func consolePageHandler(sdb *db.StationDB, contactdb *db.ContactDB,
mux *rpc.Client,
w http.ResponseWriter, r *http.Request, user userView) {
id := r.URL.Query().Get("id")
if id == "" {
http.Error(w, "'id' param missing", http.StatusBadRequest)
return
}
station, err := sdb.Lookup(id)
if err != nil {
log.Printf("Error looking up station: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
auth, _ := canOperateStation(sdb, id, user.Id)
if !auth {
http.Error(w, "Not authorized", http.StatusUnauthorized)
return
}
var cv consoleViewContext
cv.S = *station
cv.Satellites = fillSatOptions()
c := NewRenderContext(user, cv)
err = consoleTemplate.Get().ExecuteTemplate(
w, "station_console.html", c)
if err != nil {
log.Printf("Error rendering station console: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func RestoreStationsTable(input *db.RecordReader, output *db.StationDB) error {
for {
rec, err := input.ReadRecord()
if err == io.EOF {
break
} else if err != nil {
log.Printf("Error reading record: %s", err.Error())
return err
}
s := &pb.Station{}
err = proto.Unmarshal(rec, s)
if err != nil {
log.Printf("Error parsing record: %s", err.Error())
return err
}
err = output.Store(s)
if err != nil {
log.Printf("Error writing record: %s", err.Error())
return err
}
fmt.Printf(".")
}
fmt.Printf("\n")
log.Printf("Stations table restored.")
return nil
}
func deleteStationHandler(sdb *db.StationDB,
w http.ResponseWriter, r *http.Request, user userView) {
id := r.URL.Query().Get("id")
if id == "" {
http.Error(w, "'id' param missing", http.StatusBadRequest)
return
}
s, err := sdb.Lookup(id)
if err != nil {
log.Printf("Station DB lookup error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
if s == nil || *s.Userid != user.Id {
http.NotFound(w, r)
return
}
err = sdb.Delete(id)
if err != nil {
log.Printf("Station DB delete error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
// Success
http.Redirect(w, r, "/home", http.StatusFound)
}
func homeHandler(stationdb *db.StationDB, m *rpc.Client,
w http.ResponseWriter, r *http.Request, user userView) {
log.Printf("userid: %s", user.Id)
hc := homeContext{}
n, err := stationdb.NumStations()
if err != nil {
n = -1
}
hc.NumStations = n
hc.Stations, err = stationdb.UserStations(user.Id)
if err != nil {
log.Printf("Error getting user stations: %s", err.Error())
// Continue rendering since it's not a critial error.
}
var args mux.StationCountArgs
var count mux.StationCountResult
err = m.Call("Coordinator.StationCount", args, &count)
if err != nil {
count.Count = -1
}
hc.NumOnlineStations = count.Count
c := NewRenderContext(user, hc)
err = homeTemplate.Get().ExecuteTemplate(w, "home.html", c)
if err != nil {
log.Printf("Error rendering home page: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func stationViewHandler(sdb *db.StationDB, m *rpc.Client, userdb *db.UserDB,
contactdb *db.ContactDB,
w http.ResponseWriter, r *http.Request, user userView) {
id := r.URL.Query().Get("id")
if id == "" {
http.Error(w, "'id' param missing", http.StatusBadRequest)
return
}
s, err := sdb.Lookup(id)
if err != nil {
log.Printf("Sation DB lookup error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
if s == nil {
http.NotFound(w, r)
return
}
if s.Capabilities == nil {
s.Capabilities = &pb.Capabilities{}
}
sc := GetStationContext(s, user.Id, m, userdb, contactdb)
c := NewRenderContext(user, sc)
err = stationViewTemplate.Get().ExecuteTemplate(w, "station.html", c)
if err != nil {
log.Printf("Error rendering station view: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func editStationHandler(sdb *db.StationDB,
w http.ResponseWriter, r *http.Request, user userView) {
log.Printf("method: %s", r.Method)
id := r.URL.Query().Get("id")
if id == "" {
http.Error(w, "'id' param missing", http.StatusBadRequest)
return
}
s, err := sdb.Lookup(id)
if err != nil {
log.Printf("Station DB lookup error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
if s == nil || *s.Userid != user.Id {
http.NotFound(w, r)
return
}
if s.Capabilities == nil {
s.Capabilities = &pb.Capabilities{}
}
if r.Method == "POST" {
editStationPOST(sdb, s, w, r, user)
} else {
editStationGET(s, w, r, user)
}
}
func canOperateStation(sdb *db.StationDB, station_id, userid string) (
bool, error) {
owner, err := sdb.GetStationUserId(station_id)
if err != nil {
log.Printf("Error looking up station: %s", err.Error())
return false, err
}
return owner == userid, nil
}
func AuthenticateStation(sdb *db.StationDB, id, secret string) (bool, error) {
s, err := sdb.Lookup(id)
if err != nil {
return false, err
}
if s == nil {
return false, nil
}
return *s.Id == id && *s.Secret == secret, nil
}
func renderUserProfile(
cdb *db.ContactDB, stationdb *db.StationDB,
w http.ResponseWriter, r *http.Request, user userView, u *pb.User) {
// TODO: It would be better if we could restrict to contacts which
// have telemetry.
