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skynet-webportal/docker/nginx/conf.d/client.conf

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proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=skynet:10m max_size=10g inactive=24h use_temp_path=off;
# ratelimit specified IPs
geo $limit {
default 0;
include /etc/nginx/conf.d/include/ratelimited;
}
map $limit $limit_key {
0 "";
1 $binary_remote_addr;
}
limit_req_zone $binary_remote_addr zone=uploads_by_ip:10m rate=10r/s;
limit_req_zone $limit_key zone=uploads_by_ip_throttled:10m rate=10r/m;
limit_req_zone $binary_remote_addr zone=registry_access_by_ip:10m rate=60r/m;
limit_req_zone $limit_key zone=registry_access_by_ip_throttled:10m rate=20r/m;
limit_conn_zone $binary_remote_addr zone=upload_conn:10m;
limit_conn_zone $limit_key zone=upload_conn_rl:10m;
limit_conn_zone $binary_remote_addr zone=downloads_by_ip:10m;
limit_req_status 429;
limit_conn_status 429;
# since we are proxying request to nginx from caddy, access logs will contain caddy's ip address
# as the request address so we need to use real_ip_header module to use ip address from
# X-Forwarded-For header as a real ip address of the request
set_real_ip_from 10.0.0.0/8;
set_real_ip_from 127.0.0.1/32;
set_real_ip_from 172.16.0.0/12;
set_real_ip_from 192.168.0.0/16;
real_ip_header X-Forwarded-For;
upstream siad {
server sia:9980;
}
server {
listen 80 default_server;
listen [::]:80 default_server;
# understand the regex https://regex101.com/r/BGQvi6/6
server_name "~^(((?<base32_subdomain>([a-z0-9]{55}))|(?<hns_domain>[^\.]+)\.hns)\.)?((?<portal_domain>[^.]+)\.)?(?<domain>[^.]+)\.(?<tld>[^.]+)$";
# ddos protection: closing slow connections
client_body_timeout 5s;
client_header_timeout 5s;
# Increase the body buffer size, to ensure the internal POSTs can always
# parse the full POST contents into memory.
client_body_buffer_size 128k;
client_max_body_size 128k;
# legacy endpoint rewrite
rewrite ^/portals /skynet/portals permanent;
rewrite ^/stats /skynet/stats permanent;
rewrite ^/skynet/blacklist /skynet/blocklist permanent;
location / {
# This is only safe workaround to reroute based on some conditions
# See https://www.nginx.com/resources/wiki/start/topics/depth/ifisevil/
recursive_error_pages on;
# redirect links with base32 encoded skylink in subdomain
error_page 460 = @base32_subdomain;
if ($base32_subdomain != "") {
return 460;
}
# redirect links with handshake domain on hns subdomain
error_page 461 = @hns_domain;
if ($hns_domain != "") {
return 461;
}
include /etc/nginx/conf.d/include/cors;
root /var/www/webportal;
}
location /docs {
proxy_pass https://nebulouslabs.github.io/skynet-docs;
}
location /skynet/blocklist {
include /etc/nginx/conf.d/include/cors;
proxy_cache skynet;
proxy_cache_valid any 1m; # cache blocklist for 1 minute
proxy_set_header User-Agent: Sia-Agent;
proxy_pass http://siad/skynet/blocklist;
}
location /skynet/portals {
include /etc/nginx/conf.d/include/cors;
proxy_cache skynet;
proxy_cache_valid any 1m; # cache portals for 1 minute
proxy_set_header User-Agent: Sia-Agent;
proxy_pass http://siad/skynet/portals;
}
location /skynet/stats {
include /etc/nginx/conf.d/include/cors;
set $response_body ''; # we need a variable for full response body (not chuncked)
# modify the response to add numfiles and totalsize to account for node rotation
# example prevstats.lua: 'return { numfiles = 12345, totalsize = 123456789 }'
body_filter_by_lua_block {
local file_exists = io.open("/data/nginx/skynet/prevstats.lua")
if file_exists then
file_exists.close()
-- because response data is chunked, we need to concat ngx.arg[1] until
-- last chunk is received (when ngx.arg[2] is set to true)
ngx.var.response_body = ngx.var.response_body .. ngx.arg[1]
if ngx.arg[2] then
local json = require('cjson')
local prevstats = require('/data/nginx/skynet/prevstats')
local stats = json.decode(ngx.var.response_body)
stats.uploadstats.numfiles = stats.uploadstats.numfiles + prevstats.numfiles
stats.uploadstats.totalsize = stats.uploadstats.totalsize + prevstats.totalsize
ngx.arg[1] = json.encode(stats)
else
-- do not send any data in this chunk (wait for last chunk)
ngx.arg[1] = nil
end
end
}
