sipb-xen-www depends on AFS and python-flup

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

diff --git a/code/validation.py b/code/validation.py
index 9189764..f6e4a59 100644 (file)
--- a/code/validation.py
+++ b/code/validation.py
@@ -4,8 +4,9 @@ import cache_acls
 import getafsgroups
 import re
 import string
 import getafsgroups
 import re
 import string

-from sipb_xen_database import Machine, NIC
-from webcommon import InvalidInput, g
+from invirt.database import Machine, NIC, Type, Disk, CDROM, Autoinstall
+from invirt.config import structs as config
+from webcommon import InvalidInput

 
 MAX_MEMORY_TOTAL = 512
 MAX_MEMORY_SINGLE = 256
 
 MAX_MEMORY_TOTAL = 512
 MAX_MEMORY_SINGLE = 256

@@ -16,22 +17,73 @@ MIN_DISK_SINGLE = 0.1
 MAX_VMS_TOTAL = 10
 MAX_VMS_ACTIVE = 4
 
 MAX_VMS_TOTAL = 10
 MAX_VMS_ACTIVE = 4
 

-def getMachinesByOwner(user, machine=None):
+class Validate:
+    def __init__(self, username, state, machine_id=None, name=None, description=None, owner=None,
+                 admin=None, contact=None, memory=None, disksize=None,
+                 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.
+        created_new = (machine_id is None)
+
+        if strict:
+            if name is None:
+                raise InvalidInput('name', name, "You must provide a machine name.")
+            if description is None:
+                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:
+            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
+        admin = testAdmin(username, admin, machine)
+        if admin is not None:
+            self.admin = admin
+        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:
+            self.disksize = validDisk(self.owner, state, disksize, machine)
+        if vmtype is not None:
+            self.vmtype = validVmType(vmtype)
+        if cdrom is not None:
+            if not CDROM.get(cdrom):
+                raise CodeError("Invalid cdrom type '%s'" % cdrom)
+            self.cdrom = cdrom
+        if autoinstall is not None:
+            self.autoinstall = Autoinstall.get(autoinstall)
+
+
+def getMachinesByOwner(owner, machine=None):

     """Return the machines owned by the same as a machine.
     """Return the machines owned by the same as a machine.

-    
+

     If the machine is None, return the machines owned by the same
     user.
     """
     if machine:
         owner = machine.owner
     If the machine is None, return the machines owned by the same
     user.
     """
     if machine:
         owner = machine.owner

-    else:
-        owner = user

     return Machine.select_by(owner=owner)
 
     return Machine.select_by(owner=owner)
 

-def maxMemory(user, machine=None, on=True):
+def maxMemory(owner, g, machine=None, on=True):

     """Return the maximum memory for a machine or a user.
 
     """Return the maximum memory for a machine or a user.
 

-    If machine is None, return the memory available for a new 
+    If machine is None, return the memory available for a new

     machine.  Else, return the maximum that machine can have.
 
     on is whether the machine should be turned on.  If false, the max
     machine.  Else, return the maximum that machine can have.
 
     on is whether the machine should be turned on.  If false, the max

@@ -43,20 +95,28 @@ def maxMemory(user, machine=None, on=True):
         return machine.memory
     if not on:
         return MAX_MEMORY_SINGLE
         return machine.memory
     if not on:
         return MAX_MEMORY_SINGLE

-    machines = getMachinesByOwner(user, machine)
-    active_machines = [x for x in machines if g.uptimes.get(x)]
+    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)
 
     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, machine)
-    disk_usage = sum([sum([y.size for y in x.disks])
-                      for x in machines if x != machine])
+def maxDisk(owner, machine=None):
+    """Return the maximum disk that a machine can reach.
+
+    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 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.)
 
     return min(MAX_DISK_SINGLE, MAX_DISK_TOTAL-disk_usage/1024.)
 

-def cantAddVm(user):
-    machines = getMachinesByOwner(user)
-    active_machines = [x for x in machines if g.uptimes.get(x)]
+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:
         return 'You have too many VMs to create a new one.'
     if len(active_machines) >= MAX_VMS_ACTIVE:
     if len(machines) >= MAX_VMS_TOTAL:
         return 'You have too many VMs to create a new one.'
     if len(active_machines) >= MAX_VMS_ACTIVE:

@@ -64,15 +124,10 @@ def cantAddVm(user):
                 'To create more, turn one off.')
     return False
 
                 'To create more, turn one off.')
     return False
 

-def validAddVm(user):
-    reason = cantAddVm(user)
-    if reason:
-        raise InvalidInput('create', True, reason)
-    return True
-
-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"""

@@ -82,16 +137,16 @@ def validMachineName(name):
     """Check that name is valid for a machine name"""
     if not name:
         return False
     """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
     return True
 
         return False
     for x in name:
         if x not in charset:
             return False
     return True
 

-def validMemory(user, memory, machine=None, on=True):
-    """Parse and validate limits for memory for a given user and machine.
+def validMemory(owner, g, memory, machine=None, on=True):
+    """Parse and validate limits for memory for a given owner and machine.

 
     on is whether the memory must be valid after the machine is
     switched on.
 
     on is whether the memory must be valid after the machine is
     switched on.

