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overleaf/services/web/app/coffee/Features/Security/SessionInvalidator.coffee

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Settings = require("settings-sharelatex")
redis = require("redis-sharelatex")
rclient = redis.createClient(Settings.redis.web)
crypto = require("crypto")
async = require("async")
module.exports =
_getEmailKey : (email)->
hash = crypto.createHash("md5").update(email).digest("hex")
return "e_sess:#{hash}"
tracksession:(sessionId, email, callback = ->)->
session_lookup_key = @_getEmailKey(email)
rclient.set session_lookup_key, sessionId, callback
invalidateSession:(email, callback = ->)->
session_lookup_key = @_getEmailKey(email)
rclient.get session_lookup_key, (err, sessionId)->
async.series [
(cb)-> rclient.del sessionId, cb
(cb)-> rclient.del session_lookup_key, cb
], callback