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| -rw-r--r-- | include/VBox/GuestHost/DragAndDrop.h | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/include/VBox/GuestHost/DragAndDrop.h b/include/VBox/GuestHost/DragAndDrop.h new file mode 100644 index 00000000..e986b9ad --- /dev/null +++ b/include/VBox/GuestHost/DragAndDrop.h @@ -0,0 +1,332 @@ +/* $Id: DragAndDrop.h $ */ +/** @file + * DnD - Shared functions between host and guest. + */ + +/* + * Copyright (C) 2014-2020 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + +#ifndef VBOX_INCLUDED_GuestHost_DragAndDrop_h +#define VBOX_INCLUDED_GuestHost_DragAndDrop_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/assert.h> +#include <iprt/fs.h> +#include <iprt/list.h> + +/** DnDURIDroppedFiles flags. */ +typedef uint32_t DNDURIDROPPEDFILEFLAGS; + +/** No flags specified. */ +#define DNDURIDROPPEDFILE_FLAGS_NONE 0 + +/** + * Structure for keeping a DnD dropped files entry. + */ +typedef struct DNDDROPPEDFILESENTRY +{ + RTLISTNODE Node; + char *pszPath; +} DNDDROPPEDFILESENTRY; +/** Pointer to a DnD dropped files entry. */ +typedef DNDDROPPEDFILESENTRY *PDNDDROPPEDFILESENTRY; + +/** + * Structure for maintaining a "dropped files" directory + * on the host or guest. This will contain all received files & directories + * for a single drag and drop operation. + * + * In case of a failed drag and drop operation this can also + * perform a gentle rollback if required. + */ +typedef struct DNDDROPPEDFILES +{ + /** Open flags. */ + uint32_t m_fOpen; + /** Directory handle for drop directory. */ + RTDIR m_hDir; + /** Absolute path to drop directory. */ + char *pszPathAbs; + /** List for holding created directories in the case of a rollback. */ + RTLISTANCHOR m_lstDirs; + /** List for holding created files in the case of a rollback. */ + RTLISTANCHOR m_lstFiles; +} DNDDROPPEDFILES; +/** Pointer to a DnD dropped files directory. */ +typedef DNDDROPPEDFILES *PDNDDROPPEDFILES; + +int DnDDroppedFilesInit(PDNDDROPPEDFILES pDF); +int DnDDroppedFilesInitEx(PDNDDROPPEDFILES pDF, const char *pszPath, DNDURIDROPPEDFILEFLAGS fFlags); +void DnDDroppedFilesDestroy(PDNDDROPPEDFILES pDF); +int DnDDroppedFilesAddFile(PDNDDROPPEDFILES pDF, const char *pszFile); +int DnDDroppedFilesAddDir(PDNDDROPPEDFILES pDF, const char *pszDir); +int DnDDroppedFilesClose(PDNDDROPPEDFILES pDF); +bool DnDDroppedFilesIsOpen(PDNDDROPPEDFILES pDF); +int DnDDroppedFilesOpenEx(PDNDDROPPEDFILES pDF, const char *pszPath, DNDURIDROPPEDFILEFLAGS fFlags); +int DnDDroppedFilesOpenTemp(PDNDDROPPEDFILES pDF, DNDURIDROPPEDFILEFLAGS fFlags); +const char *DnDDroppedFilesGetDirAbs(PDNDDROPPEDFILES pDF); +int DnDDroppedFilesReopen(PDNDDROPPEDFILES pDF); +int DnDDroppedFilesReset(PDNDDROPPEDFILES pDF, bool fDelete); +int DnDDroppedFilesRollback(PDNDDROPPEDFILES pDF); + +bool DnDMIMEHasFileURLs(const char *pcszFormat, size_t cchFormatMax); +bool DnDMIMENeedsDropDir(const char *pcszFormat, size_t cchFormatMax); + +int DnDPathValidate(const char *pcszPath, bool fMustExist); + +/** DnD path conversion flags. */ +typedef uint32_t DNDPATHCONVERTFLAGS; + +/** No flags specified. + * This will convert the path to the