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mod_firewall/README.markdown @ 2110:c26b28c65d47

mod_firewall: README: Document INSPECT's pattern matching ability
author Matthew Wild <mwild1@gmail.com>
date Thu, 17 Mar 2016 11:39:43 +0000
parent 2108:573fe9825fba
child 2111:4e434abaf8fc
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2109:9db4113d0cb5 2110:c26b28c65d47
146 segments by '/'. Each segment describes an element by its name, 146 segments by '/'. Each segment describes an element by its name,
147 optionally prefixed by its namespace in curly braces ('{...}'). If the 147 optionally prefixed by its namespace in curly braces ('{...}'). If the
148 path ends with a '\#' then the text content of the last element will be 148 path ends with a '\#' then the text content of the last element will be
149 returned. If the path ends with '@name' then the value of the attribute 149 returned. If the path ends with '@name' then the value of the attribute
150 'name' will be returned. 150 'name' will be returned.
151
152 You can use INSPECT to test for the existence of an element or attribute,
153 or you can see if it is equal to a string by appending `=STRING` (as in the
154 example above). Finally,you can also test whether it matches a given Lua
155 pattern by using `~=PATTERN`.
151 156
152 INSPECT is somewhat slower than the other stanza matching conditions. To 157 INSPECT is somewhat slower than the other stanza matching conditions. To
153 minimise performance impact, always place it below other faster 158 minimise performance impact, always place it below other faster
154 condition checks where possible (e.g. above we first checked KIND, TYPE 159 condition checks where possible (e.g. above we first checked KIND, TYPE
155 and PAYLOAD matched before INSPECT). 160 and PAYLOAD matched before INSPECT).