aboutsummaryrefslogtreecommitdiff
path: root/slirp/slirp.h
blob: 22058cd05e82fa174d921f51f76be78c168b2388 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
#ifndef __COMMON_H__
#define __COMMON_H__

#include "config-host.h"
#include "slirp_config.h"

#ifdef _WIN32
# include <inttypes.h>

typedef uint8_t u_int8_t;
typedef uint16_t u_int16_t;
typedef uint32_t u_int32_t;
typedef uint64_t u_int64_t;
typedef char *caddr_t;

# include <windows.h>
# include <winsock2.h>
# include <ws2tcpip.h>
# include <sys/timeb.h>
# include <iphlpapi.h>

# define EWOULDBLOCK WSAEWOULDBLOCK
# define EINPROGRESS WSAEINPROGRESS
# define ENOTCONN WSAENOTCONN
# define EHOSTUNREACH WSAEHOSTUNREACH
# define ENETUNREACH WSAENETUNREACH
# define ECONNREFUSED WSAECONNREFUSED
#else
# define ioctlsocket ioctl
# define closesocket(s) close(s)
# define O_BINARY 0
#endif

#include <sys/types.h>
#ifdef HAVE_SYS_BITYPES_H
# include <sys/bitypes.h>
#endif

#include <sys/time.h>

#ifdef NEED_TYPEDEFS
typedef char int8_t;
typedef unsigned char u_int8_t;

# if SIZEOF_SHORT == 2
    typedef short int16_t;
    typedef unsigned short u_int16_t;
# else
#  if SIZEOF_INT == 2
    typedef int int16_t;
    typedef unsigned int u_int16_t;
#  else
    #error Cannot find a type with sizeof() == 2
#  endif
# endif

# if SIZEOF_SHORT == 4
   typedef short int32_t;
   typedef unsigned short u_int32_t;
# else
#  if SIZEOF_INT == 4
    typedef int int32_t;
    typedef unsigned int u_int32_t;
#  else
    #error Cannot find a type with sizeof() == 4
#  endif
# endif
#endif /* NEED_TYPEDEFS */

#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif

#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif

#include <stdio.h>
#include <errno.h>

#ifndef HAVE_MEMMOVE
#define memmove(x, y, z) bcopy(y, x, z)
#endif

#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif

#ifdef HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif

#ifndef _WIN32
#include <sys/uio.h>
#endif

#ifndef _WIN32
#include <netinet/in.h>
#include <arpa/inet.h>
#endif

#ifdef GETTIMEOFDAY_ONE_ARG
#define gettimeofday(x, y) gettimeofday(x)
#endif

/* Systems lacking strdup() definition in <string.h>. */
#if defined(ultrix)
char *strdup(const char *);
#endif

/* Systems lacking malloc() definition in <stdlib.h>. */
#if defined(ultrix) || defined(hcx)
void *malloc(size_t arg);
void free(void *ptr);
#endif

#ifndef HAVE_INET_ATON
int inet_aton(const char *cp, struct in_addr *ia);
#endif

#include <fcntl.h>
#ifndef NO_UNIX_SOCKETS
#include <sys/un.h>
#endif
#include <signal.h>
#ifdef HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
#ifndef _WIN32
#include <sys/socket.h>
#endif

#if defined(HAVE_SYS_IOCTL_H)
# include <sys/ioctl.h>
#endif

#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif

#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif

#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif

#ifdef USE_PPP
#include <ppp/slirppp.h>
#endif

#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

#include <sys/stat.h>

/* Avoid conflicting with the libc insque() and remque(), which
   have different prototypes. */
#define insque slirp_insque
#define remque slirp_remque

#ifdef HAVE_SYS_STROPTS_H
#include <sys/stropts.h>
#endif

#include "debug.h"

#include "sys-queue.h"

#include "libslirp.h"
#include "ip.h"
#include "tcp.h"
#include "tcp_timer.h"
#include "tcp_var.h"
#include "tcpip.h"
#include "udp.h"
#include "mbuf.h"
#include "sbuf.h"
#include "socket.h"
#include "if.h"
#include "main.h"
#include "misc.h"
#ifdef USE_PPP
#include "ppp/pppd.h"
#include "ppp/ppp.h"
#endif

#include "bootp.h"
#include "tftp.h"

struct Slirp {
    TAILQ_ENTRY(Slirp) entry;

    /* virtual network configuration */
    struct in_addr vnetwork_addr;
    struct in_addr vnetwork_mask;
    struct in_addr vhost_addr;
    struct in_addr vdhcp_startaddr;
    struct in_addr vnameserver_addr;

    /* ARP cache for the guest IP addresses (XXX: allow many entries) */
    uint8_t client_ethaddr[6];

    struct in_addr client_ipaddr;
    char client_hostname[33];

    int restricted;
    struct timeval tt;
    struct ex_list *exec_list;

    /* mbuf states */
    struct mbuf m_freelist, m_usedlist;
    int mbuf_alloced;

    /* if states */
    int if_queued;          /* number of packets queued so far */
    struct mbuf if_fastq;   /* fast queue (for interactive data) */
    struct mbuf if_batchq;  /* queue for non-interactive data */
    struct mbuf *next_m;    /* pointer to next mbuf to output */

    /* ip states */
    struct ipq ipq;         /* ip reass. queue */
    u_int16_t ip_id;        /* ip packet ctr, for ids */

    /* bootp/dhcp states */
    BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
    char *bootp_filename;

    /* tcp states */
    struct socket tcb;
    struct socket *tcp_last_so;
    tcp_seq tcp_iss;        /* tcp initial send seq # */
    u_int32_t tcp_now;      /* for RFC 1323 timestamps */

    /* udp states */
    struct socket udb;
    struct socket *udp_last_so;

    /* tftp states */
    char *tftp_prefix;
    struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];

    void *opaque;
};

extern Slirp *slirp_instance;

#ifndef NULL
#define NULL (void *)0
#endif

#ifndef FULL_BOLT
void if_start(Slirp *);
#else
void if_start(struct ttys *);
#endif

#ifdef BAD_SPRINTF
# define vsprintf vsprintf_len
# define sprintf sprintf_len
 extern int vsprintf_len(char *, const char *, va_list);
 extern int sprintf_len(char *, const char *, ...);
#endif

#ifdef DECLARE_SPRINTF
# ifndef BAD_SPRINTF
 extern int vsprintf(char *, const char *, va_list);
# endif
 extern int vfprintf(FILE *, const char *, va_list);
#endif

#ifndef HAVE_STRERROR
 extern char *strerror(int error);
#endif

#ifndef HAVE_INDEX
 char *index(const char *, int);
#endif

#ifndef HAVE_GETHOSTID
 long gethostid(void);
#endif

void lprint(const char *, ...);

#ifndef _WIN32
#include <netdb.h>
#endif

#define DEFAULT_BAUD 115200

#define SO_OPTIONS DO_KEEPALIVE
#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)

/* cksum.c */
int cksum(struct mbuf *m, int len);

/* if.c */
void if_init(Slirp *);
void if_output(struct socket *, struct mbuf *);

/* ip_input.c */
void ip_init(Slirp *);
void ip_input(struct mbuf *);
void ip_slowtimo(Slirp *);
void ip_stripoptions(register struct mbuf *, struct mbuf *);

/* ip_output.c */
int ip_output(struct socket *, struct mbuf *);

/* tcp_input.c */
void tcp_input(register struct mbuf *, int, struct socket *);
int tcp_mss(register struct tcpcb *, u_int);

/* tcp_output.c */
int tcp_output(register struct tcpcb *);
void tcp_setpersist(register struct tcpcb *);

/* tcp_subr.c */
void tcp_init(Slirp *);
void tcp_template(struct tcpcb *);
void tcp_respond(struct tcpcb *, register struct tcpiphdr *, register struct mbuf *, tcp_seq, tcp_seq, int);
struct tcpcb * tcp_newtcpcb(struct socket *);
struct tcpcb * tcp_close(register struct tcpcb *);
void tcp_sockclosed(struct tcpcb *);
int tcp_fconnect(struct socket *);
void tcp_connect(struct socket *);
int tcp_attach(struct socket *);
u_int8_t tcp_tos(struct socket *);
int tcp_emu(struct socket *, struct mbuf *);
int tcp_ctl(struct socket *);
struct tcpcb *tcp_drop(struct tcpcb *tp, int err);

#ifdef USE_PPP
#define MIN_MRU MINMRU
#define MAX_MRU MAXMRU
#else
#define MIN_MRU 128
#define MAX_MRU 16384
#endif

#ifndef _WIN32
#define min(x,y) ((x) < (y) ? (x) : (y))
#define max(x,y) ((x) > (y) ? (x) : (y))
#endif

#ifdef _WIN32
#undef errno
#define errno (WSAGetLastError())
#endif

#endif