577 lines
20 KiB
Plaintext
577 lines
20 KiB
Plaintext
proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=skynet:10m max_size=10g inactive=24h use_temp_path=off;
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# this runs before forking out nginx worker processes
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init_by_lua_block {
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require "cjson"
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require "socket.http"
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}
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# ratelimit specified IPs
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geo $limit {
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default 0;
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include /etc/nginx/conf.d/include/ratelimited;
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}
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map $limit $limit_key {
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0 "";
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1 $binary_remote_addr;
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}
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limit_req_zone $binary_remote_addr zone=uploads_by_ip:10m rate=10r/s;
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limit_req_zone $limit_key zone=uploads_by_ip_throttled:10m rate=10r/m;
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limit_req_zone $binary_remote_addr zone=registry_access_by_ip:10m rate=60r/m;
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limit_req_zone $limit_key zone=registry_access_by_ip_throttled:10m rate=20r/m;
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limit_conn_zone $binary_remote_addr zone=upload_conn:10m;
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limit_conn_zone $limit_key zone=upload_conn_rl:10m;
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limit_conn_zone $binary_remote_addr zone=downloads_by_ip:10m;
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limit_req_status 429;
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limit_conn_status 429;
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# since we are proxying request to nginx from caddy, access logs will contain caddy's ip address
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# as the request address so we need to use real_ip_header module to use ip address from
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# X-Forwarded-For header as a real ip address of the request
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set_real_ip_from 10.0.0.0/8;
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set_real_ip_from 127.0.0.1/32;
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set_real_ip_from 172.16.0.0/12;
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set_real_ip_from 192.168.0.0/16;
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real_ip_header X-Forwarded-For;
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# skynet-jwt contains dash so we cannot use $cookie_skynet-jwt
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# https://richardhart.me/2012/03/18/logging-nginx-cookies-with-dashes/
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map $http_cookie $skynet_jwt {
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default '';
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~skynet-jwt=(?<match>[^\;]+) $match;
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}
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upstream siad {
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server sia:9980;
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}
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server {
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listen 80 default_server;
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listen [::]:80 default_server;
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# understand the regex https://regex101.com/r/BGQvi6/6
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server_name "~^(((?<base32_subdomain>([a-z0-9]{55}))|(?<hns_domain>[^\.]+)\.hns)\.)?((?<portal_domain>[^.]+)\.)?(?<domain>[^.]+)\.(?<tld>[^.]+)$";
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# ddos protection: closing slow connections
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client_body_timeout 5s;
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client_header_timeout 5s;
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# Increase the body buffer size, to ensure the internal POSTs can always
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# parse the full POST contents into memory.
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client_body_buffer_size 128k;
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client_max_body_size 128k;
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# legacy endpoint rewrite
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rewrite ^/portals /skynet/portals permanent;
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rewrite ^/stats /skynet/stats permanent;
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rewrite ^/skynet/blacklist /skynet/blocklist permanent;
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rewrite ^/account/(.*) https://account.$domain.$tld/$1 permanent;
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# This is only safe workaround to reroute based on some conditions
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# See https://www.nginx.com/resources/wiki/start/topics/depth/ifisevil/
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recursive_error_pages on;
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# redirect links with base32 encoded skylink in subdomain
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error_page 460 = @base32_subdomain;
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if ($base32_subdomain != "") {
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return 460;
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}
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# redirect links with handshake domain on hns subdomain
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error_page 461 = @hns_domain;
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if ($hns_domain != "") {
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return 461;
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}
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location / {
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include /etc/nginx/conf.d/include/cors;
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proxy_pass http://website:9000;
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}
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location /docs {
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proxy_pass https://skynetlabs.github.io/skynet-docs;
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}
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location /skynet/blocklist {
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include /etc/nginx/conf.d/include/cors;
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proxy_cache skynet;
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proxy_cache_valid any 1m; # cache blocklist for 1 minute
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proxy_set_header User-Agent: Sia-Agent;
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proxy_pass http://siad/skynet/blocklist;
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}
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location /skynet/portals {
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include /etc/nginx/conf.d/include/cors;
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proxy_cache skynet;
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proxy_cache_valid any 1m; # cache portals for 1 minute
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proxy_set_header User-Agent: Sia-Agent;
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proxy_pass http://siad/skynet/portals;
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}
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location /skynet/stats {
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include /etc/nginx/conf.d/include/cors;
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set $response_body ''; # we need a variable for full response body (not chuncked)
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# modify the response to add numfiles and totalsize to account for node rotation
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# example prevstats.lua: 'return { numfiles = 12345, totalsize = 123456789 }'
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body_filter_by_lua_block {
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local file_exists = io.open("/data/nginx/skynet/prevstats.lua")
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if file_exists then
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file_exists.close()
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-- because response data is chunked, we need to concat ngx.arg[1] until
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-- last chunk is received (when ngx.arg[2] is set to true)
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ngx.var.response_body = ngx.var.response_body .. ngx.arg[1]
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if ngx.arg[2] then
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local json = require('cjson')
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local prevstats = require('/data/nginx/skynet/prevstats')
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local stats = json.decode(ngx.var.response_body)
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stats.uploadstats.numfiles = stats.uploadstats.numfiles + prevstats.numfiles
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stats.uploadstats.totalsize = stats.uploadstats.totalsize + prevstats.totalsize
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ngx.arg[1] = json.encode(stats)
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else
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-- do not send any data in this chunk (wait for last chunk)
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ngx.arg[1] = nil
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end
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end
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}
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proxy_cache skynet;
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proxy_cache_valid any 1m; # cache stats for 1 minute
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proxy_set_header User-Agent: Sia-Agent;
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proxy_read_timeout 5m; # extend the read timeout
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proxy_pass http://siad/skynet/stats;
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}
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location /health-check {
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include /etc/nginx/conf.d/include/cors;
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access_log off; # do not log traffic to health-check endpoint
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proxy_pass http://10.10.10.60:3100; # hardcoded ip because health-check waits for nginx
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}
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location /hns {
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include /etc/nginx/conf.d/include/proxy-buffer;
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# variable definititions - we need to define a variable to be able to access it in lua by ngx.var.something
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set $skylink ''; # placeholder for the raw 46 bit skylink
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set $rest ''; # placeholder for the rest of the url that gets appended to skylink (path and args)
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# resolve handshake domain by requesting to /hnsres endpoint and assign correct values to $skylink and $rest
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access_by_lua_block {
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local json = require('cjson')
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-- match the request_uri and extract the hns domain and anything that is passed in the uri after it
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-- example: /hns/something/foo/bar?baz=1 matches:
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-- > hns_domain_name: something
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-- > request_uri_rest: /foo/bar/?baz=1
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local hns_domain_name, request_uri_rest = string.match(ngx.var.request_uri, "/hns/([^/?]+)(.*)")
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-- make a get request to /hnsres endpoint with the domain name from request_uri
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local hnsres_res = ngx.location.capture("/hnsres/" .. hns_domain_name)
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-- we want to fail with a generic 404 when /hnsres returns anything but 200 OK with a skylink
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if hnsres_res.status ~= ngx.HTTP_OK then
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ngx.exit(ngx.HTTP_NOT_FOUND)
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end
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-- since /hnsres endpoint response is a json, we need to decode it before we access it
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-- example response: '{"skylink":"sia://XABvi7JtJbQSMAcDwnUnmp2FKDPjg8_tTTFP4BwMSxVdEg"}'
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local hnsres_json = json.decode(hnsres_res.body)
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-- define local variable containing rest of the skylink if provided
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local skylink_rest
