--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/farolluz/cvrf.py	Tue Sep 23 15:19:14 2014 +0200
@@ -0,0 +1,1016 @@
+# -*- coding: utf-8 -*-
+#
+# Authors:
+# Benoît Allard <benoit.allard@greenbone.net>
+#
+# Copyright:
+# Copyright (C) 2014 Greenbone Networks GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""\
+Objects related to CVRF Documents
+"""
+
+class ValidationError(Exception): pass
+
+class CVRFPublisher(object):
+    TYPES = ('Vendor', 'Discoverer', 'Coordinator', 'User', 'Other')
+    def __init__(self, _type, vendorid=None):
+        self._type = _type
+        self._vendorid = vendorid
+        self._contact = None
+        self._authority = None
+
+    def setContact(self, contact):
+        self._contact = contact
+
+    def setAuthority(self, authority):
+        self._authority = authority
+
+    def validate(self):
+        if not self._type:
+            raise ValidationError('Document Publisher needs to have a type')
+        if self._type not in self.TYPES:
+            raise ValidationError('Document Publisher Type needs to be one of %s' % ', '.join(self.TYPES))
+
+    def __str__(self):
+        s = 'CVRFPublisher: %s' % self._type
+        if self._vendorid is not None:
+            s += ' ID: %s' % self._vendorid
+        if self._contact is not None:
+            s += ' Contact: "%s"' % self._contact
+        if self._authority is not None:
+            s += ' Authority: "%s"' % self._authority
+        return s
+
+
+class CVRFTrackingID(object):
+    def __init__(self, _id):
+        self._id = _id
+        self._aliases = []
+
+    def addAlias(self, alias):
+        self._aliases.append(alias)
+
+    def validate(self):
+        if not self._id:
+            raise ValidationError('Document ID cannot be left empty')
+
+    def __str__(self):
+        if self._aliases:
+            return "%s (%s)" % (self._id, ', '.join(self._aliases))
+        return self._id
+
+
+class CVRFTracking(object):
+    STATUSES = ('Draft', 'Interim', 'Final')
+    def __init__(self, _id, status, version, initial, current):
+        self._identification = _id
+        self._status = status
+        self._version = version
+        self._history = []
+        self._initialDate = initial
+        self._currentDate = current
+        self._generator = None
+
+    def addRevision(self, revision):
+        self._history.append(revision)
+
+    def setGenerator(self, generator):
+        self._generator = generator
+
+    def validate(self):
+        if self._identification is None:
+            raise ValidationError('Document Tracking needs to have an Identification')
+        self._identification.validate()
+        if not self._status:
+            raise ValidationError('Document status must be set')
+        if self._status not in self.STATUSES:
+            raise ValidationError('Document Status must be one of %s' % ', '.join(self.STATUSES))
+        if not self._version:
+            raise ValidationError('Document Version must be set')
+        if len(self._version) > 4:
+            raise ValidationError('Document Version must be comprised between `nn` and `nn.nn.nn.nn`')
+        if not self._history:
+            raise ValidationError('Document must have at least a revision')
+        if not self._initialDate:
+            raise ValidationError('Document must have an initial Release date set')
+        prev_date = self._initialDate
+        if self._history[0]._date < self._initialDate:
+            # Documents could have revisions before being released
+            prev_date = self._history[0]._date
+        prev = ()
+        for revision in self._history:
+            revision.validate()
+            if revision._number <= prev:
+                raise ValidationError('Revision numbers must always be increasing')
+            if revision._date < prev_date:
+                raise ValidationError('Revision dates must always be increasing')
+            prev = revision._number
+            prev_date = revision._date
+        if not self._currentDate:
+            raise ValidationError('Document must have a Current Release Date set')
+        if self._currentDate != self._history[-1]._date:
+            raise ValidationError('Current Release Date must be the same as the Date from the last Revision')
+        if self._initialDate > self._currentDate:
+            raise ValidationError('Initial date must not be after current Date')
+        if self._version != self._history[-1]._number:
+            raise ValidationError('Document version must be the same as the number of the last Revision')
