예제 #1
0
파일: main.c 프로젝트: Deanzou/ppp
//----------------------------------------------------------------------
//	dsauth_find_user_node
//----------------------------------------------------------------------
static int dsauth_find_user_node(tDirReference dirRef, char *user_name, tDirNodeReference *user_node,
                        tAttributeValueEntryPtr *recordNameAttr, tAttributeValueEntryPtr *authAuthorityAttr)
{
    
    tDirStatus				dsResult = eDSNoErr;
    tDataListPtr			userPathDataListPtr = 0;
    UInt32					searchNodeCount;
    tAttributeValueEntryPtr	userNodePath = 0;
    tDirNodeReference 		searchNodeRef = 0;

    
    *user_node = 0;	// init return values
    *recordNameAttr = 0;
    *authAuthorityAttr = 0;

    // get search node ref
    if ((dsResult = dsauth_get_search_node_ref(dirRef, 1, &searchNodeRef, &searchNodeCount)) == eDSNoErr) {
        // get the meta node location attribute from the user's record
        dsResult =  dsauth_get_user_attr(dirRef, searchNodeRef, user_name, kDSNAttrMetaNodeLocation, &userNodePath);
        if (dsResult == eDSNoErr && userNodePath != 0) {
            // open the user node and return the node ref
            if ((userPathDataListPtr = dsBuildFromPath(dirRef, userNodePath->fAttributeValueData.fBufferData, "/"))) {
                dsResult = dsOpenDirNode(dirRef, userPathDataListPtr, user_node);
                dsDataListDeallocate(dirRef, userPathDataListPtr);
            }
            if (dsResult == eDSNoErr)
                dsResult = dsauth_get_user_attr(dirRef, searchNodeRef, user_name, kDSNAttrRecordName, recordNameAttr);
		// DSAuth_hex_print("authAuth find_u_node unmae", user_name, strlen(user_name));
		// DSAuth_hex_print("authAuth find_u_node recName", (*recordNameAttr)->fAttributeValueData.fBufferData, (*recordNameAttr)->fAttributeValueData.fBufferLength);
			if (dsResult == eDSNoErr)
                dsResult = dsauth_get_user_attr(dirRef, searchNodeRef, user_name, kDSNAttrAuthenticationAuthority, authAuthorityAttr);
		// DSAuth_hex_print("authAuth find_u_node", (*authAuthorityAttr)->fAttributeValueData.fBufferData, (*authAuthorityAttr)->fAttributeValueData.fBufferLength);
        }
        if (userNodePath)
            dsDeallocAttributeValueEntry(dirRef, userNodePath);
        dsCloseDirNode(searchNodeRef);		// close the search node ref
    }
    if (dsResult != eDSNoErr || *user_node == 0 || *recordNameAttr == 0 || *authAuthorityAttr == 0) {
        if (*user_node)
            dsCloseDirNode(*user_node);
        if (*recordNameAttr)
            dsDeallocAttributeValueEntry(dirRef, *recordNameAttr);
        if (*authAuthorityAttr)
            dsDeallocAttributeValueEntry(dirRef, *authAuthorityAttr);
        return -1;
    }
    return 0;
}
예제 #2
0
파일: main.c 프로젝트: Deanzou/ppp
//----------------------------------------------------------------------
//	dsaccess_authorize_user
//----------------------------------------------------------------------
static int dsaccess_authorize_user(u_char* name, int len)
{

    tDirReference			dirRef;
    tDirStatus				dsResult = eDSNoErr;
    int						authorized = 0;
    tDirNodeReference 		searchNodeRef;
    tAttributeValueEntryPtr	gUID;
    UInt32					searchNodeCount;
    char*					user_name;
	uuid_t					userid;
	int						result;
	int						ismember;
    
    if (len < 1) {
        error("DSAccessControl plugin: invalid user name has zero length\n");
        return 0;
    }
    if ((user_name = (char*)malloc(len + 1)) == 0) {
        error("DSAccessControl plugin: unable to allocate memory for user name\n");
        return 0;
    }
    bcopy(name, user_name, len);
    *(user_name + len) = 0;

    if ((dsResult = dsOpenDirService(&dirRef)) == eDSNoErr) {  
        // get the search node ref
        if ((dsResult = dsauth_get_search_node_ref(dirRef, 1, &searchNodeRef, &searchNodeCount)) == eDSNoErr) {
            // get the user's generated user Id
            if ((dsResult = dsauth_get_user_attr(dirRef, searchNodeRef, user_name, kDS1AttrGeneratedUID, &gUID)) == eDSNoErr) {
                if (gUID != 0) {
					if (!mbr_string_to_uuid(gUID->fAttributeValueData.fBufferData, userid)) {
						// check if user is member authorized
						result = mbr_check_service_membership(userid, VPN_SERVICE_NAME, &ismember);
						if (result == ENOENT || (result == 0 && ismember != 0))
							authorized = 1;
					}
					dsDeallocAttributeValueEntry(dirRef, gUID);
                }
            }
            dsCloseDirNode(searchNodeRef);		// close the search node
        }
        dsCloseDirService(dirRef);
    }

    if (authorized)
        notice("DSAccessControl plugin: User '%s' authorized for access\n", user_name);
    else
        notice("DSAccessControl plugin: User '%s' not authorized for access\n", user_name);
    free(user_name);
    return authorized;
}
예제 #3
0
void LoadAuthAuthorities( CDSLocalPlugin* inPlugin, tRecordReference inRecordRef, CAuthAuthority &inOutAATank )
{
	tDirStatus status = eDSNoErr;
	tAttributeEntryPtr attributeInfo = NULL;
	tAttributeValueEntryPtr valueEntryPtr = NULL;
	
	status = inPlugin->GetRecAttribInfo( inRecordRef, kDSNAttrAuthenticationAuthority, &attributeInfo );
	if ( status == eDSNoErr && attributeInfo != NULL )
	{
		for ( UInt32 avIndex = 1; avIndex <= attributeInfo->fAttributeValueCount; avIndex++ )
		{
			status = inPlugin->GetRecAttrValueByIndex( inRecordRef, kDSNAttrAuthenticationAuthority, avIndex, &valueEntryPtr );
			if ( status == eDSNoErr ) {
				inOutAATank.AddValue( valueEntryPtr->fAttributeValueData.fBufferData );
				dsDeallocAttributeValueEntry( 0, valueEntryPtr );
			}
		}
		
