Merge pull request #1726 from SkynetLabs/expose-trustless-download-endpoint

expose /skynet/trustless/basesector

docker/nginx/conf.d/server/server.api

@@ -348,6 +348,43 @@ location ~ "^/file/(([a-zA-Z0-9-_]{46}|[a-z0-9]{55})(/.*)?)$" {
     include /etc/nginx/conf.d/include/location-skylink;
 }
 
+location /skynet/trustless/basesector {
+    include /etc/nginx/conf.d/include/cors;
+    include /etc/nginx/conf.d/include/proxy-buffer;
+    include /etc/nginx/conf.d/include/track-download;
+
+    limit_conn downloads_by_ip 100; # ddos protection: max 100 downloads at a time
+
+    # default download rate to unlimited
+    set $limit_rate 0;
+
+    access_by_lua_block {
+        if require("skynet.account").accounts_enabled() then
+            -- check if portal is in authenticated only mode
+            if require("skynet.account").is_access_unauthorized() then
+                return require("skynet.account").exit_access_unauthorized()
+            end
+
+            -- check if portal is in subscription only mode
+            if require("skynet.account").is_access_forbidden() then
+                return require("skynet.account").exit_access_forbidden()
+            end
+
+            -- get account limits of currently authenticated user
+            local limits = require("skynet.account").get_account_limits()
+
+            -- apply download speed limit
+            ngx.var.limit_rate = limits.download
+        end
+    }
+
+    limit_rate_after 512k;
+    limit_rate $limit_rate;
+
+    proxy_set_header User-Agent: Sia-Agent;
+    proxy_pass http://sia:9980;
+}
+
 location /__internal/do/not/use/accounts {
     include /etc/nginx/conf.d/include/cors;