http-server.cpp@ 92258

Last change on this file since 92258 was 87044, checked in by vboxsync, 4 years ago
Shared Clipboard/Transfers: A bit of cleanup rtHttpServerParseRequest(). bugref:9874
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1	/* $Id: http-server.cpp 87044 2020-12-04 17:42:55Z vboxsync $ */
2	/** @file
3	* Simple HTTP server (RFC 7231) implementation.
4	*
5	* Known limitations so far:
6	* - Only HTTP 1.1.
7	* - Only supports GET + HEAD methods so far.
8	* - Only supports UTF-8 charset.
9	* - Only supports plain text and octet stream MIME types.
10	* - No content compression ("gzip", "x-gzip", ++).
11	* - No caching.
12	* - No redirections (via 302).
13	* - No encryption (TLS).
14	* - No IPv6 support.
15	* - No multi-threading.
16	*
17	* For WebDAV (optional via IPRT_HTTP_WITH_WEBDAV):
18	* - Only OPTIONS + PROPLIST methods are implemented (e.g. simple read-only support).
19	* - No pagination support for directory listings.
20	*/
21
22	/*
23	* Copyright (C) 2020 Oracle Corporation
24	*
25	* This file is part of VirtualBox Open Source Edition (OSE), as
26	* available from http://www.virtualbox.org. This file is free software;
27	* you can redistribute it and/or modify it under the terms of the GNU
28	* General Public License (GPL) as published by the Free Software
29	* Foundation, in version 2 as it comes in the "COPYING" file of the
30	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
31	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
32	*
33	* The contents of this file may alternatively be used under the terms
34	* of the Common Development and Distribution License Version 1.0
35	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
36	* VirtualBox OSE distribution, in which case the provisions of the
37	* CDDL are applicable instead of those of the GPL.
38	*
39	* You may elect to license modified versions of this file under the
40	* terms and conditions of either the GPL or the CDDL or both.
41	*/
42
43
44	/*********************************************************************************************************************************
45	* Header Files *
46	*********************************************************************************************************************************/
47	#define LOG_GROUP RTLOGGROUP_HTTP
48	#include <iprt/http.h>
49	#include <iprt/http-server.h>
50	#include "internal/iprt.h"
51	#include "internal/magics.h"
52
53	#include <iprt/asm.h>
54	#include <iprt/assert.h>
55	#include <iprt/circbuf.h>
56	#include <iprt/ctype.h>
57	#include <iprt/err.h>
58	#include <iprt/file.h> /* For file mode flags. */
59	#include <iprt/getopt.h>
60	#include <iprt/mem.h>
61	#include <iprt/log.h>
62	#include <iprt/path.h>
63	#include <iprt/poll.h>
64	#include <iprt/socket.h>
65	#include <iprt/sort.h>
66	#include <iprt/string.h>
67	#include <iprt/system.h>
68	#include <iprt/tcp.h>
69
70
71	/*********************************************************************************************************************************
72	* Structures and Typedefs *
73	*********************************************************************************************************************************/
74	/**
75	* Internal HTTP server instance.
76	*/
77	typedef struct RTHTTPSERVERINTERNAL
78	{
79	/** Magic value. */
80	uint32_t u32Magic;
81	/** Callback table. */
82	RTHTTPSERVERCALLBACKS Callbacks;
83	/** Pointer to TCP server instance. */
84	PRTTCPSERVER pTCPServer;
85	/** Pointer to user-specific data. Optional. */
86	void *pvUser;
87	/** Size of user-specific data. Optional. */
88	size_t cbUser;
89	} RTHTTPSERVERINTERNAL;
90	/** Pointer to an internal HTTP server instance. */
91	typedef RTHTTPSERVERINTERNAL *PRTHTTPSERVERINTERNAL;
92
93
94	/*********************************************************************************************************************************
95	* Defined Constants And Macros *
96	*********************************************************************************************************************************/
97	/** Validates a handle and returns VERR_INVALID_HANDLE if not valid. */
98	#define RTHTTPSERVER_VALID_RETURN_RC(hHttpServer, a_rc) \
99	do { \
100	AssertPtrReturn((hHttpServer), (a_rc)); \
101	AssertReturn((hHttpServer)->u32Magic == RTHTTPSERVER_MAGIC, (a_rc)); \
102	} while (0)
103
104	/** Validates a handle and returns VERR_INVALID_HANDLE if not valid. */
105	#define RTHTTPSERVER_VALID_RETURN(hHttpServer) RTHTTPSERVER_VALID_RETURN_RC((hHttpServer), VERR_INVALID_HANDLE)
106
107	/** Validates a handle and returns (void) if not valid. */
108	#define RTHTTPSERVER_VALID_RETURN_VOID(hHttpServer) \
109	do { \
110	AssertPtrReturnVoid(hHttpServer); \
111	AssertReturnVoid((hHttpServer)->u32Magic == RTHTTPSERVER_MAGIC); \
112	} while (0)
113
114
115	/** Handles a HTTP server callback with no arguments and returns. */
116	#define RTHTTPSERVER_HANDLE_CALLBACK_RET(a_Name) \
117	do \
118	{ \
119	PRTHTTPSERVERCALLBACKS pCallbacks = &pClient->pServer->Callbacks; \
120	if (pCallbacks->a_Name) \
121	{ \
122	RTHTTPCALLBACKDATA Data = { &pClient->State }; \
123	return pCallbacks->a_Name(&Data); \
124	} \
125	return VERR_NOT_IMPLEMENTED; \
126	} while (0)
127
128	/** Handles a HTTP server callback with no arguments and sets rc accordingly. */
129	#define RTHTTPSERVER_HANDLE_CALLBACK(a_Name) \
130	do \
131	{ \
132	PRTHTTPSERVERCALLBACKS pCallbacks = &pClient->pServer->Callbacks; \
133	if (pCallbacks->a_Name) \
134	{ \
135	RTHTTPCALLBACKDATA Data = { &pClient->State, pClient->pServer->pvUser, pClient->pServer->cbUser }; \
136	rc = pCallbacks->a_Name(&Data); \
137	} \
138	} while (0)
139
140	/** Handles a HTTP server callback with arguments and sets rc accordingly. */
141	#define RTHTTPSERVER_HANDLE_CALLBACK_VA(a_Name, ...) \
142	do \
143	{ \
144	PRTHTTPSERVERCALLBACKS pCallbacks = &pClient->pServer->Callbacks; \
145	if (pCallbacks->a_Name) \
146	{ \
147	RTHTTPCALLBACKDATA Data = { &pClient->State, pClient->pServer->pvUser, pClient->pServer->cbUser }; \
148	rc = pCallbacks->a_Name(&Data, __VA_ARGS__); \
149	} \
150	} while (0)
151
152	/** Handles a HTTP server callback with arguments and returns. */
153	#define RTHTTPSERVER_HANDLE_CALLBACK_VA_RET(a_Name, ...) \
154	do \
155	{ \
156	PRTHTTPSERVERCALLBACKS pCallbacks = &pClient->pServer->Callbacks; \
157	if (pCallbacks->a_Name) \
158	{ \
159	RTHTTPCALLBACKDATA Data = { &pClient->State, pClient->pServer->pvUser, pClient->pServer->cbUser }; \
160	return pCallbacks->a_Name(&Data, __VA_ARGS__); \
161	} \
162	} while (0)
163
164
165	/*********************************************************************************************************************************
166	* Structures and Typedefs *
167	*********************************************************************************************************************************/
168
169	/**
170	* Structure for maintaining an internal HTTP server client.
