Merge branch 'disco-caps' of https://github.com/singpolyma/Conversations into singpolyma-disco-caps

4 files changed, 316 insertions, 47 deletions

diff --git a/src/main/java/eu/siacs/conversations/entities/Contact.java b/src/main/java/eu/siacs/conversations/entities/Contact.java
index b338656ba..aba9a8091 100644
--- a/src/main/java/eu/siacs/conversations/entities/Contact.java
+++ b/src/main/java/eu/siacs/conversations/entities/Contact.java
@@ -136,17 +136,17 @@ public class Contact implements ListItem, Blockable {
 			tags.add(new Tag(group, UIHelper.getColorForName(group)));
 		}
 		switch (getMostAvailableStatus()) {
-			case Presences.CHAT:
-			case Presences.ONLINE:
+			case CHAT:
+			case ONLINE:
 				tags.add(new Tag("online", 0xff259b24));
 				break;
-			case Presences.AWAY:
+			case AWAY:
 				tags.add(new Tag("away", 0xffff9800));
 				break;
-			case Presences.XA:
+			case XA:
 				tags.add(new Tag("not available", 0xfff44336));
 				break;
-			case Presences.DND:
+			case DND:
 				tags.add(new Tag("dnd", 0xfff44336));
 				break;
 		}
@@ -226,8 +226,8 @@ public class Contact implements ListItem, Blockable {
 		this.presences = pres;
 	}
 
-	public void updatePresence(final String resource, final int status) {
-		this.presences.updatePresence(resource, status);
+	public void updatePresence(final String resource, final Presence presence) {
+		this.presences.updatePresence(resource, presence);
 	}
 
 	public void removePresence(final String resource) {
@@ -239,8 +239,13 @@ public class Contact implements ListItem, Blockable {
 		this.resetOption(Options.PENDING_SUBSCRIPTION_REQUEST);
 	}
 
-	public int getMostAvailableStatus() {
-		return this.presences.getMostAvailableStatus();
+	public Presence.Status getMostAvailableStatus() {
+		Presence p = this.presences.getMostAvailablePresence();
+		if (p == null) {
+			return Presence.Status.OFFLINE;
+		}
+
+		return p.getStatus();
 	}
 
 	public boolean setPhotoUri(String uri) {
diff --git a/src/main/java/eu/siacs/conversations/entities/Presence.java b/src/main/java/eu/siacs/conversations/entities/Presence.java
new file mode 100644
index 000000000..d31bb69d5
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/Presence.java
@@ -0,0 +1,52 @@
+package eu.siacs.conversations.entities;
+
+import java.lang.Comparable;
+
+import eu.siacs.conversations.xml.Element;
+
+public class Presence implements Comparable {
+
+	public enum Status {
+		CHAT, ONLINE, AWAY, XA, DND, OFFLINE;
+
+		public String toShowString() {
+			switch(this) {
+				case CHAT: return "chat";
+				case AWAY: return "away";
+				case XA:   return "xa";
+				case DND:  return "dnd";
+			}
+
+			return null;
+		}
+	}
+
+	protected final Status status;
+	protected final ServiceDiscoveryResult disco;
+
+	public Presence(Element show, ServiceDiscoveryResult disco) {
+		this.disco = disco;
+
+		if ((show == null) || (show.getContent() == null)) {
+			this.status = Status.ONLINE;
+		} else if (show.getContent().equals("away")) {
+			this.status = Status.AWAY;
+		} else if (show.getContent().equals("xa")) {
+			this.status = Status.XA;
+		} else if (show.getContent().equals("chat")) {
+			this.status = Status.CHAT;
+		} else if (show.getContent().equals("dnd")) {
+			this.status = Status.DND;
+		} else {
+			this.status = Status.OFFLINE;
+		}
+	}
+
+	public int compareTo(Object other) {
+		return this.status.compareTo(((Presence)other).status);
+	}
+
+	public Status getStatus() {
+		return this.status;
+	}
+}
diff --git a/src/main/java/eu/siacs/conversations/entities/Presences.java b/src/main/java/eu/siacs/conversations/entities/Presences.java
index 4729a11b9..813eda7a9 100644
--- a/src/main/java/eu/siacs/conversations/entities/Presences.java
+++ b/src/main/java/eu/siacs/conversations/entities/Presences.java
@@ -1,29 +1,21 @@
 package eu.siacs.conversations.entities;
 
+import java.util.Collections;
 import java.util.Hashtable;
 import java.util.Iterator;
-import java.util.Map.Entry;
 
 import eu.siacs.conversations.xml.Element;
 
 public class Presences {
+	private final Hashtable<String, Presence> presences = new Hashtable<>();
 
-	public static final int CHAT = -1;
-	public static final int ONLINE = 0;
-	public static final int AWAY = 1;
-	public static final int XA = 2;
-	public static final int DND = 3;
-	public static final int OFFLINE = 4;
-
-	private final Hashtable<String, Integer> presences = new Hashtable<>();
-
-	public Hashtable<String, Integer> getPresences() {
+	public Hashtable<String, Presence> getPresences() {
 		return this.presences;
 	}
 
-	public void updatePresence(String resource, int status) {
+	public void updatePresence(String resource, Presence presence) {
 		synchronized (this.presences) {
-			this.presences.put(resource, status);
+			this.presences.put(resource, presence);
 		}
 	}
 
