slirp.h@ 64536

Last change on this file since 64536 was 64536, checked in by vboxsync, 8 years ago
NAT: provide standard names for shutdown(2) "how" argument on Windows.
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1	/* $Id: slirp.h 64536 2016-11-03 15:39:17Z vboxsync $ */
2	/** @file
3	* NAT - slirp (declarations/defines).
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 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	#ifndef __COMMON_H__
19	#define __COMMON_H__
20
21	#include <VBox/vmm/stam.h>
22
23	#ifdef RT_OS_WINDOWS
24	# include <iprt/win/winsock2.h>
25	# include <iprt/win/ws2tcpip.h>
26	typedef int socklen_t;
27	#endif
28	#ifdef RT_OS_OS2 /* temporary workaround, see ticket #127 */
29	# define mbstat mbstat_os2
30	# include <sys/socket.h>
31	# undef mbstat
32	typedef int socklen_t;
33	#endif
34
35	#define CONFIG_QEMU
36
37	#ifdef DEBUG
38	# undef DEBUG
39	# define DEBUG 1
40	#endif
41
42	#ifndef CONFIG_QEMU
43	# include "version.h"
44	#endif
45	#define LOG_GROUP LOG_GROUP_DRV_NAT
46	#include <VBox/log.h>
47	#include <iprt/mem.h>
48	#ifdef RT_OS_WINDOWS
49	# include <iprt/win/windows.h>
50	# include <io.h>
51	#endif
52	#include <iprt/asm.h>
53	#include <iprt/assert.h>
54	#include <iprt/string.h>
55	#include <iprt/dir.h>
56	#include <iprt/rand.h>
57	#include <iprt/net.h>
58	#include <VBox/types.h>
59
60	#undef malloc
61	#define malloc dont_use_malloc
62	#undef free
63	#define free dont_use_free
64	#undef realloc
65	#define realloc dont_use_realloc
66	#undef strdup
67	#define strdup dont_use_strdup
68
69	#include "slirp_config.h"
70
71	#ifdef RT_OS_WINDOWS
72
73	# ifndef _MSC_VER
74	# include <inttypes.h>
75	# endif
76
77
78	# include <sys/timeb.h>
79	# include <iprt/win/iphlpapi.h>
80
81	/* We don't want the errno.h versions of these error defines. */
82	# if defined(_MSC_VER) && _MSC_VER >= 1600
83	# include <errno.h>
84	# undef EWOULDBLOCK
85	# undef EINPROGRESS
86	# undef ENOTCONN
87	# undef EHOSTUNREACH
88	# undef ENETUNREACH
89	# undef ECONNREFUSED
90	# undef ECONNRESET
91	# undef EHOSTDOWN
92	# undef ENETDOWN
93	# endif
94	# define EWOULDBLOCK WSAEWOULDBLOCK
95	# define EINPROGRESS WSAEINPROGRESS
96	# define ENOTCONN WSAENOTCONN
97	# define EHOSTUNREACH WSAEHOSTUNREACH
98	# define ENETUNREACH WSAENETUNREACH
99	# define ECONNREFUSED WSAECONNREFUSED
100	# define ECONNRESET WSAECONNRESET
101	# define EHOSTDOWN WSAEHOSTDOWN
102	# define ENETDOWN WSAENETDOWN
103
104	/* standard names for the shutdown() "how" argument */
105	#define SHUT_RD SD_RECEIVE
106	#define SHUT_WR SD_SEND
107	#define SHUT_RDWR SD_BOTH
108
109	typedef uint8_t u_int8_t;
110	typedef uint16_t u_int16_t;
111	typedef uint32_t u_int32_t;
112
113	#else /* !RT_OS_WINDOWS */
114
115	# define ioctlsocket ioctl
116	# define closesocket(s) close(s)
117	# define O_BINARY 0
118
119	#endif /* !RT_OS_WINDOWS */
120
121	#if defined(RT_OS_WINDOWS) \|\| defined (RT_OS_SOLARIS)
