34 lines
644 B
Go
34 lines
644 B
Go
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package validate
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import (
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"errors"
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"strings"
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)
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// Friendly user-facing errors
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var (
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errBadEmail = errors.New("User doesn't exist.")
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)
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// Email does basic validation on the intended receiving address. It returns a
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// friendly error message that can be served directly to connecting clients if
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// validation fails.
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func Email(to string) error {
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host := to[strings.IndexRune(to, '@')+1:]
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// TODO: use given configurable host (don't hardcode)
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if host != "writ.es" {
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return errBadEmail
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}
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toName := to[:strings.IndexRune(to, '@')]
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if toName == "anyone" {
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return nil
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}
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if len(toName) != 32 {
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return errBadEmail
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}
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return nil
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}
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