通过C++配置Bucket Policy

注意事项

• 在配置Bucket Policy之前，请确保您已了解该功能。详情请参见Bucket Policy。

• 本文以华东1（杭州）外网Endpoint为例。如果您希望通过与OSS同地域的其他阿里云产品访问OSS，请使用内网Endpoint。关于OSS支持的Region与Endpoint的对应关系，请参见OSS地域和访问域名。

• 本文以OSS域名新建OSSClient为例。如果您希望通过自定义域名、STS等方式新建OSSClient，请参见新建OssClient。

• 要设置Bucket Policy，您必须有oss:PutBucketPolicy权限；要获取Bucket Policy，您必须有oss:GetBucketPolicy权限；要删除Bucket Policy，您必须有oss:DeleteBucketPolicy权限。具体操作，请参见为RAM用户授权自定义的权限策略。

设置Bucket Policy

以下代码用于设置Bucket Policy：

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /* 初始化OSS账号信息。*/
            
    /* yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
    std::string Endpoint = "yourEndpoint";
    / *yourRegion填写Bucket所在地域对应的Region。以华东1（杭州）为例，Region填写为cn - hangzhou。 * /
    std::string Region = "yourRegion";
    /* 填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";

    /* 初始化网络等资源。*/
    InitializeSdk();

    ClientConfiguration conf;
    conf.signatureVersion = SignatureVersionType::V4;
    /* 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。*/
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);
    client.SetRegion(Region);

    /* 以下示例用于资源拥有者（即UID为174649585760xxxx的Bucket Owner）通过Bucket Policy授权指定用户（UID为20214760404935xxxx的RAM用户）拥有列举examplebucket下所有文件的权限。*/
    std::string policy = 
        R"(
        {
            "Statement": [
            {
                "Action": [
                    "oss:GetObject",
                    "oss:ListObjects"
                ],
                "Principal": [
                    "20214760404935xxxx"           
                ],
                "Effect" : "Allow",
                "Resource" : ["acs:oss:*:174649585760xxxx:examplebucket/*"]
            }
            ],
                "Version": "1"
        }
        )";
    SetBucketPolicyRequest request(BucketName);
    request.setPolicy(policy);
    auto outcome = client.SetBucketPolicy(request);

    if (!outcome.isSuccess()) {
        /* 异常处理。*/
        std::cout << "Set Bucket Policy fail" <<
            ",code:" << outcome.error().Code() <<
            ",message:" << outcome.error().Message() <<
            ",requestId:" << outcome.error().RequestId() << std::endl;
    }

    /* 释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

获取Bucket Policy

以下代码用于获取Bucket Policy信息：

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /* 初始化OSS账号信息。*/
            
    /* yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
    std::string Endpoint = "yourEndpoint";
    / *yourRegion填写Bucket所在地域对应的Region。以华东1（杭州）为例，Region填写为cn - hangzhou。 * /
    std::string Region = "yourRegion";
    /* 填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";

    /* 初始化网络等资源。*/
    InitializeSdk();

    ClientConfiguration conf;
    conf.signatureVersion = SignatureVersionType::V4;
    /* 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。*/
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);
    client.SetRegion(Region);

    /* 获取Bucket Policy配置信息。*/
    GetBucketPolicyRequest request(BucketName);
    auto outcome = client.GetBucketPolicy(request);

    if (!outcome.isSuccess()) {
        /* 异常处理。*/
        std::cout << "Get Bucket Policy fail" <<
            ",code:" << outcome.error().Code() <<
            ",message:" << outcome.error().Message() <<
            ",requestId:" << outcome.error().RequestId() << std::endl;
            return -1;
    }

    /* 打印配置信息。*/
    std::cout << outcome.result().Policy() << std::endl;

    /* 释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

删除Bucket Policy

以下代码用于删除Bucket Policy：

#include <alibabacloud/oss/OssClient.h>
using namespace AlibabaCloud::OSS;

int main(void)
{
    /* 初始化OSS账号信息。*/
            
    /* yourEndpoint填写Bucket所在地域对应的Endpoint。以华东1（杭州）为例，Endpoint填写为https://oss-cn-hangzhou.aliyuncs.com。*/
    std::string Endpoint = "yourEndpoint";
    / *yourRegion填写Bucket所在地域对应的Region。以华东1（杭州）为例，Region填写为cn - hangzhou。 * /
    std::string Region = "yourRegion";
    /* 填写Bucket名称，例如examplebucket。*/
    std::string BucketName = "examplebucket";

    /* 初始化网络等资源。*/
    InitializeSdk();

    ClientConfiguration conf;
    conf.signatureVersion = SignatureVersionType::V4;
    /* 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。*/
    auto credentialsProvider = std::make_shared<EnvironmentVariableCredentialsProvider>();
    OssClient client(Endpoint, credentialsProvider, conf);
    client.SetRegion(Region);

    /* 删除Bucket Policy。*/
    DeleteBucketPolicyRequest request(BucketName);
    auto outcome = client.DeleteBucketPolicy(request);

    if (!outcome.isSuccess()) {
        /* 异常处理。*/
        std::cout << "Delete Bucket Policy fail" <<
            ",code:" << outcome.error().Code() <<
            ",message:" << outcome.error().Message() <<
            ",requestId:" << outcome.error().RequestId() << std::endl;
    }

    /* 释放网络等资源。*/
    ShutdownSdk();
    return 0;
}

相关文档

• 关于设置Bucket Policy的API接口说明，请参见PutBucketPolicy。

• 关于获取Bucket Policy的API接口说明，请参见GetBucketPolicy。

• 关于删除Bucket Policy的API接口说明，请参见DeleteBucketPolicy。