Write lots of tests

certs/certs.go

@@ -121,6 +121,10 @@ func (c *Certs) Compile() {
 // internalCompile is a hidden internal method for loading the certificate and
 // key files
 func (c *Certs) internalCompile(m map[string]*tls.Certificate) error {
+	if c.cDir == nil {
+		return nil
+	}
+
 	// try to read dir
 	files, err := fs.ReadDir(c.cDir, "")
 	if err != nil {

cmd/violet/main.go

@@ -33,6 +33,7 @@ var (
 	httpListen    = flag.String("http", "0.0.0.0:80", "address for http listening")
 	httpsListen   = flag.String("https", "0.0.0.0:443", "address for https listening")
 	inkscapeCmd   = flag.String("inkscape", "inkscape", "Path to inkscape binary")
+	rateLimit     = flag.Uint64("ratelimit", 300, "Rate limit (max requests per minute)")
 )
 
 func main() {
@@ -61,6 +62,7 @@ func main() {
 	}
 
 	allowedDomains := domains.New(db)                                               // load allowed domains
+	acmeChallenges := utils.NewAcmeChallenge()                                      // load acme challenge store
 	allowedCerts := certs.New(os.DirFS(*certPath), os.DirFS(*keyPath), *selfSigned) // load certificate manager
 	reverseProxy := proxy.NewHybridTransport()                                      // load reverse proxy
 	dynamicFavicons := favicons.New(db, *inkscapeCmd)                               // load dynamic favicon provider
@@ -72,8 +74,10 @@ func main() {
 		ApiListen:   *apiListen,
 		HttpListen:  *httpListen,
 		HttpsListen: *httpsListen,
+		RateLimit:   *rateLimit,
 		DB:          db,
 		Domains:     allowedDomains,
+		Acme:        acmeChallenges,
 		Certs:       allowedCerts,
 		Favicons:    dynamicFavicons,
 		Verify:      nil, // TODO: add mjwt verify support
@@ -84,12 +88,18 @@ func main() {
 	var srvApi, srvHttp, srvHttps *http.Server
 	if *apiListen != "" {
 		srvApi = servers.NewApiServer(srvConf, utils.MultiCompilable{allowedDomains, allowedCerts, dynamicFavicons, dynamicErrorPages, dynamicRouter})
+		log.Printf("[API] Starting API server on: '%s'\n", srvApi.Addr)
+		go utils.RunBackgroundHttp("API", srvApi)
 	}
 	if *httpListen != "" {
 		srvHttp = servers.NewHttpServer(srvConf)
+		log.Printf("[HTTP] Starting HTTP server on: '%s'\n", srvHttp.Addr)
+		go utils.RunBackgroundHttp("HTTP", srvHttp)
 	}
 	if *httpsListen != "" {
 		srvHttps = servers.NewHttpsServer(srvConf)
+		log.Printf("[HTTPS] Starting HTTPS server on: '%s'\n", srvHttps.Addr)
+		go utils.RunBackgroundHttps("HTTPS", srvHttps)
 	}
 
 	// Wait for exit signal

error-pages/error-pages.go

@@ -82,7 +82,7 @@ func (e *ErrorPages) Compile() {
 
 func (e *ErrorPages) internalCompile(m map[int]func(rw http.ResponseWriter)) error {
 	// try to read dir
-	files, err := fs.ReadDir(e.dir, "")
+	files, err := fs.ReadDir(e.dir, ".")
 	if err != nil {
 		return fmt.Errorf("failed to read error pages dir: %w", err)
 	}
@@ -101,7 +101,7 @@ func (e *ErrorPages) internalCompile(m map[int]func(rw http.ResponseWriter)) err
 		ext := filepath.Ext(name)
 