171	*/
172	typedef struct RTHTTPSERVERCLIENT
173	{
174	/** Pointer to internal server state. */
175	PRTHTTPSERVERINTERNAL pServer;
176	/** Socket handle the client is bound to. */
177	RTSOCKET hSocket;
178	/** Actual client state. */
179	RTHTTPSERVERCLIENTSTATE State;
180	} RTHTTPSERVERCLIENT;
181	/** Pointer to an internal HTTP server client state. */
182	typedef RTHTTPSERVERCLIENT *PRTHTTPSERVERCLIENT;
183
184	/** Function pointer declaration for a specific HTTP server method handler. */
185	typedef DECLCALLBACKTYPE(int, FNRTHTTPSERVERMETHOD,(PRTHTTPSERVERCLIENT pClient, PRTHTTPSERVERREQ pReq));
186	/** Pointer to a FNRTHTTPSERVERMETHOD(). */
187	typedef FNRTHTTPSERVERMETHOD *PFNRTHTTPSERVERMETHOD;
188
189	/**
190	* Static lookup table for some file extensions <-> MIME type. Add more as needed.
191	* Keep this alphabetical (file extension).
192	*/
193	static const struct
194	{
195	/** File extension. */
196	const char *pszExt;
197	/** MIME type. */
198	const char *pszMIMEType;
199	} s_aFileExtMIMEType[] = {
200	{ ".arj", "application/x-arj-compressed" },
201	{ ".asf", "video/x-ms-asf" },
202	{ ".avi", "video/x-msvideo" },
203	{ ".bmp", "image/bmp" },
204	{ ".css", "text/css" },
205	{ ".doc", "application/msword" },
206	{ ".exe", "application/octet-stream" },
207	{ ".gif", "image/gif" },
208	{ ".gz", "application/x-gunzip" },
209	{ ".htm", "text/html" },
210	{ ".html", "text/html" },
211	{ ".ico", "image/x-icon" },
212	{ ".js", "application/x-javascript" },
213	{ ".json", "text/json" },
214	{ ".jpg", "image/jpeg" },
215	{ ".jpeg", "image/jpeg" },
216	{ ".ogg", "application/ogg" },
217	{ ".m3u", "audio/x-mpegurl" },
218	{ ".m4v", "video/x-m4v" },
219	{ ".mid", "audio/mid" },
220	{ ".mov", "video/quicktime" },
221	{ ".mp3", "audio/x-mp3" },
222	{ ".mp4", "video/mp4" },
223	{ ".mpg", "video/mpeg" },
224	{ ".mpeg", "video/mpeg" },
225	{ ".pdf", "application/pdf" },
226	{ ".png", "image/png" },
227	{ ".ra", "audio/x-pn-realaudio" },
228	{ ".ram", "audio/x-pn-realaudio" },
229	{ ".rar", "application/x-arj-compressed" },
230	{ ".rtf", "application/rtf" },
231	{ ".shtm", "text/html" },
232	{ ".shtml", "text/html" },
233	{ ".svg", "image/svg+xml" },
234	{ ".swf", "application/x-shockwave-flash" },
235	{ ".torrent", "application/x-bittorrent" },
236	{ ".tar", "application/x-tar" },
237	{ ".tgz", "application/x-tar-gz" },
238	{ ".ttf", "application/x-font-ttf" },
239	{ ".txt", "text/plain" },
240	{ ".wav", "audio/x-wav" },
241	{ ".webm", "video/webm" },
242	{ ".xml", "text/xml" },
243	{ ".xls", "application/excel" },
244	{ ".xsl", "application/xml" },
245	{ ".xslt", "application/xml" },
246	{ ".zip", "application/x-zip-compressed" },
247	{ NULL, NULL }
248	};
249
250
251	/*********************************************************************************************************************************
252	* Internal Functions *
253	*********************************************************************************************************************************/
254
255	/** @name Method handlers.
256	* @{
257	*/
258	static FNRTHTTPSERVERMETHOD rtHttpServerHandleGET;
259	static FNRTHTTPSERVERMETHOD rtHttpServerHandleHEAD;
260	#ifdef IPRT_HTTP_WITH_WEBDAV
261	static FNRTHTTPSERVERMETHOD rtHttpServerHandleOPTIONS;
262	static FNRTHTTPSERVERMETHOD rtHttpServerHandlePROPFIND;
263	#endif
264	/** @} */
265
266	/**
267	* Structure for maintaining a single method entry for the methods table.
268	*/
269	typedef struct RTHTTPSERVERMETHOD_ENTRY
270	{
271	/** Method ID. */
272	RTHTTPMETHOD enmMethod;
273	/** Function pointer invoked to handle the command. */
274	PFNRTHTTPSERVERMETHOD pfnMethod;
275	} RTHTTPSERVERMETHOD_ENTRY;
276	/** Pointer to a command entry. */
277	typedef RTHTTPSERVERMETHOD_ENTRY *PRTHTTPMETHOD_ENTRY;
278
279
280
281	/*********************************************************************************************************************************
282	* Global Variables *
283	*********************************************************************************************************************************/
284	/**
285	* Table of handled methods.
286	*/
287	static const RTHTTPSERVERMETHOD_ENTRY g_aMethodMap[] =
288	{
289	{ RTHTTPMETHOD_GET, rtHttpServerHandleGET },
290	{ RTHTTPMETHOD_HEAD, rtHttpServerHandleHEAD },
291	#ifdef IPRT_HTTP_WITH_WEBDAV
292	{ RTHTTPMETHOD_OPTIONS, rtHttpServerHandleOPTIONS },
293	{ RTHTTPMETHOD_PROPFIND, rtHttpServerHandlePROPFIND },
294	#endif
295	{ RTHTTPMETHOD_END, NULL }
296	};
297
298	/** Maximum length in characters a HTTP server path can have (excluding termination). */
299	#define RTHTTPSERVER_MAX_PATH RTPATH_MAX
300
301
302	/*********************************************************************************************************************************
303	* Internal functions *
304	*********************************************************************************************************************************/
305
306	/**
307	* Guesses the HTTP MIME type based on a given file extension.
308	*
309	* Note: Has to include the beginning dot, e.g. ".mp3" (see IPRT).
310	*
311	* @returns Guessed MIME type, or "application/octet-stream" if not found.
312	* @param pszFileExt File extension to guess MIME type for.
313	*/
314	static const char rtHttpServerGuessMIMEType(const char pszFileExt)
315	{
316	if (pszFileExt)
317	{
318	size_t i = 0;
319	while (s_aFileExtMIMEType[i++].pszExt) /* Slow, but does the job for now. */
320	{
321	if (!RTStrICmp(pszFileExt, s_aFileExtMIMEType[i].pszExt))
322	return s_aFileExtMIMEType[i].pszMIMEType;
323	}
324	}
325
326	return "application/octet-stream";
327	}
328
329	/**
330	* Initializes a HTTP body.
331	*
332	* @param pBody Body to initialize.
333	* @param cbSize Size of body (in bytes) to allocate. Optional and can be 0.
334	*/
335	static int rtHttpServerBodyInit(PRTHTTPBODY pBody, size_t cbSize)
336	{
337	if (cbSize)
338	{
339	pBody->pvBody = RTMemAlloc(cbSize);
340	AssertPtrReturn(pBody->pvBody, VERR_NO_MEMORY);
341	pBody->cbBodyAlloc = cbSize;
342	}
343	else
344	{
345	pBody->pvBody = NULL;
346	pBody->cbBodyAlloc = 0;
347	}
348
349	pBody->cbBodyUsed = 0;
350	pBody->offBody = 0;
351
352	return VINF_SUCCESS;
353	}
354
355	/**
356	* Destroys a HTTP body.
