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