Linux下无需任何SDK，一条shell命令搞定签名的上传和下载

感谢这位大侠
tmont.com/blargh/2014/1/uploading-to-s3-in-bash
实现了shell的签名上传
在这个基础上我做了一个OSS的上传和下载的shell命令，有兴趣的可以自己尝试下。

使用的前提条件：
就是必须安装了openssl和base64，curl这几个bianry，如果没有的，请自行搜索下安装
假如将以下代码保存为oss.sh
并将host，bucket，Id和Key替换成相应的OSS Host，Bucket，Id和Key

上传：
sh oss.sh put localfile objectname

成功的结果类似：

HTTP/1.1 200 OK
Date: Wed, 18 Mar 2015 12:55:23 GMT
Content-Length: 0
Connection: close
ETag: "A797938C31D59EDD08D86188F6D5B872"
Server: AliyunOSS
x-oss-request-id: 550975BB9215222B22015250

下载
sh oss.sh get objectname localfile


#!/bin/sh
host=需要修改
bucket=需要修改
Id=需要修改
Key=需要修改


method=$1
source=$2
dest=$3
if test -z "$method"
then
    method=GET
fi


if [ "get" = ${method} ] || [ "GET" = ${method} ]
then
    method=GET
elif [ "put" = ${method} ] || [ "PUT" = ${method} ]
then
    method=PUT
else
    method=GET
fi
if test -z "$dest"
then
    dest=$source
fi


if test -z "$method" || test -z "$source" || test -z "$dest"
then
    echo $0 put localfile objectname
    echo $0 get objectname localfile
    exit -1
fi


if [ "put" = ${method} ] || [ "PUT" = ${method} ]
then
    resource="/${bucket}/${dest}"
    contentType=`file -ib ${source} |awk -F ";" '{print $1}'`
    dateValue="`TZ=GMT date +'%a, %d %b %Y %H:%M:%S GMT'`"
    stringToSign="${method}\n\n${contentType}\n${dateValue}\n${resource}"
    signature=`echo -en ${stringToSign} | openssl sha1 -hmac ${Key} -binary | base64`
    url=http://${host}/${resource}
    echo "upload ${source} to ${url}"
    curl -i -q -X PUT -T "${source}" \
      -H "Host: ${host}" \
      -H "Date: ${dateValue}" \
      -H "Content-Type: ${contentType}" \
      -H "Authorization: OSS ${Id}:${signature}" \
      ${url}
else
    resource="/${bucket}/${source}"
    contentType=""
    dateValue="`TZ=GMT date +'%a, %d %b %Y %H:%M:%S GMT'`"
    stringToSign="${method}\n\n${contentType}\n${dateValue}\n${resource}"
    signature=`echo -en ${stringToSign} | openssl sha1 -hmac ${Key} -binary | base64`
    url=http://${host}/${resource}
    echo "download ${url} to ${dest}"
    curl --create-dirs \
      -H "Host: ${host}" \
      -H "Date: ${dateValue}" \
      -H "Content-Type: ${contentType}" \
      -H "Authorization: OSS ${Id}:${signature}" \
      ${url} -o ${dest}
fi