1 87a52e04 2005-12-26 devnull #include <u.h>
  2 87a52e04 2005-12-26 devnull #include <libc.h>
  3 87a52e04 2005-12-26 devnull #include <ip.h>
  4 87a52e04 2005-12-26 devnull #include "dat.h"
  5 87a52e04 2005-12-26 devnull #include "protos.h"
  6 87a52e04 2005-12-26 devnull 
  7 87a52e04 2005-12-26 devnull typedef struct Hdr	Hdr;
  8 87a52e04 2005-12-26 devnull struct Hdr
  9 87a52e04 2005-12-26 devnull {
 10 87a52e04 2005-12-26 devnull 	uchar	sum[2];		/* Checksum including header */
 11 87a52e04 2005-12-26 devnull 	uchar	len[2];		/* Packet length */
 12 87a52e04 2005-12-26 devnull 	uchar	type;		/* Packet type */
 13 87a52e04 2005-12-26 devnull 	uchar	spec;		/* Special */
 14 87a52e04 2005-12-26 devnull 	uchar	sport[2];	/* Src port */
 15 87a52e04 2005-12-26 devnull 	uchar	dport[2];	/* Dst port */
 16 87a52e04 2005-12-26 devnull 	uchar	id[4];		/* Sequence id */
 17 87a52e04 2005-12-26 devnull 	uchar	ack[4];		/* Acked sequence */
 18 87a52e04 2005-12-26 devnull };
 19 87a52e04 2005-12-26 devnull 
 20 87a52e04 2005-12-26 devnull enum
 21 87a52e04 2005-12-26 devnull {
 22 cbeb0b26 2006-04-01 devnull 	ILLEN= 18
 23 87a52e04 2005-12-26 devnull };
 24 87a52e04 2005-12-26 devnull 
 25 87a52e04 2005-12-26 devnull enum
 26 87a52e04 2005-12-26 devnull {
 27 87a52e04 2005-12-26 devnull 	Os,
 28 87a52e04 2005-12-26 devnull 	Od,
 29 cbeb0b26 2006-04-01 devnull 	Osd
 30 87a52e04 2005-12-26 devnull };
 31 87a52e04 2005-12-26 devnull 
 32 fa325e9b 2020-01-10 cross static Field p_fields[] =
 33 87a52e04 2005-12-26 devnull {
 34 87a52e04 2005-12-26 devnull 	{"s",		Fnum,	Os,	"source port",	} ,
 35 87a52e04 2005-12-26 devnull 	{"d",		Fnum,	Od,	"dest port",	} ,
 36 87a52e04 2005-12-26 devnull 	{"a",		Fnum,	Osd,	"source/dest port",	} ,
 37 87a52e04 2005-12-26 devnull 	{"sd",		Fnum,	Osd,	"source/dest port",	} ,
 38 87a52e04 2005-12-26 devnull 	{0}
 39 87a52e04 2005-12-26 devnull };
 40 87a52e04 2005-12-26 devnull 
 41 87a52e04 2005-12-26 devnull static Mux p_mux[] =
 42 87a52e04 2005-12-26 devnull {
 43 87a52e04 2005-12-26 devnull 	{"ninep",	17007, },	/* exportfs */
 44 87a52e04 2005-12-26 devnull 	{"ninep",	17008, },	/* 9fs */
 45 87a52e04 2005-12-26 devnull 	{"ninep",	17005, },	/* ocpu */
 46 87a52e04 2005-12-26 devnull 	{"ninep",	17010, },	/* ncpu */
 47 87a52e04 2005-12-26 devnull 	{"ninep",	17013, },	/* cpu */
 48 cbeb0b26 2006-04-01 devnull 	{0}
 49 87a52e04 2005-12-26 devnull };
 50 87a52e04 2005-12-26 devnull 
 51 87a52e04 2005-12-26 devnull static void
 52 87a52e04 2005-12-26 devnull p_compile(Filter *f)
 53 87a52e04 2005-12-26 devnull {
 54 87a52e04 2005-12-26 devnull 	Mux *m;
 55 87a52e04 2005-12-26 devnull 
 56 87a52e04 2005-12-26 devnull 	if(f->op == '='){
 57 87a52e04 2005-12-26 devnull 		compile_cmp(udp.name, f, p_fields);
 58 87a52e04 2005-12-26 devnull 		return;
 59 87a52e04 2005-12-26 devnull 	}
 60 87a52e04 2005-12-26 devnull 	for(m = p_mux; m->name != nil; m++)
 61 87a52e04 2005-12-26 devnull 		if(strcmp(f->s, m->name) == 0){
 62 87a52e04 2005-12-26 devnull 			f->pr = m->pr;
 63 87a52e04 2005-12-26 devnull 			f->ulv = m->val;
 64 87a52e04 2005-12-26 devnull 			f->subop = Osd;
 65 87a52e04 2005-12-26 devnull 			return;
 66 87a52e04 2005-12-26 devnull 		}
 67 87a52e04 2005-12-26 devnull 	sysfatal("unknown il field or protocol: %s", f->s);
 68 87a52e04 2005-12-26 devnull }
 69 87a52e04 2005-12-26 devnull 
 70 87a52e04 2005-12-26 devnull static int
 71 87a52e04 2005-12-26 devnull p_filter(Filter *f, Msg *m)
