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[libpcap] / pcap-tc.c
1 /*
2 * Copyright (c) 2008 CACE Technologies, Davis (California)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of CACE Technologies nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 */
31
32 #ifdef HAVE_CONFIG_H
33 #include <config.h>
34 #endif
35
36 #include <pcap.h>
37 #include <pcap-int.h>
38
39 #include "pcap-tc.h"
40
41 #include <malloc.h>
42 #include <memory.h>
43 #include <string.h>
44 #include <errno.h>
45
46 #ifdef _WIN32
47 #include <tchar.h>
48 #endif
49
50 typedef TC_STATUS (TC_CALLCONV *TcFcnQueryPortList) (PTC_PORT *ppPorts, PULONG pLength);
51 typedef TC_STATUS (TC_CALLCONV *TcFcnFreePortList) (TC_PORT *pPorts);
52
53 typedef PCHAR (TC_CALLCONV *TcFcnStatusGetString) (TC_STATUS status);
54
55 typedef PCHAR (TC_CALLCONV *TcFcnPortGetName) (TC_PORT port);
56 typedef PCHAR (TC_CALLCONV *TcFcnPortGetDescription) (TC_PORT port);
57
58 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceOpenByName) (PCHAR name, PTC_INSTANCE pInstance);
59 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceClose) (TC_INSTANCE instance);
60 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceSetFeature) (TC_INSTANCE instance, ULONG feature, ULONG value);
61 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceQueryFeature) (TC_INSTANCE instance, ULONG feature, PULONG pValue);
62 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceReceivePackets) (TC_INSTANCE instance, PTC_PACKETS_BUFFER pBuffer);
63 typedef HANDLE (TC_CALLCONV *TcFcnInstanceGetReceiveWaitHandle) (TC_INSTANCE instance);
64 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceTransmitPackets) (TC_INSTANCE instance, TC_PACKETS_BUFFER pBuffer);
65 typedef TC_STATUS (TC_CALLCONV *TcFcnInstanceQueryStatistics) (TC_INSTANCE instance, PTC_STATISTICS pStatistics);
66
67 typedef TC_STATUS (TC_CALLCONV *TcFcnPacketsBufferCreate) (ULONG size, PTC_PACKETS_BUFFER pBuffer);
68 typedef VOID (TC_CALLCONV *TcFcnPacketsBufferDestroy) (TC_PACKETS_BUFFER buffer);
69 typedef TC_STATUS (TC_CALLCONV *TcFcnPacketsBufferQueryNextPacket)(TC_PACKETS_BUFFER buffer, PTC_PACKET_HEADER pHeader, PVOID *ppData);
70 typedef TC_STATUS (TC_CALLCONV *TcFcnPacketsBufferCommitNextPacket)(TC_PACKETS_BUFFER buffer, PTC_PACKET_HEADER pHeader, PVOID pData);
71
72 typedef VOID (TC_CALLCONV *TcFcnStatisticsDestroy) (TC_STATISTICS statistics);
73 typedef TC_STATUS (TC_CALLCONV *TcFcnStatisticsUpdate) (TC_STATISTICS statistics);
74 typedef TC_STATUS (TC_CALLCONV *TcFcnStatisticsQueryValue) (TC_STATISTICS statistics, ULONG counterId, PULONGLONG pValue);
75
76 typedef enum LONG
77 {
78 TC_API_UNLOADED = 0,
79 TC_API_LOADED,
80 TC_API_CANNOT_LOAD,
81 TC_API_LOADING
82 }
83 TC_API_LOAD_STATUS;
84
85
86 typedef struct _TC_FUNCTIONS
87 {
88 TC_API_LOAD_STATUS LoadStatus;
89 #ifdef _WIN32
90 HMODULE hTcApiDllHandle;
91 #endif
92 TcFcnQueryPortList QueryPortList;
93 TcFcnFreePortList FreePortList;
94 TcFcnStatusGetString StatusGetString;
95
96 TcFcnPortGetName PortGetName;
97 TcFcnPortGetDescription PortGetDescription;
98
99 TcFcnInstanceOpenByName InstanceOpenByName;
100 TcFcnInstanceClose InstanceClose;
101 TcFcnInstanceSetFeature InstanceSetFeature;
102 TcFcnInstanceQueryFeature InstanceQueryFeature;
103 TcFcnInstanceReceivePackets InstanceReceivePackets;
104 #ifdef _WIN32
105 TcFcnInstanceGetReceiveWaitHandle InstanceGetReceiveWaitHandle;
106 #endif
107 TcFcnInstanceTransmitPackets InstanceTransmitPackets;
108 TcFcnInstanceQueryStatistics InstanceQueryStatistics;
109
110 TcFcnPacketsBufferCreate PacketsBufferCreate;
111 TcFcnPacketsBufferDestroy PacketsBufferDestroy;
112 TcFcnPacketsBufferQueryNextPacket PacketsBufferQueryNextPacket;
113 TcFcnPacketsBufferCommitNextPacket PacketsBufferCommitNextPacket;
114
115 TcFcnStatisticsDestroy StatisticsDestroy;
116 TcFcnStatisticsUpdate StatisticsUpdate;
117 TcFcnStatisticsQueryValue StatisticsQueryValue;
118 }
119 TC_FUNCTIONS;
120
121 static pcap_if_t* TcCreatePcapIfFromPort(TC_PORT port);
122 static int TcSetDatalink(pcap_t *p, int dlt);
123 static int TcGetNonBlock(pcap_t *p);
124 static int TcSetNonBlock(pcap_t *p, int nonblock);
125 static void TcCleanup(pcap_t *p);
