make the reactor an auditor, clean up docstring

Author: Richard Jones

detectors/fileauditor.py

@@ -0,0 +1,41 @@
+
+def eml_to_mht(db, cl, nodeid, newvalues):
+    '''This reactor fires whenever a new file entity is created.
+
+    If the file is of type message/rfc822, we tack onthe extension .eml.
+
+    The reason for this is that Microsoft Internet Explorer will not open
+    things with a .eml attachment, as they deem it 'unsafe'. Worse yet,
+    they'll just give you an incomprehensible error message. For more 
+    information, please see: 
+
+    http://support.microsoft.com/default.aspx?scid=kb;EN-US;825803
+
+    Their suggested work around is (excerpt):
+
+     WORKAROUND
+
+     To work around this behavior, rename the .EML file that the URL
+     links to so that it has a .MHT file name extension, and then update
+     the URL to reflect the change to the file name. To do this:
+
+     1. In Windows Explorer, locate and then select the .EML file that
+        the URL links.
+     2. Right-click the .EML file, and then click Rename.
+     3. Change the file name so that the .EML file uses a .MHT file name
+        extension, and then press ENTER.
+     4. Updated the URL that links to the file to reflect the new file
+        name extension.
+
+    So... we do that. :)'''
+    if newalues.get('type', '').lower() == "message/rfc822":
+        if newvalues.has_key('name'):
+            newvalues['name'] = 'email.mht'
+        name = newvalues['name']
+        if name.endswith('.eml'):
+            name = name[:-4]
+        newvalues['name'] = name + '.mht'
+
+def init(db):
+    db.file.react('create', eml_to_mht)
+