Source code of Windows XP (NT5)
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#ifndef __DEFS_H__
#define __DEFS_H__
#define IP_ADDRESS_LEN 4
//
// Since the query types map to MIB_ACTION_XXX we can just pass the action Id onto
// the Locator functions
//
#define GET_FIRST MIB_ACTION_GETFIRST
#define GET_EXACT MIB_ACTION_GET
#define GET_NEXT MIB_ACTION_GETNEXT
#define SetAsnInteger(dstBuf,val){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_INTEGER); \
(dstBuf)->asnValue.number = (AsnInteger)(val); \
} \
}
#define ForceSetAsnInteger(dstBuf,val){ \
(dstBuf)->asnType = ASN_INTEGER; \
(dstBuf)->asnValue.number = (AsnInteger)(val); \
}
#define SetAsnCounter(dstBuf,val){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_RFC1155_COUNTER); \
(dstBuf)->asnValue.counter = (AsnCounter)(val); \
} \
}
#define SetAsnGauge(dstBuf,val){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_RFC1155_GAUGE); \
(dstBuf)->asnValue.gauge = (AsnGauge)(val); \
} \
}
#define SetAsnTimeTicks(dstBuf,val){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_RFC1155_TIMETICKS); \
(dstBuf)->asnValue.ticks = (AsnTimeticks)(val); \
} \
}
#define SetAsnOctetString(dstBuf,buffer,src,len){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_OCTETSTRING); \
if ((dstBuf)->asnValue.string.dynamic) \
{ \
SnmpUtilMemFree((dstBuf)->asnValue.string.stream); \
} \
(dstBuf)->asnValue.string.length = len; \
(dstBuf)->asnValue.string.stream = (BYTE*)memcpy(buffer,src,len);\
(dstBuf)->asnValue.string.dynamic = FALSE; \
} \
}
#define ForceSetAsnOctetString(dstBuf,buffer,src,len){ \
(dstBuf)->asnType = ASN_OCTETSTRING; \
if ((dstBuf)->asnValue.string.dynamic) \
{ \
SnmpUtilMemFree((dstBuf)->asnValue.string.stream); \
} \
(dstBuf)->asnValue.string.length = len; \
(dstBuf)->asnValue.string.stream = (BYTE*)memcpy(buffer,src,len);\
(dstBuf)->asnValue.string.dynamic = FALSE; \
}
#define SetAsnIPAddress(dstBuf,buffer,val){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_RFC1155_IPADDRESS); \
(dstBuf)->asnValue.address.length = IP_ADDRESS_LEN; \
if(!(dstBuf)->asnValue.address.stream) \
{ \
(dstBuf)->asnValue.address.stream = (PBYTE)buffer; \
(dstBuf)->asnValue.address.dynamic = FALSE; \
} \
(*(DWORD*)((dstBuf)->asnValue.address.stream)) = val; \
} \
}
#define ForceSetAsnIPAddress(dstBuf,buffer,val){ \
(dstBuf)->asnType = ASN_RFC1155_IPADDRESS; \
(dstBuf)->asnValue.address.length = IP_ADDRESS_LEN; \
if(!((dstBuf)->asnValue.address.stream)) \
{ \
(dstBuf)->asnValue.address.stream = (PBYTE)buffer; \
(dstBuf)->asnValue.address.dynamic = FALSE; \
} \
(*(DWORD*)((dstBuf)->asnValue.address.stream)) = val; \
}
#define SetAsnUshort(dstBuf,buffer,val){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_OCTETSTRING); \
(dstBuf)->asnValue.string.length = 2; \
(buffer)[0] = (BYTE)(val&0xFF); \
(buffer)[1] = (BYTE)((val>>8)&0xFF); \
(dstBuf)->asnValue.string.stream = (BYTE *)buffer; \
(dstBuf)->asnValue.string.dynamic = FALSE; \
} \
}
#define SetAsnDispString(dstBuf,buffer,src,len){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_RFC1213_DISPSTRING); \
(dstBuf)->asnValue.string.length = strlen(src); \
if ((dstBuf)->asnValue.string.length>len) \
{ \
(dstBuf)->asnValue.string.length = len; \
(dstBuf)->asnValue.string.stream = (BYTE *)strncpy (buffer,src,\
(dstBuf)->asnValue.string.length);\
(dstBuf)->asnValue.string.dynamic = FALSE; \
} \
} \
}
#define SetToZeroOid(dstBuf){ \
if ((dstBuf)->asnType) \
{ \
ASSERT((dstBuf)->asnType==ASN_OBJECTIDENTIFIER); \
(dstBuf)->asnValue.object.idLength = NULL_OID_LEN; \
(dstBuf)->asnValue.object.ids = \
SnmpUtilMemAlloc(NULL_OID_LEN * sizeof(UINT)); \
} \
}
#define GetAsnInteger(srcBuf,defVal) \
(((srcBuf)->asnType)? ((srcBuf)->asnValue.number):(defVal))
#define GetAsnCounter(srcBuf,defVal) \
(((srcBuf)->asnType)? ((srcBuf)->asnValue.counter):(defVal))
#define GetAsnOctetString(dst,srcBuf) \
(((srcBuf)->asnType)? \
