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-rw-r--r--src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java84
1 files changed, 80 insertions, 4 deletions
diff --git a/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java b/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java
index 963464402..853e75aac 100644
--- a/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java
+++ b/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java
@@ -1,26 +1,41 @@
package eu.siacs.conversations.entities;
-import java.util.List;
+import android.content.ContentValues;
+import android.util.Base64;
+import java.io.UnsupportedEncodingException;
+import java.lang.Comparable;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
import eu.siacs.conversations.xml.Element;
import eu.siacs.conversations.xmpp.stanzas.IqPacket;
public class ServiceDiscoveryResult {
- public static class Identity {
+
+ protected static String blankNull(String s) {
+ return s == null ? "" : s;
+ }
+
+ public static class Identity implements Comparable {
protected final String category;
protected final String type;
+ protected final String lang;
protected final String name;
- public Identity(final String category, final String type, final String name) {
+ public Identity(final String category, final String type, final String lang, final String name) {
this.category = category;
this.type = type;
+ this.lang = lang;
this.name = name;
}
public Identity(final Element el) {
this.category = el.getAttribute("category");
this.type = el.getAttribute("type");
+ this.lang = el.getAttribute("xml:lang");
this.name = el.getAttribute("name");
}
@@ -32,9 +47,29 @@ public class ServiceDiscoveryResult {
return this.type;
}
+ public String getLang() {
+ return this.lang;
+ }
+
public String getName() {
return this.name;
}
+
+ public int compareTo(Object other) {
+ Identity o = (Identity)other;
+ int r = blankNull(this.getCategory()).compareTo(blankNull(o.getCategory()));
+ if(r == 0) {
+ r = blankNull(this.getType()).compareTo(blankNull(o.getType()));
+ }
+ if(r == 0) {
+ r = blankNull(this.getLang()).compareTo(blankNull(o.getLang()));
+ }
+ if(r == 0) {
+ r = blankNull(this.getName()).compareTo(blankNull(o.getName()));
+ }
+
+ return r;
+ }
}
protected final List<Identity> identities;
@@ -58,7 +93,9 @@ public class ServiceDiscoveryResult {
identities.add(id);
}
} else if (element.getName().equals("feature")) {
- features.add(element.getAttribute("var"));
+ if (element.getAttribute("var") != null) {
+ features.add(element.getAttribute("var"));
+ }
}
}
}
@@ -81,4 +118,43 @@ public class ServiceDiscoveryResult {
return false;
}
+
+ public byte[] getCapHash() {
+ StringBuilder s = new StringBuilder();
+
+ List<Identity> identities = this.getIdentities();
+ Collections.sort(identities);
+
+ for(Identity id : identities) {
+ s.append(
+ blankNull(id.getCategory()) + "/" +
+ blankNull(id.getType()) + "/" +
+ blankNull(id.getLang()) + "/" +
+ blankNull(id.getName()) + "<"
+ );
+ }
+
+ List<String> features = this.getFeatures();
+ Collections.sort(features);
+
+ for (String feature : features) {
+ s.append(feature + "<");
+ }
+
+ // TODO: data forms?
+
+ MessageDigest md;
+ try {
+ md = MessageDigest.getInstance("SHA-1");
+ } catch (NoSuchAlgorithmException e) {
+ return null;
+ }
+
+ try {
+ return md.digest(s.toString().getBytes("UTF-8"));
+ } catch(UnsupportedEncodingException e) {
+ return null;
+ }
+ }
+
}