Added outage notice to website

[invirt/packages/invirt-web.git] / code / validation.py

diff --git a/code/validation.py b/code/validation.py
old mode 100644 (file)
new mode 100755 (executable)
index db3a365..d288a69
--- a/code/validation.py
+++ b/code/validation.py
@@ -4,22 +4,19 @@ import cache_acls
 import getafsgroups
 import re
 import string
 import getafsgroups
 import re
 import string

-from sipb_xen_database import Machine, NIC, Type, Disk
-from webcommon import InvalidInput
+import dns.resolver
+from invirt import authz
+from invirt.database import Machine, NIC, Type, Disk, CDROM, Autoinstall, Owner
+from invirt.config import structs as config
+from invirt.common import InvalidInput, CodeError

 
 

-MAX_MEMORY_TOTAL = 512
-MAX_MEMORY_SINGLE = 256

 MIN_MEMORY_SINGLE = 16
 MIN_MEMORY_SINGLE = 16

-MAX_DISK_TOTAL = 50
-MAX_DISK_SINGLE = 50

 MIN_DISK_SINGLE = 0.1
 MIN_DISK_SINGLE = 0.1

-MAX_VMS_TOTAL = 10
-MAX_VMS_ACTIVE = 4

 
 class Validate:
 
 class Validate:

-    def __init__(self, username, state, machine_id=None, name=None, owner=None,
+    def __init__(self, username, state, machine_id=None, name=None, description=None, owner=None,

                  admin=None, contact=None, memory=None, disksize=None,
                  admin=None, contact=None, memory=None, disksize=None,

-                 vmtype=None, cdrom=None, clone_from=None, strict=False):
+                 vmtype=None, cdrom=None, autoinstall=None, strict=False):

         # XXX Successive quota checks aren't a good idea, since you
         # can't necessarily change the locker and disk size at the
         # same time.
         # XXX Successive quota checks aren't a good idea, since you
         # can't necessarily change the locker and disk size at the
         # same time.

@@ -28,42 +25,45 @@ class Validate:
         if strict:
             if name is None:
                 raise InvalidInput('name', name, "You must provide a machine name.")
         if strict:
             if name is None:
                 raise InvalidInput('name', name, "You must provide a machine name.")

+            if description is None or description.strip() == '':
+                raise InvalidInput('description', description, "You must provide a description.")

             if memory is None:
                 raise InvalidInput('memory', memory, "You must provide a memory size.")
             if disksize is None:
                 raise InvalidInput('disk', disksize, "You must provide a disk size.")
 
         if machine_id is not None:
             if memory is None:
                 raise InvalidInput('memory', memory, "You must provide a memory size.")
             if disksize is None:
                 raise InvalidInput('disk', disksize, "You must provide a disk size.")
 
         if machine_id is not None:

-            self.machine = testMachineId(username, machine_id)
+            self.machine = testMachineId(username, state, machine_id)

         machine = getattr(self, 'machine', None)
 
         owner = testOwner(username, owner, machine)
         if owner is not None:
             self.owner = owner
         machine = getattr(self, 'machine', None)
 
         owner = testOwner(username, owner, machine)
         if owner is not None:
             self.owner = owner

-        admin = testAdmin(username, admin, machine)
-        if admin is not None:
-            self.admin = admin
+        self.admin = testAdmin(username, admin, machine)

         contact = testContact(username, contact, machine)
         if contact is not None:
             self.contact = contact
         name = testName(username, name, machine)
         if name is not None:
             self.name = name
         contact = testContact(username, contact, machine)
         if contact is not None:
             self.contact = contact
         name = testName(username, name, machine)
         if name is not None:
             self.name = name

+        description = testDescription(username, description, machine)
+        if description is not None:
+            self.description = description

         if memory is not None:
             self.memory = validMemory(self.owner, state, memory, machine,
                                       on=not created_new)
         if disksize is not None:
         if memory is not None:
             self.memory = validMemory(self.owner, state, memory, machine,
                                       on=not created_new)
         if disksize is not None:

-            self.disksize = validDisk(self.owner, disksize, machine)
+            self.disksize = validDisk(self.owner, state, disksize, machine)

         if vmtype is not None:
             self.vmtype = validVmType(vmtype)
         if cdrom is not None:
         if vmtype is not None:
             self.vmtype = validVmType(vmtype)
         if cdrom is not None:

-            if not CDROM.get(cdrom):
+            if not CDROM.query().get(cdrom):

                 raise CodeError("Invalid cdrom type '%s'" % cdrom)
             self.cdrom = cdrom
                 raise CodeError("Invalid cdrom type '%s'" % cdrom)
             self.cdrom = cdrom

