1package eu.siacs.conversations.ui;
2
3import android.Manifest;
4import android.app.Activity;
5import android.content.Intent;
6import android.content.pm.PackageManager;
7import android.net.Uri;
8import android.os.Build;
9import android.os.Bundle;
10import android.preference.PreferenceManager;
11import android.util.Log;
12import android.view.View;
13import android.widget.Toast;
14
15import androidx.annotation.StringRes;
16import androidx.appcompat.app.AppCompatActivity;
17import androidx.core.content.ContextCompat;
18import androidx.databinding.DataBindingUtil;
19
20import com.google.common.base.Strings;
21
22import com.cheogram.android.DownloadDefaultStickers;
23
24import org.jetbrains.annotations.NotNull;
25
26import java.io.IOException;
27import java.util.List;
28import java.util.regex.Matcher;
29import java.util.regex.Pattern;
30
31import eu.siacs.conversations.Config;
32import eu.siacs.conversations.R;
33import eu.siacs.conversations.databinding.ActivityUriHandlerBinding;
34import eu.siacs.conversations.http.HttpConnectionManager;
35import eu.siacs.conversations.persistance.DatabaseBackend;
36import eu.siacs.conversations.services.QuickConversationsService;
37import eu.siacs.conversations.utils.ProvisioningUtils;
38import eu.siacs.conversations.utils.SignupUtils;
39import eu.siacs.conversations.utils.XmppUri;
40import eu.siacs.conversations.xmpp.Jid;
41
42import okhttp3.Call;
43import okhttp3.Callback;
44import okhttp3.HttpUrl;
45import okhttp3.Request;
46import okhttp3.Response;
47
48import org.jetbrains.annotations.NotNull;
49
50import java.io.IOException;
51import java.util.List;
52import java.util.regex.Matcher;
53import java.util.regex.Pattern;
54
55public class UriHandlerActivity extends AppCompatActivity {
56
57 public static final String ACTION_SCAN_QR_CODE = "scan_qr_code";
58 private static final String EXTRA_ALLOW_PROVISIONING = "extra_allow_provisioning";
59 private static final int REQUEST_SCAN_QR_CODE = 0x1234;
60 private static final int REQUEST_CAMERA_PERMISSIONS_TO_SCAN = 0x6789;
61 private static final int REQUEST_CAMERA_PERMISSIONS_TO_SCAN_AND_PROVISION = 0x6790;
62 private static final Pattern V_CARD_XMPP_PATTERN = Pattern.compile("\nIMPP([^:]*):(xmpp:.+)\n");
63 private static final Pattern LINK_HEADER_PATTERN = Pattern.compile("<(.*?)>");
64 private ActivityUriHandlerBinding binding;
65 private Call call;
66 private Uri stickers;
67
68 public static void scan(final Activity activity) {
69 scan(activity, false);
70 }
71
72 public static void scan(final Activity activity, final boolean provisioning) {
73 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M
74 || ContextCompat.checkSelfPermission(activity, Manifest.permission.CAMERA)
75 == PackageManager.PERMISSION_GRANTED) {
76 final Intent intent = new Intent(activity, UriHandlerActivity.class);
77 intent.setAction(UriHandlerActivity.ACTION_SCAN_QR_CODE);
78 if (provisioning) {
79 intent.putExtra(EXTRA_ALLOW_PROVISIONING, true);
80 }
81 intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
82 activity.startActivity(intent);
83 } else {
84 activity.requestPermissions(
85 new String[] {Manifest.permission.CAMERA},
86 provisioning
87 ? REQUEST_CAMERA_PERMISSIONS_TO_SCAN_AND_PROVISION
88 : REQUEST_CAMERA_PERMISSIONS_TO_SCAN);
89 }
90 }
91
92 public static void onRequestPermissionResult(
93 Activity activity, int requestCode, int[] grantResults) {
94 if (requestCode != REQUEST_CAMERA_PERMISSIONS_TO_SCAN
