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/*
* This is just a repository for a password.
* We don't want to encourage this, there's
* no server side.
*/
#include "dat.h"
typedef struct State State;
struct State
{
Key *key;
};
enum
{
HavePass,
Maxphase,
};
static char *phasenames[Maxphase] =
{
[HavePass] "HavePass",
};
static int
passinit(Proto *p, Fsstate *fss)
{
int ask;
Key *k;
State *s;
k = findkey(fss, Kuser, &ask, 0, fss->attr, "%s", p->keyprompt);
if(k == nil){
if(ask)
return RpcNeedkey;
return failure(fss, nil);
}
setattrs(fss->attr, k->attr);
s = emalloc(sizeof(*s));
s->key = k;
fss->ps = s;
return RpcOk;
}
static void
passclose(Fsstate *fss)
{
State *s;
s = fss->ps;
if(s->key)
closekey(s->key);
free(s);
}
static int
passread(Fsstate *fss, void *va, uint *n)
{
int m;
char buf[500];
char *pass, *user;
State *s;
s = fss->ps;
switch(fss->phase){
default:
return phaseerror(fss, "read");
case HavePass:
user = strfindattr(s->key->attr, "user");
pass = strfindattr(s->key->privattr, "!password");
if(user==nil || pass==nil)
return failure(fss, "passread cannot happen");
snprint(buf, sizeof buf, "%q %q", user, pass);
m = strlen(buf);
if(m > *n)
return toosmall(fss, m);
*n = m;
memmove(va, buf, m);
return RpcOk;
}
}
static int
passwrite(Fsstate *fss, void*, uint)
{
return phaseerror(fss, "write");
}
Proto pass =
{
.name= "pass",
.init= passinit,
.write= passwrite,
.read= passread,
.close= passclose,
.addkey= replacekey,
.keyprompt= "user? !password?",
};
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