mirror of
https://github.com/element-hq/dendrite.git
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44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
// Copyright 2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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// Please see LICENSE files in the repository root for full details.
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package userutil
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import (
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"errors"
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"fmt"
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"strings"
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"github.com/element-hq/dendrite/setup/config"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/matrix-org/gomatrixserverlib/spec"
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)
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// ParseUsernameParam extracts localpart from usernameParam.
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// usernameParam can either be a user ID or just the localpart/username.
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// If serverName is passed, it is verified against the domain obtained from usernameParam (if present)
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// Returns error in case of invalid usernameParam.
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func ParseUsernameParam(usernameParam string, cfg *config.Global) (string, spec.ServerName, error) {
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localpart := usernameParam
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if strings.HasPrefix(usernameParam, "@") {
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lp, domain, err := gomatrixserverlib.SplitID('@', usernameParam)
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if err != nil {
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return "", "", errors.New("invalid username")
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}
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if !cfg.IsLocalServerName(domain) {
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return "", "", errors.New("user ID does not belong to this server")
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}
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return lp, domain, nil
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}
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return localpart, cfg.ServerName, nil
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}
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// MakeUserID generates user ID from localpart & server name
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func MakeUserID(localpart string, server spec.ServerName) string {
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return fmt.Sprintf("@%s:%s", localpart, string(server))
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}
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