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 # define EWOULDBLOCK WSAEWOULDBLOCK
  19 # define EINPROGRESS WSAEINPROGRESS
  20 # define ENOTCONN WSAENOTCONN
  21 # define EHOSTUNREACH WSAEHOSTUNREACH
  22 # define ENETUNREACH WSAENETUNREACH
  23 # define ECONNREFUSED WSAECONNREFUSED
  24 #else
  25 # define ioctlsocket ioctl
  26 # define closesocket(s) close(s)
  27 # if !defined(__HAIKU__)
  28 #  define O_BINARY 0
  29 # endif
  30 #endif
  31
  32 #include <sys/types.h>
  33 #ifdef HAVE_SYS_BITYPES_H
  34 # include <sys/bitypes.h>
  35 #endif
  36
  37 #include <sys/time.h>
  38
  39 #ifdef HAVE_UNISTD_H
  40 # include <unistd.h>
  41 #endif
  42
  43 #ifdef HAVE_STDLIB_H
  44 # include <stdlib.h>
  45 #endif
  46
  47 #include <stdio.h>
  48 #include <errno.h>
  49
  50 #ifndef HAVE_MEMMOVE
  51 #define memmove(x, y, z) bcopy(y, x, z)
  52 #endif
  53
  54 #if TIME_WITH_SYS_TIME
  55 # include <sys/time.h>
  56 # include <time.h>
  57 #else
  58 # ifdef HAVE_SYS_TIME_H
  59 #  include <sys/time.h>
  60 # else
  61 #  include <time.h>
  62 # endif
  63 #endif
  64
  65 #ifdef HAVE_STRING_H
  66 # include <string.h>
  67 #else
  68 # include <strings.h>
  69 #endif
  70
  71 #ifndef _WIN32
  72 #include <sys/uio.h>
  73 #endif
  74
  75 #ifndef _WIN32
  76 #include <netinet/in.h>
  77 #include <arpa/inet.h>
  78 #endif
  79
  80 /* Systems lacking strdup() definition in <string.h>. */
  81 #if defined(ultrix)
  82 char *strdup(const char *);
  83 #endif
  84
  85 /* Systems lacking malloc() definition in <stdlib.h>. */
  86 #if defined(ultrix) || defined(hcx)
  87 void *malloc(size_t arg);
  88 void free(void *ptr);
  89 #endif
  90
  91 #ifndef HAVE_INET_ATON
  92 int inet_aton(const char *cp, struct in_addr *ia);
  93 #endif
  94
  95 #include <fcntl.h>
  96 #ifndef NO_UNIX_SOCKETS
  97 #include <sys/un.h>
  98 #endif
  99 #include <signal.h>
 100 #ifdef HAVE_SYS_SIGNAL_H
 101 # include <sys/signal.h>
 102 #endif
 103 #ifndef _WIN32
 104 #include <sys/socket.h>
 105 #endif
 106
 107 #if defined(HAVE_SYS_IOCTL_H)
 108 # include <sys/ioctl.h>
 109 #endif
 110
 111 #ifdef HAVE_SYS_SELECT_H
 112 # include <sys/select.h>
 113 #endif
 114
 115 #ifdef HAVE_SYS_WAIT_H
 116 # include <sys/wait.h>
 117 #endif
 118
 119 #ifdef HAVE_SYS_FILIO_H
 120 # include <sys/filio.h>
 121 #endif
 122
 123 #ifdef USE_PPP
 124 #include <ppp/slirppp.h>
 125 #endif
 126
 127 #ifdef __STDC__
 128 #include <stdarg.h>
 129 #else
 130 #include <varargs.h>
 131 #endif
 132
 133 #include <sys/stat.h>
 134
 135 /* Avoid conflicting with the libc insque() and remque(), which
 136    have different prototypes. */
 137 #define insque slirp_insque
 138 #define remque slirp_remque
 139
 140 #ifdef HAVE_SYS_STROPTS_H
 141 #include <sys/stropts.h>
 142 #endif
 143
 144 #include "debug.h"
 145
 146 #include "qemu-queue.h"
 147
 148 #include "libslirp.h"
 149 #include "ip.h"
 150 #include "tcp.h"
 151 #include "tcp_timer.h"
 152 #include "tcp_var.h"
 153 #include "tcpip.h"
 154 #include "udp.h"
 155 #include "ip_icmp.h"
 156 #include "mbuf.h"
 157 #include "sbuf.h"
 158 #include "socket.h"
