From ae72b22c40569de7dba810073ea9da299491ef60 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Mon, 20 Jul 2015 02:02:45 +0200 Subject: 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. --- src/test/test-dns-domain.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'src/test/test-dns-domain.c') diff --git a/src/test/test-dns-domain.c b/src/test/test-dns-domain.c index 9a5a2a1c23..31e110cf0d 100644 --- a/src/test/test-dns-domain.c +++ b/src/test/test-dns-domain.c @@ -160,6 +160,38 @@ static void test_dns_name_equal(void) { 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); } @@ -225,6 +257,7 @@ int main(int argc, char *argv[]) { 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(); -- cgit v1.2.3-54-g00ecf