contacts, err := cdb.SearchByUserId(*u.Id, 100)
if err != nil {
log.Printf("cdb.SearchByUserId error: %s", err.Error())
// Continue since this isn't a critical error.
}
heard_satellite_ids := make(map[string]bool)
for _, c := range contacts {
if c.SatelliteId == nil {
continue
}
for _, b := range c.Blob {
if b.Format != nil &&
*b.Format == pb.Contact_Blob_DATUM {
heard_satellite_ids[*c.SatelliteId] = true
break
}
}
}
var pv profileView
pv.User = u
pv.IsOwner = (*u.Id == user.Id)
pv.HeardSatellites = make([]*pb.Satellite, 0)
for satellite_id, _ := range heard_satellite_ids {
pv.HeardSatellites = append(pv.HeardSatellites,
db.GlobalSatelliteDB().Map[satellite_id])
}
stations, err := stationdb.UserStations(*u.Id)
if err != nil {
log.Printf("Error getting user stations: %s", err.Error())
// Continue rendering since it's not a critial error.
}
pv.Stations = make([]*pb.Station, 0)
for _, s := range stations {
if s.Lat != nil && s.Lng != nil {
pv.Stations = append(pv.Stations, s)
}
}
c := NewRenderContext(user, pv)
err = userViewTemplate.Get().ExecuteTemplate(w, "user.html", c)
if err != nil {
log.Printf("Error rendering user view: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func stationKMLHandler(sdb *db.StationDB,
w http.ResponseWriter, r *http.Request) {
stations, err := sdb.AllStations()
if err != nil {
log.Printf("Station DB AllStations error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
err = kmlTemplate.ExecuteTemplate(w, "stations.kml", stations)
if err != nil {
log.Printf("Error rendering station kml map: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func stationContactsHandler(
cdb *db.ContactDB, sdb *db.StationDB,
w http.ResponseWriter, r *http.Request, user userView) {
id := r.URL.Query().Get("id")
if id == "" {
http.Error(w, "'id' param missing", http.StatusBadRequest)
return
}
s, err := sdb.Lookup(id)
if err != nil {
log.Printf("Sation DB lookup error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
if s == nil {
http.NotFound(w, r)
return
}
if s.Userid == nil || user.Id != *s.Userid {
http.Error(w, "Unauthorized", http.StatusUnauthorized)
return
}
contacts, err := cdb.SearchByStationId(id, 100)
if err != nil {
log.Printf("SearchByStationId error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
var cv contactsView
cv.Title = *s.Name
cv.C = contacts
c := NewRenderContext(user, cv)
err = contactsTemplate.Get().ExecuteTemplate(w, "contacts.html", c)
if err != nil {
log.Printf("Error rendering contacts view: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func addStationHandler(sdb *db.StationDB,
w http.ResponseWriter, r *http.Request, user userView) {
station, err := db.NewStation(user.Id)
if err != nil {
log.Printf("Station DB NewStation error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
if err = sdb.Store(station); err != nil {
log.Printf("Station DB Store error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
redirect := stationUrl("/station/edit", *station.Id)
http.Redirect(w, r, redirect, http.StatusFound)
}
// satellite_id can be empty if unknown
func StartNewConsoleContact(stationdb *db.StationDB, contactdb *db.ContactDB,
station_id, user_id, satellite_id string) (
id string, err error) {
station, err := stationdb.Lookup(station_id)
if err != nil {
return "", err
}
if station == nil {
return "", errors.New(
fmt.Sprintf("Unknown station: %s", station_id))
}
s, err := NewContact(station, user_id, &satellite_id)
if err != nil {
return "", err
}
if err = contactdb.Store(s); err != nil {
return "", err
}
return *s.Id, nil
}
func postPacketHandler(
sdb *db.StationDB, cdb *db.ContactDB,
w http.ResponseWriter, r *http.Request) {
data, err := ioutil.ReadAll(r.Body)
r.Body.Close()
if err != nil {
log.Printf("postPacketHandler: Error reading post body: %s",
err.Error())
http.Error(w, "Error reading post body",
http.StatusInternalServerError)
return
}
var req PostPacketRequest
