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Code Issues Projects Releases Wiki Activity

history replay enhancements

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This commit is contained in:
Shivaram Lingamneni 2018-12-28 13:45:55 -05:00
parent f3d138d909
commit 2c7c8fbaf9
18 changed files with 264 additions and 255 deletions
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2
README.md
View File

@ -129,7 +129,7 @@ Make sure to setup [SASL](https://freenode.net/kb/answer/sasl) in your client to
* Niels Freier, added WebSocket support to Ergonomadic, <https://github.com/stumpyfr>
* Daniel Oakley, maintainer of Oragono, <https://github.com/DanielOaks>
* Euan Kemp, contributor to Oragono and lots of useful fixes, <https://github.com/euank>
* Shivaram Lingamneni, has contributed a ton of fixes, refactoring, and general improvements, <https://github.com/slingamn>
* Shivaram Lingamneni, co-maintainer of Oragono, <https://github.com/slingamn>
* James Mills, contributed Docker support, <https://github.com/prologic>
* Vegax, implementing some commands and helping when Oragono was just getting started, <https://github.com/vegax87>
* Sean Enck, transitioned us from using a custom script to a proper Makefile, <https://github.com/enckse>

78
irc/batch.go
View File

@ -1,78 +0,0 @@
// Copyright (c) 2017 Daniel Oaks <daniel@danieloaks.net>
// released under the MIT license
package irc
import (
"strconv"
"time"
"github.com/goshuirc/irc-go/ircmsg"
"github.com/oragono/oragono/irc/caps"
)
const (
// maxBatchID is the maximum ID the batch counter can get to before it rotates.
//
// Batch IDs are made up of the current unix timestamp plus a rolling int ID that's
// incremented for every new batch. It's an alright solution and will work unless we get
// more than maxId batches per nanosecond. Later on when we have S2S linking, the batch
// ID will also contain the server ID to ensure they stay unique.
maxBatchID uint64 = 60000
)
// BatchManager helps generate new batches and new batch IDs.
type BatchManager struct {
idCounter uint64
}
// NewBatchManager returns a new Manager.
func NewBatchManager() *BatchManager {
return &BatchManager{}
}
// NewID returns a new batch ID that should be unique.
func (bm *BatchManager) NewID() string {
bm.idCounter++
if maxBatchID < bm.idCounter {
bm.idCounter = 0
}
return strconv.FormatInt(time.Now().UnixNano(), 36) + strconv.FormatUint(bm.idCounter, 36)
}
// Batch represents an IRCv3 batch.
type Batch struct {
ID string
Type string
Params []string
}
// New returns a new batch.
func (bm *BatchManager) New(batchType string, params ...string) *Batch {
newBatch := Batch{
ID: bm.NewID(),
Type: batchType,
Params: params,
}
return &newBatch
}
// Start sends the batch start message to this client
func (b *Batch) Start(client *Client, tags *map[string]ircmsg.TagValue) {
if client.capabilities.Has(caps.Batch) {
params := []string{"+" + b.ID, b.Type}
for _, param := range b.Params {
params = append(params, param)
}
client.Send(tags, client.server.name, "BATCH", params...)
}
}
// End sends the batch end message to this client
func (b *Batch) End(client *Client) {
if client.capabilities.Has(caps.Batch) {
client.Send(nil, client.server.name, "BATCH", "-"+b.ID)
}
}

