Re: Passing an as400structure in a ServiceProgramCall

I can offer you one way too "cheat" Pete.

Code thew same interface in RPG (or I guess maybe the C compiler has it to) and have it generate the PCML for you. <grin>




> On Apr 3, 2022, at 5:40 PM, Pete Helgren <[email protected]> wrote:
> 
> Thanks David,
> 
> EASIER is in the eye of the beholder.  PCML doesn't exactly look easy and I am up against the same unknowns.  Here is the PCML so far:
> 
> <pcml version="1.0">
> 
> <!-- PCML source for calling "Renew Certificate" (QYCDRNWC) API -->
> 
>   <!-- Format RNWC0300 - Other formats are available -->
>   <struct name="rnwc0300">
>     <data name="offsettofile"               type="int" length="4"  usage="input"/>
>     <data name="lengthoffilename"    type="int"    length="4" usage="input"/>
>     <data name="certfile"                      type="char" length="lengthoffilename" usage="input"/>
>   </struct>
> 
>   <!-- Program QYCDRNWC and its parameter list for retrieving RNWC0300 format -->
>   <program name="qycdrnwc" path="/QSYS.LIB/QICSS.LIB/QYCDRNWC.SRVPGM">
>     <data name="certreqdata"          type="struct" struct="rnwc0300"   usage="input"/>
>     <data name="reqdataLength"     type="int" length="4"          usage="input" />   ???????????
>     <data name="format"                   type="char" length="8"          usage="input"    init="RNWC0300"/>
>     <data name="errorCode"             type="int" length="4"          usage="input"    init="0"/>
>   </program>
> </pcml>
> 
> The structure for the RNWC0300 format is:
> 
> Offset
> Dec  Hex    Type               Field
> 0        0       Binary (4)      Offset to certificate path and file name
> 4        4       Binary (4)       Length of certificate path and file name
> Char (*)     Certificate path and file name
> 
> So my first "stump the chump" query was "What PCML data type is a Char(*)??" You can see my guess above. Is that correct? Just a character string of a certain length?  But, I think it is a pointer to the character string but couldn't find a good example of a Char(*) as an input parameter in a format structure.
> 
> The second conundrum was: How do I get the length of the structure? The parameters needed by the API are:
> 
> Required Parameter Group:
> 
> 1    Certificate request data    Input    Char(*)
> 
> 2    Length of certificate request data    Input    Binary(4)
> 
> 3    Format name    Input    Char(8)
> 
> 4    Error Code    I/O    Char(*)
> 
> 
> Not sure if the whole thing is OK but I couldn't figure out how to get the length of the certificate request data (structure). I saw documentation in the PCML docs on "offset" and "offsetfrom" but didn't know if that is how to go about it.
> 
> This hasn't exactly been *easy* but I am willing to press on with a little hand-holding.....
> 
> Pete Helgren
> www.petesworkshop.com
> GIAC Secure Software Programmer-Java
> AWS Certified Cloud Practitioner
> Microsoft Certified: Azure Fundamentals
> Twitter - Sys_i_Geek  IBM_i_Geek
> 
> On 4/2/2022 5:16 PM, David Gibbs via JAVA400-L wrote:
>> Use pcml. It handles memory allocation and is much easier to use.
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