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typedef struct Conf Conf;
typedef struct Ctl Ctl;
struct Conf
{
/* locally generated */
char *type;
char *dev;
char mpoint[32];
int cfd; /* ifc control channel */
int dfd; /* ifc data channel (for ppp) */
char *cputype;
uchar hwa[32]; /* hardware address */
int hwatype;
int hwalen;
uchar cid[32];
int cidlen;
char *baud;
/* learned info */
uchar gaddr[IPaddrlen];
uchar laddr[IPaddrlen];
uchar mask[IPaddrlen];
uchar raddr[IPaddrlen];
uchar dns[2*IPaddrlen];
uchar fs[2*IPaddrlen];
uchar auth[2*IPaddrlen];
uchar ntp[IPaddrlen];
int mtu;
/* dhcp specific */
int state;
int fd;
ulong xid;
ulong starttime;
char sname[64];
char hostname[32];
char domainname[64];
uchar server[IPaddrlen]; /* server IP address */
ulong offered; /* offered lease time */
ulong lease; /* lease time */
ulong resend; /* # of resends for current state */
ulong timeout; /* time to timeout - seconds */
/*
* IPv6
*/
/* solicitation specific - XXX add support for IPv6 leases */
// ulong solicit_retries;
/* router-advertisement related */
uchar sendra;
uchar recvra;
uchar mflag;
uchar oflag;
int maxraint; /* rfc2461, p.39: 4sec ≤ maxraint ≤ 1800sec, def 600 */
int minraint; /* 3sec ≤ minraint ≤ 0.75*maxraint */
int linkmtu;
int reachtime; /* 3,600,000 msec, default 0 */
int rxmitra; /* default 0 */
int ttl; /* default 0 (unspecified) */
/* default gateway params */
uchar v6gaddr[IPaddrlen];
int routerlt; /* router life time */
/* prefix related */
uchar v6pref[IPaddrlen];
int prefixlen;
uchar onlink; /* flag: address is `on-link' */
uchar autoflag; /* flag: autonomous */
ulong validlt; /* valid lifetime (seconds) */
ulong preflt; /* preferred lifetime (seconds) */
};
struct Ctl
{
Ctl *next;
char *ctl;
};
extern Ctl *firstctl, **ctll;
extern Conf conf;
extern int noconfig;
extern int ipv6auto;
extern int debug;
extern int dodhcp;
extern int dolog;
extern int nip;
extern int plan9;
extern int dupl_disc;
extern int myifc;
extern char *vs;
void adddefroute(char*, uchar*);
void binddevice(void);
void bootprequest(void);
void controldevice(void);
void dhcpquery(int, int);
void dhcprecv(void);
void dhcpsend(int);
int dhcptimer(void);
void dhcpwatch(int);
void doadd(int);
void doremove(void);
void dounbind(void);
int getndb(void);
int ipconfig4(void);
int ipconfig6(int);
long jitter(void);
void lookforip(char*);
void mkclientid(void);
int nipifcs(char*);
int openlisten(void);
uchar *optaddaddr(uchar*, int, uchar*);
uchar *optaddbyte(uchar*, int, int);
uchar *optaddstr(uchar*, int, char*);
uchar *optadd(uchar*, int, void*, int);
uchar *optaddulong(uchar*, int, ulong);
uchar *optaddvec(uchar*, int, uchar*, int);
int optgetaddrs(uchar*, int, uchar*, int);
int optgetaddr(uchar*, int, uchar*);
int optgetbyte(uchar*, int);
int optgetstr(uchar*, int, char*, int);
uchar *optget(uchar*, int, int*);
ulong optgetulong(uchar*, int);
int optgetvec(uchar*, int, uchar*, int);
int parseoptions(uchar *p, int n);
int parseverb(char*);
void procsetname(char *fmt, ...);
void putndb(void);
ulong randint(ulong low, ulong hi);
void tweakservers(void);
void usage(void);
int validip(uchar*);
void warning(char *fmt, ...);
void writendb(char*, int, int);
/*
* IPv6
*/
void doipv6(int);
int ipconfig6(int);
void recvra6(void);
void sendra6(void);
void v6paraminit(Conf *);
typedef struct Headers Headers;
typedef struct Ip4hdr Ip4hdr;
typedef struct Lladdropt Lladdropt;
typedef struct Mtuopt Mtuopt;
typedef struct Prefixopt Prefixopt;
typedef struct Routeradv Routeradv;
typedef struct Routersol Routersol;
enum {
IsRouter = 1,
IsHostRecv = 2,
IsHostNoRecv = 3,
MAClen = 6,
IPv4 = 4,
IPv6 = 6,
Defmtu = 1400,
IP_HOPBYHOP = 0,
ICMPv4 = 1,
IP_IGMPPROTO = 2,
IP_TCPPROTO = 6,
IP_UDPPROTO = 17,
IP_ILPROTO = 40,
IP_v6ROUTE = 43,
IP_v6FRAG = 44,
IP_IPsecESP = 50,
IP_IPsecAH = 51,
IP_v6NOMORE = 59,
ICMP6_RS = 133,
ICMP6_RA = 134,
IP_IN_IP = 41,
};
enum {
MFMASK = 1 << 7,
OCMASK = 1 << 6,
OLMASK = 1 << 7,
AFMASK = 1 << 6,
};
enum {
MAXTTL = 255,
D64HLEN = IPV6HDR_LEN - IPV4HDR_LEN,
IP_MAX = 32*1024,
};
struct Headers {
uchar dst[IPaddrlen];
uchar src[IPaddrlen];
};
struct Routersol {
uchar vcf[4]; /* version:4, traffic class:8, flow label:20 */
uchar ploadlen[2]; /* payload length: packet length - 40 */
uchar proto; /* next header type */
uchar ttl; /* hop limit */
uchar src[IPaddrlen];
uchar dst[IPaddrlen];
uchar type;
uchar code;
uchar cksum[2];
uchar res[4];
};
struct Routeradv {
uchar vcf[4]; /* version:4, traffic class:8, flow label:20 */
uchar ploadlen[2]; /* payload length: packet length - 40 */
uchar proto; /* next header type */
uchar ttl; /* hop limit */
uchar src[IPaddrlen];
uchar dst[IPaddrlen];
uchar type;
uchar code;
uchar cksum[2];
uchar cttl;
uchar mor;
uchar routerlt[2];
uchar rchbltime[4];
uchar rxmtimer[4];
};
struct Lladdropt {
uchar type;
uchar len;
uchar lladdr[MAClen];
};
struct Prefixopt {
uchar type;
uchar len;
uchar plen;
uchar lar;
uchar validlt[4];
uchar preflt[4];
uchar reserv[4];
uchar pref[IPaddrlen];
};
struct Mtuopt {
uchar type;
uchar len;
uchar reserv[2];
uchar mtu[4];
};
void ea2lla(uchar *lla, uchar *ea);
void ipv62smcast(uchar *smcast, uchar *a);