108
irc/channel.go
View File

@ -38,7 +38,7 @@ type Channel struct {
topic string
topicSetBy string
topicSetTime time.Time
userLimit uint64
userLimit int
accountToUMode map[string]modes.Mode
history history.Buffer
}
@ -332,25 +332,12 @@ func (channel *Channel) modeStrings(client *Client) (result []string) {
result = append(result, channel.key)
}
if showUserLimit {
result = append(result, strconv.FormatUint(channel.userLimit, 10))
result = append(result, strconv.Itoa(channel.userLimit))
}
return
}
// IsFull returns true if this channel is at its' members limit.
func (channel *Channel) IsFull() bool {
channel.stateMutex.RLock()
defer channel.stateMutex.RUnlock()
return (channel.userLimit > 0) && (uint64(len(channel.members)) >= channel.userLimit)
}
// CheckKey returns true if the key is not set or matches the given key.
func (channel *Channel) CheckKey(key string) bool {
chkey := channel.Key()
return chkey == "" || utils.SecretTokensMatch(chkey, key)
}
func (channel *Channel) IsEmpty() bool {
channel.stateMutex.RLock()
defer channel.stateMutex.RUnlock()
@ -359,26 +346,31 @@ func (channel *Channel) IsEmpty() bool {
// Join joins the given client to this channel (if they can be joined).
func (channel *Channel) Join(client *Client, key string, isSajoin bool, rb *ResponseBuffer) {
if channel.hasClient(client) {
// already joined, no message needs to be sent
return
}
channel.stateMutex.RLock()
chname := channel.name
chcfname := channel.nameCasefolded
founder := channel.registeredFounder
chkey := channel.key
limit := channel.userLimit
chcount := len(channel.members)
_, alreadyJoined := channel.members[client]
channel.stateMutex.RUnlock()
if alreadyJoined {
// no message needs to be sent
return
}
account := client.Account()
nickMaskCasefolded := client.NickMaskCasefolded()
hasPrivs := isSajoin || (founder != "" && founder == account)
if !hasPrivs && channel.IsFull() {
if !hasPrivs && limit != 0 && chcount >= limit {
rb.Add(nil, client.server.name, ERR_CHANNELISFULL, chname, fmt.Sprintf(client.t("Cannot join channel (+%s)"), "l"))
return
}
if !hasPrivs && !channel.CheckKey(key) {
if !hasPrivs && chkey != "" && !utils.SecretTokensMatch(chkey, key) {
rb.Add(nil, client.server.name, ERR_BADCHANNELKEY, chname, fmt.Sprintf(client.t("Cannot join channel (+%s)"), "k"))
return
}
@ -469,7 +461,18 @@ func (channel *Channel) Join(client *Client, key string, isSajoin bool, rb *Resp
Type: history.Join,
Nick: nickmask,
AccountName: accountName,
Msgid: realname,
})
// TODO #259 can be implemented as Flush(false) (i.e., nonblocking) while holding joinPartMutex
rb.Flush(true)
replayLimit := channel.server.Config().History.AutoreplayOnJoin
if replayLimit > 0 {
items := channel.history.Latest(replayLimit)
channel.replayHistoryItems(rb, items)
rb.Flush(true)
}
}
// Part parts the given client from this channel, with the given message.
@ -506,7 +509,7 @@ func (channel *Channel) Resume(newClient, oldClient *Client, timestamp time.Time
now := time.Now()
channel.resumeAndAnnounce(newClient, oldClient)
if !timestamp.IsZero() {
channel.replayHistory(newClient, timestamp, now)
channel.replayHistoryForResume(newClient, timestamp, now)
}
}
@ -560,7 +563,6 @@ func (channel *Channel) resumeAndAnnounce(newClient, oldClient *Client) {
rb := NewResponseBuffer(newClient)
// use blocking i/o to synchronize with the later history replay
rb.SetBlocking(true)
if newClient.capabilities.Has(caps.ExtendedJoin) {
rb.Add(nil, nickMask, "JOIN", channel.name, accountName, realName)
} else {
@ -571,41 +573,55 @@ func (channel *Channel) resumeAndAnnounce(newClient, oldClient *Client) {
if 0 < len(oldModes) {
rb.Add(nil, newClient.server.name, "MODE", channel.name, oldModes, nick)
}
rb.Send()
rb.Send(true)
}
func (channel *Channel) replayHistory(newClient *Client, after time.Time, before time.Time) {
chname := channel.Name()
extendedJoin := newClient.capabilities.Has(caps.ExtendedJoin)