126 static int TcInject(pcap_t *p, const void *buf, int size);
127 static int TcRead(pcap_t *p, int cnt, pcap_handler callback, u_char *user);
128 static int TcStats(pcap_t *p, struct pcap_stat *ps);
129 static int TcSetFilter(pcap_t *p, struct bpf_program *fp);
130 #ifdef _WIN32
131 static struct pcap_stat *TcStatsEx(pcap_t *p, int *pcap_stat_size);
132 static int TcSetBuff(pcap_t *p, int dim);
133 static int TcSetMode(pcap_t *p, int mode);
134 static int TcSetMinToCopy(pcap_t *p, int size);
135 static HANDLE TcGetReceiveWaitHandle(pcap_t *p);
136 static int TcOidGetRequest(pcap_t *p, bpf_u_int32 oid, void *data, size_t *lenp);
137 static int TcOidSetRequest(pcap_t *p, bpf_u_int32 oid, const void *data, size_t *lenp);
138 static u_int TcSendqueueTransmit(pcap_t *p, pcap_send_queue *queue, int sync);
139 static int TcSetUserBuffer(pcap_t *p, int size);
140 static int TcLiveDump(pcap_t *p, char *filename, int maxsize, int maxpacks);
141 static int TcLiveDumpEnded(pcap_t *p, int sync);
142 static PAirpcapHandle TcGetAirPcapHandle(pcap_t *p);
143 #endif
144
145 #ifdef _WIN32
146 TC_FUNCTIONS g_TcFunctions =
147 {
148 TC_API_UNLOADED, /* LoadStatus */
149 NULL, /* hTcApiDllHandle */
150 NULL, /* QueryPortList */
151 NULL, /* FreePortList */
152 NULL, /* StatusGetString */
153 NULL, /* PortGetName */
154 NULL, /* PortGetDescription */
155 NULL, /* InstanceOpenByName */
156 NULL, /* InstanceClose */
157 NULL, /* InstanceSetFeature */
158 NULL, /* InstanceQueryFeature */
159 NULL, /* InstanceReceivePackets */
160 NULL, /* InstanceGetReceiveWaitHandle */
161 NULL, /* InstanceTransmitPackets */
162 NULL, /* InstanceQueryStatistics */
163 NULL, /* PacketsBufferCreate */
164 NULL, /* PacketsBufferDestroy */
165 NULL, /* PacketsBufferQueryNextPacket */
166 NULL, /* PacketsBufferCommitNextPacket */
167 NULL, /* StatisticsDestroy */
168 NULL, /* StatisticsUpdate */
169 NULL /* StatisticsQueryValue */
170 };
171 #else
172 TC_FUNCTIONS g_TcFunctions =
173 {
174 TC_API_LOADED, /* LoadStatus */
175 TcQueryPortList,
176 TcFreePortList,
177 TcStatusGetString,
178 TcPortGetName,
179 TcPortGetDescription,
180 TcInstanceOpenByName,
181 TcInstanceClose,
182 TcInstanceSetFeature,
183 TcInstanceQueryFeature,
184 TcInstanceReceivePackets,
185 #ifdef _WIN32
186 TcInstanceGetReceiveWaitHandle,
187 #endif
188 TcInstanceTransmitPackets,
189 TcInstanceQueryStatistics,
190 TcPacketsBufferCreate,
191 TcPacketsBufferDestroy,
192 TcPacketsBufferQueryNextPacket,
193 TcPacketsBufferCommitNextPacket,
194 TcStatisticsDestroy,
195 TcStatisticsUpdate,
196 TcStatisticsQueryValue,
197 };
198 #endif
199
200 #define MAX_TC_PACKET_SIZE 9500
201
202 #pragma pack(push, 1)
203
204 #define PPH_PH_FLAG_PADDING ((UCHAR)0x01)
205 #define PPH_PH_VERSION ((UCHAR)0x00)
206
207 typedef struct _PPI_PACKET_HEADER
208 {
209 UCHAR PphVersion;
210 UCHAR PphFlags;
211 USHORT PphLength;
212 ULONG PphDlt;
213 }
214 PPI_PACKET_HEADER, *PPPI_PACKET_HEADER;
215
216 typedef struct _PPI_FIELD_HEADER
217 {
218 USHORT PfhType;
219 USHORT PfhLength;
220 }
221 PPI_FIELD_HEADER, *PPPI_FIELD_HEADER;
222
223
224 #define PPI_FIELD_TYPE_AGGREGATION_EXTENSION ((UCHAR)0x08)
225
226 typedef struct _PPI_FIELD_AGGREGATION_EXTENSION
227 {
228 ULONG InterfaceId;
229 }
230 PPI_FIELD_AGGREGATION_EXTENSION, *PPPI_FIELD_AGGREGATION_EXTENSION;
231
232
233 #define PPI_FIELD_TYPE_802_3_EXTENSION ((UCHAR)0x09)
234
235 #define PPI_FLD_802_3_EXT_FLAG_FCS_PRESENT ((ULONG)0x00000001)
236
237 typedef struct _PPI_FIELD_802_3_EXTENSION
238 {
239 ULONG Flags;
240 ULONG Errors;
241 }
242 PPI_FIELD_802_3_EXTENSION, *PPPI_FIELD_802_3_EXTENSION;
243
244 typedef struct _PPI_HEADER
245 {
246 PPI_PACKET_HEADER PacketHeader;
247 PPI_FIELD_HEADER AggregationFieldHeader;
248 PPI_FIELD_AGGREGATION_EXTENSION AggregationField;
249 PPI_FIELD_HEADER Dot3FieldHeader;
250 PPI_FIELD_802_3_EXTENSION Dot3Field;
251 }
252 PPI_HEADER, *PPPI_HEADER;
253 #pragma pack(pop)
254
255 #ifdef _WIN32
256 //
257 // This wrapper around loadlibrary appends the system folder (usually c:\windows\system32)
258 // to the relative path of the DLL, so that the DLL is always loaded from an absolute path
259 // (It's no longer possible to load airpcap.dll from the application folder).
