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wine/dlls/inetmib1/main.c
Juan Lang 6a025c5a32 inetmib1: Rename a poorly named variable.
2009-05-18 14:31:06 +02:00

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/*
* Copyright 2008 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <assert.h>
#include <stdarg.h>
#include <stdlib.h>
#include <limits.h>
#include "windef.h"
#include "winbase.h"
#include "snmp.h"
#include "iphlpapi.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(inetmib1);
/**
* Utility functions
*/
static void copyInt(AsnAny *value, void *src)
{
value->asnType = ASN_INTEGER;
value->asnValue.number = *(DWORD *)src;
}
static void setStringValue(AsnAny *value, BYTE type, DWORD len, BYTE *str)
{
AsnAny strValue;
strValue.asnType = type;
strValue.asnValue.string.stream = str;
strValue.asnValue.string.length = len;
strValue.asnValue.string.dynamic = TRUE;
SnmpUtilAsnAnyCpy(value, &strValue);
}
static void copyLengthPrecededString(AsnAny *value, void *src)
{
DWORD len = *(DWORD *)src;
setStringValue(value, ASN_OCTETSTRING, len, (BYTE *)src + sizeof(DWORD));
}
typedef void (*copyValueFunc)(AsnAny *value, void *src);
struct structToAsnValue
{
size_t offset;
copyValueFunc copy;
};
static AsnInteger32 mapStructEntryToValue(struct structToAsnValue *map,
UINT mapLen, void *record, UINT id, BYTE bPduType, SnmpVarBind *pVarBind)
{
/* OIDs are 1-based */
if (!id)
return SNMP_ERRORSTATUS_NOSUCHNAME;
--id;
if (id >= mapLen)
return SNMP_ERRORSTATUS_NOSUCHNAME;
if (!map[id].copy)
return SNMP_ERRORSTATUS_NOSUCHNAME;
map[id].copy(&pVarBind->value, (BYTE *)record + map[id].offset);
return SNMP_ERRORSTATUS_NOERROR;
}
static void copyIpAddr(AsnAny *value, void *src)
{
setStringValue(value, ASN_IPADDRESS, sizeof(DWORD), src);
}
static UINT mib2[] = { 1,3,6,1,2,1 };
static UINT mib2System[] = { 1,3,6,1,2,1,1 };
typedef BOOL (*varqueryfunc)(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus);
struct mibImplementation
{
AsnObjectIdentifier name;
void (*init)(void);
varqueryfunc query;
void (*cleanup)(void);
};
static UINT mib2IfNumber[] = { 1,3,6,1,2,1,2,1 };
static PMIB_IFTABLE ifTable;
static void mib2IfNumberInit(void)
{
DWORD size = 0, ret = GetIfTable(NULL, &size, FALSE);
if (ret == ERROR_INSUFFICIENT_BUFFER)
{
MIB_IFTABLE *table = HeapAlloc(GetProcessHeap(), 0, size);
if (table)
{
if (!GetIfTable(table, &size, FALSE)) ifTable = table;
else HeapFree(GetProcessHeap(), 0, table );
}
}
}
static void mib2IfNumberCleanup(void)
{
HeapFree(GetProcessHeap(), 0, ifTable);
}
static BOOL mib2IfNumberQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier numberOid = DEFINE_OID(mib2IfNumber);
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
if ((bPduType == SNMP_PDU_GET &&
!SnmpUtilOidNCmp(&pVarBind->name, &numberOid, numberOid.idLength))
|| SnmpUtilOidNCmp(&pVarBind->name, &numberOid, numberOid.idLength)
< 0)
{
DWORD numIfs = ifTable ? ifTable->dwNumEntries : 0;
copyInt(&pVarBind->value, &numIfs);
if (bPduType == SNMP_PDU_GETNEXT)
{
SnmpUtilOidFree(&pVarBind->name);
SnmpUtilOidCpy(&pVarBind->name, &numberOid);
}
*pErrorStatus = SNMP_ERRORSTATUS_NOERROR;
}
else
{
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
/* Caller deals with OID if bPduType == SNMP_PDU_GETNEXT, so don't
* need to set it here.
*/
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static void copyOperStatus(AsnAny *value, void *src)
{
value->asnType = ASN_INTEGER;
/* The IPHlpApi definition of operational status differs from the MIB2 one,
* so map it to the MIB2 value.
*/
switch (*(DWORD *)src)
{
case MIB_IF_OPER_STATUS_OPERATIONAL:
value->asnValue.number = MIB_IF_ADMIN_STATUS_UP;
break;
case MIB_IF_OPER_STATUS_CONNECTING:
case MIB_IF_OPER_STATUS_CONNECTED:
value->asnValue.number = MIB_IF_ADMIN_STATUS_TESTING;
break;
default:
value->asnValue.number = MIB_IF_ADMIN_STATUS_DOWN;
};
}
/* Given an OID and a base OID that it must begin with, finds the item and
* integer instance from the OID. E.g., given an OID foo.1.2 and a base OID
* foo, returns item 1 and instance 2.
