func serveError502(conn *http.Conn, host string) {
conn.WriteHeader(http.StatusBadGateway)
conn.SetHeader(contentType, textHTML)
conn.SetHeader(contentLength, error502Length)
conn.Write(error502)
logRequest(http.StatusBadGateway, host, conn)
}
func (set *TileServer) ServeHTTP(conn *http.Conn, req *http.Request) {
req.ParseForm()
var x, y, zoom int
x, err := strconv.Atoi(req.Form["x"][0])
if err == nil {
y, err = strconv.Atoi(req.Form["y"][0])
}
if err == nil {
zoom, err = strconv.Atoi(req.Form["z"][0])
}
if err != nil {
fmt.Println("Err:", err.String())
conn.WriteHeader(404)
return
}
tile := set.GetTile(x, y, zoom)
if tile == nil {
fmt.Println("No tile at", x, y, zoom)
conn.WriteHeader(404)
return
}
conn.Write(tile)
}
func add(c *http.Conn, req *http.Request) {
if req.Method == "POST" && len(strings.TrimSpace(req.FormValue("code"))) > 0 {
paste := savePaste(req.FormValue("code"), req.FormValue("private") != "")
c.SetHeader("Location", "/view/"+paste)
c.WriteHeader(http.StatusFound)
} else {
c.Write(strings.Bytes("No code submitted.\n"))
}
}
// url: /blog/entry/add
func AddEntry(c *http.Conn, req *http.Request) {
req.ParseForm();
heading, body := req.FormValue("heading"), req.FormValue("body");
if len(heading) > 0 && len(body) > 0 {
blog.AddEntry(heading, body)
}
c.SetHeader("Location", "/blog");
c.WriteHeader(http.StatusFound);
}
func (proxy *Proxy) ServeHTTP(conn *http.Conn, req *http.Request) {
// Open a connection to the Hub.
hubconn, err := net.Dial("tcp", "", remoteAddr)
if err != nil {
if debugMode {
fmt.Printf("Couldn't connect to remote %s: %v\n", remoteHost, err)
}
return
}
hub := tls.Client(hubconn, tlsconf.Config)
defer hub.Close()
// Modify the request Host: header.
req.Host = remoteHost
// Send the request to the Hub.
err = req.Write(hub)
if err != nil {
if debugMode {
fmt.Printf("Error writing to the hub: %v\n", err)
}
return
}
// Parse the response from the Hub.
resp, err := http.ReadResponse(bufio.NewReader(hub), req.Method)
if err != nil {
if debugMode {
fmt.Printf("Error parsing response from the hub: %v\n", err)
}
return
}
// Set the received headers back to the initial connection.
for k, v := range resp.Header {
conn.SetHeader(k, v)
}
// Read the full response body.
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
if debugMode {
fmt.Printf("Error reading response from the hub: %v\n", err)
}
resp.Body.Close()
return
}
// Write the response body back to the initial connection.
resp.Body.Close()
conn.WriteHeader(resp.StatusCode)
conn.Write(body)
}
func (s *Swif) handleError(code int, c *http.Conn) {
switch code {
case http.StatusBadRequest:
c.WriteHeader(code)
io.WriteString(c, "Invalid Request")
default:
c.WriteHeader(http.StatusBadRequest)
io.WriteString(c, "Invalid Request")
}
}
// url: /blog/comment/add
func AddComment(c *http.Conn, req *http.Request) {
req.ParseForm();
entryIDString, text := req.FormValue("entry_id"), req.FormValue("text");
if len(entryIDString) > 0 && len(text) > 0 {
if entryID, parseErr := strconv.Atoi(entryIDString); parseErr == nil {
if foundEntry := blog.FindEntry(entryID); foundEntry != nil {
foundEntry.AddComment(text);
}
}
}
c.SetHeader("Location", "/blog/entry/" + entryIDString);
c.WriteHeader(http.StatusFound);
}
func FileServer(c *http.Conn, req *http.Request) {
c.SetHeader("content-type", "text/plain; charset=utf-8")
