| 1 | /** @file
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| 2 | *
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| 3 | * VirtualBox External Authentication Library:
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| 4 | * Mac OS X Authentication. This is based on
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| 5 | * http://developer.apple.com/mac/library/samplecode/CryptNoMore/
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| 6 | */
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| 7 |
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| 8 | /*
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| 9 | * Copyright (C) 2009-2016 Oracle Corporation
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| 10 | *
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| 11 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 12 | * available from http://www.virtualbox.org. This file is free software;
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| 13 | * you can redistribute it and/or modify it under the terms of the GNU
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| 14 | * General Public License (GPL) as published by the Free Software
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| 15 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 16 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 17 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 18 | */
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| 19 |
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| 20 | #include <iprt/cdefs.h>
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| 21 | #include <iprt/assert.h>
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| 22 |
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| 23 | #include <VBox/VBoxAuth.h>
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| 24 |
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| 25 | #include <DirectoryService/DirectoryService.h>
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| 26 |
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| 27 | /* Globals */
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| 28 | static const size_t s_cBufferSize = 32 * 1024;
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| 29 |
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| 30 | tDirStatus defaultSearchNodePath(tDirReference pDirRef, tDataListPtr *pdsNodePath)
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| 31 | {
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| 32 | tDirStatus dsErr = eDSNoErr;
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| 33 | /* Create a buffer for the resulting nodes */
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| 34 | tDataBufferPtr pTmpBuf = NULL;
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| 35 | pTmpBuf = dsDataBufferAllocate(pDirRef, s_cBufferSize);
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| 36 | if (pTmpBuf)
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| 37 | {
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| 38 | /* Try to find the default search node for local names */
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| 39 | UInt32 cNodes;
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| 40 | tContextData hCtx = 0;
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| 41 | dsErr = dsFindDirNodes(pDirRef, pTmpBuf, NULL, eDSLocalNodeNames, &cNodes, &hCtx);
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| 42 | /* Any nodes found? */
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| 43 | if ( dsErr == eDSNoErr
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| 44 | && cNodes >= 1)
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| 45 | /* The first path of the node list is what we looking for. */
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| 46 | dsErr = dsGetDirNodeName(pDirRef, pTmpBuf, 1, pdsNodePath);
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| 47 | else
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| 48 | dsErr = eDSNodeNotFound;
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| 49 |
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| 50 | if (hCtx) /* (DSoNodeConfig.m from DSTools-162 does exactly the same free if not-zero-regardless-of-return-code.) */
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| 51 | dsReleaseContinueData(pDirRef, hCtx);
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| 52 | dsDataBufferDeAllocate(pDirRef, pTmpBuf);
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| 53 | }
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| 54 | else
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| 55 | dsErr = eDSAllocationFailed;
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| 56 |
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| 57 | return dsErr;
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| 58 | }
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| 59 |
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| 60 | tDirStatus userAuthInfo(tDirReference pDirRef, tDirNodeReference pNodeRef, const char *pszUsername, tDataListPtr *ppAuthNodeListOut)
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| 61 | {
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| 62 | tDirStatus dsErr = eDSNoErr;
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| 63 | tDirStatus dsCleanErr = eDSNoErr;
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| 64 | /* Create a buffer for the resulting authentication info */
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| 65 | tDataBufferPtr pTmpBuf = dsDataBufferAllocate(pDirRef, s_cBufferSize);
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| 66 | if (pTmpBuf)
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| 67 | {
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| 68 | /* Create the necessary lists for kDSNAttrMetaNodeLocation and kDSNAttrRecordName. */
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| 69 | tDataListPtr pRecordType = dsBuildListFromStrings(pDirRef, kDSStdRecordTypeUsers, NULL);
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| 70 | tDataListPtr pRecordName = dsBuildListFromStrings(pDirRef, pszUsername, NULL);
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| 71 | tDataListPtr pRequestedAttributes = dsBuildListFromStrings(pDirRef, kDSNAttrMetaNodeLocation, kDSNAttrRecordName, NULL);
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| 72 | if (!( pRecordType == NULL
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| 73 | || pRecordName == NULL
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| 74 | || pRequestedAttributes == NULL))
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| 75 | {
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| 76 | /* Now search for the first matching record */
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| 77 | UInt32 cRecords = 1;
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| 78 | tContextData hCtx = 0;
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| 79 | dsErr = dsGetRecordList(pNodeRef,
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| 80 | pTmpBuf,
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| 81 | pRecordName,
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| 82 | eDSExact,
