source: osm/applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/CadastreInterface.java@ 19928

Last change on this file since 19928 was 19267, checked in by pieren, 16 years ago

Several minor improvements.
  • Property svn:eol-style set to native
File size: 24.0 KB
Line 
1// License: GPL. v2 and later. Copyright 2008-2009 by Pieren <pieren3@gmail.com> and others
2package cadastre_fr;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.GridBagLayout;
7import java.io.BufferedReader;
8import java.io.IOException;
9import java.io.InputStreamReader;
10import java.io.OutputStream;
11import java.net.HttpURLConnection;
12import java.net.MalformedURLException;
13import java.net.URL;
14import java.util.Date;
15import java.util.Vector;
16
17import javax.swing.JComboBox;
18import javax.swing.JDialog;
19import javax.swing.JOptionPane;
20import javax.swing.JPanel;
21
22import org.openstreetmap.josm.Main;
23import org.openstreetmap.josm.data.coor.EastNorth;
24import org.openstreetmap.josm.gui.layer.Layer;
25import org.openstreetmap.josm.tools.GBC;
26
27public class CadastreInterface {
28 public boolean downloadCancelled = false;
29 public HttpURLConnection urlConn = null;
30
31 private String cookie;
32 private String interfaceRef = null;
33 private String lastWMSLayerName = null;
34 private URL searchFormURL;
35 private Vector<String> listOfCommunes = new Vector<String>();
36 private Vector<String> listOfTA = new Vector<String>();
37 class PlanImage {
38 String name;
39 String ref;
40 PlanImage(String name, String ref) {
41 this.name = name;
42 this.ref = ref;
43 }
44 }
45 private Vector<PlanImage> listOfFeuilles = new Vector<PlanImage>();
46 private long cookieTimestamp;
47
48 final String baseURL = "http://www.cadastre.gouv.fr";
49 final String cImageFormat = "Cette commune est au format ";
50 final String cCommuneListStart = "<select name=\"codeCommune\"";
51 final String cCommuneListEnd = "</select>";
52 final String c0ptionListStart = "<option value=\"";
53 final String cOptionListEnd = "</option>";
54 final String cBBoxCommunStart = "new GeoBox(";
55 final String cBBoxCommunEnd = ")";
56
57 final String cInterfaceVector = "afficherCarteCommune.do";
58 final String cInterfaceRasterTA = "afficherCarteTa.do";
59 final String cInterfaceRasterFeuille = "afficherCarteFeuille.do";
60 final String cImageLinkStart = "title=\"image\"><a href=\"#\" onClick=\"popup('afficherCarteFeuille.do?f=";
61 final String cImageNameStart = ">Feuille ";
62
63 final static long cCookieExpiration = 30 * 60 * 1000; // 30 minutes expressed in milliseconds
64
65 final int cRetriesGetCookie = 10; // 10 times every 3 seconds means 30 seconds trying to get a cookie
66
67 public boolean retrieveInterface(WMSLayer wmsLayer) throws DuplicateLayerException {
68 if (wmsLayer.getName().equals(""))
69 return false;
70 if (wmsLayer.getName().equals(lastWMSLayerName))
71 return true;
72 // open the session with the French Cadastre web front end
73 downloadCancelled = false;
74 try {
75 if (cookie == null || isCookieExpired())
76 getCookie();
77 if (cookie != null && interfaceRef == null) {
78 getInterface(wmsLayer);
79 this.lastWMSLayerName = wmsLayer.getName();
80 } else {
81 JOptionPane.showMessageDialog(Main.parent,
82 tr("Cannot open a new client session.\nServer in maintenance or temporary overloaded."));
83 return false;
84 }
85 openInterface();
86 } catch (IOException e) {
87 JOptionPane.showMessageDialog(Main.parent,
