mirror of
https://github.com/go-gitea/gitea
synced 2025-10-27 17:38:25 +00:00
65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
package openid
|
|
|
|
import (
|
|
"errors"
|
|
"net/url"
|
|
"strings"
|
|
)
|
|
|
|
func Normalize(id string) (string, error) {
|
|
id = strings.TrimSpace(id)
|
|
if len(id) == 0 {
|
|
return "", errors.New("No id provided")
|
|
}
|
|
|
|
// 7.2 from openID 2.0 spec.
|
|
|
|
//If the user's input starts with the "xri://" prefix, it MUST be
|
|
//stripped off, so that XRIs are used in the canonical form.
|
|
if strings.HasPrefix(id, "xri://") {
|
|
id = id[6:]
|
|
return id, errors.New("XRI identifiers not supported")
|
|
}
|
|
|
|
// If the first character of the resulting string is an XRI
|
|
// Global Context Symbol ("=", "@", "+", "$", "!") or "(", as
|
|
// defined in Section 2.2.1 of [XRI_Syntax_2.0], then the input
|
|
// SHOULD be treated as an XRI.
|
|
if b := id[0]; b == '=' || b == '@' || b == '+' || b == '$' || b == '!' {
|
|
return id, errors.New("XRI identifiers not supported")
|
|
}
|
|
|
|
// Otherwise, the input SHOULD be treated as an http URL; if it
|
|
// does not include a "http" or "https" scheme, the Identifier
|
|
// MUST be prefixed with the string "http://". If the URL
|
|
// contains a fragment part, it MUST be stripped off together
|
|
// with the fragment delimiter character "#". See Section 11.5.2 for
|
|
// more information.
|
|
if !strings.HasPrefix(id, "http://") && !strings.HasPrefix(id,
|
|
"https://") {
|
|
id = "http://" + id
|
|
}
|
|
if fragmentIndex := strings.Index(id, "#"); fragmentIndex != -1 {
|
|
id = id[0:fragmentIndex]
|
|
}
|
|
if u, err := url.ParseRequestURI(id); err != nil {
|
|
return "", err
|
|
} else {
|
|
if u.Host == "" {
|
|
return "", errors.New("Invalid address provided as id")
|
|
}
|
|
if u.Path == "" {
|
|
u.Path = "/"
|
|
}
|
|
id = u.String()
|
|
}
|
|
|
|
// URL Identifiers MUST then be further normalized by both
|
|
// following redirects when retrieving their content and finally
|
|
// applying the rules in Section 6 of [RFC3986] to the final
|
|
// destination URL. This final URL MUST be noted by the Relying
|
|
// Party as the Claimed Identifier and be used when requesting
|
|
// authentication.
|
|
return id, nil
|
|
}
|