122	typedef uint64_t u_int64_t;
123	typedef char *caddr_t;
124	#endif
125
126	#include <sys/types.h>
127	#ifdef HAVE_SYS_BITYPES_H
128	# include <sys/bitypes.h>
129	#endif
130
131	#ifdef _MSC_VER
132	# include <time.h>
133	#else /* !_MSC_VER */
134	# include <sys/time.h>
135	#endif /* !_MSC_VER */
136
137	#ifdef NEED_TYPEDEFS
138	typedef char int8_t;
139	typedef unsigned char u_int8_t;
140
141	# if SIZEOF_SHORT == 2
142	typedef short int16_t;
143	typedef unsigned short u_int16_t;
144	# else
145	# if SIZEOF_INT == 2
146	typedef int int16_t;
147	typedef unsigned int u_int16_t;
148	# else
149	#error Cannot find a type with sizeof() == 2
150	# endif
151	# endif
152
153	# if SIZEOF_SHORT == 4
154	typedef short int32_t;
155	typedef unsigned short u_int32_t;
156	# else
157	# if SIZEOF_INT == 4
158	typedef int int32_t;
159	typedef unsigned int u_int32_t;
160	# else
161	#error Cannot find a type with sizeof() == 4
162	# endif
163	# endif
164	#endif /* NEED_TYPEDEFS */
165
166	#ifdef HAVE_UNISTD_H
167	# include <unistd.h>
168	#endif
169
170	#ifdef HAVE_STDLIB_H
171	# include <stdlib.h>
172	#endif
173
174	#include <errno.h>
175
176
177	#ifndef HAVE_MEMMOVE
178	# define memmove(x, y, z) bcopy(y, x, z)
179	#endif
180
181	#if TIME_WITH_SYS_TIME
182	# include <sys/time.h>
183	# include <time.h>
184	#else
185	# ifndef HAVE_SYS_TIME_H
186	# define HAVE_SYS_TIME_H 0
187	# endif
188	# if HAVE_SYS_TIME_H
189	# include <sys/time.h>
190	# else
191	# include <time.h>
192	# endif
193	#endif
194
195	#ifdef HAVE_STRING_H
196	# include <string.h>
197	#else
198	# include <strings.h>
199	#endif
200
201	#ifndef RT_OS_WINDOWS
202	# include <sys/uio.h>
203	#endif
204
205	#ifndef RT_OS_WINDOWS
206	# include <netinet/in.h>
207	# include <arpa/inet.h>
208	#endif
209
210	#ifdef GETTIMEOFDAY_ONE_ARG
211	# define gettimeofday(x, y) gettimeofday(x)
212	#endif
213
214	#ifndef HAVE_INET_ATON
215	int inet_aton (const char cp, struct in_addr ia);
216	#endif
217
218	#include <fcntl.h>
219	#ifndef NO_UNIX_SOCKETS
220	# include <sys/un.h>
221	#endif
222	#include <signal.h>
223	#ifdef HAVE_SYS_SIGNAL_H
224	# include <sys/signal.h>
225	#endif
226	#ifndef RT_OS_WINDOWS
227	# include <sys/socket.h>
228	#endif
229
230	#if defined(HAVE_SYS_IOCTL_H)
231	# include <sys/ioctl.h>
232	#endif
233
234	#ifdef HAVE_SYS_SELECT_H
235	# include <sys/select.h>
236	#endif
237
238	#ifdef HAVE_SYS_WAIT_H
239	# include <sys/wait.h>
240	#endif
241
242	#ifdef HAVE_SYS_FILIO_H
243	# include <sys/filio.h>
244	#endif
245
246	#if defined(__STDC__) \|\| defined(_MSC_VER)
247	# include <stdarg.h>
248	#else
249	# include <varargs.h>
250	#endif
251
252	#include <sys/stat.h>
253
254	/* Avoid conflicting with the libc insque() and remque(), which
255	* have different prototypes. */
256	#define insque slirp_insque
257	#define remque slirp_remque
258
259	#ifdef HAVE_SYS_STROPTS_H
260	# include <sys/stropts.h>
261	#endif
262
263	#include "libslirp.h"
264
265	#include "debug.h"
