(PureBasic) 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.

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

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkCert.pb"
IncludeFile "CkHttp.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

    ; 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.

    success.i

    ; Provide information needed for Chilkat to automatically get an OAuth2 access token as needed.
    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckUpdateString(json,"client_id","APP_ID")
    CkJsonObject::ckUpdateString(json,"client_secret","APP_PASSWORD")
    CkJsonObject::ckUpdateString(json,"resource","https://vault.azure.net")
    CkJsonObject::ckUpdateString(json,"token_endpoint","https://login.microsoftonline.com/TENANT_ID/oauth2/token")

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; 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::setCkAuthToken(http, CkJsonObject::ckEmit(json))

    ; Replace VAULT_NAME with the name of your Azure Key Vault.
    CkHttp::ckSetUrlVar(http,"certName","importCert01")

    sbResponse.i = CkStringBuilder::ckCreate()
    If sbResponse.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkHttp::ckQuickGetSb(http,"https://VAULT_NAME.vault.azure.net/certificates/{$certName}?api-version=7.4",sbResponse)
    If success = 0

        statusCode.i = CkHttp::ckLastStatus(http)
        If statusCode = 0
            ; We did not get a response from the server..
            Debug CkHttp::ckLastErrorText(http)
        Else
            ; We received a response, but it was an error.
            Debug "Error response status code: " + Str(statusCode)
            Debug "Error response:"
            Debug CkStringBuilder::ckGetAsString(sbResponse)
        EndIf

        CkJsonObject::ckDispose(json)
        CkHttp::ckDispose(http)
        CkStringBuilder::ckDispose(sbResponse)
        ProcedureReturn
    EndIf

    jsonResp.i = CkJsonObject::ckCreate()
    If jsonResp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckLoadSb(jsonResp,sbResponse)
    CkJsonObject::setCkEmitCompact(jsonResp, 0)

    Debug CkJsonObject::ckEmit(jsonResp)

    ; 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.

    cert.i = CkCert::ckCreate()
    If cert.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkCert::ckLoadFromBase64(cert,CkJsonObject::ckStringOf(jsonResp,"cer"))
    If success = 0
        Debug CkCert::ckLastErrorText(cert)
        Debug "Failed to load certificate from Base64 DER."
        CkJsonObject::ckDispose(json)
        CkHttp::ckDispose(http)
        CkStringBuilder::ckDispose(sbResponse)
        CkJsonObject::ckDispose(jsonResp)
        CkCert::ckDispose(cert)
        ProcedureReturn
    EndIf

    ; 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"
    sbId.i = CkStringBuilder::ckCreate()
    If sbId.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkStringBuilder::ckAppend(sbId,CkJsonObject::ckStringOf(jsonResp,"id"))
    certVersion.s = CkStringBuilder::ckGetAfterFinal(sbId,"/",0)
    Debug "The key vault cert version is " + certVersion

    ; {
    ;   "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
    ;     }
    ;   }
    ; }


    CkJsonObject::ckDispose(json)
    CkHttp::ckDispose(http)
    CkStringBuilder::ckDispose(sbResponse)
    CkJsonObject::ckDispose(jsonResp)
    CkCert::ckDispose(cert)
    CkStringBuilder::ckDispose(sbId)


    ProcedureReturn
EndProcedure