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Merge pull request #377 from slingamn/kickfail

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fix another three bugs that were reported today
This commit is contained in:
Daniel Oaks 2019-02-14 07:23:56 +10:00 committed by GitHub
commit a273ef624c
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 40 additions and 33 deletions
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49
irc/channel.go
View File

@ -241,12 +241,7 @@ func (channel *Channel) Names(client *Client, rb *ResponseBuffer) {
rb.Add(nil, client.server.name, RPL_ENDOFNAMES, client.nick, channel.name, client.t("End of NAMES list"))
}
// ClientIsAtLeast returns whether the client has at least the given channel privilege.
func (channel *Channel) ClientIsAtLeast(client *Client, permission modes.Mode) bool {
channel.stateMutex.RLock()
clientModes := channel.members[client]
channel.stateMutex.RUnlock()
func channelUserModeIsAtLeast(clientModes *modes.ModeSet, permission modes.Mode) bool {
if clientModes == nil {
return false
}
@ -264,6 +259,14 @@ func (channel *Channel) ClientIsAtLeast(client *Client, permission modes.Mode) b
return false
}
// ClientIsAtLeast returns whether the client has at least the given channel privilege.
func (channel *Channel) ClientIsAtLeast(client *Client, permission modes.Mode) bool {
channel.stateMutex.RLock()
clientModes := channel.members[client]
channel.stateMutex.RUnlock()
return channelUserModeIsAtLeast(clientModes, permission)
}
func (channel *Channel) ClientPrefixes(client *Client, isMultiPrefix bool) string {
channel.stateMutex.RLock()
defer channel.stateMutex.RUnlock()
@ -277,24 +280,26 @@ func (channel *Channel) ClientPrefixes(client *Client, isMultiPrefix bool) strin
func (channel *Channel) ClientHasPrivsOver(client *Client, target *Client) bool {
channel.stateMutex.RLock()
defer channel.stateMutex.RUnlock()
clientModes := channel.members[client]
targetModes := channel.members[target]
result := false
for _, mode := range modes.ChannelPrivModes {
if clientModes.HasMode(mode) {
result = true
channel.stateMutex.RUnlock()
if clientModes.HasMode(modes.ChannelFounder) {
// founder can kick anyone
return true
} else if clientModes.HasMode(modes.ChannelAdmin) {
// admins cannot kick other admins
if mode == modes.ChannelAdmin && targetModes.HasMode(modes.ChannelAdmin) {
result = false
return !channelUserModeIsAtLeast(targetModes, modes.ChannelAdmin)
} else if clientModes.HasMode(modes.ChannelOperator) {
// operators *can* kick other operators
return !channelUserModeIsAtLeast(targetModes, modes.ChannelAdmin)
} else if clientModes.HasMode(modes.Halfop) {
// halfops cannot kick other halfops
return !channelUserModeIsAtLeast(targetModes, modes.Halfop)
} else {
// voice and unprivileged cannot kick anyone
return false
}
break
} else if targetModes.HasMode(mode) {
break
}
}
return result
}
func (channel *Channel) hasClient(client *Client) bool {
@ -952,10 +957,6 @@ func (channel *Channel) Kick(client *Client, target *Client, comment string, rb
rb.Add(nil, client.server.name, ERR_NOTONCHANNEL, channel.name, client.t("You're not on that channel"))
return
}
if !channel.ClientIsAtLeast(client, modes.ChannelOperator) {
rb.Add(nil, client.server.name, ERR_CANNOTSENDTOCHAN, channel.name, client.t("Cannot send to channel"))
return
}
if !channel.hasClient(target) {
rb.Add(nil, client.server.name, ERR_USERNOTINCHANNEL, client.nick, channel.name, client.t("They aren't on that channel"))
return

16
irc/handlers.go
View File

@ -555,19 +555,21 @@ func chathistoryHandler(server *Server, client *Client, msg ircmsg.IrcMessage, r
newRb := NewResponseBuffer(client)
newRb.Label = rb.Label // same label, new batch
// TODO: send `WARN CHATHISTORY MAX_MESSAGES_EXCEEDED` when appropriate
if !success {
newRb.Add(nil, server.name, "ERR", "CHATHISTORY", "NEED_MORE_PARAMS")
} else if hist == nil {
if hist == nil {
newRb.Add(nil, server.name, "ERR", "CHATHISTORY", "NO_SUCH_CHANNEL")
} else if len(items) == 0 {
newRb.Add(nil, server.name, "ERR", "CHATHISTORY", "NO_TEXT_TO_SEND")
} else if !success {
newRb.Add(nil, server.name, "ERR", "CHATHISTORY", "NEED_MORE_PARAMS")
}
newRb.Send(true)
}()
target := msg.Params[0]
channel = server.channels.Get(target)
if channel != nil {
if channel != nil && channel.hasClient(client) {
// "If [...] the user does not have permission to view the requested content, [...]
// NO_SUCH_CHANNEL SHOULD be returned"
hist = &channel.history
} else {
targetClient := server.clients.Get(target)
@ -1019,7 +1021,7 @@ func historyHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *R
target := msg.Params[0]
var hist *history.Buffer
channel := server.channels.Get(target)
if channel != nil {
if channel != nil && channel.hasClient(client) {
hist = &channel.history
} else {
if strings.ToLower(target) == "me" {
@ -1036,7 +1038,11 @@ func historyHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *R
}
if hist == nil {
if channel == nil {
rb.Add(nil, server.name, ERR_NOSUCHCHANNEL, client.Nick(), target, client.t("No such channel"))
} else {
rb.Add(nil, server.name, ERR_NOTONCHANNEL, client.Nick(), target, client.t("You're not on that channel"))
}
return false
}

4
irc/modes.go
View File

@ -204,11 +204,11 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
switch change.Op {
case modes.Add:
channel.setKey(change.Arg)
applied = append(applied, change)
case modes.Remove:
channel.setKey("")
}
applied = append(applied, change)
}
case modes.InviteOnly, modes.Moderated, modes.NoOutside, modes.OpOnlyTopic, modes.RegisteredOnly, modes.Secret, modes.ChanRoleplaying:
if change.Op == modes.List {