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-rw-r--r--src/main/java/de/pixart/messenger/xmpp/jingle/JingleConnection.java11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/main/java/de/pixart/messenger/xmpp/jingle/JingleConnection.java b/src/main/java/de/pixart/messenger/xmpp/jingle/JingleConnection.java
index d403f8b75..884b27111 100644
--- a/src/main/java/de/pixart/messenger/xmpp/jingle/JingleConnection.java
+++ b/src/main/java/de/pixart/messenger/xmpp/jingle/JingleConnection.java
@@ -433,12 +433,14 @@ public class JingleConnection implements Transferable {
}
this.fileOffer = content.getFileOffer(this.ftVersion);
if (fileOffer != null) {
+ boolean remoteIsUsingJet = false;
Element encrypted = fileOffer.findChild("encrypted", AxolotlService.PEP_PREFIX);
if (encrypted == null) {
final Element security = content.findChild("security", Namespace.JINGLE_ENCRYPTED_TRANSPORT);
if (security != null && AxolotlService.PEP_PREFIX.equals(security.getAttribute("type"))) {
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": received jingle file offer with JET");
encrypted = security.findChild("encrypted", AxolotlService.PEP_PREFIX);
+ remoteIsUsingJet = true;
}
}
if (encrypted != null) {
@@ -486,7 +488,10 @@ public class JingleConnection implements Transferable {
}
}
message.resetFileParams();
- this.file.setExpectedSize(size);
+ //legacy OMEMO encrypted file transfers reported the file size after encryption
+ //JET reports the plain text size. however lower levels of our receiving code still
+ //expect the cipher text size. so we just + 16 bytes (auth tag size) here
+ this.file.setExpectedSize(size + (remoteIsUsingJet ? 16 : 0));
if (mJingleConnectionManager.hasStoragePermission()
&& size < this.mJingleConnectionManager.getAutoAcceptFileSize()
&& mXmppConnectionService.isDataSaverDisabled()) {
@@ -535,7 +540,9 @@ public class JingleConnection implements Transferable {
if (message.getEncryption() == Message.ENCRYPTION_AXOLOTL) {
this.file.setKey(mXmppAxolotlMessage.getInnerKey());
this.file.setIv(mXmppAxolotlMessage.getIV());
- this.file.setExpectedSize(file.getSize() + 16);
+ //legacy OMEMO encrypted file transfer reported file size of the encrypted file
+ //JET uses the file size of the plain text file. The difference is only 16 bytes (auth tag)
+ this.file.setExpectedSize(file.getSize() + (this.remoteSupportsOmemoJet ? 0 : 16));
final Element file = content.setFileOffer(this.file, false, this.ftVersion);
if (remoteSupportsOmemoJet) {
Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": remote announced support for JET");