Cavemanon/haproxy-protection
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Fix BANing

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This commit is contained in:
Thomas Lynch
2024-11-13 21:25:58 +11:00
parent f2ad095874
commit d0b21d4ce1
1 changed files with 19 additions and 1 deletions
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20
varnish/default.vcl
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@ -28,7 +28,8 @@ sub vcl_recv {
if (req.method == "PURGE") {
return (purge);
} else if (req.method == "BAN") {
return (ban);
ban("obj.http.x-url ~ " + req.url + " && obj.http.x-host == " + req.http.host);
return (synth(200, "Ban added"));
}
} else {
return (synth(405, "Not allowed"));
@ -54,14 +55,21 @@ sub vcl_recv {
set req.http.X-Cookie-Temp = req.http.Cookie;
unset req.http.Cookie; # remove Cookie header for caching purposes
}
}
# caching behavior when fetching from backend
sub vcl_backend_response {
# for BANs
set beresp.http.x-url = bereq.url;
set beresp.http.x-host = bereq.http.host;
if (beresp.http.Set-Cookie) {
set beresp.uncacheable = true;
return (pass);
}
# only cache specific types of content and successful responses
if ((beresp.status == 200 || beresp.status == 206) && beresp.http.Content-Type ~ "text|application|image|video|audio|font") {
if (beresp.http.Cache-Control ~ "no-cache" || beresp.http.Cache-Control ~ "no-store" || beresp.http.Pragma == "no-cache") {
@ -94,10 +102,17 @@ sub vcl_backend_response {
if (!beresp.uncacheable) {
unset beresp.http.Set-Cookie;
}
}
# when sending response
sub vcl_deliver {
# for BANs
unset resp.http.x-url;
unset resp.http.x-host;
# remove some headers
unset resp.http.X-Varnish;
unset resp.http.Via;
unset req.http.X-Cookie-Temp; # ensure X-Cookie-Temp is gone
@ -108,12 +123,15 @@ sub vcl_deliver {
} else {
set resp.http.X-Cache = "MISS";
}
}
# restore Cookie header to backend if saved
sub vcl_backend_fetch {
if (bereq.http.X-Cookie-Temp) {
set bereq.http.Cookie = bereq.http.X-Cookie-Temp;
unset bereq.http.X-Cookie-Temp; # remove X-Cookie-Temp after use
}
}