		dsDeallocAttributeEntry( 0, attributeInfo );
	}
}
예제 #4
0
파일: main.c 프로젝트: Deanzou/ppp
static int dsauth_chap(u_char *name, u_char *ourname, int id,
			struct chap_digest_type *digest,
			unsigned char *challenge, unsigned char *response,
			unsigned char *message, int message_space)
{
    tDirReference				dirRef;
    tDirNodeReference			userNode = 0;
    tDataNodePtr				authTypeDataNodePtr = 0;
    tDataBufferPtr				authDataBufPtr = 0;
    tDataBufferPtr				responseDataBufPtr = 0;
    tAttributeValueEntryPtr 	recordNameAttr = 0;
    tAttributeValueEntryPtr 	authAuthorityAttr = 0;
    tDirStatus					dsResult = eDSNoErr;
    int							authResult = 0;
    char						*ptr;
    MS_Chap2Response			*resp;  
    u_int32_t					userShortNameSize;
    u_int32_t					userNameSize = strlen((char*)name);
    u_int32_t					authDataSize;
    int							challenge_len, response_len;
	CFMutableDictionaryRef		serviceInfo = 0;
	CFMutableDictionaryRef		eventDetail;
	CFDictionaryRef				interface;
	CFStringRef					subtypeRef;
	CFStringRef					addrRef;

    
    challenge_len = *challenge++;	/* skip length, is 16 */
    response_len = *response++;

    // currently only support MS-CHAPv2
    if (digest->code != CHAP_MICROSOFT_V2
    	||	response_len != MS_CHAP2_RESPONSE_LEN
    	||	challenge_len != CHALLENGE_SIZE)
        return 0;

    resp = (MS_Chap2Response*)response;
    if ((dsResult = dsOpenDirService(&dirRef)) == eDSNoErr) {
	
        if ((authTypeDataNodePtr = dsDataNodeAllocateString(dirRef, kDSStdAuthMSCHAP2)) == 0) {
            error("DSAuth plugin: Could not allocate data buffer\n");
            goto cleanup;
        }
		
		//  setup service info
		interface = CFDictionaryGetValue(systemOptions, kRASEntInterface);
		if (interface && CFGetTypeID(interface) == CFDictionaryGetTypeID()) {
			subtypeRef = CFDictionaryGetValue(interface, kRASPropInterfaceSubType);		
			if (subtypeRef && CFGetTypeID(subtypeRef) == CFStringGetTypeID()) {	
				serviceInfo = CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
				if (serviceInfo) {
					eventDetail = CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
					if (eventDetail) {
						addrRef = CFStringCreateWithCString(0, remoteaddress, kCFStringEncodingUTF8);
						if (addrRef) {
							CFDictionaryAddValue(eventDetail, CFSTR("ClientIP"),  addrRef);
							CFRelease(addrRef);	
						}
						if (CFStringCompare(subtypeRef, kRASValInterfaceSubTypeL2TP, 0) == kCFCompareEqualTo) {
							CFDictionaryAddValue(eventDetail, CFSTR("HostPort"),  CFSTR("1701"));
							CFDictionaryAddValue(eventDetail, CFSTR("ProtocolName"),  CFSTR("L2TP"));
							CFDictionaryAddValue(eventDetail, CFSTR("ProtocolVersion"),  CFSTR("2"));
						} else if (CFStringCompare(subtypeRef, kRASValInterfaceSubTypePPTP, 0) == kCFCompareEqualTo) {
							CFDictionaryAddValue(eventDetail, CFSTR("HostPort"),  CFSTR("1723"));
							CFDictionaryAddValue(eventDetail, CFSTR("ProtocolName"),  CFSTR("PPTP"));
							CFDictionaryAddValue(eventDetail, CFSTR("ProtocolVersion"),  CFSTR("1"));
						} else
							CFDictionaryAddValue(eventDetail, CFSTR("ProtocolName"),  subtypeRef);
						
						CFDictionaryAddValue(eventDetail, CFSTR("ServiceName"),  CFSTR("VPN"));
						
						// add eventDetail to serviceInfo dict
						CFDictionaryAddValue(serviceInfo, CFSTR("ServiceInformation"), eventDetail);
						CFRelease(eventDetail);
						
						// allocate response buffer with service info
						if (dsServiceInformationAllocate(serviceInfo, BUF_LEN, &responseDataBufPtr) != eDSNoErr) {
							error("DSAuth plugin: Unable to allocate service info buffer\n");
							goto cleanup;
						}
					} else {
						error("DSAuth plugin: Unable to allocate eventDetail dictionary\n");
						goto cleanup;
					}
				} else {
					error("DSAuth plugin: Unable to allocate serviceInfo dictionary\n");
					goto cleanup;
				}
			} else {
				error("DSAuth plugin: No Interface subtype found\n");
				goto cleanup;
			}
		} else {
			error("DSAuth plugin: No Interface dictionary found\n");
			goto cleanup;
		}

        if (dsauth_find_user_node(dirRef, (char*)name, &userNode, &recordNameAttr, &authAuthorityAttr) == 0) {  
            userShortNameSize = recordNameAttr->fAttributeValueData.fBufferLength;
            authDataSize = userNameSize + userShortNameSize + NT_RESPONSE_SIZE + (2 * CHALLENGE_SIZE) + (5 * sizeof(u_int32_t));   
            if ((authDataBufPtr = dsDataBufferAllocate(dirRef, authDataSize)) != 0) {   
                authDataBufPtr->fBufferLength = authDataSize;
                 
                // setup the response buffer           
                ptr = (char*)(authDataBufPtr->fBufferData);
                
                // 4 byte length & user name
                *((u_int32_t*)ptr) = userShortNameSize;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, recordNameAttr->fAttributeValueData.fBufferData, userShortNameSize);
                ptr += userShortNameSize;
                
                // 4 byte length & server challenge
                *((u_int32_t*)ptr) = CHALLENGE_SIZE;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, challenge, CHALLENGE_SIZE);
                ptr += CHALLENGE_SIZE;
                
                // 4 byte length & peer challenge
                *((u_int32_t*)ptr) = CHALLENGE_SIZE;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, resp->PeerChallenge, CHALLENGE_SIZE);
                ptr += CHALLENGE_SIZE;
                
                // 4 byte length & client digest
                *((u_int32_t*)ptr) = NT_RESPONSE_SIZE;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, resp->NTResp, NT_RESPONSE_SIZE);
                ptr += NT_RESPONSE_SIZE;
                