(memcpy(dst,(srcBuf)->asnValue.string.stream,(srcBuf)->asnValue.string.length)) \
:NULL)
#define GetAsnIPAddress(srcBuf,defVal) \
(DWORD)(((srcBuf)->asnType && (srcBuf)->asnValue.string.length)? \
(*(DWORD*)((srcBuf)->asnValue.address.stream)) : (defVal))
#define IsAsnTypeNull(asnObj) (!((asnObj)->asnType))
#define IsAsnIPAddressTypeNull(asnObj) (!((asnObj)->asnType && (asnObj)->asnValue.address.length))
#define IsAsnOctetStringTypeNull(asnObj) (!((asnObj)->asnType && (asnObj)->asnValue.string.length))
#define MIB_II_SYS 0
#define MIB_II_IF MIB_II_SYS + 1
#define MIB_II_IPADDR MIB_II_IF + 1
#define FORWARD_MIB MIB_II_IPADDR + 1
#define MIB_II_IPNET FORWARD_MIB + 1
#define MIB_II_TCP MIB_II_IPNET + 1
#define MIB_II_UDP MIB_II_TCP + 1
#define MIB_II_TCP6 MIB_II_UDP + 1
#define MIB_II_UDP6_LISTENER MIB_II_TCP6 + 1
#define NUM_CACHE MIB_II_UDP6_LISTENER + 1
#define MIB_II_TRAP NUM_CACHE
#define NUM_LOCKS MIB_II_TRAP + 1
//
// Timeouts for the caches in millisecs
//
#define SYSTEM_CACHE_TIMEOUT (60 * 1000)
#define IF_CACHE_TIMEOUT (10 * 1000)
#define IP_ADDR_CACHE_TIMEOUT (20 * 1000)
#define IP_FORWARD_CACHE_TIMEOUT (20 * 1000)
#define IP_NET_CACHE_TIMEOUT (30 * 1000)
#define TCP_CACHE_TIMEOUT (30 * 1000)
#define UDP_CACHE_TIMEOUT (30 * 1000)
//
// Cant poll faster than twice IF cache timeout
//
#define MIN_POLL_TIME (IF_CACHE_TIMEOUT * 2)
//
// Default poll interval is 15 seconds
//
#define DEFAULT_POLL_TIME 15000
#define MAX_DIFF 20
#define SPILLOVER 10
#define is ==
#define isnot !=
#define and &&
#define or ||
#define INVALID_IFINDEX 0xffffffff
#ifdef MIB_DEBUG
#define TRACE0(Z) TracePrintf(g_hTrace,Z)
#define TRACE1(Y,Z) TracePrintf(g_hTrace,Y,Z)
#define TRACE2(X,Y,Z) TracePrintf(g_hTrace,X,Y,Z)
#define TRACE3(W,X,Y,Z) TracePrintf(g_hTrace,W,X,Y,Z)
#define TRACE4(V,W,X,Y,Z) TracePrintf(g_hTrace,V,W,X,Y,Z)
#define TRACE5(U,V,W,X,Y,Z) TracePrintf(g_hTrace,U,W,X,Y,Z)
#define TraceEnter(X) TracePrintf(g_hTrace,"Entering " X)
#define TraceLeave(X) TracePrintf(g_hTrace,"Leaving " X "\n")
#else
#define TRACE0(Z)
#define TRACE1(Y,Z)
#define TRACE2(X,Y,Z)
#define TRACE3(W,X,Y,Z)
#define TRACE4(V,W,X,Y,Z)
#define TRACE5(U,V,W,X,Y,Z)
#define TraceEnter(X)
#define TraceLeave(X)
#endif
extern RTL_RESOURCE g_LockTable[NUM_LOCKS];
#ifdef DEADLOCK_DEBUG
extern PBYTE g_pszLockNames[];
#define ReleaseLock(id) { \
TRACE1("Exit lock %s",g_pszLockNames[id]); \
RtlReleaseResource(&(g_LockTable[(id)])); \
TRACE1("Exited lock %s",g_pszLockNames[id]); \
}
#define EnterReader(id) { \
TRACE1("Entering Reader %s",g_pszLockNames[id]); \
RtlAcquireResourceShared(&(g_LockTable[(id)]),TRUE); \
TRACE1("Entered %s",g_pszLockNames[id]); \
}
#define EnterWriter(id) { \
TRACE1("Entering Writer %s",g_pszLockNames[id]); \
RtlAcquireResourceExclusive(&(g_LockTable[(id)]),TRUE); \
TRACE1("Entered %s",g_pszLockNames[id]); \
}
#else // DEADLOCK_DEBUG
#define ReleaseLock(id) RtlReleaseResource(&(g_LockTable[(id)]))
#define EnterReader(id) RtlAcquireResourceShared(&(g_LockTable[(id)]),TRUE)
#define EnterWriter(id) RtlAcquireResourceExclusive(&(g_LockTable[(id)]),TRUE)
#endif // DEADLOCK_DEBUG
#define InvalidateCache(X) g_dwLastUpdateTable[(X)] = 0
//
// SYS UNITS is 100s of NS. 1 millisec would be 1 * 10^4 sys units
//
#define SYS_UNITS_IN_1_MILLISEC 10000
#define MilliSecsToSysUnits(X) \
RtlEnlargedIntegerMultiply((X),SYS_UNITS_IN_1_MILLISEC)
#define REG_KEY_CPU \
TEXT("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0")
#define REG_KEY_SYSTEM \
TEXT("HARDWARE\\DESCRIPTION\\System")
#define REG_KEY_VERSION \
TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion")
#define REG_KEY_MIB2 \
TEXT("System\\CurrentControlSet\\Services\\SNMP\\Parameters\\RFC1156Agent")
#define REG_KEY_MIB2SUBAGENT_PARAMETERS \
TEXT("Software\\Microsoft\\RFC1156Agent\\CurrentVersion\\Parameters")
#define REG_VALUE_POLL L"TrapPollTimeMilliSecs"
#endif