slirp/slirp.h

   1 #ifndef __COMMON_H__
   2 #define __COMMON_H__
   3
   4 #include "config-host.h"
   5 #include "slirp_config.h"
   6
   7 #ifdef _WIN32
   8 # include <inttypes.h>
   9
  10 typedef char *caddr_t;
  11
  12 # include <windows.h>
  13 # include <winsock2.h>
  14 # include <ws2tcpip.h>
  15 # include <sys/timeb.h>
  16 # include <iphlpapi.h>
  17
  18 #else
  19 # define ioctlsocket ioctl
  20 # define closesocket(s) close(s)
  21 # if !defined(__HAIKU__)
  22 #  define O_BINARY 0
  23 # endif
  24 #endif
  25
  26 #include <sys/types.h>
  27 #ifdef HAVE_SYS_BITYPES_H
  28 # include <sys/bitypes.h>
  29 #endif
  30
  31 #include <sys/time.h>
  32
  33 #ifdef HAVE_UNISTD_H
  34 # include <unistd.h>
  35 #endif
  36
  37 #ifdef HAVE_STDLIB_H
  38 # include <stdlib.h>
  39 #endif
  40
  41 #include <stdio.h>
  42 #include <errno.h>
  43
  44 #ifndef HAVE_MEMMOVE
  45 #define memmove(x, y, z) bcopy(y, x, z)
  46 #endif
  47
  48 #if TIME_WITH_SYS_TIME
  49 # include <sys/time.h>
  50 # include <time.h>
  51 #else
  52 # ifdef HAVE_SYS_TIME_H
  53 #  include <sys/time.h>
  54 # else
  55 #  include <time.h>
  56 # endif
  57 #endif
  58
  59 #ifdef HAVE_STRING_H
  60 # include <string.h>
  61 #else
  62 # include <strings.h>
  63 #endif
  64
  65 #ifndef _WIN32
  66 #include <sys/uio.h>
  67 #endif
  68
  69 #ifndef _WIN32
  70 #include <netinet/in.h>
  71 #include <arpa/inet.h>
  72 #endif
  73
  74 /* Systems lacking strdup() definition in <string.h>. */
  75 #if defined(ultrix)
  76 char *strdup(const char *);
  77 #endif
  78
  79 /* Systems lacking malloc() definition in <stdlib.h>. */
  80 #if defined(ultrix) || defined(hcx)
  81 void *malloc(size_t arg);
  82 void free(void *ptr);
  83 #endif
  84
  85 #include <fcntl.h>
  86 #ifndef NO_UNIX_SOCKETS
  87 #include <sys/un.h>
  88 #endif
  89 #include <signal.h>
  90 #ifdef HAVE_SYS_SIGNAL_H
  91 # include <sys/signal.h>
  92 #endif
  93 #ifndef _WIN32
  94 #include <sys/socket.h>
  95 #endif
  96
  97 #if defined(HAVE_SYS_IOCTL_H)
  98 # include <sys/ioctl.h>
  99 #endif
 100
 101 #ifdef HAVE_SYS_SELECT_H
 102 # include <sys/select.h>
 103 #endif
 104
 105 #ifdef HAVE_SYS_WAIT_H
 106 # include <sys/wait.h>
 107 #endif
 108
 109 #ifdef HAVE_SYS_FILIO_H
 110 # include <sys/filio.h>
 111 #endif
 112
 113 #ifdef USE_PPP
 114 #include <ppp/slirppp.h>
 115 #endif
 116
 117 #ifdef __STDC__
 118 #include <stdarg.h>
 119 #else
 120 #include <varargs.h>
 121 #endif
 122
 123 #include <sys/stat.h>
 124
 125 /* Avoid conflicting with the libc insque() and remque(), which
 126    have different prototypes. */
 127 #define insque slirp_insque
 128 #define remque slirp_remque
 129
 130 #ifdef HAVE_SYS_STROPTS_H
 131 #include <sys/stropts.h>
 132 #endif
 133
 134 #include "debug.h"
 135
 136 #include "qemu/queue.h"
 137 #include "qemu/sockets.h"
 138
 139 #include "libslirp.h"
 140 #include "ip.h"
 141 #include "tcp.h"
 142 #include "tcp_timer.h"
 143 #include "tcp_var.h"
 144 #include "tcpip.h"
 145 #include "udp.h"
 146 #include "ip_icmp.h"
 147 #include "mbuf.h"
 148 #include "sbuf.h"
 149 #include "socket.h"
 150 #include "if.h"