func (channel *Channel) replayHistoryForResume(newClient *Client, after time.Time, before time.Time) {
items, complete := channel.history.Between(after, before)
rb := NewResponseBuffer(newClient)
channel.replayHistoryItems(rb, items)
if !complete && !newClient.resumeDetails.HistoryIncomplete {
// warn here if we didn't warn already
rb.Add(nil, "HistServ", "NOTICE", channel.Name(), newClient.t("Some additional message history may have been lost"))
}
rb.Send(true)
}
func (channel *Channel) replayHistoryItems(rb *ResponseBuffer, items []history.Item) {
chname := channel.Name()
client := rb.target
extendedJoin := client.capabilities.Has(caps.ExtendedJoin)
serverTime := client.capabilities.Has(caps.ServerTime)
for _, item := range items {
var tags Tags
if serverTime {
tags = ensureTag(tags, "time", item.Time.Format(IRCv3TimestampFormat))
}
switch item.Type {
case history.Privmsg:
newClient.sendSplitMsgFromClientInternal(true, item.Time, item.Msgid, item.Nick, item.AccountName, nil, "PRIVMSG", chname, item.Message)
rb.AddSplitMessageFromClient(item.Msgid, item.Nick, item.AccountName, tags, "PRIVMSG", chname, item.Message)
case history.Notice:
newClient.sendSplitMsgFromClientInternal(true, item.Time, item.Msgid, item.Nick, item.AccountName, nil, "NOTICE", chname, item.Message)
rb.AddSplitMessageFromClient(item.Msgid, item.Nick, item.AccountName, tags, "NOTICE", chname, item.Message)
case history.Join:
if extendedJoin {
newClient.sendInternal(true, item.Time, nil, item.Nick, "JOIN", chname, item.AccountName, "")
// XXX Msgid is the realname in this case
rb.Add(tags, item.Nick, "JOIN", chname, item.AccountName, item.Msgid)
} else {
newClient.sendInternal(true, item.Time, nil, item.Nick, "JOIN", chname)
rb.Add(tags, item.Nick, "JOIN", chname)
}
case history.Quit:
// XXX: send QUIT as PART to avoid having to correctly deduplicate and synchronize
// QUIT messages across channels
fallthrough
case history.Part:
newClient.sendInternal(true, item.Time, nil, item.Nick, "PART", chname, item.Message.Original)
rb.Add(tags, item.Nick, "PART", chname, item.Message.Original)
case history.Kick:
newClient.sendInternal(true, item.Time, nil, item.Nick, "KICK", chname, item.Msgid, item.Message.Original)
// XXX Msgid is the kick target
rb.Add(tags, item.Nick, "KICK", chname, item.Msgid, item.Message.Original)
}
}
if !complete && !newClient.resumeDetails.HistoryIncomplete {
// warn here if we didn't warn already
newClient.sendInternal(true, time.Time{}, nil, "HistServ", "NOTICE", chname, newClient.t("Some additional message history may have been lost"))
}
}
// SendTopic sends the channel topic to the given client.
@ -707,10 +723,12 @@ func (channel *Channel) sendMessage(msgid, cmd string, requiredCaps []caps.Capab
messageTagsToUse = clientOnlyTags
}
nickMaskString := client.NickMaskString()
accountName := client.AccountName()
if message == nil {
rb.AddFromClient(msgid, client, messageTagsToUse, cmd, channel.name)
rb.AddFromClient(msgid, nickMaskString, accountName, messageTagsToUse, cmd, channel.name)
} else {
rb.AddFromClient(msgid, client, messageTagsToUse, cmd, channel.name, *message)
rb.AddFromClient(msgid, nickMaskString, accountName, messageTagsToUse, cmd, channel.name, *message)
}
}
for _, member := range channel.Members() {
@ -773,10 +791,12 @@ func (channel *Channel) sendSplitMessage(msgid, cmd string, histType history.Ite
if client.capabilities.Has(caps.MessageTags) {
tagsToUse = clientOnlyTags
}
nickMaskString := client.NickMaskString()
accountName := client.AccountName()
if message == nil {
rb.AddFromClient(msgid, client, tagsToUse, cmd, channel.name)
rb.AddFromClient(msgid, nickMaskString, accountName, tagsToUse, cmd, channel.name)
} else {
rb.AddSplitMessageFromClient(msgid, client, tagsToUse, cmd, channel.name, *message)
rb.AddSplitMessageFromClient(msgid, nickMaskString, accountName, tagsToUse, cmd, channel.name, *message)
}
}

