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fix #649

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This commit is contained in:
Shivaram Lingamneni 2019-10-13 06:07:30 -04:00
parent 332f0d8d91
commit 82c5041225
5 changed files with 73 additions and 41 deletions
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19
irc/client_lookup_set.go
View File

@ -268,10 +268,10 @@ func NewUserMaskSet() *UserMaskSet {
}
// Add adds the given mask to this set.
func (set *UserMaskSet) Add(mask, creatorNickmask, creatorAccount string) (added bool) {
func (set *UserMaskSet) Add(mask, creatorNickmask, creatorAccount string) (maskAdded string, err error) {
casefoldedMask, err := CanonicalizeMaskWildcard(mask)
if err != nil {
return false
return
}
set.Lock()
@ -279,8 +279,8 @@ func (set *UserMaskSet) Add(mask, creatorNickmask, creatorAccount string) (added
set.masks = make(map[string]MaskInfo)
}
_, present := set.masks[casefoldedMask]
added = !present
if added {
if !present {
maskAdded = casefoldedMask
set.masks[casefoldedMask] = MaskInfo{
TimeCreated: time.Now().UTC(),
CreatorNickmask: creatorNickmask,
@ -289,22 +289,23 @@ func (set *UserMaskSet) Add(mask, creatorNickmask, creatorAccount string) (added
}
set.Unlock()
if added {
if !present {
set.setRegexp()
}
return
}
// Remove removes the given mask from this set.
func (set *UserMaskSet) Remove(mask string) (removed bool) {
mask, err := CanonicalizeMaskWildcard(mask)
func (set *UserMaskSet) Remove(mask string) (maskRemoved string, err error) {
mask, err = CanonicalizeMaskWildcard(mask)
if err != nil {
return false
return
}
set.Lock()
_, removed = set.masks[mask]
_, removed := set.masks[mask]
if removed {
maskRemoved = mask
delete(set.masks, mask)
}
set.Unlock()

18
irc/handlers.go
View File

@ -1685,13 +1685,12 @@ func cmodeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
return false
}
// applied mode changes
applied := make(modes.ModeChanges, 0)
var changes modes.ModeChanges
if 1 < len(msg.Params) {
// parse out real mode changes
params := msg.Params[1:]
changes, unknown := modes.ParseChannelModeChanges(params...)
var unknown map[rune]bool
changes, unknown = modes.ParseChannelModeChanges(params...)
// alert for unknown mode changes
for char := range unknown {
@ -1700,10 +1699,9 @@ func cmodeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
if len(unknown) == 1 && len(changes) == 0 {
return false
}
// apply mode changes
applied = channel.ApplyChannelModeChanges(client, msg.Command == "SAMODE", changes, rb)
}
// process mode changes, include list operations (an empty set of changes does a list)
applied := channel.ApplyChannelModeChanges(client, msg.Command == "SAMODE", changes, rb)
// save changes
var includeFlags uint
@ -1719,8 +1717,8 @@ func cmodeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
}
// send out changes
prefix := client.NickMaskString()
if len(applied) > 0 {
prefix := client.NickMaskString()
//TODO(dan): we should change the name of String and make it return a slice here
args := append([]string{channel.name}, strings.Split(applied.String(), " ")...)
for _, member := range channel.Members() {
@ -1735,10 +1733,6 @@ func cmodeHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *Res
member.Send(nil, prefix, "MODE", args...)
}
}
} else {
args := append([]string{client.nick, channel.name}, channel.modeStrings(client)...)
rb.Add(nil, prefix, RPL_CHANNELMODEIS, args...)
rb.Add(nil, client.nickMaskString, RPL_CREATIONTIME, client.nick, channel.name, strconv.FormatInt(channel.createdTime.Unix(), 10))
}
return false
}