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if hnsres_json.skylink then
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-- try to match the skylink with sia:// prefix
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skylink, skylink_rest = string.match(hnsres_json.skylink, "sia://([^/?]+)(.*)")
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-- in case the skylink did not match, assume that there is no sia:// prefix and try to match again
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if skylink == nil then
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skylink, skylink_rest = string.match(hnsres_json.skylink, "/?([^/?]+)(.*)")
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end
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elseif hnsres_json.registry then
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local publickey = hnsres_json.registry.publickey
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local datakey = hnsres_json.registry.datakey
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-- make a get request to /skynet/registry endpoint with the credentials from text record
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local registry_res = ngx.location.capture("/skynet/registry/cached?publickey=" .. publickey .. "&datakey=" .. datakey)
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-- we want to fail with a generic 404 when /skynet/registry returns anything but 200 OK
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if registry_res.status ~= ngx.HTTP_OK then
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ngx.exit(ngx.HTTP_NOT_FOUND)
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end
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-- since /skynet/registry endpoint response is a json, we need to decode it before we access it
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local registry_json = json.decode(registry_res.body)
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-- response will contain a hex encoded skylink, we need to decode it
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local data = (registry_json.data:gsub('..', function (cc)
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return string.char(tonumber(cc, 16))
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end))
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skylink = data
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end
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-- fail with a generic 404 if skylink has not been extracted from a valid /hnsres response for some reason
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if not skylink then
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ngx.exit(ngx.HTTP_NOT_FOUND)
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end
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ngx.var.skylink = skylink
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if request_uri_rest == "/" and skylink_rest ~= nil and skylink_rest ~= "" and skylink_rest ~= "/" then
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ngx.var.rest = skylink_rest
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else
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ngx.var.rest = request_uri_rest
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end
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}
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# we proxy to another nginx location rather than directly to siad because we don't want to deal with caching here
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proxy_pass http://127.0.0.1/$skylink$rest;
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# in case siad returns location header, we need to replace the skylink with the domain name
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header_filter_by_lua_block {
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if ngx.header.location then
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-- match hns domain from the request_uri
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local hns_domain_name = string.match(ngx.var.request_uri, "/hns/([^/?]+)")
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-- match location redirect part after the skylink
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local location_rest = string.match(ngx.header.location, "[^/?]+(.*)");
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-- because siad will set the location header to ie. XABvi7JtJbQSMAcDwnUnmp2FKDPjg8_tTTFP4BwMSxVdEg/index.html
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-- we need to replace the skylink with the domain_name so we are not redirected to skylink
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ngx.header.location = hns_domain_name .. location_rest
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end
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}
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}
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location /hnsres {
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include /etc/nginx/conf.d/include/cors;
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proxy_pass http://handshake-api:3100;
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}
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# internal registry endpoint that caches calls for a certain period of time
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# it is not suitable for every registry call but some requests might be cached
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# and we are using it currently for caching registry resolutions from /hns calls
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location /skynet/registry/cached {
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internal; # internal endpoint only
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access_log off; # do not log traffic
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proxy_cache skynet;
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proxy_cache_key publickey=$arg_publickey&datakey=$arg_datakey; # cache based on publickey and datakey
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proxy_cache_valid 200 30s; # cache only 200 responses and only for 30 seconds
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proxy_cache_lock on; # queue cache requests for the same resource until it is fully cached
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proxy_cache_bypass $cookie_nocache $arg_nocache; # add cache bypass option
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proxy_pass http://127.0.0.1/skynet/registry$is_args$args;
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}
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location /skynet/registry {
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include /etc/nginx/conf.d/include/cors;
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include /etc/nginx/conf.d/include/sia-auth;
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limit_req zone=registry_access_by_ip burst=600 nodelay;
