AudioTestService.cpp@ 90918

Last change on this file since 90918 was 90918, checked in by vboxsync, 3 years ago
Audio/Validation Kit: Simplified ATS init / destruction handling. bugref:10008
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1	/* $Id: AudioTestService.cpp 90918 2021-08-26 15:29:25Z vboxsync $ */
2	/** @file
3	* AudioTestService - Audio test execution server.
4	*/
5
6	/*
7	* Copyright (C) 2021 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_AUDIO_TEST
23	#include <iprt/log.h>
24
25	#include <iprt/alloca.h>
26	#include <iprt/asm.h>
27	#include <iprt/assert.h>
28	#include <iprt/critsect.h>
29	#include <iprt/crc.h>
30	#include <iprt/ctype.h>
31	#include <iprt/dir.h>
32	#include <iprt/env.h>
33	#include <iprt/err.h>
34	#include <iprt/file.h>
35	#include <iprt/getopt.h>
36	#include <iprt/handle.h>
37	#include <iprt/initterm.h>
38	#include <iprt/json.h>
39	#include <iprt/list.h>
40	#include <iprt/mem.h>
41	#include <iprt/message.h>
42	#include <iprt/param.h>
43	#include <iprt/path.h>
44	#include <iprt/pipe.h>
45	#include <iprt/poll.h>
46	#include <iprt/process.h>
47	#include <iprt/stream.h>
48	#include <iprt/string.h>
49	#include <iprt/thread.h>
50
51	#include <VBox/log.h>
52
53	#include "AudioTestService.h"
54	#include "AudioTestServiceInternal.h"
55
56
57	/*********************************************************************************************************************************
58	* Structures and Typedefs *
59	*********************************************************************************************************************************/
60	/**
61	* A generic ATS reply, used by the client
62	* to process the incoming packets.
63	*/
64	typedef struct ATSSRVREPLY
65	{
66	char szOp[ATSPKT_OPCODE_MAX_LEN];
67	void *pvPayload;
68	size_t cbPayload;
69	} ATSSRVREPLY;
70	/** Pointer to a generic ATS reply. */
71	typedef struct ATSSRVREPLY *PATSSRVREPLY;
72
73
74	/*********************************************************************************************************************************
75	* Global Variables *
76	*********************************************************************************************************************************/
77	/**
78	* Transport layers.
79	*/
80	const PCATSTRANSPORT g_apTransports[] =
81	{
82	&g_TcpTransport
83	};
84	/** Number of transport layers in \a g_apTransports. */
85	const size_t g_cTransports = RT_ELEMENTS(g_apTransports);
86
87	/**
88	* ATS client state.
89	*/
90	typedef enum ATSCLIENTSTATE
91	{
92	/** Invalid client state. */
93	ATSCLIENTSTATE_INVALID = 0,
94	/** Client is initialising, only the HOWDY and BYE packets are allowed. */
95	ATSCLIENTSTATE_INITIALISING,
96	/** Client is in fully cuntional state and ready to process all requests. */
97	ATSCLIENTSTATE_READY,
98	/** Client is destroying. */
99	ATSCLIENTSTATE_DESTROYING,
100	/** 32bit hack. */
101	ATSCLIENTSTATE_32BIT_HACK = 0x7fffffff
102	} ATSCLIENTSTATE;
103
104	/**
105	* ATS client instance.
106	*/
107	typedef struct ATSCLIENTINST
108	{
109	/** List node for new clients. */
110	RTLISTNODE NdLst;
111	/** The current client state. */
112	ATSCLIENTSTATE enmState;
113	/** Transport backend specific data. */
114	PATSTRANSPORTCLIENT pTransportClient;
115	/** Client hostname. */
116	char *pszHostname;
117	} ATSCLIENTINST;
118	/** Pointer to a ATS client instance. */
119	typedef ATSCLIENTINST *PATSCLIENTINST;
120
121
122	/*********************************************************************************************************************************
123	* Prototypes *
124	*********************************************************************************************************************************/
125	static int atsClientDisconnect(PATSSERVER pThis, PATSCLIENTINST pInst);
126
127
128
129	/**
130	* Returns the string represenation of the given state.
131	*/
132	static const char *atsClientStateStringify(ATSCLIENTSTATE enmState)
133	{
134	switch (enmState)
135	{
136	case ATSCLIENTSTATE_INVALID:
137	return "INVALID";
138	case ATSCLIENTSTATE_INITIALISING:
139	return "INITIALISING";
140	case ATSCLIENTSTATE_READY:
141	return "READY";
142	case ATSCLIENTSTATE_DESTROYING:
143	return "DESTROYING";
144	case ATSCLIENTSTATE_32BIT_HACK:
145	default:
146	break;
147	}
148
149	AssertMsgFailed(("Unknown state %#x\n", enmState));
150	return "UNKNOWN";
151	}
152
153	/**
154	* Calculates the checksum value, zero any padding space and send the packet.
155	*
156	* @returns IPRT status code.
157	* @param pThis The ATS instance.
158	* @param pInst The ATS client structure.
159	* @param pPkt The packet to send. Must point to a correctly
160	* aligned buffer.
161	*/
162	static int atsSendPkt(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPkt)
163	{
164	Assert(pPkt->cb >= sizeof(*pPkt));
165	pPkt->uCrc32 = RTCrc32(pPkt->achOpcode, pPkt->cb - RT_UOFFSETOF(ATSPKTHDR, achOpcode));
166	if (pPkt->cb != RT_ALIGN_32(pPkt->cb, ATSPKT_ALIGNMENT))
167	memset((uint8_t *)pPkt + pPkt->cb, '\0', RT_ALIGN_32(pPkt->cb, ATSPKT_ALIGNMENT) - pPkt->cb);
168
169	LogFlowFunc(("cb=%RU32 (%#x), payload=%RU32 (%#x), opcode=%.8s\n",
170	pPkt->cb, pPkt->cb, pPkt->cb - sizeof(ATSPKTHDR), pPkt->cb - sizeof(ATSPKTHDR), pPkt->achOpcode));
171	int rc = pThis->pTransport->pfnSendPkt(pThis->pTransportInst, pInst->pTransportClient, pPkt);
172	while (RT_UNLIKELY(rc == VERR_INTERRUPTED) && !pThis->fTerminate)
173	rc = pThis->pTransport->pfnSendPkt(pThis->pTransportInst, pInst->pTransportClient, pPkt);
174
175	return rc;
176	}
177
178	/**
179	* Sends a babble reply and disconnects the client (if applicable).