 151 #include "main.h"
 152 #include "misc.h"
 153 #ifdef USE_PPP
 154 #include "ppp/pppd.h"
 155 #include "ppp/ppp.h"
 156 #endif
 157
 158 #include "bootp.h"
 159 #include "tftp.h"
 160
 161 #define ETH_ALEN 6
 162 #define ETH_HLEN 14
 163
 164 #define ETH_P_IP  0x0800        /* Internet Protocol packet  */
 165 #define ETH_P_ARP 0x0806        /* Address Resolution packet */
 166
 167 #define ARPOP_REQUEST 1         /* ARP request */
 168 #define ARPOP_REPLY   2         /* ARP reply   */
 169
 170 struct ethhdr {
 171     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 172     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 173     unsigned short h_proto;            /* packet type ID field */
 174 };
 175
 176 struct arphdr {
 177     unsigned short ar_hrd;      /* format of hardware address */
 178     unsigned short ar_pro;      /* format of protocol address */
 179     unsigned char  ar_hln;      /* length of hardware address */
 180     unsigned char  ar_pln;      /* length of protocol address */
 181     unsigned short ar_op;       /* ARP opcode (command)       */
 182
 183     /*
 184      *  Ethernet looks like this : This bit is variable sized however...
 185      */
 186     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 187     uint32_t      ar_sip;           /* sender IP address       */
 188     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 189     uint32_t      ar_tip;           /* target IP address       */
 190 } QEMU_PACKED;
 191
 192 #define ARP_TABLE_SIZE 16
 193
 194 typedef struct ArpTable {
 195     struct arphdr table[ARP_TABLE_SIZE];
 196     int next_victim;
 197 } ArpTable;
 198
 199 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 200
 201 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 202                       uint8_t out_ethaddr[ETH_ALEN]);
 203
 204 struct Slirp {
 205     QTAILQ_ENTRY(Slirp) entry;
 206
 207     /* virtual network configuration */
 208     struct in_addr vnetwork_addr;
 209     struct in_addr vnetwork_mask;
 210     struct in_addr vhost_addr;
 211     struct in_addr vdhcp_startaddr;
 212     struct in_addr vnameserver_addr;
 213
 214     struct in_addr client_ipaddr;
 215     char client_hostname[33];
 216
 217     int restricted;
 218     struct ex_list *exec_list;
 219
 220     /* mbuf states */
 221     struct mbuf m_freelist, m_usedlist;
 222     int mbuf_alloced;
 223
 224     /* if states */
 225     struct mbuf if_fastq;   /* fast queue (for interactive data) */
 226     struct mbuf if_batchq;  /* queue for non-interactive data */
 227     struct mbuf *next_m;    /* pointer to next mbuf to output */
 228     bool if_start_busy;     /* avoid if_start recursion */
 229
 230     /* ip states */
 231     struct ipq ipq;         /* ip reass. queue */
 232     uint16_t ip_id;         /* ip packet ctr, for ids */
 233
 234     /* bootp/dhcp states */
 235     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 236     char *bootp_filename;
 237     size_t vdnssearch_len;
 238     uint8_t *vdnssearch;
 239
 240     /* tcp states */
 241     struct socket tcb;
 242     struct socket *tcp_last_so;
