Remove support for mixed multi-upstream LIST
Multi-upstream connections can still send LIST commands with a network suffix.
This commit is contained in:
Simon Ser
parent
d870efa666
commit
0c360d24c5
@ -1837,48 +1837,34 @@ func (dc *downstreamConn) handleMessageRegistered(msg *irc.Message) error {
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case "LIST":
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// TODO: support ELIST when supported by all upstreams
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pl := pendingLIST{
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downstreamID: dc.id,
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pendingCommands: make(map[int64]*irc.Message),
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}
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var upstream *upstreamConn
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var upstreamChannels map[int64][]string
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if len(msg.Params) > 0 {
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uc, upstreamMask, err := dc.unmarshalEntity(msg.Params[0])
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if err == nil && upstreamMask == "*" { // LIST */network: send LIST only to one network
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upstream = uc
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} else {
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upstreamChannels = make(map[int64][]string)
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channels := strings.Split(msg.Params[0], ",")
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for _, channel := range channels {
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uc, upstreamChannel, err := dc.unmarshalEntity(channel)
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network := dc.network
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if network == nil && len(msg.Params) > 0 {
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var err error
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network, msg.Params[0], err = dc.unmarshalEntityNetwork(msg.Params[0])
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if err != nil {
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return err
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}
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upstreamChannels[uc.network.ID] = append(upstreamChannels[uc.network.ID], upstreamChannel)
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}
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}
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if network == nil {
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dc.SendMessage(&irc.Message{
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Prefix: dc.srv.prefix(),
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Command: irc.RPL_LISTEND,
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Params: []string{dc.nick, "LIST without a network suffix is not supported in multi-upstream mode"},
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})
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return nil
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}
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dc.user.pendingLISTs = append(dc.user.pendingLISTs, pl)
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dc.forEachUpstream(func(uc *upstreamConn) {
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if upstream != nil && upstream != uc {
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return
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}
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var params []string
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if upstreamChannels != nil {
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if channels, ok := upstreamChannels[uc.network.ID]; ok {
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params = []string{strings.Join(channels, ",")}
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} else {
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return
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}
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}
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pl.pendingCommands[uc.network.ID] = &irc.Message{
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Command: "LIST",
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Params: params,
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}
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uc.trySendLIST(dc.id)
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uc := network.conn
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if uc == nil {
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dc.SendMessage(&irc.Message{
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Prefix: dc.srv.prefix(),
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Command: irc.RPL_LISTEND,
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Params: []string{dc.nick, "Disconnected from upstream server"},
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})
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return nil
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}
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uc.enqueueLIST(dc, msg)
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case "NAMES":
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if len(msg.Params) == 0 {
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dc.SendMessage(&irc.Message{
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127
upstream.go
127
upstream.go
@ -72,6 +72,11 @@ func (uc *upstreamChannel) updateAutoDetach(dur time.Duration) {
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})
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}
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type pendingUpstreamCommand struct {
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downstreamID uint64
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cmd *irc.Message
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}
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type upstreamConn struct {
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conn
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@ -104,8 +109,10 @@ type upstreamConn struct {
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casemapIsSet bool
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// set of LIST commands in progress, per downstream
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pendingLISTDownstreamSet map[uint64]struct{}
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// Queue of LIST commands in progress. The first entry has been sent to the
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// server and is awaiting reply. The following entries have not been sent
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// yet.
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pendingLIST []pendingUpstreamCommand
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gotMotd bool
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}
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@ -201,7 +208,6 @@ func connectToUpstream(network *network) (*upstreamConn, error) {
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availableChannelModes: stdChannelModes,
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availableMemberships: stdMemberships,
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isupport: make(map[string]*string),
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pendingLISTDownstreamSet: make(map[uint64]struct{}),
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}
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return uc, nil
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}
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@ -235,28 +241,9 @@ func (uc *upstreamConn) isOurNick(nick string) bool {
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return uc.nickCM == uc.network.casemap(nick)
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}
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func (uc *upstreamConn) getPendingLIST() *pendingLIST {
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for _, pl := range uc.user.pendingLISTs {
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if _, ok := pl.pendingCommands[uc.network.ID]; !ok {
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continue
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}
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return &pl
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}
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return nil
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}
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func (uc *upstreamConn) endPendingLISTs(all bool) (found bool) {
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found = false
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for i := 0; i < len(uc.user.pendingLISTs); i++ {
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pl := uc.user.pendingLISTs[i]
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if _, ok := pl.pendingCommands[uc.network.ID]; !ok {
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continue
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}
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delete(pl.pendingCommands, uc.network.ID)
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if len(pl.pendingCommands) == 0 {
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uc.user.pendingLISTs = append(uc.user.pendingLISTs[:i], uc.user.pendingLISTs[i+1:]...)