260 // This solves the DLL Hijacking issue discovered in August 2010
261 // http://blog.metasploit.com/2010/08/exploiting-dll-hijacking-flaws.html
262 //
263 HMODULE LoadLibrarySafe(LPCTSTR lpFileName)
264 {
265 TCHAR path[MAX_PATH];
266 TCHAR fullFileName[MAX_PATH];
267 UINT res;
268 HMODULE hModule = NULL;
269 do
270 {
271 res = GetSystemDirectory(path, MAX_PATH);
272
273 if (res == 0)
274 {
275 //
276 // some bad failure occurred;
277 //
278 break;
279 }
280
281 if (res > MAX_PATH)
282 {
283 //
284 // the buffer was not big enough
285 //
286 SetLastError(ERROR_INSUFFICIENT_BUFFER);
287 break;
288 }
289
290 if (res + 1 + _tcslen(lpFileName) + 1 < MAX_PATH)
291 {
292 memcpy(fullFileName, path, res * sizeof(TCHAR));
293 fullFileName[res] = _T('\\');
294 memcpy(&fullFileName[res + 1], lpFileName, (_tcslen(lpFileName) + 1) * sizeof(TCHAR));
295
296 hModule = LoadLibrary(fullFileName);
297 }
298 else
299 {
300 SetLastError(ERROR_INSUFFICIENT_BUFFER);
301 }
302
303 }while(FALSE);
304
305 return hModule;
306 }
307
308 /*
309 * NOTE: this function should be called by the pcap functions that can theoretically
310 * deal with the Tc library for the first time, namely listing the adapters and
311 * opening one. All the other ones (close, read, write, set parameters) work
312 * on an open instance of TC, so we do not care to call this function
313 */
314 TC_API_LOAD_STATUS LoadTcFunctions(void)
315 {
316 TC_API_LOAD_STATUS currentStatus;
317
318 do
319 {
320 currentStatus = InterlockedCompareExchange((LONG*)&g_TcFunctions.LoadStatus, TC_API_LOADING, TC_API_UNLOADED);
321
322 while(currentStatus == TC_API_LOADING)
323 {
324 currentStatus = InterlockedCompareExchange((LONG*)&g_TcFunctions.LoadStatus, TC_API_LOADING, TC_API_LOADING);
325 Sleep(10);
326 }
327
328 /*
329 * at this point we are either in the LOADED state, unloaded state (i.e. we are the ones loading everything)
330 * or in cannot load
331 */
332 if(currentStatus == TC_API_LOADED)
333 {
334 return TC_API_LOADED;
335 }
336
337 if (currentStatus == TC_API_CANNOT_LOAD)
338 {
339 return TC_API_CANNOT_LOAD;
340 }
341
342 currentStatus = TC_API_CANNOT_LOAD;
343
344 g_TcFunctions.hTcApiDllHandle = LoadLibrarySafe("TcApi.dll");
345 if (g_TcFunctions.hTcApiDllHandle == NULL) break;
346
347 g_TcFunctions.QueryPortList = (TcFcnQueryPortList) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcQueryPortList");
348 g_TcFunctions.FreePortList = (TcFcnFreePortList) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcFreePortList");
349
350 g_TcFunctions.StatusGetString = (TcFcnStatusGetString) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcStatusGetString");
351
352 g_TcFunctions.PortGetName = (TcFcnPortGetName) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcPortGetName");
353 g_TcFunctions.PortGetDescription = (TcFcnPortGetDescription) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcPortGetDescription");
354
355 g_TcFunctions.InstanceOpenByName = (TcFcnInstanceOpenByName) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceOpenByName");
356 g_TcFunctions.InstanceClose = (TcFcnInstanceClose) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceClose");
357 g_TcFunctions.InstanceSetFeature = (TcFcnInstanceSetFeature) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceSetFeature");
358 g_TcFunctions.InstanceQueryFeature = (TcFcnInstanceQueryFeature) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceQueryFeature");
359 g_TcFunctions.InstanceReceivePackets = (TcFcnInstanceReceivePackets) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceReceivePackets");
360 g_TcFunctions.InstanceGetReceiveWaitHandle = (TcFcnInstanceGetReceiveWaitHandle)GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceGetReceiveWaitHandle");
361 g_TcFunctions.InstanceTransmitPackets = (TcFcnInstanceTransmitPackets)GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceTransmitPackets");
362 g_TcFunctions.InstanceQueryStatistics = (TcFcnInstanceQueryStatistics)GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcInstanceQueryStatistics");
363
364 g_TcFunctions.PacketsBufferCreate = (TcFcnPacketsBufferCreate) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcPacketsBufferCreate");
365 g_TcFunctions.PacketsBufferDestroy = (TcFcnPacketsBufferDestroy) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcPacketsBufferDestroy");
366 g_TcFunctions.PacketsBufferQueryNextPacket = (TcFcnPacketsBufferQueryNextPacket)GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcPacketsBufferQueryNextPacket");
367 g_TcFunctions.PacketsBufferCommitNextPacket = (TcFcnPacketsBufferCommitNextPacket)GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcPacketsBufferCommitNextPacket");
368
369 g_TcFunctions.StatisticsDestroy = (TcFcnStatisticsDestroy) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcStatisticsDestroy");
370 g_TcFunctions.StatisticsUpdate = (TcFcnStatisticsUpdate) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcStatisticsUpdate");
371 g_TcFunctions.StatisticsQueryValue = (TcFcnStatisticsQueryValue) GetProcAddress(g_TcFunctions.hTcApiDllHandle, "TcStatisticsQueryValue");
372
373 if ( g_TcFunctions.QueryPortList == NULL
374 || g_TcFunctions.FreePortList == NULL
375 || g_TcFunctions.StatusGetString == NULL
376 || g_TcFunctions.PortGetName == NULL
377 || g_TcFunctions.PortGetDescription == NULL
378 || g_TcFunctions.InstanceOpenByName == NULL
379 || g_TcFunctions.InstanceClose == NULL
380 || g_TcFunctions.InstanceSetFeature == NULL
381 || g_TcFunctions.InstanceQueryFeature == NULL
382 || g_TcFunctions.InstanceReceivePackets == NULL
383 || g_TcFunctions.InstanceGetReceiveWaitHandle == NULL
384 || g_TcFunctions.InstanceTransmitPackets == NULL
385 || g_TcFunctions.InstanceQueryStatistics == NULL
386 || g_TcFunctions.PacketsBufferCreate == NULL
387 || g_TcFunctions.PacketsBufferDestroy == NULL
388 || g_TcFunctions.PacketsBufferQueryNextPacket == NULL
389 || g_TcFunctions.PacketsBufferCommitNextPacket == NULL
390 || g_TcFunctions.StatisticsDestroy == NULL
391 || g_TcFunctions.StatisticsUpdate == NULL
392 || g_TcFunctions.StatisticsQueryValue == NULL
393 )
394 {
395 break;
396 }
397
398 /*
399 * everything got loaded, yay!!