180	*
181	* @param pThis The ATS instance.
182	* @param pInst The ATS server instance.
183	* @param pszOpcode The BABBLE opcode.
184	*/
185	static void atsReplyBabble(PATSSERVER pThis, PATSCLIENTINST pInst, const char *pszOpcode)
186	{
187	ATSPKTHDR Reply;
188	Reply.cb = sizeof(Reply);
189	Reply.uCrc32 = 0;
190	memcpy(Reply.achOpcode, pszOpcode, sizeof(Reply.achOpcode));
191
192	pThis->pTransport->pfnBabble(pThis->pTransportInst, pInst->pTransportClient, &Reply, 20*1000);
193	}
194
195	/**
196	* Receive and validate a packet.
197	*
198	* Will send bable responses to malformed packets that results in a error status
199	* code.
200	*
201	* @returns IPRT status code.
202	* @param pThis The ATS instance.
203	* @param pInst The opaque ATS instance structure.
204	* @param ppPktHdr Where to return the packet on success. Free
205	* with RTMemFree.
206	* @param fAutoRetryOnFailure Whether to retry on error.
207	*/
208	static int atsRecvPkt(PATSSERVER pThis, PATSCLIENTINST pInst, PPATSPKTHDR ppPktHdr, bool fAutoRetryOnFailure)
209	{
210	for (;;)
211	{
212	PATSPKTHDR pPktHdr;
213	int rc = pThis->pTransport->pfnRecvPkt(pThis->pTransportInst, pInst->pTransportClient, &pPktHdr);
214	if (RT_SUCCESS(rc))
215	{
216	/* validate the packet. */
217	if ( pPktHdr->cb >= sizeof(ATSPKTHDR)
218	&& pPktHdr->cb < ATSPKT_MAX_SIZE)
219	{
220	Log2Func(("pPktHdr=%p cb=%#x crc32=%#x opcode=%.8s\n",
221	pPktHdr, pPktHdr->cb, pPktHdr->uCrc32, pPktHdr->achOpcode));
222	uint32_t uCrc32Calc = pPktHdr->uCrc32 != 0
223	? RTCrc32(&pPktHdr->achOpcode[0], pPktHdr->cb - RT_UOFFSETOF(ATSPKTHDR, achOpcode))
224	: 0;
225	if (pPktHdr->uCrc32 == uCrc32Calc)
226	{
227	AssertCompileMemberSize(ATSPKTHDR, achOpcode, 8);
228	if ( RT_C_IS_UPPER(pPktHdr->achOpcode[0])
229	&& RT_C_IS_UPPER(pPktHdr->achOpcode[1])
230	&& (RT_C_IS_UPPER(pPktHdr->achOpcode[2]) \|\| pPktHdr->achOpcode[2] == ' ')
231	&& (RT_C_IS_PRINT(pPktHdr->achOpcode[3]) \|\| pPktHdr->achOpcode[3] == ' ')
232	&& (RT_C_IS_PRINT(pPktHdr->achOpcode[4]) \|\| pPktHdr->achOpcode[4] == ' ')
233	&& (RT_C_IS_PRINT(pPktHdr->achOpcode[5]) \|\| pPktHdr->achOpcode[5] == ' ')
234	&& (RT_C_IS_PRINT(pPktHdr->achOpcode[6]) \|\| pPktHdr->achOpcode[6] == ' ')
235	&& (RT_C_IS_PRINT(pPktHdr->achOpcode[7]) \|\| pPktHdr->achOpcode[7] == ' ')
236	)
237	{
238	Log(("cb=%#x opcode=%.8s\n", pPktHdr->cb, pPktHdr->achOpcode));
239	*ppPktHdr = pPktHdr;
240	return rc;
241	}
242
243	rc = VERR_IO_BAD_COMMAND;
244	}
245	else
246	{
247	Log(("cb=%#x opcode=%.8s crc32=%#x actual=%#x\n",
248	pPktHdr->cb, pPktHdr->achOpcode, pPktHdr->uCrc32, uCrc32Calc));
249	rc = VERR_IO_CRC;
250	}
251	}
252	else
253	rc = VERR_IO_BAD_LENGTH;
254
255	/* Send babble reply and disconnect the client if the transport is
256	connection oriented. */
257	if (rc == VERR_IO_BAD_LENGTH)
258	atsReplyBabble(pThis, pInst, "BABBLE L");
259	else if (rc == VERR_IO_CRC)
260	atsReplyBabble(pThis, pInst, "BABBLE C");
261	else if (rc == VERR_IO_BAD_COMMAND)
262	atsReplyBabble(pThis, pInst, "BABBLE O");
263	else
264	atsReplyBabble(pThis, pInst, "BABBLE ");
265	RTMemFree(pPktHdr);
266	}
267
268	/* Try again or return failure? */
269	if ( pThis->fTerminate
270	\|\| rc != VERR_INTERRUPTED
271	\|\| !fAutoRetryOnFailure
272	)
273	{
274	Log(("rc=%Rrc\n", rc));
275	return rc;
276	}
277	}
278	}
279
280	/**
281	* Make a simple reply, only status opcode.
282	*
283	* @returns IPRT status code of the send.
284	* @param pThis The ATS instance.
285	* @param pInst The opaque ATS instance structure.
286	* @param pReply The reply packet.
287	* @param pszOpcode The status opcode. Exactly 8 chars long, padd
288	* with space.
289	* @param cbExtra Bytes in addition to the header.
290	*/
291	static int atsReplyInternal(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pReply, const char *pszOpcode, size_t cbExtra)
292	{
293	/* copy the opcode, don't be too strict in case of a padding screw up. */
294	size_t cchOpcode = strlen(pszOpcode);
295	if (RT_LIKELY(cchOpcode == sizeof(pReply->achOpcode)))
296	memcpy(pReply->achOpcode, pszOpcode, sizeof(pReply->achOpcode));
297	else
298	{
299	Assert(cchOpcode == sizeof(pReply->achOpcode));
300	while (cchOpcode > 0 && pszOpcode[cchOpcode - 1] == ' ')
301	cchOpcode--;
302	AssertMsgReturn(cchOpcode < sizeof(pReply->achOpcode), ("%d/'%.8s'\n", cchOpcode, pszOpcode), VERR_INTERNAL_ERROR_4);
303	memcpy(pReply->achOpcode, pszOpcode, cchOpcode);
304	memset(&pReply->achOpcode[cchOpcode], ' ', sizeof(pReply->achOpcode) - cchOpcode);
305	}
306
307	pReply->cb = (uint32_t)sizeof(ATSPKTHDR) + (uint32_t)cbExtra;
308	pReply->uCrc32 = 0;
309
310	return atsSendPkt(pThis, pInst, pReply);
311	}
312
313	/**
314	* Make a simple reply, only status opcode.
