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add config options to disable a domain and to disable logins for an account

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to facilitate migrations from/to other mail setups.

a domain can be added in "disabled" mode (or can be disabled/enabled later on).
you can configure a disabled domain, but incoming/outgoing messages involving
the domain are rejected with temporary error codes (as this may occur during a
migration, remote servers will try again, hopefully to the correct machine or
after this machine has been configured correctly). also, no acme tls certs will
be requested for disabled domains (the autoconfig/mta-sts dns records may still
point to the current/previous machine). accounts with addresses at disabled
domains can still login, unless logins are disabled for their accounts.

an account now has an option to disable logins. you can specify an error
message to show. this will be shown in smtp, imap and the web interfaces. it
could contain a message about migrations, and possibly a URL to a page with
information about how to migrate. incoming/outgoing email involving accounts
with login disabled are still accepted/delivered as normal (unless the domain
involved in the messages is disabled too). account operations by the admin,
such as importing/exporting messages still works.

in the admin web interface, listings of domains/accounts show if they are disabled.
domains & accounts can be enabled/disabled through the config file, cli
commands and admin web interface.

for issue #175 by RobSlgm
This commit is contained in:
Mechiel Lukkien
2025-01-25 20:39:20 +01:00
parent 132efdd9fb
commit 2d3d726f05
67 changed files with 1078 additions and 231 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
store/session.go
View File

@ -38,17 +38,23 @@ var sessions = struct {
pendingFlushes: map[string]map[SessionToken]struct{}{},
}
// Ensure sessions for account are initialized from database. If the sessions were
// initialized from the database, or when alwaysOpenAccount is true, an open
// account is returned (assuming no error occurred).
// Ensure sessions for account are initialized from database. If openAccount is
// set, an account is returned on success.
//
// must be called with sessions lock held.
func ensureAccountSessions(ctx context.Context, log mlog.Log, accountName string, alwaysOpenAccount bool) (*Account, error) {
var acc *Account
func ensureAccountSessions(ctx context.Context, log mlog.Log, accountName string, openAccount bool) (acc *Account, rerr error) {
defer func() {
if !openAccount && acc != nil {
if err := acc.Close(); err != nil && rerr == nil {
rerr = fmt.Errorf("closing account: %v", err)
}
acc = nil
}
}()
accSessions := sessions.accounts[accountName]
if accSessions == nil {
var err error
acc, err = OpenAccount(log, accountName)
acc, err = OpenAccount(log, accountName, openAccount)
if err != nil {
return nil, err
}
@ -70,10 +76,10 @@ func ensureAccountSessions(ctx context.Context, log mlog.Log, accountName string
sessions.accounts[accountName] = accSessions
}
if acc == nil && alwaysOpenAccount {
return OpenAccount(log, accountName)
if acc == nil && openAccount {
acc, rerr = OpenAccount(log, accountName, true)
}
return acc, nil
return
}
// SessionUse checks if a session is valid. If csrfToken is the empty string, no
@ -83,13 +89,8 @@ func SessionUse(ctx context.Context, log mlog.Log, accountName string, sessionTo
sessions.Lock()
defer sessions.Unlock()
acc, err := ensureAccountSessions(ctx, log, accountName, false)
if err != nil {
if _, err := ensureAccountSessions(ctx, log, accountName, false); err != nil {
return LoginSession{}, err
} else if acc != nil {
if err := acc.Close(); err != nil {
return LoginSession{}, fmt.Errorf("closing account: %w", err)
}
}
return sessionUse(ctx, log, accountName, sessionToken, csrfToken)
@ -149,7 +150,7 @@ func sessionsDelayedFlush(log mlog.Log, accountName string) {
return
}
acc, err := OpenAccount(log, accountName)
acc, err := OpenAccount(log, accountName, false)
if err != nil && errors.Is(err, ErrAccountUnknown) {
// Account may have been removed. Nothing to flush.
log.Infox("flushing sessions for account", err, slog.String("account", accountName))
@ -282,7 +283,10 @@ func SessionRemove(ctx context.Context, log mlog.Log, accountName string, sessio
if err != nil {
return err
}
defer acc.Close()
defer func() {
err := acc.Close()
log.Check(err, "closing account")
}()
ls, ok := sessions.accounts[accountName][sessionToken]
if !ok {