1package eu.siacs.conversations.parser;
2
3import eu.siacs.conversations.entities.Account;
4import eu.siacs.conversations.entities.Contact;
5import eu.siacs.conversations.entities.Conversation;
6import eu.siacs.conversations.entities.MucOptions;
7import eu.siacs.conversations.services.XmppConnectionService;
8import eu.siacs.conversations.xml.Element;
9import eu.siacs.conversations.xmpp.Jid;
10import eu.siacs.conversations.xmpp.XmppConnection;
11import im.conversations.android.xmpp.model.stanza.Stanza;
12import java.text.ParseException;
13import java.text.SimpleDateFormat;
14import java.util.ArrayList;
15import java.util.Date;
16import java.util.List;
17import java.util.Locale;
18
19public abstract class AbstractParser extends XmppConnection.Delegate {
20
21 protected final XmppConnectionService mXmppConnectionService;
22
23 protected AbstractParser(final XmppConnectionService service, final XmppConnection connection) {
24 super(service.getApplicationContext(), connection);
25 this.mXmppConnectionService = service;
26 }
27
28 public static Long parseTimestamp(Element element, Long d) {
29 return parseTimestamp(element, d, false);
30 }
31
32 public static Long parseTimestamp(Element element, Long d, boolean ignoreCsiAndSm) {
33 long min = Long.MAX_VALUE;
34 boolean returnDefault = true;
35 final Jid to;
36 if (ignoreCsiAndSm && element instanceof Stanza stanza) {
37 to = stanza.getTo();
38 } else {
39 to = null;
40 }
41 for (Element child : element.getChildren()) {
42 if ("delay".equals(child.getName()) && "urn:xmpp:delay".equals(child.getNamespace())) {
43 final Jid f =
44 to == null
45 ? null
46 : Jid.Invalid.getNullForInvalid(child.getAttributeAsJid("from"));
47 if (f != null && (to.asBareJid().equals(f) || to.getDomain().equals(f))) {
48 continue;
49 }
50 final String stamp = child.getAttribute("stamp");
51 if (stamp != null) {
52 try {
53 min = Math.min(min, AbstractParser.parseTimestamp(stamp));
54 returnDefault = false;
55 } catch (Throwable t) {
56 // ignore
57 }
58 }
59 }
60 }
61 if (returnDefault) {
62 return d;
63 } else {
64 return min;
65 }
66 }
67
68 public static long parseTimestamp(Element element) {
69 return parseTimestamp(element, System.currentTimeMillis());
70 }
71
72 public static long parseTimestamp(String timestamp) throws ParseException {
73 timestamp = timestamp.replace("Z", "+0000");
74 SimpleDateFormat dateFormat;
75 long ms;
76 if (timestamp.length() >= 25 && timestamp.charAt(19) == '.') {
77 String millis = timestamp.substring(19, timestamp.length() - 5);
78 try {
79 double fractions = Double.parseDouble("0" + millis);
80 ms = Math.round(1000 * fractions);
81 } catch (NumberFormatException e) {
82 ms = 0;
83 }
84 } else {
85 ms = 0;
86 }
87 timestamp = timestamp.substring(0, 19) + timestamp.substring(timestamp.length() - 5);
88 dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ", Locale.US);
89 return Math.min(dateFormat.parse(timestamp).getTime() + ms, System.currentTimeMillis());
90 }
91
92 public static long getTimestamp(final String input) throws ParseException {
93 if (input == null) {
94 throw new IllegalArgumentException("timestamp should not be null");
95 }
96 final String timestamp = input.replace("Z", "+0000");
97 final SimpleDateFormat simpleDateFormat =
98 new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ", Locale.US);
99 final long milliseconds = getMilliseconds(timestamp);
100 final String formatted =
101 timestamp.substring(0, 19) + timestamp.substring(timestamp.length() - 5);
102 final Date date = simpleDateFormat.parse(formatted);
103 if (date == null) {
104 throw new IllegalArgumentException("Date was null");
105 }
106 return date.getTime() + milliseconds;
107 }
108
109 private static long getMilliseconds(final String timestamp) {
110 if (timestamp.length() >= 25 && timestamp.charAt(19) == '.') {
111 final String millis = timestamp.substring(19, timestamp.length() - 5);
112 try {
113 double fractions = Double.parseDouble("0" + millis);
114 return Math.round(1000 * fractions);
115 } catch (NumberFormatException e) {
116 return 0;
117 }
118 } else {
119 return 0;
120 }
121 }
122
123 protected void updateLastseen(final Account account, final Jid from) {
124 final Contact contact = account.getRoster().getContact(from);
125 contact.setLastResource(from.isBareJid() ? "" : from.getResource());
126 }
127
128 protected static String avatarData(Element items) {
129 Element item = items.findChild("item");
130 if (item == null) {
131 return null;
132 }
133 return item.findChildContent("data", "urn:xmpp:avatar:data");
134 }
135
136 public static MucOptions.User parseItem(final Conversation conference, final Element item) {
137 return parseItem(conference, item, null);
138 }
139
140 public static MucOptions.User parseItem(
141 final Conversation conference, Element item, Jid fullJid) {
142 final String local = conference.getJid().getLocal();
143 final String domain = conference.getJid().getDomain().toString();
144 String affiliation = item.getAttribute("affiliation");
145 String role = item.getAttribute("role");
146 String nick = item.getAttribute("nick");
147 if (nick != null && fullJid == null) {
148 try {
149 fullJid = Jid.of(local, domain, nick);
150 } catch (IllegalArgumentException e) {
151 fullJid = null;
152 }
153 }
154 final Jid realJid = item.getAttributeAsJid("jid");
155 MucOptions.User user = new MucOptions.User(conference.getMucOptions(), fullJid);
156 if (Jid.Invalid.isValid(realJid)) {
157 user.setRealJid(realJid);
158 }
159 // user.setAffiliation(affiliation);
160 // user.setRole(role);
161 return user;
162 }
163
164 public static String extractErrorMessage(final Element packet) {
165 final Element error = packet.findChild("error");
166 if (error != null && error.getChildren().size() > 0) {
167 final List<String> errorNames = orderedElementNames(error.getChildren());
168 final String text = error.findChildContent("text");
169 if (text != null && !text.trim().isEmpty()) {
170 return prefixError(errorNames) + text;
171 } else if (errorNames.size() > 0) {
172 return prefixError(errorNames) + errorNames.get(0).replace("-", " ");
173 }
174 }
175 return null;
176 }
177
178 public static String errorMessage(Element packet) {
179 final Element error = packet.findChild("error");
180 if (error != null && error.getChildren().size() > 0) {
181 final List<String> errorNames = orderedElementNames(error.getChildren());
182 final String text = error.findChildContent("text");
183 if (text != null && !text.trim().isEmpty()) {
184 return text;
185 } else if (errorNames.size() > 0) {
186 return errorNames.get(0).replace("-", " ");
187 }
188 }
189 return null;
190 }
191
192 private static String prefixError(List<String> errorNames) {
193 if (errorNames.size() > 0) {
194 return errorNames.get(0) + '\u001f';
195 }
196 return "";
197 }
198
199 private static List<String> orderedElementNames(List<Element> children) {
200 List<String> names = new ArrayList<>();
201 for (Element child : children) {
202 final String name = child.getName();
203 if (name != null && !name.equals("text")) {
204 if ("urn:ietf:params:xml:ns:xmpp-stanzas".equals(child.getNamespace())) {
205 names.add(name);
206 } else {
207 names.add(0, name);
208 }
209 }
210 }
211 return names;
212 }
213}