+
+    def __str__(self):
+        s = "ID: %s" % self._identification
+        s += " Status: %s" % self._status
+        s += " v%s" % '.'.join('%d' % i for i in self._version)
+        s += " %d revisions" % len(self._history)
+        s += " Initial release: %s" % self._initialDate.isoformat()
+        return s
+
+
+class CVRFRevision(object):
+    def __init__(self, number, date, description):
+        self._number = number
+        self._date = date
+        self._description = description
+
+    def validate(self):
+        if not self._number:
+            raise ValidationError('A Revision must have a Number')
+        if not self._date:
+            raise ValidationError('A Revision must have a Date')
+        if not self._description:
+            raise ValidationError('A Revision must have a Description')
+
+class CVRFGenerator(object):
+    def __init__(self):
+        self._engine = None
+        self._date = None
+
+    def setEngine(self, engine):
+        self._engine = engine
+
+    def setDate(self, date):
+        self._date = date
+
+    def validate(self):
+        if (not self._engine) and (not self._date):
+            raise ValidationError('The Generator must have at least an Engine or a Date')
+
+
+class CVRFNote(object):
+    TYPES = ('General', 'Details', 'Description', 'Summary', 'FAQ',
+             'Legal Disclaimer', 'Other')
+    def __init__(self, _type, ordinal, note, title=None, audience=None):
+        self._type = _type
+        self._ordinal = ordinal
+        self._note = note
+        self._title = title
+        self._audience = audience
+
+    def getTitle(self):
+        """ returns something that can be used as a title """
+        if self._title is None:
+            return "%s (#%d)" % (self._type, self._ordinal)
+        return "%s (%s)" % (self._title, self._type)
+
+    def validate(self):
+        if not self._type:
+            raise ValidationError('A Note needs to have a Type set')
+        if self._type not in self.TYPES:
+            raise ValidationError('A Note Type needs to be one of %s' % ', '.join(self.TYPES))
+        if self._ordinal < 0:
+            raise ValidationError('A Note ordinal must be a positive integer')
+        if not self._note:
+            raise ValidationError('A Note must contain some text')
+
+
+    def __str__(self):
+        return self._note
+
+
+class CVRFReference(object):
+    TYPES = ('Self', 'External')
+    def __init__(self, url, description, _type=None):
+        self._url = url
+        self._description = description
+        self._type = _type
+
+    def validate(self):
+        if (self._type is not None) and (self._type not in self.TYPES):
+            raise ValidationError('If a Reference type is set, it mist be one of %s' % ', '.join(self.TYPES))
+        if not self._url:
+            raise ValidationError('A Reference must contain an URL')
+        if not self._description:
+            raise ValidationError('A Reference must contain a description')
+
+
+class CVRFAcknowledgment(object):
+    def __init__(self, name=None, organization=None, description=None,
+                 url=None):
+        self._name = name
+        self._organization = organization
+        self._description = description
+        self._url = url
+
+    def getTitle(self):
+        return "%s - %s" % (self._name, self._organization)
+
+    def validate(self):
+        if (not self._name) and (not self._organization) and (not self._description):
+            raise ValidationError('An Acknowledgment must have at least a Name, an Organization or a Description')
+
+
+class CVRFProductTree(object):
+    def __init__(self):
+        # All the branches, they can be order with their `parent` attribute
+        self._branches = []
+        self._groups = []
+        self._relationships = []
+        self._products = []
+        self._groups = []
+
+    def addBranch(self, branch):
+        parent = self.getBranch(branch.getParent().getPath())
+        if parent is self:
+            self._branches.append(branch)
+        else:
+            parent._childs.append(branch)
+
+    def addProduct(self, product):
+        if product not in self._products:
+            self._products.append(product)
+        if product._parent is not self:
+            product._parent._product = product
+
+    def addRelationship(self, rel):
+        self._relationships.append(rel)
+
+    def addGroup(self, group):
+        self._groups.append(group)
+
+    def getProductForID(self, productid):
+        for product in self._products:
