func close_event(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
event, key, err_string := find_single_event(c, r.FormValue("sender"),
r.FormValue("date"))
if len(err_string) > 0 {
fmt.Fprintf(w, err_string)
return
}
// TODO: Check to make sure the closer matches the owner
if event.ClosedDate > 0 {
fmt.Fprintf(w, "This message is already closed.")
return
}
event.ClosedDate = datastore.SecondsToTime(time.Seconds())
_, err := datastore.Put(c, key, &event)
if err != nil {
fmt.Fprintf(w, err.String())
return
} else {
target_url := fmt.Sprintf("/show?sender=%s&date=%d", event.Sender,
event.RecieptDate)
http.Redirect(w, r, target_url, http.StatusFound)
}
}
func search(c *http.Conn, r *http.Request) {
query := strings.TrimSpace(r.FormValue("q"))
var result SearchResult
if index, timestamp := searchIndex.get(); index != nil {
result.Query = query
result.Hit, result.Alt, result.Illegal = index.(*Index).Lookup(query)
_, ts := fsTree.get()
result.Accurate = timestamp >= ts
}
var buf bytes.Buffer
if err := searchHTML.Execute(result, &buf); err != nil {
log.Stderrf("searchHTML.Execute: %s", err)
}
var title string
if result.Hit != nil {
title = fmt.Sprintf(`Results for query %q`, query)
} else {
title = fmt.Sprintf(`No results found for query %q`, query)
}
servePage(c, title, query, buf.Bytes())
}
func handleInboxItem(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
userid, _, err := getSession(c, r)
if err != nil {
sendError(w, r, "No session cookie")
return
}
s := newStore(c)
perma_blobref := r.FormValue("perma")
item, err := s.GetInboxItem(userid, perma_blobref)
if err != nil {
http.Error(w, "Could not get inbox item", http.StatusInternalServerError)
c.Errorf("handleInboxItem: %v", err)
return
}
entry := make(map[string]interface{})
entry["perma"] = perma_blobref
entry["seq"] = item.LastSeq
err = fillInboxItem(s, perma_blobref, item.LastSeq, entry)
if err != nil {
fmt.Fprintf(w, `{"ok":false, "error":%v}`, err.String())
return
}
info, _ := json.Marshal(entry)
fmt.Fprintf(w, `{"ok":true, "item":%v}`, string(info))
}
func serveFile(c *http.Conn, r *http.Request) {
path := r.Url.Path
// pick off special cases and hand the rest to the standard file server
switch ext := pathutil.Ext(path); {
case path == "/":
serveHtmlDoc(c, r, "doc/root.html")
case r.Url.Path == "/doc/root.html":
// hide landing page from its real name
http.NotFound(c, r)
case ext == ".html":
serveHtmlDoc(c, r, path)
case ext == ".go":
serveGoSource(c, path, &Styler{highlight: r.FormValue("h")})
default:
// TODO:
// - need to decide what to serve and what not to serve
// - don't want to download files, want to see them
fileServer.ServeHTTP(c, r)
}
}
func get(w http.ResponseWriter, r *http.Request) {
keyName := r.FormValue("key")
c := appengine.NewContext(r)
result := map[string]string{
keyName: "",
"error": "",
}
if item, err := memcache.Get(c, keyName); err == nil {
result[keyName] = fmt.Sprintf("%q", item.Value)
fmt.Fprintf(w, "%s", mapToJson(result))
return
}
key := datastore.NewKey("Entity", keyName, 0, nil)
entity := new(Entity)
if err := datastore.Get(c, key, entity); err == nil {
result[keyName] = entity.Value
// Set the value to speed up future reads - errors here aren't
// that bad, so don't worry about them
item := &memcache.Item{
Key: keyName,
Value: []byte(entity.Value),
}
memcache.Set(c, item)
} else {
result["error"] = fmt.Sprintf("%s", err)
}
fmt.Fprintf(w, "%s", mapToJson(result))
}
func c1LoginHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
if l, err := c1IsLoggedIn(c); err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
} else if l {
/// http.Redirect(w, r, "/", http.StatusFound)
http.Redirect(w, r, "/index", http.StatusFound)
return
}
if r.Method == "GET" {
w.Write([]byte(
"<html><body><form action='/c1Login' method='POST'>" +
"<input type='text' name='usr'></input>" +
"<input type='password' name='pwd'></input>" +
"<input type='submit' value='Submit'></input>" +
"</form></body></html>"))
return
} else if r.Method == "POST" {
usr := r.FormValue("usr")
pwd := r.FormValue("pwd")
_, err := C1Login(c, usr, pwd)
if err == C1AuthError {
http.Error(w, err.String(), http.StatusUnauthorized)
return
}
http.Redirect(w, r, "/index", http.StatusFound)
/// http.Redirect(w, r, "/", http.StatusFound)
}
}
func handleVerify(conn http.ResponseWriter, req *http.Request) {
if !(req.Method == "POST" && req.URL.Path == "/camli/sig/verify") {
httputil.BadRequestError(conn, "Inconfigured handler.")
