Blue Coat Systems Time Clock Proxy SG Manuale Utente

Chapter 5:

An action takes arguments and is wrapped in a user-named action definition block. When the action 
definition is called from a policy rule, any actions it contains operate on their respective arguments. 
Within a rule, named action definitions are enabled and disabled using the 

action( )

property.

Actions take the following general form:

action(argument1, ...)

An action block is limited to the common subset among the allowed layers of each of the actions it 
contains. Actions appear only within action definitions. They cannot appear in 

<Admin>

 layers. 

Argument Syntax

The allowed syntax for action arguments depends on the action. 

•

String—A string argument must be quoted if it contains whitespace or other special characters. 
For example: 

log_message(“Access alert”)

. 

•

Enumeration—Actions such as 

delete( )

 use as an argument a token specifying the transaction 

component on which to act. For example: a header name such as 

request_header.Referer

.

•

Regular expression—Several actions take regular expressions. For more information about writing 
regular expressions, refer to Appendix E, “Using Regular Expressions,” in the Blue Coat ProxySG 
Configuration and Management Guide.

•

Variable substitution—The quoted strings in some action arguments can include variable 
substitution substrings. These include the various versions of the replacement argument of the 

redirect( )

, 

rewrite( )

, and 

rewrite( )

 actions, and the string argument in the 

append( )

, 

log_message( )

, and 

set(header, string)

 actions. A variable substitution is a substring of the 

form:

$(name)

where 

 is one of the allowed substitution variables.

For a complete list of substitutions, see Appendix D: "CPL Substitutions".

Action Reference

The remainder of this chapter lists the actions and their accepted values. It also provides the context in 
which each action can be used and examples of how to use them.