Allow loading of custom rulesets during init.

[rayward]

Loading of custom rulesets (as well as ignoring of built-in ones) is only possible during request phases.

It seems wasteful having to do this for every request if it could be done globally during init.

[sandromodarelli]

To load custom rulesets during init you have to manipulate the global_rulesets table:

local lua_resty_waf = require("resty.waf")
-- delete all default entries
for i=1,#lua_resty_waf.global_rulesets,1 do
    table.remove(lua_resty_waf.global_rulesets)
end
-- add your custom ruleset
table.insert(lua_resty_waf.global_rulesets, "10000_my_custom_ruleset")
lua_resty_waf.init()

your ruleset file must be in the same path of the other rules or in lib_path/rules and it must be named as 10000_my_custom_ruleset.json

[p0pr0ck5]

Hi,

Apologies for the delayed response here.

Previously I thought the same thing as @rayward's proposition, but the table copies necessary to support such functionality were actually much more expensive. I'd be happy to consider for review efficient patches that provide such functionality. Thanks!