266
267	#include "ip.h"
268	#include "tcp.h"
269	#include "tcp_timer.h"
270	#include "tcp_var.h"
271	#include "tcpip.h"
272	#include "udp.h"
273	#include "icmp_var.h"
274	#include "mbuf.h"
275	#include "if.h"
276	#include "sbuf.h"
277	#include "socket.h"
278	#include "main.h"
279	#include "misc.h"
280	#include "ctl.h"
281	#include "bootp.h"
282	#include "tftp.h"
283
284	#include "slirp_state.h"
285	#include "slirp_dns.h"
286
287	#undef PVM /* XXX Mac OS X hack */
288
289	#ifndef NULL
290	# define NULL (void *)0
291	#endif
292
293	void if_start (PNATState);
294
295	#ifndef HAVE_INDEX
296	char index (const char , int);
297	#endif
298
299	#ifndef HAVE_GETHOSTID
300	long gethostid (void);
301	#endif
302
303	#ifndef RT_OS_WINDOWS
304	#include <netdb.h>
305	#endif
306
307	#include "dnsproxy/dnsproxy.h"
308
309	#define DEFAULT_BAUD 115200
310
311	int get_dns_addr(PNATState pData);
312
313	/* cksum.c */
314	typedef uint16_t u_short;
315	typedef unsigned int u_int;
316	#include "in_cksum.h"
317
318	/* if.c */
319	void if_init (PNATState);
320	void if_output (PNATState, struct socket , struct mbuf );
321
322	/* ip_input.c */
323	void ip_init (PNATState);
324	void ip_input (PNATState, struct mbuf *);
325	struct mbuf * ip_reass (PNATState, register struct mbuf *);
326	void ip_freef (PNATState, struct ipqhead , struct ipq_t );
327	void ip_slowtimo (PNATState);
328	void ip_stripoptions (register struct mbuf , struct mbuf );
329
330	/* ip_output.c */
331	int ip_output (PNATState, struct socket , struct mbuf );
332	int ip_output0 (PNATState, struct socket , struct mbuf , int urg);
333
334	/* tcp_input.c */
335	int tcp_reass (PNATState, struct tcpcb , struct tcphdr , int , struct mbuf );
336	void tcp_input (PNATState, register struct mbuf , int, struct socket );
337	void tcp_fconnect_failed(PNATState, struct socket *, int);
338	void tcp_dooptions (PNATState, struct tcpcb , u_char , int, struct tcpiphdr *);
339	void tcp_xmit_timer (PNATState, register struct tcpcb *, int);
340	int tcp_mss (PNATState, register struct tcpcb *, u_int);
341
342	/* tcp_output.c */
343	int tcp_output (PNATState, register struct tcpcb *);
344	void tcp_setpersist (register struct tcpcb *);
345
346	/* tcp_subr.c */
347	void tcp_init (PNATState);
348	void tcp_template (struct tcpcb *);
349	void tcp_respond (PNATState, struct tcpcb , register struct tcpiphdr , register struct mbuf *, tcp_seq, tcp_seq, int);
350	struct tcpcb * tcp_newtcpcb (PNATState, struct socket *);
351	struct tcpcb * tcp_close (PNATState, register struct tcpcb *);
352	void tcp_drain (void);
353	void tcp_sockclosed (PNATState, struct tcpcb *);
354	int tcp_fconnect (PNATState, struct socket *);
355	void tcp_connect (PNATState, struct socket *);
356	int tcp_attach (PNATState, struct socket *);
357	u_int8_t tcp_tos (struct socket *);
358	int tcp_ctl (PNATState, struct socket *);
359	struct tcpcb tcp_drop(PNATState, struct tcpcb tp, int err);