357	*
358	* @param pBody Body to destroy.
359	*/
360	static void rtHttpServerBodyDestroy(PRTHTTPBODY pBody)
361	{
362	if (!pBody)
363	return;
364
365	if (pBody->pvBody)
366	{
367	Assert(pBody->cbBodyAlloc);
368
369	RTMemFree(pBody->pvBody);
370	pBody->pvBody = NULL;
371	}
372
373	pBody->cbBodyAlloc = 0;
374	pBody->cbBodyUsed = 0;
375	pBody->offBody = 0;
376	}
377
378	/**
379	* Allocates and initializes a new client request.
380	*
381	* @returns Pointer to the new client request, or NULL on OOM.
382	* Needs to be free'd with rtHttpServerReqFree().
383	*/
384	static PRTHTTPSERVERREQ rtHttpServerReqAlloc(void)
385	{
386	PRTHTTPSERVERREQ pReq = (PRTHTTPSERVERREQ)RTMemAllocZ(sizeof(RTHTTPSERVERREQ));
387	AssertPtrReturn(pReq, NULL);
388
389	int rc2 = RTHttpHeaderListInit(&pReq->hHdrLst);
390	AssertRC(rc2);
391
392	rc2 = rtHttpServerBodyInit(&pReq->Body, 0 /* cbSize */);
393	AssertRC(rc2);
394
395	return pReq;
396	}
397
398	/**
399	* Frees a formerly allocated client request.
400	*
401	* @param pReq Pointer to client request to free.
402	*/
403	static void rtHttpServerReqFree(PRTHTTPSERVERREQ pReq)
404	{
405	if (!pReq)
406	return;
407
408	RTHttpHeaderListDestroy(pReq->hHdrLst);
409
410	rtHttpServerBodyDestroy(&pReq->Body);
411
412	RTMemFree(pReq);
413	}
414
415	/**
416	* Initializes a HTTP server response with an allocated body size.
417	*
418	* @returns VBox status code.
419	* @param pResp HTTP server response to initialize.
420	* @param cbBody Body size (in bytes) to allocate.
421	*/
422	RTR3DECL(int) RTHttpServerResponseInitEx(PRTHTTPSERVERRESP pResp, size_t cbBody)
423	{
424	pResp->enmSts = RTHTTPSTATUS_INTERNAL_NOT_SET;
425
426	int rc = RTHttpHeaderListInit(&pResp->hHdrLst);
427	AssertRCReturn(rc, rc);
428
429	rc = rtHttpServerBodyInit(&pResp->Body, cbBody);
430
431	return rc;
432	}
433
434	/**
435	* Initializes a HTTP server response.
436	*
437	* @returns VBox status code.
438	* @param pResp HTTP server response to initialize.
439	*/
440	RTR3DECL(int) RTHttpServerResponseInit(PRTHTTPSERVERRESP pResp)
441	{
442	return RTHttpServerResponseInitEx(pResp, 0 /* cbBody */);
443	}
444
445	/**
446	* Destroys a formerly initialized HTTP server response.
447	*
448	* @param pResp Pointer to HTTP server response to destroy.
449	*/
450	RTR3DECL(void) RTHttpServerResponseDestroy(PRTHTTPSERVERRESP pResp)
451	{
452	if (!pResp)
453	return;
454
455	pResp->enmSts = RTHTTPSTATUS_INTERNAL_NOT_SET;
456
457	RTHttpHeaderListDestroy(pResp->hHdrLst);
458
459	rtHttpServerBodyDestroy(&pResp->Body);
460	}
461
462
463	/*********************************************************************************************************************************
464	* Protocol Functions *
465	*********************************************************************************************************************************/
466
467	/**
468	* Logs the HTTP protocol communication to the debug logger (2).
469	*
470	* @param pClient Client to log communication for.
471	* @param fWrite Whether the server is writing (to client) or reading (from client).
472	* @param pszData Actual protocol communication data to log.
473	*/
474	static void rtHttpServerLogProto(PRTHTTPSERVERCLIENT pClient, bool fWrite, const char *pszData)
475	{
476	RT_NOREF(pClient);
477
478	#ifdef LOG_ENABLED
479	if (!pszData) /* Nothing to log? Bail out. */
480	return;
481
482	char **ppapszStrings;
483	size_t cStrings;
484	int rc2 = RTStrSplit(pszData, strlen(pszData), RTHTTPSERVER_HTTP11_EOL_STR, &ppapszStrings, &cStrings);
485	if (RT_SUCCESS(rc2))
486	{
487	for (size_t i = 0; i < cStrings; i++)
488	{
489	Log2(("%s %s\n", fWrite ? ">" : "<", ppapszStrings[i]));
490	RTStrFree(ppapszStrings[i]);
491	}
492
493	RTMemFree(ppapszStrings);
494	}
495	#else
496	RT_NOREF(fWrite, pszData);
497	#endif
498	}
499
500	/**
501	* Writes HTTP protocol communication data to a connected client.
502	*
503	* @returns VBox status code.
504	* @param pClient Client to write data to.
505	* @param pszData Data to write. Must be zero-terminated.
506	*/
507	static int rtHttpServerWriteProto(PRTHTTPSERVERCLIENT pClient, const char *pszData)
508	{
509	rtHttpServerLogProto(pClient, true /* fWrite */, pszData);
510	return RTTcpWrite(pClient->hSocket, pszData, strlen(pszData));
511	}
512
513	/**
514	* Main function for sending a response back to the client.
515	*
516	* @returns VBox status code.
517	* @param pClient Client to reply to.
518	* @param enmSts Status code to send.
519	*/
520	static int rtHttpServerSendResponse(PRTHTTPSERVERCLIENT pClient, RTHTTPSTATUS enmSts)
521	{
522	char *pszResp;
523	int rc = RTStrAPrintf(&pszResp,
524	"%s %RU32 %s\r\n", RTHTTPVER_1_1_STR, enmSts, RTHttpStatusToStr(enmSts));
525	AssertRCReturn(rc, rc);
526	rc = rtHttpServerWriteProto(pClient, pszResp);
527	RTStrFree(pszResp);
528
529	LogFlowFuncLeaveRC(rc);
530	return rc;
531	}
532
533	/**
534	* Main function for sending response headers back to the client.
535	*
536	* @returns VBox status code.
537	* @param pClient Client to reply to.
538	* @param pHdrLst Header list to send. Optional and can be NULL.
