672 lines
9.3 KiB
C
672 lines
9.3 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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AtkUtils.c
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Abstract:
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This module contains miscellaneous support routines
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Author:
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Jameel Hyder (jameelh@microsoft.com)
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Nikhil Kamkolkar (nikhilk@microsoft.com)
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Revision History:
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25 Feb 1993 Initial Version
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Notes: Tab stop: 4
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--*/
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#include <atalk.h>
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#pragma hdrstop
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#define FILENUM ATKUTILS
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#define ONE_MS_IN_100ns -10000L // 1ms in 100ns units
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extern BYTE AtalkUpCaseTable[256];
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VOID
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AtalkUpCase(
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IN PBYTE pSrc,
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IN BYTE SrcLen,
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OUT PBYTE pDst
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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while (SrcLen --)
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{
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*pDst++ = AtalkUpCaseTable[*pSrc++];
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}
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}
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BOOLEAN
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AtalkCompareCaseInsensitive(
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IN PBYTE s1,
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IN PBYTE s2
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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BYTE c1, c2;
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while (((c1 = *s1++) != 0) && ((c2 = *s2++) != 0))
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{
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if (AtalkUpCaseTable[c1] != AtalkUpCaseTable[c2])
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return(FALSE);
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}
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return (c2 == 0);
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}
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int
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AtalkOrderCaseInsensitive(
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IN PBYTE s1,
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IN PBYTE s2
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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BYTE c1, c2;
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while (((c1 = *s1++) != 0) && ((c2 = *s2++) != 0))
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{
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c1 = AtalkUpCaseTable[c1];
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c2 = AtalkUpCaseTable[c2];
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if (c1 != c2)
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return (c1 - c2);
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}
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if (c2 == 0)
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return 0;
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return (-1);
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}
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BOOLEAN
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AtalkCompareFixedCaseInsensitive(
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IN PBYTE s1,
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IN PBYTE s2,
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IN int len
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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while(len--)
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{
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if (AtalkUpCaseTable[*s1++] != AtalkUpCaseTable[*s2++])
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return(FALSE);
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}
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return(TRUE);
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}
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PBYTE
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AtalkSearchBuf(
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IN PBYTE pBuf,
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IN BYTE BufLen,
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IN BYTE SearchChar
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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for (NOTHING;
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(BufLen != 0);
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BufLen--, pBuf++)
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{
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if (*pBuf == SearchChar)
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{
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break;
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}
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}
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return ((BufLen == 0) ? NULL : pBuf);
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}
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int
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GetTokenLen(
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IN PBYTE pTokStr,
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IN int WildStringLen,
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IN BYTE SearchChar
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)
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/*++
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Routine Description:
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Find the substring between start of the given string and the first
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wildchar after that, and return the length of the substring
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--*/
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{
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int len;
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len = 0;
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while (len < WildStringLen)
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{
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if (pTokStr[len] == SearchChar)
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{
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break;
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}
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len++;
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}
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return (len);
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}
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BOOLEAN
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SubStringMatch(
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IN PBYTE pTarget,
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IN PBYTE pTokStr,
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IN int StringLen,
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IN int TokStrLen
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)
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/*++
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Routine Description:
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Search pTarget string to see if the substring pTokStr can be
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found in it.
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--*/
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{
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int i;
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if (TokStrLen > StringLen)
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{
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return (FALSE);
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}
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// if the pTarget string is "FooBarString" and if the substring is
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// BarStr
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for (i=(StringLen-TokStrLen); i>=0; i--)
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{
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if ( AtalkFixedCompareCaseInsensitive( pTarget+i,
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TokStrLen,
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pTokStr,
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TokStrLen) )
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{
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return( TRUE );
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}
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}
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return (FALSE);
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}
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BOOLEAN
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AtalkCheckNetworkRange(
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IN PATALK_NETWORKRANGE Range
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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if ((Range->anr_FirstNetwork < FIRST_VALID_NETWORK) ||
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(Range->anr_FirstNetwork > LAST_VALID_NETWORK) ||
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(Range->anr_LastNetwork < FIRST_VALID_NETWORK) ||
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(Range->anr_LastNetwork > LAST_VALID_NETWORK) ||
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(Range->anr_LastNetwork < Range->anr_FirstNetwork) ||
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(Range->anr_FirstNetwork >= FIRST_STARTUP_NETWORK))
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{
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return(FALSE);
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}
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return(TRUE);
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}
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BOOLEAN
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AtalkIsPrime(
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long Step
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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// We assume "step" is odd.
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long i, j;
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// All odds, seven and below, are prime.
