read support for length and offset

auth.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"log"
 	"net/http"
 )
 

context.go

@@ -1,6 +1,11 @@
 package main
 
-import ()
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/restic/restic/backend"
+)
 
 // A Context specifies the root directory where all repositories are stored
 type Context struct {
@@ -8,10 +13,18 @@ type Context struct {
 }
 
 func NewContext(path string) Context {
-	return Context{path}
+	return Context{filepath.Clean(path)}
 }
 
 // Creates the file structure of the Context
-func (c *Context) Init() {
-
+func (c *Context) Init() error {
+	if _, err := os.Stat(c.path); err != nil {
+		return os.MkdirAll(c.path, backend.Modes.Dir)
+	}
+	return nil
+}
+
+func (c *Context) Repository(name string) (Repository, error) {
+	name, err := ParseRepositoryName(name)
+	return Repository{filepath.Join(c.path, name)}, err
 }

handlers.go

@@ -1,40 +1,223 @@
 package main
 
 import (
-	"fmt"
+	"encoding/json"
+	"io/ioutil"
 	"net/http"
+	"time"
 )
 
 type Handler func(w http.ResponseWriter, r *http.Request, c *Context)
 
 func HeadConfig(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "head config")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	if !repo.HasConfig() {
+		http.NotFound(w, r)
+		return
+	}
 }
 
 func GetConfig(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "get config")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	config, errrc := repo.ReadConfig()
+	if errrc != nil {
+		http.NotFound(w, r)
+		return
+	}
+	w.Write(config)
 }
 
 func PostConfig(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "post config")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	config, errc := ioutil.ReadAll(r.Body)
+	if errc != nil {
+		http.NotFound(w, r)
+		return
+	}
+	errwc := repo.WriteConfig(config)
+	if errwc != nil {
+		http.NotFound(w, r)
+		return
+	}
 }
 
 func ListBlob(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "list blob")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	bt := BackendType(uri)
+	if bt.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	blobs, errb := repo.ListBlob(bt)
+	if errb != nil {
+		http.NotFound(w, r)
+		return
+	}
+	json, errj := json.Marshal(blobs)
+	if errj != nil {
+		http.NotFound(w, r)
+		return
+	}
+	w.Write(json)
 }
 
 func HeadBlob(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "head blob")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	bt := BackendType(uri)
+	if bt.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	id := BlobID(uri)
+	if id.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	if !repo.HasBlob(bt, id) {
+		http.NotFound(w, r)
+		return
+	}
 }
 
 func GetBlob(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "get blob")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	bt := BackendType(uri)
+	if bt.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	id := BlobID(uri)
+	if id.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	blob, errb := repo.ReadBlob(bt, id)
+	if errb != nil {
+		http.NotFound(w, r)
+		return
+	}
+	http.ServeContent(w, r, "", time.Unix(0, 0), blob)
 }
 
 func PostBlob(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "post blob")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	bt := BackendType(uri)
+	if bt.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	id := BlobID(uri)
+	if id.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	blob, errb := ioutil.ReadAll(r.Body)
+	if errb != nil {
+		http.NotFound(w, r)
+		return
+	}
+	errwb := repo.WriteBlob(bt, id, blob)
+	if errwb != nil {
+		http.NotFound(w, r)
+		return
+	}
 }
 
 func DeleteBlob(w http.ResponseWriter, r *http.Request, c *Context) {
-	fmt.Fprintln(w, "delete blob")
+	uri := r.RequestURI
+	name, errrn := RepositoryName(uri)
+	if errrn != nil {
+		http.NotFound(w, r)
+		return
+	}
+	repo, errr := c.Repository(name)
+	if errr != nil {
+		http.NotFound(w, r)
+		return
+	}
+	bt := BackendType(uri)
+	if bt.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	id := BlobID(uri)
+	if id.IsNull() {
+		http.NotFound(w, r)
+		return
+	}
+	errd := repo.DeleteBlob(bt, id)
+	if errd != nil {
+		http.NotFound(w, r)
+		return
+	}
 }

repository.go

@@ -1,6 +1,12 @@
 package main
 
-import ()
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/restic/restic/backend"
+)
 
 // A Repository is the place where backups are stored
 type Repository struct {
@@ -8,6 +14,81 @@ type Repository struct {
 }
 
