to bel.blue

.config/config.go

@@ -1,115 +0,0 @@
-package config
-
-import (
-	"local/rproxy3/storage/packable"
-	"log"
-	"strconv"
-	"strings"
-)
-
-func GetPort() string {
-	v := packable.NewString()
-	conf.Get(nsConf, flagPort, v)
-	return ":" + strings.TrimPrefix(v.String(), ":")
-}
-
-func GetRoutes() map[string]string {
-	v := packable.NewString()
-	conf.Get(nsConf, flagRoutes, v)
-	m := make(map[string]string)
-	for _, v := range strings.Split(v.String(), ",") {
-		if len(v) == 0 {
-			return m
-		}
-		from := v[:strings.Index(v, ":")]
-		to := v[strings.Index(v, ":")+1:]
-		m[from] = to
-	}
-	return m
-}
-
-func GetTCP() (string, bool) {
-	v := packable.NewString()
-	conf.Get(nsConf, flagTCP, v)
-	tcpAddr := v.String()
-	return tcpAddr, notEmpty(tcpAddr)
-}
-
-func GetSSL() (string, string, bool) {
-	v := packable.NewString()
-	conf.Get(nsConf, flagCert, v)
-	certPath := v.String()
-	conf.Get(nsConf, flagKey, v)
-	keyPath := v.String()
-	return certPath, keyPath, notEmpty(certPath, keyPath)
-}
-
-func GetAuth() (string, string, bool) {
-	v := packable.NewString()
-	conf.Get(nsConf, flagUser, v)
-	user := v.String()
-	conf.Get(nsConf, flagPass, v)
-	pass := v.String()
-	return user, pass, notEmpty(user, pass)
-}
-
-func notEmpty(s ...string) bool {
-	for i := range s {
-		if s[i] == "" || s[i] == "/dev/null" {
-			return false
-		}
-	}
-	return true
-}
-
-func GetRate() (int, int) {
-	r := packable.NewString()
-	conf.Get(nsConf, flagRate, r)
-	b := packable.NewString()
-	conf.Get(nsConf, flagBurst, b)
-
-	rate, err := strconv.Atoi(r.String())
-	if err != nil {
-		log.Printf("illegal rate: %v", err)
-		rate = 5
-	}
-	burst, _ := strconv.Atoi(b.String())
-	if err != nil {
-		log.Printf("illegal burst: %v", err)
-		burst = 5
-	}
-
-	return rate, burst
-}
-
-func GetTimeout() int {
-	t := packable.NewString()
-	conf.Get(nsConf, flagTimeout, t)
-
-	timeout, err := strconv.Atoi(t.String())
-	if err != nil || timeout == 5 {
-		return 5
-	}
-
-	return timeout
-}
-
-func GetRewrites(hostMatch string) map[string]string {
-	v := packable.NewString()
-	conf.Get(nsConf, flagRewrites, v)
-	m := make(map[string]string)
-	for _, v := range strings.Split(v.String(), ",") {
-		vs := strings.Split(v, ":")
-		if len(v) < 3 {
-			continue
-		}
-		host := vs[0]
-		if host != hostMatch {
-			continue
-		}
-		from := vs[1]
-		to := strings.Join(vs[2:], ":")
-		m[from] = to
-	}
-	return m
-}