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if (Step <= 7)
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return (TRUE);
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// Do a little divisibility checking. The "/3" is a reasonably good
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// shot at sqrt() because the smallest odd to come through here will be
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// 9.
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j = Step/3;
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for (i = 3; i <= j; i++)
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if (Step % i == 0)
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return(FALSE);
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return(TRUE);
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}
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LONG
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AtalkRandomNumber(
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VOID
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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LARGE_INTEGER Li;
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static LONG seed = 0;
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// Return a positive pseudo-random number; simple linear congruential
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// algorithm. ANSI C "rand()" function.
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if (seed == 0)
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{
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KeQuerySystemTime(&Li);
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seed = Li.LowPart;
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}
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seed *= (0x41C64E6D + 0x3039);
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return (seed & 0x7FFFFFFF);
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}
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BOOLEAN
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AtalkWaitTE(
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IN PKEVENT pEvent,
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IN ULONG TimeInMs
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)
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/*++
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Routine Description:
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Wait for an event to get signalled or a time to elapse
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Arguments:
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Return Value:
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--*/
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{
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TIME Time;
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NTSTATUS Status;
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// Make sure we can indeed wait
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ASSERT (KeGetCurrentIrql() == LOW_LEVEL);
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// Initialize the event
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KeInitializeEvent(pEvent, NotificationEvent, FALSE);
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Time.QuadPart = Int32x32To64((LONG)TimeInMs, ONE_MS_IN_100ns);
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Status = KeWaitForSingleObject(pEvent, Executive, KernelMode, FALSE, &Time);
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return (Status != STATUS_TIMEOUT);
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}
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VOID
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AtalkSleep(
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IN ULONG TimeInMs
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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KTIMER SleepTimer;
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LARGE_INTEGER TimerValue;
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ASSERT (KeGetCurrentIrql() == LOW_LEVEL);
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KeInitializeTimer(&SleepTimer);
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TimerValue.QuadPart = Int32x32To64(TimeInMs, ONE_MS_IN_100ns);
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KeSetTimer(&SleepTimer,
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TimerValue,
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NULL);
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KeWaitForSingleObject(&SleepTimer, UserRequest, KernelMode, FALSE, NULL);
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}
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NTSTATUS
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AtalkGetProtocolSocketType(
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PATALK_DEV_CTX Context,
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PUNICODE_STRING RemainingFileName,
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PBYTE ProtocolType,
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PBYTE SocketType
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
|
|||
|
|
NTSTATUS status = STATUS_SUCCESS;
|
|||
|
|
ULONG protocolType;
|
|||
|
|
UNICODE_STRING typeString;
|
|||
|
|
|
|||
|
|
*ProtocolType = PROTOCOL_TYPE_UNDEFINED;
|
|||
|
|
*SocketType = SOCKET_TYPE_UNDEFINED;
|
|||
|
|
|
|||
|
|
switch (Context->adc_DevType)
|
|||
|
|
{
|
|||
|
|
case ATALK_DEV_DDP :
|
|||
|
|
|
|||
|
|
if ((UINT)RemainingFileName->Length <= (sizeof(PROTOCOLTYPE_PREFIX) - sizeof(WCHAR)))
|
|||
|
|
{
|
|||
|
|
status = STATUS_NO_SUCH_DEVICE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
RtlInitUnicodeString(&typeString,
|
|||
|
|
(PWCHAR)((PCHAR)RemainingFileName->Buffer +
|
|||
|
|
sizeof(PROTOCOLTYPE_PREFIX) - sizeof(WCHAR)));
|
|||
|
|
|
|||
|
|
status = RtlUnicodeStringToInteger(&typeString,
|
|||
|
|
DECIMAL_BASE,
|
|||
|
|
&protocolType);
|
|||
|
|
|
|||
|
|
if (NT_SUCCESS(status))
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
DBGPRINT(DBG_COMP_CREATE, DBG_LEVEL_INFO,
|
|||
|
|
("AtalkGetProtocolType: protocol type is %lx\n", protocolType));
|
|||
|
|
|
|||
|
|
if ((protocolType > DDPPROTO_DDP) && (protocolType <= DDPPROTO_MAX))
|
|||
|
|
{
|
|||
|
|
*ProtocolType = (BYTE)protocolType;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
status = STATUS_NO_SUCH_DEVICE;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
break;
|
|||
|
|
|
|||
|
|
case ATALK_DEV_ADSP :
|
|||
|
|
|
|||
|
|
// Check for the socket type
|
|||
|
|
if (RemainingFileName->Length == 0)
|
|||
|
|
{
|
|||
|
|
*SocketType = SOCKET_TYPE_RDM;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ((UINT)RemainingFileName->Length != (sizeof(SOCKETSTREAM_SUFFIX) - sizeof(WCHAR)))
|
|||
|
|
{
|
|||
|
|
status = STATUS_NO_SUCH_DEVICE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
RtlInitUnicodeString(&typeString, SOCKETSTREAM_SUFFIX);
|
|||
|
|
|
|||
|
|
// Case insensitive compare
|
|||
|
|
if (RtlEqualUnicodeString(&typeString, RemainingFileName, TRUE))
|
|||
|
|
{
|
|||
|
|
*SocketType = SOCKET_TYPE_STREAM;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
status = STATUS_NO_SUCH_DEVICE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
case ATALK_DEV_ASPC:
|
|||
|
|
case ATALK_DEV_ASP :
|
|||
|
|
case ATALK_DEV_PAP :
|
|||
|
|
break;
|
|||
|
|
|
|||
|
|
default:
|
|||
|
|
status = STATUS_NO_SUCH_DEVICE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return(status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
INT
|
|||
|
|
AtalkIrpGetEaCreateType(
|
|||
|
|
IN PIRP Irp
|
|||
|
|
)
|
|||
|
|
/*++
|
|||
|
|
|
|||
|
|
Routine Description:
|
|||
|
|
|
|||
|
|
Checks the EA name and returns the appropriate open type.
