Searching an LDAP Directory

The following example uses LDAP call routines to search an LDAP directory and process the search results.

data _null_;

  length entryname $200 attrName $100 value $100 filter $100;

  rc =0; handle =0;
  server="alpair01.unx.com";
  port=8010;
  base="sasComponent=sasPublishSubscribe,cn=SAS,o=Alpine Airlines,c=US";
  bindDN="";  Pw="";

  /* open connection to LDAP server */
  call ldaps_open(handle, server, port, base, bindDn, Pw, rc);
  if rc ne 0 then do;
     msg = sysmsg();
     put msg;
  end;
  else
     put "LDAPS_OPEN call successful.";


  shandle=0;
  num=0;
  filter="(&(saschannelcn=DeleteTest)(objectclass=*))";
  attrs="description";

  /* search the LDAP directory */
  call ldaps_search(handle,shandle,filter, attrs, num, rc);
  if rc ne 0 then do;
     msg = sysmsg();
     put msg;
  end;
  else do;
     put " ";
     put "LDAPS_SEARCH call successful.";
     put "Num entries returned is " num;
     put " ";
  end;

  do eIndex = 1 to num;
    numAttrs=0;
    entryname='';

    /* retrieve each entry name and number of attributes */
    call ldaps_entry(shandle, 1,entryname, numAttrs, rc);
    if rc ne 0 then do;
       msg = sysmsg();
       put msg;
    end;
    else do;
       put "  ";
       put "LDAPS_ENTRY call successful.";
       put "Num attributes returned is " numAttrs;
    end;

    /* for each attribute, retrieve name and values */
    do aIndex = 1 to numAttrs;
      attrName='';
      numValues=0;
      call ldaps_attrName(shandle, eIndex, aIndex, attrName, numValues, rc);
      if rc ne 0 then do;
         msg = sysmsg();
         put msg;
      end;
     else do;
         put "  ";
         put "Attribute name is " attrName;
         put "Num values returned is " numValues;
      end;

      do vIndex = 1 to numValues;
        call ldaps_attrValue(shandle, eIndex, aIndex, vIndex, value, rc);
        if rc ne 0 then do;
           msg = sysmsg();
           put msg;
        end;
        else do;
          put "Value : " value;
        end;
      end;
    end;
  end;

  /* free search resources */
  call ldaps_free(shandle,rc);
  if rc ne 0 then do;
     msg = sysmsg();
     put msg;
  end;
  else
     put "LDAPS_FREE call successful.";

  /* close connection to LDAP server */
  call ldaps_close(handle,rc);
  if rc ne 0 then do;
     msg = sysmsg();
     put msg;
  end;
  else
     put "LDAPS_CLOSE call successful.";
  run;
quit;