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add per-account quota for total message size disk usage

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so a single user cannot fill up the disk.
by default, there is (still) no limit. a default can be set in the config file
for all accounts, and a per-account max size can be set that would override any
global setting.

this does not take into account disk usage of the index database. and also not
of any file system overhead.
This commit is contained in:
Mechiel Lukkien
2023-12-20 20:54:12 +01:00
parent e048d0962b
commit d73bda7511
28 changed files with 434 additions and 50 deletions
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18
webmail/api.go
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@ -650,12 +650,18 @@ func (w Webmail) MessageSubmit(ctx context.Context, m SubmitMessage) {
MsgPrefix: []byte(msgPrefix),
}
if ok, maxSize, err := acc.CanAddMessageSize(tx, sentm.Size); err != nil {
xcheckf(ctx, err, "checking quota")
} else if !ok {
xcheckuserf(ctx, fmt.Errorf("account over maximum total message size %d", maxSize), "checking quota")
}
// Update mailbox before delivery, which changes uidnext.
sentmb.Add(sentm.MailboxCounts())
err = tx.Update(&sentmb)
xcheckf(ctx, err, "updating sent mailbox for counts")
err = acc.DeliverMessage(log, tx, &sentm, dataFile, true, false, false)
err = acc.DeliverMessage(log, tx, &sentm, dataFile, true, false, false, true)
if err != nil {
metricSubmission.WithLabelValues("storesenterror").Inc()
metricked = true
@ -825,8 +831,10 @@ func (Webmail) MessageDelete(ctx context.Context, messageIDs []int64) {
var mb store.Mailbox
remove := make([]store.Message, 0, len(messageIDs))
var totalSize int64
for _, mid := range messageIDs {
m := xmessageID(ctx, tx, mid)
totalSize += m.Size
if m.MailboxID != mb.ID {
if mb.ID != 0 {
@ -867,6 +875,9 @@ func (Webmail) MessageDelete(ctx context.Context, messageIDs []int64) {
changes = append(changes, mb.ChangeCounts())
}
err = acc.AddMessageSize(log, tx, -totalSize)
xcheckf(ctx, err, "updating disk usage")
// Mark removed messages as not needing training, then retrain them, so if they
// were trained, they get untrained.
for i := range remove {
@ -1171,10 +1182,12 @@ func (Webmail) MailboxEmpty(ctx context.Context, mailboxID int64) {
xcheckf(ctx, err, "removing message recipients")
// Adjust mailbox counts, gather UIDs for broadcasted change, prepare for untraining.
var totalSize int64
uids := make([]store.UID, len(expunged))
for i, m := range expunged {
m.Expunged = false // Gather returns updated values.
mb.Sub(m.MailboxCounts())
totalSize += m.Size
uids[i] = m.UID
expunged[i].Junk = false
@ -1184,6 +1197,9 @@ func (Webmail) MailboxEmpty(ctx context.Context, mailboxID int64) {
err = tx.Update(&mb)
xcheckf(ctx, err, "updating mailbox for counts")
err = acc.AddMessageSize(log, tx, -totalSize)
xcheckf(ctx, err, "updating disk usage")
err = acc.RetrainMessages(ctx, log, tx, expunged, true)
xcheckf(ctx, err, "retraining expunged messages")