Correction Review Alex

Change json Identifiant to ID

1 files changed, 216 insertions, 0 deletions

diff --git a/S3.go b/S3.go
new file mode 100644
index 0000000..8dd87b4
--- /dev/null
+++ b/S3.go
@@ -0,0 +1,216 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+
+	"image"
+	"image/jpeg"
+	_ "image/png"
+
+	"mime/multipart"
+	"net/http"
+	"strings"
+
+	"github.com/go-ldap/ldap/v3"
+	"github.com/google/uuid"
+	"github.com/gorilla/mux"
+	"github.com/minio/minio-go/v7"
+	"github.com/minio/minio-go/v7/pkg/credentials"
+	"github.com/nfnt/resize"
+)
+
+const PROFILE_PICTURE_FIELD_NAME = "profilePicture"
+
+//Upload image through guichet server.
+func uploadImage(w http.ResponseWriter, r *http.Request, login *LoginStatus) (string, error) {
+	file, _, err := r.FormFile("image")
+
+	if err == http.ErrMissingFile {
+		return "", nil
+	}
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+	err = checkImage(file)
+	if err != nil {
+		return "", err
+	}
+
+	buff := bytes.NewBuffer([]byte{})
+	buff_thumbnail := bytes.NewBuffer([]byte{})
+	err = resizeThumb(file, buff, buff_thumbnail)
+	if err != nil {
+		return "", err
+	}
+
+	mc, err := newMinioClient()
+	if err != nil || mc == nil {
+		return "", err
+	}
+
+	var name, nameFull string
+
+	if nameConsul := login.UserEntry.GetAttributeValue(PROFILE_PICTURE_FIELD_NAME); nameConsul != "" {
+		name = nameConsul
+		nameFull = "full_" + name
+	} else {
+		name = uuid.New().String() + ".jpeg"
+		nameFull = "full_" + name
+	}
+
+	_, err = mc.PutObject(context.Background(), config.S3_Bucket, name, buff_thumbnail, int64(buff_thumbnail.Len()), minio.PutObjectOptions{
+		ContentType: "image/jpeg",
+	})
+	if err != nil {
+		return "", err
+	}
+
+	_, err = mc.PutObject(context.Background(), config.S3_Bucket, nameFull, buff, int64(buff.Len()), minio.PutObjectOptions{
+		ContentType: "image/jpeg",
+	})
+	if err != nil {
+		return "", err
+	}
+
+	return name, nil
+}
+
+func newMinioClient() (*minio.Client, error) {
+	endpoint := config.S3_Endpoint
+	accessKeyID := config.S3_AccesKey
+	secretKeyID := config.S3_SecretKey
+	useSSL := true
+
+	//Initialize Minio
+	minioCLient, err := minio.New(endpoint, &minio.Options{
+		Creds:  credentials.NewStaticV4(accessKeyID, secretKeyID, ""),
+		Secure: useSSL,
+		Region: config.S3_Region,
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return minioCLient, nil
+
+}
+
+func checkImage(file multipart.File) error {
+	buff := make([]byte, 512) //Detect read only the first 512 bytes
+	_, err := file.Read(buff)
+	if err != nil {
+		return err
+	}
+	file.Seek(0, 0)
+
+	fileType := http.DetectContentType(buff)
+	fileType = strings.Split(fileType, "/")[0]
+	switch fileType {
+	case "image":
+		return nil
+	default:
+		return errors.New("bad type")
+	}
+
+}
+
+func resizeThumb(file multipart.File, buff, buff_thumbnail *bytes.Buffer) error {
+	file.Seek(0, 0)
+	images, _, err := image.Decode(file)
+	if err != nil {
+		return err
+	}
+	buff.Reset()
+	images = resize.Thumbnail(200, 200, images, resize.Lanczos3)
+	images_thumbnail := resize.Thumbnail(80, 80, images, resize.Lanczos3)
+
+	err = jpeg.Encode(buff, images, &jpeg.Options{
+		Quality: 95,
+	})
+	if err != nil {
+		return err
+	}
+
+	err = jpeg.Encode(buff_thumbnail, images_thumbnail, &jpeg.Options{
+		Quality: 95,
+	})
+
+	return err
+}
+
+func handleDownloadImage(w http.ResponseWriter, r *http.Request) {
+	//Get input value by user
+	dn := mux.Vars(r)["name"]
+	size := mux.Vars(r)["size"]
+	//Check login
+	login := checkLogin(w, r)
+	if login == nil {
+		return
+	}
+	var imageName string
+	if dn != "unknown_profile" {
+		//Search values with ldap and filter
+
+		searchRequest := ldap.NewSearchRequest(
+			dn,
+			ldap.ScopeBaseObject, ldap.NeverDerefAliases, 0, 0, false,
+			"(objectclass=*)",
+			[]string{PROFILE_PICTURE_FIELD_NAME},
+			nil)
+
+		sr, err := login.conn.Search(searchRequest)
+		if err != nil {
+			http.Error(w, "Search: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		if len(sr.Entries) != 1 {
+			http.Error(w, fmt.Sprintf("Not found user: %s cn: %s and numberEntries: %d", dn, strings.Split(dn, ",")[0], len(sr.Entries)), http.StatusInternalServerError)
+			return
+		}
+		imageName = sr.Entries[0].GetAttributeValue(PROFILE_PICTURE_FIELD_NAME)
+		if imageName == "" {
+			http.Error(w, "User doesn't have profile image", http.StatusNotFound)
+			return
+		}
+	} else {
+		imageName = "unknown_profile.jpg"
+	}
+
+	if size == "full" {
+		imageName = "full_" + imageName
+	}
+	//Get the object after connect MC
+	mc, err := newMinioClient()
+	if err != nil {
+		http.Error(w, "MinioClient: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+	obj, err := mc.GetObject(context.Background(), "bottin-pictures", imageName, minio.GetObjectOptions{})
+	if err != nil {
+		http.Error(w, "MinioClient: GetObject: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+	defer obj.Close()
+	objStat, err := obj.Stat()
+	if err != nil {
+		http.Error(w, "MiniObjet: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+	//Send JSON through xhttp
+	w.Header().Set("Content-Type", objStat.ContentType)
+	w.Header().Set("Content-Length", strconv.Itoa(int(objStat.Size)))
+	//Copy obj in w
+	writting, err := io.Copy(w, obj)
+	if writting != objStat.Size || err != nil {
+		http.Error(w, fmt.Sprintf("WriteBody: %s, bytes wrote %d on %d", err.Error(), writting, objStat.Size), http.StatusInternalServerError)
+		return
+	}
+
+}