76 lines
2.2 KiB
Java
76 lines
2.2 KiB
Java
package eu.siacs.conversations.generator;
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import android.util.Base64;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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import java.util.TimeZone;
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import eu.siacs.conversations.services.XmppConnectionService;
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public abstract class AbstractGenerator {
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private final String[] FEATURES = {
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"urn:xmpp:jingle:1",
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"urn:xmpp:jingle:apps:file-transfer:3",
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"urn:xmpp:jingle:transports:s5b:1",
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"urn:xmpp:jingle:transports:ibb:1",
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"http://jabber.org/protocol/muc",
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"jabber:x:conference",
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"http://jabber.org/protocol/caps",
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"http://jabber.org/protocol/disco#info",
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"urn:xmpp:avatar:metadata+notify",
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"urn:xmpp:ping"};
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private final String[] MESSAGE_CONFIRMATION_FEATURES = {
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"urn:xmpp:chat-markers:0",
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"urn:xmpp:receipts"
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};
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public final String IDENTITY_NAME = "Conversations 1.0";
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public final String IDENTITY_TYPE = "phone";
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private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
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protected XmppConnectionService mXmppConnectionService;
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protected AbstractGenerator(XmppConnectionService service) {
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this.mXmppConnectionService = service;
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}
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public String getCapHash() {
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StringBuilder s = new StringBuilder();
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s.append("client/" + IDENTITY_TYPE + "//" + IDENTITY_NAME + "<");
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MessageDigest md = null;
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try {
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md = MessageDigest.getInstance("SHA-1");
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} catch (NoSuchAlgorithmException e) {
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return null;
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}
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for (String feature : getFeatures()) {
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s.append(feature + "<");
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}
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byte[] sha1 = md.digest(s.toString().getBytes());
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return new String(Base64.encode(sha1, Base64.DEFAULT)).trim();
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}
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public static String getTimestamp(long time) {
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DATE_FORMAT.setTimeZone(TimeZone.getTimeZone("UTC"));
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return DATE_FORMAT.format(time);
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}
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public List<String> getFeatures() {
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ArrayList<String> features = new ArrayList<>();
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features.addAll(Arrays.asList(FEATURES));
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if (mXmppConnectionService.confirmMessages()) {
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features.addAll(Arrays.asList(MESSAGE_CONFIRMATION_FEATURES));
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}
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Collections.sort(features);
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return features;
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}
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}
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