45 lines
1001 B
Go
45 lines
1001 B
Go
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package accessToken
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import (
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"errors"
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"fmt"
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"regexp"
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)
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func Generate(prefix string, secret string) (string, error) {
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if len(prefix) != 3 {
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return "", errors.New("prefix is not 3 characters long")
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}
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randomString, err := randomBase62String(30)
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if err != nil {
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return "", err
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}
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firstPart := fmt.Sprintf("%s_%s", prefix, randomString)
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checksum, err := getChecksum(firstPart + secret)
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if err != nil {
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return "", err
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}
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return firstPart + checksum, nil
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}
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func Validate(token string, secret string) (bool, error) {
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exp := regexp.MustCompile("([abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]{3})_([0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]{30})([0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]{6})")
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if !exp.Match([]byte(token)) {
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return false, errors.New("wrong token format")
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}
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checksum, err := getChecksum(token[:len(token)-6] + secret)
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if err != nil {
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return false, err
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}
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return token[len(token)-6:] == checksum, nil
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}
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