[Python-checkins] r55851 - tracker/instances/python-dev/detectors/spamcheck.py

[skip.montanaro]

Author: skip.montanaro
Date: Sun Jun 10 14:11:18 2007
New Revision: 55851

Added:
   tracker/instances/python-dev/detectors/spamcheck.py   (contents, props changed)
Log:
*completely untested* spam auditor

Added: tracker/instances/python-dev/detectors/spamcheck.py
==============================================================================
--- (empty file)
+++ tracker/instances/python-dev/detectors/spamcheck.py	Sun Jun 10 14:11:18 2007
@@ -0,0 +1,40 @@
+"""
+spamcheck.py - Auditor that consults a SpamBayes server and scores all form
+submissions.  Submissions which are deemed to be spam are rejected.  For the
+time being only reject submissions which are assumed to be spam (score >=
+SPAM_CUTOFF).  Once a reasonable body of ham and spam submissions have been
+built up you can consider whether to also reject unsure submissions (score >
+HAM_CUTOFF).  The current settings make it less likely that you'll reject
+valid submissions at the expense of manual checks to correct spammy items
+which snuck by the screen.
+"""
+
+# These must match the xmlrpc_{host,port,path} settings in the SpamBayes
+# server config.
+HOST = "localhost"
+PORT = "8001"
+PATH = "/sbrpc"
+
+# These must match the {ham,spam}_cutoff setting in the SpamBayes server
+# config.
+HAM_CUTOFF = 0.2
+SPAM_CUTOFF = 0.85
+
+import xmlrpclib
+
+from roundup.exceptions import Reject
+
+def check_spam(db, cl, nodeid, newvalues):
+    uri = "http://%s:%s%s" % (HOST, PORT, PATH)
+    server = xmlrpclb.ServerProxy(uri, verbose=False)
+    try:
+        prob = server.score(newvalues, [], {})
+    except (socket.error, xmlrpclib.Fault):
+        pass
+    else:
+        if prob >= CUTOFF:
+            raise Reject
+
+def init(db):
+    db.file.audit('create', check_spam)
+    db.file.audit('set', check_spam)