* If bPduType is not SNMP_PDU_GETNEXT and either the item or instance is
* missing, returns SNMP_ERRORSTATUS_NOSUCHNAME.
* If bPduType is SNMP_PDU_GETNEXT, returns the successor to the item and
* instance, or item 1, instance 1 if either is missing.
*/
static AsnInteger32 getItemAndIntegerInstanceFromOid(AsnObjectIdentifier *oid,
AsnObjectIdentifier *base, BYTE bPduType, UINT *item, UINT *instance)
{
AsnInteger32 ret = SNMP_ERRORSTATUS_NOERROR;
switch (bPduType)
{
case SNMP_PDU_GETNEXT:
if (SnmpUtilOidNCmp(oid, base, base->idLength) < 0)
{
*item = 1;
*instance = 1;
}
else if (!SnmpUtilOidNCmp(oid, base, base->idLength))
{
if (oid->idLength == base->idLength ||
oid->idLength == base->idLength + 1)
{
/* Either the table or an item within the table is specified,
* but the instance is not. Get the first instance.
*/
*instance = 1;
if (oid->idLength == base->idLength + 1)
*item = oid->ids[base->idLength];
else
*item = 1;
}
else
{
*item = oid->ids[base->idLength];
*instance = oid->ids[base->idLength + 1] + 1;
}
}
else
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
break;
default:
if (!SnmpUtilOidNCmp(oid, base, base->idLength))
{
if (oid->idLength == base->idLength ||
oid->idLength == base->idLength + 1)
{
/* Either the table or an item within the table is specified,
* but the instance is not.
*/
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
else
{
*item = oid->ids[base->idLength];
*instance = oid->ids[base->idLength + 1];
}
}
else
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
/* Given an OID and a base OID that it must begin with, finds the item from the
* OID. E.g., given an OID foo.1 and a base OID foo, returns item 1.
* If bPduType is not SNMP_PDU_GETNEXT and the item is missing, returns
* SNMP_ERRORSTATUS_NOSUCHNAME.
* If bPduType is SNMP_PDU_GETNEXT, returns the successor to the item, or item
* 1 if the item is missing.
*/
static AsnInteger32 getItemFromOid(AsnObjectIdentifier *oid,
AsnObjectIdentifier *base, BYTE bPduType, UINT *item)
{
AsnInteger32 ret = SNMP_ERRORSTATUS_NOERROR;
switch (bPduType)
{
case SNMP_PDU_GETNEXT:
if (SnmpUtilOidNCmp(oid, base, base->idLength) < 0)
*item = 1;
else if (!SnmpUtilOidNCmp(oid, base, base->idLength))
{
if (oid->idLength == base->idLength)
{
/* The item is missing, assume the first item */
*item = 1;
}
else
*item = oid->ids[base->idLength] + 1;
}
else
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
break;
default:
if (!SnmpUtilOidNCmp(oid, base, base->idLength))
{
if (oid->idLength == base->idLength)
{
/* The item is missing */
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
else
{
*item = oid->ids[base->idLength];
if (!*item)
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
}
else
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
struct GenericTable
{
DWORD numEntries;
BYTE entries[1];
};
static DWORD oidToIpAddr(AsnObjectIdentifier *oid)
{
assert(oid && oid->idLength >= 4);
/* Map the IDs to an IP address in little-endian order */
return (BYTE)oid->ids[3] << 24 | (BYTE)oid->ids[2] << 16 |
(BYTE)oid->ids[1] << 8 | (BYTE)oid->ids[0];
}
typedef void (*oidToKeyFunc)(AsnObjectIdentifier *oid, void *dst);
typedef int (*compareFunc)(const void *key, const void *value);
/* Finds the first value in the table that matches key. Returns its 1-based
* index if found, or 0 if not found.
*/
static UINT findValueInTable(const void *key,
struct GenericTable *table, size_t tableEntrySize, compareFunc compare)
{
UINT index = 0;
void *value;
value = bsearch(key, table->entries, table->numEntries, tableEntrySize,
compare);
if (value)
index = ((BYTE *)value - (BYTE *)table->entries) / tableEntrySize + 1;
return index;
}
/* Finds the first value in the table that matches oid, using makeKey to
* convert the oid to a key for comparison. Returns the value's 1-based
* index if found, or 0 if not found.
*/
static UINT findOidInTable(AsnObjectIdentifier *oid,
struct GenericTable *table, size_t tableEntrySize, oidToKeyFunc makeKey,
compareFunc compare)
{
UINT index = 0;
void *key = HeapAlloc(GetProcessHeap(), 0, tableEntrySize);
if (key)
{
makeKey(oid, key);
index = findValueInTable(key, table, tableEntrySize, compare);
HeapFree(GetProcessHeap(), 0, key);
}
return index;
}
/* Finds the first successor to the value in the table that does matches oid,
* using makeKey to convert the oid to a key for comparison. A successor is
* a value that does not match oid, so if multiple entries match an oid, only
* the first will ever be returned using this method.
* Returns the successor's 1-based index if found, or 0 if not found.
