diff options
| -rw-r--r-- | src/shared/dns-domain.c | 4 | ||||
| -rw-r--r-- | src/test/test-dns-domain.c | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c index 835557c6b2..892f0aadf5 100644 --- a/src/shared/dns-domain.c +++ b/src/shared/dns-domain.c @@ -131,6 +131,10 @@ int dns_label_unescape(const char **name, char *dest, size_t sz) { if (r == 0 && *n) return -EINVAL; + /* More than one trailing dot? */ + if (*n == '.') + return -EINVAL; + if (sz >= 1 && d) *d = 0; diff --git a/src/test/test-dns-domain.c b/src/test/test-dns-domain.c index a9d09f59bc..e2f097c95e 100644 --- a/src/test/test-dns-domain.c +++ b/src/test/test-dns-domain.c @@ -48,6 +48,7 @@ static void test_dns_label_unescape(void) { test_dns_label_unescape_one("..", "", 20, -EINVAL); test_dns_label_unescape_one(".foobar", "", 20, -EINVAL); test_dns_label_unescape_one("foobar.", "foobar", 20, 6); + test_dns_label_unescape_one("foobar..", "foobar", 20, -EINVAL); } static void test_dns_name_to_wire_format_one(const char *what, const char *expect, size_t buffer_sz, int ret) { @@ -359,6 +360,7 @@ static void test_dns_name_is_valid_one(const char *s, int ret) { static void test_dns_name_is_valid(void) { test_dns_name_is_valid_one("foo", 1); test_dns_name_is_valid_one("foo.", 1); + test_dns_name_is_valid_one("foo..", 0); test_dns_name_is_valid_one("Foo", 1); test_dns_name_is_valid_one("foo.bar", 1); test_dns_name_is_valid_one("foo.bar.baz", 1); @@ -366,6 +368,7 @@ static void test_dns_name_is_valid(void) { test_dns_name_is_valid_one("foo..bar", 0); test_dns_name_is_valid_one(".foo.bar", 0); test_dns_name_is_valid_one("foo.bar.", 1); + test_dns_name_is_valid_one("foo.bar..", 0); test_dns_name_is_valid_one("\\zbar", 0); test_dns_name_is_valid_one("รค", 1); test_dns_name_is_valid_one("\n", 0); |