44 lines
919 B
Go
44 lines
919 B
Go
package routes
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import (
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"crypto/rand"
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"encoding/hex"
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"gifuu/tools"
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"net/http"
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"strconv"
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"time"
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)
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func GET_Challenge(w http.ResponseWriter, r *http.Request) {
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query := r.URL.Query()
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paramDifficulty, _ := strconv.Atoi(query.Get("difficulty"))
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if paramDifficulty < 18 {
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tools.SendClientError(w, r, tools.ERROR_CHALLENGE_TOO_EASY)
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return
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}
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// Create Session
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nonce := make([]byte, 16)
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if _, err := rand.Read(nonce); err != nil {
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tools.SendServerError(w, r, err)
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return
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}
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normal := hex.EncodeToString(nonce)
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expiry := time.Now().Add(5 * time.Minute).Unix()
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// Store Session
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tools.ChallengeAtomic.Lock()
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tools.ChallengeSession[normal] = tools.ChallengeSessionData{
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Expires: expiry,
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Difficulty: paramDifficulty,
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}
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tools.ChallengeAtomic.Unlock()
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tools.SendJSON(w, r, http.StatusOK, map[string]any{
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"nonce": normal,
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"difficulty": paramDifficulty,
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"expires": expiry,
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})
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}
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