if err := json.Unmarshal(data, &req); err != nil {
log.Printf("postPacketHandler: JSON decode error: %s",
err.Error())
http.Error(w, "Error decoding JSON data.",
http.StatusBadRequest)
return
}
log.Printf("request: %v", req)
frame, err := base64.StdEncoding.DecodeString(req.FrameBase64)
if err != nil {
log.Printf("postPacketHandler: base64 decode error: %s",
err.Error())
http.Error(w, "Error decoding base64 frame.",
http.StatusBadRequest)
return
}
if req.StationId == "" {
http.Error(w, "Missing station_id", http.StatusBadRequest)
return
}
station, err := sdb.Lookup(req.StationId)
if err != nil {
log.Printf("Error looking up station: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
contact, poperr := contacts.PopulateContact(
req.SatelliteId,
req.Timestamp,
req.Format,
frame,
"",
req.StationSecret,
station)
if poperr != nil {
poperr.HttpError(w)
return
}
log.Printf("Storing contact: %s", contact)
err = cdb.Store(contact)
if err != nil {
log.Printf("Error storing contact: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
// Do we need to set content-length?
}
func getLatestIQDataHandler(
sdb *db.StationDB, cdb *db.ContactDB,
w http.ResponseWriter, r *http.Request) {
log.Printf("Request: %s", r.URL.String())
req, err := parseGetLatestIQDataRequest(r.URL.Query())
if err != nil {
log.Printf("getLatestIQDataHandler: "+
"parse request error: %s", err.Error())
http.Error(w, "Error parsing request.",
http.StatusBadRequest)
return
}
sat := db.GlobalSatelliteDB().Map[req.SatelliteId]
if sat == nil {
http.Error(w, "Unknown satellite_id.", http.StatusBadRequest)
return
}
station, err := sdb.Lookup(req.StationId)
if err != nil {
log.Printf("Error looking up station: %s", err.Error())
http.Error(w, "", http.StatusUnauthorized)
return
}
if station == nil {
log.Printf("Error looking up station.")
http.Error(w, "", http.StatusUnauthorized)
return
}
// Authenticate the station.
if station.Secret == nil || *station.Secret != req.StationSecret {
log.Printf("Authentication failed.")
http.Error(w, "", http.StatusUnauthorized)
return
}
// Make sure that the user is authorized for the satellite.
found_good_id := false
for _, station_id := range sat.AuthorizedStationId {
if station_id == *station.Id {
found_good_id = true
}
}
if !found_good_id {
log.Printf("Authentication failed.")
http.Error(w, "", http.StatusUnauthorized)
return
}
contacts, err := cdb.SearchBySatelliteId(req.SatelliteId, req.Limit)
if err != nil {
log.Printf("getLatestIQDataHandler: "+
"SearchBySatelliteId error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
packets := make(GetLatestIQDataResponse, 0)
for _, c := range contacts {
if c.StartTimestamp == nil {
continue
}
timestamp := *c.StartTimestamp
for _, b := range c.Blob {
if len(packets) >= req.Limit {
continue
}
if b.Format == nil ||
*b.Format != pb.Contact_Blob_IQ {
continue
}
var p IQLink
p.Timestamp = timestamp
p.URL = scheduler.GetStreamURL(*c.Id)
if b.IqParams != nil {
if b.IqParams.Type != nil {
p.Type = b.IqParams.Type.String()
}
if b.IqParams.SampleRate != nil {
p.SampleRate = int(
*b.IqParams.SampleRate)
}
}
packets = append(packets, p)
}
}
json_body, err := json.Marshal(packets)
if err != nil {
log.Printf("json Marshal error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
}
w.Header().Add("Content-Length", fmt.Sprintf("%d", len(json_body)))
w.Header().Add("Content-Type", "application/json")
_, err = w.Write(json_body)
if err != nil {
log.Printf("Error writing response: %s", err.Error())
}
}
// blocking
// FIXME: handle disconnections
func scheduleStation(stationdb *db.StationDB,
contactdb *db.ContactDB,
mux_client *rpc.Client,
station_id string,
shutdown_chan chan string) {
defer func() { shutdown_chan <- station_id }()
log_label := station_id
log.Printf("%s: Scheduling starting.", log_label)
for {
// Lookup the station in the loop since the owner might
// edit the parameters.
