hid: port MODE, STATS, LINKS, KILL
Now all the commands have been ported but we desperately need to parse a configuration file for additional settings yet.
This commit is contained in:
parent
5429c0b09d
commit
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GPG Key ID:
A0420B94F92B9493
584
hid/main.go
584
hid/main.go
@ -18,6 +18,7 @@ package main
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import (
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"bufio"
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"bytes"
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"crypto/sha256"
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"crypto/tls"
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"encoding/hex"
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@ -45,6 +46,11 @@ const (
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projectVersion = "0"
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)
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// TODO: Consider using time.Time directly instead of storing Unix epoch
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// timestamps with nanosecond precision. Despite carrying unnecessary timezone
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// information, it also carries a monotonic reading of the time, which allows
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// for more precise measurement of time differences.
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// --- Utilities ---------------------------------------------------------------
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// Split a string by a set of UTF-8 delimiters, optionally ignoring empty items.
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@ -316,8 +322,6 @@ const (
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ircMaxMessageLength = 510
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)
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// TODO: Port the IRC token validation part as needed.
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const reClassSpecial = "\\[\\]\\\\`_^{|}"
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var (
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@ -330,6 +334,9 @@ var (
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reUsername = regexp.MustCompile(`^[^\0\r\n @]+$`)
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reChannelName = regexp.MustCompile(`^[^\0\7\r\n ,:]+$`)
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reKey = regexp.MustCompile(`^[^\r\n\f\t\v ]{1,23}$`)
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reUserMask = regexp.MustCompile(`^[^!@]+![^!@]+@[^@!]+$`)
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reFingerprint = regexp.MustCompile(`^[a-fA-F0-9]{64}$`)
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)
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func ircIsValidNickname(nickname string) bool {
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@ -346,6 +353,19 @@ func ircIsValidChannelName(name string) bool {
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return len(name) <= ircMaxChannelName && reChannelName.MatchString(name)
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}
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func ircIsValidKey(key string) bool {
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// XXX: Should be 7-bit as well but whatever.
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return reKey.MatchString(key)
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}
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func ircIsValidUserMask(mask string) bool {
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return reUserMask.MatchString(mask)
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}
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func ircIsValidFingerprint(fp string) bool {
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return reFingerprint.MatchString(fp)
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}
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// --- Clients (equals users) --------------------------------------------------
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type connCloseWrite interface {
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@ -356,7 +376,7 @@ type connCloseWrite interface {
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const ircSupportedUserModes = "aiwros"
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const (
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ircUserModeInvisible = 1 << iota
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ircUserModeInvisible uint = 1 << iota
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ircUserModeRxWallops
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ircUserModeRestricted
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ircUserModeOperator
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@ -364,7 +384,7 @@ const (
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)
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const (
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ircCapMultiPrefix = 1 << iota
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ircCapMultiPrefix uint = 1 << iota
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ircCapInviteNotify
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ircCapEchoMessage
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ircCapUserhostInNames
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@ -417,7 +437,7 @@ type client struct {
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const ircSupportedChanModes = "ov" + "beI" + "imnqpst" + "kl"
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const (
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ircChanModeInviteOnly = 1 << iota
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ircChanModeInviteOnly uint = 1 << iota
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ircChanModeModerated
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ircChanModeNoOutsideMsgs
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ircChanModeQuiet
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@ -447,11 +467,48 @@ type channel struct {
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inviteList []string // exceptions from +I
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}
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func newChannel() *channel {
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return &channel{userLimit: -1}
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}
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func (ch *channel) getMode(discloseSecrets bool) string {
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var buf []byte
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if 0 != ch.modes&ircChanModeInviteOnly {
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buf = append(buf, 'i')
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}
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if 0 != ch.modes&ircChanModeModerated {
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buf = append(buf, 'm')
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}
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if 0 != ch.modes&ircChanModeNoOutsideMsgs {
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buf = append(buf, 'n')
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}
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if 0 != ch.modes&ircChanModeQuiet {
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buf = append(buf, 'q')
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}
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if 0 != ch.modes&ircChanModePrivate {
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buf = append(buf, 'p')
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}
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if 0 != ch.modes&ircChanModeSecret {
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buf = append(buf, 's')
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}
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if 0 != ch.modes&ircChanModeProtectedTopic {
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buf = append(buf, 'r')
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}
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// TODO: Port struct channel methods.
