Source code of Windows XP (NT5)
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/*
Copyright (c) 1992 Microsoft Corporation
Module Name:
sda.h
Abstract:
This module contains session data area and related data structures.
Author:
Jameel Hyder (microsoft!jameelh)
Revision History:
25 Apr 1992 Initial Version
Notes: Tab stop: 4
--*/
#ifndef _SDA_
#define _SDA_
// sda_Flags values
#define SDA_USER_NOT_LOGGEDIN 0x0000 //
#define SDA_USER_LOGIN_PARTIAL 0x0001 // Encrypted logon is half-way done
#define SDA_USER_LOGGEDIN 0x0002
#define SDA_LOGIN_MASK 0x0003
#define SDA_REQUEST_IN_PROCESS 0x0004 // A request is being processed
#define SDA_REPLY_IN_PROCESS 0x0008 // A reply has been posted
#define SDA_NAMEXSPACE_IN_USE 0x0010 // NameXSpace is in use by reply processing
#define SDA_DEREF_VOLUME 0x0020 // Dereference volume before reply
#define SDA_DEREF_OFORK 0x0040 // Dereference open-fork before reply
#define SDA_LOGIN_FAILED 0x0080 // Funky stuff for AFP 2.1 Chooser
#define SDA_CLIENT_CLOSE 0x0100 // Set if the close if hapenning from the client side
#define SDA_QUEUE_IF_DPC 0x0200 // Copied from the dispatch table (see afpapi.c)
#define SDA_SESSION_CLOSED 0x0400 // If set, do not close session in deref.
#define SDA_SESSION_CLOSE_COMP 0x0800 // If set, close completion called for this session
#define SDA_SESSION_OVER_TCP 0x1000 // this is an AFP/TCP session
#define SDA_SESSION_NOTIFY_SENT 0x2000 // Server Notification sent to this sda
#define SDA_CLOSING 0x8000 // Session is marked to die
// sda_ClientType values
#define SDA_CLIENT_GUEST NO_USER_AUTHENT
#define SDA_CLIENT_CLEARTEXT CLEAR_TEXT_AUTHENT
#define SDA_CLIENT_MSUAM_V1 CUSTOM_UAM_V1
#define SDA_CLIENT_MSUAM_V2 CUSTOM_UAM_V2
#define SDA_CLIENT_RANDNUM RANDNUM_EXCHANGE
#define SDA_CLIENT_TWOWAY TWOWAY_EXCHANGE
#define SDA_CLIENT_ADMIN AFP_NUM_UAMS
#define MAX_REQ_ENTRIES 7
#define MAX_REQ_ENTRIES_PLUS_1 8 // used to allocate space 1 DWORD more
// than required. The first entry is
// used to store pointer to VolDesc
// or ConnDesc. The extra DWORD is used
// to accomodate 64-bit pointer if we
// have one
#define MAX_VAR_ENTRIES 3
#define SESSION_CHECK_TIME 60 // In seconds
#define SESSION_WARN_TIME SESSION_CHECK_TIME * 10
// SDA_SIZE is the total size allocated to the SDA pointer
// This includes sizeof(SDA) plus additional buffer allocated for
// copying strings into. This extra space is allocated after the
// first sizeof(SDA) bytes. The size is purely a ball-park figure
// The original design does not mention why the total space was 384
// Currently we are doubling the space to accomodate 64-bit stuff
#ifdef _WIN64
#define SDA_SIZE (((768 - POOL_OVERHEAD)+7) & 0xfffffff8)
#else
#define SDA_SIZE (((450 - POOL_OVERHEAD)+7) & 0xfffffff8)
#endif
// Linked list of deferred request packets. If the session is already
// processing a request, then subsequent requests are queued. These
// are always handled in a FIFO order.
typedef struct _DeferredRequestQueue
{
LIST_ENTRY drq_Link;
PREQUEST drq_pRequest;
} DFRDREQQ, *PDFRDREQQ;
/*
* This is the per-session data area. This is allocated whenever a listen is
* posted. At that point it is in the outstanding session list. When the listen
* is completed, it moves to the active session list.
*/
#if DBG
#define SDA_SIGNATURE *(DWORD *)"SDA"
#define VALID_SDA(pSda) (((pSda) != NULL) && \
((pSda)->Signature == SDA_SIGNATURE))
#else
#define VALID_SDA(pSda) ((pSda) != NULL)
#endif
typedef struct _SessDataArea
{
#if DBG
DWORD Signature;
#endif
struct _SessDataArea * sda_Next; // link to next session in session list
AFP_SPIN_LOCK sda_Lock; // Lock for manipulating certain SDA
// fields
DWORD sda_Flags; // Bit mask of the SDA states
LONG sda_RefCount; // Count of references to this SDA
PASP_XPORT_ENTRIES sda_XportTable; // pointer to ASP's or DSI's entry points
DWORD sda_MaxWriteSize; // 64000 for TCP/IP, 4624 for Appletalk
PVOID sda_SessHandle; // Asp Session handle
PREQUEST sda_Request; // Current request
HANDLE sda_UserToken; // Logon token for this user.
