1 d7094239 2003-11-23 devnull #include <u.h>
2 d7094239 2003-11-23 devnull #include <libc.h>
3 d7094239 2003-11-23 devnull #include <ip.h>
7 d7094239 2003-11-23 devnull Isprefix= 16,
10 5241ed2b 2004-07-03 devnull // XXX: manually initialize once to placate the Sun monster
11 5241ed2b 2004-07-03 devnull uchar prefixvals[256];
12 5241ed2b 2004-07-03 devnull #ifdef NOTDEF
13 d7094239 2003-11-23 devnull uchar prefixvals[256] =
15 d7094239 2003-11-23 devnull [0x00] 0 | Isprefix,
16 d7094239 2003-11-23 devnull [0x80] 1 | Isprefix,
17 d7094239 2003-11-23 devnull [0xC0] 2 | Isprefix,
18 d7094239 2003-11-23 devnull [0xE0] 3 | Isprefix,
19 d7094239 2003-11-23 devnull [0xF0] 4 | Isprefix,
20 d7094239 2003-11-23 devnull [0xF8] 5 | Isprefix,
21 d7094239 2003-11-23 devnull [0xFC] 6 | Isprefix,
22 d7094239 2003-11-23 devnull [0xFE] 7 | Isprefix,
23 d7094239 2003-11-23 devnull [0xFF] 8 | Isprefix,
28 d7094239 2003-11-23 devnull eipfmt(Fmt *f)
30 d7094239 2003-11-23 devnull char buf[5*8];
31 d7094239 2003-11-23 devnull static char *efmt = "%.2lux%.2lux%.2lux%.2lux%.2lux%.2lux";
32 d7094239 2003-11-23 devnull static char *ifmt = "%d.%d.%d.%d";
33 d7094239 2003-11-23 devnull uchar *p, ip[16];
34 d7094239 2003-11-23 devnull ulong *lp;
35 d7094239 2003-11-23 devnull ushort s;
36 d7094239 2003-11-23 devnull int i, j, n, eln, eli;
38 5241ed2b 2004-07-03 devnull static int once = 0; // XXX: placate the Sun monster
40 5241ed2b 2004-07-03 devnull if(!once){
41 5241ed2b 2004-07-03 devnull once = 1;
42 5241ed2b 2004-07-03 devnull memset(prefixvals, 0, sizeof(prefixvals));
43 5241ed2b 2004-07-03 devnull prefixvals[0x00] = 0 | Isprefix;
44 5241ed2b 2004-07-03 devnull prefixvals[0x80] = 1 | Isprefix;
45 5241ed2b 2004-07-03 devnull prefixvals[0xC0] = 2 | Isprefix;
46 5241ed2b 2004-07-03 devnull prefixvals[0xE0] = 3 | Isprefix;
47 5241ed2b 2004-07-03 devnull prefixvals[0xF0] = 4 | Isprefix;
48 5241ed2b 2004-07-03 devnull prefixvals[0xF8] = 5 | Isprefix;
49 5241ed2b 2004-07-03 devnull prefixvals[0xFC] = 6 | Isprefix;
50 5241ed2b 2004-07-03 devnull prefixvals[0xFE] = 7 | Isprefix;
51 5241ed2b 2004-07-03 devnull prefixvals[0xFF] = 8 | Isprefix;
54 d7094239 2003-11-23 devnull switch(f->r) {
55 d7094239 2003-11-23 devnull case 'E': /* Ethernet address */
56 d7094239 2003-11-23 devnull p = va_arg(f->args, uchar*);
57 d7094239 2003-11-23 devnull snprint(buf, sizeof buf, efmt, p[0], p[1], p[2], p[3], p[4], p[5]);
58 d7094239 2003-11-23 devnull return fmtstrcpy(f, buf);
60 d7094239 2003-11-23 devnull case 'I': /* Ip address */
61 d7094239 2003-11-23 devnull p = va_arg(f->args, uchar*);
63 d7094239 2003-11-23 devnull if(memcmp(p, v4prefix, 12) == 0){