400 */
401 currentStatus = TC_API_LOADED;
402 }while(FALSE);
403
404 if (currentStatus != TC_API_LOADED)
405 {
406 if (g_TcFunctions.hTcApiDllHandle != NULL)
407 {
408 FreeLibrary(g_TcFunctions.hTcApiDllHandle);
409 g_TcFunctions.hTcApiDllHandle = NULL;
410 }
411 }
412
413 InterlockedExchange((LONG*)&g_TcFunctions.LoadStatus, currentStatus);
414
415 return currentStatus;
416 }
417 #else
418 // static linking
419 TC_API_LOAD_STATUS LoadTcFunctions(void)
420 {
421 return TC_API_LOADED;
422 }
423 #endif
424
425 /*
426 * Private data for capturing on TurboCap devices.
427 */
428 struct pcap_tc {
429 TC_INSTANCE TcInstance;
430 TC_PACKETS_BUFFER TcPacketsBuffer;
431 ULONG TcAcceptedCount;
432 u_char *PpiPacket;
433 };
434
435 int
436 TcFindAllDevs(pcap_if_list_t *devlist, char *errbuf)
437 {
438 TC_API_LOAD_STATUS loadStatus;
439 ULONG numPorts;
440 PTC_PORT pPorts = NULL;
441 TC_STATUS status;
442 int result = 0;
443 pcap_if_t *dev;
444 ULONG i;
445
446 do
447 {
448 loadStatus = LoadTcFunctions();
449
450 if (loadStatus != TC_API_LOADED)
451 {
452 result = 0;
453 break;
454 }
455
456 /*
457 * enumerate the ports, and add them to the list
458 */
459 status = g_TcFunctions.QueryPortList(&pPorts, &numPorts);
460
461 if (status != TC_SUCCESS)
462 {
463 result = 0;
464 break;
465 }
466
467 for (i = 0; i < numPorts; i++)
468 {
469 /*
470 * transform the port into an entry in the list
471 */
472 dev = TcCreatePcapIfFromPort(pPorts[i]);
473
474 if (dev != NULL)
475 add_dev(devlist, dev->name, dev->flags, dev->description, errbuf);
476 }
477
478 if (numPorts > 0)
479 {
480 /*
481 * ignore the result here
482 */
483 status = g_TcFunctions.FreePortList(pPorts);
484 }
485
486 }while(FALSE);
487
488 return result;
489 }
490
491 static pcap_if_t* TcCreatePcapIfFromPort(TC_PORT port)
492 {
493 CHAR *name;
494 CHAR *description;
495 pcap_if_t *newIf = NULL;
496
497 newIf = (pcap_if_t*)malloc(sizeof(*newIf));
498 if (newIf == NULL)
499 {
500 return NULL;
501 }
502
503 memset(newIf, 0, sizeof(*newIf));
504
505 name = g_TcFunctions.PortGetName(port);
506 description = g_TcFunctions.PortGetDescription(port);
507
508 newIf->name = (char*)malloc(strlen(name) + 1);
509 if (newIf->name == NULL)
510 {
511 free(newIf);
512 return NULL;
513 }
514
515 newIf->description = (char*)malloc(strlen(description) + 1);
516 if (newIf->description == NULL)
517 {
518 free(newIf->name);
519 free(newIf);
520 return NULL;
521 }
522
523 strcpy(newIf->name, name);
524 strcpy(newIf->description, description);
525
526 newIf->addresses = NULL;
527 newIf->next = NULL;
528 newIf->flags = 0;
529
530 return newIf;
531
532 }
533
534 static int
535 TcActivate(pcap_t *p)
536 {
537 struct pcap_tc *pt = p->priv;
538 TC_STATUS status;
539 ULONG timeout;
540 PPPI_HEADER pPpiHeader;
541
542 if (p->opt.rfmon)
543 {
544 /*
545 * No monitor mode on Tc cards; they're Ethernet
546 * capture adapters.
547 */
548 return PCAP_ERROR_RFMON_NOTSUP;
549 }
550
551 pt->PpiPacket = malloc(sizeof(PPI_HEADER) + MAX_TC_PACKET_SIZE);
552
553 if (pt->PpiPacket == NULL)
554 {
555 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Error allocating memory");
556 return PCAP_ERROR;
557 }
558
559 /*
560 * Turn a negative snapshot value (invalid), a snapshot value of
561 * 0 (unspecified), or a value bigger than the normal maximum
562 * value, into the maximum allowed value.
563 *
564 * If some application really *needs* a bigger snapshot
565 * length, we should just increase MAXIMUM_SNAPLEN.