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if ch.userLimit != -1 {
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buf = append(buf, 'l')
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}
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if ch.key != "" {
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buf = append(buf, 'k')
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}
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// XXX: Is it correct to split it? Try it on an existing implementation.
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if discloseSecrets {
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if ch.userLimit != -1 {
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buf = append(buf, fmt.Sprintf(" %d", ch.userLimit)...)
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}
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if ch.key != "" {
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buf = append(buf, fmt.Sprintf(" %s", ch.key)...)
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}
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}
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return string(buf)
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}
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// --- IRC server context ------------------------------------------------------
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@ -854,6 +911,7 @@ func (c *client) sendLUSERS() {
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c.sendReply(RPL_LUSERME, nUsers+nServices+nUnknown, 0 /* peer servers */)
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}
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// TODO: Rename back to ircIsThisMe for consistency with kike.
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func isThisMe(target string) bool {
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// Target servers can also be matched by their users
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if ircFnmatch(target, serverName) {
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@ -1237,7 +1295,6 @@ func ircChannelMulticast(ch *channel, msg string, except *client) {
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}
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}
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/*
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func ircModifyMode(mask *uint, mode uint, add bool) bool {
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orig := *mask
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if add {
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@ -1249,9 +1306,365 @@ func ircModifyMode(mask *uint, mode uint, add bool) bool {
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}
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func ircUpdateUserMode(c *client, newMode uint) {
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// TODO: Port, as well as all the other kike functions.
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oldMode := c.mode
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c.mode = newMode
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added, removed := newMode & ^oldMode, oldMode & ^newMode
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var diff []byte
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if added != 0 {
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diff = append(diff, '+')
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diff = ircAppendClientModes(added, diff)
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}
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if removed != 0 {
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diff = append(diff, '-')
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diff = ircAppendClientModes(removed, diff)
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}
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if len(diff) > 0 {
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c.sendf(":%s MODE %s :%s", c.nickname, c.nickname, string(diff))
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}
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}
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*/
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func ircHandleUserModeChange(c *client, modeString string) {
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newMode := c.mode
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adding := true
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for _, flag := range modeString {
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switch flag {
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case '+':
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adding = true
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case '-':
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adding = false
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case 'a':
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// Ignore, the client should use AWAY.
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case 'i':
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ircModifyMode(&newMode, ircUserModeInvisible, adding)
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case 'w':
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ircModifyMode(&newMode, ircUserModeRxWallops, adding)
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case 'r':
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// It's not possible ot un-restrict yourself.
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if adding {
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newMode |= ircUserModeRestricted
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}
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case 'o':
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if !adding {
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newMode &= ^ircUserModeOperator
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} else if operators[c.tlsCertFingerprint] {
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newMode |= ircUserModeOperator
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} else {
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c.sendf(":%s NOTICE %s :Either you're not using an TLS"+
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" client certificate, or the fingerprint doesn't match",
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serverName, c.nickname)
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}
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case 's':
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ircModifyMode(&newMode, ircUserModeRxServerNotices, adding)
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default:
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c.sendReply(ERR_UMODEUNKNOWNFLAG)
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return
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}
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}
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ircUpdateUserMode(c, newMode)
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}
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func ircSendChannelList(c *client, channelName string, list []string,
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reply, endReply int) {
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for _, line := range list {
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c.sendReply(reply, channelName, line)
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}
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c.sendReply(endReply, channelName)
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}
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func ircCheckExpandUserMask(mask string) string {
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var result []byte
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result = append(result, mask...)
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// Make sure it is a complete mask.
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if bytes.IndexByte(result, '!') < 0 {
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result = append(result, "!*"...)
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}
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if bytes.IndexByte(result, '@') < 0 {
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result = append(result, "@*"...)
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}
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// And validate whatever the result is.
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s := string(result)
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if !ircIsValidUserMask(s) {
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return ""
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}
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return s
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// Channel MODE command handling. This is by far the worst command to implement
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// from the whole RFC; don't blame me if it doesn't work exactly as expected.
