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17 lines
388 B
Go
17 lines
388 B
Go
package main
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import (
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"errors"
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"net/http"
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"regexp"
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)
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func checkRedirectGood(req *http.Request, via []*http.Request) error {
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// GOOD: the host of `req.URL` must be `example.com`, `www.example.com` or `beta.example.com`
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re := "^((www|beta)\\.)?example\\.com/"
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if matched, _ := regexp.MatchString(re, req.URL.Host); matched {
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return nil
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}
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return errors.New("Invalid redirect")
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}
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