                // 4 byte length & user name (repeated)
                *((u_int32_t*)ptr) = userNameSize;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, name, userNameSize);
                
                if ((dsResult = dsDoDirNodeAuth(userNode, authTypeDataNodePtr, TRUE, authDataBufPtr, 
                        responseDataBufPtr, 0)) == eDSNoErr) {						
                    
                    // setup return data
                    if ((responseDataBufPtr->fBufferLength == MS_AUTH_RESPONSE_LENGTH + 4)
                                && *((u_int32_t*)(responseDataBufPtr->fBufferData)) == MS_AUTH_RESPONSE_LENGTH) {

                        responseDataBufPtr->fBufferData[4 + MS_AUTH_RESPONSE_LENGTH] = 0;
                         if (resp->Flags[0])
                                slprintf((char*)message, message_space, "S=%s", responseDataBufPtr->fBufferData + 4);
                        else
                                slprintf((char*)message, message_space, "S=%s M=%s",
                                        responseDataBufPtr->fBufferData + 4, "Access granted");
                        authResult = 1;
			if ((ccp_wantoptions[0].mppe)) {
			    if (!dsauth_set_mppe_keys(dirRef, userNode, response, authAuthorityAttr, challenge)) {
				error("DSAuth plugin: MPPE key required, but its retrieval failed.\n");
				authResult = 0;
			    }
			} 
                    } 
                } 
            }
            dsCloseDirNode(userNode);
            dsDeallocAttributeValueEntry(dirRef, recordNameAttr);
            dsDeallocAttributeValueEntry(dirRef, authAuthorityAttr);
        }
    
cleanup:
		if (serviceInfo)
			CFRelease(serviceInfo);
        if (responseDataBufPtr)
            dsDataBufferDeAllocate(dirRef, responseDataBufPtr);
        if (authTypeDataNodePtr)
            dsDataNodeDeAllocate(dirRef, authTypeDataNodePtr);
        if (authDataBufPtr)
            dsDataBufferDeAllocate(dirRef, authDataBufPtr);

        dsCloseDirService(dirRef);
    }

    return authResult;
}
예제 #5
0
파일: main.c 프로젝트: Deanzou/ppp
//----------------------------------------------------------------------
//      dsauth_pap
//----------------------------------------------------------------------
static int dsauth_pap(char *user, char *passwd, char **msgp, struct wordlist **paddrs, struct wordlist **popts)
{
    tDirReference				dirRef;
    tDirNodeReference			userNode = 0;
    tDataNodePtr				authTypeDataNodePtr = 0;
    tDataBufferPtr				authDataBufPtr = 0;
    tDataBufferPtr				responseDataBufPtr = 0;
    tAttributeValueEntryPtr 	recordNameAttr = 0;
    tAttributeValueEntryPtr 	authAuthorityAttr = 0;
    tDirStatus					dsResult = eDSNoErr;
    char						*ptr;
    int							authResult = 0;
    u_int32_t					userShortNameSize;
    
    u_int32_t					passwordSize = strlen(passwd);
    u_int32_t					authDataSize;

    if ((dsResult = dsOpenDirService(&dirRef)) == eDSNoErr) {    

        if ((responseDataBufPtr = dsDataBufferAllocate(dirRef, BUF_LEN)) == 0) {
            error("DSAuth plugin: Could not allocate data buffer\n");
            goto cleanup;
        }
        if ((authTypeDataNodePtr = dsDataNodeAllocateString(dirRef, kDSStdAuthNodeNativeNoClearText)) == 0) {
            error("DSAuth plugin: Could not allocate data buffer\n");
            goto cleanup;
        }

        if (dsauth_find_user_node(dirRef, user, &userNode, &recordNameAttr, &authAuthorityAttr) == 0) {            
            userShortNameSize = recordNameAttr->fAttributeValueData.fBufferLength;
            authDataSize = userShortNameSize + passwordSize + (2 * sizeof(u_int32_t));
            
            if ((authDataBufPtr = dsDataBufferAllocate(dirRef, authDataSize)) != 0) {   
                authDataBufPtr->fBufferLength = authDataSize;
            
                /* store user name and password into the auth buffer in the correct format */
                ptr = (char*)(authDataBufPtr->fBufferData);
                
                // 4 byte length & user name
                *((u_int32_t*)ptr) =  userShortNameSize;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, recordNameAttr->fAttributeValueData.fBufferData, userShortNameSize);
                ptr += userShortNameSize;
                
                // 4 byte length & password
                *((u_int32_t*)ptr) = passwordSize;
                ptr += sizeof(u_int32_t);
                memcpy(ptr, passwd, passwordSize);
                
                if ((dsResult = dsDoDirNodeAuth(userNode, authTypeDataNodePtr, TRUE, authDataBufPtr, 
                        responseDataBufPtr, 0)) == eDSNoErr) {						
                    authResult = 1;
                    info("DSAuth plugin: user authentication successful\n");
                }
                
                bzero(authDataBufPtr->fBufferData, authDataSize);	// don't leave password in buffer
            }
            dsCloseDirNode(userNode); 					// returned from dsauth_find_user()
            dsDeallocAttributeValueEntry(dirRef, recordNameAttr); 
            dsDeallocAttributeValueEntry(dirRef, authAuthorityAttr); 
        }
    
cleanup:

        if (responseDataBufPtr)
            dsDataBufferDeAllocate(dirRef, responseDataBufPtr);
        if (authTypeDataNodePtr)
            dsDataNodeDeAllocate(dirRef, authTypeDataNodePtr);
        if (authDataBufPtr)
            dsDataBufferDeAllocate(dirRef, authDataBufPtr);

        dsCloseDirService(dirRef);
    }
    
    return authResult;