360
361	/* hostres.c */
362	struct mbuf hostresolver(PNATState, struct mbuf , uint32_t src, uint16_t sport);
363
364	/slirp.c/
365	void slirp_arp_who_has(PNATState pData, uint32_t dst);
366	int slirp_arp_cache_update_or_add(PNATState pData, uint32_t dst, const uint8_t *mac);
367	int slirp_init_dns_list(PNATState pData);
368	void slirp_release_dns_list(PNATState pData);
369	#define MIN_MRU 128
370	#define MAX_MRU 16384
371
372	#ifndef RT_OS_WINDOWS
373	# define min(x, y) ((x) < (y) ? (x) : (y))
374	# define max(x, y) ((x) > (y) ? (x) : (y))
375	#endif
376
377	#ifdef RT_OS_WINDOWS
378	# undef errno
379	# if 0 /* debugging */
380	int errno_func(const char *file, int line);
381	# define errno (errno_func(__FILE__, __LINE__))
382	# else
383	# define errno (WSAGetLastError())
384	# endif
385	#endif
386
387	# define ETH_ALEN 6
388	# define ETH_HLEN 14
389
390	# define ARPOP_REQUEST 1 /* ARP request */
391	# define ARPOP_REPLY 2 /* ARP reply */
392
393	struct ethhdr
394	{
395	unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
396	unsigned char h_source[ETH_ALEN]; /* source ether addr */
397	unsigned short h_proto; /* packet type ID field */
398	};
399	AssertCompileSize(struct ethhdr, 14);
400
401	/*
402	* (vvl) externing of sscanf.
403	*/
404	int sscanf(const char s, const char format, ...);
405
406	#if defined(VBOX_SLIRP_ALIAS) \|\| defined(VBOX_SLIRP_BSD)
407
408	# define ip_next(ip) (void )((uint8_t )(ip) + ((ip)->ip_hl << 2))
409	# define udp_next(udp) (void )((uint8_t )&((struct udphdr *)(udp))[1])
410	# define bcopy(src, dst, len) memcpy((dst), (src), (len))
411	# define bcmp(a1, a2, len) memcmp((a1), (a2), (len))
412	# define NO_FW_PUNCH
413	/* Two wrongs don't make a right, but this at least averts harm. */
414	# define NO_USE_SOCKETS
415
416	# ifdef alias_addr
417	# ifndef VBOX_SLIRP_BSD
418	# error alias_addr has already defined!!!
419	# else
420	# undef alias_addr
421	# endif
422	# endif
423
424	# define arc4random() RTRandU32()
425	# undef malloc
426	# undef calloc
427	# undef free
428	# define malloc(x) RTMemAlloc((x))
429	# define calloc(x, n) RTMemAllocZ((x)*(n))
430	# define free(x) RTMemFree((x))
431	# ifndef __unused
432	# define __unused
433	# endif
434
435	# define strncasecmp RTStrNICmp
436	# define stderr NULL
437	# define stdout NULL
438
439	# ifdef VBOX_WITH_DEBUG_LIBALIAS
440	# define LIBALIAS_DEBUG
441	# endif
442
443	# define fflush(x) do{} while(0)
444	# include "ext.h"
445	#endif /VBOX_SLIRP_ALIAS/
446
447	/**
448	* @todo might be useful to make it configurable, especially in terms of Intnet behind NAT
449	*/
450	# define maxusers 32
451	# define max_protohdr 0
452	/**
453	* @todo (vvl) for now ignore these values, later perhaps initialize tuning parameters
454	*/
455	# define TUNABLE_INT_FETCH(name, pval) do { } while (0)
456	# define SYSCTL_PROC(a0, a1, a2, a3, a4, a5, a6, a7, a8) const int dummy_ ## a6 = 0