@@ -39,32 +31,10 @@ public class Presences {
 		}
 	}
 
-	public int getMostAvailableStatus() {
-		int status = OFFLINE;
+	public Presence getMostAvailablePresence() {
 		synchronized (this.presences) {
-			Iterator<Entry<String, Integer>> it = presences.entrySet().iterator();
-			while (it.hasNext()) {
-				Entry<String, Integer> entry = it.next();
-				if (entry.getValue() < status)
-					status = entry.getValue();
-			}
-		}
-		return status;
-	}
-
-	public static int parseShow(Element show) {
-		if ((show == null) || (show.getContent() == null)) {
-			return Presences.ONLINE;
-		} else if (show.getContent().equals("away")) {
-			return Presences.AWAY;
-		} else if (show.getContent().equals("xa")) {
-			return Presences.XA;
-		} else if (show.getContent().equals("chat")) {
-			return Presences.CHAT;
-		} else if (show.getContent().equals("dnd")) {
-			return Presences.DND;
-		} else {
-			return Presences.OFFLINE;
+			if (presences.size() < 1) { return null; }
+			return Collections.min(presences.values());
 		}
 	}
 
diff --git a/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java b/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java
new file mode 100644
index 000000000..9d77efab8
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/entities/ServiceDiscoveryResult.java
@@ -0,0 +1,242 @@
+package eu.siacs.conversations.entities;
+
+import android.content.ContentValues;
+import android.database.Cursor;
+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 org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import eu.siacs.conversations.xml.Element;
+import eu.siacs.conversations.xmpp.stanzas.IqPacket;
+
+public class ServiceDiscoveryResult {
+	public static final String TABLENAME = "discovery_results";
+	public static final String HASH = "hash";
+	public static final String VER = "ver";
+	public static final String RESULT = "result";
+
+	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 lang, final String name) {
+			this.category = category;
+			this.type = type;
+			this.lang = lang;
+			this.name = name;
+		}
+
+		public Identity(final Element el) {
+			this(
+				el.getAttribute("category"),
+				el.getAttribute("type"),
+				el.getAttribute("xml:lang"),
+				el.getAttribute("name")
+			);
+		}
+
+		public Identity(final JSONObject o) {
+			this(
+				o.optString("category", null),
+				o.optString("type", null),
+				o.optString("lang", null),
+				o.optString("name", null)
+			);
+		}
+
+		public String getCategory() {
+			return this.category;
+		}
+
+		public String getType() {
+			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;
+		}
+
+		public JSONObject toJSON() {
+			try {
+				JSONObject o = new JSONObject();
+				o.put("category", this.getCategory());
+				o.put("type", this.getType());
+				o.put("lang", this.getLang());
+				o.put("name", this.getName());
+				return o;
+			} catch(JSONException e) {
+				return null;
+			}
+		}
+	}
+
+	protected final String hash;
+	protected final byte[] ver;
+	protected final List<Identity> identities;
+	protected final List<String> features;
+
+	public ServiceDiscoveryResult(final IqPacket packet) {
+		this.identities = new ArrayList<>();
+		this.features = new ArrayList<>();
+		this.hash = "sha-1"; // We only support sha-1 for now
+
+		final List<Element> elements = packet.query().getChildren();
+
+		for (final Element element : elements) {
+			if (element.getName().equals("identity")) {
+				Identity id = new Identity(element);
+				if (id.getType() != null && id.getCategory() != null) {
+					identities.add(id);
+				}
+			} else if (element.getName().equals("feature")) {
+				if (element.getAttribute("var") != null) {
+					features.add(element.getAttribute("var"));
+				}
+			}
+		}
+
+		this.ver = this.mkCapHash();
+	}
+
+	public ServiceDiscoveryResult(String hash, byte[] ver, JSONObject o) throws JSONException {
+		this.identities = new ArrayList<>();
+		this.features = new ArrayList<>();
+		this.hash = hash;
+		this.ver = ver;
+
+		JSONArray identities = o.optJSONArray("identities");
+		for(int i = 0; i < identities.length(); i++) {
+			this.identities.add(new Identity(identities.getJSONObject(i)));
+		}
+
+		JSONArray features = o.optJSONArray("features");
+		for(int i = 0; i < features.length(); i++) {
+			this.features.add(features.getString(i));
+		}
+	}
+
+	public ServiceDiscoveryResult(Cursor cursor) throws JSONException {
+		this(
+			cursor.getString(cursor.getColumnIndex(HASH)),
+			Base64.decode(cursor.getString(cursor.getColumnIndex(VER)), Base64.DEFAULT),
+			new JSONObject(cursor.getString(cursor.getColumnIndex(RESULT)))
+		);
+	}
+
+	public List<Identity> getIdentities() {
+		return this.identities;
+	}
+
+	public List<String> getFeatures() {
+		return this.features;
+	}
+
+	public boolean hasIdentity(String category, String type) {
+		for(Identity id : this.getIdentities()) {
+			if((category == null || id.getCategory().equals(category)) &&
+			   (type == null || id.getType().equals(type))) {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	protected byte[] mkCapHash() {
+		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;
+		}
+	}
+
+	public JSONObject toJSON() {
+		try {
+			JSONObject o = new JSONObject();
+
+			JSONArray ids = new JSONArray();
+			for(Identity id : this.getIdentities()) {
+				ids.put(id.toJSON());
+			}
+			o.put("identites", ids);
+
+			o.put("features", new JSONArray(this.getFeatures()));
+
+			return o;
+		} catch(JSONException e) {
+			return null;
+		}
+	}
+
+	public ContentValues getContentValues() {
+		final ContentValues values = new ContentValues();
+		values.put(HASH, this.hash);
+		values.put(VER, new String(Base64.encode(this.ver, Base64.DEFAULT)).trim());
+		values.put(RESULT, this.toJSON().toString());
+		return values;
+	}
+}