539	*/
540	static int rtHttpServerSendResponseHdrEx(PRTHTTPSERVERCLIENT pClient, PRTHTTPHEADERLIST pHdrLst)
541	{
542	RTHTTPHEADERLIST HdrLst;
543	int rc = RTHttpHeaderListInit(&HdrLst);
544	AssertRCReturn(rc, rc);
545
546	#ifdef DEBUG
547	/* Include a timestamp when running a debug build. */
548	RTTIMESPEC tsNow;
549	char szTS[64];
550	RTTimeSpecToString(RTTimeNow(&tsNow), szTS, sizeof(szTS));
551	rc = RTHttpHeaderListAdd(HdrLst, "Date", szTS, strlen(szTS), RTHTTPHEADERLISTADD_F_BACK);
552	AssertRCReturn(rc, rc);
553	#endif
554
555	/* Note: Deliberately don't include the VBox version due to security reasons. */
556	rc = RTHttpHeaderListAdd(HdrLst, "Server", "Oracle VirtualBox", strlen("Oracle VirtualBox"), RTHTTPHEADERLISTADD_F_BACK);
557	AssertRCReturn(rc, rc);
558
559	#ifdef IPRT_HTTP_WITH_WEBDAV
560	rc = RTHttpHeaderListAdd(HdrLst, "Allow", "GET, HEAD, PROPFIND", strlen("GET, HEAD, PROPFIND"), RTHTTPHEADERLISTADD_F_BACK);
561	AssertRCReturn(rc, rc);
562	rc = RTHttpHeaderListAdd(HdrLst, "DAV", "1", strlen("1"), RTHTTPHEADERLISTADD_F_BACK); /* Note: v1 is sufficient for read-only access. */
563	AssertRCReturn(rc, rc);
564	#endif
565
566	char *pszHdr = NULL;
567
568	size_t i = 0;
569	const char *pszEntry;
570	while ((pszEntry = RTHttpHeaderListGetByOrdinal(HdrLst, i++)) != NULL)
571	{
572	rc = RTStrAAppend(&pszHdr, pszEntry);
573	AssertRCBreak(rc);
574	rc = RTStrAAppend(&pszHdr, RTHTTPSERVER_HTTP11_EOL_STR);
575	AssertRCBreak(rc);
576	}
577
578	/* Append optional headers, if any. */
579	if (pHdrLst)
580	{
581	i = 0;
582	while ((pszEntry = RTHttpHeaderListGetByOrdinal(*pHdrLst, i++)) != NULL)
583	{
584	rc = RTStrAAppend(&pszHdr, pszEntry);
585	AssertRCBreak(rc);
586	rc = RTStrAAppend(&pszHdr, RTHTTPSERVER_HTTP11_EOL_STR);
587	AssertRCBreak(rc);
588	}
589	}
590
591	if (RT_SUCCESS(rc))
592	{
593	/* Append trailing EOL. */
594	rc = RTStrAAppend(&pszHdr, RTHTTPSERVER_HTTP11_EOL_STR);
595	if (RT_SUCCESS(rc))
596	rc = rtHttpServerWriteProto(pClient, pszHdr);
597	}
598
599	RTStrFree(pszHdr);
600
601	RTHttpHeaderListDestroy(HdrLst);
602
603	LogFlowFunc(("rc=%Rrc\n", rc));
604	return rc;
605	}
606
607	/**
608	* Replies with (three digit) response status back to the client, extended version.
609	*
610	* @returns VBox status code.
611	* @param pClient Client to reply to.
612	* @param enmSts Status code to send.
613	* @param pHdrLst Header list to send. Optional and can be NULL.
614	*/
615	static int rtHttpServerSendResponseEx(PRTHTTPSERVERCLIENT pClient, RTHTTPSTATUS enmSts, PRTHTTPHEADERLIST pHdrLst)
616	{
617	int rc = rtHttpServerSendResponse(pClient, enmSts);
618	if (RT_SUCCESS(rc))
619	rc = rtHttpServerSendResponseHdrEx(pClient, pHdrLst);
620
621	return rc;
622	}
623
624	/**
625	* Replies with (three digit) response status back to the client.
626	*
627	* @returns VBox status code.
628	* @param pClient Client to reply to.
629	* @param enmSts Status code to send.
630	*/
631	static int rtHttpServerSendResponseSimple(PRTHTTPSERVERCLIENT pClient, RTHTTPSTATUS enmSts)
632	{
633	return rtHttpServerSendResponseEx(pClient, enmSts, NULL /* pHdrLst */);
634	}
635
636	/**
637	* Sends a chunk of the response body to the client.
638	*
639	* @returns VBox status code.
640	* @param pClient Client to send body to.
641	* @param pvBuf Data buffer to send.
642	* @param cbBuf Size (in bytes) of data buffer to send.
643	* @param pcbSent Where to store the sent bytes. Optional and can be NULL.
644	*/
645	static int rtHttpServerSendResponseBody(PRTHTTPSERVERCLIENT pClient, void pvBuf, size_t cbBuf, size_t pcbSent)
646	{
647	int rc = RTTcpWrite(pClient->hSocket, pvBuf, cbBuf);
648	if ( RT_SUCCESS(rc)
649	&& pcbSent)
650	*pcbSent = cbBuf;
651
652	return rc;
653	}
654
655	/**
656	* Resolves a VBox status code to a HTTP status code.
657	*
658	* @returns Resolved HTTP status code, or RTHTTPSTATUS_INTERNALSERVERERROR if not able to resolve.
659	* @param rc VBox status code to resolve.
660	*/
661	static RTHTTPSTATUS rtHttpServerRcToStatus(int rc)
662	{
663	switch (rc)
664	{
665	case VINF_SUCCESS: return RTHTTPSTATUS_OK;
666	case VERR_INVALID_PARAMETER: return RTHTTPSTATUS_BADREQUEST;
667	case VERR_INVALID_POINTER: return RTHTTPSTATUS_BADREQUEST;
668	case VERR_NOT_IMPLEMENTED: return RTHTTPSTATUS_NOTIMPLEMENTED;
669	case VERR_NOT_SUPPORTED: return RTHTTPSTATUS_NOTIMPLEMENTED;
670	case VERR_PATH_NOT_FOUND: return RTHTTPSTATUS_NOTFOUND;
671	case VERR_FILE_NOT_FOUND: return RTHTTPSTATUS_NOTFOUND;
672	case VERR_IS_A_DIRECTORY: return RTHTTPSTATUS_FORBIDDEN;
673	case VERR_NOT_FOUND: return RTHTTPSTATUS_NOTFOUND;
674	default:
675	break;
676	}
677
678	AssertMsgFailed(("rc=%Rrc not handled for HTTP status\n", rc));
679	return RTHTTPSTATUS_INTERNALSERVERERROR;
680	}
681
682
683	/*********************************************************************************************************************************
684	* Command Protocol Handlers *
685	*********************************************************************************************************************************/
686
687	/**
688	* Handler for the GET method.
689	*
690	* @returns VBox status code.
691	* @param pClient Client to handle GET method for.
692	* @param pReq Client request to handle.
