report zsam_hide no standard page heading.

************************************************************************
* This program hides any ABAP's source code and protects it with a
* password in this source code.
*
* After hiding, you can still run the abap (the load version is intact)
* but it cannot be displayed, edited, traced, transported or generated.
*
* If the ABAP is not hidden, the program hides it, if it is hidden, it
* unhide it.
* Remember to hide this program first!
************************************************************************

selection-screen begin of block block.
parameters: program(30) obligatory.
selection-screen begin of line.
selection-screen comment 1(8) pwd.
selection-screen position 35.
parameters: password(8) modif id aaa.
selection-screen end of line.
selection-screen end of block block.


*
data: message(60) type c.
*

at selection-screen output.

loop at screen.
if screen-group1 = 'AAA'.
screen-invisible = '1'.
modify screen.
endif.
endloop.

*
initialization.
pwd = 'Password'.
*

start-of-selection.

tables: trdir.

* User name and password check
if password <> 'ABCDEFG'.
write: / 'Wrong password'.
exit.
endif.

* SAP owned?
if not program cp 'Z*' and not program cp 'Y*'.
write: / 'Do not hide original SAP programs!'.
exit.
endif.

* Exists?
select single * from trdir where name = program.
if sy-subrc <> 0.
write: / 'Program does not exists!'.
exit.
endif.

* Does it have a current generated version?
data: f1 type d, f3 type d.
data: f2 type t, f4 type t.
EXEC SQL.
SELECT UDAT, UTIME, SDAT, STIME INTO :F1, :F2, :F3, :F4 FROM D010LINF
WHERE PROG = :PROGRAM
ENDEXEC.

if f1 < f3 or ( f1 = f3 and f2 < f4 ).
write: / 'The program has no recent generated version!'.
exit.
endif.

* Compose a new program name
data: new_name(30), i type i, j type i.
new_name = program.

do 30 times.
i = sy-index - 1.
new_name+i(1) = '_'.

* Search for acceptable program name variations
j = 0.

select * from trdir where name like new_name.
j = j + 1.
endselect.

if j = 1.
exit.
endif.

new_name = program.
enddo.

* Cannot generate appropriate program name
if j > 1.
write: / 'Cannot generate appropriate program name'.
exit.
endif.

* Check if it is already hidden
data: f5(30).

EXEC SQL.
SELECT PROG INTO :F5 FROM D010S WHERE PROG = :NEW_NAME
ENDEXEC.

if f5 is initial.

* There is no such hidden program, hide it
EXEC SQL.
UPDATE D010S SET PROG = :NEW_NAME WHERE PROG = :PROGRAM
ENDEXEC.
concatenate 'Program' :program 'was hidden.'
into message separated by space.
else.

* There is already a hidden program there, unhide it
EXEC SQL.
UPDATE D010S SET PROG = :PROGRAM WHERE PROG = :NEW_NAME
ENDEXEC.

concatenate 'Program' :program 'was restored.'
into message separated by space.

endif.

write message.

*** end of program

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