-        if clone_from is not None:
-            if clone_from not in ('ice3', ):
-                raise CodeError("Invalid clone image '%s'" % clone_from)
-            self.clone_from = clone_from
+        if autoinstall is not None:
+            #raise InvalidInput('autoinstall', 'install',
+            #                   "The autoinstaller has been temporarily disabled")
+            self.autoinstall = Autoinstall.query().get(autoinstall)

 
 
 def getMachinesByOwner(owner, machine=None):
 
 
 def getMachinesByOwner(owner, machine=None):

@@ -74,7 +74,7 @@ def getMachinesByOwner(owner, machine=None):
     """
     if machine:
         owner = machine.owner
     """
     if machine:
         owner = machine.owner

-    return Machine.select_by(owner=owner)
+    return Machine.query().filter_by(owner=owner)

 
 def maxMemory(owner, g, machine=None, on=True):
     """Return the maximum memory for a machine or a user.
 
 def maxMemory(owner, g, machine=None, on=True):
     """Return the maximum memory for a machine or a user.

@@ -86,15 +86,14 @@ def maxMemory(owner, g, machine=None, on=True):
     memory for the machine to change to, if it is left off, is
     returned.
     """
     memory for the machine to change to, if it is left off, is
     returned.
     """

-    if machine is not None and machine.memory > MAX_MEMORY_SINGLE:
-        # If they've been blessed, let them have it
-        return machine.memory
+    (quota_total, quota_single) = Owner.getMemoryQuotas(machine.owner if machine else owner)
+

     if not on:
     if not on:

-        return MAX_MEMORY_SINGLE
+        return quota_single

     machines = getMachinesByOwner(owner, machine)
     active_machines = [m for m in machines if m.name in g.xmlist_raw]
     mem_usage = sum([x.memory for x in active_machines if x != machine])
     machines = getMachinesByOwner(owner, machine)
     active_machines = [m for m in machines if m.name in g.xmlist_raw]
     mem_usage = sum([x.memory for x in active_machines if x != machine])

-    return min(MAX_MEMORY_SINGLE, MAX_MEMORY_TOTAL-mem_usage)
+    return min(quota_single, quota_total-mem_usage)

 
 def maxDisk(owner, machine=None):
     """Return the maximum disk that a machine can reach.
 
 def maxDisk(owner, machine=None):
     """Return the maximum disk that a machine can reach.

@@ -102,38 +101,43 @@ def maxDisk(owner, machine=None):
     If machine is None, the maximum disk for a new machine. Otherwise,
     return the maximum that a given machine can be changed to.
     """
     If machine is None, the maximum disk for a new machine. Otherwise,
     return the maximum that a given machine can be changed to.
     """

+    (quota_total, quota_single) = Owner.getDiskQuotas(machine.owner if machine else owner)
+

     if machine is not None:
         machine_id = machine.machine_id
     else:
         machine_id = None
     if machine is not None:
         machine_id = machine.machine_id
     else:
         machine_id = None

-    disk_usage = Disk.query().filter_by(Disk.c.machine_id != machine_id,
-                                        owner=owner).sum(Disk.c.size) or 0
-    return min(MAX_DISK_SINGLE, MAX_DISK_TOTAL-disk_usage/1024.)
+    disk_usage = Disk.query().filter(Disk.c.machine_id != machine_id).\
+                     join('machine').\
+                     filter_by(owner=owner).sum(Disk.c.size) or 0
+    return min(quota_single, quota_total-disk_usage/1024.)

 
 def cantAddVm(owner, g):
     machines = getMachinesByOwner(owner)
     active_machines = [m for m in machines if m.name in g.xmlist_raw]
 
 def cantAddVm(owner, g):
     machines = getMachinesByOwner(owner)
     active_machines = [m for m in machines if m.name in g.xmlist_raw]

-    if len(machines) >= MAX_VMS_TOTAL:
+    (quota_total, quota_active) = Owner.getVMQuotas(owner)
+    if machines.count() >= quota_total:

         return 'You have too many VMs to create a new one.'
         return 'You have too many VMs to create a new one.'

