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authorDaniel Gultsch <daniel.gultsch@rwth-aachen.de>2014-04-23 21:19:56 +0200
committerDaniel Gultsch <daniel.gultsch@rwth-aachen.de>2014-04-23 21:19:56 +0200
commit18c183a7676e24fa3141a50f628688a0a690f259 (patch)
treeef4013832bce4b4cf2e6062eba12eab8b3cf44d9 /src/eu/siacs/conversations/xmpp/jingle
parent9a8e55acd16c10335f74eea5b7ad4e2a864e2ec4 (diff)
deny files with unknown file types
Diffstat (limited to 'src/eu/siacs/conversations/xmpp/jingle')
-rw-r--r--src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java86
-rw-r--r--src/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java9
2 files changed, 74 insertions, 21 deletions
diff --git a/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java b/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
index f58aa30c..0959031b 100644
--- a/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
+++ b/src/eu/siacs/conversations/xmpp/jingle/JingleConnection.java
@@ -1,6 +1,7 @@
package eu.siacs.conversations.xmpp.jingle;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
@@ -21,6 +22,9 @@ import eu.siacs.conversations.xmpp.stanzas.IqPacket;
public class JingleConnection {
+ private final String[] extensions = {"webp","jpeg","jpg","png"};
+ private final String[] cryptoExtensions = {"pgp","gpg"};
+
private JingleConnectionManager mJingleConnectionManager;
private XmppConnectionService mXmppConnectionService;
@@ -74,9 +78,9 @@ public class JingleConnection {
if (acceptedAutomatically) {
message.markUnread();
}
+ mXmppConnectionService.databaseBackend.createMessage(message);
mXmppConnectionService.markMessage(message, Message.STATUS_RECIEVED);
}
- mXmppConnectionService.databaseBackend.createMessage(message);
Log.d("xmppService","sucessfully transmitted file. sha1:"+file.getSha1Sum());
}
};
@@ -123,13 +127,13 @@ public class JingleConnection {
Reason reason = packet.getReason();
if (reason!=null) {
if (reason.hasChild("cancel")) {
- this.cancel();
+ this.receiveCancel();
} else if (reason.hasChild("success")) {
- this.finish();
+ this.receiveSuccess();
}
} else {
Log.d("xmppService","remote terminated for no reason");
- this.cancel();
+ this.receiveCancel();
}
} else if (packet.isAction("session-accept")) {
receiveAccept(packet);
@@ -210,22 +214,42 @@ public class JingleConnection {
if (fileOffer!=null) {
this.file = this.mXmppConnectionService.getFileBackend().getJingleFile(message);
Element fileSize = fileOffer.findChild("size");
- Element fileName = fileOffer.findChild("name");
- this.file.setExpectedSize(Long.parseLong(fileSize.getContent()));
- conversation.getMessages().add(message);
- if (this.file.getExpectedSize()<=this.mJingleConnectionManager.getAutoAcceptFileSize()) {
- Log.d("xmppService","auto accepting file from "+packet.getFrom());
- this.acceptedAutomatically = true;
- this.sendAccept();
- } else {
- message.markUnread();
- Log.d("xmppService","not auto accepting new file offer with size: "+this.file.getExpectedSize()+" allowed size:"+this.mJingleConnectionManager.getAutoAcceptFileSize());
- if (this.mXmppConnectionService.convChangedListener!=null) {
- this.mXmppConnectionService.convChangedListener.onConversationListChanged();
+ Element fileNameElement = fileOffer.findChild("name");
+ if (fileNameElement!=null) {
+ boolean supportedFile = false;
+ String[] filename = fileNameElement.getContent().toLowerCase().split("\\.");
+ if (Arrays.asList(this.extensions).contains(filename[filename.length - 1])) {
+ supportedFile = true;
+ } else if (Arrays.asList(this.cryptoExtensions).contains(filename[filename.length - 1])) {
+ if (filename.length == 3) {
+ if (Arrays.asList(this.extensions).contains(filename[filename.length -2])) {
+ supportedFile = true;
+ this.message.setEncryption(Message.ENCRYPTION_PGP);
+ }
+ }
+ }
+ if (supportedFile) {
+ this.file.setExpectedSize(Long.parseLong(fileSize.getContent()));
+ conversation.getMessages().add(message);
