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-rw-r--r--.gitignore1
-rw-r--r--Makefile.am7
-rw-r--r--src/basic/hostname-util.c15
-rw-r--r--src/basic/hostname-util.h2
-rw-r--r--src/basic/util.c2
-rw-r--r--src/basic/util.h5
-rw-r--r--src/firstboot/firstboot.c8
-rw-r--r--src/hostname/hostnamed.c4
-rw-r--r--src/import/pull-dkr.c2
-rw-r--r--src/libsystemd-network/sd-dhcp-lease.c5
-rw-r--r--src/locale/localed.c5
-rw-r--r--src/network/networkd-network.c2
-rw-r--r--src/test/test-hostname-util.c163
-rw-r--r--src/test/test-util.c69
14 files changed, 199 insertions, 91 deletions
diff --git a/.gitignore b/.gitignore
index 7659e7a645..a66c7e1775 100644
--- a/.gitignore
+++ b/.gitignore
@@ -197,6 +197,7 @@
/test-firewall-util
/test-hashmap
/test-hostname
+/test-hostname-util
/test-icmp6-rs
/test-id128
/test-inhibit
diff --git a/Makefile.am b/Makefile.am
index d21982285f..4f97da10c2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1393,6 +1393,7 @@ tests += \
test-utf8 \
test-ellipsize \
test-util \
+ test-hostname-util \
test-process-util \
test-terminal-util \
test-path-lookup \
@@ -1671,6 +1672,12 @@ test_util_SOURCES = \
test_util_LDADD = \
libshared.la
+test_hostname_util_SOURCES = \
+ src/test/test-hostname-util.c
+
+test_hostname_util_LDADD = \
+ libshared.la
+
test_process_util_SOURCES = \
src/test/test-process-util.c
diff --git a/src/basic/hostname-util.c b/src/basic/hostname-util.c
index e336f269fa..21fae89fd0 100644
--- a/src/basic/hostname-util.c
+++ b/src/basic/hostname-util.c
@@ -61,14 +61,22 @@ static bool hostname_valid_char(char c) {
c == '.';
}
-bool hostname_is_valid(const char *s) {
+/**
+ * Check if s looks like a valid host name or fqdn. This does not do
+ * full DNS validation, but only checks if the name is composed of
+ * allowed characters and the length is not above the maximum allowed
+ * by Linux (c.f. dns_name_is_valid()). Trailing dot is allowed if
+ * relax is true and at least two components are present in the name.
+ */
+bool hostname_is_valid(const char *s, bool relax) {
const char *p;
bool dot;
+ unsigned dots = 0;
if (isempty(s))
return false;
- /* Doesn't accept empty hostnames, hostnames with trailing or
+ /* Doesn't accept empty hostnames, hostnames with
* leading dots, and hostnames with multiple dots in a
* sequence. Also ensures that the length stays below
* HOST_NAME_MAX. */
@@ -79,6 +87,7 @@ bool hostname_is_valid(const char *s) {
return false;
dot = true;
+ dots ++;
} else {
if (!hostname_valid_char(*p))
return false;
@@ -87,7 +96,7 @@ bool hostname_is_valid(const char *s) {
}
}
- if (dot)
+ if (dot && (dots < 2 || !relax))
return false;
if (p-s > HOST_NAME_MAX)
diff --git a/src/basic/hostname-util.h b/src/basic/hostname-util.h
index 0c4763cf5a..ecae3a267c 100644
--- a/src/basic/hostname-util.h
+++ b/src/basic/hostname-util.h
@@ -29,7 +29,7 @@ bool hostname_is_set(void);
char* gethostname_malloc(void);
-bool hostname_is_valid(const char *s) _pure_;
+bool hostname_is_valid(const char *s, bool relax) _pure_;
char* hostname_cleanup(char *s, bool lowercase);
bool is_localhost(const char *hostname);
diff --git a/src/basic/util.c b/src/basic/util.c
index 7896be8788..f81bf4e31e 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -2997,7 +2997,7 @@ char* strshorten(char *s, size_t l) {
bool machine_name_is_valid(const char *s) {
- if (!hostname_is_valid(s))
+ if (!hostname_is_valid(s, false))
return false;
/* Machine names should be useful hostnames, but also be
diff --git a/src/basic/util.h b/src/basic/util.h
index c2e5cc610b..5c0130d265 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -858,6 +858,11 @@ int unquote_first_word(const char **p, char **ret, UnquoteFlags flags);
int unquote_first_word_and_warn(const char **p, char **ret, UnquoteFlags flags, const char *unit, const char *filename, unsigned line, const char *rvalue);
