python|python 阿里云oss实现直传签名与回调验证的示例方法

签名

import base64import jsonimport timefrom datetime import datetimeimport hmacfrom hashlib import sha1access_key_id = ''# 请填写您的AccessKeySecret。access_key_secret = ''# host的格式为 bucketname.endpoint ,请替换为您的真实信息。host = ''# callback_url为 上传回调服务器的URL,请将下面的IP和Port配置为您自己的真实信息。callback_url = ""# 用户上传文件时指定的前缀。upload_dir = 'user-dir-prefix/'expire_time = 1200expire_syncpoint = int(time.time() + expire_time)policy_dict = {'expiration': datetime.utcfromtimestamp(expire_syncpoint).isoformat() + 'Z','conditions': [{"bucket": "test-paige"},['starts-with', '$key', 'user/test/']]}policy = json.dumps(policy_dict).strip()policy_encode = base64.b64encode(policy.encode())signature = base64.encodebytes(hmac.new(access_key_secret.encode(), policy_encode, sha1).digest())callback_dict = {'callbackUrl': callback_url,'callbackBody': 'filename=${object}&size=${size}&mimeType=${mimeType}&height=${imageInfo.height}&width=${''imageInfo.width}','callbackBodyType': 'application/json'}callback = base64.b64encode(json.dumps(callback_dict).strip().encode()).decode()var = {'accessid': access_key_id,'host': host,'policy': policy_encode.decode(),'signature': signature.decode().strip(),'expire': expire_syncpoint,'callback': callback}

回调验签

import asyncioimport base64import timeimport aiomysqlimport rsafrom aiohttp import web, ClientSessionfrom urllib import parseimport uuiddef success(msg='', data=https://www.it610.com/article/None):if data is None:data = {}dict_data = https://www.it610.com/article/{'code': 1,'msg': msg,'data': data}return web.json_response(dict_data)def failed(msg='', data=https://www.it610.com/article/None):if data is None:data = {}dict_data = https://www.it610.com/article/{'code': 0,'msg': msg,'data': data}return web.json_response(dict_data)async def handle(request):"""获取连接池:param web.BaseRequest request::return:"""authorization_base64 = request.headers['authorization']x_oss_pub_key_url_base64 = request.headers['x-oss-pub-key-url']pub_key_url = base64.b64decode(x_oss_pub_key_url_base64.encode())authorization = base64.b64decode(authorization_base64.encode())path = request.pathasync with ClientSession() as session:async with session.get(pub_key_url.decode()) as resp:pub_key_body = await resp.text()pubkey = rsa.PublicKey.load_pkcs1_openssl_pem(pub_key_body.encode())body = await request.content.read()auth_str = parse.unquote(path) + '\n' + body.decode()parse_url = parse.parse_qs(body.decode())print(parse_url)try:rsa.verify(auth_str.encode(), authorization, pubkey)pool = request.app['mysql_pool']async with pool.acquire() as conn:async with conn.cursor() as cur:id = str(uuid.uuid4())url = parse_url['filename'][0]mime = parse_url['mimeType'][0]disk = 'oss'time_at = time.strftime("%Y-%m-%d %H:%I:%S", time.localtime())sql = "INSERT INTO media(id,url,mime,disk,created_at,updated_at) VALUES(%s,%s,%s,%s,%s,%s)"await cur.execute(sql, (id, url, mime, disk, time_at, time_at))await conn.commit()dict_data = https://www.it610.com/article/{'id': id,'url': url,'cdn_url': 'https://cdn.***.net' + '/' + url,'mime': mime,'disk': disk,'created_at': time_at,'updated_at': time_at,}return success(data=https://www.it610.com/article/dict_data)except rsa.pkcs1.VerificationError:return failed(msg='验证错误')async def init(loop):# 创建连接池mysql_pool = await aiomysql.create_pool(host='127.0.0.1', port=3306,user='', password='',db='', loop=loop)async def on_shutdown(application):"""接收到关闭信号时,要先关闭连接池,并等待连接池关闭成功.:param web.Application application::return:"""application['mysql_pool'].close()# 没有下面这句话会报错 RuntimeError: Event loop is closed ,因为连接池没有真正关关闭程序就关闭了,引发python的报错await application['mysql_pool'].wait_closed()application = web.Application()application.on_shutdown.append(on_shutdown)# 把连接池放到 application 实例中application['mysql_pool'] = mysql_poolapplication.add_routes([web.get('/', handle), web.post('/oss', handle)])return applicationif __name__ == '__main__':loop = asyncio.get_event_loop()application = loop.run_until_complete(init(loop))web.run_app(application, host='127.0.0.1')loop.close()

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