Keep working on this

2024-11-24 04:31:32 +00:00 · 2023-08-21 00:27:54 +01:00 · 2023-08-21 00:27:54 +01:00 · a431e506ec
commit a431e506ec
parent c727ac594f
11 changed files with 410 additions and 25 deletions
--- a/cmd/site-hosting/main.go
+++ b/cmd/site-hosting/main.go
@ -3,8 +3,12 @@ package main
 import (
 	"flag"
 	"fmt"
+	"github.com/1f349/site-hosting/config"
+	"github.com/1f349/site-hosting/serve"
 	"github.com/1f349/site-hosting/upload"
+	"github.com/MrMelon54/exit-reload"
 	"github.com/julienschmidt/httprouter"
+	"github.com/spf13/afero"
 	"log"
 	"net/http"
 	"os"
@ -32,10 +36,15 @@ func main() {
 		log.Fatal("[SiteHosting] Failed to stat storage path, does the directory exist? Error: ", err)
 	}

-	uploadHandler := upload.New(storageFlag)
+	storageFs := afero.NewBasePathFs(afero.NewOsFs(), storageFlag)
+	liveConf := config.New(storageFs)
+
+	uploadHandler := upload.New(storageFs, liveConf)
+	serveHandler := serve.New(storageFs, liveConf)

 	router := httprouter.New()
 	router.POST("/u/:site", uploadHandler.Handle)
+	router.GET("/", serveHandler.Handle)

 	srv := &http.Server{
 		Addr:    listenFlag,
@ -53,13 +62,29 @@ func main() {
 		}
 	}()

+	exit_reload.ExitReload("SiteHosting", func() {
+
+	}, func() {
+
+	})
+
+	exitSig := make(chan struct{}, 1)
 	scReload := make(chan os.Signal, 1)
 	signal.Notify(scReload, syscall.SIGHUP)
+	go func() {
+		for {
+			select {
+			case <-exitSig:
+			case <-scReload:
+			}
+		}
+	}()

 	// Wait for exit signal
 	sc := make(chan os.Signal, 1)
 	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM, os.Interrupt, os.Kill)
 	<-sc
+	close(exitSig)
 	fmt.Println()