pathVar.Add(req.URL.Path, 1)
path := *webroot + req.URL.Path // TODO: insecure: use os.CleanName
f, err := os.Open(path, os.O_RDONLY, 0)
if err != nil {
c.WriteHeader(http.StatusNotFound)
fmt.Fprintf(c, "open %s: %v\n", path, err)
return
}
n, _ := io.Copy(c, f)
fmt.Fprintf(c, "[%d bytes]\n", n)
f.Close()
}
func serveHTTP(c *http.Conn, req *http.Request) {
if req.Method != "CONNECT" {
c.SetHeader("Content-Type", "text/plain; charset=utf-8")
c.WriteHeader(http.StatusMethodNotAllowed)
io.WriteString(c, "405 must CONNECT to "+rpcPath+"\n")
return
}
conn, _, err := c.Hijack()
if err != nil {
log.Stderr("rpc hijacking ", c.RemoteAddr, ": ", err.String())
return
}
io.WriteString(conn, "HTTP/1.0 "+connected+"\n\n")
server.input(conn)
}
// url: /blog
func Index(c *http.Conn, req *http.Request) {
revEntries := blog.EntriesReversed();
frontPageEntries := make([]frontPageEntry, len(revEntries));
for i, e := range revEntries {
frontPageEntries[i].Entry = e;
frontPageEntries[i].CommentCount = e.Comments.Len();
}
if tmpl, err := loadTemplate("index.html"); err == nil {
tmpl.Execute(frontPageEntries, c);
} else {
c.SetHeader("Content-Type", "text/plain; charset=utf-8");
c.WriteHeader(http.StatusInternalServerError);
io.WriteString(c, "500 internal server error\n");
}
}
func (redirector *Redirector) ServeHTTP(conn *http.Conn, req *http.Request) {
var url string
if len(req.URL.RawQuery) > 0 {
url = fmt.Sprintf(redirectURLQuery, redirector.url, req.URL.Path, req.URL.RawQuery)
} else {
url = fmt.Sprintf(redirectURL, redirector.url, req.URL.Path)
}
if len(url) == 0 {
url = "/"
}
conn.SetHeader("Location", url)
conn.WriteHeader(http.StatusMovedPermanently)
fmt.Fprintf(conn, redirectHTML, url)
logRequest(http.StatusMovedPermanently, req.Host, conn)
}
func httpHandler(c *http.Conn, req *http.Request) {
path := req.URL.Path
//try to serve a static file
if strings.HasPrefix(path, "/static/") {
staticFile := path[8:]
if len(staticFile) > 0 {
http.ServeFile(c, req, "static/"+staticFile)
return
}
}
req.ParseForm()
resp := routeHandler((*Request)(req))
c.WriteHeader(resp.StatusCode)
if resp.Body != nil {
body, _ := ioutil.ReadAll(resp.Body)
c.Write(body)
}
}
func ServeTestHTTP(conn *http.Conn, req *http.Request) {
req.Close = true
if api_key, ok := req.Header["Authorization"]; !ok || api_key != API_KEY {
text := []byte(ERROR_CODES[http.StatusUnauthorized])
conn.SetHeader("Content-Type", "text/html;charset=ISO-8859-1")
conn.SetHeader("Cache-Control", "must-revalidate,no-cache,no-store")
conn.SetHeader("Content-Length", strconv.Itoa(len(text)))
conn.WriteHeader(http.StatusUnauthorized)
conn.Write(text)
conn.Flush()
return
}
if text, ok := URL_MAPPINGS[req.URL.Path]; ok {
conn.SetHeader("Content-Type", "application/xml;charset=UTF-8")
conn.SetHeader("Transfer-Encoding", "chunked")
// for some reason, api.rapleaf.com does not send Content-Length
// when sending stored data
conn.WriteHeader(http.StatusOK)
conn.Write([]byte(text))
conn.Flush()
return
}
text := []byte(ERROR_CODES[http.StatusNotFound])
conn.SetHeader("Content-Type", "text/html;charset=ISO-8859-1")
conn.SetHeader("Cache-Control", "must-revalidate,no-cache,no-store")
conn.SetHeader("Content-Length", strconv.Itoa(len(text)))
conn.WriteHeader(http.StatusNotFound)
conn.Write(text)
conn.Flush()
return
}
// url: /blog/entry/(\d+)
// 1: ID of blog post to show.
