1 /* Copyright (C) 2003 Art Yerkes
2  * A reimplementation of ifenum.c by Juan Lang
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
17  *
18  * This file is implemented on the IOCTL_TCP_QUERY_INFORMATION_EX ioctl on
19  * tcpip.sys
20  */
21 
22 #include "iphlpapi_private.h"
23 
24 WINE_DEFAULT_DEBUG_CHANNEL(iphlpapi);
25 
26 #ifndef TCPS_ESTABLISHED
27 # define TCPS_ESTABLISHED TCP_ESTABLISHED
28 #endif
29 #ifndef TCPS_SYN_SENT
30 # define TCPS_SYN_SENT TCP_SYN_SENT
31 #endif
32 #ifndef TCPS_SYN_RECEIVED
33 # define TCPS_SYN_RECEIVED TCP_SYN_RECV
34 #endif
35 #ifndef TCPS_FIN_WAIT_1
36 # define TCPS_FIN_WAIT_1 TCP_FIN_WAIT1
37 #endif
38 #ifndef TCPS_FIN_WAIT_2
39 # define TCPS_FIN_WAIT_2 TCP_FIN_WAIT2
40 #endif
41 #ifndef TCPS_TIME_WAIT
42 # define TCPS_TIME_WAIT TCP_TIME_WAIT
43 #endif
44 #ifndef TCPS_CLOSED
45 # define TCPS_CLOSED TCP_CLOSE
46 #endif
47 #ifndef TCPS_CLOSE_WAIT
48 # define TCPS_CLOSE_WAIT TCP_CLOSE_WAIT
49 #endif
50 #ifndef TCPS_LAST_ACK
51 # define TCPS_LAST_ACK TCP_LAST_ACK
52 #endif
53 #ifndef TCPS_LISTEN
54 # define TCPS_LISTEN TCP_LISTEN
55 #endif
56 #ifndef TCPS_CLOSING
57 # define TCPS_CLOSING TCP_CLOSING
58 #endif
59 
60 BOOL isIpEntity( HANDLE tcpFile, TDIEntityID *ent ) {
61     return (ent->tei_entity == CL_NL_ENTITY ||
62             ent->tei_entity == CO_NL_ENTITY);
63 }
64 
65 NTSTATUS getNthIpEntity( HANDLE tcpFile, DWORD index, TDIEntityID *ent ) {
66     DWORD numEntities = 0;
67     DWORD numRoutes = 0;
68     TDIEntityID *entitySet = 0;
69     NTSTATUS status = tdiGetEntityIDSet( tcpFile, &entitySet, &numEntities );
70     int i;
71 
72     if( !NT_SUCCESS(status) )
73         return status;
74 
75     for( i = 0; i < numEntities; i++ ) {
76         if( isIpEntity( tcpFile, &entitySet[i] ) ) {
77             TRACE("Entity %d is an IP Entity\n", i);
78             if( numRoutes == index ) break;
79             else numRoutes++;
80         }
81     }
82 
83     if( numRoutes == index && i < numEntities ) {
84         TRACE("Index %lu is entity #%d - %04x:%08x\n", index, i,
85               entitySet[i].tei_entity, entitySet[i].tei_instance);
86         memcpy( ent, &entitySet[i], sizeof(*ent) );
87         tdiFreeThingSet( entitySet );
88         return STATUS_SUCCESS;
89     } else {
90         tdiFreeThingSet( entitySet );
91         return STATUS_UNSUCCESSFUL;
92     }
93 }
94 
95 NTSTATUS tdiGetMibForIpEntity
96 ( HANDLE tcpFile, TDIEntityID *ent, IPSNMPInfo *entry ) {
97     TCP_REQUEST_QUERY_INFORMATION_EX req = TCP_REQUEST_QUERY_INFORMATION_INIT;
98     NTSTATUS status = STATUS_SUCCESS;
99     DWORD returnSize;
100 
101     memset( entry, 0, sizeof( *entry ) );
102 
103     TRACE("TdiGetMibForIpEntity(tcpFile 0x%p, entityId 0x%x)\n",
104           tcpFile, ent->tei_instance);
105 
106     req.ID.toi_class                = INFO_CLASS_PROTOCOL;
107     req.ID.toi_type                 = INFO_TYPE_PROVIDER;
108     req.ID.toi_id                   = IP_MIB_STATS_ID;
109     req.ID.toi_entity               = *ent;
110 
111     status = DeviceIoControl( tcpFile,
112                               IOCTL_TCP_QUERY_INFORMATION_EX,
113                               &req,
114                               sizeof(req),
115                               entry,
116                               sizeof(*entry),
117                               &returnSize,
118                               NULL );
119 
120     TRACE("TdiGetMibForIpEntity() => status = 0x%08lx, entry = {\n"
121            "  ipsi_forwarding ............ %lu\n"
122            "  ipsi_defaultttl ............ %lu\n"
123            "  ipsi_inreceives ............ %lu\n"
124            "  ipsi_indelivers ............ %lu\n"
125            "  ipsi_outrequests ........... %lu\n"
126            "  ipsi_routingdiscards ....... %lu\n"
127            "  ipsi_outdiscards ........... %lu\n"
128            "  ipsi_outnoroutes ........... %lu\n"
129            "  ipsi_numif ................. %lu\n"
130            "  ipsi_numaddr ............... %lu\n"
131            "  ipsi_numroutes ............. %lu\n"
132            "}\n",
133           status,
134           entry->ipsi_forwarding,
135           entry->ipsi_defaultttl,
136           entry->ipsi_inreceives,
137           entry->ipsi_indelivers,
138           entry->ipsi_outrequests,
139           entry->ipsi_routingdiscards,
140           entry->ipsi_outdiscards,
141           entry->ipsi_outnoroutes,
142           entry->ipsi_numif,
143           entry->ipsi_numaddr,
144           entry->ipsi_numroutes);
145 
146     return status;
147 }
148 
149 NTSTATUS tdiGetRoutesForIpEntity
150 ( HANDLE tcpFile, TDIEntityID *ent, IPRouteEntry **routes, PDWORD numRoutes ) {
151     NTSTATUS status = STATUS_SUCCESS;
152 
153     TRACE("TdiGetRoutesForIpEntity(tcpFile 0x%p, entityId 0x%x)\n",
154           tcpFile, ent->tei_instance);
155 
156     status = tdiGetSetOfThings( tcpFile,
157                                 INFO_CLASS_PROTOCOL,
158                                 INFO_TYPE_PROVIDER,
159                                 IP_MIB_ARPTABLE_ENTRY_ID,
160                                 CL_NL_ENTITY,
161 				ent->tei_instance,
162                                 0,
163                                 sizeof(IPRouteEntry),
164                                 (PVOID *)routes,
165                                 numRoutes);
166 
167     return status;
168 }
169 
170 NTSTATUS tdiGetIpAddrsForIpEntity
171 ( HANDLE tcpFile, TDIEntityID *ent, IPAddrEntry **addrs, PDWORD numAddrs ) {
172     NTSTATUS status;
173 
174     TRACE("TdiGetIpAddrsForIpEntity(tcpFile 0x%p, entityId 0x%x)\n",
175           tcpFile, ent->tei_instance);
176 
177     status = tdiGetSetOfThings( tcpFile,
178                                 INFO_CLASS_PROTOCOL,
179                                 INFO_TYPE_PROVIDER,
180                                 IP_MIB_ADDRTABLE_ENTRY_ID,
181                                 CL_NL_ENTITY,
182 				ent->tei_instance,
183                                 0,
184                                 sizeof(IPAddrEntry),
185                                 (PVOID *)addrs,
186                                 numAddrs );
187 
188     return status;
189 }
190 
191 DWORD getInterfaceStatsByName(const char *name, PMIB_IFROW entry)
192 {
193   if (!name)
194     return ERROR_INVALID_PARAMETER;
195   if (!entry)
196     return ERROR_INVALID_PARAMETER;
197 
198   return NO_ERROR;
199 }
200 
201 DWORD getInterfaceStatsByIndex(DWORD index, PMIB_IFROW entry)
202 {
203     return ERROR_INVALID_PARAMETER;
204 }
205 
206 DWORD getICMPStats(MIB_ICMP *stats)
207 {
208   FILE *fp;
209 
210   if (!stats)
211     return ERROR_INVALID_PARAMETER;
212 
213   memset(stats, 0, sizeof(MIB_ICMP));
214   /* get most of these stats from /proc/net/snmp, no error if can't */
215   fp = fopen("/proc/net/snmp", "r");