+            if product._productid == productid:
+                return product
+        raise KeyError(productid)
+
+    def getGroupForID(self, groupid):
+        for group in self._groups:
+            if group._groupid == groupid:
+                return group
+        raise KeyError(groupid)
+
+    def decomposeProduct(self, productid):
+        """ In case of product defined as a relationship (product X installed
+        on OS Y), this gives us the following tuple: (OS, product). """
+        product = self.getProductForID(productid)
+        parent = product._parent
+        if parent is None:
+            return (None, None)
+        if not isinstance(parent, CVRFRelationship):
+            return (None, None)
+        relationtype = parent._relationtype.replace(' ', '').lower()
+        if relationtype not in ('defaultcomponentof', 'installedon'):
+            return (None, None)
+        return (
+            self.getProductForID(parent._relatestoproductreference),
+            self.getProductForID(parent._productreference)
+        )
+
+    def getBranch(self, path):
+        if len(path) == 0:
+            return self
+        branches = self._branches
+        node = None
+        for idx in path:
+            node = branches[idx]
+            branches = node._childs
+        return node
+
+    def getBranches(self):
+        for branch in self._branches:
+            yield branch
+            for sub_branch in branch.getBranches():
+                yield sub_branch
+
+    def getPath(self):
+        return ()
+
+    def getNameOfRelationship(self, relationship):
+        if relationship is None:
+            return ''
+        return ' '.join((self.getProductForID(relationship._productreference)._name, 'as',
+                relationship._relationtype.lower(),
+                self.getProductForID(relationship._relatestoproductreference)._name))
+
+    def getOrphanedBranches(self, product=None):
+        """ The branches that could accept `product` as Product Definition """
+        white_list = []
+        if product is not None:
+            white_list = [product._parent]
+        for branch in self.getBranches():
+            if (branch in white_list) or branch.isOrphaned():
+                yield branch
+
+    def getNotTerminalBranches(self, b2=None):
+        """\
+        The branches that could accept `b2` as new sub-branches
+        Note that b2 and all its sub-branches cannot be listed
+        """
+        black_list = []
+        if b2 is not None:
+            black_list = [b2] + list(b2.getBranches())
+        for branch in self.getBranches():
+            if branch in black_list:
+                continue
+            if branch._product is None:
+                yield branch
+
+    def getOrphanedRelationships(self, product=None):
+        """ The relationships that need a product defninition """
+        white_list = []
+        if product is not None:
+            white_list = [product.getCurrentRelationship()]
+        for i, relationship in enumerate(self._relationships):
+            if (relationship in white_list) or relationship.isOrphaned():
+                yield (i, relationship)
+
+    def nbProducts(self):
+        """ Amount of 'raw' Products """
+        return len([p for p in self._products if p._parent is self])
+
+    def validate(self):
+        for branch in self._branches:
+            branch.validate()
+        productids = set()
+        for product in self._products:
+            product.validate()
+            if product._productid in productids:
+                raise ValidationError('Each ProductID must be unique (%s)' % product._productid)
+            productids.add(product._productid)
+        for relationship in self._relationships:
+            relationship.validate()
+            for productid in (relationship._productreference,
+                              relationship._relatestoproductreference):
+                if productid not in productids:
+                    raise ValidationError('ProductID %s is unknown' % productid)
+        groupids = set()
+        for group in self._groups:
+            group.validate()
+            if group._groupid in groupids:
+                raise ValidationError('Duplicated GroupID: %s' % group._groupid)
+            groupids.add(group._groupid)
+            for productid in group._productids:
+                if productid not in productids:
+                    raise ValidationError('ProductID %s is unknown' % productid)
+        return productids, groupids
+
+    def __str__(self):
