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Managing Bucket Policies

Besides bucket ACLs, bucket owners can use bucket policies to centrally control access to buckets and objects in buckets.

For more information, see Bucket Policy.

Setting a Bucket Policy

You can call setBucketPolicy to set a bucket policy. Sample code is as follows:

static OBSClient *client;
NSString *endPoint = @"your-endpoint";
NSString *SK = @"*** Provide your Secret Key ***";
NSString *AK = @"*** Provide your Access Key ***";
    
// Initialize identity authentication.
OBSStaticCredentialProvider *credentialProvider = [[OBSStaticCredentialProvider alloc] initWithAccessKey:AK secretKey:SK];
    
//Initialize service configuration.
OBSServiceConfiguration *conf = [[OBSServiceConfiguration alloc] initWithURLString:endPoint credentialProvider:credentialProvider];
    
// Initialize an instance of OBSClient.
client = [[OBSClient alloc] initWithConfiguration:conf];
    
// Set a bucket policy.
OBSSetBucketPolicyWithStringRequest *request = [[OBSGetBucketPolicyRequest alloc] initWithBucketName:@"bucketname" policyString:@"policystring"];
[client setBucketPolicy:request completionHandler:^(OBSSetBucketPolicyResponse *response, NSError *error){
    NSLog(@"%@",response);  
 }];

For details about the format (JSON character string) of bucket policies, see the Object Storage Service API Reference.

Obtaining a Bucket Policy

You can call getBucketPolicy to obtain a bucket policy. Sample code is as follows:

static OBSClient *client;
NSString *endPoint = @"your-endpoint";
NSString *SK = @"*** Provide your Secret Key ***";
NSString *AK = @"*** Provide your Access Key ***";
    
// Initialize identity authentication.
OBSStaticCredentialProvider *credentialProvider = [[OBSStaticCredentialProvider alloc] initWithAccessKey:AK secretKey:SK];
    
//Initialize service configuration.
OBSServiceConfiguration *conf = [[OBSServiceConfiguration alloc] initWithURLString:endPoint credentialProvider:credentialProvider];
    
// Initialize an instance of OBSClient.
client = [[OBSClient alloc] initWithConfiguration:conf];
    
// Obtain the bucket ACL.
OBSGetBucketPolicyRequest *request = [[OBSGetBucketPolicyRequest alloc] initWithBucketName:g_bucketName];
[client getBucketPolicy:request completionHandler:^(OBSGetBucketPolicyResponse *response, NSError *error){
    NSLog(@"%@",response);  
 }];

Deleting a Bucket Policy

You can call deleteBucketPolicy to delete a bucket policy. Sample code is as follows:

static OBSClient *client;
NSString *endPoint = @"your-endpoint";
NSString *SK = @"*** Provide your Secret Key ***";
NSString *AK = @"*** Provide your Access Key ***";
    
// Initialize identity authentication.
OBSStaticCredentialProvider *credentialProvider = [[OBSStaticCredentialProvider alloc] initWithAccessKey:AK secretKey:SK];
    
//Initialize service configuration.
OBSServiceConfiguration *conf = [[OBSServiceConfiguration alloc] initWithURLString:endPoint credentialProvider:credentialProvider];
    
// Initialize an instance of OBSClient.
client = [[OBSClient alloc] initWithConfiguration:conf];
    
// Delete a bucket policy.
OBSDeleteBucketPolicyRequest *request = [[OBSDeleteBucketPolicyRequest alloc] initWithBucketName:g_bucketName];
[client deleteBucketPolicy:request completionHandler:^(OBSDeleteBucketPolicyResponse *response, NSError *error) {
     NSLog(@"%@",response);
}];
Parent topic: Bucket Management