From a926c520f2771ec58c0bdf693df0c48e1a0c46ae Mon Sep 17 00:00:00 2001
From: osm0sis <osm0sis@outlook.com>
Date: Sun, 4 Aug 2024 00:06:54 -0300
Subject: [PATCH] Restore resetprop_hexpatch for older Magisk which still needs
 it

---
 module/common_func.sh | 40 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 38 insertions(+), 2 deletions(-)

diff --git a/module/common_func.sh b/module/common_func.sh
index 187f19d..bc1a2d3 100644
--- a/module/common_func.sh
+++ b/module/common_func.sh
@@ -1,10 +1,46 @@
+RESETPROP="resetprop -n"
+[ -n "$MAGISK_VER_CODE" ] && [ "$MAGISK_VER_CODE" -lt "27003" ] && RESETPROP=resetprop_hexpatch
+
+# resetprop_hexpatch [-f|--force] <prop name> <new value>
+resetprop_hexpatch() {
+    case "$1" in
+        -f|--force) local FORCE=1; shift;;
+    esac 
+
+    local NAME="$1"
+    local NEWVALUE="$2"
+    local CURVALUE="$(resetprop "$NAME")"
+
+    [ ! "$NEWVALUE" -o ! "$CURVALUE" ] && return 1
+    [ "$NEWVALUE" = "$CURVALUE" -a ! "$FORCE" ] && return 2
+
+    local NEWLEN=${#NEWVALUE}
+    if [ -f /dev/__properties__ ]; then
+        local PROPFILE=/dev/__properties__
+    else
+        local PROPFILE="/dev/__properties__/$(resetprop -Z "$NAME")"
+    fi
+    [ ! -f "$PROPFILE" ] && return 3
+    local NAMEOFFSET=$(echo $(strings -t d "$PROPFILE" | grep "$NAME") | cut -d ' ' -f 1)
+
+    #<hex 2-byte change counter><flags byte><hex length of prop value><prop value + nul padding to 92 bytes><prop name>
+    local NEWHEX="$(printf '%02x' "$NEWLEN")$(printf "$NEWVALUE" | od -A n -t x1 -v | tr -d ' \n')$(printf "%$((92-NEWLEN))s" | sed 's/ /00/g')"
+
+    printf "Patch '$NAME' to '$NEWVALUE' in '$PROPFILE' @ 0x%08x -> \n[0000??$NEWHEX]\n" $((NAMEOFFSET-96))
+
+    echo -ne "\x00\x00" \
+        | dd obs=1 count=2 seek=$((NAMEOFFSET-96)) conv=notrunc of="$PROPFILE"
+    echo -ne "$(printf "$NEWHEX" | sed -e 's/.\{2\}/&\\x/g' -e 's/^/\\x/' -e 's/\\x$//')" \
+        | dd obs=1 count=93 seek=$((NAMEOFFSET-93)) conv=notrunc of="$PROPFILE"
+}
+
 # resetprop_if_diff <prop name> <expected value>
 resetprop_if_diff() {
     local NAME="$1"
     local EXPECTED="$2"
     local CURRENT="$(resetprop "$NAME")"
 
-    [ -z "$CURRENT" ] || [ "$CURRENT" = "$EXPECTED" ] || resetprop -n "$NAME" "$EXPECTED"
+    [ -z "$CURRENT" ] || [ "$CURRENT" = "$EXPECTED" ] || $RESETPROP "$NAME" "$EXPECTED"
 }
 
 # resetprop_if_match <prop name> <value match string> <new value>
@@ -13,7 +49,7 @@ resetprop_if_match() {
     local CONTAINS="$2"
     local VALUE="$3"
 
-    [[ "$(resetprop "$NAME")" = *"$CONTAINS"* ]] && resetprop -n "$NAME" "$VALUE"
+    [[ "$(resetprop "$NAME")" = *"$CONTAINS"* ]] && $RESETPROP "$NAME" "$VALUE"
 }
 
 # stub for boot-time