(C) Payeezy Place Temp Authorization Hold on Buyer’s Credit Card

Demonstrates how to place a temporary authorization hold for the desired amount on the buyer’s credit card. You can Capture the authorized amount on completion of service or Void/Refund the transaction as required.

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <C_CkCrypt2.h>
#include <C_CkPrng.h>
#include <C_CkDateTime.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>
#include <C_CkHttp.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    HCkCrypt2 crypt;
    HCkPrng prng;
    BOOL success;
    const char *apiKey;
    const char *apiSecret;
    const char *token;
    const char *nonce;
    HCkDateTime dtNow;
    HCkStringBuilder sbTimestamp;
    const char *timestamp;
    HCkJsonObject json;
    HCkStringBuilder sbHmacData;
    const char *hexHash;
    HCkStringBuilder sbBase64Hash;
    HCkHttp http;
    const char *url;
    HCkHttpResponse resp;

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

    crypt = CkCrypt2_Create();
    prng = CkPrng_Create();

    // An API key such as y6pWAJNyJyjGv66IsVuWnklkKUPFbb0a
    apiKey = "my_api_key";
    // An API secret such as 86fbae7030253af3cd15faef2a1f4b67353e41fb6799f576b5093ae52901e6f7
    apiSecret = "my_api_secret";
    // A token such as fdoa-a480ce8951daa73262734cf102641994c1e55e7cdf4c02b6
    token = "my_merchant_token";

    // The nonce is a random number (bytes), something like "6057786719490086000"
    nonce = CkPrng_genRandom(prng,8,"decimal");
    printf("nonce = %s\n",nonce);

    dtNow = CkDateTime_Create();
    CkDateTime_SetFromCurrentSystemTime(dtNow);
    sbTimestamp = CkStringBuilder_Create();
    // Get the epoch timestamp in seconds
    CkStringBuilder_Append(sbTimestamp,CkDateTime_getAsUnixTimeStr(dtNow,FALSE));
    // Change it to milliseconds
    CkStringBuilder_Append(sbTimestamp,"000");
    // The timestamp is a number similar to this: 1546011905000 (which is a timestamp taken on 28-Dec-2018).
    timestamp = CkStringBuilder_getAsString(sbTimestamp);
    printf("timestamp = %s\n",timestamp);

    // Generate the following JSON request body:
    // {
    //   "merchant_ref": "Astonishing-Sale",
    //   "transaction_type": "authorize",
    //   "method": "credit_card",
    //   "amount": "1299",
    //   "currency_code": "USD",
    //   "credit_card": {
    //     "type": "visa",
    //     "cardholder_name": "John Smith",
    //     "card_number": "4788250000028291",
    //     "exp_date": "1020",
    //     "cvv": "123"
    //   }
    // }

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"merchant_ref","Astonishing-Sale");
    CkJsonObject_UpdateString(json,"transaction_type","authorize");
    CkJsonObject_UpdateString(json,"method","credit_card");
    CkJsonObject_UpdateString(json,"amount","1299");
    CkJsonObject_UpdateString(json,"currency_code","USD");
    CkJsonObject_UpdateString(json,"credit_card.type","visa");
    CkJsonObject_UpdateString(json,"credit_card.cardholder_name","John Smith");
    CkJsonObject_UpdateString(json,"credit_card.card_number","4788250000028291");
    CkJsonObject_UpdateString(json,"credit_card.exp_date","1020");
    CkJsonObject_UpdateString(json,"credit_card.cvv","123");
    CkJsonObject_putEmitCompact(json,FALSE);
    printf("%s\n",CkJsonObject_emit(json));

    // string hashData = apiKey + nonce + timestamp + token + jsonString;
    sbHmacData = CkStringBuilder_Create();
    CkStringBuilder_Append(sbHmacData,apiKey);
    CkStringBuilder_Append(sbHmacData,nonce);
    CkStringBuilder_Append(sbHmacData,timestamp);
    CkStringBuilder_Append(sbHmacData,token);
    CkStringBuilder_Append(sbHmacData,CkJsonObject_emit(json));

    // HMAC the data to produce a hex string.
    CkCrypt2_putEncodingMode(crypt,"hexlower");
    CkCrypt2_putMacAlgorithm(crypt,"hmac");
    CkCrypt2_SetMacKeyString(crypt,apiSecret);
    CkCrypt2_putHashAlgorithm(crypt,"sha256");
    CkCrypt2_putCharset(crypt,"utf-8");
    hexHash = CkCrypt2_macStringENC(crypt,CkStringBuilder_getAsString(sbHmacData));
    printf("hexHash = %s\n",hexHash);

