New script to check Owncloud version
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#!/bin/sh
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#
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# Purpose {{{
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## Create a temp file (to monitor) if an upgrade is available for Owncloud Core
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## project on Github or one of it's application.
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# 1. Get current version from APT repo (by default).
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# 1.b Or use version from version.php file (with --file-mode option).
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# 2. Get latest version from github repository.
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# 3. Compare current and new versions.
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# 4. …
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# 5. Create a temp file (to monitor) if an upgrade is available.
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#
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# 2023-03-04
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# }}}
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# How-to use {{{
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## 1. Needs releasetags script, in the same directory
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## cf. https://git.ipr.univ-rennes.fr/cellinfo/scripts/src/master/github/releasetags
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# wget https://git.ipr.univ-rennes.fr/cellinfo/scripts/raw/master/github/releasetags
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## 2. Create a cron job, eg :
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#00 20 * * * root /opt/repos/ipr.scripts/github/check.owncloud.update.sh
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## 2-1 Create a cron job to compare the current version from version.php file (default to: /var/www/owncloud/version.php)
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#00 20 * * * root /opt/repos/ipr.scripts/github/check.owncloud.update.sh --file-mode
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## 2-2 Create a cron job to compare the current version from version.php file on a specific location
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#00 20 * * * root /opt/repos/ipr.scripts/github/check.owncloud.update.sh --file /srv/www/owncloud/version.php
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## 3. Monitor the temp file : /tmp/.github.owncloud.upgrade
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# }}}
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# Flags {{{
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## Exit on error
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set -o errexit
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## Exit on unset var
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### Use "${VARNAME-}" to test a var that may not have been set
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set -o nounset
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## Pipeline command is treated as failed
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### Not available in POSIX sh − https://github.com/koalaman/shellcheck/wiki/SC3040
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#set -o pipefail
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## Help with debugging
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### Call the script by prefixing it with "TRACE=1 ./script.sh"
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if [ "${TRACE-0}" -eq 1 ]; then set -o xtrace; fi
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# }}}
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# Vars {{{
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PROGNAME=$(basename "${0}"); readonly PROGNAME
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PROGDIR=$(readlink --canonicalize-missing $(dirname "${0}")); readonly PROGDIR
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ARGS="${*}"; readonly ARGS
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readonly NBARGS="${#}"
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[ -z "${DEBUG-}" ] && DEBUG=1
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## Export DEBUG for sub-script
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export DEBUG
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## Default values for some vars
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readonly PACKAGE_NAME_DEFAULT="owncloud-complete-files"
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readonly VERSION_PHP_FILE_DEFAULT="/var/www/owncloud/version.php"
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readonly CHECK_MODE_DEFAULT="repository"
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## Colors
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readonly PURPLE='\033[1;35m'
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readonly RED='\033[0;31m'
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readonly RESET='\033[0m'
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readonly COLOR_DEBUG="${PURPLE}"
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# }}}
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usage() { # {{{
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cat <<- HELP
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usage: $PROGNAME [-d|-f|-h|-p|-r]
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Try to compare current version of installed Owncloud with latest version on Github.
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EXAMPLES :
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- Default - Check current version from installed package with APT repository (default package name: ${PACKAGE_NAME_DEFAULT})
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${PROGNAME}
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${PROGNAME} --repo-mode
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- Check current version from a specific .deb package name
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${PROGNAME} --package owncloud-server
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- Check current version from Owncloud's version.php file (default location: ${VERSION_PHP_FILE_DEFAULT})
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${PROGNAME} --file-mode
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- Check current version from Owncloud's version.php file on specific location (auto set file-mode)
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${PROGNAME} --file /srv/www/owncloud/version.php
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OPTIONS :
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-d,--debug
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Enable debug messages.
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--file-mode
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Get current Owncloud's version from version.php file.
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-f,--file
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Define version.php file location.
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Default: ${VERSION_PHP_FILE_DEFAULT}
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-h,--help
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Print this help message.
