mirror of
https://github.com/usememos/memos.git
synced 2024-09-21 23:05:59 +08:00
0894bf13d2
* Fix fail to open file while generate thumbnail * Fix for Uncontrolled data used in path expression check --------- Co-authored-by: Athurg Feng <athurg@gooth.org>
528 lines
20 KiB
Go
528 lines
20 KiB
Go
package server
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"path"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/disintegration/imaging"
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"github.com/labstack/echo/v4"
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"github.com/pkg/errors"
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"github.com/usememos/memos/api"
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"github.com/usememos/memos/common"
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"github.com/usememos/memos/common/log"
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"github.com/usememos/memos/plugin/storage/s3"
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"go.uber.org/zap"
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)
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const (
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// The upload memory buffer is 32 MiB.
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// It should be kept low, so RAM usage doesn't get out of control.
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// This is unrelated to maximum upload size limit, which is now set through system setting.
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maxUploadBufferSizeBytes = 32 << 20
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MebiByte = 1024 * 1024
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// thumbnailImagePath is the directory to store image thumbnails.
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thumbnailImagePath = ".thumbnail_cache"
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)
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var fileKeyPattern = regexp.MustCompile(`\{[a-z]{1,9}\}`)
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func (s *Server) registerResourceRoutes(g *echo.Group) {
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g.POST("/resource", func(c echo.Context) error {
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ctx := c.Request().Context()
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userID, ok := c.Get(getUserIDContextKey()).(int)
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if !ok {
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return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
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}
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resourceCreate := &api.ResourceCreate{}
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if err := json.NewDecoder(c.Request().Body).Decode(resourceCreate); err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, "Malformatted post resource request").SetInternal(err)
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}
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resourceCreate.CreatorID = userID
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// Only allow those external links with http prefix.
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if resourceCreate.ExternalLink != "" && !strings.HasPrefix(resourceCreate.ExternalLink, "http") {
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return echo.NewHTTPError(http.StatusBadRequest, "Invalid external link")
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}
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resource, err := s.Store.CreateResource(ctx, resourceCreate)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create resource").SetInternal(err)
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}
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if err := s.createResourceCreateActivity(c, resource); err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create activity").SetInternal(err)
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}
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return c.JSON(http.StatusOK, composeResponse(resource))
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})
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g.POST("/resource/blob", func(c echo.Context) error {
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ctx := c.Request().Context()
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userID, ok := c.Get(getUserIDContextKey()).(int)
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if !ok {
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return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
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}
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// This is the backend default max upload size limit.
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maxUploadSetting := s.Store.GetSystemSettingValueOrDefault(&ctx, api.SystemSettingMaxUploadSizeMiBName, "32")
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var settingMaxUploadSizeBytes int
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if settingMaxUploadSizeMiB, err := strconv.Atoi(maxUploadSetting); err == nil {
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settingMaxUploadSizeBytes = settingMaxUploadSizeMiB * MebiByte
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} else {
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log.Warn("Failed to parse max upload size", zap.Error(err))
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settingMaxUploadSizeBytes = 0
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}
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file, err := c.FormFile("file")
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to get uploading file").SetInternal(err)
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}
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if file == nil {
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return echo.NewHTTPError(http.StatusBadRequest, "Upload file not found").SetInternal(err)
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}
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if file.Size > int64(settingMaxUploadSizeBytes) {
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message := fmt.Sprintf("File size exceeds allowed limit of %d MiB", settingMaxUploadSizeBytes/MebiByte)
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return echo.NewHTTPError(http.StatusBadRequest, message).SetInternal(err)
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}
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if err := c.Request().ParseMultipartForm(maxUploadBufferSizeBytes); err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, "Failed to parse upload data").SetInternal(err)
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}
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filetype := file.Header.Get("Content-Type")
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size := file.Size
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sourceFile, err := file.Open()
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to open file").SetInternal(err)
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}
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defer sourceFile.Close()
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var resourceCreate *api.ResourceCreate
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systemSettingStorageServiceID, err := s.Store.FindSystemSetting(ctx, &api.SystemSettingFind{Name: api.SystemSettingStorageServiceIDName})
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if err != nil && common.ErrorCode(err) != common.NotFound {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find storage").SetInternal(err)
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}
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storageServiceID := api.DatabaseStorage
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if systemSettingStorageServiceID != nil {
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err = json.Unmarshal([]byte(systemSettingStorageServiceID.Value), &storageServiceID)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to unmarshal storage service id").SetInternal(err)
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}
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}
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publicID := common.GenUUID()
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if storageServiceID == api.DatabaseStorage {
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fileBytes, err := io.ReadAll(sourceFile)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to read file").SetInternal(err)
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}
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resourceCreate = &api.ResourceCreate{
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CreatorID: userID,
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Filename: file.Filename,
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Type: filetype,
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Size: size,
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Blob: fileBytes,
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}
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} else if storageServiceID == api.LocalStorage {
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// filepath.Join() should be used for local file paths,
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// as it handles the os-specific path separator automatically.