int unquote_many_words(const char **p, UnquoteFlags flags, ...) _sentinel_;
+static inline void free_and_replace(char **s, char *v) {
+ free(*s);
+ *s = v;
+}
+
int free_and_strdup(char **p, const char *s);
#define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)
diff --git a/src/firstboot/firstboot.c b/src/firstboot/firstboot.c
index 3805b29437..43669d28bf 100644
--- a/src/firstboot/firstboot.c
+++ b/src/firstboot/firstboot.c
@@ -386,7 +386,7 @@ static int prompt_hostname(void) {
break;
}
- if (!hostname_is_valid(h)) {
+ if (!hostname_is_valid(h, false)) {
log_error("Specified hostname invalid.");
continue;
}
@@ -780,14 +780,12 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_HOSTNAME:
- if (!hostname_is_valid(optarg)) {
+ if (!hostname_is_valid(optarg, false)) {
log_error("Host name %s is not valid.", optarg);
return -EINVAL;
}
- free(arg_hostname);
- arg_hostname = strdup(optarg);
- if (!arg_hostname)
+ if (free_and_strdup(&arg_hostname, optarg) < 0)
return log_oom();
break;
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);
diff --git a/src/import/pull-dkr.c b/src/import/pull-dkr.c
index 67ca1ce8e4..53d5174f33 100644
--- a/src/import/pull-dkr.c
+++ b/src/import/pull-dkr.c
@@ -721,7 +721,7 @@ static int dkr_pull_job_on_header(PullJob *j, const char *header, size_t sz) {
return log_oom();
STRV_FOREACH(k, l) {
- if (!hostname_is_valid(*k)) {
+ if (!hostname_is_valid(*k, false)) {
log_error("Registry hostname is not valid.");
strv_free(l);
return -EBADMSG;
diff --git a/src/libsystemd-network/sd-dhcp-lease.c b/src/libsystemd-network/sd-dhcp-lease.c
index 54417b3af3..43f7566f65 100644
--- a/src/libsystemd-network/sd-dhcp-lease.c
+++ b/src/libsystemd-network/sd-dhcp-lease.c
@@ -553,11 +553,10 @@ int dhcp_lease_parse_options(uint8_t code, uint8_t len, const uint8_t *option,
if (e)
*e = 0;
- if (!hostname_is_valid(hostname) || is_localhost(hostname))
+ if (!hostname_is_valid(hostname, false) || is_localhost(hostname))
break;
- free(lease->hostname);
- lease->hostname = hostname;
+ free_and_replace(&lease->hostname, hostname);
hostname = NULL;
break;
diff --git a/src/locale/localed.c b/src/locale/localed.c
index 88756542fd..3b511bfaf4 100644
--- a/src/locale/localed.c
+++ b/src/locale/localed.c
@@ -99,11 +99,6 @@ static const char* nonempty(const char *s) {
return isempty(s) ? NULL : s;
}
-static void free_and_replace(char **s, char *v) {
- free(*s);
- *s = v;
-}
-
static bool startswith_comma(const char *s, const char *prefix) {
const char *t;
diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index d8f42621af..e3ac70ff33 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -838,7 +838,7 @@ int config_parse_hostname(const char *unit,
if (r < 0)
return r;
- if (!hostname_is_valid(hn)) {
+ if (!hostname_is_valid(hn, false)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL, "hostname is not valid, ignoring assignment: %s", rvalue);
free(hn);
diff --git a/src/test/test-hostname-util.c b/src/test/test-hostname-util.c
new file mode 100644
index 0000000000..2357ab5758
--- /dev/null
+++ b/src/test/test-hostname-util.c
@@ -0,0 +1,163 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+ Copyright 2013 Thomas H.P. Andersen
+ Copyright 2015 Zbigniew Jędrzejewski-Szmek
+
+ 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 "util.h"
+#include "fileio.h"
+#include "hostname-util.h"
+
+static void test_hostname_is_valid(void) {
+ assert_se(hostname_is_valid("foobar", false));
+ assert_se(hostname_is_valid("foobar.com", false));
+ assert_se(!hostname_is_valid("foobar.com.", false));
+ assert_se(hostname_is_valid("fooBAR", false));
+ assert_se(hostname_is_valid("fooBAR.com", false));
+ assert_se(!hostname_is_valid("fooBAR.", false));
