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Gregory Szorc's avatar
Gregory Szorc authored
A common exploit in web applications that access paths is to insert
path separator strings like ".." to try to get the server to serve up
files it shouldn't.

We have code for detecting this in staticfile(). A subsequent commit
will need to perform this test as well. Since this is security code,
let's factor the check so we don't have to reinvent the wheel.
62f9679d
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