315	*
316	* @returns IPRT status code of the send.
317	* @param pThis The ATS instance.
318	* @param pInst The opaque ATS instance structure.
319	* @param pPktHdr The original packet (for future use).
320	* @param pszOpcode The status opcode. Exactly 8 chars long, padd
321	* with space.
322	*/
323	static int atsReplySimple(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr, const char *pszOpcode)
324	{
325	return atsReplyInternal(pThis, pInst, pPktHdr, pszOpcode, 0);
326	}
327
328	/**
329	* Acknowledges a packet with success.
330	*
331	* @returns IPRT status code of the send.
332	* @param pThis The ATS instance.
333	* @param pInst The opaque ATS instance structure.
334	* @param pPktHdr The original packet (for future use).
335	*/
336	static int atsReplyAck(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
337	{
338	return atsReplySimple(pThis, pInst, pPktHdr, "ACK ");
339	}
340
341	/**
342	* Replies with a failure.
343	*
344	* @returns IPRT status code of the send.
345	* @param pThis The ATS instance.
346	* @param pInst The opaque ATS instance structure.
347	* @param pPktHdr The original packet (for future use).
348	* @param pszOpcode The status opcode. Exactly 8 chars long, padd
349	* with space.
350	* @param rcReq The status code of the request.
351	* @param pszDetailFmt Longer description of the problem (format string).
352	* @param va Format arguments.
353	*/
354	static int atsReplyFailureV(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr,
355	const char pszOpcode, int rcReq, const char pszDetailFmt, va_list va)
356	{
357	RT_NOREF(pPktHdr);
358	union
359	{
360	ATSPKTHDR Hdr;
361	int rc;
362	char ach[256];
363	} uPkt;
364	RT_ZERO(uPkt);
365
366	size_t cchDetail = RTStrPrintfV(&uPkt.ach[sizeof(ATSPKTHDR)],
367	sizeof(uPkt) - sizeof(ATSPKTHDR),
368	pszDetailFmt, va);
369
370	uPkt.rc = rcReq;
371
372	return atsReplyInternal(pThis, pInst, &uPkt.Hdr, pszOpcode, sizeof(int) + cchDetail + 1);
373	}
374
375	/**
376	* Replies with a failure.
377	*
378	* @returns IPRT status code of the send.
379	* @param pThis The ATS instance.
380	* @param pInst The opaque ATS instance structure.
381	* @param pPktHdr The original packet (for future use).
382	* @param pszOpcode The status opcode. Exactly 8 chars long, padd
383	* with space.
384	* @param rcReq Status code.
385	* @param pszDetailFmt Longer description of the problem (format string).
386	* @param ... Format arguments.
387	*/
388	static int atsReplyFailure(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr,
389	const char pszOpcode, int rcReq, const char pszDetailFmt, ...)
390	{
391	va_list va;
392	va_start(va, pszDetailFmt);
393	int rc = atsReplyFailureV(pThis, pInst, pPktHdr, pszOpcode, rcReq, pszDetailFmt, va);
394	va_end(va);
395	return rc;
396	}
397
398	/**
399	* Replies according to the return code.
400	*
401	* @returns IPRT status code of the send.
402	* @param pThis The ATS instance.
403	* @param pInst The opaque ATS instance structure.
404	* @param pPktHdr The packet to reply to.
405	* @param rcOperation The status code to report.
406	* @param pszOperationFmt The operation that failed. Typically giving the
407	* function call with important arguments.
408	* @param ... Arguments to the format string.
409	*/
410	static int atsReplyRC(PATSSERVER pThis,
411	PATSCLIENTINST pInst, PATSPKTHDR pPktHdr, int rcOperation, const char *pszOperationFmt, ...)
412	{
413	if (RT_SUCCESS(rcOperation))
414	return atsReplyAck(pThis, pInst, pPktHdr);
415
416	char szOperation[128];
417	va_list va;
418	va_start(va, pszOperationFmt);
419	RTStrPrintfV(szOperation, sizeof(szOperation), pszOperationFmt, va);
420	va_end(va);
421
422	return atsReplyFailure(pThis, pInst, pPktHdr, "FAILED ", rcOperation, "%s failed with rc=%Rrc (opcode '%.8s')",
423	szOperation, rcOperation, pPktHdr->achOpcode);
424	}
425
426	/**
427	* Signal a bad packet exact size.
428	*
429	* @returns IPRT status code of the send.
430	* @param pThis The ATS instance.
431	* @param pInst The opaque ATS instance structure.
432	* @param pPktHdr The packet to reply to.
433	* @param cb The wanted size.
434	*/
435	static int atsReplyBadSize(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr, size_t cb)
436	{
437	return atsReplyFailure(pThis, pInst, pPktHdr, "BAD SIZE", VERR_INVALID_PARAMETER, "Expected at %zu bytes, got %u (opcode '%.8s')",
438	cb, pPktHdr->cb, pPktHdr->achOpcode);
439	}
440
441	/**
442	* Deals with a unknown command.
443	*
444	* @returns IPRT status code of the send.
445	* @param pThis The ATS instance.
446	* @param pInst The opaque ATS instance structure.
447	* @param pPktHdr The packet to reply to.
448	*/
449	static int atsReplyUnknown(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
450	{
451	return atsReplyFailure(pThis, pInst, pPktHdr, "UNKNOWN ", VERR_NOT_FOUND, "Opcode '%.8s' is not known", pPktHdr->achOpcode);
452	}
453
454	/**
455	* Deals with a command sent in an invalid client state.
456	*
457	* @returns IPRT status code of the send.
458	* @param pThis The ATS instance.
459	* @param pInst The opaque ATS instance structure.