216   if (fp) {
217     const char hdr[] = "Icmp:";
218     char buf[512] = { 0 }, *ptr;
219 
220     do {
221       ptr = fgets(buf, sizeof(buf), fp);
222     } while (ptr && strncasecmp(buf, hdr, sizeof(hdr) - 1));
223     if (ptr) {
224       /* last line was a header, get another */
225       ptr = fgets(buf, sizeof(buf), fp);
226       if (ptr && strncasecmp(buf, hdr, sizeof(hdr) - 1) == 0) {
227         char *endPtr;
228 
229         ptr += sizeof(hdr);
230         if (ptr && *ptr) {
231           stats->stats.icmpInStats.dwMsgs = strtoul(ptr, &endPtr, 10);
232           ptr = endPtr;
233         }
234         if (ptr && *ptr) {
235           stats->stats.icmpInStats.dwErrors = strtoul(ptr, &endPtr, 10);
236           ptr = endPtr;
237         }
238         if (ptr && *ptr) {
239           stats->stats.icmpInStats.dwDestUnreachs = strtoul(ptr, &endPtr, 10);
240           ptr = endPtr;
241         }
242         if (ptr && *ptr) {
243           stats->stats.icmpInStats.dwTimeExcds = strtoul(ptr, &endPtr, 10);
244           ptr = endPtr;
245         }
246         if (ptr && *ptr) {
247           stats->stats.icmpInStats.dwParmProbs = strtoul(ptr, &endPtr, 10);
248           ptr = endPtr;
249         }
250         if (ptr && *ptr) {
251           stats->stats.icmpInStats.dwSrcQuenchs = strtoul(ptr, &endPtr, 10);
252           ptr = endPtr;
253         }
254         if (ptr && *ptr) {
255           stats->stats.icmpInStats.dwRedirects = strtoul(ptr, &endPtr, 10);
256           ptr = endPtr;
257         }
258         if (ptr && *ptr) {
259           stats->stats.icmpInStats.dwEchoReps = strtoul(ptr, &endPtr, 10);
260           ptr = endPtr;
261         }
262         if (ptr && *ptr) {
263           stats->stats.icmpInStats.dwTimestamps = strtoul(ptr, &endPtr, 10);
264           ptr = endPtr;
265         }
266         if (ptr && *ptr) {
267           stats->stats.icmpInStats.dwTimestampReps = strtoul(ptr, &endPtr, 10);
268           ptr = endPtr;
269         }
270         if (ptr && *ptr) {
271           stats->stats.icmpInStats.dwAddrMasks = strtoul(ptr, &endPtr, 10);
272           ptr = endPtr;
273         }
274         if (ptr && *ptr) {
275           stats->stats.icmpInStats.dwAddrMaskReps = strtoul(ptr, &endPtr, 10);
276           ptr = endPtr;
277         }
278         if (ptr && *ptr) {
279           stats->stats.icmpOutStats.dwMsgs = strtoul(ptr, &endPtr, 10);
280           ptr = endPtr;
281         }
282         if (ptr && *ptr) {
283           stats->stats.icmpOutStats.dwErrors = strtoul(ptr, &endPtr, 10);
284           ptr = endPtr;
285         }
286         if (ptr && *ptr) {
287           stats->stats.icmpOutStats.dwDestUnreachs = strtoul(ptr, &endPtr, 10);
288           ptr = endPtr;
289         }
290         if (ptr && *ptr) {
291           stats->stats.icmpOutStats.dwTimeExcds = strtoul(ptr, &endPtr, 10);
292           ptr = endPtr;
293         }
294         if (ptr && *ptr) {
295           stats->stats.icmpOutStats.dwParmProbs = strtoul(ptr, &endPtr, 10);
296           ptr = endPtr;
297         }
298         if (ptr && *ptr) {
299           stats->stats.icmpOutStats.dwSrcQuenchs = strtoul(ptr, &endPtr, 10);
300           ptr = endPtr;
301         }
302         if (ptr && *ptr) {
303           stats->stats.icmpOutStats.dwRedirects = strtoul(ptr, &endPtr, 10);
304           ptr = endPtr;
305         }
