sapfile

#!/bin/bash
# sapfile: Determine and display SAP file type
#
# Copyright 2023 Bernd Finger, Red Hat
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -o errexit
set -o nounset
set -o pipefail

usage () {
   echo "sapfile: Determine and display SAP file type. If unknown, call the file command."
   echo "Usage: sapfile [OPTION...] [FILE...]"
   echo "Determine type of SAP FILEs, optionally followed by type of FILEs."
   echo "  -h, --help                 display this help and exit"
   echo "  -i                         also display the output of the plain file command for this FILE"
}

if [[ $# == 0 || ${1}. == "-h." || ${1}. == "--help." ]]; then
   usage
   exit 1
fi
if [[ ${1}. == "-i." ]]; then
   _RUN_FILE_COMMAND="y"
   shift 1
else
   _RUN_FILE_COMMAND="n"
fi

for _FILE in "$@"; do
   if [[ ${_RUN_FILE_COMMAND}. = "y." ]]; then
      _FILE_OUTPUT=$(file "${_FILE}" | sed 's,'"${_FILE}"': ,,')
   else
      _FILE_OUTPUT=""
   fi
   printf "%-32s " "${_FILE}":

   if [[ ! -e "${_FILE}" ]]; then
      echo "No such file or directory."
      exit 1
   fi
   if [[ -d "${_FILE}" ]]; then
      printf "%-24s%s\n" "directory" "${_FILE_OUTPUT}"
      exit 1
   fi

   _FILE_TYPE=$(echo "${_FILE}" | awk '
   BEGIN{_sap_file_type="look_inside"}
   /SAPCAR/&&/\.EXE/{_sap_file_type="sapcar"}
   /IMDB/&&/\.SAR/{_sap_file_type="sap_hana"}
   /SWPM/&&/\.SAR/{_sap_file_type="sap_swpm"}
   /SAPHOSTAGENT/&&/\.SAR/{_sap_file_type="sap_hostagent"}
   /igsexe/||/igshelper/{_sap_file_type="sap_igs"}
   /SAPEXE_/||/SAPEXEDB_/{_sap_file_type="sap_kernel"}
   /SAPWEBDISP_/{_sap_file_type="sap_webdisp"}
   /SAPJVM/{_sap_file_type="sap_jvm"}
   /ASEBC/{_sap_file_type="sap_db_ase"}
   /DBATL/{_sap_file_type="sap_db_oracle"}
   /COMPLETE/{_sap_file_type="sap_hana_backup"}
   /S4/&&/HANA/&&/LANG/{_sap_file_type="sap_s4hana_lang"}
   /S4/&&/EXPORT/{_sap_file_type="sap_s4hana_export"}
   /BW4/&&/EXPORT/{_sap_file_type="sap_bw4hana_export"}
   /VCH/&&/\.SAR/{_sap_file_type="sap_vch_afl"}
   END{print _sap_file_type}')

   if [[ ${_FILE_TYPE}. != "look_inside." ]]; then
      printf "%-24s%s\n" "${_FILE_TYPE}" "${_FILE_OUTPUT}"
   else
      _FILE_TYPE=$(file "${_FILE}" | awk '
      BEGIN{_file_type="generic"}
      /RAR self-extracting archive/||/RAR archive data/{_file_type="rar"}
      /Zip archive data/{_file_type="zip"}
      /SAPCAR archive data/{_file_type="sapcar"}
      END{print _file_type}')
      if [[ ${_FILE_TYPE}. = "rar." ]]; then
         _list_content="lsar"
      elif [[ ${_FILE_TYPE}. = "zip." ]]; then
         _list_content="zipinfo -1"
      elif [[ ${_FILE_TYPE}. = "sapcar." ]]; then
         _list_content="sapcar -tvf"
      elif [[ ${_FILE_TYPE}. = "generic." ]]; then
         printf "%-24s%s\n" "sap_unknown" "${_FILE_OUTPUT}"
      fi

      if [[ ${_FILE_TYPE}. != "generic." ]]; then
         _SAP_FILE_TYPE=$(eval "${_list_content}" "${_FILE}" | awk '
         BEGIN{_sap_file_type="sap_unknown"}
         /BD_SYBASE_ASE/{_sap_file_type="sap_db_ase"}
         /MaxDB_7.9/{_sap_file_type="sap_db_maxdb"}
         /19cinstall.sh/||/OCL_LINUX_X86_64/{_sap_file_type="sap_db_oracle"}
         /db2setup/||/db6_update_client.sh/||/db2aese_c.lic/{_sap_file_type="sap_db_db2"}
         /DATA_UNITS\/EXPORT/{_sap_file_type="sap_ecc_export"}
         /EXP[0-9]/{_sap_file_type="sap_ecc_ides_export"}
         /DATA_UNITS\/EXP[0-9]/{_sap_file_type="sap_nwas_abap_export"}
         /DATA_UNITS\/JAVA_EXPORT_JDMP/{_sap_file_type="sap_nwas_java_export"}
         END{print _sap_file_type}')
         printf "%-24s%s\n" "${_SAP_FILE_TYPE}" "${_FILE_OUTPUT}"
      fi
   fi
done