Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 151 insertions, 0 deletions

diff --git a/src/resolve/test-resolved-etc-hosts.c b/src/resolve/test-resolved-etc-hosts.c
new file mode 100644
index 0000000..dbff889
--- /dev/null
+++ b/src/resolve/test-resolved-etc-hosts.c
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "log.h"
+#include "resolved-etc-hosts.h"
+#include "strv.h"
+#include "tmpfile-util.h"
+
+static void test_parse_etc_hosts_system(void) {
+        _cleanup_fclose_ FILE *f = NULL;
+
+        log_info("/* %s */", __func__);
+
+        f = fopen("/etc/hosts", "re");
+        if (!f) {
+                assert_se(errno == ENOENT);
+                return;
+        }
+
+        _cleanup_(etc_hosts_free) EtcHosts hosts = {};
+        assert_se(etc_hosts_parse(&hosts, f) == 0);
+}
+
+#define address_equal_4(_addr, _address)                                \
+        ((_addr)->family == AF_INET &&                                  \
+         !memcmp(&(_addr)->address.in, &(struct in_addr) { .s_addr = (_address) }, 4))
+
+#define address_equal_6(_addr, ...)                                     \
+        ((_addr)->family == AF_INET6 &&                                 \
+         !memcmp(&(_addr)->address.in6, &(struct in6_addr) { .s6_addr = __VA_ARGS__}, 16) )
+
+static void test_parse_etc_hosts(void) {
+        _cleanup_(unlink_tempfilep) char
+                t[] = "/tmp/test-resolved-etc-hosts.XXXXXX";
+
+        log_info("/* %s */", __func__);
+
+        int fd;
+        _cleanup_fclose_ FILE *f;
+        const char *s;
+
+        fd = mkostemp_safe(t);
+        assert_se(fd >= 0);
+
+        f = fdopen(fd, "r+");
+        assert_se(f);
+        fputs("1.2.3.4 some.where\n"
+              "1.2.3.5 some.where\n"
+              "1.2.3.6 dash dash-dash.where-dash\n"
+              "1.2.3.7 bad-dash- -bad-dash -bad-dash.bad-\n"
+              "1.2.3.8\n"
+              "1.2.3.9 before.comment # within.comment\n"
+              "1.2.3.10 before.comment#within.comment2\n"
+              "1.2.3.11 before.comment# within.comment3\n"
+              "1.2.3.12 before.comment#\n"
+              "1.2.3 short.address\n"
+              "1.2.3.4.5 long.address\n"
+              "1::2::3 multi.colon\n"
+
+              "::0 some.where some.other\n"
+              "0.0.0.0 black.listed\n"
+              "::5\t\t\t \tsome.where\tsome.other foobar.foo.foo\t\t\t\n"
+              "        \n", f);
+        assert_se(fflush_and_check(f) >= 0);
+        rewind(f);
+
+        _cleanup_(etc_hosts_free) EtcHosts hosts = {};
+        assert_se(etc_hosts_parse(&hosts, f) == 0);
+
+        EtcHostsItemByName *bn;
+        assert_se(bn = hashmap_get(hosts.by_name, "some.where"));
+        assert_se(bn->n_addresses == 3);
+        assert_se(bn->n_allocated >= 3);
+        assert_se(address_equal_4(bn->addresses[0], inet_addr("1.2.3.4")));
+        assert_se(address_equal_4(bn->addresses[1], inet_addr("1.2.3.5")));
+        assert_se(address_equal_6(bn->addresses[2], {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5}));
+
+        assert_se(bn = hashmap_get(hosts.by_name, "dash"));
+        assert_se(bn->n_addresses == 1);
+        assert_se(bn->n_allocated >= 1);
+        assert_se(address_equal_4(bn->addresses[0], inet_addr("1.2.3.6")));
+
+        assert_se(bn = hashmap_get(hosts.by_name, "dash-dash.where-dash"));
+        assert_se(bn->n_addresses == 1);
+        assert_se(bn->n_allocated >= 1);
+        assert_se(address_equal_4(bn->addresses[0], inet_addr("1.2.3.6")));
+
+        /* See https://tools.ietf.org/html/rfc1035#section-2.3.1 */
+        FOREACH_STRING(s, "bad-dash-", "-bad-dash", "-bad-dash.bad-")
+                assert_se(!hashmap_get(hosts.by_name, s));
+
+        assert_se(bn = hashmap_get(hosts.by_name, "before.comment"));
+        assert_se(bn->n_addresses == 4);
+        assert_se(bn->n_allocated >= 4);
+        assert_se(address_equal_4(bn->addresses[0], inet_addr("1.2.3.9")));
+        assert_se(address_equal_4(bn->addresses[1], inet_addr("1.2.3.10")));
+        assert_se(address_equal_4(bn->addresses[2], inet_addr("1.2.3.11")));
+        assert_se(address_equal_4(bn->addresses[3], inet_addr("1.2.3.12")));
+
+        assert(!hashmap_get(hosts.by_name, "within.comment"));
+        assert(!hashmap_get(hosts.by_name, "within.comment2"));
+        assert(!hashmap_get(hosts.by_name, "within.comment3"));
+        assert(!hashmap_get(hosts.by_name, "#"));
+
+        assert(!hashmap_get(hosts.by_name, "short.address"));
+        assert(!hashmap_get(hosts.by_name, "long.address"));
+        assert(!hashmap_get(hosts.by_name, "multi.colon"));
+        assert_se(!set_contains(hosts.no_address, "short.address"));
+        assert_se(!set_contains(hosts.no_address, "long.address"));
+        assert_se(!set_contains(hosts.no_address, "multi.colon"));
+
+        assert_se(bn = hashmap_get(hosts.by_name, "some.other"));
+        assert_se(bn->n_addresses == 1);
+        assert_se(bn->n_allocated >= 1);
+        assert_se(address_equal_6(bn->addresses[0], {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5}));
+
+        assert_se( set_contains(hosts.no_address, "some.where"));
+        assert_se( set_contains(hosts.no_address, "some.other"));
+        assert_se( set_contains(hosts.no_address, "black.listed"));
+        assert_se(!set_contains(hosts.no_address, "foobar.foo.foo"));
+}
+
+static void test_parse_file(const char *fname) {
+        _cleanup_(etc_hosts_free) EtcHosts hosts = {};
+        _cleanup_fclose_ FILE *f;
+
+        log_info("/* %s(\"%s\") */", __func__, fname);
+
+        assert_se(f = fopen(fname, "re"));
+        assert_se(etc_hosts_parse(&hosts, f) == 0);
+}
+
+int main(int argc, char **argv) {
+        log_set_max_level(LOG_DEBUG);
+        log_parse_environment();
+        log_open();
+
+        if (argc == 1) {
+                test_parse_etc_hosts_system();
+                test_parse_etc_hosts();
+        } else
+                test_parse_file(argv[1]);
+
+        return 0;
+}