Unicode C

Create S3 Pre-Signed URL for Upload

See more Amazon S3 Examples

Demonstrates how to generate a pre-signed URL for S3 uploads. Unicode C

#include <C_CkHttpW.h>
#include <C_CkHttpResponseW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttpW http;
    const wchar_t *bucketName;
    const wchar_t *objectName;
    const wchar_t *awsService;
    const wchar_t *httpVerb;
    int numSecondsValid;
    BOOL bUseHttps;
    const wchar_t *preSignedUrl;
    HCkHttpResponseW resp;

    success = FALSE;

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

    http = CkHttpW_Create();

    CkHttpW_putAwsAccessKey(http,L"AWS_ACCESS_KEY");
    CkHttpW_putAwsSecretKey(http,L"AWS_SECRET_KEY");

    // Make sure to set your AWS region correctly
    CkHttpW_putAwsRegion(http,L"us-east-1");

    bucketName = L"chilkat200";
    objectName = L"starfish/starfish.jpg";
    awsService = L"s3";
    httpVerb = L"PUT";

    // The signed URL will be valid for this number of seconds:
    numSecondsValid = 86400;

    // Choose between a URL beginning with "http://" or "https://"...
    bUseHttps = TRUE;

    // Generate the pre-signed URL
    preSignedUrl = CkHttpW_s3_GenPresignedUrl(http,httpVerb,bUseHttps,bucketName,objectName,numSecondsValid,awsService);
    if (CkHttpW_getLastMethodSuccess(http) == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        return;
    }

    wprintf(L"Presigned URL for Upload: %s\n",preSignedUrl);

    // Here's an example of a pre-signed URL
    // 
    // http://chilkat200.s3.amazonaws.com/starfish/starfish.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIBJLOVZVXAU2AFUA%2F20200623%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200623T234049Z&X-Amz-Expires=86400&X-Amz-SignedHeaders=host&X-Amz-Signature=xxxxxeaea071178d772856c0a4e4c0114a8d9992f0d0812955e490d0exxxxxxx
    // 

    // You can use the pre-signed URL to upload from Chilkat
    // For example, upload by streaming from a local file
    resp = CkHttpResponseW_Create();
    success = CkHttpW_HttpFile(http,L"PUT",preSignedUrl,L"qa_data/jpg/starfish.jpg",L"image/jpg",resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    wprintf(L"response status code = %d\n",CkHttpResponseW_getStatusCode(resp));
    wprintf(L"response body size: %u\n",CkHttpResponseW_getContentLength(resp));
    if (CkHttpResponseW_getContentLength(resp) > 0) {
        wprintf(L"response body:\n");
        wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp));
    }



    CkHttpW_Dispose(http);
    CkHttpResponseW_Dispose(resp);

    }