460	* @param pPktHdr The packet containing the unterminated string.
461	*/
462	static int atsReplyInvalidState(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
463	{
464	return atsReplyFailure(pThis, pInst, pPktHdr, "INVSTATE", VERR_INVALID_STATE, "Opcode '%.8s' is not supported at client state '%s",
465	pPktHdr->achOpcode, atsClientStateStringify(pInst->enmState));
466	}
467
468	/**
469	* Verifies and acknowledges a "BYE" request.
470	*
471	* @returns IPRT status code.
472	* @param pThis The ATS instance.
473	* @param pInst The opaque ATS instance structure.
474	* @param pPktHdr The bye packet.
475	*/
476	static int atsDoBye(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
477	{
478	int rc;
479	if (pPktHdr->cb == sizeof(ATSPKTHDR))
480	{
481	if (pThis->Callbacks.pfnBye)
482	{
483	rc = pThis->Callbacks.pfnBye(pThis->Callbacks.pvUser);
484	}
485	else
486	rc = VINF_SUCCESS;
487
488	if (RT_SUCCESS(rc))
489	{
490	rc = atsReplyAck(pThis, pInst, pPktHdr);
491	}
492	else
493	rc = atsReplyRC(pThis, pInst, pPktHdr, rc, "Disconnecting client failed");
494	}
495	else
496	rc = atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTHDR));
497	return rc;
498	}
499
500	/**
501	* Verifies and acknowledges a "HOWDY" request.
502	*
503	* @returns IPRT status code.
504	* @param pThis The ATS instance.
505	* @param pInst The opaque ATS instance structure.
506	* @param pPktHdr The howdy packet.
507	*/
508	static int atsDoHowdy(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
509	{
510	int rc = VINF_SUCCESS;
511
512	if (pPktHdr->cb != sizeof(ATSPKTREQHOWDY))
513	return atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTREQHOWDY));
514
515	if (pInst->enmState != ATSCLIENTSTATE_INITIALISING)
516	return atsReplyInvalidState(pThis, pInst, pPktHdr);
517
518	PATSPKTREQHOWDY pReq = (PATSPKTREQHOWDY)pPktHdr;
519
520	if (pReq->uVersion != ATS_PROTOCOL_VS)
521	return atsReplyRC(pThis, pInst, pPktHdr, VERR_VERSION_MISMATCH, "The given version %#x is not supported", pReq->uVersion);
522
523	ATSPKTREPHOWDY Rep;
524	RT_ZERO(Rep);
525
526	Rep.uVersion = ATS_PROTOCOL_VS;
527
528	rc = atsReplyInternal(pThis, pInst, &Rep.Hdr, "ACK ", sizeof(Rep) - sizeof(ATSPKTHDR));
529	if (RT_SUCCESS(rc))
530	{
531	pThis->pTransport->pfnNotifyHowdy(pThis->pTransportInst, pInst->pTransportClient);
532
533	if (pThis->Callbacks.pfnHowdy)
534	rc = pThis->Callbacks.pfnHowdy(pThis->Callbacks.pvUser);
535
536	if (RT_SUCCESS(rc))
537	pInst->enmState = ATSCLIENTSTATE_READY;
538	}
539
540	return rc;
541	}
542
543	/**
544	* Verifies and acknowledges a "TSET BEG" request.
545	*
546	* @returns IPRT status code.
547	* @param pThis The ATS instance.
548	* @param pInst The opaque ATS instance structure.
549	* @param pPktHdr The test set begin packet.
550	*/
551	static int atsDoTestSetBegin(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
552	{
553	if (pPktHdr->cb != sizeof(ATSPKTREQTSETBEG))
554	return atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTREQTSETBEG));
555
556	PATSPKTREQTSETBEG pReq = (PATSPKTREQTSETBEG)pPktHdr;
557
558	int rc = VINF_SUCCESS;
559
560	if (pThis->Callbacks.pfnTestSetBegin)
561	{
562	rc = pThis->Callbacks.pfnTestSetBegin(pThis->Callbacks.pvUser, pReq->szTag);
563	if (RT_FAILURE(rc))
564	return atsReplyRC(pThis, pInst, pPktHdr, rc, "Beginning test set '%s' failed", pReq->szTag);
565	}
566
567	if (RT_SUCCESS(rc))
568	{
569	rc = atsReplyAck(pThis, pInst, pPktHdr);
570	}
571	else
572	rc = atsReplyRC(pThis, pInst, pPktHdr, rc, "Beginning test set failed");
573
574	return rc;
575	}
576
577	/**
578	* Verifies and acknowledges a "TSET END" request.
579	*
580	* @returns IPRT status code.
581	* @param pThis The ATS instance.
582	* @param pInst The opaque ATS instance structure.
583	* @param pPktHdr The test set end packet.
584	*/
585	static int atsDoTestSetEnd(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
586	{
587	if (pPktHdr->cb != sizeof(ATSPKTREQTSETEND))
588	return atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTREQTSETEND));
589
590	PATSPKTREQTSETEND pReq = (PATSPKTREQTSETEND)pPktHdr;
591
592	int rc = VINF_SUCCESS;
593
594	if (pThis->Callbacks.pfnTestSetEnd)
595	{
596	rc = pThis->Callbacks.pfnTestSetEnd(pThis->Callbacks.pvUser, pReq->szTag);
597	if (RT_FAILURE(rc))
598	return atsReplyRC(pThis, pInst, pPktHdr, rc, "Ending test set '%s' failed", pReq->szTag);
599	}
600	if (RT_SUCCESS(rc))
601	{
602	rc = atsReplyAck(pThis, pInst, pPktHdr);
603	}
604	else
605	rc = atsReplyRC(pThis, pInst, pPktHdr, rc, "Ending test set failed");
606
607	return rc;
608	}
609
610	/**
611	* Used by atsDoTestSetSend to wait for a reply ACK from the client.
612	*
613	* @returns VINF_SUCCESS on ACK, VERR_GENERAL_FAILURE on NACK,
614	* VERR_NET_NOT_CONNECTED on unknown response (sending a bable reply),
615	* or whatever atsRecvPkt returns.
616	* @param pThis The ATS instance.
617	* @param pInst The opaque ATS instance structure.
618	* @param pPktHdr The original packet (for future use).
