slirp/slirp.h

   1 #ifndef SLIRP_H
   2 #define SLIRP_H
   3
   4 #ifdef _WIN32
   5
   6 /* as defined in sdkddkver.h */
   7 #ifndef _WIN32_WINNT
   8 #define _WIN32_WINNT 0x0600 /* Vista */
   9 #endif
  10 /* reduces the number of implicitly included headers */
  11 #ifndef WIN32_LEAN_AND_MEAN
  12 #define WIN32_LEAN_AND_MEAN
  13 #endif
  14
  15 typedef char *caddr_t;
  16
  17 # include <winsock2.h>
  18 # include <windows.h>
  19 # include <ws2tcpip.h>
  20 # include <sys/timeb.h>
  21 # include <iphlpapi.h>
  22
  23 #else
  24 # if !defined(__HAIKU__)
  25 #  define O_BINARY 0
  26 # endif
  27 #endif
  28
  29 #ifndef _WIN32
  30 #include <sys/uio.h>
  31 #include <netinet/in.h>
  32 #include <arpa/inet.h>
  33 #include <sys/socket.h>
  34 #include <sys/ioctl.h>
  35 #endif
  36
  37 #ifdef __APPLE__
  38 # include <sys/filio.h>
  39 #endif
  40
  41 /* Avoid conflicting with the libc insque() and remque(), which
  42    have different prototypes. */
  43 #define insque slirp_insque
  44 #define remque slirp_remque
  45 #define quehead slirp_quehead
  46
  47 #include "debug.h"
  48 #include "util.h"
  49 #include "qtailq.h"
  50
  51 #include "libslirp.h"
  52 #include "ip.h"
  53 #include "ip6.h"
  54 #include "tcp.h"
  55 #include "tcp_timer.h"
  56 #include "tcp_var.h"
  57 #include "tcpip.h"
  58 #include "udp.h"
  59 #include "ip_icmp.h"
  60 #include "ip6_icmp.h"
  61 #include "mbuf.h"
  62 #include "sbuf.h"
  63 #include "socket.h"
  64 #include "if.h"
  65 #include "main.h"
  66 #include "misc.h"
  67
  68 #include "bootp.h"
  69 #include "tftp.h"
  70
  71 #define ARPOP_REQUEST 1         /* ARP request */
  72 #define ARPOP_REPLY   2         /* ARP reply   */
  73
  74 struct ethhdr {
  75     unsigned char  h_dest[ETH_ALEN];   /* destination eth addr */
  76     unsigned char  h_source[ETH_ALEN]; /* source ether addr    */
  77     unsigned short h_proto;            /* packet type ID field */
  78 };
  79
  80 struct slirp_arphdr {
  81     unsigned short ar_hrd;      /* format of hardware address */
  82     unsigned short ar_pro;      /* format of protocol address */
  83     unsigned char  ar_hln;      /* length of hardware address */
  84     unsigned char  ar_pln;      /* length of protocol address */
  85     unsigned short ar_op;       /* ARP opcode (command)       */
  86
  87     /*
  88      *  Ethernet looks like this : This bit is variable sized however...
  89      */
  90     unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
  91     uint32_t      ar_sip;           /* sender IP address       */
  92     unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
  93     uint32_t      ar_tip;           /* target IP address       */
  94 } SLIRP_PACKED;
  95
  96 #define ARP_TABLE_SIZE 16
  97
  98 typedef struct ArpTable {
  99     struct slirp_arphdr table[ARP_TABLE_SIZE];
 100     int next_victim;
 101 } ArpTable;
 102
 103 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
 104
 105 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
 106                       uint8_t out_ethaddr[ETH_ALEN]);
 107
 108 struct ndpentry {
 109     unsigned char   eth_addr[ETH_ALEN];     /* sender hardware address */
 110     struct in6_addr ip_addr;                /* sender IP address       */
 111 } SLIRP_PACKED;
 112
 113 #define NDP_TABLE_SIZE 16
 114
 115 typedef struct NdpTable {
 116     struct ndpentry table[NDP_TABLE_SIZE];
 117     int next_victim;
 118 } NdpTable;
 119
 120 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
 121                    uint8_t ethaddr[ETH_ALEN]);
 122 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
 123                       uint8_t out_ethaddr[ETH_ALEN]);
 124
 125 struct Slirp {
 126     QTAILQ_ENTRY(Slirp) entry;
 127     u_int time_fasttimo;
 128     u_int last_slowtimo;
 129     bool do_slowtimo;
 130
 131     bool in_enabled, in6_enabled;
 132
 133     /* virtual network configuration */
 134     struct in_addr vnetwork_addr;
 135     struct in_addr vnetwork_mask;
 136     struct in_addr vhost_addr;
 137     struct in6_addr vprefix_addr6;
 138     uint8_t vprefix_len;