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type modeProcessor struct {
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params []string // mode string parameters
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c *client // who does the changes
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ch *channel // the channel we're modifying
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present bool // c present on ch
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modes uint // channel user modes
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adding bool // currently adding modes
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modeChar byte // currently processed mode char
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added []byte // added modes
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removed []byte // removed modes
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output *[]byte // "added" or "removed"
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addedParams []string // params for added modes
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removedParams []string // params for removed modes
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outputParams *[]string // "addedParams" or "removedParams"
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}
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func (mp *modeProcessor) nextParam() string {
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if len(mp.params) == 0 {
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return ""
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}
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param := mp.params[0]
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mp.params = mp.params[1:]
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return param
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}
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func (mp *modeProcessor) checkOperator() bool {
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if (mp.present && 0 != mp.modes&ircChanModeOperator) ||
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0 != mp.c.mode&ircUserModeOperator {
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return true
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}
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mp.c.sendReply(ERR_CHANOPRIVSNEEDED, mp.ch.name)
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return false
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}
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func (mp *modeProcessor) doUser(mode uint) {
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target := mp.nextParam()
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if !mp.checkOperator() || target == "" {
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return
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}
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if client := users[ircToCanon(target)]; client == nil {
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mp.c.sendReply(ERR_NOSUCHNICK, target)
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} else if modes, present := mp.ch.userModes[client]; !present {
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mp.c.sendReply(ERR_USERNOTINCHANNEL, target, mp.ch.name)
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} else if ircModifyMode(&modes, mode, mp.adding) {
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mp.ch.userModes[client] = modes
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*mp.output = append(*mp.output, mp.modeChar)
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*mp.outputParams = append(*mp.outputParams, client.nickname)
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}
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}
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func (mp *modeProcessor) doChan(mode uint) bool {
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if !mp.checkOperator() || !ircModifyMode(&mp.ch.modes, mode, mp.adding) {
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return false
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}
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*mp.output = append(*mp.output, mp.modeChar)
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return true
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}
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func (mp *modeProcessor) doChanRemove(modeChar byte, mode uint) {
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if mp.adding && ircModifyMode(&mp.ch.modes, mode, false) {
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mp.removed = append(mp.removed, modeChar)
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}
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}
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func (mp *modeProcessor) doList(list *[]string, listMsg, endMsg int) {
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target := mp.nextParam()
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if target == "" {
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if mp.adding {
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ircSendChannelList(mp.c, mp.ch.name, *list, listMsg, endMsg)
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}
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return
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}
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if !mp.checkOperator() {
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return
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}
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mask := ircCheckExpandUserMask(target)
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if mask == "" {
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return
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}
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var i int
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for i = 0; i < len(*list); i++ {
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if ircEqual((*list)[i], mask) {
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break
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}
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}
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found := i < len(*list)
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if found != mp.adding {
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if mp.adding {
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*list = append(*list, mask)
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} else {
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*list = append((*list)[:i], (*list)[i+1:]...)
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}
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*mp.output = append(*mp.output, mp.modeChar)
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*mp.outputParams = append(*mp.outputParams, mask)
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}
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}
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func (mp *modeProcessor) doKey() {
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target := mp.nextParam()
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if !mp.checkOperator() || target == "" {
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return
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}
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if !mp.adding {
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if mp.ch.key == "" || !ircEqual(target, mp.ch.key) {
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return
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}
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mp.removed = append(mp.removed, mp.modeChar)
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mp.removedParams = append(mp.removedParams, mp.ch.key)
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mp.ch.key = ""
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} else if !ircIsValidKey(target) {
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// TODO: We should notify the user somehow.