20
irc/client.go
View File

@ -446,17 +446,19 @@ func (client *Client) TryResume() {
}
}
}
personalHistory := oldClient.history.All()
privmsgMatcher := func(item history.Item) bool {
return item.Type == history.Privmsg || item.Type == history.Notice
}
privmsgHistory := oldClient.history.Match(privmsgMatcher, 0)
lastDiscarded := oldClient.history.LastDiscarded()
if lastDiscarded.Before(oldestLostMessage) {
oldestLostMessage = lastDiscarded
}
for _, item := range personalHistory {
if item.Type == history.Privmsg || item.Type == history.Notice {
sender := server.clients.Get(item.Nick)
if sender != nil {
friends.Add(sender)
}
for _, item := range privmsgHistory {
// TODO this is the nickmask, fix that
sender := server.clients.Get(item.Nick)
if sender != nil {
friends.Add(sender)
}
}
@ -482,10 +484,10 @@ func (client *Client) TryResume() {
}
if client.resumeDetails.HistoryIncomplete {
client.Send(nil, "RESUME", "WARN", fmt.Sprintf(client.t("Resume may have lost up to %d seconds of history"), gapSeconds))
client.Send(nil, client.server.name, "RESUME", "WARN", fmt.Sprintf(client.t("Resume may have lost up to %d seconds of history"), gapSeconds))
}
client.Send(nil, "RESUME", "SUCCESS", oldNick)
client.Send(nil, client.server.name, "RESUME", "SUCCESS", oldNick)
// after we send the rest of the registration burst, we'll try rejoining channels
}