+        return 'Products: %s' % '\n'.join(str(p) for p in self._products)
+
+
+class CVRFProductBranch(object):
+    TYPES = ('Vendor', 'Product Family', 'Product Name', 'Product Version',
+             'Patch Level', 'Service Pack', 'Architecture', 'Language',
+             'Legacy', 'Specification')
+    def __init__(self, _type, name, parentbranch):
+        self._type = _type
+        self._name = name
+        self._parentbranch = parentbranch
+        self._childs = []
+        self._product = None
+
+    def getParent(self):
+        return self._parentbranch
+
+    def getPath(self, string=False):
+        """ return the path to that branch element as a tuple """
+        if self.isRoot():
+            for i, b in enumerate(self._parentbranch._branches):
+                if b is self:
+                    if string:
+                        return '%d' % i
+                    return (i, )
+        else:
+            for i, b in enumerate(self._parentbranch._childs):
+                if b is self:
+                    if string:
+                        return '/'.join([self._parentbranch.getPath(string), '%d' % i])
+                    return self._parentbranch.getPath(string) + (i,)
+        if string:
+            return ''
+        return ()
+
+    def getTree(self):
+        """ this returns a list of tuples (type, name) leading to here"""
+        if self.isRoot():
+            return [(self._type, self._name)]
+        return self._parentbranch.getTree() + [(self._type, self._name)]
+
+    def getName(self):
+        return ' / '.join("%s: %s" % (type_, name) for type_, name in self.getTree())
+
+    def getParentPath(self):
+        """ return as string the path to the parent """
+        return '/'.join('%s' % p for p in self.getPath()[:-1])
+
+    def isRoot(self):
+        return isinstance(self._parentbranch, CVRFProductTree)
+
+    def isOrphaned(self):
+        """ Has no childs and no product """
+        return len(self._childs) == 0 and (self._product is None)
+
+    def getBranches(self):
+        for branch in self._childs:
+            yield branch
+            for sub_branch in branch.getBranches():
+                yield sub_branch
+
+    def unlink(self):
+        """ Unset our _parent, and remove us from the _parent._childs """
+        if self.isRoot():
+            self.getParent()._branches.remove(self)
+        else:
+            self.getParent()._childs.remove(self)
+        self._parentbranch = None
+
+    def validate(self):
+        if not self._type:
+            raise ValidationError('A Branch must have a Type')
+        if self._type not in self.TYPES:
+            raise ValidationError('A Branch Type must be one of %s' % ', '.join(self.TYPES))
+        if not self._name:
+            raise ValidationError('A Branch must have a Name')
+        for branch in self._childs:
+            branch.validate()
+        if self.isOrphaned():
+            raise ValidationError('A Branch must have at least a sub-product or sub-branches')
+
+    def __str__(self):
+        return "%s: %s" % (self._type, self._name)
+
+
+class CVRFFullProductName(object):
+    def __init__(self, productid, name, parent, cpe=None):
+        self._productid = productid
+        self._name = name
+        # Can be None (directly under the tree), a ProductBranch, or a
+        # Relationship
+        self._parent = parent
+        self._cpe = cpe
+
+    def isRoot(self):
+        return isinstance(self._parent, CVRFProductTree)
+
+    def isRelationship(self):
+        return isinstance(self._parent, CVRFRelationship)
+
+    def getTree(self):
+        if not isinstance(self._parent, CVRFProductBranch):
+            return []
+        return self._parent.getTree()
+
+    def getParentPath(self):
+        if self.isRoot() or self.isRelationship():
+            return ''
+        return self._parent.getPath(True)
+
+    def getCurrentRelationship(self):
+        if self.isRelationship():
+            return self._parent
+        return None
+
+    def unlink(self):
+        """ Unset our _parent, and remove us from the _parent._childs """
+        if self.isRoot():
+            self._parent._products.remove(self)
+        else:
+            self._parent._product = None
+        self._parent = None
+
+    def validate(self):
+        if not self._productid:
+            raise ValidationError('A Product must have a ProductID')
+        if not self._name:
+            raise ValidationError('A Product must have a Name')
+
+    def __str__(self):
+        return "%s (%s)" % (self._productid, self._name)
+
+
+class CVRFRelationship(object):