return
}
req.ParseForm()
sjson := req.FormValue("sjson")
if sjson == "" {
httputil.BadRequestError(conn, "Missing sjson parameter.")
return
}
m := make(map[string]interface{})
vreq := jsonsign.NewVerificationRequest(sjson, pubKeyFetcher)
if vreq.Verify() {
m["signatureValid"] = 1
m["verifiedData"] = vreq.PayloadMap
} else {
errStr := vreq.Err.String()
m["signatureValid"] = 0
m["errorMessage"] = errStr
}
conn.WriteHeader(http.StatusOK) // no HTTP response code fun, error info in JSON
httputil.ReturnJson(conn, m)
}
func saveHandler(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[lenPath:]
body := r.FormValue("body")
p := &Page{Title: title, Body: []byte(body)}
p.save()
http.Redirect(w, r, "/view/"+title, http.StatusFound)
}
func (h *JSONSignHandler) handleVerify(rw http.ResponseWriter, req *http.Request) {
req.ParseForm()
sjson := req.FormValue("sjson")
if sjson == "" {
http.Error(rw, "missing \"sjson\" parameter", http.StatusBadRequest)
return
}
m := make(map[string]interface{})
// TODO: use a different fetcher here that checks memory, disk,
// the internet, etc.
fetcher := h.pubKeyFetcher
vreq := jsonsign.NewVerificationRequest(sjson, fetcher)
if vreq.Verify() {
m["signatureValid"] = 1
m["signerKeyId"] = vreq.SignerKeyId
m["verifiedData"] = vreq.PayloadMap
} else {
errStr := vreq.Err.String()
m["signatureValid"] = 0
m["errorMessage"] = errStr
}
rw.WriteHeader(http.StatusOK) // no HTTP response code fun, error info in JSON
httputil.ReturnJson(rw, m)
}
func (authData *validatorImpl) LoginHandler(w http.ResponseWriter, r *http.Request) {
client := r.FormValue("client")
token := r.FormValue("token")
if client == "" || token == "" {
w.Write([]byte(loginHtml))
return
}
existingToken, found := authData.tokenMap[client]
if !found {
http.Error(w, "Invalid auth token", http.StatusForbidden)
return
}
if token != existingToken {
log.Printf("Invalid token: %s != %s", token, existingToken)
http.Error(w, "Invalid auth token", http.StatusForbidden)
return
}
// Set cookies.
clientCookie := &http.Cookie{Name: "client", Value: client, Secure: true}
http.SetCookie(w, clientCookie)
tokenCookie := &http.Cookie{Name: "token", Value: token, Secure: true}
http.SetCookie(w, tokenCookie)
w.Write([]byte("Login successful"))
}
func postPosition(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
gid, _ := strconv.Atoi(r.FormValue("gid"))
pid, _ := strconv.Atoi(r.FormValue("pid"))
lat, _ := strconv.Atoi(r.FormValue("lat"))
lng, _ := strconv.Atoi(r.FormValue("lng"))
now := datastore.SecondsToTime(time.Seconds())
go savePlayer(c, &Player{pid, gid, lat, lng, now})
q := datastore.NewQuery("Player").
