// GetNewToken returns a JSON object which contains a new NONCE with its expiration time and the number of allowed usages.
func GetNewToken(c *gin.Context) {
failed := true
// Allow up to ten attempts to generate an access key.
for iter := 0; iter < 10; iter++ {
if token, err := randutil.AlphaStringRange(10, 10); err == nil {
if _, inCache := perishableCache.Get(token); inCache {
// If this token is already in our cache, we don't even check if it's in Redis,
// and just ask for a new one.
continue
}
if ok, _ := getTokenHits(PerishableRedisKey(token), RedisCnx); !ok {
// We calculate the expire time prior to actually setting it so the client
// can switch to another Nonce before it actually expires.
expires := time.Now().Add(NonceTTL)
perishableCache.Set(token, &PerishableInfo{0, expires}, NonceTTL)
setToken(PerishableRedisKey(token), NonceTTL, RedisCnx)
c.JSON(200, gin.H{"token": token, "expires": expires.Format(time.RFC3339), "limit": NonceLimit})
failed = false
break
}
}
}
if failed {
// Could not generate a valid token.
c.JSON(503, Status503.JSON())
}
}
func makeRandomUserToken() (username string, tokenString string) {
token := jwt.New(jwt.GetSigningMethod("HS256"))
username, err := randutil.AlphaStringRange(5, 10)
errPanic(err, "Cannot random string, wtf?")
token.Claims["username"] = username
token.Claims["secret"] = time.Now().Add(time.Hour * 72).Unix()
tokenString, err = token.SignedString([]byte(mySigningKey))
errPanic(err, "Cannot sign string, wtf?")
return
}
// Generate returns a new value for a token according to the definition.
func (t URLToken) Generate() (r string) {
if t.Choices != "" {
r, _ = randutil.ChoiceString(strings.Split(t.Choices, "|"))
}
switch t.Pattern {
case "alpha":
r, _ = randutil.StringRange(t.Min, t.Max, randutil.Alphabet)
case "alphanum":
r, _ = randutil.AlphaStringRange(t.Min, t.Max)
case "num":
rInt, _ := randutil.IntRange(t.Min, t.Max)
r = strconv.FormatInt(int64(rInt), 10)
}
return
}
func NewAnalyticsEvent() *AnalyticsJSON {
randToken, _ := randutil.AlphaStringRange(10, 10)
return &AnalyticsJSON{IP: "127.0.0.1", KissMetric: randToken[0:7], Session: "session_" + randToken[5:10],
UserAgent: "Mozilla/5.0 (X11; Linux x86_64; rv:39.0) Gecko/20100101 Firefox/39.0", URL: "http://sparrho.com/awesome/link"}
}
