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Systemd/src/test/test-dns-domain.c
Tom Gundersen ae72b22c40 shared: dns-name - add dns_name_between() 
Given three DNS names this function indicates if the second argument lies
strictly between the first and the third according to the canonical DNS
name order. Note that the order is circular, so the last name is
considered to be before the first.
2015-07-28 00:07:32 +02:00

267 lines
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "macro.h"
#include "dns-domain.h"
static void test_dns_label_unescape_one(const char *what, const char *expect, size_t buffer_sz, int ret) {
char buffer[buffer_sz];
int r;
r = dns_label_unescape(&what, buffer, buffer_sz);
assert_se(r == ret);
if (r < 0)
return;
assert_se(streq(buffer, expect));
}
static void test_dns_label_unescape(void) {
test_dns_label_unescape_one("hallo", "hallo", 6, 5);
test_dns_label_unescape_one("hallo", "hallo", 4, -ENOSPC);
test_dns_label_unescape_one("", "", 10, 0);
test_dns_label_unescape_one("hallo\\.foobar", "hallo.foobar", 20, 12);
test_dns_label_unescape_one("hallo.foobar", "hallo", 10, 5);
test_dns_label_unescape_one("hallo\n.foobar", "hallo", 20, -EINVAL);
test_dns_label_unescape_one("hallo\\", "hallo", 20, -EINVAL);
test_dns_label_unescape_one("hallo\\032 ", "hallo ", 20, 7);
test_dns_label_unescape_one(".", "", 20, 0);
test_dns_label_unescape_one("..", "", 20, -EINVAL);
test_dns_label_unescape_one(".foobar", "", 20, -EINVAL);
test_dns_label_unescape_one("foobar.", "foobar", 20, 6);
}
static void test_dns_label_unescape_suffix_one(const char *what, const char *expect1, const char *expect2, size_t buffer_sz, int ret1, int ret2) {
char buffer[buffer_sz];
const char *label;
int r;
label = what + strlen(what);
r = dns_label_unescape_suffix(what, &label, buffer, buffer_sz);
assert_se(r == ret1);
if (r >= 0)
assert_se(streq(buffer, expect1));
r = dns_label_unescape_suffix(what, &label, buffer, buffer_sz);
assert_se(r == ret2);
if (r >= 0)
assert_se(streq(buffer, expect2));
}
static void test_dns_label_unescape_suffix(void) {
test_dns_label_unescape_suffix_one("hallo", "hallo", "", 6, 5, 0);
test_dns_label_unescape_suffix_one("hallo", "hallo", "", 4, -ENOSPC, -ENOSPC);
test_dns_label_unescape_suffix_one("", "", "", 10, 0, 0);
test_dns_label_unescape_suffix_one("hallo\\.foobar", "hallo.foobar", "", 20, 12, 0);
test_dns_label_unescape_suffix_one("hallo.foobar", "foobar", "hallo", 10, 6, 5);
test_dns_label_unescape_suffix_one("hallo.foobar\n", "foobar", "foobar", 20, -EINVAL, -EINVAL);
test_dns_label_unescape_suffix_one("hallo\\", "hallo", "hallo", 20, -EINVAL, -EINVAL);
test_dns_label_unescape_suffix_one("hallo\\032 ", "hallo ", "", 20, 7, 0);
test_dns_label_unescape_suffix_one(".", "", "", 20, 0, 0);
test_dns_label_unescape_suffix_one("..", "", "", 20, 0, 0);
test_dns_label_unescape_suffix_one(".foobar", "foobar", "", 20, 6, -EINVAL);
test_dns_label_unescape_suffix_one("foobar.", "", "foobar", 20, 0, 6);
test_dns_label_unescape_suffix_one("foo\\\\bar", "foo\\bar", "", 20, 7, 0);
test_dns_label_unescape_suffix_one("foo.bar", "bar", "foo", 20, 3, 3);
test_dns_label_unescape_suffix_one("foo..bar", "bar", "", 20, 3, -EINVAL);
test_dns_label_unescape_suffix_one("foo...bar", "bar", "", 20, 3, -EINVAL);
test_dns_label_unescape_suffix_one("foo\\.bar", "foo.bar", "", 20, 7, 0);
test_dns_label_unescape_suffix_one("foo\\\\.bar", "bar", "foo\\", 20, 3, 4);
test_dns_label_unescape_suffix_one("foo\\\\\\.bar", "foo\\.bar", "", 20, 8, 0);
}
static void test_dns_label_escape_one(const char *what, size_t l, const char *expect, int ret) {
_cleanup_free_ char *t = NULL;
int r;
r = dns_label_escape(what, l, &t);
assert_se(r == ret);
if (r < 0)
return;
assert_se(streq_ptr(expect, t));
}
static void test_dns_label_escape(void) {
test_dns_label_escape_one("", 0, "", 0);
test_dns_label_escape_one("hallo", 5, "hallo", 5);
test_dns_label_escape_one("hallo", 6, NULL, -EINVAL);
test_dns_label_escape_one("hallo hallo.foobar,waldi", 24, "hallo\\032hallo\\.foobar\\044waldi", 31);
}
static void test_dns_name_normalize_one(const char *what, const char *expect, int ret) {
_cleanup_free_ char *t = NULL;
int r;
r = dns_name_normalize(what, &t);
assert_se(r == ret);
if (r < 0)
return;
assert_se(streq_ptr(expect, t));
}
static void test_dns_name_normalize(void) {
test_dns_name_normalize_one("", "", 0);
test_dns_name_normalize_one("f", "f", 0);
test_dns_name_normalize_one("f.waldi", "f.waldi", 0);
test_dns_name_normalize_one("f \\032.waldi", "f\\032\\032.waldi", 0);
test_dns_name_normalize_one("\\000", NULL, -EINVAL);
test_dns_name_normalize_one("..", NULL, -EINVAL);
test_dns_name_normalize_one(".foobar", NULL, -EINVAL);
test_dns_name_normalize_one("foobar.", "foobar", 0);