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// path.Join() always uses '/' as path separator.
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systemSettingLocalStoragePath, err := s.Store.FindSystemSetting(ctx, &api.SystemSettingFind{Name: api.SystemSettingLocalStoragePathName})
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if err != nil && common.ErrorCode(err) != common.NotFound {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find local storage path setting").SetInternal(err)
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}
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localStoragePath := "assets/{timestamp}_{filename}"
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if systemSettingLocalStoragePath != nil {
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err = json.Unmarshal([]byte(systemSettingLocalStoragePath.Value), &localStoragePath)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to unmarshal local storage path setting").SetInternal(err)
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}
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}
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filePath := filepath.FromSlash(localStoragePath)
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if !strings.Contains(filePath, "{filename}") {
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filePath = filepath.Join(filePath, "{filename}")
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}
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filePath = filepath.Join(s.Profile.Data, replacePathTemplate(filePath, file.Filename))
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dir, filename := filepath.Split(filePath)
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if err = os.MkdirAll(dir, os.ModePerm); err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create directory").SetInternal(err)
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}
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dst, err := os.Create(filePath)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create file").SetInternal(err)
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}
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defer dst.Close()
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_, err = io.Copy(dst, sourceFile)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to copy file").SetInternal(err)
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}
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resourceCreate = &api.ResourceCreate{
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CreatorID: userID,
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Filename: filename,
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Type: filetype,
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Size: size,
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InternalPath: filePath,
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}
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} else {
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storage, err := s.Store.FindStorage(ctx, &api.StorageFind{ID: &storageServiceID})
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find storage").SetInternal(err)
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}
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if storage.Type == api.StorageS3 {
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s3Config := storage.Config.S3Config
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s3Client, err := s3.NewClient(ctx, &s3.Config{
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AccessKey: s3Config.AccessKey,
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SecretKey: s3Config.SecretKey,
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EndPoint: s3Config.EndPoint,
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Region: s3Config.Region,
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Bucket: s3Config.Bucket,
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URLPrefix: s3Config.URLPrefix,
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URLSuffix: s3Config.URLSuffix,
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})
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to new s3 client").SetInternal(err)
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}
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filePath := s3Config.Path
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if !strings.Contains(filePath, "{filename}") {
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filePath = path.Join(filePath, "{filename}")
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}
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filePath = replacePathTemplate(filePath, file.Filename)
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_, filename := filepath.Split(filePath)
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link, err := s3Client.UploadFile(ctx, filePath, filetype, sourceFile)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to upload via s3 client").SetInternal(err)
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}
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resourceCreate = &api.ResourceCreate{
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CreatorID: userID,
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Filename: filename,
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Type: filetype,
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Size: size,
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ExternalLink: link,
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}
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} else {
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return echo.NewHTTPError(http.StatusInternalServerError, "Unsupported storage type")
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}
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}
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resourceCreate.PublicID = publicID
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resource, err := s.Store.CreateResource(ctx, resourceCreate)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create resource").SetInternal(err)
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}
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if err := s.createResourceCreateActivity(c, resource); err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to create activity").SetInternal(err)
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}
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return c.JSON(http.StatusOK, composeResponse(resource))
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})
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g.GET("/resource", func(c echo.Context) error {
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ctx := c.Request().Context()
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userID, ok := c.Get(getUserIDContextKey()).(int)
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if !ok {
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return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
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}
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resourceFind := &api.ResourceFind{
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CreatorID: &userID,
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}