 		// if the extension is not 'html' then ignore the file
-		if ext != "html" {
+		if ext != ".html" {
 			log.Printf("[ErrorPages] WARNING: ignoring non '.html' file in error pages directory: '%s'\n", name)
 			continue
 		}

error-pages/error-pages_test.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"testing"
+	"testing/fstest"
 )
 
 func TestErrorPages_ServeError(t *testing.T) {
@@ -29,3 +30,35 @@ func TestErrorPages_ServeError(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, "469 Unknown Error Code\n\n", string(a))
 }
+
+func TestErrorPagesWithCustom(t *testing.T) {
+	fs := fstest.MapFS{
+		"418.html": {
+			Data: []byte("418 Custom Error Page\n"),
+		},
+		"469.html": {
+			Data: []byte("469 Custom Error Page\n"),
+		},
+	}
+
+	errorPages := New(fs)
+	assert.NoError(t, errorPages.internalCompile(errorPages.m))
+
+	rec := httptest.NewRecorder()
+	errorPages.ServeError(rec, http.StatusTeapot)
+	res := rec.Result()
+	assert.Equal(t, http.StatusTeapot, res.StatusCode)
+	assert.Equal(t, "418 I'm a teapot", res.Status)
+	a, err := io.ReadAll(res.Body)
+	assert.NoError(t, err)
+	assert.Equal(t, "418 Custom Error Page\n", string(a))
+
+	rec = httptest.NewRecorder()
+	errorPages.ServeError(rec, 469)
+	res = rec.Result()
+	assert.Equal(t, 469, res.StatusCode)
+	assert.Equal(t, "469 ", res.Status)
+	a, err = io.ReadAll(res.Body)
+	assert.NoError(t, err)
+	assert.Equal(t, "469 Custom Error Page\n", string(a))
+}

servers/api.go

@@ -5,7 +5,6 @@ import (
 	"github.com/MrMelon54/violet/utils"
 	"github.com/julienschmidt/httprouter"
 	"github.com/mrmelon54/mjwt"
-	"log"
 	"net/http"
 	"time"
 )
@@ -19,22 +18,7 @@ func NewApiServer(conf *Conf, compileTarget utils.MultiCompilable) *http.Server
 
 	// Endpoint for compile action
 	r.POST("/compile", func(rw http.ResponseWriter, req *http.Request, _ httprouter.Params) {
-		// Get bearer token
-		bearer := utils.GetBearer(req)
-		if bearer == "" {
-			utils.RespondHttpStatus(rw, http.StatusForbidden)
-			return
-		}
-
-		// Read claims from mjwt
-		_, b, err := mjwt.ExtractClaims[auth.AccessTokenClaims](conf.Verify, bearer)
-		if err != nil {
-			utils.RespondHttpStatus(rw, http.StatusForbidden)
-			return
-		}
-
-		// Token must have `violet:compile` perm
-		if !b.Claims.Perms.Has("violet:compile") {
+		if !hasPerms(conf.Verify, req, "violet:compile") {
 			utils.RespondHttpStatus(rw, http.StatusForbidden)
 			return
 		}
@@ -44,8 +28,36 @@ func NewApiServer(conf *Conf, compileTarget utils.MultiCompilable) *http.Server
 		rw.WriteHeader(http.StatusAccepted)
 	})
 
+	// Endpoint for acme-challenge
+	r.PUT("/acme-challenge/:domain/:key/:value", func(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
+		if !hasPerms(conf.Verify, req, "violet:acme-challenge") {
+			utils.RespondHttpStatus(rw, http.StatusForbidden)
+			return
+		}
+		domain := params.ByName("domain")
+		if !conf.Domains.IsValid(domain) {
+			utils.RespondVioletError(rw, http.StatusBadRequest, "Invalid ACME challenge domain")
+			return
+		}
+		conf.Acme.Put(domain, params.ByName("key"), params.ByName("value"))
+		rw.WriteHeader(http.StatusAccepted)
+	})
+	r.DELETE("/acme-challenge/:domain/:key", func(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
+		if !hasPerms(conf.Verify, req, "violet:acme-challenge") {
+			utils.RespondHttpStatus(rw, http.StatusForbidden)
+			return
+		}
+		domain := params.ByName("domain")
+		if !conf.Domains.IsValid(domain) {
+			utils.RespondVioletError(rw, http.StatusBadRequest, "Invalid ACME challenge domain")
+			return
+		}
+		conf.Acme.Delete(domain, params.ByName("key"))
+		rw.WriteHeader(http.StatusAccepted)
+	})
+
 	// Create and run http server
-	s := &http.Server{
+	return &http.Server{
 		Addr:              conf.ApiListen,
 		Handler:           r,
 		ReadTimeout:       time.Minute,
@@ -54,7 +66,21 @@ func NewApiServer(conf *Conf, compileTarget utils.MultiCompilable) *http.Server
 		IdleTimeout:       time.Minute,
 		MaxHeaderBytes:    2500,
 	}
-	log.Printf("[API] Starting API server on: '%s'\n", s.Addr)
-	go utils.RunBackgroundHttp("API", s)
-	return s
+}
+
+func hasPerms(verify mjwt.Provider, req *http.Request, perm string) bool {
+	// Get bearer token
+	bearer := utils.GetBearer(req)
+	if bearer == "" {
+		return false
+	}
+
+	// Read claims from mjwt
+	_, b, err := mjwt.ExtractClaims[auth.AccessTokenClaims](verify, bearer)
+	if err != nil {
+		return false
+	}
+
+	// Token must have perm
+	return b.Claims.Perms.Has(perm)
 }

