265 lines
8.7 KiB
Java
265 lines
8.7 KiB
Java
package eu.siacs.conversations.utils;
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import android.net.Uri;
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import androidx.annotation.NonNull;
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import com.google.common.base.CharMatcher;
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import com.google.common.collect.Collections2;
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import com.google.common.collect.ImmutableList;
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import com.google.common.collect.ImmutableMap;
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import java.io.UnsupportedEncodingException;
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import java.net.URLDecoder;
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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.Map;
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import eu.siacs.conversations.xmpp.Jid;
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public class XmppUri {
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public static final String ACTION_JOIN = "join";
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public static final String ACTION_MESSAGE = "message";
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public static final String ACTION_REGISTER = "register";
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public static final String ACTION_ROSTER = "roster";
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public static final String PARAMETER_PRE_AUTH = "preauth";
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public static final String PARAMETER_IBR = "ibr";
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private static final String OMEMO_URI_PARAM = "omemo-sid-";
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protected Uri uri;
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protected String jid;
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private List<Fingerprint> fingerprints = new ArrayList<>();
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private Map<String, String> parameters = Collections.emptyMap();
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private boolean safeSource = true;
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public static final String INVITE_DOMAIN = "conversations.im";
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public XmppUri(final String uri) {
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try {
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parse(Uri.parse(uri));
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} catch (IllegalArgumentException e) {
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try {
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jid = Jid.ofEscaped(uri).asBareJid().toEscapedString();
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} catch (IllegalArgumentException e2) {
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jid = null;
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}
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}
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}
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public XmppUri(Uri uri) {
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parse(uri);
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}
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public XmppUri(Uri uri, boolean safeSource) {
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this.safeSource = safeSource;
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parse(uri);
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}
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private static Map<String, String> parseParameters(final String query, final char seperator) {
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final ImmutableMap.Builder<String, String> builder = new ImmutableMap.Builder<>();
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final String[] pairs = query == null ? new String[0] : query.split(String.valueOf(seperator));
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for (String pair : pairs) {
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final String[] parts = pair.split("=", 2);
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if (parts.length == 0) {
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continue;
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}
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final String key = parts[0].toLowerCase(Locale.US);
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final String value;
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if (parts.length == 2) {
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String decoded;
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try {
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decoded = URLDecoder.decode(parts[1], "UTF-8");
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} catch (UnsupportedEncodingException e) {
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decoded = "";
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}
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value = decoded;
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} else {
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value = "";
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}
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builder.put(key, value);
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}
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return builder.build();
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}
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private static List<Fingerprint> parseFingerprints(Map<String, String> parameters) {
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ImmutableList.Builder<Fingerprint> builder = new ImmutableList.Builder<>();
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for (Map.Entry<String, String> parameter : parameters.entrySet()) {
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final String key = parameter.getKey();
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final String value = parameter.getValue().toLowerCase(Locale.US);
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if (key.startsWith(OMEMO_URI_PARAM)) {
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try {
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final int id = Integer.parseInt(key.substring(OMEMO_URI_PARAM.length()));
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builder.add(new Fingerprint(FingerprintType.OMEMO, value, id));
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} catch (Exception e) {
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//ignoring invalid device id
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}
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} else if ("omemo".equals(key)) {
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builder.add(new Fingerprint(FingerprintType.OMEMO, value, 0));
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}
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}
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return builder.build();
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}
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public static String getFingerprintUri(final String base, final List<XmppUri.Fingerprint> fingerprints, char separator) {
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final StringBuilder builder = new StringBuilder(base);
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builder.append('?');
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for (int i = 0; i < fingerprints.size(); ++i) {
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XmppUri.FingerprintType type = fingerprints.get(i).type;
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if (type == XmppUri.FingerprintType.OMEMO) {
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builder.append(XmppUri.OMEMO_URI_PARAM);
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builder.append(fingerprints.get(i).deviceId);
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}
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builder.append('=');
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builder.append(fingerprints.get(i).fingerprint);
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if (i != fingerprints.size() - 1) {
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builder.append(separator);
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}
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}
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return builder.toString();
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}
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private static String lameUrlDecode(String url) {
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return url.replace("%23", "#").replace("%25", "%");
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}
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public static String lameUrlEncode(String url) {
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return url.replace("%", "%25").replace("#", "%23");