693	*/
694	static DECLCALLBACK(int) rtHttpServerHandleGET(PRTHTTPSERVERCLIENT pClient, PRTHTTPSERVERREQ pReq)
695	{
696	LogFlowFuncEnter();
697
698	int rc = VINF_SUCCESS;
699
700	/* If a low-level GET request handler is defined, call it and return. */
701	RTHTTPSERVER_HANDLE_CALLBACK_VA_RET(pfnOnGetRequest, pReq);
702
703	RTFSOBJINFO fsObj;
704	RT_ZERO(fsObj); /* Shut up MSVC. */
705
706	char *pszMIMEHint = NULL;
707
708	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnQueryInfo, pReq, &fsObj, &pszMIMEHint);
709	if (RT_FAILURE(rc))
710	return rc;
711
712	void *pvHandle = NULL;
713	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnOpen, pReq, &pvHandle);
714
715	if (RT_SUCCESS(rc))
716	{
717	size_t cbBuf = _64K;
718	void *pvBuf = RTMemAlloc(cbBuf);
719	AssertPtrReturn(pvBuf, VERR_NO_MEMORY);
720
721	for (;;)
722	{
723	RTHTTPHEADERLIST HdrLst;
724	rc = RTHttpHeaderListInit(&HdrLst);
725	AssertRCReturn(rc, rc);
726
727	char szVal[16];
728
729	/* Note: For directories fsObj.cbObject contains the actual size (in bytes)
730	* of the body data for the directory listing. */
731
732	ssize_t cch = RTStrPrintf2(szVal, sizeof(szVal), "%RU64", fsObj.cbObject);
733	AssertBreakStmt(cch, VERR_BUFFER_OVERFLOW);
734	rc = RTHttpHeaderListAdd(HdrLst, "Content-Length", szVal, strlen(szVal), RTHTTPHEADERLISTADD_F_BACK);
735	AssertRCBreak(rc);
736
737	cch = RTStrPrintf2(szVal, sizeof(szVal), "identity");
738	AssertBreakStmt(cch, VERR_BUFFER_OVERFLOW);
739	rc = RTHttpHeaderListAdd(HdrLst, "Content-Encoding", szVal, strlen(szVal), RTHTTPHEADERLISTADD_F_BACK);
740	AssertRCBreak(rc);
741
742	if (pszMIMEHint == NULL)
743	{
744	const char *pszMIME = rtHttpServerGuessMIMEType(RTPathSuffix(pReq->pszUrl));
745	rc = RTHttpHeaderListAdd(HdrLst, "Content-Type", pszMIME, strlen(pszMIME), RTHTTPHEADERLISTADD_F_BACK);
746	}
747	else
748	{
749	rc = RTHttpHeaderListAdd(HdrLst, "Content-Type", pszMIMEHint, strlen(pszMIMEHint), RTHTTPHEADERLISTADD_F_BACK);
750	RTStrFree(pszMIMEHint);
751	pszMIMEHint = NULL;
752	}
753	AssertRCReturn(rc, rc);
754
755	if (pClient->State.msKeepAlive)
756	{
757	/* If the client requested to keep alive the connection,
758	* always override this with 30s and report this back to the client. */
759	pClient->State.msKeepAlive = RT_MS_30SEC; /** @todo Make this configurable. */
760	#ifdef DEBUG_andy
761	pClient->State.msKeepAlive = 5000;
762	#endif
763	cch = RTStrPrintf2(szVal, sizeof(szVal), "timeout=%RU64", pClient->State.msKeepAlive / RT_MS_1SEC); /** @todo No pipelining support here yet. */
764	AssertBreakStmt(cch, VERR_BUFFER_OVERFLOW);
765	rc = RTHttpHeaderListAdd(HdrLst, "Keep-Alive", szVal, strlen(szVal), RTHTTPHEADERLISTADD_F_BACK);
766	AssertRCReturn(rc, rc);
767	}
768
769	rc = rtHttpServerSendResponseEx(pClient, RTHTTPSTATUS_OK, &HdrLst);
770
771	RTHttpHeaderListDestroy(HdrLst);
772
773	if (rc == VERR_BROKEN_PIPE) /* Could happen on fast reloads. */
774	break;
775	AssertRCReturn(rc, rc);
776
777	size_t cbToRead = fsObj.cbObject;
778	size_t cbRead = 0; /* Shut up GCC. */
779	size_t cbWritten = 0; /* Ditto. */
780	while (cbToRead)
781	{
782	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnRead, pvHandle, pvBuf, RT_MIN(cbBuf, cbToRead), &cbRead);
783	if (RT_FAILURE(rc))
784	break;
785	rc = rtHttpServerSendResponseBody(pClient, pvBuf, cbRead, &cbWritten);
786	AssertBreak(cbToRead >= cbWritten);
787	cbToRead -= cbWritten;
788	if (rc == VERR_NET_CONNECTION_RESET_BY_PEER) /* Clients often apruptly abort the connection when done. */
789	{
790	rc = VINF_SUCCESS;
791	break;
792	}
793	AssertRCBreak(rc);
794	}
795
796	break;
797	} /* for (;;) */
798
799	RTMemFree(pvBuf);
800
801	int rc2 = rc; /* Save rc. */
802
803	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnClose, pvHandle);
804
805	if (RT_FAILURE(rc2)) /* Restore original rc on failure. */
806	rc = rc2;
807	}
808
809	LogFlowFuncLeaveRC(rc);
810	return rc;
811	}
812
813	/**
814	* Handler for the HEAD method.
815	*
816	* @returns VBox status code.
817	* @param pClient Client to handle HEAD method for.
818	* @param pReq Client request to handle.
819	*/
820	static DECLCALLBACK(int) rtHttpServerHandleHEAD(PRTHTTPSERVERCLIENT pClient, PRTHTTPSERVERREQ pReq)
821	{
822	LogFlowFuncEnter();
823
824	/* If a low-level HEAD request handler is defined, call it and return. */
825	RTHTTPSERVER_HANDLE_CALLBACK_VA_RET(pfnOnHeadRequest, pReq);
826
827	int rc = VINF_SUCCESS;
828
829	RTFSOBJINFO fsObj;
830	RT_ZERO(fsObj); /* Shut up MSVC. */
831
832	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnQueryInfo, pReq, &fsObj, NULL /* pszMIMEHint */);
833	if (RT_SUCCESS(rc))
834	{
835	RTHTTPHEADERLIST HdrLst;
836	rc = RTHttpHeaderListInit(&HdrLst);
837	AssertRCReturn(rc, rc);
838
839	/*
840	* Note: A response to a HEAD request does not have a body.
841	* All entity headers below are assumed to describe the the response a similar GET
842	* request would return (but then with a body).
843	*/
844	char szVal[16];
845
846	ssize_t cch = RTStrPrintf2(szVal, sizeof(szVal), "%RU64", fsObj.cbObject);
847	AssertReturn(cch, VERR_BUFFER_OVERFLOW);
848	rc = RTHttpHeaderListAdd(HdrLst, "Content-Length", szVal, strlen(szVal), RTHTTPHEADERLISTADD_F_BACK);
849	AssertRCReturn(rc, rc);
850
851	cch = RTStrPrintf2(szVal, sizeof(szVal), "identity");
852	AssertReturn(cch, VERR_BUFFER_OVERFLOW);
853	rc = RTHttpHeaderListAdd(HdrLst, "Content-Encoding", szVal, strlen(szVal), RTHTTPHEADERLISTADD_F_BACK);
854	AssertRCReturn(rc, rc);
855
856	const char *pszMIME = rtHttpServerGuessMIMEType(RTPathSuffix(pReq->pszUrl));
857	rc = RTHttpHeaderListAdd(HdrLst, "Content-Type", pszMIME, strlen(pszMIME), RTHTTPHEADERLISTADD_F_BACK);
858	AssertRCReturn(rc, rc);
859
860	rc = rtHttpServerSendResponseEx(pClient, RTHTTPSTATUS_OK, &HdrLst);
861	AssertRCReturn(rc, rc);
862
863	RTHttpHeaderListDestroy(HdrLst);
864	}
865
866	LogFlowFuncLeaveRC(rc);
867	return rc;
868	}
869
870	#ifdef IPRT_HTTP_WITH_WEBDAV
871	/**
872	* Handler for the OPTIONS method.
873	*
874	* @returns VBox status code.
875	* @param pClient Client to handle OPTIONS method for.
876	* @param pReq Client request to handle.
877	*/
878	static DECLCALLBACK(int) rtHttpServerHandleOPTIONS(PRTHTTPSERVERCLIENT pClient, PRTHTTPSERVERREQ pReq)
879	{
880	LogFlowFuncEnter();
881
882	RT_NOREF(pReq);
883
884	int rc = rtHttpServerSendResponseEx(pClient, RTHTTPSTATUS_OK, NULL /* pHdrLst */);
885
886	LogFlowFuncLeaveRC(rc);
887	return rc;
888	}
889
890	/**
891	* Handler for the PROPFIND (WebDAV) method.
892	*
893	* @returns VBox status code.
894	* @param pClient Client to handle PROPFIND method for.
895	* @param pReq Client request to handle.
