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#!/usr/bin/env sh
SELF_SOURCE="true"
# Functions that will used in core script
# posix functions
###################################################
# Convert bytes to human readable form
# Globals: None
# Required Arguments: 1
# ${1} = Positive integer ( bytes )
# Result: Print human readable form.
# Reference:
# https://unix.stackexchange.com/a/538015
###################################################
_bytes_to_human() {
b_bytes_to_human="$(printf "%.0f\n" "${1:-0}")" s_bytes_to_human=0
d_bytes_to_human='' type_bytes_to_human=''
while [ "${b_bytes_to_human}" -gt 1024 ]; do
d_bytes_to_human="$(printf ".%02d" $((b_bytes_to_human % 1024 * 100 / 1024)))"
b_bytes_to_human=$((b_bytes_to_human / 1024)) && s_bytes_to_human=$((s_bytes_to_human += 1))
done
j=0 && for i in B KB MB GB TB PB EB YB ZB; do
j="$((j += 1))" && [ "$((j - 1))" = "${s_bytes_to_human}" ] && type_bytes_to_human="${i}" && break
continue
done
printf "%s\n" "${b_bytes_to_human}${d_bytes_to_human} ${type_bytes_to_human}"
}
###################################################
# Check if debug is enabled and enable command trace
# Globals: 2 variables, 1 function
# Varibles - DEBUG, QUIET
# Function - _is_terminal
# Arguments: None
# Result: If DEBUG
# Present - Enable command trace and change print functions to avoid spamming.
# Absent - Disable command trace
# Check QUIET, then check terminal size and enable print functions accordingly.
###################################################
_check_debug() {
_print_center_quiet() { { [ $# = 3 ] && printf "%s\n" "${2}"; } || { printf "%s%s\n" "${2}" "${3}"; }; }
if [ -n "${DEBUG}" ]; then
set -x && PS4='-> '
_print_center() { { [ $# = 3 ] && printf "%s\n" "${2}"; } || { printf "%s%s\n" "${2}" "${3}"; }; }
_clear_line() { :; } && _newline() { :; }
else
if [ -z "${QUIET}" ]; then
# check if running in terminal and support ansi escape sequences
if _support_ansi_escapes; then
! COLUMNS="$(_get_columns_size)" || [ "${COLUMNS:-0}" -lt 45 ] 2>| /dev/null &&
_print_center() { { [ $# = 3 ] && printf "%s\n" "[ ${2} ]"; } || { printf "%s\n" "[ ${2}${3} ]"; }; }
export CURL_PROGRESS="-#" EXTRA_LOG="_print_center" CURL_PROGRESS_EXTRA="-#" SUPPORT_ANSI_ESCAPES="true"
else
_print_center() { { [ $# = 3 ] && printf "%s\n" "[ ${2} ]"; } || { printf "%s\n" "[ ${2}${3} ]"; }; }
_clear_line() { :; }
fi
_newline() { printf "%b" "${1}"; }
else
_print_center() { :; } && _clear_line() { :; } && _newline() { :; }
fi
set +x
fi
}
###################################################
# Check internet connection.
# Probably the fastest way, takes about 1 - 2 KB of data, don't check for more than 10 secs.
# Globals: 3 functions
# _print_center, _clear_line, _timeout
# Arguments: None
# Result: On
# Success - Nothing
# Error - print message and exit 1
###################################################
_check_internet() {
"${EXTRA_LOG}" "justify" "Checking Internet Connection.." "-"
if ! _timeout 10 curl -Is google.com --compressed; then
_clear_line 1
"${QUIET:-_print_center}" "justify" "Error: Internet connection" " not available." "="
exit 1
fi
_clear_line 1
}
###################################################
# Move cursor to nth no. of line and clear it to the begining.
# Globals: None
# Arguments: 1
# ${1} = Positive integer ( line number )
# Result: Read description
###################################################
_clear_line() {
printf "\e[%sA\e[2K" "${1}"
}
###################################################
# Alternative to dirname command
# Globals: None
# Arguments: 1
# ${1} = path of file or folder
# Result: read description
# Reference:
# https://github.com/dylanaraps/pure-sh-bible#file-paths
###################################################
_dirname() {
dir_dirname="${1:-.}"
dir_dirname="${dir_dirname%%"${dir_dirname##*[!/]}"}" && [ "${dir_dirname##*/*}" ] && dir_dirname=.
dir_dirname="${dir_dirname%/*}" && dir_dirname="${dir_dirname%%"${dir_dirname##*[!/]}"}"
printf '%s\n' "${dir_dirname:-/}"
}
###################################################
# Convert given time in seconds to readable form
# 110 to 1 minute(s) and 50 seconds
# Globals: None
# Arguments: 1
# ${1} = Positive Integer ( time in seconds )
# Result: read description
# Reference:
# https://stackoverflow.com/a/32164707
###################################################
_display_time() {
t_display_time="${1}" day_display_time="$((t_display_time / 60 / 60 / 24))"
hr_display_time="$((t_display_time / 60 / 60 % 24))" min_display_time="$((t_display_time / 60 % 60))" sec_display_time="$((t_display_time % 60))"
[ "${day_display_time}" -gt 0 ] && printf '%d days ' "${day_display_time}"
[ "${hr_display_time}" -gt 0 ] && printf '%d hrs ' "${hr_display_time}"
[ "${min_display_time}" -gt 0 ] && printf '%d minute(s) ' "${min_display_time}"
[ "${day_display_time}" -gt 0 ] || [ "${hr_display_time}" -gt 0 ] || [ "${min_display_time}" -gt 0 ] && printf 'and '
printf '%d seconds\n' "${sec_display_time}"
}
###################################################
# print column size
# use zsh or stty or tput
###################################################
_get_columns_size() {
{ command -v bash 1>| /dev/null && bash -c 'shopt -s checkwinsize && (: && :); printf "%s\n" "${COLUMNS}" 2>&1'; } ||
{ command -v zsh 1>| /dev/null && zsh -c 'printf "%s\n" "${COLUMNS}"'; } ||
{ command -v stty 1>| /dev/null && _tmp="$(stty size)" && printf "%s\n" "${_tmp##* }"; } ||
{ command -v tput 1>| /dev/null && tput cols; } ||
return 1
}
###################################################
# Fetch latest commit sha of release or branch
# Do not use github rest api because rate limit error occurs
# Globals: None
# Arguments: 3
# ${1} = "branch" or "release"
# ${2} = branch name or release name
# ${3} = repo name e.g labbots/google-drive-upload
# Result: print fetched sha
###################################################
_get_latest_sha() {
unset latest_sha_get_latest_sha raw_get_latest_sha
case "${1:-${TYPE}}" in
branch)
latest_sha_get_latest_sha="$(
raw_get_latest_sha="$(curl --compressed -s https://github.com/"${3:-${REPO}}"/commits/"${2:-${TYPE_VALUE}}".atom -r 0-2000)"
_tmp="$(printf "%s\n" "${raw_get_latest_sha}" | grep -o "Commit\\/.*<" -m1 || :)" && _tmp="${_tmp##*\/}" && printf "%s\n" "${_tmp%%<*}"
)"
;;
release)
latest_sha_get_latest_sha="$(
raw_get_latest_sha="$(curl -L --compressed -s https://github.com/"${3:-${REPO}}"/releases/"${2:-${TYPE_VALUE}}")"
_tmp="$(printf "%s\n" "${raw_get_latest_sha}" | grep "=\"/""${3:-${REPO}}""/commit" -m1 || :)" && _tmp="${_tmp##*commit\/}" && printf "%s\n" "${_tmp%%\"*}"
)"
;;
esac
printf "%b" "${latest_sha_get_latest_sha:+${latest_sha_get_latest_sha}\n}"
