From 48dfe298f2f6ae3654a28b9cdf4fc3525b638459 Mon Sep 17 00:00:00 2001
From: Christian Schneppe <christian@pix-art.de>
Date: Sun, 16 Apr 2017 12:19:29 +0200
Subject: transform aesgcm:// links back to https:// before connecting through
 Tor

---
 .../pixart/messenger/http/HttpDownloadConnection.java   | 17 ++++++++++++-----
 .../java/de/pixart/messenger/utils/CryptoHelper.java    | 14 +++++++++++++-
 2 files changed, 25 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java b/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
index d49111dbf..722c1dea9 100644
--- a/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
+++ b/src/main/java/de/pixart/messenger/http/HttpDownloadConnection.java
@@ -75,9 +75,9 @@ public class HttpDownloadConnection implements Transferable {
         this.message.setTransferable(this);
         try {
             if (message.hasFileOnRemoteHost()) {
-                mUrl = message.getFileParams().url;
+                mUrl = CryptoHelper.toHttpsUrl(message.getFileParams().url);
             } else {
-                mUrl = new URL(message.getBody());
+                mUrl = CryptoHelper.toHttpsUrl(new URL(message.getBody()));
             }
             String[] parts = mUrl.getPath().toLowerCase().split("\\.");
             String lastPart = parts.length >= 1 ? parts[parts.length - 1] : null;
@@ -97,8 +97,8 @@ public class HttpDownloadConnection implements Transferable {
             String filename = fileDateFormat.format(new Date(message.getTimeSent())) + "_" + message.getUuid().substring(0, 4);
             message.setRelativeFilePath(filename + "." + extension);
             this.file = mXmppConnectionService.getFileBackend().getFile(message, false);
-            String reference = mUrl.getRef();
-            if (reference != null && reference.length() == 96) {
+            final String reference = mUrl.getRef();
+            if (reference != null && reference.matches("([A-Fa-f0-9]{2}){48}")) {
                 this.file.setKeyAndIv(CryptoHelper.hexToBytes(reference));
             }
 
@@ -342,7 +342,14 @@ public class HttpDownloadConnection implements Transferable {
 
         private void updateImageBounds() {
             message.setType(Message.TYPE_FILE);
-            mXmppConnectionService.getFileBackend().updateFileParams(message, mUrl);
+            final URL url;
+            final String ref = mUrl.getRef();
+            if (ref != null && ref.matches("([A-Fa-f0-9]{2}){48}")) {
+                url = CryptoHelper.toAesGcmUrl(mUrl);
+            } else {
+                url = mUrl;
+            }
+            mXmppConnectionService.getFileBackend().updateFileParams(message, url);
             mXmppConnectionService.updateMessage(message);
         }
 
diff --git a/src/main/java/de/pixart/messenger/utils/CryptoHelper.java b/src/main/java/de/pixart/messenger/utils/CryptoHelper.java
index 06fda4163..d15f4bef5 100644
--- a/src/main/java/de/pixart/messenger/utils/CryptoHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/CryptoHelper.java
@@ -29,6 +29,7 @@ import de.pixart.messenger.Config;
 import de.pixart.messenger.R;
 import de.pixart.messenger.entities.Account;
 import de.pixart.messenger.entities.Message;
+import de.pixart.messenger.http.AesGcmURLStreamHandler;
 import de.pixart.messenger.xmpp.jid.InvalidJidException;
 import de.pixart.messenger.xmpp.jid.Jid;
 
@@ -238,7 +239,18 @@ public final class CryptoHelper {
             return url;
         }
         try {
-            return new URL("aesgcm" + url.toString().substring(url.getProtocol().length()));
+            return new URL(AesGcmURLStreamHandler.PROTOCOL_NAME + url.toString().substring(url.getProtocol().length()));
+        } catch (MalformedURLException e) {
+            return url;
+        }
+    }
+
+    public static URL toHttpsUrl(URL url) {
+        if (!url.getProtocol().equalsIgnoreCase(AesGcmURLStreamHandler.PROTOCOL_NAME)) {
+            return url;
+        }
+        try {
+            return new URL("https" + url.toString().substring(url.getProtocol().length()));
         } catch (MalformedURLException e) {
             return url;
         }
-- 
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