306         if (ptr && *ptr) {
307           stats->stats.icmpOutStats.dwEchoReps = strtoul(ptr, &endPtr, 10);
308           ptr = endPtr;
309         }
310         if (ptr && *ptr) {
311           stats->stats.icmpOutStats.dwTimestamps = strtoul(ptr, &endPtr, 10);
312           ptr = endPtr;
313         }
314         if (ptr && *ptr) {
315           stats->stats.icmpOutStats.dwTimestampReps = strtoul(ptr, &endPtr, 10);
316           ptr = endPtr;
317         }
318         if (ptr && *ptr) {
319           stats->stats.icmpOutStats.dwAddrMasks = strtoul(ptr, &endPtr, 10);
320           ptr = endPtr;
321         }
322         if (ptr && *ptr) {
323           stats->stats.icmpOutStats.dwAddrMaskReps = strtoul(ptr, &endPtr, 10);
324           ptr = endPtr;
325         }
326       }
327     }
328     fclose(fp);
329   }
330   return NO_ERROR;
331 }
332 
333 DWORD getIPStats(PMIB_IPSTATS stats, DWORD family)
334 {
335   if (!stats)
336     return ERROR_INVALID_PARAMETER;
337   return NO_ERROR;
338 }
339 
340 DWORD getTCPStats(MIB_TCPSTATS *stats, DWORD family)
341 {
342   if (!stats)
343     return ERROR_INVALID_PARAMETER;
344   return NO_ERROR;
345 }
346 
347 DWORD getUDPStats(MIB_UDPSTATS *stats, DWORD family)
348 {
349   if (!stats)
350     return ERROR_INVALID_PARAMETER;
351   return NO_ERROR;
352 }
353 
354 static DWORD getNumWithOneHeader(const char *filename)
355 {
356     return 0;
357 }
358 
359 DWORD getNumRoutes(void)
360 {
361     DWORD numEntities, numRoutes = 0;
362     TDIEntityID *entitySet;
363     HANDLE tcpFile;
364     int i;
365     NTSTATUS status;
366 
367     TRACE("called.\n");
368 
369     status = openTcpFile( &tcpFile, FILE_READ_DATA );
370     if( !NT_SUCCESS(status) ) {
371         ERR("openTcpFile returned 0x%08lx\n", status);
372         return 0;
373     }
374 
375     status = tdiGetEntityIDSet( tcpFile, &entitySet, &numEntities );
376     if( !NT_SUCCESS(status) ) {
377         ERR("tdiGetEntityIDSet returned 0x%08lx\n", status);
378         closeTcpFile( tcpFile );
379         return 0;
380     }
381 
382     for( i = 0; i < numEntities; i++ ) {
383         if( isIpEntity( tcpFile, &entitySet[i] ) ) {
384             IPSNMPInfo isnmp;
385             memset( &isnmp, 0, sizeof( isnmp ) );
386             status = tdiGetMibForIpEntity( tcpFile, &entitySet[i], &isnmp );
387             if( !NT_SUCCESS(status) ) {
388                 ERR("tdiGetMibForIpEntity returned 0x%08lx, for i = %d", status, i);
389                 numRoutes = 0;
390                 break;
391             }
392             numRoutes += isnmp.ipsi_numroutes;
393         }
394     }
395 
396     TRACE("numRoutes = %lu\n", numRoutes);
397 
398     tdiFreeThingSet( entitySet );
399     closeTcpFile( tcpFile );
400 
401     return numRoutes;
402 }
403 
404 VOID HexDump( PCHAR Data, DWORD Len ) {
405     int i;
406 
407     for( i = 0; i < Len; i++ ) {
408         if( !(i & 0xf) ) {
409             if( i ) fprintf(stderr,"\n");
410             fprintf(stderr,"%08x:", i);
411         }
412         fprintf( stderr, " %02x", Data[i] & 0xff );
413     }
414     fprintf(stderr,"\n");
415 }
416 
417 RouteTable *getRouteTable(void)
418 {
419     RouteTable *out_route_table;
420     DWORD numRoutes = getNumRoutes(), routesAdded = 0;
421     TDIEntityID ent;
422     HANDLE tcpFile;
423     NTSTATUS status = openTcpFile( &tcpFile, FILE_READ_DATA );
424     int i;
425 