 159 #include "if.h"
 160 #include "main.h"
 161 #include "misc.h"
 162 #ifdef USE_PPP
 163 #include "ppp/pppd.h"
 164 #include "ppp/ppp.h"
 165 #endif
 166
 167 #include "bootp.h"
 168 #include "tftp.h"
 169
 170 /* osdep.c */
 171 int qemu_socket(int domain, int type, int protocol);
 172
 173 #define ETH_ALEN 6
 174 #define ETH_HLEN 14
 175
 176 #define ETH_P_IP  0x0800        /* Internet Protocol packet  */
 177 #define ETH_P_ARP 0x0806        /* Address Resolution packet */
 178
 179 #define ARPOP_REQUEST 1         /* ARP request */
 180 #define ARPOP_REPLY   2         /* ARP reply   */
 181
 182 struct ethhdr {
 183     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
 184     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
 185     unsigned short h_proto;            /* packet type ID field */
 186 };
 187
 188 struct arphdr {
 189     unsigned short ar_hrd;      /* format of hardware address */
 190     unsigned short ar_pro;      /* format of protocol address */
 191     unsigned char  ar_hln;      /* length of hardware address */
 192     unsigned char  ar_pln;      /* length of protocol address */
 193     unsigned short ar_op;       /* ARP opcode (command)       */
 194
 195     /*
 196      *  Ethernet looks like this : This bit is variable sized however...
 197      */
 198     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
 199     uint32_t      ar_sip;           /* sender IP address       */
 200     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
 201     uint32_t      ar_tip;           /* target IP address       */
 202 } __attribute__((packed));
 203
 204 #define ARP_TABLE_SIZE 16
 205
 206 typedef struct ArpTable {
 207     struct arphdr table[ARP_TABLE_SIZE];
 208     int next_victim;
 209 } ArpTable;
 210
 211 void arp_table_add(Slirp *slirp, int ip_addr, uint8_t ethaddr[ETH_ALEN]);
 212
 213 bool arp_table_search(Slirp *slirp, int in_ip_addr,
 214                       uint8_t out_ethaddr[ETH_ALEN]);
 215
 216 struct Slirp {
 217     QTAILQ_ENTRY(Slirp) entry;
 218
 219     /* virtual network configuration */
 220     struct in_addr vnetwork_addr;
 221     struct in_addr vnetwork_mask;
 222     struct in_addr vhost_addr;
 223     struct in_addr vdhcp_startaddr;
 224     struct in_addr vnameserver_addr;
 225
 226     struct in_addr client_ipaddr;
 227     char client_hostname[33];
 228
 229     int restricted;
 230     struct timeval tt;
 231     struct ex_list *exec_list;
 232
 233     /* mbuf states */
 234     struct mbuf m_freelist, m_usedlist;
 235     int mbuf_alloced;
 236
 237     /* if states */
 238     int if_queued;          /* number of packets queued so far */
 239     struct mbuf if_fastq;   /* fast queue (for interactive data) */
 240     struct mbuf if_batchq;  /* queue for non-interactive data */
 241     struct mbuf *next_m;    /* pointer to next mbuf to output */
 242
 243     /* ip states */
 244     struct ipq ipq;         /* ip reass. queue */
 245     uint16_t ip_id;         /* ip packet ctr, for ids */
 246
 247     /* bootp/dhcp states */