}
예제 #6
0
static long od_check_passwd(char const *uname, char const *password)
{
	long			result 		= eDSAuthFailed;
	tDirReference		dsRef 		= 0;
	tDataBuffer		*tDataBuff;
	tDirNodeReference	nodeRef 	= 0;
	long			status 		= eDSNoErr;
	tContextData		context		= 0;
	uint32_t		nodeCount 	= 0;
	uint32_t		attrIndex 	= 0;
	tDataList		*nodeName 	= NULL;
	tAttributeEntryPtr	pAttrEntry 	= NULL;
	tDataList		*pRecName 	= NULL;
	tDataList		*pRecType 	= NULL;
	tDataList		*pAttrType 	= NULL;
	uint32_t		recCount 	= 0;
	tRecordEntry		*pRecEntry 	= NULL;
	tAttributeListRef	attrListRef 	= 0;
	char			*pUserLocation 	= NULL;
	char			*pUserName 	= NULL;
	tAttributeValueListRef	valueRef 	= 0;
	tAttributeValueEntry	*pValueEntry 	= NULL;
	tDataList		*pUserNode 	= NULL;
	tDirNodeReference	userNodeRef 	= 0;
	tDataBuffer		*pStepBuff 	= NULL;
	tDataNode		*pAuthType 	= NULL;
	tAttributeValueEntry	*pRecordType 	= NULL;
	uint32_t		uiCurr 		= 0;
	uint32_t		uiLen 		= 0;
	uint32_t		pwLen 		= 0;
	
	if (!uname || !password)
		return result;
	
	do
	{		
		status = dsOpenDirService( &dsRef );
		if ( status != eDSNoErr )
			return result;
		
		tDataBuff = dsDataBufferAllocate( dsRef, 4096 );
		if (!tDataBuff)
			break;
		
		/* find user on search node */
		status = dsFindDirNodes( dsRef, tDataBuff, NULL, eDSSearchNodeName, &nodeCount, &context );
		if (status != eDSNoErr || nodeCount < 1)
			break;
		
		status = dsGetDirNodeName( dsRef, tDataBuff, 1, &nodeName );
		if (status != eDSNoErr)
			break;
		
		status = dsOpenDirNode( dsRef, nodeName, &nodeRef );
		dsDataListDeallocate( dsRef, nodeName );
		free( nodeName );
		nodeName = NULL;
		if (status != eDSNoErr)
			break;

		pRecName = dsBuildListFromStrings( dsRef, uname, NULL );
		pRecType = dsBuildListFromStrings( dsRef, kDSStdRecordTypeUsers, kDSStdRecordTypeComputers, kDSStdRecordTypeMachines, NULL );
		pAttrType = dsBuildListFromStrings( dsRef, kDSNAttrMetaNodeLocation, kDSNAttrRecordName, kDSNAttrRecordType, NULL );
		
		recCount = 1;
		status = dsGetRecordList( nodeRef, tDataBuff, pRecName, eDSExact, pRecType,
													pAttrType, 0, &recCount, &context );
		if ( status != eDSNoErr || recCount == 0 )
			break;
				
		status = dsGetRecordEntry( nodeRef, tDataBuff, 1, &attrListRef, &pRecEntry );
		if ( status != eDSNoErr )
			break;
		
		for ( attrIndex = 1; (attrIndex <= pRecEntry->fRecordAttributeCount) && (status == eDSNoErr); attrIndex++ )
		{
			status = dsGetAttributeEntry( nodeRef, tDataBuff, attrListRef, attrIndex, &valueRef, &pAttrEntry );
			if ( status == eDSNoErr && pAttrEntry != NULL )
			{
				if ( strcmp( pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrMetaNodeLocation ) == 0 )
				{
					status = dsGetAttributeValue( nodeRef, tDataBuff, 1, valueRef, &pValueEntry );
					if ( status == eDSNoErr && pValueEntry != NULL )
					{
						pUserLocation = (char *) calloc( pValueEntry->fAttributeValueData.fBufferLength + 1, sizeof(char) );
						memcpy( pUserLocation, pValueEntry->fAttributeValueData.fBufferData, pValueEntry->fAttributeValueData.fBufferLength );
					}
				}
				else
				if ( strcmp( pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrRecordName ) == 0 )
				{
					status = dsGetAttributeValue( nodeRef, tDataBuff, 1, valueRef, &pValueEntry );
					if ( status == eDSNoErr && pValueEntry != NULL )
					{
						pUserName = (char *) calloc( pValueEntry->fAttributeValueData.fBufferLength + 1, sizeof(char) );
						memcpy( pUserName, pValueEntry->fAttributeValueData.fBufferData, pValueEntry->fAttributeValueData.fBufferLength );
					}
				}
				else
				if ( strcmp( pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrRecordType ) == 0 )
				{
					status = dsGetAttributeValue( nodeRef, tDataBuff, 1, valueRef, &pValueEntry );
					if ( status == eDSNoErr && pValueEntry != NULL )
					{
						pRecordType = pValueEntry;
						pValueEntry = NULL;
					}
				}
				
				if ( pValueEntry != NULL ) {
					dsDeallocAttributeValueEntry( dsRef, pValueEntry );
					pValueEntry = NULL;
				}
				if ( pAttrEntry != NULL ) {
					dsDeallocAttributeEntry( dsRef, pAttrEntry );
					pAttrEntry = NULL;
				}
				dsCloseAttributeValueList( valueRef );
				valueRef = 0;
			}
		}
		
		pUserNode = dsBuildFromPath( dsRef, pUserLocation, "/" );
		status = dsOpenDirNode( dsRef, pUserNode, &userNodeRef );
		dsDataListDeallocate( dsRef, pUserNode );
		free( pUserNode );
		pUserNode = NULL;
		if ( status != eDSNoErr )
			break;
		
		pStepBuff = dsDataBufferAllocate( dsRef, 128 );
		
		pAuthType = dsDataNodeAllocateString( dsRef, kDSStdAuthNodeNativeClearTextOK );
		uiCurr = 0;
		
		/* User name */
		uiLen = (uint32_t)strlen( pUserName );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), &uiLen, sizeof(uiLen) );
		uiCurr += (uint32_t)sizeof( uiLen );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), pUserName, uiLen );
		uiCurr += uiLen;
		
		/* pw */
		pwLen = (uint32_t)strlen( password );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), &pwLen, sizeof(pwLen) );
		uiCurr += (uint32_t)sizeof( pwLen );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), password, pwLen );
		uiCurr += pwLen;
		
		tDataBuff->fBufferLength = uiCurr;
		
		result = dsDoDirNodeAuthOnRecordType( userNodeRef, pAuthType, 1, tDataBuff, pStepBuff, NULL, &pRecordType->fAttributeValueData );
	}
	while ( 0 );
	