servers/api_test.go

@@ -0,0 +1,164 @@
+package servers
+
+import (
+	"code.mrmelon54.com/melon/summer-utils/claims"
+	"code.mrmelon54.com/melon/summer-utils/claims/auth"
+	"crypto/rand"
+	"crypto/rsa"
+	"github.com/MrMelon54/violet/utils"
+	"github.com/mrmelon54/mjwt"
+	"github.com/stretchr/testify/assert"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+)
+
+var snakeOilProv = genSnakeOilProv()
+
+type fakeDomains struct{}
+
+func (f *fakeDomains) IsValid(host string) bool { return host == "example.com" }
+
+func genSnakeOilProv() mjwt.Provider {
+	key, err := rsa.GenerateKey(rand.Reader, 1024)
+	if err != nil {
+		panic(err)
+	}
+	return mjwt.NewMJwtSigner("violet.test", key)
+}
+
+func genSnakeOilKey(perm string) string {
+	p := claims.NewPermStorage()
+	p.Set(perm)
+	val, err := snakeOilProv.GenerateJwt("abc", "abc", 5*time.Minute, auth.AccessTokenClaims{
+		UserId: 1,
+		Perms:  p,
+	})
+	if err != nil {
+		panic(err)
+	}
+	return val
+}
+
+type fakeCompilable struct{ done bool }
+
+func (f *fakeCompilable) Compile() { f.done = true }
+
+var _ utils.Compilable = &fakeCompilable{}
+
+func TestNewApiServer_Compile(t *testing.T) {
+	apiConf := &Conf{
+		Domains: &fakeDomains{},
+		Acme:    utils.NewAcmeChallenge(),
+		Verify:  snakeOilProv,
+	}
+	f := &fakeCompilable{}
+	srv := NewApiServer(apiConf, utils.MultiCompilable{f})
+
+	req, err := http.NewRequest(http.MethodPost, "https://example.com/compile", nil)
+	assert.NoError(t, err)
+
+	rec := httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res := rec.Result()
+	assert.Equal(t, http.StatusForbidden, res.StatusCode)
+	assert.False(t, f.done)
+
+	req.Header.Set("Authorization", "Bearer "+genSnakeOilKey("violet:compile"))
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusAccepted, res.StatusCode)
+	assert.True(t, f.done)
+}
+
+func TestNewApiServer_AcmeChallenge_Put(t *testing.T) {
+	apiConf := &Conf{
+		Domains: &fakeDomains{},
+		Acme:    utils.NewAcmeChallenge(),
+		Verify:  snakeOilProv,
+	}
+	srv := NewApiServer(apiConf, utils.MultiCompilable{})
+	acmeKey := genSnakeOilKey("violet:acme-challenge")
+
+	// Valid domain
+	req, err := http.NewRequest(http.MethodPut, "https://example.com/acme-challenge/example.com/123/123abc", nil)
+	assert.NoError(t, err)
+
+	rec := httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res := rec.Result()
+	assert.Equal(t, http.StatusForbidden, res.StatusCode)
+
+	req.Header.Set("Authorization", "Bearer "+acmeKey)
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusAccepted, res.StatusCode)
+	assert.Equal(t, "123abc", apiConf.Acme.Get("example.com", "123"))
+
+	// Invalid domain
+	req, err = http.NewRequest(http.MethodPut, "https://example.com/acme-challenge/notexample.com/123/123abc", nil)
+	assert.NoError(t, err)
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusForbidden, res.StatusCode)
+
+	req.Header.Set("Authorization", "Bearer "+acmeKey)
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusBadRequest, res.StatusCode)
+	assert.Equal(t, "Invalid ACME challenge domain", res.Header.Get("X-Violet-Error"))
+}
+
+func TestNewApiServer_AcmeChallenge_Delete(t *testing.T) {
+	apiConf := &Conf{
+		Domains: &fakeDomains{},
+		Acme:    utils.NewAcmeChallenge(),
+		Verify:  snakeOilProv,
+	}
+	srv := NewApiServer(apiConf, utils.MultiCompilable{})
+	acmeKey := genSnakeOilKey("violet:acme-challenge")
+
+	// Valid domain
+	req, err := http.NewRequest(http.MethodDelete, "https://example.com/acme-challenge/example.com/123", nil)
+	assert.NoError(t, err)
+
+	rec := httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res := rec.Result()
+	assert.Equal(t, http.StatusForbidden, res.StatusCode)
+
+	req.Header.Set("Authorization", "Bearer "+acmeKey)
+	apiConf.Acme.Put("example.com", "123", "123abc")
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusAccepted, res.StatusCode)
+	assert.Equal(t, "", apiConf.Acme.Get("example.com", "123"))
+
+	// Invalid domain
+	req, err = http.NewRequest(http.MethodDelete, "https://example.com/acme-challenge/notexample.com/123", nil)
+	assert.NoError(t, err)
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusForbidden, res.StatusCode)
+
+	req.Header.Set("Authorization", "Bearer "+acmeKey)
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusBadRequest, res.StatusCode)
+	assert.Equal(t, "Invalid ACME challenge domain", res.Header.Get("X-Violet-Error"))
+}

