Make it easy to kill fcgi processes.
[invirt/packages/invirt-web.git] / code / main.py
index 3fe04d5..3d880c1 100755 (executable)
@@ -6,11 +6,11 @@ import cPickle
 import cgi
 import datetime
 import hmac
-import os
 import sha
 import simplejson
 import sys
 import time
+import urllib
 from StringIO import StringIO
 
 def revertStandardError():
@@ -39,7 +39,8 @@ from Cheetah.Template import Template
 import sipb_xen_database
 from sipb_xen_database import Machine, CDROM, ctx, connect, MachineAccess, Type, Autoinstall
 import validation
-from webcommon import InvalidInput, CodeError, g
+import cache_acls
+from webcommon import InvalidInput, CodeError, State
 import controls
 
 class Checkpoint:
@@ -57,12 +58,15 @@ class Checkpoint:
 
 checkpoint = Checkpoint()
 
+def jquote(string):
+    return "'" + string.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n') + "'"
 
 def helppopup(subj):
     """Return HTML code for a (?) link to a specified help topic"""
-    return ('<span class="helplink"><a href="help?subject=' + subj +
-            '&amp;simple=true" target="_blank" ' +
-            'onclick="return helppopup(\'' + subj + '\')">(?)</a></span>')
+    return ('<span class="helplink"><a href="help?' +
+            cgi.escape(urllib.urlencode(dict(subject=subj, simple='true')))
+            +'" target="_blank" ' +
+            'onclick="return helppopup(' + cgi.escape(jquote(subj)) + ')">(?)</a></span>')
 
 def makeErrorPre(old, addition):
     if addition is None:
@@ -100,8 +104,9 @@ class Defaults:
     cdrom = ''
     autoinstall = ''
     name = ''
+    type = 'linux-hvm'
+
     def __init__(self, max_memory=None, max_disk=None, **kws):
-        self.type = Type.get('linux-hvm')
         if max_memory is not None:
             self.memory = min(self.memory, max_memory)
         if max_disk is not None:
@@ -113,15 +118,15 @@ class Defaults:
 
 DEFAULT_HEADERS = {'Content-Type': 'text/html'}
 
-def error(op, user, fields, err, emsg):
+def error(op, username, fields, err, emsg):
     """Print an error page when a CodeError occurs"""
-    d = dict(op=op, user=user, errorMessage=str(err),
+    d = dict(op=op, user=username, errorMessage=str(err),
              stderr=emsg)
     return templates.error(searchList=[d])
 
-def invalidInput(op, user, fields, err, emsg):
+def invalidInput(op, username, fields, err, emsg):
     """Print an error page when an InvalidInput exception occurs"""
-    d = dict(op=op, user=user, err_field=err.err_field,
+    d = dict(op=op, user=username, err_field=err.err_field,
              err_value=str(err.err_value), stderr=emsg,
              errorMessage=str(err))
     return templates.invalid(searchList=[d])
@@ -136,49 +141,25 @@ def hasVnc(status):
             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.  Max 22 chars, alnum plus \'-\' and \'_\'.')
-    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(owner, memory, on=True)
-
-    disk_size = fields.getfirst('disk')
-    disk_size = validation.validDisk(owner, disk_size)
-
-    vm_type = fields.getfirst('vmtype')
-    vm_type = validation.validVmType(vm_type)
-
-    cdrom = fields.getfirst('cdrom')
-    if cdrom is not None and not CDROM.get(cdrom):
-        raise CodeError("Invalid cdrom type '%s'" % cdrom)
-
-    clone_from = fields.getfirst('clone_from')
-    if clone_from and clone_from != 'ice3':
-        raise CodeError("Invalid clone image '%s'" % clone_from)
-
-    return dict(contact=user, name=name, memory=memory, disk_size=disk_size,
-                owner=owner, machine_type=vm_type, cdrom=cdrom, clone_from=clone_from)
+def parseCreate(username, state, fields):
+    kws = dict([(kw, fields.getfirst(kw)) for kw in 'name owner memory disksize vmtype cdrom clone_from'.split()])
+    validate = validation.Validate(username, state, strict=True, **kws)
+    return dict(contact=username, name=validate.name, 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))
 