func Entry(c *http.Conn, req *http.Request) {
idString := req.URL.String();
idString = idString[len("/blog/entry/"):len(idString)];
if entryID, parseErr := strconv.Atoi(idString); parseErr == nil {
if foundEntry := blog.FindEntry(entryID); foundEntry != nil {
var entry singlePageEntry;
entry.Entry = foundEntry;
entry.Comments = foundEntry.Comments.Data();
entry.CommentCount = len(entry.Comments);
if tmpl, err := loadTemplate("entry.html"); err == nil {
tmpl.Execute(entry, c);
} else {
c.SetHeader("Content-Type", "text/plain; charset=utf-8");
c.WriteHeader(http.StatusInternalServerError);
io.WriteString(c, "500 internal server error\n");
}
} else {
c.SetHeader("Content-Type", "text/plain; charset=utf-8");
c.WriteHeader(http.StatusNotFound);
io.WriteString(c, "404 not found\n");
}
} else {
c.SetHeader("Content-Type", "text/plain; charset=utf-8");
c.WriteHeader(http.StatusInternalServerError);
io.WriteString(c, "500 internal server error\n");
}
}
// ServeHTTP implements the http.Handler interface for a Web Socket.
func (f Draft75Handler) ServeHTTP(c *http.Conn, req *http.Request) {
if req.Method != "GET" || req.Proto != "HTTP/1.1" {
c.WriteHeader(http.StatusBadRequest)
io.WriteString(c, "Unexpected request")
return
}
if req.Header["Upgrade"] != "WebSocket" {
c.WriteHeader(http.StatusBadRequest)
io.WriteString(c, "missing Upgrade: WebSocket header")
return
}
if req.Header["Connection"] != "Upgrade" {
c.WriteHeader(http.StatusBadRequest)
io.WriteString(c, "missing Connection: Upgrade header")
return
}
origin, found := req.Header["Origin"]
if !found {
c.WriteHeader(http.StatusBadRequest)
io.WriteString(c, "missing Origin header")
return
}
rwc, buf, err := c.Hijack()
if err != nil {
panic("Hijack failed: " + err.String())
return
}
defer rwc.Close()
location := "ws://" + req.Host + req.URL.RawPath
// TODO(ukai): verify origin,location,protocol.
buf.WriteString("HTTP/1.1 101 Web Socket Protocol Handshake\r\n")
buf.WriteString("Upgrade: WebSocket\r\n")
buf.WriteString("Connection: Upgrade\r\n")
buf.WriteString("WebSocket-Origin: " + origin + "\r\n")
buf.WriteString("WebSocket-Location: " + location + "\r\n")
protocol, found := req.Header["Websocket-Protocol"]
// canonical header key of WebSocket-Protocol.
if found {
buf.WriteString("WebSocket-Protocol: " + protocol + "\r\n")
}
buf.WriteString("\r\n")
if err := buf.Flush(); err != nil {
return
}
ws := newConn(origin, location, protocol, buf, rwc)
f(ws)
}
// ServeHTTP implements the http.Handler interface for a Web Socket.
func (f Handler) ServeHTTP(c *http.Conn, req *http.Request) {
if req.Method != "GET" || req.Proto != "HTTP/1.1" ||
req.Header["Upgrade"] != "WebSocket" ||
req.Header["Connection"] != "Upgrade" {
c.WriteHeader(http.StatusNotFound)
io.WriteString(c, "must use websocket to connect here")
return
}
rwc, buf, err := c.Hijack()
if err != nil {
panic("Hijack failed: ", err.String())
return
}
defer rwc.Close()
origin := req.Header["Origin"]
location := "ws://" + req.Host + req.URL.Path
// TODO(ukai): verify origin,location,protocol.
buf.WriteString("HTTP/1.1 101 Web Socket Protocol Handshake\r\n")
buf.WriteString("Upgrade: WebSocket\r\n")
buf.WriteString("Connection: Upgrade\r\n")
buf.WriteString("WebSocket-Origin: " + origin + "\r\n")
buf.WriteString("WebSocket-Location: " + location + "\r\n")
protocol := ""
// canonical header key of WebSocket-Protocol.