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return
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} else if mp.ch.key != "" {
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mp.c.sendReply(ERR_KEYSET, mp.ch.name)
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} else {
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mp.ch.key = target
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mp.added = append(mp.added, mp.modeChar)
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mp.addedParams = append(mp.addedParams, mp.ch.key)
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}
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}
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func (mp *modeProcessor) doLimit() {
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if !mp.checkOperator() {
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return
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}
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if !mp.adding {
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if mp.ch.userLimit == -1 {
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return
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}
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mp.ch.userLimit = -1
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mp.removed = append(mp.removed, mp.modeChar)
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} else if target := mp.nextParam(); target != "" {
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if x, err := strconv.ParseInt(target, 10, 32); err == nil && x > 0 {
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mp.ch.userLimit = int(x)
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mp.added = append(mp.added, mp.modeChar)
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mp.addedParams = append(mp.addedParams, target)
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}
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}
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}
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func (mp *modeProcessor) step(modeChar byte) bool {
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mp.modeChar = modeChar
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switch mp.modeChar {
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case '+':
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mp.adding = true
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mp.output = &mp.added
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mp.outputParams = &mp.addedParams
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case '-':
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mp.adding = false
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mp.output = &mp.removed
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mp.outputParams = &mp.removedParams
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case 'o':
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mp.doUser(ircChanModeOperator)
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case 'v':
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mp.doUser(ircChanModeVoice)
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case 'i':
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mp.doChan(ircChanModeInviteOnly)
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case 'm':
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mp.doChan(ircChanModeModerated)
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case 'n':
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mp.doChan(ircChanModeNoOutsideMsgs)
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case 'q':
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mp.doChan(ircChanModeQuiet)
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case 't':
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mp.doChan(ircChanModeProtectedTopic)
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case 'p':
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if mp.doChan(ircChanModePrivate) {
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mp.doChanRemove('s', ircChanModeSecret)
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}
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case 's':
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if mp.doChan(ircChanModeSecret) {
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mp.doChanRemove('p', ircChanModePrivate)
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}
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case 'b':
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mp.doList(&mp.ch.banList, RPL_BANLIST, RPL_ENDOFBANLIST)
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case 'e':
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mp.doList(&mp.ch.banList, RPL_EXCEPTLIST, RPL_ENDOFEXCEPTLIST)
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case 'I':
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mp.doList(&mp.ch.banList, RPL_INVITELIST, RPL_ENDOFINVITELIST)
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case 'k':
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mp.doKey()
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case 'l':
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mp.doLimit()
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default:
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// It's not safe to continue, results could be undesired.
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mp.c.sendReply(ERR_UNKNOWNMODE, modeChar, mp.ch.name)
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return false
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}
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return true
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}
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func ircHandleChanModeChange(c *client, ch *channel, params []string) {
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modes, present := ch.userModes[c]
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mp := &modeProcessor{
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c: c,
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ch: ch,
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present: present,
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modes: modes,
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params: params,
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}
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Outer:
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for {
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modeString := mp.nextParam()
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if modeString == "" {
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break
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}
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mp.step('+')
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for _, modeChar := range []byte(modeString) {
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if !mp.step(modeChar) {
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break Outer
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}
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}
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}
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// TODO: Limit to three changes with parameter per command.
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if len(mp.added) > 0 || len(mp.removed) > 0 {
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buf := []byte(fmt.Sprintf(":%s!%s@%s MODE %s ",
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mp.c.nickname, mp.c.username, mp.c.hostname, mp.ch.name))
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if len(mp.added) > 0 {
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buf = append(buf, '+')
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buf = append(buf, mp.added...)
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}
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if len(mp.removed) > 0 {
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buf = append(buf, '-')
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||||
buf = append(buf, mp.removed...)
|
||||
}
|
||||
for _, param := range mp.addedParams {
|
||||
buf = append(buf, ' ')
|
||||
buf = append(buf, param...)
|
||||
}
|
||||
for _, param := range mp.removedParams {
|
||||
buf = append(buf, ' ')
|
||||
buf = append(buf, param...)
