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Add error check for nil SMTP authentication method
Ensure that the SMTP authentication method is not nil by adding a corresponding error check in the WithSMTPAuthCustom function. Introduced a new error, ErrSMTPAuthMethodIsNil, to handle this validation.
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1 changed files with 6 additions and 0 deletions
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@ -242,6 +242,9 @@ var (
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// provided as argument to the WithDSN Option.
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ErrInvalidDSNRcptNotifyCombination = errors.New("DSN rcpt notify option NEVER cannot be " +
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"combined with any of SUCCESS, FAILURE or DELAY")
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// ErrSMTPAuthMethodIsNil indicates that the SMTP authentication method provided is nil
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ErrSMTPAuthMethodIsNil = errors.New("SMTP auth method is nil")
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)
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// NewClient creates a new Client instance with the provided host and optional configuration Option functions.
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@ -510,6 +513,9 @@ func WithSMTPAuth(authtype SMTPAuthType) Option {
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// - An Option function that sets the custom SMTP authentication for the Client.
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func WithSMTPAuthCustom(smtpAuth smtp.Auth) Option {
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return func(c *Client) error {
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if smtpAuth == nil {
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return ErrSMTPAuthMethodIsNil
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}
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c.smtpAuth = smtpAuth
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c.smtpAuthType = SMTPAuthCustom
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return nil
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