c7a2bf51b7
ensure that path of the file we're going to open is actually inside our log root. If not return a 400. escape dates in the regex so they are easier to pass around, unencoded spaces kind of suck for that. catch the possible IOError of openning a file that doesn't exist, be nice and give people a 404 in that case. move the content negotiation into a function, for readability Change-Id: I334e1ac0419cd140c6af35c78634a2d7c05dcf01