aiforge/routers/repo/attachment.go

// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package repo

import (
	contexExt "context"
	"fmt"
	"net/http"
	"strconv"
	"strings"

	"code.gitea.io/gitea/models"
	"code.gitea.io/gitea/modules/context"
	"code.gitea.io/gitea/modules/log"
	"code.gitea.io/gitea/modules/minio_ext"
	"code.gitea.io/gitea/modules/setting"
	"code.gitea.io/gitea/modules/storage"
	"code.gitea.io/gitea/modules/upload"
	"code.gitea.io/gitea/modules/worker"


	gouuid "github.com/satori/go.uuid"
)

const (
	//result of decompress
	DecompressSuccess			= "0"
	DecompressFailed			= "1"
)

func RenderAttachmentSettings(ctx *context.Context) {
	renderAttachmentSettings(ctx)
}

func renderAttachmentSettings(ctx *context.Context) {
	ctx.Data["IsAttachmentEnabled"] = setting.Attachment.Enabled
	ctx.Data["AttachmentStoreType"] = setting.Attachment.StoreType
	ctx.Data["AttachmentAllowedTypes"] = setting.Attachment.AllowedTypes
	ctx.Data["AttachmentMaxSize"] = setting.Attachment.MaxSize
	ctx.Data["AttachmentMaxFiles"] = setting.Attachment.MaxFiles
}

// UploadAttachment response for uploading issue's attachment
func UploadAttachment(ctx *context.Context) {
	if !setting.Attachment.Enabled {
		ctx.Error(404, "attachment is not enabled")
		return
	}

	file, header, err := ctx.Req.FormFile("file")
	if err != nil {
		ctx.Error(500, fmt.Sprintf("FormFile: %v", err))
		return
	}
	defer file.Close()

	buf := make([]byte, 1024)
	n, _ := file.Read(buf)
	if n > 0 {
		buf = buf[:n]
	}

	err = upload.VerifyAllowedContentType(buf, strings.Split(setting.Attachment.AllowedTypes, ","))
	if err != nil {
		ctx.Error(400, err.Error())
		return
	}

	datasetID, _ := strconv.ParseInt(ctx.Req.FormValue("dataset_id"), 10, 64)

	attach, err := models.NewAttachment(&models.Attachment{
		IsPrivate:  true,
		UploaderID: ctx.User.ID,
		Name:       header.Filename,
		DatasetID:  datasetID,
	}, buf, file)
	if err != nil {
		ctx.Error(500, fmt.Sprintf("NewAttachment: %v", err))
		return
	}

	log.Trace("New attachment uploaded: %s", attach.UUID)
	ctx.JSON(200, map[string]string{
		"uuid": attach.UUID,
	})
}

func UpdatePublicAttachment(ctx *context.Context) {
	file := ctx.Query("file")
	isPrivate, _ := strconv.ParseBool(ctx.Query("is_private"))
	attach, err := models.GetAttachmentByUUID(file)
	if err != nil {
		ctx.Error(404, err.Error())
		return
	}
	attach.IsPrivate = isPrivate
	models.UpdateAttachment(attach)
}

// DeleteAttachment response for deleting issue's attachment
func DeleteAttachment(ctx *context.Context) {
	file := ctx.Query("file")
	attach, err := models.GetAttachmentByUUID(file)
	if err != nil {
		ctx.Error(400, err.Error())
		return
	}
	if !ctx.IsSigned || (ctx.User.ID != attach.UploaderID) {
		ctx.Error(403)
		return
	}
	err = models.DeleteAttachment(attach, true)
	if err != nil {
		ctx.Error(500, fmt.Sprintf("DeleteAttachment: %v", err))
		return
	}
	ctx.JSON(200, map[string]string{
		"uuid": attach.UUID,
	})
}

