offer to open website if ibb offers oob redirect. fixes #2503

src/main/java/eu/siacs/conversations/entities/Account.java

@@ -115,6 +115,7 @@ public class Account extends AbstractEntity {
 		UNAUTHORIZED(true),
 		SERVER_NOT_FOUND(true),
 		REGISTRATION_FAILED(true),
+		REGISTRATION_WEB(true),
 		REGISTRATION_CONFLICT(true),
 		REGISTRATION_SUCCESSFUL,
 		REGISTRATION_NOT_SUPPORTED(true),
@@ -164,6 +165,8 @@ public class Account extends AbstractEntity {
 					return R.string.account_status_no_internet;
 				case REGISTRATION_FAILED:
 					return R.string.account_status_regis_fail;
+				case REGISTRATION_WEB:
+					return R.string.account_status_regis_web;
 				case REGISTRATION_CONFLICT:
 					return R.string.account_status_regis_conflict;
 				case REGISTRATION_SUCCESSFUL:

src/main/java/eu/siacs/conversations/ui/EditAccountActivity.java

@@ -129,6 +129,7 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
 		public void onClick(final View v) {
 			final String password = mPassword.getText().toString();
 			final String passwordConfirm = mPasswordConfirm.getText().toString();
+			final boolean wasDisabled = mAccount != null && mAccount.getStatus() == Account.State.DISABLED;
 
 			if (!mInitMode && passwordChangedInMagicCreateMode()) {
 				gotoChangePassword(password);
@@ -150,6 +151,19 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
 				mAccountJid.requestFocus();
 				return;
 			}
+
+			XmppConnection connection = mAccount == null ? null : mAccount.getXmppConnection();
+			String url = connection != null && mAccount.getStatus() == Account.State.REGISTRATION_WEB ? connection.getWebRegistrationUrl() : null;
+			if (url != null && registerNewAccount && !wasDisabled) {
+				try {
+					startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
+					return;
+				} catch (ActivityNotFoundException e) {
+					Toast.makeText(EditAccountActivity.this,R.string.application_found_to_open_website,Toast.LENGTH_SHORT);
+					return;
+				}
+			}
+
 			final Jid jid;
 			try {
 				if (mUsernameMode) {
@@ -436,11 +450,17 @@ public class EditAccountActivity extends OmemoActivity implements OnAccountUpdat
 				} else {
 					this.mSaveButton.setText(R.string.connect);
 				}
+			} else {
+				XmppConnection connection = mAccount == null ? null : mAccount.getXmppConnection();
+				String url = connection != null && mAccount.getStatus() == Account.State.REGISTRATION_WEB ? connection.getWebRegistrationUrl() : null;
+				if (url != null && mRegisterNew.isChecked()) {
+					this.mSaveButton.setText(R.string.open_website);
 				} else {
 					this.mSaveButton.setText(R.string.next);
 				}
 			}
 		}
+	}
 
 	protected boolean accountInfoEdited() {
 		if (this.mAccount == null) {

src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java

@@ -40,6 +40,7 @@ import java.util.List;
 import java.util.Map.Entry;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.regex.Matcher;
 
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.KeyManager;
@@ -67,6 +68,7 @@ import eu.siacs.conversations.generator.IqGenerator;
 import eu.siacs.conversations.services.NotificationService;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.utils.DNSHelper;
+import eu.siacs.conversations.utils.Patterns;
 import eu.siacs.conversations.utils.SSLSocketHelper;
 import eu.siacs.conversations.utils.SocksSocketFactory;
 import eu.siacs.conversations.xml.Element;
@@ -137,6 +139,7 @@ public class XmppConnection implements Runnable {
 	private final XmppConnectionService mXmppConnectionService;
 
 	private SaslMechanism saslMechanism;
+	private String webRegistrationUrl = null;
 
 	private class MyKeyManager implements X509KeyManager {
 		@Override
@@ -438,7 +441,7 @@ public class XmppConnection implements Runnable {
 					}
 				}
 			} else {
-				Log.d(Config.LOGTAG,account.getJid().toBareJid()+": not force closing socket and releasing wake lock because thread was interrupted");
+				Log.d(Config.LOGTAG,account.getJid().toBareJid()+": not force closing socket and releasing wake lock (is held="+wakeLock.isHeld()+") because thread was interrupted");
 			}
 		}
 	}
@@ -976,19 +979,38 @@ public class XmppConnection implements Runnable {
 				}
 
 				if (failed) {
-					final Element instructions = packet.query().findChild("instructions");
+					final Element query = packet.query();
-					setAccountCreationFailed((instructions != null) ? instructions.getContent() : "");
+					final String instructions = query.findChildContent("instructions");
+					final Element oob = query.findChild("x",Namespace.OOB);
+					final String url = oob == null ? null : oob.findChildContent("url");
+					if (url == null && instructions != null) {
+						Matcher matcher = Patterns.AUTOLINK_WEB_URL.matcher(instructions);
+						if (matcher.find()) {
+							setAccountCreationFailed(instructions.substring(matcher.start(),matcher.end()));
+						} else {
+							setAccountCreationFailed(null);
+						}
+					} else {
+						setAccountCreationFailed(url);
+					}
 				}
 			}
 		});
 	}
 
-	private void setAccountCreationFailed(String instructions) {
+	private void setAccountCreationFailed(String url) {
+		if (url != null && (url.toLowerCase().startsWith("http://") || url.toLowerCase().startsWith("https://"))) {
+			changeStatus(Account.State.REGISTRATION_WEB);
+			this.webRegistrationUrl = url;
+		} else {
 			changeStatus(Account.State.REGISTRATION_FAILED);
+		}
 		disconnect(true);
-		Log.d(Config.LOGTAG, account.getJid().toBareJid()
+		Log.d(Config.LOGTAG, account.getJid().toBareJid()+": could not register. url="+url);
-				+ ": could not register. instructions are"
+	}
-				+ instructions);
+
+	public String getWebRegistrationUrl() {
+		return this.webRegistrationUrl;
 	}
 
 	public void resetEverything() {
@@ -996,6 +1018,7 @@ public class XmppConnection implements Runnable {
 		resetStreamId();
 		clearIqCallbacks();
 		mStanzaQueue.clear();
+		this.webRegistrationUrl = null;
 		synchronized (this.disco) {
 			disco.clear();
 		}

src/main/res/values/strings.xml

@@ -749,4 +749,7 @@
 	<string name="retry_decryption">Retry decryption</string>
 	<string name="session_failure">Session failure</string>
 	<string name="sasl_downgrade">Downgraded SASL mechanism</string>
+	<string name="account_status_regis_web">Server requires registration on website</string>
+	<string name="open_website">Open website</string>
+	<string name="application_found_to_open_website">No application found to open website</string>
 </resources>