bvstone

Base64 Encoding a File with RPG

Posted:

Base64 Encoding a File with RPG

This is some sample source of how I convert a file in the IFS to Base 64 using the APR Base 64 APIs.  This isn't complete as there were some small additional functions used in this, but they should be pretty self explanatory and easily substituted with functions of your own.

It also is pretty old and doesn't include any /copy source for the IFS functions, but they are also readily available.

      /COPY QCOPYSRC,APR_B64_H
      *//////////////////////////////////////////////////////////////*
      * (#b64encFile)                                                *
      *//////////////////////////////////////////////////////////////*
     P #b64encFile     B                   export
     D #b64encFile     PI            10i 0
     D   InFile                     256    value
     D   OutFile                    256    value
     D   OutCCSID                    10i 0 value options(*NOPASS)
     D   Replace                       N   value options(*NOPASS)
     D   DoCRLF                        N   value options(*NOPASS)
     D   Out_errMsg                 256    options(*NOPASS)

     D l_replace       S               N
     D l_doCRLF        S               N
     D l_inFile        S            256
     D l_outFile       S            256
     D l_ccsid         S             10i 0
     D inFDesc         S             10i 0
     D outFDesc        S             10i 0
     D rc              S             10i 0
     D b64rc           S             10i 0
     D totalBytesOut   S             10i 0
     D readSize        S             10i 0 INZ(57)
     D bytesRead       S             10i 0 
     D bytesOut        S             10i 0
     D dataRead        S            256
     D dataOut         S           2048
     D CRLF            S              2    INZ(X'0D25')
      *--------------------------------------------------------------*
      /free

       if (%parms > 3);
         l_replace = Replace;
       else;
         l_replace = *OFF;
       endif;

       if (%parms > 4);
         l_doCRLF = DoCRLF;
       else;
         l_doCRLF = *OFF;
       endif;

       // Do error checking here like if InFile = Outfile, InFile exists,
       //  outfile exists and replace = *NO, etc.

       l_inFile = %trim(InFile) + X'00';
       l_outFile = %trim(OutFile) + X'00';

       OFlag = O_RDONLY;
       inFDesc = openstmf(l_inFile:OFlag);

       if (inFDesc < 0);
         // Error opening InFile
       endif;

       if (%parms > 2);

         if (OutCCSID > 0);
           l_ccsid = OutCCSID;
         else;
           l_ccsid = #getStmfCCSID(InFile);
         endif;

       else;
         l_ccsid = #getStmfCCSID(InFile);
       endif;

       Mode = S_IRWXU + S_IRWXG + S_IRWXO;
       Oflag = O_CREATE + O_WRONLY + O_TRUNC + O_TEXTDATA +
               O_CCSID + O_TEXT_CREAT;
       outFDesc = openstmf(l_outFile:Oflag:Mode:l_ccsid:0);

       if (outFDesc < 0);
         // Error opening OutFile
       endif;

       bytesRead = readstmf(inFDesc:%addr(dataRead):readSize);

       dow (bytesRead > 0);
         dataRead = %Subst(dataRead:1:bytesRead);
         dataOut = ' ';
         b64rc = apr_base64_encode_binary(dataOut:dataRead:BytesRead);

         if (b64rc <= 0);
           // Error converting to Base 64 
         else;
           exsr $writeOut;
         endif;

         bytesRead = readstmf(inFDesc:%addr(dataRead):readSize);
       enddo;

       closestmf(InFDesc);
       closestmf(OutFDesc);

       return totalBytesOut;
       //***************************************************************
       //* Write to Output Stream File
       //***************************************************************
       begsr $writeOut;

         bytesOut = writestmf(outFDesc:%addr(dataOut):b64rc-1);

         if (bytesOut <= 0);
           // Error writing to OutFile
         else;
           totalBytesOut += bytesOut;
         endif;

         if (l_doCRLF);
           bytesOut = writestmf(outFDesc:%addr(CRLF):2);

           if (bytesOut <= 0);
             // Error writing CRLF to OutFile
           else;
             totalBytesOut += bytesOut;
           endif;

         endif;

       endsr;