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-p,--package
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Define the .deb package name to parse.
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Default: ${PACKAGE_NAME_DEFAULT}
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-r,--repo-mode,--repo,--repository
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(default) Get current Owncloud's version of .deb package version from APT repository.
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HELP
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}
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# }}}
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debug_message() { # {{{
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local_debug_message="${1}"
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## Print message if DEBUG is enable (=0)
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_debug_message}"
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unset local_debug_message
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return 0
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}
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# }}}
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error_message() { # {{{
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local_error_message="${1}"
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local_error_code="${2}"
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## Print message
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printf '%b\n' "ERROR − ${PROGNAME} : ${RED}${local_error_message}${RESET}" >&2
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unset local_error_message
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exit "${local_error_code:=66}"
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}
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# }}}
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is_var_empty() { # {{{
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local_var_empty="${1}"
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debug_prefix="${2:-}"
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## Return False by default
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return_var_empty="1"
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debug_message "${debug_prefix}is_var_empty − Test var value (${1})."
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[ -z "${local_var_empty}" ] && return_var_empty="0"
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unset debug_prefix
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unset local_var_empty
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return "${return_var_empty}"
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}
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# }}}
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define_vars() { # {{{
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debug_message "-- define_vars BEGIN"
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## If repo_url wasn't defined {{{
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is_var_empty "${repo_url-}" "|| " \
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&& repo_url="https://github.com/owncloud/core" \
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&& debug_message "| define_vars − Use value (${RED}${repo_url}${COLOR_DEBUG}) for repo_url variable."
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## }}}
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## If package_name wasn't defined (argument) {{{
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## Use default value
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is_var_empty "${package_name-}" "|| " \
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&& debug_message "| define_vars − Use default value (${RED}${PACKAGE_NAME_DEFAULT}${COLOR_DEBUG}) for package_name variable." \
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&& package_name="${PACKAGE_NAME_DEFAULT}"
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## }}}
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## Get new_version from application repository {{{
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new_version=$("${PROGDIR}"/releasetags "${repo_url}" | grep -vE -- '(dev|rc)' | head -n1 | sed 's/v//g')
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if is_var_empty "${new_version-}" "|| "; then
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error_message "define_vars − Invalid value for ${package_name} new version (${new_version})." 1
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else
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debug_message "| define_vars − Get value (${RED}${new_version}${COLOR_DEBUG}) for new_version variable."
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fi
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## }}}
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## If new_version_file wasn't defined {{{
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is_var_empty "${new_version_file-}" "|| " \
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&& new_version_file="/tmp/.github.${package_name}.upgrade" \
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&& debug_message "| define_vars − Use value (${RED}${new_version_file}${COLOR_DEBUG}) for new_version_file variable."
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## }}}
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## If check_mode wasn't defined (argument) {{{
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## Use default value
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is_var_empty "${check_mode-}" "|| " \
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&& debug_message "| define_vars − Use default value (${RED}${CHECK_MODE_DEFAULT}${COLOR_DEBUG}) for check_mode variable." \
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&& check_mode="${CHECK_MODE_DEFAULT}"
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## }}}
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## Get current_version according to the check_mode {{{
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case "${check_mode}" in
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"repo"|"repository" ) ## Check current version from repository
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current_version=$(apt-cache policy -- "${package_name}" | awk '/Installed:/ {print $2}' | sed 's/.:\(.*\)-.*/\1/')
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;;
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"file" ) ## Check current version from installed .deb file
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current_version=$(sed --silent "s/^\$OC_VersionString = '\(.*\)';/\1/p" "${version_php_file}")
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;;
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* ) ## unknow mode
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error_message "define_vars − Invalid check mode: ${check_mode}. See help message with -h." 2
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;;
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esac
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## If current_version is empty
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is_var_empty "${current_version}" "|| " \
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&& error_message "define_vars − Error with current_version variable (${current_version}) for package (${package_name})." 2
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## }}}
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debug_message "-- define_vars END"
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}
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# }}}
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is_version_greater_than() { # {{{
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first_value="${1}"
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value_to_compare="${2}"
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debug_prefix="${3:-}"
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## Return False by default
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return_is_version_greater_than="1"
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debug_message "${debug_prefix}is_version_greater_than − \
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Is first value (${first_value}) greater than the second value (${value_to_compare})."
