1package eu.siacs.conversations.utils;
2
3import android.net.Uri;
4import android.util.Log;
5
6import java.io.UnsupportedEncodingException;
7import java.net.URLDecoder;
8import java.util.ArrayList;
9import java.util.List;
10import java.util.Locale;
11
12import eu.siacs.conversations.Config;
13import rocks.xmpp.addr.Jid;
14
15public class XmppUri {
16
17 protected Uri uri;
18 protected String jid;
19 private List<Fingerprint> fingerprints = new ArrayList<>();
20 private String body;
21 private String name;
22 private String action;
23 private boolean safeSource = true;
24
25 private static final String OMEMO_URI_PARAM = "omemo-sid-";
26
27 public static final String ACTION_JOIN = "join";
28 public static final String ACTION_MESSAGE = "message";
29
30 public XmppUri(String uri) {
31 try {
32 parse(Uri.parse(uri));
33 } catch (IllegalArgumentException e) {
34 try {
35 jid = Jid.of(uri).asBareJid().toString();
36 } catch (IllegalArgumentException e2) {
37 jid = null;
38 }
39 }
40 }
41
42 public XmppUri(Uri uri) {
43 parse(uri);
44 }
45
46 public XmppUri(Uri uri, boolean safeSource) {
47 this.safeSource = safeSource;
48 parse(uri);
49 }
50
51 public boolean isSafeSource() {
52 return safeSource;
53 }
54
55 protected void parse(Uri uri) {
56 this.uri = uri;
57 String scheme = uri.getScheme();
58 String host = uri.getHost();
59 List<String> segments = uri.getPathSegments();
60 if ("https".equalsIgnoreCase(scheme) && "conversations.im".equalsIgnoreCase(host)) {
61 if (segments.size() >= 2 && segments.get(1).contains("@")) {
62 // sample : https://conversations.im/i/foo@bar.com
63 try {
64 jid = Jid.of(lameUrlDecode(segments.get(1))).toString();
65 } catch (Exception e) {
66 Log.d(Config.LOGTAG, "parsing failed ", e);
67 jid = null;
68 }
69 } else if (segments.size() >= 3) {
70 // sample : https://conversations.im/i/foo/bar.com
71 jid = segments.get(1) + "@" + segments.get(2);
72 }
73 if (segments.size() > 1 && "j".equalsIgnoreCase(segments.get(0))) {
74 action = ACTION_JOIN;
75 }
76 fingerprints = parseFingerprints(uri.getQuery(), '&');
77 } else if ("xmpp".equalsIgnoreCase(scheme)) {
78 // sample: xmpp:foo@bar.com
79
80 final String query = uri.getQuery();
81
82 if (hasAction(query, ACTION_JOIN)) {
83 this.action = ACTION_JOIN;
84 } else if (hasAction(query, ACTION_MESSAGE)) {
85 this.action = ACTION_MESSAGE;
86 }
87
88 if (uri.getAuthority() != null) {
89 jid = uri.getAuthority();
90 } else {
91 String[] parts = uri.getSchemeSpecificPart().split("\\?");
92 if (parts.length > 0) {
93 jid = parts[0];
94 } else {
95 return;
96 }
97 }
98 this.fingerprints = parseFingerprints(uri.getQuery());
99 this.body = parseParameter("body", uri.getQuery());
100 this.name = parseParameter("name", uri.getQuery());
101 } else if ("imto".equalsIgnoreCase(scheme)) {
102 // sample: imto://xmpp/foo@bar.com
103 try {
104 jid = URLDecoder.decode(uri.getEncodedPath(), "UTF-8").split("/")[1].trim();
105 } catch (final UnsupportedEncodingException ignored) {
106 jid = null;
107 }
108 } else {
109 try {
110 jid = Jid.of(uri.toString()).asBareJid().toString();
111 } catch (final IllegalArgumentException ignored) {
112 jid = null;
113 }
114 }
115 }
116
117 public String toString() {
118 if (uri != null) {
119 return uri.toString();
120 }
121 return "";
122 }
123
124 private List<Fingerprint> parseFingerprints(String query) {
125 return parseFingerprints(query, ';');
126 }
127
128 private List<Fingerprint> parseFingerprints(String query, char seperator) {
129 List<Fingerprint> fingerprints = new ArrayList<>();
