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channel.go
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channel.go
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package main
import (
"bytes"
"fmt"
"os"
"bufio"
"strings"
"syscall"
)
import (
"go9p.googlecode.com/hg/p"
"go9p.googlecode.com/hg/p/srv"
irc "github.com/soul9/go-irc-chans"
)
type ChanCtl struct {
srv.File
status *bytes.Buffer
net *irc.Network
ircch string
}
type ChanLog struct {
srv.File
fname string
}
func toError(err os.Error) *p.Error {
var ecode os.Errno
ename := err.String()
if e, ok := err.(os.Errno); ok {
ecode = e
} else {
ecode = syscall.EIO
}
return &p.Error{ename, int(ecode)}
}
func (l *ChanLog) Read(fid *srv.FFid, buf []byte, offset uint64) (int, *p.Error) {
f, err := os.Open(l.fname, os.O_RDONLY|os.O_CREATE, 0660)
if err != nil {
fmt.Println("Can't open logfile for reading")
return 0, &p.Error{"Can't open logfile for reading", 0}
}
defer f.Close()
count, err := f.ReadAt(buf, int64(offset))
if err != nil && err != os.EOF {
fmt.Println(fmt.Sprintf("Couldn't read logfile: %s", err.String()))
return count, toError(err)
}
return count, nil
}
func (ctl *ChanLog) Write(fid *srv.FFid, data []byte, offset uint64) (int, *p.Error) {
return 0, &p.Error{"Read-only file", 0}
}
func (ctl *ChanCtl) Read(fid *srv.FFid, buf []byte, offset uint64) (int, *p.Error) {
b := ctl.status.Bytes()[offset:]
copy(buf, b)
l := len(b)
if len(buf) < l {
l = len(buf)
}
return l, nil
}
func (ctl *ChanCtl) Write(fid *srv.FFid, data []byte, offset uint64) (int, *p.Error) {
if offset > 0 {
return 0, &p.Error{"Long writes not supported", 0}
}
go func() {
lines := strings.Split(string(data), "\n", -1)
for _, line := range lines {
words := strings.Fields(line)
if len(words) == 0 {
return
}
fmt.Fprintf(ctl.status, ">> %v\n", words)
if words[0] == "msg" || words[0] == "m" {
if len(words) < 2 {
fmt.Fprintf(ctl.status, "<< Not enough params %v\n", words)
return
}
if err := ctl.net.Privmsg([]string{ctl.ircch}, strings.Join(words[1:], " ")); err != nil {
fmt.Fprintf(ctl.status, "<< %v: %s\n", words, err.String())
} else {
fmt.Fprintf(ctl.status, "<< ok %v\n", words)
}
return
}
}
}()
return len(data), nil
}
func chanName(name string) string {
c0 := name[0]
if c0 != '#' && c0 != '&' && c0 != '+' && c0 != '!' {
name = "#" + name
}
return name
}
func join(ctl *NetCtl, words []string) {
if len(words) < 2 || len(words) > 3 {
fmt.Fprintf(ctl.status, "<< syntax: join <network> <channel> [optional-key]\n")
return
}
var key string
if len(words) == 4 {
key = words[2]
}
name := words[1]
if _, err := ctl.net.Whois([]string{name}, ""); err != nil {
name = chanName(name)
if err := ctl.net.Join([]string{name}, []string{key}); err != nil { //TODO: join multiple chans, users?
fmt.Fprintf(ctl.status, "<< couldn't join %s: %s\n", name, err.String())
return
}
}
f := new(srv.File)
if err := f.Add(ctl.parent, name, user, nil, p.DMDIR|0771, nil); err != nil {
fmt.Fprintf(ctl.status, "<< %v\n", err)
return
}
c := new(ChanCtl)
c.net = ctl.net
c.status = new(bytes.Buffer)
c.ircch = name
if err := c.Add(f, "in", user, nil, 0660, c); err != nil {
fmt.Fprintf(ctl.status, "<< %v\n", err)
return
}
l := new(ChanLog)
l.fname = *logdir + "/" + ctl.netPretty + "/" + name + ".log"
if err := l.Add(f, "out", user, nil, 0440, l); err != nil {
fmt.Fprintf(ctl.status, "<< Couldn't create log file: %v\n", err)
return
}
exch := make(chan bool) //FIXME: need to have a list of chans and their logger's exchs
go logloop(name, c, exch, l.fname)
fmt.Fprintf(ctl.status, "<< ok %v\n", words)
}
func logloop(ircch string, ctl *ChanCtl, exch chan bool, fname string) {
logf, err := os.Open(fname, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0660)
if err != nil {
fmt.Fprintf(ctl.status, "Couldn't open file, no logging will be performed: %s\n", ircch)
return
}
defer logf.Close()
ch := make(chan *irc.IrcMessage, 10)
err = ctl.net.Listen.RegListener("PRIVMSG", ircch+"ircfs", ch)
if err != nil {
fmt.Fprintf(ctl.status, "Couldn't register listener, no logging will be performed: %s\n", ircch)
return
}
defer ctl.net.Listen.DelListener("PRIVMSG", ircch+"ircfs")
buf := bufio.NewWriter(logf)
for {
var msg = new(irc.IrcMessage)
select {
case msg = <-ch:
case <-exch:
return
}
if msg.Destination() == ircch {
_, err := buf.WriteString(fmt.Sprintf("%s\n", msg.String()))
if err != nil {
fmt.Fprintf(ctl.status, "Couldn't open file, no logging will be performed: %s\n", ircch)
return
}
err = buf.Flush()
if err != nil {
fmt.Fprintf(ctl.status, "Couldn't open file, no logging will be performed: %s\n", ircch)
return
}
}
}
}