Initial checkin of Debian tools, as downloaded from svn://svn.debian.org/svn/secure-testing

svn path=/; revision=1

1 files changed, 135 insertions, 0 deletions

diff --git a/lib/python/nvd.py b/lib/python/nvd.py
new file mode 100644
index 0000000..87b6d14
--- /dev/null
+++ b/lib/python/nvd.py
@@ -0,0 +1,135 @@
+# nvd.py -- simplistic NVD parser
+# Copyright (C) 2005 Florian Weimer <fw@deneb.enyo.de>
+# 
+# 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+"""This module parses the XML files provided by the
+National Vulnerability Database (NVD) <http://nvd.nist.gov/>
+"""
+
+import xml.sax
+import xml.sax.handler
+
+class _Parser(xml.sax.handler.ContentHandler):
+    """Parser helper class."""
+
+    def __init__(self):
+        self.result = []
+        self.start_dispatcher = {}
+        for x in ('entry', 'local', 'range', 'remote', 'user_init',
+                  'avail', 'conf', 'int', 'sec_prot'):
+             self.start_dispatcher[x] = getattr(self, 'TAG_' + x)
+        self.path = []
+
+    def _noop(*args):
+        pass
+
+    def startElement(self, name, attrs):
+        self.path.append((name, attrs))
+        self.start_dispatcher.get(name, self._noop)(name, attrs)
+
+    def TAG_entry(self, name, attrs):
+        self.name = attrs['name'].encode('utf-8')
+        self.published = attrs['published'].encode('utf-8')
+        self.severity = attrs.get('severity', u'').encode('utf-8')
+        self.discovered = attrs.get('discovered', u'').encode('utf-8')
+
+        self.cve_desc = ""
+        self.range_local = self.range_remote = self.range_user_init = None
+
+        self.loss_avail = self.loss_conf = self.loss_int \
+            = self.loss_sec_prot_user = self.loss_sec_prot_admin \
+            = self.loss_sec_prot_other = 0
+
+    def TAG_range(self, name, attrs):
+        self.range_local = self.range_remote = self.range_user_init = 0
+
+    def TAG_local(self, name, attrs):
+        self.range_local = 1
+    def TAG_remote(self, name, attrs):
+        self.range_remote = 1
+    def TAG_user_init(self, name, attrs):
+        self.range_user_init = 1
+    def TAG_loss_types(self, name, attrs):
+        self.clear_loss()
+    def TAG_avail(self, name, attrs):
+        self.loss_avail = 1
+    def TAG_conf(self, name, attrs):
+        self.loss_conf = 1
+    def TAG_int(self, name, attrs):
+        self.loss_int = 1
+    def TAG_sec_prot(self, name, attrs):
+        if attrs.has_key('user'):
+            self.loss_sec_prot_user = 1
+        if attrs.has_key('admin'):
+            self.loss_sec_prot_admin = 1
+        if attrs.has_key('other'):
+            self.loss_sec_prot_other = 1
+            
+    def endElement(self, name):
+        if name == 'entry':
+            # FIXME: normalize CAN to CVE.  Should go away soon.
+            name = self.name
+            if name[0:4] == 'CAN-':
+                name = 'CVE-' + name[4:]
+            self.result.append((name,
+                                self.cve_desc,
+                                self.discovered,
+                                self.published,
+                                self.severity,
+                                self.range_local,
+                                self.range_remote,
+                                self.range_user_init,
+                                self.loss_avail,
+                                self.loss_conf,
+                                self.loss_int,
+                                self.loss_sec_prot_user,
+                                self.loss_sec_prot_admin,
+                                self.loss_sec_prot_other))
+        del self.path[-1]
+
+    def characters(self, content):
+        (name, attrs) = self.path[-1]
+        if name == 'descript' and attrs['source'] == 'cve':
+            self.cve_desc += content
+
+def parse(file):
+    """Parses the indicated file object.  Returns a list of tuples,
+    containing the following elements:
+
+    - CVE name
+    - discovery data (can be empty)
+    - publication date
+    - severity (can be empty)
+    - local range flag
+    - remote range flag
+    - availability loss type flag
+    - confidentiality loss type flag
+    - integrity loss type flag
+    - security protection (user) loss type flag
+    - security protection (admin) loss type flag
+    - security protection (other) loss type flag
+    """
+    parser = xml.sax.make_parser()
+    parser.setFeature(xml.sax.handler.feature_namespaces, 0)
+    p = _Parser()
+    parser.setContentHandler(p)
+    parser.parse(file)
+    return p.result
+
+if __name__ == "__main__":
+    import sys
+    for name in sys.argv[1:]:
+        parse(file(name))