896	*/
897	static DECLCALLBACK(int) rtHttpServerHandlePROPFIND(PRTHTTPSERVERCLIENT pClient, PRTHTTPSERVERREQ pReq)
898	{
899	LogFlowFuncEnter();
900
901	int rc = VINF_SUCCESS;
902
903	/* If a low-level GET request handler is defined, call it and return. */
904	RTHTTPSERVER_HANDLE_CALLBACK_VA_RET(pfnOnGetRequest, pReq);
905
906	RTFSOBJINFO fsObj;
907	RT_ZERO(fsObj); /* Shut up MSVC. */
908
909	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnQueryInfo, pReq, &fsObj, NULL /* pszMIMEHint */);
910	if (RT_FAILURE(rc))
911	return rc;
912
913	void *pvHandle = NULL;
914	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnOpen, pReq, &pvHandle);
915
916	if (RT_SUCCESS(rc))
917	{
918	size_t cbBuf = _64K;
919	void *pvBuf = RTMemAlloc(cbBuf);
920	AssertPtrReturn(pvBuf, VERR_NO_MEMORY);
921
922	for (;;)
923	{
924	RTHTTPHEADERLIST HdrLst;
925	rc = RTHttpHeaderListInit(&HdrLst);
926	AssertRCReturn(rc, rc);
927
928	char szVal[16];
929
930	rc = RTHttpHeaderListAdd(HdrLst, "Content-Type", "text/xml; charset=utf-8", strlen("text/xml; charset=utf-8"), RTHTTPHEADERLISTADD_F_BACK);
931	AssertRCBreak(rc);
932
933	/* Note: For directories fsObj.cbObject contains the actual size (in bytes)
934	* of the body data for the directory listing. */
935
936	ssize_t cch = RTStrPrintf2(szVal, sizeof(szVal), "%RU64", fsObj.cbObject);
937	AssertBreakStmt(cch, VERR_BUFFER_OVERFLOW);
938	rc = RTHttpHeaderListAdd(HdrLst, "Content-Length", szVal, strlen(szVal), RTHTTPHEADERLISTADD_F_BACK);
939	AssertRCBreak(rc);
940
941	rc = rtHttpServerSendResponseEx(pClient, RTHTTPSTATUS_MULTISTATUS, &HdrLst);
942	AssertRCReturn(rc, rc);
943
944	RTHttpHeaderListDestroy(HdrLst);
945
946	size_t cbToRead = fsObj.cbObject;
947	size_t cbRead = 0; /* Shut up GCC. */
948	size_t cbWritten = 0; /* Ditto. */
949	while (cbToRead)
950	{
951	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnRead, pvHandle, pvBuf, RT_MIN(cbBuf, cbToRead), &cbRead);
952	if (RT_FAILURE(rc))
953	break;
954	//rtHttpServerLogProto(pClient, true /* fWrite /, (const char )pvBuf);
955	rc = rtHttpServerSendResponseBody(pClient, pvBuf, cbRead, &cbWritten);
956	AssertBreak(cbToRead >= cbWritten);
957	cbToRead -= cbWritten;
958	if (rc == VERR_NET_CONNECTION_RESET_BY_PEER) /* Clients often apruptly abort the connection when done. */
959	{
960	rc = VINF_SUCCESS;
961	break;
962	}
963	AssertRCBreak(rc);
964	}
965
966	break;
967	} /* for (;;) */
968
969	RTMemFree(pvBuf);
970
971	int rc2 = rc; /* Save rc. */
972
973	RTHTTPSERVER_HANDLE_CALLBACK_VA(pfnClose, pvHandle);
974
975	if (RT_FAILURE(rc2)) /* Restore original rc on failure. */
976	rc = rc2;
977	}
978
979	LogFlowFuncLeaveRC(rc);
980	return rc;
981	}
982	#endif /* IPRT_HTTP_WITH_WEBDAV */
983
984	/**
985	* Validates if a given path is valid or not.
986	*
987	* @returns \c true if path is valid, or \c false if not.
988	* @param pszPath Path to check.
989	* @param fIsAbsolute Whether the path to check is an absolute path or not.
990	*/
991	static bool rtHttpServerPathIsValid(const char *pszPath, bool fIsAbsolute)
992	{
993	if (!pszPath)
994	return false;
995
996	bool fIsValid = strlen(pszPath)
997	&& RTStrIsValidEncoding(pszPath)
998	&& RTStrStr(pszPath, "..") == NULL; /** @todo Very crude for now -- improve this. */
999	if ( fIsValid
1000	&& fIsAbsolute)
1001	{
1002	RTFSOBJINFO objInfo;
1003	int rc2 = RTPathQueryInfo(pszPath, &objInfo, RTFSOBJATTRADD_NOTHING);
1004	if (RT_SUCCESS(rc2))
1005	{
1006	fIsValid = RTFS_IS_DIRECTORY(objInfo.Attr.fMode)
1007	\|\| RTFS_IS_FILE(objInfo.Attr.fMode);
1008
1009	/* No symlinks and other stuff not allowed. */
1010	}
1011	else
1012	fIsValid = false;
1013	}
1014
1015	LogFlowFunc(("pszPath=%s -> %RTbool\n", pszPath, fIsValid));
1016	return fIsValid;
1017
1018	}
1019
1020	/**
1021	* Parses headers and sets (replaces) a given header list.
1022	*
1023	* @returns VBox status code.
1024	* @param hList Header list to fill parsed headers in.
1025	* @param cStrings Number of strings to parse for \a papszStrings.
1026	* @param papszStrings Array of strings to parse.
1027	*/
1028	static int rtHttpServerParseHeaders(RTHTTPHEADERLIST hList, size_t cStrings, char **papszStrings)
1029	{
1030	/* Nothing to parse left? Bail out early. */
1031	if ( !cStrings
1032	\|\| !papszStrings)
1033	return VINF_SUCCESS;
1034
1035	#ifdef LOG_ENABLED
1036	for (size_t i = 0; i < cStrings; i++)
1037	LogFlowFunc(("Header: %s\n", papszStrings[i]));
1038	#endif
1039
1040	int rc = RTHttpHeaderListSet(hList, cStrings, papszStrings);
1041
1042	LogFlowFunc(("rc=%Rrc, cHeaders=%zu\n", rc, cStrings));
1043	return rc;
1044	}
1045
1046	/**
1047	* Main function for parsing and allocating a client request.
1048	*
1049	* See: https://tools.ietf.org/html/rfc2616#section-2.2
1050	*
1051	* @returns VBox status code.
1052	* @param pClient Client to parse request from.
1053	* @param pszReq Request string with headers to parse.
1054	* @param cbReq Size (in bytes) of request string to parse.
1055	* @param ppReq Where to store the allocated client request on success.
1056	* Needs to be free'd via rtHttpServerReqFree().
