Four Js Development Tools Forum

Hello,

has anyone an idea to change the Linux-User Password via a GDC-Application?
The user should not use a Terminal-Application to enter passwd.

We are looking for a little Script which can be created and executed within the Application.

Any idea?

Thanks Stefan.

Hi Stefan

the following snippet works for me !


let wk_log_changepwd = g_tmpdir clipped,g_separator, "changepasswd_",
                       g_s_pid using "<<<<<<<<<<<&", ".log"

let wk_cmd = 'echo -e "',ri.password_old clipped,'\n',
             ri.password_new clipped,'\n',
             ri.password_cnf clipped,'" | passwd  &>',wk_log_changepwd

run wk_cmd returning wk_exit_code

bye

An area you can explore is to utilise GDC Connection Strings in your GDC Shortcut settings.  See step 10 here http://4js.com/online_documentation/fjs-gdc-manual-html/#gdc-topics/t_gdc_applications_shortcuts_creating_direct.html.  The technique is to add extra entries for the text you expect to appear when you are required to change your password, and have the GDC respond by prompting for the new password and sending it.  I can't recall if it was a technique that was eventually used in production, or if it fell into the thats interesting but it does not do quite what we need it to do category.  The GDC Connection strings were designed to manage the connection, and this is going beyond their initial design criteria hence the hesitation.

Hi,

thanks.
I tired the command with "echo -e"....
this is working fine.
the Result of the command I write in a file to show the user a message, if passwd raises an error....

#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
function user_passwd(lo_alt, lo_neu)
define lo_alt          string,
       lo_neu          string,
       lo_ch           base.Channel,
       lo_stm          string,
       lo_result       string,
       lo_logdatei     string,
       lo_egal         string,
       lo_pw_geaendert boolean,
       lo_errorlevel   string
 
   -- ! | ? & % " ' \ sind nicht erlaubt!
 
   let lo_alt          = lo_alt clipped
   let lo_neu          = lo_neu clipped
   let lo_pw_geaendert = false
   let lo_errorlevel   = ""
 
   let lo_logdatei = vlogin clipped, "_passwd.log"
   let lo_logdatei = lo_logdatei clipped
   let lo_egal     = os.path.delete(lo_logdatei)
 
   let lo_stm = "echo -e '", lo_alt, "\\n", lo_neu, "\\n", lo_neu, "' | passwd 1>>", lo_logdatei, " 2>> ", lo_logdatei
   run lo_stm returning lo_errorlevel
 
   if lo_errorlevel = 0 then
      let lo_pw_geaendert = true
   else
      let lo_pw_geaendert = false
   end if
 
   let lo_ch = base.channel.create()
   call lo_ch.openFile(lo_logdatei, "r")
   call lo_ch.setdelimiter("")
   while lo_ch.read ([lo_result])
      if lo_result matches "*Ändern des Passworts*" then
         continue while
      end if
      if lo_result matches "*Ändern Passwort*" then
         continue while
      end if
      display lo_result
   end while
   call lo_ch.close()
 
   let lo_egal = os.path.delete(lo_logdatei)
 
   if lo_pw_geaendert = true then
      display "hat geklappt!!!!!"
   else
      display "hat NICHT geklappt!!!!!"
   end if
 
 
end function
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------

Hi folks,

wouldn't it be better to use the openPipe() function instead of calling "run" as in this example? https://4js.com/online_documentation/fjs-fgl-manual-html/#fgl-topics/c_fgl_ClassChannel_example_2.html (https://4js.com/online_documentation/fjs-fgl-manual-html/#fgl-topics/c_fgl_ClassChannel_example_2.html)

Kind regards
Roland

Hi Roland,

I tried the channel.openpipe before. But in the output Files I missed either the "success" part, or the "faild" part (not sure which one)

Stefan