 243     tcp_seq tcp_iss;        /* tcp initial send seq # */
 244     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 245
 246     /* udp states */
 247     struct socket udb;
 248     struct socket *udp_last_so;
 249
 250     /* icmp states */
 251     struct socket icmp;
 252     struct socket *icmp_last_so;
 253
 254     /* tftp states */
 255     char *tftp_prefix;
 256     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 257
 258     ArpTable arp_table;
 259
 260     void *opaque;
 261 };
 262
 263 extern Slirp *slirp_instance;
 264
 265 #ifndef NULL
 266 #define NULL (void *)0
 267 #endif
 268
 269 #ifndef FULL_BOLT
 270 void if_start(Slirp *);
 271 #else
 272 void if_start(struct ttys *);
 273 #endif
 274
 275 #ifndef HAVE_STRERROR
 276  char *strerror(int error);
 277 #endif
 278
 279 #ifndef HAVE_INDEX
 280  char *index(const char *, int);
 281 #endif
 282
 283 #ifndef HAVE_GETHOSTID
 284  long gethostid(void);
 285 #endif
 286
 287 void lprint(const char *, ...) GCC_FMT_ATTR(1, 2);
 288
 289 #ifndef _WIN32
 290 #include <netdb.h>
 291 #endif
 292
 293 #define DEFAULT_BAUD 115200
 294
 295 #define SO_OPTIONS DO_KEEPALIVE
 296 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 297
 298 /* dnssearch.c */
 299 int translate_dnssearch(Slirp *s, const char ** names);
 300
 301 /* cksum.c */
 302 int cksum(struct mbuf *m, int len);
 303
 304 /* if.c */
 305 void if_init(Slirp *);
 306 void if_output(struct socket *, struct mbuf *);
 307
 308 /* ip_input.c */
 309 void ip_init(Slirp *);
 310 void ip_cleanup(Slirp *);
 311 void ip_input(struct mbuf *);
 312 void ip_slowtimo(Slirp *);
 313 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 314
 315 /* ip_output.c */
 316 int ip_output(struct socket *, struct mbuf *);
 317
 318 /* tcp_input.c */
 319 void tcp_input(register struct mbuf *, int, struct socket *);
 320 int tcp_mss(register struct tcpcb *, u_int);
 321
 322 /* tcp_output.c */
 323 int tcp_output(register struct tcpcb *);
 324 void tcp_setpersist(register struct tcpcb *);
 325
 326 /* tcp_subr.c */
 327 void tcp_init(Slirp *);
 328 void tcp_cleanup(Slirp *);
 329 void tcp_template(struct tcpcb *);
 330 void tcp_respond(struct tcpcb *, register struct tcpiphdr *, register struct mbuf *, tcp_seq, tcp_seq, int);
 331 struct tcpcb * tcp_newtcpcb(struct socket *);
 332 struct tcpcb * tcp_close(register struct tcpcb *);
 333 void tcp_sockclosed(struct tcpcb *);
 334 int tcp_fconnect(struct socket *);
 335 void tcp_connect(struct socket *);
 336 int tcp_attach(struct socket *);
 337 uint8_t tcp_tos(struct socket *);
 338 int tcp_emu(struct socket *, struct mbuf *);
 339 int tcp_ctl(struct socket *);
 340 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 341
 342 #ifdef USE_PPP
 343 #define MIN_MRU MINMRU
 344 #define MAX_MRU MAXMRU
 345 #else
 346 #define MIN_MRU 128
 347 #define MAX_MRU 16384
 348 #endif
 349
 350 #ifndef _WIN32
 351 #define min(x,y) ((x) < (y) ? (x) : (y))
 352 #define max(x,y) ((x) > (y) ? (x) : (y))
 353 #endif
 354
 355 #ifdef _WIN32
 356 #undef errno
 357 #define errno (WSAGetLastError())
 358 #endif
 359
 360 #endif