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if limit, err := strconv.Atoi(c.QueryParam("limit")); err == nil {
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resourceFind.Limit = &limit
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}
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if offset, err := strconv.Atoi(c.QueryParam("offset")); err == nil {
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resourceFind.Offset = &offset
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}
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list, err := s.Store.FindResourceList(ctx, resourceFind)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to fetch resource list").SetInternal(err)
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}
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return c.JSON(http.StatusOK, composeResponse(list))
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})
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g.PATCH("/resource/:resourceId", func(c echo.Context) error {
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ctx := c.Request().Context()
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userID, ok := c.Get(getUserIDContextKey()).(int)
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if !ok {
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return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
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}
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resourceID, err := strconv.Atoi(c.Param("resourceId"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("resourceId"))).SetInternal(err)
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}
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resourceFind := &api.ResourceFind{
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ID: &resourceID,
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}
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resource, err := s.Store.FindResource(ctx, resourceFind)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find resource").SetInternal(err)
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}
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if resource.CreatorID != userID {
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return echo.NewHTTPError(http.StatusUnauthorized, "Unauthorized")
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}
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currentTs := time.Now().Unix()
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resourcePatch := &api.ResourcePatch{
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UpdatedTs: ¤tTs,
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}
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if err := json.NewDecoder(c.Request().Body).Decode(resourcePatch); err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, "Malformatted patch resource request").SetInternal(err)
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}
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if resourcePatch.ResetPublicID != nil && *resourcePatch.ResetPublicID {
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publicID := common.GenUUID()
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resourcePatch.PublicID = &publicID
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}
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resourcePatch.ID = resourceID
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resource, err = s.Store.PatchResource(ctx, resourcePatch)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to patch resource").SetInternal(err)
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}
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return c.JSON(http.StatusOK, composeResponse(resource))
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})
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g.DELETE("/resource/:resourceId", func(c echo.Context) error {
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ctx := c.Request().Context()
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userID, ok := c.Get(getUserIDContextKey()).(int)
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if !ok {
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return echo.NewHTTPError(http.StatusUnauthorized, "Missing user in session")
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}
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resourceID, err := strconv.Atoi(c.Param("resourceId"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("resourceId"))).SetInternal(err)
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}
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resource, err := s.Store.FindResource(ctx, &api.ResourceFind{
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ID: &resourceID,
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CreatorID: &userID,
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})
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to find resource").SetInternal(err)
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}
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if resource.CreatorID != userID {
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return echo.NewHTTPError(http.StatusUnauthorized, "Unauthorized")
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}
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if resource.InternalPath != "" {
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if err := os.Remove(resource.InternalPath); err != nil {
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log.Warn(fmt.Sprintf("failed to delete local file with path %s", resource.InternalPath), zap.Error(err))
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}
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thumbnailPath := path.Join(s.Profile.Data, thumbnailImagePath, resource.PublicID)
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if err := os.Remove(thumbnailPath); err != nil {
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log.Warn(fmt.Sprintf("failed to delete local thumbnail with path %s", thumbnailPath), zap.Error(err))
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}
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}
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resourceDelete := &api.ResourceDelete{
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ID: resourceID,
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}
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if err := s.Store.DeleteResource(ctx, resourceDelete); err != nil {
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if common.ErrorCode(err) == common.NotFound {
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return echo.NewHTTPError(http.StatusNotFound, fmt.Sprintf("Resource ID not found: %d", resourceID))
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}
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return echo.NewHTTPError(http.StatusInternalServerError, "Failed to delete resource").SetInternal(err)
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}
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return c.JSON(http.StatusOK, true)
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})
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}
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func (s *Server) registerResourcePublicRoutes(g *echo.Group) {
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// (DEPRECATED) use /r/:resourceId/:publicId/:filename instead.
