Red Hat NETSCAPE MANAGEMENT SYSTEM 7.0 - AGENT GUIDE Guida Utente Scaricare il pdf (Pagina 43)

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SPS Concepts and Terminology

The Secunia CSI user should become familiar with the concepts and

terminology described in this section.

What does a SPS package consists of?

The package consists of two parts; applicability rules and SPS

package. The applicability rules are used by WSUS to only execute the

package on computers that are applicable for the selected package.

The SPS package consists of the payload that is then executed on the

computer.

The image on the right hand side illustrates the conceptual structure

of a SPS package. The following sections will explain in greater detail

all the components that make a SPS package.

Applicability Rules

The applicability rules are rules used to decide whether or not a package should be offered to a

client. These rules are as follows:

IsInstallableApplicabilityRule – Obtains the rules for determining whether or not

this item is installable on a given computer. It generally consists of paths and version

information of relevant files.

IsInstalledApplicabilityRule – Obtains the rules for determining whether or not this

item is already installed on a given computer. It generally consists of keys and value

information of relevant registry keys.

IsSupersededApplicabilityRule – Obtains or sets the rules for determining whether

or not this item is superseded by another update on a given computer. It generally

consists of paths and version information of relevant files.

SPS Package

The SPS package must always consist of at least one file that is placed at index “0”, this is the

execution flow script, and any additional files will be numbered accordingly in ascending order.

The execution flow script is either JScript (JavaScript), VBScript or Powershell script; by default

a JavaScript example is provided in the SPS Package Creation Wizard.

The script will be automatically extracted from the SPS package and executed. Based on the

execution flow more files can then be extracted and executed from the SPS package,

referenced by their index order.

Execution Flow Script

This execution flow script is always executed. This is the file with index 0, and as such it will

always be the first to run.

In the execution flow script you can define any other files to be extracted and executed. The

default execution flow template that is provided in the SPS Package Creation Wizard will

extract the first file supplied in the package with the specified silent parameters (usually this is

the patch file provided by the vendor). Any other files added to the package will NOT be

extracted or executed when using the example script.

If you create your own execution flow, no user interaction is available. To make your execution

flow totally unattended, use log files accordingly for easy troubleshooting.

Files

The SPS package supports additional files besides the execution flow script. The added files will

have array indices from 1 to n where the first file will have index 1, and the additional files are

numbered in ascending order.

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Red Hat NETSCAPE MANAGEMENT SYSTEM 7.0 - AGENT GUIDE Guida Utente Pagina 43

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