From cc28226b4afcd1803c9790e8ba238e2125ce0129 Mon Sep 17 00:00:00 2001
From: Helmut Grohne <helmut@subdivi.de>
Date: Sun, 24 Jul 2011 22:43:26 +0200
Subject: add more assertions for types of passed parameters

---
 wsgitools/digest.py  | 7 +++++++
 wsgitools/filters.py | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/wsgitools/digest.py b/wsgitools/digest.py
index 4b7dd96..86de17e 100644
--- a/wsgitools/digest.py
+++ b/wsgitools/digest.py
@@ -61,6 +61,7 @@ def parse_digest_response(data, ret=None):
     ...     print("ValueError")
     ValueError
     """
+    assert isinstance(data, str)
     if ret is None:
         ret = {}
     data = data.strip()
@@ -100,6 +101,7 @@ class AbstractTokenGenerator:
         """
         @type realm: str
         """
+        assert isinstance(realm, str)
         self.realm = realm
 
     def __call__(self, username, algo="md5"):
@@ -126,6 +128,8 @@ class AbstractTokenGenerator:
         @param environ: ignored
         @rtype: bool
         """
+        assert isinstance(username, str)
+        assert isinstance(password, str)
         token = md5("%s:%s:%s" % (username, self.realm, password)).hexdigest()
         return token == self(username)
 
@@ -147,6 +151,7 @@ class AuthTokenGenerator(AbstractTokenGenerator):
         self.getpass = getpass
 
     def __call__(self, username, algo="md5"):
+        assert isinstance(username, str)
         assert algo.lower() in ["md5", "md5-sess"]
         password = self.getpass(username)
         if password is None:
@@ -180,6 +185,7 @@ class HtdigestTokenGenerator(AbstractTokenGenerator):
         @raises IOError:
         @raises ValueError:
         """
+        assert isinstance(htdigestfile, str)
         self.users = {}
         for line in file(htdigestfile):
             parts = line.rstrip("\n").split(":")
@@ -204,6 +210,7 @@ class UpdatingHtdigestTokenGenerator(HtdigestTokenGenerator):
     for changes on each invocation.
     """
     def __init__(self, realm, htdigestfile, ignoreparseerrors=False):
+        assert isinstance(htdigestfile, str)
         try:
             self.statcache = os.stat(htdigestfile)
         except OSError, err:
diff --git a/wsgitools/filters.py b/wsgitools/filters.py
index 1c3fadc..e455cbe 100644
--- a/wsgitools/filters.py
+++ b/wsgitools/filters.py
@@ -238,6 +238,7 @@ class RequestLogWSGIFilter(BaseWSGIFilter):
         """
         BaseWSGIFilter.__init__(self)
         assert hasattr(log, "write")
+        assert hasattr(log, "flush") or not flush
         self.log = log
         self.flush = flush
         self.remote = "?"
@@ -279,6 +280,7 @@ class RequestLogWSGIFilter(BaseWSGIFilter):
         @type data: str
         @rtype: str
         """
+        assert isinstance(data, str)
         self.length += len(data)
         return data
     def handle_close(self):
-- 
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