}
###################################################
# Method to extract specified field data from json
# Globals: None
# Arguments: 2
# ${1} - value of field to fetch from json
# ${2} - Optional, no of lines to parse for the given field in 1st arg
# ${3} - Optional, nth number of value from extracted values, default it 1.
# Input: file | pipe
# _json_value "Arguments" < file
# echo something | _json_value "Arguments"
# Result: print extracted value
###################################################
_json_value() {
{ [ "${2}" -gt 0 ] 2>| /dev/null && no_of_lines_json_value="${2}"; } || :
{ [ "${3}" -gt 0 ] 2>| /dev/null && num_json_value="${3}"; } || { ! [ "${3}" = all ] && num_json_value=1; }
# shellcheck disable=SC2086
_tmp="$(grep -o "\"${1}\"\:.*" ${no_of_lines_json_value:+-m} ${no_of_lines_json_value})" || return 1
printf "%s\n" "${_tmp}" | sed -e "s/.*\"""${1}""\"://" -e 's/[",]*$//' -e 's/["]*$//' -e 's/[,]*$//' -e "s/^ //" -e 's/^"//' -n -e "${num_json_value}"p || :
return 0
}
###################################################
# Print a text to center interactively and fill the rest of the line with text specified.
# This function is fine-tuned to this script functionality, so may appear unusual.
# Globals: 1 variable
# COLUMNS
# Arguments: 4
# If ${1} = normal
# ${2} = text to print
# ${3} = symbol
# If ${1} = justify
# If remaining arguments = 2
# ${2} = text to print
# ${3} = symbol
# If remaining arguments = 3
# ${2}, ${3} = text to print
# ${4} = symbol
# Result: read description
# Reference:
# https://gist.github.com/TrinityCoder/911059c83e5f7a351b785921cf7ecda
###################################################
_print_center() {
[ $# -lt 3 ] && printf "Missing arguments\n" && return 1
term_cols_print_center="${COLUMNS}"
type_print_center="${1}" filler_print_center=""
case "${type_print_center}" in
normal) out_print_center="${2}" && symbol_print_center="${3}" ;;
justify)
if [ $# = 3 ]; then
input1_print_center="${2}" symbol_print_center="${3}" to_print_print_center="" out_print_center=""
to_print_print_center="$((term_cols_print_center - 5))"
{ [ "${#input1_print_center}" -gt "${to_print_print_center}" ] && out_print_center="[ $(printf "%.${to_print_print_center}s\n" "${input1_print_center}")..]"; } ||
{ out_print_center="[ ${input1_print_center} ]"; }
else
input1_print_center="${2}" input2_print_center="${3}" symbol_print_center="${4}" to_print_print_center="" temp_print_center="" out_print_center=""
to_print_print_center="$((term_cols_print_center * 47 / 100))"
{ [ "${#input1_print_center}" -gt "${to_print_print_center}" ] && temp_print_center=" $(printf "%.${to_print_print_center}s\n" "${input1_print_center}").."; } ||
{ temp_print_center=" ${input1_print_center}"; }
to_print_print_center="$((term_cols_print_center * 46 / 100))"
{ [ "${#input2_print_center}" -gt "${to_print_print_center}" ] && temp_print_center="${temp_print_center}$(printf "%.${to_print_print_center}s\n" "${input2_print_center}").. "; } ||
{ temp_print_center="${temp_print_center}${input2_print_center} "; }
out_print_center="[${temp_print_center}]"
fi
;;
*) return 1 ;;
esac
str_len_print_center="${#out_print_center}"
[ "${str_len_print_center}" -ge "$((term_cols_print_center - 1))" ] && {
printf "%s\n" "${out_print_center}" && return 0
}
filler_print_center_len="$(((term_cols_print_center - str_len_print_center) / 2))"
i_print_center=1 && while [ "${i_print_center}" -le "${filler_print_center_len}" ]; do
filler_print_center="${filler_print_center}${symbol_print_center}" && i_print_center="$((i_print_center + 1))"
done
printf "%s%s%s" "${filler_print_center}" "${out_print_center}" "${filler_print_center}"
[ "$(((term_cols_print_center - str_len_print_center) % 2))" -ne 0 ] && printf "%s" "${symbol_print_center}"
printf "\n"
return 0
}
###################################################
# Check if script terminal supports ansi escapes
# Globals: 1 variable
# TERM
# Arguments: None
# Result: return 1 or 0
###################################################
_support_ansi_escapes() {
unset ansi_escapes
case "${TERM}" in
xterm* | rxvt* | urxvt* | linux* | vt* | screen*) ansi_escapes="true" ;;
esac
{ [ -t 2 ] && [ -n "${ansi_escapes}" ] && return 0; } || return 1
}
###################################################
# Alternative to timeout command
# Globals: None
# Arguments: 1 and rest
# ${1} = amount of time to sleep
# rest = command to execute
# Result: Read description
# Reference:
# https://stackoverflow.com/a/24416732
###################################################
_timeout() {
timeout_timeout="${1:?Error: Specify Timeout}" && shift
{
"${@}" &
child="${!}"
trap -- "" TERM
{
sleep "${timeout_timeout}"
kill -9 "${child}"
} &
wait "${child}"
} 2>| /dev/null 1>&2
}
###################################################
# Config updater
# Incase of old value, update, for new value add.
# Globals: None
# Arguments: 3
# ${1} = value name
# ${2} = value
# ${3} = config path
# Result: read description
###################################################
_update_config() {
[ $# -lt 3 ] && printf "Missing arguments\n" && return 1
value_name_update_config="${1}" value_update_config="${2}" config_path_update_config="${3}"
! [ -f "${config_path_update_config}" ] && : >| "${config_path_update_config}" # If config file doesn't exist.