-def create(user, fields):
+def create(username, state, fields):
     """Handler for create requests."""
     try:
-        parsed_fields = parseCreate(user, fields)
-        machine = controls.createVm(**parsed_fields)
+        parsed_fields = parseCreate(username, state, fields)
+        machine = controls.createVm(username, state, **parsed_fields)
     except InvalidInput, err:
         pass
     else:
         err = None
-    g.clear() #Changed global state
-    d = getListDict(user)
+    state.clear() #Changed global state
+    d = getListDict(username, state)
     d['err'] = err
     if err:
         for field in fields.keys():
@@ -188,51 +169,57 @@ def create(user, fields):
     return templates.list(searchList=[d])
 
 
-def getListDict(user):
+def getListDict(username, state):
     """Gets the list of local variables used by list.tmpl."""
-    machines = g.machines
+    checkpoint.checkpoint('Starting')
+    machines = state.machines
     checkpoint.checkpoint('Got my machines')
     on = {}
     has_vnc = {}
-    on = g.uptimes
+    xmlist = state.xmlist
     checkpoint.checkpoint('Got uptimes')
+    can_clone = 'ice3' not in state.xmlist_raw
     for m in machines:
-        m.uptime = g.uptimes.get(m)
-        if not on[m]:
+        if m not in xmlist:
             has_vnc[m] = 'Off'
-        elif m.type.hvm:
-            has_vnc[m] = True
+            m.uptime = None
         else:
-            has_vnc[m] = "ParaVM"+helppopup("paravm_console")
-    max_memory = validation.maxMemory(user)
-    max_disk = validation.maxDisk(user)
+            m.uptime = xmlist[m]['uptime']
+            if xmlist[m]['console']:
+                has_vnc[m] = True
+            elif m.type.hvm:
+                has_vnc[m] = "WTF?"
+            else:
+                has_vnc[m] = "ParaVM"+helppopup("ParaVM Console")
+    max_memory = validation.maxMemory(username, state)
+    max_disk = validation.maxDisk(username)
     checkpoint.checkpoint('Got max mem/disk')
     defaults = Defaults(max_memory=max_memory,
                         max_disk=max_disk,
-                        owner=user,
+                        owner=username,
                         cdrom='gutsy-i386')
     checkpoint.checkpoint('Got defaults')
     def sortkey(machine):
-        return (machine.owner != user, machine.owner, machine.name)
+        return (machine.owner != username, machine.owner, machine.name)
     machines = sorted(machines, key=sortkey)
-    d = dict(user=user,
-             cant_add_vm=validation.cantAddVm(user),
+    d = dict(user=username,
+             cant_add_vm=validation.cantAddVm(username, state),
              max_memory=max_memory,
              max_disk=max_disk,
              defaults=defaults,
              machines=machines,
              has_vnc=has_vnc,
-             uptimes=g.uptimes)
+             can_clone=can_clone)
     return d
 
-def listVms(user, fields):
+def listVms(username, state, fields):
     """Handler for list requests."""
     checkpoint.checkpoint('Getting list dict')
-    d = getListDict(user)
+    d = getListDict(username, state)
     checkpoint.checkpoint('Got list dict')
     return templates.list(searchList=[d])
 
-def vnc(user, fields):
+def vnc(username, state, fields):
     """VNC applet page.
 
     Note that due to same-domain restrictions, the applet connects to
@@ -252,12 +239,12 @@ def vnc(user, fields):
     Remember to enable iptables!
     echo 1 > /proc/sys/net/ipv4/ip_forward
     """
-    machine = validation.testMachineId(user, fields.getfirst('machine_id'))
+    machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
 
     TOKEN_KEY = "0M6W0U1IXexThi5idy8mnkqPKEq1LtEnlK/pZSn0cDrN"
 
     data = {}
-    data["user"] = user
+    data["user"] = username
     data["machine"] = machine.name
     data["expires"] = time.time()+(5*60)
     pickled_data = cPickle.dumps(data)
@@ -270,11 +257,11 @@ def vnc(user, fields):
     status = controls.statusInfo(machine)
     has_vnc = hasVnc(status)
 
-    d = dict(user=user,
+    d = dict(user=username,
              on=status,
              has_vnc=has_vnc,
              machine=machine,
-             hostname=os.environ.get('SERVER_NAME', 'localhost'),
+             hostname=state.environ.get('SERVER_NAME', 'localhost'),
              authtoken=token)
     return templates.vnc(searchList=[d])
 
@@ -286,7 +273,7 @@ def getHostname(nic):
     if nic.hostname and '.' in nic.hostname:
         return nic.hostname
     elif nic.machine:
-        return nic.machine.name + '.servers.csail.mit.edu'
+        return nic.machine.name + '.xvm.mit.edu'
     else:
         return None
 
