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Diffstat (limited to 'src/VBox/Storage/VISO.cpp')
| -rw-r--r-- | src/VBox/Storage/VISO.cpp | 1119 |
1 files changed, 1119 insertions, 0 deletions
diff --git a/src/VBox/Storage/VISO.cpp b/src/VBox/Storage/VISO.cpp new file mode 100644 index 00000000..38d6fd14 --- /dev/null +++ b/src/VBox/Storage/VISO.cpp @@ -0,0 +1,1119 @@ +/* $Id: VISO.cpp $ */ +/** @file + * VISO - Virtual ISO disk image, Core Code. + */ + +/* + * Copyright (C) 2017-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_VD +#include <VBox/vd-plugin.h> +#include <VBox/err.h> + +#include <VBox/log.h> +#include <iprt/assert.h> +#include <iprt/ctype.h> +#include <iprt/fsisomaker.h> +#include <iprt/getopt.h> +#include <iprt/mem.h> +#include <iprt/path.h> +#include <iprt/string.h> +#include <iprt/uuid.h> + +#include "VDBackends.h" +#include "VDBackendsInline.h" + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** The maximum file size. */ +#if ARCH_BITS >= 64 +# define VISO_MAX_FILE_SIZE _32M +#else +# define VISO_MAX_FILE_SIZE _8M +#endif + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ + +/** + * VBox ISO maker image instance. + */ +typedef struct VISOIMAGE +{ + /** The ISO maker output file handle. + * This is NIL if in VD_OPEN_FLAGS_INFO mode. */ + RTVFSFILE hIsoFile; + /** The image size. */ + uint64_t cbImage; + /** The UUID ofr the image. */ + RTUUID Uuid; + + /** Open flags passed by VD layer. */ + uint32_t fOpenFlags; + /** Image name. Allocation follows the region list, no need to free. */ + const char *pszFilename; + /** The parent director of pszFilename. + * Allocation follows the region list, no need to free. */ + const char *pszCwd; + + /** I/O interface. */ + PVDINTERFACEIOINT pIfIo; + /** Error interface. */ + PVDINTERFACEERROR pIfError; + + /** Internal region list (variable size). */ + VDREGIONLIST RegionList; +} VISOIMAGE; +/** Pointer to an VBox ISO make image instance. */ +typedef VISOIMAGE *PVISOIMAGE; + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** NULL-terminated array of supported file extensions. */ +static const VDFILEEXTENSION g_aVBoXIsoMakerFileExtensions[] = +{ + //{ "vbox-iso-maker", VDTYPE_OPTICAL_DISC }, - clumsy. + { "viso", VDTYPE_OPTICAL_DISC }, + { NULL, VDTYPE_INVALID } +}; + +/** NULL-terminated array of configuration option. */ +static const VDCONFIGINFO s_aVisoConfigInfo[] = +{ + /* Options for VMDK raw disks */ + { "UnattendedInstall", NULL, VDCFGVALUETYPE_STRING, VD_CFGKEY_EXPERT }, + /* End of options list */ + { NULL, NULL, VDCFGVALUETYPE_INTEGER, 0 } +}; + +/** + * Parses the UUID that follows the marker argument. + * + * @returns IPRT status code. + * @param pszMarker The marker. + * @param pUuid Where to return the UUID. + */ +static int visoParseUuid(char *pszMarker, PRTUUID pUuid) +{ + /* Skip the marker. */ + char ch; + while ( (ch = *pszMarker) != '\0' + && !RT_C_IS_SPACE(ch) + && ch != ':' + && ch != '=') + pszMarker++; + + /* Skip chars before the value. */ + if ( ch == ':' + || ch == '=') + ch = *++pszMarker; + else + while (RT_C_IS_SPACE(ch)) + ch = *++pszMarker; + const char * const pszUuid = pszMarker; + + /* Find the end of the UUID value. */ + while ( ch != '\0' + && !RT_C_IS_SPACE(ch)) + ch = *++pszMarker; + + /* Validate the value (temporarily terminate the value string) */ + *pszMarker = '\0'; + int rc = RTUuidFromStr(pUuid, pszUuid); + if (RT_SUCCESS(rc)) + { + *pszMarker = ch; + return VINF_SUCCESS; + } + + /* Complain and return VERR_VD_IMAGE_CORRUPTED to indicate we've identified + the right image format, but the producer got something wrong. */ + if (pszUuid != pszMarker) + LogRel(("visoParseUuid: Malformed UUID '%s': %Rrc\n", pszUuid, rc)); + else + LogRel(("visoParseUuid: Empty/missing UUID!