chmod u+w "${config_path_update_config}"
printf "%s\n%s\n" "$(grep -v -e "^$" -e "^${value_name_update_config}=" "${config_path_update_config}" || :)" \
"${value_name_update_config}=\"${value_update_config}\"" >| "${config_path_update_config}"
chmod a-w-r-x,u+r "${config_path_update_config}"
}
###################################################
# Encode the given string to parse properly in network requests
# Globals: None
# Arguments: 1
# ${1} = string
# Result: print encoded string
# Reference:
# https://stackoverflow.com/a/41405682
###################################################
_url_encode() (
LC_ALL=C LANG=C
awk 'BEGIN {while (y++ < 125) z[sprintf("%c", y)] = y
while (y = substr(ARGV[1], ++j, 1))
q = y ~ /[[:alnum:]]_.!~*\47()-]/ ? q y : q sprintf("%%%02X", z[y])
print q}' "${1}"
)
###################################################
# Search for an existing file on gdrive with write permission.
# Globals: 3 variables, 2 functions
# Variables - API_URL, API_VERSION, ACCESS_TOKEN
# Functions - _url_encode, _json_value
# Arguments: 2
# ${1} = file name
# ${2} = root dir id of file
# Result: print file id else blank
# Reference:
# https://developers.google.com/drive/api/v3/search-files
###################################################
_check_existing_file() (
[ $# -lt 2 ] && printf "Missing arguments\n" && return 1
name_check_existing_file="${1##*/}" rootdir_check_existing_file="${2}"
unset query_check_existing_file response_check_existing_file id_check_existing_file
"${EXTRA_LOG}" "justify" "Checking if file" " exists on gdrive.." "-" 1>&2
query_check_existing_file="$(_url_encode "name='${name_check_existing_file}' and '${rootdir_check_existing_file}' in parents and trashed=false and 'me' in writers")"
response_check_existing_file="$(_api_request "${CURL_PROGRESS_EXTRA}" \
"${API_URL}/drive/${API_VERSION}/files?q=${query_check_existing_file}&fields=files(id,name,mimeType)&supportsAllDrives=true&includeItemsFromAllDrives=true" || :)" && _clear_line 1 1>&2
_clear_line 1 1>&2
{ printf "%s\n" "${response_check_existing_file}" | _json_value id 1 1 2>| /dev/null 1>&2 && printf "%s\n" "${response_check_existing_file}"; } || return 1
return 0
)
###################################################
# Copy/Clone a public gdrive file/folder from another/same gdrive account
# Globals: 6 variables, 2 functions
# Variables - API_URL, API_VERSION, CURL_PROGRESS, LOG_FILE_ID, QUIET, ACCESS_TOKEN
# Functions - _print_center, _check_existing_file, _json_value, _bytes_to_human, _clear_line
# Arguments: 5
# ${1} = update or upload ( upload type )
# ${2} = file id to upload
# ${3} = root dir id for file
# ${4} = name of file
# ${5} = size of file
# Result: On
# Success - Upload/Update file and export FILE_ID
# Error - return 1
# Reference:
# https://developers.google.com/drive/api/v2/reference/files/copy
###################################################
_clone_file() {
[ $# -lt 5 ] && printf "Missing arguments\n" && return 1
job_clone_file="${1}" file_id_clone_file="${2}" file_root_id_clone_file="${3}" name_clone_file="${4}" size_clone_file="${5}"
unset post_data_clone_file response_clone_file readable_size_clone_file && STRING="Cloned"
post_data_clone_file="{\"parents\": [\"${file_root_id_clone_file}\"]}"
readable_size_clone_file="$(printf "%s\n" "${size_clone_file}" | _bytes_to_human)"
_print_center "justify" "${name_clone_file} " "| ${readable_size_clone_file}" "="
if [ "${job_clone_file}" = update ]; then
unset file_check_json_clone_file
# Check if file actually exists.
if file_check_json_clone_file="$(_check_existing_file "${name_clone_file}" "${file_root_id_clone_file}")"; then
if [ -n "${SKIP_DUPLICATES}" ]; then
_collect_file_info "${file_check_json_clone_file}" "${name_clone_file}" || return 1
_clear_line 1
"${QUIET:-_print_center}" "justify" "${name_clone_file}" " already exists." "=" && return 0
else
_print_center "justify" "Overwriting file.." "-"
{ _file_id_clone_file="$(printf "%s\n" "${file_check_json_clone_file}" | _json_value id 1 1)" &&
post_data_clone_file="$(_drive_info "${_file_id_clone_file}" "parents,writersCanShare")"; } ||
{ _error_logging_upload "${name_clone_file}" "${post_data_clone_file:-${file_check_json_clone_file}}" || return 1; }
if [ "${_file_id_clone_file}" != "${file_id_clone_file}" ]; then
_api_request -s \
-X DELETE \
"${API_URL}/drive/${API_VERSION}/files/${_file_id_clone_file}?supportsAllDrives=true&includeItemsFromAllDrives=true" 2>| /dev/null 1>&2 || :
STRING="Updated"
else
_collect_file_info "${file_check_json_clone_file}" "${name_clone_file}" || return 1
fi
fi
else
_print_center "justify" "Cloning file.." "-"
fi
else
_print_center "justify" "Cloning file.." "-"
fi
# shellcheck disable=SC2086
response_clone_file="$(_api_request ${CURL_PROGRESS} \
-X POST \
-H "Content-Type: application/json; charset=UTF-8" \
-d "${post_data_clone_file}" \
"${API_URL}/drive/${API_VERSION}/files/${file_id_clone_file}/copy?supportsAllDrives=true&includeItemsFromAllDrives=true" || :)"
for _ in 1 2 3; do _clear_line 1; done
_collect_file_info "${response_clone_file}" "${name_clone_file}" || return 1
"${QUIET:-_print_center}" "justify" "${name_clone_file} " "| ${readable_size_clone_file} | ${STRING}" "="
