Cavemanon/haproxy-protection
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update, dynamic backends based on hostname ,can be updated live control panel/management socket

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This commit is contained in:
Thomas Lynch
2021-12-26 23:56:15 +11:00
parent 6f52ee8977
commit 9557c06aa1
9 changed files with 41 additions and 5 deletions
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2
README.MD
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@ -31,6 +31,8 @@ Add some env vars to docker-compose file:
- POW_COOKIE_SECRET - different random string, a salt for pow cookies
- RAY_ID - string to identify the haproxy node by
- BUCKET_DURATION - how long between bucket changes, invalidating cookies
- BACKEND_NAME - name of backend to build from hosts.map
- SERVER_PREFIX - prefix of server names i.e. <prefix>n where n is the number, in server-template
Run docker compose:
```bash

7
docker-compose.yml
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@ -5,6 +5,7 @@ services:
# context: ./
# dockerfile: tor/Dockerfile
haproxy:
network_mode: "host"
build:
context: ./
dockerfile: haproxy/Dockerfile
@ -15,6 +16,8 @@ services:
- ./haproxy/haproxy.cfg:/etc/haproxy/haproxy.cfg
- ./haproxy/ddos.map:/etc/haproxy/ddos.map
- ./haproxy/hosts.map:/etc/haproxy/hosts.map
- ./haproxy/backends.map:/etc/haproxy/backends.map
- ./haproxy/blocked.map:/etc/haproxy/blocked.map
- ./src/scripts/:/etc/haproxy/scripts/
- ./src/libs/:/etc/haproxy/libs/
- ./haproxy/js/:/var/www/js/
@ -25,7 +28,11 @@ services:
- POW_COOKIE_SECRET=
- RAY_ID=
- BUCKET_DURATION=43200
- BACKEND_NAME="servers"
- SERVER_PREFIX="websrv"
nginx:
ports:
- 81:80
image: "nginx:latest"
volumes:
- ./nginx:/usr/share/nginx/html

0
haproxy/backends.map Normal file
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0
haproxy/blocked.map Normal file
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1
haproxy/ddos.map
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@ -1 +0,0 @@
localhost 1

13
haproxy/haproxy.cfg
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@ -4,7 +4,7 @@ global
log stdout format raw local0 debug
lua-load /etc/haproxy/scripts/register.lua
stats socket /var/run/haproxy.sock mode 666 level admin
stats socket *:2000 level operator
stats socket *:2000 level admin
defaults
mode http
@ -13,11 +13,17 @@ defaults
timeout server 50000ms
frontend http-in
option httplog
bind *:80
bind *:443
acl is_existing_vhost hdr(host),lower,map_str(/etc/haproxy/hosts.map) -m found
http-request silent-drop unless is_existing_vhost
# acl for blocked IPs/subnets
acl blocked_ip_or_subnet src,map_ip(/etc/haproxy/blocked.map) -m found
http-request deny deny_status 403 if blocked_ip_or_subnet
# acl ORs for when ddos_mode_enabled
acl ddos_mode_enabled_override hdr_cnt(xr3la1rfFc) eq 0 # note: global only enables POW not captcha atm until
acl ddos_mode_enabled hdr(host),lower,map(/etc/haproxy/ddos.map) -m bool
@ -47,7 +53,10 @@ frontend http-in
default_backend servers
backend servers
server server1 nginx:80 maxconn 32
mode http
server-template websrv 1-100 0.0.0.0:80 check disabled
use-server %[req.hdr(host),lower,map(/etc/haproxy/backends.map)] if TRUE
#server default 127.0.0.1:80
backend hcaptcha
mode http

1
haproxy/hosts.map
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@ -1 +0,0 @@
localhost

21
src/scripts/hcaptcha.lua
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@ -14,9 +14,28 @@ local pow_cookie_secret = os.getenv("POW_COOKIE_SECRET")
local ray_id = os.getenv("RAY_ID")
local captcha_provider_domain = "hcaptcha.com"
local captcha_map = Map.new("/etc/haproxy/ddos.map", Map._str);
function _M.setup_servers()
local backend_name = os.getenv("BACKEND_NAME")
local server_prefix = os.getenv("SERVER_PREFIX")
local hosts_map = Map.new("/etc/haproxy/hosts.map", Map._str);
local backends_map = Map.new("/etc/haproxy/backends.map", Map._str);
local handle = io.open("/etc/haproxy/hosts.map", "r")
local line = handle:read("*line")
local counter = 1
while line do
local hostname, backend_address = line:match("([^%s]+)%s+([^%s]+)")
core.set_map("/etc/haproxy/backends.map", hostname, "websrv"..counter)
local proxy = core.proxies[backend_name].servers[server_prefix..counter]
proxy:set_addr(backend_address)
proxy:set_ready()
line = handle:read("*line")
counter = counter + 1
end
handle:close()
end
-- main page template
local body_template = [[
<!DOCTYPE html>

1
src/scripts/register.lua
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@ -6,3 +6,4 @@ core.register_service("hcaptcha-view", "http", hcaptcha.view)
core.register_action("hcaptcha-check", { 'http-req', }, hcaptcha.check_captcha_status)
core.register_action("pow-check", { 'http-req', }, hcaptcha.check_pow_status)
core.register_action("decide-checks-necessary", { 'http-req', }, hcaptcha.decide_checks_necessary)
core.register_init(hcaptcha.setup_servers)