88 tr("Town/city {0} not found or not available\n" +
89 "or action canceled", wmsLayer.getLocation()));
90 return false;
91 }
92 return true;
93 }
94
95 /**
96 *
97 * @return true if a cookie is delivered by WMS and false is WMS is not opening a client session
98 * (too many clients or in maintenance)
99 * @throws IOException
100 */
101 private void getCookie() throws IOException {
102 boolean cookied = false;
103 int retries = cRetriesGetCookie;
104 try {
105 searchFormURL = new URL(baseURL + "/scpc/accueil.do");
106 while (cookied == false && retries > 0) {
107 urlConn = (HttpURLConnection)searchFormURL.openConnection();
108 urlConn.setRequestMethod("GET");
109 urlConn.connect();
110 if (urlConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
111 System.out.println("GET "+searchFormURL);
112 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
113 while(in.readLine() != null) {} // read the buffer otherwise we sent POST too early
114 String headerName=null;
115 for (int i=1; (headerName = urlConn.getHeaderFieldKey(i))!=null; i++) {
116 if (headerName.equals("Set-Cookie")) {
117 cookie = urlConn.getHeaderField(i);
118 cookie = cookie.substring(0, cookie.indexOf(";"));
119 cookieTimestamp = new Date().getTime();
120 System.out.println("received cookie=" + cookie + " at " + new Date(cookieTimestamp));
121 cookied = true;
122 }
123 }
124 } else {
125 System.out.println("Request to home page failed. Http error:"+urlConn.getResponseCode()+". Try again "+retries+" times");
126 CadastrePlugin.safeSleep(3000);
127 retries --;
128 }
129 }
130 } catch (MalformedURLException e) {
131 throw (IOException) new IOException(
132 "Illegal url.").initCause(e);
133 }
134 }
135
136 public void resetCookie() {
137 lastWMSLayerName = null;
138 cookie = null;
139 }
140
141 public boolean isCookieExpired() {
142 long now = new Date().getTime();
143 if ((now - cookieTimestamp) > cCookieExpiration) {
144 System.out.println("cookie received at "+new Date(cookieTimestamp)+" expired (now is "+new Date(now)+")");
145 return true;
146 }
147 return false;
148 }
149
150 public void resetInterfaceRefIfNewLayer(String newWMSLayerName) {
151 if (!newWMSLayerName.equals(lastWMSLayerName)) {
152 interfaceRef = null;
153 }
154 }
155
156 public void setCookie() {
157 this.urlConn.setRequestProperty("Cookie", this.cookie);
158 }
159
160 public void setCookie(HttpURLConnection urlConn) {
161 urlConn.setRequestProperty("Cookie", this.cookie);
162 }
163
164 private void getInterface(WMSLayer wmsLayer) throws IOException, DuplicateLayerException {
165 // first attempt : search for given name without codeCommune
166 interfaceRef = postForm(wmsLayer, "");
167 // second attempt either from known codeCommune (e.g. from cache) or from ComboBox
168 if (interfaceRef == null) {
169 if (!wmsLayer.getCodeCommune().equals("")) {
170 // codeCommune is already known (from previous request or from cache on disk)
171 interfaceRef = postForm(wmsLayer, wmsLayer.getCodeCommune());
172 } else {
173 if (listOfCommunes.size() > 1) {
174 // commune unknown, prompt the list of communes from
175 // server and try with codeCommune
176 wmsLayer.setCodeCommune(selectCommuneDialog());
177 checkLayerDuplicates(wmsLayer);
178 interfaceRef = postForm(wmsLayer, wmsLayer.getCodeCommune());
179 }
180 if (listOfCommunes.size() == 1 && wmsLayer.isRaster()) {
181 // commune known but raster format. Select "Feuille" (non-georeferenced image) from list.