566 */
567 if (p->snapshot <= 0 || p->snapshot > MAXIMUM_SNAPLEN)
568 p->snapshot = MAXIMUM_SNAPLEN;
569
570 /*
571 * Initialize the PPI fixed fields
572 */
573 pPpiHeader = (PPPI_HEADER)pt->PpiPacket;
574 pPpiHeader->PacketHeader.PphDlt = DLT_EN10MB;
575 pPpiHeader->PacketHeader.PphLength = sizeof(PPI_HEADER);
576 pPpiHeader->PacketHeader.PphFlags = 0;
577 pPpiHeader->PacketHeader.PphVersion = 0;
578
579 pPpiHeader->AggregationFieldHeader.PfhLength = sizeof(PPI_FIELD_AGGREGATION_EXTENSION);
580 pPpiHeader->AggregationFieldHeader.PfhType = PPI_FIELD_TYPE_AGGREGATION_EXTENSION;
581
582 pPpiHeader->Dot3FieldHeader.PfhLength = sizeof(PPI_FIELD_802_3_EXTENSION);
583 pPpiHeader->Dot3FieldHeader.PfhType = PPI_FIELD_TYPE_802_3_EXTENSION;
584
585 status = g_TcFunctions.InstanceOpenByName(p->opt.device, &pt->TcInstance);
586
587 if (status != TC_SUCCESS)
588 {
589 /* Adapter detected but we are not able to open it. Return failure. */
590 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Error opening TurboCap adapter: %s", g_TcFunctions.StatusGetString(status));
591 return PCAP_ERROR;
592 }
593
594 p->linktype = DLT_EN10MB;
595 p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2);
596 /*
597 * If that fails, just leave the list empty.
598 */
599 if (p->dlt_list != NULL) {
600 p->dlt_list[0] = DLT_EN10MB;
601 p->dlt_list[1] = DLT_PPI;
602 p->dlt_count = 2;
603 }
604
605 /*
606 * ignore promiscuous mode
607 * p->opt.promisc
608 */
609
610
611 /*
612 * ignore all the buffer sizes
613 */
614
615 /*
616 * enable reception
617 */
618 status = g_TcFunctions.InstanceSetFeature(pt->TcInstance, TC_INST_FT_RX_STATUS, 1);
619
620 if (status != TC_SUCCESS)
621 {
622 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,"Error enabling reception on a TurboCap instance: %s", g_TcFunctions.StatusGetString(status));
623 goto bad;
624 }
625
626 /*
627 * enable transmission
628 */
629 status = g_TcFunctions.InstanceSetFeature(pt->TcInstance, TC_INST_FT_TX_STATUS, 1);
630 /*
631 * Ignore the error here.
632 */
633
634 p->inject_op = TcInject;
635 /*
636 * if the timeout is -1, it means immediate return, no timeout
637 * if the timeout is 0, it means INFINITE
638 */
639
640 if (p->opt.timeout == 0)
641 {
642 timeout = 0xFFFFFFFF;
643 }
644 else
645 if (p->opt.timeout < 0)
646 {
647 /*
648 * we insert a minimal timeout here
649 */
650 timeout = 10;
651 }
652 else
653 {
654 timeout = p->opt.timeout;
655 }
656
657 status = g_TcFunctions.InstanceSetFeature(pt->TcInstance, TC_INST_FT_READ_TIMEOUT, timeout);
658
659 if (status != TC_SUCCESS)
660 {
661 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,"Error setting the read timeout a TurboCap instance: %s", g_TcFunctions.StatusGetString(status));
662 goto bad;
663 }
664
665 p->read_op = TcRead;
666 p->setfilter_op = TcSetFilter;
667 p->setdirection_op = NULL; /* Not implemented. */
668 p->set_datalink_op = TcSetDatalink;
669 p->getnonblock_op = TcGetNonBlock;
670 p->setnonblock_op = TcSetNonBlock;
671 p->stats_op = TcStats;
672 #ifdef _WIN32
673 p->stats_ex_op = TcStatsEx;
674 p->setbuff_op = TcSetBuff;
675 p->setmode_op = TcSetMode;
676 p->setmintocopy_op = TcSetMinToCopy;
677 p->getevent_op = TcGetReceiveWaitHandle;
678 p->oid_get_request_op = TcOidGetRequest;
679 p->oid_set_request_op = TcOidSetRequest;
680 p->sendqueue_transmit_op = TcSendqueueTransmit;
681 p->setuserbuffer_op = TcSetUserBuffer;
682 p->live_dump_op = TcLiveDump;
683 p->live_dump_ended_op = TcLiveDumpEnded;
684 p->get_airpcap_handle_op = TcGetAirPcapHandle;
685 #else
686 p->selectable_fd = -1;
687 #endif
688
689 p->cleanup_op = TcCleanup;
690
691 return 0;
692 bad:
693 TcCleanup(p);
694 return PCAP_ERROR;
695 }
696
697 pcap_t *
698 TcCreate(const char *device, char *ebuf, int *is_ours)
699 {
700 ULONG numPorts;
701 PTC_PORT pPorts = NULL;
702 TC_STATUS status;
703 int is_tc;
704 ULONG i;
705 pcap_t *p;
706
707 if (LoadTcFunctions() != TC_API_LOADED)
708 {
709 /*
710 * XXX - report this as an error rather than as
711 * "not a TurboCap device"?
712 */
713 *is_ours = 0;
714 return NULL;
715 }
716
717 /*
718 * enumerate the ports, and add them to the list
719 */
720 status = g_TcFunctions.QueryPortList(&pPorts, &numPorts);
721
722 if (status != TC_SUCCESS)
723 {
724 /*
725 * XXX - report this as an error rather than as
726 * "not a TurboCap device"?
