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Diffstat (limited to '')
| -rw-r--r-- | src/resolve/test-resolved-etc-hosts.c | 150 |
1 files changed, 150 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..045952e --- /dev/null +++ b/src/resolve/test-resolved-etc-hosts.c @@ -0,0 +1,150 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#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; +} |