nominatim: limit anonymous reverse requests to 10req/min

[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 ef0a2fdc8a215a0ea1f23df0e219c813116677f4..df689304c81c78945b8db3ce2ea9402459604c64 100644 (file)
--- a/cookbooks/nominatim/templates/default/nginx.erb
+++ b/cookbooks/nominatim/templates/default/nginx.erb
@@ -1,3 +1,7 @@
+upstream nominatim_service {
+  server 127.0.0.1:<%= @pools[:www][:port ]%>;
+}
+
 map $uri $nominatim_script_name {
     ~^(.+?\.php)         $1;
     ~^/([^/]+)           $1.php;
@@ -8,12 +12,37 @@ map $uri $nominatim_path_info {
     ~^/([^/]+)(.*)$      $2;
 }
 
+map $args $format {
+    default                  default;
+    ~(^|&)format=html(&|$)   html;
+    ~(^|&)format=            other;
+}
+
+map $uri/$format $forward_to_ui {
+    default               1;
+    ~^/ui                 0;
+    ~/other$              0;
+    ~/reverse.*/default   0;
+    ~/lookup.*/default    0;
+}
+
 map $query_string $email_id {
     ~(^|&)email=([^&]+)  $2;
 }
 
-upstream nominatim_service {
-  server 127.0.0.1:<%= @pools[:www][:port ]%>;
+map $email_id $missing_email {
+    default "";
+    "" 1;
+}
+
+map $http_user_agent $missing_ua {
+    default "";
+    "" 1;
+}
+
+map $http_referer $missing_referer {
+    default "";
+    "" 1;
 }
 
 # Whitelisted IPs
@@ -30,16 +59,22 @@ geo $whitelisted {
     8.43.85.23 1; # gnome
 }
 
-map $http_user_agent $blocked_user_agent {
+map $missing_email$missing_referer$http_user_agent $blocked_user_agent {
    default 0;
+   "11" 2; # block any requests without identifier
    include <%= @confdir %>/nginx_blocked_user_agent.conf;
 }
 
-map $http_referer $blocked_referrer {
+map $missing_email$missing_ua$http_referer $blocked_referrer {
    default 0;
    include <%= @confdir %>/nginx_blocked_referrer.conf;
 }
 
+map $missing_referer$missing_ua$email_id $blocked_email {
+   default 0;
+   include <%= @confdir %>/nginx_blocked_email.conf;
+}
+
 map $whitelisted $limit_www {
     1 "";
     0 $binary_remote_addr;
@@ -51,15 +86,31 @@ map $blocked_user_agent $limit_tarpit {
     2 $binary_remote_addr;
 }
 
+map $missing_email$missing_referer$http_user_agent $generic_mozilla {
+    default 0;
+    ~^11Mozilla/4.0 1;
+    ~^11Mozilla/5.0 2;
+}
+
+map $whitelisted$generic_mozilla$uri $limit_reverse {
+    default "";
+    ~01/reverse.*  $binary_remote_addr;
+    ~02/reverse.*  $binary_remote_addr;
+}
+
 limit_req_zone $limit_www zone=www:50m rate=2r/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;
 
 server {
-  listen 80 default_server;
-  listen [::]:80 default_server;
+    listen 80 default_server;
+    listen [::]:80 default_server;
 
-  location /nginx_status {
+    access_log <%= node[:nominatim][:logdir] %>/nominatim.openstreetmap.org-access.log combined;
+    error_log <%= node[:nominatim][:logdir] %>/nominatim.openstreetmap.org-error.log;
+
+    location /nginx_status {
         stub_status on;
         access_log   off;
         allow 127.0.0.1;
@@ -67,18 +118,18 @@ server {
         deny all;
     }
 
-   rewrite ^/\.well-known/acme-challenge/(.*)$ http://acme.openstreetmap.org/.well-known/acme-challenge/$1 permanent;
+     rewrite ^/\.well-known/acme-challenge/(.*)$ http://acme.openstreetmap.org/.well-known/acme-challenge/$1 permanent;
 
-   location / {
-       return 301 https://$host$request_uri;
-   }
+     location / {
+         return 301 https://$host$request_uri;
+     }
 }
 
 server {
     # IPv4
-    listen       443 ssl deferred backlog=16384 reuseport fastopen=2048 http2 default_server;
+    listen       443 ssl deferred backlog=16384 reuseport http2 default_server;
     # IPv6
-    listen       [::]:443 ssl deferred backlog=16384 reuseport fastopen=2048 http2 default_server;
+    listen       [::]:443 ssl deferred backlog=16384 reuseport http2 default_server;
     server_name  localhost;
 
     ssl_certificate /etc/ssl/certs/<%= node[:fqdn] %>.pem;
@@ -109,34 +160,56 @@ server {
     }
 
     location / {
-        set $anyid $http_referer$http_user_agent$email_id;
-        if ($anyid = "")
-        { return 403; }
+        try_files $uri $uri/ @php;
+    }
+
+    location /ui/ {
+        alias <%= @ui_directory %>/dist/;
+        index search.html;
+    }
+
+    location @php {
         if ($blocked_user_agent ~ ^2$)
         { return 403; }
         if ($blocked_referrer)
         { return 403; }
+        if ($blocked_email)
+        { return 403; }
+        include <%= @confdir %>/nginx_blocked_generic.conf;
 
-        try_files $uri $uri/ @php;
-    }
-
-    location @php {
         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 QUERY_STRING    $args;
         fastcgi_param PATH_INFO       "$nominatim_path_info";
         fastcgi_param SCRIPT_FILENAME  "$document_root/$nominatim_script_name";
+        if ($forward_to_ui) {
+            rewrite ^(/[^/]*) https://$host/ui$1.html redirect;
+        }
     }
 
     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    $document_root$fastcgi_script_name;
+
+        if ($forward_to_ui) {
+            rewrite (.*).php https://$host/ui$1.html redirect;
+        }
     }
 }