+    TYPES = ('Default Component Of', 'Optional Component Of',
+             'External Component Of', 'Installed On', 'Installed With')
+    def __init__(self, productref, reltype, relatestoproductref):
+        self._productreference = productref
+        self._relationtype = reltype
+        self._relatestoproductreference = relatestoproductref
+        self._product = None
+
+    def getParent(self):
+        """ All parent element of a FullProductName should implement that
+        method """
+        return None
+
+    def isOrphaned(self):
+        return self._product is None
+
+    def validate(self):
+        if not self._productreference:
+            raise ValidationError('A Relationship must have a Product Reference')
+        if not self._relationtype:
+            raise ValidationError('A Relationship must have a Relation Type')
+        if self._relationtype not in self.TYPES:
+            raise ValidationError('Relation Type must be one of %s' % ', '.join(self.TYPES))
+        if not self._relatestoproductreference:
+            raise ValidationError('A Relationship must have a "Relates To product Reference"')
+        if self._productreference == self._relatestoproductreference:
+            raise ValidationError('A Relationship cannot reference twice the same Product')
+
+
+class CVRFGroup(object):
+    def __init__(self, groupid):
+        self._groupid = groupid
+        self._description = None
+        self._productids = []
+
+    def setDescription(self, description):
+        self._description = description
+
+    def addProductID(self, productid):
+        self._productids.append(productid)
+
+    def getTitle(self):
+        if self._description:
+            return "%s (%d products)" % (self._description, len(self._productids))
+        return "#%s (%d products)" % (self._groupid, len(self._productids))
+
+    def validate(self):
+        if not self._groupid:
+            raise ValidationError('A Group must have a GroupID')
+        if not self._productids or len(self._productids) < 2:
+            raise ValidationError('A Group must contain at least two products')
+
+
+class CVRFVulnerabilityID(object):
+    def __init__(self, systemname, value):
+        self._systemname = systemname
+        self._value = value
+
+    def validate(self):
+        if not self._systemname:
+            raise ValidationError('A Vulnerability ID must have a System Name')
+        if not self._value:
+            raise ValidationError('A Vulnerability ID must have a value')
+
+
+class CVRFVulnerability(object):
+    def __init__(self, ordinal):
+        self._ordinal = ordinal
+        self._title = None
+        self._id = None
+        self._notes = []
+        self._discoverydate = None
+        self._releasedate = None
+        self._involvements = []
+        self._cve = None
+        self._cwes = []
+        self._productstatuses = []
+        self._threats = []
+        self._cvsss = []
+        self._remediations = []
+        self._references = []
+        self._acknowledgments = []
+
+    def setTitle(self, title):
+        self._title = title
+
+    def setID(self, _id):
+        self._id = _id
+
+    def addNote(self, note):
+        self._notes.append(note)
+
+    def setDiscoveryDate(self, date):
+        self._discoverydate = date
+
+    def setReleaseDate(self, date):
+        self._releasedate = date
+
+    def addInvolvement(self, involvement):
+        self._involvements.append(involvement)
+
+    def setCVE(self, cve):
+        self._cve = cve
+
+    def addCWE(self, cwe):
+        self._cwes.append(cwe)
+
+    def addProductStatus(self, productstatus):
+        self._productstatuses.append(productstatus)
+
+    def addThreat(self, threat):
+        self._threats.append(threat)
+
+    def addCVSSSet(self, cvss_set):
+        self._cvsss.append(cvss_set)
+
+    def addRemediation(self, remediation):
+        self._remediations.append(remediation)
+
+    def addReference(self, ref):
+        self._references.append(ref)
+
+    def addAcknowledgment(self, ack):
+        self._acknowledgments.append(ack)
+
+    def getTitle(self):
+        """ return something that can be used as a title """
+        if self._title:
+            if self._id:
+                return "%s (%s)" % (self._title, self._id._value)
+            return self._title
+        if self._id:
+            return self._id._value
+        return "#%d" % self._ordinal
+
+    def validate(self, productids, groupids):
+        if not self._ordinal:
+            raise ValidationError('A Vulnerability must have an ordinal')