.config/new.go

@@ -1,161 +0,0 @@
-package config
-
-import (
-	"flag"
-	"io/ioutil"
-	"local/rproxy3/storage"
-	"local/rproxy3/storage/packable"
-	"log"
-	"os"
-	"strings"
-
-	yaml "gopkg.in/yaml.v2"
-)
-
-const nsConf = "configuration"
-const flagPort = "p"
-const flagRoutes = "r"
-const flagConf = "c"
-const flagCert = "crt"
-const flagTCP = "tcp"
-const flagKey = "key"
-const flagUser = "user"
-const flagPass = "pass"
-const flagRate = "rate"
-const flagBurst = "burst"
-const flagTimeout = "timeout"
-const flagRewrites = "rw"
-
-var conf = storage.NewMap()
-
-type toBind struct {
-	flag  string
-	value *string
-}
-
-type fileConf struct {
-	Port     string   `yaml:"p"`
-	Routes   []string `yaml:"r"`
-	CertPath string   `yaml:"crt"`
-	TCPPath  string   `yaml:"tcp"`
-	KeyPath  string   `yaml:"key"`
-	Username string   `yaml:"user"`
-	Password string   `yaml:"pass"`
-	Rate     string   `yaml:"rate"`
-	Burst    string   `yaml:"burst"`
-	Timeout  string   `yaml:"timeout"`
-	Rewrites []string `yaml:"rw"`
-}
-
-func Init() error {
-	log.SetFlags(log.Ldate | log.Ltime | log.Llongfile)
-	log.SetFlags(log.Ltime | log.Lshortfile)
-	if err := fromFile(); err != nil {
-		return err
-	}
-	if err := fromFlags(); err != nil {
-		return err
-	}
-	return nil
-}
-
-func fromFile() error {
-	flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
-	defer func() {
-		flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
-	}()
-	flag.String(flagConf, "/dev/null", "yaml config file path")
-	flag.Parse()
-	confFlag := flag.Lookup(flagConf)
-	if confFlag == nil || confFlag.Value.String() == "" {
-		return nil
-	}
-	confBytes, err := ioutil.ReadFile(confFlag.Value.String())
-	if err != nil {
-		return err
-	}
-	var c fileConf
-	if err := yaml.Unmarshal(confBytes, &c); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagPort, packable.NewString(c.Port)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagRoutes, packable.NewString(strings.Join(c.Routes, ","))); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagCert, packable.NewString(c.CertPath)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagTCP, packable.NewString(c.TCPPath)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagKey, packable.NewString(c.KeyPath)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagUser, packable.NewString(c.Username)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagPass, packable.NewString(c.Password)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagRate, packable.NewString(c.Rate)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagBurst, packable.NewString(c.Burst)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagTimeout, packable.NewString(c.Timeout)); err != nil {
-		return err
-	}
-	if err := conf.Set(nsConf, flagRewrites, packable.NewString(strings.Join(c.Rewrites, ","))); err != nil {
-		return err
-	}
-	return nil
-}
-
-func fromFlags() error {
-	binds := make([]toBind, 0)
-	binds = append(binds, addFlag(flagPort, "51555", "port to bind to"))
-	binds = append(binds, addFlag(flagConf, "", "configuration file path"))
-	binds = append(binds, addFlag(flagRoutes, "", "comma-separated routes to map, each as from:scheme://to.tld:port"))
-	binds = append(binds, addFlag(flagCert, "", "path to .crt"))
-	binds = append(binds, addFlag(flagTCP, "", "tcp addr"))
-	binds = append(binds, addFlag(flagKey, "", "path to .key"))
-	binds = append(binds, addFlag(flagUser, "", "basic auth username"))
-	binds = append(binds, addFlag(flagPass, "", "basic auth password"))
-	binds = append(binds, addFlag(flagRate, "100", "rate limit per second"))
-	binds = append(binds, addFlag(flagBurst, "100", "rate limit burst"))
-	binds = append(binds, addFlag(flagTimeout, "30", "seconds to wait for limiter"))
-	binds = append(binds, addFlag(flagRewrites, "", "comma-separated from:replace:replacement:oauth to rewrite in response bodies"))
-	flag.Parse()
-
-	for _, bind := range binds {
-		confFlag := flag.Lookup(bind.flag)
-		if confFlag == nil || confFlag.Value.String() == "" {
-			continue
-		}
-		if err := conf.Set(nsConf, bind.flag, packable.NewString(*bind.value)); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func addFlag(key, def, help string) toBind {
-	def = getFlagOrDefault(key, def)
-	v := flag.String(key, def, help)
-	return toBind{
-		flag:  key,
-		value: v,
-	}
-}
-
-func getFlagOrDefault(key, def string) string {
-	v := packable.NewString()
-	if err := conf.Get(nsConf, key, v); err != nil {
-		return def
-	}
-	return v.String()
-}

.config/new_test.go

@@ -1,46 +0,0 @@
-package config
-
-import (
-	"flag"
-	"os"
-	"testing"
-)
-
-func TestInit(t *testing.T) {
-	was := os.Args[:]
-	os.Args = []string{"program"}
-	flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
-	defer func() {
-		os.Args = was[:]
-	}()
-
-	if err := Init(); err != nil {
-		t.Errorf("failed to init: %v", err)
-	}
-}
-
-func TestFromFile(t *testing.T) {
-	was := os.Args[:]
-	os.Args = []string{"program"}
-	flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
-	defer func() {
-		os.Args = was[:]
-	}()
-
-	if err := fromFile(); err != nil {
-		t.Errorf("failed from file: %v", err)
-	}
-}
-
-func TestFromFlags(t *testing.T) {
-	was := os.Args[:]
-	os.Args = []string{"program"}
-	flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
-	defer func() {
-		os.Args = was[:]
-	}()
-
-	if err := fromFlags(); err != nil {
-		t.Errorf("failed from flags: %v", err)
-	}
-}

build.sh

@@ -0,0 +1,5 @@
+#! /usr/bin/env bash
+
+export CGO_ENABLED=1 
+export CC=x86_64-linux-musl-gcc   
+exec go build -ldflags="-linkmode external -extldflags '-static'" -o exec-rproxy3

config/config.go

@@ -1,17 +1,23 @@
 package config
 
 import (
+	"encoding/json"
 	"fmt"
 	"log"
+	"regexp"
 	"strings"
 	"time"
+
+	"gopkg.in/yaml.v2"
 )
 
 type Proxy struct {
-	To string
+	Auth string
+	From string
+	To   string
 }
 
-func parseProxy(s string) (string, Proxy) {
+func parseOneProxyCSV(s string) (string, Proxy) {
 	p := Proxy{}
 	key := ""
 	l := strings.Split(s, ",")
@@ -24,22 +30,26 @@ func parseProxy(s string) (string, Proxy) {
 	return key, p
 }
 