*/
static UINT findNextOidInTable(AsnObjectIdentifier *oid,
struct GenericTable *table, size_t tableEntrySize, oidToKeyFunc makeKey,
compareFunc compare)
{
UINT index = 0;
void *key = HeapAlloc(GetProcessHeap(), 0, tableEntrySize);
if (key)
{
makeKey(oid, key);
index = findValueInTable(key, table, tableEntrySize, compare);
if (index == 0)
{
/* Not found in table. If it's less than the first entry, return
* the first index. Otherwise just return 0 and let the caller
* handle finding the successor.
*/
if (compare(key, table->entries) < 0)
index = 1;
}
else
{
/* Skip any entries that match the same key. This enumeration will
* be incomplete, but it's what Windows appears to do if there are
* multiple entries with the same index in a table, and it avoids
* an infinite loop.
*/
for (++index; index <= table->numEntries && compare(key,
&table->entries[tableEntrySize * index]) == 0; ++index)
;
}
HeapFree(GetProcessHeap(), 0, key);
}
return index;
}
/* Given an OID and a base OID that it must begin with, finds the item and
* element of the table whose value matches the instance from the OID.
* The OID is converted to a key with the function makeKey, and compared
* against entries in the table with the function compare.
* If bPduType is not SNMP_PDU_GETNEXT and either the item or instance is
* missing, returns SNMP_ERRORSTATUS_NOSUCHNAME.
* If bPduType is SNMP_PDU_GETNEXT, returns the successor to the item and
* instance, or item 1, instance 1 if either is missing.
*/
static AsnInteger32 getItemAndInstanceFromTable(AsnObjectIdentifier *oid,
AsnObjectIdentifier *base, UINT instanceLen, BYTE bPduType,
struct GenericTable *table, size_t tableEntrySize, oidToKeyFunc makeKey,
compareFunc compare, UINT *item, UINT *instance)
{
AsnInteger32 ret = SNMP_ERRORSTATUS_NOERROR;
if (!table)
return SNMP_ERRORSTATUS_NOSUCHNAME;
switch (bPduType)
{
case SNMP_PDU_GETNEXT:
if (SnmpUtilOidNCmp(oid, base, base->idLength) < 0)
{
/* Return the first item and instance from the table */
*item = 1;
*instance = 1;
}
else if (!SnmpUtilOidNCmp(oid, base, base->idLength) &&
oid->idLength < base->idLength + instanceLen + 1)
{
/* Either the table or an item is specified, but the instance is
* not.
*/
*instance = 1;
if (oid->idLength >= base->idLength + 1)
{
*item = oid->ids[base->idLength];
if (!*item)
*item = 1;
}
else
*item = 1;
}
else if (!SnmpUtilOidNCmp(oid, base, base->idLength) &&
oid->idLength == base->idLength + instanceLen + 1)
{
*item = oid->ids[base->idLength];
if (!*item)
{
*instance = 1;
*item = 1;
}
else
{
AsnObjectIdentifier instanceOid = { instanceLen,
oid->ids + base->idLength + 1 };
*instance = findNextOidInTable(&instanceOid, table,
tableEntrySize, makeKey, compare);
if (!*instance || *instance > table->numEntries)
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
}
else
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
break;
default:
if (!SnmpUtilOidNCmp(oid, base, base->idLength) &&
oid->idLength == base->idLength + instanceLen + 1)
{
*item = oid->ids[base->idLength];
if (!*item)
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
else
{
AsnObjectIdentifier instanceOid = { instanceLen,
oid->ids + base->idLength + 1 };
*instance = findOidInTable(&instanceOid, table, tableEntrySize,
makeKey, compare);
if (!*instance)
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
}
else
ret = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static INT setOidWithItem(AsnObjectIdentifier *dst, AsnObjectIdentifier *base,
UINT item)
{
UINT id;
AsnObjectIdentifier oid;
INT ret;
SnmpUtilOidFree(dst);
ret = SnmpUtilOidCpy(dst, base);
if (ret)
{
oid.idLength = 1;
oid.ids = &id;
id = item;
ret = SnmpUtilOidAppend(dst, &oid);
}
return ret;
}
static INT setOidWithItemAndIpAddr(AsnObjectIdentifier *dst,
AsnObjectIdentifier *base, UINT item, DWORD addr)
{
UINT id;
BYTE *ptr;
AsnObjectIdentifier oid;
INT ret;
ret = setOidWithItem(dst, base, item);
if (ret)
{
oid.idLength = 1;
oid.ids = &id;
for (ptr = (BYTE *)&addr; ret && ptr < (BYTE *)&addr + sizeof(DWORD);
ptr++)
{
id = *ptr;
ret = SnmpUtilOidAppend(dst, &oid);
}
}
return ret;
}
static INT setOidWithItemAndInteger(AsnObjectIdentifier *dst,
AsnObjectIdentifier *base, UINT item, UINT instance)
{
AsnObjectIdentifier oid;
INT ret;
ret = setOidWithItem(dst, base, item);
if (ret)
{
oid.idLength = 1;
oid.ids = &instance;
ret = SnmpUtilOidAppend(dst, &oid);
}
return ret;
}
static struct structToAsnValue mib2IfEntryMap[] = {
{ FIELD_OFFSET(MIB_IFROW, dwIndex), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwDescrLen), copyLengthPrecededString },
{ FIELD_OFFSET(MIB_IFROW, dwType), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwMtu), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwSpeed), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwPhysAddrLen), copyLengthPrecededString },
{ FIELD_OFFSET(MIB_IFROW, dwAdminStatus), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOperStatus), copyOperStatus },
{ FIELD_OFFSET(MIB_IFROW, dwLastChange), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwInOctets), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwInUcastPkts), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwInNUcastPkts), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwInDiscards), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwInErrors), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwInUnknownProtos), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOutOctets), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOutUcastPkts), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOutNUcastPkts), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOutDiscards), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOutErrors), copyInt },
{ FIELD_OFFSET(MIB_IFROW, dwOutQLen), copyInt },
};
static UINT mib2IfEntry[] = { 1,3,6,1,2,1,2,2,1 };
static BOOL mib2IfEntryQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier entryOid = DEFINE_OID(mib2IfEntry);
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
if (!ifTable)
{
/* There is no interface present, so let the caller deal
* with finding the successor.
