/**
* Extracts a file.
*/
static RTEXITCODE rtZipUnzipCmdExtractFile(PRTZIPUNZIPCMDOPS pOpts, RTVFSOBJ hVfsObj, RTEXITCODE rcExit,
const char *pszDst, PCRTFSOBJINFO pUnixInfo)
{
/*
* Open the destination file and create a stream object for it.
*/
uint32_t fOpen = RTFILE_O_READWRITE | RTFILE_O_DENY_WRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_ACCESS_ATTR_DEFAULT
| (pUnixInfo->Attr.fMode << RTFILE_O_CREATE_MODE_SHIFT);
RTFILE hFile;
int rc = RTFileOpen(&hFile, pszDst, fOpen);
if (RT_FAILURE(rc))
return RTMsgErrorExit(RTEXITCODE_FAILURE, "%s: Error creating file: %Rrc", pszDst, rc);
RTVFSIOSTREAM hVfsIosDst;
rc = RTVfsIoStrmFromRTFile(hFile, fOpen, true /*fLeaveOpen*/, &hVfsIosDst);
if (RT_SUCCESS(rc))
{
/*
* Pump the data thru.
*/
RTVFSIOSTREAM hVfsIosSrc = RTVfsObjToIoStream(hVfsObj);
rc = RTVfsUtilPumpIoStreams(hVfsIosSrc, hVfsIosDst, (uint32_t)RT_MIN(pUnixInfo->cbObject, _1M));
if (RT_SUCCESS(rc))
{
/*
* Correct the file mode and other attributes.
*/
if (!pOpts->fNoModTimeFiles)
{
rc = RTFileSetTimes(hFile, NULL, &pUnixInfo->ModificationTime, NULL, NULL);
if (RT_FAILURE(rc))
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "%s: Error setting times: %Rrc", pszDst, rc);
}
}
else
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "%s: Error writing out file: %Rrc", pszDst, rc);
RTVfsIoStrmRelease(hVfsIosSrc);
RTVfsIoStrmRelease(hVfsIosDst);
}
else
rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "%s: Error creating I/O stream for file: %Rrc", pszDst, rc);
return rcExit;
}
/**
* @interface_method_impl{RTVFSCHAINELEMENTREG,pfnInstantiate}
*/
static DECLCALLBACK(int) rtVfsChainGzip_Instantiate(PCRTVFSCHAINELEMENTREG pProviderReg, PCRTVFSCHAINSPEC pSpec,
PCRTVFSCHAINELEMSPEC pElement, RTVFSOBJ hPrevVfsObj,
PRTVFSOBJ phVfsObj, uint32_t *poffError, PRTERRINFO pErrInfo)
{
RT_NOREF(pProviderReg, pSpec, pElement, poffError, pErrInfo);
AssertReturn(hPrevVfsObj != NIL_RTVFSOBJ, VERR_VFS_CHAIN_IPE);
RTVFSIOSTREAM hVfsIosOut = RTVfsObjToIoStream(hPrevVfsObj);
if (hVfsIosOut == NIL_RTVFSIOSTREAM)
return VERR_VFS_CHAIN_CAST_FAILED;
RTVFSIOSTREAM hVfsIos = NIL_RTVFSIOSTREAM;
int rc = RTZipGzipCompressIoStream(hVfsIosOut, 0 /*fFlags*/, pElement->uProvider, &hVfsIos);
RTVfsObjFromIoStream(hVfsIosOut);
if (RT_SUCCESS(rc))
{
*phVfsObj = RTVfsObjFromIoStream(hVfsIos);
RTVfsIoStrmRelease(hVfsIos);
if (*phVfsObj != NIL_RTVFSOBJ)
return VINF_SUCCESS;
rc = VERR_VFS_CHAIN_CAST_FAILED;
}
return rc;
}
/**
* Validates a standard file.
*
* Generally all files are
*
* @returns VBox status code, failure message in @a pszError.
* @param pszAdjName The adjusted member name.
* @param enmType The VFS object type.
* @param phVfsObj The pointer to the VFS object handle variable.
* This is both input and output.
* @param phVfsFile Where to store the handle to the memorized
* file. This is NULL for license files.
* @param pszError Where to write an error message on failure.
* @param cbError The size of the @a pszError buffer.
*/
static int VBoxExtPackValidateStandardFile(const char *pszAdjName, RTVFSOBJTYPE enmType,
PRTVFSOBJ phVfsObj, PRTVFSFILE phVfsFile, char *pszError, size_t cbError)
{
int rc;
/*
* Make sure it's a file and that it isn't too large.
