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