2
irc/commands.go
View File

@ -47,7 +47,7 @@ func (cmd *Command) Run(server *Server, client *Client, msg ircmsg.IrcMessage) b
rb := NewResponseBuffer(client)
rb.Label = GetLabel(msg)
exiting := cmd.handler(server, client, msg, rb)
rb.Send()
rb.Send(true)
// after each command, see if we can send registration to the client
if !client.registered {

7
irc/config.go
View File

@ -268,9 +268,10 @@ type Config struct {
Fakelag FakelagConfig
History struct {
Enabled bool
ChannelLength int `yaml:"channel-length"`
ClientLength int `yaml:"client-length"`
Enabled bool
ChannelLength int `yaml:"channel-length"`
ClientLength int `yaml:"client-length"`
AutoreplayOnJoin int `yaml:"autoreplay-on-join"`
}
Filename string

8
irc/getters.go
View File

@ -259,13 +259,7 @@ func (channel *Channel) Members() (result []*Client) {
return channel.membersCache
}
func (channel *Channel) UserLimit() uint64 {
channel.stateMutex.RLock()
defer channel.stateMutex.RUnlock()
return channel.userLimit
}
func (channel *Channel) setUserLimit(limit uint64) {
func (channel *Channel) setUserLimit(limit int) {
channel.stateMutex.Lock()
channel.userLimit = limit
channel.stateMutex.Unlock()

20
irc/handlers.go
View File

@ -933,7 +933,7 @@ func sajoinHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Re
server.channels.Join(target, chname, "", true, rb)
}
if client != target {
rb.Send()
rb.Send(false)
}
return false
}
@ -1706,16 +1706,18 @@ func noticeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Re
if !user.HasMode(modes.RegisteredOnly) || client.LoggedIntoAccount() {
user.SendSplitMsgFromClient(msgid, client, clientOnlyTags, "NOTICE", user.nick, splitMsg)
}
nickMaskString := client.NickMaskString()
accountName := client.AccountName()
if client.capabilities.Has(caps.EchoMessage) {
rb.AddSplitMessageFromClient(msgid, client, clientOnlyTags, "NOTICE", user.nick, splitMsg)
rb.AddSplitMessageFromClient(msgid, nickMaskString, accountName, clientOnlyTags, "NOTICE", user.nick, splitMsg)
}
user.history.Add(history.Item{
Type: history.Notice,
Msgid: msgid,
Message: splitMsg,
Nick: client.NickMaskString(),
AccountName: client.AccountName(),
Nick: nickMaskString,
AccountName: accountName,
})
}
}
@ -1916,8 +1918,10 @@ func privmsgHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *R
if !user.HasMode(modes.RegisteredOnly) || client.LoggedIntoAccount() {
user.SendSplitMsgFromClient(msgid, client, clientOnlyTags, "PRIVMSG", user.nick, splitMsg)
}
nickMaskString := client.NickMaskString()
accountName := client.AccountName()
if client.capabilities.Has(caps.EchoMessage) {
rb.AddSplitMessageFromClient(msgid, client, clientOnlyTags, "PRIVMSG", user.nick, splitMsg)
rb.AddSplitMessageFromClient(msgid, nickMaskString, accountName, clientOnlyTags, "PRIVMSG", user.nick, splitMsg)
}
if user.HasMode(modes.Away) {
//TODO(dan): possibly implement cooldown of away notifications to users
@ -1928,8 +1932,8 @@ func privmsgHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *R
Type: history.Privmsg,
Msgid: msgid,
Message: splitMsg,
Nick: client.NickMaskString(),
AccountName: client.AccountName(),
Nick: nickMaskString,
AccountName: accountName,
})
}
}
@ -2150,7 +2154,7 @@ func tagmsgHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Re
}
user.SendFromClient(msgid, client, clientOnlyTags, "TAGMSG", user.nick)
if client.capabilities.Has(caps.EchoMessage) {
rb.AddFromClient(msgid, client, clientOnlyTags, "TAGMSG", user.nick)
rb.AddFromClient(msgid, client.NickMaskString(), client.AccountName(), clientOnlyTags, "TAGMSG", user.nick)
}
if user.HasMode(modes.Away) {
//TODO(dan): possibly implement cooldown of away notifications to users

