140 lines
4.8 KiB
Bash
Executable File
140 lines
4.8 KiB
Bash
Executable File
#!/bin/bash
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#===============================================================================
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#
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# DIRECTORY:
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# /home/*/.local/share/nautilus/scripts/01-verify/
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# OR
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# /home/*/.gnome2/nautilus-sctipts/01-verify/ (deprecated)
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#
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# FILE:
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# 03-freetsa-verify
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#
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# USAGE:
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# Right klick on the first file of an EWF image and
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# choose this nautilus script from the context menu.
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#
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# OPTIONS:
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# none
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#
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# DESCRIPTION:
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# Verifies that the content of a log file has not been changed after a
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# specific date.
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#
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# REQUIREMENTS:
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# bash, zenity, curl and openssl
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#
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# BUGS:
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# ---
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#
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# NOTES:
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# Tested on
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# - Arch Linux
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#
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# AUTHOR:
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# Patrick Neumann, patrick@neumannsland.de
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#
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# COMPANY:
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# (privately)
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#
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# VERSION:
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# 0.9 (beta)
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#
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# LINK TO THE MOST CURRENT VERSIONS:
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# https://...
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#
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# CREATED:
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# 12.09.2020
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#
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# COPYRIGHT (C):
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# 2015-2020 - Patrick Neumann
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#
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# LICENSE:
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# WARRANTY:
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# TODO:
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# ---
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#
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# HISTORY:
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# 0.9 - Patrick Neumann - Initial (public) release
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#
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#===============================================================================
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#-------------------------------------------------------------------------------
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# Additional supported Distribution(s) (add before Library!).
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#-------------------------------------------------------------------------------
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SUPPORTED_OSR="arch"
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#-------------------------------------------------------------------------------
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# Check for library (casualscripter_nautilus-scripts_functions.sh).
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#-------------------------------------------------------------------------------
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readonly LIBRARY="${0%/*/*}/.casualscripter_nautilus-scripts_functions.sh"
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if [ ! -f "${LIBRARY}" ] ; then
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zenity --error \
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--text \
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"ERROR: casualscripter_nautilus-scripts_functions.sh MISSING!"
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exit 1
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fi
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source "${LIBRARY}"
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#-------------------------------------------------------------------------------
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# Checks (see library "casualscripter_nautilus-scripts_functions.sh").
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#-------------------------------------------------------------------------------
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check_dep "${BASENAME_BIN}" "coreutils"
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check_dep "${CURL_BIN}" "curl"
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check_dep "${OPENSSL_BIN}" "openssl"
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check_ext "${SOURCE}" "info|log|txt"
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check_tmp
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#-------------------------------------------------------------------------------
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# Ask user for a response file if default is missing.
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#-------------------------------------------------------------------------------
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if [ -r "${SOURCE}.tsr" ] ; then
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readonly RESPONSE_FILE="${SOURCE}.tsr"
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else
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readonly RESPONSE_FILE="$( ${ZENITY_BIN} --title="Select timestamp service response file (.tsr)" \
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--file-selection )"
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if [ -z "${RESPONSE_FILE}" ] ; then
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error_exit "no timestamp service response file (.tsr) choosen"
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fi
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fi
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#-------------------------------------------------------------------------------
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# Generate freetsa verify file, if necessary.
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#-------------------------------------------------------------------------------
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readonly CACERTURL="http://freetsa.org/files/cacert.pem"
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readonly PEMFILE="${DIRNAME}/freetsa-org-cacert.pem"
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readonly FREETSAVERIFY="${TMP}/freetsa-verify-$( ${BASENAME_BIN} "${SOURCE}" ).txt"
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if [ ! -f "${FREETSAVERIFY}" ] ; then
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${PRINTF_BIN} "Verified log file:\n %s\n\n" $( ${BASENAME_BIN} "${SOURCE}" ) > "${FREETSAVERIFY}"
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${CURL_BIN} -o "${PEMFILE}" "${CACERTURL}"
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${PRINTF_BIN} "URL to used certificate file of the Time Stamp Authority (freeTSA.org):\n %s\n\n" "${CACERTURL}" >> "${FREETSAVERIFY}"
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${PRINTF_BIN} "Used timestamp service response file (.tsr):\n %s\n\n" "$( ${BASENAME_BIN} "${RESPONSE_FILE}" )" >> "${FREETSAVERIFY}"
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${PRINTF_BIN} "Timestamp (date):\n %s\n\n" "$( ${OPENSSL_BIN} ts -reply -in "${RESPONSE_FILE}" -text 2>/dev/null | ${SED_BIN} -n '/Time stamp:/ s/Time stamp: // p' )" >> "${FREETSAVERIFY}"
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${PRINTF_BIN} "Output of 'openssl ts -verify' itself:\n " >> "${FREETSAVERIFY}"
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${OPENSSL_BIN} ts -verify -in "${RESPONSE_FILE}" -data "${SOURCE}" -CAfile "${PEMFILE}" 2>/dev/null >> "${FREETSAVERIFY}"
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fi
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#-------------------------------------------------------------------------------
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# Display content of the resultfile "freetsa-verify...txt".
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#-------------------------------------------------------------------------------
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display_resultfile "${FREETSAVERIFY}"
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exit 0
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