 139     struct in6_addr vhost_addr6;
 140     struct in_addr vdhcp_startaddr;
 141     struct in_addr vnameserver_addr;
 142     struct in6_addr vnameserver_addr6;
 143
 144     struct in_addr client_ipaddr;
 145     char client_hostname[33];
 146
 147     int restricted;
 148     struct gfwd_list *guestfwd_list;
 149
 150     /* mbuf states */
 151     struct quehead m_freelist;
 152     struct quehead m_usedlist;
 153     int mbuf_alloced;
 154
 155     /* if states */
 156     struct quehead if_fastq;   /* fast queue (for interactive data) */
 157     struct quehead if_batchq;  /* queue for non-interactive data */
 158     bool if_start_busy;     /* avoid if_start recursion */
 159
 160     /* ip states */
 161     struct ipq ipq;         /* ip reass. queue */
 162     uint16_t ip_id;         /* ip packet ctr, for ids */
 163
 164     /* bootp/dhcp states */
 165     BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
 166     char *bootp_filename;
 167     size_t vdnssearch_len;
 168     uint8_t *vdnssearch;
 169     char *vdomainname;
 170
 171     /* tcp states */
 172     struct socket tcb;
 173     struct socket *tcp_last_so;
 174     tcp_seq tcp_iss;        /* tcp initial send seq # */
 175     uint32_t tcp_now;       /* for RFC 1323 timestamps */
 176
 177     /* udp states */
 178     struct socket udb;
 179     struct socket *udp_last_so;
 180
 181     /* icmp states */
 182     struct socket icmp;
 183     struct socket *icmp_last_so;
 184
 185     /* tftp states */
 186     char *tftp_prefix;
 187     struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
 188     char *tftp_server_name;
 189
 190     ArpTable arp_table;
 191     NdpTable ndp_table;
 192
 193     GRand *grand;
 194     void *ra_timer;
 195
 196     const SlirpCb *cb;
 197     void *opaque;
 198 };
 199
 200 void if_start(Slirp *);
 201
 202 int get_dns_addr(struct in_addr *pdns_addr);
 203 int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id);
 204
 205 /* ncsi.c */
 206 void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
 207
 208 #ifndef _WIN32
 209 #include <netdb.h>
 210 #endif
 211
 212
 213 extern bool slirp_do_keepalive;
 214
 215 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
 216
 217 /* dnssearch.c */
 218 int translate_dnssearch(Slirp *s, const char ** names);
 219
 220 /* cksum.c */
 221 int cksum(struct mbuf *m, int len);
 222 int ip6_cksum(struct mbuf *m);
 223
 224 /* if.c */
 225 void if_init(Slirp *);
 226 void if_output(struct socket *, struct mbuf *);
 227
 228 /* ip_input.c */
 229 void ip_init(Slirp *);
 230 void ip_cleanup(Slirp *);
 231 void ip_input(struct mbuf *);
 232 void ip_slowtimo(Slirp *);
 233 void ip_stripoptions(register struct mbuf *, struct mbuf *);
 234
 235 /* ip_output.c */
 236 int ip_output(struct socket *, struct mbuf *);
 237
 238 /* ip6_input.c */
 239 void ip6_init(Slirp *);
 240 void ip6_cleanup(Slirp *);
 241 void ip6_input(struct mbuf *);
 242
 243 /* ip6_output */
 244 int ip6_output(struct socket *, struct mbuf *, int fast);
 245
 246 /* tcp_input.c */
 247 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
 248 int tcp_mss(register struct tcpcb *, u_int);
 249
 250 /* tcp_output.c */
 251 int tcp_output(register struct tcpcb *);
 252 void tcp_setpersist(register struct tcpcb *);
 253
 254 /* tcp_subr.c */
 255 void tcp_init(Slirp *);
 256 void tcp_cleanup(Slirp *);
 257 void tcp_template(struct tcpcb *);
 258 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
 259         register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
 260 struct tcpcb * tcp_newtcpcb(struct socket *);
 261 struct tcpcb * tcp_close(register struct tcpcb *);
 262 void tcp_sockclosed(struct tcpcb *);
 263 int tcp_fconnect(struct socket *, unsigned short af);
 264 void tcp_connect(struct socket *);
 265 int tcp_attach(struct socket *);
 266 uint8_t tcp_tos(struct socket *);
 267 int tcp_emu(struct socket *, struct mbuf *);
 268 int tcp_ctl(struct socket *);
 269 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
 270
 271 struct socket *
 272 slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port);
 273
 274 #endif