From dcedf394343f97284359f33a52e264089a335751 Mon Sep 17 00:00:00 2001
From: agnostic-apollo <agnosticapollo@gmail.com>
Date: Fri, 24 Sep 2021 00:47:38 +0500
Subject: [PATCH] Changed: Only allow ContentProvider access if
 allow-external-apps is set to true

---
 app/src/main/java/com/termux/app/RunCommandService.java  | 2 +-
 app/src/main/java/com/termux/app/TermuxOpenReceiver.java | 7 +++++++
 app/src/main/java/com/termux/app/utils/PluginUtils.java  | 8 +++++---
 app/src/main/res/values/strings.xml                      | 9 ++++++---
 4 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/app/src/main/java/com/termux/app/RunCommandService.java b/app/src/main/java/com/termux/app/RunCommandService.java
index f54f1693..7939d9c5 100644
--- a/app/src/main/java/com/termux/app/RunCommandService.java
+++ b/app/src/main/java/com/termux/app/RunCommandService.java
@@ -122,7 +122,7 @@ public class RunCommandService extends Service {
         // user knows someone tried to run a command in termux context, since it may be malicious
         // app or imported (tasker) plugin project and not the user himself. If a pending intent is
         // also sent, then its creator is also logged and shown.
-        errmsg = PluginUtils.checkIfRunCommandServiceAllowExternalAppsPolicyIsViolated(this);
+        errmsg = PluginUtils.checkIfAllowExternalAppsPolicyIsViolated(this, LOG_TAG);
         if (errmsg != null) {
             executionCommand.setStateFailed(Errno.ERRNO_FAILED.getCode(), errmsg);
             PluginUtils.processPluginExecutionCommandError(this, LOG_TAG, executionCommand, true);
diff --git a/app/src/main/java/com/termux/app/TermuxOpenReceiver.java b/app/src/main/java/com/termux/app/TermuxOpenReceiver.java
index a4f7e5bd..b5cb358e 100644
--- a/app/src/main/java/com/termux/app/TermuxOpenReceiver.java
+++ b/app/src/main/java/com/termux/app/TermuxOpenReceiver.java
@@ -13,6 +13,7 @@ import android.os.ParcelFileDescriptor;
 import android.provider.MediaStore;
 import android.webkit.MimeTypeMap;
 
+import com.termux.app.utils.PluginUtils;
 import com.termux.shared.data.IntentUtils;
 import com.termux.shared.logger.Logger;
 import com.termux.shared.termux.TermuxConstants;
@@ -190,6 +191,12 @@ public class TermuxOpenReceiver extends BroadcastReceiver {
                     throw new IllegalArgumentException("Invalid path: " + path);
                 }
 
+                // If "allow-external-apps" property to not set to "true", then throw exception
+                String errmsg = PluginUtils.checkIfAllowExternalAppsPolicyIsViolated(getContext(), LOG_TAG);
+                if (errmsg != null) {
+                    throw new IllegalArgumentException(errmsg);
+                }
+
                 // Do not allow apps with RUN_COMMAND permission to modify termux apps properties files,
                 // including allow-external-apps
                 if (TermuxConstants.TERMUX_PROPERTIES_PRIMARY_FILE_PATH.equals(path) ||
diff --git a/app/src/main/java/com/termux/app/utils/PluginUtils.java b/app/src/main/java/com/termux/app/utils/PluginUtils.java
index 17fbbdb7..adc165a2 100644
--- a/app/src/main/java/com/termux/app/utils/PluginUtils.java
+++ b/app/src/main/java/com/termux/app/utils/PluginUtils.java
@@ -321,10 +321,12 @@ public class PluginUtils {
      * @param context The {@link Context} to get error string.
      * @return Returns the {@code error} if policy is violated, otherwise {@code null}.
      */
-    public static String checkIfRunCommandServiceAllowExternalAppsPolicyIsViolated(final Context context) {
+    public static String checkIfAllowExternalAppsPolicyIsViolated(final Context context, String apiName) {
         String errmsg = null;
-        if (!SharedProperties.isPropertyValueTrue(context, TermuxPropertyConstants.getTermuxPropertiesFile(), TermuxConstants.PROP_ALLOW_EXTERNAL_APPS, true)) {
-            errmsg = context.getString(R.string.error_run_command_service_allow_external_apps_ungranted);
+        if (!SharedProperties.isPropertyValueTrue(context, TermuxPropertyConstants.getTermuxPropertiesFile(),
+            TermuxConstants.PROP_ALLOW_EXTERNAL_APPS, true)) {
+            errmsg = context.getString(R.string.error_allow_external_apps_ungranted, apiName,
+                TermuxFileUtils.getUnExpandedTermuxPath(TermuxConstants.TERMUX_PROPERTIES_PRIMARY_FILE_PATH));
         }
 
         return errmsg;
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 192eddd5..d5335bf0 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -9,7 +9,6 @@
     <!ENTITY TERMUX_STYLING_APP_NAME "Termux:Styling">
     <!ENTITY TERMUX_TASKER_APP_NAME "Termux:Tasker">
     <!ENTITY TERMUX_WIDGET_APP_NAME "Termux:Widget">
-    <!ENTITY TERMUX_PROPERTIES_PRIMARY_PATH_SHORT "~/.termux/termux.properties">
     ]>
 
 <resources>
@@ -105,8 +104,6 @@
     <!-- Termux RunCommandService -->
     <string name="error_run_command_service_invalid_intent_action">Invalid intent action to RunCommandService: `%1$s`</string>
     <string name="error_run_command_service_mandatory_extra_missing">Mandatory extra missing to RunCommandService: \"%1$s\"</string>
-    <string name="error_run_command_service_allow_external_apps_ungranted">RunCommandService requires `allow-external-apps`
-        property to be set to `true` in `&TERMUX_PROPERTIES_PRIMARY_PATH_SHORT;` file.</string>
     <string name="error_run_command_service_api_help">Visit %1$s for more info on RUN_COMMAND Intent usage.</string>
 
 
@@ -118,6 +115,12 @@
 
 
 
+    <!-- Miscellaneous -->
+    <string name="error_allow_external_apps_ungranted">%1$s requires `allow-external-apps`
+        property to be set to `true` in `%2$s` file.</string>
+
+
+
     <!-- Termux Settings -->
     <string name="title_activity_termux_settings">&TERMUX_APP_NAME; Settings</string>