From f3b5ebf4eb3e6fbd53662de2ef736deebf89a395 Mon Sep 17 00:00:00 2001
From: ale5000 <15793015+ale5000-git@users.noreply.github.com>
Date: Sun, 10 Mar 2024 19:51:37 +0100
Subject: [PATCH] Location: Fix exceptions in CellDetailsSource when the
 ACCESS_FINE_LOCATION permission isn't granted (#2220)

---
 .../network/cell/CellDetailsSource.kt         | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 play-services-location/core/provider/src/main/kotlin/org/microg/gms/location/network/cell/CellDetailsSource.kt

diff --git a/play-services-location/core/provider/src/main/kotlin/org/microg/gms/location/network/cell/CellDetailsSource.kt b/play-services-location/core/provider/src/main/kotlin/org/microg/gms/location/network/cell/CellDetailsSource.kt
new file mode 100644
index 00000000..8e809f95
--- /dev/null
+++ b/play-services-location/core/provider/src/main/kotlin/org/microg/gms/location/network/cell/CellDetailsSource.kt
@@ -0,0 +1,74 @@
+/*
+ * SPDX-FileCopyrightText: 2023 microG Project Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.microg.gms.location.network.cell
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.os.Build.VERSION.SDK_INT
+import android.os.WorkSource
+import android.telephony.CellInfo
+import android.telephony.TelephonyManager
+import android.util.Log
+import androidx.core.content.getSystemService
+
+private const val TAG = "CellDetailsSource"
+
+class CellDetailsSource(private val context: Context, private val callback: CellDetailsCallback) {
+    fun enable() = Unit
+    fun disable() = Unit
+
+    @SuppressLint("MissingPermission")
+    fun startScan(workSource: WorkSource?) {
+        val telephonyManager = context.getSystemService<TelephonyManager>() ?: return
+        if (SDK_INT >= 29) {
+            try {
+                telephonyManager.requestCellInfoUpdate(context.mainExecutor, object : TelephonyManager.CellInfoCallback() {
+                    override fun onCellInfo(cells: MutableList<CellInfo>) {
+                        val details = cells.map(CellInfo::toCellDetails).map { it.repair(context) }.filter(CellDetails::isValid)
+                        if (details.isNotEmpty()) callback.onCellDetailsAvailable(details)
+                    }
+                })
+            } catch (e: SecurityException) {
+                // It may trigger a SecurityException if the ACCESS_FINE_LOCATION permission isn't granted
+                Log.w(TAG, "requestCellInfoUpdate in startScan failed", e)
+            }
+
+            return
+        } else if (SDK_INT >= 17) {
+            val allCellInfo: List<CellInfo>? = try {
+                telephonyManager.allCellInfo
+            } catch (e: SecurityException) {
+                // It may trigger a SecurityException if the ACCESS_FINE_LOCATION permission isn't granted
+                Log.w(TAG, "allCellInfo in startScan failed", e)
+                null
+            }
+            if (allCellInfo != null) {
+                val details = allCellInfo.map(CellInfo::toCellDetails).map { it.repair(context) }.filter(CellDetails::isValid)
+                if (details.isNotEmpty()) {
+                    callback.onCellDetailsAvailable(details)
+                    return
+                }
+            }
+        }
+        val networkOperator = telephonyManager.networkOperator
+        if (networkOperator != null && networkOperator.length > 4) {
+            val mcc = networkOperator.substring(0, 3).toIntOrNull()
+            val mnc = networkOperator.substring(3).toIntOrNull()
+            val detail: CellDetails? = try {
+                telephonyManager.cellLocation?.toCellDetails(mcc, mnc)
+            } catch (e: SecurityException) {
+                // It may trigger a SecurityException if the ACCESS_FINE_LOCATION permission isn't granted
+                Log.w(TAG, "cellLocation in startScan failed", e)
+                null
+            }
+            if (detail?.isValid == true) callback.onCellDetailsAvailable(listOf(detail))
+        }
+    }
+
+    companion object {
+        fun create(context: Context, callback: CellDetailsCallback): CellDetailsSource = CellDetailsSource(context, callback)
+    }
+}