123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740 |
- // Copyright (c) 2012-2014 Jeremy Latt
- // Copyright (c) 2014-2015 Edmund Huber
- // Copyright (c) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
- // released under the MIT license
-
- package irc
-
- import (
- "fmt"
- "log"
- "strconv"
- "time"
-
- "sync"
-
- "github.com/goshuirc/irc-go/ircmsg"
- "github.com/oragono/oragono/irc/caps"
- "github.com/tidwall/buntdb"
- )
-
- // Channel represents a channel that clients can join.
- type Channel struct {
- flags ModeSet
- lists map[Mode]*UserMaskSet
- key string
- membersMutex sync.RWMutex
- members MemberSet
- name string
- nameCasefolded string
- server *Server
- createdTime time.Time
- topic string
- topicSetBy string
- topicSetTime time.Time
- userLimit uint64
- }
-
- // NewChannel creates a new channel from a `Server` and a `name`
- // string, which must be unique on the server.
- func NewChannel(s *Server, name string, addDefaultModes bool) *Channel {
- casefoldedName, err := CasefoldChannel(name)
- if err != nil {
- log.Println(fmt.Sprintf("ERROR: Channel name is bad: [%s]", name), err.Error())
- return nil
- }
-
- channel := &Channel{
- flags: make(ModeSet),
- lists: map[Mode]*UserMaskSet{
- BanMask: NewUserMaskSet(),
- ExceptMask: NewUserMaskSet(),
- InviteMask: NewUserMaskSet(),
- },
- members: make(MemberSet),
- name: name,
- nameCasefolded: casefoldedName,
- server: s,
- }
-
- if addDefaultModes {
- for _, mode := range s.GetDefaultChannelModes() {
- channel.flags[mode] = true
- }
- }
-
- s.channels.Add(channel)
-
- return channel
- }
-
- // IsEmpty returns true if the channel has no clients.
- func (channel *Channel) IsEmpty() bool {
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- return channel.isEmptyNoMutex()
- }
-
- func (channel *Channel) isEmptyNoMutex() bool {
- return len(channel.members) == 0
- }
-
- // Names sends the list of users joined to the channel to the given client.
- func (channel *Channel) Names(client *Client) {
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- channel.namesNoMutex(client)
- }
-
- func (channel *Channel) namesNoMutex(client *Client) {
- currentNicks := channel.nicksNoMutex(client)
- // assemble and send replies
- maxNamLen := 480 - len(client.server.name) - len(client.nick)
- var buffer string
- for _, nick := range currentNicks {
- if buffer == "" {
- buffer += nick
- continue
- }
-
- if len(buffer)+1+len(nick) > maxNamLen {
- client.Send(nil, client.server.name, RPL_NAMREPLY, client.nick, "=", channel.name, buffer)
- buffer = nick
- continue
- }
-
- buffer += " "
- buffer += nick
- }
-
- client.Send(nil, client.server.name, RPL_NAMREPLY, client.nick, "=", channel.name, buffer)
- client.Send(nil, client.server.name, RPL_ENDOFNAMES, client.nick, channel.name, "End of NAMES list")
- }
-
- // ClientIsAtLeast returns whether the client has at least the given channel privilege.
- func (channel *Channel) ClientIsAtLeast(client *Client, permission Mode) bool {
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- return channel.clientIsAtLeastNoMutex(client, permission)
- }
-
- func (channel *Channel) clientIsAtLeastNoMutex(client *Client, permission Mode) bool {
- // requires RLock()
-
- // get voice, since it's not a part of ChannelPrivModes
- if channel.members.HasMode(client, permission) {
- return true
- }
-
- // check regular modes
- for _, mode := range ChannelPrivModes {
- if channel.members.HasMode(client, mode) {
- return true
- }
-
- if mode == permission {
- break
- }
- }
-
- return false
- }
-
- // Prefixes returns a list of prefixes for the given set of channel modes.