*/
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
else
{
UINT tableIndex = 0, item = 0;
*pErrorStatus = getItemAndIntegerInstanceFromOid(&pVarBind->name,
&entryOid, bPduType, &item, &tableIndex);
if (!*pErrorStatus)
{
assert(tableIndex);
assert(item);
if (tableIndex > ifTable->dwNumEntries)
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
else
{
*pErrorStatus = mapStructEntryToValue(mib2IfEntryMap,
DEFINE_SIZEOF(mib2IfEntryMap),
&ifTable->table[tableIndex - 1], item, bPduType,
pVarBind);
if (bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItemAndInteger(&pVarBind->name,
&entryOid, item, tableIndex);
}
}
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2Ip[] = { 1,3,6,1,2,1,4 };
static MIB_IPSTATS ipStats;
static void mib2IpStatsInit(void)
{
GetIpStatistics(&ipStats);
}
static struct structToAsnValue mib2IpMap[] = {
{ FIELD_OFFSET(MIB_IPSTATS, dwForwarding), copyInt }, /* 1 */
{ FIELD_OFFSET(MIB_IPSTATS, dwDefaultTTL), copyInt }, /* 2 */
{ FIELD_OFFSET(MIB_IPSTATS, dwInReceives), copyInt }, /* 3 */
{ FIELD_OFFSET(MIB_IPSTATS, dwInHdrErrors), copyInt }, /* 4 */
{ FIELD_OFFSET(MIB_IPSTATS, dwInAddrErrors), copyInt }, /* 5 */
{ FIELD_OFFSET(MIB_IPSTATS, dwForwDatagrams), copyInt }, /* 6 */
{ FIELD_OFFSET(MIB_IPSTATS, dwInUnknownProtos), copyInt }, /* 7 */
{ FIELD_OFFSET(MIB_IPSTATS, dwInDiscards), copyInt }, /* 8 */
{ FIELD_OFFSET(MIB_IPSTATS, dwInDelivers), copyInt }, /* 9 */
{ FIELD_OFFSET(MIB_IPSTATS, dwOutRequests), copyInt }, /* 10 */
{ FIELD_OFFSET(MIB_IPSTATS, dwOutDiscards), copyInt }, /* 11 */
{ FIELD_OFFSET(MIB_IPSTATS, dwOutNoRoutes), copyInt }, /* 12 */
{ FIELD_OFFSET(MIB_IPSTATS, dwReasmTimeout), copyInt }, /* 13 */
{ FIELD_OFFSET(MIB_IPSTATS, dwReasmReqds), copyInt }, /* 14 */
{ FIELD_OFFSET(MIB_IPSTATS, dwReasmOks), copyInt }, /* 15 */
{ FIELD_OFFSET(MIB_IPSTATS, dwReasmFails), copyInt }, /* 16 */
{ FIELD_OFFSET(MIB_IPSTATS, dwFragOks), copyInt }, /* 17 */
{ FIELD_OFFSET(MIB_IPSTATS, dwFragFails), copyInt }, /* 18 */
{ FIELD_OFFSET(MIB_IPSTATS, dwFragCreates), copyInt }, /* 19 */
{ 0, NULL }, /* 20: not used, IP addr table */
{ 0, NULL }, /* 21: not used, route table */
{ 0, NULL }, /* 22: not used, net to media (ARP) table */
{ FIELD_OFFSET(MIB_IPSTATS, dwRoutingDiscards), copyInt }, /* 23 */
};
static BOOL mib2IpStatsQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2Ip);
UINT item = 0;
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
*pErrorStatus = getItemFromOid(&pVarBind->name, &myOid, bPduType,
&item);
if (!*pErrorStatus)
{
*pErrorStatus = mapStructEntryToValue(mib2IpMap,
DEFINE_SIZEOF(mib2IpMap), &ipStats, item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItem(&pVarBind->name, &myOid, item);
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2IpAddr[] = { 1,3,6,1,2,1,4,20,1 };
static PMIB_IPADDRTABLE ipAddrTable;
static struct structToAsnValue mib2IpAddrMap[] = {
{ FIELD_OFFSET(MIB_IPADDRROW, dwAddr), copyIpAddr },
{ FIELD_OFFSET(MIB_IPADDRROW, dwIndex), copyInt },
{ FIELD_OFFSET(MIB_IPADDRROW, dwMask), copyIpAddr },
{ FIELD_OFFSET(MIB_IPADDRROW, dwBCastAddr), copyInt },
{ FIELD_OFFSET(MIB_IPADDRROW, dwReasmSize), copyInt },
};
static void mib2IpAddrInit(void)
{
DWORD size = 0, ret = GetIpAddrTable(NULL, &size, TRUE);
if (ret == ERROR_INSUFFICIENT_BUFFER)
{
MIB_IPADDRTABLE *table = HeapAlloc(GetProcessHeap(), 0, size);
if (table)
{
if (!GetIpAddrTable(table, &size, TRUE)) ipAddrTable = table;
else HeapFree(GetProcessHeap(), 0, table );
}
}
}
static void mib2IpAddrCleanup(void)
{
HeapFree(GetProcessHeap(), 0, ipAddrTable);
}
static void oidToIpAddrRow(AsnObjectIdentifier *oid, void *dst)
{
MIB_IPADDRROW *row = dst;
row->dwAddr = oidToIpAddr(oid);
}
static int compareIpAddrRow(const void *a, const void *b)
{
const MIB_IPADDRROW *key = a, *value = b;
return key->dwAddr - value->dwAddr;
}
static BOOL mib2IpAddrQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2IpAddr);
UINT tableIndex = 0, item = 0;
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
*pErrorStatus = getItemAndInstanceFromTable(&pVarBind->name,
&myOid, 4, bPduType, (struct GenericTable *)ipAddrTable,
sizeof(MIB_IPADDRROW), oidToIpAddrRow, compareIpAddrRow, &item,
