I want to know how to check if the header exists.

[rtaka...@gmail.com]

Hi there.

I want to add a score if a specific header exists.

I using regexp as follows now.

Exsample: (/local.d/regexp.conf)

---

HEADER_EXISTS {

     re = "X-Header=/.*/iH";

     group = "header";

     score = 1.0;

}

---

However, I do not think this is a good writing style.

Is there any better way to write it?

[Andrew Lewis]

Hi,

> However, I do not think this is a good writing style.
> Is there any better way to write it?

That's probably fine. Way to write this with a Lua rule could be as follows:

~~~
-- /etc/rspamd/rspamd.local.lua
rspamd_config.HEADER_EXISTS_FOO = {
callback = function(task)
return task:get_header('Foo') and true or false
end,
score = 1.0
}
~~~

Best,
-AL.

[Vsevolod Stakhov]

No, that's slower.

https://rspamd.com/doc/modules/regexp.html#internal-functions

[rtaka...@gmail.com]

>No, that's slower. 
>
>https://rspamd.com/doc/modules/regexp.html#internal-functions 

Is it better to use "header_exists" of Internal functions?

----

-- /etc/rspamd/rspamd.local.lua

rspamd_config.HEADER_EXISTS_FOO = { 

   callback = function(task) 

     return task:header_exists('Foo') and true or false 

   end, 

   score = 1.0 

}

----

[Andrew Lewis]

> Is it better to use "header_exists" of Internal functions?

Yes.

~~~
-- /etc/rspamd/rspamd.local.lua
local reconf = config['regexp']
reconf['HEADER_EXISTS_FOO'] = {
re = 'header_exists("Foo")',