@@ -329,36 +316,36 @@ def getDiskInfo(data_dict, machine):
         data_dict['%s_size' % name] = "%0.1f GiB" % (disk.size / 1024.)
     return disk_fields
 
-def command(user, fields):
+def command(username, state, fields):
     """Handler for running commands like boot and delete on a VM."""
     back = fields.getfirst('back')
     try:
-        d = controls.commandResult(user, fields)
+        d = controls.commandResult(username, state, fields)
         if d['command'] == 'Delete VM':
             back = 'list'
     except InvalidInput, err:
         if not back:
             raise
-        #print >> sys.stderr, err
+        print >> sys.stderr, err
         result = err
     else:
         result = 'Success!'
         if not back:
             return templates.command(searchList=[d])
     if back == 'list':
-        g.clear() #Changed global state
-        d = getListDict(user)
+        state.clear() #Changed global state
+        d = getListDict(username, state)
         d['result'] = result
         return templates.list(searchList=[d])
     elif back == 'info':
-        machine = validation.testMachineId(user, fields.getfirst('machine_id'))
+        machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
         return ({'Status': '302',
                  'Location': '/info?machine_id=%d' % machine.machine_id},
                 "You shouldn't see this message.")
     else:
         raise InvalidInput('back', back, 'Not a known back page.')
 
-def modifyDict(user, fields):
+def modifyDict(username, state, fields):
     """Modify a machine as specified by CGI arguments.
 
     Return a list of local variables for modify.tmpl.
@@ -366,68 +353,65 @@ 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)
+        kws = dict([(kw, fields.getfirst(kw)) for kw in 'machine_id owner admin contact name memory vmtype disksize'.split()])
+        validate = validation.Validate(username, state, **kws)
+        machine = validate.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
+        if hasattr(validate, 'memory'):
+            machine.memory = validate.memory
 
-        vm_type = validation.validVmType(fields.getfirst('vmtype'))
-        if vm_type is not None:
-            machine.type = vm_type
+        if hasattr(validate, 'vmtype'):
+            machine.type = validate.vmtype
 
-        disksize = validation.testDisk(user, fields.getfirst('disk'))
-        if disksize is not None:
-            disksize = validation.validDisk(user, disksize, machine)
+        if hasattr(validate, 'disksize'):
+            disksize = validate.disksize
             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:
+        update_acl = False
+        if hasattr(validate, 'owner') and validate.owner != machine.owner:
+            machine.owner = validate.owner
+            update_acl = True
+        if hasattr(validate, 'name'):
             machine.name = name
-        if admin is not None:
-            machine.administrator = admin
-        if contact is not None:
-            machine.contact = contact
+        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)
+        if update_acl:
+            print >> sys.stderr, machine, machine.administrator
+            cache_acls.refreshMachine(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,
+    if hasattr(validate, 'name'):
+        controls.renameMachine(machine, oldname, validate.name)
+    return dict(user=username,
+                command="modify",
                 machine=machine)
 
-def modify(user, fields):
+def modify(username, state, fields):
     """Handler for modifying attributes of a machine."""
     try:
-        modify_dict = modifyDict(user, fields)
+        modify_dict = modifyDict(username, state, fields)
     except InvalidInput, err:
         result = None
-        machine = validation.testMachineId(user, fields.getfirst('machine_id'))
+        machine = validation.Validate(username, state, machine_id=fields.getfirst('machine_id')).machine
     else:
         machine = modify_dict['machine']
         result = 'Success!'
         err = None
-    info_dict = infoDict(user, machine)
+    info_dict = infoDict(username, machine)
     info_dict['err'] = err
     if err:
         for field in fields.keys():
@@ -436,50 +420,50 @@ def modify(user, fields):
     return templates.info(searchList=[info_dict])
 
 
-def helpHandler(user, fields):
+def helpHandler(username, state, fields):
     """Handler for help messages."""
     simple = fields.getfirst('simple')
     subjects = fields.getlist('subject')
 