&tableIndex);
if (!*pErrorStatus)
{
assert(tableIndex);
assert(item);
*pErrorStatus = mapStructEntryToValue(mib2IpAddrMap,
DEFINE_SIZEOF(mib2IpAddrMap),
&ipAddrTable->table[tableIndex - 1], item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItemAndIpAddr(&pVarBind->name, &myOid, item,
ipAddrTable->table[tableIndex - 1].dwAddr);
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2IpRoute[] = { 1,3,6,1,2,1,4,21,1 };
static PMIB_IPFORWARDTABLE ipRouteTable;
static struct structToAsnValue mib2IpRouteMap[] = {
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardDest), copyIpAddr },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardIfIndex), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardMetric1), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardMetric2), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardMetric3), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardMetric4), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardNextHop), copyIpAddr },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardType), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardProto), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardAge), copyInt },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardMask), copyIpAddr },
{ FIELD_OFFSET(MIB_IPFORWARDROW, dwForwardMetric5), copyInt },
};
static void mib2IpRouteInit(void)
{
DWORD size = 0, ret = GetIpForwardTable(NULL, &size, TRUE);
if (ret == ERROR_INSUFFICIENT_BUFFER)
{
MIB_IPFORWARDTABLE *table = HeapAlloc(GetProcessHeap(), 0, size);
if (table)
{
if (!GetIpForwardTable(table, &size, TRUE)) ipRouteTable = table;
else HeapFree(GetProcessHeap(), 0, table );
}
}
}
static void mib2IpRouteCleanup(void)
{
HeapFree(GetProcessHeap(), 0, ipRouteTable);
}
static void oidToIpForwardRow(AsnObjectIdentifier *oid, void *dst)
{
MIB_IPFORWARDROW *row = dst;
row->dwForwardDest = oidToIpAddr(oid);
}
static int compareIpForwardRow(const void *a, const void *b)
{
const MIB_IPFORWARDROW *key = a, *value = b;
return key->dwForwardDest - value->dwForwardDest;
}
static BOOL mib2IpRouteQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2IpRoute);
UINT tableIndex = 0, item = 0;
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
*pErrorStatus = getItemAndInstanceFromTable(&pVarBind->name,
&myOid, 4, bPduType, (struct GenericTable *)ipRouteTable,
sizeof(MIB_IPFORWARDROW), oidToIpForwardRow, compareIpForwardRow,
&item, &tableIndex);
if (!*pErrorStatus)
{
assert(tableIndex);
assert(item);
*pErrorStatus = mapStructEntryToValue(mib2IpRouteMap,
DEFINE_SIZEOF(mib2IpRouteMap),
&ipRouteTable->table[tableIndex - 1], item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItemAndIpAddr(&pVarBind->name, &myOid, item,
ipRouteTable->table[tableIndex - 1].dwForwardDest);
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2IpNet[] = { 1,3,6,1,2,1,4,22,1 };
static PMIB_IPNETTABLE ipNetTable;
static struct structToAsnValue mib2IpNetMap[] = {
{ FIELD_OFFSET(MIB_IPNETROW, dwIndex), copyInt },
{ FIELD_OFFSET(MIB_IPNETROW, dwPhysAddrLen), copyLengthPrecededString },
{ FIELD_OFFSET(MIB_IPNETROW, dwAddr), copyIpAddr },
{ FIELD_OFFSET(MIB_IPNETROW, dwType), copyInt },
};
static void mib2IpNetInit(void)
{
DWORD size = 0, ret = GetIpNetTable(NULL, &size, FALSE);
if (ret == ERROR_INSUFFICIENT_BUFFER)
{
MIB_IPNETTABLE *table = HeapAlloc(GetProcessHeap(), 0, size);
if (table)
{
if (!GetIpNetTable(table, &size, FALSE)) ipNetTable = table;
else HeapFree(GetProcessHeap(), 0, table );
}
}
}
static void mib2IpNetCleanup(void)
{
HeapFree(GetProcessHeap(), 0, ipNetTable);
}
static BOOL mib2IpNetQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2IpNet);
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
if (!ipNetTable)
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
else
{
UINT tableIndex = 0, item = 0;
*pErrorStatus = getItemAndIntegerInstanceFromOid(&pVarBind->name,
&myOid, bPduType, &item, &tableIndex);
if (!*pErrorStatus)
{
assert(tableIndex);
assert(item);
if (tableIndex > ipNetTable->dwNumEntries)
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
else
{
*pErrorStatus = mapStructEntryToValue(mib2IpNetMap,
