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fix #831

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This commit is contained in:
Shivaram Lingamneni 2020-02-27 19:07:49 -05:00
parent faf6e513d2
commit 85dfebce43
3 changed files with 27 additions and 19 deletions
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11
irc/channel.go
View File

@ -772,19 +772,20 @@ func (channel *Channel) autoReplayHistory(client *Client, rb *ResponseBuffer, sk
// autoreplay any messages as necessary
var items []history.Item
var after, before time.Time
var start, end time.Time
if rb.session.zncPlaybackTimes.ValidFor(channel.NameCasefolded()) {
after, before = rb.session.zncPlaybackTimes.after, rb.session.zncPlaybackTimes.before
start, end = rb.session.zncPlaybackTimes.start, rb.session.zncPlaybackTimes.end
} else if !rb.session.autoreplayMissedSince.IsZero() {
// we already checked for history caps in `playReattachMessages`
after = rb.session.autoreplayMissedSince
start = time.Now().UTC()
end = rb.session.autoreplayMissedSince
}
if !after.IsZero() || !before.IsZero() {
if !start.IsZero() || !end.IsZero() {
_, seq, _ := channel.server.GetHistorySequence(channel, client, "")
if seq != nil {
zncMax := channel.server.Config().History.ZNCMax
items, _, _ = seq.Between(history.Selector{Time: after}, history.Selector{Time: before}, zncMax)
items, _, _ = seq.Between(history.Selector{Time: start}, history.Selector{Time: end}, zncMax)
}
} else if !rb.session.HasHistoryCaps() {
var replayLimit int

2
irc/client.go
View File

@ -668,7 +668,7 @@ func (client *Client) playReattachMessages(session *Session) {
}
if !session.autoreplayMissedSince.IsZero() && !hasHistoryCaps {
rb := NewResponseBuffer(session)
zncPlayPrivmsgs(client, rb, "*", session.autoreplayMissedSince, time.Time{})
zncPlayPrivmsgs(client, rb, "*", time.Now().UTC(), session.autoreplayMissedSince)
rb.Send(true)
}
session.autoreplayMissedSince = time.Time{}

33
irc/znc.go
View File

@ -54,8 +54,8 @@ func zncWireTimeToTime(str string) (result time.Time) {
}
type zncPlaybackTimes struct {
after time.Time
before time.Time
start time.Time
end time.Time
targets StringSet // nil for "*" (everything), otherwise the channel names
setAt time.Time
}
@ -80,19 +80,26 @@ func (z *zncPlaybackTimes) ValidFor(target string) bool {
// PRIVMSG *playback :play <target> [lower_bound] [upper_bound]
// e.g., PRIVMSG *playback :play * 1558374442
func zncPlaybackHandler(client *Client, command string, params []string, rb *ResponseBuffer) {
if len(params) < 2 {
if len(params) < 2 || len(params) > 4 {
return
} else if strings.ToLower(params[0]) != "play" {
return
}
targetString := params[1]
var after, before time.Time
if 2 < len(params) {
after = zncWireTimeToTime(params[2])
}
if 3 < len(params) {
before = zncWireTimeToTime(params[3])
now := time.Now().UTC()
var start, end time.Time
switch len(params) {
case 3:
// #831: this should have the same semantics as `LATEST timestamp=qux`,
// or equivalently `BETWEEN timestamp=$now timestamp=qux`, as opposed to
// `AFTER timestamp=qux` (this matters in the case where there are
// more than znc-maxmessages available)
start = now
end = zncWireTimeToTime(params[2])
case 4:
start = zncWireTimeToTime(params[2])
end = zncWireTimeToTime(params[3])
}
var targets StringSet
@ -115,7 +122,7 @@ func zncPlaybackHandler(client *Client, command string, params []string, rb *Res
// channels; redundant JOIN is a complete no-op so we won't replay twice
if params[1] == "*" {
zncPlayPrivmsgs(client, rb, "*", after, before)
zncPlayPrivmsgs(client, rb, "*", start, end)
} else {
targets = make(StringSet)
for _, targetName := range strings.Split(targetString, ",") {
@ -132,8 +139,8 @@ func zncPlaybackHandler(client *Client, command string, params []string, rb *Res
}
rb.session.zncPlaybackTimes = &zncPlaybackTimes{
after: after,
before: before,
start: start,
end: end,
targets: targets,
setAt: time.Now().UTC(),
}
@ -146,7 +153,7 @@ func zncPlaybackHandler(client *Client, command string, params []string, rb *Res
}
for _, cfNick := range nickTargets {
zncPlayPrivmsgs(client, rb, cfNick, after, before)
zncPlayPrivmsgs(client, rb, cfNick, start, end)
rb.Flush(true)
}
}