-# DO NOT EDIT - This file is being maintained by Chef
-
-upstream tile_cache_backend {
- server 127.0.0.1;
-
- # Add the other caches to relieve pressure if local squid failing
- # Balancer: round-robin
-<% @caches.each do |cache| -%>
-<% if cache[:hostname] != node[:hostname] -%>
-<% if node[:tilecache][:tile_siblings].include? cache[:fqdn] -%>
-<% cache.ipaddresses(:family => :inet, :role => :external).sort.each do |address| -%>
- server <%= address %> backup; # Server <%= cache[:hostname] %>
-<% end -%>
-<% end -%>
-<% end -%>
-<% end -%>
-
- keepalive 256;
-}
-
-# Geo Map of tile caches
-geo $tile_cache {
- default 0;
-<% @caches.each do |cache| -%>
-<% cache.ipaddresses(:family => :inet, :role => :external).sort.each do |address| -%>
- <%= address %> 1; # <%= cache[:hostname] %>
-<% end -%>
-<% end -%>
-}
-
-# Rates table based on current cookie value
-map $cookie_qos_token $limit_rate_qos {
- include /etc/nginx/conf.d/tile_qos_rates.map;
-}
-
-# Set-Cookie table based on current cookie value
-map $cookie_qos_token $cookie_qos_token_set {
- include /etc/nginx/conf.d/tile_qos_cookies.map;
-}
-
-map $http_user_agent $approved_scraper {
- default 0; # Not approved
- '~^JOSM\/' 1; # JOSM
- '~^Mozilla\/5\.0\ QGIS\/' 1; # QGIS
-}
-
-map $http_user_agent $denied_scraper {
- default 0; # Not denied
- '' 1; # No User-Agent Set
- '~^Python\-urllib\/' 1; # Library Default
- '~^python\-requests\/' 1; # Library Default
- '~^node\-fetch\/' 1; # Library Default
- '~^R$' 1; # Library Default
- '~^Java\/' 1; # Library Default
- '~^tiles$' 1; # Library Default
- '~^Dalvik\/' 1; # Library Default
- '~^runtastic' 1; # App
- 'Mozilla/4.0' 1; # Fake
- 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)' 1; # Fake
-}
-
-map $http_referer $denied_referer {
- default 0; # Not denied
- 'http://www.openstreetmap.org/' 1; # Faked
- 'http://www.openstreetmap.org' 1; # Faked
- 'http://openstreetmap.org/' 1; # Faked
- 'http://openstreetmap.org' 1; # Faked
- 'http://www.osm.org/' 1; # Faked
- 'http://www.osm.org' 1; # Faked
- 'http://osm.org/' 1; # Faked
- 'http://osm.org' 1; # Faked
-}
-
-# Limit Cache-Control header to only approved User-Agents
-map $http_user_agent $limit_http_cache_control {
- default ''; # Unset Header
- '~^Mozilla\/5\.0\ QGIS\/' ''; # Unset Header
- '~^Mozilla\/5\.0\ ' $http_cache_control; # Pass Header
-}
-
-# Limit Pragma header to only approved User-Agents
-map $http_user_agent $limit_http_pragma {
- default ''; # Unset Header
- '~^Mozilla\/5\.0\ QGIS\/' ''; # Unset Header
- '~^Mozilla\/5\.0\ ' $http_pragma; # Pass Header
-}
-
-server {
- listen 443 ssl fastopen=2048 http2 default_server;
- server_name localhost;
-
- proxy_buffers 8 64k;
-
- ssl_certificate /etc/ssl/certs/tile.openstreetmap.org.pem;
- ssl_certificate_key /etc/ssl/private/tile.openstreetmap.org.key;
-
- location / {
- proxy_pass http://tile_cache_backend;
- proxy_set_header X-Forwarded-For $remote_addr;
- proxy_http_version 1.1;
- proxy_set_header Connection '';
-
- proxy_connect_timeout 5s;
-
- # Preserve host header.
- proxy_set_header Host $host;
- # Do not pass cookies to backends.
- proxy_set_header Cookie '';
- # Do not pass Accept-Encoding to backends.
- proxy_set_header Accept-Encoding '';
-
- # Do not allow setting cookies from backends due to caching.
- proxy_ignore_headers Set-Cookie;
- proxy_hide_header Set-Cookie;
-
- # Set a QoS cookie if none presented (uses nginx Map)
- add_header Set-Cookie $cookie_qos_token_set;
-<% if node[:ssl][:strict_transport_security] -%>
- # Ensure Strict-Transport-Security header is removed from proxied server responses
- proxy_hide_header Strict-Transport-Security;
-
- # Enable HSTS
- add_header Strict-Transport-Security "<%= node[:ssl][:strict_transport_security] %>" always;
-<% end -%>
-
- # QoS Traffic Rate see $limit_rate on http://nginx.org/en/docs/http/ngx_http_core_module.html
- set $limit_rate $limit_rate_qos;
-
- # Allow Higher Traffic Rate from Approved User-Agents which do not support cookies (uses nginx Map)
- if ($approved_scraper) {
- set $limit_rate 65536;
- }
-
- if ($denied_scraper) {
- set $limit_rate 512;
- return 429;
- }
- if ($denied_referer) {
- set $limit_rate 512;
- return 418;
- }
-
- # Strip any ?query parameters from urls
- set $args '';
-
- # Allow cache purging headers only from select User-Agents (uses nginx Map)
- proxy_set_header Cache-Control $limit_http_cache_control;
- proxy_set_header Pragma $limit_http_pragma;
- }
-}