servers/conf.go

@@ -1,9 +1,8 @@
 package servers
 
 import (
+	"crypto/tls"
 	"database/sql"
-	"github.com/MrMelon54/violet/certs"
-	"github.com/MrMelon54/violet/domains"
 	errorPages "github.com/MrMelon54/violet/error-pages"
 	"github.com/MrMelon54/violet/favicons"
 	"github.com/MrMelon54/violet/router"
@@ -15,11 +14,27 @@ type Conf struct {
 	ApiListen   string // api server listen address
 	HttpListen  string // http server listen address
 	HttpsListen string // https server listen address
+	RateLimit   uint64 // rate limit per minute
 	DB          *sql.DB
-	Domains     *domains.Domains
-	Certs       *certs.Certs
+	Domains     DomainProvider
+	Acme        AcmeChallengeProvider
+	Certs       CertProvider
 	Favicons    *favicons.Favicons
 	Verify      mjwt.Provider
 	ErrorPages  *errorPages.ErrorPages
 	Router      *router.Manager
 }
+
+type DomainProvider interface {
+	IsValid(host string) bool
+}
+
+type AcmeChallengeProvider interface {
+	Get(domain, key string) string
+	Put(domain, key, value string)
+	Delete(domain, key string)
+}
+
+type CertProvider interface {
+	GetCertForDomain(domain string) *tls.Certificate
+}

servers/http.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"github.com/MrMelon54/violet/utils"
 	"github.com/julienschmidt/httprouter"
-	"log"
 	"net/http"
 	"net/url"
 	"time"
@@ -27,47 +26,30 @@ func NewHttpServer(conf *Conf) *http.Server {
 	}
 
 	// Endpoint for acme challenge outputs
-	r.GET("/.well-known/acme-challenge/{key}", func(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
-		if h, ok := utils.GetDomainWithoutPort(req.Host); ok {
+	r.GET("/.well-known/acme-challenge/:key", func(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
+		h := utils.GetDomainWithoutPort(req.Host)
+
 		// check if the host is valid
 		if !conf.Domains.IsValid(req.Host) {
-				http.Error(rw, fmt.Sprintf("%d %s\n", 420, "Invalid host"), 420)
+			utils.RespondVioletError(rw, http.StatusBadRequest, "Invalid host")
 			return
 		}
 
 		// check if the key is valid
-			key := params.ByName("key")
-			if key == "" {
+		value := conf.Acme.Get(h, params.ByName("key"))
+		if value == "" {
 			rw.WriteHeader(http.StatusNotFound)
 			return
 		}
 