PSID sda_UserSid; // SID representing owner
PSID sda_GroupSid; // SID representing primary group
PTOKEN_GROUPS sda_pGroups; // List of groups this user is member of
#ifdef INHERIT_DIRECTORY_PERMS
DWORD sda_UID; // User Id corres. to sda_UserSid
DWORD sda_GID; // Group Id corres. to sda_GroupSid
#else
PISECURITY_DESCRIPTOR sda_pSecDesc; // Security descriptor used by directory
// Creation API
DWORD sda_Dummy; // For alignment
#endif
PANSI_STRING sda_Message; // The actual message in macintosh ansi
// The above field is used only for
// client specific message. Broadcast
// messages are stored in a global area
UNICODE_STRING sda_WSName; // Workstation name of logged in user
UNICODE_STRING sda_UserName; // User name
UNICODE_STRING sda_DomainName; // DomainName for Login/ChgPwd
#ifdef PROFILING
TIME sda_ApiStartTime; // Time stamp when Api req. was recvd.
TIME sda_QueueTime; // Time spent waiting for worker thread
#endif
DWORD sda_SessionId; // Session Id for use by admin APIs
AFPTIME sda_TimeLoggedOn; // Time when session established
// in macintosh time
DWORD sda_tTillKickOff; // # of seconds before this session will
// be kicked off
struct _ConnDesc * sda_pConnDesc; // List of connections by this session
struct _OpenForkSession sda_OpenForkSess;
// List of open files by this session
LONG sda_cOpenVolumes; // Number of volumes mounted (admin api)
LONG sda_cOpenForks; // Number of forks opened (admin api)
DWORD sda_MaxOForkRefNum; // High-water mark of the fork-ref num assigned
BYTE sda_AfpFunc; // AFP API in execution for FSP
BYTE sda_AfpSubFunc; // Sub function code used by some APIs
BYTE sda_ClientVersion; // AFP Version of the client s/w
// AFP_VER_20
// AFP_VER_21
BYTE sda_ClientType; // One of SDA_CLIENT_XXXX
BYTE sda_PathType; // For all path based calls
USHORT sda_SizeNameXSpace; // Constant, initialized once
USHORT sda_ReplySize; // Size of the reply buffer
#define sda_ReadStatus sda_SecUtilResult
NTSTATUS sda_SecUtilResult; // Result of scurity utitility call
PSID sda_SecUtilSid; // Name to Sid translation. Should be
// freed if non-null.
// The incoming packet is copied here. The parameters from the RequestBuf
// are un-marshalled into this. Each API structures this differently. Make
// sure sda_Name and sda_ReqBlock are together and next to each other AND
// in this order. The code in afpapi.c depends on this while clearing this.
// The extra DWORD is used in cases where the first entry is reused to
// stored pointer values. On 64-bit architecture we require 2 DWORD at
// the start of the ReqBlock.
DWORD sda_ReqBlock[MAX_REQ_ENTRIES_PLUS_1];
ANSI_STRING sda_Name[MAX_VAR_ENTRIES];
#define sda_Name1 sda_Name[0]
#define sda_Name2 sda_Name[1]
#define sda_Name3 sda_Name[2]
#define sda_IOBuf sda_ReplyBuf
#define sda_IOSize sda_ReplySize
PBYTE sda_ReplyBuf; // Reply Buffer (variable size)
AFPAPIWORKER sda_WorkerRoutine; // Api Worker
WORK_ITEM sda_WorkItem; // For queueing up to worker threads
PBYTE sda_Challenge; // Challenge from MSV1_0
LIST_ENTRY sda_DeferredQueue; // Queue of deferred requests
PBYTE sda_NameBuf; // Space is allocated for variable
// part of request buffer here.
PBYTE sda_NameXSpace;
} SDA, *PSDA;
GLOBAL AFP_SPIN_LOCK AfpSdaLock EQU {0};// Lock for session list
GLOBAL PSDA AfpSessionList EQU NULL;
// Linked-List of sessions
// These values are subject to tuning.
GLOBAL LONG AfpNumSessions EQU 0;
GLOBAL UNICODE_STRING AfpDefaultWksta EQU {0, 0, NULL};
extern
NTSTATUS
AfpSdaInit(
VOID
);
extern
VOID
AfpSdaDeInit(
VOID
);
extern
PSDA FASTCALL
AfpSdaCreateNewSession(
IN PVOID SessionHandle,
IN BOOLEAN fOverTcp
);
extern
VOID FASTCALL
afpQueueDeferredRequest(
IN PSDA pSda,
IN PREQUEST pRequest
);
extern
PSDA FASTCALL
AfpSdaReferenceSessionById(
IN DWORD SessId
);
extern
PSDA FASTCALL
AfpSdaReferenceSessionByPointer(
IN PSDA pSda
);
extern
VOID FASTCALL
AfpSdaDereferenceSession(
IN PSDA pSda
);
extern
AFPSTATUS FASTCALL
AfpSdaCloseSession(
IN PSDA pSda
);
extern
AFPSTATUS
AfpAdmWSessionClose(
IN OUT PVOID Inbuf OPTIONAL,
IN LONG OutBufLen OPTIONAL,
OUT PVOID Outbuf OPTIONAL
);
extern
AFPSTATUS FASTCALL
AfpSdaCheckSession(
IN PVOID pContext
);
extern
VOID FASTCALL
AfpKillSessionsOverProtocol(
IN BOOLEAN fAppletalkSessions
);
extern
VOID FASTCALL
afpUpdateDiskQuotaInfo(
IN struct _ConnDesc * pConnDesc
);
#ifdef _SDA_LOCALS
LOCAL DWORD afpNextSessionId = 1;
LOCAL AFPSTATUS FASTCALL
afpCloseSessionAndFreeSda(
IN PSDA pSda
);
#endif // _SDA_LOCALS
#endif // _SDA_