nominatim: clamp down on rate limits

[chef.git] / cookbooks / nominatim / templates / default / nginx.erb

diff --git a/cookbooks/nominatim/templates/default/nginx.erb b/cookbooks/nominatim/templates/default/nginx.erb
index 567562454ad68ebb028a631467030fe39bd81683..af7ea960b3cc3799e17d25593dc942dfcd1a7915 100644 (file)
--- a/cookbooks/nominatim/templates/default/nginx.erb
+++ b/cookbooks/nominatim/templates/default/nginx.erb
@@ -1,15 +1,11 @@
 upstream nominatim_service {
-<% if node[:nominatim][:api_flavour] == "php" %>
-  server unix:/run/php/php-nominatim.openstreetmap.org-fpm.sock fail_timeout=0;
-<% elsif node[:nominatim][:api_flavour] == "python"  %>
   server unix:/run/gunicorn-nominatim.openstreetmap.org.sock fail_timeout=0;
-<% end -%>
 }
 
 map $uri $nominatim_script_name {
-    ~^(.+?\.php)         $1;
-    ~^/([^/]+)           $1.php;
-    ^$                   search.php;
+    ~^/*(.+?)\.php        $1;
+    ~^/*([^/]+)           $1;
+    ^$                   search;
 }
 
 map $uri $nominatim_path_info {
@@ -67,9 +63,17 @@ geo $whitelisted {
     2620:52:3:1:5054:ff:fe0a:75a4 1; # gnome
     2620:52:3:1:5054:ff:fe0a:75a2 1; # gnome
     2620:52:3:1:5054:ff:fe0a:75aa 1; # gnome
+    34.234.151.67 1; # gnome - https://github.com/openstreetmap/operations/issues/1160
+    54.165.53.199 1; # gnome - https://github.com/openstreetmap/operations/issues/1160
+    35.153.15.118 1; # gnome - https://github.com/openstreetmap/operations/issues/1160
+}
+
+map $server_protocol$http_user_agent $cleaned_user_agent {
+    default $http_user_agent;
+    "~^HTTP/1..Mozilla/" Script$http_user_agent;
 }
 
-map $missing_email$missing_referer$http_user_agent $blocked_user_agent {
+map $missing_email$missing_referer$cleaned_user_agent $blocked_user_agent {
    default 0;
    "11" 2; # block any requests without identifier
    include <%= @confdir %>/nginx_blocked_user_agent.conf;
@@ -108,7 +112,7 @@ map $whitelisted$generic_mozilla$uri $limit_reverse {
     ~02/reverse.*  $binary_remote_addr;
 }
 
-limit_req_zone $limit_www zone=www:50m rate=2r/s;
+limit_req_zone $limit_www zone=www:50m rate=1r/s;
 limit_req_zone $limit_tarpit zone=tarpit:10m rate=1r/s;
 limit_req_zone $binary_remote_addr zone=blocked:10m rate=20r/m;
 limit_req_zone $limit_reverse zone=reverse:10m rate=10r/m;
@@ -182,58 +186,43 @@ server {
         add_header Access-Control-Allow-Origin "*" always;
     }
 
+    location ~* ^/(search|reverse)(\.php)?/ {
+        error_page 404 /404-old-search-syntax.html;
+        return 404;
+    }
+
     location @php {
+        if ($forward_to_ui) {
+            rewrite ^(/[^/]*) https://$host/ui$1.html redirect;
+        }
         if ($blocked_user_agent ~ ^2$)
         { return 403; }
         if ($blocked_referrer)
         { return 403; }
         if ($blocked_email)
         { return 403; }
+        if ($args ~* "q=[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+[ &]")
+        { return 418; }
         include <%= @confdir %>/nginx_blocked_generic.conf;
 
         limit_req zone=www burst=10;
         limit_req zone=tarpit burst=5;
         limit_req zone=reverse burst=5;
         limit_req_status 429;
-<% if node[:nominatim][:api_flavour] == "php" %>
-        fastcgi_pass nominatim_service;
-        include fastcgi_params;
-        fastcgi_param QUERY_STRING    $args;
-        fastcgi_param PATH_INFO       "$nominatim_path_info";
-        fastcgi_param SCRIPT_FILENAME  "<%= @directory %>/website/$nominatim_script_name";
-<% elsif node[:nominatim][:api_flavour] == "python" %>
+
+        if ($request_method = 'OPTIONS') {
+          add_header 'Content-Type' 'text/plain; charset=UTF-8';
+          add_header 'Content-Length' 0;
+          add_header Access-Control-Allow-Origin "*";
+          add_header Access-Control-Allow-Methods 'GET,OPTIONS';
+          add_header Access-Control-Allow-Headers $http_access_control_request_headers;
+          return 204;
+        }
+
         proxy_set_header Host $http_host;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_redirect off;
         proxy_pass http://nominatim_service;
-<% end -%>
-        if ($forward_to_ui) {
-            rewrite ^(/[^/]*) https://$host/ui$1.html redirect;
-        }
-    }
-
-<% if node[:nominatim][:api_flavour] == "php" %>
-    location ~* \.php$ {
-        if ($blocked_user_agent ~ ^2$)
-        { return 403; }
-        if ($blocked_referrer)
-        { return 403; }
-        if ($blocked_email)
-        { return 403; }
-        include <%= @confdir %>/nginx_blocked_generic.conf;
-
-        limit_req zone=www burst=10;
-        limit_req zone=tarpit burst=2;
-        limit_req zone=reverse burst=5;
-        limit_req_status 429;
-        fastcgi_pass    nominatim_service;
-        include         fastcgi_params;
-        fastcgi_param   SCRIPT_FILENAME    <%= @directory %>/website/$fastcgi_script_name;
-
-        if ($forward_to_ui) {
-            rewrite (.*).php https://$host/ui$1.html redirect;
-        }
     }
-<% end -%>
 }