-			// prepare for executing query
-			prepare, err := conf.DB.Prepare("select value from acme_challenges limit 1 where domain = ? and key = ?")
-			if err != nil {
-				utils.RespondHttpStatus(rw, http.StatusInternalServerError)
-				return
-			}
-
-			// query the row and extract the value
-			row := prepare.QueryRow(h, key)
-			var value string
-			err = row.Scan(&value)
-			if err != nil {
-				utils.RespondHttpStatus(rw, http.StatusInternalServerError)
-				return
-			}
-
 		// output response
 		rw.WriteHeader(http.StatusOK)
 		_, _ = rw.Write([]byte(value))
-		}
-		rw.WriteHeader(http.StatusNotFound)
 	})
 
 	// All other paths lead here and are forwarded to HTTPS
 	r.NotFound = http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
-		if h, ok := utils.GetDomainWithoutPort(req.Host); ok {
+		h := utils.GetDomainWithoutPort(req.Host)
 		u := &url.URL{
 			Scheme:   "https",
 			Host:     h + secureExtend,
@@ -76,11 +58,10 @@ func NewHttpServer(conf *Conf) *http.Server {
 			RawQuery: req.URL.RawQuery,
 		}
 		utils.FastRedirect(rw, req, u.String(), http.StatusPermanentRedirect)
-		}
 	})
 
 	// Create and run http server
-	s := &http.Server{
+	return &http.Server{
 		Addr:              conf.HttpListen,
 		Handler:           r,
 		ReadTimeout:       time.Minute,
@@ -89,7 +70,4 @@ func NewHttpServer(conf *Conf) *http.Server {
 		IdleTimeout:       time.Minute,
 		MaxHeaderBytes:    2500,
 	}
-	log.Printf("[HTTP] Starting HTTP server on: '%s'\n", s.Addr)
-	go utils.RunBackgroundHttp("HTTP", s)
-	return s
 }

servers/http_test.go

@@ -0,0 +1,46 @@
+package servers
+
+import (
+	"bytes"
+	"github.com/MrMelon54/violet/utils"
+	"github.com/stretchr/testify/assert"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestNewHttpServer_AcmeChallenge(t *testing.T) {
+	httpConf := &Conf{
+		Domains: &fakeDomains{},
+		Acme:    utils.NewAcmeChallenge(),
+		Verify:  snakeOilProv,
+	}
+	srv := NewHttpServer(httpConf)
+	httpConf.Acme.Put("example.com", "456", "456def")
+
+	req, err := http.NewRequest(http.MethodGet, "https://example.com/.well-known/acme-challenge/456", nil)
+	assert.NoError(t, err)
+
+	rec := httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res := rec.Result()
+	assert.Equal(t, http.StatusOK, res.StatusCode)
+
+	all, err := io.ReadAll(res.Body)
+	assert.NoError(t, err)
+	assert.Equal(t, 0, bytes.Compare([]byte("456def"), all))
+
+	// Invalid key
+	req, err = http.NewRequest(http.MethodGet, "https://example.com/.well-known/acme-challenge/789", nil)
+	assert.NoError(t, err)
+
+	rec = httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res = rec.Result()
+	assert.Equal(t, http.StatusNotFound, res.StatusCode)
+
+	all, err = io.ReadAll(res.Body)
+	assert.NoError(t, err)
+	assert.Equal(t, 0, bytes.Compare([]byte(""), all))
+}

servers/https.go

@@ -16,10 +16,9 @@ import (
 // NewHttpsServer creates and runs a http server containing the public https
 // endpoints for the reverse proxy.
 func NewHttpsServer(conf *Conf) *http.Server {
-	s := &http.Server{
+	return &http.Server{
 		Addr:    conf.HttpsListen,
-		Handler:                      setupRateLimiter(300, setupFaviconMiddleware(conf.Favicons, conf.Router)),
-		DisableGeneralOptionsHandler: false,
+		Handler: setupRateLimiter(conf.RateLimit, setupFaviconMiddleware(conf.Favicons, conf.Router)),
 		TLSConfig: &tls.Config{GetCertificate: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
 			// error out on invalid domains
 			if !conf.Domains.IsValid(info.ServerName) {
@@ -41,12 +40,9 @@ func NewHttpsServer(conf *Conf) *http.Server {
 		IdleTimeout:       150 * time.Second,
 		MaxHeaderBytes:    4096000,
 		ConnState: func(conn net.Conn, state http.ConnState) {
-			fmt.Printf("%s => %s: %s\n", conn.LocalAddr(), conn.RemoteAddr(), state.String())
+			fmt.Printf("[HTTPS] %s => %s: %s\n", conn.LocalAddr(), conn.RemoteAddr(), state.String())
 		},
 	}
-	log.Printf("[HTTPS] Starting HTTPS server on: '%s'\n", s.Addr)
-	go utils.RunBackgroundHttps("HTTPS", s)
-	return s
 }
 