- func (modes ModeSet) Prefixes(isMultiPrefix bool) string {
- var prefixes string
-
- // add prefixes in order from highest to lowest privs
- for _, mode := range ChannelPrivModes {
- if modes[mode] {
- prefixes += ChannelModePrefixes[mode]
- }
- }
- if modes[Voice] {
- prefixes += ChannelModePrefixes[Voice]
- }
-
- if !isMultiPrefix && len(prefixes) > 1 {
- prefixes = string(prefixes[0])
- }
-
- return prefixes
- }
-
- func (channel *Channel) nicksNoMutex(target *Client) []string {
- isMultiPrefix := (target != nil) && target.capabilities.Has(caps.MultiPrefix)
- isUserhostInNames := (target != nil) && target.capabilities.Has(caps.UserhostInNames)
- nicks := make([]string, len(channel.members))
- i := 0
- for client, modes := range channel.members {
- nicks[i] += modes.Prefixes(isMultiPrefix)
- if isUserhostInNames {
- nicks[i] += client.nickMaskString
- } else {
- nicks[i] += client.nick
- }
- i++
- }
- return nicks
- }
-
- // <mode> <mode params>
- func (channel *Channel) modeStringNoLock(client *Client) (str string) {
- // RLock()
- isMember := client.flags[Operator] || channel.members.Has(client)
- // RUnlock()
- showKey := isMember && (channel.key != "")
- showUserLimit := channel.userLimit > 0
-
- // flags with args
- if showKey {
- str += Key.String()
- }
- if showUserLimit {
- str += UserLimit.String()
- }
-
- // flags
- for mode := range channel.flags {
- str += mode.String()
- }
-
- str = "+" + str
-
- // args for flags with args: The order must match above to keep
- // positional arguments in place.
- if showKey {
- str += " " + channel.key
- }
- if showUserLimit {
- str += " " + strconv.FormatUint(channel.userLimit, 10)
- }
-
- return str
- }
-
- // IsFull returns true if this channel is at its' members limit.
- func (channel *Channel) IsFull() bool {
- return (channel.userLimit > 0) && (uint64(len(channel.members)) >= channel.userLimit)
- }
-
- // CheckKey returns true if the key is not set or matches the given key.
- func (channel *Channel) CheckKey(key string) bool {
- return (channel.key == "") || (channel.key == key)
- }
-
- // Join joins the given client to this channel (if they can be joined).
- //TODO(dan): /SAJOIN and maybe a ForceJoin function?
- func (channel *Channel) Join(client *Client, key string) {
- channel.membersMutex.Lock()
- defer channel.membersMutex.Unlock()
- if channel.members.Has(client) {
- // already joined, no message needs to be sent
- return
- }
-
- if channel.IsFull() {
- client.Send(nil, client.server.name, ERR_CHANNELISFULL, channel.name, "Cannot join channel (+l)")
- return
- }
-
- if !channel.CheckKey(key) {
- client.Send(nil, client.server.name, ERR_BADCHANNELKEY, channel.name, "Cannot join channel (+k)")
- return
- }
-
- isInvited := channel.lists[InviteMask].Match(client.nickMaskCasefolded)
- if channel.flags[InviteOnly] && !isInvited {
- client.Send(nil, client.server.name, ERR_INVITEONLYCHAN, channel.name, "Cannot join channel (+i)")
- return
- }
-
- if channel.lists[BanMask].Match(client.nickMaskCasefolded) &&
- !isInvited &&
- !channel.lists[ExceptMask].Match(client.nickMaskCasefolded) {
- client.Send(nil, client.server.name, ERR_BANNEDFROMCHAN, channel.name, "Cannot join channel (+b)")
- return
- }
-
- client.server.logger.Debug("join", fmt.Sprintf("%s joined channel %s", client.nick, channel.name))
-
- for member := range channel.members {
- if member.capabilities.Has(caps.ExtendedJoin) {
- member.Send(nil, client.nickMaskString, "JOIN", channel.name, client.account.Name, client.realname)
- } else {
- member.Send(nil, client.nickMaskString, "JOIN", channel.name)
- }
- }
-
- client.channels.Add(channel)
- channel.members.Add(client)
-
- // give channel mode if necessary
- var newChannel bool
- var givenMode *Mode
- client.server.registeredChannelsMutex.Lock()
- defer client.server.registeredChannelsMutex.Unlock()
- client.server.store.Update(func(tx *buntdb.Tx) error {
- chanReg := client.server.loadChannelNoMutex(tx, channel.nameCasefolded)
-
- if chanReg == nil {
- if len(channel.members) == 1 {
- channel.createdTime = time.Now()
- channel.members[client][ChannelOperator] = true
- givenMode = &ChannelOperator
- newChannel = true
- }
- } else {
- // we should only do this on registered channels
- if client.account != nil && client.account.Name == chanReg.Founder {
- channel.members[client][ChannelFounder] = true
- givenMode = &ChannelFounder
- }
- if len(channel.members) == 1 {
- // apply other details if new channel
- channel.topic = chanReg.Topic
- channel.topicSetBy = chanReg.TopicSetBy
- channel.topicSetTime = chanReg.TopicSetTime
- channel.name = chanReg.Name
- channel.createdTime = chanReg.RegisteredAt
- for _, mask := range chanReg.Banlist {
- channel.lists[BanMask].Add(mask)
- }
- for _, mask := range chanReg.Exceptlist {
- channel.lists[ExceptMask].Add(mask)
- }
- for _, mask := range chanReg.Invitelist {
- channel.lists[InviteMask].Add(mask)
- }
- }
- }
- return nil
- })
-
- if client.capabilities.Has(caps.ExtendedJoin) {
- client.Send(nil, client.nickMaskString, "JOIN", channel.name, client.account.Name, client.realname)
- } else {
- client.Send(nil, client.nickMaskString, "JOIN", channel.name)
- }
- // don't sent topic when it's an entirely new channel
- if !newChannel {
- channel.getTopicNoMutex(client) // we already have Lock
- }
- channel.namesNoMutex(client)
- if givenMode != nil {
- for member := range channel.members {
- member.Send(nil, client.server.name, "MODE", channel.name, fmt.Sprintf("+%v", *givenMode), client.nick)
- }
- }
- }
-
- // Part parts the given client from this channel, with the given message.
- func (channel *Channel) Part(client *Client, message string) {
- channel.membersMutex.Lock()
- defer channel.membersMutex.Unlock()
-
- if !channel.members.Has(client) {
- client.Send(nil, client.server.name, ERR_NOTONCHANNEL, channel.name, "You're not on that channel")
- return
- }
-
- for member := range channel.members {
- member.Send(nil, client.nickMaskString, "PART", channel.name, message)
- }
- channel.quitNoMutex(client)
-
- client.server.logger.Debug("part", fmt.Sprintf("%s left channel %s", client.nick, channel.name))
- }
-
- // GetTopic sends the channel topic to the given client.
- func (channel *Channel) GetTopic(client *Client) {
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- channel.getTopicNoMutex(client)
- }
-
- // GetTopic sends the channel topic to the given client without getting the membersMutex.
- // This is required because of channel joins.
- func (channel *Channel) getTopicNoMutex(client *Client) {
- if !channel.members.Has(client) {
- client.Send(nil, client.server.name, ERR_NOTONCHANNEL, client.nick, channel.name, "You're not on that channel")
- return
- }
-
- if channel.topic == "" {
- client.Send(nil, client.server.name, RPL_NOTOPIC, client.nick, channel.name, "No topic is set")
- return
- }
-
- client.Send(nil, client.server.name, RPL_TOPIC, client.nick, channel.name, channel.topic)
- client.Send(nil, client.server.name, RPL_TOPICTIME, client.nick, channel.name, channel.topicSetBy, strconv.FormatInt(channel.topicSetTime.Unix(), 10))
- }
-
- // SetTopic sets the topic of this channel, if the client is allowed to do so.
- func (channel *Channel) SetTopic(client *Client, topic string) {
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- if !(client.flags[Operator] || channel.members.Has(client)) {
- client.Send(nil, client.server.name, ERR_NOTONCHANNEL, channel.name, "You're not on that channel")
- return
- }
-
- if channel.flags[OpOnlyTopic] && !channel.ClientIsAtLeast(client, ChannelOperator) {
- client.Send(nil, client.server.name, ERR_CHANOPRIVSNEEDED, channel.name, "You're not a channel operator")
- return
- }
-
- if len(topic) > client.server.limits.TopicLen {
- topic = topic[:client.server.limits.TopicLen]
- }
-
- channel.topic = topic
- channel.topicSetBy = client.nickMaskString
- channel.topicSetTime = time.Now()
-
- for member := range channel.members {
- member.Send(nil, client.nickMaskString, "TOPIC", channel.name, channel.topic)
- }
-
- // update saved channel topic for registered chans
- client.server.registeredChannelsMutex.Lock()
- defer client.server.registeredChannelsMutex.Unlock()
-
- client.server.store.Update(func(tx *buntdb.Tx) error {
- chanInfo := client.server.loadChannelNoMutex(tx, channel.nameCasefolded)
-
- if chanInfo == nil {
- return nil
- }
-
- chanInfo.Topic = topic
- chanInfo.TopicSetBy = client.nickMaskString
- chanInfo.TopicSetTime = time.Now()
- client.server.saveChannelNoMutex(tx, channel.nameCasefolded, *chanInfo)
- return nil
- })
- }
-
- // CanSpeak returns true if the client can speak on this channel.
- func (channel *Channel) CanSpeak(client *Client) bool {
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- if channel.flags[NoOutside] && !channel.members.Has(client) {
- return false
- }
- if channel.flags[Moderated] && !channel.clientIsAtLeastNoMutex(client, Voice) {
- return false
- }
- if channel.flags[RegisteredOnly] && client.account == &NoAccount {
- return false
- }
- return true
- }
-
- // TagMsg sends a tag message to everyone in this channel who can accept them.
- func (channel *Channel) TagMsg(msgid string, minPrefix *Mode, clientOnlyTags *map[string]ircmsg.TagValue, client *Client) {
- channel.sendMessage(msgid, "TAGMSG", []caps.Capability{caps.MessageTags}, minPrefix, clientOnlyTags, client, nil)
- }
-
- // sendMessage sends a given message to everyone on this channel.
- func (channel *Channel) sendMessage(msgid, cmd string, requiredCaps []caps.Capability, minPrefix *Mode, clientOnlyTags *map[string]ircmsg.TagValue, client *Client, message *string) {
- if !channel.CanSpeak(client) {
- client.Send(nil, client.server.name, ERR_CANNOTSENDTOCHAN, channel.name, "Cannot send to channel")
- return
- }
-
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- // for STATUSMSG
- var minPrefixMode Mode
- if minPrefix != nil {
- minPrefixMode = *minPrefix
- }
- for member := range channel.members {
- if minPrefix != nil && !channel.ClientIsAtLeast(member, minPrefixMode) {
- // STATUSMSG
- continue
- }
- if member == client && !client.capabilities.Has(caps.EchoMessage) {
- continue
- }
-
- canReceive := true
- for _, capName := range requiredCaps {
- if !member.capabilities.Has(capName) {
- canReceive = false
- }
- }
- if !canReceive {
- continue
- }
-
- var messageTagsToUse *map[string]ircmsg.TagValue
- if member.capabilities.Has(caps.MessageTags) {
- messageTagsToUse = clientOnlyTags
- }
-
- if message == nil {
- member.SendFromClient(msgid, client, messageTagsToUse, cmd, channel.name)
- } else {
- member.SendFromClient(msgid, client, messageTagsToUse, cmd, channel.name, *message)
- }
- }
- }
-
- // SplitPrivMsg sends a private message to everyone in this channel.
- func (channel *Channel) SplitPrivMsg(msgid string, minPrefix *Mode, clientOnlyTags *map[string]ircmsg.TagValue, client *Client, message SplitMessage) {
- channel.sendSplitMessage(msgid, "PRIVMSG", minPrefix, clientOnlyTags, client, &message)
- }
-
- // SplitNotice sends a private message to everyone in this channel.