 	// Stop server
--- a/config/config.go
+++ b/config/config.go
@ -0,0 +1,92 @@
+package config
+
+import (
+	"fmt"
+	"github.com/MrMelon54/trie"
+	"github.com/spf13/afero"
+	"gopkg.in/yaml.v3"
+	"sync"
+)
+
+type Config struct {
+	fs afero.Fs
+	l  *sync.RWMutex
+	m  *trie.Trie[SiteConf]
+}
+
+type SiteConf struct {
+	Domain string `json:"domain"`
+	Token  string `json:"token"`
+}
+
+func New(storageFs afero.Fs) *Config {
+	return &Config{
+		fs: storageFs,
+		l:  new(sync.RWMutex),
+		m:  trie.BuildFromMap(map[string]SiteConf{}),
+	}
+}
+
+func Testable(sites []SiteConf) *Config {
+	c := &Config{}
+	c.loadSlice(sites)
+	return c
+}
+
+func (c *Config) Load() error {
+	open, err := c.fs.Open("sites.yml")
+	if err != nil {
+		return fmt.Errorf("failed to open sites.yml: %w", err)
+	}
+	var a []SiteConf
+	err = yaml.NewDecoder(open).Decode(&a)
+	if err != nil {
+		return fmt.Errorf("failed to parse yaml: %w", err)
+	}
+
+	c.loadSlice(a)
+	return nil
+}
+
+func (c *Config) loadSlice(sites []SiteConf) {
+	m := make(map[string]SiteConf, len(sites))
+
+	for _, i := range sites {
+		m[c.slugFromDomain(i.Domain)] = i
+	}
+
+	t := trie.BuildFromMap(m)
+
+	c.l.Lock()
+	c.m = t
+	c.l.Unlock()
+}
+
+func (c *Config) slugFromDomain(domain string) string {
+	a := []byte(domain)
+	for i := range a {
+		switch {
+		case a[i] == '-':
+			// skip
+		case a[i] >= 'A' && a[i] <= 'Z':
+			a[i] += 32
+		case a[i] >= 'a' && a[i] <= 'z':
+			// skip
+		case a[i] >= '0' && a[i] <= '9':
+			// skip
+		default:
+			a[i] = '-'
+		}
+	}
+	return string(a)
+}
+
+func (c *Config) Get(key string) (*SiteConf, int, bool) {
+	return c.getInternal(c.slugFromDomain(key))
+}
+
+func (c *Config) getInternal(key string) (*SiteConf, int, bool) {
+	c.l.RLock()
+	defer c.l.RUnlock()
+	return c.m.SearchPrefixInString(key)
+}
--- a/config/config_test.go
+++ b/config/config_test.go
@ -0,0 +1,70 @@
+package config
+
+import (
+	_ "embed"
+	"github.com/MrMelon54/trie"
+	"github.com/spf13/afero"
+	"github.com/stretchr/testify/assert"
+	"sync"
+	"testing"
+)
+
+//go:embed test-sites.yml
+var testSitesYml []byte
+
+func TestConfig_Load(t *testing.T) {
+	f := afero.NewMemMapFs()
+	create, err := f.Create("sites.yml")
+	assert.NoError(t, err)
+	_, err = create.Write(testSitesYml)
+	assert.NoError(t, err)
+	assert.NoError(t, create.Close())
+
+	c := New(f)
+	assert.NoError(t, c.Load())
+	val, ok := c.m.GetByString("example-com")
+	assert.True(t, ok)
+	assert.Equal(t, SiteConf{Domain: "example.com", Token: "abcd1234"}, *val)
+}
+
+func TestConfig_loadSlice(t *testing.T) {
+	c := &Config{l: new(sync.RWMutex)}
+	c.loadSlice([]SiteConf{
+		{Domain: "example.com", Token: "abcd1234"},
+	})
+	a, ok := c.m.GetByString("example-com")
+	assert.True(t, ok)
+	assert.Equal(t, SiteConf{Domain: "example.com", Token: "abcd1234"}, *a)
+}
+
+func TestConfig_slugFromDomain(t *testing.T) {
+	c := &Config{}
+	assert.Equal(t, "---------------", c.slugFromDomain("!\"#$%&'()*+,-./"))
+	assert.Equal(t, "0123456789", c.slugFromDomain("0123456789"))
+	assert.Equal(t, "-------", c.slugFromDomain(":;<=>?@"))
+	assert.Equal(t, "abcdefghijklmnopqrstuvwxyz", c.slugFromDomain("ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
+	assert.Equal(t, "------", c.slugFromDomain("[\\]^_`"))
+	assert.Equal(t, "abcdefghijklmnopqrstuvwxyz", c.slugFromDomain("abcdefghijklmnopqrstuvwxyz"))
+	assert.Equal(t, "----", c.slugFromDomain("{|}~"))
+}
+
+func FuzzConfig_slugFromDomain(f *testing.F) {
+	c := &Config{}
+	f.Fuzz(func(t *testing.T, a string) {
+		b := c.slugFromDomain(a)
+		if len(a) != len(b) {
+			t.Fatalf("value '%s' (%d) did not match lengths with the output '%s' (%d)", a, len(a), b, len(b))
+		}
+	})
+}
+
+func TestConfig_Get(t *testing.T) {
+	c := &Config{l: new(sync.RWMutex), m: &trie.Trie[SiteConf]{}}
+	c.loadSlice([]SiteConf{
+		{Domain: "example.com", Token: "abcd1234"},
+	})
+	val, n, ok := c.Get("example.com")
+	assert.True(t, ok)
+	assert.Equal(t, 11, n)
+	assert.Equal(t, SiteConf{Domain: "example.com", Token: "abcd1234"}, *val)
+}
--- a/config/test-sites.yml
+++ b/config/test-sites.yml
@ -0,0 +1,2 @@
+- domain: example.com
+  token: abcd1234
--- a/go.mod
+++ b/go.mod
@ -3,14 +3,16 @@ module github.com/1f349/site-hosting
 go 1.20