727 */
728 *is_ours = 0;
729 return NULL;
730 }
731
732 is_tc = FALSE;
733 for (i = 0; i < numPorts; i++)
734 {
735 if (strcmp(g_TcFunctions.PortGetName(pPorts[i]), device) == 0)
736 {
737 is_tc = TRUE;
738 break;
739 }
740 }
741
742 if (numPorts > 0)
743 {
744 /*
745 * ignore the result here
746 */
747 (void)g_TcFunctions.FreePortList(pPorts);
748 }
749
750 if (!is_tc)
751 {
752 *is_ours = 0;
753 return NULL;
754 }
755
756 /* OK, it's probably ours. */
757 *is_ours = 1;
758
759 p = pcap_create_common(ebuf, sizeof (struct pcap_tc));
760 if (p == NULL)
761 return NULL;
762
763 p->activate_op = TcActivate;
764 /*
765 * Set these up front, so that, even if our client tries
766 * to set non-blocking mode before we're activated, or
767 * query the state of non-blocking mode, they get an error,
768 * rather than having the non-blocking mode option set
769 * for use later.
770 */
771 p->getnonblock_op = TcGetNonBlock;
772 p->setnonblock_op = TcSetNonBlock;
773 return p;
774 }
775
776 static int TcSetDatalink(pcap_t *p, int dlt)
777 {
778 /*
779 * We don't have to do any work here; pcap_set_datalink() checks
780 * whether the value is in the list of DLT_ values we
781 * supplied, so we don't have to, and, if it is valid, sets
782 * p->linktype to the new value; we don't have to do anything
783 * in hardware, we just use what's in p->linktype.
784 *
785 * We do have to have a routine, however, so that pcap_set_datalink()
786 * doesn't think we don't support setting the link-layer header
787 * type at all.
788 */
789 return 0;
790 }
791
792 static int TcGetNonBlock(pcap_t *p)
793 {
794 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
795 "Non-blocking mode isn't supported for TurboCap ports");
796 return -1;
797 }
798
799 static int TcSetNonBlock(pcap_t *p, int nonblock)
800 {
801 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
802 "Non-blocking mode isn't supported for TurboCap ports");
803 return -1;
804 }
805
806 static void TcCleanup(pcap_t *p)
807 {
808 struct pcap_tc *pt = p->priv;
809
810 if (pt->TcPacketsBuffer != NULL)
811 {
812 g_TcFunctions.PacketsBufferDestroy(pt->TcPacketsBuffer);
813 pt->TcPacketsBuffer = NULL;
814 }
815 if (pt->TcInstance != NULL)
816 {
817 /*
818 * here we do not check for the error values
819 */
820 g_TcFunctions.InstanceClose(pt->TcInstance);
821 pt->TcInstance = NULL;
822 }
823
824 if (pt->PpiPacket != NULL)
825 {
826 free(pt->PpiPacket);
827 pt->PpiPacket = NULL;
828 }
829
830 pcap_cleanup_live_common(p);
831 }
832
833 /* Send a packet to the network */
834 static int TcInject(pcap_t *p, const void *buf, int size)
835 {
836 struct pcap_tc *pt = p->priv;
837 TC_STATUS status;
838 TC_PACKETS_BUFFER buffer;
839 TC_PACKET_HEADER header;
840
841 if (size >= 0xFFFF)
842 {
843 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send error: the TurboCap API does not support packets larger than 64k");
844 return -1;
845 }
846
847 status = g_TcFunctions.PacketsBufferCreate(sizeof(TC_PACKET_HEADER) + TC_ALIGN_USHORT_TO_64BIT((USHORT)size), &buffer);
848
849 if (status != TC_SUCCESS)
850 {
851 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send error: TcPacketsBufferCreate failure: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
852 return -1;
853 }
854
855 /*
856 * we assume that the packet is without the checksum, as common with WinPcap
857 */
858 memset(&header, 0, sizeof(header));
859
860 header.Length = (USHORT)size;
861 header.CapturedLength = header.Length;
862
863 status = g_TcFunctions.PacketsBufferCommitNextPacket(buffer, &header, (PVOID)buf);
864
865 if (status == TC_SUCCESS)
866 {
867 status = g_TcFunctions.InstanceTransmitPackets(pt->TcInstance, buffer);
868
869 if (status != TC_SUCCESS)
870 {
871 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send error: TcInstanceTransmitPackets failure: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
872 }
873 }
874 else
875 {
876 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send error: TcPacketsBufferCommitNextPacket failure: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
877 }
878
879 g_TcFunctions.PacketsBufferDestroy(buffer);
880
881 if (status != TC_SUCCESS)
882 {
883 return -1;
884 }
885 else
886 {
887 return 0;
888 }
889 }
890
891 static int TcRead(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
892 {
893 struct pcap_tc *pt = p->priv;
894 TC_STATUS status;
895 int n = 0;
896
897 /*
898 * Has "pcap_breakloop()" been called?
899 */
900 if (p->break_loop)
901 {
902 /*
903 * Yes - clear the flag that indicates that it
904 * has, and return -2 to indicate that we were
905 * told to break out of the loop.
906 */
907 p->break_loop = 0;
908 return -2;
909 }
910
911 if (pt->TcPacketsBuffer == NULL)
912 {
913 status = g_TcFunctions.InstanceReceivePackets(pt->TcInstance, &pt->TcPacketsBuffer);
914 if (status != TC_SUCCESS)
915 {
916 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "read error, TcInstanceReceivePackets failure: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
917 return -1;
918 }
919 }
920
921 while (TRUE)
922 {
923 struct pcap_pkthdr hdr;
924 TC_PACKET_HEADER tcHeader;
925 PVOID data;
926 ULONG filterResult;
927
928 /*
929 * Has "pcap_breakloop()" been called?
930 * If so, return immediately - if we haven't read any
931 * packets, clear the flag and return -2 to indicate
932 * that we were told to break out of the loop, otherwise
933 * leave the flag set, so that the *next* call will break
934 * out of the loop without having read any packets, and
935 * return the number of packets we've processed so far.
