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