+ assert_se(!hostname_is_valid("fooBAR.com.", false));
+ assert_se(!hostname_is_valid("fööbar", false));
+ assert_se(!hostname_is_valid("", false));
+ assert_se(!hostname_is_valid(".", false));
+ assert_se(!hostname_is_valid("..", false));
+ assert_se(!hostname_is_valid("foobar.", false));
+ assert_se(!hostname_is_valid(".foobar", false));
+ assert_se(!hostname_is_valid("foo..bar", false));
+ assert_se(!hostname_is_valid("foo.bar..", false));
+ assert_se(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", false));
+
+ assert_se(hostname_is_valid("foobar", true));
+ assert_se(hostname_is_valid("foobar.com", true));
+ assert_se(hostname_is_valid("foobar.com.", true));
+ assert_se(hostname_is_valid("fooBAR", true));
+ assert_se(hostname_is_valid("fooBAR.com", true));
+ assert_se(!hostname_is_valid("fooBAR.", true));
+ assert_se(hostname_is_valid("fooBAR.com.", true));
+ assert_se(!hostname_is_valid("fööbar", true));
+ assert_se(!hostname_is_valid("", true));
+ assert_se(!hostname_is_valid(".", true));
+ assert_se(!hostname_is_valid("..", true));
+ assert_se(!hostname_is_valid("foobar.", true));
+ assert_se(!hostname_is_valid(".foobar", true));
+ assert_se(!hostname_is_valid("foo..bar", true));
+ assert_se(!hostname_is_valid("foo.bar..", true));
+ assert_se(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", true));
+}
+
+static void test_hostname_cleanup(void) {
+ char *s;
+
+ s = strdupa("foobar");
+ assert_se(streq(hostname_cleanup(s, false), "foobar"));
+ s = strdupa("foobar.com");
+ assert_se(streq(hostname_cleanup(s, false), "foobar.com"));
+ s = strdupa("foobar.com.");
+ assert_se(streq(hostname_cleanup(s, false), "foobar.com"));
+ s = strdupa("fooBAR");
+ assert_se(streq(hostname_cleanup(s, false), "fooBAR"));
+ s = strdupa("fooBAR.com");
+ assert_se(streq(hostname_cleanup(s, false), "fooBAR.com"));
+ s = strdupa("fooBAR.");
+ assert_se(streq(hostname_cleanup(s, false), "fooBAR"));
+ s = strdupa("fooBAR.com.");
+ assert_se(streq(hostname_cleanup(s, false), "fooBAR.com"));
+ s = strdupa("fööbar");
+ assert_se(streq(hostname_cleanup(s, false), "fbar"));
+ s = strdupa("");
+ assert_se(isempty(hostname_cleanup(s, false)));
+ s = strdupa(".");
+ assert_se(isempty(hostname_cleanup(s, false)));
+ s = strdupa("..");
+ assert_se(isempty(hostname_cleanup(s, false)));
+ s = strdupa("foobar.");
+ assert_se(streq(hostname_cleanup(s, false), "foobar"));
+ s = strdupa(".foobar");
+ assert_se(streq(hostname_cleanup(s, false), "foobar"));
+ s = strdupa("foo..bar");
+ assert_se(streq(hostname_cleanup(s, false), "foo.bar"));
+ s = strdupa("foo.bar..");
+ assert_se(streq(hostname_cleanup(s, false), "foo.bar"));
+ s = strdupa("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
+ assert_se(streq(hostname_cleanup(s, false), "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"));
+}
+
+static void test_read_hostname_config(void) {
+ char path[] = "/tmp/hostname.XXXXXX";
+ char *hostname;
+ int fd;
+
+ fd = mkostemp_safe(path, O_RDWR|O_CLOEXEC);
+ assert(fd > 0);
+ close(fd);
+
+ /* simple hostname */
+ write_string_file(path, "foo", WRITE_STRING_FILE_CREATE);
+ assert_se(read_hostname_config(path, &hostname) == 0);
+ assert_se(streq(hostname, "foo"));
+ free(hostname);
+ hostname = NULL;
+
+ /* with comment */
+ write_string_file(path, "# comment\nfoo", WRITE_STRING_FILE_CREATE);
+ assert_se(read_hostname_config(path, &hostname) == 0);
+ assert_se(hostname);
+ assert_se(streq(hostname, "foo"));
+ free(hostname);
+ hostname = NULL;
+
+ /* with comment and extra whitespace */
+ write_string_file(path, "# comment\n\n foo ", WRITE_STRING_FILE_CREATE);
+ assert_se(read_hostname_config(path, &hostname) == 0);
+ assert_se(hostname);
+ assert_se(streq(hostname, "foo"));
+ free(hostname);
+ hostname = NULL;
+
+ /* cleans up name */
