(MFC) S3 List Bucket Objects (Bucket-in-Path)

Demonstrates how to fetch a list of objects in an S3 bucket, but using the bucket-in-path request format instead of putting the bucket name in the HOST header.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkRest.h>
#include <CkAuthAws.h>
#include <CkStringBuilder.h>
#include <CkXml.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkRest rest;

    // Connect to the Amazon AWS REST server.
    bool bTls = true;
    int port = 443;
    bool bAutoReconnect = true;
    bool success = rest.Connect("s3.amazonaws.com",port,bTls,bAutoReconnect);

    // ----------------------------------------------------------------------------
    // Important: For buckets created in regions outside us-east-1,
    // there are three important changes that need to be made.
    // See Working with S3 Buckets in Non-us-east-1 Regions for the details.
    // ----------------------------------------------------------------------------

    // Provide AWS credentials for the REST call.
    CkAuthAws authAws;
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("s3");
    success = rest.SetAuthAws(authAws);

    // The bucket name is "chilkat100"
    CkStringBuilder sbResponse;
    success = rest.FullRequestNoBodySb("GET","/chilkat100",sbResponse);
    if (success != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    int statusCode = rest.get_ResponseStatusCode();
    strOut.append("Response status code = ");
    strOut.appendInt(statusCode);
    strOut.append("\r\n");

    CkXml xml;
    xml.LoadSb(sbResponse,true);
    strOut.append(xml.getXml());
    strOut.append("\r\n");

    if (statusCode != 200) {
        strOut.append("Failed.  See error information in the XML.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

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

    const char *Key = 0;
    const char *LastModified = 0;
    const char *ETag = 0;
    int Size;
    const char *ID = 0;
    const char *DisplayName = 0;
    const char *StorageClass = 0;

    const char *Name = xml.getChildContent("Name");
    int MaxKeys = xml.GetChildIntValue("MaxKeys");
    const char *IsTruncated = xml.getChildContent("IsTruncated");
    int i = 0;
    int count_i = xml.NumChildrenHavingTag("Contents");
    while (i < count_i) {
        xml.put_I(i);
        Key = xml.getChildContent("Contents[i]|Key");
        LastModified = xml.getChildContent("Contents[i]|LastModified");
        ETag = xml.getChildContent("Contents[i]|ETag");
        Size = xml.GetChildIntValue("Contents[i]|Size");
        ID = xml.getChildContent("Contents[i]|Owner|ID");
        DisplayName = xml.getChildContent("Contents[i]|Owner|DisplayName");
        StorageClass = xml.getChildContent("Contents[i]|StorageClass");
        i = i + 1;
    }

    strOut.append("Success.");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }