slirp.h@ 41800

Last change on this file since 41800 was 39287, checked in by vboxsync, 13 years ago
NAT: "sending to home" on wide cast and cloning udp sockets. Both disabled.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 12.3 KB

Line
1	/* $Id: slirp.h 39287 2011-11-14 09:41:52Z vboxsync $ */
2	/** @file
3	* NAT - slirp (declarations/defines).
4	*/
5
6	/*
7	* Copyright (C) 2006-2010 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 <winsock2.h>
25	# include <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 <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 <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	# endif
91	# define EWOULDBLOCK WSAEWOULDBLOCK
92	# define EINPROGRESS WSAEINPROGRESS
93	# define ENOTCONN WSAENOTCONN
94	# define EHOSTUNREACH WSAEHOSTUNREACH
95	# define ENETUNREACH WSAENETUNREACH
96	# define ECONNREFUSED WSAECONNREFUSED
97
98	typedef uint8_t u_int8_t;
99	typedef uint16_t u_int16_t;
100	typedef uint32_t u_int32_t;
101
102	#else /* !RT_OS_WINDOWS */
103
104	# define ioctlsocket ioctl
105	# define closesocket(s) close(s)
106	# define O_BINARY 0
107
108	#endif /* !RT_OS_WINDOWS */
109
110	#if defined(RT_OS_WINDOWS) \|\| defined (RT_OS_SOLARIS)
111	typedef uint64_t u_int64_t;
112	typedef char *caddr_t;
113	#endif
114
115	#include <sys/types.h>
116	#ifdef HAVE_SYS_BITYPES_H
117	# include <sys/bitypes.h>
118	#endif
119
120	#ifdef _MSC_VER
121	# include <time.h>
122	#else /* !_MSC_VER */
123	# include <sys/time.h>
124	#endif /* !_MSC_VER */
125
126	#ifdef NEED_TYPEDEFS
127	typedef char int8_t;
128	typedef unsigned char u_int8_t;
129
130	# if SIZEOF_SHORT == 2
131	typedef short int16_t;
132	typedef unsigned short u_int16_t;
133	# else
134	# if SIZEOF_INT == 2
135	typedef int int16_t;
136	typedef unsigned int u_int16_t;
137	# else
138	#error Cannot find a type with sizeof() == 2
139	# endif
140	# endif
141
142	# if SIZEOF_SHORT == 4
143	typedef short int32_t;
144	typedef unsigned short u_int32_t;
145	# else
146	# if SIZEOF_INT == 4
147	typedef int int32_t;
148	typedef unsigned int u_int32_t;
149	# else
150	#error Cannot find a type with sizeof() == 4
151	# endif
152	# endif
153	#endif /* NEED_TYPEDEFS */
154
155	#ifdef HAVE_UNISTD_H
156	# include <unistd.h>
157	#endif
158
159	#ifdef HAVE_STDLIB_H
160	# include <stdlib.h>
161	#endif
162
163	#include <errno.h>
164
165
166	#ifndef HAVE_MEMMOVE
167	# define memmove(x, y, z) bcopy(y, x, z)
168	#endif
169
170	#if TIME_WITH_SYS_TIME
171	# include <sys/time.h>
172	# include <time.h>
173	#else
174	# if HAVE_SYS_TIME_H
175	# include <sys/time.h>
176	# else
177	# include <time.h>
178	# endif
179	#endif
180
181	#ifdef HAVE_STRING_H
182	# include <string.h>
183	#else
184	# include <strings.h>
185	#endif
186
187	#ifndef RT_OS_WINDOWS
188	# include <sys/uio.h>
189	#endif
190
191	#ifndef RT_OS_WINDOWS
192	# include <netinet/in.h>
193	# include <arpa/inet.h>
194	#endif
195
196	#ifdef GETTIMEOFDAY_ONE_ARG
197	# define gettimeofday(x, y) gettimeofday(x)
198	#endif
199
200	#ifndef HAVE_INET_ATON
201	int inet_aton (const char cp, struct in_addr ia);
202	#endif
203
204	#include <fcntl.h>
205	#ifndef NO_UNIX_SOCKETS
206	# include <sys/un.h>
207	#endif
208	#include <signal.h>
209	#ifdef HAVE_SYS_SIGNAL_H
210	# include <sys/signal.h>
211	#endif
212	#ifndef RT_OS_WINDOWS
213	# include <sys/socket.h>
214	#endif
215
216	#if defined(HAVE_SYS_IOCTL_H)
217	# include <sys/ioctl.h>
218	#endif
219
220	#ifdef HAVE_SYS_SELECT_H
221	# include <sys/select.h>
222	#endif
223
224	#ifdef HAVE_SYS_WAIT_H
225	# include <sys/wait.h>
226	#endif
227
228	#ifdef HAVE_SYS_FILIO_H
229	# include <sys/filio.h>
230	#endif
231
232	#if defined(__STDC__) \|\| defined(_MSC_VER)
233	# include <stdarg.h>
234	#else
235	# include <varargs.h>
236	#endif
237
238	#include <sys/stat.h>
239
240	/* Avoid conflicting with the libc insque() and remque(), which
241	* have different prototypes. */
242	#define insque slirp_insque
243	#define remque slirp_remque
244
245	#ifdef HAVE_SYS_STROPTS_H
246	# include <sys/stropts.h>
247	#endif
248
249	#include "libslirp.h"
250
251	#include "debug.h"
252
253	#include "ip.h"
254	#include "tcp.h"
255	#include "tcp_timer.h"
256	#include "tcp_var.h"
257	#include "tcpip.h"
258	#include "udp.h"
259	#include "icmp_var.h"
260	#include "mbuf.h"
261	#include "if.h"
262	#include "sbuf.h"
263	#include "socket.h"
264	#include "main.h"
265	#include "misc.h"
266	#include "ctl.h"
267	#include "bootp.h"
268	#include "tftp.h"
269
270	#include "slirp_state.h"
271
272	#undef PVM /* XXX Mac OS X hack */
273
274	#ifndef NULL
275	# define NULL (void *)0
276	#endif
277
278	void if_start (PNATState);
279
280	#ifndef HAVE_INDEX
281	char index (const char , int);
282	#endif
283
284	#ifndef HAVE_GETHOSTID
285	long gethostid (void);
286	#endif
287
288	#ifndef RT_OS_WINDOWS
289	#include <netdb.h>
290	#endif
291
292	#include "dnsproxy/dnsproxy.h"
293
294	#define DEFAULT_BAUD 115200
295
296	int get_dns_addr(PNATState pData);
297
298	/* cksum.c */
299	typedef uint16_t u_short;
300	typedef unsigned int u_int;
301	#include "in_cksum.h"
302
303	/* if.c */
304	void if_init (PNATState);
305	void if_output (PNATState, struct socket , struct mbuf );
306
307	/* ip_input.c */
308	void ip_init (PNATState);
309	void ip_input (PNATState, struct mbuf *);
310	struct mbuf * ip_reass (PNATState, register struct mbuf *);
311	void ip_freef (PNATState, struct ipqhead , struct ipq_t );
312	void ip_slowtimo (PNATState);
313	void ip_stripoptions (register struct mbuf , struct mbuf );
314
315	/* ip_output.c */
316	int ip_output (PNATState, struct socket , struct mbuf );
317	int ip_output0 (PNATState, struct socket , struct mbuf , int urg);
318
319	/* tcp_input.c */
320	int tcp_reass (PNATState, struct tcpcb , struct tcphdr , int , struct mbuf );
321	void tcp_input (PNATState, register struct mbuf , int, struct socket );
322	void tcp_dooptions (PNATState, struct tcpcb , u_char , int, struct tcpiphdr *);
323	void tcp_xmit_timer (PNATState, register struct tcpcb *, int);
324	int tcp_mss (PNATState, register struct tcpcb *, u_int);
325
326	/* tcp_output.c */
327	int tcp_output (PNATState, register struct tcpcb *);
328	void tcp_setpersist (register struct tcpcb *);
329
330	/* tcp_subr.c */
331	void tcp_init (PNATState);
332	void tcp_template (struct tcpcb *);
333	void tcp_respond (PNATState, struct tcpcb , register struct tcpiphdr , register struct mbuf *, tcp_seq, tcp_seq, int);
334	struct tcpcb * tcp_newtcpcb (PNATState, struct socket *);
335	struct tcpcb * tcp_close (PNATState, register struct tcpcb *);
336	void tcp_drain (void);
337	void tcp_sockclosed (PNATState, struct tcpcb *);
338	int tcp_fconnect (PNATState, struct socket *);
339	void tcp_connect (PNATState, struct socket *);
340	int tcp_attach (PNATState, struct socket *);
341	u_int8_t tcp_tos (struct socket *);
342	int tcp_ctl (PNATState, struct socket *);
343	struct tcpcb tcp_drop(PNATState, struct tcpcb tp, int err);
344
345	/slirp.c/
346	void slirp_arp_who_has(PNATState pData, uint32_t dst);
347	int slirp_arp_cache_update_or_add(PNATState pData, uint32_t dst, const uint8_t *mac);
348	int slirp_init_dns_list(PNATState pData);
349	void slirp_release_dns_list(PNATState pData);
350	#define MIN_MRU 128
351	#define MAX_MRU 16384
352
353	#ifndef RT_OS_WINDOWS
354	# define min(x, y) ((x) < (y) ? (x) : (y))
355	# define max(x, y) ((x) > (y) ? (x) : (y))
356	#endif
357
358	#ifdef RT_OS_WINDOWS
359	# undef errno
360	# if 0 /* debugging */
361	int errno_func(const char *file, int line);
362	# define errno (errno_func(__FILE__, __LINE__))
363	# else
364	# define errno (WSAGetLastError())
365	# endif
366	#endif
367
368	# define ETH_ALEN 6
369	# define ETH_HLEN 14
370
371	# define ARPOP_REQUEST 1 /* ARP request */
372	# define ARPOP_REPLY 2 /* ARP reply */
373
374	struct ethhdr
375	{
376	unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
377	unsigned char h_source[ETH_ALEN]; /* source ether addr */
378	unsigned short h_proto; /* packet type ID field */
379	};
380	AssertCompileSize(struct ethhdr, 14);
381
382	/*
383	* (vvl) externing of sscanf.
384	*/
385	int sscanf(const char s, const char format, ...);
386
387	#if defined(VBOX_SLIRP_ALIAS) \|\| defined(VBOX_SLIRP_BSD)
388
389	# define ip_next(ip) (void )((uint8_t )(ip) + ((ip)->ip_hl << 2))
390	# define udp_next(udp) (void )((uint8_t )&((struct udphdr *)(udp))[1])
391	# define bcopy(src, dst, len) memcpy((dst), (src), (len))
392	# define bcmp(a1, a2, len) memcmp((a1), (a2), (len))
393	# define NO_FW_PUNCH
394
395	# ifdef alias_addr
396	# ifndef VBOX_SLIRP_BSD
397	# error alias_addr has already defined!!!
398	# else
399	# undef alias_addr
400	# endif
401	# endif
402
403	# define arc4random() RTRandU32()
404	# undef malloc
405	# undef calloc
406	# undef free
407	# define malloc(x) RTMemAlloc((x))
408	# define calloc(x, n) RTMemAllocZ((x)*(n))
409	# define free(x) RTMemFree((x))
410	# ifndef __unused
411	# define __unused
412	# endif
413
414	# define strncasecmp RTStrNICmp
415	# define stderr NULL
416	# define stdout NULL
417
418	# ifdef VBOX_WITH_DEBUG_LIBALIAS
419	# define LIBALIAS_DEBUG
420	# endif
421
422	# define fflush(x) do{} while(0)
423	# include "ext.h"
424	#endif /VBOX_SLIRP_ALIAS/
425
426	/**
427	* @todo might be useful to make it configurable, especially in terms of Intnet behind NAT
428	*/
429	# define maxusers 32
430	# define max_protohdr 0
431	/**
432	* @todo (vvl) for now ignore these values, later perhaps initialize tuning parameters
433	*/