+ write_string_file(path, "!foo/bar.com", WRITE_STRING_FILE_CREATE);
+ assert_se(read_hostname_config(path, &hostname) == 0);
+ assert_se(hostname);
+ assert_se(streq(hostname, "foobar.com"));
+ free(hostname);
+ hostname = NULL;
+
+ /* no value set */
+ hostname = (char*) 0x1234;
+ write_string_file(path, "# nothing here\n", WRITE_STRING_FILE_CREATE);
+ assert_se(read_hostname_config(path, &hostname) == -ENOENT);
+ assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
+
+ /* nonexisting file */
+ assert_se(read_hostname_config("/non/existing", &hostname) == -ENOENT);
+ assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
+
+ unlink(path);
+}
+
+int main(int argc, char *argv[]) {
+ log_parse_environment();
+ log_open();
+
+ test_hostname_is_valid();
+ test_hostname_cleanup();
+ test_read_hostname_config();
+
+ return 0;
+}
diff --git a/src/test/test-util.c b/src/test/test-util.c
index f43433baa1..9ad912d20f 100644
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -38,7 +38,6 @@
#include "conf-parser.h"
#include "virt.h"
#include "process-util.h"
-#include "hostname-util.h"
#include "signal-util.h"
static void test_streq_ptr(void) {
@@ -833,72 +832,6 @@ static void test_memdup_multiply(void) {
free(dup);
}
-static void test_hostname_is_valid(void) {
- assert_se(hostname_is_valid("foobar"));
- assert_se(hostname_is_valid("foobar.com"));
- assert_se(!hostname_is_valid("fööbar"));
- assert_se(!hostname_is_valid(""));
- assert_se(!hostname_is_valid("."));
- assert_se(!hostname_is_valid(".."));
- assert_se(!hostname_is_valid("foobar."));
- assert_se(!hostname_is_valid(".foobar"));
- assert_se(!hostname_is_valid("foo..bar"));
- assert_se(!hostname_is_valid("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"));
-}
-
-static void test_read_hostname_config(void) {
- char path[] = "/tmp/hostname.XXXXXX";
- char *hostname;
- int fd;
-
- fd = mkostemp_safe(path, O_RDWR|O_CLOEXEC);
- assert(fd > 0);
- close(fd);
-
- /* simple hostname */
- write_string_file(path, "foo", WRITE_STRING_FILE_CREATE);
- assert_se(read_hostname_config(path, &hostname) == 0);
- assert_se(streq(hostname, "foo"));
- free(hostname);
- hostname = NULL;
-
- /* with comment */
- write_string_file(path, "# comment\nfoo", WRITE_STRING_FILE_CREATE);
- assert_se(read_hostname_config(path, &hostname) == 0);
- assert_se(hostname);
- assert_se(streq(hostname, "foo"));
- free(hostname);
- hostname = NULL;
-
- /* with comment and extra whitespace */
- write_string_file(path, "# comment\n\n foo ", WRITE_STRING_FILE_CREATE);
- assert_se(read_hostname_config(path, &hostname) == 0);
- assert_se(hostname);
- assert_se(streq(hostname, "foo"));
- free(hostname);
- hostname = NULL;
-
- /* cleans up name */
- write_string_file(path, "!foo/bar.com", WRITE_STRING_FILE_CREATE);
- assert_se(read_hostname_config(path, &hostname) == 0);
- assert_se(hostname);
- assert_se(streq(hostname, "foobar.com"));
- free(hostname);
- hostname = NULL;
-
- /* no value set */
- hostname = (char*) 0x1234;
- write_string_file(path, "# nothing here\n", WRITE_STRING_FILE_CREATE);
- assert_se(read_hostname_config(path, &hostname) == -ENOENT);
- assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
-
- /* nonexisting file */
- assert_se(read_hostname_config("/non/existing", &hostname) == -ENOENT);
- assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
-
- unlink(path);
-}
-
static void test_u64log2(void) {
assert_se(u64log2(0) == 0);
assert_se(u64log2(8) == 3);
@@ -2124,8 +2057,6 @@ int main(int argc, char *argv[]) {
test_foreach_word();
test_foreach_word_quoted();
test_memdup_multiply();
- test_hostname_is_valid();
- test_read_hostname_config();
test_u64log2();
test_protect_errno();
test_parse_size();
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 06:38:54 +0000