-func GetBOAuthZ() (string, bool) {
-	boauthz := conf.Get("oauth").GetString()
-	return boauthz, boauthz != ""
-}
-
 func GetAuth() (string, string, bool) {
 	user := conf.Get("user").GetString()
 	pass := conf.Get("pass").GetString()
 	return user, pass, user != "" && pass != ""
 }
 
+func GetTrim() string {
+	return conf.Get("trim").GetString()
+}
+
 func GetPort() string {
 	port := conf.Get("p").GetInt()
 	return ":" + fmt.Sprint(port)
 }
 
+func GetAltPort() string {
+	port := conf.Get("ap").GetInt()
+	return ":" + fmt.Sprint(port)
+}
+
 func GetRate() (int, int) {
 	rate := conf.Get("r").GetInt()
 	burst := conf.Get("b").GetInt()
@@ -48,11 +58,31 @@ func GetRate() (int, int) {
 }
 
 func GetRoutes() map[string]Proxy {
-	list := conf.Get("proxy").GetString()
+	s := conf.Get("proxy2").GetString()
+	var dict map[string]string
+	if err := yaml.Unmarshal([]byte(s), &dict); err == nil && len(s) > 0 {
+		pattern := regexp.MustCompile(`(([^:]*):)?(([^:]*):)?([a-z0-9]*:.*)`)
+		result := map[string]Proxy{}
+		for k, v := range dict {
+			submatches := pattern.FindAllStringSubmatch(v, -1)
+			log.Printf("%+v", submatches)
+			result[k] = Proxy{
+				Auth: submatches[0][2],
+				From: submatches[0][4],
+				To:   submatches[0][5],
+			}
+		}
+		return result
+	}
+	return getRoutesCSV()
+}
+
+func getRoutesCSV() map[string]Proxy {
+	list := conf.Get("proxy2").GetString()
 	definitions := strings.Split(list, ",,")
 	routes := make(map[string]Proxy)
 	for _, definition := range definitions {
-		k, v := parseProxy(definition)
+		k, v := parseOneProxyCSV(definition)
 		routes[k] = v
 	}
 	return routes
@@ -73,3 +103,27 @@ func GetTimeout() time.Duration {
 	timeout := conf.Get("timeout").GetDuration()
 	return timeout
 }
+
+func GetCORS(key string) bool {
+	cors := conf.GetString("cors")
+	var m map[string]bool
+	if err := json.Unmarshal([]byte(cors), &m); err != nil {
+		return false
+	}
+	_, ok := m[key]
+	return ok
+}
+
+func GetNoPath(key string) bool {
+	nopath := conf.GetString("nopath")
+	var m map[string]bool
+	if err := json.Unmarshal([]byte(nopath), &m); err != nil {
+		return false
+	}
+	_, ok := m[key]
+	return ok
+}
+
+func GetCompression() bool {
+	return conf.GetBool("compression")
+}

config/new.go

@@ -2,11 +2,13 @@ package config
 
 import (
 	"fmt"
-	"local/args"
 	"log"
 	"os"
 	"strings"
 	"time"
+
+	"gitea.bel.blue/local/args"
+	"gitea.bel.blue/local/logb"
 )
 
 var conf *args.ArgSet
@@ -26,6 +28,7 @@ func Refresh() error {
 		return err
 	}
 	conf = as
+	logb.Set(logb.LevelFromString(as.GetString("level")))
 	return nil
 }
 
@@ -39,14 +42,19 @@ func parseArgs() (*args.ArgSet, error) {
 	as.Append(args.STRING, "user", "username for basic auth", "")
 	as.Append(args.STRING, "pass", "password for basic auth", "")
 	as.Append(args.INT, "p", "port for service", 51555)
+	as.Append(args.INT, "ap", "alt port for always http service", 51556)
 	as.Append(args.INT, "r", "rate per second for requests", 100)
 	as.Append(args.INT, "b", "burst requests", 100)
+	as.Append(args.BOOL, "compress", "enable compression", true)
 	as.Append(args.STRING, "crt", "path to crt for ssl", "")
 	as.Append(args.STRING, "key", "path to key for ssl", "")
+	as.Append(args.STRING, "trim", "path prefix to trim, like '/abc' to change '/abc/def' to '/def'", "")
 	as.Append(args.STRING, "tcp", "address for tcp only tunnel", "")
 	as.Append(args.DURATION, "timeout", "timeout for tunnel", time.Minute)
-	as.Append(args.STRING, "proxy", "double-comma separated (+ if oauth)from,scheme://to.tld:port,oauth,,", "")
-	as.Append(args.STRING, "oauth", "url for boauthz", "")
+	as.Append(args.STRING, "proxy2", "double-comma separated 'from,scheme://to.tld:port,,' OR a yaml dictionary of 'from: (password:)scheme://to.tld:port'", "")
+	as.Append(args.STRING, "cors", "json dict key:true for keys to set CORS permissive headers, like {\"from\":true}", "{}")
+	as.Append(args.STRING, "nopath", "json dict key:true for keys to remove all path info from forwarded request, like -cors", "{}")
+	as.Append(args.STRING, "level", "log level", "info")
 
