pavlenkodev commented on issue #10730:
URL: https://github.com/apache/apisix/issues/10730#issuecomment-1871786129
> Hi @Vacant2333 The returned functions are as follows.Its main purpose is
to extract the "sub" claim from a JWT found in the "Authorization" header of an
HTTP request. If the header is missing or the JWT is not present, it returns
the default value "not found."
>
> ```
> return function()
> local core = require("apisix.core")
>
> core.ctx.register_var("sub", function(ctx)
> local core = require("apisix.core")
> local jwt = require("resty.jwt")
> local sub_not_found = "not found"
>
> local access_token = core.request.header(ctx, "Authorization")
> local result_value
>
> if not access_token then
> result_value = sub_not_found
> return result_value
> end
>
> local jwt_obj = jwt:load_jwt(access_token)
> result_value = tostring(jwt_obj.payload.sub)
>
> return result_value
> end)
> end
> ```
Due to the different time zones, I couldn't answer right away. Thank you!
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