DEFINE_SIZEOF(mib2IpNetMap),
&ipNetTable[tableIndex - 1], item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItemAndInteger(&pVarBind->name, &myOid,
item, tableIndex);
}
}
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2Icmp[] = { 1,3,6,1,2,1,5 };
static MIB_ICMP icmpStats;
static void mib2IcmpInit(void)
{
GetIcmpStatistics(&icmpStats);
}
static struct structToAsnValue mib2IcmpMap[] = {
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwMsgs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwErrors), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwDestUnreachs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwTimeExcds), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwParmProbs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwSrcQuenchs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwRedirects), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwEchos), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwEchoReps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwTimestamps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwTimestampReps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwAddrMasks), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpInStats.dwAddrMaskReps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwMsgs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwErrors), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwDestUnreachs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwTimeExcds), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwParmProbs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwSrcQuenchs), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwRedirects), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwEchos), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwEchoReps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwTimestamps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwTimestampReps), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwAddrMasks), copyInt },
{ FIELD_OFFSET(MIBICMPINFO, icmpOutStats.dwAddrMaskReps), copyInt },
};
static BOOL mib2IcmpQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2Icmp);
UINT item = 0;
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
*pErrorStatus = getItemFromOid(&pVarBind->name, &myOid, bPduType,
&item);
if (!*pErrorStatus)
{
*pErrorStatus = mapStructEntryToValue(mib2IcmpMap,
DEFINE_SIZEOF(mib2IcmpMap), &icmpStats, item, bPduType,
pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItem(&pVarBind->name, &myOid, item);
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2Tcp[] = { 1,3,6,1,2,1,6 };
static MIB_TCPSTATS tcpStats;
static void mib2TcpInit(void)
{
GetTcpStatistics(&tcpStats);
}
static struct structToAsnValue mib2TcpMap[] = {
{ FIELD_OFFSET(MIB_TCPSTATS, dwRtoAlgorithm), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwRtoMin), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwRtoMax), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwMaxConn), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwActiveOpens), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwPassiveOpens), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwAttemptFails), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwEstabResets), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwCurrEstab), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwInSegs), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwOutSegs), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwRetransSegs), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwInErrs), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwOutRsts), copyInt },
{ FIELD_OFFSET(MIB_TCPSTATS, dwNumConns), copyInt },
};
static BOOL mib2TcpQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2Tcp);
UINT item = 0;
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
*pErrorStatus = getItemFromOid(&pVarBind->name, &myOid, bPduType,
&item);
if (!*pErrorStatus)
{
*pErrorStatus = mapStructEntryToValue(mib2TcpMap,
DEFINE_SIZEOF(mib2TcpMap), &tcpStats, item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItem(&pVarBind->name, &myOid, item);