Filter("GameId =", gid)
players := make([]Player, 0, 10)
for t := q.Run(c); ; {
var p Player
_, err := t.Next(&p)
if err == datastore.Done {
break
}
if err != nil {
serveError(c, w, err)
return
}
if p.PlayerId != pid {
players = append(players, p)
}
}
m := map[string]interface{}{"players": players, "dead": false}
enc := json.NewEncoder(w)
enc.Encode(m)
}
func signInTwitterHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
id := r.FormValue("id")
if id == "" {
serveError(c, w, os.NewError("Missing ID parameter"))
return
}
conf := &tweetlib.Config{
ConsumerKey: appConfig.TwitterConsumerKey,
ConsumerSecret: appConfig.TwitterConsumerSecret,
Callback: "http://" + appConfig.AppHost + "/twitter?action=temp&id=" + id}
tok := &tweetlib.Token{}
tr := &tweetlib.Transport{Config: conf,
Token: tok,
Transport: &urlfetch.Transport{Context: c}}
tt, err := tr.TempToken()
if err != nil {
c := appengine.NewContext(r)
serveError(c, w, err)
c.Errorf("%v", err)
return
}
item := &memcache.Item{
Key: tt.Token,
Value: []byte(tt.Secret),
}
// Add the item to the memcache, if the key does not already exist
memcache.Add(c, item)
http.Redirect(w, r, tt.AuthURL(), http.StatusFound)
}
func (ui *UIHandler) serveDiscovery(rw http.ResponseWriter, req *http.Request) {
rw.Header().Set("Content-Type", "text/javascript")
inCb := false
if cb := req.FormValue("cb"); identPattern.MatchString(cb) {
fmt.Fprintf(rw, "%s(", cb)
inCb = true
}
pubRoots := map[string]interface{}{}
for key, pubh := range ui.PublishRoots {
pubRoots[key] = map[string]interface{}{
"name": pubh.RootName,
// TODO: include gpg key id
}
}
bytes, _ := json.Marshal(map[string]interface{}{
"blobRoot": ui.BlobRoot,
"searchRoot": ui.SearchRoot,
"jsonSignRoot": ui.JSONSignRoot,
"uploadHelper": "?camli.mode=uploadhelper", // hack; remove with better javascript
"downloadHelper": "./download/",
"publishRoots": pubRoots,
})
rw.Write(bytes)
if inCb {
rw.Write([]byte{')'})
}
}
/* Check the uniqueness of a Uid.
*
* FIXME: RESTify this!
*/
func CheckUidHandler(w http.ResponseWriter, r *http.Request) {
log.Println("CheckUidHandler got request with method: " + r.Method)
if r.Method == "POST" {
context := appengine.NewContext(r)
isUnique := controller.IsUidUnique(context, r.FormValue("uid"))
encoder := json.NewEncoder(w)
type UidResponse struct {
Uid string
Available string
}
response := new(UidResponse)
response.Uid = r.FormValue("uid")
log.Println("Result from IsUidUnique is: " + strconv.Btoa(isUnique) + " : " + reflect.TypeOf(isUnique).String())
if isUnique {
log.Println("Username " + response.Uid + " is available")
response.Available = "available"
} else {
log.Println("Username " + response.Uid + " is not available")
response.Available = "not available"
}
log_, _ := json.Marshal(&response)
log.Println("Sending to JQuery: " + string(log_))
if err := encoder.Encode(&response); err != nil {
log.Println("Cannot send JSON to AJAX code: " + err.String())
}
}
return
}
// hello world, the web server
func PageExecuteJS(w http.ResponseWriter, req *http.Request) {
url := req.FormValue("url")
js := req.FormValue("js")
header := w.Header()
if url == "" {
log.Printf("ERROR: url is required. (%s)\n", url)
w.WriteHeader(http.StatusInternalServerError)
header.Set("Content-Type", "text/plian;charset=UTF-8;")
io.WriteString(w, "Internal Server Error: please input url.\n")
return
}
if strings.Index(url, "http") != 0 {
log.Printf("ERROR: url is invalid. (%s)\n", url)
w.WriteHeader(http.StatusInternalServerError)
header.Set("Content-Type", "text/plian;charset=UTF-8;")
io.WriteString(w, "Internal Server Error: please input valid url.\n")
return
}
if js == "" {
log.Printf("ERROR: js is required. (%s)\n", url)
