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