-    help_mapping = dict(paravm_console="""
+    help_mapping = {'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 sipb-xen-console.mit.edu, using the name of the machine as your
+to console.xvm.mit.edu, using the name of the machine as your
 username.""",
-                        hvm_paravm="""
+                    '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="""
+                    'CPU Weight': """
 Don't ask us!  We're as mystified as you are.""",
-                        owner="""
+                    'Owner': """
 The owner field is used to determine <a
-href="help?subject=quotas">quotas</a>.  It must be the name of 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 who administers the LOCKER locker using the
 commands 'attach LOCKER; fs la /mit/LOCKER' on Athena.)  See also <a
-href="help?subject=administrator">administrator</a>.""",
-                        administrator="""
+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': """
 Quotas are determined on a per-locker basis.  Each locker may have a
 maximum of 512 megabytes of active ram, 50 gigabytes of disk, and 4
 active machines.""",
-                        console="""
+                    'Console': """
 <strong>Framebuffer:</strong> At a Linux boot prompt in your VM, try
 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.
 """
-                   )
+                    }
 
     if not subjects:
         subjects = sorted(help_mapping.keys())
 
-    d = dict(user=user,
+    d = dict(user=username,
              simple=simple,
              subjects=subjects,
              mapping=help_mapping)
@@ -487,11 +471,11 @@ console will suffer artifacts.
     return templates.help(searchList=[d])
 
 
-def badOperation(u, e):
+def badOperation(u, s, e):
     """Function called when accessing an unknown URI."""
     raise CodeError("Unknown operation")
 
-def infoDict(user, machine):
+def infoDict(username, state, machine):
     """Get the variables used by info.tmpl."""
     status = controls.statusInfo(machine)
     checkpoint.checkpoint('Getting status info')
@@ -521,7 +505,7 @@ def infoDict(user, machine):
                       ('memory', 'RAM'),
                       'DISK_INFO',
                       ('state', 'state (xen format)'),
-                      ('cpu_weight', 'CPU weight'+helppopup('cpu_weight')),
+                      ('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'),
@@ -562,15 +546,16 @@ def infoDict(user, machine):
     checkpoint.checkpoint('Got fields')
 
 
-    max_mem = validation.maxMemory(user, machine, False)
+    max_mem = validation.maxMemory(machine.owner, state, machine, False)
     checkpoint.checkpoint('Got mem')
-    max_disk = validation.maxDisk(user, machine)
+    max_disk = validation.maxDisk(machine.owner, machine)
     defaults = Defaults()
-    for name in 'machine_id name administrator owner memory contact type'.split():
+    for name in 'machine_id name 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.)
     checkpoint.checkpoint('Got defaults')
-    d = dict(user=user,
+    d = dict(user=username,
              on=status is not None,
              machine=machine,
              defaults=defaults,
@@ -579,24 +564,29 @@ def infoDict(user, machine):
              ram=machine.memory,
              max_mem=max_mem,
              max_disk=max_disk,
-             owner_help=helppopup("owner"),
+             owner_help=helppopup("Owner"),
              fields = fields)
     return d
 
-def info(user, fields):
+def info(username, state, fields):
     """Handler for info on a single VM."""
-    machine = validation.testMachineId(user, fields.getfirst('machine_id'))
-    d = infoDict(user, machine)
+    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):
+    """Information for unauth'd users."""
+    return templates.unauth(searchList=[{'simple' : True}])
+
 mapping = dict(list=listVms,
                vnc=vnc,
                command=command,
                modify=modify,
                info=info,
                create=create,
-               help=helpHandler)
+               help=helpHandler,
+               unauth=unauthFront)
 
 def printHeaders(headers):
     """Print a dictionary as HTTP headers."""
@@ -605,72 +595,98 @@ def printHeaders(headers):
     print
 
 
-def getUser():
+def getUser(environ):
     """Return the current user based on the SSL environment variables"""
-    username = os.environ['SSL_CLIENT_S_DN_Email'].split("@")[0]
-    return username
-
-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
+    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]
+
+class App:
+    def __init__(self, environ, start_response):
+        self.environ = environ
+        self.start = start_response
+
+        self.username = getUser(environ)
+        self.state = State(self.username)
+        self.state.environ = environ
+
+    def __iter__(self):
+        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']+'/')])
+            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)
+            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)
+            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))
+                    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())
+        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')
+    return App
+
+def main():
+    from flup.server.fcgi_fork import WSGIServer
+    WSGIServer(constructor()).run()
 
 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'
-
-    if os.getenv("SIPB_XEN_PROFILE"):
-        import profile
-        profile.run('main(operation, u, fields)', 'log-'+operation)
-    else:
-        main(operation, u, fields)
+    main()