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}
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public boolean isSafeSource() {
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return safeSource;
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}
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protected void parse(final Uri uri) {
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if (uri == null) {
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return;
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}
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this.uri = uri;
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final String scheme = uri.getScheme();
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final String host = uri.getHost();
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List<String> segments = uri.getPathSegments();
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if ("https".equalsIgnoreCase(scheme) && INVITE_DOMAIN.equalsIgnoreCase(host)) {
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if (segments.size() >= 2 && segments.get(1).contains("@")) {
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// sample : https://conversations.im/i/foo@bar.com
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try {
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jid = Jid.ofEscaped(lameUrlDecode(segments.get(1))).toEscapedString();
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} catch (Exception e) {
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jid = null;
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}
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} else if (segments.size() >= 3) {
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// sample : https://conversations.im/i/foo/bar.com
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jid = segments.get(1) + "@" + segments.get(2);
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}
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if (segments.size() > 1 && "j".equalsIgnoreCase(segments.get(0))) {
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this.parameters = ImmutableMap.of(ACTION_JOIN, "");
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}
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final Map<String, String> parameters = parseParameters(uri.getQuery(), '&');
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this.fingerprints = parseFingerprints(parameters);
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} else if ("xmpp".equalsIgnoreCase(scheme)) {
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// sample: xmpp:foo@bar.com
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this.parameters = parseParameters(uri.getQuery(), ';');
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if (uri.getAuthority() != null) {
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jid = uri.getAuthority();
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} else {
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final String[] parts = uri.getSchemeSpecificPart().split("\\?");
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if (parts.length > 0) {
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jid = parts[0];
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} else {
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return;
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}
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}
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this.fingerprints = parseFingerprints(parameters);
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} else if ("imto".equalsIgnoreCase(scheme) && Arrays.asList("xmpp", "jabber").contains(uri.getHost())) {
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// sample: imto://xmpp/foo@bar.com
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try {
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jid = URLDecoder.decode(uri.getEncodedPath(), "UTF-8").split("/")[1].trim();
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} catch (final UnsupportedEncodingException ignored) {
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jid = null;
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}
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} else {
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jid = null;
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}
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}
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@Override
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@NonNull
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public String toString() {
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if (uri != null) {
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return uri.toString();
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}
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return "";
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}
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public boolean isAction(final String action) {
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return Collections2.transform(
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parameters.keySet(),
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s -> CharMatcher.inRange('a', 'z').or(CharMatcher.inRange('A', 'Z')).retainFrom(s)
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).contains(action);
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}
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public Jid getJid() {
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try {
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return this.jid == null ? null : Jid.ofEscaped(this.jid);
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} catch (IllegalArgumentException e) {
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return null;
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}
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}
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public boolean isValidJid() {
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if (jid == null) {
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return false;
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}
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try {
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Jid.ofEscaped(jid);
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return true;
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} catch (IllegalArgumentException e) {
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return false;
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}
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}
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public String getBody() {
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return parameters.get("body");
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}
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public String getName() {
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return parameters.get("name");
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}
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public String getParameter(String key) {
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return this.parameters.get(key);
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}
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public List<Fingerprint> getFingerprints() {
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return this.fingerprints;
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}
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public boolean hasFingerprints() {
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return fingerprints.size() > 0;
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}
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public enum FingerprintType {
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OMEMO
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}
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public static class Fingerprint {
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public final FingerprintType type;
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public final String fingerprint;
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final int deviceId;
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public Fingerprint(FingerprintType type, String fingerprint, int deviceId) {
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this.type = type;
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this.fingerprint = fingerprint;
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this.deviceId = deviceId;
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}
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@NonNull
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@Override
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public String toString() {
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return type.toString() + ": " + fingerprint + (deviceId != 0 ? " " + deviceId : "");
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}
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}
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}
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