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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;
# this runs before forking out nginx worker processes
init_by_lua_block {
require "cjson"
require "socket.http"
}
# 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;
# skynet-jwt contains dash so we cannot use $cookie_skynet-jwt
# https://richardhart.me/2012/03/18/logging-nginx-cookies-with-dashes/
map $http_cookie $skynet_jwt {
default '';
~skynet-jwt=(?<match>[^\;]+) $match;
}
upstream siad {
server sia:9980;
}
server {
listen 80 default_server;
listen [::]:80 default_server;
# understand the regex https://regex101.com/r/BGQvi6/6
server_name "~^(((?<base32_subdomain>([a-z0-9]{55}))|(?<hns_domain>[^\.]+)\.hns)\.)?((?<portal_domain>[^.]+)\.)?(?<domain>[^.]+)\.(?<tld>[^.]+)$";
# 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;
rewrite ^/account/(.*) https://account.$domain.$tld/$1 permanent;
# This is only safe workaround to reroute based on some conditions
# See https://www.nginx.com/resources/wiki/start/topics/depth/ifisevil/
recursive_error_pages on;
# redirect links with base32 encoded skylink in subdomain
error_page 460 = @base32_subdomain;
if ($base32_subdomain != "") {
return 460;
}
# redirect links with handshake domain on hns subdomain
error_page 461 = @hns_domain;
if ($hns_domain != "") {
return 461;
}
# redirect to dnslookup endpoint
error_page 462 = @dnslink_lookup;
if ($http_dnslink_lookup) {
return 462;
}
location / {
include /etc/nginx/conf.d/include/cors;
proxy_pass http://website:9000;
}
location /docs {
proxy_pass https://skynetlabs.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;
proxy_cache skynet;
proxy_cache_valid any 1m; # cache stats for 1 minute
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://10.10.10.60:3100; # hardcoded ip because health-check waits for nginx
}
location /hns {
include /etc/nginx/conf.d/include/proxy-buffer;
include /etc/nginx/conf.d/include/proxy-pass-internal;
# 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
}
# 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 {
include /etc/nginx/conf.d/include/location-skynet-registry;
internal; # internal endpoint only
proxy_cache skynet;
proxy_cache_key $args; # cache based on publickey and datakey args
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
}
location /skynet/registry {
include /etc/nginx/conf.d/include/location-skynet-registry;
}
location /skynet/skyfile {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/sia-auth;
include /etc/nginx/conf.d/include/track-upload;
include /etc/nginx/conf.d/include/generate-siapath;
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
# increase request timeouts
proxy_read_timeout 600;
proxy_send_timeout 600;
proxy_request_buffering off; # stream uploaded files through the proxy as it comes in
proxy_set_header Expect $http_expect;
proxy_set_header User-Agent: Sia-Agent;
# access_by_lua_block {
# -- this block runs only when accounts are enabled
# if os.getenv("ACCOUNTS_ENABLED") ~= "true" then return end
# ngx.var.upload_limit_rate = 5 * 1024 * 1024
# local res = ngx.location.capture("/accounts/user", { copy_all_vars = true })
# if res.status == ngx.HTTP_OK then
# local json = require('cjson')
# local user = json.decode(res.body)
# ngx.var.upload_limit_rate = ngx.var.upload_limit_rate * (user.tier + 1)
# end
# }
# proxy this call to siad endpoint (make sure the ip is correct)
proxy_pass http://siad/skynet/skyfile/$dir1/$dir2/$dir3$is_args$args;
}
# endpoing implementing resumable file uploads open protocol https://tus.io
location /skynet/tus {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/track-upload;