|
||||
}
|
||||
ircChannelMulticast(mp.ch, string(buf), nil)
|
||||
}
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
|
||||
func ircHandleMODE(msg *message, c *client) {
|
||||
if len(msg.params) < 1 {
|
||||
@ -1259,17 +1672,32 @@ func ircHandleMODE(msg *message, c *client) {
|
||||
return
|
||||
}
|
||||
|
||||
// TODO
|
||||
target := msg.params[0]
|
||||
client := users[ircToCanon(target)]
|
||||
ch := users[ircToCanon(target)]
|
||||
ch := channels[ircToCanon(target)]
|
||||
|
||||
if client != nil {
|
||||
// TODO
|
||||
if ircEqual(target, c.nickname) {
|
||||
c.sendReply(ERR_USERSDONTMATCH)
|
||||
return
|
||||
}
|
||||
|
||||
if len(msg.params) < 2 {
|
||||
c.sendReply(RPL_UMODEIS, c.getMode())
|
||||
} else {
|
||||
ircHandleUserModeChange(c, msg.params[1])
|
||||
}
|
||||
} else if ch != nil {
|
||||
// TODO
|
||||
if len(msg.params) < 2 {
|
||||
_, present := ch.userModes[c]
|
||||
c.sendReply(RPL_CHANNELMODEIS, target, ch.getMode(present))
|
||||
c.sendReply(RPL_CREATIONTIME,
|
||||
target, ch.created/int64(time.Second))
|
||||
} else {
|
||||
ircHandleChanModeChange(c, ch, msg.params[1:])
|
||||
}
|
||||
} else {
|
||||
c.sendReply(ERR_NOSUCHNICK, target)
|
||||
}
|
||||
}
|
||||
|
||||
@ -1973,21 +2401,128 @@ func ircHandleADMIN(msg *message, c *client) {
|
||||
c.sendReply(ERR_NOADMININFO, serverName)
|
||||
}
|
||||
|
||||
// TODO: All the remaining command handlers.
|
||||
func ircHandleStatsLinks(c *client, msg *message) {
|
||||
// There is only an "l" query in RFC 2812 but we cannot link,
|
||||
// so instead we provide the "L" query giving information for all users.
|
||||
filter := ""
|
||||
if len(msg.params) > 1 {
|
||||
filter = msg.params[1]
|
||||
}
|
||||
|
||||
func ircHandleX(msg *message, c *client) {
|
||||
if len(msg.params) < 1 {
|
||||
for _, client := range users {
|
||||
if filter != "" && !ircEqual(client.nickname, filter) {
|
||||
continue
|
||||
}
|
||||
c.sendReply(RPL_STATSLINKINFO,
|
||||
client.address, // linkname
|
||||
len(client.sendQ), // sendq
|
||||
client.nSentMessages, client.sentBytes/1024,
|
||||
client.nReceivedMessages, client.receivedBytes/1024,
|
||||
(time.Now().UnixNano()-client.opened)/int64(time.Second))
|
||||
}
|
||||
}
|
||||
|
||||
func ircHandleStatsCommands(c *client) {
|
||||
for name, handler := range ircHandlers {
|
||||
if handler.nReceived > 0 {
|
||||
c.sendReply(RPL_STATSCOMMANDS, name,
|
||||
handler.nReceived, handler.bytesReceived, 0)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// We need to do it this way because of an initialization loop concerning
|
||||
// ircHandlers. Workaround proposed by rsc in #1817.