 72 87a52e04 2005-12-26 devnull {
 73 87a52e04 2005-12-26 devnull 	Hdr *h;
 74 87a52e04 2005-12-26 devnull 
 75 87a52e04 2005-12-26 devnull 	if(m->pe - m->ps < ILLEN)
 76 87a52e04 2005-12-26 devnull 		return 0;
 77 87a52e04 2005-12-26 devnull 	h = (Hdr*)m->ps;
 78 87a52e04 2005-12-26 devnull 	m->ps += ILLEN;
 79 87a52e04 2005-12-26 devnull 
 80 87a52e04 2005-12-26 devnull 	switch(f->subop){
 81 87a52e04 2005-12-26 devnull 	case Os:
 82 87a52e04 2005-12-26 devnull 		return NetS(h->sport) == f->ulv;
 83 87a52e04 2005-12-26 devnull 	case Od:
 84 87a52e04 2005-12-26 devnull 		return NetS(h->dport) == f->ulv;
 85 87a52e04 2005-12-26 devnull 	case Osd:
 86 87a52e04 2005-12-26 devnull 		return NetS(h->sport) == f->ulv || NetS(h->dport) == f->ulv;
 87 87a52e04 2005-12-26 devnull 	}
 88 87a52e04 2005-12-26 devnull 	return 0;
 89 87a52e04 2005-12-26 devnull }
 90 87a52e04 2005-12-26 devnull 
 91 fa325e9b 2020-01-10 cross char *pktnames[] =
 92 87a52e04 2005-12-26 devnull {
 93 fa325e9b 2020-01-10 cross 	"Sync",
 94 87a52e04 2005-12-26 devnull 	"Data",
 95 87a52e04 2005-12-26 devnull 	"Dataquery",
 96 87a52e04 2005-12-26 devnull 	"Ack",
 97 87a52e04 2005-12-26 devnull 	"Query",
 98 87a52e04 2005-12-26 devnull 	"State",
 99 87a52e04 2005-12-26 devnull 	"Close"
100 87a52e04 2005-12-26 devnull };
101 87a52e04 2005-12-26 devnull 
102 87a52e04 2005-12-26 devnull static char*
103 87a52e04 2005-12-26 devnull pkttype(int t)
104 87a52e04 2005-12-26 devnull {
105 87a52e04 2005-12-26 devnull 	static char b[10];
106 fa325e9b 2020-01-10 cross 
107 87a52e04 2005-12-26 devnull 	if(t > 6){
108 87a52e04 2005-12-26 devnull 		sprint(b, "%d", t);
109 87a52e04 2005-12-26 devnull 		return b;
110 87a52e04 2005-12-26 devnull 	}
111 87a52e04 2005-12-26 devnull 	return pktnames[t];
112 87a52e04 2005-12-26 devnull }
113 87a52e04 2005-12-26 devnull 
114 87a52e04 2005-12-26 devnull static int
115 87a52e04 2005-12-26 devnull p_seprint(Msg *m)
116 87a52e04 2005-12-26 devnull {
117 87a52e04 2005-12-26 devnull 	Hdr *h;
118 87a52e04 2005-12-26 devnull 	int dport, sport;
119 87a52e04 2005-12-26 devnull 
120 87a52e04 2005-12-26 devnull 	if(m->pe - m->ps < ILLEN)
121 87a52e04 2005-12-26 devnull 		return -1;
122 87a52e04 2005-12-26 devnull 	h = (Hdr*)m->ps;
123 87a52e04 2005-12-26 devnull 	m->ps += ILLEN;
124 87a52e04 2005-12-26 devnull 
125 87a52e04 2005-12-26 devnull 	dport = NetS(h->dport);
126 87a52e04 2005-12-26 devnull 	sport = NetS(h->sport);
127 87a52e04 2005-12-26 devnull 	demux(p_mux, sport, dport, m, &dump);
128 87a52e04 2005-12-26 devnull 
129 87a52e04 2005-12-26 devnull 	m->p = seprint(m->p, m->e, "s=%d d=%d t=%s id=%lud ack=%lud spec=%d ck=%4.4ux ln=%d",
130 87a52e04 2005-12-26 devnull 			sport, dport, pkttype(h->type),
131 87a52e04 2005-12-26 devnull 			(ulong)NetL(h->id), (ulong)NetL(h->ack),
132 87a52e04 2005-12-26 devnull 			h->spec,
133 87a52e04 2005-12-26 devnull 			NetS(h->sum), NetS(h->len));
134 87a52e04 2005-12-26 devnull 	return 0;
135 87a52e04 2005-12-26 devnull }
136 87a52e04 2005-12-26 devnull 
137 87a52e04 2005-12-26 devnull Proto il =
138 87a52e04 2005-12-26 devnull {
139 87a52e04 2005-12-26 devnull 	"il",
140 87a52e04 2005-12-26 devnull 	p_compile,
141 87a52e04 2005-12-26 devnull 	p_filter,
142 87a52e04 2005-12-26 devnull 	p_seprint,
143 87a52e04 2005-12-26 devnull 	p_mux,
144 a38a1836 2006-02-14 devnull 	"%lud",
145 87a52e04 2005-12-26 devnull 	p_fields,
146 cbeb0b26 2006-04-01 devnull 	defaultframer
147 87a52e04 2005-12-26 devnull };