// GetAttachment serve attachements
func GetAttachment(ctx *context.Context) {
	attach, err := models.GetAttachmentByUUID(ctx.Params(":uuid"))
	if err != nil {
		if models.IsErrAttachmentNotExist(err) {
			ctx.Error(404)
		} else {
			ctx.ServerError("GetAttachmentByUUID", err)
		}
		return
	}

	repository, unitType, err := attach.LinkedRepository()
	if err != nil {
		ctx.ServerError("LinkedRepository", err)
		return
	}

	if repository == nil { //If not linked
		if !(ctx.IsSigned && attach.UploaderID == ctx.User.ID) { //We block if not the uploader
			ctx.Error(http.StatusNotFound)
			return
		}
	} else { //If we have the repository we check access
		perm, err := models.GetUserRepoPermission(repository, ctx.User)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "GetUserRepoPermission", err.Error())
			return
		}
		if !perm.CanRead(unitType) {
			ctx.Error(http.StatusNotFound)
			return
		}
	}

	dataSet, err := attach.LinkedDataSet()
	if err != nil {
		ctx.ServerError("LinkedDataSet", err)
		return
	}

	if dataSet != nil {
		isPermit, err := models.GetUserDataSetPermission(dataSet, ctx.User)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "GetUserDataSetPermission", err.Error())
			return
		}
		if !isPermit {
			ctx.Error(http.StatusNotFound)
			return
		}
	}

	//If we have matched and access to release or issue
	if setting.Attachment.StoreType == storage.MinioStorageType {
		url, err := storage.Attachments.PresignedGetURL(attach.RelativePath(), attach.Name)
		if err != nil {
			ctx.ServerError("PresignedGetURL", err)
			return
		}

		if err = increaseDownloadCount(attach, dataSet); err != nil {
			ctx.ServerError("Update", err)
			return
		}

		http.Redirect(ctx.Resp, ctx.Req.Request, url, http.StatusMovedPermanently)

	} else {
		fr, err := storage.Attachments.Open(attach.RelativePath())
		if err != nil {
			ctx.ServerError("Open", err)
			return
		}
		defer fr.Close()

		if err = increaseDownloadCount(attach, dataSet); err != nil {
			ctx.ServerError("Update", err)
			return
		}
		if err = ServeData(ctx, attach.Name, fr); err != nil {
			ctx.ServerError("ServeData", err)
			return
		}
	}

}

func increaseDownloadCount(attach *models.Attachment, dataSet *models.Dataset) error {
	if err := attach.IncreaseDownloadCount(); err != nil {
		return err
	}

	if dataSet != nil {
		if err := models.IncreaseDownloadCount(dataSet.ID); err != nil {
			return err
		}
	}

	return nil
}

// Get a presigned url for put object
func GetPresignedPutObjectURL(ctx *context.Context) {
	if !setting.Attachment.Enabled {
		ctx.Error(404, "attachment is not enabled")
		return
	}

	err := upload.VerifyFileType(ctx.Params("file_type"), strings.Split(setting.Attachment.AllowedTypes, ","))
	if err != nil {
		ctx.Error(400, err.Error())
		return
	}

	if setting.Attachment.StoreType == storage.MinioStorageType {
		uuid := gouuid.NewV4().String()
		url, err := storage.Attachments.PresignedPutURL(models.AttachmentRelativePath(uuid))
		if err != nil {
			ctx.ServerError("PresignedPutURL", err)
			return
		}

		ctx.JSON(200, map[string]string{
			"uuid": uuid,
			"url":  url,
		})
	} else {
		ctx.Error(404, "storage type is not enabled")
		return
	}
}

