Import file from owncloud

admin/api_file.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"crypto/sha512"
+	"encoding/base32"
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+
+	"srs.epita.fr/fic-server/libfic"
+)
+
+type uploadedFile struct {
+	URI string
+}
+
+func createExerciceFile(theme fic.Theme, exercice fic.Exercice, args []string, body []byte) (interface{}, error) {
+	var uf uploadedFile
+	if err := json.Unmarshal(body, &uf); err != nil {
+		return nil, err
+	}
+
+	if len(uf.URI) == 0 {
+		return nil, errors.New("URI not filled")
+	}
+
+	if body, err := getCloudFile(uf.URI); err != nil {
+		return nil, err
+	} else {
+		hash := sha512.Sum512([]byte(uf.URI))
+		pathname := path.Join(fic.FilesDir, strings.ToLower(base32.StdEncoding.EncodeToString(hash[:])), path.Base(uf.URI))
+		if err := os.MkdirAll(path.Dir(pathname), 0777); err != nil {
+			return nil, err
+		}
+
+		if err := ioutil.WriteFile(pathname, body, 0777); err != nil {
+			return nil, err
+		}
+
+		return exercice.ImportFile(pathname, uf.URI)
+	}
+}
+
+func getCloudFile(pathname string) ([]byte, error) {
+	client := http.Client{}
+	if req, err := http.NewRequest("GET", CloudDAVBase+pathname, nil); err != nil {
+		return nil, err
+	} else {
+		req.SetBasicAuth(CloudUsername, CloudPassword)
+		if resp, err := client.Do(req); err != nil {
+			return nil, err
+		} else {
+			defer resp.Body.Close()
+			if body, err := ioutil.ReadAll(resp.Body); err != nil {
+				return nil, err
+			} else {
+				return body, nil
+			}
+		}
+	}
+}