From d97a6f6a5f96ced833462b21185edf7ae7476117 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ensar=20Saraj=C4=8Di=C4=87?= <dev@ensarsarajcic.com>
Date: Wed, 12 Jul 2023 17:45:24 +0200
Subject: [PATCH] Ensure that MMS reception ACK is sent to prevent duplicate
 MMS

This implements the getMmscInfoForReceptionAck method
in MmsReceiver which is according to android-smsmms
library required for some carriers, since otherwise
MMS would be duplicated. Unfortunately,
accessing MMSC information is more restricted with
each version of Android and this implementation relies
on system database on older versions and uses APN database
included with android-smsmms for newer versions, which will
work only on the default SIM card.
---
 .../com/simplemobiletools/smsmessenger/App.kt |  6 ++
 .../smsmessenger/receivers/MmsReceiver.kt     | 67 ++++++++++++++++++-
 2 files changed, 72 insertions(+), 1 deletion(-)

diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/App.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/App.kt
index 5f76354e..c5f624f6 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/App.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/App.kt
@@ -1,11 +1,17 @@
 package com.simplemobiletools.smsmessenger
 
 import android.app.Application
+import com.klinker.android.send_message.ApnUtils
 import com.simplemobiletools.commons.extensions.checkUseEnglish
+import com.simplemobiletools.commons.helpers.isRPlus
 
 class App : Application() {
     override fun onCreate() {
         super.onCreate()
         checkUseEnglish()
+
+        if (isRPlus()) {
+            ApnUtils.initDefaultApns(this) {}
+        }
     }
 }
diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/receivers/MmsReceiver.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/receivers/MmsReceiver.kt
index 57f35872..13911e4c 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/receivers/MmsReceiver.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/receivers/MmsReceiver.kt
@@ -1,19 +1,84 @@
 package com.simplemobiletools.smsmessenger.receivers
 
+import android.content.BroadcastReceiver
 import android.content.Context
+import android.content.Intent
 import android.net.Uri
 import android.os.Handler
 import android.os.Looper
+import android.preference.PreferenceManager
+import android.provider.Telephony
 import com.bumptech.glide.Glide
+import com.klinker.android.send_message.MmsReceivedReceiver
+import com.klinker.android.send_message.MmsReceivedReceiver.MmscInformation
+import com.klinker.android.send_message.MmsReceivedReceiver.SUBSCRIPTION_ID
+import com.klinker.android.send_message.Utils
+import com.simplemobiletools.commons.extensions.getStringValue
 import com.simplemobiletools.commons.extensions.isNumberBlocked
 import com.simplemobiletools.commons.extensions.normalizePhoneNumber
+import com.simplemobiletools.commons.extensions.queryCursor
 import com.simplemobiletools.commons.helpers.ensureBackgroundThread
+import com.simplemobiletools.commons.helpers.isQPlus
+import com.simplemobiletools.commons.helpers.isRPlus
 import com.simplemobiletools.smsmessenger.R
 import com.simplemobiletools.smsmessenger.extensions.*
 import com.simplemobiletools.smsmessenger.helpers.refreshMessages
 
 // more info at https://github.com/klinker41/android-smsmms
-class MmsReceiver : com.klinker.android.send_message.MmsReceivedReceiver() {
+class MmsReceiver : BroadcastReceiver() {
+
+    private var carriers = mutableMapOf<Int, MmscInformation>()
+
+    override fun onReceive(context: Context?, intent: Intent?) {
+        if (isRPlus() && carriers.isNotEmpty()) {
+            // This information is stored by ApnUtils from android-smsmms
+            PreferenceManager.getDefaultSharedPreferences(context).apply {
+                carriers[0] = MmscInformation(
+                    getString("mmsc_url", ""),
+                    getString("mms_proxy", ""),
+                    getString("mms_port", "0")?.toInt() ?: 0
+                )
+            }
+        } else {
+            val subscriptionId = intent?.getIntExtra(SUBSCRIPTION_ID, Utils.getDefaultSubscriptionId()) ?: Utils.getDefaultSubscriptionId()
+            if (carriers.containsKey(subscriptionId).not()) {
+                val baseUri = if (isQPlus()) {
+                    Telephony.Carriers.SIM_APN_URI
+                } else {
+                    Telephony.Carriers.CONTENT_URI
+                }
+                val uri = Uri.withAppendedPath(baseUri, subscriptionId.toString())
+                val projection = arrayOf(
+                    Telephony.Carriers.MMSC,
+                    Telephony.Carriers.MMSPROXY,
+                    Telephony.Carriers.MMSPORT,
+                )
+                val selection = "${Telephony.Carriers.TYPE} LIKE ?"
+                val selectionArgs = arrayOf("%mms%")
+
+                context?.queryCursor(uri, projection = projection, selection = selection, selectionArgs = selectionArgs) { cursor ->
+                    carriers[subscriptionId] = MmscInformation(
+                        cursor.getStringValue(Telephony.Carriers.MMSC),
+                        cursor.getStringValue(Telephony.Carriers.MMSPROXY),
+                        cursor.getStringValue(Telephony.Carriers.MMSPORT).toIntOrNull() ?: 0,
+                    )
+                }
+            }
+        }
+        val mmscInformation = if (isRPlus()) {
+            carriers[0]
+        } else {
+            val subscriptionId = intent?.getIntExtra(SUBSCRIPTION_ID, Utils.getDefaultSubscriptionId()) ?: Utils.getDefaultSubscriptionId()
+            carriers[subscriptionId]
+        }
+        MmsReceivedReceiverImplementation(mmscInformation).onReceive(context, intent)
+    }
+}
+
+private class MmsReceivedReceiverImplementation(private val mmscInformation: MmscInformation?) : MmsReceivedReceiver() {
+    override fun getMmscInfoForReceptionAck(): MmscInformation? {
+        return mmscInformation
+    }
 
     override fun isAddressBlocked(context: Context, address: String): Boolean {
         val normalizedAddress = address.normalizePhoneNumber()