Improve Zoom script
Manage arguments. Better versions comparison.
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@ -5,11 +5,12 @@
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## It's based on .deb package installation to check the current version.
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## It can also compare the current available version in APT repositories
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## if "repo" is given as first argument.
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## If a new version is available, the script will try to download it.
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## How-to use {{{
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### 1. Create a cron job, eg :
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#00 20 * * * root /opt/repos/ipr.scripts/app/check.zoom.update
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### 2-1 Create a cron job to compare the version available in an APT repository :
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#00 20 * * * root /opt/repos/ipr.scripts/app/check.zoom.update repo
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#00 20 * * * root /opt/repos/ipr.scripts/app/check.zoom.update --mode repo
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### 2. Monitor the temp file : /tmp/.zoom.upgrade
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# Or enable MAILTO in cronjob and edit the script to print a message.
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# Or send a mail.
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@ -19,75 +20,223 @@
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## Inspired by https://github.com/pazepaze/zoom-autoupdater/blob/master/autoupdate-zoom.sh
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# }}}
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# Expect maximum 1 argument {{{
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if [ $# -gt 1 ]
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then
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# Vars {{{
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PROGNAME=$(basename "${0}"); readonly PROGNAME
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PROGDIR=$(readlink -m $(dirname "${0}")); readonly PROGDIR
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ARGS="${*}"; readonly ARGS
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readonly NBARGS="${#}"
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[ -z "${DEBUG}" ] && DEBUG=1
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## Export DEBUG for sub-script
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export DEBUG
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## Default values for some vars
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CHECK_MODE_DEFAULT="file"
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## Colors
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readonly PURPLE='\033[1;35m'
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readonly RED='\033[0;31m'
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readonly RESET='\033[0m'
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readonly COLOR_DEBUG="${PURPLE}"
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# }}}
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usage() { # {{{
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cat << HELP
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check.zoom.update --
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usage: $PROGNAME [check_mode] [-m|-d|-h]
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Compare current version of an installed Zoom client and the last available.
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EXAMPLE :
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- Compare the current version installed from .deb file
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check.zoom.update
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EXAMPLES :
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- Compare the current version of Zoom installed from a .deb file
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${PROGNAME}
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${PROGNAME} --mode file
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- Compare the current version from apt's repository
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check.zoom.update repo
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- Compare the current version of Zoom available in the APT repo
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${PROGNAME} repo
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${PROGNAME} --mode repo
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OPTIONS :
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-m,--mode
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Set the check_mode to use to get current version of Zoom client
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Available mode :
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* repo
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* file (default behaviour)
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-d,--debug
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Enable debug messages.
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-h,--help
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Print this help message.
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HELP
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exit 1
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fi
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}
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# }}}
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debug_message() { # {{{
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# Vars {{{
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DEBUG=1
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local_debug_message="${1}"
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if [ $# -eq 1 ] && [ "${1}" = "repo" ] ## If repository's version should be compared
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then
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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}${RESET}"
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unset local_error_message
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exit "${local_error_code:=66}"
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}
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# }}}
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is_var_empty() { # {{{
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## Return False by default
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return_var_empty="1"
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## Total number of variables to test
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local_total_var_empty="${#}"
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loop_count_var_empty="0"
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## While it remains a variable to test
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while [ "${local_total_var_empty}" -gt "${loop_count_var_empty}" ]; do
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debug_message "is_var_empty − \
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Test var: ${1}."