	/* clean up */
	if (pAuthType != NULL) {
		dsDataNodeDeAllocate( dsRef, pAuthType );
		pAuthType = NULL;
	}
	if (pRecordType != NULL) {
		dsDeallocAttributeValueEntry( dsRef, pRecordType );
		pRecordType = NULL;
	}
	if (tDataBuff != NULL) {
		bzero( tDataBuff, tDataBuff->fBufferSize );
		dsDataBufferDeAllocate( dsRef, tDataBuff );
		tDataBuff = NULL;
	}
	if (pStepBuff != NULL) {
		dsDataBufferDeAllocate( dsRef, pStepBuff );
		pStepBuff = NULL;
	}
	if (pUserLocation != NULL) {
		free(pUserLocation);
		pUserLocation = NULL;
	}
	if (pRecName != NULL) {
		dsDataListDeallocate( dsRef, pRecName );
		free( pRecName );
		pRecName = NULL;
	}
	if (pRecType != NULL) {
		dsDataListDeallocate( dsRef, pRecType );
		free( pRecType );
		pRecType = NULL;
	}
	if (pAttrType != NULL) {
		dsDataListDeallocate( dsRef, pAttrType );
		free( pAttrType );
		pAttrType = NULL;
	}
	if (nodeRef != 0) {
		dsCloseDirNode(nodeRef);
		nodeRef = 0;
	}
	if (dsRef != 0) {
		dsCloseDirService(dsRef);
		dsRef = 0;
	}
	
	return result;
}
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 pCtx = NULL;
            dsErr = dsGetRecordList(pNodeRef,
                                    pTmpBuf,
                                    pRecordName,
                                    eDSExact,
                                    pRecordType,
                                    pRequestedAttributes,
                                    false,
                                    &cRecords,
                                    &pCtx);
            if (   dsErr == eDSNoErr
                && cRecords >= 1)
            {
                /* Process the first found record. Look at any attribute one by one. */
                tAttributeListRef pRecAttrListRef = NULL;
                tRecordEntryPtr pRecEntry = NULL;
                tDataListPtr pAuthNodeList = NULL;
                dsErr = dsGetRecordEntry(pNodeRef, pTmpBuf, 1, &pRecAttrListRef, &pRecEntry);
                if (dsErr == eDSNoErr)
                {
                    for (size_t i = 1; i <= pRecEntry->fRecordAttributeCount; ++i)
                    {
                        tAttributeValueListRef pAttrValueListRef = NULL;
                        tAttributeEntryPtr pAttrEntry = NULL;
                        /* Get the information for this attribute. */
                        dsErr = dsGetAttributeEntry(pNodeRef, pTmpBuf, pRecAttrListRef, i,
                                                    &pAttrValueListRef, &pAttrEntry);
                        if (dsErr == eDSNoErr)
                        {
                            tAttributeValueEntryPtr pValueEntry = NULL;
                            /* Has any value? */
                            if (pAttrEntry->fAttributeValueCount > 0)
                            {
                                dsErr = dsGetAttributeValue(pNodeRef, pTmpBuf, 1, pAttrValueListRef, &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 (pAttrValueListRef)
                                dsCloseAttributeValueList(pAttrValueListRef);
                            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 (pRecAttrListRef)
                    dsCloseAttributeList(pRecAttrListRef);
                if (pRecEntry != NULL)
                    dsDeallocRecordEntry(pDirRef, pRecEntry);
            }
            else
                dsErr = eDSRecordNotFound;
            if (pCtx)
                dsReleaseContinueData(pDirRef, pCtx);
        }
        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;
}
예제 #8
0
int ds_check_passwd(char *uname, char *domain)
{
	char 						*p					= NULL;
	tDirReference				dsRef				= 0;
    tDataBuffer				   *tDataBuff			= NULL;
    tDirNodeReference			nodeRef				= 0;
    long						status				= eDSNoErr;
    tContextData				context				= NULL;
	unsigned long				nodeCount			= 0;
	unsigned long				attrIndex			= 0;
	tDataList				   *nodeName			= NULL;
    tAttributeEntryPtr			pAttrEntry			= NULL;
	tDataList				   *pRecName			= NULL;
	tDataList				   *pRecType			= NULL;
	tDataList				   *pAttrType			= NULL;
	unsigned long				recCount			= 0;
	tRecordEntry		  	 	*pRecEntry			= NULL;
	tAttributeListRef			attrListRef			= 0;
	char					   *pUserLocation		= NULL;
	char					   *pUserName			= NULL;
	tAttributeValueListRef		valueRef			= 0;
	tAttributeValueEntry  	 	*pValueEntry		= NULL;
	tDataList				   *pUserNode			= NULL;
	tDirNodeReference			userNodeRef			= 0;
	tDataBuffer					*pStepBuff			= NULL;
	tDataNode				   *pAuthType			= NULL;
	unsigned long				uiCurr				= 0;
	unsigned long				uiLen				= 0;
	
	do
	{
		if (uname == NULL)
			SaySorryAndBail();
		
		printf("Checking password for %s.\n", uname);
		p = getpass("Password:"******"/" );
			if ( nodeName == NULL ) break;
			
			// find
			status = dsFindDirNodes( dsRef, tDataBuff, nodeName, eDSiExact, &nodeCount, &context );
		}
		else
		{
			// find on search node
			status = dsFindDirNodes( dsRef, tDataBuff, NULL, eDSSearchNodeName, &nodeCount, &context );
		}
		
		if ( status != eDSNoErr )
			SaySorryAndBail();
		
		if ( nodeCount < 1 )
			SaySorryAndBail();
		
		status = dsGetDirNodeName( dsRef, tDataBuff, 1, &nodeName );
		if (status != eDSNoErr)
			SaySorryAndBail();
		
		status = dsOpenDirNode( dsRef, nodeName, &nodeRef );
		dsDataListDeallocate( dsRef, nodeName );
		free( nodeName );
		nodeName = NULL;
		if (status != eDSNoErr)
			SaySorryAndBail();
		
		pRecName = dsBuildListFromStrings( dsRef, uname, NULL );
		pRecType = dsBuildListFromStrings( dsRef, kDSStdRecordTypeUsers, NULL );
		pAttrType = dsBuildListFromStrings( dsRef, kDSNAttrMetaNodeLocation, kDSNAttrRecordName, NULL );
	
		recCount = 1;
		status = dsGetRecordList( nodeRef, tDataBuff, pRecName, eDSExact, pRecType,
													pAttrType, 0, &recCount, &context );
		if ( status != eDSNoErr || recCount == 0 )
			SaySorryAndBail();
				
