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fix #1005

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This commit is contained in:
Shivaram Lingamneni 2020-05-14 12:58:49 -04:00
parent a46c0eed9f
commit 2779fe7c10
3 changed files with 41 additions and 20 deletions
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11
irc/client.go
View File

@ -175,7 +175,7 @@ func (s *Session) EndMultilineBatch(label string) (batch MultilineBatch, err err
}
s.deferredFakelagCount = fakelagBill
if batch.label == "" || batch.label != label || batch.message.LenLines() == 0 {
if batch.label == "" || batch.label != label || !batch.message.ValidMultiline() {
err = errInvalidMultilineBatch
return
}
@ -1357,9 +1357,14 @@ func (session *Session) sendSplitMsgFromClientInternal(blocking bool, nickmask,
session.SendRawMessage(msg, blocking)
}
} else {
for i, messagePair := range message.Split {
msgidSent := false // send msgid on the first nonblank line
for _, messagePair := range message.Split {
if len(messagePair.Message) == 0 {
continue
}
var msgid string
if i == 0 {
if !msgidSent {
msgidSent = true
msgid = message.Msgid
}
session.sendFromClientInternal(blocking, message.Time, msgid, nickmask, accountName, tags, command, target, messagePair.Message)

36
irc/handlers.go
View File

@ -1793,33 +1793,35 @@ func nickHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Resp
// helper to store a batched PRIVMSG in the session object
func absorbBatchedMessage(server *Server, client *Client, msg ircmsg.IrcMessage, batchTag string, histType history.ItemType, rb *ResponseBuffer) {
var errorCode, errorMessage string
defer func() {
if errorCode != "" {
if histType != history.Notice {
rb.Add(nil, server.name, "FAIL", "BATCH", errorCode, errorMessage)
}
rb.session.EndMultilineBatch("")
}
}()
if batchTag != rb.session.batch.label {
if histType != history.Notice {
rb.Add(nil, server.name, "FAIL", "BATCH", "MULTILINE_INVALID", client.t("Incorrect batch tag sent"))
}
rb.session.EndMultilineBatch("")
errorCode, errorMessage = "MULTILINE_INVALID", client.t("Incorrect batch tag sent")
return
} else if len(msg.Params) < 2 || msg.Params[1] == "" {
if histType != history.Notice {
rb.Add(nil, server.name, "FAIL", "BATCH", "MULTILINE_INVALID", client.t("Invalid multiline batch"))
}
rb.session.EndMultilineBatch("")
} else if len(msg.Params) < 2 {
errorCode, errorMessage = "MULTILINE_INVALID", client.t("Invalid multiline batch")
return
}
rb.session.batch.command = msg.Command
isConcat, _ := msg.GetTag(caps.MultilineConcatTag)
if isConcat && len(msg.Params[1]) == 0 {
errorCode, errorMessage = "MULTILINE_INVALID", client.t("Cannot send a blank line with the multiline concat tag")
return
}
rb.session.batch.message.Append(msg.Params[1], isConcat)
config := server.Config()
if config.Limits.Multiline.MaxBytes < rb.session.batch.message.LenBytes() {
if histType != history.Notice {
rb.Add(nil, server.name, "FAIL", "BATCH", "MULTILINE_MAX_BYTES", strconv.Itoa(config.Limits.Multiline.MaxBytes))
}
rb.session.EndMultilineBatch("")
errorCode, errorMessage = "MULTILINE_MAX_BYTES", strconv.Itoa(config.Limits.Multiline.MaxBytes)
} else if config.Limits.Multiline.MaxLines != 0 && config.Limits.Multiline.MaxLines < rb.session.batch.message.LenLines() {
if histType != history.Notice {
rb.Add(nil, server.name, "FAIL", "BATCH", "MULTILINE_MAX_LINES", strconv.Itoa(config.Limits.Multiline.MaxLines))
}
rb.session.EndMultilineBatch("")
errorCode, errorMessage = "MULTILINE_MAX_LINES", strconv.Itoa(config.Limits.Multiline.MaxLines)
}
}

14
irc/utils/text.go
View File

@ -73,10 +73,24 @@ func (sm *SplitMessage) LenBytes() (result int) {
}
for i := 0; i < len(sm.Split); i++ {
result += len(sm.Split[i].Message)
// bill for the joining newline if necessary
if i != 0 && !sm.Split[i].Concat {
result += 1
}
}
return
}
func (sm *SplitMessage) ValidMultiline() bool {
// must contain at least one nonblank line
for i := 0; i < len(sm.Split); i++ {
if len(sm.Split[i].Message) != 0 {
return true
}
}
return false
}
func (sm *SplitMessage) IsRestrictedCTCPMessage() bool {
if IsRestrictedCTCPMessage(sm.Message) {
return true