universal tansport style. */ +#define DNDPATHCONVERT_FLAGS_TRANSPORT 0 +/** Converts the path to a OS-dependent path. */ +#define DNDPATHCONVERT_FLAGS_TO_DOS RT_BIT(0) + +/** Mask of all valid DnD path conversion flags. */ +#define DNDPATHCONVERT_FLAGS_VALID_MASK UINT32_C(0x1) + +int DnDPathConvert(char *pszPath, size_t cbPath, DNDPATHCONVERTFLAGS fFlags); +int DnDPathSanitizeFileName(char *pszPath, size_t cbPath); +int DnDPathRebase(const char *pcszPathAbs, const char *pcszBaseOld, const char *pcszBaseNew, char **ppszPath); + +/** DnDTransferObject flags. */ +typedef uint32_t DNDTRANSFEROBJECTFLAGS; + +/** No flags specified. */ +#define DNDTRANSFEROBJECT_FLAGS_NONE 0 + +/** Mask of all valid DnD transfer object flags. */ +#define DNDTRANSFEROBJECT_FLAGS_VALID_MASK UINT32_C(0x0) + +/** + * Enumeration for specifying a transfer object type. + */ +typedef enum DNDTRANSFEROBJTYPE +{ + /** Unknown type, do not use. */ + DNDTRANSFEROBJTYPE_UNKNOWN = 0, + /** Object is a file. */ + DNDTRANSFEROBJTYPE_FILE, + /** Object is a directory. */ + DNDTRANSFEROBJTYPE_DIRECTORY, + /** The usual 32-bit hack. */ + DNDTRANSFEROBJTYPE_32BIT_HACK = 0x7fffffff +} DNDTRANSFEROBJTYPE; + +/** + * Enumeration for specifying a path style. + */ +typedef enum DNDTRANSFEROBJPATHSTYLE +{ + /** Transport style (UNIX-y), the default. */ + DNDTRANSFEROBJPATHSTYLE_TRANSPORT = 0, + /** DOS style, containing back slashes. */ + DNDTRANSFEROBJPATHSTYLE_DOS, + /** The usual 32-bit hack. */ + DNDTRANSFEROBJPATHSTYLE_32BIT_HACK = 0x7fffffff +} DNDTRANSFEROBJPATHSTYLE; + +/** + * Structure for keeping a DnD transfer object. + */ +typedef struct DNDTRANSFEROBJECT +{ + RTLISTNODE Node; + /** The object's type. */ + DNDTRANSFEROBJTYPE enmType; + /** Index (in characters, UTF-8) at which the first destination segment starts. */ + uint16_t idxDst; + /** Allocated path. Includdes the absolute source path (if any) + destination segments. + * Transport (IPRT) style. */ + char *pszPath; + + /** Union containing data depending on the object's type. */ + union + { + /** Structure containing members for objects that + * are files. */ + struct + { + /** File handle. */ + RTFILE hFile; + /** File system object information of this file. */ + RTFSOBJINFO objInfo; + /** Bytes to proces for reading/writing. */ + uint64_t cbToProcess; + /** Bytes processed reading/writing. */ + uint64_t cbProcessed; + } File; + struct + { + /** Directory handle. */ + RTDIR hDir; + /** File system object information of this directory. */ + RTFSOBJINFO objInfo; + } Dir; + } u; +} DNDTRANSFEROBJECT; +/** Pointer to a DnD transfer object. */ +typedef DNDTRANSFEROBJECT *PDNDTRANSFEROBJECT; + +int DnDTransferObjectInit(PDNDTRANSFEROBJECT pObj); +int DnDTransferObjectInitEx(PDNDTRANSFEROBJECT pObj, DNDTRANSFEROBJTYPE enmType, const char *pcszPathSrcAbs, const char *pcszPathDst); +void DnDTransferObjectDestroy(PDNDTRANSFEROBJECT pObj); +void DnDTransferObjectClose(PDNDTRANSFEROBJECT pObj); +void DnDTransferObjectReset(PDNDTRANSFEROBJECT pObj); +const char *DnDTransferObjectGetSourcePath(PDNDTRANSFEROBJECT pObj); +const char *DnDTransferObjectGetDestPath(PDNDTRANSFEROBJECT pObj); +int