# TUS chunks size is 40M + leaving 10M of breathing room
client_max_body_size 50M;
# Those timeouts need to be elevated since skyd can stall reading
# data for a while when overloaded which would terminate connection
client_body_timeout 1h;
proxy_send_timeout 1h;
# Add X-Forwarded-* headers
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Proto $scheme;
# rewrite proxy request to use correct host uri from env variable (required to return correct location header)
set_by_lua $SKYNET_SERVER_API 'return os.getenv("SKYNET_SERVER_API")';
proxy_redirect $scheme://$host $SKYNET_SERVER_API;
# proxy /skynet/tus requests to siad endpoint with all arguments
proxy_pass http://siad;
# set max upload size dynamically based on account limits
rewrite_by_lua_block {
-- set default limit value to 1 GB
ngx.req.set_header("SkynetMaxUploadSize", 1073741824)
-- this block runs only when accounts are enabled
if os.getenv("ACCOUNTS_ENABLED") ~= "true" then return end
-- fetch account limits and set max upload size accordingly
local res = ngx.location.capture("/accounts/user/limits", { copy_all_vars = true })
if res.status == ngx.HTTP_OK then
local json = require('cjson')
local limits = json.decode(res.body)
ngx.req.set_header("SkynetMaxUploadSize", limits.maxUploadSize)
end
}
# extract skylink from base64 encoded upload metadata and assign to a proper header
header_filter_by_lua_block {
if ngx.header["Upload-Metadata"] then
local encodedSkylink = string.match(ngx.header["Upload-Metadata"], "Skylink ([^,?]+)")
if encodedSkylink then
ngx.header["Skynet-Skylink"] = ngx.decode_base64(encodedSkylink)
end
end
}
}
location /skynet/pin {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/sia-auth;
include /etc/nginx/conf.d/include/track-upload;
include /etc/nginx/conf.d/include/generate-siapath;
proxy_set_header User-Agent: Sia-Agent;
proxy_pass http://siad$uri?siapath=$dir1/$dir2/$dir3&$args;
}
location /skynet/metadata {
include /etc/nginx/conf.d/include/cors;
proxy_set_header User-Agent: Sia-Agent;
proxy_pass http://siad;
}
location /skynet/resolve {
include /etc/nginx/conf.d/include/cors;
proxy_set_header User-Agent: Sia-Agent;
proxy_pass http://siad;
}
location ~ "^/(([a-zA-Z0-9-_]{46}|[a-z0-9]{55})(/.*)?)$" {
include /etc/nginx/conf.d/include/cors;
include /etc/nginx/conf.d/include/proxy-buffer;
include /etc/nginx/conf.d/include/proxy-cache-downloads;
include /etc/nginx/conf.d/include/track-download;
# redirect purge calls to separate location
error_page 462 = @purge;
if ($request_method = PURGE) {
return 462;
}
limit_conn downloads_by_ip 100; # ddos protection: max 100 downloads at a time
# we need to explicitly use set directive here because $2 and $3 will contain values with
# decoded whitespaces and set will re-encode it for us before passing it to proxy_pass
set $skylink $2;
set $path $3;
# $skylink_v1 and $skylink_v2 variables default to the same value but in case the requested skylink was:
# a) skylink v1 - it wouldn't matter, no additional logic is executed
# b) skylink v2 - in a lua block below we will resolve the skylink v2 into skylink v1 and update
# $skylink_v1 variable so then the proxy request to skyd can be cached in nginx (proxy_cache_key
# in proxy-cache-downloads includes $skylink_v1 as a part of the cache key)
set $skylink_v1 $skylink;
set $skylink_v2 $skylink;
# variable for Skynet-Proof header that we need to inject
# into a response if the request was for skylink v2
set $skynet_proof '';
access_by_lua_block {
-- detect whether requested skylink is v2
local isBase32v2 = string.len(ngx.var.skylink) == 55 and string.sub(ngx.var.skylink, 0, 2) == "04"
local isBase64v2 = string.len(ngx.var.skylink) == 46 and string.sub(ngx.var.skylink, 0, 2) == "AQ"