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g.GET("/r/:resourceId/:publicId", func(c echo.Context) error {
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ctx := c.Request().Context()
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resourceID, err := strconv.Atoi(c.Param("resourceId"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("resourceId"))).SetInternal(err)
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}
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publicID, err := url.QueryUnescape(c.Param("publicId"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("publicID is invalid: %s", c.Param("publicId"))).SetInternal(err)
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}
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resourceFind := &api.ResourceFind{
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ID: &resourceID,
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PublicID: &publicID,
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GetBlob: true,
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}
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resource, err := s.Store.FindResource(ctx, resourceFind)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to find resource by ID: %v", resourceID)).SetInternal(err)
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}
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blob := resource.Blob
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if resource.InternalPath != "" {
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src, err := os.Open(resource.InternalPath)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to open the local resource: %s", resource.InternalPath)).SetInternal(err)
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}
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defer src.Close()
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blob, err = io.ReadAll(src)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to read the local resource: %s", resource.InternalPath)).SetInternal(err)
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}
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}
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c.Response().Writer.Header().Set(echo.HeaderCacheControl, "max-age=31536000, immutable")
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c.Response().Writer.Header().Set(echo.HeaderContentSecurityPolicy, "default-src 'self'")
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resourceType := strings.ToLower(resource.Type)
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if strings.HasPrefix(resourceType, "text") {
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resourceType = echo.MIMETextPlainCharsetUTF8
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} else if strings.HasPrefix(resourceType, "video") || strings.HasPrefix(resourceType, "audio") {
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http.ServeContent(c.Response(), c.Request(), resource.Filename, time.Unix(resource.UpdatedTs, 0), bytes.NewReader(blob))
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return nil
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}
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return c.Stream(http.StatusOK, resourceType, bytes.NewReader(blob))
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})
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g.GET("/r/:resourceId/:publicId/:filename", func(c echo.Context) error {
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ctx := c.Request().Context()
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resourceID, err := strconv.Atoi(c.Param("resourceId"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("ID is not a number: %s", c.Param("resourceId"))).SetInternal(err)
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}
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publicID, err := url.QueryUnescape(c.Param("publicId"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("publicID is invalid: %s", c.Param("publicId"))).SetInternal(err)
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}
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filename, err := url.QueryUnescape(c.Param("filename"))
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if err != nil {
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return echo.NewHTTPError(http.StatusBadRequest, fmt.Sprintf("filename is invalid: %s", c.Param("filename"))).SetInternal(err)
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}
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resourceFind := &api.ResourceFind{
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ID: &resourceID,
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PublicID: &publicID,
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Filename: &filename,
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GetBlob: true,
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}
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resource, err := s.Store.FindResource(ctx, resourceFind)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to find resource by ID: %v", resourceID)).SetInternal(err)