DnDTransferObjectGetDestPathEx(PDNDTRANSFEROBJECT pObj, DNDTRANSFEROBJPATHSTYLE enmStyle, char *pszBuf, size_t cbBuf); +RTFMODE DnDTransferObjectGetMode(PDNDTRANSFEROBJECT pObj); +uint64_t DnDTransferObjectGetProcessed(PDNDTRANSFEROBJECT pObj); +uint64_t DnDTransferObjectGetSize(PDNDTRANSFEROBJECT pObj); +DNDTRANSFEROBJTYPE DnDTransferObjectGetType(PDNDTRANSFEROBJECT pObj); +int DnDTransferObjectSetSize(PDNDTRANSFEROBJECT pObj, uint64_t cbSize); +bool DnDTransferObjectIsComplete(PDNDTRANSFEROBJECT pObj); +bool DnDTransferObjectIsOpen(PDNDTRANSFEROBJECT pObj); +int DnDTransferObjectOpen(PDNDTRANSFEROBJECT pObj, uint64_t fOpen, RTFMODE fMode, DNDTRANSFEROBJECTFLAGS fFlags); +int DnDTransferObjectQueryInfo(PDNDTRANSFEROBJECT pObj); +int DnDTransferObjectRead(PDNDTRANSFEROBJECT pObj, void *pvBuf, size_t cbBuf, uint32_t *pcbRead); +int DnDTransferObjectWrite(PDNDTRANSFEROBJECT pObj, const void *pvBuf, size_t cbBuf, uint32_t *pcbWritten); + +/** Defines the default chunk size of DnD data transfers. + * Supported on all (older) Guest Additions which also support DnD. */ +#define DND_DEFAULT_CHUNK_SIZE _64K + +/** Separator for a formats list. */ +#define DND_FORMATS_SEPARATOR_STR "\r\n" + +/** Default URI list path separator, if not specified otherwise. + * + * This is there for hysterical raisins, to not break older Guest Additions. + ** @todo Get rid of this. */ +#define DND_PATH_SEPARATOR_STR "\r\n" + +/** DnDTransferList flags. */ +typedef uint32_t DNDTRANSFERLISTFLAGS; + +/** No flags specified. */ +#define DNDTRANSFERLIST_FLAGS_NONE 0 +/** Enables recurisve directory handling. */ +#define DNDTRANSFERLIST_FLAGS_RECURSIVE RT_BIT(0) +/** Resolve all symlinks. Currently not supported and will be ignored. */ +#define DNDTRANSFERLIST_FLAGS_RESOLVE_SYMLINKS RT_BIT(1) +/** Keep the files + directory entries open while + * being in this list. */ +#define DNDTRANSFERLIST_FLAGS_KEEP_OPEN RT_BIT(2) +/** Lazy loading: Only enumerate sub directories when needed. Not implemented yet. + ** @todo Implement lazy loading. */ +#define DNDTRANSFERLIST_FLAGS_LAZY RT_BIT(3) + +/** Mask of all valid DnD transfer list flags. */ +#define DNDTRANSFERLIST_FLAGS_VALID_MASK UINT32_C(0xF) + +/** + * Enumeration for specifying a transfer list format. + */ +typedef enum DNDTRANSFERLISTFMT +{ + /** Unknown format, do not use. */ + DNDTRANSFERLISTFMT_UNKNOWN = 0, + /** Native format. */ + DNDTRANSFERLISTFMT_NATIVE, + /** URI format. */ + DNDTRANSFERLISTFMT_URI, + /** The usual 32-bit hack. */ + DNDTRANSFERLISTFMT_32BIT_HACK = 0x7fffffff +} DNDTRANSFERLISTFMT; + +/** + * Structure for keeping a DnD transfer list root entry. + * + * A root entry always is relative to the parent list maintaining it. + */ +typedef struct DNDTRANSFERLISTROOT +{ + /** List node. */ + RTLISTNODE Node; + /** Pointer to the allocated root path. + * - Relative to the list's root path + * - Always ends with a trailing slash + * - Always stored in transport style (UNIX-y). */ + char *pszPathRoot; +} DNDTRANSFERLISTROOT; +/** Pointer to a DnD list root entry. */ +typedef DNDTRANSFERLISTROOT *PDNDTRANSFERLISTROOT; + +/** + * Struct for keeping a DnD transfer list. + * + * All entries must share a