457	# define SYSCTL_STRUCT(a0, a1, a2, a3, a4, a5, a6) const int dummy_ ## a5 = 0
458	# define SYSINIT(a0, a1, a2, a3, a4) const int dummy_ ## a3 = 0
459	# define sysctl_handle_int(a0, a1, a2, a3) 0
460	# define EVENTHANDLER_INVOKE(a) do{}while(0)
461	# define EVENTHANDLER_REGISTER(a0, a1, a2, a3) do{}while(0)
462	# define KASSERT AssertMsg
463
464	struct dummy_req
465	{
466	void *newptr;
467	};
468
469	#define SYSCTL_HANDLER_ARGS PNATState pData, void oidp, struct dummy_req req
470
471	void mbuf_init(void *);
472	# define cksum(m, len) in_cksum_skip((m), (len), 0)
473
474	int ftp_alias_load(PNATState);
475	int ftp_alias_unload(PNATState);
476	int nbt_alias_load(PNATState);
477	int nbt_alias_unload(PNATState);
478	int slirp_arp_lookup_ip_by_ether(PNATState, const uint8_t , uint32_t );
479	int slirp_arp_lookup_ether_by_ip(PNATState, uint32_t, uint8_t *);
480
481	DECLINLINE(unsigned) slirp_size(PNATState pData)
482	{
483	if (if_mtu < MSIZE)
484	return MCLBYTES;
485	else if (if_mtu < MCLBYTES)
486	return MCLBYTES;
487	else if (if_mtu < MJUM9BYTES)
488	return MJUM9BYTES;
489	else if (if_mtu < MJUM16BYTES)
490	return MJUM16BYTES;
491	else
492	AssertMsgFailed(("Unsupported size"));
493	return 0;
494	}
495
496	static inline bool slirpMbufTagService(PNATState pData, struct mbuf *m, uint8_t u8ServiceId)
497	{
498	struct m_tag * t = NULL;
499	NOREF(pData);
500	/* if_encap assumes that all packets goes through aliased address(gw) */
501	if (u8ServiceId == CTL_ALIAS)
502	return true;
503	t = m_tag_get(PACKET_SERVICE, sizeof(uint8_t), 0);
504	if (!t)
505	return false;
506	(uint8_t )&t[1] = u8ServiceId;
507	m_tag_prepend(m, t);
508	return true;
509	}
510
511	/**
512	* This function tags mbuf allocated for special services.
513	* @todo: add service id verification.
514	*/
515	static inline struct mbuf *slirpServiceMbufAlloc(PNATState pData, uint8_t u8ServiceId)
516	{
517	struct mbuf *m = NULL;
518	m = m_getcl(pData, M_DONTWAIT, MT_HEADER, M_PKTHDR);
519	if (!m)
520	return m;
521	if(!slirpMbufTagService(pData, m, u8ServiceId))
522	{
523	m_freem(pData, m);
524	return NULL;
525	}
526	return m;
527	}
528
529	static inline struct mbuf *slirpTftpMbufAlloc(PNATState pData)
530	{
531	return slirpServiceMbufAlloc(pData, CTL_TFTP);
532	}
533	static inline struct mbuf *slirpDnsMbufAlloc(PNATState pData)
534	{
535	return slirpServiceMbufAlloc(pData, CTL_DNS);
536	}
537
538	DECLINLINE(bool) slirpIsWideCasting(PNATState pData, uint32_t u32Addr)
539	{
540	bool fWideCasting;
541	LogFlowFunc(("Enter: u32Addr:%RTnaipv4\n", u32Addr));
542	fWideCasting = ( u32Addr == INADDR_BROADCAST
543	\|\| (u32Addr & RT_H2N_U32_C(~pData->netmask)) == RT_H2N_U32_C(~pData->netmask));
544	LogFlowFunc(("Leave: %RTbool\n", fWideCasting));
545	return fWideCasting;
546	}
547	#endif
548

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source: vbox/trunk/src/VBox/Devices/Network/slirp/slirp.h@ 64536

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