(PureBasic) CSR Get Extension Request

See more CSR Examples

If a CSR contains a 1.2.840.113549.1.9.14 extensionRequest, then this method will return the extension request in XML format.

Note: This example requires Chilkat v9.5.0.91 or greater.

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IncludeFile "CkXml.pb"
IncludeFile "CkCsr.pb"
IncludeFile "CkFileAccess.pb"

Procedure ChilkatExample()

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

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

    ; Load a CSR PEM file.  The file should contain content that looks like this:
    ; 
    ; 	-----BEGIN CERTIFICATE REQUEST-----
    ; 	MII...
    ; 	....
    ; 	....
    ; 	....
    ; 	-----END CERTIFICATE REQUEST-----

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

    csrPem.s = CkFileAccess::ckReadEntireTextFile(fac,"qa_data/csr/sample.pem","utf-8")

    success.i = CkCsr::ckLoadCsrPem(csr,csrPem)
    If success <> 1
        Debug CkCsr::ckLastErrorText(csr)
        CkCsr::ckDispose(csr)
        CkFileAccess::ckDispose(fac)
        ProcedureReturn
    EndIf

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

    success = CkCsr::ckGetExtensionRequest(csr,xml)
    If success <> 1
        Debug "CSR has no extensionRequest."
        CkCsr::ckDispose(csr)
        CkFileAccess::ckDispose(fac)
        CkXml::ckDispose(xml)
        ProcedureReturn
    EndIf

    xmlStr.s = CkXml::ckGetXml(xml)
    Debug xmlStr

    ; Sample output:

    ; <?xml version="1.0" encoding="utf-8"?>
    ; <set>
    ;     <sequence>
    ;         <sequence>
    ;             <oid>1.3.6.1.4.1.311.20.2</oid>
    ;             <asnOctets>
    ;                 <printable>ZATCA-Code-Signing</printable>
    ;             </asnOctets>
    ;         </sequence>
    ;         <sequence>
    ;             <oid>2.5.29.17</oid>
    ;             <asnOctets>
    ;                 <sequence>
    ;                     <contextSpecific tag="4" constructed="1">
    ;                         <sequence>
    ;                             <set>
    ;                                 <sequence>
    ;                                     <oid>2.5.4.4</oid>
    ;                                     <utf8>334623324234325</utf8>
    ;                                 </sequence>
    ;                             </set>
    ;                             <set>
    ;                                 <sequence>
    ;                                     <oid>0.9.2342.19200300.100.1.1</oid>
    ;                                     <utf8>310122393500003</utf8>
    ;                                 </sequence>
    ;                             </set>
    ;                             <set>
    ;                                 <sequence>
    ;                                     <oid>2.5.4.12</oid>
    ;                                     <utf8>0000</utf8>
    ;                                 </sequence>
    ;                             </set>
    ;                             <set>
    ;                                 <sequence>
    ;                                     <oid>2.5.4.26</oid>
    ;                                     <utf8>Sample E</utf8>
    ;                                 </sequence>
    ;                             </set>
    ;                             <set>
    ;                                 <sequence>
    ;                                     <oid>2.5.4.15</oid>
    ;                                     <utf8>Sample Business</utf8>
    ;                                 </sequence>
    ;                             </set>
    ;                         </sequence>
    ;                     </contextSpecific>
    ;                 </sequence>
    ;             </asnOctets>
    ;         </sequence>
    ;     </sequence>
    ; </set>

    ; Use this online tool to generate parsing code from sample XML: 
    ; Generate Parsing Code from XML


    CkCsr::ckDispose(csr)
    CkFileAccess::ckDispose(fac)
    CkXml::ckDispose(xml)


    ProcedureReturn
EndProcedure