func (ui *UIHandler) serveUploadHelper(rw http.ResponseWriter, req *http.Request) {
if ui.root.Storage == nil {
httputil.ServeJSONError(rw, httputil.ServerError("No BlobRoot configured"))
return
}
mr, err := req.MultipartReader()
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("reading body: "+err.Error()))
return
}
var got []*uploadHelperGotItem
var modTime types.Time3339
for {
part, err := mr.NextPart()
if err == io.EOF {
break
}
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("reading body: "+err.Error()))
break
}
if part.FormName() == "modtime" {
payload, err := ioutil.ReadAll(part)
if err != nil {
log.Printf("ui uploadhelper: unable to read part for modtime: %v", err)
continue
}
modTime = types.ParseTime3339OrZero(string(payload))
continue
}
fileName := part.FileName()
if fileName == "" {
continue
}
br, err := schema.WriteFileFromReaderWithModTime(ui.root.Storage, fileName, modTime.Time(), part)
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("writing to blobserver: "+err.Error()))
return
}
got = append(got, &uploadHelperGotItem{
FileName: part.FileName(),
ModTime: modTime,
FormName: part.FormName(),
FileRef: br,
})
}
httputil.ReturnJSON(rw, &uploadHelperResponse{Got: got})
}
func (sh *SetupHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
if !auth.LocalhostAuthorized(req) {
fmt.Fprintf(rw,
"<html><body>Setup only allowed from localhost"+
"<p><a href='/'>Back</a></p>"+
"</body></html>\n")
return
}
if req.Method == "POST" {
err := req.ParseMultipartForm(10e6)
if err != nil {
httputil.ServerError(rw, req, err)
return
}
if len(req.Form) > 0 {
handleSetupChange(rw, req)
return
}
if strings.Contains(req.URL.Path, "restartCamli") {
err = osutil.RestartProcess()
if err != nil {
log.Fatal("Failed to restart: " + err.Error())
}
}
}
sendWizard(rw, req, false)
}
func (ui *UIHandler) serveUploadHelper(rw http.ResponseWriter, req *http.Request) {
if ui.root.Storage == nil {
httputil.ServeJSONError(rw, httputil.ServerError("No BlobRoot configured"))
return
}
mr, err := req.MultipartReader()
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("reading body: "+err.Error()))
return
}
var got []*uploadHelperGotItem
for {
part, err := mr.NextPart()
if err == io.EOF {
break
}
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("reading body: "+err.Error()))
break
}
fileName := part.FileName()
if fileName == "" {
continue
}
br, err := schema.WriteFileFromReader(ui.root.Storage, fileName, part)
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("writing to blobserver: "+err.Error()))
return
}
got = append(got, &uploadHelperGotItem{
FileName: part.FileName(),
FormName: part.FormName(),
FileRef: br,
})
}
httputil.ReturnJSON(rw, &uploadHelperResponse{Got: got})
}
func setupHome(rw http.ResponseWriter, req *http.Request) {
port := httputil.RequestTargetPort(req)
localhostAddr, err := netutil.Localhost()
if err != nil {
httputil.ServerError(rw, req, err)
}
ourAddr := &net.TCPAddr{IP: localhostAddr, Port: port}
rAddr, err := net.ResolveTCPAddr("tcp", req.RemoteAddr)
if err != nil {
fmt.Printf("camlistored: unable to resolve RemoteAddr %q: %v", req.RemoteAddr, err)
return
}
uid, err := netutil.AddrPairUserid(rAddr, ourAddr)
if err != nil {
httputil.ServerError(rw, req, err)
}
fmt.Fprintf(rw, "Hello %q\n", req.RemoteAddr)