95 && requestCode != REQUEST_CAMERA_PERMISSIONS_TO_SCAN_AND_PROVISION) {
96 return;
97 }
98 if (grantResults.length > 0) {
99 if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
100 if (requestCode == REQUEST_CAMERA_PERMISSIONS_TO_SCAN_AND_PROVISION) {
101 scan(activity, true);
102 } else {
103 scan(activity);
104 }
105 } else {
106 Toast.makeText(
107 activity,
108 R.string.qr_code_scanner_needs_access_to_camera,
109 Toast.LENGTH_SHORT)
110 .show();
111 }
112 }
113 }
114
115 @Override
116 protected void onCreate(Bundle savedInstanceState) {
117 super.onCreate(savedInstanceState);
118 this.binding = DataBindingUtil.setContentView(this, R.layout.activity_uri_handler);
119 }
120
121 @Override
122 public void onStart() {
123 super.onStart();
124 handleIntent(getIntent());
125 }
126
127 @Override
128 public void onNewIntent(final Intent intent) {
129 super.onNewIntent(intent);
130 handleIntent(intent);
131 }
132
133
134 @Override
135 public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
136 super.onRequestPermissionsResult(requestCode, permissions, grantResults);
137 if (grantResults.length > 0) {
138 if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
139 downloadStickers();
140 }
141 }
142 finish();
143 }
144
145 private void downloadStickers() {
146 Intent intent = new Intent(this, DownloadDefaultStickers.class);
147 intent.setData(stickers);
148 intent.putExtra("tor", PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getBoolean("use_tor", getResources().getBoolean(R.bool.use_tor)));
149 ContextCompat.startForegroundService(this, intent);
150 Toast.makeText(this, "Sticker download started", Toast.LENGTH_SHORT).show();
151 finish();
152 }
153
154 private boolean handleUri(final Uri uri) {
155 return handleUri(uri, false);
156 }
157
158 private boolean handleUri(final Uri uri, final boolean scanned) {
159 final Intent intent;
160 final XmppUri xmppUri = new XmppUri(uri);
161 final List<Jid> accounts = DatabaseBackend.getInstance(this).getAccountJids(false);
162
163 if (uri.getScheme().equals("sgnl")) {
164 stickers = Uri.parse("https://stickers.cheogram.com/signal/" + uri.getQueryParameter("pack_id") + "," + uri.getQueryParameter("pack_key"));
165 if (hasStoragePermission(1)) downloadStickers();
166 return false;
167 }
168
169 if (uri.getScheme().equals("https") && uri.getHost().equals("signal.art")) {
170 android.net.UrlQuerySanitizer q = new android.net.UrlQuerySanitizer();
171 q.setAllowUnregisteredParamaters(true);
172 q.parseQuery(uri.getFragment());
173 stickers = Uri.parse("https://stickers.cheogram.com/signal/" + q.getValue("pack_id") + "," + q.getValue("pack_key"));
174 if (hasStoragePermission(1)) downloadStickers();
175 return false;
176 }
177
178 if (SignupUtils.isSupportTokenRegistry() && xmppUri.isValidJid()) {
179 final String preAuth = xmppUri.getParameter(XmppUri.PARAMETER_PRE_AUTH);
180 final Jid jid = xmppUri.getJid();
181 if (xmppUri.isAction(XmppUri.ACTION_REGISTER)) {
182 if (jid.getEscapedLocal() != null && accounts.contains(jid.asBareJid())) {
183 showError(R.string.account_already_exists);
184 return false;
185 }
186 intent = SignupUtils.getTokenRegistrationIntent(this, jid, preAuth);
187 startActivity(intent);
188 return true;
189 }
190 if (accounts.size() == 0
191 && xmppUri.isAction(XmppUri.ACTION_ROSTER)
192 && "y"
193 .equalsIgnoreCase(
194 Strings.nullToEmpty(xmppUri.getParameter(XmppUri.PARAMETER_IBR))
195 .trim())) {