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limit_req zone=registry_access_by_ip_throttled burst=200 nodelay;
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proxy_set_header User-Agent: Sia-Agent;
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proxy_read_timeout 600; # siad should timeout with 404 after 5 minutes
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proxy_pass http://siad/skynet/registry;
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access_by_lua_block {
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-- this block runs only when accounts are enabled
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if os.getenv("ACCOUNTS_ENABLED", "0") == "0" then return end
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local res = ngx.location.capture("/accounts/user/limits", { copy_all_vars = true })
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if res.status == ngx.HTTP_OK then
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local json = require('cjson')
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local limits = json.decode(res.body)
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if limits.registry > 0 then
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ngx.sleep(limits.registry / 1000)
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end
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end
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}
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# register the registry access in accounts service (cookies should contain jwt)
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log_by_lua_block {
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-- this block runs only when accounts are enabled
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if os.getenv("ACCOUNTS_ENABLED", "0") == "0" then return end
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if ngx.status == ngx.HTTP_OK or ngx.status == ngx.HTTP_NOT_FOUND then
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local http = require("socket.http")
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local method = ngx.req.get_method() == ngx.HTTP_GET and "read" or "write"
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local ok, statusCode, headers, statusText = http.request {
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url = "http://accounts:3000/track/registry/" .. method,
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method = "POST",
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headers = ngx.req.get_headers()
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}
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if statusCode ~= ngx.HTTP_NO_CONTENT and statusCode ~= ngx.HTTP_UNAUTHORIZED then
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ngx.log(ngx.ERR, "accounts endpoint /track/registry/" .. method .. " failed with error " .. statusCode)
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end
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end
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}
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}
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location /skynet/skyfile {
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include /etc/nginx/conf.d/include/cors;
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include /etc/nginx/conf.d/include/sia-auth;
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limit_req zone=uploads_by_ip burst=100 nodelay;
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limit_req zone=uploads_by_ip_throttled;
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limit_conn upload_conn 10;
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limit_conn upload_conn_rl 1;
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client_max_body_size 1000M; # make sure to limit the size of upload to a sane value
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proxy_read_timeout 600;
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proxy_request_buffering off; # stream uploaded files through the proxy as it comes in
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proxy_set_header Expect $http_expect;
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proxy_set_header User-Agent: Sia-Agent;
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# Extract 2 sets of 2 characters from $request_id and assign to $dir1, $dir2
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# respectfully. The rest of the $request_id is going to be assigned to $dir3.
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# We use those variables to automatically generate a unique path for the uploaded file.
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# This ensures that not all uploaded files end up in the same directory, which is something
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# that causes performance issues in the renter.
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# Example path result: /af/24/9bc5ec894920ccc45634dc9a8065
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if ($request_id ~* "(\w{2})(\w{2})(\w+)") {
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set $dir1 $1;
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set $dir2 $2;
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set $dir3 $3;
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}
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# access_by_lua_block {
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# -- this block runs only when accounts are enabled
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# if os.getenv("ACCOUNTS_ENABLED", "0") == "0" then return end
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# ngx.var.upload_limit_rate = 5 * 1024 * 1024
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# local res = ngx.location.capture("/accounts/user", { copy_all_vars = true })
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# if res.status == ngx.HTTP_OK then
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# local json = require('cjson')
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# local user = json.decode(res.body)
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# ngx.var.upload_limit_rate = ngx.var.upload_limit_rate * (user.tier + 1)
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# end
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# }
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# proxy this call to siad endpoint (make sure the ip is correct)
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proxy_pass http://siad/skynet/skyfile/$dir1/$dir2/$dir3$is_args$args;
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# register the upload in accounts service (cookies should contain jwt)
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log_by_lua_block {
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-- this block runs only when accounts are enabled
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if os.getenv("ACCOUNTS_ENABLED", "0") == "0" then return end
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local skylink = ngx.header["Skynet-Skylink"]