 require (
+	github.com/MrMelon54/exit-reload v0.0.1
+	github.com/MrMelon54/trie v0.0.2
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/spf13/afero v1.9.5
-	github.com/stretchr/testify v1.7.0
+	github.com/stretchr/testify v1.8.4
+	gopkg.in/yaml.v3 v3.0.1
 )

 require (
-	github.com/davecgh/go-spew v1.1.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
+	golang.org/x/text v0.3.8 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -38,6 +38,10 @@ cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3f
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/MrMelon54/exit-reload v0.0.1 h1:sxHa59tNEQMcikwuX2+93lw6Vi1+R7oCRF8a0C3alXc=
+github.com/MrMelon54/exit-reload v0.0.1/go.mod h1:PLiSfmUzwdpTTQP3BBfUPhkqPwaIZjx0DuXBnM76Bug=
+github.com/MrMelon54/trie v0.0.2 h1:ZXWcX5ij62O9K4I/anuHmVg8L3tF0UGdlPceAASwKEY=
+github.com/MrMelon54/trie v0.0.2/go.mod h1:sGCGOcqb+DxSxvHgSOpbpkmA7mFZR47YDExy9OCbVZI=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@ -46,8 +50,9 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@ -137,8 +142,9 @@ github.com/spf13/afero v1.9.5/go.mod h1:UBogFpq8E9Hx+xc5CNTTEpTnuHVmXDwZcZcE1eb/
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@ -283,8 +289,9 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@ -432,8 +439,9 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
--- a/serve/serve.go
+++ b/serve/serve.go
@ -0,0 +1,112 @@
+package serve
+
+import (
+	"github.com/1f349/site-hosting/config"
+	"github.com/julienschmidt/httprouter"
+	"github.com/spf13/afero"
+	"io"
+	"net/http"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+var (
+	indexBranches = []string{
+		"main",
+		"master",
+	}
+	indexFiles = []func(p string) string{
+		func(p string) string { return path.Join(p, "index.html") },
+		func(p string) string { return p + ".html" },
+		func(p string) string { return p },
+	}
+)
+
+func New(storage afero.Fs, conf *config.Config) *Handler {
+	return &Handler{storage, conf}
+}
+
+type Handler struct {
+	storageFs afero.Fs
+	conf      *config.Config
+}
+
+func (h *Handler) Handle(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
+	site, branch, subdomain, ok := h.findSiteBranchSubdomain(req.Host)
+	if !ok {
+		http.Error(rw, "Bad Gateway", http.StatusBadGateway)
+		return
+	}
+	if branch == "" {
+		for _, i := range indexBranches {
+			if h.tryServePath(rw, site, i, subdomain, req.URL.Path) {
+				return
+			}
+		}
+	} else if h.tryServePath(rw, site, branch, subdomain, req.URL.Path) {
+		return
+	}
+	http.Error(rw, "404 Not Found", http.StatusNotFound)
+}
+
+func (h *Handler) findSiteBranchSubdomain(host string) (site, branch, subdomain string, ok bool) {
+	var siteN int
+	siteN, site = h.findSite(host)
+	if site == "" {
+		return
+	}
+
+	if host[siteN] != '-' {
+		return
+	}
+	host = host[siteN+1:]
+
+	strings.LastIndexByte(host, '-')
+	return
+}
+
+func (h *Handler) findSite(host string) (int, string) {
+	siteVal, siteN, siteOk := h.conf.Get(host)
+	if !siteOk || siteVal == nil {
+		return -1, ""
+	}
+
+	// so I used less than or equal here that's to prevent a bug where the prefix
+	// found is longer than the string obviously that sounds impossible, and it is,
+	// but I would rather the program not crash if some other bug allows this weird
+	// event to happen
+	if siteN <= len(host) {
+		return -1, ""
+	}
+	return siteN, siteVal.Domain
+}
+
+func (h *Handler) tryServePath(rw http.ResponseWriter, site, branch, subdomain, p string) bool {
+	for _, i := range indexFiles {
+		if h.tryServeFile(rw, site, branch, subdomain, i(p)) {
+			return true
+		}
+	}
+	return false
+}
+
+func (h *Handler) tryServeFile(rw http.ResponseWriter, site, branch, subdomain, p string) bool {
+	// if there is a subdomain then load files from inside the subdomain folder
+	if subdomain != "" {
+		p = filepath.Join("_subdomain", subdomain, p)
+	}
+	open, err := h.storageFs.Open(filepath.Join(site, branch, p))
+	switch {
+	case err == nil:
+		rw.WriteHeader(http.StatusOK)
+		_, _ = io.Copy(rw, open)
+	case os.IsNotExist(err):
+		// check next path
+		return false
+	default:
+		http.Error(rw, "500 Internal Server Error", http.StatusInternalServerError)
+	}
+	return true
+}
--- a/serve/serve_test.go
+++ b/serve/serve_test.go
@ -0,0 +1,33 @@
+package serve
+
+import (
+	"github.com/1f349/site-hosting/config"
+	"github.com/spf13/afero"
+	"testing"
+)
+
+func makeConfig(f afero.Fs) (*config.Config, error) {
+	c := config.New(f)
+	return c, c.Load()
+}
+
+func TestName(t *testing.T) {
+	f := afero.NewMemMapFs()
+	h := &Handler{
+		storageFs: f,
+		conf: config.Testable([]config.SiteConf{
+			{Domain: "example.com", Token: "abcd1234"},
+		}),
+	}
+	h.findSiteBranchSubdomain("example-com-test")
+	site, branch := h.findSiteBranch("example_com_test")
+}
+
+func TestHandler_Handle(t *testing.T) {
+	f := afero.NewMemMapFs()
+	h := &Handler{
+		storageFs: f,
+		conf:      &config.Config{},
+	}
+	h.Handle()
+}
--- a/upload/test-sites.yml
+++ b/upload/test-sites.yml
@ -0,0 +1,2 @@
+- domain: example.com
+  token: abcd1234
--- a/upload/upload.go
+++ b/upload/upload.go
@ -4,26 +4,39 @@ import (
 	"archive/tar"
 	"compress/gzip"
 	"fmt"
+	"github.com/1f349/site-hosting/config"
 	"github.com/julienschmidt/httprouter"
 	"github.com/spf13/afero"
 	"io"
+	"io/fs"
 	"net/http"
 	"os"
 	"path/filepath"
 )