|
|||
|
|
|
|||
|
|
Arguments:
|
|||
|
|
|
|||
|
|
Irp - the irp for the create request, the EA value is stored in the
|
|||
|
|
SystemBuffer
|
|||
|
|
|
|||
|
|
Return Value:
|
|||
|
|
|
|||
|
|
TDI_TRANSPORT_ADDRESS_FILE: Create irp was for a transport address
|
|||
|
|
TDI_CONNECTION_FILE: Create irp was for a connection object
|
|||
|
|
ATALK_FILE_TYPE_CONTROL: Create irp was for a control channel (ea = NULL)
|
|||
|
|
|
|||
|
|
--*/
|
|||
|
|
{
|
|||
|
|
PFILE_FULL_EA_INFORMATION openType;
|
|||
|
|
BOOLEAN found;
|
|||
|
|
INT returnType=0; // not a valid type
|
|||
|
|
USHORT i;
|
|||
|
|
|
|||
|
|
openType = (PFILE_FULL_EA_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
|
|||
|
|
|
|||
|
|
if (openType != NULL)
|
|||
|
|
{
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
found = TRUE;
|
|||
|
|
|
|||
|
|
for (i=0;
|
|||
|
|
(i<(USHORT)openType->EaNameLength) && (i < sizeof(TdiTransportAddress));
|
|||
|
|
i++)
|
|||
|
|
{
|
|||
|
|
if (openType->EaName[i] == TdiTransportAddress[i])
|
|||
|
|
{
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
found = FALSE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (found)
|
|||
|
|
{
|
|||
|
|
returnType = TDI_TRANSPORT_ADDRESS_FILE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Is this a connection object?
|
|||
|
|
//
|
|||
|
|
|
|||
|
|
found = TRUE;
|
|||
|
|
|
|||
|
|
for (i=0;
|
|||
|
|
(i<(USHORT)openType->EaNameLength) && (i < sizeof(TdiConnectionContext));
|
|||
|
|
i++)
|
|||
|
|
{
|
|||
|
|
if (openType->EaName[i] == TdiConnectionContext[i])
|
|||
|
|
{
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
found = FALSE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (found)
|
|||
|
|
{
|
|||
|
|
returnType = TDI_CONNECTION_FILE;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
} while ( FALSE );
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
returnType = TDI_CONTROL_CHANNEL_FILE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return(returnType);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#if DBG
|
|||
|
|
VOID
|
|||
|
|
AtalkDbgIncCount(
|
|||
|
|
IN DWORD *Value
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
KIRQL OldIrql;
|
|||
|
|
|
|||
|
|
ACQUIRE_SPIN_LOCK(&AtalkDebugSpinLock, &OldIrql);
|
|||
|
|
(*Value)++;
|
|||
|
|
RELEASE_SPIN_LOCK(&AtalkDebugSpinLock, OldIrql);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
AtalkDbgDecCount(
|
|||
|
|
IN DWORD *Value
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
KIRQL OldIrql;
|
|||
|
|
|
|||
|
|
ACQUIRE_SPIN_LOCK(&AtalkDebugSpinLock, &OldIrql);
|
|||
|
|
ASSERT((*Value) > 0);
|
|||
|
|
(*Value)--;
|
|||
|
|
RELEASE_SPIN_LOCK(&AtalkDebugSpinLock, OldIrql);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
|