w.WriteHeader(http.StatusInternalServerError)
header.Set("Content-Type", "text/plian;charset=UTF-8;")
io.WriteString(w, "Internal Server Error: please input js.\n")
return
}
json := ExecuteJS(url, js)
if len(json) == 0 {
log.Printf("ERROR: failed to execute. (%s)\n", url)
json = []byte("{}")
}
header.Set("Content-Type", "application/json;charset=UTF-8;")
w.Write(json)
}
func (h *JSONSignHandler) handleSign(rw http.ResponseWriter, req *http.Request) {
req.ParseForm()
badReq := func(s string) {
http.Error(rw, s, http.StatusBadRequest)
log.Printf("bad request: %s", s)
return
}
// TODO: SECURITY: auth
jsonStr := req.FormValue("json")
if jsonStr == "" {
badReq("missing \"json\" parameter")
return
}
if len(jsonStr) > kMaxJsonLength {
badReq("parameter \"json\" too large")
return
}
sreq := &jsonsign.SignRequest{
UnsignedJson: jsonStr,
Fetcher: h.pubKeyFetcher,
ServerMode: true,
SecretKeyringPath: h.secretRing,
}
signedJson, err := sreq.Sign()
if err != nil {
// TODO: some aren't really a "bad request"
badReq(fmt.Sprintf("%v", err))
return
}
rw.Write([]byte(signedJson))
}
func PageInternalUpdateJson(w http.ResponseWriter, req *http.Request) {
id := req.FormValue("id")
updateJson := req.FormValue("json")
header := w.Header()
conn, err := GetConnection()
c := GetExecuteCollection(conn)
var (
rs ExecuteRs
jsonb []byte
)
execId, err := mongo.NewObjectIdHex(id)
log.Printf("Search ExecuteId=%s", execId)
err = c.Find(map[string]interface{}{"_id": execId}).One(&rs)
if err != nil {
jsonb = []byte(`{error: "Not found."}`)
} else {
rs.Json = updateJson
err = c.Update(mongo.M{"_id": execId}, rs)
if err != nil {
jsonb = []byte(`{result: "failed"}`)
} else {
jsonb = []byte(`{result: "success"}`)
}
}
conn.Close()
header.Set("Access-Control-Allow-Origin", "*")
header.Set("Content-Type", "application/json")
w.Write(jsonb)
}
func addWidget(w http.ResponseWriter, r *http.Request) {
var err os.Error
if fixup == nil {
fixup, err = regexp.Compile(`[^A-Za-z0-9\-_. ]`)
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
}
ctx := appengine.NewContext(r)
name := fixup.ReplaceAllString(r.FormValue("name"), "")
if len(name) == 0 {
http.Error(w, "Invalid/no name provided", http.StatusInternalServerError)
return
}
widget := NewWidget(ctx, name)
err = widget.Commit()
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
http.Redirect(w, r, "/widget/list", http.StatusFound)
}
func AppEngineVerify(r *http.Request) string {
if err := r.ParseForm(); err != nil {
return "Anonymous"
}
token := r.FormValue("assertion")
url := "https://browserid.org/verify"
bodytype := "application/x-www-form-urlencoded"
body := strings.NewReader("assertion=" + token + "&audience=" + r.Host)
var response_body []byte
c := appengine.NewContext(r)
client := urlfetch.Client(c)
res, err := client.Post(url, bodytype, body)
if err != nil {
fmt.Println("err=", err)
return "Anonymous"
} else {
response_body, _ = ioutil.ReadAll(res.Body)
res.Body.Close()
}
var f interface{}
json.Unmarshal(response_body, &f)
m := f.(map[string]interface{})
return fmt.Sprintf("%s", m["email"])
}
func myWidgets(w http.ResponseWriter, r *http.Request) {
var err os.Error
ctx := appengine.NewContext(r)
page, err := template.Parse(myWidgetTemplate, nil)
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
data := myWidgetData{
CSS: commonCSS(),
Header: header(ctx),
}
data.Widget, err = LoadWidgets(ctx)
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
if len(r.FormValue("ids_only")) > 0 {
w.Header().Set("Content-Type", "text/plain")
for _, widget := range data.Widget {
fmt.Fprintln(w, widget.ID)
}
return
}
page.Execute(w, data)
}
// articlesIndex is the handler for the site's index page.
// It shows up to the last 10 article summaries (all public info except
// for the Body) on a single page.
func articlesIndex(w http.ResponseWriter, r *http.Request) {
// Get the user-entered offset, or default to a zero offset.
offsetS := r.FormValue("Page")
var offset int
if len(offsetS) > 0 {
offset64, err := strconv.Btoi64(offsetS, 10)
check(err)
offset = int(offset64)
} else {
offset = 0
}
// Fetch public data from datastore, up to 10, with offset `offset * 10`
c := appengine.NewContext(r)
q := datastore.NewQuery("Article").Order("-Date").Filter("Public =", true).Limit(10).Offset(10 * offset)
a := make([]Article, 0, 10)
_, err := q.GetAll(c, &a)
check(err)
// Prepares the `indexTemplate.html` template
t := template.New("index")
t, err = t.ParseFile("templates/indexTemplate.html")
check(err)
// Executes the template, providing the data gathered from the datastore
err = t.Execute(w, a)
check(err)
}
func loginView(req *http.Request, s *session) interface{} {
rurl := req.FormValue("back")
if rurl == "" {
rurl = "/"
}
if req.FormValue("username") != "" && req.FormValue("password") != "" {
user := study.GetUser(req.FormValue("username"))
if user != nil && user.CheckPass(req.FormValue("password")) {
s.User = user
s.Admin = false
if user.GetAttr("admin") == study.DBTRUE {
if _, ok := config.Conf.AdminUsers[user.Username]; ok {
s.Admin = true
} else {
user.SetAttr("admin", study.DBFALSE)
}
}
return redirectResponse(rurl)
}
return giveTplData{
"ReturnTo": rurl,
"Error": messages["BadUserOrPass"],
}
}
return giveTplData{
"ReturnTo": rurl,
}
}
func put(w http.ResponseWriter, r *http.Request) {
keyName := r.FormValue("key")
value := r.FormValue("val")
c := appengine.NewContext(r)
key := datastore.NewKey("Entity", keyName, 0, nil)
entity := new(Entity)
entity.Value = value
result := map[string]string{
"error": "",
}
if _, err := datastore.Put(c, key, entity); err != nil {
result["error"] = fmt.Sprintf("%s", err)
}
// Set the value to speed up future reads - errors here aren't
// that bad, so don't worry about them
item := &memcache.Item{
Key: keyName,
Value: []byte(value),
}
memcache.Set(c, item)
bumpGeneration(c)
fmt.Fprintf(w, "%s", mapToJson(result))
}
func handleLogout(w http.ResponseWriter, r *http.Request) {
c = appengine.NewContext(r)
returnURL := "/"
// parse form
err := r.ParseForm()
if err != nil {
serveError(c, w, err)
return
}
if r.FormValue("continue") != "" {
returnURL = r.FormValue("continue")
}
if useOpenID {
// adjust returnURL to bring us back to a local user login form
laterReturnUrl := returnURL
returnURL = "/Login/?chooseLogin=1&continue=" + http.URLEscape(laterReturnUrl)
}
// redirect to google logout (for OpenID as well, or else we won't be locally logged out)
lourl, err := user.LogoutURL(c, returnURL)
if err != nil {
c.Errorf("handleLogout: error getting LogoutURL")
}
c.Debugf("handleLogout: redirecting to logoutURL=%v", lourl)
http.Redirect(w, r, lourl, http.StatusFound)
return
}
func handle(w http.ResponseWriter, r *http.Request) {
// If root, show the link registration page.
if r.URL.Path == "/" {
switch r.Method {
case "GET":
w.Write([]byte(registration))
case "POST":
// Get input
key := r.FormValue("key")
url := r.FormValue("url")
// Write to db
resp := make(chan bool)
save <- SaveRequest{key, url, resp}
_ = <-resp
w.Write([]byte("ok"))
}
return
}
// Redirect user based on the path.