*/
if (phVfsFile && *phVfsFile != NIL_RTVFSFILE)
rc = vboxExtPackReturnError(VERR_DUPLICATE, pszError, cbError,
"There can only be one '%s'", pszAdjName);
else if (enmType != RTVFSOBJTYPE_IO_STREAM && enmType != RTVFSOBJTYPE_FILE)
rc = vboxExtPackReturnError(VERR_NOT_A_FILE, pszError, cbError,
"Standard member '%s' is not a file", pszAdjName);
else
{
RTFSOBJINFO ObjInfo;
rc = RTVfsObjQueryInfo(*phVfsObj, &ObjInfo, RTFSOBJATTRADD_NOTHING);
if (RT_SUCCESS(rc))
{
if (!RTFS_IS_FILE(ObjInfo.Attr.fMode))
rc = vboxExtPackReturnError(VERR_NOT_A_FILE, pszError, cbError,
"Standard member '%s' is not a file", pszAdjName);
else if (ObjInfo.cbObject >= _1M)
rc = vboxExtPackReturnError(VERR_OUT_OF_RANGE, pszError, cbError,
"Standard member '%s' is too large: %'RU64 bytes (max 1 MB)",
pszAdjName, (uint64_t)ObjInfo.cbObject);
else
{
/*
* Make an in memory copy of the stream and check that the file
* is UTF-8 clean.
*/
RTVFSIOSTREAM hVfsIos = RTVfsObjToIoStream(*phVfsObj);
RTVFSFILE hVfsFile;
rc = RTVfsMemorizeIoStreamAsFile(hVfsIos, RTFILE_O_READ, &hVfsFile);
if (RT_SUCCESS(rc))
{
rc = RTVfsIoStrmValidateUtf8Encoding(hVfsIos,
RTVFS_VALIDATE_UTF8_BY_RTC_3629 | RTVFS_VALIDATE_UTF8_NO_NULL,
NULL);
if (RT_SUCCESS(rc))
{
/*
* Replace *phVfsObj with the memorized file.
*/
rc = RTVfsFileSeek(hVfsFile, 0, RTFILE_SEEK_BEGIN, NULL);
if (RT_SUCCESS(rc))
{
RTVfsObjRelease(*phVfsObj);
*phVfsObj = RTVfsObjFromFile(hVfsFile);
}
else
vboxExtPackSetError(pszError, cbError, "RTVfsFileSeek failed on '%s': %Rrc", pszAdjName, rc);
}
if (phVfsFile && RT_SUCCESS(rc))
*phVfsFile = hVfsFile;
else
RTVfsFileRelease(hVfsFile);
}
else
vboxExtPackSetError(pszError, cbError, "RTVfsMemorizeIoStreamAsFile failed on '%s': %Rrc", pszAdjName, rc);
RTVfsIoStrmRelease(hVfsIos);
}
}
else
vboxExtPackSetError(pszError, cbError, "RTVfsObjQueryInfo failed on '%s': %Rrc", pszAdjName, rc);
}
return rc;
}
/**
* Validates the extension pack tarball prior to unpacking.
*
* Operations performed:
* - Mandatory files.
* - Manifest check.
* - Manifest seal check.
* - XML check, match name.
*
* @returns VBox status code, failures with message.
* @param hTarballFile The handle to open the @a pszTarball file.
* @param pszExtPackName The name of the extension pack name. NULL if
* the name is not fixed.
* @param pszTarball The name of the tarball in case we have to
* complain about something.
* @param pszTarballDigest The SHA-256 digest of the tarball. Empty string
* if no digest available.
* @param pszError Where to store an error message on failure.
* @param cbError The size of the buffer @a pszError points to.
* @param phValidManifest Where to optionally return the handle to fully
* validated the manifest for the extension pack.
* This includes all files.
* @param phXmlFile Where to optionally return the memorized XML
* file.
* @param pStrDigest Where to return the digest of the file.
* Optional.
*/
int VBoxExtPackValidateTarball(RTFILE hTarballFile, const char *pszExtPackName,
const char *pszTarball, const char *pszTarballDigest,
char *pszError, size_t cbError,
PRTMANIFEST phValidManifest, PRTVFSFILE phXmlFile, RTCString *pStrDigest)
{
/*
* Clear return values.
*/
if (phValidManifest)
*phValidManifest = NIL_RTMANIFEST;
if (phXmlFile)
*phXmlFile = NIL_RTVFSFILE;
Assert(cbError > 1);
*pszError = '\0';
NOREF(pszTarball);
/*
* Open the tar.gz filesystem stream and set up an manifest in-memory file.
*/
RTMANIFEST hFileManifest;
RTVFSFSSTREAM hTarFss;
int rc = VBoxExtPackOpenTarFss(hTarballFile, pszError, cbError, &hTarFss, &hFileManifest);
if (RT_FAILURE(rc))
return rc;
RTMANIFEST hOurManifest;
rc = RTManifestCreate(0 /*fFlags*/, &hOurManifest);
if (RT_SUCCESS(rc))
{
/*
* Process the tarball (would be nice to move this to a function).
