Awesome

Woothee lua resty

The Lua-Openresty implementation of Project Woothee, which is multi-language user-agent strings parsers.

Installation

luarocks install lua-resty-woothee

Synopsis

Basic Usage

server {
    location /test {
        content_by_lua_block {
            local woothee = require "resty.woothee"

            -- parse
            local r = woothee.parse(ngx.var.http_user_agent)
            --  => {"name": "xxx", "category": "xxx", "os": "xxx", "version": "xxx", "vendor": "xxx"}

            -- crawler?
            local crawler = woothee.is_crawler(ngx.var.http_user_agent)
            --  => true

            ngx.header.content_type = "text/plain"
            ngx.say(r.name)
        }
    }
}

Include Nginx Log

log_format woothee_format
                  '$remote_addr - $remote_user [$time_local] '
                  '"$request" $status $body_bytes_sent '
                  '"$http_referer" "$http_user_agent" '
                  '"$x_wt_name" "$x_wt_category" "$x_wt_os" "$x_wt_version" "$x_wt_vendor" "$x_wt_os_version"'
                  ;

server {

    access_log /var/log/nginx/nginx-access-woothee.log woothee_format;

    # set nginx valiables
    set $x_wt_name       '-';
    set $x_wt_category   '-';
    set $x_wt_os         '-';
    set $x_wt_version    '-';
    set $x_wt_vendor     '-';
    set $x_wt_os_version '-';

    location /test {
        content_by_lua_block {
            local woothee = require "resty.woothee"
            local r = woothee.parse(ngx.var.http_user_agent)
            -- set nginx valiables
            ngx.var.x_wt_name       = r.name
            ngx.var.x_wt_category   = r.category
            ngx.var.x_wt_os         = r.os
            ngx.var.x_wt_version    = r.version
            ngx.var.x_wt_vendor     = r.vendor
            ngx.var.x_wt_os_version = r.os_version

            ngx.header.content_type = "text/plain"
            ngx.say(r.name)
        }
    }
}

Forward Backend Server

server {

    # set nginx valiables
    set $x_wt_name       '-';
    set $x_wt_category   '-';
    set $x_wt_os         '-';
    set $x_wt_version    '-';
    set $x_wt_vendor     '-';
    set $x_wt_os_version '-';

    location /test {
        rewrite_by_lua_block {
            local woothee = require "resty.woothee"
            local r = woothee.parse(ngx.var.http_user_agent)
            -- set nginx valiables
            ngx.var.x_wt_name       = r.name
            ngx.var.x_wt_category   = r.category
            ngx.var.x_wt_os         = r.os
            ngx.var.x_wt_version    = r.version
            ngx.var.x_wt_vendor     = r.vendor
            ngx.var.x_wt_os_version = r.os_version
        }

        proxy_pass http://backend-server/;
        # proxy set header
        proxy_set_header X-WT-NAME       $x_wt_name;
        proxy_set_header X-WT-CATEGORY   $x_wt_category;
        proxy_set_header X-WT-OS         $x_wt_os;
        proxy_set_header X-WT-VERSION    $x_wt_version;
        proxy_set_header X-WT-VENDOR     $x_wt_vendor;
        proxy_set_header X-WT-OS-VERSION $x_wt_os_version;
    }
}

For Developer (on Docker)

docker run & run test

make local-all

Authors

TSUYOSHI TORII (toritori0318)

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.