return 0
}
###################################################
# Create/Check directory in google drive.
# Globals: 3 variables, 2 functions
# Variables - API_URL, API_VERSION, ACCESS_TOKEN
# Functions - _url_encode, _json_value
# Arguments: 2
# ${1} = dir name
# ${2} = root dir id of given dir
# Result: print folder id
# Reference:
# https://developers.google.com/drive/api/v3/folder
###################################################
_create_directory() {
[ $# -lt 2 ] && printf "Missing arguments\n" && return 1
dirname_create_directory="${1##*/}" rootdir_create_directory="${2}"
unset query_create_directory search_response_create_directory folder_id_create_directory
"${EXTRA_LOG}" "justify" "Creating GDRIVE DIR:" " ${dirname_create_directory}" "-" 1>&2
query_create_directory="$(_url_encode "mimeType='application/vnd.google-apps.folder' and name='${dirname_create_directory}' and trashed=false and '${rootdir_create_directory}' in parents")"
search_response_create_directory="$(_api_request "${CURL_PROGRESS_EXTRA}" \
"${API_URL}/drive/${API_VERSION}/files?q=${query_create_directory}&fields=files(id)&supportsAllDrives=true&includeItemsFromAllDrives=true" || :)" && _clear_line 1 1>&2
if ! folder_id_create_directory="$(printf "%s\n" "${search_response_create_directory}" | _json_value id 1 1)"; then
unset create_folder_post_data_create_directory create_folder_response_create_directory
create_folder_post_data_create_directory="{\"mimeType\": \"application/vnd.google-apps.folder\",\"name\": \"${dirname_create_directory}\",\"parents\": [\"${rootdir_create_directory}\"]}"
create_folder_response_create_directory="$(_api_request "${CURL_PROGRESS_EXTRA}" \
-X POST \
-H "Content-Type: application/json; charset=UTF-8" \
-d "${create_folder_post_data_create_directory}" \
"${API_URL}/drive/${API_VERSION}/files?fields=id&supportsAllDrives=true&includeItemsFromAllDrives=true" || :)" && _clear_line 1 1>&2
fi
_clear_line 1 1>&2
{ folder_id_create_directory="${folder_id_create_directory:-$(printf "%s\n" "${create_folder_response_create_directory}" | _json_value id 1 1)}" && printf "%s\n" "${folder_id_create_directory}"; } ||
{ printf "%s\n" "${create_folder_response_create_directory}" 1>&2 && return 1; }
return 0
}
###################################################
# Get information for a gdrive folder/file.
# Globals: 3 variables, 1 function
# Variables - API_URL, API_VERSION, ACCESS_TOKEN
# Functions - _json_value
# Arguments: 2
# ${1} = folder/file gdrive id
# ${2} = information to fetch, e.g name, id
# Result: On
# Success - print fetched value
# Error - print "message" field from the json
# Reference:
# https://developers.google.com/drive/api/v3/search-files
###################################################
_drive_info() {
[ $# -lt 2 ] && printf "Missing arguments\n" && return 1
folder_id_drive_info="${1}" fetch_drive_info="${2}"
unset search_response_drive_info
"${EXTRA_LOG}" "justify" "Fetching info.." "-" 1>&2
search_response_drive_info="$(_api_request "${CURL_PROGRESS_EXTRA}" \
"${API_URL}/drive/${API_VERSION}/files/${folder_id_drive_info}?fields=${fetch_drive_info}&supportsAllDrives=true&includeItemsFromAllDrives=true" || :)" && _clear_line 1 1>&2
_clear_line 1 1>&2
printf "%b" "${search_response_drive_info:+${search_response_drive_info}\n}"
return 0
}
###################################################
# Extract ID from a googledrive folder/file url.
# Globals: None
# Arguments: 1
# ${1} = googledrive folder/file url.
# Result: print extracted ID
###################################################
_extract_id() {
[ $# = 0 ] && printf "Missing arguments\n" && return 1
LC_ALL=C id_extract_id="${1}"
case "${id_extract_id}" in
*'drive.google.com'*'id='*) _tmp="${id_extract_id##*id=}" && _tmp="${_tmp%%\?*}" && id_extract_id="${_tmp%%\&*}" ;;
*'drive.google.com'*'file/d/'* | 'http'*'docs.google.com'*'/d/'*) _tmp="${id_extract_id##*\/d\/}" && _tmp="${_tmp%%\/*}" && _tmp="${_tmp%%\?*}" && id_extract_id="${_tmp%%\&*}" ;;
*'drive.google.com'*'drive'*'folders'*) _tmp="${id_extract_id##*\/folders\/}" && _tmp="${_tmp%%\?*}" && id_extract_id="${_tmp%%\&*}" ;;
esac
printf "%b" "${id_extract_id:+${id_extract_id}\n}"
}
###################################################
# Method to regenerate access_token ( also updates in config ).
# Make a request on https://www.googleapis.com/oauth2/""${API_VERSION}""/tokeninfo?access_token=${ACCESS_TOKEN} url and check if the given token is valid, if not generate one.
# Globals: 9 variables, 2 functions
# Variables - CLIENT_ID, CLIENT_SECRET, REFRESH_TOKEN, TOKEN_URL, CONFIG, API_URL, API_VERSION, QUIET, NO_UPDATE_TOKEN
# Functions - _update_config and _print_center
# Result: Update access_token and expiry else print error
###################################################
_get_access_token_and_update() {
RESPONSE="${1:-$(curl --compressed -s -X POST --data "client_id=${CLIENT_ID}&client_secret=${CLIENT_SECRET}&refresh_token=${REFRESH_TOKEN}&grant_type=refresh_token" "${TOKEN_URL}")}" || :
if ACCESS_TOKEN="$(printf "%s\n" "${RESPONSE}" | _json_value access_token 1 1)"; then
ACCESS_TOKEN_EXPIRY="$(($(date +"%s") + $(printf "%s\n" "${RESPONSE}" | _json_value expires_in 1 1) - 1))"
_update_config ACCESS_TOKEN "${ACCESS_TOKEN}" "${CONFIG}"
_update_config ACCESS_TOKEN_EXPIRY "${ACCESS_TOKEN_EXPIRY}" "${CONFIG}"
else
"${QUIET:-_print_center}" "justify" "Error: Something went wrong" ", printing error." "=" 1>&2
