Add fallback busybox to prevent failure

Author: fatalcoder524

app/src/main/assets/flash_ak3.sh

@@ -1,11 +1,16 @@
 #!/system/bin/sh
 
 ## setup for testing:
-unzip -p "$Z" tools*/busybox > $F/busybox;
+unzip -p "$Z" tools*/busybox > $F/busybox_ak;
 unzip -p "$Z" META-INF/com/google/android/update-binary > $F/update-binary;
 ##
 
-chmod 755 $F/busybox;
+chmod 755 $F/busybox_ak;
+$F/busybox_ak >/dev/null 2>&1
+if [ $? -eq 0 ]; then
+  mv $F/busybox $F/busybox_orig
+  mv $F/busybox_ak $F/busybox
+fi
 $F/busybox chmod 755 $F/update-binary;
 $F/busybox chown root:root $F/busybox $F/update-binary;
 
@@ -18,6 +23,9 @@ $F/busybox mkdir -p $TMP;
 $F/busybox mount -t tmpfs -o noatime tmpfs $TMP;
 #$F/busybox mount | $F/busybox grep -q " $TMP " || exit 1;
 
+PATTERN='\$[Bb][Bb] chmod -R 755 tools bin;';
+sed -i "/$PATTERN/i cp -f \"\$F/busybox\" \$AKHOME/tools;" "$F/update-binary";
+
 # update-binary <RECOVERY_API_VERSION> <OUTFD> <ZIPFILE>
 AKHOME=$TMP/anykernel $F/busybox ash $F/update-binary 3 1 "$Z";
 RC=$?;
@@ -26,6 +34,7 @@ $F/busybox umount $TMP;
 $F/busybox rm -rf $TMP;
 $F/busybox mount -o ro,remount -t auto /;
 $F/busybox rm -f $F/update-binary $F/busybox;
+mv $F/busybox_orig $F/busybox
 
 # work around libsu not cleanly accepting return or exit as last line
 safereturn() { return $RC; }

app/src/main/assets/flash_ak3_mkbootfs.sh

@@ -1,11 +1,16 @@
 #!/system/bin/sh
 
 ## setup for testing:
-unzip -p "$Z" tools*/busybox > $F/busybox;
+unzip -p "$Z" tools*/busybox > $F/busybox_ak;
 unzip -p "$Z" META-INF/com/google/android/update-binary > $F/update-binary;
 ##
 
-chmod 755 $F/busybox;
+chmod 755 $F/busybox_ak;
+$F/busybox_ak >/dev/null 2>&1
+if [ $? -eq 0 ]; then
+  mv $F/busybox $F/busybox_orig
+  mv $F/busybox_ak $F/busybox
+fi
 $F/busybox chmod 755 $F/update-binary;
 $F/busybox chown root:root $F/busybox $F/update-binary;
 
@@ -20,6 +25,7 @@ $F/busybox mount -t tmpfs -o noatime tmpfs $TMP;
 
 PATTERN='\$[Bb][Bb] chmod -R 755 tools bin;';
 sed -i "/$PATTERN/i cp -f \"\$F/mkbootfs\" \$AKHOME/tools;" "$F/update-binary";
+sed -i "/$PATTERN/i cp -f \"\$F/busybox\" \$AKHOME/tools;" "$F/update-binary";
 
 # update-binary <RECOVERY_API_VERSION> <OUTFD> <ZIPFILE>
 AKHOME=$TMP/anykernel $F/busybox ash $F/update-binary 3 1 "$Z";
@@ -29,6 +35,7 @@ $F/busybox umount $TMP;
 $F/busybox rm -rf $TMP;
 $F/busybox mount -o ro,remount -t auto /;
 $F/busybox rm -f $F/update-binary $F/busybox;
+mv $F/busybox_orig $F/busybox
 
 # work around libsu not cleanly accepting return or exit as last line
 safereturn() { return $RC; }

app/src/main/java/com/github/capntrips/kernelflasher/MainActivity.kt

@@ -195,6 +195,7 @@ class MainActivity : ComponentActivity() {
             copyNativeBinary("httools_static") // v3.2.0
             copyNativeBinary("magiskboot") // v29.0
             copyNativeBinary("bootctl") // aosp_arm64-img-13613025 android14
+            copyNativeBinary("busybox") // BusyBox v1.36.1.1
             copyAsset("mkbootfs")
             copyAsset("ksuinit")
             copyAsset("flash_ak3.sh")