(Objective-C) Backblaze S3 List Buckets

See more Backblaze S3 Examples

Demonstrates how to list Backblaze buckets.

The Chilkat S3 functions in the HTTP class are compatible with the Backblaze service. However, because of some specific issues, Chilkat v9.5.0.89 or later is needed.

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#import <CkoHttp.h>
#import <NSString.h>
#import <CkoXml.h>

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoHttp *http = [[CkoHttp alloc] init];
BOOL success;

// keyID = Access Key ID or Access Key
http.AwsAccessKey = @"access-key";

// applicationKey = Secret Access Key or Secret Key
http.AwsSecretKey = @"secret-key";

// Region is the 2nd part of your S3 Endpoint
http.AwsEndpoint = @"s3.us-west-002.backblazeb2.com";

NSString *bucketsXml = [http S3_ListBuckets];

if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoXml *xml = [[CkoXml alloc] init];
[xml LoadXml: bucketsXml];
NSLog(@"%@",[xml GetXml]);

// Use this online tool to generate parsing code from sample XML: 
// Generate Parsing Code from XML

// Sample output:

// <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
// <ListAllMyBucketsResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
//     <Owner>
//         <ID>f2ebbc5f792c</ID>
//         <DisplayName/>
//     </Owner>
//     <Buckets>
//         <Bucket>
//             <Name>chilkat</Name>
//             <CreationDate>2021-10-30T14:17:30.004Z</CreationDate>
//         </Bucket>
//         <Bucket>
//             <Name>chilkat-test</Name>
//             <CreationDate>2021-10-30T14:25:52.556Z</CreationDate>
//         </Bucket>
//     </Buckets>
// </ListAllMyBucketsResult>

NSString *Name = 0;
NSString *CreationDate = 0;

NSString *ListAllMyBucketsResult_xmlns = [xml GetAttrValue: @"xmlns"];
NSString *ID = [xml GetChildContent: @"Owner|ID"];
int i = 0;
int count_i = [[xml NumChildrenHavingTag: @"Buckets|Bucket"] intValue];
while (i < count_i) {
    xml.I = [NSNumber numberWithInt: i];
    Name = [xml GetChildContent: @"Buckets|Bucket[i]|Name"];
    CreationDate = [xml GetChildContent: @"Buckets|Bucket[i]|CreationDate"];
    i = i + 1;
}