619	*/
620	static int atsWaitForAck(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
621	{
622	RT_NOREF(pPktHdr);
623	/** @todo timeout? */
624	PATSPKTHDR pReply;
625	int rc = atsRecvPkt(pThis, pInst, &pReply, false /fAutoRetryOnFailure/);
626	if (RT_SUCCESS(rc))
627	{
628	if (atsIsSameOpcode(pReply, "ACK"))
629	rc = VINF_SUCCESS;
630	else if (atsIsSameOpcode(pReply, "NACK"))
631	rc = VERR_GENERAL_FAILURE;
632	else
633	{
634	atsReplyBabble(pThis, pInst, "BABBLE ");
635	rc = VERR_NET_NOT_CONNECTED;
636	}
637	RTMemFree(pReply);
638	}
639	return rc;
640	}
641
642	/**
643	* Verifies and acknowledges a "TSET SND" request.
644	*
645	* @returns IPRT status code.
646	* @param pThis The ATS instance.
647	* @param pInst The opaque ATS instance structure.
648	* @param pPktHdr The test set end packet.
649	*/
650	static int atsDoTestSetSend(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
651	{
652	if (pPktHdr->cb != sizeof(ATSPKTREQTSETSND))
653	return atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTREQTSETSND));
654
655	PATSPKTREQTSETSND pReq = (PATSPKTREQTSETSND)pPktHdr;
656
657	int rc = VINF_SUCCESS;
658
659	if (!pThis->Callbacks.pfnTestSetSendRead)
660	return atsReplyRC(pThis, pInst, pPktHdr, VERR_NOT_SUPPORTED, "Sending test set not implemented");
661
662	if (pThis->Callbacks.pfnTestSetSendBegin)
663	{
664	rc = pThis->Callbacks.pfnTestSetSendBegin(pThis->Callbacks.pvUser, pReq->szTag);
665	if (RT_FAILURE(rc))
666	return atsReplyRC(pThis, pInst, pPktHdr, rc, "Beginning sending test set '%s' failed", pReq->szTag);
667	}
668
669	for (;;)
670	{
671	uint32_t uMyCrc32 = RTCrc32Start();
672	struct
673	{
674	ATSPKTHDR Hdr;
675	uint32_t uCrc32;
676	char ab[_64K];
677	char abPadding[ATSPKT_ALIGNMENT];
678	} Pkt;
679	#ifdef DEBUG
680	RT_ZERO(Pkt);
681	#endif
682	size_t cbRead = 0;
683	rc = pThis->Callbacks.pfnTestSetSendRead(pThis->Callbacks.pvUser, pReq->szTag, &Pkt.ab, sizeof(Pkt.ab), &cbRead);
684	if ( RT_FAILURE(rc)
685	\|\| cbRead == 0)
686	{
687	if ( rc == VERR_EOF
688	\|\| (RT_SUCCESS(rc) && cbRead == 0))
689	{
690	Pkt.uCrc32 = RTCrc32Finish(uMyCrc32);
691	rc = atsReplyInternal(pThis, pInst, &Pkt.Hdr, "DATA EOF", sizeof(uint32_t) /* uCrc32 */);
692	if (RT_SUCCESS(rc))
693	rc = atsWaitForAck(pThis, pInst, &Pkt.Hdr);
694	}
695	else
696	rc = atsReplyRC(pThis, pInst, pPktHdr, rc, "Sending data for test set '%s' failed", pReq->szTag);
697	break;
698	}
699
700	uMyCrc32 = RTCrc32Process(uMyCrc32, &Pkt.ab[0], cbRead);
701	Pkt.uCrc32 = RTCrc32Finish(uMyCrc32);
702
703	Log2Func(("cbRead=%zu -> uCrc32=%#x\n", cbRead, Pkt.uCrc32));
704
705	Assert(cbRead <= sizeof(Pkt.ab));
706
707	rc = atsReplyInternal(pThis, pInst, &Pkt.Hdr, "DATA ", sizeof(uint32_t) /* uCrc32 */ + cbRead);
708	if (RT_FAILURE(rc))
709	break;
710
711	rc = atsWaitForAck(pThis, pInst, &Pkt.Hdr);
712	if (RT_FAILURE(rc))
713	break;
714	}
715
716	if (pThis->Callbacks.pfnTestSetSendEnd)
717	{
718	int rc2 = pThis->Callbacks.pfnTestSetSendEnd(pThis->Callbacks.pvUser, pReq->szTag);
719	if (RT_FAILURE(rc2))
720	return atsReplyRC(pThis, pInst, pPktHdr, rc2, "Ending sending test set '%s' failed", pReq->szTag);
721	}
722
723	return rc;
724	}
725
726	/**
727	* Verifies and processes a "TN PLY" request.
728	*
729	* @returns IPRT status code.
730	* @param pThis The ATS instance.
731	* @param pInst The opaque ATS instance structure.
732	* @param pPktHdr The packet header.
733	*/
734	static int atsDoTonePlay(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
735	{
736	int rc = VINF_SUCCESS;
737
738	if (pPktHdr->cb < sizeof(ATSPKTREQTONEPLAY))
739	return atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTREQTONEPLAY));
740
741	if (pInst->enmState != ATSCLIENTSTATE_READY)
742	return atsReplyInvalidState(pThis, pInst, pPktHdr);
743
744	if (!pThis->Callbacks.pfnTonePlay)
745	return atsReplyRC(pThis, pInst, pPktHdr, VERR_NOT_SUPPORTED, "Playing tones not supported");
746
747	PATSPKTREQTONEPLAY pReq = (PATSPKTREQTONEPLAY)pPktHdr;
748	rc = pThis->Callbacks.pfnTonePlay(pThis->Callbacks.pvUser, &pReq->ToneParms);
749
750	int rc2 = atsReplyAck(pThis, pInst, pPktHdr);
751	if (RT_SUCCESS(rc))
752	rc = rc2;
753
754	return rc;
755	}
756
757	/**
758	* Verifies and processes a "TN REC" request.
759	*
760	* @returns IPRT status code.
761	* @param pThis The ATS instance.
762	* @param pInst The opaque ATS instance structure.
763	* @param pPktHdr The packet header.
