@')[0].replace('/', '.')
+ else:
+ return user
+
+def handler(username, state, path, fields):
+ operation, path = pathSplit(path)
+ if not operation:
+ operation = 'list'
+ print 'Starting', operation
+ fun = mapping.get(operation, badOperation)
+ return fun(username, state, path, fields)
class App:
def __init__(self, environ, start_response):
self.state = State(self.username)
self.state.environ = environ
+ random.seed() #sigh
+
def __iter__(self):
+ start_time = time.time()
+ database.clear_cache()
+ sys.stderr = StringIO()
fields = cgi.FieldStorage(fp=self.environ['wsgi.input'], environ=self.environ)
- print >> sys.stderr, fields
operation = self.environ.get('PATH_INFO', '')
if not operation:
- self.start("301 Moved Permanently", [('Location',
- self.environ['SCRIPT_NAME']+'/')])
+ self.start("301 Moved Permanently", [('Location', './')])
return
if self.username is None:
operation = 'unauth'
- if operation.startswith('/'):
- operation = operation[1:]
- if not operation:
- operation = 'list'
- print 'Starting', operation
- start_time = time.time()
- fun = mapping.get(operation, badOperation)
try:
checkpoint.checkpoint('Before')
- output = fun(self.username, self.state, fields)
+ output = handler(self.username, self.state, operation, fields)
checkpoint.checkpoint('After')
headers = dict(DEFAULT_HEADERS)
if isinstance(output, tuple):
new_headers, output = output
headers.update(new_headers)
- print 'MOO2'
e = revertStandardError()
if e:
- if isinstance(output, basestring):
- sys.stderr = StringIO()
- x = str(output)
- print >> sys.stderr, x
- print >> sys.stderr, 'XXX'
- print >> sys.stderr, e
- raise Exception()
- output.addError(e)
+ if hasattr(output, 'addError'):
+ output.addError(e)
+ else:
+ # This only happens on redirects, so it'd be a pain to get
+ # the message to the user. Maybe in the response is useful.
+ output = output + '\n\nstderr:\n' + e
output_string = str(output)
checkpoint.checkpoint('output as a string')
except Exception, err:
if not fields.has_key('js'):
- if isinstance(err, CodeError):
- self.start('500 Internal Server Error', [('Content-Type', 'text/html')])
- e = revertStandardError()
- s = error(operation, self.username, fields, err, e)
- yield str(s)
- return
if isinstance(err, InvalidInput):
self.start('200 OK', [('Content-Type', 'text/html')])
e = revertStandardError()
- yield str(invalidInput(operation, self.username, fields, err, e))
+ yield str(invalidInput(operation, self.username, fields,
+ err, e))
return
- self.start('500 Internal Server Error', [('Content-Type', 'text/plain')])
import traceback
- yield '''Uh-oh! We experienced an error.'
-Please email xvm-dev@mit.edu with the contents of this page.'
-----
-%s
-----
-%s
-----''' % (str(err), traceback.format_exc())
- self.start('200 OK', headers.items())
+ self.start('500 Internal Server Error',
+ [('Content-Type', 'text/html')])
+ e = revertStandardError()
+ s = show_error(operation, self.username, fields,
+ err, e, traceback.format_exc())
+ yield str(s)
+ return
+ status = headers.setdefault('Status', '200 OK')
+ del headers['Status']
+ self.start(status, headers.items())
yield output_string
if fields.has_key('timedebug'):
yield '<pre>%s</pre>' % cgi.escape(str(checkpoint))
def constructor():
- connect('postgres://sipb-xen@sipb-xen-dev.mit.edu/sipb_xen')
+ connect()
return App
def main():
projects / invirt/packages/invirt-web.git / blobdiff