if isBase32v2 or isBase64v2 then
local res = ngx.location.capture("/skynet/resolve/" .. ngx.var.skylink_v2)
if res.status == ngx.HTTP_OK then
local json = require('cjson')
local resolve = json.decode(res.body)
ngx.var.skylink_v1 = resolve.skylink
ngx.var.skynet_proof = res.header["Skynet-Proof"]
end
end
-- this block runs only when accounts are enabled
if os.getenv("ACCOUNTS_ENABLED") ~= "true" then return end
local res = ngx.location.capture("/accounts/user/limits", { copy_all_vars = true })
if res.status == ngx.HTTP_OK then
local json = require('cjson')
local limits = json.decode(res.body)
ngx.var.limit_rate = limits.download
end
}
header_filter_by_lua_block {
-- not empty skynet_proof means this is a skylink v2 request
-- so we should replace the Skynet-Proof header with the one
-- we got from /skynet/resolve/ endpoint, otherwise we would
-- be serving cached empty v1 skylink Skynet-Proof header
if ngx.var.skynet_proof then
ngx.header["Skynet-Proof"] = ngx.var.skynet_proof
end
}
proxy_read_timeout 600;
proxy_set_header User-Agent: Sia-Agent;
proxy_pass http://siad/skynet/skylink/$skylink_v1$path$is_args$args;
}
location @dnslink_lookup {
include /etc/nginx/conf.d/include/proxy-buffer;
include /etc/nginx/conf.d/include/proxy-pass-internal;
set $dnslink '';
rewrite_by_lua_block {
local http = require("socket.http")
local ok, statusCode, headers, statusText = http.request {
url = "http://dnslink-api:3100/dnslink/" .. ngx.var.host
}
if statusCode == ngx.HTTP_OK then
ngx.var.dnslink = headers["skynet-skylink"]
else
ngx.status = statusCode
ngx.header["content-type"] = "text/plain"
ngx.say(headers["dnslink-error"])
ngx.exit(statusCode)
end
}
proxy_set_header Dnslink-Lookup "";
proxy_pass http://127.0.0.1/$dnslink$request_uri;
}
location @base32_subdomain {
include /etc/nginx/conf.d/include/proxy-buffer;
include /etc/nginx/conf.d/include/proxy-pass-internal;
proxy_pass http://127.0.0.1/$base32_subdomain$request_uri;
}
location @hns_domain {
include /etc/nginx/conf.d/include/proxy-buffer;
include /etc/nginx/conf.d/include/proxy-pass-internal;
proxy_pass http://127.0.0.1/hns/$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;
include /etc/nginx/conf.d/include/proxy-pass-internal;
rewrite /file/(.*) $1 break; # drop the /file/ prefix from uri
proxy_pass http://127.0.0.1/$uri?attachment=true&$args;
}
location /__internal/do/not/use/authenticated {
include /etc/nginx/conf.d/include/cors;
charset utf-8;
charset_types application/json;
default_type application/json;
content_by_lua_block {
local json = require('cjson')
-- this block runs only when accounts are enabled
if os.getenv("ACCOUNTS_ENABLED") ~= "true" then
ngx.say(json.encode{authenticated = false})
return ngx.exit(ngx.HTTP_OK)
end
local res = ngx.location.capture("/accounts/user", { copy_all_vars = true })
if res.status == ngx.HTTP_OK then
local limits = json.decode(res.body)
ngx.say(json.encode{authenticated = limits.tier > 0})
return ngx.exit(ngx.HTTP_OK)
end
ngx.say(json.encode{authenticated = false})
return ngx.exit(ngx.HTTP_OK)
}
}
location /accounts {
internal; # internal endpoint only
access_log off; # do not log traffic
proxy_cache skynet; # use general nginx cache
proxy_cache_key $uri+$skynet_jwt; # include skynet-jwt cookie (mapped to skynet_jwt)
proxy_cache_valid 200 401 1m; # cache success and unauthorized responses for 1 minute
proxy_buffer_size 8k; # increase size of the buffer to fit jwt in cache key
rewrite /accounts(.*) $1 break; # drop the /accounts prefix from uri
proxy_pass http://10.10.10.70:3000; # hardcoded ip because accounts might not be available
}
# include custom locations, specific to the server
include /etc/nginx/conf.d/server-override/*;
}