func cmdOpflags(source interface{}, params [][]byte) {
c := source.(*Client)
channame := string(params[0])
if channame[0] == '#' {
channame = channame[1:]
}
var ch *core.Channel
if ch = core.FindChannel("", channame); ch == nil {
c.SendLineTo(nil, "403", "#%s :No such channel.", channame)
return
}
// If the user isn't on the channel, don't let them check unless they
// can view private channel data.
if m := ch.GetMember(c.u); m == nil {
if ok, err := perm.CheckChanViewData(me, c.u, ch, "members"); !ok {
c.SendLineTo(nil, "482", "#%s :%s", ch.Name(), err)
return
}
}
var target *core.User
if target = core.GetUserByNick(string(params[1])); target == nil {
c.SendLineTo(nil, "401", "%s :No such user.", params[1])
return
}
var m *core.Membership
if m = ch.GetMember(target); m == nil {
c.SendLineTo(nil, "304", ":OPFLAGS #%s: %s is not in the channel.", ch.Name(), target.Nick())
return
}
if ok, err := perm.CheckMemberViewData(me, c.u, m, "op"); !ok {
c.SendLineTo(nil, "482", "#%s :%s: %s", ch.Name(), target.Nick(), err)
return
}
var flags string
if flags = m.Data("op"); flags == "" {
c.SendLineTo(nil, "304", ":OPFLAGS #%s: %s has no channel op flags.", ch.Name(), target.Nick())
return
}
if flags == "on" {
flags = perm.DefaultChanOp()
}
c.SendLineTo(nil, "304", ":OPFLAGS #%s: %s has channel op flags: %s", ch.Name(), target.Nick(), flags)
}
// Function handling processing of extended op syntax into metadata.
// It returns the data change object.
func processOp(adding bool, ch *core.Channel, param string) []core.DataChange {
var change core.DataChange
change.Name = "op"
change.Data = perm.DefaultChanOp()
// Find a colon, indicating extended op syntax.
var colon, mask int
colon = strings.IndexRune(param, ':')
if colon > -1 && len(param) > colon+1 {
mask = colon + 1
} else {
colon = -1
}
// Set the member this opping refers to.
if target := core.GetUserByNick(param[mask:]); target != nil {
if m := ch.GetMember(target); m != nil {
change.Member = m
} else {
return nil
}
} else {
return nil
}
// If a colon exists, treat everything before it as opflags.
if colon > -1 {
change.Data = ""
for _, char := range param[:colon] {
if v := Flags.Str(char); v != "" {
if change.Data != "" {
change.Data += " "
}
change.Data += v
}
}
}
// Get the existing op flags, expanding default ops.
existingData := change.Member.Data("op")
words := strings.Fields(existingData)
var existing string
for _, word := range words {
if word == "on" {
word = perm.DefaultChanOp()
}
if existing != "" {
existing += " "
}
existing += word
}
if adding {
// If we're adding the ban, add the new restrictions to the
// previous restrictions.
if existing != "" {
words := strings.Fields(existing)
remwords := strings.Fields(change.Data)
for _, flag := range words {
var found bool
for _, w := range remwords {
if w == flag {
found = true
break
}
}
if !found {
if change.Data != "" {
change.Data += " "
}
change.Data += flag
}
}
}
} else {
// If we're removing the ban, remove the removed restrictions.
// Leave restrictions not removed alone.
// This is "fun". This is also O(n^2).
var left string
if existing != "" {
words := strings.Fields(existing)
remwords := strings.Fields(change.Data)
for _, flag := range words {
var found bool
for _, w := range remwords {
if w == flag {
found = true
break
}
}
if !found && Flags.Char(flag) != 0 {
if left != "" {
left += " "
}
left += flag
}
}
}
change.Data = left
}
// Test for whether we have a default restriction.
var outsideDefault bool
var missingDefault bool
defwords := strings.Fields(perm.DefaultChanOp())
words = strings.Fields(change.Data)
for _, word := range words {
var found bool
for _, defword := range defwords {
if defword == word {
found = true
break
}
}
if !found {
outsideDefault = true
break
}
}
if !outsideDefault {
for _, defword := range defwords {
var found bool
for _, word := range words {
if defword == word {
found = true
break
}
}
if !found {
missingDefault = true
break
}
}
}
// If the restriction is the same as the default restriction, quietly
// change it to "on".
if !outsideDefault && !missingDefault {
change.Data = "on"
}
return []core.DataChange{change}
}