The alternative would be to treat gvariant and !gvariant messages differently.
But this is a problem because we check signatures is variuos places before we
have an actual message, for example in sd_bus_add_object_vtable(). It seems
better to treat things consistent (i.e. follow the lowest common denominator)
and disallow empty structures everywhere.
/* signature_element_length does verification internally */
+ /* The array element must not be empty */
assert(l >= 1);
if (free_and_strndup(&c->peeked_signature,
c->signature + c->index + 1, l) < 0)
if (r < 0)
return r;
- assert(l >= 2);
+ assert(l >= 3);
if (free_and_strndup(&c->peeked_signature,
c->signature + c->index + 1, l - 2) < 0)
return -ENOMEM;
p += t;
}
+ if (p - s < 2)
+ /* D-Bus spec: Empty structures are not allowed; there
+ * must be at least one type code between the parentheses.
+ */
+ return -EINVAL;
+
*l = p - s + 1;
return 0;
}
static void test_bus_gvariant_is_fixed_size(void) {
assert_se(bus_gvariant_is_fixed_size("") > 0);
- assert_se(bus_gvariant_is_fixed_size("()") > 0);
+ assert_se(bus_gvariant_is_fixed_size("()") == -EINVAL);
assert_se(bus_gvariant_is_fixed_size("y") > 0);
assert_se(bus_gvariant_is_fixed_size("u") > 0);
assert_se(bus_gvariant_is_fixed_size("b") > 0);
static void test_bus_gvariant_get_size(void) {
assert_se(bus_gvariant_get_size("") == 0);
- assert_se(bus_gvariant_get_size("()") == 1);
+ assert_se(bus_gvariant_get_size("()") == -EINVAL);
assert_se(bus_gvariant_get_size("y") == 1);
assert_se(bus_gvariant_get_size("u") == 4);
assert_se(bus_gvariant_get_size("b") == 1);
static void test_bus_gvariant_get_alignment(void) {
assert_se(bus_gvariant_get_alignment("") == 1);
- assert_se(bus_gvariant_get_alignment("()") == 1);
+ assert_se(bus_gvariant_get_alignment("()") == -EINVAL);
assert_se(bus_gvariant_get_alignment("y") == 1);
assert_se(bus_gvariant_get_alignment("b") == 1);
assert_se(bus_gvariant_get_alignment("u") == 4);
assert_se(r >= 0);
r = sd_bus_message_append(m, "()");
- assert_se(r >= 0);
+ assert_se(r == -EINVAL);
r = sd_bus_message_append(m, "ba(ss)", 255, 3, "aaa", "1", "bbb", "2", "ccc", "3");
assert_se(r >= 0);
assert_se(v == 10);
r = sd_bus_message_read(m, "()");
- assert_se(r > 0);
+ assert_se(r < 0);
r = sd_bus_message_read(m, "ba(ss)", &boolean, 3, &x, &y, &a, &b, &c, &d);
assert_se(r > 0);
assert_se(sd_bus_message_verify_type(m, 'a', "{yv}") > 0);
- r = sd_bus_message_skip(m, "a{yv}y(ty)y(yt)y()");
+ r = sd_bus_message_skip(m, "a{yv}y(ty)y(yt)y");
assert_se(r >= 0);
assert_se(sd_bus_message_verify_type(m, 'b', NULL) > 0);
assert_se(signature_is_single("v", false));
assert_se(signature_is_single("as", false));
assert_se(signature_is_single("(ss)", false));
- assert_se(signature_is_single("()", false));
- assert_se(signature_is_single("(()()()()())", false));
- assert_se(signature_is_single("(((())))", false));
+ assert_se(!signature_is_single("()", false));
+ assert_se(!signature_is_single("(()()()()())", false));
+ assert_se(!signature_is_single("(((())))", false));
assert_se(signature_is_single("((((s))))", false));
assert_se(signature_is_single("{ss}", true));
assert_se(signature_is_single("a{ss}", false));
assert_se(signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaas", false));
assert_se(!signature_is_valid("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaau", false));
- assert_se(signature_is_valid("(((((((((((((((((((((((((((((((())))))))))))))))))))))))))))))))", false));
+ assert_se(signature_is_valid("((((((((((((((((((((((((((((((((s))))))))))))))))))))))))))))))))", false));
assert_se(!signature_is_valid("((((((((((((((((((((((((((((((((()))))))))))))))))))))))))))))))))", false));
assert_se(namespace_complex_pattern("", ""));