station, err := stationdb.Lookup(station_id)
if err != nil {
log.Printf("%s: Station lookup error: %s",
log_label, err.Error())
continue
}
if station == nil {
log.Printf("%s: Station doesn't exist.", log_label)
return
}
next_pass, err := getNextPass(station)
if err != nil {
log.Printf("%s: Error getting pass predictions: %s",
log_label, err.Error())
}
var delay time.Duration
if next_pass.Satellite == nil {
// No passes coming up soon. Just wait a bit and try
// again.
log.Printf("%s: no upcoming passes", log_label)
delay = maxPredictionDuration
} else if station.SchedulerEnabled == nil ||
*station.SchedulerEnabled == false {
//log.Printf("%s: scheduler disabled", station_id)
// TODO: We are effectively polling the SchedulerEnabled
// bit. We really should instead have the frontend
// send a notification to reschedule the station.
delay = controlDisabledDuration
} else {
log.Printf("%s: next pass: %s",
log_label, *next_pass.Satellite.Id)
delay = timestamp.TimestampFloatToTime(
next_pass.StartTimestamp).Sub(time.Now())
}
log.Printf("%s: waiting for %s", log_label, delay)
// wait {timer, disconnect}
// FIXME: handle disconnections during the sleep
time.Sleep(delay)
if next_pass.Satellite == nil {
continue
}
// Check that station has enabled scheduling.
// We have to look up the station again since it might have
// changed while we were sleeping.
station, err = stationdb.Lookup(station_id)
if err != nil {
log.Printf("%s: Station lookup error: %s",
log_label, err.Error())
continue
}
if station == nil {
log.Printf("%s: Station doesn't exist.", log_label)
return
}
if station.SchedulerEnabled == nil ||
*station.SchedulerEnabled == false {
continue
}
err = capturePass(contactdb, mux_client, *station, next_pass)
if err != nil {
// There was an error of some sort.
// Wait a bit before trying again.
time.Sleep(errorWaitDuration)
}
}
}
func satellitePostContactHandler(
sdb *db.StationDB, cdb *db.ContactDB,
w http.ResponseWriter, r *http.Request,
user userView) {
if r.Method != "POST" {
http.Redirect(w, r, satelliteListUrl, http.StatusFound)
return
}
if err := r.ParseForm(); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
log.Printf("satellitePostContactHandler form: %v\n\n", r.Form)
satellite_id := r.Form.Get("satellite_id")
if satellite_id == "" {
http.Error(w, "Missing satellite id", http.StatusBadRequest)
return
}
sat := db.GlobalSatelliteDB().Map[satellite_id]
if sat == nil {
http.Error(w, "Unknown satellite id", http.StatusBadRequest)
return
}
timestamp, err := strconv.ParseInt(r.Form.Get("timestamp"), 10, 64)
if err != nil {
http.Error(w, "Can't parse timestamp.", http.StatusBadRequest)
return
}
data := r.Form.Get("data")
frame := ([]byte)(data)
var station *pb.Station
// There are two options: logged-in or anonymous.
if user.Id == "" {
// Anonymous
station = nil
} else {
// Logged-in user
station_id := r.Form.Get("station_id")
if station_id == "" {
http.Error(
w, "Missing station id", http.StatusBadRequest)
return
}
station, err = sdb.Lookup(station_id)
if err != nil {
log.Printf("Error looking up station: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
contact, poperr := contacts.PopulateContact(
satellite_id,
timestamp,
"FREEFORM",
frame,
user.Id,
"",
station)
if poperr != nil {
poperr.HttpError(w)
return
}
log.Printf("Contact: %s", contact)
err = cdb.Store(contact)
if err != nil {
log.Printf("Error storing contact: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
var cc contactConfirmContext
cc.SatelliteUrl = satelliteViewURL(*sat.Id)
cc.SatelliteName = RenderSatelliteName(sat.Name)
cc.Data = data
if sat.Schema != nil {
t := make([]pb.TelemetryDatum, 0)
for _, b := range contact.Blob {
if b.Format != nil &&
*b.Format == pb.Contact_Blob_DATUM {
t = append(t, *b.Datum)
}
}
cc.Telemetry = fe_telemetry.RenderTelemetry(
*sat.Schema, t, "en")
}
err = contactConfirmTemplate.Get().ExecuteTemplate(
w, "contact_confirm.html", NewRenderContext(user, cc))
if err != nil {
log.Printf(
"Error rendering contact_confirm view: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func satelliteViewHandler(
cdb *db.ContactDB, userdb *db.UserDB, stationdb *db.StationDB,
commentdb *db.CommentDB,
w http.ResponseWriter, r *http.Request, user userView) {
if len(r.URL.Path) < len(satelliteURLPrefix) {
http.Error(w, "Invalid path", http.StatusBadRequest)
return
}
id := r.URL.Path[len(satelliteURLPrefix):]
sat := db.GlobalSatelliteDB().Map[id]
if sat == nil {
http.NotFound(w, r)
return
}
// TODO: It would be better if we could restrict to contacts which
// have telemetry.
