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fix #1490

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Track channel join times, use them to optionally enforce history access
restrictions
This commit is contained in:
Shivaram Lingamneni 2021-01-20 21:13:18 -05:00
parent 0d0fb87857
commit 4a48e52518
12 changed files with 274 additions and 92 deletions
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21
irc/server.go
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@ -850,6 +850,7 @@ func (server *Server) GetHistorySequence(providedChannel *Channel, client *Clien
var status HistoryStatus
var target, correspondent string
var hist *history.Buffer
restriction := HistoryCutoffNone
channel = providedChannel
if channel == nil {
if strings.HasPrefix(query, "#") {
@ -859,12 +860,15 @@ func (server *Server) GetHistorySequence(providedChannel *Channel, client *Clien
}
}
}
var joinTimeCutoff time.Time
if channel != nil {
if !channel.hasClient(client) {
if present, cutoff := channel.joinTimeCutoff(client); present {
joinTimeCutoff = cutoff
} else {
err = errInsufficientPrivs
return
}
status, target = channel.historyStatus(config)
status, target, restriction = channel.historyStatus(config)
switch status {
case HistoryEphemeral:
hist = &channel.history
@ -896,15 +900,20 @@ func (server *Server) GetHistorySequence(providedChannel *Channel, client *Clien
cutoff = time.Now().UTC().Add(-time.Duration(config.History.Restrictions.ExpireTime))
}
// #836: registration date cutoff is always enforced for DMs
if config.History.Restrictions.EnforceRegistrationDate || channel == nil {
// either way, take the later of the two cutoffs
if restriction == HistoryCutoffRegistrationTime || channel == nil {
regCutoff := client.historyCutoff()
// take the later of the two cutoffs
if regCutoff.After(cutoff) {
cutoff = regCutoff
}
} else if restriction == HistoryCutoffJoinTime {
if joinTimeCutoff.After(cutoff) {
cutoff = joinTimeCutoff
}
}
// #836 again: grace period is never applied to DMs
if !cutoff.IsZero() && channel != nil {
if !cutoff.IsZero() && channel != nil && restriction != HistoryCutoffJoinTime {
cutoff = cutoff.Add(-time.Duration(config.History.Restrictions.GracePeriod))
}
@ -958,7 +967,7 @@ func (server *Server) DeleteMessage(target, msgid, accountName string) (err erro
if target[0] == '#' {
channel := server.channels.Get(target)
if channel != nil {
if status, _ := channel.historyStatus(config); status == HistoryEphemeral {
if status, _, _ := channel.historyStatus(config); status == HistoryEphemeral {
hist = &channel.history
}
}