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}
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blob := resource.Blob
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if resource.InternalPath != "" {
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resourcePath := resource.InternalPath
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src, err := os.Open(resourcePath)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to open the local resource: %s", resourcePath)).SetInternal(err)
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}
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defer src.Close()
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blob, err = io.ReadAll(src)
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if err != nil {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to read the local resource: %s", resourcePath)).SetInternal(err)
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}
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}
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if c.QueryParam("thumbnail") == "1" && common.HasPrefixes(resource.Type, "image/png", "image/jpeg") {
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ext := filepath.Ext(filename)
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thumbnailDir := path.Join(s.Profile.Data, thumbnailImagePath)
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thumbnailPath := path.Join(thumbnailDir, resource.PublicID+ext)
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if _, err := os.Stat(thumbnailPath); err != nil {
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if !errors.Is(err, os.ErrNotExist) {
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return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to check thumbnail image stat: %s", thumbnailPath)).SetInternal(err)
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}
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reader := bytes.NewReader(blob)
|
|
src, err := imaging.Decode(reader)
|
|
if err != nil {
|
|
return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to decode thumbnail image: %s", thumbnailPath)).SetInternal(err)
|
|
}
|
|
thumbnailImage := imaging.Resize(src, 512, 0, imaging.Lanczos)
|
|
|
|
if err := os.MkdirAll(thumbnailDir, os.ModePerm); err != nil {
|
|
return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to create thumbnail dir: %s", thumbnailDir)).SetInternal(err)
|
|
}
|
|
|
|
if err := imaging.Save(thumbnailImage, thumbnailPath); err != nil {
|
|
return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to resize thumbnail image: %s", thumbnailPath)).SetInternal(err)
|
|
}
|
|
}
|
|
|
|
src, err := os.Open(thumbnailPath)
|
|
if err != nil {
|
|
return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to open the local resource: %s", thumbnailPath)).SetInternal(err)
|
|
}
|
|
defer src.Close()
|
|
blob, err = io.ReadAll(src)
|
|
if err != nil {
|
|
return echo.NewHTTPError(http.StatusInternalServerError, fmt.Sprintf("Failed to read the local resource: %s", thumbnailPath)).SetInternal(err)
|
|
}
|
|
}
|
|
|
|
c.Response().Writer.Header().Set(echo.HeaderCacheControl, "max-age=31536000, immutable")
|
|
c.Response().Writer.Header().Set(echo.HeaderContentSecurityPolicy, "default-src 'self'")
|
|
resourceType := strings.ToLower(resource.Type)
|
|
if strings.HasPrefix(resourceType, "text") {
|
|
resourceType = echo.MIMETextPlainCharsetUTF8
|
|
} else if strings.HasPrefix(resourceType, "video") || strings.HasPrefix(resourceType, "audio") {
|
|
http.ServeContent(c.Response(), c.Request(), resource.Filename, time.Unix(resource.UpdatedTs, 0), bytes.NewReader(blob))
|
|
return nil
|
|
}
|
|
return c.Stream(http.StatusOK, resourceType, bytes.NewReader(blob))
|
|
})
|
|
}
|
|
|
|
func (s *Server) createResourceCreateActivity(c echo.Context, resource *api.Resource) error {
|
|
ctx := c.Request().Context()
|
|
payload := api.ActivityResourceCreatePayload{
|
|
Filename: resource.Filename,
|
|
Type: resource.Type,
|
|
Size: resource.Size,
|
|
}
|
|
payloadBytes, err := json.Marshal(payload)
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to marshal activity payload")
|
|
}
|
|
activity, err := s.Store.CreateActivity(ctx, &api.ActivityCreate{
|
|
CreatorID: resource.CreatorID,
|
|
Type: api.ActivityResourceCreate,
|
|
Level: api.ActivityInfo,
|
|
Payload: string(payloadBytes),
|
|
})
|
|
if err != nil || activity == nil {
|
|
return errors.Wrap(err, "failed to create activity")
|
|
}
|
|
return err
|
|
}
|
|
|
|
func replacePathTemplate(path string, filename string) string {
|
|
t := time.Now()
|
|
path = fileKeyPattern.ReplaceAllStringFunc(path, func(s string) string {
|
|
switch s {
|
|
case "{filename}":
|
|
return filename
|
|
case "{timestamp}":
|
|
return fmt.Sprintf("%d", t.Unix())
|
|
case "{year}":
|
|
return fmt.Sprintf("%d", t.Year())
|
|
case "{month}":
|
|
return fmt.Sprintf("%02d", t.Month())
|
|
case "{day}":
|
|
return fmt.Sprintf("%02d", t.Day())
|
|
case "{hour}":
|
|
return fmt.Sprintf("%02d", t.Hour())
|
|
case "{minute}":
|
|
return fmt.Sprintf("%02d", t.Minute())
|
|
case "{second}":
|
|
return fmt.Sprintf("%02d", t.Second())
|
|
}
|
|
return s
|
|
})
|
|
return path
|
|
}
|