1057	*/
1058	static int rtHttpServerParseRequest(PRTHTTPSERVERCLIENT pClient, const char *pszReq, size_t cbReq,
1059	PRTHTTPSERVERREQ *ppReq)
1060	{
1061	RT_NOREF(pClient);
1062
1063	AssertPtrReturn(pszReq, VERR_INVALID_POINTER);
1064	AssertReturn(cbReq, VERR_INVALID_PARAMETER);
1065
1066	/* We only support UTF-8 charset for now. */
1067	AssertReturn(RTStrIsValidEncoding(pszReq), VERR_INVALID_PARAMETER);
1068
1069	char **ppapszReq = NULL;
1070	size_t cReq = 0;
1071	int rc = RTStrSplit(pszReq, cbReq, RTHTTPSERVER_HTTP11_EOL_STR, &ppapszReq, &cReq);
1072	if (RT_FAILURE(rc))
1073	return rc;
1074
1075	if (!cReq)
1076	return VERR_INVALID_PARAMETER;
1077
1078	#ifdef LOG_ENABLED
1079	for (size_t i = 0; i < cReq; i++)
1080	LogFlowFunc(("%s\n", ppapszReq[i]));
1081	#endif
1082
1083	PRTHTTPSERVERREQ pReq = NULL;
1084
1085	char **ppapszFirstLine = NULL;
1086	size_t cFirstLine = 0;
1087	rc = RTStrSplit(ppapszReq[0], strlen(ppapszReq[0]), " ", &ppapszFirstLine, &cFirstLine);
1088	if (RT_SUCCESS(rc))
1089	{
1090	if (cFirstLine < 3) /* At leat the method, path and version has to be present. */
1091	rc = VERR_INVALID_PARAMETER;
1092	}
1093
1094	while (RT_SUCCESS(rc)) /* To use break. */
1095	{
1096	pReq = rtHttpServerReqAlloc();
1097	AssertPtrBreakStmt(pReq, rc = VERR_NO_MEMORY);
1098
1099	/*
1100	* Parse method to use. Method names are case sensitive.
1101	*/
1102	const char *pszMethod = ppapszFirstLine[0];
1103	if (!RTStrCmp(pszMethod, "GET")) pReq->enmMethod = RTHTTPMETHOD_GET;
1104	else if (!RTStrCmp(pszMethod, "HEAD")) pReq->enmMethod = RTHTTPMETHOD_HEAD;
1105	#ifdef IPRT_HTTP_WITH_WEBDAV
1106	else if (!RTStrCmp(pszMethod, "OPTIONS")) pReq->enmMethod = RTHTTPMETHOD_OPTIONS;
1107	else if (!RTStrCmp(pszMethod, "PROPFIND")) pReq->enmMethod = RTHTTPMETHOD_PROPFIND;
1108	#endif
1109	else
1110	{
1111	rc = VERR_NOT_SUPPORTED;
1112	break;
1113	}
1114
1115	/*
1116	* Parse requested path.
1117	*/
1118	/** @todo Do URL unescaping here. */
1119	const char *pszPath = ppapszFirstLine[1];
1120	if (!rtHttpServerPathIsValid(pszPath, false /* fIsAbsolute */))
1121	{
1122	rc = VERR_PATH_NOT_FOUND;
1123	break;
1124	}
1125
1126	pReq->pszUrl = RTStrDup(pszPath);
1127
1128	/*
1129	* Parse HTTP version to use.
1130	* We're picky heree: Only HTTP 1.1 is supported by now.
1131	*/
1132	const char *pszVer = ppapszFirstLine[2];
1133	if (RTStrCmp(pszVer, RTHTTPVER_1_1_STR)) /** @todo Use RTStrVersionCompare. Later. */
1134	{
1135	rc = VERR_NOT_SUPPORTED;
1136	break;
1137	}
1138
1139	/** @todo Anything else needed for the first line here? */
1140
1141	/*
1142	* Process headers, if any.
1143	*/
1144	if (cReq > 1)
1145	{
1146	rc = rtHttpServerParseHeaders(pReq->hHdrLst, cReq - 1, &ppapszReq[1]);
1147	if (RT_SUCCESS(rc))
1148	{
1149	if (RTHttpHeaderListGet(pReq->hHdrLst, "Connection", RTSTR_MAX))
1150	pClient->State.msKeepAlive = RT_MS_30SEC; /** @todo Insert the real value here. */
1151	}
1152	}
1153	break;
1154	} /* for (;;) */
1155
1156	/*
1157	* Cleanup.
1158	*/
1159
1160	for (size_t i = 0; i < cFirstLine; i++)
1161	RTStrFree(ppapszFirstLine[i]);
1162	RTMemFree(ppapszFirstLine);
1163
1164	for (size_t i = 0; i < cReq; i++)
1165	RTStrFree(ppapszReq[i]);
1166	RTMemFree(ppapszReq);
1167
1168	if (RT_FAILURE(rc))
1169	{
1170	rtHttpServerReqFree(pReq);
1171	pReq = NULL;
1172	}
1173	else
1174	*ppReq = pReq;
1175
1176	return rc;
1177	}
1178
1179	/**
1180	* Main function for processing client requests.
1181	*
1182	* @returns VBox status code.
1183	* @param pClient Client to process request for.
1184	* @param pszReq Request string to parse and handle.
1185	* @param cbReq Size (in bytes) of request string.
1186	*/
1187	static int rtHttpServerProcessRequest(PRTHTTPSERVERCLIENT pClient, char *pszReq, size_t cbReq)
1188	{
1189	RTHTTPSTATUS enmSts = RTHTTPSTATUS_INTERNAL_NOT_SET;
1190
1191	PRTHTTPSERVERREQ pReq = NULL; /* Shut up GCC. */
1192	int rc = rtHttpServerParseRequest(pClient, pszReq, cbReq, &pReq);
1193	if (RT_SUCCESS(rc))
1194	{
1195	LogFlowFunc(("Request %s %s\n", RTHttpMethodToStr(pReq->enmMethod), pReq->pszUrl));
1196
1197	unsigned i = 0;
1198	for (; i < RT_ELEMENTS(g_aMethodMap); i++)
1199	{
1200	const RTHTTPSERVERMETHOD_ENTRY *pMethodEntry = &g_aMethodMap[i];
1201	if (pReq->enmMethod == pMethodEntry->enmMethod)
1202	{
1203	/* Hand in request to method handler. */
1204	int rcMethod = pMethodEntry->pfnMethod(pClient, pReq);
1205	if (RT_FAILURE(rcMethod))
1206	LogFunc(("Request %s %s failed with %Rrc\n", RTHttpMethodToStr(pReq->enmMethod), pReq->pszUrl, rcMethod));
1207
1208	enmSts = rtHttpServerRcToStatus(rcMethod);
1209	break;
1210	}
1211	}
1212
1213	if (i == RT_ELEMENTS(g_aMethodMap))
1214	enmSts = RTHTTPSTATUS_NOTIMPLEMENTED;
1215
1216	rtHttpServerReqFree(pReq);
1217	}
1218	else
1219	enmSts = RTHTTPSTATUS_BADREQUEST;
1220
1221	if (enmSts != RTHTTPSTATUS_INTERNAL_NOT_SET)
1222	{
1223	int rc2 = rtHttpServerSendResponseSimple(pClient, enmSts);
1224	if (RT_SUCCESS(rc))
1225	rc = rc2;
1226	}
1227
1228	LogFlowFuncLeaveRC(rc);
1229	return rc;
1230	}
1231
1232	/**
1233	* Main loop for processing client requests.
1234	*
1235	* @returns VBox status code.
1236	* @param pClient Client to process requests for.
