hostname-util: add relax parameter to hostname_is_valid

Tests are modified to check behaviour with relax and without relax.
New tests are added for hostname_cleanup().
Tests are moved a new file (test-hostname-util) because there's
now a bunch of them.

New parameter is not used anywhere, except in tests, so there should
be no observable change.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/hostname/hostnamed.c b/src/hostname/hostnamed.c
index e52b872a8c..a78516c8b5 100644
--- a/src/hostname/hostnamed.c
+++ b/src/hostname/hostnamed.c
@@ -424,7 +424,7 @@ static int method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *
         if (isempty(name))
                 name = "localhost";
 
-        if (!hostname_is_valid(name))
+        if (!hostname_is_valid(name, false))
                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name);
 
         if (streq_ptr(name, c->data[PROP_HOSTNAME]))
@@ -501,7 +501,7 @@ static int method_set_static_hostname(sd_bus_message *m, void *userdata, sd_bus_
         } else {
                 char *h;
 
-                if (!hostname_is_valid(name))
+                if (!hostname_is_valid(name, false))
                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name);
 
                 h = strdup(name);