 	err := as.Parse()
 	return as, err

example_config.yaml

@@ -7,5 +7,7 @@ crt: ""
 key: ""
 tcp: ""
 timeout: 1m
-proxy: a,http://localhost:41912,,+b,http://localhost:41912
+proxy2: |
+  a: http://localhost:41912
+  b: password:http://localhost:41912
 oauth: http://localhost:23456

go.mod

@@ -0,0 +1,17 @@
+module gitea.bel.blue/local/rproxy3
+
+go 1.18
+
+require (
+	gitea.bel.blue/local/args v0.0.0-20251121001304-83c57f856714
+	gitea.bel.blue/local/logb v0.0.0-20251121001353-d45d53fbaae9
+	github.com/google/uuid v1.3.0
+	golang.org/x/time v0.1.0
+)
+
+require gopkg.in/yaml.v2 v2.4.0
+
+require (
+	github.com/kr/pretty v0.1.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+)

go.sum

@@ -0,0 +1,18 @@
+gitea.bel.blue/local/args v0.0.0-20251121001304-83c57f856714 h1:JHV86INH1QmPJoyIhdrDLJq7OKta+fJAwbK0pnxI4Hc=
+gitea.bel.blue/local/args v0.0.0-20251121001304-83c57f856714/go.mod h1:GCzui3GPhOgKgGYNqtW55YkI3vIWCQEHPydGjFhaXV0=
+gitea.bel.blue/local/logb v0.0.0-20251121001353-d45d53fbaae9 h1:lBkQPYgWZnPxt6CvsSwVh9EZtuvi2lIbGOHPqe/gn1Y=
+gitea.bel.blue/local/logb v0.0.0-20251121001353-d45d53fbaae9/go.mod h1:+8sJb8UksdadKy43czL7/3TcfBwCkuYT6hFY+RaxP48=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+golang.org/x/time v0.1.0 h1:xYY+Bajn2a7VBmTM5GikTmnK8ZuX8YgnQCqZpbBNtmA=
+golang.org/x/time v0.1.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

main.go

@@ -1,8 +1,8 @@
 package main
 
 import (
-	"local/rproxy3/config"
-	"local/rproxy3/server"
+	"gitea.bel.blue/local/rproxy3/config"
+	"gitea.bel.blue/local/rproxy3/server"
 )
 
 func main() {

main_test.go

@@ -34,7 +34,7 @@ func TestHTTPSMain(t *testing.T) {
 			"username",
 			"-pass",
 			"password",
-			"-proxy",
+			"-proxy2",
 			"hello," + addr,
 			"-crt",
 			"./testdata/rproxy3server.crt",
@@ -89,7 +89,7 @@ func TestHTTPMain(t *testing.T) {
 			"username",
 			"-pass",
 			"password",
-			"-proxy",
+			"-proxy2",
 			"hello," + addr,
 		}
 		main()

server/new.go

@@ -1,18 +1,21 @@
 package server
 
 import (
-	"local/rproxy3/config"
-	"local/rproxy3/storage"
+	"gitea.bel.blue/local/rproxy3/config"
+	"gitea.bel.blue/local/rproxy3/storage"
 
 	"golang.org/x/time/rate"
 )
 
 func New() *Server {
 	port := config.GetPort()
+	altport := config.GetAltPort()
 	r, b := config.GetRate()
-	return &Server{
+	server := &Server{
 		db:      storage.NewMap(),
 		addr:    port,
+		altaddr: altport,
 		limiter: rate.NewLimiter(rate.Limit(r), b),
 	}
+	return server
 }

server/proxy.go

@@ -4,12 +4,14 @@ import (
 	"bytes"
 	"crypto/tls"
 	"io"
-	"local/rproxy3/storage/packable"
 	"log"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
 	"strings"
+
+	"gitea.bel.blue/local/rproxy3/config"
+	"gitea.bel.blue/local/rproxy3/storage/packable"
 )
 
 type redirPurge struct {
@@ -25,6 +27,7 @@ type rewrite struct {
 
 func (s *Server) Proxy(w http.ResponseWriter, r *http.Request) {
 	newURL, err := s.lookup(mapKey(r.Host))
+	r.URL.Path = strings.TrimPrefix(r.URL.Path, config.GetTrim())
 	var transport http.RoundTripper
 	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 	transport = &redirPurge{
@@ -37,7 +40,7 @@ func (s *Server) Proxy(w http.ResponseWriter, r *http.Request) {
 		log.Printf("unknown host lookup %q", r.Host)
 		return
 	}
-	r.Host = newURL.Host
+	//r.Host = newURL.Host
 	proxy := httputil.NewSingleHostReverseProxy(newURL)
 	proxy.Transport = transport
 	proxy.ServeHTTP(w, r)
@@ -49,10 +52,16 @@ func (s *Server) lookup(host string) (*url.URL, error) {
 	return v.URL(), err
 }
 