1237	*/
1238	static int rtHttpServerClientMain(PRTHTTPSERVERCLIENT pClient)
1239	{
1240	int rc;
1241
1242	char szReq[RTHTTPSERVER_MAX_REQ_LEN + 1];
1243
1244	LogFlowFunc(("Client connected\n"));
1245
1246	/* Initialize client state. */
1247	pClient->State.msKeepAlive = 0;
1248
1249	RTMSINTERVAL cWaitMs = RT_INDEFINITE_WAIT; /* The first wait always waits indefinitely. */
1250	uint64_t tsLastReadMs = 0;
1251
1252	for (;;)
1253	{
1254	rc = RTTcpSelectOne(pClient->hSocket, cWaitMs);
1255	if (RT_FAILURE(rc))
1256	{
1257	LogFlowFunc(("RTTcpSelectOne=%Rrc (cWaitMs=%RU64)\n", rc, cWaitMs));
1258	if (rc == VERR_TIMEOUT)
1259	{
1260	if (pClient->State.msKeepAlive) /* Keep alive handling needed? */
1261	{
1262	if (!tsLastReadMs)
1263	tsLastReadMs = RTTimeMilliTS();
1264	const uint64_t tsDeltaMs = pClient->State.msKeepAlive - (RTTimeMilliTS() - tsLastReadMs);
1265	LogFlowFunc(("tsLastReadMs=%RU64, tsDeltaMs=%RU64\n", tsLastReadMs, tsDeltaMs));
1266	Log3Func(("Keep alive active (%RU32ms): %RU64ms remaining\n", pClient->State.msKeepAlive, tsDeltaMs));
1267	if ( tsDeltaMs > cWaitMs
1268	&& tsDeltaMs < pClient->State.msKeepAlive)
1269	continue;
1270
1271	LogFunc(("Keep alive active: Client did not respond within %RU32ms, closing\n", pClient->State.msKeepAlive));
1272	rc = VINF_SUCCESS;
1273	break;
1274	}
1275	}
1276
1277	break;
1278	}
1279
1280	LogFlowFunc(("Reading client request ...\n"));
1281
1282	tsLastReadMs = RTTimeMilliTS();
1283	cWaitMs = 200; /* All consequtive waits do busy waiting for now. */
1284
1285	char *pszReq = szReq;
1286	size_t cbRead;
1287	size_t cbToRead = sizeof(szReq);
1288	size_t cbReadTotal = 0;
1289
1290	do
1291	{
1292	rc = RTTcpReadNB(pClient->hSocket, pszReq, cbToRead, &cbRead);
1293	if (RT_FAILURE(rc))
1294	break;
1295
1296	if (!cbRead)
1297	break;
1298
1299	/* Make sure to terminate string read so far. */
1300	pszReq[cbRead] = '\0';
1301
1302	/* End of request reached? */
1303	/** @todo BUGBUG Improve this. */
1304	char *pszEOR = RTStrStr(&pszReq[cbReadTotal], "\r\n\r\n");
1305	if (pszEOR)
1306	{
1307	cbReadTotal = pszEOR - pszReq;
1308	*pszEOR = '\0';
1309	break;
1310	}
1311
1312	AssertBreak(cbToRead >= cbRead);
1313	cbToRead -= cbRead;
1314	cbReadTotal += cbRead;
1315	AssertBreak(cbReadTotal <= sizeof(szReq));
1316	pszReq += cbRead;
1317
1318	} while (cbToRead);
1319
1320	if ( RT_SUCCESS(rc)
1321	&& cbReadTotal)
1322	{
1323	LogFlowFunc(("Received client request (%zu bytes)\n", cbReadTotal));
1324
1325	rtHttpServerLogProto(pClient, false /* fWrite */, szReq);
1326
1327	rc = rtHttpServerProcessRequest(pClient, szReq, cbReadTotal);
1328	}
1329	else
1330	break;
1331
1332	} /* for */
1333
1334	if (RT_FAILURE(rc))
1335	{
1336	switch (rc)
1337	{
1338	case VERR_NET_CONNECTION_RESET_BY_PEER:
1339	{
1340	LogFunc(("Client closed the connection\n"));
1341	rc = VINF_SUCCESS;
1342	break;
1343	}
1344
1345	default:
1346	LogFunc(("Client processing failed with %Rrc\n", rc));
1347	break;
1348	}
1349	}
1350
1351	LogFlowFuncLeaveRC(rc);
1352	return rc;
1353	}
1354
1355	/**
1356	* Per-client thread for serving the server's control connection.
1357	*
1358	* @returns VBox status code.
1359	* @param hSocket Socket handle to use for the control connection.
1360	* @param pvUser User-provided arguments. Of type PRTHTTPSERVERINTERNAL.
1361	*/
1362	static DECLCALLBACK(int) rtHttpServerClientThread(RTSOCKET hSocket, void *pvUser)
1363	{
1364	PRTHTTPSERVERINTERNAL pThis = (PRTHTTPSERVERINTERNAL)pvUser;
1365	RTHTTPSERVER_VALID_RETURN(pThis);
1366
1367	LogFlowFuncEnter();
1368
1369	RTHTTPSERVERCLIENT Client;
1370	RT_ZERO(Client);
1371
1372	Client.pServer = pThis;
1373	Client.hSocket = hSocket;
1374
1375	return rtHttpServerClientMain(&Client);
1376	}
1377
1378	RTR3DECL(int) RTHttpServerCreate(PRTHTTPSERVER hHttpServer, const char *pszAddress, uint16_t uPort,
1379	PRTHTTPSERVERCALLBACKS pCallbacks, void *pvUser, size_t cbUser)
1380	{
1381	AssertPtrReturn(hHttpServer, VERR_INVALID_POINTER);
1382	AssertPtrReturn(pszAddress, VERR_INVALID_POINTER);
1383	AssertReturn (uPort, VERR_INVALID_PARAMETER);
1384	AssertPtrReturn(pCallbacks, VERR_INVALID_POINTER);
1385	/* pvUser is optional. */
1386
1387	int rc;
1388
1389	PRTHTTPSERVERINTERNAL pThis = (PRTHTTPSERVERINTERNAL)RTMemAllocZ(sizeof(RTHTTPSERVERINTERNAL));
1390	if (pThis)
1391	{
1392	pThis->u32Magic = RTHTTPSERVER_MAGIC;
1393	pThis->Callbacks = *pCallbacks;
1394	pThis->pvUser = pvUser;
1395	pThis->cbUser = cbUser;
1396
1397	rc = RTTcpServerCreate(pszAddress, uPort, RTTHREADTYPE_DEFAULT, "httpsrv",
1398	rtHttpServerClientThread, pThis /* pvUser */, &pThis->pTCPServer);
1399	if (RT_SUCCESS(rc))
1400	{
1401	*hHttpServer = (RTHTTPSERVER)pThis;
1402	}
1403	}
1404	else
1405	rc = VERR_NO_MEMORY;
1406
1407	return rc;
1408	}
1409
1410	RTR3DECL(int) RTHttpServerDestroy(RTHTTPSERVER hHttpServer)
1411	{
1412	if (hHttpServer == NIL_RTHTTPSERVER)
1413	return VINF_SUCCESS;
1414
1415	PRTHTTPSERVERINTERNAL pThis = hHttpServer;
1416	RTHTTPSERVER_VALID_RETURN(pThis);
1417
1418	AssertPtr(pThis->pTCPServer);
1419
1420	int rc = VINF_SUCCESS;
1421
1422	PRTHTTPSERVERCALLBACKS pCallbacks = &pThis->Callbacks;
1423	if (pCallbacks->pfnDestroy)
1424	{
1425	RTHTTPCALLBACKDATA Data = { NULL /* pClient */, pThis->pvUser, pThis->cbUser };
1426	rc = pCallbacks->pfnDestroy(&Data);
1427	}
1428
1429	if (RT_SUCCESS(rc))
1430	{
1431	rc = RTTcpServerDestroy(pThis->pTCPServer);
1432	if (RT_SUCCESS(rc))
1433	{
1434	pThis->u32Magic = RTHTTPSERVER_MAGIC_DEAD;
1435
1436	RTMemFree(pThis);
1437	}
1438	}
1439
1440	return rc;
1441	}

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source: vbox/trunk/src/VBox/Runtime/r3/http-server.cpp@ 92258

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