		status = dsGetRecordEntry( nodeRef, tDataBuff, 1, &attrListRef, &pRecEntry );
		if ( status != eDSNoErr )
			SaySorryAndBail();
		
		for ( attrIndex = 1; (attrIndex <= pRecEntry->fRecordAttributeCount) && (status == eDSNoErr); attrIndex++ )
		{
			status = dsGetAttributeEntry( nodeRef, tDataBuff, attrListRef, attrIndex, &valueRef, &pAttrEntry );
			if ( status == eDSNoErr && pAttrEntry != NULL )
			{
				if ( strcmp( pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrMetaNodeLocation ) == 0 )
				{
					status = dsGetAttributeValue( nodeRef, tDataBuff, 1, valueRef, &pValueEntry );
					if ( status == eDSNoErr && pValueEntry != NULL )
					{
						pUserLocation = (char *) calloc( pValueEntry->fAttributeValueData.fBufferLength + 1, sizeof(char) );
						memcpy( pUserLocation, pValueEntry->fAttributeValueData.fBufferData, pValueEntry->fAttributeValueData.fBufferLength );
					}
				}
				else
				if ( strcmp( pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrRecordName ) == 0 )
				{
					status = dsGetAttributeValue( nodeRef, tDataBuff, 1, valueRef, &pValueEntry );
					if ( status == eDSNoErr && pValueEntry != NULL )
					{
						pUserName = (char *) calloc( pValueEntry->fAttributeValueData.fBufferLength + 1, sizeof(char) );
						memcpy( pUserName, pValueEntry->fAttributeValueData.fBufferData, pValueEntry->fAttributeValueData.fBufferLength );
					}
				}
				
				if ( pValueEntry != NULL )
					dsDeallocAttributeValueEntry( dsRef, pValueEntry );
				pValueEntry = NULL;
				
				dsDeallocAttributeEntry( dsRef, pAttrEntry );
				pAttrEntry = NULL;
				dsCloseAttributeValueList( valueRef );
				valueRef = 0;
			}
		}
		
		pUserNode = dsBuildFromPath( dsRef, pUserLocation, "/" );
		status = dsOpenDirNode( dsRef, pUserNode, &userNodeRef );
		if ( status != eDSNoErr )
			SaySorryAndBail();
		
		pStepBuff = dsDataBufferAllocate( dsRef, 128 );
		
		pAuthType = dsDataNodeAllocateString( dsRef, kDSStdAuthNodeNativeClearTextOK );
		uiCurr = 0;
		
		// User name
		uiLen = strlen( pUserName );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), &uiLen, sizeof( unsigned long ) );
		uiCurr += sizeof( unsigned long );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), pUserName, uiLen );
		uiCurr += uiLen;
		
		// pw
		uiLen = strlen( p );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), &uiLen, sizeof( unsigned long ) );
		uiCurr += sizeof( unsigned long );
		memcpy( &(tDataBuff->fBufferData[ uiCurr ]), p, uiLen );
		uiCurr += uiLen;
		
		tDataBuff->fBufferLength = uiCurr;
		
		status = dsDoDirNodeAuth( userNodeRef, pAuthType, 1, tDataBuff, pStepBuff, NULL );
		
	}
	while ( 0 );
	
	// clean up
	if (tDataBuff != NULL) {
		memset(tDataBuff, 0, tDataBuff->fBufferSize);
		dsDataBufferDeAllocate( dsRef, tDataBuff );
		tDataBuff = NULL;
	}
	
	if (pStepBuff != NULL) {
		dsDataBufferDeAllocate( dsRef, pStepBuff );
		pStepBuff = NULL;
	}
	if (pUserLocation != NULL ) {
		free(pUserLocation);
		pUserLocation = NULL;
	}
	if (pRecName != NULL) {
		dsDataListDeallocate( dsRef, pRecName );
		free( pRecName );
		pRecName = NULL;
	}
	if (pRecType != NULL) {
		dsDataListDeallocate( dsRef, pRecType );
		free( pRecType );
		pRecType = NULL;
	}
	if (pAttrType != NULL) {
		dsDataListDeallocate( dsRef, pAttrType );
		free( pAttrType );
		pAttrType = NULL;
	}
	if (nodeRef != 0) {
		dsCloseDirNode(nodeRef);
		nodeRef = 0;
	}
	if (dsRef != 0) {
		dsCloseDirService(dsRef);
		dsRef = 0;
	}
	
	if ( status != eDSNoErr )
	{
		errno = EACCES;
		fprintf(stderr, "Sorry\n");
		exit(1);
	}
	
	return 0;
}
예제 #9
0
static int getUserNodeRef(char* inUserName, char **outUserName,
			  tDirNodeReference* userNodeRef, tDirReference dsRef)
{
	tDataBuffer             *tDataBuff	= NULL;
	tDirNodeReference       nodeRef		= 0;
	long                    status		= eDSNoErr;
	tContextData            context		= 0;
	uint32_t           	nodeCount	= 0;
	uint32_t                attrIndex	= 0;
	tDataList               *nodeName	= NULL;
	tAttributeEntryPtr      pAttrEntry	= NULL;
	tDataList               *pRecName	= NULL;
	tDataList               *pRecType	= NULL;
	tDataList               *pAttrType	= NULL;
	uint32_t           	recCount	= 0;
	tRecordEntry            *pRecEntry	= NULL;
	tAttributeListRef       attrListRef	= 0;
	char                    *pUserLocation	= NULL;
	tAttributeValueListRef  valueRef	= 0;
	tAttributeValueEntry    *pValueEntry	= NULL;
	tDataList               *pUserNode	= NULL;
	int                     result		= RLM_MODULE_FAIL;
	
	if (inUserName == NULL) {
		radlog(L_ERR, "rlm_mschap: getUserNodeRef(): no username");
		return RLM_MODULE_FAIL;
	}
    
	tDataBuff = dsDataBufferAllocate(dsRef, 4096);
	if (tDataBuff == NULL) {
		radlog(L_ERR, "rlm_mschap: getUserNodeRef(): dsDataBufferAllocate() status = %ld", status);  
		return RLM_MODULE_FAIL;
	}
	
	do {
		/* find on search node */
		status = dsFindDirNodes(dsRef, tDataBuff, NULL,
					eDSAuthenticationSearchNodeName,
					&nodeCount, &context);
		if (status != eDSNoErr) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): no node found? status = %ld", status);  
			result = RLM_MODULE_FAIL;
			break;
		}
		if (nodeCount < 1) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): nodeCount < 1, status = %ld", status);  
			result = RLM_MODULE_FAIL;
			break;
		}
		