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if printf '%s\n' "${first_value}" "${value_to_compare}" | sort --check=quiet --version-sort; then
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debug_message "${debug_prefix}is_version_greater_than − ${first_value} <= ${value_to_compare} ."
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return_is_version_greater_than="1"
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else
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debug_message "${debug_prefix}is_version_greater_than − ${first_value} > ${value_to_compare} ."
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return_is_version_greater_than="0"
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fi
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unset first_value
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unset value_to_compare
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unset debug_prefix
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return "${return_is_version_greater_than}"
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}
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# }}}
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main() { # {{{
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debug_message "--- MAIN BEGIN"
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## Define all vars
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define_vars
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## Uncomment variable(s) to simulate different behaviour
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#current_version="10.13.2"
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#current_version="10.13.2-3+1.1"
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#new_version="10.19.2"
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debug_message "-- Test version BEGIN"
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## If new_version is greater than current_version {{{
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if is_version_greater_than "${new_version}" "${current_version}" "|| "; then
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debug_message "| Current version (${current_version}) is older than new one \
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(${new_version})."
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## }}}
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## If current version is uptodate {{{
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else
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debug_message "| Current version (${current_version}) seems uptodate \
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or newer than available version (${new_version})."
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### Ensure to remove any temp file and useless .deb files
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rm --force -- "${new_version_file}"
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### Exit
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debug_message "-- Test version END"
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debug_message "--- MAIN END"
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exit 0
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fi
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## }}}
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debug_message "-- Test version END"
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debug_message "--- MAIN END"
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# Exit
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exit 0
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}
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# }}}
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# Manage arguments # {{{
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# This code can't be in a function due to argument management
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if [ ! "${NBARGS}" -eq "0" ]; then
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manage_arg="0"
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## If the first argument ask for help (h|help|-h|-help|-*h|-*help) {{{
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if printf -- '%s' "${1-}" | grep --quiet --extended-regexp -- "^-*h(elp)?$"; then
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usage
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exit 0
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fi
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## }}}
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## If the first argument is not an option
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if ! printf -- '%s' "${1}" | grep --quiet --extended-regexp -- "^-+";
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then
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## Print help message and exit
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printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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fi
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# Parse all options (start with a "-") one by one
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while printf -- '%s' "${1-}" | grep --quiet --extended-regexp -- "^-+"; do
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case "${1}" in
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-d|--debug ) ## debug
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DEBUG=0
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debug_message "--- Manage argument BEGIN"
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;;
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-p|--package ) ## Define package_name
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## Move to the next argument
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shift
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## Define var
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readonly package_name="${1}"
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;;
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-f|--file ) ## Define version_php_file
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## Move to the next argument
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shift
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## Define var
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readonly version_php_file="${1}"
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## AND set check_mode to file mode
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readonly check_mode="file"
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;;
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--file-mode ) ## Define check_mode to file mode
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## Define var
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readonly check_mode="file"
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;;
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-r|--repo-mode|--repo|--repository ) ## Define check_mode to repo mode
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## Define var
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readonly check_mode="repo"
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;;
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* ) ## unknow option
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printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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;;
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esac
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debug_message "| ${RED}${1}${COLOR_DEBUG} option managed."
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## Move to the next argument
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shift
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manage_arg=$((manage_arg+1))
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done
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debug_message "| ${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
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else
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debug_message "| No arguments/options to manage."
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fi
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debug_message "--- Manage argument END"
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# }}}
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main
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# This should never be reach
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exit 255
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