764	*/
765	static int atsDoToneRecord(PATSSERVER pThis, PATSCLIENTINST pInst, PATSPKTHDR pPktHdr)
766	{
767	int rc = VINF_SUCCESS;
768
769	if (pPktHdr->cb < sizeof(ATSPKTREQTONEREC))
770	return atsReplyBadSize(pThis, pInst, pPktHdr, sizeof(ATSPKTREQTONEREC));
771
772	if (pInst->enmState != ATSCLIENTSTATE_READY)
773	return atsReplyInvalidState(pThis, pInst, pPktHdr);
774
775	if (!pThis->Callbacks.pfnToneRecord)
776	return atsReplyRC(pThis, pInst, pPktHdr, VERR_NOT_SUPPORTED, "Recording tones not supported");
777
778	PATSPKTREQTONEREC pReq = (PATSPKTREQTONEREC)pPktHdr;
779	rc = pThis->Callbacks.pfnToneRecord(pThis->Callbacks.pvUser, &pReq->ToneParms);
780
781	int rc2 = atsReplyAck(pThis, pInst, pPktHdr);
782	if (RT_SUCCESS(rc))
783	rc = rc2;
784
785	return rc;
786	}
787
788	/**
789	* Main request processing routine for each client.
790	*
791	* @returns IPRT status code.
792	* @param pThis The ATS instance.
793	* @param pInst The ATS client structure sending the request.
794	* @param pfDisconnect Where to return whether to disconnect the client on success or not.
795	*/
796	static int atsClientReqProcess(PATSSERVER pThis, PATSCLIENTINST pInst, bool *pfDisconnect)
797	{
798	/*
799	* Read client command packet and process it.
800	*/
801	PATSPKTHDR pPktHdr = NULL;
802	int rc = atsRecvPkt(pThis, pInst, &pPktHdr, true /fAutoRetryOnFailure/);
803	if (RT_FAILURE(rc))
804	return rc;
805
806	/*
807	* Do a string switch on the opcode bit.
808	*/
809	/* Connection: */
810	if ( atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_HOWDY))
811	rc = atsDoHowdy(pThis, pInst, pPktHdr);
812	else if (atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_BYE))
813	{
814	rc = atsDoBye(pThis, pInst, pPktHdr);
815	if (RT_SUCCESS(rc))
816	*pfDisconnect = true;
817	}
818	/* Test set handling: */
819	else if (atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_TESTSET_BEGIN))
820	rc = atsDoTestSetBegin(pThis, pInst, pPktHdr);
821	else if (atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_TESTSET_END))
822	rc = atsDoTestSetEnd(pThis, pInst, pPktHdr);
823	else if (atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_TESTSET_SEND))
824	rc = atsDoTestSetSend(pThis, pInst, pPktHdr);
825	/* Audio testing: */
826	else if (atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_TONE_PLAY))
827	rc = atsDoTonePlay(pThis, pInst, pPktHdr);
828	else if (atsIsSameOpcode(pPktHdr, ATSPKT_OPCODE_TONE_RECORD))
829	rc = atsDoToneRecord(pThis, pInst, pPktHdr);
830	/* Misc: */
831	else
832	rc = atsReplyUnknown(pThis, pInst, pPktHdr);
833
834	RTMemFree(pPktHdr);
835
836	return rc;
837	}
838
839	static int atsClientDisconnect(PATSSERVER pThis, PATSCLIENTINST pInst)
840	{
841	AssertReturn(pInst->enmState != ATSCLIENTSTATE_DESTROYING, VERR_WRONG_ORDER);
842
843	pInst->enmState = ATSCLIENTSTATE_DESTROYING;
844	pThis->pTransport->pfnNotifyBye(pThis->pTransportInst, pInst->pTransportClient);
845
846	return VINF_SUCCESS;
847	}
848
849	/**
850	* Free's (destroys) a client instance.
851	*
852	* @returns nothing.
853	* @param pInst The opaque ATS instance structure.
854	*/
855	static void atsClientFree(PATSCLIENTINST pInst)
856	{
857	if (pInst->pszHostname)
858	RTStrFree(pInst->pszHostname);
859	RTMemFree(pInst);
860	}
861
862	/**
863	* The main thread worker serving the clients.
864	*/
865	static DECLCALLBACK(int) atsClientWorker(RTTHREAD hThread, void *pvUser)
866	{
867	RT_NOREF(hThread);
868
869	PATSSERVER pThis = (PATSSERVER)pvUser;
870	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
871
872	unsigned cClientsMax = 0;
873	unsigned cClientsCur = 0;
874	PATSCLIENTINST *papInsts = NULL;
875
876	/* Add the pipe to the poll set. */
877	int rc = RTPollSetAddPipe(pThis->hPollSet, pThis->hPipeR, RTPOLL_EVT_READ \| RTPOLL_EVT_ERROR, 0);
878	if (RT_SUCCESS(rc))
879	{
880	while (!pThis->fTerminate)
881	{
882	uint32_t fEvts;
883	uint32_t uId;
884	rc = RTPoll(pThis->hPollSet, RT_INDEFINITE_WAIT, &fEvts, &uId);
885	if (RT_SUCCESS(rc))
886	{
887	if (uId == 0)
888	{
889	if (fEvts & RTPOLL_EVT_ERROR)
890	break;
891
892	/* We got woken up because of a new client. */
893	Assert(fEvts & RTPOLL_EVT_READ);
894
895	uint8_t bRead;
896	size_t cbRead = 0;
897	rc = RTPipeRead(pThis->hPipeR, &bRead, 1, &cbRead);
898	AssertRC(rc);
899
900	RTCritSectEnter(&pThis->CritSectClients);
901	/* Walk the list and add all new clients. */
902	PATSCLIENTINST pIt, pItNext;
903	RTListForEachSafe(&pThis->LstClientsNew, pIt, pItNext, ATSCLIENTINST, NdLst)
904	{
905	RTListNodeRemove(&pIt->NdLst);
906	Assert(cClientsCur <= cClientsMax);
907	if (cClientsCur == cClientsMax)
908	{
909	/* Realloc to accommodate for the new clients. */
910	PATSCLIENTINST papInstsNew = (PATSCLIENTINST )RTMemReallocZ(papInsts, cClientsMax * sizeof(PATSCLIENTINST), (cClientsMax + 10) * sizeof(PATSCLIENTINST));
911	if (RT_LIKELY(papInstsNew))
912	{
913	cClientsMax += 10;
914	papInsts = papInstsNew;