-func New(storagePath string) *Handler {
-	fs := afero.NewBasePathFs(afero.NewOsFs(), storagePath)
-	return &Handler{fs}
+func New(storage afero.Fs, conf *config.Config) *Handler {
+	return &Handler{storage, conf}
 }

 type Handler struct {
 	storageFs afero.Fs
+	conf      *config.Config
 }

 func (h *Handler) Handle(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
-	site := params.ByName("site")
-	branch := req.URL.Query().Get("branch")
+	q := req.URL.Query()
+	site := q.Get("site")
+	branch := q.Get("branch")
+
+	siteConf, siteN, siteOk := h.conf.Get(site)
+	if !siteOk || siteN != len(site) || siteConf == nil {
+		http.Error(rw, "400 Bad Request", http.StatusBadRequest)
+		return
+	}
+	if "Bearer "+siteConf.Token != req.Header.Get("Authorization") {
+		http.Error(rw, "403 Forbidden", http.StatusForbidden)
+		return
+	}

 	fileData, fileHeader, err := req.FormFile("upload")
 	if err != nil {
@ -47,7 +60,17 @@ func (h *Handler) Handle(rw http.ResponseWriter, req *http.Request, params httpr
 }

 func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) error {
-	storeFs := afero.NewBasePathFs(h.storageFs, filepath.Join(site, branch))
+	siteBranchPath := filepath.Join(site, branch)
+	err := h.storageFs.Rename(siteBranchPath, siteBranchPath+".old")
+	if err != nil && !os.IsNotExist(err) {
+		return fmt.Errorf("failed to save an old copy of the site: %w", err)
+	}
+
+	err = h.storageFs.MkdirAll(siteBranchPath, fs.ModePerm)
+	if err != nil {
+		return fmt.Errorf("failed to make site directory: %w", err)
+	}
+	branchFs := afero.NewBasePathFs(h.storageFs, siteBranchPath)

