(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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// 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.

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("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
json.UpdateString("client_secret","APP_PASSWORD");

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

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

Chilkat.Http http = new Chilkat.Http();

// 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.
http.AuthToken = json.Emit();

// Replace key_vault_name with the name of your Azure Key Vault.
Chilkat.StringBuilder sbResponse = new Chilkat.StringBuilder();
bool success = http.QuickGetSb("https://key_vault_name.vault.azure.net/certificates?api-version=7.4",sbResponse);
if (success == false) {

    int statusCode = http.LastStatus;
    if (statusCode == 0) {
        // We did not get a response from the server..
        Debug.WriteLine(http.LastErrorText);
    }
    else {
        // We received a response, but it was an error.
        Debug.WriteLine("Error response status code: " + Convert.ToString(statusCode));
        Debug.WriteLine("Error response:");
        Debug.WriteLine(sbResponse.GetAsString());
    }

    return;
}

Chilkat.JsonObject jsonResp = new Chilkat.JsonObject();
jsonResp.LoadSb(sbResponse);
jsonResp.EmitCompact = false;

Debug.WriteLine(jsonResp.Emit());

// 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

string id;
string x5t;
bool Enabled;
int Nbf;
int Exp;
int Created;
int Updated;
string subject;

int i = 0;
int count_i = jsonResp.SizeOfArray("value");
while (i < count_i) {
    jsonResp.I = i;
    id = jsonResp.StringOf("value[i].id");
    x5t = jsonResp.StringOf("value[i].x5t");
    Enabled = jsonResp.BoolOf("value[i].attributes.enabled");
    Nbf = jsonResp.IntOf("value[i].attributes.nbf");
    Exp = jsonResp.IntOf("value[i].attributes.exp");
    Created = jsonResp.IntOf("value[i].attributes.created");
    Updated = jsonResp.IntOf("value[i].attributes.updated");
    subject = jsonResp.StringOf("value[i].subject");
    i = i + 1;
}