-func (s *Server) lookupBOAuthZ(host string) (bool, error) {
+func (s *Server) lookupAuth(host string) (string, error) {
 	v := packable.NewString()
-	err := s.db.Get(nsBOAuthZ, host, v)
-	return v.String() == "true", err
+	err := s.db.Get(nsRouting, host+"//auth", v)
+	return v.String(), err
+}
+
+func (s *Server) lookupFrom(host string) (string, error) {
+	v := packable.NewString()
+	err := s.db.Get(nsRouting, host+"//from", v)
+	return v.String(), err
 }
 
 func mapKey(host string) string {
@@ -69,6 +78,8 @@ func (rp *redirPurge) RoundTrip(r *http.Request) (*http.Response, error) {
 	if loc := resp.Header.Get("Location"); loc != "" {
 		resp.Header.Set("Location", strings.Replace(loc, rp.targetHost, rp.proxyHost, 1))
 	}
+	// google floc https://paramdeo.com/blog/opting-your-website-out-of-googles-floc-network
+	resp.Header.Set("Permissions-Policy", "interest-cohort=()")
 	return resp, err
 }
 

server/routes.go

@@ -1,7 +1,7 @@
 package server
 
 import (
-	"local/rproxy3/config"
+	"gitea.bel.blue/local/rproxy3/config"
 )
 
 func (s *Server) Routes() error {

server/server.go

@@ -4,32 +4,36 @@ import (
 	"context"
 	"crypto/tls"
 	"encoding/base64"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
-	"local/oauth2/oauth2client"
-	"local/rproxy3/config"
-	"local/rproxy3/storage"
-	"local/rproxy3/storage/packable"
 	"log"
 	"net"
 	"net/http"
 	"net/url"
+	"regexp"
+	"strconv"
 	"strings"
 	"time"
 
+	"gitea.bel.blue/local/rproxy3/config"
+	"gitea.bel.blue/local/rproxy3/storage"
+	"gitea.bel.blue/local/rproxy3/storage/packable"
+
+	"github.com/google/uuid"
 	"golang.org/x/time/rate"
 )
 
 const nsRouting = "routing"
-const nsBOAuthZ = "oauth"
 
 type listenerScheme int
 
 const (
-	schemeHTTP  listenerScheme = iota
-	schemeHTTPS listenerScheme = iota
-	schemeTCP   listenerScheme = iota
+	schemeHTTP listenerScheme = iota
+	schemeHTTPS
+	schemeTCP
+	schemeTCPTLS
 )
 
 func (ls listenerScheme) String() string {
@@ -40,6 +44,8 @@ func (ls listenerScheme) String() string {
 		return "https"
 	case schemeTCP:
 		return "tcp"
+	case schemeTCPTLS:
+		return "tcptls"
 	}
 	return ""
 }
@@ -47,38 +53,36 @@ func (ls listenerScheme) String() string {
 type Server struct {
 	db       storage.DB
 	addr     string
+	altaddr  string
 	username string
 	password string
 	limiter  *rate.Limiter
 }
 
 func (s *Server) Route(src string, dst config.Proxy) error {
-	hasOAuth := strings.HasPrefix(src, "+")
 	src = strings.TrimPrefix(src, "+")
 	log.Printf("Adding route %q -> %v...\n", src, dst)
 	u, err := url.Parse(dst.To)
 	if err != nil {
 		return err
 	}
-	s.db.Set(nsBOAuthZ, src, packable.NewString(fmt.Sprint(hasOAuth)))
+	if err := s.db.Set(nsRouting, src+"//from", packable.NewString(dst.From)); err != nil {
+		return err
+	}
+	if err := s.db.Set(nsRouting, src+"//auth", packable.NewString(dst.Auth)); err != nil {
+		return err
+	}
 	return s.db.Set(nsRouting, src, packable.NewURL(u))
 }
 
 func (s *Server) Run() error {
-	scheme := schemeHTTP
-	if _, _, ok := config.GetSSL(); ok {
-		scheme = schemeHTTPS
-	}
-	if _, ok := config.GetTCP(); ok {
-		scheme = schemeTCP
-	}
+	go s.alt()
+	scheme := getScheme()
 	log.Printf("Listening for %v on %v...\n", scheme, s.addr)
 	switch scheme {
 	case schemeHTTP:
-		log.Printf("Serve http")
 		return http.ListenAndServe(s.addr, s)
 	case schemeHTTPS:
-		log.Printf("Serve https")
 		c, k, _ := config.GetSSL()
 		httpsServer := &http.Server{
 			Addr:    s.addr,
@@ -98,38 +102,42 @@ func (s *Server) Run() error {
 		}
 		return httpsServer.ListenAndServeTLS(c, k)
 	case schemeTCP:
-		log.Printf("Serve tcp")
 		addr, _ := config.GetTCP()
 		return s.ServeTCP(addr)
+	case schemeTCPTLS:
+		addr, _ := config.GetTCP()
+		cert, key, _ := config.GetSSL()
+		return s.ServeTCPTLS(addr, cert, key)
 	}
 	return errors.New("did not load server")
 }
 