915	}
916	}
917	if (cClientsCur < cClientsMax)
918	{
919	/* Find a free slot in the client array. */
920	unsigned idxSlt = 0;
921	while ( idxSlt < cClientsMax
922	&& papInsts[idxSlt] != NULL)
923	idxSlt++;
924
925	rc = pThis->pTransport->pfnPollSetAdd(pThis->pTransportInst, pThis->hPollSet, pIt->pTransportClient, idxSlt + 1);
926	if (RT_SUCCESS(rc))
927	{
928	cClientsCur++;
929	papInsts[idxSlt] = pIt;
930	}
931	else
932	{
933	atsClientDisconnect(pThis, pIt);
934	atsClientFree(pIt);
935	pIt = NULL;
936	}
937	}
938	else
939	{
940	atsClientDisconnect(pThis, pIt);
941	atsClientFree(pIt);
942	pIt = NULL;
943	}
944	}
945	RTCritSectLeave(&pThis->CritSectClients);
946	}
947	else
948	{
949	bool fDisconnect = false;
950
951	/* Client sends a request, pick the right client and process it. */
952	PATSCLIENTINST pInst = papInsts[uId - 1];
953	AssertPtr(pInst);
954	if (fEvts & RTPOLL_EVT_READ)
955	rc = atsClientReqProcess(pThis, pInst, &fDisconnect);
956
957	if ( (fEvts & RTPOLL_EVT_ERROR)
958	\|\| RT_FAILURE(rc)
959	\|\| fDisconnect)
960	{
961	/* Close connection and remove client from array. */
962	int rc2 = pThis->pTransport->pfnPollSetRemove(pThis->pTransportInst, pThis->hPollSet, pInst->pTransportClient, uId);
963	AssertRC(rc2);
964
965	atsClientDisconnect(pThis, pInst);
966	atsClientFree(pInst);
967	pInst = NULL;
968
969	papInsts[uId - 1] = NULL;
970	Assert(cClientsCur);
971	cClientsCur--;
972	}
973	}
974	}
975	}
976	}
977
978	return rc;
979	}
980
981	/**
982	* The main thread waiting for new client connections.
983	*
984	* @returns VBox status code.
985	*/
986	static DECLCALLBACK(int) atsMainThread(RTTHREAD hThread, void *pvUser)
987	{
988	RT_NOREF(hThread);
989
990	PATSSERVER pThis = (PATSSERVER)pvUser;
991	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
992
993	int rc = RTThreadUserSignal(hThread);
994	AssertRCReturn(rc, rc);
995
996	while (!pThis->fTerminate)
997	{
998	/*
999	* Wait for new connection and spin off a new thread
1000	* for every new client.
1001	*/
1002	PATSTRANSPORTCLIENT pTransportClient;
1003	rc = pThis->pTransport->pfnWaitForConnect(pThis->pTransportInst, &pTransportClient);
1004	if (RT_FAILURE(rc))
1005	continue;
1006
1007	/*
1008	* New connection, create new client structure and spin of
1009	* the request handling thread.
1010	*/
1011	PATSCLIENTINST pInst = (PATSCLIENTINST)RTMemAllocZ(sizeof(ATSCLIENTINST));
1012	if (RT_LIKELY(pInst))
1013	{
1014	pInst->enmState = ATSCLIENTSTATE_INITIALISING;
1015	pInst->pTransportClient = pTransportClient;
1016	pInst->pszHostname = NULL;
1017
1018	/* Add client to the new list and inform the worker thread. */
1019	RTCritSectEnter(&pThis->CritSectClients);
1020	RTListAppend(&pThis->LstClientsNew, &pInst->NdLst);
1021	RTCritSectLeave(&pThis->CritSectClients);
1022
1023	size_t cbWritten = 0;
1024	rc = RTPipeWrite(pThis->hPipeW, "", 1, &cbWritten);
1025	if (RT_FAILURE(rc))
1026	LogRel(("Failed to inform worker thread of a new client, rc=%Rrc\n", rc));
1027	}
1028	else
1029	{
1030	LogRel(("Creating new client structure failed with out of memory error\n"));
1031	pThis->pTransport->pfnNotifyBye(pThis->pTransportInst, pTransportClient);
1032	}
1033	}
1034
1035	return rc;
1036	}
1037
1038	/**
1039	* Initializes an ATS instance.
1040	*
1041	* @note This does not start the server!
1042	*
1043	* @returns VBox status code.
1044	* @param pThis The ATS instance.
1045	* @param pCallbacks The callbacks table to use.
1046	*/
1047	int AudioTestSvcInit(PATSSERVER pThis, PCATSCALLBACKS pCallbacks)
1048	{
1049	RT_BZERO(pThis, sizeof(ATSSERVER));
1050
1051	pThis->hPipeR = NIL_RTPIPE;
1052	pThis->hPipeW = NIL_RTPIPE;
1053
1054	RTListInit(&pThis->LstClientsNew);
1055
1056	/* Copy callback table. */
1057	memcpy(&pThis->Callbacks, pCallbacks, sizeof(ATSCALLBACKS));
1058
1059	int rc = RTCritSectInit(&pThis->CritSectClients);
1060	if (RT_SUCCESS(rc))
1061	{
1062	rc = RTPollSetCreate(&pThis->hPollSet);
1063	if (RT_SUCCESS(rc))
1064	{
1065	rc = RTPipeCreate(&pThis->hPipeR, &pThis->hPipeW, 0);
1066	if (RT_SUCCESS(rc))
1067	{
1068	/*
1069	* The default transporter is the first one.
1070	*/
1071	pThis->pTransport = g_apTransports[0]; /** @todo Make this dynamic. */
1072
1073	rc = pThis->pTransport->pfnCreate(&pThis->pTransportInst);
1074	if (RT_SUCCESS(rc))
1075	return VINF_SUCCESS;
1076
1077	RTPipeClose(pThis->hPipeR);
1078	RTPipeClose(pThis->hPipeW);
1079	}
1080	else
1081	LogRel(("Creating communications pipe failed with %Rrc\n", rc));
1082
1083	RTPollSetDestroy(pThis->hPollSet);
1084	}
1085	else
1086	LogRel(("Creating pollset failed with %Rrc\n", rc));
1087
1088	RTCritSectDelete(&pThis->CritSectClients);
1089	}
1090	else
1091	LogRel(("Creating critical section failed with %Rrc\n", rc));
1092
1093	if (RT_FAILURE(rc))
1094	LogRel(("Creating server failed with %Rrc\n", rc));
1095
1096	return rc;
1097	}
1098
1099	/**
1100	* Handles a command line option.