-    if len(active_machines) >= MAX_VMS_ACTIVE:
+    if len(active_machines) >= quota_active:

         return ('You already have the maximum number of VMs turned on.  '
                 'To create more, turn one off.')
     return False
 
         return ('You already have the maximum number of VMs turned on.  '
                 'To create more, turn one off.')
     return False
 

-def haveAccess(user, machine):
+def haveAccess(user, state, machine):

     """Return whether a user has administrative access to a machine"""
     """Return whether a user has administrative access to a machine"""

-    return user in cache_acls.accessList(machine)
+    return (user in cache_acls.accessList(machine)
+            or (machine.adminable and state.isadmin))

 
 def owns(user, machine):
     """Return whether a user owns a machine"""
 
 def owns(user, machine):
     """Return whether a user owns a machine"""

-    return user in expandLocker(machine.owner)
+    return user in authz.expandOwner(machine.owner)

 
 def validMachineName(name):
     """Check that name is valid for a machine name"""
     if not name:
         return False
 
 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:
+    charset = string.lowercase + string.digits + '-'
+    if '-' in (name[0], name[-1]) or len(name) > 63:

         return False
     for x in name:
         if x not in charset:
         return False
     for x in name:
         if x not in charset:

@@ -154,16 +158,16 @@ def validMemory(owner, g, memory, machine=None, on=True):
         raise InvalidInput('memory', memory,
                            "Minimum %s MiB" % MIN_MEMORY_SINGLE)
     max_val = maxMemory(owner, g, machine, on)
         raise InvalidInput('memory', memory,
                            "Minimum %s MiB" % MIN_MEMORY_SINGLE)
     max_val = maxMemory(owner, g, machine, on)

-    if memory > max_val:
+    if not g.isadmin and memory > max_val:

         raise InvalidInput('memory', memory,
                            'Maximum %s MiB for %s' % (max_val, owner))
     return memory
 
         raise InvalidInput('memory', memory,
                            'Maximum %s MiB for %s' % (max_val, owner))
     return memory
 

-def validDisk(owner, disk, machine=None):
+def validDisk(owner, g, disk, machine=None):

     """Parse and validate limits for disk for a given owner and machine."""
     try:
         disk = float(disk)
     """Parse and validate limits for disk for a given owner and machine."""
     try:
         disk = float(disk)

-        if disk > maxDisk(owner, machine):
+        if not g.isadmin and disk > maxDisk(owner, machine):

             raise InvalidInput('disk', disk,
                                "Maximum %s G" % maxDisk(owner, machine))
         disk = int(disk * 1024)
             raise InvalidInput('disk', disk,
                                "Maximum %s G" % maxDisk(owner, machine))
         disk = int(disk * 1024)

@@ -177,12 +181,12 @@ def validDisk(owner, disk, machine=None):
 def validVmType(vm_type):
     if vm_type is None:
         return None
 def validVmType(vm_type):
     if vm_type is None:
         return None

-    t = Type.get(vm_type)
+    t = Type.query().get(vm_type)

     if t is None:
         raise CodeError("Invalid vm type '%s'"  % vm_type)
     return t
 
     if t is None:
         raise CodeError("Invalid vm type '%s'"  % vm_type)
     return t
 

-def testMachineId(user, machine_id, exists=True):
+def testMachineId(user, state, machine_id, exists=True):

     """Parse, validate and check authorization for a given user and machine.
 
     If exists is False, don't check that it exists.
     """Parse, validate and check authorization for a given user and machine.
 
     If exists is False, don't check that it exists.

@@ -194,10 +198,10 @@ def testMachineId(user, machine_id, exists=True):
         machine_id = int(machine_id)
     except ValueError:
         raise InvalidInput('machine_id', machine_id, "Must be an integer.")
         machine_id = int(machine_id)
     except ValueError:
         raise InvalidInput('machine_id', machine_id, "Must be an integer.")

-    machine = Machine.get(machine_id)
+    machine = Machine.query().get(machine_id)

     if exists and machine is None:
         raise InvalidInput('machine_id', machine_id, "Does not exist.")
     if exists and machine is None:
         raise InvalidInput('machine_id', machine_id, "Does not exist.")

-    if machine is not None and not haveAccess(user, machine):
+    if machine is not None and not haveAccess(user, state, machine):

         raise InvalidInput('machine_id', machine_id,
                            "You do not have access to this machine.")
     return machine
         raise InvalidInput('machine_id', machine_id,
                            "You do not have access to this machine.")
     return machine

@@ -205,43 +209,39 @@ def testMachineId(user, machine_id, exists=True):
 def testAdmin(user, admin, machine):
     """Determine whether a user can set the admin of a machine to this value.
 
 def testAdmin(user, admin, machine):
     """Determine whether a user can set the admin of a machine to this value.
 

-    Return the value to set the admin field to (possibly 'system:' +
-    admin).  XXX is modifying this a good idea?
+    Return the value to set the admin field to (possibly 'system:' + admin).

