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partial implementation of #729

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This propagates CS AMODE changes to the actual modes, but not the other
way around.

Also fixes #909.
This commit is contained in:
Shivaram Lingamneni 2020-03-25 12:08:08 -04:00
parent f4e9c79e36
commit f5fe580d22
6 changed files with 94 additions and 77 deletions
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18
irc/channel.go
View File

@ -1260,22 +1260,20 @@ func (channel *Channel) SendSplitMessage(command string, minPrefixMode modes.Mod
})
}
func (channel *Channel) applyModeToMember(client *Client, mode modes.Mode, op modes.ModeOp, nick string, rb *ResponseBuffer) (result *modes.ModeChange) {
target := channel.server.clients.Get(nick)
func (channel *Channel) applyModeToMember(client *Client, change modes.ModeChange, rb *ResponseBuffer) (applied bool, result modes.ModeChange) {
target := channel.server.clients.Get(change.Arg)
if target == nil {
rb.Add(nil, client.server.name, ERR_NOSUCHNICK, client.Nick(), utils.SafeErrorParam(nick), client.t("No such nick"))
return nil
rb.Add(nil, client.server.name, ERR_NOSUCHNICK, client.Nick(), utils.SafeErrorParam(change.Arg), client.t("No such nick"))
return
}
change.Arg = target.Nick()
channel.stateMutex.Lock()
modeset, exists := channel.members[target]
if exists {
if modeset.SetMode(mode, op == modes.Add) {
result = &modes.ModeChange{
Op: op,
Mode: mode,
Arg: nick,
}
if modeset.SetMode(change.Mode, change.Op == modes.Add) {
applied = true
result = change
}
}
channel.stateMutex.Unlock()

44
irc/chanserv.go
View File

@ -238,7 +238,16 @@ func csAmodeHandler(server *Server, client *Client, command string, params []str
}
case modes.Add, modes.Remove:
if len(affectedModes) > 0 {
csNotice(rb, fmt.Sprintf(client.t("Successfully set mode %s"), change.String()))
csNotice(rb, fmt.Sprintf(client.t("Successfully set persistent mode %s%s on %s"), string(change.Op), string(change.Mode), change.Arg))
// #729: apply change to current membership
for _, member := range channel.Members() {
if member.Account() == change.Arg {
applied, change := channel.applyModeToMember(client, change, rb)
if applied {
announceCmodeChanges(channel, modes.ModeChanges{change}, chanservMask, rb)
}
}
}
} else {
csNotice(rb, client.t("No changes were made"))
}
@ -275,14 +284,14 @@ func csOpHandler(server *Server, client *Client, command string, params []string
if clientAccount == target.Account() {
givenMode = modes.ChannelFounder
}
change := channelInfo.applyModeToMember(client, givenMode, modes.Add, target.NickCasefolded(), rb)
if change != nil {
//TODO(dan): we should change the name of String and make it return a slice here
//TODO(dan): unify this code with code in modes.go
args := append([]string{channelName}, strings.Split(change.String(), " ")...)
for _, member := range channelInfo.Members() {
member.Send(nil, fmt.Sprintf("ChanServ!services@%s", client.server.name), "MODE", args...)
}
applied, change := channelInfo.applyModeToMember(client,
modes.ModeChange{Mode: givenMode,
Op: modes.Add,
Arg: target.NickCasefolded(),
},
rb)
if applied {
announceCmodeChanges(channelInfo, modes.ModeChanges{change}, chanservMask, rb)
}
csNotice(rb, fmt.Sprintf(client.t("Successfully op'd in channel %s"), channelName))
@ -326,14 +335,15 @@ func csRegisterHandler(server *Server, client *Client, command string, params []
server.snomasks.Send(sno.LocalChannels, fmt.Sprintf(ircfmt.Unescape("Channel registered $c[grey][$r%s$c[grey]] by $c[grey][$r%s$c[grey]]"), channelName, client.nickMaskString))
// give them founder privs
change := channelInfo.applyModeToMember(client, modes.ChannelFounder, modes.Add, client.NickCasefolded(), rb)
if change != nil {
//TODO(dan): we should change the name of String and make it return a slice here
//TODO(dan): unify this code with code in modes.go
args := append([]string{channelName}, strings.Split(change.String(), " ")...)
for _, member := range channelInfo.Members() {
member.Send(nil, fmt.Sprintf("ChanServ!services@%s", client.server.name), "MODE", args...)
}
applied, change := channelInfo.applyModeToMember(client,
modes.ModeChange{
Mode: modes.ChannelFounder,
Op: modes.Add,
Arg: client.NickCasefolded(),
},
rb)
if applied {
announceCmodeChanges(channelInfo, modes.ModeChanges{change}, chanservMask, rb)
}
}

39
irc/handlers.go
View File

@ -1530,38 +1530,25 @@ func cmodeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
}
// process mode changes, include list operations (an empty set of changes does a list)
applied := channel.ApplyChannelModeChanges(client, msg.Command == "SAMODE", changes, rb)
announceCmodeChanges(channel, applied, client.NickMaskString(), rb)
// save changes
var includeFlags uint
for _, change := range applied {
includeFlags |= IncludeModes
if change.Mode == modes.BanMask || change.Mode == modes.ExceptMask || change.Mode == modes.InviteMask {
includeFlags |= IncludeLists
}
}
if includeFlags != 0 {
channel.MarkDirty(includeFlags)
}
return false
}
func announceCmodeChanges(channel *Channel, applied modes.ModeChanges, source string, rb *ResponseBuffer) {
// send out changes
if len(applied) > 0 {
prefix := client.NickMaskString()
//TODO(dan): we should change the name of String and make it return a slice here
args := append([]string{channel.name}, strings.Split(applied.String(), " ")...)
rb.Add(nil, prefix, "MODE", args...)
for _, session := range client.Sessions() {
if session != rb.session {
session.Send(nil, prefix, "MODE", args...)
}
}
args := append([]string{channel.name}, applied.Strings()...)
rb.Add(nil, source, "MODE", args...)
for _, member := range channel.Members() {
if member != client {
member.Send(nil, prefix, "MODE", args...)
for _, session := range member.Sessions() {
if session != rb.session {
session.Send(nil, source, "MODE", args...)
}
}
}
}
return false
}
// MODE <client> [<modestring> [<mode arguments>...]]
@ -1606,7 +1593,8 @@ func umodeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
}
if len(applied) > 0 {
rb.Add(nil, cDetails.nickMask, "MODE", targetNick, applied.String())
args := append([]string{targetNick}, applied.Strings()...)
rb.Add(nil, cDetails.nickMask, "MODE", args...)
} else if hasPrivs {
rb.Add(nil, server.name, RPL_UMODEIS, targetNick, target.ModeString())
if target.HasMode(modes.LocalOperator) || target.HasMode(modes.Operator) {
@ -2122,7 +2110,8 @@ func applyOper(client *Client, oper *Oper, rb *ResponseBuffer) {
client.server.snomasks.Send(sno.LocalOpers, fmt.Sprintf(ircfmt.Unescape("Client opered up $c[grey][$r%s$c[grey], $r%s$c[grey]]"), newDetails.nickMask, oper.Name))
rb.Broadcast(nil, client.server.name, RPL_YOUREOPER, details.nick, client.t("You are now an IRC operator"))
rb.Broadcast(nil, client.server.name, "MODE", details.nick, applied.String())
args := append([]string{details.nick}, applied.Strings()...)
rb.Broadcast(nil, client.server.name, "MODE", args...)
} else {
client.server.snomasks.Send(sno.LocalOpers, fmt.Sprintf(ircfmt.Unescape("Client deopered $c[grey][$r%s$c[grey]]"), newDetails.nickMask))
}

21
irc/modes.go
View File

@ -256,13 +256,28 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
continue
}
change := channel.applyModeToMember(client, change.Mode, change.Op, nick, rb)
if change != nil {
applied = append(applied, *change)
success, change := channel.applyModeToMember(client, change, rb)
if success {
applied = append(applied, change)
}
}
}
var includeFlags uint
for _, change := range applied {
switch change.Mode {
case modes.BanMask, modes.ExceptMask, modes.InviteMask:
includeFlags |= IncludeLists
case modes.ChannelFounder, modes.ChannelAdmin, modes.ChannelOperator, modes.Halfop, modes.Voice:
// these are never persisted currently, but might be in the future (see discussion on #729)
default:
includeFlags |= IncludeModes
}
}
if includeFlags != 0 {
channel.MarkDirty(includeFlags)
}
// #649: don't send 324 RPL_CHANNELMODEIS if we were only working with mask lists
if len(applied) == 0 && !alreadySentPrivError && (maskOpCount == 0 || maskOpCount < len(changes)) {
args := append([]string{details.nick, chname}, channel.modeStrings(client)...)

33
irc/modes/modes.go
View File

@ -28,10 +28,6 @@ var (
// ModeOp is an operation performed with modes
type ModeOp rune
func (op ModeOp) String() string {
return string(op)
}
const (
// Add is used when adding the given key.
Add ModeOp = '+'
@ -55,43 +51,36 @@ type ModeChange struct {
Arg string
}
func (change *ModeChange) String() (str string) {
if (change.Op == Add) || (change.Op == Remove) {
str = change.Op.String()
}
str += change.Mode.String()
if change.Arg != "" {
str += " " + change.Arg
}
return
}
// ModeChanges are a collection of 'ModeChange's
type ModeChanges []ModeChange
func (changes ModeChanges) String() string {
func (changes ModeChanges) Strings() (result []string) {
if len(changes) == 0 {
return ""
return
}
var builder strings.Builder
op := changes[0].Op
str := changes[0].Op.String()
builder.WriteRune(rune(op))
for _, change := range changes {
if change.Op != op {
op = change.Op
str += change.Op.String()
builder.WriteRune(rune(op))
}
str += change.Mode.String()
builder.WriteRune(rune(change.Mode))
}
result = append(result, builder.String())
for _, change := range changes {
if change.Arg == "" {
continue
}
str += " " + change.Arg
result = append(result, change.Arg)
}
return str
return
}
// Modes is just a raw list of modes

16
irc/modes/modes_test.go
View File

@ -219,6 +219,22 @@ func TestHighestChannelUserMode(t *testing.T) {
}
}
func TestModeChangesString(t *testing.T) {
m := ModeChanges{
ModeChange{Op: Add, Mode: RegisteredOnly},
ModeChange{Op: Add, Mode: Key, Arg: "beer"},
ModeChange{Op: Add, Mode: BanMask, Arg: "shivaram"},
}
assertEqual(m.Strings(), []string{"+Rkb", "beer", "shivaram"}, t)
m = ModeChanges{
ModeChange{Op: Add, Mode: RegisteredOnly},
ModeChange{Op: Remove, Mode: Key, Arg: "beer"},
ModeChange{Op: Add, Mode: BanMask, Arg: "shivaram"},
}
assertEqual(m.Strings(), []string{"+R-k+b", "beer", "shivaram"}, t)
}
func BenchmarkModeString(b *testing.B) {
set := NewModeSet()
set.SetMode('A', true)