|
||||
var ircHandleStatsCommandsIndirect func(c *client)
|
||||
|
||||
func init() {
|
||||
ircHandleStatsCommandsIndirect = ircHandleStatsCommands
|
||||
}
|
||||
|
||||
func ircHandleStatsUptime(c *client) {
|
||||
uptime := (time.Now().UnixNano() - started) / int64(time.Second)
|
||||
|
||||
days := uptime / 60 / 60 / 24
|
||||
hours := (uptime % (60 * 60 * 24)) / 60 / 60
|
||||
mins := (uptime % (60 * 60)) / 60
|
||||
secs := uptime % 60
|
||||
|
||||
c.sendReply(RPL_STATSUPTIME, days, hours, mins, secs)
|
||||
}
|
||||
|
||||
func ircHandleSTATS(msg *message, c *client) {
|
||||
var query byte
|
||||
if len(msg.params) > 0 && len(msg.params[0]) > 0 {
|
||||
query = msg.params[0][0]
|
||||
}
|
||||
|
||||
if len(msg.params) > 1 && !isThisMe(msg.params[1]) {
|
||||
c.sendReply(ERR_NOSUCHSERVER, msg.params[0])
|
||||
return
|
||||
}
|
||||
if 0 == c.mode&ircUserModeOperator {
|
||||
c.sendReply(ERR_NOPRIVILEGES)
|
||||
return
|
||||
}
|
||||
|
||||
switch query {
|
||||
case 'L':
|
||||
ircHandleStatsLinks(c, msg)
|
||||
case 'm':
|
||||
ircHandleStatsCommandsIndirect(c)
|
||||
case 'u':
|
||||
ircHandleStatsUptime(c)
|
||||
}
|
||||
c.sendReply(RPL_ENDOFSTATS, query)
|
||||
}
|
||||
|
||||
func ircHandleLINKS(msg *message, c *client) {
|
||||
if len(msg.params) > 1 && !isThisMe(msg.params[0]) {
|
||||
c.sendReply(ERR_NEEDMOREPARAMS, msg.command)
|
||||
return
|
||||
}
|
||||
|
||||
mask := "*"
|
||||
if len(msg.params) > 0 {
|
||||
if len(msg.params) > 1 {
|
||||
mask = msg.params[1]
|
||||
} else {
|
||||
mask = msg.params[0]
|
||||
}
|
||||
}
|
||||
|
||||
if ircFnmatch(mask, serverName) {
|
||||
c.sendReply(RPL_LINKS, mask, serverName,
|
||||
0 /* hop count */, "TODO server_info from configuration")
|
||||
}
|
||||
c.sendReply(RPL_ENDOFLINKS, mask)
|
||||
}
|
||||
|
||||
func ircHandleKILL(msg *message, c *client) {
|
||||
if len(msg.params) < 2 {
|
||||
c.sendReply(ERR_NEEDMOREPARAMS, msg.command)
|
||||
return
|
||||
}
|
||||
if 0 == c.mode&ircUserModeOperator {
|
||||
c.sendReply(ERR_NOPRIVILEGES)
|
||||
return
|
||||
}
|
||||
|
||||
target := users[ircToCanon(msg.params[0])]
|
||||
if target == nil {
|
||||
c.sendReply(ERR_NOSUCHNICK, msg.params[0])
|
||||
return
|
||||
}
|
||||
|
||||
c.sendf(":%s!%s@%s KILL %s :%s",
|
||||
c.nickname, c.username, c.hostname, target.nickname, msg.params[1])
|
||||
target.closeLink(fmt.Sprintf("Killed by %s: %s", c.nickname, msg.params[1]))
|
||||
}
|
||||
|
||||
func ircHandleDIE(msg *message, c *client) {
|
||||
if 0 == c.mode&ircUserModeOperator {
|
||||
c.sendReply(ERR_NOPRIVILEGES)
|
||||
return
|
||||
}
|
||||
if !quitting {
|
||||
} else if !quitting {
|
||||
initiateQuit()
|
||||
}
|
||||
}
|
||||
@ -2015,6 +2550,8 @@ var ircHandlers = map[string]*ircCommand{
|
||||
"SUMMON": {true, ircHandleSUMMON, 0, 0},
|
||||
"AWAY": {true, ircHandleAWAY, 0, 0},
|
||||
"ADMIN": {true, ircHandleADMIN, 0, 0},
|
||||
"STATS": {true, ircHandleSTATS, 0, 0},
|
||||
"LINKS": {true, ircHandleLINKS, 0, 0},
|
||||
|
||||
"MODE": {true, ircHandleMODE, 0, 0},
|
||||
"PRIVMSG": {true, ircHandlePRIVMSG, 0, 0},
|
||||
@ -2031,7 +2568,8 @@ var ircHandlers = map[string]*ircCommand{
|
||||
"WHOWAS": {true, ircHandleWHOWAS, 0, 0},
|
||||
"ISON": {true, ircHandleISON, 0, 0},
|
||||
|
||||
"DIE": {true, ircHandleDIE, 0, 0},
|
||||
"KILL": {true, ircHandleKILL, 0, 0},
|
||||
"DIE": {true, ircHandleDIE, 0, 0},
|
||||
}
|
||||
|
||||
func ircProcessMessage(c *client, msg *message, raw string) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user