182 int res = selectFeuilleDialog();
183 if (res != -1) {
184 wmsLayer.setCodeCommune(listOfFeuilles.elementAt(res).name);
185 checkLayerDuplicates(wmsLayer);
186 interfaceRef = buildRasterFeuilleInterfaceRef(wmsLayer.getCodeCommune());
187 }
188 }
189 }
190 }
191
192 if (interfaceRef == null)
193 throw new IOException("Town/city " + wmsLayer.getLocation() + " not found.");
194 }
195
196 private void openInterface() throws IOException {
197 try {
198 // finally, open the interface on server side giving access to the wms server
199 String lines = null;
200 String ln = null;
201 URL interfaceURL = new URL(baseURL + "/scpc/"+interfaceRef);
202 urlConn = (HttpURLConnection)interfaceURL.openConnection();
203 urlConn.setRequestMethod("GET");
204 setCookie();
205 urlConn.connect();
206 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
207 throw new IOException("Cannot open Cadastre interface. GET response:"+urlConn.getResponseCode());
208 }
209 System.out.println("GET "+interfaceURL);
210 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
211 // read the buffer otherwise we sent POST too early
212 while ((ln = in.readLine()) != null) {
213 lines += ln;
214 }
215 } catch (MalformedURLException e) {
216 throw (IOException) new IOException(
217 "CadastreGrabber: Illegal url.").initCause(e);
218 }
219 }
220
221 /**
222 * Post the form with the commune name and check the returned answer which is embedded
223 * in HTTP XML packets. This function doesn't use an XML parser yet but that would be a good idea
224 * for the next releases.
225 * Two possibilities :
226 * - either the commune name matches and we receive an URL starting with "afficherCarteCommune.do" or
227 * - we don't receive a single answer but a list of possible values. This answer looks like:
228 * <select name="codeCommune" class="long erreur" id="codeCommune">
229 * <option value="">Choisir</option>
230 * <option value="50061" >COLMARS - 04370</option>
231 * <option value="QK066" >COLMAR - 68000</option>
232 * </select>
233 * The returned string is the interface name used in further requests, e.g. "afficherCarteCommune.do?c=QP224"
234 * where QP224 is the code commune known by the WMS (or "afficherCarteTa.do?c=..." for raster images).
235 *
236 * @param location
237 * @param codeCommune
238 * @return retURL url to available code commune in the cadastre; "" if not found
239 * @throws IOException
240 */
241 private String postForm(WMSLayer wmsLayer, String codeCommune) throws IOException {
242 try {
243 String ln = null;
244 String lines = null;
245 listOfCommunes.clear();
246 listOfTA.clear();
247 // send a POST request with a city/town/village name
248 String content = "numerovoie=";
249 content += "&indiceRepetition=";
250 content += "&nomvoie=";
251 content += "&lieuDit=";
252 if (codeCommune == "") {
253 content += "&ville=" + new String(java.net.URLEncoder.encode(wmsLayer.getLocation(), "UTF-8"));
254 content += "&codePostal=";
255 } else {
256 content += "&codeCommune=" + codeCommune;
257 }
258 content += "&codeDepartement=";
259 content += "&nbResultatParPage=10";
260 content += "&x=0&y=0";
261 searchFormURL = new URL(baseURL + "/scpc/rechercherPlan.do");
262 urlConn = (HttpURLConnection)searchFormURL.openConnection();
263 urlConn.setRequestMethod("POST");
264 urlConn.setDoOutput(true);
265 urlConn.setDoInput(true);
266 setCookie();
267 OutputStream wr = urlConn.getOutputStream();
268 wr.write(content.getBytes());
269 System.out.println("POST "+content);
270 wr.flush();
271 wr.close();
272 BufferedReader rd = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
273 while ((ln = rd.readLine()) != null) {
274 lines += ln;
275 }
276 rd.close();
277 urlConn.disconnect();
278 if (lines != null) {
279 if (lines.indexOf(cImageFormat) != -1) {
280 int i = lines.indexOf(cImageFormat);
281 int j = lines.indexOf(".", i);
282 wmsLayer.setRaster(lines.substring(i+cImageFormat.length(), j).equals("image"));
283 }
284 if (!wmsLayer.isRaster() && lines.indexOf(cInterfaceVector) != -1) { // "afficherCarteCommune.do"
285 // shall be something like: interfaceRef = "afficherCarteCommune.do?c=X2269";
286 lines = lines.substring(lines.indexOf(cInterfaceVector),lines.length());
287 lines = lines.substring(0, lines.indexOf("'"));
288 System.out.println("interface ref.:"+lines);
289 return lines;
290 } else if (wmsLayer.isRaster() && lines.indexOf(cInterfaceRasterTA) != -1) { // "afficherCarteTa.do"
291 // list of values parsed in listOfFeuilles (list all non-georeferenced images)
292 lines = getFeuillesList();
293 if (!downloadCancelled) {
294 parseFeuillesList(lines);
295 if (listOfFeuilles.size() > 0) {
296 int res = selectFeuilleDialog();
297 if (res != -1) {
298 wmsLayer.setCodeCommune(listOfFeuilles.elementAt(res).name);
299 checkLayerDuplicates(wmsLayer);
300 interfaceRef = buildRasterFeuilleInterfaceRef(wmsLayer.getCodeCommune());
301 wmsLayer.setCodeCommune(listOfFeuilles.elementAt(res).ref);
302 lines = buildRasterFeuilleInterfaceRef(listOfFeuilles.elementAt(res).ref);
303 System.out.println("interface ref.:"+lines);
304 return lines;
305 }
306 }
307 }
308 return null;
309 } else if (lines.indexOf(cCommuneListStart) != -1 && lines.indexOf(cCommuneListEnd) != -1) {
310 // list of values parsed in listOfCommunes
311 int i = lines.indexOf(cCommuneListStart);
312 int j = lines.indexOf(cCommuneListEnd, i);
313 parseCommuneList(lines.substring(i, j));
314 }
315 }
316 } catch (MalformedURLException e) {
317 throw (IOException) new IOException(
318 "Illegal url.").initCause(e);
319 } catch (Exception e){
320 e.printStackTrace();
321 }
322 return null;
323 }
324
325 private void parseCommuneList(String input) {
326 if (input.indexOf(c0ptionListStart) != -1) {
327 while (input.indexOf("<option value=\"") != -1) {
328 int i = input.indexOf(c0ptionListStart);
329 int j = input.indexOf(cOptionListEnd, i+c0ptionListStart.length());
330 int k = input.indexOf("\"", i+c0ptionListStart.length());
331 if (j != -1 && k > (i + c0ptionListStart.length())) {
332 String lov = new String(input.substring(i+c0ptionListStart.length()-1, j));
333 if (lov.indexOf(">") != -1) {
334 System.out.println("parse "+lov);
335 listOfCommunes.add(lov);
336 } else
337 System.err.println("unable to parse commune string:"+lov);
338 }
339 input = input.substring(j+cOptionListEnd.length());
340 }
341 }
342 }
343
344 private String getFeuillesList() {
345 // get all images in one html page
346 String ln = null;
347 String lines = null;
348 HttpURLConnection urlConn2 = null;
349 try {
350 URL getAllImagesURL = new URL(baseURL + "/scpc/listerFeuillesParcommune.do?keepVolatileSession=&offset=2000");
351 urlConn2 = (HttpURLConnection)getAllImagesURL.openConnection();
352 setCookie(urlConn2);
353 urlConn2.connect();
354 System.out.println("GET "+getAllImagesURL);
355 BufferedReader rd = new BufferedReader(new InputStreamReader(urlConn2.getInputStream()));
356 while ((ln = rd.readLine()) != null) {
357 lines += ln;
358 }
359 rd.close();
360 urlConn2.disconnect();
361 //System.out.println("GET="+lines);
362 } catch (IOException e) {
363 listOfFeuilles.clear();
364 e.printStackTrace();
365 }
366 return lines;
367 }
368
369 private void parseFeuillesList(String input) {
370 listOfFeuilles.clear();
371 while (input.indexOf(cImageLinkStart) != -1) {
372 input = input.substring(input.indexOf(cImageLinkStart)+cImageLinkStart.length());
373 String refFeuille = input.substring(0, input.indexOf("'"));
374 String nameFeuille = input.substring(
375 input.indexOf(cImageNameStart)+cImageNameStart.length(),
376 input.indexOf(" -"));
377 listOfFeuilles.add(new PlanImage(nameFeuille, refFeuille));
378 }
379 }
380
381 private String selectCommuneDialog() {
382 JPanel p = new JPanel(new GridBagLayout());
383 String[] communeList = new String[listOfCommunes.size() + 1];
384 communeList[0] = tr("Choose from...");
385 for (int i = 0; i < listOfCommunes.size(); i++) {
386 communeList[i + 1] = listOfCommunes.elementAt(i).substring(listOfCommunes.elementAt(i).indexOf(">")+1);
387 }
388 JComboBox inputCommuneList = new JComboBox(communeList);
389 p.add(inputCommuneList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
390 JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null) {
391 private static final long serialVersionUID = 1L;
392 };
393 //pane.createDialog(Main.parent, tr("Select commune")).setVisible(true);
394 // this below is a temporary workaround to fix the "always on top" issue
395 JDialog dialog = pane.createDialog(Main.parent, tr("Select commune"));
396 CadastrePlugin.prepareDialog(dialog);
397 dialog.setVisible(true);
398 // till here
399 if (!Integer.valueOf(JOptionPane.OK_OPTION).equals(pane.getValue()))
400 return null;
401 String result = listOfCommunes.elementAt(inputCommuneList.getSelectedIndex()-1);
402 return result.substring(1, result.indexOf(">")-2);
403 }
404
405 private int selectFeuilleDialog() {
406 JPanel p = new JPanel(new GridBagLayout());
407 Vector<String> ImageNames = new Vector<String>();
408 for (PlanImage src : listOfFeuilles) {
409 ImageNames.add(src.name);
410 }
411 JComboBox inputFeuilleList = new JComboBox(ImageNames);
412 p.add(inputFeuilleList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
413 JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null);
414 //pane.createDialog(Main.parent, tr("Select Feuille")).setVisible(true);
415 // this below is a temporary workaround to fix the "always on top" issue
416 JDialog dialog = pane.createDialog(Main.parent, tr("Select Feuille"));
417 CadastrePlugin.prepareDialog(dialog);
418 dialog.setVisible(true);
419 // till here
420 if (!Integer.valueOf(JOptionPane.OK_OPTION).equals(pane.getValue()))
421 return -1;
422 int result = inputFeuilleList.getSelectedIndex();
423 return result;
424 }
425
426 private String buildRasterFeuilleInterfaceRef(String codeCommune) {
427 return cInterfaceRasterFeuille + "?f=" + codeCommune;
428 }
429
430 /**
431 * Retrieve the bounding box size in pixels of the whole commune (point 0,0 at top, left corner)
432 * and store it in given wmsLayer
433 * In case of raster image, we also check in the same http request if the image is already georeferenced
434 * and store the result in the wmsLayer as well.