*/
RTVFSFILE hXmlFile = NIL_RTVFSFILE;
RTVFSFILE hManifestFile = NIL_RTVFSFILE;
RTVFSFILE hSignatureFile = NIL_RTVFSFILE;
for (;;)
{
/*
* Get the next stream object.
*/
char *pszName;
RTVFSOBJ hVfsObj;
RTVFSOBJTYPE enmType;
rc = RTVfsFsStrmNext(hTarFss, &pszName, &enmType, &hVfsObj);
if (RT_FAILURE(rc))
{
if (rc != VERR_EOF)
vboxExtPackSetError(pszError, cbError, "RTVfsFsStrmNext failed: %Rrc", rc);
else
rc = VINF_SUCCESS;
break;
}
const char *pszAdjName = pszName[0] == '.' && pszName[1] == '/' ? &pszName[2] : pszName;
/*
* Check the type & name validity, performing special tests on
* standard extension pack member files.
*
* N.B. We will always reach the end of the loop before breaking on
* failure - cleanup reasons.
*/
rc = VBoxExtPackValidateMember(pszName, enmType, hVfsObj, pszError, cbError);
if (RT_SUCCESS(rc))
{
PRTVFSFILE phVfsFile = NULL;
if (!strcmp(pszAdjName, VBOX_EXTPACK_DESCRIPTION_NAME))
phVfsFile = &hXmlFile;
else if (!strcmp(pszAdjName, VBOX_EXTPACK_MANIFEST_NAME))
phVfsFile = &hManifestFile;
else if (!strcmp(pszAdjName, VBOX_EXTPACK_SIGNATURE_NAME))
phVfsFile = &hSignatureFile;
else if (!strncmp(pszAdjName, VBOX_EXTPACK_LICENSE_NAME_PREFIX, sizeof(VBOX_EXTPACK_LICENSE_NAME_PREFIX) - 1))
rc = VBoxExtPackValidateStandardFile(pszAdjName, enmType, &hVfsObj, NULL, pszError, cbError);
if (phVfsFile)
rc = VBoxExtPackValidateStandardFile(pszAdjName, enmType, &hVfsObj, phVfsFile, pszError, cbError);
}
/*
* Add any I/O stream to the manifest
*/
if ( RT_SUCCESS(rc)
&& ( enmType == RTVFSOBJTYPE_FILE
|| enmType == RTVFSOBJTYPE_IO_STREAM))
{
RTVFSIOSTREAM hVfsIos = RTVfsObjToIoStream(hVfsObj);
rc = RTManifestEntryAddIoStream(hOurManifest, hVfsIos, pszAdjName, RTMANIFEST_ATTR_SIZE | RTMANIFEST_ATTR_SHA256);
if (RT_FAILURE(rc))
vboxExtPackSetError(pszError, cbError, "RTManifestEntryAddIoStream failed on '%s': %Rrc", pszAdjName, rc);
RTVfsIoStrmRelease(hVfsIos);
}
/*
* Clean up and break out on failure.
*/
RTVfsObjRelease(hVfsObj);
RTStrFree(pszName);
if (RT_FAILURE(rc))
break;
}
/*
* Check the integrity of the tarball file.
*/
if (RT_SUCCESS(rc))
{
RTVfsFsStrmRelease(hTarFss);
hTarFss = NIL_RTVFSFSSTREAM;
rc = vboxExtPackVerifyFileDigest(hFileManifest, pszTarballDigest, pStrDigest, pszError, cbError);
}
/*
* If we've successfully processed the tarball, verify that the
* mandatory files are present.
*/
if (RT_SUCCESS(rc))
{
if (hXmlFile == NIL_RTVFSFILE)
rc = vboxExtPackReturnError(VERR_MISSING, pszError, cbError, "Mandator file '%s' is missing",
VBOX_EXTPACK_DESCRIPTION_NAME);
if (hManifestFile == NIL_RTVFSFILE)
rc = vboxExtPackReturnError(VERR_MISSING, pszError, cbError, "Mandator file '%s' is missing",
VBOX_EXTPACK_MANIFEST_NAME);
if (hSignatureFile == NIL_RTVFSFILE)
rc = vboxExtPackReturnError(VERR_MISSING, pszError, cbError, "Mandator file '%s' is missing",
VBOX_EXTPACK_SIGNATURE_NAME);
}
/*
* Check the manifest and it's signature.
*/
if (RT_SUCCESS(rc))
rc = vboxExtPackVerifyManifestAndSignature(hOurManifest, hManifestFile, hSignatureFile, pszError, cbError);
/*
* Check the XML.
*/
if (RT_SUCCESS(rc))
rc = vboxExtPackVerifyXml(hXmlFile, pszExtPackName, pszError, cbError);
/*
* Returns objects.