printf "%s\n" "${RESPONSE}" 1>&2
return 1
fi
return 0
}
###################################################
# Upload ( Create/Update ) files on gdrive.
# Interrupted uploads can be resumed.
# Globals: 8 variables, 10 functions
# Variables - API_URL, API_VERSION, QUIET, VERBOSE, VERBOSE_PROGRESS, CURL_PROGRESS, LOG_FILE_ID, ACCESS_TOKEN
# Functions - _url_encode, _json_value, _print_center, _bytes_to_human
# _generate_upload_link, _upload_file_from_uri, _log_upload_session, _remove_upload_session
# _full_upload, _collect_file_info
# Arguments: 3
# ${1} = update or upload ( upload type )
# ${2} = file to upload
# ${3} = root dir id for file
# Result: On
# Success - Upload/Update file and export FILE_ID
# Error - return 1
# Reference:
# https://developers.google.com/drive/api/v3/create-file
# https://developers.google.com/drive/api/v3/manage-uploads
# https://developers.google.com/drive/api/v3/reference/files/update
###################################################
_upload_file() {
[ $# -lt 3 ] && printf "Missing arguments\n" && return 1
job_upload_file="${1}" input_upload_file="${2}" folder_id_upload_file="${3}"
unset slug_upload_file inputname_upload_file extension_upload_file inputsize_upload_file readable_size_upload_file request_method_upload_file \
url_upload_file postdata_upload_file uploadlink_upload_file upload_body_upload_file mime_type_upload_file resume_args_upload_file
slug_upload_file="${input_upload_file##*/}"
inputname_upload_file="${slug_upload_file%.*}"
extension_upload_file="${slug_upload_file##*.}"
inputsize_upload_file="$(($(wc -c < "${input_upload_file}")))" && content_length_upload_file="${inputsize_upload_file}"
readable_size_upload_file="$(printf "%s\n" "${inputsize_upload_file}" | _bytes_to_human)"
# Handle extension-less files
[ "${inputname_upload_file}" = "${extension_upload_file}" ] && {
mime_type_upload_file="$(file --brief --mime-type "${input_upload_file}" || mimetype --output-format %m "${input_upload_file}")" 2>| /dev/null || {
"${QUIET:-_print_center}" "justify" "Error: file or mimetype command not found." "=" && printf "\n"
exit 1
}
}
_print_center "justify" "${slug_upload_file}" " | ${readable_size_upload_file}" "="
# Set proper variables for overwriting files
[ "${job_upload_file}" = update ] && {
unset file_check_json_upload_file
# Check if file actually exists, and create if not.
if file_check_json_upload_file="$(_check_existing_file "${slug_upload_file}" "${folder_id_upload_file}")"; then
if [ -n "${SKIP_DUPLICATES}" ]; then
# Stop upload if already exists ( -d/--skip-duplicates )
_collect_file_info "${file_check_json_upload_file}" "${slug_upload_file}" || return 1
_clear_line 1
"${QUIET:-_print_center}" "justify" "${slug_upload_file} already exists." "=" && return 0
else
request_method_upload_file="PATCH"
_file_id_upload_file="$(printf "%s\n" "${file_check_json_upload_file}" | _json_value id 1 1)" ||
{ _error_logging_upload "${slug_upload_file}" "${file_check_json_upload_file}" || return 1; }
url_upload_file="${API_URL}/upload/drive/${API_VERSION}/files/${_file_id_upload_file}?uploadType=resumable&supportsAllDrives=true&includeItemsFromAllDrives=true"
# JSON post data to specify the file name and folder under while the file to be updated
postdata_upload_file="{\"mimeType\": \"${mime_type_upload_file}\",\"name\": \"${slug_upload_file}\",\"addParents\": [\"${folder_id_upload_file}\"]}"
STRING="Updated"
fi
else
job_upload_file="create"
fi
}
# Set proper variables for creating files
[ "${job_upload_file}" = create ] && {
url_upload_file="${API_URL}/upload/drive/${API_VERSION}/files?uploadType=resumable&supportsAllDrives=true&includeItemsFromAllDrives=true"
request_method_upload_file="POST"
# JSON post data to specify the file name and folder under while the file to be created
postdata_upload_file="{\"mimeType\": \"${mime_type_upload_file}\",\"name\": \"${slug_upload_file}\",\"parents\": [\"${folder_id_upload_file}\"]}"
STRING="Uploaded"
}
__file_upload_file="${INFO_PATH}/${slug_upload_file}__::__${folder_id_upload_file}__::__${inputsize_upload_file}"
# https://developers.google.com/drive/api/v3/manage-uploads
if [ -r "${__file_upload_file}" ]; then
uploadlink_upload_file="$(cat "${__file_upload_file}" || :)"
http_code_upload_file="$(curl --compressed -s -X PUT "${uploadlink_upload_file}" -o /dev/null --write-out %"{http_code}")" || :
case "${http_code_upload_file}" in
308) # Active Resumable URI give 308 status
uploaded_range_upload_file="$(raw_upload_file="$(curl --compressed -s -X PUT \
-H "Content-Range: bytes */${content_length_upload_file}" \
--url "${uploadlink_upload_file}" --globoff -D - || :)" &&
printf "%s\n" "${raw_upload_file##*[R,r]ange: bytes=0-}" | while read -r line; do printf "%s\n" "${line%%$(printf '\r')}" && break; done)"
if [ "${uploaded_range_upload_file}" -gt 0 ] 2>| /dev/null; then
_print_center "justify" "Resuming interrupted upload.." "-" && _newline "\n"
content_range_upload_file="$(printf "bytes %s-%s/%s\n" "$((uploaded_range_upload_file + 1))" "$((inputsize_upload_file - 1))" "${inputsize_upload_file}")"
content_length_upload_file="$((inputsize_upload_file - $((uploaded_range_upload_file + 1))))"
# Resuming interrupted uploads needs http1.1
resume_args1='-s' resume_args2='--http1.1' resume_args3="Content-Range: ${content_range_upload_file}"
_upload_file_from_uri _clear_line
_collect_file_info "${upload_body_upload_file}" "${slug_upload_file}" || return 1
_normal_logging_upload
_remove_upload_session
else
_full_upload || return 1
fi
;;
4[0-9][0-9] | 000) # Dead Resumable URI give 40* status
_full_upload || return 1
;;
201 | 200) # Completed Resumable URI give 20* status
upload_body_upload_file="${http_code_upload_file}"
_collect_file_info "${upload_body_upload_file}" "${slug_upload_file}" || return 1
_normal_logging_upload
_remove_upload_session
;;
esac
else
_full_upload || return 1
fi
return 0
}
###################################################
# Sub functions for _upload_file function - Start
# generate resumable upload link
_generate_upload_link() {
"${EXTRA_LOG}" "justify" "Generating upload link.." "-" 1>&2
uploadlink_upload_file="$(_api_request "${CURL_PROGRESS_EXTRA}" \
-X "${request_method_upload_file}" \
-H "Content-Type: application/json; charset=UTF-8" \
-H "X-Upload-Content-Type: ${mime_type_upload_file}" \
-H "X-Upload-Content-Length: ${inputsize_upload_file}" \
-d "$postdata_upload_file" \
"${url_upload_file}" \
-D - || :)" && _clear_line 1 1>&2
_clear_line 1 1>&2
case "${uploadlink_upload_file}" in
*'ocation: '*'upload_id'*) uploadlink_upload_file="$(printf "%s\n" "${uploadlink_upload_file##*[L,l]ocation: }" | while read -r line; do printf "%s\n" "${line%%$(printf '\r')}" && break; done)" && return 0 ;;
'' | *) return 1 ;;