+ if (this.file.getExpectedSize()<=this.mJingleConnectionManager.getAutoAcceptFileSize()) {
+ Log.d("xmppService","auto accepting file from "+packet.getFrom());
+ this.acceptedAutomatically = true;
+ this.sendAccept();
+ } else {
+ message.markUnread();
+ Log.d("xmppService","not auto accepting new file offer with size: "+this.file.getExpectedSize()+" allowed size:"+this.mJingleConnectionManager.getAutoAcceptFileSize());
+ if (this.mXmppConnectionService.convChangedListener!=null) {
+ this.mXmppConnectionService.convChangedListener.onConversationListChanged();
+ }
+ }
+ } else {
+ this.sendCancel();
}
+ } else {
+ this.sendCancel();
}
} else {
- Log.d("xmppService","no file offer was attached. aborting");
+ this.sendCancel();
}
}
@@ -331,7 +355,19 @@ public class JingleConnection {
Content content = packet.getJingleContent();
if (content.hasSocks5Transport()) {
if (content.socks5transport().hasChild("activated")) {
- onProxyActivated.success();
+ if ((this.transport!=null)&&(this.transport instanceof JingleSocks5Transport)) {
+ onProxyActivated.success();
+ } else {
+ String cid = content.socks5transport().findChild("activated").getAttribute("cid");
+ Log.d("xmppService","received proxy activated ("+cid+")prior to choosing our own transport");
+ JingleSocks5Transport connection = this.connections.get(cid);
+ if (connection!=null) {
+ connection.setActivated(true);
+ } else {
+ Log.d("xmppService","activated connection not found");
+ this.sendCancel();
+ }
+ }
} else if (content.socks5transport().hasChild("activated")) {
onProxyActivated.failed();
} else if (content.socks5transport().hasChild("candidate-error")) {
@@ -375,7 +411,7 @@ public class JingleConnection {
}
} else {
this.status = STATUS_TRANSMITTING;
- if (connection.isProxy()) {
+ if (connection.needsActivation()) {
if (connection.getCandidate().isOurs()) {
Log.d("xmppService","candidate "+connection.getCandidate().getCid()+" was our proxy and needs activation");
IqPacket activation = new IqPacket(IqPacket.TYPE_SET);
@@ -507,17 +543,25 @@ public class JingleConnection {
}
}
- private void finish() {
+ private void receiveSuccess() {
this.status = STATUS_FINISHED;
this.mXmppConnectionService.markMessage(this.message, Message.STATUS_SEND);
this.disconnect();
}
- public void cancel() {
+ private void receiveCancel() {
this.disconnect();
this.status = STATUS_CANCELED;
this.mXmppConnectionService.markMessage(this.message, Message.STATUS_SEND_REJECTED);
}
+
+ private void sendCancel() {
+ JinglePacket packet = bootstrapPacket("session-terminate");
+ Reason reason = new Reason();
+ reason.addChild("cancel");
+ packet.setReason(reason);
+ this.sendJinglePacket(packet);
+ }
private void connectNextCandidate() {
for(JingleCandidate candidate : this.candidates) {
diff --git a/src/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java b/src/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java
index f37d5a71..ea5d7285 100644
--- a/src/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java
+++ b/src/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java
@@ -24,6 +24,7 @@ public class JingleSocks5Transport extends JingleTransport {
private OutputStream outputStream;
private InputStream inputStream;
private boolean isEstablished = false;
+ private boolean activated = false;
protected Socket socket;
public JingleSocks5Transport(JingleConnection jingleConnection, JingleCandidate candidate) {
@@ -184,6 +185,10 @@ public class JingleSocks5Transport extends JingleTransport {
public boolean isProxy() {
return this.candidate.getType() == JingleCandidate.TYPE_PROXY;
}
+
+ public boolean needsActivation() {
+ return (this.isProxy() && !this.activated);
+ }
public void disconnect() {
if (this.socket!=null) {
@@ -203,4 +208,8 @@ public class JingleSocks5Transport extends JingleTransport {
public JingleCandidate getCandidate() {
return this.candidate;
}
+
+ public void setActivated(boolean activated) {
+ this.activated = activated;
+ }
}