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2Udp[] = { 1,3,6,1,2,1,7 };
static MIB_UDPSTATS udpStats;
static void mib2UdpInit(void)
{
GetUdpStatistics(&udpStats);
}
static struct structToAsnValue mib2UdpMap[] = {
{ FIELD_OFFSET(MIB_UDPSTATS, dwInDatagrams), copyInt },
{ FIELD_OFFSET(MIB_UDPSTATS, dwNoPorts), copyInt },
{ FIELD_OFFSET(MIB_UDPSTATS, dwInErrors), copyInt },
{ FIELD_OFFSET(MIB_UDPSTATS, dwOutDatagrams), copyInt },
};
static BOOL mib2UdpQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2Udp);
UINT item;
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
*pErrorStatus = getItemFromOid(&pVarBind->name, &myOid, bPduType,
&item);
if (!*pErrorStatus)
{
*pErrorStatus = mapStructEntryToValue(mib2UdpMap,
DEFINE_SIZEOF(mib2UdpMap), &udpStats, item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
ret = setOidWithItem(&pVarBind->name, &myOid, item);
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
static UINT mib2UdpEntry[] = { 1,3,6,1,2,1,7,5,1 };
static PMIB_UDPTABLE udpTable;
static void mib2UdpEntryInit(void)
{
DWORD size = 0, ret = GetUdpTable(NULL, &size, TRUE);
if (ret == ERROR_INSUFFICIENT_BUFFER)
{
MIB_UDPTABLE *table = HeapAlloc(GetProcessHeap(), 0, size);
if (table)
{
if (!GetUdpTable(table, &size, TRUE)) udpTable = table;
else HeapFree(GetProcessHeap(), 0, table);
}
}
}
static void mib2UdpEntryCleanup(void)
{
HeapFree(GetProcessHeap(), 0, udpTable);
}
static struct structToAsnValue mib2UdpEntryMap[] = {
{ FIELD_OFFSET(MIB_UDPROW, dwLocalAddr), copyIpAddr },
{ FIELD_OFFSET(MIB_UDPROW, dwLocalPort), copyInt },
};
static void oidToUdpRow(AsnObjectIdentifier *oid, void *dst)
{
MIB_UDPROW *row = dst;
assert(oid && oid->idLength >= 5);
row->dwLocalAddr = oidToIpAddr(oid);
row->dwLocalPort = oid->ids[4];
}
static int compareUdpRow(const void *a, const void *b)
{
const MIB_UDPROW *key = a, *value = b;
int ret;
ret = key->dwLocalAddr - value->dwLocalAddr;
if (ret == 0)
ret = key->dwLocalPort - value->dwLocalPort;
return ret;
}
static BOOL mib2UdpEntryQuery(BYTE bPduType, SnmpVarBind *pVarBind,
AsnInteger32 *pErrorStatus)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2UdpEntry);
BOOL ret = TRUE;
TRACE("(0x%02x, %s, %p)\n", bPduType, SnmpUtilOidToA(&pVarBind->name),
pErrorStatus);
switch (bPduType)
{
case SNMP_PDU_GET:
case SNMP_PDU_GETNEXT:
if (!udpTable)
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
else
{
UINT tableIndex = 0, item = 0;
*pErrorStatus = getItemAndInstanceFromTable(&pVarBind->name, &myOid,
5, bPduType, (struct GenericTable *)udpTable,
sizeof(MIB_UDPROW), oidToUdpRow, compareUdpRow, &item,
&tableIndex);
if (!*pErrorStatus)
{
assert(tableIndex);
assert(item);
*pErrorStatus = mapStructEntryToValue(mib2UdpEntryMap,
DEFINE_SIZEOF(mib2UdpEntryMap),
&udpTable->table[tableIndex - 1], item, bPduType, pVarBind);
if (!*pErrorStatus && bPduType == SNMP_PDU_GETNEXT)
{
AsnObjectIdentifier oid;
ret = setOidWithItemAndIpAddr(&pVarBind->name, &myOid, item,
udpTable->table[tableIndex - 1].dwLocalAddr);
if (ret)
{
oid.idLength = 1;
oid.ids = &udpTable->table[tableIndex - 1].dwLocalPort;
ret = SnmpUtilOidAppend(&pVarBind->name, &oid);
}
}
}
}
break;
case SNMP_PDU_SET:
*pErrorStatus = SNMP_ERRORSTATUS_READONLY;
ret = FALSE;
break;
default:
FIXME("0x%02x: unsupported PDU type\n", bPduType);
*pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
}
return ret;
}
/* This list MUST BE lexicographically sorted */
static struct mibImplementation supportedIDs[] = {
{ DEFINE_OID(mib2IfNumber), mib2IfNumberInit, mib2IfNumberQuery,
mib2IfNumberCleanup },
{ DEFINE_OID(mib2IfEntry), NULL, mib2IfEntryQuery, NULL },
{ DEFINE_OID(mib2Ip), mib2IpStatsInit, mib2IpStatsQuery, NULL },
{ DEFINE_OID(mib2IpAddr), mib2IpAddrInit, mib2IpAddrQuery,
mib2IpAddrCleanup },
{ DEFINE_OID(mib2IpRoute), mib2IpRouteInit, mib2IpRouteQuery,
mib2IpRouteCleanup },
{ DEFINE_OID(mib2IpNet), mib2IpNetInit, mib2IpNetQuery, mib2IpNetCleanup },
{ DEFINE_OID(mib2Icmp), mib2IcmpInit, mib2IcmpQuery, NULL },
{ DEFINE_OID(mib2Tcp), mib2TcpInit, mib2TcpQuery, NULL },
{ DEFINE_OID(mib2Udp), mib2UdpInit, mib2UdpQuery, NULL },
{ DEFINE_OID(mib2UdpEntry), mib2UdpEntryInit, mib2UdpEntryQuery,