proxy_cache skynet;
proxy_cache_valid any 10m; # cache stats for 10 minutes
proxy_set_header User-Agent: Sia-Agent;
proxy_read_timeout 5m; # extend the read timeout
proxy_pass http://siad/skynet/stats;
}
location /health-check {
include /etc/nginx/conf.d/include/cors;
access_log off; # do not log traffic to health-check endpoint
proxy_pass http://health-check:3100;
}
location /hns {
include /etc/nginx/conf.d/include/proxy-buffer;
# variable definititions - we need to define a variable to be able to access it in lua by ngx.var.something
set $skylink ''; # placeholder for the raw 46 bit skylink
set $rest ''; # placeholder for the rest of the url that gets appended to skylink (path and args)
# resolve handshake domain by requesting to /hnsres endpoint and assign correct values to $skylink and $rest
access_by_lua_block {
local json = require('cjson')
-- match the request_uri and extract the hns domain and anything that is passed in the uri after it
-- example: /hns/something/foo/bar?baz=1 matches:
-- > hns_domain_name: something
-- > request_uri_rest: /foo/bar/?baz=1
local hns_domain_name, request_uri_rest = string.match(ngx.var.request_uri, "/hns/([^/?]+)(.*)")
-- make a get request to /hnsres endpoint with the domain name from request_uri
local hnsres_res = ngx.location.capture("/hnsres/" .. hns_domain_name)
-- we want to fail with a generic 404 when /hnsres returns anything but 200 OK with a skylink
if hnsres_res.status ~= ngx.HTTP_OK then
ngx.exit(ngx.HTTP_NOT_FOUND)
end
-- since /hnsres endpoint response is a json, we need to decode it before we access it
-- example response: '{"skylink":"sia://XABvi7JtJbQSMAcDwnUnmp2FKDPjg8_tTTFP4BwMSxVdEg"}'
local hnsres_json = json.decode(hnsres_res.body)
-- define local variable containing rest of the skylink if provided
local skylink_rest
if hnsres_json.skylink then
-- try to match the skylink with sia:// prefix
skylink, skylink_rest = string.match(hnsres_json.skylink, "sia://([^/?]+)(.*)")
-- in case the skylink did not match, assume that there is no sia:// prefix and try to match again
if skylink == nil then
skylink, skylink_rest = string.match(hnsres_json.skylink, "/?([^/?]+)(.*)")
end
elseif hnsres_json.registry then
local publickey = hnsres_json.registry.publickey
local datakey = hnsres_json.registry.datakey
-- make a get request to /skynet/registry endpoint with the credentials from text record
local registry_res = ngx.location.capture("/skynet/registry/cached?publickey=" .. publickey .. "&datakey=" .. datakey)
-- we want to fail with a generic 404 when /skynet/registry returns anything but 200 OK
if registry_res.status ~= ngx.HTTP_OK then
ngx.exit(ngx.HTTP_NOT_FOUND)
end
-- since /skynet/registry endpoint response is a json, we need to decode it before we access it
local registry_json = json.decode(registry_res.body)
-- response will contain a hex encoded skylink, we need to decode it
local data = (registry_json.data:gsub('..', function (cc)
return string.char(tonumber(cc, 16))
end))
skylink = data
end
-- fail with a generic 404 if skylink has not been extracted from a valid /hnsres response for some reason
if not skylink then
ngx.exit(ngx.HTTP_NOT_FOUND)
end
ngx.var.skylink = skylink
if request_uri_rest == "/" and skylink_rest ~= nil and skylink_rest ~= "" and skylink_rest ~= "/" then
ngx.var.rest = skylink_rest
else
ngx.var.rest = request_uri_rest
end
}
# overwrite the Cache-Control header to only cache for 60s in case the domain gets updated
more_set_headers 'Cache-Control: public, max-age=60';
# we proxy to another nginx location rather than directly to siad because we don't want to deal with caching here
proxy_pass http://127.0.0.1/$skylink$rest;
# in case siad returns location header, we need to replace the skylink with the domain name
header_filter_by_lua_block {
if ngx.header.location then
-- match hns domain from the request_uri
local hns_domain_name = string.match(ngx.var.request_uri, "/hns/([^/?]+)")
-- match location redirect part after the skylink
local location_rest = string.match(ngx.header.location, "[^/?]+(.*)");
-- because siad will set the location header to ie. XABvi7JtJbQSMAcDwnUnmp2FKDPjg8_tTTFP4BwMSxVdEg/index.html
