conversations-classic/src/main/java/eu/siacs/conversations/utils/XmppUri.java

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package eu.siacs.conversations.utils;
import android.net.Uri;
import android.util.Log;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
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import java.util.ArrayList;
import java.util.List;
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import java.util.Locale;
import eu.siacs.conversations.Config;
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import rocks.xmpp.addr.Jid;
public class XmppUri {
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protected Uri uri;
protected String jid;
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protected List<Fingerprint> fingerprints = new ArrayList<>();
private String body;
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private String name;
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private String action;
protected boolean safeSource = true;
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public static final String OMEMO_URI_PARAM = "omemo-sid-";
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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 {
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jid = Jid.of(uri).asBareJid().toString();
} catch (IllegalArgumentException 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) {
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this.uri = uri;
String scheme = uri.getScheme();
String host = uri.getHost();
List<String> segments = uri.getPathSegments();
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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.of(lameUrlDecode(segments.get(1))).toString();
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} catch (Exception e) {
Log.d(Config.LOGTAG, "parsing failed ", e);
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jid = null;
}
} else if (segments.size() >= 3) {
// sample : https://conversations.im/i/foo/bar.com
jid = segments.get(1) + "@" + segments.get(2);
}
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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
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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 {
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String[] parts = uri.getSchemeSpecificPart().split("\\?");
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if (parts.length > 0) {
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jid = parts[0];
} else {
return;
}
}
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this.fingerprints = parseFingerprints(uri.getQuery());
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this.body = parseParameter("body", uri.getQuery());
this.name = parseParameter("name", uri.getQuery());
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} else if ("imto".equalsIgnoreCase(scheme)) {
// sample: imto://xmpp/foo@bar.com
try {
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jid = URLDecoder.decode(uri.getEncodedPath(), "UTF-8").split("/")[1].trim();
} catch (final UnsupportedEncodingException ignored) {
jid = null;
}
} else {
try {
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jid = Jid.of(uri.toString()).asBareJid().toString();
} catch (final IllegalArgumentException ignored) {
jid = null;
}
}
}
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public String toString() {
if (uri != null) {
return uri.toString();
}
return "";
}
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protected List<Fingerprint> parseFingerprints(String query) {
return parseFingerprints(query, ';');
}
protected List<Fingerprint> parseFingerprints(String query, char seperator) {
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List<Fingerprint> fingerprints = new ArrayList<>();
String[] pairs = query == null ? new String[0] : query.split(String.valueOf(seperator));
for (String pair : pairs) {
String[] parts = pair.split("=", 2);
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if (parts.length == 2) {
String key = parts[0].toLowerCase(Locale.US);
String value = parts[1].toLowerCase(Locale.US);
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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));
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} catch (Exception e) {
//ignoring invalid device id
}
}
}
}
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return fingerprints;
}
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protected String parseParameter(String key, String query) {
for (String pair : query == null ? new String[0] : query.split(";")) {
final String[] parts = pair.split("=", 2);
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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;
}
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private boolean hasAction(String query, String action) {
for (String pair : query == null ? new String[0] : query.split(";")) {
final String[] parts = pair.split("=", 2);
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if (parts.length == 1 && parts[0].equals(action)) {
return true;
}
}
return false;
}
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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.of(this.jid.toLowerCase());
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} catch (IllegalArgumentException e) {
return null;
}
}
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public boolean isJidValid() {
if (jid == null) {
return false;
}
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try {
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Jid.of(jid);
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return true;
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} catch (IllegalArgumentException e) {
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return false;
}
}
public String getBody() {
return body;
}
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public String getName() {
return name;
}
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public List<Fingerprint> getFingerprints() {
return this.fingerprints;
}
public boolean hasFingerprints() {
return fingerprints.size() > 0;
}
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public enum FingerprintType {
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OMEMO
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}
public static String getFingerprintUri(String base, List<XmppUri.Fingerprint> 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);
}
builder.append('=');
builder.append(fingerprints.get(i).fingerprint);
if (i != fingerprints.size() - 1) {
builder.append(seperator);
}
}
return builder.toString();
}
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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) : "");
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}
}
public static String lameUrlDecode(String url) {
return url.replace("%23", "#").replace("%25", "%");
}
public static String lameUrlEncode(String url) {
return url.replace("%", "%25").replace("#", "%23");
}
}