/* 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 #include #include #include #include #else #if !defined(__HAIKU__) #define O_BINARY 0 #endif #endif #ifndef _WIN32 #include #include #include #include #include #endif #ifdef __APPLE__ #include #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 "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 { 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; int if_mtu; int if_mru; bool disable_host_loopback; /* 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; bool enable_emu; const SlirpCb *cb; void *opaque; struct sockaddr_in *outbound_addr; struct sockaddr_in6 *outbound_addr6; }; 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 #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 *); void 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