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| 83 | pRecordType,
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| 84 | pRequestedAttributes,
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| 85 | false,
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| 86 | &cRecords,
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| 87 | &hCtx);
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| 88 | if ( dsErr == eDSNoErr
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| 89 | && cRecords >= 1)
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| 90 | {
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| 91 | /* Process the first found record. Look at any attribute one by one. */
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| 92 | tAttributeListRef hRecAttrListRef = 0;
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| 93 | tRecordEntryPtr pRecEntry = NULL;
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| 94 | tDataListPtr pAuthNodeList = NULL;
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| 95 | dsErr = dsGetRecordEntry(pNodeRef, pTmpBuf, 1, &hRecAttrListRef, &pRecEntry);
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| 96 | if (dsErr == eDSNoErr)
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| 97 | {
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| 98 | for (size_t i = 1; i <= pRecEntry->fRecordAttributeCount; ++i)
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| 99 | {
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| 100 | tAttributeValueListRef hAttrValueListRef = 0;
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| 101 | tAttributeEntryPtr pAttrEntry = NULL;
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| 102 | /* Get the information for this attribute. */
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| 103 | dsErr = dsGetAttributeEntry(pNodeRef, pTmpBuf, hRecAttrListRef, i,
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| 104 | &hAttrValueListRef, &pAttrEntry);
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| 105 | if (dsErr == eDSNoErr)
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| 106 | {
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| 107 | tAttributeValueEntryPtr pValueEntry = NULL;
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| 108 | /* Has any value? */
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| 109 | if (pAttrEntry->fAttributeValueCount > 0)
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| 110 | {
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| 111 | dsErr = dsGetAttributeValue(pNodeRef, pTmpBuf, 1, hAttrValueListRef, &pValueEntry);
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| 112 | if (dsErr == eDSNoErr)
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| 113 | {
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| 114 | /* Check for kDSNAttrMetaNodeLocation */
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| 115 | if (strcmp(pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrMetaNodeLocation) == 0)
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| 116 | {
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| 117 | /* Convert the meta location attribute to a path node list */
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| 118 | pAuthNodeList = dsBuildFromPath(pDirRef,
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| 119 | pValueEntry->fAttributeValueData.fBufferData,
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| 120 | "/");
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| 121 | if (pAuthNodeList == NULL)
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| 122 | dsErr = eDSAllocationFailed;
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| 123 | }
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| 124 | }
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| 125 | }
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| 126 |
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| 127 | if (pValueEntry != NULL)
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| 128 | dsDeallocAttributeValueEntry(pDirRef, pValueEntry);
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| 129 | if (hAttrValueListRef)
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| 130 | dsCloseAttributeValueList(hAttrValueListRef);
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| 131 | if (pAttrEntry != NULL)
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| 132 | dsDeallocAttributeEntry(pDirRef, pAttrEntry);
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| 133 |
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| 134 | if (dsErr != eDSNoErr)
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| 135 | break;
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| 136 | }
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| 137 | }
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| 138 | }
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| 139 | /* Copy the results */
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| 140 | if (dsErr == eDSNoErr)
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| 141 | {
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| 142 | if (pAuthNodeList != NULL)
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| 143 | {
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| 144 | /* Copy out results. */
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| 145 | *ppAuthNodeListOut = pAuthNodeList;
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| 146 | pAuthNodeList = NULL;
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| 147 | }
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| 148 | else
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| 149 | dsErr = eDSAttributeNotFound;
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| 150 | }
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| 151 |
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| 152 | if (pAuthNodeList != NULL)
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| 153 | {
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| 154 | dsCleanErr = dsDataListDeallocate(pDirRef, pAuthNodeList);
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| 155 | if (dsCleanErr == eDSNoErr)
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| 156 | free(pAuthNodeList);
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| 157 | }
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| 158 | if (hRecAttrListRef)
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| 159 | dsCloseAttributeList(hRecAttrListRef);
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| 160 | if (pRecEntry != NULL)
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| 161 | dsDeallocRecordEntry(pDirRef, pRecEntry);
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| 162 | }
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| 163 | else
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| 164 | dsErr = eDSRecordNotFound;
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| 165 | if (hCtx)
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| 166 | dsReleaseContinueData(pDirRef, hCtx);
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| 167 | }
