1 /* readnvram */
2 #include <u.h>
3 #include <libc.h>
4 #include <auth.h>
5 #include <authsrv.h>
6
7 void
main(int,char **)8 main(int, char **)
9 {
10 int i;
11 Nvrsafe safe;
12
13 quotefmtinstall();
14
15 memset(&safe, 0, sizeof safe);
16 /*
17 * readnvram can return -1 meaning nvram wasn't written,
18 * but safe still holds good data.
19 */
20 if(readnvram(&safe, 0) < 0 && safe.authid[0] == '\0')
21 sysfatal("readnvram: %r");
22
23 /*
24 * only use nvram key if it is non-zero
25 */
26 for(i = 0; i < DESKEYLEN; i++)
27 if(safe.machkey[i] != 0)
28 break;
29 if(i == DESKEYLEN)
30 sysfatal("bad key");
31
32 fmtinstall('H', encodefmt);
33 print("key proto=p9sk1 user=%q dom=%q !hex=%.*H !password=______\n",
34 safe.authid, safe.authdom, DESKEYLEN, safe.machkey);
35 exits(0);
36 }
37