75
irc/history/history.go
View File

@ -32,9 +32,12 @@ type Item struct {
// this is the uncasefolded account name, if there's no account it should be set to "*"
AccountName string
Message utils.SplitMessage
Msgid string
// for non-privmsg items, we may stuff some other data in here
Msgid string
}
type Predicate func(item Item) (matches bool)
// Buffer is a ring buffer holding message/event history for a channel or user
type Buffer struct {
sync.RWMutex
@ -85,7 +88,7 @@ func (list *Buffer) Add(item Item) {
}
if item.Time.IsZero() {
item.Time = time.Now()
item.Time = time.Now().UTC()
}
list.Lock()
@ -112,6 +115,12 @@ func (list *Buffer) Add(item Item) {
list.buffer[pos] = item
}
func reverse(results []Item) {
for i, j := 0, len(results)-1; i < j; i, j = i+1, j-1 {
results[i], results[j] = results[j], results[i]
}
}
// Between returns all history items with a time `after` <= time <= `before`,
// with an indication of whether the results are complete or are missing items
// because some of that period was discarded. A zero value of `before` is considered
@ -126,51 +135,55 @@ func (list *Buffer) Between(after, before time.Time) (results []Item, complete b
complete = after.Equal(list.lastDiscarded) || after.After(list.lastDiscarded)
satisfies := func(item Item) bool {
return (after.IsZero() || item.Time.After(after)) && (before.IsZero() || item.Time.Before(before))
}
return list.matchInternal(satisfies, 0), complete
}
// Match returns all history items such that `predicate` returns true for them.
// Items are considered in reverse insertion order, up to a total of `limit` matches.
// `predicate` MAY be a closure that maintains its own state across invocations;
// it MUST NOT acquire any locks or otherwise do anything weird.
func (list *Buffer) Match(predicate Predicate, limit int) (results []Item) {
if !list.Enabled() {
return
}
list.RLock()
defer list.RUnlock()
return list.matchInternal(predicate, limit)
}
// you must be holding the read lock to call this
func (list *Buffer) matchInternal(predicate Predicate, limit int) (results []Item) {
if list.start == -1 {
return
}
satisfies := func(itime time.Time) bool {
return (after.IsZero() || itime.After(after)) && (before.IsZero() || itime.Before(before))
}
// TODO: if we can guarantee that the insertion order is also the monotonic clock order,
// then this can do a single allocation and use binary search and 1-2 copy calls
pos := list.prev(list.end)
for {
if satisfies(list.buffer[pos].Time) {
if predicate(list.buffer[pos]) {
results = append(results, list.buffer[pos])
}
if pos == list.start {
if pos == list.start || (limit != 0 && len(results) == limit) {
break
}
pos = list.prev(pos)
}
// reverse the results
for i, j := 0, len(results)-1; i < j; i, j = i+1, j-1 {
results[i], results[j] = results[j], results[i]
}
// TODO sort by time instead?
reverse(results)
return
}
// All returns all available history items as a slice
func (list *Buffer) All() (results []Item) {
list.RLock()
defer list.RUnlock()
if list.start == -1 {
return
}
results = make([]Item, list.length())
if list.start < list.end {
copy(results, list.buffer[list.start:list.end])
} else {
initialSegment := copy(results, list.buffer[list.start:])
copy(results[initialSegment:], list.buffer[:list.end])
}
return
// Latest returns the items most recently added, up to `limit`. If `limit` is 0,
// it returns all items.
func (list *Buffer) Latest(limit int) (results []Item) {
matchAll := func(item Item) bool { return true }
return list.Match(matchAll, limit)
}
// LastDiscarded returns the latest time of any entry that was evicted

3
irc/history/history_test.go
View File

@ -67,7 +67,8 @@ func TestEmptyBuffer(t *testing.T) {
if since[0].Nick != "testnick2" {
t.Error("retrieved junk data")
}
assertEqual(toNicks(buf.All()), []string{"testnick2"}, t)
matchAll := func(item Item) bool { return true }
assertEqual(toNicks(buf.Match(matchAll, 0)), []string{"testnick2"}, t)
}
func toNicks(items []Item) (result []string) {