     """
     if admin is None:
         return None
     if machine is not None and admin == machine.administrator:
     """
     if admin is None:
         return None
     if machine is not None and admin == machine.administrator:

-        return None
+        return admin

     if admin == user:
         return admin
     if admin == user:
         return admin

+    # we do not require that the user be in the admin group;
+    # just that it is a non-empty set
+    if authz.expandAdmin(admin):
+        return admin

     if ':' not in admin:
     if ':' not in admin:

-        if cache_acls.isUser(admin):
-            return admin
-        admin = 'system:' + admin
-    try:
-        if user in getafsgroups.getAfsGroupMembers(admin, 'athena.mit.edu'):
-            return admin
-    except getafsgroups.AfsProcessError, e:
-        errmsg = str(e)
-        if errmsg.startswith("pts: User or group doesn't exist"):
-            errmsg = 'The group "%s" does not exist.' % admin
-        raise InvalidInput('administrator', admin, errmsg)
-    #XXX Should we require that user is in the admin group?
-    return admin
+        if authz.expandAdmin('system:' + admin):
+            return 'system:' + admin
+        errmsg = 'No user "%s" or non-empty group "system:%s" found.' % (admin, admin)
+    else:
+        errmsg = 'No non-empty group "%s" found.' % (admin,)
+    raise InvalidInput('administrator', admin, errmsg)

 
 def testOwner(user, owner, machine=None):
     """Determine whether a user can set the owner of a machine to this value.
 
     If machine is None, this is the owner of a new machine.
     """
 
 def testOwner(user, owner, machine=None):
     """Determine whether a user can set the owner of a machine to this value.
 
     If machine is None, this is the owner of a new machine.
     """

-    if owner == user:
-        return owner

     if machine is not None and owner in (machine.owner, None):
         return machine.owner
     if owner is None:
         raise InvalidInput('owner', owner, "Owner must be specified")
     if machine is not None and owner in (machine.owner, None):
         return machine.owner
     if owner is None:
         raise InvalidInput('owner', owner, "Owner must be specified")

+    if '@' in owner:
+        raise InvalidInput('owner', owner, "No cross-realm Hesiod lockers allowed")

     try:
     try:

-        if user not in cache_acls.expandLocker(owner):
+        if user not in authz.expandOwner(owner):

             raise InvalidInput('owner', owner, 'You do not have access to the '
                                + owner + ' locker')
     except getafsgroups.AfsProcessError, e:
             raise InvalidInput('owner', owner, 'You do not have access to the '
                                + owner + ' locker')
     except getafsgroups.AfsProcessError, e:

@@ -255,19 +255,44 @@ def testContact(user, contact, machine=None):
         raise InvalidInput('contact', contact, "Not a valid email.")
     return contact
 
         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 is None:
         return None
 def testName(user, name, machine=None):
     if name is None:
         return None

+    name = name.lower()

     if machine is not None and name == machine.name:
         return None
     if machine is not None and name == machine.name:
         return None

-    if not Machine.select_by(name=name):
+    try:
+        hostname = '%s.%s.' % (name, config.dns.domains[0])
+        resolver = dns.resolver.Resolver()
+        resolver.nameservers = ['127.0.0.1']
+        try:
+            resolver.query(hostname, 'A')
+        except dns.resolver.NoAnswer, e:
+            # If we can get the TXT record, then we can verify it's
+            # reserved. If this lookup fails, let it bubble up and be
+            # dealt with
+            answer = resolver.query(hostname, 'TXT')
+            txt = answer[0].strings[0]
+            if txt.startswith('reserved'):
+                raise InvalidInput('name', name, 'The name you have requested has been %s. For more information, contact us at %s' % (txt, config.dns.contact))
+
+        # If the hostname didn't exist, it would have thrown an
+        # exception by now - error out
+        raise InvalidInput('name', name, 'Name is already taken.')
+    except dns.resolver.NXDOMAIN, e:

         if not validMachineName(name):
         if not validMachineName(name):

-            raise InvalidInput('name', name, 'You must provide a machine name.  Max 22 chars, alnum plus \'-\' and \'_\'.')
+            raise InvalidInput('name', name, 'You must provide a machine name.  Max 63 chars, alnum plus \'-\', does not begin or end with \'-\'.')

         return name
         return name

-    raise InvalidInput('name', name, "Name is already taken.")
+    except InvalidInput:
+        raise
+    except:
+        # Any other error is a validation failure
+        raise InvalidInput('name', name, 'We were unable to verify that this name is available. If you believe this is in error, please contact us at %s' % config.dns.contact)
+
+def testDescription(user, description, machine=None):
+    if description is None or description.strip() == '':
+        return None
+    return description.strip()

 
 def testHostname(user, hostname, machine):
     for nic in machine.nics:
 
 def testHostname(user, hostname, machine):
     for nic in machine.nics: