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/* 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 "tests.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 deny.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, "deny.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) {
test_setup_logging(LOG_DEBUG);
if (argc == 1) {
test_parse_etc_hosts_system();
test_parse_etc_hosts();
} else
test_parse_file(argv[1]);
return 0;
}
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