 248     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 249     char *bootp_filename;
 250
 251     /* tcp states */
 252     struct socket tcb;
 253     struct socket *tcp_last_so;
 254     tcp_seq tcp_iss;        /* tcp initial send seq # */
 255     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 256
 257     /* udp states */
 258     struct socket udb;
 259     struct socket *udp_last_so;
 260
 261     /* icmp states */
 262     struct socket icmp;
 263     struct socket *icmp_last_so;
 264
 265     /* tftp states */
 266     char *tftp_prefix;
 267     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 268
 269     ArpTable arp_table;
 270
 271     void *opaque;
 272 };
 273
 274 extern Slirp *slirp_instance;
 275
 276 #ifndef NULL
 277 #define NULL (void *)0
 278 #endif
 279
 280 #ifndef FULL_BOLT
 281 void if_start(Slirp *);
 282 #else
 283 void if_start(struct ttys *);
 284 #endif
 285
 286 #ifndef HAVE_STRERROR
 287  char *strerror(int error);
 288 #endif
 289
 290 #ifndef HAVE_INDEX
 291  char *index(const char *, int);
 292 #endif
 293
 294 #ifndef HAVE_GETHOSTID
 295  long gethostid(void);
 296 #endif
 297
 298 void lprint(const char *, ...) GCC_FMT_ATTR(1, 2);
 299
 300 #ifndef _WIN32
 301 #include <netdb.h>
 302 #endif
 303
 304 #define DEFAULT_BAUD 115200
 305
 306 #define SO_OPTIONS DO_KEEPALIVE
 307 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 308
 309 /* cksum.c */
 310 int cksum(struct mbuf *m, int len);
 311
 312 /* if.c */
 313 void if_init(Slirp *);
 314 void if_output(struct socket *, struct mbuf *);
 315
 316 /* ip_input.c */
 317 void ip_init(Slirp *);
 318 void ip_input(struct mbuf *);
 319 void ip_slowtimo(Slirp *);
 320 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 321
 322 /* ip_output.c */
 323 int ip_output(struct socket *, struct mbuf *);
 324
 325 /* tcp_input.c */
 326 void tcp_input(register struct mbuf *, int, struct socket *);
 327 int tcp_mss(register struct tcpcb *, u_int);
 328
 329 /* tcp_output.c */
 330 int tcp_output(register struct tcpcb *);
 331 void tcp_setpersist(register struct tcpcb *);
 332
 333 /* tcp_subr.c */
 334 void tcp_init(Slirp *);
 335 void tcp_template(struct tcpcb *);
 336 void tcp_respond(struct tcpcb *, register struct tcpiphdr *, register struct mbuf *, tcp_seq, tcp_seq, int);
 337 struct tcpcb * tcp_newtcpcb(struct socket *);
 338 struct tcpcb * tcp_close(register struct tcpcb *);
 339 void tcp_sockclosed(struct tcpcb *);
 340 int tcp_fconnect(struct socket *);
 341 void tcp_connect(struct socket *);
 342 int tcp_attach(struct socket *);
 343 uint8_t tcp_tos(struct socket *);
 344 int tcp_emu(struct socket *, struct mbuf *);
 345 int tcp_ctl(struct socket *);
 346 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 347
 348 #ifdef USE_PPP
 349 #define MIN_MRU MINMRU
 350 #define MAX_MRU MAXMRU
 351 #else
 352 #define MIN_MRU 128
 353 #define MAX_MRU 16384
 354 #endif
 355
 356 #ifndef _WIN32
 357 #define min(x,y) ((x) < (y) ? (x) : (y))
 358 #define max(x,y) ((x) > (y) ? (x) : (y))
 359 #endif
 360
 361 #ifdef _WIN32
 362 #undef errno
 363 #define errno (WSAGetLastError())
 364 #endif
 365
 366 #endif