61
irc/modes.go
View File

@ -6,6 +6,7 @@
package irc
import (
"fmt"
"strconv"
"strings"
@ -104,17 +105,15 @@ func ParseDefaultChannelModes(rawModes *string) modes.Modes {
}
// ApplyChannelModeChanges applies a given set of mode changes.
func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, changes modes.ModeChanges, rb *ResponseBuffer) modes.ModeChanges {
func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, changes modes.ModeChanges, rb *ResponseBuffer) (applied modes.ModeChanges) {
// so we only output one warning for each list type when full
listFullWarned := make(map[modes.Mode]bool)
var alreadySentPrivError bool
applied := make(modes.ModeChanges, 0)
isListOp := func(change modes.ModeChange) bool {
return (change.Op == modes.List) || (change.Arg == "")
}
maskOpCount := 0
chname := channel.Name()
details := client.Details()
hasPrivs := func(change modes.ModeChange) bool {
if isSamode {
@ -127,18 +126,19 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
return true
}
cfarg, _ := CasefoldName(change.Arg)
isSelfChange := cfarg == client.NickCasefolded()
isSelfChange := cfarg == details.nickCasefolded
if change.Op == modes.Remove && isSelfChange {
// "There is no restriction, however, on anyone `deopping' themselves"
// <https://tools.ietf.org/html/rfc2812#section-3.1.5>
return true
}
return channelUserModeHasPrivsOver(channel.HighestUserMode(client), change.Mode)
case modes.BanMask:
// #163: allow unprivileged users to list ban masks
return isListOp(change) || channel.ClientIsAtLeast(client, modes.ChannelOperator)
default:
case modes.InviteMask, modes.ExceptMask:
// listing these requires privileges
return channel.ClientIsAtLeast(client, modes.ChannelOperator)
default:
// #163: allow unprivileged users to list ban masks, and any other modes
return change.Op == modes.List || channel.ClientIsAtLeast(client, modes.ChannelOperator)
}
}
@ -146,14 +146,15 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
if !hasPrivs(change) {
if !alreadySentPrivError {
alreadySentPrivError = true
rb.Add(nil, client.server.name, ERR_CHANOPRIVSNEEDED, client.Nick(), channel.name, client.t("You're not a channel operator"))
rb.Add(nil, client.server.name, ERR_CHANOPRIVSNEEDED, details.nick, channel.name, client.t("You're not a channel operator"))
}
continue
}
switch change.Mode {
case modes.BanMask, modes.ExceptMask, modes.InviteMask:
if isListOp(change) {
maskOpCount += 1
if change.Op == modes.List {
channel.ShowMaskList(client, change.Mode, rb)
continue
}
@ -163,20 +164,33 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
case modes.Add:
if channel.lists[change.Mode].Length() >= client.server.Config().Limits.ChanListModes {
if !listFullWarned[change.Mode] {
rb.Add(nil, client.server.name, ERR_BANLISTFULL, client.Nick(), channel.Name(), change.Mode.String(), client.t("Channel list is full"))
rb.Add(nil, client.server.name, ERR_BANLISTFULL, details.nick, chname, change.Mode.String(), client.t("Channel list is full"))
listFullWarned[change.Mode] = true
}
continue
}
details := client.Details()
if success := channel.lists[change.Mode].Add(mask, details.nickMask, details.accountName); success {
applied = append(applied, change)
maskAdded, err := channel.lists[change.Mode].Add(mask, details.nickMask, details.accountName)
if maskAdded != "" {
appliedChange := change
appliedChange.Arg = maskAdded
applied = append(applied, appliedChange)
} else if err != nil {
rb.Add(nil, client.server.name, ERR_INVALIDMODEPARAM, details.nick, mask, fmt.Sprintf(client.t("Invalid mode %s parameter: %s"), string(change.Mode), mask))
} else {
rb.Add(nil, client.server.name, ERR_LISTMODEALREADYSET, chname, mask, string(change.Mode), fmt.Sprintf(client.t("Channel %s list already contains %s"), chname, mask))
}
case modes.Remove:
if success := channel.lists[change.Mode].Remove(mask); success {
applied = append(applied, change)
maskRemoved, err := channel.lists[change.Mode].Remove(mask)
if maskRemoved != "" {
appliedChange := change
appliedChange.Arg = maskRemoved
applied = append(applied, appliedChange)
} else if err != nil {
rb.Add(nil, client.server.name, ERR_INVALIDMODEPARAM, details.nick, mask, fmt.Sprintf(client.t("Invalid mode %s parameter: %s"), string(change.Mode), mask))
} else {
rb.Add(nil, client.server.name, ERR_LISTMODENOTSET, chname, mask, string(change.Mode), fmt.Sprintf(client.t("Channel %s list does not contain %s"), chname, mask))
}
}
@ -221,7 +235,7 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
nick := change.Arg
if nick == "" {
rb.Add(nil, client.server.name, ERR_NEEDMOREPARAMS, client.Nick(), "MODE", client.t("Not enough parameters"))
return nil
continue
}
change := channel.applyModeToMember(client, change.Mode, change.Op, nick, rb)
@ -231,6 +245,13 @@ func (channel *Channel) ApplyChannelModeChanges(client *Client, isSamode bool, c
}
}
// #649: don't send 324 RPL_CHANNELMODEIS if we were only working with mask lists
if len(applied) == 0 && !alreadySentPrivError && (maskOpCount == 0 || maskOpCount < len(changes)) {
args := append([]string{details.nick, chname}, channel.modeStrings(client)...)
rb.Add(nil, client.server.name, RPL_CHANNELMODEIS, args...)
rb.Add(nil, client.server.name, RPL_CREATIONTIME, details.nick, chname, strconv.FormatInt(channel.createdTime.Unix(), 10))
}
return applied
}

13
irc/modes/modes_test.go
View File

@ -47,6 +47,19 @@ func TestParseChannelModeChanges(t *testing.T) {
if len(modes) != 1 || modes[0] != expected {
t.Errorf("unexpected mode change: %v", modes)
}
modes, unknown = ParseChannelModeChanges("+b")
if len(unknown) > 0 {
t.Errorf("unexpected unknown mode change: %v", unknown)
}
// +b with no argument becomes a list operation
expectedChanges := ModeChanges{{
Op: List,
Mode: BanMask,
}}
if !reflect.DeepEqual(modes, expectedChanges) {
t.Errorf("unexpected mode change: %v instead of %v", modes, expectedChanges)
}
}
func TestSetMode(t *testing.T) {

3
irc/numerics.go
View File

@ -169,6 +169,9 @@ const (
RPL_YOURLANGUAGESARE = "687"
ERR_CHANNAMEINUSE = "692"
ERR_CANNOTRENAME = "693"
ERR_INVALIDMODEPARAM = "696"
ERR_LISTMODEALREADYSET = "697"
ERR_LISTMODENOTSET = "698"
RPL_HELPSTART = "704"
RPL_HELPTXT = "705"
RPL_ENDOFHELP = "706"