Update tlslite to 0.4.6.

third_party/tlslite/patches/parse_chain.patch

-diff -aurb tlslite-0.3.8/tlslite/X509.py chromium/tlslite/X509.py
---- tlslite-0.3.8/tlslite/X509.py       Fri Mar 19 18:43:19 2004
-+++ chromium/tlslite/X509.py    Wed Feb 29 11:53:54 2012
-@@ -91,6 +91,7 @@
- 
-         #Create a public key instance
-         self.publicKey = _createPublicRSAKey(n, e)
-+        return self
- 
-     def getFingerprint(self):
-         """Get the hex-encoded fingerprint of this certificate.
-diff -aurb tlslite-0.3.8/tlslite/X509CertChain.py chromium/tlslite/X509CertChain.py
---- tlslite-0.3.8/tlslite/X509CertChain.py      Fri Mar 19 18:49:58 2004
-+++ chromium/tlslite/X509CertChain.py   Wed Feb 29 11:53:42 2012
-@@ -1,6 +1,7 @@
- """Class representing an X.509 certificate chain."""
- 
- from utils import cryptomath
-+from X509 import X509
- 
- class X509CertChain:
-     """This class represents a chain of X.509 certificates.
-@@ -23,6 +24,66 @@
-             self.x509List = x509List
-         else:
-             self.x509List = []
-+
-+    def parseChain(self, s):
-+        """Parse a PEM-encoded X.509 certificate file chain file.
-+
-+        @type s: str
-+        @param s: A PEM-encoded (eg: Base64) X.509 certificate file, with every
-+        certificate wrapped within "-----BEGIN CERTIFICATE-----" and
-+        "-----END CERTIFICATE-----" tags). Extraneous data outside such tags,
-+        such as human readable representations, will be ignored.
-+        """
-+
-+        class PEMIterator(object):
-+            """Simple iterator over PEM-encoded certificates within a string.
-+
-+            @type data: string
-+            @ivar data: A string containing PEM-encoded (Base64) certificates,
-+            with every certificate wrapped within "-----BEGIN CERTIFICATE-----"
-+            and "-----END CERTIFICATE-----" tags). Extraneous data outside such
-+            tags, such as human readable representations, will be ignored.
-+
-+            @type index: integer
-+            @ivar index: The current offset within data to begin iterating from.
-+            """
-+
-+            _CERTIFICATE_HEADER = "----BEGIN CERTIFICATE-----"
-+            """The PEM encoding block header for X.509 certificates."""
-+
-+            _CERTIFICATE_FOOTER = "----END CERTIFICATE-----"
-+            """The PEM encoding block footer for X.509 certificates."""
-+
-+            def __init__(self, s):
-+                self.data = s
-+                self.index = 0
-+
-+            def __iter__(self):
-+                return self
-+
-+            def next(self):
-+                """Iterates and returns the next L{tlslite.X509.X509}
-+                certificate in data.
-+
-+                @rtype tlslite.X509.X509
-+                """
-+
-+                self.index = self.data.find(self._CERTIFICATE_HEADER,
-+                                            self.index)
-+                if self.index == -1:
-+                    raise StopIteration
-+                end = self.data.find(self._CERTIFICATE_FOOTER, self.index)
-+                if end == -1:
-+                    raise StopIteration
-+
-+                certStr = self.data[self.index+len(self._CERTIFICATE_HEADER) :
-+                                    end]
-+                self.index = end + len(self._CERTIFICATE_FOOTER)
-+                bytes = cryptomath.base64ToBytes(certStr)
-+                return X509().parseBinary(bytes)
-+
-+        self.x509List = list(PEMIterator(s))
-+        return self
- 
-     def getNumCerts(self):
-         """Get the number of certificates in this chain.