Fixed: Use /system/bin/am for broadcast commands on Android >= 14…

… instead of TermuxAm

Using TermuxAm for broadcast commands will trigger the `Sending broadcast <action> with resultTo requires resultToApp` exception and will hang the app_process command forever. Reproducible on Android 14 revision 8 AVD.

Related comment #9 (comment)

am-libexec-packaged

@@ -2,6 +2,45 @@
 
 AM_APK_PATH="@TERMUX_PREFIX@/libexec/termux-am/am.apk"
 
+is_int() {
+    case "$1" in
+        ''|*[!0-9]*) return 1;;
+        *) return 0;;
+    esac
+}
+
+# If sdk version is not exported by app, then get value with getprop instead.
+if ! is_int "$ANDROID__BUILD_VERSION_SDK"; then
+    ANDROID__BUILD_VERSION_SDK="$(getprop "ro.build.version.sdk")"
+    if ! is_int "$ANDROID__BUILD_VERSION_SDK"; then
+        echo "Failed to get android build version sdk with getprop" 1>&2
+        exit 1
+    fi
+fi
+
+# Do not use TermuxAm for broadcast commands on Android >= 14 since it
+# will trigger the `Sending broadcast <action> with resultTo requires resultToApp`
+# exception in logcat by ActivityManagerService and will hang the
+# app_process command forever since no result callback is received
+# by TermuxAm `IIntentReceiver.performReceive()`.
+# - https://github.com/termux/TermuxAm/issues/9#issuecomment-1649867810
+if [ "$ANDROID__BUILD_VERSION_SDK" -ge 34 ] && [ "$1" = "broadcast" ]; then
+    is_int "$TERMUX__USER_ID" || TERMUX__USER_ID=0
+    shift 1 # Remove the first `broadcast` argument
+
+    # Use a subshell with specified redirection to prevent
+    # `cmd: Failure calling service activity` error on Android >= 8
+    # due to selinux restrictions where the `system_server` source
+    # domain does not have access to `untrusted_app_all_devpts`
+    # `pty` devices when a source transition is made from `untrusted_app*`
+    # domain when `/system/bin/am` is executed.
+    # - https://github.com/termux/termux-packages/discussions/8292#discussioncomment-5102555
+    output="$(/system/bin/am broadcast --user "$TERMUX__USER_ID" "$@" 2>&1 </dev/null)"
+    exit_code=$?
+    echo "$output"
+    exit $exit_code
+fi
+
 # If apk file is writable and current effective user is not root (0),
 # system (1000) and shell (2000), then remove write bit from apk
 # permissions for current used for Android >= 14 since it will trigger

app/src/androidTest/java/com/termux/termuxam/IActivityManagerTest.java

@@ -5,6 +5,7 @@
 import android.content.IIntentReceiver;
 import android.content.Intent;
 import android.content.ServiceConnection;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
 
@@ -95,6 +96,11 @@ public void testStartActivity() throws Exception {
 
     @Test
     public void testBroadcastIntent() throws Exception {
+        // Do not run on Android `>= 14` since it will trigger the
+        // `Sending broadcast <action> with resultTo requires resultToApp` exception in logcat by
+        // ActivityManagerService and will hang the test forever
+        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.TIRAMISU) return;
+
         final CountDownLatch latch = new CountDownLatch(1);
         final Intent[] outIntent = new Intent[1];
         final String[] outData = new String[1];