Npcfid*
npc_auth (Npcfsys *fs, char *aname, u32 uid, AuthFun auth)
{
Npcfid *afid = NULL;
Npfcall *tc = NULL, *rc = NULL;
if (!(afid = npc_fid_alloc (fs)))
goto done;
if (!(tc = np_create_tauth (afid->fid, NULL, aname, uid))) {
np_uerror (ENOMEM);
npc_fid_free (afid);
afid = NULL;
goto done;
}
if (afid->fsys->rpc (afid->fsys, tc, &rc) < 0) {
npc_fid_free (afid);
afid = NULL;
goto done;
}
if (auth && auth (afid, uid) < 0) {
int saved_err = np_rerror ();
(void)npc_clunk (afid);
afid = NULL;
np_uerror (saved_err);
goto done;
}
done:
if (tc)
free(tc);
if (rc)
free(rc);
return afid;
}
static void
_send_tauth (Nptrans *t)
{
Npfcall *tc, *rc = _alloc_rc ();
tc = np_create_tauth (0, NULL, "/foo", 0);
if (!tc)
msg_exit ("oom");
ttrans_rpc (t, tc, rc);
free (tc);
free (rc);
}
static void
test_tauth (void)
{
Npfcall *fc, *fc2;
if (!(fc = np_create_tauth (1, "abc", "xyz", 4)))
msg_exit ("out of memory in %s", __FUNCTION__);
fc2 = _rcv_buf (fc, P9_TAUTH, __FUNCTION__);
assert (fc->u.tauth.afid == fc2->u.tauth.afid);
assert (np_str9cmp (&fc->u.tauth.uname, &fc2->u.tauth.uname) == 0);
assert (np_str9cmp (&fc->u.tauth.aname, &fc2->u.tauth.aname) == 0);
assert (fc->u.tauth.n_uname == fc2->u.tauth.n_uname);
free (fc);
free (fc2);
}
Npcfsys*
npc_mount(int fd, char *aname, Npuser *user,
int (*auth)(Npcfid *afid, Npuser *user, void *aux), void *aux)
{
Npcfsys *fs;
Npfcall *tc, *rc;
fs = npc_create_fsys(fd, 8216);
if (!fs)
return NULL;
tc = np_create_tversion(8216, "9P2000.u");
if (npc_rpc(fs, tc, &rc) < 0)
goto error;
if (rc->version.len==8 && !memcmp(rc->version.str, "9P2000.u", 8)) {
fs->dotu = 1;
} else if (rc->version.len==6 && !memcmp(rc->version.str, "9P2000", 6)) {
fs->dotu = 0;
} else {
np_werror("unsupported 9P version", EIO);
goto error;
}
free(tc);
free(rc);
tc = rc = NULL;
if (auth) {
fs->afid = npc_fid_alloc(fs);
if (!fs->afid)
goto error;
tc = np_create_tauth(fs->afid->fid, user?user->uname:NULL, aname,
user?user->uid:-1, fs->dotu);
if (npc_rpc(fs, tc, &rc) < 0) {
npc_fid_free(fs->afid);
fs->afid = NULL;
} else if ((*auth)(fs->afid, user, aux) < 0)
goto error;
free(tc);
free(rc);
tc = rc = NULL;
}
fs->root = npc_fid_alloc(fs);
if (!fs->root)
goto error;
tc = np_create_tattach(fs->root->fid, fs->afid?fs->afid->fid:NOFID,
user->uname, aname, user->uid, fs->dotu);
if (npc_rpc(fs, tc, &rc) < 0)
goto error;
free(tc);
free(rc);
return fs;
error:
free(tc);
free(rc);
npc_disconnect_fsys(fs);
npc_decref_fsys(fs);
return NULL;
}