*/
if (RT_SUCCESS(rc))
{
if (phValidManifest)
{
RTManifestRetain(hOurManifest);
*phValidManifest = hOurManifest;
}
if (phXmlFile)
{
RTVfsFileRetain(hXmlFile);
*phXmlFile = hXmlFile;
}
}
/*
* Release our object references.
*/
RTManifestRelease(hOurManifest);
RTVfsFileRelease(hXmlFile);
RTVfsFileRelease(hManifestFile);
RTVfsFileRelease(hSignatureFile);
}
else
vboxExtPackSetError(pszError, cbError, "RTManifestCreate failed: %Rrc", rc);
RTVfsFsStrmRelease(hTarFss);
RTManifestRelease(hFileManifest);
return rc;
}
RTR3DECL(int) RTTarFileOpen(RTTAR hTar, PRTTARFILE phFile, const char *pszFilename, uint32_t fOpen)
{
/* Write only interface now. */
AssertReturn(fOpen & RTFILE_O_WRITE, VERR_INVALID_PARAMETER);
PRTTARINTERNAL pInt = hTar;
RTTAR_VALID_RETURN(pInt);
if (!pInt->hTarFile)
return VERR_INVALID_HANDLE;
if (fOpen & RTFILE_O_WRITE)
{
if (!(pInt->fOpenMode & RTFILE_O_WRITE))
return VERR_WRITE_PROTECT;
if (pInt->fFileOpenForWrite)
return VERR_TOO_MANY_OPEN_FILES;
}
int rc = VINF_SUCCESS;
if (!(fOpen & RTFILE_O_WRITE))
{
/*
* Rewind the stream if necessary.
*/
if (!pInt->fFssAtStart)
{
if (pInt->hVfsFss != NIL_RTVFSFSSTREAM)
{
uint32_t cRefs = RTVfsFsStrmRelease(pInt->hVfsFss); Assert(cRefs != UINT32_MAX);
pInt->hVfsFss = NIL_RTVFSFSSTREAM;
}
if (pInt->hVfsFile == NIL_RTVFSFILE)
{
rc = RTVfsFileFromRTFile(pInt->hTarFile, RTFILE_O_READ, true /*fLeaveOpen*/, &pInt->hVfsFile);
if (RT_FAILURE(rc))
return rc;
}
RTVFSIOSTREAM hVfsIos = RTVfsFileToIoStream(pInt->hVfsFile);
rc = RTZipTarFsStreamFromIoStream(hVfsIos, 0 /*fFlags*/, &pInt->hVfsFss);
RTVfsIoStrmRelease(hVfsIos);
if (RT_FAILURE(rc))
return rc;
}
/*
* Search the file system stream.
*/
pInt->fFssAtStart = false;
for (;;)
{
char *pszName;
RTVFSOBJTYPE enmType;
RTVFSOBJ hVfsObj;
rc = RTVfsFsStrmNext(pInt->hVfsFss, &pszName, &enmType, &hVfsObj);
if (rc == VERR_EOF)
return VERR_FILE_NOT_FOUND;
if (RT_FAILURE(rc))
return rc;
if (!RTStrCmp(pszName, pszFilename))
{
if (enmType == RTVFSOBJTYPE_FILE || enmType == RTVFSOBJTYPE_IO_STREAM)
rc = rtTarFileCreateHandleForReadOnly(pszName, RTVfsObjToIoStream(hVfsObj), fOpen, phFile);
else
{
rc = VERR_UNEXPECTED_FS_OBJ_TYPE;
RTStrFree(pszName);
}
RTVfsObjRelease(hVfsObj);
break;
}
RTStrFree(pszName);
RTVfsObjRelease(hVfsObj);
} /* Search loop. */
}
else
{
PRTTARFILEINTERNAL pFileInt = rtTarFileCreateForWrite(pInt, pszFilename, fOpen);
if (!pFileInt)
return VERR_NO_MEMORY;
pInt->fFileOpenForWrite = true;
/* If we are in write mode, we also in append mode. Add an dummy
* header at the end of the current file. It will be filled by the
* close operation. */
rc = RTFileSeek(pFileInt->pTar->hTarFile, 0, RTFILE_SEEK_END, &pFileInt->offStart);
if (RT_SUCCESS(rc))
{
RTTARRECORD record;
RT_ZERO(record);
rc = RTFileWrite(pFileInt->pTar->hTarFile, &record, sizeof(RTTARRECORD), NULL);
}
if (RT_SUCCESS(rc))
*phFile = (RTTARFILE)pFileInt;
else
{
/* Cleanup on failure */
if (pFileInt->pszFilename)
RTStrFree(pFileInt->pszFilename);
RTMemFree(pFileInt);
}
}
return rc;
}