936 */
937 if (p->break_loop)
938 {
939 if (n == 0)
940 {
941 p->break_loop = 0;
942 return -2;
943 }
944 else
945 {
946 return n;
947 }
948 }
949
950 if (pt->TcPacketsBuffer == NULL)
951 {
952 break;
953 }
954
955 status = g_TcFunctions.PacketsBufferQueryNextPacket(pt->TcPacketsBuffer, &tcHeader, &data);
956
957 if (status == TC_ERROR_END_OF_BUFFER)
958 {
959 g_TcFunctions.PacketsBufferDestroy(pt->TcPacketsBuffer);
960 pt->TcPacketsBuffer = NULL;
961 break;
962 }
963
964 if (status != TC_SUCCESS)
965 {
966 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "read error, TcPacketsBufferQueryNextPacket failure: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
967 return -1;
968 }
969
970 /* No underlaying filtering system. We need to filter on our own */
971 if (p->fcode.bf_insns)
972 {
973 filterResult = pcap_filter(p->fcode.bf_insns, data, tcHeader.Length, tcHeader.CapturedLength);
974
975 if (filterResult == 0)
976 {
977 continue;
978 }
979
980 if (filterResult > tcHeader.CapturedLength)
981 {
982 filterResult = tcHeader.CapturedLength;
983 }
984 }
985 else
986 {
987 filterResult = tcHeader.CapturedLength;
988 }
989
990 pt->TcAcceptedCount ++;
991
992 hdr.ts.tv_sec = (bpf_u_int32)(tcHeader.Timestamp / (ULONGLONG)(1000 * 1000 * 1000));
993 hdr.ts.tv_usec = (bpf_u_int32)((tcHeader.Timestamp % (ULONGLONG)(1000 * 1000 * 1000)) / 1000);
994
995 if (p->linktype == DLT_EN10MB)
996 {
997 hdr.caplen = filterResult;
998 hdr.len = tcHeader.Length;
999 (*callback)(user, &hdr, data);
1000 }
1001 else
1002 {
1003 PPPI_HEADER pPpiHeader = (PPPI_HEADER)pt->PpiPacket;
1004 PVOID data2 = pPpiHeader + 1;
1005
1006 pPpiHeader->AggregationField.InterfaceId = TC_PH_FLAGS_RX_PORT_ID(tcHeader.Flags);
1007 pPpiHeader->Dot3Field.Errors = tcHeader.Errors;
1008 if (tcHeader.Flags & TC_PH_FLAGS_CHECKSUM)
1009 {
1010 pPpiHeader->Dot3Field.Flags = PPI_FLD_802_3_EXT_FLAG_FCS_PRESENT;
1011 }
1012 else
1013 {
1014 pPpiHeader->Dot3Field.Flags = 0;
1015 }
1016
1017 if (filterResult <= MAX_TC_PACKET_SIZE)
1018 {
1019 memcpy(data2, data, filterResult);
1020 hdr.caplen = sizeof(PPI_HEADER) + filterResult;
1021 hdr.len = sizeof(PPI_HEADER) + tcHeader.Length;
1022 }
1023 else
1024 {
1025 memcpy(data2, data, MAX_TC_PACKET_SIZE);
1026 hdr.caplen = sizeof(PPI_HEADER) + MAX_TC_PACKET_SIZE;
1027 hdr.len = sizeof(PPI_HEADER) + tcHeader.Length;
1028 }
1029
1030 (*callback)(user, &hdr, pt->PpiPacket);
1031
1032 }
1033
1034 if (++n >= cnt && cnt > 0)
1035 {
1036 return n;
1037 }
1038 }
1039
1040 return n;
1041 }
1042
1043 static int
1044 TcStats(pcap_t *p, struct pcap_stat *ps)
1045 {
1046 struct pcap_tc *pt = p->priv;
1047 TC_STATISTICS statistics;
1048 TC_STATUS status;
1049 ULONGLONG counter;
1050 struct pcap_stat s;
1051
1052 status = g_TcFunctions.InstanceQueryStatistics(pt->TcInstance, &statistics);
1053
1054 if (status != TC_SUCCESS)
1055 {
1056 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error in TcInstanceQueryStatistics: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1057 return -1;
1058 }
1059
1060 memset(&s, 0, sizeof(s));
1061
1062 status = g_TcFunctions.StatisticsQueryValue(statistics, TC_COUNTER_INSTANCE_TOTAL_RX_PACKETS, &counter);
1063 if (status != TC_SUCCESS)
1064 {
1065 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error in TcStatisticsQueryValue: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1066 return -1;
1067 }
1068 if (counter <= (ULONGLONG)0xFFFFFFFF)
1069 {
1070 s.ps_recv = (ULONG)counter;
1071 }
1072 else
1073 {
1074 s.ps_recv = 0xFFFFFFFF;
1075 }
1076
1077 status = g_TcFunctions.StatisticsQueryValue(statistics, TC_COUNTER_INSTANCE_RX_DROPPED_PACKETS, &counter);
1078 if (status != TC_SUCCESS)
1079 {
1080 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error in TcStatisticsQueryValue: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1081 return -1;
1082 }
1083 if (counter <= (ULONGLONG)0xFFFFFFFF)
1084 {
1085 s.ps_ifdrop = (ULONG)counter;
1086 s.ps_drop = (ULONG)counter;
1087 }
1088 else
1089 {
1090 s.ps_ifdrop = 0xFFFFFFFF;
1091 s.ps_drop = 0xFFFFFFFF;
1092 }
1093
1094 #if defined(_WIN32) && defined(ENABLE_REMOTE)
1095 s.ps_capt = pt->TcAcceptedCount;
1096 #endif
1097 *ps = s;
1098
1099 return 0;
1100 }
1101
1102
1103 /*
1104 * We filter at user level, since the kernel driver does't process the packets
1105 */
1106 static int
1107 TcSetFilter(pcap_t *p, struct bpf_program *fp)
1108 {
1109 if(!fp)
1110 {
1111 strncpy(p->errbuf, "setfilter: No filter specified", sizeof(p->errbuf));
1112 return -1;
1113 }
1114
1115 /* Install a user level filter */
1116 if (install_bpf_program(p, fp) < 0)
1117 {
1118 return -1;
1119 }
1120
1121 return 0;
1122 }
1123
1124 #ifdef _WIN32
1125 static struct pcap_stat *
1126 TcStatsEx(pcap_t *p, int *pcap_stat_size)
1127 {
1128 struct pcap_tc *pt = p->priv;
