1 2277c5d7 2004-03-21 devnull /*
  2 2277c5d7 2004-03-21 devnull  * This is just a repository for a password.
  3 2277c5d7 2004-03-21 devnull  * We don't want to encourage this, there's
  4 2277c5d7 2004-03-21 devnull  * no server side.
  5 2277c5d7 2004-03-21 devnull  */
  6 2277c5d7 2004-03-21 devnull 
  7 2277c5d7 2004-03-21 devnull #include "dat.h"
  8 2277c5d7 2004-03-21 devnull 
  9 2277c5d7 2004-03-21 devnull typedef struct State State;
 10 2277c5d7 2004-03-21 devnull struct State 
 11 2277c5d7 2004-03-21 devnull {
 12 2277c5d7 2004-03-21 devnull 	Key *key;
 13 2277c5d7 2004-03-21 devnull };
 14 2277c5d7 2004-03-21 devnull 
 15 2277c5d7 2004-03-21 devnull enum
 16 2277c5d7 2004-03-21 devnull {
 17 2277c5d7 2004-03-21 devnull 	HavePass,
 18 2277c5d7 2004-03-21 devnull 	Maxphase,
 19 2277c5d7 2004-03-21 devnull };
 20 2277c5d7 2004-03-21 devnull 
 21 2277c5d7 2004-03-21 devnull static char *phasenames[Maxphase] =
 22 2277c5d7 2004-03-21 devnull {
 23 2277c5d7 2004-03-21 devnull [HavePass]	"HavePass",
 24 2277c5d7 2004-03-21 devnull };
 25 2277c5d7 2004-03-21 devnull 
 26 2277c5d7 2004-03-21 devnull static int
 27 2277c5d7 2004-03-21 devnull passinit(Proto *p, Fsstate *fss)
 28 2277c5d7 2004-03-21 devnull {
 29 2277c5d7 2004-03-21 devnull 	int ask;
 30 2277c5d7 2004-03-21 devnull 	Key *k;
 31 2277c5d7 2004-03-21 devnull 	State *s;
 32 2277c5d7 2004-03-21 devnull 
 33 2277c5d7 2004-03-21 devnull 	k = findkey(fss, Kuser, &ask, 0, fss->attr, "%s", p->keyprompt);
 34 2277c5d7 2004-03-21 devnull 	if(k == nil){
 35 2277c5d7 2004-03-21 devnull 		if(ask)
 36 2277c5d7 2004-03-21 devnull 			return RpcNeedkey;
 37 2277c5d7 2004-03-21 devnull 		return failure(fss, nil);
 38 2277c5d7 2004-03-21 devnull 	}
 39 2277c5d7 2004-03-21 devnull 	setattrs(fss->attr, k->attr);
 40 2277c5d7 2004-03-21 devnull 	s = emalloc(sizeof(*s));
 41 2277c5d7 2004-03-21 devnull 	s->key = k;
 42 2277c5d7 2004-03-21 devnull 	fss->ps = s;
 43 2277c5d7 2004-03-21 devnull 	return RpcOk;
 44 2277c5d7 2004-03-21 devnull }
 45 2277c5d7 2004-03-21 devnull 
 46 2277c5d7 2004-03-21 devnull static void
 47 2277c5d7 2004-03-21 devnull passclose(Fsstate *fss)
 48 2277c5d7 2004-03-21 devnull {
 49 2277c5d7 2004-03-21 devnull 	State *s;
 50 2277c5d7 2004-03-21 devnull 
 51 2277c5d7 2004-03-21 devnull 	s = fss->ps;
 52 2277c5d7 2004-03-21 devnull 	if(s->key)
 53 2277c5d7 2004-03-21 devnull 		closekey(s->key);
 54 2277c5d7 2004-03-21 devnull 	free(s);
 55 2277c5d7 2004-03-21 devnull }
 56 2277c5d7 2004-03-21 devnull 
 57 2277c5d7 2004-03-21 devnull static int
 58 2277c5d7 2004-03-21 devnull passread(Fsstate *fss, void *va, uint *n)
 59 2277c5d7 2004-03-21 devnull {
 60 2277c5d7 2004-03-21 devnull 	int m;
 61 2277c5d7 2004-03-21 devnull 	char buf[500];
 62 2277c5d7 2004-03-21 devnull 	char *pass, *user;
 63 2277c5d7 2004-03-21 devnull 	State *s;
 64 2277c5d7 2004-03-21 devnull 
 65 2277c5d7 2004-03-21 devnull 	s = fss->ps;
 66 2277c5d7 2004-03-21 devnull 	switch(fss->phase){
 67 2277c5d7 2004-03-21 devnull 	default:
 68 2277c5d7 2004-03-21 devnull 		return phaseerror(fss, "read");
 69 2277c5d7 2004-03-21 devnull 
 70 2277c5d7 2004-03-21 devnull 	case HavePass:
 71 2277c5d7 2004-03-21 devnull 		user = strfindattr(s->key->attr, "user");
 72 2277c5d7 2004-03-21 devnull 		pass = strfindattr(s->key->privattr, "!password");
 73 2277c5d7 2004-03-21 devnull 		if(user==nil || pass==nil)
 74 2277c5d7 2004-03-21 devnull 			return failure(fss, "passread cannot happen");
 75 2277c5d7 2004-03-21 devnull 		snprint(buf, sizeof buf, "%q %q", user, pass);
 76 2277c5d7 2004-03-21 devnull 		m = strlen(buf);
 77 2277c5d7 2004-03-21 devnull 		if(m > *n)
 78 2277c5d7 2004-03-21 devnull 			return toosmall(fss, m);
 79 2277c5d7 2004-03-21 devnull 		*n = m;
 80 2277c5d7 2004-03-21 devnull 		memmove(va, buf, m);
 81 2277c5d7 2004-03-21 devnull 		return RpcOk;
 82 2277c5d7 2004-03-21 devnull 	}
 83 2277c5d7 2004-03-21 devnull }
 84 2277c5d7 2004-03-21 devnull 
 85 2277c5d7 2004-03-21 devnull static int
 86 2277c5d7 2004-03-21 devnull passwrite(Fsstate *fss, void*, uint)
 87 2277c5d7 2004-03-21 devnull {
 88 2277c5d7 2004-03-21 devnull 	return phaseerror(fss, "write");
 89 2277c5d7 2004-03-21 devnull }
 90 2277c5d7 2004-03-21 devnull 
 91 2277c5d7 2004-03-21 devnull Proto pass =
 92 2277c5d7 2004-03-21 devnull {
 93 2277c5d7 2004-03-21 devnull .name=		"pass",
 94 2277c5d7 2004-03-21 devnull .init=		passinit,
 95 2277c5d7 2004-03-21 devnull .write=		passwrite,
 96 2277c5d7 2004-03-21 devnull .read=		passread,
 97 2277c5d7 2004-03-21 devnull .close=		passclose,
 98 2277c5d7 2004-03-21 devnull .addkey=		replacekey,
 99 2277c5d7 2004-03-21 devnull .keyprompt=	"user? !password?",
100 2277c5d7 2004-03-21 devnull };