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authorAndreas Straub <andy@strb.org>2015-07-30 19:16:58 +0200
committerAndreas Straub <andy@strb.org>2015-07-30 19:18:09 +0200
commit74ab36fda2d977e1b97b755a8298c488e6d74ba2 (patch)
tree8b25de1e9b204166f1ac8a0c7dc396b4247b7411 /src/main/java/eu/siacs/conversations/entities
parent1ed550b5c54ff873375c30fd94e4f20523f15187 (diff)
Fix session logic: enforce same type of encryption
Diffstat (limited to 'src/main/java/eu/siacs/conversations/entities')
-rw-r--r--src/main/java/eu/siacs/conversations/entities/Message.java31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/entities/Message.java b/src/main/java/eu/siacs/conversations/entities/Message.java
index 99b78d14..e6687701 100644
--- a/src/main/java/eu/siacs/conversations/entities/Message.java
+++ b/src/main/java/eu/siacs/conversations/entities/Message.java
@@ -709,4 +709,35 @@ public class Message extends AbstractEntity {
return conversation.getAccount().getAxolotlService().getFingerprintTrust(axolotlFingerprint)
== SQLiteAxolotlStore.Trust.TRUSTED;
}
+
+ private int getPreviousEncryption() {
+ for (Message iterator = this.prev(); iterator != null; iterator = iterator.prev()){
+ if( iterator.isCarbon() || iterator.getStatus() == STATUS_RECEIVED ) {
+ continue;
+ }
+ return iterator.getEncryption();
+ }
+ return ENCRYPTION_NONE;
+ }
+
+ private int getNextEncryption() {
+ for (Message iterator = this.next(); iterator != null; iterator = iterator.next()){
+ if( iterator.isCarbon() || iterator.getStatus() == STATUS_RECEIVED ) {
+ continue;
+ }
+ return iterator.getEncryption();
+ }
+ return conversation.getNextEncryption(false);
+ }
+
+ public boolean isValidInSession() {
+ int pastEncryption = this.getPreviousEncryption();
+ int futureEncryption = this.getNextEncryption();
+
+ boolean inUnencryptedSession = pastEncryption == ENCRYPTION_NONE
+ || futureEncryption == ENCRYPTION_NONE
+ || pastEncryption != futureEncryption;
+
+ return inUnencryptedSession || this.getEncryption() == pastEncryption;
+ }
}