1 #include <u.h>
2 #include <libc.h>
3 #include <auth.h>
4 
5 int
6 auth_getkey(char *params)
7 {
8 	char *name;
9 	Dir *d;
10 	int pid;
11 	Waitmsg *w;
12 
13 	/* start /factotum to query for a key */
14 	name = "/factotum";
15 	d = dirstat(name);
16 	if(d == nil){
17 		name = "/boot/factotum";
18 		d = dirstat(name);
19 	}
20 	if(d == nil){
21 		werrstr("auth_getkey: no /factotum or /boot/factotum: didn't get key %s", params);
22 		return -1;
23 	}
24 if(0)	if(d->type != '/'){
25 		werrstr("auth_getkey: /factotum may be bad: didn't get key %s", params);
26 		return -1;
27 	}
28 	switch(pid = fork()){
29 	case -1:
30 		werrstr("can't fork for %s: %r", name);
31 		return -1;
32 	case 0:
33 		execl(name, "getkey", "-g", params, nil);
34 		exits(0);
35 	default:
36 		for(;;){
37 			w = wait();
38 			if(w == nil)
39 				break;
40 			if(w->pid == pid){
41 				if(w->msg[0] != '\0'){
42 					free(w);
43 					return -1;
44 				}
45 				free(w);
46 				return 0;
47 			}
48 		}
49 	}
50 	return 0;
51 }