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if skylink and ngx.status >= ngx.HTTP_OK and ngx.status < ngx.HTTP_SPECIAL_RESPONSE then
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local http = require("socket.http")
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local ok, statusCode, headers, statusText = http.request {
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url = "http://accounts:3000/track/upload/" .. skylink,
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method = "POST",
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headers = ngx.req.get_headers()
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}
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if statusCode ~= ngx.HTTP_NO_CONTENT and statusCode ~= ngx.HTTP_UNAUTHORIZED then
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ngx.log(ngx.ERR, "accounts endpoint /track/upload/" .. skylink .. " failed with error " .. statusCode)
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end
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end
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}
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}
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# endpoing implementing resumable file uploads open protocol https://tus.io
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location /skynet/tus {
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include /etc/nginx/conf.d/include/cors;
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client_max_body_size 50M; # tus chunks size is 40M + leaving 10M of breathing room
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proxy_read_timeout 600;
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proxy_request_buffering off; # stream uploaded files through the proxy as it comes in
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proxy_set_header Expect $http_expect;
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# proxy /skynet/tus requests to siad endpoint with all arguments
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proxy_pass http://siad;
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# rewrite tus headers to use correct uri
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proxy_redirect https://siad/ https://$domain.$tld/;
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}
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location /skynet/metadata {
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include /etc/nginx/conf.d/include/cors;
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proxy_set_header User-Agent: Sia-Agent;
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proxy_pass http://siad;
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}
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location /skynet/resolve {
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include /etc/nginx/conf.d/include/cors;
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proxy_set_header User-Agent: Sia-Agent;
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proxy_pass http://siad;
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}
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location ~ "^/(([a-zA-Z0-9-_]{46}|[a-z0-9]{55})(/.*)?)$" {
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include /etc/nginx/conf.d/include/cors;
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include /etc/nginx/conf.d/include/proxy-buffer;
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include /etc/nginx/conf.d/include/proxy-cache-downloads;
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# redirect purge calls to separate location
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error_page 462 = @purge;
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if ($request_method = PURGE) {
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return 462;
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}
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limit_conn downloads_by_ip 100; # ddos protection: max 100 downloads at a time
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# we need to explicitly use set directive here because $2 and $3 will contain values with
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# decoded whitespaces and set will re-encode it for us before passing it to proxy_pass
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set $skylink $2;
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set $path $3;
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# v2 support
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set $skylink_v1 $skylink;
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access_by_lua_block {
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-- disable cache if this is skylink v2
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local isBase32v2 = string.len(ngx.var.skylink) == 55 and string.sub(ngx.var.skylink, 0, 2) == "04"
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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)
|
|
if res.status == ngx.HTTP_OK then
|
|
local json = require('cjson')
|
|
local resolve = json.decode(res.body)
|
|
ngx.var.skylink_v1 = resolve.skylink
|
|
else
|
|
ngx.say(res.body)
|
|
ngx.exit(res.status)
|
|
end
|
|
end
|
|
|
|
-- this block runs only when accounts are enabled
|
|
if os.getenv("ACCOUNTS_ENABLED", "0") == "0" 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
|
|
}
|
|
|
|
# in case siad returns location header and we have skylink v2, we need to replace the skylink v1 with v2
|
|
header_filter_by_lua_block {
|
|
if ngx.var.skylink != ngx.var.skylink_v1 then
|
|
if ngx.header.location then
|
|
ngx.header.location = ngx.header.location:gsub("^" .. ngx.var.skylink_v1, ngx.var.skylink)
|
|
end
|
|
ngx.header["Skynet-Skylink"] = ngx.var.skylink
|
|
end
|
|
}
|
|
|
|
# register the download in accounts service (cookies should contain jwt)
|
|
log_by_lua_block {
|
|
-- this block runs only when accounts are enabled
|
|
if os.getenv("ACCOUNTS_ENABLED", "0") == "0" then return end
|
|
|
|
local skylink = ngx.header["Skynet-Skylink"]
|
|
if skylink and ngx.status >= ngx.HTTP_OK and ngx.status < ngx.HTTP_SPECIAL_RESPONSE then
|
|
local http = require("socket.http")
|
|
local query = table.concat({ "status=" .. ngx.status, "bytes=" .. ngx.var.body_bytes_sent }, "&")
|
|
local ok, statusCode, headers, statusText = http.request {
|
|
url = "http://accounts:3000/track/download/" .. skylink .. "?" .. query,
|
|
method = "POST",
|
|
headers = ngx.req.get_headers()
|
|
}
|
|
if statusCode ~= ngx.HTTP_NO_CONTENT and statusCode ~= ngx.HTTP_UNAUTHORIZED then
|
|
ngx.log(ngx.ERR, "accounts endpoint /track/download/" .. skylink .. " failed with error " .. statusCode)
|
|
end
|
|
end
|
|
}
|
|
|
|
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$path$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;
|
|
}
|
|
|
|
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", "0") == "0" 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
|
|
|
|
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/*;
|
|
}
|