64 d7094239 2003-11-23 devnull snprint(buf, sizeof buf, ifmt, p[12], p[13], p[14], p[15]);
65 d7094239 2003-11-23 devnull return fmtstrcpy(f, buf);
68 d7094239 2003-11-23 devnull /* find longest elision */
69 d7094239 2003-11-23 devnull eln = eli = -1;
70 d7094239 2003-11-23 devnull for(i = 0; i < 16; i += 2){
71 d7094239 2003-11-23 devnull for(j = i; j < 16; j += 2)
72 d7094239 2003-11-23 devnull if(p[j] != 0 || p[j+1] != 0)
74 d7094239 2003-11-23 devnull if(j > i && j - i > eln){
76 d7094239 2003-11-23 devnull eln = j - i;
80 d7094239 2003-11-23 devnull /* print with possible elision */
82 d7094239 2003-11-23 devnull for(i = 0; i < 16; i += 2){
83 d7094239 2003-11-23 devnull if(i == eli){
84 d7094239 2003-11-23 devnull n += sprint(buf+n, "::");
85 d7094239 2003-11-23 devnull i += eln;
86 d7094239 2003-11-23 devnull if(i >= 16)
88 d7094239 2003-11-23 devnull } else if(i != 0)
89 d7094239 2003-11-23 devnull n += sprint(buf+n, ":");
90 d7094239 2003-11-23 devnull s = (p[i]<<8) + p[i+1];
91 d7094239 2003-11-23 devnull n += sprint(buf+n, "%ux", s);
93 d7094239 2003-11-23 devnull return fmtstrcpy(f, buf);
95 d7094239 2003-11-23 devnull case 'i': /* v6 address as 4 longs */
96 d7094239 2003-11-23 devnull lp = va_arg(f->args, ulong*);
97 d7094239 2003-11-23 devnull for(i = 0; i < 4; i++)
98 d7094239 2003-11-23 devnull hnputl(ip+4*i, *lp++);
100 d7094239 2003-11-23 devnull goto common;
102 d7094239 2003-11-23 devnull case 'V': /* v4 ip address */
103 d7094239 2003-11-23 devnull p = va_arg(f->args, uchar*);
104 d7094239 2003-11-23 devnull snprint(buf, sizeof buf, ifmt, p[0], p[1], p[2], p[3]);
105 d7094239 2003-11-23 devnull return fmtstrcpy(f, buf);
107 d7094239 2003-11-23 devnull case 'M': /* ip mask */
108 d7094239 2003-11-23 devnull p = va_arg(f->args, uchar*);
110 d7094239 2003-11-23 devnull /* look for a prefix mask */
111 d7094239 2003-11-23 devnull for(i = 0; i < 16; i++)
112 d7094239 2003-11-23 devnull if(p[i] != 0xff)
114 d7094239 2003-11-23 devnull if(i < 16){
115 d7094239 2003-11-23 devnull if((prefixvals[p[i]] & Isprefix) == 0)
116 d7094239 2003-11-23 devnull goto common;
117 d7094239 2003-11-23 devnull for(j = i+1; j < 16; j++)
118 d7094239 2003-11-23 devnull if(p[j] != 0)
119 d7094239 2003-11-23 devnull goto common;
120 d7094239 2003-11-23 devnull n = 8*i + (prefixvals[p[i]] & ~Isprefix);
122 d7094239 2003-11-23 devnull n = 8*16;
124 d7094239 2003-11-23 devnull /* got one, use /xx format */
125 d7094239 2003-11-23 devnull snprint(buf, sizeof buf, "/%d", n);
126 d7094239 2003-11-23 devnull return fmtstrcpy(f, buf);
128 d7094239 2003-11-23 devnull return fmtstrcpy(f, "(eipfmt)");
