For example, we pick random website from who uses webpy page who also
uses analytics and add non latin tracking params:
http://frinki.com/?utm_source=feedburner&utm_medium=twitter&utm_campaign=Feed:%20gradoskop%20%28Градоскоп%29&utm_content=Twitter
If you visit this link in Firefox (even Firefox 4), then analytics
will set up incorrect __utmz cookie in unicode, and the second and
further refreshes will show server error.
I fixed the problem by removing this buggy cookie in custom
internalerror (it tries to do so only one time to prevent redirect
loop):
def myinternalerror():
try:
web.cookies()
except CookieError:
if not "cookie_err" in web.input():
web.setcookie("__utmz", None, domain=web.ctx.host)
raise web.seeother(web.changequery(cookie_err=1))
return web.internalerror(render.site.e500())
Who's problem is it:
1. google analytics setting incorrect cookie
2. firefox letting javascript set incorrect cookie and thus sending
incorrect request
3. webpy
On Mar 23, 12:09 am, andrei <[email protected]> wrote:
> Hi, my web app fails with incorrect cookie set by google analytics
> javascript.
> My question is how I can capture this exception, and issue redirect back
> clearing the buggy cookie?
>
> Here is traceback:
>
> File "/home/dw0rm/lib/python2.6/web/application.py", line 282, in wsgi
> result = self.handle_with_processors()
> File "/home/dw0rm/lib/python2.6/web/application.py", line 252, in
> handle_with_processors
> return process(self.processors)
> File "/home/dw0rm/lib/python2.6/web/application.py", line 249, in process
> raise self.internalerror()
> File "/home/dw0rm/lib/python2.6/web/application.py", line 473, in
> internalerror
> return debugerror.debugerror()
> File "/home/dw0rm/lib/python2.6/web/debugerror.py", line 305, in
> debugerror
> return web._InternalError(djangoerror())
> File "/home/dw0rm/lib/python2.6/web/debugerror.py", line 295, in
> djangoerror
> return t(exception_type, exception_value, frames)
> File "/home/dw0rm/lib/python2.6/web/template.py", line 879, in __call__
> return BaseTemplate.__call__(self, *a, **kw)
> File "/home/dw0rm/lib/python2.6/web/template.py", line 806, in __call__
> return self.t(*a, **kw)
> File "/home/dw0rm/lib/python2.6/web/debugerror.pyo", line 196, in
> __template__
>
> File "/home/dw0rm/lib/python2.6/web/webapi.py", line 316, in cookies
> cookie.load(ctx.env.get('HTTP_COOKIE', ''))
> File "/usr/local/lib/python2.6/Cookie.py", line 625, in load
> self.__ParseString(rawdata)
> File "/usr/local/lib/python2.6/Cookie.py", line 658, in __ParseString
> self.__set(K, rval, cval)
> File "/usr/local/lib/python2.6/Cookie.py", line 578, in __set
> M.set(key, real_value, coded_value)
> File "/usr/local/lib/python2.6/Cookie.py", line 455, in set
> raise CookieError("Illegal key value: %s" % key)
> CookieError: Illegal key value: )|utmcmd
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