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Add parseMessageParams helper

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This commit is contained in:
Simon Ser 2020-02-07 12:36:02 +01:00
parent 6d03af8243
commit 96653499dc
No known key found for this signature in database
GPG Key ID: 0FDE7BE0E88F5E48
3 changed files with 61 additions and 46 deletions
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13
downstream.go
View File

@ -156,16 +156,15 @@ func (c *downstreamConn) handleMessage(msg *irc.Message) error {
func (c *downstreamConn) handleMessageUnregistered(msg *irc.Message) error {
switch msg.Command {
case "NICK":
if len(msg.Params) != 1 {
return newNeedMoreParamsError(msg.Command)
if err := parseMessageParams(msg, &c.nick); err != nil {
return err
}
c.nick = msg.Params[0]
case "USER":
if len(msg.Params) != 4 {
return newNeedMoreParamsError(msg.Command)
var username string
if err := parseMessageParams(msg, &username, nil, nil, &c.realname); err != nil {
return err
}
c.username = "~" + msg.Params[0]
c.realname = msg.Params[3]
c.username = "~" + username
default:
c.logger.Printf("unhandled message: %v", msg)
return newUnknownCommandError(msg.Command)

14
irc.go
View File

@ -3,6 +3,8 @@ package jounce
import (
"fmt"
"strings"
"gopkg.in/irc.v3"
)
const (
@ -90,3 +92,15 @@ func parseMembershipPrefix(s string) (prefix membership, nick string) {
return 0, s
}
}
func parseMessageParams(msg *irc.Message, out ...*string) error {
if len(msg.Params) < len(out) {
return newNeedMoreParamsError(msg.Command)
}
for i := range out {
if out[i] != nil {
*out[i] = msg.Params[i]
}
}
return nil
}

80
upstream.go
View File

@ -106,11 +106,10 @@ func (c *upstreamConn) handleMessage(msg *irc.Message) error {
}
return nil
case "MODE":
if len(msg.Params) < 2 {
return newNeedMoreParamsError(msg.Command)
var name, modeStr string
if err := parseMessageParams(msg, &name, &modeStr); err != nil {
return err
}
name := msg.Params[0]
modeStr := msg.Params[1]
if name == msg.Prefix.Name { // user mode change
if name != c.nick {
@ -143,20 +142,17 @@ func (c *upstreamConn) handleMessage(msg *irc.Message) error {
}
}
case irc.RPL_MYINFO:
if len(msg.Params) < 5 {
return newNeedMoreParamsError(msg.Command)
if err := parseMessageParams(msg, nil, &c.serverName, nil, &c.availableUserModes, &c.availableChannelModes); err != nil {
return err
}
c.serverName = msg.Params[1]
c.availableUserModes = msg.Params[3]
c.availableChannelModes = msg.Params[4]
if len(msg.Params) > 5 {
c.channelModesWithParam = msg.Params[5]
}
case "NICK":
if len(msg.Params) < 1 {
return newNeedMoreParamsError(msg.Command)
var newNick string
if err := parseMessageParams(msg, &newNick); err != nil {
return err
}
newNick := msg.Params[0]
if msg.Prefix.Name == c.nick {
c.logger.Printf("changed nick from %q to %q", c.nick, newNick)
@ -174,11 +170,12 @@ func (c *upstreamConn) handleMessage(msg *irc.Message) error {
dc.messages <- msg
})
case "JOIN":
if len(msg.Params) < 1 {
return newNeedMoreParamsError(msg.Command)
var channels string
if err := parseMessageParams(msg, &channels); err != nil {
return err
}
for _, ch := range strings.Split(msg.Params[0], ",") {
for _, ch := range strings.Split(channels, ",") {
if msg.Prefix.Name == c.nick {
c.logger.Printf("joined channel %q", ch)
c.channels[ch] = &upstreamChannel{
@ -198,11 +195,12 @@ func (c *upstreamConn) handleMessage(msg *irc.Message) error {
dc.messages <- msg
})
case "PART":
if len(msg.Params) < 1 {
return newNeedMoreParamsError(msg.Command)
var channels string
if err := parseMessageParams(msg, &channels); err != nil {
return err
}
for _, ch := range strings.Split(msg.Params[0], ",") {
for _, ch := range strings.Split(channels, ",") {
if msg.Prefix.Name == c.nick {
c.logger.Printf("parted channel %q", ch)
delete(c.channels, ch)
@ -219,23 +217,25 @@ func (c *upstreamConn) handleMessage(msg *irc.Message) error {
dc.messages <- msg
})
case irc.RPL_TOPIC, irc.RPL_NOTOPIC:
if len(msg.Params) < 3 {
return newNeedMoreParamsError(msg.Command)
var name, topic string
if err := parseMessageParams(msg, nil, &name, &topic); err != nil {
return err
}
ch, err := c.getChannel(msg.Params[1])
ch, err := c.getChannel(name)
if err != nil {
return err
}
if msg.Command == irc.RPL_TOPIC {
ch.Topic = msg.Params[2]
ch.Topic = topic
} else {
ch.Topic = ""
}
case "TOPIC":
if len(msg.Params) < 1 {
return newNeedMoreParamsError(msg.Command)
var name string
if err := parseMessageParams(msg, nil, &name); err != nil {
return err
}
ch, err := c.getChannel(msg.Params[0])
ch, err := c.getChannel(name)
if err != nil {
return err
}
@ -245,43 +245,46 @@ func (c *upstreamConn) handleMessage(msg *irc.Message) error {
ch.Topic = ""
}
case rpl_topicwhotime:
if len(msg.Params) < 4 {
return newNeedMoreParamsError(msg.Command)
var name, who, timeStr string
if err := parseMessageParams(msg, nil, &name, &who, &timeStr); err != nil {
return err
}
ch, err := c.getChannel(msg.Params[1])
ch, err := c.getChannel(name)
if err != nil {
return err
}
ch.TopicWho = msg.Params[2]
sec, err := strconv.ParseInt(msg.Params[3], 10, 64)
ch.TopicWho = who
sec, err := strconv.ParseInt(timeStr, 10, 64)
if err != nil {
return fmt.Errorf("failed to parse topic time: %v", err)
}
ch.TopicTime = time.Unix(sec, 0)
case irc.RPL_NAMREPLY:
if len(msg.Params) < 4 {
return newNeedMoreParamsError(msg.Command)
var name, statusStr, members string
if err := parseMessageParams(msg, nil, &statusStr, &name, &members); err != nil {
return err
}
ch, err := c.getChannel(msg.Params[2])
ch, err := c.getChannel(name)
if err != nil {
return err
}
status, err := parseChannelStatus(msg.Params[1])
status, err := parseChannelStatus(statusStr)
if err != nil {
return err
}
ch.Status = status
for _, s := range strings.Split(msg.Params[3], " ") {
for _, s := range strings.Split(members, " ") {
membership, nick := parseMembershipPrefix(s)
ch.Members[nick] = membership
}
case irc.RPL_ENDOFNAMES:
if len(msg.Params) < 2 {
return newNeedMoreParamsError(msg.Command)
var name string
if err := parseMessageParams(msg, nil, &name); err != nil {
return err
}
ch, err := c.getChannel(msg.Params[1])
ch, err := c.getChannel(name)
if err != nil {
return err
}
@ -322,7 +325,6 @@ func (c *upstreamConn) readMessages() error {
Command: "NICK",
Params: []string{c.upstream.Nick},
}
c.messages <- &irc.Message{
Command: "USER",
Params: []string{c.upstream.Username, "0", "*", c.upstream.Realname},