1129 TC_STATISTICS statistics;
1130 TC_STATUS status;
1131 ULONGLONG counter;
1132
1133 *pcap_stat_size = sizeof (p->stat);
1134
1135 status = g_TcFunctions.InstanceQueryStatistics(pt->TcInstance, &statistics);
1136
1137 if (status != TC_SUCCESS)
1138 {
1139 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error in TcInstanceQueryStatistics: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1140 return NULL;
1141 }
1142
1143 memset(&p->stat, 0, sizeof(p->stat));
1144
1145 status = g_TcFunctions.StatisticsQueryValue(statistics, TC_COUNTER_INSTANCE_TOTAL_RX_PACKETS, &counter);
1146 if (status != TC_SUCCESS)
1147 {
1148 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error in TcStatisticsQueryValue: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1149 return NULL;
1150 }
1151 if (counter <= (ULONGLONG)0xFFFFFFFF)
1152 {
1153 p->stat.ps_recv = (ULONG)counter;
1154 }
1155 else
1156 {
1157 p->stat.ps_recv = 0xFFFFFFFF;
1158 }
1159
1160 status = g_TcFunctions.StatisticsQueryValue(statistics, TC_COUNTER_INSTANCE_RX_DROPPED_PACKETS, &counter);
1161 if (status != TC_SUCCESS)
1162 {
1163 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error in TcStatisticsQueryValue: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1164 return NULL;
1165 }
1166 if (counter <= (ULONGLONG)0xFFFFFFFF)
1167 {
1168 p->stat.ps_ifdrop = (ULONG)counter;
1169 p->stat.ps_drop = (ULONG)counter;
1170 }
1171 else
1172 {
1173 p->stat.ps_ifdrop = 0xFFFFFFFF;
1174 p->stat.ps_drop = 0xFFFFFFFF;
1175 }
1176
1177 #if defined(_WIN32) && defined(ENABLE_REMOTE)
1178 p->stat.ps_capt = pt->TcAcceptedCount;
1179 #endif
1180
1181 return &p->stat;
1182 }
1183
1184 /* Set the dimension of the kernel-level capture buffer */
1185 static int
1186 TcSetBuff(pcap_t *p, int dim)
1187 {
1188 /*
1189 * XXX turbocap has an internal way of managing buffers.
1190 * And at the moment it's not configurable, so we just
1191 * silently ignore the request to set the buffer.
1192 */
1193 return 0;
1194 }
1195
1196 static int
1197 TcSetMode(pcap_t *p, int mode)
1198 {
1199 if (mode != MODE_CAPT)
1200 {
1201 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Mode %u not supported by TurboCap devices. TurboCap only supports capture.", mode);
1202 return -1;
1203 }
1204
1205 return 0;
1206 }
1207
1208 static int
1209 TcSetMinToCopy(pcap_t *p, int size)
1210 {
1211 struct pcap_tc *pt = p->priv;
1212 TC_STATUS status;
1213
1214 if (size < 0)
1215 {
1216 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "Mintocopy cannot be less than 0.");
1217 return -1;
1218 }
1219
1220 status = g_TcFunctions.InstanceSetFeature(pt->TcInstance, TC_INST_FT_MINTOCOPY, (ULONG)size);
1221
1222 if (status != TC_SUCCESS)
1223 {
1224 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "TurboCap error setting the mintocopy: %s (%08x)", g_TcFunctions.StatusGetString(status), status);
1225 }
1226
1227 return 0;
1228 }
1229
1230 static HANDLE
1231 TcGetReceiveWaitHandle(pcap_t *p)
1232 {
1233 struct pcap_tc *pt = p->priv;
1234
1235 return g_TcFunctions.InstanceGetReceiveWaitHandle(pt->TcInstance);
1236 }
1237
1238 static int
1239 TcOidGetRequest(pcap_t *p, bpf_u_int32 oid _U_, void *data _U_, size_t *lenp _U_)
1240 {
1241 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1242 "An OID get request cannot be performed on a TurboCap device");
1243 return PCAP_ERROR;
1244 }
1245
1246 static int
1247 TcOidSetRequest(pcap_t *p, bpf_u_int32 oid _U_, const void *data _U_,
1248 size_t *lenp _U_)
1249 {
1250 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1251 "An OID set request cannot be performed on a TurboCap device");
1252 return PCAP_ERROR;
1253 }
1254
1255 static u_int
1256 TcSendqueueTransmit(pcap_t *p, pcap_send_queue *queue _U_, int sync _U_)
1257 {
1258 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1259 "Packets cannot be bulk transmitted on a TurboCap device");
1260 return 0;
1261 }
1262
1263 static int
1264 TcSetUserBuffer(pcap_t *p, int size _U_)
1265 {
1266 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1267 "The user buffer cannot be set on a TurboCap device");
1268 return -1;
1269 }
1270
1271 static int
1272 TcLiveDump(pcap_t *p, char *filename _U_, int maxsize _U_, int maxpacks _U_)
1273 {
1274 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1275 "Live packet dumping cannot be performed on a TurboCap device");
1276 return -1;
1277 }
1278
1279 static int
1280 TcLiveDumpEnded(pcap_t *p, int sync _U_)
1281 {
1282 pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
1283 "Live packet dumping cannot be performed on a TurboCap device");
1284 return -1;
1285 }
1286
1287 static PAirpcapHandle
1288 TcGetAirPcapHandle(pcap_t *p _U_)
1289 {
1290 return NULL;
1291 }
1292 #endif
[mirror] the LIBpcap interface to various kernel packet capture mechanism