426     if( !NT_SUCCESS(status) )
427         return 0;
428 
429     TRACE("GETTING ROUTE TABLE\n");
430 
431     out_route_table = HeapAlloc( GetProcessHeap(), 0,
432                                  sizeof(RouteTable) +
433                                  (sizeof(RouteEntry) * (numRoutes - 1)) );
434     if (!out_route_table) {
435         closeTcpFile(tcpFile);
436         return NULL;
437     }
438 
439     out_route_table->numRoutes = numRoutes;
440 
441     for( i = 0; routesAdded < out_route_table->numRoutes; i++ ) {
442         int j;
443         IPRouteEntry *route_set;
444 
445         getNthIpEntity( tcpFile, i, &ent );
446 
447         tdiGetRoutesForIpEntity( tcpFile, &ent, &route_set, &numRoutes );
448 
449         if( !route_set ) {
450             closeTcpFile( tcpFile );
451             HeapFree( GetProcessHeap(), 0, out_route_table );
452             return 0;
453         }
454 
455         TRACE("%lu routes in instance %d\n", numRoutes, i);
456 #if 0
457         HexDump( route_set,
458                  sizeof( IPRouteEntry ) *
459                  snmpInfo.ipsi_numroutes );
460 #endif
461 
462         for( j = 0; j < numRoutes; j++ ) {
463             int routeNum = j + routesAdded;
464             out_route_table->routes[routeNum].dest =
465                 route_set[j].ire_dest;
466             out_route_table->routes[routeNum].mask =
467                 route_set[j].ire_mask;
468             out_route_table->routes[routeNum].gateway =
469                 route_set[j].ire_gw;
470             out_route_table->routes[routeNum].ifIndex =
471                 route_set[j].ire_index;
472             out_route_table->routes[routeNum].metric =
473                 route_set[j].ire_metric1;
474         }
475 
476         if( route_set ) tdiFreeThingSet( route_set );
477 
478         routesAdded += numRoutes;
479     }
480 
481     closeTcpFile( tcpFile );
482 
483     TRACE("status = 0x%08lx, out_route_table = 0x%p\n", status, out_route_table);
484 
485     return out_route_table;
486 }
487 
488 DWORD getNumArpEntries(void)
489 {
490     DWORD numEntities;
491     TDIEntityID *entitySet = NULL;
492     HANDLE tcpFile;
493     int i, totalNumber = 0;
494     NTSTATUS status;
495     PMIB_IPNETROW IpArpTable = NULL;
496     DWORD returnSize;
497 
498     TRACE("called.\n");
499 
500     status = openTcpFile( &tcpFile, FILE_READ_DATA );
501     if( !NT_SUCCESS(status) ) {
502         ERR("openTcpFile returned 0x%08lx\n", status);
503         return 0;
504     }
505 
506     status = tdiGetEntityIDSet( tcpFile, &entitySet, &numEntities );
507 
508     for( i = 0; i < numEntities; i++ ) {
509         if( isInterface( &entitySet[i] ) &&
510 	    hasArp( tcpFile, &entitySet[i] ) ) {
511 
512 	    status = tdiGetSetOfThings( tcpFile,
513 					INFO_CLASS_PROTOCOL,
514 					INFO_TYPE_PROVIDER,
515 					IP_MIB_ARPTABLE_ENTRY_ID,
516 					AT_ENTITY,
517 					entitySet[i].tei_instance,
518 					0,
519 					sizeof(MIB_IPNETROW),
520 					(PVOID *)&IpArpTable,
521 					&returnSize );
522 
523 	    if( status == STATUS_SUCCESS ) totalNumber += returnSize;
524 		if( IpArpTable ) {
525 			tdiFreeThingSet( IpArpTable );
526 			IpArpTable = NULL;
527 		}
528 	}
529     }
530 
531     closeTcpFile( tcpFile );
532     if( IpArpTable ) tdiFreeThingSet( IpArpTable );
533     if( entitySet ) tdiFreeThingSet( entitySet );
534     return totalNumber;
535 }
536 
