Yandex Disk file uploader

yd_uploader.sh

#!/bin/bash

#
# article: http://neblog.info/skript-bekapa-na-yandeks-disk
#

# REST API: https://tech.yandex.ru/disk/api/reference/upload-docpage/

TOKEN=""
# NB: slash ending 
UPLOADING_PATH="/"

function parse_json()
{
    local output
    regex="(\"$1\":[\"]?)([^\",\}]+)([\"]?)"
    [[ $2 =~ $regex ]] && output=${BASH_REMATCH[2]}
    echo $output
}

function check_error()
{
    echo $(parse_json 'error' "${1}")
}

function file_upload()
{
    local path="path=${UPLOADING_PATH}${1}"
    local param="overwrite=true"
    local url="https://cloud-api.yandex.net:443/v1/disk/resources/upload"
    local json_out=`curl -s -H "Authorization: OAuth ${TOKEN}" -G ${url} --data-urlencode "${path}" --data "${param}"`
    
    local json_error=$(check_error "${json_out}")  
      
    if [[ $json_error == '' ]]; then
    	url=$(parse_json 'href' ${json_out})
    	
    	json_out=`curl -s -T ${1} -H "Authorization: OAuth ${TOKEN}" ${url}`
        json_error=$(check_error "$json_out")
        
        if [[ $json_error == '' ]]; then
            return 0;
        else 
            echo $json_error
            return 1; 
        fi
    else
        echo $json_error
        return 1  
    fi
}

function file_publish()
{
	local path="path=${UPLOADING_PATH}${1}"
    local url="https://cloud-api.yandex.net/v1/disk/resources/publish"
	local json_out=`curl -s -X PUT -H "Authorization: OAuth ${TOKEN}" -G ${url} --data-urlencode "${path}"`
	
	local json_error=$(check_error "${json_out}")  
      
    if [[ $json_error == '' ]]; then
        url=$(parse_json 'href' $json_out)
        json_out=`curl -s -H "Authorization: OAuth ${TOKEN}" ${url}`
        json_error=$(check_error "$json_out")
        
	    if [[ $json_error != '' ]];
	    then
		    echo $json_error
	    else
            echo $(parse_json 'public_url' $json_out)
            return 0
	    fi

	else
        echo $json_error
        return 1  
    fi
}

function file_delete()
{
	local path="path=${UPLOADING_PATH}${1}"
	local param="permanently=true"
    local url="https://cloud-api.yandex.net/v1/disk/resources"
	local json_out=`curl -s -X DELETE -H "Authorization: OAuth ${TOKEN}" -G ${url} --data-urlencode "${path}" --data "${param}"`
	
	json_error=$(check_error "$json_out")
	
	if [[ $json_error != '' ]];
	then
		echo "json_error: $json_error"
		return 1
	else
		return 0
	fi
}

function files_list() 
{
    local path="path=${UPLOADING_PATH}"
	local param="sort=created&limit=100"
    local url="https://cloud-api.yandex.net/v1/disk/resources"

    curl -s -H "Authorization: OAuth $TOKEN" -G ${url} --data-urlencode "${path}" --data "${param}" | tr "{},[]" "\n" | grep "name[[:graph:]]${1}" | cut -d: -f 2 | tr -d '"'
}

function usage
{
cat <<EOF
USAGE: $0 OPTIONS
OPTIONS:
  -h  Show this message
  -l  List of files
  -m  Mask of list files
  -f  <filename>  Specify filename
  -u  upload this file
  -p  publish this file
  -d  delete this file
EOF
}


# --------------- OPTIONS -------------
while getopts ":hlm:f:udp" opt; do
    case $opt in
	\?)
	    echo "Invalid option: -$OPTARG. $0 -h for help" >&2
	    exit 1
	    ;;
	:)
	    echo "Option -$OPTARG requires an argument." >&2
	    exit 1
	    ;;
	h)
	    usage
	    exit 1
	    ;;
	l)
		list=true;
		;;
	m)  
		mask="$(echo ${OPTARG} | tr -d '\\')"
		#echo "${mask}"
		#exit 1
		;;
	f)
	    filename=${OPTARG}

	    if [ ! -f ${filename} ];
	    then
		    echo "File not found: ${filename}" >&2
		    exit 1
	    fi
	    ;;
	u)
	    upload=true
	    ;;
	p)
        publish=true
        ;;
	d)
	    delete=true
	    ;;
    esac
done

# --------------- MAIN ----------------
if [[ "true" == ${list} ]]; then
	files_list ${mask}
fi

if [[ "true" == ${upload} ]]; then
	if [[ -z ${filename} ]]; then
	    usage
	    exit 1
	fi

	rc=$(file_upload ${filename}) || {
	    echo "json_error: $rc" >&2
	    exit 1
	}
fi

if [[ "true" == ${publish} ]]; then
	if [[ -z ${filename} ]]; then
	    usage
	    exit 1
	fi

	rc=$(file_publish ${filename}) && {
		echo "$rc" >&1
	} || {
	    echo "json_error: $rc" >&2
	    exit 1
	}
fi

if [[ "true" == ${delete} ]]; then
	if [[ -z ${filename} ]]; then
	    usage
	    exit 1
	fi

	rc=$(file_delete ${filename}) || {
	    echo "json_error: $rc" >&2
	    exit 1
	}
fi

exit 0