196 intent = SignupUtils.getTokenRegistrationIntent(this, jid.getDomain(), preAuth);
197 intent.putExtra(StartConversationActivity.EXTRA_INVITE_URI, xmppUri.toString());
198 startActivity(intent);
199 return true;
200 }
201 } else if (xmppUri.isAction(XmppUri.ACTION_REGISTER)) {
202 showError(R.string.account_registrations_are_not_supported);
203 return false;
204 }
205
206 if (accounts.size() == 0) {
207 if (xmppUri.isValidJid()) {
208 intent = SignupUtils.getSignUpIntent(this);
209 intent.putExtra(StartConversationActivity.EXTRA_INVITE_URI, xmppUri.toString());
210 startActivity(intent);
211 return true;
212 } else {
213 showError(R.string.invalid_jid);
214 return false;
215 }
216 }
217
218 if (xmppUri.isAction(XmppUri.ACTION_MESSAGE) || xmppUri.isAction("command")) {
219 final Jid jid = xmppUri.getJid();
220 final String body = xmppUri.getBody();
221
222 if (jid != null) {
223 final Class<?> clazz = findShareViaAccountClass();
224 if (clazz != null) {
225 intent = new Intent(this, clazz);
226 intent.setData(uri);
227 } else {
228 intent = new Intent(this, StartConversationActivity.class);
229 intent.setAction(Intent.ACTION_VIEW);
230 intent.setData(uri);
231 intent.putExtra("account", accounts.get(0).toEscapedString());
232 }
233 } else {
234 intent = new Intent(this, ShareWithActivity.class);
235 intent.setAction(Intent.ACTION_SEND);
236 intent.setType("text/plain");
237 intent.putExtra(Intent.EXTRA_TEXT, body);
238 }
239 } else if (accounts.contains(xmppUri.getJid())) {
240 intent = new Intent(getApplicationContext(), EditAccountActivity.class);
241 intent.setAction(Intent.ACTION_VIEW);
242 intent.putExtra("jid", xmppUri.getJid().asBareJid().toString());
243 intent.setData(uri);
244 intent.putExtra("scanned", scanned);
245 } else if (xmppUri.isValidJid()) {
246 intent = new Intent(getApplicationContext(), StartConversationActivity.class);
247 intent.setAction(Intent.ACTION_VIEW);
248 intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
249 intent.putExtra("scanned", scanned);
250 intent.setData(uri);
251 } else {
252 showError(R.string.invalid_jid);
253 return false;
254 }
255 startActivity(intent);
256 return true;
257 }
258
259 private void checkForLinkHeader(final HttpUrl url) {
260 Log.d(Config.LOGTAG, "checking for link header on " + url);
261 this.call =
262 HttpConnectionManager.OK_HTTP_CLIENT.newCall(
263 new Request.Builder().url(url).head().build());
264 this.call.enqueue(
265 new Callback() {
266 @Override
267 public void onFailure(@NotNull Call call, @NotNull IOException e) {
268 Log.d(Config.LOGTAG, "unable to check HTTP url", e);
269 showError(R.string.no_xmpp_adddress_found);
270 }
271
272 @Override
273 public void onResponse(@NotNull Call call, @NotNull Response response) {
274 if (response.isSuccessful()) {
275 final String linkHeader = response.header("Link");
276 if (linkHeader != null && processLinkHeader(linkHeader)) {
277 return;
278 }
279 }
280 showError(R.string.no_xmpp_adddress_found);
281 }
282 });
283 }
284
285 private boolean processLinkHeader(final String header) {
286 final Matcher matcher = LINK_HEADER_PATTERN.matcher(header);
287 if (matcher.find()) {
288 final String group = matcher.group();
289 final String link = group.substring(1, group.length() - 1);
290 if (handleUri(Uri.parse(link))) {
291 finish();
292 return true;
293 }
294 }
295 return false;
296 }
297
298 private void showError(@StringRes int error) {
299 this.binding.progress.setVisibility(View.INVISIBLE);
