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ProxySG Content Policy Language Guide

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condition ::= trigger "=" expression 

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trigger ::= identifier | identifier "." word 

•

expression ::= term | list 

•

list ::= "(" ((pattern ",")* pattern)? ")" 

•

disjunction ::= conjunction | disjunction "||" conjunction 

•

conjunction ::= term | conjunction "&&" term 

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term ::= pattern | "(" disjunction ")" | "!" term 

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pattern ::= word | 'string' | "string" 

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word ::= sequence of characters not including whitespace, & | ( ) < > [ ] ; ! = 

" ' 

•

string 

::= sequence of characters that may including whitespace, & | ( ) < > [ ] ; 

! =. The characters " and ' may be enclosed within a string delimited by the 

alternate delimiter.

Pattern Types 

Different triggers support different pattern syntaxes. 

A pattern for a boolean trigger has one of the following forms: 

boolean ::= yes | no | true | false | on | off 

The pattern for a numeric trigger can be either an integer or a range of integers. Numeric patterns 
cannot contain white space. 

trigger=I 

Test if trigger 

== I

. 

trigger=I..J 

Test if trigger 

>= I

 and trigger 

<= J

 (where 

I <= J

). For example, 

time=0900..1700

 tests if the 

time is between 9:00 and 17:00 inclusive. 

trigger=J..I 

Test if trigger 

>= J

 or trigger 

<= I

 (where 

J > I

). For example, 

minute=45..15

 tests if the minute 

of the hour is between 45 and 15 inclusive. 

trigger=I.. 

Test if trigger 

>= I

. For example, 

bitrate=56k..

 tests if the bitrate is greater than or equal to 

56000. 

trigger=..J 

Test if trigger 

<= J

. For example, 

bitrate=..56k

 tests if the bitrate is less than or equal to 56000. 

Some triggers have IP address patterns. This can be either a literal IP address, such as 1.2.3.4, or an IP 
subnet pattern, such as 1.2.0.0/16, or a name defined by a 

 statement. 

Some triggers have regex patterns. This is a Perl 5 regular expression that matches a substring of the 
trigger value; it is not an anchored match unless an anchor is specified as part of the pattern.