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MONITOR: Fix display of long lists

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This commit is contained in:
Daniel Oaks 2016-10-23 20:24:02 +10:00
parent 194fa9af9f
commit 1092caa190
5 changed files with 56 additions and 11 deletions
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1
CHANGELOG.md
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@ -20,6 +20,7 @@ New release of Oragono!
### Fixed
* Fixed bug where `HELP` wouldn't correctly display for operators, and added more help topics.
* Fixed display of large `MONITOR` lists.
## [0.3.0] - 2016-10-23

4
irc/constants.go
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@ -15,4 +15,8 @@ const (
var (
// Ver is the full version of Oragono, used in responses to clients.
Ver = fmt.Sprintf("oragono-%s", SemVer)
// maxLastArgLength is used to simply cap off the final argument when creating general messages where we need to select a limit.
// for instance, in MONITOR lists, RPL_ISUPPORT lists, etc.
maxLastArgLength = 400
)

13
irc/isupport.go
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@ -6,7 +6,6 @@ package irc
import "fmt"
const isupportSupportedString = "are supported by this server"
const maxISupportLength = 400 // Max length of a single ISUPPORT token line
// ISupportList holds a list of ISUPPORT tokens
type ISupportList struct {
@ -55,7 +54,7 @@ func (il *ISupportList) GetDifference(newil *ISupportList) [][]string {
token := fmt.Sprintf("-%s", name)
if len(token)+length <= maxISupportLength {
if len(token)+length <= maxLastArgLength {
// account for the space separating tokens
if len(cache) > 0 {
length++
@ -64,7 +63,7 @@ func (il *ISupportList) GetDifference(newil *ISupportList) [][]string {
length += len(token)
}
if len(cache) == 13 || len(token)+length >= maxISupportLength {
if len(cache) == 13 || len(token)+length >= maxLastArgLength {
cache = append(cache, isupportSupportedString)
replies = append(replies, cache)
cache = make([]string, 0)
@ -81,7 +80,7 @@ func (il *ISupportList) GetDifference(newil *ISupportList) [][]string {
token := getTokenString(name, value)
if len(token)+length <= maxISupportLength {
if len(token)+length <= maxLastArgLength {
// account for the space separating tokens
if len(cache) > 0 {
length++
@ -90,7 +89,7 @@ func (il *ISupportList) GetDifference(newil *ISupportList) [][]string {
length += len(token)
}
if len(cache) == 13 || len(token)+length >= maxISupportLength {
if len(cache) == 13 || len(token)+length >= maxLastArgLength {
cache = append(cache, isupportSupportedString)
replies = append(replies, cache)
cache = make([]string, 0)
@ -115,7 +114,7 @@ func (il *ISupportList) RegenerateCachedReply() {
for name, value := range il.Tokens {
token := getTokenString(name, value)
if len(token)+length <= maxISupportLength {
if len(token)+length <= maxLastArgLength {
// account for the space separating tokens
if len(cache) > 0 {
length++
@ -124,7 +123,7 @@ func (il *ISupportList) RegenerateCachedReply() {
length += len(token)
}
if len(cache) == 13 || len(token)+length >= maxISupportLength {
if len(cache) == 13 || len(token)+length >= maxLastArgLength {
cache = append(cache, isupportSupportedString)
il.CachedReply = append(il.CachedReply, cache)
cache = make([]string, 0)

14
irc/monitor.go
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@ -116,7 +116,7 @@ func monitorAddHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bo
targets := strings.Split(msg.Params[1], ",")
for len(targets) > 0 {
// check name length
if len(targets[0]) < 1 {
if len(targets[0]) < 1 || len(targets[0]) > server.limits.NickLen {
targets = targets[1:]
continue
}
@ -176,7 +176,9 @@ func monitorListHandler(server *Server, client *Client, msg ircmsg.IrcMessage) b
monitorList = append(monitorList, name)
}
client.Send(nil, server.name, RPL_MONLIST, client.nick, strings.Join(monitorList, ","))
for _, line := range argsToStrings(maxLastArgLength, monitorList, ",") {
client.Send(nil, server.name, RPL_MONLIST, client.nick, line)
}
return false
}
@ -195,10 +197,14 @@ func monitorStatusHandler(server *Server, client *Client, msg ircmsg.IrcMessage)
}
if len(online) > 0 {
client.Send(nil, server.name, RPL_MONONLINE, client.nick, strings.Join(online, ","))
for _, line := range argsToStrings(maxLastArgLength, online, ",") {
client.Send(nil, server.name, RPL_MONONLINE, client.nick, line)
}
}
if len(offline) > 0 {
client.Send(nil, server.name, RPL_MONOFFLINE, client.nick, strings.Join(offline, ","))
for _, line := range argsToStrings(maxLastArgLength, offline, ",") {
client.Send(nil, server.name, RPL_MONOFFLINE, client.nick, line)
}
}
return false

35
irc/util.go Normal file
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@ -0,0 +1,35 @@
// Copyright (c) 2016- Daniel Oaks <daniel@danieloaks.net>
// released under the MIT license
package irc
// argsToStrings takes the arguments and splits them into a series of strings,
// each argument separated by delim and each string bounded by maxLength.
func argsToStrings(maxLength int, arguments []string, delim string) []string {
var messages []string
var buffer string
for {
if len(arguments) < 1 {
break
}
if len(buffer) > 0 && maxLength < len(buffer)+len(delim)+len(arguments[0]) {
messages = append(messages, buffer)
buffer = ""
continue
}
if len(buffer) > 1 {
buffer += delim
}
buffer += arguments[0]
arguments = arguments[1:]
}
if len(buffer) > 0 {
messages = append(messages, buffer)
}
return messages
}