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/** @file
*
* VirtualBox External Authentication Library:
* Mac OS X Authentication. This is based on
* http://developer.apple.com/mac/library/samplecode/CryptNoMore/
*/
/*
* Copyright (C) 2009-2023 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
*/
#include <iprt/cdefs.h>
#include <iprt/assert.h>
#include <VBox/VBoxAuth.h>
#include <DirectoryService/DirectoryService.h>
/* Globals */
static const size_t s_cBufferSize = 32 * 1024;
tDirStatus defaultSearchNodePath(tDirReference pDirRef, tDataListPtr *pdsNodePath)
{
tDirStatus dsErr = eDSNoErr;
/* Create a buffer for the resulting nodes */
tDataBufferPtr pTmpBuf = NULL;
pTmpBuf = dsDataBufferAllocate(pDirRef, s_cBufferSize);
if (pTmpBuf)
{
/* Try to find the default search node for local names */
UInt32 cNodes;
tContextData hCtx = 0;
dsErr = dsFindDirNodes(pDirRef, pTmpBuf, NULL, eDSLocalNodeNames, &cNodes, &hCtx);
/* Any nodes found? */
if ( dsErr == eDSNoErr
&& cNodes >= 1)
/* The first path of the node list is what we looking for. */
dsErr = dsGetDirNodeName(pDirRef, pTmpBuf, 1, pdsNodePath);
else
dsErr = eDSNodeNotFound;
if (hCtx) /* (DSoNodeConfig.m from DSTools-162 does exactly the same free if not-zero-regardless-of-return-code.) */
dsReleaseContinueData(pDirRef, hCtx);
dsDataBufferDeAllocate(pDirRef, pTmpBuf);
}
else
dsErr = eDSAllocationFailed;
return dsErr;
}
tDirStatus userAuthInfo(tDirReference pDirRef, tDirNodeReference pNodeRef, const char *pszUsername, tDataListPtr *ppAuthNodeListOut)
{
tDirStatus dsErr = eDSNoErr;
tDirStatus dsCleanErr = eDSNoErr;
/* Create a buffer for the resulting authentication info */
tDataBufferPtr pTmpBuf = dsDataBufferAllocate(pDirRef, s_cBufferSize);
if (pTmpBuf)
{
/* Create the necessary lists for kDSNAttrMetaNodeLocation and kDSNAttrRecordName. */
tDataListPtr pRecordType = dsBuildListFromStrings(pDirRef, kDSStdRecordTypeUsers, NULL);
tDataListPtr pRecordName = dsBuildListFromStrings(pDirRef, pszUsername, NULL);
tDataListPtr pRequestedAttributes = dsBuildListFromStrings(pDirRef, kDSNAttrMetaNodeLocation, kDSNAttrRecordName, NULL);
if (!( pRecordType == NULL
|| pRecordName == NULL
|| pRequestedAttributes == NULL))
{
/* Now search for the first matching record */
UInt32 cRecords = 1;
tContextData hCtx = 0;
dsErr = dsGetRecordList(pNodeRef,
pTmpBuf,
pRecordName,
eDSExact,
pRecordType,
pRequestedAttributes,
false,
&cRecords,
&hCtx);
if ( dsErr == eDSNoErr
&& cRecords >= 1)
{
/* Process the first found record. Look at any attribute one by one. */
tAttributeListRef hRecAttrListRef = 0;
tRecordEntryPtr pRecEntry = NULL;
tDataListPtr pAuthNodeList = NULL;
dsErr = dsGetRecordEntry(pNodeRef, pTmpBuf, 1, &hRecAttrListRef, &pRecEntry);
if (dsErr == eDSNoErr)
{
for (size_t i = 1; i <= pRecEntry->fRecordAttributeCount; ++i)
{
tAttributeValueListRef hAttrValueListRef = 0;
tAttributeEntryPtr pAttrEntry = NULL;
/* Get the information for this attribute. */
dsErr = dsGetAttributeEntry(pNodeRef, pTmpBuf, hRecAttrListRef, i,
&hAttrValueListRef, &pAttrEntry);
if (dsErr == eDSNoErr)
{
tAttributeValueEntryPtr pValueEntry = NULL;
/* Has any value? */
if (pAttrEntry->fAttributeValueCount > 0)
{
dsErr = dsGetAttributeValue(pNodeRef, pTmpBuf, 1, hAttrValueListRef, &pValueEntry);
if (dsErr == eDSNoErr)
{
/* Check for kDSNAttrMetaNodeLocation */
if (strcmp(pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrMetaNodeLocation) == 0)
{
/* Convert the meta location attribute to a path node list */
pAuthNodeList = dsBuildFromPath(pDirRef,
pValueEntry->fAttributeValueData.fBufferData,
"/");
if (pAuthNodeList == NULL)
dsErr = eDSAllocationFailed;
}
}
}
if (pValueEntry != NULL)
dsDeallocAttributeValueEntry(pDirRef, pValueEntry);
if (hAttrValueListRef)
dsCloseAttributeValueList(hAttrValueListRef);
if (pAttrEntry != NULL)
dsDeallocAttributeEntry(pDirRef, pAttrEntry);
if (dsErr != eDSNoErr)
break;
}
}
}
/* Copy the results */
if (dsErr == eDSNoErr)
{
if (pAuthNodeList != NULL)
{
/* Copy out results. */
*ppAuthNodeListOut = pAuthNodeList;
pAuthNodeList = NULL;
}
else
dsErr = eDSAttributeNotFound;
}
if (pAuthNodeList != NULL)
{
dsCleanErr = dsDataListDeallocate(pDirRef, pAuthNodeList);
if (dsCleanErr == eDSNoErr)
free(pAuthNodeList);
}
if (hRecAttrListRef)
dsCloseAttributeList(hRecAttrListRef);
if (pRecEntry != NULL)
dsDeallocRecordEntry(pDirRef, pRecEntry);
}
else
dsErr = eDSRecordNotFound;
if (hCtx)
dsReleaseContinueData(pDirRef, hCtx);
}
else
dsErr = eDSAllocationFailed;
if (pRequestedAttributes != NULL)
{
dsCleanErr = dsDataListDeallocate(pDirRef, pRequestedAttributes);
if (dsCleanErr == eDSNoErr)
free(pRequestedAttributes);
}
if (pRecordName != NULL)
{
dsCleanErr = dsDataListDeallocate(pDirRef, pRecordName);
if (dsCleanErr == eDSNoErr)
free(pRecordName);
}
if (pRecordType != NULL)
{
dsCleanErr = dsDataListDeallocate(pDirRef, pRecordType);
if (dsCleanErr == eDSNoErr)
free(pRecordType);
}
dsDataBufferDeAllocate(pDirRef, pTmpBuf);
}
else
dsErr = eDSAllocationFailed;
return dsErr;
}
tDirStatus authWithNode(tDirReference pDirRef, tDataListPtr pAuthNodeList, const char *pszUsername, const char *pszPassword)
{
tDirStatus dsErr = eDSNoErr;
/* Open the authentication node. */
tDirNodeReference hAuthNodeRef = 0;
dsErr = dsOpenDirNode(pDirRef, pAuthNodeList, &hAuthNodeRef);
if (dsErr == eDSNoErr)
{
/* How like we to authenticate! */
tDataNodePtr pAuthMethod = dsDataNodeAllocateString(pDirRef, kDSStdAuthNodeNativeClearTextOK);
if (pAuthMethod)
{
/* Create the memory holding the authentication data. The data
* structure consists of 4 byte length of the username + zero byte,
* the username itself, a 4 byte length of the password & the
* password itself + zero byte. */
tDataBufferPtr pAuthOutBuf = dsDataBufferAllocate(pDirRef, s_cBufferSize);
if (pAuthOutBuf)
{
size_t cUserName = strlen(pszUsername) + 1;
size_t cPassword = strlen(pszPassword) + 1;
unsigned long cLen = 0;
tDataBufferPtr pAuthInBuf = dsDataBufferAllocate(pDirRef, sizeof(cLen) + cUserName + sizeof(cLen) + cPassword);
if (pAuthInBuf)
{
/* Move the data into the buffer. */
pAuthInBuf->fBufferLength = 0;
/* Length of the username */
cLen = cUserName;
memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], &cLen, sizeof(cLen));
pAuthInBuf->fBufferLength += sizeof(cLen);
/* The username itself */
memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], pszUsername, cUserName);
pAuthInBuf->fBufferLength += cUserName;
/* Length of the password */
cLen = cPassword;
memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], &cLen, sizeof(cLen));
pAuthInBuf->fBufferLength += sizeof(cLen);
/* The password itself */
memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], pszPassword, cPassword);
pAuthInBuf->fBufferLength += cPassword;
/* Now authenticate */
dsErr = dsDoDirNodeAuth(hAuthNodeRef, pAuthMethod, true, pAuthInBuf, pAuthOutBuf, NULL);
/* Clean up. */
dsDataBufferDeAllocate(pDirRef, pAuthInBuf);
}
else
dsErr = eDSAllocationFailed;
dsDataBufferDeAllocate(pDirRef, pAuthOutBuf);
}
else
dsErr = eDSAllocationFailed;
dsDataNodeDeAllocate(pDirRef, pAuthMethod);
}
else
dsErr = eDSAllocationFailed;
dsCloseDirNode(hAuthNodeRef);
}
return dsErr;
}
RT_C_DECLS_BEGIN
DECLEXPORT(FNAUTHENTRY3) AuthEntry;
RT_C_DECLS_END
DECLEXPORT(AuthResult) AUTHCALL AuthEntry(const char *pszCaller,
PAUTHUUID pUuid,
AuthGuestJudgement guestJudgement,
const char *pszUser,
const char *pszPassword,
const char *pszDomain,
int fLogon,
unsigned clientId)
{
RT_NOREF(pszCaller, pUuid, guestJudgement, pszDomain, clientId);
/* Validate input */
AssertPtrReturn(pszUser, AuthResultAccessDenied);
AssertPtrReturn(pszPassword, AuthResultAccessDenied);
/* Result to a default value */
AuthResult result = AuthResultAccessDenied;
/* Only process logon requests. */
if (!fLogon)
return result; /* Return value is ignored by the caller. */
tDirStatus dsErr = eDSNoErr;
tDirStatus dsCleanErr = eDSNoErr;
tDirReference hDirRef = 0;
/* Connect to the Directory Service. */
dsErr = dsOpenDirService(&hDirRef);
if (dsErr == eDSNoErr)
{
/* Fetch the default search node */
tDataListPtr pSearchNodeList = NULL;
dsErr = defaultSearchNodePath(hDirRef, &pSearchNodeList);
if (dsErr == eDSNoErr)
{
/* Open the default search node */
tDirNodeReference hSearchNodeRef = 0;
dsErr = dsOpenDirNode(hDirRef, pSearchNodeList, &hSearchNodeRef);
if (dsErr == eDSNoErr)
{
/* Search for the user info, fetch the authentication node &
* the authentication user name. This allows the client to
* specify a long user name even if the name which is used to
* authenticate has the short form. */
tDataListPtr pAuthNodeList = NULL;
dsErr = userAuthInfo(hDirRef, hSearchNodeRef, pszUser, &pAuthNodeList);
if (dsErr == eDSNoErr)
{
/* Open the authentication node and do the authentication. */
dsErr = authWithNode(hDirRef, pAuthNodeList, pszUser, pszPassword);
if (dsErr == eDSNoErr)
result = AuthResultAccessGranted;
dsCleanErr = dsDataListDeallocate(hDirRef, pAuthNodeList);
if (dsCleanErr == eDSNoErr)
free(pAuthNodeList);
}
dsCloseDirNode(hSearchNodeRef);
}
dsCleanErr = dsDataListDeallocate(hDirRef, pSearchNodeList);
if (dsCleanErr == eDSNoErr)
free(pSearchNodeList);
}
dsCloseDirService(hDirRef);
}
return result;
}
|
