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Sun Java System Web Proxy Server 4.0.1 Developer's Guide 

Chapter 6
Using Wildcard Patterns

This chapter describes the format of wildcard patterns used by the Sun Java System Web Proxy Server. These wildcards are used in:

Wildcard patterns use special characters. If you want to use one of these characters without the special meaning, precede it with a backslash (\) character.

This chapter has the following sections:


Wildcard Patterns

The following table describes wildcard patterns, listing the pattern and its use.

Table 6-1  Wildcard Patterns

Pattern

Use

*

Match zero or more characters.

?

Match exactly one occurrence of any character.

|

An or expression. The substrings used with this operator can contain other special characters such as * or $. The substrings must be enclosed in parentheses, for example, (a|b|c), but the parentheses cannot be nested.

$

Match the end of the string. This is useful in or expressions.

[abc]

Match one occurrence of the characters a, b, or c. Within these expressions, the only character that needs to be treated as a special character is ]; all others are not special.

[a-z]

Match one occurrence of a character between a and z.

[^az]

Match any character except a or z.

*~

This expression, followed by another expression, removes any pattern matching the second expression.

*

Match zero or more characters.


Wildcard Examples

The following table provides wildcard examples, listing the pattern and the result.

Table 6-2  Wildcard Examples

Pattern

Result

*.netscape.com

Matches any string ending with the characters .netscape.com.

(quark|energy).netscape.com

Matches either quark.netscape.com or energy.netscape.com.

198.93.9[23].???

Matches a numeric string starting with either 198.93.92 or 198.93.93 and ending with any 3 characters.

*.*

Matches any string with a period in it.

*~netscape-*

Matches any string except those starting with netscape-.

*.netscape.com~quark.netscape.com

Matches any host from domain netscape.com except for a single host quark.netscape.com.

*.netscape.com~(quark|energy
|neutrino).netscape.com

Matches any host from domain .netscape.com except for hosts quark.netscape.com, energy.netscape.com, and neutrino.netscape.com.

*.com~*.netscape.com

Matches any host from domain .com except for hosts from subdomain netscape.com.

type=*~magnus-internal/*

Matches any type that does not start with magnus-internal/.

This wildcard pattern is used in the file obj.conf in the catch-all Service directive.



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Part No: 819-3652-10.   Copyright 2004 Sun Microsystems, Inc. All rights reserved.