- func (channel *Channel) SplitNotice(msgid string, minPrefix *Mode, clientOnlyTags *map[string]ircmsg.TagValue, client *Client, message SplitMessage) {
- channel.sendSplitMessage(msgid, "NOTICE", minPrefix, clientOnlyTags, client, &message)
- }
-
- func (channel *Channel) sendSplitMessage(msgid, cmd string, minPrefix *Mode, clientOnlyTags *map[string]ircmsg.TagValue, client *Client, message *SplitMessage) {
- if !channel.CanSpeak(client) {
- client.Send(nil, client.server.name, ERR_CANNOTSENDTOCHAN, channel.name, "Cannot send to channel")
- return
- }
-
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- // for STATUSMSG
- var minPrefixMode Mode
- if minPrefix != nil {
- minPrefixMode = *minPrefix
- }
- for member := range channel.members {
- if minPrefix != nil && !channel.ClientIsAtLeast(member, minPrefixMode) {
- // STATUSMSG
- continue
- }
- if member == client && !client.capabilities.Has(caps.EchoMessage) {
- continue
- }
- var tagsToUse *map[string]ircmsg.TagValue
- if member.capabilities.Has(caps.MessageTags) {
- tagsToUse = clientOnlyTags
- }
-
- if message == nil {
- member.SendFromClient(msgid, client, tagsToUse, cmd, channel.name)
- } else {
- member.SendSplitMsgFromClient(msgid, client, tagsToUse, cmd, channel.name, *message)
- }
- }
- }
-
- func (channel *Channel) applyModeFlag(client *Client, mode Mode,
- op ModeOp) bool {
- if !channel.ClientIsAtLeast(client, ChannelOperator) {
- client.Send(nil, client.server.name, ERR_CHANOPRIVSNEEDED, channel.name, "You're not a channel operator")
- return false
- }
-
- switch op {
- case Add:
- if channel.flags[mode] {
- return false
- }
- channel.flags[mode] = true
- return true
-
- case Remove:
- if !channel.flags[mode] {
- return false
- }
- delete(channel.flags, mode)
- return true
- }
- return false
- }
-
- func (channel *Channel) applyModeMemberNoMutex(client *Client, mode Mode,
- op ModeOp, nick string) *ModeChange {
- // requires Lock()
-
- if nick == "" {
- //TODO(dan): shouldn't this be handled before it reaches this function?
- client.Send(nil, client.server.name, ERR_NEEDMOREPARAMS, "MODE", "Not enough parameters")
- return nil
- }
-
- casefoldedName, err := CasefoldName(nick)
- target := channel.server.clients.Get(casefoldedName)
- if err != nil || target == nil {
- client.Send(nil, client.server.name, ERR_NOSUCHNICK, client.nick, nick, "No such nick")
- return nil
- }
-
- if !channel.members.Has(target) {
- client.Send(nil, client.server.name, ERR_USERNOTINCHANNEL, client.nick, channel.name, "They aren't on that channel")
- return nil
- }
-
- switch op {
- case Add:
- if channel.members[target][mode] {
- return nil
- }
- channel.members[target][mode] = true
- return &ModeChange{
- op: Add,
- mode: mode,
- arg: nick,
- }
-
- case Remove:
- if !channel.members[target][mode] {
- return nil
- }
- channel.members[target][mode] = false
- return &ModeChange{
- op: Remove,
- mode: mode,
- arg: nick,
- }
- }
- return nil
- }
-
- // ShowMaskList shows the given list to the client.
- func (channel *Channel) ShowMaskList(client *Client, mode Mode) {
- // choose appropriate modes
- var rpllist, rplendoflist string
- if mode == BanMask {
- rpllist = RPL_BANLIST
- rplendoflist = RPL_ENDOFBANLIST
- } else if mode == ExceptMask {
- rpllist = RPL_EXCEPTLIST
- rplendoflist = RPL_ENDOFEXCEPTLIST
- } else if mode == InviteMask {
- rpllist = RPL_INVITELIST
- rplendoflist = RPL_ENDOFINVITELIST
- }
-
- // send out responses
- for mask := range channel.lists[mode].masks {
- client.Send(nil, client.server.name, rpllist, client.nick, channel.name, mask)
- }
- client.Send(nil, client.server.name, rplendoflist, client.nick, channel.name, "End of list")
- }
-
- func (channel *Channel) applyModeMask(client *Client, mode Mode, op ModeOp, mask string) bool {
- list := channel.lists[mode]
- if list == nil {
- // This should never happen, but better safe than panicky.
