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