new auth

1 files changed, 100 insertions, 0 deletions

diff --git a/src/cmd/auth/factotum/pass.c b/src/cmd/auth/factotum/pass.c
new file mode 100644
index 00000000..b3d4cb6a
--- /dev/null
+++ b/src/cmd/auth/factotum/pass.c
@@ -0,0 +1,100 @@
+/*
+ * 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?",
+};