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i--
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uc.forEachDownstreamByID(pl.downstreamID, func(dc *downstreamConn) {
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func (uc *upstreamConn) endPendingLISTs() {
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for _, pendingCmd := range uc.pendingLIST {
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uc.forEachDownstreamByID(pendingCmd.downstreamID, func(dc *downstreamConn) {
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dc.SendMessage(&irc.Message{
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Prefix: dc.srv.prefix(),
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Command: irc.RPL_LISTEND,
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@ -264,44 +251,53 @@ func (uc *upstreamConn) endPendingLISTs(all bool) (found bool) {
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})
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})
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}
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found = true
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if !all {
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delete(uc.pendingLISTDownstreamSet, pl.downstreamID)
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uc.user.forEachUpstream(func(uc *upstreamConn) {
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uc.trySendLIST(pl.downstreamID)
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uc.pendingLIST = nil
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}
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func (uc *upstreamConn) sendNextPendingLIST() {
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if len(uc.pendingLIST) == 0 {
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return
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}
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uc.SendMessage(uc.pendingLIST[0].cmd)
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}
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func (uc *upstreamConn) enqueueLIST(dc *downstreamConn, cmd *irc.Message) {
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uc.pendingLIST = append(uc.pendingLIST, pendingUpstreamCommand{
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downstreamID: dc.id,
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cmd: cmd,
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})
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return
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if len(uc.pendingLIST) == 1 {
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uc.sendNextPendingLIST()
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}
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}
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return
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}
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func (uc *upstreamConn) trySendLIST(downstreamID uint64) {
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if _, ok := uc.pendingLISTDownstreamSet[downstreamID]; ok {
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// a LIST command is already pending
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// we will try again when that command is completed
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return
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func (uc *upstreamConn) currentPendingLIST() (*downstreamConn, *irc.Message) {
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if len(uc.pendingLIST) == 0 {
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return nil, nil
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}
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for _, pl := range uc.user.pendingLISTs {
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if pl.downstreamID != downstreamID {
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continue
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pendingCmd := uc.pendingLIST[0]
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for _, dc := range uc.user.downstreamConns {
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if dc.id == pendingCmd.downstreamID {
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return dc, pendingCmd.cmd
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}
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// this is the first pending LIST command list of the downstream
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listCommand, ok := pl.pendingCommands[uc.network.ID]
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if !ok {
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// there is no command for this upstream in these LIST commands
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// do not send anything
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continue
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}
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// there is a command for this upstream in these LIST commands
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// send it now
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uc.SendMessageLabeled(downstreamID, listCommand)
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uc.pendingLISTDownstreamSet[downstreamID] = struct{}{}
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return
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return nil, pendingCmd.cmd
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}
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func (uc *upstreamConn) dequeueLIST() (*downstreamConn, *irc.Message) {
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dc, cmd := uc.currentPendingLIST()
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if len(uc.pendingLIST) > 0 {
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copy(uc.pendingLIST, uc.pendingLIST[1:])
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uc.pendingLIST = uc.pendingLIST[:len(uc.pendingLIST)-1]
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}
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uc.sendNextPendingLIST()
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return dc, cmd
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}
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func (uc *upstreamConn) parseMembershipPrefix(s string) (ms *memberships, nick string) {
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@ -1099,23 +1095,31 @@ func (uc *upstreamConn) handleMessage(msg *irc.Message) error {
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return err
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}
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pl := uc.getPendingLIST()
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if pl == nil {
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dc, cmd := uc.currentPendingLIST()
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if cmd == nil {
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return fmt.Errorf("unexpected RPL_LIST: no matching pending LIST")
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} else if dc == nil {
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return nil
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}
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uc.forEachDownstreamByID(pl.downstreamID, func(dc *downstreamConn) {
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dc.SendMessage(&irc.Message{
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Prefix: dc.srv.prefix(),
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Command: irc.RPL_LIST,
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Params: []string{dc.nick, dc.marshalEntity(uc.network, channel), clients, topic},
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})
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})
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case irc.RPL_LISTEND:
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ok := uc.endPendingLISTs(false)
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if !ok {
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dc, cmd := uc.dequeueLIST()
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if cmd == nil {
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return fmt.Errorf("unexpected RPL_LISTEND: no matching pending LIST")
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} else if dc == nil {
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return nil
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}
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dc.SendMessage(&irc.Message{
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Prefix: dc.srv.prefix(),
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Command: irc.RPL_LISTEND,
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Params: []string{dc.nick, "End of /LIST"},
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})
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case irc.RPL_NAMREPLY:
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var name, statusStr, members string
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if err := parseMessageParams(msg, nil, &statusStr, &name, &members); err != nil {
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@ -1433,10 +1437,7 @@ func (uc *upstreamConn) handleMessage(msg *irc.Message) error {
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}
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if command == "LIST" {
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ok := uc.endPendingLISTs(false)
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if !ok {
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return fmt.Errorf("unexpected response for LIST: %q: no matching pending LIST", msg.Command)
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}
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uc.endPendingLISTs()
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}
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uc.forEachDownstreamByID(downstreamID, func(dc *downstreamConn) {
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11
user.go
11
user.go
@ -405,15 +405,6 @@ type user struct {
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networks []*network
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downstreamConns []*downstreamConn
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msgStore messageStore
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// LIST commands in progress
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pendingLISTs []pendingLIST
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}
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type pendingLIST struct {
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downstreamID uint64
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// list of per-upstream LIST commands not yet sent or completed
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pendingCommands map[int64]*irc.Message
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}
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func newUser(srv *Server, record *User) *user {
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@ -690,7 +681,7 @@ func (u *user) run() {
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func (u *user) handleUpstreamDisconnected(uc *upstreamConn) {
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uc.network.conn = nil
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uc.endPendingLISTs(true)
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uc.endPendingLISTs()
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for _, entry := range uc.channels.innerMap {
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uch := entry.value.(*upstreamChannel)
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