130 String[] pairs = query == null ? new String[0] : query.split(String.valueOf(seperator));
131 for (String pair : pairs) {
132 String[] parts = pair.split("=", 2);
133 if (parts.length == 2) {
134 String key = parts[0].toLowerCase(Locale.US);
135 String value = parts[1].toLowerCase(Locale.US);
136 if (key.startsWith(OMEMO_URI_PARAM)) {
137 try {
138 int id = Integer.parseInt(key.substring(OMEMO_URI_PARAM.length()));
139 fingerprints.add(new Fingerprint(FingerprintType.OMEMO, value, id));
140 } catch (Exception e) {
141 //ignoring invalid device id
142 }
143 }
144 }
145 }
146 return fingerprints;
147 }
148
149 private String parseParameter(String key, String query) {
150 for (String pair : query == null ? new String[0] : query.split(";")) {
151 final String[] parts = pair.split("=", 2);
152 if (parts.length == 2 && key.equals(parts[0].toLowerCase(Locale.US))) {
153 try {
154 return URLDecoder.decode(parts[1], "UTF-8");
155 } catch (UnsupportedEncodingException e) {
156 return null;
157 }
158 }
159 }
160 return null;
161 }
162
163 private boolean hasAction(String query, String action) {
164 for (String pair : query == null ? new String[0] : query.split(";")) {
165 final String[] parts = pair.split("=", 2);
166 if (parts.length == 1 && parts[0].equals(action)) {
167 return true;
168 }
169 }
170 return false;
171 }
172
173 public boolean isAction(final String action) {
174 return this.action != null && this.action.equals(action);
175
176 }
177
178 public Jid getJid() {
179 try {
180 return this.jid == null ? null : Jid.of(this.jid.toLowerCase());
181 } catch (IllegalArgumentException e) {
182 return null;
183 }
184 }
185
186 public boolean isJidValid() {
187 if (jid == null) {
188 return false;
189 }
190 try {
191 Jid.of(jid);
192 return true;
193 } catch (IllegalArgumentException e) {
194 return false;
195 }
196 }
197
198 public String getBody() {
199 return body;
200 }
201
202 public String getName() {
203 return name;
204 }
205
206 public List<Fingerprint> getFingerprints() {
207 return this.fingerprints;
208 }
209
210 public boolean hasFingerprints() {
211 return fingerprints.size() > 0;
212 }
213
214 public enum FingerprintType {
215 OMEMO
216 }
217
218 public static String getFingerprintUri(String base, List<XmppUri.Fingerprint> fingerprints, char seperator) {
219 StringBuilder builder = new StringBuilder(base);
220 builder.append('?');
221 for (int i = 0; i < fingerprints.size(); ++i) {
222 XmppUri.FingerprintType type = fingerprints.get(i).type;
223 if (type == XmppUri.FingerprintType.OMEMO) {
224 builder.append(XmppUri.OMEMO_URI_PARAM);
225 builder.append(fingerprints.get(i).deviceId);
226 }
227 builder.append('=');
228 builder.append(fingerprints.get(i).fingerprint);
229 if (i != fingerprints.size() - 1) {
230 builder.append(seperator);
231 }
232 }
233 return builder.toString();
234 }
235
236 public static class Fingerprint {
237 public final FingerprintType type;
238 public final String fingerprint;
239 final int deviceId;
240
241 public Fingerprint(FingerprintType type, String fingerprint, int deviceId) {
242 this.type = type;
243 this.fingerprint = fingerprint;
244 this.deviceId = deviceId;
245 }
246
247 @Override
248 public String toString() {
249 return type.toString() + ": " + fingerprint + (deviceId != 0 ? " " + String.valueOf(deviceId) : "");
250 }
251 }
252
253 private static String lameUrlDecode(String url) {
254 return url.replace("%23", "#").replace("%25", "%");
255 }
256
257 public static String lameUrlEncode(String url) {
258 return url.replace("%", "%25").replace("#", "%23");
259 }
260}