(C) Azure Key Vault Get Certificates

See more Azure Key Vault Examples

Demonstrates how to list the certificates in an Azure Key Vault.

Note: This example requires Chilkat v9.5.0.96 or later.

For more information, see https://learn.microsoft.com/en-us/rest/api/keyvault/certificates/get-certificates/get-certificates?tabs=HTTP

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#include <C_CkJsonObject.h>
#include <C_CkHttp.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    HCkJsonObject json;
    HCkHttp http;
    HCkStringBuilder sbResponse;
    BOOL success;
    int statusCode;
    HCkJsonObject jsonResp;
    const char *id;
    const char *x5t;
    BOOL Enabled;
    int Nbf;
    int Exp;
    int Created;
    int Updated;
    const char *subject;
    int i;
    int count_i;

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

    // We demonstrated how to get an access token for your Azure Key Vault
    // in this example: Azure Key Vault Get OAuth2 Access Token using Client Credentials

    // However.. starting in Chilkat v9.5.0.96, instead of directly providing Chilkat with the OAuth2 access token,
    // you can instead provide the means for Chilkat to automatically get the OAuth2 access token,
    // and in addition, Chilkat will automatically re-fetch a new OAuth2 access token as needed, such as shortly 
    // prior to or after expiration.

    // You do this by setting the AuthToken property to a JSON string that contains the required information.

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"client_id","APP_ID");

    // The APP_PASSWORD is the "password" returned by the Azure CLI command: az ad sp create-for-rbac --name http://example.com --role Contributor
    // See Azure Key Vault Get OAuth2 Access Token using Client Credentials
    CkJsonObject_UpdateString(json,"client_secret","APP_PASSWORD");

    // The access token will be for Azure Key Vault operations.
    CkJsonObject_UpdateString(json,"resource","https://vault.azure.net");

    // Specify the token endpoint which includes your tenant ID.
    CkJsonObject_UpdateString(json,"token_endpoint","https://login.microsoftonline.com/TENANT_ID/oauth2/token");

    http = CkHttp_Create();

    // Instead of providing an actual access token, we give Chilkat the information that allows it to 
    // automatically fetch the access token using the OAuth2 client credentials flow.
    CkHttp_putAuthToken(http,CkJsonObject_emit(json));

    // Replace key_vault_name with the name of your Azure Key Vault.
    sbResponse = CkStringBuilder_Create();
    success = CkHttp_QuickGetSb(http,"https://key_vault_name.vault.azure.net/certificates?api-version=7.4",sbResponse);
    if (success == FALSE) {

        statusCode = CkHttp_getLastStatus(http);
        if (statusCode == 0) {
            // We did not get a response from the server..
            printf("%s\n",CkHttp_lastErrorText(http));
        }
        else {
            // We received a response, but it was an error.
            printf("Error response status code: %d\n",statusCode);
            printf("Error response:\n");
            printf("%s\n",CkStringBuilder_getAsString(sbResponse));
        }

        CkJsonObject_Dispose(json);
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponse);
        return;
    }

    jsonResp = CkJsonObject_Create();
    CkJsonObject_LoadSb(jsonResp,sbResponse);
    CkJsonObject_putEmitCompact(jsonResp,FALSE);

    printf("%s\n",CkJsonObject_emit(jsonResp));

    // The output looks like this:

    // {
    //   "value": [
    //     {
    //       "id": "https://kvchilkat.vault.azure.net/certificates/BadSSL",
    //       "x5t": "U04xLnb8Ww7BKkW9dD7P1cCHNDY",
    //       "attributes": {
    //         "enabled": true,
    //         "nbf": 1674409014,
    //         "exp": 1737481014,
    //         "created": 1697294224,
    //         "updated": 1697294224
    //       },
    //       "subject": ""
    //     },
    //     {
    //       "id": "https://kvchilkat.vault.azure.net/certificates/Brasil",
    //       "x5t": "ayF5eBtlA35xPMivusE0wpmFjnA",
    //       "attributes": {
    //         "enabled": true,
    //         "nbf": 1667830002,
    //         "exp": 1699366002,
    //         "created": 1697294090,
    //         "updated": 1697294090
    //       },
    //       "subject": ""
    //     }
    //   ],
    //   "nextLink": null
    // }

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

    i = 0;
    count_i = CkJsonObject_SizeOfArray(jsonResp,"value");
    while (i < count_i) {
        CkJsonObject_putI(jsonResp,i);
        id = CkJsonObject_stringOf(jsonResp,"value[i].id");
        x5t = CkJsonObject_stringOf(jsonResp,"value[i].x5t");
        Enabled = CkJsonObject_BoolOf(jsonResp,"value[i].attributes.enabled");
        Nbf = CkJsonObject_IntOf(jsonResp,"value[i].attributes.nbf");
        Exp = CkJsonObject_IntOf(jsonResp,"value[i].attributes.exp");
        Created = CkJsonObject_IntOf(jsonResp,"value[i].attributes.created");
        Updated = CkJsonObject_IntOf(jsonResp,"value[i].attributes.updated");
        subject = CkJsonObject_stringOf(jsonResp,"value[i].subject");
        i = i + 1;
    }



    CkJsonObject_Dispose(json);
    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbResponse);
    CkJsonObject_Dispose(jsonResp);

    }