fmt.Fprintf(rw, "<p>uid = %d\n", syscall.Getuid())
fmt.Fprintf(rw, "<p>euid = %d\n", syscall.Geteuid())
fmt.Fprintf(rw, "<p>http_local_uid(%q => %q) = %d (%v)\n", req.RemoteAddr, ourAddr, uid, err)
}
func sendWizard(rw http.ResponseWriter, req *http.Request, hasChanged bool) {
config, err := jsonconfig.ReadFile(osutil.UserServerConfigPath())
if err != nil {
httputil.ServerError(rw, req, err)
return
}
err = flattenPublish(config)
if err != nil {
httputil.ServerError(rw, req, err)
return
}
funcMap := template.FuncMap{
"printWizard": printWizard,
"inputIsGallery": func(inputName string) bool { return inputName == "gallery" },
}
body := `<form id="WizardForm" action="setup" method="post" enctype="multipart/form-data">`
body += `{{range $k,$v := .}}{{printf "%v" $k}} <input type="text" size="30" name ="{{printf "%v" $k}}" value="{{printWizard $v}}" {{if inputIsGallery $k}}placeholder="/pics/,sha1-xxxx,pics.css"{{end}}><br />{{end}}`
body += `<input type="submit" form="WizardForm" value="Save"></form>`
if hasChanged {
body += `<p> Configuration succesfully rewritten </p>`
}
tmpl, err := template.New("wizard").Funcs(funcMap).Parse(topWizard + body + bottomWizard)
if err != nil {
httputil.ServerError(rw, req, err)
return
}
err = tmpl.Execute(rw, config)
if err != nil {
httputil.ServerError(rw, req, err)
return
}
}
func discoveryHelper(rw http.ResponseWriter, req *http.Request, dr *camtypes.Discovery) {
rw.Header().Set("Content-Type", "text/javascript")
if cb := req.FormValue("cb"); identOrDotPattern.MatchString(cb) {
fmt.Fprintf(rw, "%s(", cb)
defer rw.Write([]byte(");\n"))
} else if v := req.FormValue("var"); identOrDotPattern.MatchString(v) {
fmt.Fprintf(rw, "%s = ", v)
defer rw.Write([]byte(";\n"))
}
bytes, err := json.MarshalIndent(dr, "", " ")
if err != nil {
httputil.ServeJSONError(rw, httputil.ServerError("encoding discovery information: "+err.Error()))
return
}
rw.Write(bytes)
}
func handlePut(conn http.ResponseWriter, req *http.Request, blobReceiver blobserver.BlobReceiver) {
if w, ok := blobReceiver.(blobserver.ContextWrapper); ok {
blobReceiver = w.WrapContext(req)
}
blobRef := blobref.FromPattern(kPutPattern, req.URL.Path)
if blobRef == nil {
httputil.BadRequestError(conn, "Malformed PUT URL.")
return
}
if !blobRef.IsSupported() {
httputil.BadRequestError(conn, "unsupported object hash function")
return
}
_, err := blobReceiver.ReceiveBlob(blobRef, req.Body)
if err != nil {
httputil.ServerError(conn, err)
return
}
fmt.Fprint(conn, "OK")
}
func handleSetupChange(rw http.ResponseWriter, req *http.Request) {
hilevelConf, err := jsonconfig.ReadFile(osutil.UserServerConfigPath())
if err != nil {
httputil.ServerError(rw, req, err)
return
}
hasChanged := false
var el interface{}
publish := jsonconfig.Obj{}
for k, v := range req.Form {
if _, ok := hilevelConf[k]; !ok {
if k != "gallery" && k != "blog" {
continue
}
}
switch k {
case "https":
b, err := strconv.ParseBool(v[0])
if err != nil {
httputil.ServerError(rw, req, fmt.Errorf("https field expects a boolean value"))
}
el = b
case "replicateTo":
// TODO(mpl): figure out why it is always seen as different from the conf
el = []interface{}{}
if len(v[0]) > 0 {
els := []string{}
vals := strings.Split(v[0], ",")
els = append(els, vals...)
el = els
}
// TODO(mpl): "handler,rootPermanode[,style]" for each published entity for now.