537 PMIB_IPNETTABLE getArpTable(void)
538 {
539     DWORD numEntities, returnSize;
540     TDIEntityID *entitySet;
541     HANDLE tcpFile;
542     int i, totalNumber, TmpIdx, CurrIdx = 0;
543     NTSTATUS status;
544     PMIB_IPNETTABLE IpArpTable = NULL;
545     PMIB_IPNETROW AdapterArpTable = NULL;
546 
547     TRACE("called.\n");
548 
549     totalNumber = getNumArpEntries();
550 
551     status = openTcpFile( &tcpFile, FILE_READ_DATA );
552     if( !NT_SUCCESS(status) ) {
553         ERR("openTcpFile returned 0x%08lx\n", status);
554         return 0;
555     }
556 
557     IpArpTable = HeapAlloc
558 	( GetProcessHeap(), 0,
559 	  sizeof(DWORD) + (sizeof(MIB_IPNETROW) * totalNumber) );
560     if (!IpArpTable) {
561         closeTcpFile(tcpFile);
562         return NULL;
563     }
564 
565     status = tdiGetEntityIDSet( tcpFile, &entitySet, &numEntities );
566 
567     for( i = 0; i < numEntities; i++ ) {
568         if( isInterface( &entitySet[i] ) &&
569 	    hasArp( tcpFile, &entitySet[i] ) ) {
570 
571 	    status = tdiGetSetOfThings( tcpFile,
572 					INFO_CLASS_PROTOCOL,
573 					INFO_TYPE_PROVIDER,
574 					IP_MIB_ARPTABLE_ENTRY_ID,
575 					AT_ENTITY,
576 					entitySet[i].tei_instance,
577 					0,
578 					sizeof(MIB_IPNETROW),
579 					(PVOID *)&AdapterArpTable,
580 					&returnSize );
581 
582             if( status == STATUS_SUCCESS ) {
583                 for( TmpIdx = 0; TmpIdx < returnSize; TmpIdx++, CurrIdx++ )
584                     IpArpTable->table[CurrIdx] = AdapterArpTable[TmpIdx];
585                 tdiFreeThingSet( AdapterArpTable );
586             }
587         }
588     }
589 
590     closeTcpFile( tcpFile );
591 
592     tdiFreeThingSet( entitySet );
593     IpArpTable->dwNumEntries = CurrIdx;
594 
595     return IpArpTable;
596 }
597 
598 DWORD getNumUdpEntries(void)
599 {
600   return getNumWithOneHeader("/proc/net/udp");
601 }
602 
603 PMIB_UDPTABLE getUdpTable(void)
604 {
605   DWORD numEntries = getNumUdpEntries();
606   PMIB_UDPTABLE ret;
607 
608   ret = (PMIB_UDPTABLE)calloc(1, sizeof(MIB_UDPTABLE) +
609    (numEntries - 1) * sizeof(MIB_UDPROW));
610   if (ret) {
611     FILE *fp;
612 
613     /* get from /proc/net/udp, no error if can't */
614     fp = fopen("/proc/net/udp", "r");
615     if (fp) {
616       char buf[512] = { 0 }, *ptr;
617 
618       /* skip header line */
619       ptr = fgets(buf, sizeof(buf), fp);
620       while (ptr && ret->dwNumEntries < numEntries) {
621         ptr = fgets(buf, sizeof(buf), fp);
622         if (ptr) {
623           char *endPtr;
624 
625           if (ptr && *ptr) {
626             strtoul(ptr, &endPtr, 16); /* skip */
627             ptr = endPtr;
628           }
629           if (ptr && *ptr) {
630             ptr++;
631             ret->table[ret->dwNumEntries].dwLocalAddr = strtoul(ptr, &endPtr,
632              16);
633             ptr = endPtr;
634           }
635           if (ptr && *ptr) {
636             ptr++;
637             ret->table[ret->dwNumEntries].dwLocalPort = strtoul(ptr, &endPtr,
638              16);
639             ptr = endPtr;
640           }
641           ret->dwNumEntries++;
642         }
643       }
644       fclose(fp);
645     }
646   }
647   return ret;
648 }
649 
650 DWORD getNumTcpEntries(void)
651 {
652   return getNumWithOneHeader("/proc/net/tcp");
653 }
654 
655 PMIB_TCPTABLE getTcpTable(void)
656 {
657     return 0;
658 }
659