| |
| enum |
| { |
| OfferTimeout= 60, /* when an offer times out */ |
| MaxLease= 60*60, /* longest lease for dynamic binding */ |
| MinLease= 15*60, /* shortest lease for dynamic binding */ |
| StaticLease= 30*60, /* lease for static binding */ |
| |
| IPUDPHDRSIZE= 28, /* size of an IP plus UDP header */ |
| MINSUPPORTED= 576, /* biggest IP message the client must support */ |
| |
| /* lengths of some bootp fields */ |
| Maxhwlen= 16, |
| Maxfilelen= 128, |
| Maxoptlen= 312-4, |
| |
| /* bootp types */ |
| Bootrequest= 1, |
| Bootreply= 2, |
| |
| /* bootp flags */ |
| Fbroadcast= 1<<15, |
| |
| /* dhcp types */ |
| Discover= 1, |
| Offer= 2, |
| Request= 3, |
| Decline= 4, |
| Ack= 5, |
| Nak= 6, |
| Release= 7, |
| Inform= 8, |
| |
| /* bootp option types */ |
| OBend= 255, |
| OBpad= 0, |
| OBmask= 1, |
| OBtimeoff= 2, |
| OBrouter= 3, |
| OBtimeserver= 4, |
| OBnameserver= 5, |
| OBdnserver= 6, |
| OBlogserver= 7, |
| OBcookieserver= 8, |
| OBlprserver= 9, |
| OBimpressserver= 10, |
| OBrlserver= 11, |
| OBhostname= 12, /* 0xc0 */ |
| OBbflen= 13, |
| OBdumpfile= 14, |
| OBdomainname= 15, |
| OBswapserver= 16, /* 0x10 */ |
| OBrootpath= 17, |
| OBextpath= 18, |
| OBipforward= 19, |
| OBnonlocal= 20, |
| OBpolicyfilter= 21, |
| OBmaxdatagram= 22, |
| OBttl= 23, |
| OBpathtimeout= 24, |
| OBpathplateau= 25, |
| OBmtu= 26, |
| OBsubnetslocal= 27, |
| OBbaddr= 28, |
| OBdiscovermask= 29, |
| OBsupplymask= 30, |
| OBdiscoverrouter= 31, |
| OBrsserver= 32, /* 0x20 */ |
| OBstaticroutes= 33, |
| OBtrailerencap= 34, |
| OBarptimeout= 35, |
| OBetherencap= 36, |
| OBtcpttl= 37, |
| OBtcpka= 38, |
| OBtcpkag= 39, |
| OBnisdomain= 40, |
| OBniserver= 41, |
| OBntpserver= 42, |
| OBvendorinfo= 43, /* 0x2b */ |
| OBnetbiosns= 44, |
| OBnetbiosdds= 45, |
| OBnetbiostype= 46, |
| OBnetbiosscope= 47, |
| OBxfontserver= 48, /* 0x30 */ |
| OBxdispmanager= 49, |
| OBnisplusdomain= 64, /* 0x40 */ |
| OBnisplusserver= 65, |
| OBhomeagent= 68, |
| OBsmtpserver= 69, |
| OBpop3server= 70, |
| OBnntpserver= 71, |
| OBwwwserver= 72, |
| OBfingerserver= 73, |
| OBircserver= 74, |
| OBstserver= 75, |
| OBstdaserver= 76, |
| |
| /* dhcp options */ |
| ODipaddr= 50, /* 0x32 */ |
| ODlease= 51, |
| ODoverload= 52, |
| ODtype= 53, /* 0x35 */ |
| ODserverid= 54, /* 0x36 */ |
| ODparams= 55, /* 0x37 */ |
| ODmessage= 56, |
| ODmaxmsg= 57, |
| ODrenewaltime= 58, |
| ODrebindingtime= 59, |
| ODvendorclass= 60, |
| ODclientid= 61, /* 0x3d */ |
| ODtftpserver= 66, |
| ODbootfile= 67, |
| |
| /* plan9 vendor info options */ |
| OP9fs= 128, // plan9 file servers |
| OP9auth= 129, // plan9 auth servers |
| }; |
| |
| /* a lease that never expires */ |
| #define Lforever 0xffffffffU |
| |
| /* dhcp states */ |
| enum { |
| Sinit, |
| Sselecting, |
| Srequesting, |
| Sbound, |
| Srenewing, |
| Srebinding |
| }; |
| |
| typedef struct Bootp Bootp; |
| struct Bootp |
| { |
| uchar op; /* opcode */ |
| uchar htype; /* hardware type */ |
| uchar hlen; /* hardware address len */ |
| uchar hops; /* hops */ |
| uchar xid[4]; /* a random number */ |
| uchar secs[2]; /* elapsed since client started booting */ |
| uchar flags[2]; |
| uchar ciaddr[IPv4addrlen]; /* client IP address (client tells server) */ |
| uchar yiaddr[IPv4addrlen]; /* client IP address (server tells client) */ |
| uchar siaddr[IPv4addrlen]; /* server IP address */ |
| uchar giaddr[IPv4addrlen]; /* gateway IP address */ |
| uchar chaddr[Maxhwlen]; /* client hardware address */ |
| char sname[64]; /* server host name (optional) */ |
| char file[Maxfilelen]; /* boot file name */ |
| uchar optmagic[4]; |
| uchar optdata[Maxoptlen]; |
| }; |
