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Merge pull request #1009 from slingamn/issue1005_multiline_blanks

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fix #1005
This commit is contained in:
Shivaram Lingamneni 2020-05-15 05:07:29 -07:00 committed by GitHub
commit ade87463c2
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 40 additions and 28 deletions
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14
irc/client.go
View File

@ -146,6 +146,7 @@ type MultilineBatch struct {
target string
responseLabel string // this is the value of the labeled-response tag sent with BATCH
message utils.SplitMessage
lenBytes int
tags map[string]string
}
@ -168,14 +169,14 @@ func (s *Session) EndMultilineBatch(label string) (batch MultilineBatch, err err
s.fakelag.Unsuspend()
// heuristics to estimate how much data they used while fakelag was suspended
fakelagBill := (batch.message.LenBytes() / 512) + 1
fakelagBill := (batch.lenBytes / 512) + 1
fakelagBillLines := (batch.message.LenLines() * 60) / 512
if fakelagBill < fakelagBillLines {
fakelagBill = fakelagBillLines
}
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 +1358,14 @@ 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)

42
irc/handlers.go
View File

@ -1793,33 +1793,39 @@ 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
}
if !isConcat && len(rb.session.batch.message.Split) != 0 {
rb.session.batch.lenBytes++ // bill for the newline
}
rb.session.batch.message.Append(msg.Params[1], isConcat)
rb.session.batch.lenBytes += len(msg.Params[1])
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("")
if config.Limits.Multiline.MaxBytes < rb.session.batch.lenBytes {
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)
}
}

12
irc/utils/text.go
View File

@ -67,14 +67,14 @@ func (sm *SplitMessage) LenLines() int {
return len(sm.Split)
}
func (sm *SplitMessage) LenBytes() (result int) {
if sm.Split == nil {
return len(sm.Message)
}
func (sm *SplitMessage) ValidMultiline() bool {
// must contain at least one nonblank line
for i := 0; i < len(sm.Split); i++ {
result += len(sm.Split[i].Message)
if len(sm.Split[i].Message) != 0 {
return true
}
}
return
return false
}
func (sm *SplitMessage) IsRestrictedCTCPMessage() bool {