Add failing test case for double cookie setting#62
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aeneasr wants to merge 2 commits intojustinas:masterfrom
Open
Add failing test case for double cookie setting#62aeneasr wants to merge 2 commits intojustinas:masterfrom
aeneasr wants to merge 2 commits intojustinas:masterfrom
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ping @justinas |
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Mar 9, 2021
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Sorry for sleeping on this! Just a few comments from my side.
| defer cmMutex.Unlock() | ||
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| ctx, ok := contextMap[req] | ||
| if !ok { |
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I think it would be okay to assume context already exists here, like Reason() does.
Lines 87 to 90 in 4d86df7
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| ctx, ok := contextMap[req] | ||
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| if !ok { |
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Same here, could probably assume that when ctxWasSent is called, the context is already present.
| n.RegenerateToken(w, r) | ||
| })) | ||
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| r := &http.Request{Method: "GET", URL: &url.URL{ |
| } | ||
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| func TestNoDoubleCookie(t *testing.T) { | ||
| var n *CSRFHandler |
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Nitpick: separate declaration not needed, just do n := New(...)?
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Thank you for the review, I'll try to address them as soon as I have a couple of free minutes! |
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The problem is that
ServeHTTPdetects that the cookie is missing. So it callsRegenerateToken()to create a new token. Because the downstream handler doesn't know that (and really has no way of currently knowing), it also callsRegenerateToken(). This then adds a second cookie to the HTTP response, causing this behavior.See #61