1101	*
1102	* @returns VBox status code.
1103	* @param pThis The ATS instance to handle option for.
1104	* @param ch Option (short) to handle.
1105	* @param pVal Option union to store the result in on success.
1106	*/
1107	int AudioTestSvcHandleOption(PATSSERVER pThis, int ch, PCRTGETOPTUNION pVal)
1108	{
1109	AssertPtrReturn(pThis->pTransport, VERR_WRONG_ORDER); /* Must be creatd first. */
1110	if (!pThis->pTransport->pfnOption)
1111	return VERR_GETOPT_UNKNOWN_OPTION;
1112	return pThis->pTransport->pfnOption(pThis->pTransportInst, ch, pVal);
1113	}
1114
1115	/**
1116	* Starts a formerly initialized ATS instance.
1117	*
1118	* @returns VBox status code.
1119	* @param pThis The ATS instance to start.
1120	*/
1121	int AudioTestSvcStart(PATSSERVER pThis)
1122	{
1123	/* Spin off the thread serving connections. */
1124	int rc = RTThreadCreate(&pThis->hThreadServing, atsClientWorker, pThis, 0, RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE,
1125	"ATSCLWORK");
1126	if (RT_FAILURE(rc))
1127	{
1128	LogRel(("Creating the client worker thread failed with %Rrc\n", rc));
1129	return rc;
1130	}
1131
1132	rc = pThis->pTransport->pfnStart(pThis->pTransportInst);
1133	if (RT_SUCCESS(rc))
1134	{
1135	/* Spin off the connection thread. */
1136	rc = RTThreadCreate(&pThis->hThreadMain, atsMainThread, pThis, 0, RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE,
1137	"ATSMAIN");
1138	if (RT_SUCCESS(rc))
1139	{
1140	rc = RTThreadUserWait(pThis->hThreadMain, RT_MS_30SEC);
1141	if (RT_SUCCESS(rc))
1142	pThis->fStarted = true;
1143	}
1144	}
1145
1146	return rc;
1147	}
1148
1149	/**
1150	* Stops (shuts down) a formerly started ATS instance.
1151	*
1152	* @returns VBox status code.
1153	* @param pThis The ATS instance.
1154	*/
1155	int AudioTestSvcStop(PATSSERVER pThis)
1156	{
1157	if (!pThis->fStarted)
1158	return VINF_SUCCESS;
1159
1160	ASMAtomicXchgBool(&pThis->fTerminate, true);
1161
1162	if (pThis->pTransport)
1163	pThis->pTransport->pfnTerm(pThis->pTransportInst);
1164
1165	size_t cbWritten;
1166	int rc = RTPipeWrite(pThis->hPipeW, "", 1, &cbWritten);
1167	AssertRCReturn(rc, rc);
1168
1169	/* First close serving thread. */
1170	int rcThread;
1171	rc = RTThreadWait(pThis->hThreadServing, RT_MS_30SEC, &rcThread);
1172	if (RT_SUCCESS(rc))
1173	{
1174	rc = rcThread;
1175	if (RT_SUCCESS(rc))
1176	{
1177	/* Close the main thread last. */
1178	rc = RTThreadWait(pThis->hThreadMain, RT_MS_30SEC, &rcThread);
1179	if (RT_SUCCESS(rc))
1180	rc = rcThread;
1181
1182	if (rc == VERR_TCP_SERVER_DESTROYED)
1183	rc = VINF_SUCCESS;
1184	}
1185	}
1186
1187	if (RT_SUCCESS(rc))
1188	pThis->fStarted = false;
1189
1190	return rc;
1191	}
1192
1193	/**
1194	* Destroys an ATS instance, internal version.
1195	*
1196	* @returns VBox status code.
1197	* @param pThis ATS instance to destroy.
1198	*/
1199	static int audioTestSvcDestroyInternal(PATSSERVER pThis)
1200	{
1201	int rc = VINF_SUCCESS;
1202
1203	if (pThis->hPipeR != NIL_RTPIPE)
1204	{
1205	rc = RTPipeClose(pThis->hPipeR);
1206	AssertRCReturn(rc, rc);
1207	pThis->hPipeR = NIL_RTPIPE;
1208	}
1209
1210	if (pThis->hPipeW != NIL_RTPIPE)
1211	{
1212	rc = RTPipeClose(pThis->hPipeW);
1213	AssertRCReturn(rc, rc);
1214	pThis->hPipeW = NIL_RTPIPE;
1215	}
1216
1217	RTPollSetDestroy(pThis->hPollSet);
1218	pThis->hPollSet = NIL_RTPOLLSET;
1219
1220	PATSCLIENTINST pIt, pItNext;
1221	RTListForEachSafe(&pThis->LstClientsNew, pIt, pItNext, ATSCLIENTINST, NdLst)
1222	{
1223	RTListNodeRemove(&pIt->NdLst);
1224
1225	RTMemFree(pIt);
1226	pIt = NULL;
1227	}
1228
1229	if (RTCritSectIsInitialized(&pThis->CritSectClients))
1230	{
1231	rc = RTCritSectDelete(&pThis->CritSectClients);
1232	AssertRCReturn(rc, rc);
1233	}
1234
1235	return rc;
1236	}
1237
1238	/**
1239	* Destroys an ATS instance.
1240	*
1241	* @returns VBox status code.
1242	* @param pThis ATS instance to destroy.
1243	*/
1244	int AudioTestSvcDestroy(PATSSERVER pThis)
1245	{
1246	int rc = audioTestSvcDestroyInternal(pThis);
1247	if (RT_SUCCESS(rc))
1248	{
1249	if (pThis->pTransport)
1250	{
1251	if ( pThis->pTransport->pfnDestroy
1252	&& pThis->pTransportInst)
1253	{
1254	pThis->pTransport->pfnDestroy(pThis->pTransportInst);
1255	pThis->pTransportInst = NULL;
1256	}
1257	}
1258	}
1259
1260	return rc;
1261	}

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source: vbox/trunk/src/VBox/Devices/Audio/AudioTestService.cpp@ 90918

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