 // setupRateLimiter is an internal function to create a middleware to manage

servers/https_test.go

@@ -0,0 +1,59 @@
+package servers
+
+import (
+	"database/sql"
+	"github.com/MrMelon54/violet/certs"
+	"github.com/MrMelon54/violet/proxy"
+	"github.com/MrMelon54/violet/router"
+	_ "github.com/mattn/go-sqlite3"
+	"github.com/stretchr/testify/assert"
+	"net/http"
+	"net/http/httptest"
+	"sync"
+	"testing"
+)
+
+type fakeTransport struct{}
+
+func (f *fakeTransport) RoundTrip(_ *http.Request) (*http.Response, error) {
+	rec := httptest.NewRecorder()
+	rec.WriteHeader(http.StatusOK)
+	return rec.Result(), nil
+}
+
+func TestNewHttpsServer_RateLimit(t *testing.T) {
+	db, err := sql.Open("sqlite3", "file::memory:?cache=shared")
+	assert.NoError(t, err)
+
+	ft := &fakeTransport{}
+	httpsConf := &Conf{
+		RateLimit: 5,
+		Domains:   &fakeDomains{},
+		Certs:     certs.New(nil, nil, true),
+		Verify:    snakeOilProv,
+		Router:    router.NewManager(db, proxy.NewHybridTransportWithCalls(ft, ft)),
+	}
+	srv := NewHttpsServer(httpsConf)
+
+	req, err := http.NewRequest(http.MethodGet, "https://example.com", nil)
+	req.RemoteAddr = "127.0.0.1:1447"
+	assert.NoError(t, err)
+
+	wg := &sync.WaitGroup{}
+	wg.Add(5)
+	for i := 0; i < 5; i++ {
+		go func() {
+			defer wg.Done()
+			rec := httptest.NewRecorder()
+			srv.Handler.ServeHTTP(rec, req)
+			res := rec.Result()
+			assert.Equal(t, http.StatusOK, res.StatusCode)
+		}()
+	}
+	wg.Wait()
+
+	rec := httptest.NewRecorder()
+	srv.Handler.ServeHTTP(rec, req)
+	res := rec.Result()
+	assert.Equal(t, http.StatusTooManyRequests, res.StatusCode)
+}

utils/acme-challenges.go

@@ -0,0 +1,55 @@
+package utils
+
+import "sync"
+
+type AcmeChallenges struct {
+	s *sync.RWMutex
+	d map[string]*AcmeStorage
+}
+
+type AcmeStorage struct {
+	s *sync.RWMutex
+	v map[string]string
+}
+
+func NewAcmeChallenge() *AcmeChallenges {
+	return &AcmeChallenges{
+		s: &sync.RWMutex{},
+		d: make(map[string]*AcmeStorage),
+	}
+}
+
+func (a *AcmeChallenges) Get(domain, key string) string {
+	a.s.RLock()
+	defer a.s.RUnlock()
+	if m := a.d[domain]; m != nil {
+		m.s.RLock()
+		defer m.s.RUnlock()
+		return m.v[key]
+	}
+	return ""
+}
+
+func (a *AcmeChallenges) Put(domain, key, value string) {
+	a.s.Lock()
+	m := a.d[domain]
+	if m == nil {
+		m = &AcmeStorage{
+			s: &sync.RWMutex{},
+			v: make(map[string]string),
+		}
+		a.d[domain] = m
+	}
+	m.s.Lock()
+	m.v[key] = value
+	m.s.Unlock()
+	a.s.Unlock()
+}
+
+func (a *AcmeChallenges) Delete(domain, key string) {
+	a.s.Lock()
+	if m := a.d[domain]; m != nil {
+		delete(m.v, key)
+	}
+	a.s.Unlock()
+}

