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increase max cap line length

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Workaround for #661: this makes the `CAP LS 302` line from the default config
fit on a single line, as long as the server name is at most 35 characters.
This commit is contained in:
Shivaram Lingamneni 2019-11-09 20:31:56 -05:00
parent a75d26a46b
commit ae9aecbbb0
4 changed files with 20 additions and 12 deletions
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9
irc/caps/set.go
View File

@ -89,12 +89,15 @@ func (s *Set) Empty() bool {
return utils.BitsetEmpty(s[:])
}
const maxPayloadLength = 440
const defaultMaxPayloadLength = 450
// Strings returns all of our enabled capabilities as a slice of strings.
func (s *Set) Strings(version Version, values Values) (result []string) {
func (s *Set) Strings(version Version, values Values, maxLen int) (result []string) {
if maxLen == 0 {
maxLen = defaultMaxPayloadLength
}
var t utils.TokenLineBuilder
t.Initialize(maxPayloadLength, " ")
t.Initialize(maxLen, " ")
var capab Capability
asSlice := s[:]

4
irc/caps/set_test.go
View File

@ -47,13 +47,13 @@ func TestSets(t *testing.T) {
values := make(Values)
values[InviteNotify] = "invitemepls"
actualCap301ValuesString := s1.Strings(Cap301, values)
actualCap301ValuesString := s1.Strings(Cap301, values, 0)
expectedCap301ValuesString := []string{"invite-notify userhost-in-names"}
if !reflect.DeepEqual(actualCap301ValuesString, expectedCap301ValuesString) {
t.Errorf("Generated Cap301 values string [%v] did not match expected values string [%v]", actualCap301ValuesString, expectedCap301ValuesString)
}
actualCap302ValuesString := s1.Strings(Cap302, values)
actualCap302ValuesString := s1.Strings(Cap302, values, 0)
expectedCap302ValuesString := []string{"invite-notify=invitemepls userhost-in-names"}
if !reflect.DeepEqual(actualCap302ValuesString, expectedCap302ValuesString) {
t.Errorf("Generated Cap302 values string [%s] did not match expected values string [%s]", actualCap302ValuesString, expectedCap302ValuesString)

11
irc/handlers.go
View File

@ -569,9 +569,14 @@ func capHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Respo
sendCapLines := func(cset *caps.Set, values caps.Values) {
version := rb.session.capVersion
capLines := cset.Strings(version, values)
// weechat 1.4 has a bug here where it won't accept the CAP reply unless it contains
// the server.name source:
// we're working around two bugs:
// 1. weechat 1.4 won't accept the CAP reply unless it contains the server.name source
// 2. old versions of Kiwi and The Lounge can't parse multiline CAP LS 302 (#661),
// so try as hard as possible to get the response to fit on one line.
// :server.name CAP * LS * :<tokens>
// 1 7 4
maxLen := 510 - 1 - len(server.name) - 7 - len(subCommand) - 4
capLines := cset.Strings(version, values, maxLen)
for i, capStr := range capLines {
if version >= caps.Cap302 && i < len(capLines)-1 {
rb.Add(nil, server.name, "CAP", details.nick, subCommand, "*", capStr)

8
irc/server.go
View File

@ -710,17 +710,17 @@ func (server *Server) applyConfig(config *Config, initial bool) (err error) {
// updated caps get DEL'd and then NEW'd
// so, we can just add updated ones to both removed and added lists here and they'll be correctly handled
server.logger.Debug("server", "Updated Caps", strings.Join(updatedCaps.Strings(caps.Cap301, config.Server.capValues), " "))
server.logger.Debug("server", "Updated Caps", strings.Join(updatedCaps.Strings(caps.Cap301, config.Server.capValues, 0), " "))
addedCaps.Union(updatedCaps)
removedCaps.Union(updatedCaps)
if !addedCaps.Empty() || !removedCaps.Empty() {
capBurstSessions = server.clients.AllWithCapsNotify()
added[caps.Cap301] = addedCaps.Strings(caps.Cap301, config.Server.capValues)
added[caps.Cap302] = addedCaps.Strings(caps.Cap302, config.Server.capValues)
added[caps.Cap301] = addedCaps.Strings(caps.Cap301, config.Server.capValues, 0)
added[caps.Cap302] = addedCaps.Strings(caps.Cap302, config.Server.capValues, 0)
// removed never has values, so we leave it as Cap301
removed = removedCaps.Strings(caps.Cap301, config.Server.capValues)
removed = removedCaps.Strings(caps.Cap301, config.Server.capValues, 0)
}
for _, sSession := range capBurstSessions {