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// Copyright (c) 2022 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package id
import (
"fmt"
"strings"
)
// TrustState determines how trusted a device is.
type TrustState int
const (
TrustStateBlacklisted TrustState = -100
TrustStateUnset TrustState = 0
TrustStateUnknownDevice TrustState = 10
TrustStateForwarded TrustState = 20
TrustStateCrossSignedUntrusted TrustState = 50
TrustStateCrossSignedTOFU TrustState = 100
TrustStateCrossSignedVerified TrustState = 200
TrustStateVerified TrustState = 300
TrustStateInvalid TrustState = (1 << 31) - 1
)
func (ts *TrustState) UnmarshalText(data []byte) error {
strData := string(data)
state := ParseTrustState(strData)
if state == TrustStateInvalid {
return fmt.Errorf("invalid trust state %q", strData)
}
*ts = state
return nil
}
func (ts *TrustState) MarshalText() ([]byte, error) {
return []byte(ts.String()), nil
}
func ParseTrustState(val string) TrustState {
switch strings.ToLower(val) {
case "blacklisted":
return TrustStateBlacklisted
case "unverified":
return TrustStateUnset
case "cross-signed-untrusted":
return TrustStateCrossSignedUntrusted
case "unknown-device":
return TrustStateUnknownDevice
case "forwarded":
return TrustStateForwarded
case "cross-signed-tofu", "cross-signed":
return TrustStateCrossSignedTOFU
case "cross-signed-verified", "cross-signed-trusted":
return TrustStateCrossSignedVerified
case "verified":
return TrustStateVerified
default:
return TrustStateInvalid
}
}
func (ts TrustState) String() string {
switch ts {
case TrustStateBlacklisted:
return "blacklisted"
case TrustStateUnset:
return "unverified"
case TrustStateCrossSignedUntrusted:
return "cross-signed-untrusted"
case TrustStateUnknownDevice:
return "unknown-device"
case TrustStateForwarded:
return "forwarded"
case TrustStateCrossSignedTOFU:
return "cross-signed-tofu"
case TrustStateCrossSignedVerified:
return "cross-signed-verified"
case TrustStateVerified:
return "verified"
default:
return "invalid"
}
}
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