Updating svn-log.

svn-log

-#!/usr/bin/python2.4
+#!/usr/bin/python
 
 import os
+import re
 import subprocess
 import sys
 
-print 'content-type: text/xml'
-print ''
-
 try:
-        options = {}
-        query_string = os.environ['QUERY_STRING'].split('&')
-        for q in query_string:
-          opt = q.split('=')
-          options[opt[0]] = opt[1]
-
-        c = ['svn', 'log', '--xml', '-v', '-r', options['range'], options['url']]
-        sys.stdout.flush()
-        subprocess.call(c)
+  options = {}
+  query_string = os.environ['QUERY_STRING'].split('&')
+  for q in query_string:
+    opt = q.split('=')
+    options[opt[0]] = opt[1]
+  if ('range' not in options or 'url' not in options or
+      not (options['url'].startswith('http://src.chromium.org/svn/') or
+           options['url'].startswith('http://webrtc.googlecode.com/svn/')) or
+      not re.match(r'^(\d+):(\d+)$', options['range'])):
+    print 'Content-Type: text/html'
+    print ''
+    print ''
+    sys.exit(1)
+  c = ['svn', 'log', '--xml', '-v', '-r', options['range'], options['url']]
+  print 'Content-Type: text/xml'
+  print ''
+  sys.stdout.flush()
+  subprocess.call(c)
 except Exception, e:
-        print e
-
+  sys.stderr.write(e)