300 this.binding.error.setText(error);
301 this.binding.error.setVisibility(View.VISIBLE);
302 }
303
304 private static Class<?> findShareViaAccountClass() {
305 try {
306 return Class.forName("eu.siacs.conversations.ui.ShareViaAccountActivity");
307 } catch (final ClassNotFoundException e) {
308 return null;
309 }
310 }
311
312 private void handleIntent(final Intent data) {
313 final String action = data == null ? null : data.getAction();
314 if (action == null) {
315 return;
316 }
317 switch (action) {
318 case Intent.ACTION_MAIN:
319 binding.progress.setVisibility(
320 call != null && !call.isCanceled() ? View.VISIBLE : View.INVISIBLE);
321 break;
322 case Intent.ACTION_VIEW:
323 case Intent.ACTION_SENDTO:
324 if (handleUri(data.getData())) {
325 finish();
326 }
327 break;
328 case ACTION_SCAN_QR_CODE:
329 Log.d(Config.LOGTAG, "scan. allow=" + allowProvisioning());
330 setIntent(createMainIntent());
331 startActivityForResult(new Intent(this, ScanActivity.class), REQUEST_SCAN_QR_CODE);
332 break;
333 }
334 }
335
336 private Intent createMainIntent() {
337 final Intent intent = new Intent(Intent.ACTION_MAIN);
338 intent.putExtra(EXTRA_ALLOW_PROVISIONING, allowProvisioning());
339 return intent;
340 }
341
342 private boolean allowProvisioning() {
343 final Intent launchIntent = getIntent();
344 return launchIntent != null
345 && launchIntent.getBooleanExtra(EXTRA_ALLOW_PROVISIONING, false);
346 }
347
348 @Override
349 public void onActivityResult(final int requestCode, final int resultCode, final Intent intent) {
350 super.onActivityResult(requestCode, requestCode, intent);
351 if (requestCode == REQUEST_SCAN_QR_CODE && resultCode == RESULT_OK) {
352 final boolean allowProvisioning = allowProvisioning();
353 final String result = intent.getStringExtra(ScanActivity.INTENT_EXTRA_RESULT);
354 if (Strings.isNullOrEmpty(result)) {
355 finish();
356 return;
357 }
358 if (result.startsWith("BEGIN:VCARD\n")) {
359 final Matcher matcher = V_CARD_XMPP_PATTERN.matcher(result);
360 if (matcher.find()) {
361 if (handleUri(Uri.parse(matcher.group(2)), true)) {
362 finish();
363 }
364 } else {
365 showError(R.string.no_xmpp_adddress_found);
366 }
367 return;
368 } else if (QuickConversationsService.isConversations()
369 && looksLikeJsonObject(result)
370 && allowProvisioning) {
371 ProvisioningUtils.provision(this, result);
372 finish();
373 return;
374 }
375 final Uri uri = Uri.parse(result.trim());
376 if (allowProvisioning
377 && "https".equalsIgnoreCase(uri.getScheme())
378 && !XmppUri.INVITE_DOMAIN.equalsIgnoreCase(uri.getHost())) {
379 final HttpUrl httpUrl = HttpUrl.parse(uri.toString());
380 if (httpUrl != null) {
381 checkForLinkHeader(httpUrl);
382 } else {
383 finish();
384 }
385 } else if (handleUri(uri, true)) {
386 finish();
387 } else {
388 setIntent(new Intent(Intent.ACTION_VIEW, uri));
389 }
390 } else {
391 finish();
392 }
393 }
394
395 private static boolean looksLikeJsonObject(final String input) {
396 final String trimmed = Strings.nullToEmpty(input).trim();
397 return trimmed.charAt(0) == '{' && trimmed.charAt(trimmed.length() - 1) == '}';
398 }
399
400 protected boolean hasStoragePermission(int requestCode) {
401 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
402 if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
403 requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
404 return false;
405 } else {
406 return true;
407 }
408 } else {
409 return true;
410 }
411 }
412}