- return false
- }
-
- if (op == List) || (mask == "") {
- channel.ShowMaskList(client, mode)
- return false
- }
-
- if !channel.ClientIsAtLeast(client, ChannelOperator) {
- client.Send(nil, client.server.name, ERR_CHANOPRIVSNEEDED, channel.name, "You're not a channel operator")
- return false
- }
-
- if op == Add {
- return list.Add(mask)
- }
-
- if op == Remove {
- return list.Remove(mask)
- }
-
- return false
- }
-
- // Quit removes the given client from the channel, and also updates friends with the latest client list.
- func (channel *Channel) Quit(client *Client, friends *ClientSet) {
- channel.membersMutex.Lock()
- defer channel.membersMutex.Unlock()
-
- channel.quitNoMutex(client)
-
- for friend := range channel.members {
- friends.Add(friend)
- }
- }
-
- func (channel *Channel) quitNoMutex(client *Client) {
- channel.members.Remove(client)
- client.channels.Remove(channel)
-
- if channel.isEmptyNoMutex() {
- channel.server.channels.Remove(channel)
- }
- }
-
- func (channel *Channel) kickNoMutex(client *Client, target *Client, comment string) {
- // needs a Lock()
-
- if !(client.flags[Operator] || channel.members.Has(client)) {
- client.Send(nil, client.server.name, ERR_NOTONCHANNEL, channel.name, "You're not on that channel")
- return
- }
- if !channel.clientIsAtLeastNoMutex(client, ChannelOperator) {
- client.Send(nil, client.server.name, ERR_CANNOTSENDTOCHAN, channel.name, "Cannot send to channel")
- return
- }
- if !channel.members.Has(target) {
- client.Send(nil, client.server.name, ERR_USERNOTINCHANNEL, client.nick, channel.name, "They aren't on that channel")
- return
- }
-
- if len(comment) > client.server.limits.KickLen {
- comment = comment[:client.server.limits.KickLen]
- }
-
- for member := range channel.members {
- member.Send(nil, client.nickMaskString, "KICK", channel.name, target.nick, comment)
- }
- channel.quitNoMutex(target)
- }
-
- // Invite invites the given client to the channel, if the inviter can do so.
- func (channel *Channel) Invite(invitee *Client, inviter *Client) {
- if channel.flags[InviteOnly] && !channel.ClientIsAtLeast(inviter, ChannelOperator) {
- inviter.Send(nil, inviter.server.name, ERR_CHANOPRIVSNEEDED, channel.name, "You're not a channel operator")
- return
- }
-
- channel.membersMutex.RLock()
- defer channel.membersMutex.RUnlock()
-
- if !channel.members.Has(inviter) {
- inviter.Send(nil, inviter.server.name, ERR_NOTONCHANNEL, channel.name, "You're not on that channel")
- return
- }
-
- //TODO(dan): handle this more nicely, keep a list of last X invited channels on invitee rather than explicitly modifying the invite list?
- if channel.flags[InviteOnly] {
- channel.lists[InviteMask].Add(invitee.nickMaskCasefolded)
- }
-
- // send invite-notify
- for member := range channel.members {
- if member.capabilities.Has(caps.InviteNotify) && member != inviter && member != invitee && channel.ClientIsAtLeast(member, Halfop) {
- member.Send(nil, inviter.nickMaskString, "INVITE", invitee.nick, channel.name)
- }
- }
-
- //TODO(dan): should inviter.server.name here be inviter.nickMaskString ?
- inviter.Send(nil, inviter.server.name, RPL_INVITING, invitee.nick, channel.name)
- invitee.Send(nil, inviter.nickMaskString, "INVITE", invitee.nick, channel.name)
- if invitee.flags[Away] {
- inviter.Send(nil, inviter.server.name, RPL_AWAY, invitee.nick, invitee.awayMessage)
- }
- }
|