      /end-free
      *--------------------------------------------------------------*
     P #b64encFile     E

 

 

 


Last edited 09/06/2018 at 14:41:23



Latest Posts:

SSL Handshake Errors with GETURI, MAILTOOL and GreenTools Products SSL Handshake Errors with GETURI, MAILTOOL and GreenTools Products
Posted by October 18, 2021
BVSTools >> BVSTools Software Discussion
MAILTOOL Updated to Retry Sending when GSK SSL Handshake Error 415 (GSK_ERROR_BAD_PEER) is Encountered MAILTOOL Updated to Retry Sending when GSK SSL Handshake Error 415 (GSK_ERROR_BAD_PEER) is Encountered
Posted by August 19, 2021
BVSTools >> BVSTools Announcements >> eMail Tool (MAILTOOL) Specific Announcements
MAILTOOL Updated to Allow List-Unsubscribe and User Defined Headers MAILTOOL Updated to Allow List-Unsubscribe and User Defined Headers
Posted by August 13, 2021
BVSTools >> BVSTools Announcements >> eMail Tool (MAILTOOL) Specific Announcements
AWS signing process in as400 AWS signing process in as400
Posted by August 13, 2021
Programming >> Web Programming
2022 License Price Increase and Consulting Update for Non-Software Specific Assistance 2022 License Price Increase and Consulting Update for Non-Software Specific Assistance
Posted by August 9, 2021
BVSTools >> BVSTools Announcements
Journaling the IFS, SPLTOOL and Java Journaling the IFS, SPLTOOL and Java
Posted by August 4, 2021
BVSTools >> BVSTools Announcements >> Spooled File Tools (SPLTOOL) Specific Announcements
G4MSMAIL Now Allows Wildcard Attachments G4MSMAIL Now Allows Wildcard Attachments
Posted by June 10, 2021
BVSTools >> BVSTools Announcements >> GreenTools for Microsoft Apps (G4MS) Specific Announcements
G4G Update for Uploading Large Files G4G Update for Uploading Large Files
Posted by May 28, 2021
BVSTools >> BVSTools Announcements >> GreenTools for G Suite (Google Apps) (G4G) Specific Announcements
Can We Purchase License Keys for More Than One Year at a Time? Can We Purchase License Keys for More Than One Year at a Time?
Posted by May 21, 2021
BVSTools >> BVSTools Announcements
JOBWATCH 5.10 Released with New Feature to Monitor CPU Percentages JOBWATCH 5.10 Released with New Feature to Monitor CPU Percentages
Posted by May 10, 2021
BVSTools >> BVSTools Announcements >> Job Watch (JOBWATCH) Specific Announcements
Iseries Access data transfer Iseries Access data transfer
Posted by April 29, 2021
IBM Power Systems >> (QGPL) IBM i
YAJL - Parsing YAJL - Parsing
Posted by April 4, 2021
Programming >> RPG Programming
Create LPAR partition and install OS Create LPAR partition and install OS
Posted by March 24, 2021
IBM Power Systems >> (QGPL) IBM i
G4MS Now Allows User/Password Authentication Option G4MS Now Allows User/Password Authentication Option
Posted by March 16, 2021
BVSTools >> BVSTools Announcements >> GreenTools for Microsoft Apps (G4MS) Specific Announcements
IPDS printer file using CHRSIZ IPDS printer file using CHRSIZ
Posted by February 25, 2021
Programming >> RPG Programming

Reply




Copyright 1983-2020 BVSTools
GreenBoard(v3) Powered by the eRPG SDK, MAILTOOL Plus!, GreenTools for Google Apps, jQuery, jQuery UI, BlockUI, CKEditor and running on the IBM i (AKA AS/400, iSeries, System i).