if protocol, found := req.Header["Websocket-Protocol"]; found {
buf.WriteString("WebSocket-Protocol: " + protocol + "\r\n")
}
buf.WriteString("\r\n")
if err := buf.Flush(); err != nil {
return
}
ws := newConn(origin, location, protocol, buf, rwc)
f(ws)
}
func HandleGarage(conn *http.Conn, req *http.Request) {
timeString := req.FormValue("t")
requestTime, err := strconv.Atoi64(timeString)
if len(timeString) == 0 || err != nil {
conn.WriteHeader(http.StatusBadRequest)
fmt.Fprintf(conn, "Missing/bogus 't' query parameter.")
return
}
if requestTime < time.Seconds()-60 {
conn.WriteHeader(http.StatusForbidden)
fmt.Fprintf(conn, "Request too old.")
return
}
key := req.FormValue("key")
if len(key) == 0 {
conn.WriteHeader(http.StatusBadRequest)
fmt.Fprintf(conn, "Missing 'key' query parameter.")
return
}
secretHasher := hmac.NewSHA1([]byte(sharedSecret))
fmt.Fprint(secretHasher, timeString)
expectedHash := fmt.Sprintf("%40x", secretHasher.Sum())
if key != expectedHash {
conn.WriteHeader(http.StatusForbidden)
fmt.Fprintf(conn, "Signature fail.")
return
}
fmt.Println("Opening garage door...")
cmd, err := exec.Run(
*heyUPath,
[]string{"heyu", "on", *x10Unit},
os.Environ(),
"/",
exec.DevNull, // stdin
exec.DevNull, // stdout
exec.MergeWithStdout) // stderr
if err != nil {
GarageOpenError(conn, err)
return
}
fmt.Printf("Started heyu with pid %v\n", cmd.Pid)
waitmsg, err := cmd.Wait(0)
if err != nil {
GarageOpenError(conn, err)
return
}
fmt.Printf("WaitMsg: %v\n", waitmsg)
if waitmsg.WaitStatus != 0 {
conn.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(conn, "x10 command returned error opening garage: %v", err)
return
}
fmt.Fprint(conn, "Opened.")
fmt.Printf("Garage opened at %v from %v\n",
time.LocalTime(),
conn.RemoteAddr)
}
func (frontend *Frontend) ServeHTTP(conn *http.Conn, req *http.Request) {
if frontend.enforceHost && req.Host != frontend.officialHost {
conn.SetHeader("Location", frontend.officialRedirectURL)
conn.WriteHeader(http.StatusMovedPermanently)
conn.Write(frontend.officialRedirectHTML)
logRequest(http.StatusMovedPermanently, req.Host, conn)
return
}
originalHost := req.Host
// Open a connection to the App Engine server.
gaeConn, err := net.Dial("tcp", "", frontend.gaeAddr)
if err != nil {
if debugMode {
fmt.Printf("Couldn't connect to remote %s: %v\n", frontend.gaeHost, err)
}
serveError502(conn, originalHost)
return
}
var gae net.Conn
if frontend.gaeTLS {
gae = tls.Client(gaeConn, tlsconf.Config)
defer gae.Close()
} else {
gae = gaeConn
}
// Modify the request Host: header.
req.Host = frontend.gaeHost
// Send the request to the App Engine server.
err = req.Write(gae)
if err != nil {
if debugMode {
fmt.Printf("Error writing to App Engine: %v\n", err)
}
serveError502(conn, originalHost)
return
}
// Parse the response from App Engine.
resp, err := http.ReadResponse(bufio.NewReader(gae), req.Method)
if err != nil {
if debugMode {
fmt.Printf("Error parsing response from App Engine: %v\n", err)
}
serveError502(conn, originalHost)
return
}
// Read the full response body.
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
if debugMode {
fmt.Printf("Error reading response from App Engine: %v\n", err)
}
serveError502(conn, originalHost)
resp.Body.Close()
return
}
// Set the received headers back to the initial connection.
for k, v := range resp.Header {
conn.SetHeader(k, v)
}
// Write the response body back to the initial connection.
resp.Body.Close()
conn.WriteHeader(resp.StatusCode)
conn.Write(body)
logRequest(resp.StatusCode, originalHost, conn)
}
func GarageOpenError(conn *http.Conn, err os.Error) {
fmt.Println("Error opening garage: ", err)
conn.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(conn, "Error opening garage: %v", err)
}
func Logger(c *http.Conn, req *http.Request) {
log.Stdout(req.URL.Raw)
c.WriteHeader(404)
c.Write([]byte("oops"))
}