@@ -101,21 +156,21 @@ def validMemory(user, memory, machine=None, on=True):
         if memory < MIN_MEMORY_SINGLE:
             raise ValueError
     except ValueError:
         if memory < MIN_MEMORY_SINGLE:
             raise ValueError
     except ValueError:

-        raise InvalidInput('memory', memory, 
+        raise InvalidInput('memory', memory,

                            "Minimum %s MiB" % MIN_MEMORY_SINGLE)
                            "Minimum %s MiB" % MIN_MEMORY_SINGLE)

-    if memory > maxMemory(user, machine, on):
+    max_val = maxMemory(owner, g, machine, on)
+    if not g.isadmin and memory > max_val:

         raise InvalidInput('memory', memory,
         raise InvalidInput('memory', memory,

-                           'Maximum %s MiB for %s' % (maxMemory(user, machine),
-                                                      user))
+                           'Maximum %s MiB for %s' % (max_val, owner))

     return memory
 
     return memory
 

-def validDisk(user, disk, machine=None):
-    """Parse and validate limits for disk for a given user and machine."""
+def validDisk(owner, g, disk, machine=None):
+    """Parse and validate limits for disk for a given owner and machine."""

     try:
         disk = float(disk)
     try:
         disk = float(disk)

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

             raise InvalidInput('disk', disk,
             raise InvalidInput('disk', disk,

-                               "Maximum %s G" % maxDisk(user, machine))
+                               "Maximum %s G" % maxDisk(owner, machine))

         disk = int(disk * 1024)
         if disk < MIN_DISK_SINGLE * 1024:
             raise ValueError
         disk = int(disk * 1024)
         if disk < MIN_DISK_SINGLE * 1024:
             raise ValueError

@@ -123,14 +178,22 @@ def validDisk(user, disk, machine=None):
         raise InvalidInput('disk', disk,
                            "Minimum %s GiB" % MIN_DISK_SINGLE)
     return disk
         raise InvalidInput('disk', disk,
                            "Minimum %s GiB" % MIN_DISK_SINGLE)
     return disk

-            
-def testMachineId(user, machine_id, exists=True):
+
+def validVmType(vm_type):
+    if vm_type is None:
+        return None
+    t = Type.get(vm_type)
+    if t is None:
+        raise CodeError("Invalid vm type '%s'"  % vm_type)
+    return t
+
+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.
     """
     if machine_id is None:
     """Parse, validate and check authorization for a given user and machine.
 
     If exists is False, don't check that it exists.
     """
     if machine_id is None:

-        raise InvalidInput('machine_id', machine_id, 
+        raise InvalidInput('machine_id', machine_id,

                            "Must specify a machine ID.")
     try:
         machine_id = int(machine_id)
                            "Must specify a machine ID.")
     try:
         machine_id = int(machine_id)

@@ -139,7 +202,7 @@ def testMachineId(user, machine_id, exists=True):
     machine = Machine.get(machine_id)
     if exists and machine is None:
         raise InvalidInput('machine_id', machine_id, "Does not exist.")
     machine = Machine.get(machine_id)
     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

@@ -150,7 +213,9 @@ def testAdmin(user, admin, machine):
     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).  XXX is modifying this a good idea?
     """

-    if admin in (None, machine.administrator):
+    if admin is None:
+        return None
+    if machine is not None and admin == machine.administrator:

         return None
     if admin == user:
         return admin
         return None
     if admin == user:
         return admin

@@ -158,18 +223,26 @@ def testAdmin(user, admin, machine):
         if cache_acls.isUser(admin):
             return admin
         admin = 'system:' + admin
         if cache_acls.isUser(admin):
             return admin
         admin = 'system:' + admin

-    if getafsgroups.checkAfsGroup(user, admin, 'athena.mit.edu'):
-        return admin
-    #XXX Should we require that user is in cache_acls.expandName(admin)?
+    try:
+        if user in getafsgroups.getAfsGroupMembers(admin, config.authz[0].cell):
+            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
     return admin

-    
+

 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 or machine is not None and owner == machine.owner:
+    if owner == user:

         return owner
         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")
     try:
     if owner is None:
         raise InvalidInput('owner', owner, "Owner must be specified")
     try:

@@ -181,7 +254,7 @@ def testOwner(user, owner, machine=None):
     return owner
 
 def testContact(user, contact, machine=None):
     return owner
 
 def testContact(user, contact, machine=None):

-    if contact in (None, machine.contact):
+    if contact is None or (machine is not None and contact == machine.contact):

         return None
     if not re.match("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$", contact, re.I):
         raise InvalidInput('contact', contact, "Not a valid email.")
         return None
     if not re.match("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$", contact, re.I):
         raise InvalidInput('contact', contact, "Not a valid email.")

@@ -191,12 +264,22 @@ def testDisk(user, disksize, machine=None):
     return disksize
 
 def testName(user, name, machine=None):
     return disksize
 
 def testName(user, name, machine=None):

-    if name in (None, machine.name):
+    if name is None:
+        return None
+    name = name.lower()
+    if machine is not None and name == machine.name:

         return None
     if not Machine.select_by(name=name):
         return None
     if not Machine.select_by(name=name):

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

         return name
     raise InvalidInput('name', name, "Name is already taken.")
 
         return name
     raise InvalidInput('name', name, "Name is already taken.")
 

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