mirror of https://gitee.com/answerdev/answer.git
48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
package checker
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import (
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"fmt"
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"regexp"
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)
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const (
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levelD = iota
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LevelC
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LevelB
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LevelA
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LevelS
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)
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// CheckPassword
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// minLength: Specifies the minimum length of a password
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// maxLength：Specifies the maximum length of a password
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// minLevel：Specifies the minimum strength level required for passwords
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// pwd：Text passwords
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func CheckPassword(minLength, maxLength, minLevel int, pwd string) error {
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// First check whether the password length is within the range
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if len(pwd) < minLength {
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return fmt.Errorf("BAD PASSWORD: The password is shorter than %d characters", minLength)
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}
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if len(pwd) > maxLength {
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return fmt.Errorf("BAD PASSWORD: The password is logner than %d characters", maxLength)
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}
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// The password strength level is initialized to D.
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// The regular is used to verify the password strength.
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// If the matching is successful, the password strength increases by 1
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level := levelD
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patternList := []string{`[0-9]+`, `[a-z]+`, `[A-Z]+`, `[~!@#$%^&*?_-]+`}
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for _, pattern := range patternList {
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match, _ := regexp.MatchString(pattern, pwd)
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if match {
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level++
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}
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}
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// If the final password strength falls below the required minimum strength, return with an error
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if level < minLevel {
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return fmt.Errorf("the password does not satisfy the current policy requirements")
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}
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return nil
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}
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