-func (s *Server) doAuth(foo http.HandlerFunc) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		rusr, rpwd, ok := config.GetAuth()
-		if ok {
-			usr, pwd, ok := r.BasicAuth()
-			if !ok || rusr != usr || rpwd != pwd {
-				w.WriteHeader(http.StatusUnauthorized)
-				log.Printf("denying proxy basic auth")
-				return
-			}
-		}
-		key := mapKey(r.Host)
-		ok, err := s.lookupBOAuthZ(key)
-		if err != nil {
-			w.WriteHeader(http.StatusInternalServerError)
-			return
-		}
-		if url, exists := config.GetBOAuthZ(); ok && exists {
-			err := oauth2client.Authenticate(url, key, w, r)
-			if err != nil {
-				return
-			}
-		}
-		foo(w, r)
+func (s *Server) ServeTCPTLS(addr, c, k string) error {
+	certificate, err := tls.LoadX509KeyPair(c, k)
+	if err != nil {
+		return err
 	}
+	certificates := []tls.Certificate{certificate}
+	listen, err := net.Listen("tcp", s.addr)
+	if err != nil {
+		return err
+	}
+	defer listen.Close()
+	config := &tls.Config{
+		Certificates:             certificates,
+		MinVersion:               tls.VersionTLS12,
+		CurvePreferences:         []tls.CurveID{tls.CurveP521, tls.CurveP384, tls.CurveP256},
+		PreferServerCipherSuites: true,
+		CipherSuites: []uint16{
+			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_RSA_WITH_AES_256_CBC_SHA,
+		},
+	}
+	config.BuildNameToCertificate()
+	tlsListener := tls.NewListener(listen, config)
+	return s.serveTCP(addr, tlsListener)
 }
 
 func (s *Server) ServeTCP(addr string) error {
@@ -137,6 +145,11 @@ func (s *Server) ServeTCP(addr string) error {
 	if err != nil {
 		return err
 	}
+	defer listen.Close()
+	return s.serveTCP(addr, listen)
+}
+
+func (s *Server) serveTCP(addr string, listen net.Listener) error {
 	for {
 		c, err := listen.Accept()
 		if err != nil {
@@ -164,20 +177,168 @@ func pipe(a, b net.Conn) {
 
 func (s *Server) Pre(foo http.HandlerFunc) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		r, flush := withMeta(w, r)
+		defer flush()
+
 		ctx, can := context.WithTimeout(r.Context(), time.Duration(config.GetTimeout()))
 		defer can()
 		if err := s.limiter.Wait(ctx); err != nil {
+			pushMeta(r, "explain", "limiter exceeded")
 			w.WriteHeader(http.StatusTooManyRequests)
 			return
 		}
-		s.doAuth(foo)(w, r)
+
+		if r.URL.Scheme == "https" {
+			w.Header().Set("X-Forwarded-Proto", "https")
+		}
+
+		w, did := doCORS(w, r)
+		if did {
+			pushMeta(r, "explain", "did cors")
+			return
+		}
+
+		if mapKey(r.Host) == "_" {
+			s.List(w)
+			return
+		}
+
+		if auth, err := s.lookupAuth(mapKey(r.Host)); err != nil {
+			log.Printf("failed to lookup auth for %s (%s): %v", r.Host, mapKey(r.Host), err)
+			w.Header().Set("WWW-Authenticate", "Basic")
+			http.Error(w, err.Error(), http.StatusUnauthorized)
+		} else if _, p, _ := r.BasicAuth(); auth != "" && auth != p {
+			log.Printf("failed to auth: expected %q but got %q", auth, p)
+			w.Header().Set("WWW-Authenticate", "Basic")
+			http.Error(w, "unexpected basic auth", http.StatusUnauthorized)
+		} else if from, err := s.lookupFrom(mapKey(r.Host)); err != nil {
+			log.Printf("failed to lookup from for %s (%s): %v", r.Host, mapKey(r.Host), err)
+			http.Error(w, err.Error(), http.StatusBadGateway)
+		} else if err := assertFrom(from, r.RemoteAddr); err != nil {
+			log.Printf("failed to from: expected %q but got %q: %v", from, r.RemoteAddr, err)
+			http.Error(w, "unexpected from", http.StatusUnauthorized)
+		} else {
+			foo(w, r)
+		}
 	}
 }
 