common (absolute) root path. For different root paths another transfer list is needed. + */ +typedef struct DNDTRANSFERLIST +{ + /** Absolute root path of this transfer list, in native path style. + * Always ends with a separator. */ + char *pszPathRootAbs; + /** List of all relative (to \a pszPathRootAbs) top-level file/directory entries, of type DNDTRANSFERLISTROOT. + * Note: All paths are stored internally in transport style (UNIX paths) for + * easier conversion/handling! */ + RTLISTANCHOR lstRoot; + /** Total number of all transfer root entries. */ + uint64_t cRoots; + /** List of all transfer objects added, of type DNDTRANSFEROBJECT. + * + * The order of objects being added is crucial for traversing the tree. + * In other words, sub directories must come first before its contents. */ + RTLISTANCHOR lstObj; + /** Total number of all transfer objects. */ + uint64_t cObj; + /** Total size of all transfer objects, that is, the file + * size of all objects (in bytes). + * Note: Do *not* size_t here, as we also want to support large files + * on 32-bit guests. */ + uint64_t cbObjTotal; +} DNDTRANSFERLIST; +/** Pointer to a DNDTRANSFERLIST struct. */ +typedef DNDTRANSFERLIST *PDNDTRANSFERLIST; + +int DnDTransferListInit(PDNDTRANSFERLIST pList); +int DnDTransferListInitEx(PDNDTRANSFERLIST pList, const char *pcszRootPathAbs, DNDTRANSFERLISTFMT enmFmt); +void DnDTransferListDestroy(PDNDTRANSFERLIST pList); +void DnDTransferListReset(PDNDTRANSFERLIST pList); + +int DnDTransferListAppendPath(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, const char *pszPath, DNDTRANSFERLISTFLAGS fFlags); +int DnDTransferListAppendPathsFromBuffer(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, const char *pszPaths, size_t cbPaths, const char *pcszSeparator, DNDTRANSFERLISTFLAGS fFlags); +int DnDTransferListAppendPathsFromArray(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, const char * const *papcszPaths, size_t cPaths, DNDTRANSFERLISTFLAGS fFlags); +int DnDTransferListAppendRootsFromBuffer(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, const char *pszPaths, size_t cbPaths, const char *pcszSeparator, DNDTRANSFERLISTFLAGS fFlags); +int DnDTransferListAppendRootsFromArray(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, const char * const *papcszPaths, size_t cPaths, DNDTRANSFERLISTFLAGS fFlags); + +int DnDTransferListGetRootsEx(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, const char *pcszPathBase, const char *pcszSeparator, char **ppszBuffer, size_t *pcbBuffer); +int DnDTransferListGetRoots(PDNDTRANSFERLIST pList, DNDTRANSFERLISTFMT enmFmt, char **ppszBuffer, size_t *pcbBuffer); +uint64_t DnDTransferListGetRootCount(PDNDTRANSFERLIST pList); +const char *DnDTransferListGetRootPathAbs(PDNDTRANSFERLIST pList); + +PDNDTRANSFEROBJECT DnDTransferListObjGetFirst(PDNDTRANSFERLIST pList); +void DnDTransferListObjRemove(PDNDTRANSFERLIST pList, PDNDTRANSFEROBJECT pObj); +void DnDTransferListObjRemoveFirst(PDNDTRANSFERLIST pList); +uint64_t DnDTransferListObjCount(PDNDTRANSFERLIST pList); +uint64_t DnDTransferListObjTotalBytes(PDNDTRANSFERLIST pList); + +#endif /* !VBOX_INCLUDED_GuestHost_DragAndDrop_h */ + |