// AddAttachment response for add attachment record
func AddAttachment(ctx *context.Context) {
	uuid := ctx.Query("uuid")
	has, err := storage.Attachments.HasObject(models.AttachmentRelativePath(uuid))
	if err != nil {
		ctx.ServerError("HasObject", err)
		return
	}

	if !has {
		ctx.Error(404, "attachment has not been uploaded")
		return
	}

	attachment, err := models.InsertAttachment(&models.Attachment{
		UUID:       uuid,
		UploaderID: ctx.User.ID,
		IsPrivate:  true,
		Name:       ctx.Query("file_name"),
		Size:       ctx.QueryInt64("size"),
		DatasetID:  ctx.QueryInt64("dataset_id"),
	})

	if err != nil {
		ctx.Error(500, fmt.Sprintf("InsertAttachment: %v", err))
		return
	}

	if attachment.DatasetID != 0 {
		if strings.HasSuffix(attachment.Name, ".zip") {
			err = worker.SendDecompressTask(contexExt.Background(), uuid)
			if err != nil {
				log.Error("SendDecompressTask(%s) failed:%s", uuid, err.Error())
			} else {
				attachment.DecompressState = models.DecompressStateIng
				err = models.UpdateAttachment(attachment)
				if err != nil {
					log.Error("UpdateAttachment state(%s) failed:%s", uuid, err.Error())
				}
			}
		}
	}

	ctx.JSON(200, map[string]string{
		"result_code": "0",
	})
}

func UpdateAttachmentDecompressState(ctx *context.Context) {
	uuid := ctx.Query("uuid")
	result := ctx.Query("result")
	attach, err := models.GetAttachmentByUUID(uuid)
	if err != nil {
		log.Error("GetAttachmentByUUID(%s) failed:%s", uuid, err.Error())
		return
	}

	if result == DecompressSuccess {
		attach.DecompressState = models.DecompressStateDone
	} else if result == DecompressFailed {
		attach.DecompressState = models.DecompressStateFailed
	} else {
		log.Error("result is error:", result)
		return
	}

	err = models.UpdateAttachment(attach)
	if err != nil {
		log.Error("UpdateAttachment(%s) failed:%s", uuid, err.Error())
		return
	}

	ctx.JSON(200, map[string]string{
		"result_code": "0",
	})
}


func GetSuccessChunks(ctx *context.Context) {
	fileMD5 := ctx.Query("md5")

	fileChunk, err := models.GetFileChunkByMD5(fileMD5)
	if err != nil {
		if models.IsErrFileChunkNotExist(err) {
			ctx.JSON(200, map[string]string{
				"uuid": "",
				"uploaded": "0",
				"uploadID": "",
				"chunks": "",
			})
		} else {
			ctx.ServerError("GetFileChunkByMD5", err)
		}
		return
	}

	ctx.JSON(200, map[string]string{
		"uuid": fileChunk.UUID,
		"uploaded": strconv.Itoa(fileChunk.IsUploaded),
		"uploadID":fileChunk.UploadID,
		"chunks": fileChunk.HasUploaded,
	})

}

func NewMultipart(ctx *context.Context) {
	if !setting.Attachment.Enabled {
		ctx.Error(404, "attachment is not enabled")
		return
	}

	err := upload.VerifyFileType(ctx.Query("fileType"), strings.Split(setting.Attachment.AllowedTypes, ","))
	if err != nil {
		ctx.Error(400, err.Error())
		return
	}

	if setting.Attachment.StoreType == storage.MinioStorageType {
		totalChunkCounts := ctx.QueryInt("totalChunkCounts")
		if totalChunkCounts > minio_ext.MaxPartsCount {
			ctx.Error(400, fmt.Sprintf("chunk counts(%d) is too much", totalChunkCounts))
			return
		}

		fileSize := ctx.QueryInt64("size")
		if fileSize > minio_ext.MaxMultipartPutObjectSize {
			ctx.Error(400, fmt.Sprintf("file size(%d) is too big", fileSize))
			return
		}

		uuid := gouuid.NewV4().String()
		uploadID, err := storage.NewMultiPartUpload(uuid)
		if err != nil {
			ctx.ServerError("NewMultipart", err)
			return
		}