		status = dsGetDirNodeName(dsRef, tDataBuff, 1, &nodeName);
		if (status != eDSNoErr) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): dsGetDirNodeName() status = %ld", status);  
			result = RLM_MODULE_FAIL;
			break;
		}
		
		status = dsOpenDirNode(dsRef, nodeName, &nodeRef);
		dsDataListDeallocate(dsRef, nodeName);
		free(nodeName);
		nodeName = NULL;
		
		if (status != eDSNoErr) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): dsOpenDirNode() status = %ld", status);  
			result = RLM_MODULE_FAIL;
			break;
		}
		
		pRecName = dsBuildListFromStrings(dsRef, inUserName, NULL);
		pRecType = dsBuildListFromStrings(dsRef, kDSStdRecordTypeUsers,
						  NULL);
		pAttrType = dsBuildListFromStrings(dsRef,
						   kDSNAttrMetaNodeLocation,
						   kDSNAttrRecordName, NULL);
		
		recCount = 1;
		status = dsGetRecordList(nodeRef, tDataBuff, pRecName,
					 eDSExact, pRecType, pAttrType, 0,
					 &recCount, &context);
		if (status != eDSNoErr || recCount == 0) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): dsGetRecordList() status = %ld, recCount=%u", status, recCount);
			result = RLM_MODULE_FAIL;
			break;
		}
		
		status = dsGetRecordEntry(nodeRef, tDataBuff, 1,
					  &attrListRef, &pRecEntry);
		if (status != eDSNoErr) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): dsGetRecordEntry() status = %ld", status);  
			result = RLM_MODULE_FAIL;
			break;	
		}
		
		for (attrIndex = 1; (attrIndex <= pRecEntry->fRecordAttributeCount) && (status == eDSNoErr); attrIndex++) {
			status = dsGetAttributeEntry(nodeRef, tDataBuff, attrListRef, attrIndex, &valueRef, &pAttrEntry);
			if (status == eDSNoErr && pAttrEntry != NULL) {
				if (strcmp(pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrMetaNodeLocation) == 0) {
					status = dsGetAttributeValue(nodeRef, tDataBuff, 1, valueRef, &pValueEntry);
					if (status == eDSNoErr && pValueEntry != NULL) {
						pUserLocation = (char *) calloc(pValueEntry->fAttributeValueData.fBufferLength + 1, sizeof(char));
						memcpy(pUserLocation, pValueEntry->fAttributeValueData.fBufferData, pValueEntry->fAttributeValueData.fBufferLength);
					}
				} else if (strcmp(pAttrEntry->fAttributeSignature.fBufferData, kDSNAttrRecordName) == 0) {
					status = dsGetAttributeValue(nodeRef, tDataBuff, 1, valueRef, &pValueEntry);
					if (status == eDSNoErr && pValueEntry != NULL) {
						*outUserName = (char *) malloc(pValueEntry->fAttributeValueData.fBufferLength + 1);
						bzero(*outUserName,pValueEntry->fAttributeValueData.fBufferLength + 1);
						memcpy(*outUserName, pValueEntry->fAttributeValueData.fBufferData, pValueEntry->fAttributeValueData.fBufferLength);
					}
				}
				
				if (pValueEntry != NULL) {
					dsDeallocAttributeValueEntry(dsRef, pValueEntry);
					pValueEntry = NULL;
				}
				
				dsDeallocAttributeEntry(dsRef, pAttrEntry);
				pAttrEntry = NULL;
				dsCloseAttributeValueList(valueRef);
				valueRef = 0;
			}
		}
		
		/* OpenDirectory doesn't support mschapv2 authentication against
		 * Active Directory.  AD users need to be authenticated using the
		 * normal freeradius AD path (i.e. ntlm_auth).
		 */
		if (strncmp(pUserLocation, kActiveDirLoc, strlen(kActiveDirLoc)) == 0) {
			DEBUG2("[mschap] OpenDirectory authentication returning noop.  OD doesn't support MSCHAPv2 for ActiveDirectory users.");
			result = RLM_MODULE_NOOP;
			break;
		}
        
		pUserNode = dsBuildFromPath(dsRef, pUserLocation, "/");
		if (pUserNode == NULL) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): dsBuildFromPath() returned NULL");  
			result = RLM_MODULE_FAIL;
			break;
		}
		
		status = dsOpenDirNode(dsRef, pUserNode, userNodeRef);
		dsDataListDeallocate(dsRef, pUserNode);
		free(pUserNode);

		if (status != eDSNoErr) {
			radlog(L_ERR,"rlm_mschap: getUserNodeRef(): dsOpenDirNode() status = %ld", status);  
			result = RLM_MODULE_FAIL;
			break;
		}
		
		result = RLM_MODULE_OK;
	}
	while (0);
	
	if (pRecEntry != NULL)
		dsDeallocRecordEntry(dsRef, pRecEntry);

	if (tDataBuff != NULL)
		dsDataBufferDeAllocate(dsRef, tDataBuff);
		
	if (pUserLocation != NULL)
		free(pUserLocation);
		
	if (pRecName != NULL) {
		dsDataListDeallocate(dsRef, pRecName);
		free(pRecName);
	}
	if (pRecType != NULL) {
		dsDataListDeallocate(dsRef, pRecType);
		free(pRecType);
	}
	if (pAttrType != NULL) {
		dsDataListDeallocate(dsRef, pAttrType);
		free(pAttrType);
	}
	if (nodeRef != 0)
		dsCloseDirNode(nodeRef);
	
	return  result;
}
예제 #10
0
tDirStatus
FindUsersAuthInfo(
    tDirReference       dirRef,
    tDirNodeReference   nodeRef,
    const char *        username,
    tDataListPtr *      pathListToAuthNodePtr
)
{
    tDirStatus          err;
    tDirStatus          junk;
    tDataBufferPtr      buf;
    tDataListPtr        recordType;
    tDataListPtr        recordName;
    tDataListPtr        requestedAttributes;
    unsigned long       recordCount;
    tAttributeListRef   foundRecAttrList;
    tContextData        context;
    tRecordEntryPtr     foundRecEntry;
    tDataListPtr        pathListToAuthNode;

    if (!( (dirRef != NULL) || (nodeRef != NULL) || (username != NULL) ||
            ( pathListToAuthNodePtr != NULL) || (*pathListToAuthNodePtr == NULL) ) )
        return(eDSBadParam);

    recordType = NULL;
    recordName = NULL;
    requestedAttributes = NULL;
    foundRecAttrList = NULL;
    context = NULL;
    foundRecEntry = NULL;
    pathListToAuthNode = NULL;