esac
return 0
}
# Curl command to push the file to google drive.
_upload_file_from_uri() {
_print_center "justify" "Uploading.." "-"
# shellcheck disable=SC2086 # Because unnecessary to another check because ${CURL_PROGRESS} won't be anything problematic.
upload_body_upload_file="$(_api_request ${CURL_PROGRESS} \
-X PUT \
-H "Content-Type: ${mime_type_upload_file}" \
-H "Content-Length: ${content_length_upload_file}" \
-H "Slug: ${slug_upload_file}" \
-T "${input_upload_file}" \
-o- \
--url "${uploadlink_upload_file}" \
--globoff \
${CURL_SPEED} ${resume_args1} ${resume_args2} \
-H "${resume_args3}" || :)"
[ -z "${VERBOSE_PROGRESS}" ] && for _ in 1 2; do _clear_line 1; done && "${1:-:}"
return 0
}
# logging in case of successful upload
_normal_logging_upload() {
[ -z "${VERBOSE_PROGRESS}" ] && _clear_line 1
"${QUIET:-_print_center}" "justify" "${slug_upload_file} " "| ${readable_size_upload_file} | ${STRING}" "="
return 0
}
# Tempfile Used for resuming interrupted uploads
_log_upload_session() {
[ "${inputsize_upload_file}" -gt 1000000 ] && printf "%s\n" "${uploadlink_upload_file}" >| "${__file_upload_file}"
return 0
}
# remove upload session
_remove_upload_session() {
rm -f "${__file_upload_file}"
return 0
}
# wrapper to fully upload a file from scratch
_full_upload() {
_generate_upload_link || { _error_logging_upload "${slug_upload_file}" "${uploadlink_upload_file}" || return 1; }
_log_upload_session
_upload_file_from_uri
_collect_file_info "${upload_body_upload_file}" "${slug_upload_file}" || return 1
_normal_logging_upload
_remove_upload_session
return 0
}
# Sub functions for _upload_file function - End
###################################################
###################################################
# Share a gdrive file/folder
# Globals: 3 variables, 4 functions
# Variables - API_URL, API_VERSION, ACCESS_TOKEN
# Functions - _url_encode, _json_value, _print_center, _clear_line
# Arguments: 2
# ${1} = gdrive ID of folder/file
# ${2} = Email to which file will be shared ( optional )
# Result: read description
# Reference:
# https://developers.google.com/drive/api/v3/manage-sharing
###################################################
_share_id() {
[ $# -lt 2 ] && printf "Missing arguments\n" && return 1
id_share_id="${1}" share_email_share_id="${2}" role_share_id="reader" type_share_id="${share_email_share_id:+user}"
unset post_data_share_id response_share_id
"${EXTRA_LOG}" "justify" "Sharing.." "-" 1>&2
post_data_share_id="{\"role\":\"${role_share_id}\",\"type\":\"${type_share_id:-anyone}\"${share_email_share_id:+,\\\"emailAddress\\\":\\\"${share_email_share_id}\\\"}}"
response_share_id="$(_api_request "${CURL_PROGRESS_EXTRA}" \
-X POST \
-H "Content-Type: application/json; charset=UTF-8" \
-d "${post_data_share_id}" \
"${API_URL}/drive/${API_VERSION}/files/${id_share_id}/permissions?supportsAllDrives=true&includeItemsFromAllDrives=true" || :)" && _clear_line 1 1>&2
_clear_line 1 1>&2
{ printf "%s\n" "${response_share_id}" | _json_value id 1 1 2>| /dev/null 1>&2 && return 0; } ||
{ printf "%s\n" "Error: Cannot Share." 1>&2 && printf "%s\n" "${response_share_id}" 1>&2 && return 1; }
}
# shellcheck source=/dev/null
###################################################
# A simple wrapper to check tempfile for access token and make authorized oauth requests to drive api
###################################################
_api_request() {
. "${TMPFILE}_ACCESS_TOKEN"
curl --compressed \
-H "Authorization: Bearer ${ACCESS_TOKEN}" \
"${@}"
}
###################################################
# Used in collecting file properties from output json after a file has been uploaded/cloned
# Also handles logging in log file if LOG_FILE_ID is set
# Globals: 1 variables, 2 functions
# Variables - LOG_FILE_ID
# Functions - _error_logging_upload, _json_value
# Arguments: 1
# ${1} = output jsom
# Result: set fileid and link, save info to log file if required
###################################################
_collect_file_info() {
json_collect_file_info="${1}" info_collect_file_info=""
FILE_ID="$(printf "%s\n" "${json_collect_file_info}" | _json_value id 1 1)" || { _error_logging_upload "${2}" "${json_collect_file_info}" || return 1; }
{ [ -z "${LOG_FILE_ID}" ] || [ -d "${LOG_FILE_ID}" ]; } && return 0
info_collect_file_info="Link: https://drive.google.com/open?id=${FILE_ID}
Name: $(printf "%s\n" "${json_collect_file_info}" | _json_value name 1 1 || :)
ID: ${FILE_ID}
Type: $(printf "%s\n" "${json_collect_file_info}" | _json_value mimeType 1 1 || :)"
printf "%s\n\n" "${info_collect_file_info}" >> "${LOG_FILE_ID}"
return 0
}
###################################################
# Error logging wrapper
###################################################
_error_logging_upload() {
log_error_logging_upload="${2}"
"${QUIET:-_print_center}" "justify" "Upload ERROR" ", ${1:-} not ${STRING:-uploaded}." "=" 1>&2
case "${log_error_logging_upload}" in
# https://github.com/rclone/rclone/issues/3857#issuecomment-573413789
*'"message": "User rate limit exceeded."'*)
printf "%s\n\n%s\n" "${log_error_logging_upload}" \
