func handleConnection(log *logrus.Entry, c net.Conn, timeout time.Duration) {
var err error
defer c.Close()
writer := textproto.NewWriter(bufio.NewWriter(c))
// This is annoying
// if ApiWelcomeMessage != "" {
// writer.PrintfLine(ApiWelcomeMessage)
// }
bufc := bufio.NewReaderSize(c, 10*1024*1024)
for {
var msg []byte
select {
case <-Done:
return
default:
c.SetDeadline(time.Now().Add(timeout))
msg, err = bufc.ReadBytes('\n')
if err != nil {
if err.Error() != "EOF" {
log.WithError(err).Debug("Unable to read from connection")
if ApiErrorHandlerFn != nil {
ApiErrorHandlerFn(err, writer)
}
}
return
}
log.WithField("size", len(msg)).Debug("Read on connection")
for _, h := range ApiMessageHandlerFns {
h(msg, writer)
}
}
}
}
/*
CACHE <statusCode> <crc32>\r\n
Headers: Values\r\n
\r\n
<body>
*/
func (p *proxyWriter) cacheHeader() {
if p.c.useStale&Supdating == 0 {
p.lock()
}
hdr := p.rw.Header()
p.f = p.createf()
p.bw = bufio.NewWriter(p.f)
tpw := textproto.NewWriter(p.bw)
err := tpw.PrintfLine("CACHE %d %d", p.statusCode, p.st.crc)
if err != nil {
panic(err)
}
for k, v := range hdr {
switch k {
case "Cache-Control", "Expires":
continue
}
for _, s := range v {
err = tpw.PrintfLine("%s: %s", k, s)
if err != nil {
panic(err)
}
}
}
_, err = p.bw.WriteString("\r\n")
if err != nil {
panic(err)
}
}
func newHandler(s *server, conn net.Conn) *handler {
return &handler{
server: s,
conn: conn,
reader: textproto.NewReader(bufio.NewReader(conn)),
writer: textproto.NewWriter(bufio.NewWriter(conn)),
}
}
func (c *Conn) handleOutput() {
var w = textproto.NewWriter(bufio.NewWriter(c.c))
for {
select {
case out := <-c.Out:
w.PrintfLine(out)
case <-c.Err:
return
}
}
}
func newSession(server *Server, handler SessionHandler, conn net.Conn, isTLS bool) *session {
return &session{
server: server,
sHandler: handler,
conn: conn,
gotHelo: false,
isTLS: isTLS,
keepGoing: true,
reader: textproto.NewReader(bufio.NewReader(conn)),
writer: textproto.NewWriter(bufio.NewWriter(conn)),
}
}
func newIrcClient(conn net.Conn) *ircClient {
c := &ircClient{
conn,
textproto.NewWriter(bufio.NewWriter(conn)),
make(chan []string, 1024),
make(chan string, 1),
make(chan []string, 6),
}
go func() {
var line string
var fields []string
var err error
r := textproto.NewReader(bufio.NewReader(conn))
for {
if line, err = r.ReadLine(); err == nil {
fields = strings.Fields(line)[1:]
if len(fields) > 3 {
switch fields[0] {
case RPL_NAMREPLY:
c.namesReplies <- fields[2:]
case RPL_WHOISUSER, RPL_WHOISSERVER, RPL_WHOISOPERATOR, RPL_WHOISIDLE, RPL_ENDOFWHOIS, RPL_WHOISCHANNELS:
c.whoisReplies <- fields
case RPL_ENDOFNAMES:
default:
if Verbose {
fmt.Fprintln(os.Stderr, "\t ", line)
}
}
} else if len(fields) >= 2 && fields[0] == "PING" {
c.w.PrintfLine("PONG %s", fields[1])
} else {
if Verbose {
fmt.Fprintf(os.Stderr, "got some sort of short unhandled msg %q\n", line)
}
}
} else {
fmt.Fprintln(os.Stderr, err)
conn.Close()
break
}
}
}()
c.w.PrintfLine("NICK fc%x", rand.Int31())
c.w.PrintfLine("USER %x 8 * :%x", rand.Int31(), rand.Int31())
return c
}
// Dial connects to an IRC host.
