DetectTypeByHeader detects the MIME type of a file based on its header.

Where transient archives for multi-request (Range) downloads are stored to support chunked downloads.

Get allows you to get a user by its name or username. The provided id must be a string for username lookup or a uint for id lookup. If id is neither,

GetBackendScopes normalizes scopes for Bolt: SourceScope.Name is always the source filesystem path. Incoming rows (API) may use display name or path;

GetDirInfo returns directory information with index checks and extended attributes

GetDirectoryChildren retrieves all children of a directory for a specific source.

GetFsInfoCore is the consolidated implementation for both GetFsInfo and GetFsInfoViewableOnly

GetMediaDuration extracts the duration of a media file (audio or video) using ffprobe This method respects the concurrency limits, uses caching, and g

GetSourceNames returns all source names the user has access to (assumes backend-style scopes)

HasPasskeyMFA returns true if the user has at least one passkey credential configured.

HasPassword checks if the share is password protected

HasReachedUserLimit checks if a user has reached their download limit

IncrementUserDownload increments the download count for a specific user

InitUserDownloads initializes the user downloads map if needed

IsNeverWatchPath checks if a directory should not be re-indexed after the initial scan This is specifically for NeverWatchPaths - paths that are index

MakeUserDir makes the user directory according to settings.

MatchesSearchAuxiliaryFilters applies type/size/date constraints from SearchOptions without checking the file name. Used when SQLite has already filte

ParseFormat attempts to convert a string to a Format

ParseQuality attempts to convert a string to a Quality

ParseResizeMode attempts to convert a string to a ResizeMode

ReadImageFileDimensions reads image width and height without decoding the full image.

Release frees up resources

RemoveAllowUser removes a user from the allow list for a given source and index path.

RemoveApiToken removes a token hash mapping (used when deleting API keys).

RemoveDenyUser removes a user from the deny list for a given source and index path.

ResizeWithSize resizes an image with file size information for appropriate semaphore selection. Resize runs synchronously so the image semaphore accur

ResolveSourceKey maps a string that is either: - the configured source filesystem path (canonical Bolt / in-memory form for SourceScope.Name and sourc

Save persists the index and scanner information to the database and notifies clients via SSE.

SearchParsed runs indexing search using pre-built options (e.g. repeated HTTP term parameters plus filter prefix).

helps prevent SQLite page cache memory leaks by shrinking memory

String implements the Stringer interface.

String implements the Stringer interface.

SyncUserGroups updates a user's group memberships. It removes the user from groups not in the new list and adds them to new ones.

Update updates a user in the database.

Global image processor semaphore methods These are used to ensure FFmpeg and document operations also respect the global image processor limit

addSingleFile writes one file into the given zip or tar writer.

appendNameGlobSQL adds AND (name GLOB ? OR ...) or AND (name GLOB ? AND ...) when joinAnd is true.

authTokenExpiresUnix returns exp from JWT claims when set, otherwise the persisted int64.

authTokenIssuedUnix returns iat from JWT claims when set, otherwise the persisted int64 (e.g. loaded from DB).

checkExecutable is an internal helper function to find and validate an executable. It checks a specific path if provided, otherwise falls back to sear

* Range-based fetch; updates downloadManager progress for downloadId. * @returns {Promise<Blob|null>}

computeArchiveSize returns the combined size of the given paths, respecting access rules. Paths denied by access are skipped (not counted).

convertRasterToPNG decodes any raster format and re-encodes as PNG

copySingleFile handles copying a single file.

createTarGz writes a tar.gz archive into w containing the given paths; access rules apply.

deleteFromCache removes the link (by hash) from both caches. It acquires s.mu.

detectEmbeddedSubtitles uses ffprobe to find embedded subtitle tracks Always runs ffprobe - results are cached for performance

determinePreviewType determines what type of preview generation is needed

executeScan runs one scan for this scanner (invoked only from the per-index scheduler).

extractArchivedDir creates a directory from an archive entry and reapplies mode and mtime.

extractArchivedRegularFile writes one regular file from src (closed by this function) and reapplies mode and mtime.

extractArchivedSymlink creates a symlink after validating the target stays under destRoot.

extractAudioMetadata extracts metadata from an audio file using dhowden/tag and optionally extracts duration using the ffmpeg service with concurrency

first checks for cookie then checks for header Authorization as Bearer token then checks for query parameter

extractVideoMetadata extracts duration from video files using ffprobe If ffmpegService is nil, a new service will be created (for backward compatibili

This removes files whose names match any extension in hideFileExt.

Define a function to filter out restricted fields for non-admin users

* Generate a unique ID for a notification * @returns {string}