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### Test if this is empty and set return value to True
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[ -z "${1}" ] && return_var_empty="0"
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### Increase the number of tested variables
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loop_count_var_empty=$((loop_count_var_empty+1))
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### Shift to the next variable
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shift
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done
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unset local_total_var_empty
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unset loop_count_var_empty
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return "${return_var_empty}"
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}
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# }}}
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define_vars() { # {{{
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## If check_mode wasn't defined (argument) {{{
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## Use default value
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is_var_empty "${check_mode}" \
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&& debug_message "define_vars − Use default value (${CHECK_MODE_DEFAULT}) for check_mode variable." \
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&& check_mode="${CHECK_MODE_DEFAULT}"
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## }}}
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## Get zoom_current_version according to the check_mode {{{
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case "${check_mode}" in
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"repo" ) ## Check zoom version from repository
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zoom_current_version=$(apt-cache policy -- zoom | awk '/Candidate:/ {print $2}' | sed 's/.:\(.*\)-.*/\1/')
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else
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;;
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"file" ) ## Check zoom version from installed .deb file
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zoom_current_version=$(dpkg --list -- zoom | awk '/^ii *zoom/ {print $3}' | sed 's/.:\(.*\)-.*/\1/')
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fi
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;;
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* ) ## unknow mode
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error_message "define_vars − Invalid check mode: ${check_mode}" 1
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printf '%b\n' "---"
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usage
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exit 1
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;;
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esac
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zoom_new_version=$(curl --silent 'https://zoom.us/support/download' --header 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36' | grep "class=\"linux-ver-text\"" | sed -e 's/.*Version \(.*\)<.*/\1/')
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zoom_new_version_major=$(echo "${zoom_new_version}" | sed -e 's/\(.*\) .*/\1/')
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zoom_new_version_minor=$(echo "${zoom_new_version}" | sed -e 's/.* (\(.*\))/\1/')
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## If zoom_current_version is empty
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is_var_empty "${zoom_current_version}" \
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&& error_message "define_vars − Error with zoom_current_version variable (${zoom_current_version})" 2
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zoom_new_version_file="/tmp/.zoom.upgrade"
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## }}}
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zoom_new_pkg_path="/tmp/zoom_${zoom_new_version_major}.${zoom_new_version_minor}_amd64.deb"
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zoom_tmp_pkg_path="/tmp/.zoom_${zoom_new_version_major}.${zoom_new_version_minor}_amd64.deb"
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## Zoom vars for new version {{{
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temp_zoom_new_version=$(curl --silent 'https://zoom.us/support/download' --header 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36' | grep "class=\"linux-ver-text\"" | sed -e 's/.*Version \(.*\)<.*/\1/')
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zoom_new_version_major=$(echo "${temp_zoom_new_version}" | sed -e 's/\(.*\) .*/\1/')
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zoom_new_version_minor=$(echo "${temp_zoom_new_version}" | sed -e 's/.* (\(.*\))/\1/')
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zoom_new_version="${zoom_new_version_major}.${zoom_new_version_minor}"
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is_var_empty "${temp_zoom_new_version}" "${zoom_new_version_major}" "${zoom_new_version_minor}" "${zoom_new_version}" \
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&& error_message "define_vars − Error with new version variables (temp_zoom_new_version: ${temp_zoom_new_version} ; zoom_new_version_major: ${zoom_new_version_major} ; zoom_new_version_minor: ${zoom_new_version_minor} ; zoom_new_version: ${zoom_new_version})." 3
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## }}}
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## Vars for temp files
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zoom_new_version_file="/tmp/.zoom.upgrade"
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zoom_new_pkg_path="/tmp/zoom_${zoom_new_version}_amd64.deb"
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zoom_tmp_pkg_path="/tmp/.zoom_${zoom_new_version}_amd64.deb"
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}
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# }}}
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is_version_greater_than() { # {{{
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first_value="${1}"
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value_to_compare="${2}"
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## Return False by default
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return_is_version_greater_than="1"
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debug_message "is_version_greater_than − \
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Is first value (${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 "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 "is_version_greater_than − ${first_value} > ${value_to_compare} ."
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return_is_version_greater_than="0"
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fi
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unset first_value
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unset value_to_compare
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return "${return_is_version_greater_than}"
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}
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# }}}
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# Check if the current version is the last one {{{
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if [ "${zoom_current_version}" != "${zoom_new_version_major}.${zoom_new_version_minor}" ]; then
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Test version — Current version (${zoom_current_version}) and new one (${zoom_new_version_major}.${zoom_new_version_minor}) seems to be different."