    /*
    ** Allocate a buffer for the record results.  We'll grow this
    ** buffer if it proves to be too small.
    */

    err = eDSNoErr;
    buf = dsDataBufferAllocate(dirRef, kDefaultDSBufferSize);
    if (buf == NULL)
        err = eDSAllocationFailed;

    /*
    ** Create the information needed for the search.  We're searching for
    ** a record of type kDSStdRecordTypeUsers whose name is "username".
    ** We want to get back the kDSNAttrMetaNodeLocation and kDSNAttrRecordName
    ** attributes.
    */

    if (err == eDSNoErr)
    {
        recordType = dsBuildListFromStrings(dirRef, kDSStdRecordTypeUsers, NULL);
        recordName = dsBuildListFromStrings(dirRef, username, NULL);
        requestedAttributes = dsBuildListFromStrings(dirRef,
                              kDSNAttrMetaNodeLocation, kDSNAttrRecordName, NULL);

        if ( (recordType == NULL) || (recordName == NULL) ||
                (requestedAttributes == NULL) )
            err = eDSAllocationFailed;
    }

    /* Search for a matching record. */

    if (err == eDSNoErr) {
        recordCount = 1;            /* we only want one match (the first) */

        err = dsGetRecordListQ(
                  dirRef,
                  nodeRef,
                  &buf,
                  recordName,
                  eDSExact,
                  recordType,
                  requestedAttributes,
                  false,
                  &recordCount,
                  &context
              );
    }

    if ( (err == eDSNoErr) && (recordCount < 1) )
        err = eDSRecordNotFound;

    /*
    ** Get the first record from the search.  Then enumerate the attributes for
    ** that record.  For each attribute, extract the first value (remember that
    ** attributes can by multi-value).  Then see if the attribute is one that
    ** we care about.  If it is, remember the value for later processing.
    */
    if (err == eDSNoErr)
        err = dsGetRecordEntry(nodeRef, buf, 1, &foundRecAttrList,
                               &foundRecEntry);

    if (err == eDSNoErr)
    {
        unsigned long attrIndex;

        /* Iterate over the attributes. */

        for (attrIndex = 1;
                attrIndex <= foundRecEntry->fRecordAttributeCount;
                attrIndex++)
        {
            tAttributeValueListRef  thisValue;
            tAttributeEntryPtr      thisAttrEntry;
            tAttributeValueEntryPtr thisValueEntry;
            const char *            thisAttrName;

            thisValue = NULL;
            thisAttrEntry = NULL;
            thisValueEntry = NULL;

            /* Get the information for this attribute. */

            err = dsGetAttributeEntry(nodeRef, buf, foundRecAttrList, attrIndex,
                                      &thisValue, &thisAttrEntry);

            if (err == eDSNoErr)
            {
                thisAttrName = thisAttrEntry->fAttributeSignature.fBufferData;

                /* We only care about attributes that have values. */

                if (thisAttrEntry->fAttributeValueCount > 0)
                {
                    /*
                    ** Get the first value for this attribute.  This is common
                    ** code for the two potential attribute values listed below,
                    ** so we do it first.
                    */

                    err = dsGetAttributeValue(nodeRef, buf, 1, thisValue,
                                              &thisValueEntry);

                    if (err == eDSNoErr)
                    {
                        const char *    thisValueDataPtr;
                        unsigned long   thisValueDataLen;

                        thisValueDataPtr = thisValueEntry->fAttributeValueData.fBufferData;
                        thisValueDataLen = thisValueEntry->fAttributeValueData.fBufferLength;

                        /*
                                    ** Handle each of the two attributes we care about;
                        ** ignore any others.
                        */

                        if ( STcompare(thisAttrName,
                                       kDSNAttrMetaNodeLocation) == 0 )
                        {

                            /*
                                        ** This is the kDSNAttrMetaNodeLocation attribute,
                            ** which contains a path to the node used for
                            ** authenticating this record; convert its value
                            ** into a path list.
                            */

                            pathListToAuthNode = dsBuildFromPath(
                                                     dirRef,
                                                     thisValueDataPtr,
                                                     "/"
                                                 );
                            if (pathListToAuthNode == NULL)
                                err = eDSAllocationFailed;

                        }
                    }
                    else
                    {
                        fprintf(stderr, "FindUsersAuthInfo: Unexpected no-value attribute '%s'.", thisAttrName);
                    }
                }

                /* Clean up. */

                if (thisValueEntry != NULL)
                    dsDeallocAttributeValueEntry(dirRef, thisValueEntry);
                if (thisValue != NULL)
                    dsCloseAttributeValueList(thisValue);
                if (thisAttrEntry != NULL)
                    dsDeallocAttributeEntry(dirRef, thisAttrEntry);

                if (err != eDSNoErr)
                    break;
            }
        } /* Check attr loop */
    }

    /* Copy results out to caller. */

    if (err == eDSNoErr)
    {
        if (pathListToAuthNode != NULL)
        {
            /* Copy out results. */

            *pathListToAuthNodePtr = pathListToAuthNode;

            /* NULL out locals so that we don't dispose them. */

            pathListToAuthNode = NULL;
        }
        else
            err = eDSAttributeNotFound;
    }

    /* Clean up. */

    if (pathListToAuthNode != NULL)
        dsDataListAndHeaderDeallocate(dirRef, pathListToAuthNode);
    if (foundRecAttrList != NULL)
        dsCloseAttributeList(foundRecAttrList);
    if (context != NULL)
        dsReleaseContinueData(dirRef, context);
    if (foundRecAttrList != NULL)
        dsDeallocRecordEntry(dirRef, foundRecEntry);
    if (requestedAttributes != NULL)
        dsDataListAndHeaderDeallocate(dirRef, requestedAttributes);
    if (recordName != NULL)
        dsDataListAndHeaderDeallocate(dirRef, recordName);
    if (recordType != NULL)
        dsDataListAndHeaderDeallocate(dirRef, recordType);
    if (buf != NULL)
        dsDataBufferDeAllocate(dirRef, buf);

    return err;
}