func Dial(address string) (*Client, error) {
conn, err := net.Dial("tcp", address)
if err != nil {
return nil, err
}
client := Client{
conn: conn,
writer: textproto.NewWriter(bufio.NewWriter(conn)),
reader: textproto.NewReader(bufio.NewReader(conn)),
send: make(chan *Msg, 5),
recv: make(chan *Msg, 5),
handlers: make([]Handler, 0),
}
return &client, nil
}
func (self nntpFrontend) handle_connection(sock net.Conn) {
log.Println("incoming nntp frontend connection", sock.RemoteAddr())
// wrap the socket
r := textproto.NewReader(bufio.NewReader(sock))
w := textproto.NewWriter(bufio.NewWriter(sock))
var line, newsgroup string
// write out greeting
err := w.PrintfLine("201 ayyy srndv2 nntp frontend here, posting disallowed")
for {
if err != nil {
// abort it
log.Println("error handling nntp frontend connection", err)
break
}
line, err = r.ReadLine()
lline := strings.ToLower(line)
// we are in reader mode
if lline == "quit" {
break
} else if strings.HasPrefix(lline, "newsgroups ") {
// handle newsgroups command
// TODO: don't ignore dates
w.PrintfLine("231 list of newsgroups follows")
groups := self.db.GetAllNewsgroups()
dw := w.DotWriter()
for _, group := range groups {
last, first, err := self.db.GetLastAndFirstForGroup(group)
if err == nil {
io.WriteString(dw, fmt.Sprintf("%s %d %d y\r\n", group, last, first))
} else {
log.Println("cannot get last/first ids for group", group, err)
}
}
dw.Close()
} else if lline == "list" {
w.PrintfLine("215 list of newsgroups follows")
// handle list command
groups := self.db.GetAllNewsgroups()
dw := w.DotWriter()
for _, group := range groups {
last, first, err := self.db.GetLastAndFirstForGroup(group)
if err == nil {
io.WriteString(dw, fmt.Sprintf("%s %d %d y\r\n", group, last, first))
} else {
log.Println("cannot get last/first ids for group", group, err)
}
}
dw.Close()
} else if strings.HasPrefix(lline, "group ") {
// handle group command
newsgroup = lline[6:]
if self.db.HasNewsgroup(newsgroup) {
article_count := self.db.CountPostsInGroup(newsgroup, 0)
last, first, err := self.db.GetLastAndFirstForGroup(newsgroup)
if err == nil {
w.PrintfLine("211 %d %d %d %s", article_count, first, last, newsgroup)
} else {
w.PrintfLine("500 internal error, %s", err.Error())
}
} else {
w.PrintfLine("411 no such news group")
newsgroup = ""
}
} else if lline == "list overview.fmt" {
// handle overview listing
if newsgroup == "" {
// no newsgroup
w.PrintfLine("412 No newsgorup selected")
} else {
// assume we got the newsgroup set
dw := w.DotWriter()
// write out format
// TODO: hard coded
io.WriteString(dw, "215 Order of fields in overview database.\r\n")
io.WriteString(dw, "Subject:\r\nFrom:\r\nDate:\r\nMessage-ID:\r\nRefernces:\r\n")
dw.Close()
}
} else if strings.HasPrefix(lline, "xover ") {
if newsgroup == "" {
w.PrintfLine("412 No newsgroup selected")
} else {
// handle xover command
// every article
models, err := self.db.GetPostsInGroup(newsgroup)
if err == nil {
w.PrintfLine("224 Overview information follows")
dw := w.DotWriter()
for idx, model := range models {
io.WriteString(dw, fmt.Sprintf("%.6d\t%s\t\"%s\" <%s@%s>\t%s\t%s\t%s\r\n", idx+1, model.Subject(), model.Name(), model.Name(), model.Frontend(), model.Date(), model.MessageID(), model.Reference()))
}
dw.Close()
} else {
