Cavemanon/haproxy-protection
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improved, now handles domain OR path protection with 0, 1, 2 setting for none, pow, captcha

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global override does POW only (for now --or can be easily changed for captcha+pow) until i make that customisable level too
no more confusing inverted map
use maps correctly as k:v
cleaned up some stuff
added comments
This commit is contained in:
Thomas Lynch
2021-12-04 21:42:27 +11:00
parent e6ed817746
commit 6f52ee8977
9 changed files with 70 additions and 87 deletions
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32
haproxy/haproxy.cfg
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@@ -4,6 +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
defaults
mode http
@@ -14,29 +15,34 @@ defaults
frontend http-in
bind *:80
acl ddos_mode_enabled hdr_cnt(xr3la1rfFc) eq 0
acl ddos_mode_enabled hdr(host) -i -f /etc/haproxy/ddos.map
# you can repeat this acl (which ORs them) to add more conditions where ddos_mode_enabled
acl is_existing_vhost hdr(host),lower,map_str(/etc/haproxy/hosts.map) -m found
http-request silent-drop unless is_existing_vhost
# check captcha cookie
# 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
acl ddos_mode_enabled base,map(/etc/haproxy/ddos.map) -m bool
# create acl for bools updated by lua
acl captcha_passed var(txn.captcha_passed) -m bool
acl captcha_passed hdr(host),map_str(/etc/haproxy/no_captcha.map) -m found
# check proof of work cookie
acl pow_passed var(txn.pow_passed) -m bool
acl validate_captcha var(txn.validate_captcha) -m bool
acl validate_pow var(txn.validate_pow) -m bool
# exclude favicon, and serve script files directly in haproxy
acl on_captcha_url path -m beg /bot-check
acl is_favicon path /favicon.ico
# define excluded paths, and serve script files directly in haproxy
acl is_excluded path /favicon.ico
acl is_sha1_js path /js/sha1.js
acl is_worker_js path /js/worker.js
http-request return file /var/www/js/sha1.js status 200 content-type "application/javascript; charset=utf-8" hdr "cache-control" "public, max-age=300" if is_sha1_js
http-request return file /var/www/js/worker.js status 200 content-type "application/javascript; charset=utf-8" hdr "cache-control" "public, max-age=300" if is_worker_js
# check pow/captcha and show page if necessary
http-request use-service lua.hcaptcha-view if on_captcha_url !is_favicon
http-request lua.hcaptcha-check if !is_favicon !on_captcha_url ddos_mode_enabled
http-request lua.pow-check if !is_favicon !on_captcha_url ddos_mode_enabled
http-request redirect location /bot-check?%[capture.req.uri] code 302 if !captcha_passed !on_captcha_url ddos_mode_enabled !is_favicon OR !pow_passed !on_captcha_url ddos_mode_enabled !is_favicon
acl on_captcha_url path /bot-check
http-request use-service lua.hcaptcha-view if on_captcha_url !is_excluded
http-request lua.decide-checks-necessary if !is_excluded !on_captcha_url ddos_mode_enabled #OR !is_excluded !on_captcha_url ddos_mode_enabled_override
http-request lua.hcaptcha-check if !is_excluded !on_captcha_url validate_captcha #OR !is_excluded !on_captcha_url ddos_mode_enabled_override
http-request lua.pow-check if !is_excluded !on_captcha_url validate_pow OR !is_excluded !on_captcha_url ddos_mode_enabled_override
http-request redirect location /bot-check?%[capture.req.uri] code 302 if validate_captcha !captcha_passed !on_captcha_url ddos_mode_enabled !is_excluded OR validate_pow !pow_passed !on_captcha_url ddos_mode_enabled !is_excluded OR !pow_passed ddos_mode_enabled_override !on_captcha_url !is_excluded
default_backend servers