435 * @param wmsLayer the WMSLayer where the commune data and images are stored
436 * @throws IOException
437 */
438 public void retrieveCommuneBBox(WMSLayer wmsLayer) throws IOException {
439 if (interfaceRef == null)
440 return;
441 String ln = null;
442 String line = null;
443 // send GET opening normally the small window with the commune overview
444 String content = baseURL + "/scpc/" + interfaceRef;
445 content += "&dontSaveLastForward&keepVolatileSession=";
446 searchFormURL = new URL(content);
447 urlConn = (HttpURLConnection)searchFormURL.openConnection();
448 urlConn.setRequestMethod("GET");
449 setCookie();
450 urlConn.connect();
451 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
452 throw new IOException("Cannot get Cadastre response.");
453 }
454 System.out.println("GET "+searchFormURL);
455 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
456 while ((ln = in.readLine()) != null) {
457 line += ln;
458 }
459 in.close();
460 urlConn.disconnect();
461 parseBBoxCommune(wmsLayer, line);
462 if (wmsLayer.isRaster() && !wmsLayer.isAlreadyGeoreferenced()) {
463 parseGeoreferences(wmsLayer, line);
464 }
465 }
466
467 private void parseBBoxCommune(WMSLayer wmsLayer, String input) {
468 if (input.indexOf(cBBoxCommunStart) != -1) {
469 input = input.substring(input.indexOf(cBBoxCommunStart));
470 int i = input.indexOf(",");
471 double minx = Double.parseDouble(input.substring(cBBoxCommunStart.length(), i));
472 int j = input.indexOf(",", i+1);
473 double miny = Double.parseDouble(input.substring(i+1, j));
474 int k = input.indexOf(",", j+1);
475 double maxx = Double.parseDouble(input.substring(j+1, k));
476 int l = input.indexOf(cBBoxCommunEnd, k+1);
477 double maxy = Double.parseDouble(input.substring(k+1, l));
478 wmsLayer.setCommuneBBox( new EastNorthBound(new EastNorth(minx,miny), new EastNorth(maxx,maxy)));
479 }
480 }
481
482 private void parseGeoreferences(WMSLayer wmsLayer, String input) {
483 if (input.lastIndexOf(cBBoxCommunStart) != -1) {
484 input = input.substring(input.lastIndexOf(cBBoxCommunStart));
485 input = input.substring(input.indexOf(cBBoxCommunEnd)+cBBoxCommunEnd.length());
486 int i = input.indexOf(",");
487 int j = input.indexOf(",", i+1);
488 double angle = Double.parseDouble(input.substring(i+1, j));
489 int k = input.indexOf(",", j+1);
490 double scale_origin = Double.parseDouble(input.substring(j+1, k));
491 int l = input.indexOf(",", k+1);
492 double dpi = Double.parseDouble(input.substring(k+1, l));
493 int m = input.indexOf(",", l+1);
494 double fX = Double.parseDouble(input.substring(l+1, m));
495 int n = input.indexOf(",", m+1);
496 double fY = Double.parseDouble(input.substring(m+1, n));
497 int o = input.indexOf(",", n+1);
498 double X0 = Double.parseDouble(input.substring(n+1, o));
499 int p = input.indexOf(",", o+1);
500 double Y0 = Double.parseDouble(input.substring(o+1, p));
501 if (X0 != 0.0 && Y0 != 0) {
502 wmsLayer.setAlreadyGeoreferenced(true);
503 wmsLayer.fX = fX;
504 wmsLayer.fY = fY;
505 wmsLayer.angle = angle;
506 wmsLayer.X0 = X0;
507 wmsLayer.Y0 = Y0;
508 }
509 System.out.println("parse georef:"+angle+","+scale_origin+","+dpi+","+fX+","+
510 fY+","+X0+","+Y0);
511 }
512 }
513
514 private void checkLayerDuplicates(WMSLayer wmsLayer) throws DuplicateLayerException {
515 if (Main.map != null) {
516 for (Layer l : Main.map.mapView.getAllLayers()) {
517 if (l instanceof WMSLayer && l.getName().equals(wmsLayer.getName()) && (l != wmsLayer)) {
518 System.out.println("Try to grab into a new layer when "+wmsLayer.getName()+" is already opened.");
519 // remove the duplicated layer
520 Main.map.mapView.removeLayer(wmsLayer);
521 throw new DuplicateLayerException();
522 }
523 }
524 }
525 }
526
527 public void cancel() {
528 if (urlConn != null) {
529 urlConn.setConnectTimeout(1);
530 urlConn.setReadTimeout(1);
531 //urlConn.disconnect();
532 }
533 downloadCancelled = true;
534 lastWMSLayerName = null;
535 }
536
537}
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