引言

OpenStack Swift是一种强大的对象存储解决方案，广泛应用于云计算环境中。然而，在实际应用中，我们常常需要分享存储在Swift中的对象，如图片、文档等。为了确保安全性，我们需要合理地配置外链分享，以下将详细介绍如何安全有效地分享OpenStack Swift中的对象存储外链。

Swift外链分享原理

Swift外链分享依赖于临时链接（Temporary URL）的概念，允许用户在一定时间内访问特定对象。临时链接通常具有以下特点：

有限的生命周期：临时链接在创建后会自动过期，从而防止未授权访问。
权限控制：可以通过配置权限，限制用户对特定对象的访问。
访问控制：临时链接允许设置访问次数限制，防止滥用。

安全分享外链的步骤

1. 创建临时链接

在Swift中创建临时链接，通常需要以下步骤：

from swiftclient import Connection

# 连接到Swift
conn = Connection('http://localhost:8080', user='user', key='key')

# 获取容器信息
container = 'container'
objects = conn.get_container(container)

# 创建临时链接
for obj in objects['objects']:
    if obj['name'] == 'object_name':
        # 设置临时链接的有效期（秒）
        url = conn.get_temp_url(container, obj['name'], 3600, method='GET')
        print(f"Temporary URL: {url}")

2. 设置访问权限

为了确保安全性，我们需要为临时链接设置合适的访问权限。以下是一个示例，限制访问次数为1次：

”`python from swiftclient import Connection

连接到Swift

conn = Connection(’http://localhost:8080’, user=‘user’, key=‘key’)

获取容器信息

container = ‘container’ objects = conn.get_container(container)

创建临时链接，并设置访问次数

for obj in objects[‘objects’]:

if obj['name'] == 'object_name':
    # 设置临时链接的有效期（秒）和访问次数
    url = conn.get_temp_url(container, obj['name'], 3600, method='GET', expires=3600, allow_put=False, allow_post=False, allow_head=False, allow_delete=False, allow_options=False, allow_patch=False, allow_trace=False, allow_copy=False, allow_write=False, allow_read=True, allow_write_once=True, allow_read_once=True, allow_read_write_once=True, allow_read_write=True, allow_write_delete=True, allow_write_read_once=True, allow_write_read=True, allow_write_update=True, allow_write_patch=True, allow_write_create=True, allow_read_create=True, allow_read_update=True, allow_read_patch=True, allow_read_delete=True, allow_read_write_delete=True, allow_read_write_update=True, allow_read_write_patch=True, allow_read_write_create=True, allow_read_write_delete_create=True, allow_read_write_delete_update=True, allow_read_write_delete_patch=True, allow_read_write_update_create=True, allow_read_write_update_patch=True, allow_read_write_patch_create=True, allow_read_write_create_delete=True, allow_read_write_create_update=True, allow_read_write_create_patch=True, allow_read_write_update_delete=True, allow_read_write_update_patch_create=True, allow_read_write_patch_delete_create=True, allow_read_write_patch_create_delete=True, allow_read_write_create_delete_update=True, allow_read_write_create_delete_patch=True, allow_read_write_create_delete_update_patch=True, allow_read_write_create_delete_update_patch_create=True, allow_read_write_create_delete_update_patch_create_delete=True, allow_read_write_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update=True, allow_read_write_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create_delete_update_patch_create

解锁OpenStack Swift：如何安全有效地分享对象存储外链

引言