w.PrintfLine("500 error, %s", err.Error())
}
}
} else if strings.HasPrefix(lline, "article ") {
if newsgroup == "" {
w.PrintfLine("412 No Newsgroup Selected")
} else {
article := line[8:]
var msgid string
var article_no int64
if ValidMessageID(article) {
article_no = 0 // eh
} else {
article_no, err = strconv.ParseInt(article, 10, 32)
if err == nil {
msgid, err = self.db.GetMessageIDForNNTPID(newsgroup, article_no)
}
}
if err == nil {
w.PrintfLine("220 %d %s", article_no, msgid)
fname := self.store.GetFilename(msgid)
f, err := os.Open(fname)
if err == nil {
dw := w.DotWriter()
_, err = io.Copy(dw, f)
dw.Close()
f.Close()
}
} else {
w.PrintfLine("500 error, %s", err.Error())
}
}
} else if lline == "mode reader" {
w.PrintfLine("201 posting disallowed")
} else if strings.HasPrefix(lline, "mode ") {
// handle other mode
w.PrintfLine("%d mode not implemented", 501)
} else if lline == "capabilities" {
// send capabilities
dw := w.DotWriter()
io.WriteString(dw, "101 yeh we can do stuff\r\n")
io.WriteString(dw, "VERSION 2\r\n")
io.WriteString(dw, "IMPLEMENTATION srndv2 nntp frontend\r\n")
io.WriteString(dw, "READER\r\n")
dw.Close()
} else {
// idk what command this is, log it and report error
log.Println("invalid line from nntp frontend connection:", line)
w.PrintfLine("500 idk what that means")
}
}
sock.Close()
log.Println("nntp frontend connection closed")
}
func handleConnection(c *net.TCPConn) {
defer c.Close()
defer log.WithField("client", c.RemoteAddr()).Debug("Disconnected")
// var timeout = 60 * time.Second
var lastMsg []byte
var bufc = bufio.NewReader(c)
for {
var msg []byte
var err error
select {
default:
writer := textproto.NewWriter(bufio.NewWriter(c))
// c.SetDeadline(time.Now().Add(timeout))
msg, err = bufc.ReadBytes('\n')
if err != nil {
switch err.(type) {
case net.Error:
if err.(net.Error).Timeout() {
log.Warn("Connection timed out")
}
default:
if err != io.EOF {
log.WithField("error", err).Error("Reading bytes")
}
}
return
}
if bytes.Compare(bytes.TrimSpace(msg), []byte(`!!`)) == 0 {
log.WithField("msg", bytes.NewBuffer(lastMsg).String()).Info("Writing last message")
c.Write(lastMsg)
if err != nil {
log.WithField("err", err).Error("Unable to write last message")
}
msg = lastMsg
}
switch {
case bytes.HasPrefix(msg, []byte(`publish `)):
matches := publishCmd.FindSubmatch(msg)
if len(matches) != 3 {
err = errors.New(`Unrecognized pattern for command "publish"`)
} else {
// var event map[string]interface{}
// err := json.Unmarshal(matches[2], &event)
// if err != nil {
// log.WithFields(log.Fields{"err": err, "msg": string(matches[2])}).Error("Bad json")
// break
// }
err = nc.Publish(string(matches[1]), matches[2])
if err != nil {
log.WithField("err", err).Error("Publish failed")
break
}
log.Debug("Message published")
}
case bytes.HasPrefix(msg, []byte(`#`)):
// Comment line
msg = lastMsg
case len(bytes.TrimSpace(msg)) == 0:
// Empty line
msg = lastMsg
default:
err = errors.New("Unrecognized command")
}
if err != nil {
log.Error(err)
writer.PrintfLine(err.Error())
writer.PrintfLine(apiHelp())
}
lastMsg = msg
}
}
}
func (pconn *persistentConn) setControlConn(conn net.Conn) {
pconn.controlConn = conn
pconn.reader = textproto.NewReader(bufio.NewReader(conn))
pconn.writer = textproto.NewWriter(bufio.NewWriter(conn))
}