434	# define TUNABLE_INT_FETCH(name, pval) do { } while (0)
435	# define SYSCTL_PROC(a0, a1, a2, a3, a4, a5, a6, a7, a8) const int dummy_ ## a6 = 0
436	# define SYSCTL_STRUCT(a0, a1, a2, a3, a4, a5, a6) const int dummy_ ## a5 = 0
437	# define SYSINIT(a0, a1, a2, a3, a4) const int dummy_ ## a3 = 0
438	# define sysctl_handle_int(a0, a1, a2, a3) 0
439	# define EVENTHANDLER_INVOKE(a) do{}while(0)
440	# define EVENTHANDLER_REGISTER(a0, a1, a2, a3) do{}while(0)
441	# define KASSERT AssertMsg
442
443	struct dummy_req
444	{
445	void *newptr;
446	};
447
448	#define SYSCTL_HANDLER_ARGS PNATState pData, void oidp, struct dummy_req req
449
450	void mbuf_init(void *);
451	# define cksum(m, len) in_cksum_skip((m), (len), 0)
452
453	int ftp_alias_load(PNATState);
454	int ftp_alias_unload(PNATState);
455	int nbt_alias_load(PNATState);
456	int nbt_alias_unload(PNATState);
457	int dns_alias_load(PNATState);
458	int dns_alias_unload(PNATState);
459	int slirp_arp_lookup_ip_by_ether(PNATState, const uint8_t , uint32_t );
460	int slirp_arp_lookup_ether_by_ip(PNATState, uint32_t, uint8_t *);
461
462	static inline size_t slirp_size(PNATState pData)
463	{
464	if (if_mtu < MSIZE)
465	return MCLBYTES;
466	else if (if_mtu < MCLBYTES)
467	return MCLBYTES;
468	else if (if_mtu < MJUM9BYTES)
469	return MJUM9BYTES;
470	else if (if_mtu < MJUM16BYTES)
471	return MJUM16BYTES;
472	else
473	AssertMsgFailed(("Unsupported size"));
474	return 0;
475	}
476
477	static inline bool slirpMbufTagService(PNATState pData, struct mbuf *m, uint8_t u8ServiceId)
478	{
479	struct m_tag * t = NULL;
480	NOREF(pData);
481	/* if_encap assumes that all packets goes through aliased address(gw) */
482	if (u8ServiceId == CTL_ALIAS)
483	return true;
484	t = m_tag_get(PACKET_SERVICE, sizeof(uint8_t), 0);
485	if (!t)
486	return false;
487	(uint8_t )&t[1] = u8ServiceId;
488	m_tag_prepend(m, t);
489	return true;
490	}
491
492	/**
493	* This function tags mbuf allocated for special services.
494	* @todo: add service id verification.
495	*/
496	static inline struct mbuf *slirpServiceMbufAlloc(PNATState pData, uint8_t u8ServiceId)
497	{
498	struct mbuf *m = NULL;
499	m = m_getcl(pData, M_DONTWAIT, MT_HEADER, M_PKTHDR);
500	if (!m)
501	return m;
502	if(!slirpMbufTagService(pData, m, u8ServiceId))
503	{
504	m_freem(pData, m);
505	return NULL;
506	}
507	return m;
508	}
509
510	static inline struct mbuf *slirpTftpMbufAlloc(PNATState pData)
511	{
512	return slirpServiceMbufAlloc(pData, CTL_TFTP);
513	}
514	static inline struct mbuf *slirpDnsMbufAlloc(PNATState pData)
515	{
516	return slirpServiceMbufAlloc(pData, CTL_DNS);
517	}
518
519	DECLINLINE(bool) slirpIsWideCasting(PNATState pData, uint32_t u32Addr)
520	{
521	bool fWideCasting = false;
522	LogFlowFunc(("Enter: u32Addr:%RTnaipv4\n", u32Addr));
523	fWideCasting = ( u32Addr == INADDR_BROADCAST
524	\|\| (u32Addr & RT_H2N_U32_C(~pData->netmask)) == RT_H2N_U32_C(~pData->netmask));
525	LogFlowFunc(("Leave: %RTbool\n", fWideCasting));
526	return fWideCasting;
527	}
528	#endif
529

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source: vbox/trunk/src/VBox/Devices/Network/slirp/slirp.h@ 41800

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