2
irc/modes.go
View File

@ -189,7 +189,7 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
case modes.UserLimit:
switch change.Op {
case modes.Add:
val, err := strconv.ParseUint(change.Arg, 10, 64)
val, err := strconv.Atoi(change.Arg)
if err == nil {
channel.setUserLimit(val)
applied = append(applied, change)

2
irc/nickname.go
View File

@ -83,7 +83,7 @@ func (server *Server) RandomlyRename(client *Client) {
nick := fmt.Sprintf("%s%s", prefix, hex.EncodeToString(buf))
rb := NewResponseBuffer(client)
performNickChange(server, client, client, nick, rb)
rb.Send()
rb.Send(false)
// technically performNickChange can fail to change the nick,
// but if they're still delinquent, the timer will get them later
}

136
irc/responsebuffer.go
View File

@ -4,6 +4,7 @@
package irc
import (
"runtime/debug"
"time"
"github.com/goshuirc/irc-go/ircmsg"
@ -11,16 +12,22 @@ import (
"github.com/oragono/oragono/irc/utils"
)
const (
// https://ircv3.net/specs/extensions/labeled-response.html
batchType = "draft/labeled-response"
)
// ResponseBuffer - put simply - buffers messages and then outputs them to a given client.
//
// Using a ResponseBuffer lets you really easily implement labeled-response, since the
// buffer will silently create a batch if required and label the outgoing messages as
// necessary (or leave it off and simply tag the outgoing message).
type ResponseBuffer struct {
Label string
target *Client
messages []ircmsg.IrcMessage
blocking bool
Label string
batchID string
target *Client
messages []ircmsg.IrcMessage
finalized bool
}
// GetLabel returns the label from the given message.
@ -35,96 +42,125 @@ func NewResponseBuffer(target *Client) *ResponseBuffer {
}
}
func (rb *ResponseBuffer) SetBlocking(blocking bool) {
rb.blocking = blocking
}
// Add adds a standard new message to our queue.
func (rb *ResponseBuffer) Add(tags *map[string]ircmsg.TagValue, prefix string, command string, params ...string) {
message := ircmsg.MakeMessage(tags, prefix, command, params...)
if rb.finalized {
rb.target.server.logger.Error("message added to finalized ResponseBuffer, undefined behavior")
debug.PrintStack()
return
}
message := ircmsg.MakeMessage(tags, prefix, command, params...)
rb.messages = append(rb.messages, message)
}
// AddFromClient adds a new message from a specific client to our queue.
func (rb *ResponseBuffer) AddFromClient(msgid string, from *Client, tags *map[string]ircmsg.TagValue, command string, params ...string) {
func (rb *ResponseBuffer) AddFromClient(msgid string, fromNickMask string, fromAccount string, tags *map[string]ircmsg.TagValue, command string, params ...string) {
// attach account-tag
if rb.target.capabilities.Has(caps.AccountTag) && from.LoggedIntoAccount() {
if tags == nil {
tags = ircmsg.MakeTags("account", from.AccountName())
} else {
(*tags)["account"] = ircmsg.MakeTagValue(from.AccountName())
if rb.target.capabilities.Has(caps.AccountTag) {
if fromAccount != "*" {
tags = ensureTag(tags, "account", fromAccount)
}
}
// attach message-id
if len(msgid) > 0 && rb.target.capabilities.Has(caps.MessageTags) {
if tags == nil {
tags = ircmsg.MakeTags("draft/msgid", msgid)
} else {
(*tags)["draft/msgid"] = ircmsg.MakeTagValue(msgid)
}
tags = ensureTag(tags, "draft/msgid", msgid)
}
rb.Add(tags, from.nickMaskString, command, params...)
rb.Add(tags, fromNickMask, command, params...)
}
// AddSplitMessageFromClient adds a new split message from a specific client to our queue.
func (rb *ResponseBuffer) AddSplitMessageFromClient(msgid string, from *Client, tags *map[string]ircmsg.TagValue, command string, target string, message utils.SplitMessage) {
func (rb *ResponseBuffer) AddSplitMessageFromClient(msgid string, fromNickMask string, fromAccount string, tags *map[string]ircmsg.TagValue, command string, target string, message utils.SplitMessage) {
if rb.target.capabilities.Has(caps.MaxLine) || message.Wrapped == nil {
rb.AddFromClient(msgid, from, tags, command, target, message.Original)
rb.AddFromClient(msgid, fromNickMask, fromAccount, tags, command, target, message.Original)
} else {
for _, str := range message.Wrapped {
rb.AddFromClient(msgid, from, tags, command, target, str)
rb.AddFromClient(msgid, fromNickMask, fromAccount, tags, command, target, str)
}
}
}
// Send sends the message to our target client.
func (rb *ResponseBuffer) Send() error {
// fall out if no messages to send
if len(rb.messages) == 0 {
return nil
func (rb *ResponseBuffer) sendBatchStart(blocking bool) {
if rb.batchID != "" {
// batch already initialized
return
}
// make batch and all if required
var batch *Batch
useLabel := rb.target.capabilities.Has(caps.LabeledResponse) && rb.Label != ""
if useLabel && 1 < len(rb.messages) && rb.target.capabilities.Has(caps.Batch) {
batch = rb.target.server.batches.New("draft/labeled-response")
// formerly this combined time.Now.UnixNano() in base 36 with an incrementing counter,
// also in base 36. but let's just use a uuidv4-alike (26 base32 characters):
rb.batchID = utils.GenerateSecretToken()
message := ircmsg.MakeMessage(nil, rb.target.server.name, "BATCH", "+"+rb.batchID, batchType)
message.Tags[caps.LabelTagName] = ircmsg.MakeTagValue(rb.Label)
rb.target.SendRawMessage(message, blocking)
}
func (rb *ResponseBuffer) sendBatchEnd(blocking bool) {
if rb.batchID == "" {
// we are not sending a batch, skip this
return
}
message := ircmsg.MakeMessage(nil, rb.target.server.name, "BATCH", "-"+rb.batchID)
rb.target.SendRawMessage(message, blocking)
}
// Send sends all messages in the buffer to the client.
// Afterwards, the buffer is in an undefined state and MUST NOT be used further.
// If `blocking` is true you MUST be sending to the client from its own goroutine.
func (rb *ResponseBuffer) Send(blocking bool) error {
return rb.flushInternal(true, blocking)
}
// Flush sends all messages in the buffer to the client.
// Afterwards, the buffer can still be used. Client code MUST subsequently call Send()
// to ensure that the final `BATCH -` message is sent.
// If `blocking` is true you MUST be sending to the client from its own goroutine.
func (rb *ResponseBuffer) Flush(blocking bool) error {
return rb.flushInternal(false, blocking)
}
// flushInternal sends the contents of the buffer, either blocking or nonblocking
// It sends the `BATCH +` message if the client supports it and it hasn't been sent already.
// If `final` is true, it also sends `BATCH -` (if necessary).
func (rb *ResponseBuffer) flushInternal(final bool, blocking bool) error {
useLabel := rb.target.capabilities.Has(caps.LabeledResponse) && rb.Label != ""
// use a batch if we have a label, and we either currently have multiple messages,
// or we are doing a Flush() and we have to assume that there will be more messages
// in the future.
useBatch := useLabel && (len(rb.messages) > 1 || !final)
// if label but no batch, add label to first message
if useLabel && batch == nil {
message := rb.messages[0]
message.Tags[caps.LabelTagName] = ircmsg.MakeTagValue(rb.Label)
rb.messages[0] = message
}
// start batch if required
if batch != nil {
batch.Start(rb.target, ircmsg.MakeTags(caps.LabelTagName, rb.Label))
if useLabel && !useBatch && len(rb.messages) == 1 {
rb.messages[0].Tags[caps.LabelTagName] = ircmsg.MakeTagValue(rb.Label)
} else if useBatch {
rb.sendBatchStart(blocking)
}
// send each message out
for _, message := range rb.messages {
// attach server-time if needed
if rb.target.capabilities.Has(caps.ServerTime) {
t := time.Now().UTC().Format(IRCv3TimestampFormat)
message.Tags["time"] = ircmsg.MakeTagValue(t)
if !message.Tags["time"].HasValue {
t := time.Now().UTC().Format(IRCv3TimestampFormat)
message.Tags["time"] = ircmsg.MakeTagValue(t)
}
}
// attach batch ID
if batch != nil {
message.Tags["batch"] = ircmsg.MakeTagValue(batch.ID)
if rb.batchID != "" {
message.Tags["batch"] = ircmsg.MakeTagValue(rb.batchID)
}
// send message out
rb.target.SendRawMessage(message, rb.blocking)
rb.target.SendRawMessage(message, blocking)
}
// end batch if required
if batch != nil {
batch.End(rb.target)
if final {
rb.sendBatchEnd(blocking)
rb.finalized = true
}
// clear out any existing messages

