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68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
package url
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import (
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"errors"
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"fmt"
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"net/url"
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"strings"
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)
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var (
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// ErrUserInfoExists is returned when a join address already contains
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// a username and a password.
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ErrUserInfoExists = errors.New("userinfo exists")
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)
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// NormalizeAddr ensures that the given URL has a HTTP protocol prefix.
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// If none is supplied, it prefixes the URL with "http://".
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func NormalizeAddr(addr string) string {
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if !strings.HasPrefix(addr, "http://") && !strings.HasPrefix(addr, "https://") {
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return fmt.Sprintf("http://%s", addr)
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}
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return addr
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}
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// EnsureHTTPS modifies the given URL, ensuring it is using the HTTPS protocol.
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func EnsureHTTPS(addr string) string {
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if !strings.HasPrefix(addr, "http://") && !strings.HasPrefix(addr, "https://") {
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return fmt.Sprintf("https://%s", addr)
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}
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return strings.Replace(addr, "http://", "https://", 1)
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}
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// CheckHTTPS returns true if the given URL uses HTTPS.
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func CheckHTTPS(addr string) bool {
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return strings.HasPrefix(addr, "https://")
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}
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// AddBasicAuth adds username and password to the join address. If username is empty
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// joinAddr is returned unchanged. If joinAddr already contains a username, ErrUserInfoExists
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// is returned.
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func AddBasicAuth(joinAddr, username, password string) (string, error) {
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if username == "" {
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return joinAddr, nil
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}
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u, err := url.Parse(joinAddr)
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if err != nil {
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return "", err
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}
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if u.User != nil && u.User.Username() != "" {
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return "", ErrUserInfoExists
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}
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u.User = url.UserPassword(username, password)
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return u.String(), nil
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}
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// RemoveBasicAuth returns a copy of the given URL, with any basic auth password
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// redacted.
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func RemoveBasicAuth(u string) string {
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uu, err := url.Parse(u)
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if err != nil {
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return u
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}
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return uu.Redacted()
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}
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