    // Now base64 encode the hex string:
    sbBase64Hash = CkStringBuilder_Create();
    CkStringBuilder_Append(sbBase64Hash,hexHash);
    CkStringBuilder_Encode(sbBase64Hash,"base64","utf-8");

    printf("This is the Authorization header to be sent with the payeezy request:\n");
    printf("Authorization: %s\n",CkStringBuilder_getAsString(sbBase64Hash));

    // -----------------------------------------------------------
    // Now that we have the value for the Authorization header, send the POST containing the JSON.

    http = CkHttp_Create();

    CkHttp_putAccept(http,"*/*");
    CkHttp_putUserAgent(http,"");
    CkHttp_SetRequestHeader(http,"Authorization",CkStringBuilder_getAsString(sbBase64Hash));
    CkHttp_SetRequestHeader(http,"apikey",apiKey);
    CkHttp_SetRequestHeader(http,"nonce",nonce);
    CkHttp_SetRequestHeader(http,"timestamp",timestamp);
    CkHttp_SetRequestHeader(http,"token",token);

    CkHttp_putSessionLogFilename(http,"qa_output/payeezy.txt");

    url = "https://api-cert.payeezy.com/v1/transactions";
    resp = CkHttp_PostJson2(http,url,"application/json",CkJsonObject_emit(json));
    if (CkHttp_getLastMethodSuccess(http) != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkCrypt2_Dispose(crypt);
        CkPrng_Dispose(prng);
        CkDateTime_Dispose(dtNow);
        CkStringBuilder_Dispose(sbTimestamp);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbHmacData);
        CkStringBuilder_Dispose(sbBase64Hash);
        CkHttp_Dispose(http);
        return;
    }

    printf("response status code = %d\n",CkHttpResponse_getStatusCode(resp));
    CkJsonObject_Load(json,CkHttpResponse_bodyStr(resp));
    printf("%s\n",CkJsonObject_emit(json));
    CkHttpResponse_Dispose(resp);

    // Sample JSON response:

    // {
    //   "correlation_id": "228.4604632998994",
    //   "transaction_status": "approved",
    //   "validation_status": "success",
    //   "transaction_type": "authorize",
    //   "transaction_id": "ET175628",
    //   "transaction_tag": "2313721985",
    //   "method": "credit_card",
    //   "amount": "1299",
    //   "currency": "USD",
    //   "cvv2": "M",
    //   "token": {
    //     "token_type": "FDToken",
    //     "token_data": {
    //       "value": "9732261336638291"
    //     }
    //   },
    //   "card": {
    //     "type": "visa",
    //     "cardholder_name": "John Smith",
    //     "card_number": "8291",
    //     "exp_date": "1020"
    //   },
    //   "bank_resp_code": "100",
    //   "bank_message": "Approved",
    //   "gateway_resp_code": "00",
    //   "gateway_message": "Transaction Normal"
    // }
    // 

    printf("%s\n",CkJsonObject_stringOf(json,"correlation_id"));
    printf("%s\n",CkJsonObject_stringOf(json,"transaction_status"));
    printf("%s\n",CkJsonObject_stringOf(json,"validation_status"));
    printf("%s\n",CkJsonObject_stringOf(json,"transaction_type"));
    printf("%s\n",CkJsonObject_stringOf(json,"transaction_id"));
    printf("%s\n",CkJsonObject_stringOf(json,"transaction_tag"));
    printf("%s\n",CkJsonObject_stringOf(json,"method"));
    printf("%s\n",CkJsonObject_stringOf(json,"amount"));
    printf("%s\n",CkJsonObject_stringOf(json,"currency"));
    printf("%s\n",CkJsonObject_stringOf(json,"cvv2"));
    printf("%s\n",CkJsonObject_stringOf(json,"token.token_type"));
    printf("%s\n",CkJsonObject_stringOf(json,"token.token_data.value"));
    printf("%s\n",CkJsonObject_stringOf(json,"card.type"));
    printf("%s\n",CkJsonObject_stringOf(json,"card.cardholder_name"));
    printf("%s\n",CkJsonObject_stringOf(json,"card.card_number"));
    printf("%s\n",CkJsonObject_stringOf(json,"card.exp_date"));
    printf("%s\n",CkJsonObject_stringOf(json,"bank_resp_code"));
    printf("%s\n",CkJsonObject_stringOf(json,"bank_message"));
    printf("%s\n",CkJsonObject_stringOf(json,"gateway_resp_code"));
    printf("%s\n",CkJsonObject_stringOf(json,"gateway_message"));


    CkCrypt2_Dispose(crypt);
    CkPrng_Dispose(prng);
    CkDateTime_Dispose(dtNow);
    CkStringBuilder_Dispose(sbTimestamp);
    CkJsonObject_Dispose(json);
    CkStringBuilder_Dispose(sbHmacData);
    CkStringBuilder_Dispose(sbBase64Hash);
    CkHttp_Dispose(http);

    }