resp := make(chan string)
code := r.URL.Path[1:]
lookup <- LookupRequest{code, resp}
url := <-resp
if url == "" {
http.Error(w, "Key not found", http.StatusNotFound)
return
}
http.Redirect(w, r, <-resp, http.StatusFound)
}
func authCallback(w http.ResponseWriter, r *http.Request, oldSession *Session) {
// We cheat here -- font-end has direct access to the oauth data
code := r.FormValue("code")
context := appengine.NewContext(r)
var userKey datastore.Key
_, err := memcache.Gob.Get(context, "oauth-code-"+code, &userKey)
if err != nil {
w.Write([]byte("Invalid code"))
} else {
/*
auth := model.NewOAuth2(&userKey)
if _, err = datastore.Put(context, datastore.NewIncompleteKey(context, "Authentication", nil), auth); err != nil {
context.Errorf("Error saving: %v", err)
w.Write([]byte("Error saving: " + err.String()))
return
}
// replace session cookie
oldKey := datastore.NewKey(context, "Session", oldSession.Key, 0, nil)
datastore.Delete(context, oldKey)
session := NewSession(context)
oldSession.Key = session.Key
oldSession.Token = auth.Token
oldSession.SetCookie(w, context)
// redirect
*/
}
}
// tileHandler implements a tile renderer for use with the Google Maps JavaScript API.
// See http://code.google.com/apis/maps/documentation/javascript/maptypes.html#ImageMapTypes
func tileHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
x, _ := strconv.Atoi(r.FormValue("x"))
y, _ := strconv.Atoi(r.FormValue("y"))
z, _ := strconv.Atoi(r.FormValue("z"))
w.Header().Set("Content-Type", "image/png")
// Try memcache first.
key := fmt.Sprintf("mandelbrot:%d/%d/%d", x, y, z)
if z < maxMemcacheLevel {
if item, err := memcache.Get(c, key); err == nil {
w.Write(item.Value)
return
}
}
b := render(x, y, z)
if z < maxMemcacheLevel {
memcache.Set(c, &memcache.Item{
Key: key,
Value: b,
Expiration: 3600, // TTL = 1 hour
})
}
w.Header().Set("Content-Length", strconv.Itoa(len(b)))
w.Write(b)
}
func RenderTiles(w http.ResponseWriter, req *http.Request) {
e := os.Remove("svg/test-surface.svg")
if e != nil {
os.Stderr.WriteString(e.String() + "\n")
}
if CurrentTiling == nil {
EmptySvg(w, req)
return
}
style := req.FormValue("style")
image := cairo.NewSurface("svg/test-surface.svg", 72*4, 72*4)
image.SetSourceRGB(0., 0., 0.)
image.SetLineWidth(.1)
image.Translate(72*2., 72*2.)
image.Scale(4., 4.)
if style == "edges" {
image.SetSourceRGBA(0., 0., 0., 1.)
CurrentTiling.DrawEdges(image)
} else if style == "plain" {
CurrentTiling.ColourFaces(image, zellij.OrangeBlueBrush)
} else {
CurrentTiling.ColourDebugFaces(image)
CurrentTiling.DrawDebugEdges(image)
}
image.Finish()
http.ServeFile(w, req, "svg/test-surface.svg")
}
func view(w http.ResponseWriter, r *http.Request) {
id, _ := strconv.Atoi(r.FormValue("id"))
c := appengine.NewContext(r)
var view detail_view
// グループ情報を取得
if group, err := model.GetGroup(c, id); err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
} else {
view.Group = group
}
// メンバー情報を取得
if memberlist, err := model.MemberList(c, id); err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
} else {
view.Member = memberlist
}
// 詳細画面を表示
if err := detailTemplate.Execute(w, view); err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
}
}
func accept_event(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
event, key, err_string := find_single_event(c, r.FormValue("sender"),
r.FormValue("date"))
if len(err_string) > 0 {
fmt.Fprintf(w, err_string)
return
}
if event.OwnerDate > 0 {
fmt.Fprintf(w, "This message is already owned by %s.", event.Owner)
return
}
event.OwnerDate = datastore.SecondsToTime(time.Seconds())
event.Owner = "Someone"
_, err := datastore.Put(c, key, &event)
if err != nil {
fmt.Fprintf(w, err.String())
return
} else {
target_url := fmt.Sprintf("/show?sender=%s&date=%d", event.Sender,
event.RecieptDate)
http.Redirect(w, r, target_url, http.StatusFound)
}
}