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main() { # {{{
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## If it doesn't already exists, download this new package
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define_vars
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# Behaviour can be tested by overriding this variable
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#zoom_current_version="66.11.4.2845"
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#zoom_current_version="${zoom_new_version}"
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#zoom_current_version="1.9.4.2845"
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if is_version_greater_than "${zoom_new_version}" "${zoom_current_version}"; then
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debug_message "Test version − \
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New version (${zoom_new_version}) seems more recent than the current one (${zoom_current_version})."
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## If it doesn't already exists, download the package for this new version
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if [ ! -f "${zoom_new_pkg_path}" ]; then
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Download .deb file from zoom.us to ${zoom_new_pkg_path} ."
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debug_message "Deb file − \
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Download .deb file from zoom.us to ${zoom_new_pkg_path} ."
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wget --quiet https://zoom.us/client/latest/zoom_amd64.deb --output-document="${zoom_new_pkg_path}"
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fi
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# Verify downloaded package {{{
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# Verify downloaded package
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# Check the version from dpkg info {{{
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zoom_dpkg_version=$(dpkg --info -- "${zoom_new_pkg_path}" | awk '/ Version/ { print $2 }')
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if [ "${zoom_dpkg_version}" = "${zoom_new_version_major}.${zoom_new_version_minor}" ]; then
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Check dpkg version — \
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New version and .deb file informations are correct."
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if [ "${zoom_dpkg_version}" = "${zoom_new_version}" ]; then
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debug_message "Check dpkg version − \
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New version and .deb file informations are similar."
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## Create a temp file to monitor
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touch -- "${zoom_new_version_file}"
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printf '\e[1;35m%-6s\e[m\n' "An upgrade is available for Zoom client (current : ${zoom_current_version}) : ${zoom_new_version_major}.${zoom_new_version_minor}." >> "${zoom_new_version_file}"
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printf '\e[1;35m%-6s\e[m\n' "An upgrade is available for Zoom client (current : ${zoom_current_version}) : ${zoom_new_version}." >> "${zoom_new_version_file}"
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## Exit
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exit 0
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else
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Check dpkg version — \
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debug_message "Check dpkg version − \
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New version and .deb file informations mismatch, don't need to go further."
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# }}}
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# Remove useless file {{{
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## Ensure to remove the file to monitor
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rm --force -- "${zoom_new_version_file}"
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@ -100,16 +249,83 @@ New version and .deb file informations mismatch, don't need to go further."
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# }}}
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# }}}
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else
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Test version — The current version is up-to-date."
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else
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debug_message "Test version − The current version is the same or is more recent than the available one."
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## Ensure to remove any temp file and useless .deb file
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rm --force -- "${zoom_new_version_file}" "${zoom_new_pkg_path}" "${zoom_tmp_pkg_path}"
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## Exit
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exit 0
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fi
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fi
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# }}}
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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 arguments
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if [ ! "${NBARGS}" -eq "0" ]; then
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manage_arg="0"
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## If the first argument is not an option
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if ! printf -- '%s' "${1}" | grep --quiet --extended-regexp -- "^-+";
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then
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## Consider it as the mode to use to get current zoom version
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check_mode="${1}"
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## Move to the next argument
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shift
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manage_arg=$((manage_arg+1))
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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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-m|--mode ) ## Define check_mode
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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 check_mode="${1}"
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;;
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-d|--debug ) ## debug
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DEBUG=0
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;;
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-h|--help ) ## help
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usage
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## Exit after help informations
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exit 0
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;;
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-- ) ## End of options list
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## End the while loop
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break
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;;
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* ) ## unknow option
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printf '%b\n' "${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 "Arguments management − \
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${RED}${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 "Arguments management − \
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${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
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else
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debug_message "Arguments management − \
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No arguments/options to manage."
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fi
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# }}}
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main
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exit 255
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