utils/acme-challenges_test.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestAcmeChallenges(t *testing.T) {
+	a := NewAcmeChallenge()
+	assert.Equal(t, "", a.Get("example.com", "123"))
+
+	// The challenge should be created
+	a.Put("example.com", "123", "123abc")
+	assert.Equal(t, "123abc", a.Get("example.com", "123"))
+
+	// The challenge should be deleted
+	a.Delete("example.com", "123")
+	assert.Equal(t, "", a.Get("example.com", "123"))
+
+	// This should not crash or stop execution
+	a.Delete("example.com", "123")
+	assert.Equal(t, "", a.Get("example.com", "123"))
+
+	// This should not crash or stop execution
+	a.Delete("www.example.com", "123")
+	assert.Equal(t, "", a.Get("example.com", "123"))
+}

utils/domain-utils.go

@@ -27,13 +27,13 @@ func SplitDomainPort(host string, defaultPort int) (domain string, port int, ok
 // without the port.
 //
 // example.com:443 => example.com
-func GetDomainWithoutPort(domain string) (string, bool) {
+func GetDomainWithoutPort(domain string) string {
 	// if a valid index isn't found then return false
 	n := strings.LastIndexByte(domain, ':')
 	if n == -1 {
-		return "", false
+		return domain
 	}
-	return domain[:n], true
+	return domain[:n]
 }
 
 // ReplaceSubdomainWithWildcard returns the domain with the subdomain replaced

utils/domain-utils_test.go

@@ -18,12 +18,16 @@ func TestSplitDomainPort(t *testing.T) {
 }
 
 func TestDomainWithoutPort(t *testing.T) {
-	domain, ok := GetDomainWithoutPort("www.example.com:5612")
-	assert.True(t, ok, "Output should be true")
+	domain := GetDomainWithoutPort("www.example.com:5612")
 	assert.Equal(t, "www.example.com", domain)
 
-	domain, ok = GetDomainWithoutPort("example.com:443")
-	assert.True(t, ok, "Output should be true")
+	domain = GetDomainWithoutPort("example.com:443")
+	assert.Equal(t, "example.com", domain)
+
+	domain = GetDomainWithoutPort("www.example.com")
+	assert.Equal(t, "www.example.com", domain)
+
+	domain = GetDomainWithoutPort("example.com")
 	assert.Equal(t, "example.com", domain)
 }
 

utils/multi-compilable_test.go

@@ -0,0 +1,22 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+type fakeCompile struct{ done bool }
+
+func (f *fakeCompile) Compile() {
+	f.done = true
+}
+
+var _ Compilable = &fakeCompile{}
+
+func TestMultiCompilable_Compile(t *testing.T) {
+	f := &fakeCompile{}
+	a := MultiCompilable{f}
+	assert.False(t, f.done)
+	a.Compile()
+	assert.True(t, f.done)
+}

utils/response_test.go

@@ -0,0 +1,32 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestRespondHttpStatus(t *testing.T) {
+	rec := httptest.NewRecorder()
+	RespondHttpStatus(rec, http.StatusTeapot)
+	res := rec.Result()
+	assert.Equal(t, http.StatusTeapot, res.StatusCode)
+	assert.Equal(t, "418 I'm a teapot", res.Status)
+	a, err := io.ReadAll(res.Body)
+	assert.NoError(t, err)
+	assert.Equal(t, "418 I'm a teapot\n\n", string(a))
+}
+
+func TestRespondVioletError(t *testing.T) {
+	rec := httptest.NewRecorder()
+	RespondVioletError(rec, http.StatusTeapot, "Hidden Error Message")
+	res := rec.Result()
+	assert.Equal(t, http.StatusTeapot, res.StatusCode)
+	assert.Equal(t, "418 I'm a teapot", res.Status)
+	a, err := io.ReadAll(res.Body)
+	assert.NoError(t, err)
+	assert.Equal(t, "418 I'm a teapot\n\n", string(a))
+	assert.Equal(t, "Hidden Error Message", res.Header.Get("X-Violet-Error"))
+}

utils/server-utils_test.go

@@ -0,0 +1,20 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"net/http"
+	"testing"
+)
+
+func TestGetBearer(t *testing.T) {
+	req, err := http.NewRequest(http.MethodPost, "https://example.com", nil)
+	assert.NoError(t, err)
+	req.Header.Set("Authorization", "Bearer abc")
+	assert.Equal(t, "abc", GetBearer(req))
+}
+
+func TestGetBearer_Empty(t *testing.T) {
+	req, err := http.NewRequest(http.MethodPost, "https://example.com", nil)
+	assert.NoError(t, err)
+	assert.Equal(t, "", GetBearer(req))
+}