 	// decompress gzip wrapper
 	gzipReader, err := gzip.NewReader(fileData)
@ -60,18 +83,19 @@ func (h *Handler) extractTarGzUpload(fileData io.Reader, site, branch string) er
 	for {
 		next, err := tarReader.Next()
 		if err == io.EOF {
+			// finished reading tar, exit now
 			break
 		}
 		if err != nil {
 			return fmt.Errorf("invalid tar archive: %w", err)
 		}

-		err = storeFs.MkdirAll(filepath.Dir(next.Name), os.ModePerm)
+		err = branchFs.MkdirAll(filepath.Dir(next.Name), fs.ModePerm)
 		if err != nil {
 			return fmt.Errorf("failed to make directory tree: %w", err)
 		}

-		create, err := storeFs.Create(next.Name)
+		create, err := branchFs.Create(next.Name)
 		if err != nil {
 			return fmt.Errorf("failed to create output file: '%s': %w", next.Name, err)
 		}
--- a/upload/upload_test.go
+++ b/upload/upload_test.go
@ -3,6 +3,7 @@ package upload
 import (
 	"bytes"
 	_ "embed"
+	"github.com/1f349/site-hosting/config"
 	"github.com/julienschmidt/httprouter"
 	"github.com/spf13/afero"
 	"github.com/stretchr/testify/assert"
@ -13,8 +14,12 @@ import (
 	"testing"
 )

-//go:embed test-archive.tar.gz
-var testArchiveTarGz []byte
+var (
+	//go:embed test-archive.tar.gz
+	testArchiveTarGz []byte
+	//go:embed test-sites.yml
+	testSitesYml []byte
+)

 func assertUploadedFile(t *testing.T, fs afero.Fs) {
 	// check uploaded file exists
@ -32,8 +37,16 @@ func assertUploadedFile(t *testing.T, fs afero.Fs) {
 }

 func TestHandler_Handle(t *testing.T) {
-	fs := afero.NewMemMapFs()
-	h := &Handler{fs}
+	f := afero.NewMemMapFs()
+	conf := config.New(f)
+	h := &Handler{f, conf}
+	create, err := f.Create("sites.yml")
+	assert.NoError(t, err)
+	_, err = create.Write(testSitesYml)
+	assert.NoError(t, err)
+	assert.NoError(t, create.Close())
+	assert.NoError(t, conf.Load())
+
 	mpBuf := new(bytes.Buffer)
 	mp := multipart.NewWriter(mpBuf)
 	file, err := mp.CreateFormFile("upload", "test-archive.tar.gz")
@ -41,11 +54,12 @@ func TestHandler_Handle(t *testing.T) {
 	_, err = file.Write(testArchiveTarGz)
 	assert.NoError(t, err)
 	assert.NoError(t, mp.Close())
-	req, err := http.NewRequest(http.MethodPost, "https://example.com/u/example.com?branch=main", mpBuf)
+	req, err := http.NewRequest(http.MethodPost, "https://example.com/u?site=example.com&branch=main", mpBuf)
 	assert.NoError(t, err)
+	req.Header.Set("Authorization", "Bearer abcd1234")
 	req.Header.Set("Content-Type", mp.FormDataContentType())
 	rec := httptest.NewRecorder()
-	h.Handle(rec, req, httprouter.Params{{Key: "site", Value: "example.com"}})
+	h.Handle(rec, req, httprouter.Params{})
 	res := rec.Result()
 	assert.Equal(t, http.StatusAccepted, res.StatusCode)
 	assert.NotNil(t, res.Body)
@ -53,12 +67,13 @@ func TestHandler_Handle(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, "", string(all))

-	assertUploadedFile(t, fs)
+	assertUploadedFile(t, f)
 }

 func TestHandler_extractTarGzUpload(t *testing.T) {
 	fs := afero.NewMemMapFs()
-	h := &Handler{fs}
+	conf := config.New(fs)
+	h := &Handler{fs, conf}
 	buffer := bytes.NewBuffer(testArchiveTarGz)
 	assert.NoError(t, h.extractTarGzUpload(buffer, "example.com", "main"))