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One more: if you look closer at the accepted patch by CMLENZ over @ t.e.o., you will find:
 if self.req.headers_in.has_key('Cookie'):
- self.incookie.load(self.req.headers_in['Cookie'])
+ #self.incookie.load(self.req.headers_in['Cookie'])
+ cookie = self.req.headers_in['Cookie']
+ old_set = self.incookie._BaseCookie__set
+ bad_cookies = []
+ def safe_set(key, real_value, coded_value):
+ try:
+ old_set(key, real_value, coded_value)
+ except CookieError:
+ bad_cookies.append(key)
+ dict.__setitem__(self.incookie, key, None)
+ # override Cookie.set to ignore cookies with parse errors
+ self.incookie._BaseCookie__set = safe_set
+ # load the cookie values
+ self.incookie.load(cookie)
+ # clean up the Cookie.set overriding
+ self.incookie._BaseCookie__set = old_set
+ for key in bad_cookies:
+ del self.incookie[key]
+
which will eventually delete all cookies that do not match the original production rule.
Besides that, the original poster of the issue forgot to properly limit the cookies set by the other site to just a single host path, so these invalid cookies got routed to the trac instance running on some different host.