mib2UdpEntryCleanup },
};
static UINT minSupportedIDLength;
/*****************************************************************************
* SnmpExtensionInit [INETMIB1.@]
*/
BOOL WINAPI SnmpExtensionInit(DWORD dwUptimeReference,
HANDLE *phSubagentTrapEvent, AsnObjectIdentifier *pFirstSupportedRegion)
{
AsnObjectIdentifier myOid = DEFINE_OID(mib2System);
UINT i;
TRACE("(%d, %p, %p)\n", dwUptimeReference, phSubagentTrapEvent,
pFirstSupportedRegion);
minSupportedIDLength = UINT_MAX;
for (i = 0; i < sizeof(supportedIDs) / sizeof(supportedIDs[0]); i++)
{
if (supportedIDs[i].init)
supportedIDs[i].init();
if (supportedIDs[i].name.idLength < minSupportedIDLength)
minSupportedIDLength = supportedIDs[i].name.idLength;
}
*phSubagentTrapEvent = NULL;
SnmpUtilOidCpy(pFirstSupportedRegion, &myOid);
return TRUE;
}
static void cleanup(void)
{
UINT i;
for (i = 0; i < sizeof(supportedIDs) / sizeof(supportedIDs[0]); i++)
if (supportedIDs[i].cleanup)
supportedIDs[i].cleanup();
}
static struct mibImplementation *findSupportedQuery(UINT *ids, UINT idLength,
UINT *matchingIndex)
{
int indexHigh = DEFINE_SIZEOF(supportedIDs) - 1, indexLow = 0, i;
struct mibImplementation *impl = NULL;
AsnObjectIdentifier oid1 = { idLength, ids};
if (!idLength)
return NULL;
for (i = (indexLow + indexHigh) / 2; !impl && indexLow <= indexHigh;
i = (indexLow + indexHigh) / 2)
{
INT cmp;
cmp = SnmpUtilOidNCmp(&oid1, &supportedIDs[i].name, idLength);
if (!cmp)
{
impl = &supportedIDs[i];
*matchingIndex = i;
}
else if (cmp > 0)
indexLow = i + 1;
else
indexHigh = i - 1;
}
return impl;
}
/*****************************************************************************
* SnmpExtensionQuery [INETMIB1.@]
*/
BOOL WINAPI SnmpExtensionQuery(BYTE bPduType, SnmpVarBindList *pVarBindList,
AsnInteger32 *pErrorStatus, AsnInteger32 *pErrorIndex)
{
AsnObjectIdentifier mib2oid = DEFINE_OID(mib2);
AsnInteger32 error = SNMP_ERRORSTATUS_NOERROR, errorIndex = 0;
UINT i;
BOOL ret = TRUE;
TRACE("(0x%02x, %p, %p, %p)\n", bPduType, pVarBindList,
pErrorStatus, pErrorIndex);
for (i = 0; !error && i < pVarBindList->len; i++)
{
/* Ignore any OIDs not in MIB2 */
if (!SnmpUtilOidNCmp(&pVarBindList->list[i].name, &mib2oid,
mib2oid.idLength))
{
struct mibImplementation *impl = NULL;
UINT len, matchingIndex = 0;
TRACE("%s\n", SnmpUtilOidToA(&pVarBindList->list[i].name));
/* Search for an implementation matching as many octets as possible
*/
for (len = pVarBindList->list[i].name.idLength;
len >= minSupportedIDLength && !impl; len--)
impl = findSupportedQuery(pVarBindList->list[i].name.ids, len,
&matchingIndex);
if (impl && impl->query)
ret = impl->query(bPduType, &pVarBindList->list[i], &error);
else
error = SNMP_ERRORSTATUS_NOSUCHNAME;
if (error == SNMP_ERRORSTATUS_NOSUCHNAME &&
bPduType == SNMP_PDU_GETNEXT)
{
/* GetNext is special: it finds the successor to the given OID,
* so we have to continue until an implementation handles the
* query or we exhaust the table of supported OIDs.
*/
for (matchingIndex++; error == SNMP_ERRORSTATUS_NOSUCHNAME &&
matchingIndex < DEFINE_SIZEOF(supportedIDs);
matchingIndex++)
{
error = SNMP_ERRORSTATUS_NOERROR;
impl = &supportedIDs[matchingIndex];
if (impl->query)
ret = impl->query(bPduType, &pVarBindList->list[i],
&error);
else
error = SNMP_ERRORSTATUS_NOSUCHNAME;
}
/* If the query still isn't resolved, set the OID to the
* successor to the last entry in the table.
*/
if (error == SNMP_ERRORSTATUS_NOSUCHNAME)
{
SnmpUtilOidFree(&pVarBindList->list[i].name);
ret = SnmpUtilOidCpy(&pVarBindList->list[i].name,
&supportedIDs[matchingIndex - 1].name);
pVarBindList->list[i].name.ids[
pVarBindList->list[i].name.idLength - 1] += 1;
}
}
if (error)
errorIndex = i + 1;
}
}
*pErrorStatus = error;
*pErrorIndex = errorIndex;
return ret;
}
/*****************************************************************************
* DllMain [INETMIB1.@]
*/
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
switch (fdwReason)
{
case DLL_PROCESS_ATTACH:
DisableThreadLibraryCalls(hinstDLL);
break;
case DLL_PROCESS_DETACH:
cleanup();
break;
default:
break;
}
return TRUE;
}
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