+        if self._id is not None:
+            self._id.validate()
+        ordinals = set()
+        for note in self._notes:
+            note.validate()
+            if note._ordinal in ordinals:
+                raise ValidationError('Vulnerability Note Ordinal %d duplicated' % note._ordinal)
+            ordinals.add(note._ordinal)
+        for involvement in self._involvements:
+            involvement.validate()
+        for cwe in self._cwes:
+            cwe.validate()
+        for status in self._productstatuses:
+            status.validate(productids)
+        for threat in self._threats:
+            threat.validate(productids, groupids)
+        for cvss in self._cvsss:
+            cvss.validate(productids)
+        for remediation in self._remediations:
+            remediation.validate(productids, groupids)
+        for reference in self._references:
+            reference.validate()
+        for acknowledgment in self._acknowledgments:
+            acknowledgment.validate()
+
+
+
+class CVRFInvolvement(object):
+    PARTIES = CVRFPublisher.TYPES
+    STATUSES = ('Open', 'Disputed', 'In Progress', 'Completed',
+                'Contact Attempted', 'Not Contacted')
+    def __init__(self, party, status):
+        self._party = party
+        self._status = status
+        self._description = None
+
+    def setDescription(self, description):
+        self._description = description
+
+    def getTitle(self):
+        return "From %s: %s" % (self._party, self._status)
+
+    def validate(self):
+        if not self._party:
+            raise ValidationError('An Involvement must have a Party')
+        if self._party not in self.PARTIES:
+            raise ValidationError("An Involvement's Party must be one of %s" % ', '.join(self.PARTIES))
+        if not self._status:
+            raise ValidationError('An Involvement must have a Status')
+        if self._status not in self.STATUSES:
+            raise ValidationError("An Involvement's Status must be one of %s" % ', '.join(self.STATUSES))
+
+
+class CVRFCWE(object):
+    def __init__(self, _id, value):
+        self._id = _id
+        self._value = value
+
+    def validate(self):
+        if not self._id:
+            raise ValidationError('A CWE must have an ID')
+        if not self._value:
+            raise ValidationError('A CWE must have a description')
+
+
+class CVRFProductStatus(object):
+    TYPES = ('First Affected', 'Known Affected', 'Known Not Affected',
+             'First Fixed', 'Fixed', 'Recommended', 'Last Affected')
+    def __init__(self, _type):
+        self._type = _type
+        self._productids = []
+
+    def addProductID(self, productid):
+        self._productids.append(productid)
+
+    def getTitle(self):
+        return "%s: %d products" % (self._type, len(self._productids))
+
+    def validate(self, productids):
+        if not self._type:
+            raise ValidationError('A Product Status must have a Type')
+        if self._type not in self.TYPES:
+            raise ValidationError("A Product Status' Type must be one of %s" % ', '.join(self.TYPES))
+        if len(self._productids) < 1:
+            raise ValidationError('A Product Status must mention at least one Product')
+        for productid in self._productids:
+            if productid not in productids:
+                raise ValidationError('Unknown ProductID: %s' % productid)
+
+
+class CVRFThreat(object):
+    TYPES = ('Impact', 'Exploit Status', 'Target Set')
+    def __init__(self, _type, description):
+        self._type = _type
+        self._description = description
+        self._date = None
+        self._productids = []
+        self._groupids = []
+
+    def setDate(self, date):
+        self._date = date
+
+    def addProductID(self, productid):
+        self._productids.append(productid)
+
+    def addGroupID(self, groupid):
+        self._groupids.append(groupid)
+
+    def getTitle(self):
+        return self._type
+
+    def validate(self, productids, groupids):
+        if not self._type:
+            raise ValidationError('A Threat must have a Type')
+        if self._type not in self.TYPES:
+            raise ValidationError("A Threat's Type must be one of %s" % ', '.join(self.TYPES))
+        if not self._description:
+            raise ValidationError('A Threat must have a Description')
+        for productid in self._productids:
+            if productid not in productids:
+                raise ValidationError('Unknown ProductID: %s' % productid)
+        for groupid in self._groupids:
+            if groupid not in groupids:
+                raise ValidationError('Unknown GroupID: %s' % groupid)
+
+
+class CVRFCVSSSet(object):
+    # To determine the base Score
+    VALUES = {'AV': {'L':0.395, 'A':0.646, 'N':1.0},
+              'AC': {'H':0.35, 'M':0.61 ,'L':0.71},
+              'Au': {'M':0.45, 'S':0.56, 'N':0.704},
+              'C': {'N':0.0, 'P':0.275, 'C':0.66},
+              'I': {'N':0.0, 'P':0.275, 'C':0.66},
+              'A': {'N':0.0, 'P':0.275, 'C':0.66}}
+    def __init__(self, basescore):
+        self._basescore = basescore
+        self._temporalscore = None
+        self._environmentalscore = None
+        self._vector = None
+        self.vector = None
+        self._productids = []
+
+    def setTemporalScore(self, tempscore):
+        self._temporalscore = tempscore
+
+    def setEnvironmentalScore(self, envscore):
+        self._environmentalscore = envscore
+
+    def setVector(self, vector):
+        self._vector = vector
+        if vector is None:
+            self.vector = vector
+            return
+        try:
+            self.vector = {}
+            for component in vector[:26].split('/'):
+                name, value = component.split(':')
+                self.vector[name] = self.VALUES[name][value]
+        except (KeyError, ValueError):
+            self.vector = None
+
+    def addProductID(self, productid):
+        self._productids.append(productid)
+
+    def baseScore(self):
+        v = self.vector # make an alias for shorter lines
+        exploitability = 20 * v['AV'] * v['AC'] * v['Au']
+        impact = 10.41 * (1 - (1 - v['C']) * (1 - v['I']) * (1 - v['A']))
+        def f(i): return 0 if i == 0 else 1.176
+        return ((0.6 * impact) + (0.4 * exploitability) - 1.5) * f(impact)
+
+    def validate(self, productids):
+        if not self._basescore:
+            raise ValidationError('A CVSS Score Set must have a Base Score')
+        if self._vector and not self.vector:
+            raise ValidationError('Syntax Error in CVSS Vector')
+        if abs(self._basescore - self.baseScore()) >= 0.05:
+            raise ValidationError('Inconsistency in CVSS Score Set between Vector (%f) and Base Score (%f)' % (self.baseScore(), self._basescore))
+        for productid in self._productids:
+            if productid not in productids:
+                raise ValidationError('Unknown ProductID: %s' % productid)
+
+
+class CVRFRemediation(object):
+    TYPES = ('Workaround', 'Mitigation', 'Vendor Fix', 'None Available',
+             'Will Not Fix')
+    def __init__(self, _type, description):
+        self._type = _type
+        self._description = description
+        self._date = None
+        self._entitlement = None
+        self._url = None
+        self._productids = []
+        self._groupids = []
+
+    def setDate(self, date):
+        self._date = date
+
+    def setEntitlement(self, entitlement):
+        self._entitlement = entitlement
+
+    def setURL(self, url):
+        self._url = url
+
+    def addProductID(self, productid):
+        self._productids.append(productid)
+
+    def addGroupID(self, groupid):
+        self._groupids.append(groupid)
+
+    def getTitle(self):
+        return self._type
+
+    def validate(self, productids, groupids):
+        if not self._type:
+            raise ValidationError('A Remediation must have a Type')
+        if self._type not in self.TYPES:
+            raise ValidationError("A Remediation's Type must be one of %s" % ', '.join(self.TYPES))
+        if not self._description:
+            raise ValidationError('A Remediation must have a Description')
+        for productid in self._productids:
+            if productid not in productids:
+                raise ValidationError('Unknown ProductID: %s' % productid)
+        for groupid in self._groupids:
+            if groupid not in groupids:
+                raise ValidationError('Unknown GroupID: %s' % groupid)
+
+class CVRF(object):
+    def __init__(self, title, _type):
+        self._title = title
+        self._type = _type
+        self._publisher = None
+        self._tracking = None
+        self._notes = []
+        self._distribution = None
+        self._references = []
+        self._acknowledgments = []
+        self._producttree = None
+        self._vulnerabilities = []
+
+    def setPublisher(self, publisher):
+        self._publisher = publisher
+
+    def setTracking(self, tracking):
+        self._tracking = tracking
+
+    def addNote(self, note):
+        self._notes.append(note)
+
+    def setDistribution(self, distribution):
