From 227dd8d2bcbb86599b22483bc56972aab66d7890 Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Sun, 18 Jul 2021 22:07:34 -0500
Subject: [PATCH] Intercept DIAL and CALL to tel: and rewrite to cheogram

This is a proof of concept.  It catches tel: from browser, but also taps on call
button in contacts, etc, and rewrites to a Cheogram JID.  It does not query the
user's roster for gateway options, or ask the gateways to convert the URI, but
simply assumes Cheogram format and jams it in.  It also does not initiate a
call, but simply uses the default XmppUri action which will be to either add to
roster or open conversation.
---
 src/main/AndroidManifest.xml                              | 8 ++++++++
 .../eu/siacs/conversations/ui/UriHandlerActivity.java     | 2 ++
 src/main/java/eu/siacs/conversations/utils/XmppUri.java   | 2 ++
 3 files changed, 12 insertions(+)

diff --git a/src/main/AndroidManifest.xml b/src/main/AndroidManifest.xml
index c98aae0419d3e7576a455c3e193fecd18a65bb98..f5db03b69cf197635283ed22d35094ad43ade33c 100644
--- a/src/main/AndroidManifest.xml
+++ b/src/main/AndroidManifest.xml
@@ -144,6 +144,14 @@
                 <data android:scheme="imto" />
                 <data android:host="jabber" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.CALL" />
+                <action android:name="android.intent.action.DIAL" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="tel" />
+            </intent-filter>
         </activity>
         <activity
             android:name=".ui.StartConversationActivity"
diff --git a/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java b/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java
index 57e1aadcb004d09d3258aca880f6d9c67060eec4..e549c9d20ec8097698fbe579f0518c72e482faf2 100644
--- a/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/UriHandlerActivity.java
@@ -205,6 +205,8 @@ public class UriHandlerActivity extends AppCompatActivity {
         switch (data.getAction()) {
             case Intent.ACTION_VIEW:
             case Intent.ACTION_SENDTO:
+            case Intent.ACTION_DIAL:
+            case Intent.ACTION_CALL:
                 handleUri(data.getData());
                 break;
             case ACTION_SCAN_QR_CODE:
diff --git a/src/main/java/eu/siacs/conversations/utils/XmppUri.java b/src/main/java/eu/siacs/conversations/utils/XmppUri.java
index d0f4cf4217d20057ae98935bec2365225d6b99c4..0343af4c90c83aaa4dbb4c365952f46c9a622771 100644
--- a/src/main/java/eu/siacs/conversations/utils/XmppUri.java
+++ b/src/main/java/eu/siacs/conversations/utils/XmppUri.java
@@ -174,6 +174,8 @@ public class XmppUri {
             } catch (final UnsupportedEncodingException ignored) {
                 jid = null;
             }
+        } else if ("tel".equalsIgnoreCase(scheme)) {
+            jid = uri.getSchemeSpecificPart().replaceAll("[^\\d\\+]+", "") + "@cheogram.com";
         } else {
             jid = null;
         }