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 boolean muc;
18 protected List<Fingerprint> fingerprints = new ArrayList<>();
19 private String body;
20 protected boolean safeSource = true;
21
22 public static final String OMEMO_URI_PARAM = "omemo-sid-";
23 public static final String OTR_URI_PARAM = "otr-fingerprint";
24
25 public XmppUri(String uri) {
26 try {
27 parse(Uri.parse(uri));
28 } catch (IllegalArgumentException e) {
29 try {
30 jid = Jid.fromString(uri).toBareJid().toString();
31 } catch (InvalidJidException e2) {
32 jid = null;
33 }
34 }
35 }
36
37 public XmppUri(Uri uri) {
38 parse(uri);
39 }
40
41 public XmppUri(Uri uri, boolean safeSource) {
42 this.safeSource = safeSource;
43 parse(uri);
44 }
45
46 public boolean isSafeSource() {
47 return safeSource;
48 }
49
50 protected void parse(Uri uri) {
51 String scheme = uri.getScheme();
52 String host = uri.getHost();
53 List<String> segments = uri.getPathSegments();
54 if ("https".equalsIgnoreCase(scheme) && "conversations.im".equalsIgnoreCase(host)) {
55 if (segments.size() >= 2 && segments.get(1).contains("@")) {
56 // sample : https://conversations.im/i/foo@bar.com
57 try {
58 jid = Jid.fromString(segments.get(1)).toString();
59 } catch (Exception e) {
60 jid = null;
61 }
62 } else if (segments.size() >= 3) {
63 // sample : https://conversations.im/i/foo/bar.com
64 jid = segments.get(1) + "@" + segments.get(2);
65 }
66 muc = segments.size() > 1 && "j".equalsIgnoreCase(segments.get(0));
67 } else if ("xmpp".equalsIgnoreCase(scheme)) {
68 // sample: xmpp:foo@bar.com
69 muc = isMuc(uri.getQuery());
70 if (uri.getAuthority() != null) {
71 jid = uri.getAuthority();
72 } else {
73 jid = uri.getSchemeSpecificPart().split("\\?")[0];
74 }
75 this.fingerprints = parseFingerprints(uri.getQuery());
76 this.body = parseBody(uri.getQuery());
77 } else if ("imto".equalsIgnoreCase(scheme)) {
78 // sample: imto://xmpp/foo@bar.com
79 try {
80 jid = URLDecoder.decode(uri.getEncodedPath(), "UTF-8").split("/")[1];
81 } catch (final UnsupportedEncodingException ignored) {
82 jid = null;
83 }
84 } else {
85 try {
86 jid = Jid.fromString(uri.toString()).toBareJid().toString();
87 } catch (final InvalidJidException ignored) {
88 jid = null;
89 }
90 }
91 }
92
93 protected List<Fingerprint> parseFingerprints(String query) {
94 return parseFingerprints(query,';');
95 }
96
97 protected List<Fingerprint> parseFingerprints(String query, char seperator) {
98 List<Fingerprint> fingerprints = new ArrayList<>();
99 String[] pairs = query == null ? new String[0] : query.split(String.valueOf(seperator));
100 for(String pair : pairs) {
101 String[] parts = pair.split("=",2);
102 if (parts.length == 2) {
103 String key = parts[0].toLowerCase(Locale.US);
104 String value = parts[1].toLowerCase(Locale.US);
105 if (OTR_URI_PARAM.equals(key)) {
106 fingerprints.add(new Fingerprint(FingerprintType.OTR,value));
107 }
108 if (key.startsWith(OMEMO_URI_PARAM)) {
109 try {
110 int id = Integer.parseInt(key.substring(OMEMO_URI_PARAM.length()));
111 fingerprints.add(new Fingerprint(FingerprintType.OMEMO,value,id));
112 } catch (Exception e) {
113 //ignoring invalid device id
114 }
115 }
116 }
117 }
118 return fingerprints;
119 }
120
121 protected String parseBody(String query) {
122 for(String pair : query == null ? new String[0] : query.split(";")) {
123 final String[] parts = pair.split("=",2);
124 if (parts.length == 2 && "body".equals(parts[0].toLowerCase(Locale.US))) {
125 try {
126 return URLDecoder.decode(parts[1],"UTF-8");
127 } catch (UnsupportedEncodingException e) {
128 return null;
129 }
130 }
131 }
132 return null;
133 }
134
135 protected boolean isMuc(String query) {
136 for(String pair : query == null ? new String[0] : query.split(";")) {
137 final String[] parts = pair.split("=",2);
138 if (parts.length == 1 && "join".equals(parts[0])) {
139 return true;
140 }
141 }
142 return false;
143 }
144
145 public Jid getJid() {
146 try {
147 return this.jid == null ? null :Jid.fromString(this.jid.toLowerCase());
148 } catch (InvalidJidException e) {
149 return null;
150 }
151 }
152
153 public String getBody() {
154 return body;
155 }
156
157 public List<Fingerprint> getFingerprints() {
158 return this.fingerprints;
159 }
160
161 public boolean hasFingerprints() {
162 return fingerprints.size() > 0;
163 }
164 public enum FingerprintType {
165 OMEMO,
166 OTR
167 }
168
169 public static class Fingerprint {
170 public final FingerprintType type;
171 public final String fingerprint;
172 public final int deviceId;
173
174 public Fingerprint(FingerprintType type, String fingerprint) {
175 this(type, fingerprint, 0);
176 }
177
178 public Fingerprint(FingerprintType type, String fingerprint, int deviceId) {
179 this.type = type;
180 this.fingerprint = fingerprint;
181 this.deviceId = deviceId;
182 }
183
184 @Override
185 public String toString() {
186 return type.toString()+": "+fingerprint+(deviceId != 0 ? " "+String.valueOf(deviceId) : "");
187 }
188 }
189}