"Today's upload limit reached for this account. Use another account to upload or wait for tomorrow." 1>&2
# Never retry if upload limit reached
export RETRY=0
;;
'' | *) printf "%s\n" "${log_error_logging_upload}" 1>&2 ;;
esac
printf "\n\n\n" 1>&2
return 1
}
###################################################
# A small function to get rootdir id for files in sub folder uploads
# Globals: 1 variable, 1 function
# Variables - DIRIDS
# Functions - _dirname
# Arguments: 1
# ${1} = filename
# Result: read discription
###################################################
_get_rootdir_id() {
file_gen_final_list="${1:?Error: give filename}"
rootdir_gen_final_list="$(_dirname "${file_gen_final_list}")"
temp_gen_final_list="$(printf "%s\n" "${DIRIDS:?Error: DIRIDS Missing}" | grep -F "|:_//_:|${rootdir_gen_final_list}|:_//_:|" || :)"
printf "%s\n" "${temp_gen_final_list%%"|:_//_:|${rootdir_gen_final_list}|:_//_:|"}"
return 0
}
###################################################
# A extra wrapper for _upload_file function to properly handle retries
# also handle uploads in case uploading from folder
# Globals: 3 variables, 1 function
# Variables - RETRY, UPLOAD_MODE and ACCESS_TOKEN
# Functions - _upload_file
# Arguments: 3
# ${1} = parse or norparse
# ${2} = file path
# ${3} = if ${1} != parse; gdrive folder id to upload; fi
# Result: set SUCCESS var on success
###################################################
_upload_file_main() {
[ $# -lt 2 ] && printf "Missing arguments\n" && return 1
file_upload_file_main="${2}" sleep_upload_file_main=0
{ [ "${1}" = parse ] && dirid_upload_file_main="$(_get_rootdir_id "${file_upload_file_main}")"; } || dirid_upload_file_main="${3}"
retry_upload_file_main="${RETRY:-0}" && unset RETURN_STATUS
until [ "${retry_upload_file_main}" -le 0 ] && [ -n "${RETURN_STATUS}" ]; do
if [ -n "${4}" ]; then
{ _upload_file "${UPLOAD_MODE:-create}" "${file_upload_file_main}" "${dirid_upload_file_main}" 2>| /dev/null 1>&2 && RETURN_STATUS=1 && break; } || RETURN_STATUS=2
else
{ _upload_file "${UPLOAD_MODE:-create}" "${file_upload_file_main}" "${dirid_upload_file_main}" && RETURN_STATUS=1 && break; } || RETURN_STATUS=2
fi
# decrease retry using -=, skip sleep if all retries done
[ "$((retry_upload_file_main -= 1))" -lt 1 ] && sleep "$((sleep_upload_file_main += 1))"
# on every retry, sleep the times of retry it is, e.g for 1st, sleep 1, for 2nd, sleep 2
continue
done
[ -n "${4}" ] && {
{ [ "${RETURN_STATUS}" = 1 ] && printf "%s\n" "${file_upload_file_main}"; } || printf "%s\n" "${file_upload_file_main}" 1>&2
}
return 0
}
###################################################
# Upload all files in the given folder, parallelly or non-parallely and show progress
# Globals: 7 variables, 3 functions
# Variables - VERBOSE, VERBOSE_PROGRESS, NO_OF_PARALLEL_JOBS, NO_OF_FILES, TMPFILE, UTILS_FOLDER and QUIET
# Functions - _clear_line, _newline, _print_center and _upload_file_main
# Arguments: 4
# ${1} = parallel or normal
# ${2} = parse or norparse
# ${3} = filenames with full path
# ${4} = if ${2} != parse; then gdrive folder id to upload; fi
# Result: read discription, set SUCCESS_STATUS & ERROR_STATUS
###################################################
_upload_folder() {
[ $# -lt 3 ] && printf "Missing arguments\n" && return 1
mode_upload_folder="${1}" PARSE_MODE="${2}" files_upload_folder="${3}" ID="${4:-}" && export PARSE_MODE ID
unset SUCCESS_STATUS SUCCESS_FILES ERROR_STATUS ERROR_FILES
case "${mode_upload_folder}" in
normal)
[ "${PARSE_MODE}" = parse ] && _clear_line 1 && _newline "\n"
while read -r file <&4; do
_upload_file_main "${PARSE_MODE}" "${file}" "${ID}"
{ [ "${RETURN_STATUS}" = 1 ] && : "$((SUCCESS_STATUS += 1))" && SUCCESS_FILES="$(printf "%b\n" "${SUCCESS_STATUS:+${SUCCESS_STATUS}\n}${file}")"; } ||
{ : "$((ERROR_STATUS += 1))" && ERROR_FILES="$(printf "%b\n" "${ERROR_STATUS:+${ERROR_STATUS}\n}${file}")"; }
if [ -n "${VERBOSE:-${VERBOSE_PROGRESS}}" ]; then
_print_center "justify" "Status: ${SUCCESS_STATUS} Uploaded" " | ${ERROR_STATUS} Failed" "=" && _newline "\n"
else
for _ in 1 2; do _clear_line 1; done
_print_center "justify" "Status: ${SUCCESS_STATUS} Uploaded" " | ${ERROR_STATUS} Failed" "="
fi
done 4<< EOF
$(printf "%s\n" "${files_upload_folder}")
EOF
;;
parallel)
NO_OF_PARALLEL_JOBS_FINAL="$((NO_OF_PARALLEL_JOBS > NO_OF_FILES ? NO_OF_FILES : NO_OF_PARALLEL_JOBS))"
[ -f "${TMPFILE}"SUCCESS ] && rm "${TMPFILE}"SUCCESS
[ -f "${TMPFILE}"ERROR ] && rm "${TMPFILE}"ERROR
# shellcheck disable=SC2016
(printf "%s\n" "${files_upload_folder}" | xargs -n1 -P"${NO_OF_PARALLEL_JOBS_FINAL}" -I {} sh -c '
eval "${SOURCE_UTILS}"
_upload_file_main "${PARSE_MODE}" "{}" "${ID}" true
' 1>| "${TMPFILE}"SUCCESS 2>| "${TMPFILE}"ERROR) &
pid="${!}"
until [ -f "${TMPFILE}"SUCCESS ] || [ -f "${TMPFILE}"ERORR ]; do sleep 0.5; done
[ "${PARSE_MODE}" = parse ] && _clear_line 1
_newline "\n"
until ! kill -0 "${pid}" 2>| /dev/null 1>&2; do
SUCCESS_STATUS="$(($(wc -l < "${TMPFILE}"SUCCESS)))"
ERROR_STATUS="$(($(wc -l < "${TMPFILE}"ERROR)))"
sleep 1
[ "$((SUCCESS_STATUS + ERROR_STATUS))" != "${TOTAL}" ] &&
_clear_line 1 && "${QUIET:-_print_center}" "justify" "Status" ": ${SUCCESS_STATUS} Uploaded | ${ERROR_STATUS} Failed" "="