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| 168 | else
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| 169 | dsErr = eDSAllocationFailed;
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| 170 | if (pRequestedAttributes != NULL)
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| 171 | {
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| 172 | dsCleanErr = dsDataListDeallocate(pDirRef, pRequestedAttributes);
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| 173 | if (dsCleanErr == eDSNoErr)
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| 174 | free(pRequestedAttributes);
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| 175 | }
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| 176 | if (pRecordName != NULL)
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| 177 | {
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| 178 | dsCleanErr = dsDataListDeallocate(pDirRef, pRecordName);
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| 179 | if (dsCleanErr == eDSNoErr)
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| 180 | free(pRecordName);
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| 181 | }
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| 182 | if (pRecordType != NULL)
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| 183 | {
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| 184 | dsCleanErr = dsDataListDeallocate(pDirRef, pRecordType);
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| 185 | if (dsCleanErr == eDSNoErr)
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| 186 | free(pRecordType);
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| 187 | }
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| 188 | dsDataBufferDeAllocate(pDirRef, pTmpBuf);
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| 189 | }
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| 190 | else
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| 191 | dsErr = eDSAllocationFailed;
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| 192 |
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| 193 | return dsErr;
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| 194 | }
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| 195 |
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| 196 | tDirStatus authWithNode(tDirReference pDirRef, tDataListPtr pAuthNodeList, const char *pszUsername, const char *pszPassword)
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| 197 | {
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| 198 | tDirStatus dsErr = eDSNoErr;
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| 199 | /* Open the authentication node. */
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| 200 | tDirNodeReference hAuthNodeRef = 0;
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| 201 | dsErr = dsOpenDirNode(pDirRef, pAuthNodeList, &hAuthNodeRef);
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| 202 | if (dsErr == eDSNoErr)
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| 203 | {
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| 204 | /* How like we to authenticate! */
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| 205 | tDataNodePtr pAuthMethod = dsDataNodeAllocateString(pDirRef, kDSStdAuthNodeNativeClearTextOK);
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| 206 | if (pAuthMethod)
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| 207 | {
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| 208 | /* Create the memory holding the authentication data. The data
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| 209 | * structure consists of 4 byte length of the username + zero byte,
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| 210 | * the username itself, a 4 byte length of the password & the
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| 211 | * password itself + zero byte. */
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| 212 | tDataBufferPtr pAuthOutBuf = dsDataBufferAllocate(pDirRef, s_cBufferSize);
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| 213 | if (pAuthOutBuf)
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| 214 | {
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| 215 | size_t cUserName = strlen(pszUsername) + 1;
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| 216 | size_t cPassword = strlen(pszPassword) + 1;
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| 217 | unsigned long cLen = 0;
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| 218 | tDataBufferPtr pAuthInBuf = dsDataBufferAllocate(pDirRef, sizeof(cLen) + cUserName + sizeof(cLen) + cPassword);
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| 219 | if (pAuthInBuf)
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| 220 | {
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| 221 | /* Move the data into the buffer. */
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| 222 | pAuthInBuf->fBufferLength = 0;
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| 223 | /* Length of the username */
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| 224 | cLen = cUserName;
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| 225 | memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], &cLen, sizeof(cLen));
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| 226 | pAuthInBuf->fBufferLength += sizeof(cLen);
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| 227 | /* The username itself */
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| 228 | memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], pszUsername, cUserName);
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| 229 | pAuthInBuf->fBufferLength += cUserName;
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| 230 | /* Length of the password */
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| 231 | cLen = cPassword;
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| 232 | memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], &cLen, sizeof(cLen));
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| 233 | pAuthInBuf->fBufferLength += sizeof(cLen);
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| 234 | /* The password itself */
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| 235 | memcpy(&pAuthInBuf->fBufferData[pAuthInBuf->fBufferLength], pszPassword, cPassword);
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| 236 | pAuthInBuf->fBufferLength += cPassword;
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| 237 | /* Now authenticate */
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| 238 | dsErr = dsDoDirNodeAuth(hAuthNodeRef, pAuthMethod, true, pAuthInBuf, pAuthOutBuf, NULL);
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| 239 | /* Clean up. */
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| 240 | dsDataBufferDeAllocate(pDirRef, pAuthInBuf);
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| 241 | }
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| 242 | else
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| 243 | dsErr = eDSAllocationFailed;
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| 244 | dsDataBufferDeAllocate(pDirRef, pAuthOutBuf);
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| 245 | }