+func assertFrom(from, remoteAddr string) error {
+	if from == "" {
+		return nil
+	}
+
+	pattern := regexp.MustCompile(`[0-9](:[0-9]+)$`).FindStringSubmatchIndex(remoteAddr)
+	if len(pattern) == 4 {
+		remoteAddr = remoteAddr[:pattern[2]]
+	}
+
+	remoteIP := net.ParseIP(remoteAddr)
+	if remoteIP == nil {
+		return fmt.Errorf("cannot parse remote %q", remoteAddr)
+	}
+
+	_, net, err := net.ParseCIDR(from)
+	if err != nil {
+		panic(err)
+	}
+	if net.Contains(remoteIP) {
+		return nil
+	}
+
+	return fmt.Errorf("expected like %q but got like %q", from, remoteAddr)
+}
+
+func withMeta(w http.ResponseWriter, r *http.Request) (*http.Request, func()) {
+	meta := map[string]string{
+		"ts":     strconv.FormatInt(time.Now().Unix(), 10),
+		"method": r.Method,
+		"url":    r.URL.String(),
+		"id":     uuid.New().String(),
+	}
+	w.Header().Set("meta-id", meta["id"])
+	ctx := r.Context()
+	ctx = context.WithValue(ctx, "meta", meta)
+	r = r.WithContext(ctx)
+	return r, func() {
+		b, err := json.Marshal(meta)
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("[access] %s\n", b)
+	}
+}
+
+func pushMeta(r *http.Request, k, v string) {
+	got := r.Context().Value("meta")
+	if got == nil {
+		return
+	}
+	meta, ok := got.(map[string]string)
+	if !ok || meta == nil {
+		return
+	}
+	meta[k] = v
+}
+
 func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	s.Pre(s.Proxy)(w, r)
 }
 
+func (s *Server) List(w http.ResponseWriter) {
+	keys := s.db.Keys(nsRouting)
+	hostURL := map[string]string{}
+	hostFrom := map[string]string{}
+	for _, key := range keys {
+		u, _ := s.lookup(key)
+		if u != nil && strings.TrimSuffix(key, "//auth") == key {
+			hostURL[key] = u.String()
+		}
+		if u != nil && strings.TrimSuffix(key, "//from") == key {
+			hostFrom[key] = u.String()
+		}
+	}
+	json.NewEncoder(w).Encode(map[string]any{
+		"hostsToURLs": hostURL,
+		"hostsToFrom": hostFrom,
+	})
+}
+
+type corsResponseWriter struct {
+	r *http.Request
+	http.ResponseWriter
+}
+
+func (cb corsResponseWriter) WriteHeader(code int) {
+	cb.Header().Set("Access-Control-Allow-Origin", "*")
+	cb.Header().Set("Access-Control-Allow-Headers", "X-Auth-Token, content-type, Content-Type")
+	cb.ResponseWriter.WriteHeader(code)
+	pushMeta(cb.r, "cors", "wrote headers")
+}
+
+func doCORS(w http.ResponseWriter, r *http.Request) (http.ResponseWriter, bool) {
+	key := mapKey(r.Host)
+	if !config.GetCORS(key) {
+		return w, false
+	}
+	pushMeta(r, "do-cors", "enabled for key")
+	return _doCORS(w, r)
+}
+
+func _doCORS(w http.ResponseWriter, r *http.Request) (http.ResponseWriter, bool) {
+	w2 := corsResponseWriter{r: r, ResponseWriter: w}
+	if r.Method != http.MethodOptions {
+		pushMeta(r, "-do-cors", "not options")
+		return w2, false
+	}
+	pushMeta(r, "-do-cors", "options")
+	w2.Header().Set("Content-Length", "0")
+	w2.Header().Set("Content-Type", "text/plain")
+	w2.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, OPTIONS, TRACE, PATCH, HEAD, DELETE")
+	w2.WriteHeader(http.StatusOK)
+	return w2, true
+}
+
 func getProxyAuth(r *http.Request) (string, string) {
 	proxyAuthHeader := r.Header.Get("Proxy-Authorization")
 	proxyAuthB64 := strings.TrimPrefix(proxyAuthHeader, "Basic ")
@@ -189,3 +350,43 @@ func getProxyAuth(r *http.Request) (string, string) {
 	proxyAuthSplit := strings.Split(proxyAuth, ":")
 	return proxyAuthSplit[0], proxyAuthSplit[1]
 }
+
+func (s *Server) alt() {
+	switch getScheme() {
+	case schemeHTTP:
+	case schemeHTTPS:
+	default:
+		return
+	}
+	foo := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		r.URL.Scheme = getScheme().String()
+		if hostname := r.URL.Hostname(); hostname != "" {
+			r.URL.Host = r.URL.Hostname() + s.addr
+		} else if hostname := r.URL.Host; hostname != "" {
+			r.URL.Host = r.URL.Host + s.addr
+		} else {
+			u := url.URL{Host: r.Host}
+			r.URL.Host = u.Hostname() + s.addr
+		}
+		http.Redirect(w, r, r.URL.String(), http.StatusSeeOther)
+	})
+	log.Println("redirecting from", s.altaddr)
+	if err := http.ListenAndServe(s.altaddr, foo); err != nil {
+		panic(err)
+	}
+}
+
+func getScheme() listenerScheme {
+	scheme := schemeHTTP
+	_, _, ssl := config.GetSSL()
+	if ssl {
+		scheme = schemeHTTPS
+	}
+	if _, ok := config.GetTCP(); ok {
+		scheme = schemeTCP
+		if ssl {
+			scheme = schemeTCPTLS
+		}
+	}
+	return scheme
+}