// we will need something more readable later probably
case "gallery", "blog":
if len(v[0]) > 0 {
pub := strings.Split(v[0], ",")
if len(pub) < 2 || len(pub) > 3 {
// no need to fail loudly for now as we'll probably change this format
continue
}
handler := jsonconfig.Obj{}
handler["template"] = k
handler["rootPermanode"] = pub[1]
if len(pub) > 2 {
handler["style"] = pub[2]
}
publish[pub[0]] = handler
}
continue
default:
el = v[0]
}
if reflect.DeepEqual(hilevelConf[k], el) {
continue
}
hasChanged = true
hilevelConf[k] = el
}
// "publish" wasn't checked yet
if !reflect.DeepEqual(hilevelConf["publish"], publish) {
hilevelConf["publish"] = publish
hasChanged = true
}
if hasChanged {
err = rewriteConfig(&hilevelConf, osutil.UserServerConfigPath())
if err != nil {
httputil.ServerError(rw, req, err)
return
}
}
sendWizard(rw, req, hasChanged)
return
}
// serveBlobRef sends 'blobref' to 'conn' as directed by the Range header in 'req'
func serveBlobRef(conn http.ResponseWriter, req *http.Request,
blobRef *blobref.BlobRef, fetcher blobref.StreamingFetcher) {
if w, ok := fetcher.(blobserver.ContextWrapper); ok {
fetcher = w.WrapContext(req)
}
file, size, err := fetcher.FetchStreaming(blobRef)
switch err {
case nil:
break
case os.ErrNotExist:
conn.WriteHeader(http.StatusNotFound)
fmt.Fprintf(conn, "Blob %q not found", blobRef)
return
default:
httputil.ServerError(conn, req, err)
return
}
defer file.Close()
seeker, isSeeker := file.(io.Seeker)
reqRange := httprange.FromRequest(req)
if reqRange.SkipBytes() != 0 && isSeeker {
// TODO: set the Range-specific response headers too,
// acknowledging that we honored the content range
// request.
_, err = seeker.Seek(reqRange.SkipBytes(), 0)
if err != nil {
httputil.ServerError(conn, req, err)
return
}
}
var input io.Reader = file
if reqRange.LimitBytes() != -1 {
input = io.LimitReader(file, reqRange.LimitBytes())
}
remainBytes := size - reqRange.SkipBytes()
if reqRange.LimitBytes() != -1 &&
reqRange.LimitBytes() < remainBytes {
remainBytes = reqRange.LimitBytes()
}
conn.Header().Set("Content-Type", "application/octet-stream")
if reqRange.IsWholeFile() {
conn.Header().Set("Content-Length", strconv.FormatInt(size, 10))
// If it's small and all UTF-8, assume it's text and
// just render it in the browser. This is more for
// demos/debuggability than anything else. It isn't
// part of the spec.
if size <= 32<<10 {
var buf bytes.Buffer
_, err := io.Copy(&buf, input)
if err != nil {
httputil.ServerError(conn, req, err)
return
}
if utf8.Valid(buf.Bytes()) {
conn.Header().Set("Content-Type", "text/plain; charset=utf-8")
}
input = &buf
}
}
if !reqRange.IsWholeFile() {
conn.Header().Set("Content-Range",
fmt.Sprintf("bytes %d-%d/%d", reqRange.SkipBytes(),
reqRange.SkipBytes()+remainBytes,
size))
conn.WriteHeader(http.StatusPartialContent)
}
bytesCopied, err := io.Copy(conn, input)
// If there's an error at this point, it's too late to tell the client,
// as they've already been receiving bytes. But they should be smart enough
// to verify the digest doesn't match. But we close the (chunked) response anyway,
// to further signal errors.
killConnection := func() {
if hj, ok := conn.(http.Hijacker); ok {
log.Printf("Force-closing TCP connection to signal error sending %q", blobRef)
if closer, _, err := hj.Hijack(); err != nil {
closer.Close()
}
}
}
if err != nil {
fmt.Fprintf(os.Stderr, "Error sending file: %v, err=%v\n", blobRef, err)
killConnection()
return
}
if bytesCopied != remainBytes {
fmt.Fprintf(os.Stderr, "Error sending file: %v, copied=%d, not %d\n", blobRef,
bytesCopied, remainBytes)
killConnection()
return
}
}
func handleStat(conn http.ResponseWriter, req *http.Request, storage blobserver.BlobStatter) {
if w, ok := storage.(blobserver.ContextWrapper); ok {
storage = w.WrapContext(req)
}
toStat := make([]*blobref.BlobRef, 0)
switch req.Method {
case "POST":
fallthrough
case "GET":
camliVersion := req.FormValue("camliversion")
if camliVersion == "" {
httputil.BadRequestError(conn, "No camliversion")
return
}
n := 0
for {
n++
key := fmt.Sprintf("blob%v", n)
value := req.FormValue(key)
if value == "" {
n--
break
}
if n > maxStatBlobs {
httputil.BadRequestError(conn, "Too many stat blob checks")
return
}
ref := blobref.Parse(value)
if ref == nil {
httputil.BadRequestError(conn, "Bogus blobref for key "+key)
return
}
toStat = append(toStat, ref)
}
default:
httputil.BadRequestError(conn, "Invalid method.")