contacts, err := cdb.SearchBySatelliteId(id, 100)
if err != nil {
log.Printf("cdb.SearchBySatelliteId error: %s", err.Error())
// Continue since this isn't a critical error.
}
t := make([]pb.TelemetryDatum, 0)
var latest_contact *contactView
for _, c := range contacts {
for _, b := range c.Blob {
if b.Format != nil &&
*b.Format == pb.Contact_Blob_DATUM {
t = append(t, *b.Datum)
if latest_contact == nil {
latest_contact = fillContactView(
*c, userdb)
}
}
}
}
sv := satelliteViewContext{}
sv.S = sat
if sat.Schema != nil {
t := fe_telemetry.RenderTelemetry(*sat.Schema, t, "en")
if len(t) > 0 {
sv.TelemetryHead = t[0]
}
if len(t) > 1 {
sv.TelemetryTail = t[1:]
}
}
sv.LatestContact = latest_contact
sv.Comments, _ = LoadCommentsByObjectId(
satelliteObjectId(id), commentdb, userdb)
sv.Stations, err = stationdb.UserStations(user.Id)
if err != nil {
log.Printf("Error getting user stations: %s", err.Error())
// Continue rendering since it's not a critial error.
}
c := NewRenderContext(user, &sv)
err = satelliteViewTemplate.Get().ExecuteTemplate(
w, "satellite.html", c)
if err != nil {
log.Printf("Error rendering satellite view: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
}
func editStationPOST(sdb *db.StationDB, s *pb.Station,
w http.ResponseWriter, r *http.Request, user userView) {
if err := r.ParseForm(); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
log.Print(r.Form)
s.Name = proto.String(r.Form.Get("name"))
s.Notes = proto.String(r.Form.Get("notes"))
setOptionalFloat(r.Form.Get("latitude"), &s.Lat)
setOptionalFloat(r.Form.Get("longitude"), &s.Lng)
setOptionalFloat(r.Form.Get("elevation"), &s.Elevation)
if r.Form["has_vhf"] == nil {
s.Capabilities.VhfLimits = nil
} else {
vhf := &pb.AzElLimits{}
s.Capabilities.VhfLimits = vhf
setOptionalFloat(r.Form.Get("vhf_min_azimuth"),
&vhf.MinAzimuthDegrees)
setOptionalFloat(r.Form.Get("vhf_max_azimuth"),
&vhf.MaxAzimuthDegrees)
setOptionalFloat(r.Form.Get("vhf_min_elevation"),
&vhf.MinElevationDegrees)
setOptionalFloat(r.Form.Get("vhf_max_elevation"),
&vhf.MaxElevationDegrees)
}
if r.Form["has_uhf"] == nil {
s.Capabilities.UhfLimits = nil
} else {
uhf := &pb.AzElLimits{}
s.Capabilities.UhfLimits = uhf
setOptionalFloat(r.Form.Get("uhf_min_azimuth"),
&uhf.MinAzimuthDegrees)
setOptionalFloat(r.Form.Get("uhf_max_azimuth"),
&uhf.MaxAzimuthDegrees)
setOptionalFloat(r.Form.Get("uhf_min_elevation"),
&uhf.MinElevationDegrees)
setOptionalFloat(r.Form.Get("uhf_max_elevation"),
&uhf.MaxElevationDegrees)
}
if r.Form["scheduler_enabled"] == nil {
s.SchedulerEnabled = nil
} else {
s.SchedulerEnabled = proto.Bool(true)
}
err := sdb.Store(s)
if err != nil {
log.Printf("Station DB store error: %s", err.Error())
http.Error(w, "", http.StatusInternalServerError)
return
}
redirect := stationUrl("/station", *s.Id)
http.Redirect(w, r, redirect, http.StatusFound)
}