Network Services (inetd) - YaST2 configuration module

module inside

$Id$

Martin Vidner
Petr Hadraba

Workflow

Workflow


Main scheme - main sequence

packages(PackageDialog()) -> read(ReadDialog()) -> main(InetdDialog()) -> write(WriteDialog())
Note: The `->' means, that previews step terminates successfuly.

Package detection, installation - PackageDialog()

This dialog obtains status of installed packages (inetd or xinetd). The status is stored into Inetd::inetd_installed and Inetd::xinetd_installed. Used functions are GetInetdInstalled() and GetXinetdInstalled() in routines.ycp. I'm using `rpm -q [package_name] 2>&1 > /dev/nul' called with
SCR::Execute(.target.bash, ... ).
If no packages are installed, the dialog is displayed for user choice, what to install. Note, that only one package of inetd or xinetd is installed, the dialog is skipped.
PackageDialog() fills Inetd::netd_service (`inetd,`xinetd,`both),Inetd::inetd_status (with GetInetdStatus()), Inetd::xinetd_status (with GetXinetdStatus()).
If only one service (inetd or xinetd) is installed, the Inetd::netd_status is also filled with Inetd::[.*]netd_status.

read - ReadDialog()

ReadDialog() calls Inetd::Read().
Inetd::Read() reads configuration depending on netd_service value. If inetd and xinetd are installed, both configuration is loaded. The variables are inetd_conf and xinetd_conf.
Inetd::Read() also initialize xinetd_packages variable with the following SCR call
SCR::Read(.target.ycp, Direcorty::Datadir + "/all-services.ycp");
all-services.ycp will be generated during distribution build and contains informations about packages with services that needs xinetd.

main - InetdDialog()

After reading configuration, main configuration dialog is displayed. This dialog is implemented in InetdDialog() in dialogs.ycp.
If both services (inetd and xinetd) are installed, the dialog about what to configure is displayed. This is made by calling WhatToConfigureDialog().
Finally, Inetd::configured_service is filled according to selected (or installed) service. The configuration of this service is stored into default variable Inetd::netd_conf.
There is, in new version of YaST2 Inetd module, new feature. Main table now remeberes last selected item. This feature is implemented in indexTable() function and iid_to_index and index_to_iid variables.

write - WriteDialog()

WriteDialog() calls Inetd::Write().
Inetd::Write() simply writes configuration and if in autoinstallation mode, required packages are installed first. After installing packages, the mergeAfterInstall() function is called. This function merges new configuration of new packages with user changes in "old" configuration.