package eu.siacs.conversations.utils; import android.net.Uri; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.util.ArrayList; import java.util.List; import java.util.Locale; import eu.siacs.conversations.xmpp.jid.InvalidJidException; import eu.siacs.conversations.xmpp.jid.Jid; public class XmppUri { protected Uri uri; protected String jid; protected List fingerprints = new ArrayList<>(); private String body; private String name; private String action; protected boolean safeSource = true; public static final String OMEMO_URI_PARAM = "omemo-sid-"; public static final String OTR_URI_PARAM = "otr-fingerprint"; public static final String ACTION_JOIN = "join"; public static final String ACTION_MESSAGE = "message"; public XmppUri(String uri) { try { parse(Uri.parse(uri)); } catch (IllegalArgumentException e) { try { jid = Jid.fromString(uri).toBareJid().toString(); } catch (InvalidJidException e2) { jid = null; } } } public XmppUri(Uri uri) { parse(uri); } public XmppUri(Uri uri, boolean safeSource) { this.safeSource = safeSource; parse(uri); } public boolean isSafeSource() { return safeSource; } protected void parse(Uri uri) { this.uri = uri; String scheme = uri.getScheme(); String host = uri.getHost(); List segments = uri.getPathSegments(); if ("https".equalsIgnoreCase(scheme) && "conversations.im".equalsIgnoreCase(host)) { if (segments.size() >= 2 && segments.get(1).contains("@")) { // sample : https://conversations.im/i/foo@bar.com try { jid = Jid.fromString(segments.get(1)).toString(); } catch (Exception e) { jid = null; } } else if (segments.size() >= 3) { // sample : https://conversations.im/i/foo/bar.com jid = segments.get(1) + "@" + segments.get(2); } if (segments.size() > 1 && "j".equalsIgnoreCase(segments.get(0))) { action = ACTION_JOIN; } fingerprints = parseFingerprints(uri.getQuery(),'&'); } else if ("xmpp".equalsIgnoreCase(scheme)) { // sample: xmpp:foo@bar.com final String query = uri.getQuery(); if (hasAction(query, ACTION_JOIN)) { this.action = ACTION_JOIN; } else if (hasAction(query, ACTION_MESSAGE)) { this.action = ACTION_MESSAGE; } if (uri.getAuthority() != null) { jid = uri.getAuthority(); } else { String[] parts = uri.getSchemeSpecificPart().split("\\?"); if (parts.length > 0) { jid = parts[0]; } else { return; } } this.fingerprints = parseFingerprints(uri.getQuery()); this.body = parseParameter("body", uri.getQuery()); this.name = parseParameter("name", uri.getQuery()); } else if ("imto".equalsIgnoreCase(scheme)) { // sample: imto://xmpp/foo@bar.com try { jid = URLDecoder.decode(uri.getEncodedPath(), "UTF-8").split("/")[1].trim(); } catch (final UnsupportedEncodingException ignored) { jid = null; } } else { try { jid = Jid.fromString(uri.toString()).toBareJid().toString(); } catch (final InvalidJidException ignored) { jid = null; } } } public String toString() { if (uri != null) { return uri.toString(); } return ""; } protected List parseFingerprints(String query) { return parseFingerprints(query,';'); } protected List parseFingerprints(String query, char seperator) { List fingerprints = new ArrayList<>(); String[] pairs = query == null ? new String[0] : query.split(String.valueOf(seperator)); for(String pair : pairs) { String[] parts = pair.split("=",2); if (parts.length == 2) { String key = parts[0].toLowerCase(Locale.US); String value = parts[1].toLowerCase(Locale.US); if (OTR_URI_PARAM.equals(key)) { fingerprints.add(new Fingerprint(FingerprintType.OTR,value)); } if (key.startsWith(OMEMO_URI_PARAM)) { try { int id = Integer.parseInt(key.substring(OMEMO_URI_PARAM.length())); fingerprints.add(new Fingerprint(FingerprintType.OMEMO,value,id)); } catch (Exception e) { //ignoring invalid device id } } } } return fingerprints; } protected String parseParameter(String key, String query) { for(String pair : query == null ? new String[0] : query.split(";")) { final String[] parts = pair.split("=",2); if (parts.length == 2 && key.equals(parts[0].toLowerCase(Locale.US))) { try { return URLDecoder.decode(parts[1],"UTF-8"); } catch (UnsupportedEncodingException e) { return null; } } } return null; } private boolean hasAction(String query, String action) { for(String pair : query == null ? new String[0] : query.split(";")) { final String[] parts = pair.split("=",2); if (parts.length == 1 && parts[0].equals(action)) { return true; } } return false; } public boolean isAction(final String action) { if (this.action == null) { return false; } return this.action.equals(action); } public Jid getJid() { try { return this.jid == null ? null :Jid.fromString(this.jid.toLowerCase()); } catch (InvalidJidException e) { return null; } } public boolean isJidValid() { try { Jid.fromString(jid); return true; } catch (InvalidJidException e) { return false; } } public String getBody() { return body; } public String getName() { return name; } public List getFingerprints() { return this.fingerprints; } public boolean hasFingerprints() { return fingerprints.size() > 0; } public enum FingerprintType { OMEMO, OTR } public static String getFingerprintUri(String base, List fingerprints, char seperator) { StringBuilder builder = new StringBuilder(base); builder.append('?'); for(int i = 0; i < fingerprints.size(); ++i) { XmppUri.FingerprintType type = fingerprints.get(i).type; if (type == XmppUri.FingerprintType.OMEMO) { builder.append(XmppUri.OMEMO_URI_PARAM); builder.append(fingerprints.get(i).deviceId); } else if (type == XmppUri.FingerprintType.OTR) { builder.append(XmppUri.OTR_URI_PARAM); } builder.append('='); builder.append(fingerprints.get(i).fingerprint); if (i != fingerprints.size() -1) { builder.append(seperator); } } return builder.toString(); } public static class Fingerprint { public final FingerprintType type; public final String fingerprint; public final int deviceId; public Fingerprint(FingerprintType type, String fingerprint) { this(type, fingerprint, 0); } public Fingerprint(FingerprintType type, String fingerprint, int deviceId) { this.type = type; this.fingerprint = fingerprint; this.deviceId = deviceId; } @Override public String toString() { return type.toString()+": "+fingerprint+(deviceId != 0 ? " "+String.valueOf(deviceId) : ""); } } }