 // Creates the file structure of the Repository
-func (r *Repository) Init() {
-
+func (r *Repository) Init() error {
+	dirs := []string{
+		r.path,
+		filepath.Join(r.path, string(backend.Data)),
+		filepath.Join(r.path, string(backend.Snapshot)),
+		filepath.Join(r.path, string(backend.Index)),
+		filepath.Join(r.path, string(backend.Lock)),
+		filepath.Join(r.path, string(backend.Key)),
+	}
+	for _, d := range dirs {
+		if _, errs := os.Stat(d); errs != nil {
+			errmk := os.MkdirAll(d, backend.Modes.Dir)
+			if errmk != nil {
+				return errmk
+			}
+		}
+	}
+	return nil
+}
+
+func (r *Repository) HasConfig() bool {
+	file := filepath.Join(r.path, string(backend.Config))
+	if _, err := os.Stat(file); err != nil {
+		return false
+	}
+	return true
+}
+
+func (r *Repository) ReadConfig() ([]byte, error) {
+	file := filepath.Join(r.path, string(backend.Config))
+	return ioutil.ReadFile(file)
+}
+
+func (r *Repository) WriteConfig(data []byte) error {
+	file := filepath.Join(r.path, string(backend.Config))
+	return ioutil.WriteFile(file, data, backend.Modes.File)
+}
+
+func (r *Repository) ListBlob(t backend.Type) ([]string, error) {
+	var blobs []string
+	dir := filepath.Join(r.path, string(t))
+	files, err := ioutil.ReadDir(dir)
+	if err != nil {
+		return blobs, err
+	}
+	blobs = make([]string, len(files))
+	for i, f := range files {
+		blobs[i] = f.Name()
+	}
+	return blobs, nil
+}
+
+func (r *Repository) HasBlob(bt backend.Type, id backend.ID) bool {
+	file := filepath.Join(r.path, string(bt), id.String())
+	if _, err := os.Stat(file); err != nil {
+		return false
+	}
+	return true
+}
+
+func (r *Repository) ReadBlob(bt backend.Type, id backend.ID) (*os.File, error) {
+	file := filepath.Join(r.path, string(bt), id.String())
+	f, err := os.Open(file)
+	if err != nil {
+		return f, err
+	}
+	return f, nil
+}
+
+func (r *Repository) WriteBlob(bt backend.Type, id backend.ID, data []byte) error {
+	file := filepath.Join(r.path, string(bt), id.String())
+	return ioutil.WriteFile(file, data, backend.Modes.File)
+}
+
+func (r *Repository) DeleteBlob(bt backend.Type, id backend.ID) error {
+	file := filepath.Join(r.path, string(bt), id.String())
+	return os.Remove(file)
 }

router.go

@@ -1,25 +1,26 @@
 package main
 
 import (
-	"errors"
 	"log"
 	"net/http"
-	"regexp"
 	"strings"
 
 	"github.com/restic/restic/backend"
 )
 
-// Route all the server requests
-func Router(w http.ResponseWriter, r *http.Request) {
+type Router struct {
+	Context
+}
+
+func (router Router) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	m := r.Method
 	u := r.RequestURI
 
-	log.Println("%s %s", m, u)
+	log.Printf("%s %s", m, u)
 
 	if Authorize(r) {
 		if handler := RestAPI(m, u); handler != nil {
-			handler(w, r, nil)
+			handler(w, r, &router.Context)
 		} else {
 			http.Error(w, "not found", 404)
 		}
@@ -28,42 +29,6 @@ func Router(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-// Returns the repository name for a given path
-func RepositoryName(u string) (string, error) {
-	s := strings.Split(u, "/")
-	if len(s) <= 1 {
-		return "", errors.New("path does not contain repository name")
-	}
-	if len(s[1]) < 1 {
-		return "", errors.New("repository name should contain at least 1 character")
-	}
-	match, err := regexp.MatchString("^[a-zA-Z0-9_-]*$", s[1])
-	if !match || err != nil {
-		return "", errors.New("repository name should not contains special characters")
-	}
-	return s[1], nil
-}
-
-// Returns the backend type for a given path
-func BackendType(u string) backend.Type {
-	s := strings.Split(u, "/")
-	var bt backend.Type
-	if len(s) > 2 {
-		bt, _ = backend.ParseType(s[2])
-	}
-	return bt
-}
-
-// Returns the blob ID for a given path
-func BlobID(u string) backend.ID {
-	s := strings.Split(u, "/")
-	var id backend.ID
-	if len(s) > 3 {
-		id, _ = backend.ParseID(s[3])
-	}
-	return id
-}
-
 // The Rest API returns a Handler when a match occur or nil.
 func RestAPI(m string, u string) Handler {
 	s := strings.Split(u, "/")

server.go

@@ -1,10 +1,28 @@
 package main
 
-import ()
+import (
+	//"io/ioutil"
+	"log"
+	"net/http"
+)
 
 func main() {
-
 	//path, _ := ioutil.TempDir("", "restic-repository-")
+	//log.Printf("initialize context at %s", path)
 
-	//http.ListenAndServe(":8000", r)
+	context := Context{"/tmp/restic"}
+
+	repo, _ := context.Repository("repo")
+	repo.Init()
+
+	errc := context.Init()
+	if errc != nil {
+		log.Println("context initialization failed")
+		return
+	}
+
+	router := Router{context}
+	port := ":8000"
+	log.Printf("start server on port %s", port)
+	http.ListenAndServe(port, router)
 }