+        self._distribution = distribution
+
+    def addReference(self, ref):
+        self._references.append(ref)
+
+    def addAcknowledgment(self, ack):
+        self._acknowledgments.append(ack)
+
+    def createProductTree(self):
+        """ only done if the element is there """
+        self._producttree = CVRFProductTree()
+        return self._producttree
+
+    def addVulnerability(self, vuln):
+        self._vulnerabilities.append(vuln)
+
+    def getProductForID(self, productid):
+        if self._producttree is None:
+            raise ValueError('No ProductTree')
+        return self._producttree.getProductForID(productid)
+
+    def getGroupForID(self, groupid):
+        if self._producttree is None:
+            raise ValueError('No ProductTree')
+        return self._producttree.getGroupForID(groupid)
+
+    def getHighestCVSS(self):
+        highestBaseScore = 0
+        highest = None
+        for vulnerability in self._vulnerabilities:
+            for cvss in vulnerability._cvsss:
+                if cvss._basescore <= highestBaseScore:
+                    continue
+                highestBaseScore = cvss._basescore
+                highest = cvss
+        return highest
+
+    def getProductList(self, type_='Fixed'):
+        products = set()
+        if type_ == 'Fixed':
+            # First try through the Remediation
+            for vulnerability in self._vulnerabilities:
+                for remediation in vulnerability._remediations:
+                    if remediation._type != 'Vendor Fix':
+                        continue
+                    for productid in remediation._productids:
+                        products.add(productid)
+                    for groupid in remediation._groupids:
+                        for productid in self.getGroupForID(groupid)._productids:
+                            products.add(productid)
+        if not products:
+            # If nothing there, try through the productstatuses
+            for vulnerability in self._vulnerabilities:
+                for status in vulnerability._productstatuses:
+                    if status._type != type_:
+                        continue
+                    for productid in status._productids:
+                        products.add(productid)
+        return set(self.getProductForID(p) for p in products)
+
+    def getNote(self, ordinal):
+        for note in self._notes:
+            if note._ordinal == ordinal:
+                return note
+        return None
+
+    def validate(self):
+        if not self._title:
+            raise ValidationError('Document Title cannot be empty')
+        if not self._type:
+            raise ValidationError('Document Type cannot be empty')
+        if self._publisher is None:
+            raise ValidationError('Document Publisher needs to be set')
+        self._publisher.validate()
+        if self._tracking is None:
+            raise ValidationError('Document Tracking needs to be set')
+        self._tracking.validate()
+        ordinals = set()
+        for note in self._notes:
+            note.validate()
+            if note._ordinal in ordinals:
+                raise ValidationError('Document Note ordinal %d is issued twice' % note._ordinal)
+            ordinals.add(note._ordinal)
+        for reference in self._references:
+            reference.validate()
+        for acknowledgment in self._acknowledgments:
+            acknowledgment.validate()
+        productids = set()
+        groupids = set()
+        if self._producttree:
+            productids, groupids = self._producttree.validate()
+        ordinals = set()
+        for vulnerability in self._vulnerabilities:
+            vulnerability.validate(productids, groupids)
+            if vulnerability._ordinal in ordinals:
+                raise ValidationError('Vulnerability ordinal %d is issued twice' % vulnerability._ordinal)
+            ordinals.add(vulnerability._ordinal)
+
+    def __str__(self):
+        s = [
+            'Title: %s' % self._title,
+            'Type: %s' % self._type,
+            'Publisher: %s' % self._publisher,
+            'tracking: %s' % self._tracking,
+            '%d Notes: %s' % (len(self._notes), ', '.join(
+                str(n) for n in self._notes))
+        ]
+        if self._distribution is not None:
+            s.append('Distribution: %s' % self._distribution)
+        s.extend([
+            '%d Acknowledgments' % len(self._acknowledgments),
+            'Products: %s' % self._producttree,
+        ])
+        return '\n'.join(s)