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/* SPDX-License-Identifier: BSD-3-Clause */
#ifndef SLIRP_H
#define SLIRP_H
#ifdef _WIN32
/* as defined in sdkddkver.h */
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0600 /* Vista */
#endif
/* reduces the number of implicitly included headers */
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
# include <winsock2.h>
# include <windows.h>
# include <ws2tcpip.h>
# include <sys/timeb.h>
# include <iphlpapi.h>
#else
# if !defined(__HAIKU__)
# define O_BINARY 0
# endif
#endif
#ifndef _WIN32
#include <sys/uio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#endif
#ifdef __APPLE__
# include <sys/filio.h>
#endif
/* Avoid conflicting with the libc insque() and remque(), which
have different prototypes. */
#define insque slirp_insque
#define remque slirp_remque
#define quehead slirp_quehead
#include "debug.h"
#include "util.h"
#include "qtailq.h"
#include "libslirp.h"
#include "ip.h"
#include "ip6.h"
#include "tcp.h"
#include "tcp_timer.h"
#include "tcp_var.h"
#include "tcpip.h"
#include "udp.h"
#include "ip_icmp.h"
#include "ip6_icmp.h"
#include "mbuf.h"
#include "sbuf.h"
#include "socket.h"
#include "if.h"
#include "main.h"
#include "misc.h"
#include "bootp.h"
#include "tftp.h"
#define ARPOP_REQUEST 1 /* ARP request */
#define ARPOP_REPLY 2 /* ARP reply */
struct ethhdr {
unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
unsigned char h_source[ETH_ALEN]; /* source ether addr */
unsigned short h_proto; /* packet type ID field */
};
struct slirp_arphdr {
unsigned short ar_hrd; /* format of hardware address */
unsigned short ar_pro; /* format of protocol address */
unsigned char ar_hln; /* length of hardware address */
unsigned char ar_pln; /* length of protocol address */
unsigned short ar_op; /* ARP opcode (command) */
/*
* Ethernet looks like this : This bit is variable sized however...
*/
unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
uint32_t ar_sip; /* sender IP address */
unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
uint32_t ar_tip; /* target IP address */
} SLIRP_PACKED;
#define ARP_TABLE_SIZE 16
typedef struct ArpTable {
struct slirp_arphdr table[ARP_TABLE_SIZE];
int next_victim;
} ArpTable;
void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
uint8_t out_ethaddr[ETH_ALEN]);
struct ndpentry {
unsigned char eth_addr[ETH_ALEN]; /* sender hardware address */
struct in6_addr ip_addr; /* sender IP address */
};
#define NDP_TABLE_SIZE 16
typedef struct NdpTable {
struct ndpentry table[NDP_TABLE_SIZE];
int next_victim;
} NdpTable;
void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
uint8_t ethaddr[ETH_ALEN]);
bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
uint8_t out_ethaddr[ETH_ALEN]);
struct Slirp {
QTAILQ_ENTRY(Slirp) entry;
unsigned time_fasttimo;
unsigned last_slowtimo;
bool do_slowtimo;
bool in_enabled, in6_enabled;
/* virtual network configuration */
struct in_addr vnetwork_addr;
struct in_addr vnetwork_mask;
struct in_addr vhost_addr;
struct in6_addr vprefix_addr6;
uint8_t vprefix_len;
struct in6_addr vhost_addr6;
struct in_addr vdhcp_startaddr;
struct in_addr vnameserver_addr;
struct in6_addr vnameserver_addr6;
struct in_addr client_ipaddr;
char client_hostname[33];
int restricted;
struct gfwd_list *guestfwd_list;
/* mbuf states */
struct quehead m_freelist;
struct quehead m_usedlist;
int mbuf_alloced;
/* if states */
struct quehead if_fastq; /* fast queue (for interactive data) */
struct quehead if_batchq; /* queue for non-interactive data */
bool if_start_busy; /* avoid if_start recursion */
/* ip states */
struct ipq ipq; /* ip reass. queue */
uint16_t ip_id; /* ip packet ctr, for ids */
/* bootp/dhcp states */
BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
char *bootp_filename;
size_t vdnssearch_len;
uint8_t *vdnssearch;
char *vdomainname;
/* tcp states */
struct socket tcb;
struct socket *tcp_last_so;
tcp_seq tcp_iss; /* tcp initial send seq # */
uint32_t tcp_now; /* for RFC 1323 timestamps */
/* udp states */
struct socket udb;
struct socket *udp_last_so;
/* icmp states */
struct socket icmp;
struct socket *icmp_last_so;
/* tftp states */
char *tftp_prefix;
struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
char *tftp_server_name;
ArpTable arp_table;
NdpTable ndp_table;
GRand *grand;
void *ra_timer;
const SlirpCb *cb;
void *opaque;
};
void if_start(Slirp *);
int get_dns_addr(struct in_addr *pdns_addr);
int get_dns6_addr(struct in6_addr *pdns6_addr, uint32_t *scope_id);
/* ncsi.c */
void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
#ifndef _WIN32
#include <netdb.h>
#endif
extern bool slirp_do_keepalive;
#define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
/* dnssearch.c */
int translate_dnssearch(Slirp *s, const char ** names);
/* cksum.c */
int cksum(struct mbuf *m, int len);
int ip6_cksum(struct mbuf *m);
/* if.c */
void if_init(Slirp *);
void if_output(struct socket *, struct mbuf *);
/* ip_input.c */
void ip_init(Slirp *);
void ip_cleanup(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 *);
/* ip6_input.c */
void ip6_init(Slirp *);
void ip6_cleanup(Slirp *);
void ip6_input(struct mbuf *);
/* ip6_output */
int ip6_output(struct socket *, struct mbuf *, int fast);
/* tcp_input.c */
void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
int tcp_mss(register struct tcpcb *, unsigned);
/* tcp_output.c */
int tcp_output(register struct tcpcb *);
void tcp_setpersist(register struct tcpcb *);
/* tcp_subr.c */
void tcp_init(Slirp *);
void tcp_cleanup(Slirp *);
void tcp_template(struct tcpcb *);
void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
struct tcpcb * tcp_newtcpcb(struct socket *);
struct tcpcb * tcp_close(register struct tcpcb *);
void tcp_sockclosed(struct tcpcb *);
int tcp_fconnect(struct socket *, unsigned short af);
void tcp_connect(struct socket *);
int tcp_attach(struct socket *);
uint8_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);
struct socket *
slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port);
void slirp_send_packet_all(Slirp *slirp, const void *buf, size_t len);
#endif
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