return
}
waitSeconds := 0
if waitStr := req.FormValue("maxwaitsec"); waitStr != "" {
waitSeconds, _ = strconv.Atoi(waitStr)
switch {
case waitSeconds < 0:
waitSeconds = 0
case waitSeconds > 30:
// TODO: don't hard-code 30. push this up into a blobserver interface
// for getting the configuration of the server (ultimately a flag in
// in the binary)
waitSeconds = 30
}
}
statRes := make([]map[string]interface{}, 0)
if len(toStat) > 0 {
blobch := make(chan blobref.SizedBlobRef)
resultch := make(chan error, 1)
go func() {
err := storage.StatBlobs(blobch, toStat, time.Duration(waitSeconds)*time.Second)
close(blobch)
resultch <- err
}()
for sb := range blobch {
ah := make(map[string]interface{})
ah["blobRef"] = sb.BlobRef.String()
ah["size"] = sb.Size
statRes = append(statRes, ah)
}
err := <-resultch
if err != nil {
log.Printf("Stat error: %v", err)
conn.WriteHeader(http.StatusInternalServerError)
return
}
}
configer, _ := storage.(blobserver.Configer)
ret, err := commonUploadResponse(configer, req)
if err != nil {
httputil.ServerError(conn, req, err)
}
ret["canLongPoll"] = false
if configer != nil {
if conf := configer.Config(); conf != nil {
ret["canLongPoll"] = conf.CanLongPoll
}
}
ret["stat"] = statRes
httputil.ReturnJSON(conn, ret)
}
func handleMultiPartUpload(conn http.ResponseWriter, req *http.Request, blobReceiver blobserver.BlobReceiveConfiger) {
if w, ok := blobReceiver.(blobserver.ContextWrapper); ok {
blobReceiver = wrapReceiveConfiger(w, req, blobReceiver)
}
if !(req.Method == "POST" && strings.Contains(req.URL.Path, "/camli/upload")) {
log.Printf("Inconfigured handler upload handler")
httputil.BadRequestError(conn, "Inconfigured handler.")
return
}
receivedBlobs := make([]blobref.SizedBlobRef, 0, 10)
multipart, err := req.MultipartReader()
if multipart == nil {
httputil.BadRequestError(conn, fmt.Sprintf(
"Expected multipart/form-data POST request; %v", err))
return
}
var errText string
addError := func(s string) {
log.Printf("Client error: %s", s)
if errText == "" {
errText = s
return
}
errText = errText + "\n" + s
}
for {
mimePart, err := multipart.NextPart()
if err == io.EOF {
break
}
if err != nil {
addError(fmt.Sprintf("Error reading multipart section: %v", err))
break
}
//POST-r60:
//contentDisposition, params, err := mime.ParseMediaType(mimePart.Header.Get("Content-Disposition"))
//if err != nil {
// addError(err.String())
// break
//}
// r60:
contentDisposition, params, err := mime.ParseMediaType(mimePart.Header.Get("Content-Disposition"))
if contentDisposition == "" || err != nil {
addError("invalid Content-Disposition")
break
}
if contentDisposition != "form-data" {
addError(fmt.Sprintf("Expected Content-Disposition of \"form-data\"; got %q", contentDisposition))
break
}
formName := params["name"]
ref := blobref.Parse(formName)
if ref == nil {
addError(fmt.Sprintf("Ignoring form key %q", formName))
continue
}
if oldAppEngineHappySpec {
_, hasContentType := mimePart.Header["Content-Type"]
if !hasContentType {
addError(fmt.Sprintf("Expected Content-Type header for blobref %s; see spec", ref))
continue
}
_, hasFileName := params["filename"]
if !hasFileName {
addError(fmt.Sprintf("Expected 'filename' Content-Disposition parameter for blobref %s; see spec", ref))
continue
}
}
blobGot, err := blobReceiver.ReceiveBlob(ref, mimePart)
if err != nil {
addError(fmt.Sprintf("Error receiving blob %v: %v\n", ref, err))
break
}
log.Printf("Received blob %v\n", blobGot)
receivedBlobs = append(receivedBlobs, blobGot)
}
ret, err := commonUploadResponse(blobReceiver, req)
if err != nil {
httputil.ServerError(conn, req, err)
}
received := make([]map[string]interface{}, 0)