6
irc/server.go
View File

@ -67,7 +67,6 @@ type ListenerWrapper struct {
// Server is the main Oragono server.
type Server struct {
accounts *AccountManager
batches *BatchManager
channels *ChannelManager
channelRegistry *ChannelRegistry
clients *ClientManager
@ -116,7 +115,6 @@ type clientConn struct {
func NewServer(config *Config, logger *logger.Manager) (*Server, error) {
// initialize data structures
server := &Server{
batches: NewBatchManager(),
channels: NewChannelManager(),
clients: NewClientManager(),
connectionLimiter: connection_limits.NewLimiter(),
@ -406,7 +404,7 @@ func (server *Server) tryRegister(c *Client) {
rb := NewResponseBuffer(c)
nickAssigned := performNickChange(server, c, c, preregNick, rb)
rb.Send()
rb.Send(true)
if !nickAssigned {
c.SetPreregNick("")
return
@ -446,7 +444,7 @@ func (server *Server) tryRegister(c *Client) {
rb = NewResponseBuffer(c)
c.RplISupport(rb)
server.MOTD(c, rb)
rb.Send()
rb.Send(true)
modestring := c.ModeString()
if modestring != "+" {

11
irc/utils/crypto.go
View File

@ -6,7 +6,12 @@ package utils
import (
"crypto/rand"
"crypto/subtle"
"encoding/hex"
"encoding/base32"
)
var (
// standard b32 alphabet, but in lowercase for silly aesthetic reasons
b32encoder = base32.NewEncoding("abcdefghijklmnopqrstuvwxyz234567").WithPadding(base32.NoPadding)
)
// generate a secret token that cannot be brute-forced via online attacks
@ -14,8 +19,8 @@ func GenerateSecretToken() string {
// 128 bits of entropy are enough to resist any online attack:
var buf [16]byte
rand.Read(buf[:])
// 32 ASCII characters, should be fine for most purposes
return hex.EncodeToString(buf[:])
// 26 ASCII characters, should be fine for most purposes
return b32encoder.EncodeToString(buf[:])
}
// securely check if a supplied token matches a stored token

8
irc/utils/crypto_test.go
View File

@ -16,7 +16,7 @@ const (
func TestGenerateSecretToken(t *testing.T) {
token := GenerateSecretToken()
if len(token) != 32 {
if len(token) < 22 {
t.Errorf("bad token: %v", token)
}
}
@ -46,3 +46,9 @@ func TestTokenCompare(t *testing.T) {
t.Error("the empty token should not match anything")
}
}
func BenchmarkGenerateSecretToken(b *testing.B) {
for i := 0; i < b.N; i++ {
GenerateSecretToken()
}
}

28
oragono.go
View File

@ -51,17 +51,7 @@ Options:
arguments, _ := docopt.ParseArgs(usage, nil, version)
configfile := arguments["--conf"].(string)
config, err := irc.LoadConfig(configfile)
if err != nil {
log.Fatal("Config file did not load successfully: ", err.Error())
}
logman, err := logger.NewManager(config.Logging)
if err != nil {
log.Fatal("Logger did not load successfully:", err.Error())
}
// don't require a config file for genpasswd
if arguments["genpasswd"].(bool) {
fmt.Print("Enter Password: ")
password := getPassword()
@ -77,7 +67,21 @@ Options:
log.Fatal("encoding error:", err.Error())
}
fmt.Println(string(hash))
} else if arguments["initdb"].(bool) {
return
}
configfile := arguments["--conf"].(string)
config, err := irc.LoadConfig(configfile)
if err != nil {
log.Fatal("Config file did not load successfully: ", err.Error())
}
logman, err := logger.NewManager(config.Logging)
if err != nil {
log.Fatal("Logger did not load successfully:", err.Error())
}
if arguments["initdb"].(bool) {
irc.InitDB(config.Datastore.Path)
if !arguments["--quiet"].(bool) {
log.Println("database initialized: ", config.Datastore.Path)

3
oragono.yaml
View File

@ -454,3 +454,6 @@ history:
# how many direct messages and notices should be tracked per user?
client-length: 64
# number of messages to automatically play back on channel join (0 to disable):
autoreplay-on-join: 0