e97708fa3e
As described in #15603, it is a fairly common setup to use a fqdn as the configured hostname. But it is often convenient to use just the actual hostname, i.e. until the first dot. This adds support in tmpfiles, sysusers, and unit files for %l which expands to that. Fixes #15603.
173 lines
7.1 KiB
C
173 lines
7.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <unistd.h>
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#include "alloc-util.h"
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#include "fileio.h"
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#include "hostname-util.h"
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#include "string-util.h"
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#include "tmpfile-util.h"
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#include "util.h"
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static void test_hostname_is_valid(void) {
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assert_se(hostname_is_valid("foobar", false));
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assert_se(hostname_is_valid("foobar.com", false));
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assert_se(!hostname_is_valid("foobar.com.", false));
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assert_se(hostname_is_valid("fooBAR", false));
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assert_se(hostname_is_valid("fooBAR.com", false));
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assert_se(!hostname_is_valid("fooBAR.", false));
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assert_se(!hostname_is_valid("fooBAR.com.", false));
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assert_se(!hostname_is_valid("fööbar", false));
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assert_se(!hostname_is_valid("", false));
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assert_se(!hostname_is_valid(".", false));
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assert_se(!hostname_is_valid("..", false));
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assert_se(!hostname_is_valid("foobar.", false));
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assert_se(!hostname_is_valid(".foobar", false));
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assert_se(!hostname_is_valid("foo..bar", false));
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assert_se(!hostname_is_valid("foo.bar..", false));
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assert_se(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", false));
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assert_se(!hostname_is_valid("au-xph5-rvgrdsb5hcxc-47et3a5vvkrc-server-wyoz4elpdpe3.openstack.local", false));
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assert_se(hostname_is_valid("foobar", true));
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assert_se(hostname_is_valid("foobar.com", true));
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assert_se(hostname_is_valid("foobar.com.", true));
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assert_se(hostname_is_valid("fooBAR", true));
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assert_se(hostname_is_valid("fooBAR.com", true));
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assert_se(!hostname_is_valid("fooBAR.", true));
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assert_se(hostname_is_valid("fooBAR.com.", true));
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assert_se(!hostname_is_valid("fööbar", true));
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assert_se(!hostname_is_valid("", true));
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assert_se(!hostname_is_valid(".", true));
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assert_se(!hostname_is_valid("..", true));
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assert_se(!hostname_is_valid("foobar.", true));
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assert_se(!hostname_is_valid(".foobar", true));
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assert_se(!hostname_is_valid("foo..bar", true));
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assert_se(!hostname_is_valid("foo.bar..", true));
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assert_se(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", true));
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}
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static void test_hostname_cleanup(void) {
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char *s;
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s = strdupa("foobar");
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assert_se(streq(hostname_cleanup(s), "foobar"));
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s = strdupa("foobar.com");
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assert_se(streq(hostname_cleanup(s), "foobar.com"));
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s = strdupa("foobar.com.");
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assert_se(streq(hostname_cleanup(s), "foobar.com"));
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s = strdupa("foo-bar.-com-.");
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assert_se(streq(hostname_cleanup(s), "foo-bar.com"));
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s = strdupa("foo-bar-.-com-.");
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assert_se(streq(hostname_cleanup(s), "foo-bar--com"));
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s = strdupa("--foo-bar.-com");
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assert_se(streq(hostname_cleanup(s), "foo-bar.com"));
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s = strdupa("fooBAR");
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assert_se(streq(hostname_cleanup(s), "fooBAR"));
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s = strdupa("fooBAR.com");
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assert_se(streq(hostname_cleanup(s), "fooBAR.com"));
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s = strdupa("fooBAR.");
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assert_se(streq(hostname_cleanup(s), "fooBAR"));
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s = strdupa("fooBAR.com.");
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assert_se(streq(hostname_cleanup(s), "fooBAR.com"));
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s = strdupa("fööbar");
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assert_se(streq(hostname_cleanup(s), "fbar"));
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s = strdupa("");
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assert_se(isempty(hostname_cleanup(s)));
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s = strdupa(".");
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assert_se(isempty(hostname_cleanup(s)));
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s = strdupa("..");
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assert_se(isempty(hostname_cleanup(s)));
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s = strdupa("foobar.");
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assert_se(streq(hostname_cleanup(s), "foobar"));
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s = strdupa(".foobar");
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assert_se(streq(hostname_cleanup(s), "foobar"));
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s = strdupa("foo..bar");
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assert_se(streq(hostname_cleanup(s), "foo.bar"));
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s = strdupa("foo.bar..");
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assert_se(streq(hostname_cleanup(s), "foo.bar"));
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s = strdupa("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
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assert_se(streq(hostname_cleanup(s), "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"));
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s = strdupa("xxxx........xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
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assert_se(streq(hostname_cleanup(s), "xxxx.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"));
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}
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static void test_read_etc_hostname(void) {
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char path[] = "/tmp/hostname.XXXXXX";
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char *hostname;
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int fd;
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fd = mkostemp_safe(path);
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assert(fd > 0);
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close(fd);
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/* simple hostname */
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assert_se(write_string_file(path, "foo", WRITE_STRING_FILE_CREATE) == 0);
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assert_se(read_etc_hostname(path, &hostname) == 0);
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assert_se(streq(hostname, "foo"));
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hostname = mfree(hostname);
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/* with comment */
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assert_se(write_string_file(path, "# comment\nfoo", WRITE_STRING_FILE_CREATE) == 0);
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assert_se(read_etc_hostname(path, &hostname) == 0);
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assert_se(hostname);
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assert_se(streq(hostname, "foo"));
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hostname = mfree(hostname);
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/* with comment and extra whitespace */
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assert_se(write_string_file(path, "# comment\n\n foo ", WRITE_STRING_FILE_CREATE) == 0);
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assert_se(read_etc_hostname(path, &hostname) == 0);
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assert_se(hostname);
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assert_se(streq(hostname, "foo"));
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hostname = mfree(hostname);
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/* cleans up name */
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assert_se(write_string_file(path, "!foo/bar.com", WRITE_STRING_FILE_CREATE) == 0);
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assert_se(read_etc_hostname(path, &hostname) == 0);
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assert_se(hostname);
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assert_se(streq(hostname, "foobar.com"));
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hostname = mfree(hostname);
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/* no value set */
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hostname = (char*) 0x1234;
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assert_se(write_string_file(path, "# nothing here\n", WRITE_STRING_FILE_CREATE) == 0);
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assert_se(read_etc_hostname(path, &hostname) == -ENOENT);
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assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
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/* nonexisting file */
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assert_se(read_etc_hostname("/non/existing", &hostname) == -ENOENT);
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assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
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unlink(path);
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}
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static void test_hostname_malloc(void) {
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_cleanup_free_ char *h = NULL, *l = NULL;
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assert_se(h = gethostname_malloc());
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log_info("hostname_malloc: \"%s\"", h);
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assert_se(l = gethostname_short_malloc());
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log_info("hostname_short_malloc: \"%s\"", l);
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}
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static void test_fallback_hostname(void) {
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if (!hostname_is_valid(FALLBACK_HOSTNAME, false)) {
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log_error("Configured fallback hostname \"%s\" is not valid.", FALLBACK_HOSTNAME);
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exit(EXIT_FAILURE);
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}
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}
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int main(int argc, char *argv[]) {
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log_parse_environment();
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log_open();
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test_hostname_is_valid();
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test_hostname_cleanup();
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test_read_etc_hostname();
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test_hostname_malloc();
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test_fallback_hostname();
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return 0;
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}
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