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Azure Key Vault Get the Latest Version of a Certificate

See more Azure Key Vault Examples

Demonstrates how to get the latest version of a certificate in Azure Key Vault.

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

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

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

    // See Azure Key Vault Get Certificates for a more detailed explanation
    // for how Chilkat is automatically getting the OAuth2 access token for your application.

    // Provide information needed for Chilkat to automatically get an OAuth2 access token as needed.
    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.updateString("client_id", "APP_ID") catch {};
    json.updateString("client_secret", "APP_PASSWORD") catch {};
    json.updateString("resource", "https://vault.azure.net") catch {};
    json.updateString("token_endpoint", "https://login.microsoftonline.com/TENANT_ID/oauth2/token") catch {};

    const http = try chilkat.Http.init();
    defer http.deinit();

    // 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.setAuthToken(try json.emit(alloc));

    // Replace VAULT_NAME with the name of your Azure Key Vault.
    http.setUrlVar("certName", "importCert01") catch {};

    const sb_response = try chilkat.StringBuilder.init();
    defer sb_response.deinit();
    http.quickGetSb("https://VAULT_NAME.vault.azure.net/certificates/{$certName}?api-version=7.4", sb_response) catch {
        const status_code = http.getLastStatus();
        if (status_code == 0) {
            // We did not get a response from the server..
            std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
        } else {
            // We received a response, but it was an error.
            std.debug.print("Error response status code: {d}\n", .{status_code});
            std.debug.print("Error response:\n", .{});
            std.debug.print("{s}\n", .{try sb_response.getAsString(alloc)});
        }

        return;
    };

    const json_resp = try chilkat.JsonObject.init();
    defer json_resp.deinit();
    json_resp.loadSb(sb_response) catch {};
    json_resp.setEmitCompact(false);

    std.debug.print("{s}\n", .{try json_resp.emit(alloc)});

    // A sample JSON response is show at the bottom.

    // Let's do two things with the result.
    // 1) Load the DER of the cert into a Chilkat Cert object.
    // 2) Get the Key Vault version id of the certificate.

    const cert = try chilkat.Cert.init();
    defer cert.deinit();
    cert.loadFromBase64(try json_resp.stringOf(alloc, "cer")) catch {
        std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
        std.debug.print("Failed to load certificate from Base64 DER.\n", .{});
        return;
    };

    // The Azure Key Vault's "version" of the certificate is the hex string at the end of the "id", "kid", and "sid" JSON members.
    // For example:  "7140c8755ed14839b5d86a9f7e7f0497"
    const sb_id = try chilkat.StringBuilder.init();
    defer sb_id.deinit();
    sb_id.append(try json_resp.stringOf(alloc, "id")) catch {};
    const cert_version = try sb_id.getAfterFinal(alloc, "/", false);
    std.debug.print("The key vault cert version is {s}\n", .{cert_version});

    // {
    //   "id": "https://kvchilkat.vault.azure.net/certificates/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
    //   "kid": "https://kvchilkat.vault.azure.net/keys/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
    //   "sid": "https://kvchilkat.vault.azure.net/secrets/importCert01/7140c8755ed14839b5d86a9f7e7f0497",
    //   "x5t": "I_e3776K5Q_6PN1HHvJoI2ZGQRQ",
    //   "cer": "MIIGXjCCB .... cjTsi7yIY=",
    //   "attributes": {
    //     "enabled": true,
    //     "nbf": 1633996800,
    //     "exp": 1728691199,
    //     "created": 1697411128,
    //     "updated": 1697411128,
    //     "recoveryLevel": "CustomizedRecoverable+Purgeable",
    //     "recoverableDays": 7
    //   },
    //   "policy": {
    //     "id": "https://kvchilkat.vault.azure.net/certificates/importCert01/policy",
    //     "key_props": {
    //       "exportable": true,
    //       "kty": "RSA",
    //       "key_size": 4096,
    //       "reuse_key": false
    //     },
    //     "secret_props": {
    //       "contentType": "application/x-pkcs12"
    //     },
    //     "x509_props": {
    //       "subject": "CN=\"Chilkat Software, Inc.\", O=\"Chilkat Software, Inc.\", S=Illinois, C=US",
    //       "ekus": [
    //         "1.3.6.1.5.5.7.3.3"
    //       ],
    //       "key_usage": [
    //         "digitalSignature"
    //       ],
    //       "validity_months": 37,
    //       "basic_constraints": {
    //         "ca": false
    //       }
    //     },
    //     "lifetime_actions": [
    //       {
    //         "trigger": {
    //           "lifetime_percentage": 80
    //         },
    //         "action": {
    //           "action_type": "EmailContacts"
    //         }
    //       }
    //     ],
    //     "issuer": {
    //       "name": "Unknown"
    //     },
    //     "attributes": {
    //       "enabled": true,
    //       "created": 1697411128,
    //       "updated": 1697411128
    //     }
    //   }
    // }
}