very basic mam support

1 files changed, 137 insertions, 0 deletions

diff --git a/src/main/java/eu/siacs/conversations/services/MessageArchiveService.java b/src/main/java/eu/siacs/conversations/services/MessageArchiveService.java
new file mode 100644
index 00000000..4f47cdbe
--- /dev/null
+++ b/src/main/java/eu/siacs/conversations/services/MessageArchiveService.java
@@ -0,0 +1,137 @@
+package eu.siacs.conversations.services;
+
+import android.util.Log;
+
+import java.math.BigInteger;
+import java.util.HashSet;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Conversation;
+import eu.siacs.conversations.xml.Element;
+import eu.siacs.conversations.xmpp.OnIqPacketReceived;
+import eu.siacs.conversations.xmpp.jid.Jid;
+import eu.siacs.conversations.xmpp.stanzas.IqPacket;
+
+public class MessageArchiveService {
+
+	private final XmppConnectionService mXmppConnectionService;
+
+	private final HashSet<Query> queries = new HashSet<Query>();
+
+	public MessageArchiveService(final XmppConnectionService service) {
+		this.mXmppConnectionService = service;
+	}
+
+	public void query(final Conversation conversation) {
+		synchronized (this.queries) {
+			final Account account = conversation.getAccount();
+			long start = conversation.getLastMessageReceived();
+			long end = account.getXmppConnection().getLastSessionEstablished();
+			final Query query = new Query(conversation, start, end);
+			this.queries.add(query);
+			IqPacket packet = this.mXmppConnectionService.getIqGenerator().queryMessageArchiveManagement(query);
+			this.mXmppConnectionService.sendIqPacket(account, packet, new OnIqPacketReceived() {
+				@Override
+				public void onIqPacketReceived(Account account, IqPacket packet) {
+					Log.d(Config.LOGTAG, packet.toString());
+				}
+			});
+		}
+	}
+
+	public void processFin(Element fin) {
+		if (fin == null) {
+			return;
+		}
+		Query query = findQuery(fin.getAttribute("queryid"));
+		if (query == null) {
+			return;
+		}
+		Log.d(Config.LOGTAG,"fin "+fin.toString());
+		boolean complete = fin.getAttributeAsBoolean("complete");
+		Element set = fin.findChild("set","http://jabber.org/protocol/rsm");
+		Element last = set == null ? null : set.findChild("last");
+		if (complete || last == null) {
+			Log.d(Config.LOGTAG,"completed mam query for "+query.getWith().toString());
+			synchronized (this.queries) {
+				this.queries.remove(query);
+			}
+		} else {
+			Query nextQuery = query.next(last == null ? null : last.getContent());
+			IqPacket packet = this.mXmppConnectionService.getIqGenerator().queryMessageArchiveManagement(nextQuery);
+			synchronized (this.queries) {
+				this.queries.remove(query);
+				this.queries.add(nextQuery);
+			}
+			Log.d(Config.LOGTAG,packet.toString());
+			this.mXmppConnectionService.sendIqPacket(query.getConversation().getAccount(),packet,new OnIqPacketReceived() {
+				@Override
+				public void onIqPacketReceived(Account account, IqPacket packet) {
+					Log.d(Config.LOGTAG,packet.toString());
+				}
+			});
+		}
+	}
+
+	private Query findQuery(String id) {
+		if (id == null) {
+			return null;
+		}
+		synchronized (this.queries) {
+			for(Query query : this.queries) {
+				if (query.getQueryId().equals(id)) {
+					return query;
+				}
+			}
+			return null;
+		}
+	}
+
+	public class Query {
+		private long start;
+		private long end;
+		private Jid with;
+		private String queryId;
+		private String after = null;
+		private Conversation conversation;
+
+		public Query(Conversation conversation, long start, long end) {
+			this.conversation = conversation;
+			this.with = conversation.getContactJid().toBareJid();
+			this.start = start;
+			this.end = end;
+			this.queryId = new BigInteger(50, mXmppConnectionService.getRNG()).toString(32);
+		}
+
+		public Query next(String after) {
+			Query query = new Query(this.conversation,this.start,this.end);
+			query.after = after;
+			return query;
+		}
+
+		public String getAfter() {
+			return after;
+		}
+
+		public String getQueryId() {
+			return queryId;
+		}
+
+		public Jid getWith() {
+			return with;
+		}
+
+		public long getStart() {
+			return start;
+		}
+
+		public long getEnd() {
+			return end;
+		}
+
+		public Conversation getConversation() {
+			return conversation;
+		}
+	}
+}