		_, err = models.InsertFileChunk(&models.FileChunk{
			UUID:       uuid,
			UserID: 	ctx.User.ID,
			UploadID:   uploadID,
			Md5:  		ctx.Query("md5"),
			Size:		fileSize,
			TotalChunks:totalChunkCounts,
		})

		if err != nil {
			ctx.Error(500, fmt.Sprintf("InsertFileChunk: %v", err))
			return
		}

		ctx.JSON(200, map[string]string{
			"uuid": uuid,
			"uploadID":  uploadID,
		})
	} else {
		ctx.Error(404, "storage type is not enabled")
		return
	}
}

func GetMultipartUploadUrl(ctx *context.Context) {
	uuid := ctx.Query("uuid")
	uploadID := ctx.Query("uploadID")
	partNumber := ctx.QueryInt("chunkNumber")
	size := ctx.QueryInt64("size")

	if size > minio_ext.MinPartSize {
		ctx.Error(400, fmt.Sprintf("chunk size(%d) is too big", size))
		return
	}

	url,err := storage.GenMultiPartSignedUrl(uuid, uploadID, partNumber, size)
	if err != nil {
		ctx.Error(500, fmt.Sprintf("GenMultiPartSignedUrl failed: %v", err))
		return
	}

	ctx.JSON(200, map[string]string{
		"url": url,
	})
}

func CompleteMultipart(ctx *context.Context) {
	uuid := ctx.Query("uuid")
	uploadID := ctx.Query("uploadID")
	completedParts := ctx.Query("completedParts")

	fileChunk, err := models.GetFileChunkByUUID(uuid)
	if err != nil {
		if models.IsErrFileChunkNotExist(err) {
			ctx.Error(404)
		} else {
			ctx.ServerError("GetFileChunkByUUID", err)
		}
		return
	}

	_, err = storage.CompleteMultiPartUpload(uuid, uploadID, completedParts)
	if err != nil {
		ctx.Error(500, fmt.Sprintf("CompleteMultiPartUpload failed: %v", err))
		return
	}

	fileChunk.IsUploaded = models.FileUploaded

	err = models.UpdateFileChunk(fileChunk)
	if err != nil {
		ctx.Error(500, fmt.Sprintf("UpdateFileChunk: %v", err))
		return
	}

	_, err = models.InsertAttachment(&models.Attachment{
		UUID:       uuid,
		UploaderID: ctx.User.ID,
		IsPrivate:  true,
		Name:       ctx.Query("file_name"),
		Size:       ctx.QueryInt64("size"),
		DatasetID:  ctx.QueryInt64("dataset_id"),
	})

	if err != nil {
		ctx.Error(500, fmt.Sprintf("InsertAttachment: %v", err))
		return
	}

	ctx.JSON(200, map[string]string{
		"result_code": "0",
	})
}

func UpdateMultipart(ctx *context.Context) {
	uuid := ctx.Query("uuid")
	partNumber := ctx.QueryInt("partNumber")

	fileChunk, err := models.GetFileChunkByUUID(uuid)
	if err != nil {
		if models.IsErrFileChunkNotExist(err) {
			ctx.Error(404)
		} else {
			ctx.ServerError("GetFileChunkByUUID", err)
		}
		return
	}

	fileChunk.HasUploaded += "," + strconv.Itoa(partNumber)

	//todo:chunk parts

	err = models.UpdateFileChunk(fileChunk)
	if err != nil {
		ctx.Error(500, fmt.Sprintf("UpdateFileChunk: %v", err))
		return
	}

	ctx.JSON(200, map[string]string{
		"result_code": "0",
	})
}

func HandleUnDecompressAttachment() {
	attachs,err := models.GetUnDecompressAttachments()
	if err != nil {
		log.Error("GetUnDecompressAttachments failed:", err.Error())
		return
	}

	for _,attach := range attachs {
		err = worker.SendDecompressTask(contexExt.Background(), attach.UUID)
		if err != nil {
			log.Error("SendDecompressTask(%s) failed:%s", attach.UUID, err.Error())
		} else {
			attach.DecompressState = models.DecompressStateIng
			err = models.UpdateAttachment(attach)
			if err != nil {
				log.Error("UpdateAttachment state(%s) failed:%s", attach.UUID, err.Error())
			}
		}
	}

	return
}