-- we need to replace the skylink with the domain_name so we are not redirected to skylink
ngx.header.location = hns_domain_name .. location_rest
end
}
}
location /hnsres {
include /etc/nginx/conf.d/include/cors;
proxy_pass http://handshake-api:3100;
}
# internal registry endpoint that caches calls for a certain period of time
# it is not suitable for every registry call but some requests might be cached
# and we are using it currently for caching registry resolutions from /hns calls
location /skynet/registry/cached {
internal; # internal endpoint only
access_log off; # do not log traffic
proxy_cache skynet;
proxy_cache_key publickey=$arg_publickey&datakey=$arg_datakey; # cache based on publickey and datakey
proxy_cache_valid 200 30s; # cache only 200 responses and only for 30 seconds
proxy_cache_lock on; # queue cache requests for the same resource until it is fully cached
proxy_cache_bypass $cookie_nocache $arg_nocache; # add cache bypass option
proxy_pass http://127.0.0.1/skynet/registry$is_args$args;
}
location /skynet/registry {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/sia-auth;
limit_req zone=registry_access_by_ip burst=600 nodelay;
limit_req zone=registry_access_by_ip_throttled burst=200 nodelay;
proxy_set_header User-Agent: Sia-Agent;
proxy_read_timeout 600; # siad should timeout with 404 after 5 minutes
proxy_pass http://siad/skynet/registry;
}
location /skynet/skyfile {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/sia-auth;
limit_req zone=uploads_by_ip burst=100 nodelay;
limit_req zone=uploads_by_ip_throttled;
limit_conn upload_conn 10;
limit_conn upload_conn_rl 1;
client_max_body_size 1000M; # make sure to limit the size of upload to a sane value
proxy_read_timeout 600;
proxy_request_buffering off; # stream uploaded files through the proxy as it comes in
proxy_set_header Expect $http_expect;
proxy_set_header User-Agent: Sia-Agent;
# Extract 2 sets of 2 characters from $request_id and assign to $dir1, $dir2
# respectfully. The rest of the $request_id is going to be assigned to $dir3.
# We use those variables to automatically generate a unique path for the uploaded file.
# This ensures that not all uploaded files end up in the same directory, which is something
# that causes performance issues in the renter.
# Example path result: /af/24/9bc5ec894920ccc45634dc9a8065
if ($request_id ~* "(\w{2})(\w{2})(\w+)") {
set $dir1 $1;
set $dir2 $2;
set $dir3 $3;
}
# proxy this call to siad endpoint (make sure the ip is correct)
proxy_pass http://siad/skynet/skyfile/$dir1/$dir2/$dir3$is_args$args;
}
location ~ "^/(([a-zA-Z0-9-_]{46}|[a-z0-9]{55})(/.*)?)$" {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/proxy-buffer;
include /etc/nginx/conf.d/include/proxy-cache-downloads;
# redirect purge calls to separate location
error_page 462 = @purge;
if ($request_method = PURGE) {
return 462;
}
limit_conn downloads_by_ip 100; # ddos protection: max 100 downloads at a time
add_header Cache-Control "public, max-age=86400"; # allow consumer to cache response
# we need to explicitly use set directive here because $1 will contain the skylink with
# decoded whitespaces and set will re-encode it for us before passing it to proxy_pass
set $skylink $1;
proxy_read_timeout 600;
proxy_set_header User-Agent: Sia-Agent;
# proxy this call to siad /skynet/skylink/ endpoint (make sure the ip is correct)
proxy_pass http://siad/skynet/skylink/$skylink$is_args$args;
}
location @base32_subdomain {
include /etc/nginx/conf.d/include/proxy-buffer;
proxy_pass http://127.0.0.1/$base32_subdomain/$request_uri;
}
location @hns_domain {
include /etc/nginx/conf.d/include/proxy-buffer;
proxy_pass http://127.0.0.1/hns/$hns_domain/$request_uri;
}
location @purge {
allow 10.0.0.0/8;
allow 127.0.0.1/32;
allow 172.16.0.0/12;
allow 192.168.0.0/16;
deny all;
set $lua_purge_path "/data/nginx/cache/";
content_by_lua_file /etc/nginx/conf.d/scripts/purge-multi.lua;
}
location ~ "^/file/([a-zA-Z0-9-_]{46}(/.*)?)$" {
include /etc/nginx/conf.d/include/proxy-buffer;
rewrite /file/(.*) $1 break; # drop the /file/ prefix from uri
proxy_pass http://127.0.0.1/$uri?attachment=true&$args;
}
# include custom locations, specific to the server
include /etc/nginx/conf.d/server-override/*;
}