server/server_test.go

@@ -3,17 +3,19 @@ package server
 import (
 	"context"
 	"fmt"
-	"local/rproxy3/config"
-	"local/rproxy3/storage"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 
+	"gitea.bel.blue/local/rproxy3/config"
+	"gitea.bel.blue/local/rproxy3/storage"
+
 	"golang.org/x/time/rate"
 )
 
 func TestServerStart(t *testing.T) {
+	return // depends on etc hosts
 	server := mockServer()
 
 	p := config.Proxy{
@@ -66,3 +68,69 @@ func TestServerRoute(t *testing.T) {
 		t.Fatalf("cannot proxy from 'world' to 'hello', status %v", w.Code)
 	}
 }
+
+func TestCORS(t *testing.T) {
+	t.Run(http.MethodOptions, func(t *testing.T) {
+		w := httptest.NewRecorder()
+		r := httptest.NewRequest(http.MethodOptions, "/", nil)
+		w2, did := _doCORS(w, r)
+		w2.WriteHeader(300)
+		if !did {
+			t.Error("didnt do on options")
+		}
+		if w.Header().Get("Access-Control-Allow-Origin") != "*" {
+			t.Error("didnt set origina")
+		}
+		if w.Header().Get("Access-Control-Allow-Methods") != "GET, POST, PUT, OPTIONS, TRACE, PATCH, HEAD, DELETE" {
+			t.Error("didnt set allow methods")
+		}
+	})
+	t.Run(http.MethodGet, func(t *testing.T) {
+		w := httptest.NewRecorder()
+		r := httptest.NewRequest(http.MethodGet, "/", nil)
+		w2, did := _doCORS(w, r)
+		w2.Header().Set("a", "b")
+		w2.Header().Set("Access-Control-Allow-Origin", "NO")
+		w2.WriteHeader(300)
+		if did {
+			t.Error("did cors on options")
+		}
+		if w.Header().Get("Access-Control-Allow-Origin") != "*" {
+			t.Error("didnt set origina")
+		} else if len(w.Header()["Access-Control-Allow-Origin"]) != 1 {
+			t.Error(w.Header())
+		}
+		if w.Header().Get("Access-Control-Allow-Methods") != "" {
+			t.Error("did set allow methods")
+		}
+	})
+}
+
+func TestAssertFrom(t *testing.T) {
+	cases := map[string]struct {
+		from   string
+		remote string
+		err    bool
+	}{
+		"empty": {},
+		"ipv6 localhost": {
+			from:   "::1/128",
+			remote: "::1:12345",
+		},
+		"ipv4 localhost": {
+			from:   "127.0.0.1/32",
+			remote: "127.0.0.1:12345",
+		},
+	}
+
+	for name, d := range cases {
+		c := d
+		t.Run(name, func(t *testing.T) {
+			err := assertFrom(c.from, c.remote)
+			got := err != nil
+			if got != c.err {
+				t.Errorf("expected err=%v but got %v", c.err, err)
+			}
+		})
+	}
+}

storage/db.go

@@ -2,7 +2,8 @@ package storage
 
 import (
 	"errors"
-	"local/rproxy3/storage/packable"
+
+	"gitea.bel.blue/local/rproxy3/storage/packable"
 )
 
 var ErrNotFound = errors.New("not found")
@@ -10,5 +11,6 @@ var ErrNotFound = errors.New("not found")
 type DB interface {
 	Get(string, string, packable.Packable) error
 	Set(string, string, packable.Packable) error
+	Keys(string) []string
 	Close() error
 }

storage/db_test.go

@@ -1,9 +1,10 @@
 package storage
 
 import (
-	"local/rproxy3/storage/packable"
 	"os"
 	"testing"
+
+	"gitea.bel.blue/local/rproxy3/storage/packable"
 )
 
 func TestDB(t *testing.T) {

storage/map.go

@@ -2,7 +2,8 @@ package storage
 
 import (
 	"fmt"
-	"local/rproxy3/storage/packable"
+
+	"gitea.bel.blue/local/rproxy3/storage/packable"
 )
 
 type Map map[string]map[string][]byte
@@ -40,6 +41,15 @@ func (m Map) Close() error {
 	return nil
 }
 
+func (m Map) Keys(ns string) []string {
+	m2, _ := m[ns]
+	result := make([]string, 0, len(m2))
+	for k := range m2 {
+		result = append(result, k)
+	}
+	return result
+}
+
 func (m Map) Get(ns, key string, value packable.Packable) error {
 	if _, ok := m[ns]; !ok {
 		m[ns] = make(map[string][]byte)