\n")); + *pszMarker = ch; + + return VERR_VD_IMAGE_CORRUPTED; +} + + +static int visoProbeWorker(const char *pszFilename, PVDINTERFACEIOINT pIfIo, PRTUUID pUuid) +{ + PVDIOSTORAGE pStorage = NULL; + int rc = vdIfIoIntFileOpen(pIfIo, pszFilename, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE, &pStorage); + if (RT_SUCCESS(rc)) + { + /* + * Read the first part of the file. + */ + uint64_t cbFile = 0; + rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile); + if (RT_SUCCESS(rc)) + { + char szChunk[_1K]; + size_t cbToRead = (size_t)RT_MIN(sizeof(szChunk) - 1, cbFile); + rc = vdIfIoIntFileReadSync(pIfIo, pStorage, 0 /*off*/, szChunk, cbToRead); + if (RT_SUCCESS(rc)) + { + szChunk[cbToRead] = '\0'; + + /* + * Skip leading spaces and check for the eye-catcher. + */ + char *psz = szChunk; + while (RT_C_IS_SPACE(*psz)) + psz++; + if (strncmp(psz, RT_STR_TUPLE("--iprt-iso-maker-file-marker")) == 0) + { + rc = visoParseUuid(psz, pUuid); + if (RT_SUCCESS(rc)) + { + /* + * Check the file size. + */ + if (cbFile <= VISO_MAX_FILE_SIZE) + rc = VINF_SUCCESS; + else + { + LogRel(("visoProbeWorker: VERR_VD_INVALID_SIZE - cbFile=%#RX64 cbMaxFile=%#RX64\n", + cbFile, (uint64_t)VISO_MAX_FILE_SIZE)); + rc = VERR_VD_INVALID_SIZE; + } + } + else + rc = VERR_VD_IMAGE_CORRUPTED; + } + else + rc = VERR_VD_GEN_INVALID_HEADER; + } + } + vdIfIoIntFileClose(pIfIo, pStorage); + } + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnProbe} + */ +static DECLCALLBACK(int) visoProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage, + VDTYPE enmDesiredType, VDTYPE *penmType) +{ + /* + * Validate input. + */ + AssertPtrReturn(penmType, VERR_INVALID_POINTER); + *penmType = VDTYPE_INVALID; + + AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); + AssertReturn(*pszFilename, VERR_INVALID_POINTER); + + PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage); + AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER); + + RT_NOREF(pVDIfsDisk); + + /* + * We can only fake DVD stuff, so fail if the desired type doesn't match up + */ + if (enmDesiredType != VDTYPE_OPTICAL_DISC && enmDesiredType != VDTYPE_INVALID) + return VERR_VD_GEN_INVALID_HEADER; /* Caller has strict, though undocument, status code expectations. */ + + /* + * Share worker with visoOpen and visoSetFlags. + */ + RTUUID UuidIgn; + int rc = visoProbeWorker(pszFilename, pIfIo, &UuidIgn); + if (RT_SUCCESS(rc)) + *penmType = VDTYPE_OPTICAL_DISC; + else if (rc == VERR_VD_IMAGE_CORRUPTED || rc == VERR_VD_INVALID_SIZE) + *penmType = VDTYPE_OPTICAL_DISC; + else + rc = VERR_VD_GEN_INVALID_HEADER; /* Caller has strict, though undocument, status code expectations. */ + + LogFlowFunc(("returns %Rrc - *penmType=%d\n", rc, *penmType)); + return rc; +} + + +/** + * Worker for visoOpen and visoSetOpenFlags that creates a VFS file for the ISO. + * + * This also updates cbImage and the Uuid members. + * + * @returns VBox status code. + * @param pThis The VISO image instance. + */ +static int visoOpenWorker(PVISOIMAGE pThis) +{ + /* + * Open the file and read it into memory. + */ + PVDIOSTORAGE pStorage = NULL; + int rc = vdIfIoIntFileOpen(pThis->pIfIo, pThis->pszFilename, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE, &pStorage); + if (RT_FAILURE(rc)) + { + LogRel(("VISO: Unable to open file '%s': %Rrc\n", pThis->pszFilename, rc)); + return rc; + } + + LogRel(("VISO: Handling file '%s'\n", pThis->pszFilename)); + + /* + * Read the file into memory, prefixing it with a dummy command name. + */ + uint64_t cbFile = 0; + rc = vdIfIoIntFileGetSize(pThis->pIfIo, pStorage, &cbFile); + if (RT_SUCCESS(rc)) + { + if (cbFile <= VISO_MAX_FILE_SIZE) + { + static char const s_szCmdPrefix[] = "VBox-Iso-Maker "; + + char *pszContent = (char *)RTMemTmpAlloc(sizeof(s_szCmdPrefix) + cbFile); + if (pszContent) + { + char *pszReadDst = &pszContent[sizeof(s_szCmdPrefix) - 1]; + rc = vdIfIoIntFileReadSync(pThis->pIfIo, pStorage, 0 /*off*/, pszReadDst, (size_t)cbFile); + if (RT_SUCCESS(rc)) + { + /* + * Check the file marker and get the UUID that follows it. + * Ignore leading blanks. + */ + pszReadDst[(size_t)cbFile] = '\0'; + memcpy(pszContent, s_szCmdPrefix, sizeof(s_szCmdPrefix) - 1); + + while (RT_C_IS_SPACE(*pszReadDst)) + pszReadDst++; + if (strncmp(pszReadDst, RT_STR_TUPLE("--iprt-iso-maker-file-marker")) == 0) + { + rc = visoParseUuid(pszReadDst, &pThis->Uuid); + if (RT_SUCCESS(rc)) + { + /* + * Make sure it's valid UTF-8 before letting + */ + rc = RTStrValidateEncodingEx(pszContent, sizeof(s_szCmdPrefix) + cbFile, + RTSTR_VALIDATE_ENCODING_EXACT_LENGTH + | RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED); + if (RT_SUCCESS(rc)) + { + /* + * Convert it into an argument vector. + * Free the content afterwards to reduce memory pressure. + */ + uint32_t fGetOpt = strncmp(pszReadDst, RT_STR_TUPLE("--iprt-iso-maker-file-marker-ms")) != 0 + ? RTGETOPTARGV_CNV_QUOTE_BOURNE_SH : RTGETOPTARGV_CNV_QUOTE_MS_CRT; + fGetOpt |= RTGETOPTARGV_CNV_MODIFY_INPUT; + char **papszArgs; + int cArgs; + rc = RTGetOptArgvFromString(&papszArgs, &cArgs, pszContent, fGetOpt, NULL); + + if (RT_SUCCESS(rc)) + { + /* + * Open the parent directory and use that as CWD for relative references. + */ + RTVFSDIR hVfsCwd; + rc = RTVfsChainOpenDir(pThis->pszCwd, 0 /*fOpen*/, &hVfsCwd, NULL, NULL); + if (RT_SUCCESS(rc)) + { + /* + * Try instantiate the ISO image maker. + * Free the argument vector afterward to reduce memory pressure. + */ + RTVFSFILE hVfsFile; + RTERRINFOSTATIC ErrInfo; + rc = RTFsIsoMakerCmdEx(cArgs, papszArgs, hVfsCwd, pThis->pszCwd, + &hVfsFile, RTErrInfoInitStatic(&ErrInfo)); + + RTVfsDirRelease(hVfsCwd); + + RTGetOptArgvFreeEx(papszArgs, fGetOpt); + papszArgs = NULL; + + if (RT_SUCCESS(rc)) + { + uint64_t cbImage; + rc = RTVfsFileQuerySize(hVfsFile, &cbImage); + if (RT_SUCCESS(rc)) + { + /* + * Update the state. + */ + pThis->cbImage = cbImage; + pThis->RegionList.aRegions[0].cRegionBlocksOrBytes = cbImage; + + pThis->hIsoFile = hVfsFile; + hVfsFile = NIL_RTVFSFILE; + + rc = VINF_SUCCESS; + LogRel(("VISO: %'RU64 bytes (%#RX64) - %s\n", cbImage, cbImage, pThis->pszFilename)); + } + + RTVfsFileRelease(hVfsFile); + } + else if (RTErrInfoIsSet(&ErrInfo.Core)) + { + LogRel(("visoOpenWorker: RTFsIsoMakerCmdEx failed: %Rrc - %s\n", rc, ErrInfo.Core.pszMsg)); + vdIfError(pThis->pIfError, rc, RT_SRC_POS, "VISO: %s", ErrInfo.Core.pszMsg); + } + else + { + LogRel(("visoOpenWorker: RTFsIsoMakerCmdEx failed: %Rrc\n", rc)); + vdIfError(pThis->pIfError, rc, RT_SRC_POS, "VISO: RTFsIsoMakerCmdEx failed: %Rrc", rc); + } + } + else + vdIfError(pThis->pIfError, rc, RT_SRC_POS, + "VISO: Failed to open parent dir of: %s", pThis->pszFilename); + } + else + vdIfError(pThis->pIfError, rc, RT_SRC_POS, "VISO: RTGetOptArgvFromString failed: %Rrc", rc); + } + else + vdIfError(pThis->pIfError, rc, RT_SRC_POS, "VISO: Invalid file encoding"); + } + else + vdIfError(pThis->pIfError, rc, RT_SRC_POS, "VISO: Parsing UUID failed: %Rrc", rc); + } + else + rc = VERR_VD_GEN_INVALID_HEADER; + } + else + vdIfError(pThis->pIfError, rc, RT_SRC_POS, "VISO: Reading file failed: %Rrc", rc); + + RTMemTmpFree(pszContent); + } + else + rc = VERR_NO_TMP_MEMORY; + } + else + { + LogRel(("visoOpen: VERR_VD_INVALID_SIZE - cbFile=%#RX64 cbMaxFile=%#RX64\n", + cbFile, (uint64_t)VISO_MAX_FILE_SIZE)); + rc = VERR_VD_INVALID_SIZE; + } + } + + if (RT_FAILURE(rc)) + LogRel(("VISO: Handling of file '%s' failed with %Rrc\n", pThis->pszFilename, rc)); + + vdIfIoIntFileClose(pThis->pIfIo, pStorage); + return rc; +} + + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnOpen} + */ +static DECLCALLBACK(int) visoOpen(const char *pszFilename, unsigned uOpenFlags, PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage, + VDTYPE enmType, void **ppBackendData) +{ + uint32_t const fOpenFlags = uOpenFlags; + LogFlowFunc(("pszFilename='%s' fOpenFlags=%#x pVDIfsDisk=%p pVDIfsImage=%p enmType=%u ppBackendData=%p\n", + pszFilename, fOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData)); + + /* + * Validate input. + */ + AssertPtrReturn(ppBackendData, VERR_INVALID_POINTER); + *ppBackendData = NULL; + + AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); + AssertReturn(*pszFilename, VERR_INVALID_POINTER); + + AssertReturn(!(fOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_FLAGS); + + PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage); + AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER); + + PVDINTERFACEERROR pIfError = VDIfErrorGet(pVDIfsDisk); + + AssertReturn(enmType == VDTYPE_OPTICAL_DISC, VERR_NOT_SUPPORTED); + + /* + * Allocate and initialize the backend image instance data. + */ + int rc; + size_t cbFilename = strlen(pszFilename) + 1; + PVISOIMAGE pThis = (PVISOIMAGE)RTMemAllocZ(RT_UOFFSETOF(VISOIMAGE, RegionList.aRegions[1]) + cbFilename * 2); + if (pThis) + { + pThis->hIsoFile = NIL_RTVFSFILE; + pThis->cbImage = 0; + pThis->fOpenFlags = fOpenFlags; + pThis->pIfIo = pIfIo; + pThis->pIfError = pIfError; + + pThis->RegionList.fFlags = 0; + pThis->RegionList.cRegions = 1; + pThis->RegionList.aRegions[0].offRegion = 0; + pThis->RegionList.aRegions[0].cRegionBlocksOrBytes = 0; + pThis->RegionList.aRegions[0].cbBlock = 2048; + pThis->RegionList.aRegions[0].enmDataForm = VDREGIONDATAFORM_RAW; + pThis->RegionList.aRegions[0].enmMetadataForm = VDREGIONMETADATAFORM_NONE; + pThis->RegionList.aRegions[0].cbData = 2048; + pThis->RegionList.aRegions[0].cbMetadata = 0; + + char *pszDst = (char *)&pThis->RegionList.aRegions[1]; + memcpy(pszDst, pszFilename, cbFilename); + pThis->pszFilename = pszDst; + pszDst[cbFilename - 1] = '\0'; + pszDst += cbFilename; + + memcpy(pszDst, pszFilename, cbFilename); + pThis->pszCwd = pszDst; + pszDst[cbFilename - 1] = '\0'; + RTPathStripFilename(pszDst); + + /* + * Only go all the way if this isn't an info query. Re-mastering an ISO + * can potentially be a lot of work and we don't want to go thru with it + * just because the GUI wants to display the image size. + */ + if (!(fOpenFlags & VD_OPEN_FLAGS_INFO)) + rc = visoOpenWorker(pThis); + else + rc = visoProbeWorker(pThis->pszFilename, pThis->pIfIo, &pThis->Uuid); + if (RT_SUCCESS(rc)) + { + *ppBackendData = pThis; + LogFlowFunc(("returns VINF_SUCCESS (UUID=%RTuuid, pszFilename=%s)\n", &pThis->Uuid, pThis->pszFilename)); + return VINF_SUCCESS; + } + + RTMemFree(pThis); + } + else + rc = VERR_NO_MEMORY; + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** + * Scans the VISO file and removes all references to files + * which are in the same folder as the VISO and + * whose names begin with "Unattended-". + * + * @return VBox status code. + * + * @param pThis Pointer to VISO backend data. + */ +static int deleteReferences(PVISOIMAGE pThis) +{ + /* + * Open the file and read it into memory. + */ + PVDIOSTORAGE pStorage = NULL; + int vrc = vdIfIoIntFileOpen(pThis->pIfIo, pThis->pszFilename, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE, &pStorage); + if (RT_FAILURE(vrc)) + { + LogRel(("VISO: Unable to open file '%s': %Rrc\n", pThis->pszFilename, vrc)); + return vrc; + } + + LogRel(("VISO: Handling file '%s' references\n", pThis->pszFilename)); + + /* + * Read the file into memory. + */ + uint64_t cbFile = 0; + vrc = vdIfIoIntFileGetSize(pThis->pIfIo, pStorage, &cbFile); + if (RT_SUCCESS(vrc)) + { + if (cbFile <= VISO_MAX_FILE_SIZE) + { + char *pszContent = (char *)RTMemTmpAlloc(cbFile + 1); + if (pszContent) + { + vrc = vdIfIoIntFileReadSync(pThis->pIfIo, pStorage, 0 /*off*/, pszContent, (size_t)cbFile); + if (RT_SUCCESS(vrc)) + { + /* + * Check the file marker. + * Ignore leading blanks. + */ + pszContent[(size_t)cbFile] = '\0'; + + char *pszReadDst = pszContent; + while (RT_C_IS_SPACE(*pszReadDst)) + pszReadDst++; + if (strncmp(pszReadDst, RT_STR_TUPLE("--iprt-iso-maker-file-marker")) == 0) + { + vrc = visoParseUuid(pszReadDst, &pThis->Uuid); + if (RT_SUCCESS(vrc)) + { + /* + * Make sure it's valid UTF-8 before letting + */ + vrc = RTStrValidateEncodingEx(pszContent, cbFile + 1, + RTSTR_VALIDATE_ENCODING_EXACT_LENGTH + | RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED); + if (RT_SUCCESS(vrc)) + { + /* + * Convert it into an argument vector. + * Free the content afterwards to reduce memory pressure. + */ + uint32_t fGetOpt = strncmp(pszReadDst, RT_STR_TUPLE("--iprt-iso-maker-file-marker-ms")) != 0 + ? RTGETOPTARGV_CNV_QUOTE_BOURNE_SH : RTGETOPTARGV_CNV_QUOTE_MS_CRT; + fGetOpt |= RTGETOPTARGV_CNV_MODIFY_INPUT; + char **papszArgs; + int cArgs; + vrc = RTGetOptArgvFromString(&papszArgs, &cArgs, pszContent, fGetOpt, NULL); + + if (RT_SUCCESS(vrc)) + { + for (int i = 0; i < cArgs; ++i) + { + char *pszArg = papszArgs[i]; + char *pszOffset = strrchr(pszArg, '='); + if (pszOffset != NULL) + pszArg = pszOffset + 1; + + /* if it isn't option */ + if (pszArg[0] != '-') + { + char *pszPath = RTPathAbsExDup(pThis->pszCwd, pszArg, 0); + if (RTStrStartsWith((const char *)pszPath, pThis->pszCwd)) + { + char *pszFileName = RTPathFilename(pszPath); + if ( pszFileName != NULL + && RTStrStartsWith((const char *)pszFileName, "Unattended-")) + { + vrc = RTFileDelete(pszPath); + if (RT_SUCCESS(vrc)) + LogRel(("VISO: file '%s' deleted\n", pszPath)); + else + LogRel(("VISO: Failed to delete the file '%s' (%Rrc)\n", pszPath, vrc)); + vrc = VINF_SUCCESS; + } + } + RTStrFree(pszPath); + } + } + RTGetOptArgvFreeEx(papszArgs, fGetOpt); + papszArgs = NULL; + } + else + vdIfError(pThis->pIfError, vrc, RT_SRC_POS, "VISO: RTGetOptArgvFromString failed: %Rrc", vrc); + } + else + vdIfError(pThis->pIfError, vrc, RT_SRC_POS, "VISO: Invalid file encoding"); + } + else + vdIfError(pThis->pIfError, vrc, RT_SRC_POS, "VISO: Parsing UUID failed: %Rrc", vrc); + } + else + vrc = VERR_VD_GEN_INVALID_HEADER; + } + else + vdIfError(pThis->pIfError, vrc, RT_SRC_POS, "VISO: Reading file failed: %Rrc", vrc); + + RTMemTmpFree(pszContent); + } + else + vrc = VERR_NO_TMP_MEMORY; + } + else + { + LogRel(("visoOpen: VERR_VD_INVALID_SIZE - cbFile=%#RX64 cbMaxFile=%#RX64\n", + cbFile, (uint64_t)VISO_MAX_FILE_SIZE)); + vrc = VERR_VD_INVALID_SIZE; + } + } + if (RT_FAILURE(vrc)) + LogRel(("VISO: Handling of file '%s' failed with %Rrc\n", pThis->pszFilename, vrc)); + + vdIfIoIntFileClose(pThis->pIfIo, pStorage); + return vrc; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnClose} + */ +static DECLCALLBACK(int) visoClose(void *pBackendData, bool fDelete) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + LogFlowFunc(("pThis=%p fDelete=%RTbool\n", pThis, fDelete)); + + if (pThis) + { + if (fDelete) + { + PVDINTERFACECONFIG pImgCfg = VDIfConfigGet(&pThis->pIfIo->Core); + + bool fUnattendedInstall = false; + int vrc = VDCFGQueryBool(pImgCfg, "UnattendedInstall", &fUnattendedInstall); + + /* + * The VISO created by unattended installer, so delete all generated files + * included in the VISO. the file is considered generated if it is located + * in the same folder as VISO and its name begins with "Unattended-" + */ + if (RT_SUCCESS(vrc) && fUnattendedInstall) + deleteReferences(pThis); + vdIfIoIntFileDelete(pThis->pIfIo, pThis->pszFilename); + } + + if (pThis->hIsoFile != NIL_RTVFSFILE) + { + RTVfsFileRelease(pThis->hIsoFile); + pThis->hIsoFile = NIL_RTVFSFILE; + } + + RTMemFree(pThis); + } + + LogFlowFunc(("returns VINF_SUCCESS\n")); + return VINF_SUCCESS; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnRead} + */ +static DECLCALLBACK(int) visoRead(void *pBackendData, uint64_t uOffset, size_t cbToRead, PVDIOCTX pIoCtx, size_t *pcbActuallyRead) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + uint64_t off = uOffset; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + AssertReturn(pThis->hIsoFile != NIL_RTVFSFILE, VERR_VD_NOT_OPENED); + LogFlowFunc(("pThis=%p off=%#RX64 cbToRead=%#zx pIoCtx=%p pcbActuallyRead=%p\n", pThis, off, cbToRead, pIoCtx, pcbActuallyRead)); + + /* + * Check request. + */ + AssertReturn( off < pThis->cbImage + || (off == pThis->cbImage && cbToRead == 0), VERR_EOF); + + uint64_t cbLeftInImage = pThis->cbImage - off; + if (cbToRead >= cbLeftInImage) + cbToRead = cbLeftInImage; /* ASSUMES the caller can deal with this, given the pcbActuallyRead parameter... */ + + /* + * Work the I/O context using vdIfIoIntIoCtxSegArrayCreate. + */ + int rc = VINF_SUCCESS; + size_t cbActuallyRead = 0; + while (cbToRead > 0) + { + RTSGSEG Seg; + unsigned cSegs = 1; + size_t cbThisRead = vdIfIoIntIoCtxSegArrayCreate(pThis->pIfIo, pIoCtx, &Seg, &cSegs, cbToRead); + AssertBreakStmt(cbThisRead != 0, rc = VERR_INTERNAL_ERROR_2); + Assert(cbThisRead == Seg.cbSeg); + + rc = RTVfsFileReadAt(pThis->hIsoFile, off, Seg.pvSeg, cbThisRead, NULL); + AssertRCBreak(rc); + + /* advance. */ + cbActuallyRead += cbThisRead; + off += cbThisRead; + cbToRead -= cbThisRead; + } + + *pcbActuallyRead = cbActuallyRead; + return rc; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnWrite} + */ +static DECLCALLBACK(int) visoWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite, + PVDIOCTX pIoCtx, size_t *pcbWriteProcess, size_t *pcbPreRead, + size_t *pcbPostRead, unsigned fWrite) +{ + RT_NOREF(uOffset, cbToWrite, pIoCtx, pcbWriteProcess, pcbPreRead, pcbPostRead, fWrite); + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + AssertReturn(pThis->hIsoFile != NIL_RTVFSFILE, VERR_VD_NOT_OPENED); + LogFlowFunc(("pThis=%p off=%#RX64 pIoCtx=%p cbToWrite=%#zx pcbWriteProcess=%p pcbPreRead=%p pcbPostRead=%p -> VERR_VD_IMAGE_READ_ONLY\n", + pThis, uOffset, pIoCtx, cbToWrite, pcbWriteProcess, pcbPreRead, pcbPostRead)); + return VERR_VD_IMAGE_READ_ONLY; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnFlush} + */ +static DECLCALLBACK(int) visoFlush(void *pBackendData, PVDIOCTX pIoCtx) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + AssertReturn(pThis->hIsoFile != NIL_RTVFSFILE, VERR_VD_NOT_OPENED); + RT_NOREF(pIoCtx); + return VINF_SUCCESS; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetVersion} + */ +static DECLCALLBACK(unsigned) visoGetVersion(void *pBackendData) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, 0); + LogFlowFunc(("pThis=%#p -> 1\n", pThis)); + return 1; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetFileSize} + */ +static DECLCALLBACK(uint64_t) visoGetFileSize(void *pBackendData) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, 0); + LogFlowFunc(("pThis=%p -> %RX64 (%s)\n", pThis, pThis->cbImage, pThis->hIsoFile == NIL_RTVFSFILE ? "fake!" : "real")); + return pThis->cbImage; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetPCHSGeometry} + */ +static DECLCALLBACK(int) visoGetPCHSGeometry(void *pBackendData, PVDGEOMETRY pPCHSGeometry) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + LogFlowFunc(("pThis=%p pPCHSGeometry=%p -> VERR_NOT_SUPPORTED\n", pThis, pPCHSGeometry)); + RT_NOREF(pPCHSGeometry); + return VERR_NOT_SUPPORTED; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetPCHSGeometry} + */ +static DECLCALLBACK(int) visoSetPCHSGeometry(void *pBackendData, PCVDGEOMETRY pPCHSGeometry) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + LogFlowFunc(("pThis=%p pPCHSGeometry=%p:{%u/%u/%u} -> VERR_VD_IMAGE_READ_ONLY\n", + pThis, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors)); + RT_NOREF(pPCHSGeometry); + return VERR_VD_IMAGE_READ_ONLY; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetLCHSGeometry} + */ +static DECLCALLBACK(int) visoGetLCHSGeometry(void *pBackendData, PVDGEOMETRY pLCHSGeometry) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + LogFlowFunc(("pThis=%p pLCHSGeometry=%p -> VERR_NOT_SUPPORTED\n", pThis, pLCHSGeometry)); + RT_NOREF(pLCHSGeometry); + return VERR_NOT_SUPPORTED; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetLCHSGeometry} + */ +static DECLCALLBACK(int) visoSetLCHSGeometry(void *pBackendData, PCVDGEOMETRY pLCHSGeometry) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + LogFlowFunc(("pThis=%p pLCHSGeometry=%p:{%u/%u/%u} -> VERR_VD_IMAGE_READ_ONLY\n", + pThis, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors)); + RT_NOREF(pLCHSGeometry); + return VERR_VD_IMAGE_READ_ONLY; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnQueryRegions} + */ +static DECLCALLBACK(int) visoQueryRegions(void *pBackendData, PCVDREGIONLIST *ppRegionList) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + *ppRegionList = NULL; + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + + *ppRegionList = &pThis->RegionList; + LogFlowFunc(("returns VINF_SUCCESS (one region: 0 LB %RX64; pThis=%p)\n", pThis->RegionList.aRegions[0].cbData, pThis)); + return VINF_SUCCESS; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnRegionListRelease} + */ +static DECLCALLBACK(void) visoRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList) +{ + /* Nothing to do here. Just assert the input to avoid unused parameter warnings. */ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + LogFlowFunc(("pThis=%p pRegionList=%p\n", pThis, pRegionList)); + AssertPtrReturnVoid(pThis); + AssertReturnVoid(pRegionList == &pThis->RegionList || pRegionList == 0); +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetImageFlags} + */ +static DECLCALLBACK(unsigned) visoGetImageFlags(void *pBackendData) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + LogFlowFunc(("pThis=%p -> VD_IMAGE_FLAGS_NONE\n", pThis)); + AssertPtrReturn(pThis, VD_IMAGE_FLAGS_NONE); + return VD_IMAGE_FLAGS_NONE; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetOpenFlags} + */ +static DECLCALLBACK(unsigned) visoGetOpenFlags(void *pBackendData) +{ + LogFlowFunc(("pBackendData=%#p\n", pBackendData)); + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturn(pThis, 0); + + LogFlowFunc(("returns %#x\n", pThis->fOpenFlags)); + return pThis->fOpenFlags; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetOpenFlags} + */ +static DECLCALLBACK(int) visoSetOpenFlags(void *pBackendData, unsigned uOpenFlags) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + LogFlowFunc(("pThis=%p fOpenFlags=%#x\n", pThis, uOpenFlags)); + + AssertPtrReturn(pThis, VERR_INVALID_POINTER); + uint32_t const fSupported = VD_OPEN_FLAGS_READONLY | VD_OPEN_FLAGS_INFO + | VD_OPEN_FLAGS_ASYNC_IO | VD_OPEN_FLAGS_SHAREABLE + | VD_OPEN_FLAGS_SEQUENTIAL | VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS; + AssertMsgReturn(!(uOpenFlags & ~fSupported), ("fOpenFlags=%#x\n", uOpenFlags), VERR_INVALID_FLAGS); + + /* + * Only react if we switch from VD_OPEN_FLAGS_INFO to non-VD_OPEN_FLAGS_INFO mode, + * becuase that means we need to open the image. + */ + if ( (pThis->fOpenFlags & VD_OPEN_FLAGS_INFO) + && !(uOpenFlags & VD_OPEN_FLAGS_INFO) + && pThis->hIsoFile == NIL_RTVFSFILE) + { + int rc = visoOpenWorker(pThis); + if (RT_FAILURE(rc)) + { + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; + } + } + + /* + * Update the flags. + */ + pThis->fOpenFlags &= ~fSupported; + pThis->fOpenFlags |= fSupported & uOpenFlags; + pThis->fOpenFlags |= VD_OPEN_FLAGS_READONLY; + if (pThis->hIsoFile != NIL_RTVFSFILE) + pThis->fOpenFlags &= ~VD_OPEN_FLAGS_INFO; + + return VINF_SUCCESS; +} + +#define uOpenFlags fOpenFlags /* sigh */ + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetComment} + */ +VD_BACKEND_CALLBACK_GET_COMMENT_DEF_NOT_SUPPORTED(visoGetComment); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetComment} + */ +VD_BACKEND_CALLBACK_SET_COMMENT_DEF_NOT_SUPPORTED(visoSetComment, PVISOIMAGE); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetUuid} + */ +static DECLCALLBACK(int) visoGetUuid(void *pBackendData, PRTUUID pUuid) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + *pUuid = pThis->Uuid; + LogFlowFunc(("returns VIF_SUCCESS (%RTuuid)\n", pUuid)); + return VINF_SUCCESS; +} + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetUuid} + */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(visoSetUuid, PVISOIMAGE); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetModificationUuid} + */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(visoGetModificationUuid); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetModificationUuid} + */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(visoSetModificationUuid, PVISOIMAGE); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetParentUuid} + */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(visoGetParentUuid); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetParentUuid} + */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(visoSetParentUuid, PVISOIMAGE); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnGetParentModificationUuid} + */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(visoGetParentModificationUuid); + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnSetParentModificationUuid} + */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(visoSetParentModificationUuid, PVISOIMAGE); + +#undef uOpenFlags + +/** + * @interface_method_impl{VDIMAGEBACKEND,pfnDump} + */ +static DECLCALLBACK(void) visoDump(void *pBackendData) +{ + PVISOIMAGE pThis = (PVISOIMAGE)pBackendData; + AssertPtrReturnVoid(pThis); + + vdIfErrorMessage(pThis->pIfError, "Dumping CUE image '%s' fOpenFlags=%x cbImage=%#RX64\n", + pThis->pszFilename, pThis->fOpenFlags, pThis->cbImage); +} + + + +/** + * VBox ISO maker backend. + */ +const VDIMAGEBACKEND g_VBoxIsoMakerBackend = +{ + /* u32Version */ + VD_IMGBACKEND_VERSION, + /* pszBackendName */ + "VBoxIsoMaker", + /* uBackendCaps */ + VD_CAP_FILE, + /* paFileExtensions */ + g_aVBoXIsoMakerFileExtensions, + /* paConfigInfo */ + s_aVisoConfigInfo, + /* pfnProbe */ + visoProbe, + /* pfnOpen */ + visoOpen, + /* pfnCreate */ + NULL, + /* pfnRename */ + NULL, + /* pfnClose */ + visoClose, + /* pfnRead */ + visoRead, + /* pfnWrite */ + visoWrite, + /* pfnFlush */ + visoFlush, + /* pfnDiscard */ + NULL, + /* pfnGetVersion */ + visoGetVersion, + /* pfnGetFileSize */ + visoGetFileSize, + /* pfnGetPCHSGeometry */ + visoGetPCHSGeometry, + /* pfnSetPCHSGeometry */ + visoSetPCHSGeometry, + /* pfnGetLCHSGeometry */ + visoGetLCHSGeometry, + /* pfnSetLCHSGeometry */ + visoSetLCHSGeometry, + /* pfnQueryRegions */ + visoQueryRegions, + /* pfnRegionListRelease */ + visoRegionListRelease, + /* pfnGetImageFlags */ + visoGetImageFlags, + /* pfnGetOpenFlags */ + visoGetOpenFlags, + /* pfnSetOpenFlags */ + visoSetOpenFlags, + /* pfnGetComment */ + visoGetComment, + /* pfnSetComment */ + visoSetComment, + /* pfnGetUuid */ + visoGetUuid, + /* pfnSetUuid */ + visoSetUuid, + /* pfnGetModificationUuid */ + visoGetModificationUuid, + /* pfnSetModificationUuid */ + visoSetModificationUuid, + /* pfnGetParentUuid */ + visoGetParentUuid, + /* pfnSetParentUuid */ + visoSetParentUuid, + /* pfnGetParentModificationUuid */ + visoGetParentModificationUuid, + /* pfnSetParentModificationUuid */ + visoSetParentModificationUuid, + /* pfnDump */ + visoDump, + /* pfnGetTimestamp */ + NULL, + /* pfnGetParentTimestamp */ + NULL, + /* pfnSetParentTimestamp */ + NULL, + /* pfnGetParentFilename */ + NULL, + /* pfnSetParentFilename */ + NULL, + /* pfnComposeLocation */ + genericFileComposeLocation, + /* pfnComposeName */ + genericFileComposeName, + /* pfnCompact */ + NULL, + /* pfnResize */ + NULL, + /* pfnRepair */ + NULL, + /* pfnTraverseMetadata */ + NULL, + /* u32VersionEnd */ + VD_IMGBACKEND_VERSION +}; + |