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116 lines
3.1 KiB
Go
116 lines
3.1 KiB
Go
// -*- Mode: Go; indent-tabs-mode: t -*-
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/*
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* Copyright (C) 2016 Canonical Ltd
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package asserts
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import (
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"fmt"
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"regexp"
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"time"
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)
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var (
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// account ids look like snap-ids or a nice identifier
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validAccountID = regexp.MustCompile("^(?:[a-z0-9A-Z]{32}|[-a-z0-9]{2,28})$")
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)
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// Account holds an account assertion, which ties a name for an account
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// to its identifier and provides the authority's confidence in the name's validity.
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type Account struct {
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assertionBase
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validation string
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timestamp time.Time
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}
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func IsValidAccountID(accountID string) bool {
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return validAccountID.MatchString(accountID)
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}
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// AccountID returns the account-id of the account.
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func (acc *Account) AccountID() string {
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return acc.HeaderString("account-id")
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}
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// Username returns the user name for the account.
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func (acc *Account) Username() string {
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return acc.HeaderString("username")
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}
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// DisplayName returns the human-friendly name for the account.
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func (acc *Account) DisplayName() string {
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return acc.HeaderString("display-name")
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}
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// Validation returns the level of confidence of the authority in the
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// account's identity, expected to be "unproven", "starred" or "verified".
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func (acc *Account) Validation() string {
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return acc.validation
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}
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// Timestamp returns the time when the account was issued.
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func (acc *Account) Timestamp() time.Time {
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return acc.timestamp
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}
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// Implement further consistency checks.
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func (acc *Account) checkConsistency(db RODatabase, acck *AccountKey) error {
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if !db.IsTrustedAccount(acc.AuthorityID()) {
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return fmt.Errorf("account assertion for %q is not signed by a directly trusted authority: %s", acc.AccountID(), acc.AuthorityID())
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}
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return nil
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}
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// expected interface is implemented
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var _ consistencyChecker = (*Account)(nil)
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func assembleAccount(assert assertionBase) (Assertion, error) {
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_, err := checkNotEmptyString(assert.headers, "display-name")
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if err != nil {
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return nil, err
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}
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validation, err := checkNotEmptyString(assert.headers, "validation")
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if err != nil {
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return nil, err
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}
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// backward compatibility with the hard-coded trusted account
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// assertions
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// TODO: generate revision 1 of them with validation
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// s/certified/verified/
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if validation == "certified" {
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validation = "verified"
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}
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timestamp, err := checkRFC3339Date(assert.headers, "timestamp")
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if err != nil {
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return nil, err
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}
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_, err = checkOptionalString(assert.headers, "username")
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if err != nil {
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return nil, err
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}
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return &Account{
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assertionBase: assert,
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validation: validation,
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timestamp: timestamp,
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}, nil
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}
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