(Unicode C) hotelbeds.com REST API Authentication

Demonstrates how to calculate the X-Signature header and add to requests sent to api.test.hotelbeds.com.

For more information, see https://developer.hotelbeds.com/documentation/getting-started/

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#include <C_CkDateTimeW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkCrypt2W.h>
#include <C_CkHttpW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkDateTimeW dt;
    BOOL bLocalTime;
    const wchar_t *unixTimeStr;
    const wchar_t *apiKey;
    const wchar_t *secret;
    HCkStringBuilderW sb;
    HCkCrypt2W crypt;
    const wchar_t *signature;
    HCkHttpW http;
    const wchar_t *jsonResponse;

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

    // This example duplicates the following CURL statement provided in the hotelbeds.com "Getting Started"
    // developer documentation:

    // #!/bin/bash 
    // apiKey="yourApiKey"
    // secret="yourSecret"
    // curl -i \
    //   -X GET \
    //   -H 'Accept:application/json' \
    //   -H 'Api-key:'$apiKey'' \
    //   -H 'X-Signature:'$(echo -n ${apiKey}${secret}$(date +%s)|sha256sum|awk '{ print $1}')'' \
    //   https://api.test.hotelbeds.com/hotel-api/1.0/status

    // The "date + %s" command emits a UNIX date/time number such as 1605548842
    // We need to concatenate the apiKey, secret, and current date/time in UNIX (numeric) time format.
    dt = CkDateTimeW_Create();
    CkDateTimeW_SetFromCurrentSystemTime(dt);
    // Get the UNIX time string in the GMT timezone.
    bLocalTime = FALSE;
    unixTimeStr = CkDateTimeW_getAsUnixTimeStr(dt,bLocalTime);
    wprintf(L"%s\n",unixTimeStr);

    // Use your own API key and secret.  (These are not valid values)
    apiKey = L"227b20a2cb705e45f3b0a0944672dc07";
    secret = L"54dc7ba9e2";

    sb = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sb,apiKey);
    CkStringBuilderW_Append(sb,secret);
    CkStringBuilderW_Append(sb,unixTimeStr);

    crypt = CkCrypt2W_Create();
    CkCrypt2W_putHashAlgorithm(crypt,L"sha256");
    CkCrypt2W_putEncodingMode(crypt,L"hexlower");
    signature = CkCrypt2W_hashStringENC(crypt,CkStringBuilderW_getAsString(sb));

    wprintf(L"%s\n",signature);

    http = CkHttpW_Create();

    CkHttpW_SetRequestHeader(http,L"Accept",L"application/json");
    CkHttpW_SetRequestHeader(http,L"Api-key",apiKey);
    CkHttpW_SetRequestHeader(http,L"X-Signature",signature);

    jsonResponse = CkHttpW_quickGetStr(http,L"https://api.test.hotelbeds.com/hotel-api/1.0/status");
    wprintf(L"%s\n",jsonResponse);
    wprintf(L"%d\n",CkHttpW_getLastStatus(http));

    // Sample output:  

    // 1605549542
    // 2146aefb36e7331b3b29aafd7638398ca22e689573224f1a71274d60bd201ec2
    // {"auditData":{"timestamp":"2020-11-16 18:59:02.430"},"status":"OK"}
    // 200


    CkDateTimeW_Dispose(dt);
    CkStringBuilderW_Dispose(sb);
    CkCrypt2W_Dispose(crypt);
    CkHttpW_Dispose(http);

    }