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| 246 | else
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| 247 | dsErr = eDSAllocationFailed;
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| 248 | dsDataNodeDeAllocate(pDirRef, pAuthMethod);
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| 249 | }
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| 250 | else
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| 251 | dsErr = eDSAllocationFailed;
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| 252 | dsCloseDirNode(hAuthNodeRef);
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| 253 | }
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| 254 |
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| 255 | return dsErr;
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| 256 | }
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| 257 |
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| 258 | RT_C_DECLS_BEGIN
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| 259 | DECLEXPORT(FNAUTHENTRY3) AuthEntry;
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| 260 | RT_C_DECLS_END
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| 261 |
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| 262 | DECLEXPORT(AuthResult) AUTHCALL AuthEntry(const char *pszCaller,
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| 263 | PAUTHUUID pUuid,
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| 264 | AuthGuestJudgement guestJudgement,
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| 265 | const char *pszUser,
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| 266 | const char *pszPassword,
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| 267 | const char *pszDomain,
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| 268 | int fLogon,
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| 269 | unsigned clientId)
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| 270 | {
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| 271 | RT_NOREF(pszCaller, pUuid, guestJudgement, pszDomain, clientId);
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| 272 |
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| 273 | /* Validate input */
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| 274 | AssertPtrReturn(pszUser, AuthResultAccessDenied);
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| 275 | AssertPtrReturn(pszPassword, AuthResultAccessDenied);
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| 276 |
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| 277 | /* Result to a default value */
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| 278 | AuthResult result = AuthResultAccessDenied;
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| 279 |
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| 280 | /* Only process logon requests. */
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| 281 | if (!fLogon)
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| 282 | return result; /* Return value is ignored by the caller. */
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| 283 |
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| 284 | tDirStatus dsErr = eDSNoErr;
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| 285 | tDirStatus dsCleanErr = eDSNoErr;
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| 286 | tDirReference hDirRef = 0;
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| 287 | /* Connect to the Directory Service. */
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| 288 | dsErr = dsOpenDirService(&hDirRef);
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| 289 | if (dsErr == eDSNoErr)
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| 290 | {
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| 291 | /* Fetch the default search node */
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| 292 | tDataListPtr pSearchNodeList = NULL;
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| 293 | dsErr = defaultSearchNodePath(hDirRef, &pSearchNodeList);
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| 294 | if (dsErr == eDSNoErr)
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| 295 | {
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| 296 | /* Open the default search node */
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| 297 | tDirNodeReference hSearchNodeRef = 0;
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| 298 | dsErr = dsOpenDirNode(hDirRef, pSearchNodeList, &hSearchNodeRef);
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| 299 | if (dsErr == eDSNoErr)
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| 300 | {
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| 301 | /* Search for the user info, fetch the authentication node &
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| 302 | * the authentication user name. This allows the client to
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| 303 | * specify a long user name even if the name which is used to
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| 304 | * authenticate has the short form. */
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| 305 | tDataListPtr pAuthNodeList = NULL;
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| 306 | dsErr = userAuthInfo(hDirRef, hSearchNodeRef, pszUser, &pAuthNodeList);
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| 307 | if (dsErr == eDSNoErr)
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| 308 | {
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| 309 | /* Open the authentication node and do the authentication. */
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| 310 | dsErr = authWithNode(hDirRef, pAuthNodeList, pszUser, pszPassword);
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| 311 | if (dsErr == eDSNoErr)
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| 312 | result = AuthResultAccessGranted;
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| 313 | dsCleanErr = dsDataListDeallocate(hDirRef, pAuthNodeList);
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| 314 | if (dsCleanErr == eDSNoErr)
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| 315 | free(pAuthNodeList);
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| 316 | }
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| 317 | dsCloseDirNode(hSearchNodeRef);
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| 318 | }
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| 319 | dsCleanErr = dsDataListDeallocate(hDirRef, pSearchNodeList);
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| 320 | if (dsCleanErr == eDSNoErr)
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| 321 | free(pSearchNodeList);
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| 322 | }
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| 323 | dsCloseDirService(hDirRef);
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| 324 | }
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| 325 |
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| 326 | return result;
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| 327 | }
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| 328 |
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