for _, got := range receivedBlobs {
blob := make(map[string]interface{})
blob["blobRef"] = got.BlobRef.String()
blob["size"] = got.Size
received = append(received, blob)
}
ret["received"] = received
if req.Header.Get("X-Camlistore-Vivify") == "1" {
for _, got := range receivedBlobs {
err := vivify(blobReceiver, got)
if err != nil {
addError(fmt.Sprintf("Error vivifying blob %v: %v\n", got.BlobRef.String(), err))
} else {
conn.Header().Add("X-Camlistore-Vivified", got.BlobRef.String())
}
}
}
if errText != "" {
ret["errorText"] = errText
}
httputil.ReturnJSON(conn, ret)
}
// serveBlobRef sends 'blobref' to 'conn' as directed by the Range header in 'req'
func serveBlobRef(conn http.ResponseWriter, req *http.Request,
blobRef *blobref.BlobRef, fetcher blobref.StreamingFetcher) {
if w, ok := fetcher.(blobserver.ContextWrapper); ok {
fetcher = w.WrapContext(req)
}
file, size, err := fetcher.FetchStreaming(blobRef)
switch err {
case nil:
break
case os.ErrNotExist:
conn.WriteHeader(http.StatusNotFound)
fmt.Fprintf(conn, "Blob %q not found", blobRef)
return
default:
httputil.ServerError(conn, req, err)
return
}
defer file.Close()
seeker, isSeeker := file.(io.Seeker)
reqRange := httprange.FromRequest(req)
if reqRange.SkipBytes() != 0 && isSeeker {
// TODO: set the Range-specific response headers too,
// acknowledging that we honored the content range
// request.
_, err = seeker.Seek(reqRange.SkipBytes(), 0)
if err != nil {
httputil.ServerError(conn, req, err)
return
}
}
var input io.Reader = file
if reqRange.LimitBytes() != -1 {
input = io.LimitReader(file, reqRange.LimitBytes())
}
remainBytes := size - reqRange.SkipBytes()
if reqRange.LimitBytes() != -1 &&
reqRange.LimitBytes() < remainBytes {
remainBytes = reqRange.LimitBytes()
}
// Assume this generic content type by default. For better
// demos we'll try to sniff and guess the "right" MIME type in
// certain cases (no Range requests, etc) but this isn't part
// of the Camli spec at all. We just do it to ease demos.
contentType := "application/octet-stream"
if reqRange.IsWholeFile() {
const peekSize = 1024
bufReader := bufio.NewReaderSize(input, peekSize)
header, _ := bufReader.Peek(peekSize)
if len(header) >= 8 {
switch {
case utf8.Valid(header):
contentType = "text/plain; charset=utf-8"
case bytes.HasPrefix(header, []byte{0xff, 0xd8, 0xff, 0xe2}):
contentType = "image/jpeg"
case bytes.HasPrefix(header, []byte{0x89, 0x50, 0x4e, 0x47, 0xd, 0xa, 0x1a, 0xa}):
contentType = "image/png"
}
}
input = bufReader
conn.Header().Set("Content-Length", strconv.FormatInt(size, 10))
}
conn.Header().Set("Content-Type", contentType)
if !reqRange.IsWholeFile() {
conn.Header().Set("Content-Range",
fmt.Sprintf("bytes %d-%d/%d", reqRange.SkipBytes(),
reqRange.SkipBytes()+remainBytes,
size))
conn.WriteHeader(http.StatusPartialContent)
}
bytesCopied, err := io.Copy(conn, input)
// If there's an error at this point, it's too late to tell the client,
// as they've already been receiving bytes. But they should be smart enough
// to verify the digest doesn't match. But we close the (chunked) response anyway,
// to further signal errors.
killConnection := func() {
if hj, ok := conn.(http.Hijacker); ok {
log.Printf("Force-closing TCP connection to signal error sending %q", blobRef)
if closer, _, err := hj.Hijack(); err != nil {
closer.Close()
}
}
}
if err != nil {
fmt.Fprintf(os.Stderr, "Error sending file: %v, err=%v\n", blobRef, err)
killConnection()
return
}
if bytesCopied != remainBytes {
fmt.Fprintf(os.Stderr, "Error sending file: %v, copied=%d, not %d\n", blobRef,
bytesCopied, remainBytes)
killConnection()
return
}
}