TOTAL="$((SUCCESS_STATUS + ERROR_STATUS))"
done
SUCCESS_STATUS="$(($(wc -l < "${TMPFILE}"SUCCESS)))" SUCCESS_FILES="$(cat "${TMPFILE}"SUCCESS)"
ERROR_STATUS="$(($(wc -l < "${TMPFILE}"ERROR)))" ERROR_FILES="$(cat "${TMPFILE}"ERROR)"
export SUCCESS_FILES ERROR_FILES
;;
esac
return 0
}
# Upload a file to Google Drive
# shellcheck source=/dev/null
_usage() {
printf "%b" "
The script can be used to upload file/directory to google drive.\n
Usage:\n ${0##*/} [options.. ] <filename> <foldername>\n
Foldername argument is optional. If not provided, the file will be uploaded to preconfigured google drive.\n
File name argument is optional if create directory option is used.\n
Options:\n
-c | -C | --create-dir <foldername> - option to create directory. Will provide folder id. Can be used to provide input folder, see README.\n
-r | --root-dir <google_folderid> or <google_folder_url> - google folder ID/URL to which the file/directory is going to upload.
If you want to change the default value, then use this format, -r/--root-dir default=root_folder_id/root_folder_url\n
-s | --skip-subdirs - Skip creation of sub folders and upload all files inside the INPUT folder/sub-folders in the INPUT folder, use this along with -p/--parallel option to speed up the uploads.\n
-p | --parallel <no_of_files_to_parallely_upload> - Upload multiple files in parallel, Max value = 10.\n
-f | --[file|folder] - Specify files and folders explicitly in one command, use multiple times for multiple folder/files. See README for more use of this command.\n
-cl | --clone - Upload a gdrive file without downloading, require accessible gdrive link or id as argument.\n
-o | --overwrite - Overwrite the files with the same name, if present in the root folder/input folder, also works with recursive folders.\n
-d | --skip-duplicates - Do not upload the files with the same name, if already present in the root folder/input folder, also works with recursive folders.\n
-S | --share <optional_email_address>- Share the uploaded input file/folder, grant reader permission to provided email address or to everyone with the shareable link.\n
--speed 'speed' - Limit the download speed, supported formats: 1K, 1M and 1G.\n
-i | --save-info <file_to_save_info> - Save uploaded files info to the given filename.\n
-z | --config <config_path> - Override default config file with custom config file.\nIf you want to change default value, then use this format -z/--config default=default=your_config_file_path.\n
-q | --quiet - Supress the normal output, only show success/error upload messages for files, and one extra line at the beginning for folder showing no. of files and sub folders.\n
-R | --retry 'num of retries' - Retry the file upload if it fails, postive integer as argument. Currently only for file uploads.\n
-in | --include 'pattern' - Only include the files with the given pattern to upload - Applicable for folder uploads.\n
e.g: ${0##*/} local_folder --include "*1*", will only include with files with pattern '1' in the name.\n
-ex | --exclude 'pattern' - Exclude the files with the given pattern from uploading. - Applicable for folder uploads.\n
e.g: ${0##*/} local_folder --exclude "*1*", will exclude all the files pattern '1' in the name.\n
--hide - This flag will prevent the script to print sensitive information like root folder id and drivelink.\n
-v | --verbose - Display detailed message (only for non-parallel uploads).\n
-V | --verbose-progress - Display detailed message and detailed upload progress(only for non-parallel uploads).\n
--skip-internet-check - Do not check for internet connection, recommended to use in sync jobs.\n
$([ "${GUPLOAD_INSTALLED_WITH}" = script ] && printf '%s\n' '\n -u | --update - Update the installed script in your system.\n
-U | --uninstall - Uninstall script, remove related files.\n')
--info - Show detailed info, only if script is installed system wide.\n
-D | --debug - Display script command trace.\n
-h | --help - Display this message.\n"
exit 0
}
_short_help() {
printf "No valid arguments provided, use -h/--help flag to see usage.\n"
exit 0
}
###################################################
# Print the contents of info file if scipt is installed system wide.
# Path is INFO_FILE="${HOME}/.google-drive-upload/google-drive-upload.info"
# Globals: 1 variable
# INFO_FILE
# Arguments: None
# Result: read description
###################################################
_version_info() {
if command -v "${COMMAND_NAME}" 1> /dev/null && [ -n "${REPO:+${COMMAND_NAME:+${INSTALL_PATH:+${TYPE:+${TYPE_VALUE}}}}}" ]; then
for i in REPO INSTALL_PATH INSTALLATION TYPE TYPE_VALUE LATEST_INSTALLED_SHA CONFIG; do
printf "%s\n" "${i}=\"$(eval printf "%s" \"\$"${i}"\")\""
done | sed -e "s/=/: /g"
else
printf "%s\n" "google-drive-upload is not installed system wide."
fi
exit 0
}
###################################################
# Function to cleanup config file
# Remove invalid access tokens on the basis of corresponding expiry
# Globals: None
# Arguments: 1
# ${1} = config file
# Result: read description
###################################################