test_dns_name_normalize_one(".", "", 0);
}
static void test_dns_name_equal_one(const char *a, const char *b, int ret) {
int r;
r = dns_name_equal(a, b);
assert_se(r == ret);
r = dns_name_equal(b, a);
assert_se(r == ret);
}
static void test_dns_name_equal(void) {
test_dns_name_equal_one("", "", true);
test_dns_name_equal_one("x", "x", true);
test_dns_name_equal_one("x", "x.", true);
test_dns_name_equal_one("abc.def", "abc.def", true);
test_dns_name_equal_one("abc.def", "ABC.def", true);
test_dns_name_equal_one("abc.def", "CBA.def", false);
test_dns_name_equal_one("", "xxx", false);
test_dns_name_equal_one("ab", "a", false);
test_dns_name_equal_one("\\000", "xxxx", -EINVAL);
test_dns_name_equal_one(".", "", true);
test_dns_name_equal_one(".", ".", true);
test_dns_name_equal_one("..", "..", -EINVAL);
}
static void test_dns_name_between_one(const char *a, const char *b, const char *c, int ret) {
int r;
r = dns_name_between(a, b, c);
assert_se(r == ret);
r = dns_name_between(c, b, a);
if (ret >= 0)
assert_se(r == 0);
else
assert_se(r == ret);
}
static void test_dns_name_between(void) {
/* see https://tools.ietf.org/html/rfc4034#section-6.1
Note that we use "\033.z.example" in stead of "\001.z.example" as we
consider the latter invalid */
test_dns_name_between_one("example", "a.example", "yljkjljk.a.example", true);
test_dns_name_between_one("a.example", "yljkjljk.a.example", "Z.a.example", true);
test_dns_name_between_one("yljkjljk.a.example", "Z.a.example", "zABC.a.EXAMPLE", true);
test_dns_name_between_one("Z.a.example", "zABC.a.EXAMPLE", "z.example", true);
test_dns_name_between_one("zABC.a.EXAMPLE", "z.example", "\\033.z.example", true);
test_dns_name_between_one("z.example", "\\033.z.example", "*.z.example", true);
test_dns_name_between_one("\\033.z.example", "*.z.example", "\\200.z.example", true);
test_dns_name_between_one("*.z.example", "\\200.z.example", "example", true);
test_dns_name_between_one("\\200.z.example", "example", "a.example", true);
test_dns_name_between_one("example", "a.example", "example", -EINVAL);
test_dns_name_between_one("example", "example", "yljkjljk.a.example", false);
test_dns_name_between_one("example", "yljkjljk.a.example", "yljkjljk.a.example", false);
}
static void test_dns_name_endswith_one(const char *a, const char *b, int ret) {
assert_se(dns_name_endswith(a, b) == ret);
}
static void test_dns_name_endswith(void) {
test_dns_name_endswith_one("", "", true);
test_dns_name_endswith_one("", "xxx", false);
test_dns_name_endswith_one("xxx", "", true);
test_dns_name_endswith_one("x", "x", true);
test_dns_name_endswith_one("x", "y", false);
test_dns_name_endswith_one("x.y", "y", true);
test_dns_name_endswith_one("x.y", "Y", true);
test_dns_name_endswith_one("x.y", "x", false);
test_dns_name_endswith_one("x.y.z", "Z", true);
test_dns_name_endswith_one("x.y.z", "y.Z", true);
test_dns_name_endswith_one("x.y.z", "x.y.Z", true);
test_dns_name_endswith_one("x.y.z", "waldo", false);
test_dns_name_endswith_one("x.y.z.u.v.w", "y.z", false);
test_dns_name_endswith_one("x.y.z.u.v.w", "u.v.w", true);
test_dns_name_endswith_one("x.y\001.z", "waldo", -EINVAL);
}
static void test_dns_name_root(void) {
assert_se(dns_name_root("") == true);
assert_se(dns_name_root(".") == true);
assert_se(dns_name_root("xxx") == false);
assert_se(dns_name_root("xxx.") == false);
assert_se(dns_name_root("..") == -EINVAL);
}
static void test_dns_name_single_label(void) {
assert_se(dns_name_single_label("") == false);
assert_se(dns_name_single_label(".") == false);
assert_se(dns_name_single_label("..") == -EINVAL);
assert_se(dns_name_single_label("x") == true);
assert_se(dns_name_single_label("x.") == true);
assert_se(dns_name_single_label("xx.yy") == false);
}
static void test_dns_name_reverse_one(const char *address, const char *name) {
_cleanup_free_ char *p = NULL;
union in_addr_union a, b = {};
int familya, familyb;
assert_se(in_addr_from_string_auto(address, &familya, &a) >= 0);
assert_se(dns_name_reverse(familya, &a, &p) >= 0);
assert_se(streq(p, name));
assert_se(dns_name_address(p, &familyb, &b) > 0);
assert_se(familya == familyb);
assert_se(in_addr_equal(familya, &a, &b));
}
static void test_dns_name_reverse(void) {
test_dns_name_reverse_one("47.11.8.15", "15.8.11.47.in-addr.arpa");
test_dns_name_reverse_one("fe80::47", "7.4.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa");
}
int main(int argc, char *argv[]) {
test_dns_label_unescape();
test_dns_label_unescape_suffix();
test_dns_label_escape();
test_dns_name_normalize();
test_dns_name_equal();
test_dns_name_endswith();
test_dns_name_between();
test_dns_name_root();
test_dns_name_single_label();
test_dns_name_reverse();
return 0;
}
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