[RUS] Blackmagic Design - DaVinci Resolve Studio 18.5 [Intel/Apple] [K-ed]

#!/bin/bash -ue
set -ueo pipefail
fail() {
    >&2 echo -e "\nError: $1"
    exit 1
}
is_dry_run () {
  if [ ${dry_run+x} ]; then
    return 0
  else
    return 1
  fi
}
have_ggrep () {
  if which ggrep >/dev/null; then
    return 0
  else
    return 1
  fi
}
do_backup() {
    bakfile="$1.bak"
    test -f "$bakfile" || cp -n "$1" "$bakfile"
}
do_patch_file_pattern() {
    file=$1
    pattern=$2
    patch=$3
    patchOffset=$4
    is_dry_run || do_backup "$file"
    escaped_pat=$(echo "$pattern" | sed -e 's/xx/./g' -e 's/\([0-9a-fA-F]\{2\}\)/\\x\1/g' -e 's/ //g')
    ret=0
    if have_ggrep ; then
      grep_cmd=ggrep
      grep_extra_opts="--perl-regexp"
    else
      grep_cmd=grep
      grep_extra_opts=
    fi
    if matches=$(LANG=C "$grep_cmd" -m 2 --only-matching --byte-offset --binary --text $grep_extra_opts --regexp="${escaped_pat}" "${file}");
    then
      match_cnt=$( wc -l <<<"${matches}")
      if [ "${match_cnt}" -ne 1 ]
      then
        fail "File {$file} pattern ${pattern} found ${match_cnt} matches, should be exactly one"
      fi
    else
      errcode=$?
      if [ $errcode -eq 1 ]
      then
        if ! is_dry_run; then
          fail "ggrep: pattern ${pattern} not found in file ${file}"
        else
          echo "Dry run: ignoring error: ggrep: pattern ${pattern} not found in file ${file}"
          return 0
        fi
      else
        fail "ggrep error $?"
      fi
    fi
    offset=$(LANG=C cut -f '1' -d ':' <<<"${matches}")
    if is_dry_run ;then
      printf "Dry run: not patching %s at offset 0x%x\n" "$(basename "$file")" "$[patchOffset + offset]"
    else
      printf "\\x${patch// /\\x}" | dd of="${file}" seek="$[patchOffset + offset]" bs=1 conv=notrunc status=none
    fi
}
get_files_to_patch() {
    path="$1"
    echo "${path}/Contents/MacOS/Resolve"
    echo "${path}/Contents/Libraries/Fusion/libfusionsystem.dylib"
}
check_perms() {
    IFS=$'\n' read -rd '' -a files < <(get_files_to_patch "$1") || true
    for file in "${files[@]}"; do
        echo -n "Checking ${file} write permissions.."
        if [ ! -w "${file}" ]; then
            fail "We don't have write permission to ${file}, please re-run with sudo or change directory permissions"
        fi
        echo OK
    done
}
ensure_license() {
  licfile="/Library/Application Support/Blackmagic Design/DaVinci Resolve/.license/blackmagic.lic"
  licpath=$(dirname "$licfile")
  mkdir -p "$licpath"
  test -f "$licfile" || cat <<EOF >"$licfile"
LICENSE blackmagic davinciresolvestudio 999999 permanent uncounted
  hostid=ANY issuer=CGP customer=CGP issued=28-dec-2023
  akey=0000-0000-0000-0000 _ck=00 sig="00"
EOF
}
do_codesign() {
  pushd "$1"
  codesign --force --sign - --deep . || fail "Error during codesign, make sure your application path ($path) is correct and that you have write permissions"
  popd
}
do_usage() {
  cat <<EOF
Usage: $0 [options] [path_to_DaVinci_Resolve.app]
  Options:
    -n|--dry-run   : Check if patches apply, don't actually patch anything
    -h|--help      : Show this message
  Examples:
    $0
      - Apply patches to application at the default path '/Applications/DaVinci Resolve/DaVinci Resolve.app'
    $0 --dry-run /Applications/DaVinci Resolve 19/DaVinci Resolve.app
      - Check if patches apply to version installed to '/Applications/DaVinci Resolve 19'
EOF
  exit 0
}
do_patch() {
  IFS=$'\n' read -rd '' -a files < <(get_files_to_patch "$1") || true
  resolve="${files[0]}"
  fusion="${files[1]}"
  # Resolve and libfusion
  # patch out call to __rlm_auth_stat
  arm_pat1="a0 03 5f f8 a1 83 5e f8 e3 0f 40 b9"
  intel_pat1="31 c0 89 c2 48 8b 7d f0 48 8b 75 e8 8b 4d cc"
  # Resolve only
  # 2BMDCloudLicenseError(int, int)
  # 1OnBMDCloudLicenseError(int, int)
  # ignore license check results
  arm_pat2="ff 43 01 d1 f6 57 02 a9 f4 4f 03 a9 fd 7b 04 a9 fd 03 01 91 f3 03 00 aa xx xx xx 97 xx xx xx xx xx xx xx 34 xx xx xx 97"
  intel_pat2="55 48 89 e5 41 57 41 56 41 54 53 48 83 ec 20 48 89 fb e8 xx xx xx ff 48 89 c7"
  arm_patch1="00 00 80 d2"
  arm_patch2="20 00 80 52"
  # xor rax, rax
  intel_patch1="48 31 c0 90 90"
  # mov al, 1
  intel_patch2="b0 01 90 90 90"
  # arm
  do_patch_file_pattern "$resolve" "$arm_pat1" "$arm_patch1" 16
  do_patch_file_pattern "$fusion" "$arm_pat1" "$arm_patch1" 16
  do_patch_file_pattern "$resolve" "$arm_pat2" "$arm_patch2" 28
  do_patch_file_pattern "$resolve" "$arm_pat2" "$arm_patch2" 40
  # intel
  do_patch_file_pattern "$resolve" "$intel_pat1" "$intel_patch1" 15
  do_patch_file_pattern "$fusion" "$intel_pat1" "$intel_patch1" 15
  do_patch_file_pattern "$resolve" "$intel_pat2" "$intel_patch2" 26
  do_patch_file_pattern "$resolve" "$intel_pat2" "$intel_patch2" 47
}
while [[ $# -gt 0 ]]; do
  case $1 in
    -n|--dry-run)
      dry_run=1
      shift # past value
      ;;
    -h|--help)
      do_usage
      shift # past value
      ;;
  *)
    break
  esac
done
path="${1:-/Applications/DaVinci Resolve/DaVinci Resolve.app/}"
check_perms "$path"
do_patch "$path"
if ! is_dry_run ; then
  ensure_license
  do_codesign "$path"
  echo All files patched successfully
fi