def gethttpdigestauth()

in src/request.py [0:0]
63 lines of code
2 McCabe index (conditional complexity)

    def gethttpdigestauth(self, si, wwwauthorize=None):

        # Check the nonce cache to see if we've used this user before, or if the nonce is more than 5 minutes old
        user = [self.user, si.user][self.user == ""]
        pswd = [self.pswd, si.pswd][self.pswd == ""]
        details = None
        if user in self.manager.digestCache and self.manager.digestCache[user]["max-nonce-time"] > time.time():
            details = self.manager.digestCache[user]
        else:
            # Redo digest auth from scratch to get a new nonce etc
            http = SmartHTTPConnection(si.host, si.port, si.ssl, si.afunix)
            try:
                puri = list(urlparse.urlparse(self.getURI(si)))
                puri[2] = urllib.quote(puri[2])
                quri = urlparse.urlunparse(puri)
                http.request("OPTIONS", quri)

                response = http.getresponse()

            finally:
                http.close()

            if response.status == 401:

                wwwauthorize = response.msg.getheaders("WWW-Authenticate")
                for item in wwwauthorize:
                    if not item.lower().startswith("digest "):
                        continue
                    wwwauthorize = item[7:]

                    def unq(s):
                        if s[0] == s[-1] == '"':
                            return s[1:-1]
                        return s
                    parts = wwwauthorize.split(',')

                    details = {}

                    for (k, v) in [p.split('=', 1) for p in parts]:
                        details[k.strip()] = unq(v.strip())

                    details["max-nonce-time"] = time.time() + 600
                    self.manager.digestCache[user] = details
                    break

        if details:
            if details.get('qop'):
                if self.nc.get(details.get('nonce')) is None:
                    self.nc[details.get('nonce')] = 1
                else:
                    self.nc[details.get('nonce')] += 1
                details['nc'] = "%08x" % self.nc[details.get('nonce')]
                if details.get('cnonce') is None:
                    details['cnonce'] = "D4AAE4FF-ADA1-4149-BFE2-B506F9264318"

            digest = calcResponse(
                calcHA1(details.get('algorithm', 'md5'), user, details.get('realm'), pswd, details.get('nonce'), details.get('cnonce')),
                details.get('algorithm', 'md5'), details.get('nonce'), details.get('nc'), details.get('cnonce'), details.get('qop'), self.method, self.getURI(si), None
            )

            if details.get('qop'):
                response = (
                    'Digest username="%s", realm="%s", '
                    'nonce="%s", uri="%s", '
                    'response=%s, algorithm=%s, cnonce="%s", qop=%s, nc=%s' %
                    (user, details.get('realm'), details.get('nonce'), self.getURI(si), digest, details.get('algorithm', 'md5'), details.get('cnonce'), details.get('qop'), details.get('nc'),)
                )
            else:
                response = (
                    'Digest username="%s", realm="%s", '
                    'nonce="%s", uri="%s", '
                    'response=%s, algorithm=%s' %
                    (user, details.get('realm'), details.get('nonce'), self.getURI(si), digest, details.get('algorithm'),)
                )

            return response
        else:
            return ""