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#include "config.h"
#include <pthread.h>
#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <cmocka.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#define NSS_WRAPPER_HOSTNAME_ENV "NSS_WRAPPER_HOSTNAME"
static void test_nwrap_gethostname(void **state)
{
const char *hostname = "milliways";
char sys_host[256] = {0};
char host[16] = {0};
int rc;
(void) state; /* unused */
rc = setenv(NSS_WRAPPER_HOSTNAME_ENV, hostname, 1);
assert_int_equal(rc, 0);
rc = gethostname(host, sizeof(host));
assert_int_equal(rc, 0);
assert_string_equal(host, hostname);
rc = setenv(NSS_WRAPPER_HOSTNAME_ENV, "this_hostname_is_too_long", 1);
assert_int_equal(rc, 0);
rc = gethostname(host, sizeof(host));
assert_int_equal(rc, -1);
assert_int_equal(errno, ENAMETOOLONG);
unsetenv(NSS_WRAPPER_HOSTNAME_ENV);
rc = gethostname(sys_host, sizeof(sys_host));
assert_int_equal(rc, 0);
}
static void *thread_test_gethostbyname(void *u)
{
struct hostent *he;
(void) u; /* unused */
he = gethostbyname("magrathea");
assert_non_null(he);
assert_non_null(he->h_name);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
pthread_exit(NULL);
}
static void test_nwrap_gethostbyname_thread(void **state)
{
struct hostent *he;
pthread_t th;
(void) state; /* unused */
he = gethostbyname("maximegalon.galaxy.site");
assert_non_null(he);
assert_non_null(he->h_name);
assert_string_equal(he->h_name, "maximegalon.galaxy.site");
pthread_create(&th, NULL, &thread_test_gethostbyname, NULL);
pthread_join(th, NULL);
assert_non_null(he);
assert_non_null(he->h_name);
#ifdef BSD
/*
* On *BSD (and Mac OS X) systems,
* data is stored in thread local storage.
*/
assert_string_equal(he->h_name, "maximegalon.galaxy.site");
#else
/*
* Glibc doesn't store data in thread local storage, so calling
* gethostbyname from a thread overwrites the parent thread's data.
*/
assert_string_equal(he->h_name, "magrathea.galaxy.site");
#endif
}
static void test_nwrap_gethostbyname(void **state)
{
char ip[INET_ADDRSTRLEN];
struct hostent *he;
const char *a;
(void) state; /* unused */
he = gethostbyname("magrathea.galaxy.site");
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET);
a = inet_ntop(AF_INET, he->h_addr_list[0], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(ip, "127.0.0.11");
}
static void test_nwrap_gethostbyname_multiple(void **state)
{
struct hostent *he;
char **list;
/* For inet_ntop call */
char buf[4096];
const char *result;
char *p = buf;
/* List of ips in hosts file - order matters */
const char *const result_ips[] = { "127.0.0.11", "127.0.0.12", NULL };
const char *actual_ip = result_ips[0];
unsigned int ac;
(void) state; /* unused */
he = gethostbyname("magrathea.galaxy.site");
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
list = he->h_addr_list;
for (ac = 0; *list != NULL; ++ac, ++list) {
actual_ip = result_ips[ac];
/* When test fails here more records are returned */
assert_non_null(actual_ip);
result = inet_ntop(AF_INET, *list, p, 4096);
assert_non_null(p);
assert_string_equal(actual_ip, result);
}
}
#ifdef HAVE_GETHOSTBYNAME2
static void test_nwrap_gethostbyname2(void **state)
{
char ip[INET6_ADDRSTRLEN];
struct hostent *he;
const char *a;
(void) state; /* unused */
he = gethostbyname2("magrathea.galaxy.site", AF_INET6);
assert_non_null(he);
he = gethostbyname2("magrathea.galaxy.site", AF_INET);
assert_non_null(he);
/* Check ipv6 he */
he = gethostbyname2("krikkit.galaxy.site", AF_INET6);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "krikkit.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET6);
a = inet_ntop(AF_INET6, he->h_addr_list[0], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(ip, "::14");
/* Check ipv4 he */
he = gethostbyname2("krikkit.galaxy.site", AF_INET);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "krikkit.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET);
a = inet_ntop(AF_INET, he->h_addr_list[0], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(ip, "127.0.0.14");
}
#endif /* HAVE_GETHOSTBYNAME2 */
static void test_nwrap_gethostbyaddr(void **state)
{
struct hostent *he;
struct in_addr in;
int rc;
(void) state; /* unused */
rc = inet_aton("127.0.0.11", &in);
assert_int_equal(rc, 1);
he = gethostbyaddr(&in, sizeof(struct in_addr), AF_INET);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET);
assert_memory_equal(&in, he->h_addr_list[0], he->h_length);
}
#ifdef HAVE_GETHOSTBYNAME_R
static void test_nwrap_gethostbyname_r(void **state)
{
char buf[1024] = {0};
char ip[INET_ADDRSTRLEN];
struct hostent hb, *he;
const char *a;
int herr = 0;
int rc;
(void) state; /* unused */
rc = gethostbyname_r("magrathea.galaxy.site",
&hb,
buf, sizeof(buf),
&he,
&herr);
assert_int_equal(rc, 0);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET);
a = inet_ntop(AF_INET, he->h_addr_list[0], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(ip, "127.0.0.11");
}
static void test_nwrap_gethostbyname_r_null(void **state)
{
char buf[2];
struct hostent hb, *he;
int herr = 0;
int rc;
(void) state; /* unused */
buf[0] = 'A';
buf[1] = '\0';
/* Check that the returned buffer is zeroed */
rc = gethostbyname_r("wurst",
&hb,
buf, sizeof(buf),
&he,
&herr);
assert_int_equal(rc, ENOENT);
assert_null(he);
assert_null(hb.h_name);
assert_null(hb.h_addr_list);
assert_string_equal(buf, "");
}
#endif
#ifdef HAVE_GETHOSTBYNAME2_R
static void test_nwrap_gethostbyname2_r_v4(void **state)
{
char *buf = NULL;
size_t buflen = 2;
char ip[INET_ADDRSTRLEN];
struct hostent hb, *he;
const char *a;
int herr = 0;
int rc;
(void) state; /* unused */
for (rc = ERANGE, buflen = 2; rc == ERANGE; buflen *= 2) {
if (buf != NULL) {
free(buf);
}
buf = calloc(1, buflen);
assert_non_null(buf);
rc = gethostbyname2_r("magrathea.galaxy.site", AF_INET,
&hb,
buf, buflen,
&he,
&herr);
}
assert_int_equal(rc, 0);
assert_int_equal(herr, 0);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET);
assert_non_null(he->h_addr_list[0]);
a = inet_ntop(AF_INET, he->h_addr_list[0], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(a, "127.0.0.11");
assert_non_null(he->h_addr_list[1]);
a = inet_ntop(AF_INET, he->h_addr_list[1], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(a, "127.0.0.12");
assert_null(he->h_addr_list[2]);
free(buf);
}
static void test_nwrap_gethostbyname2_r_v6(void **state)
{
char *buf = NULL;
size_t buflen = 2;
char ip[INET6_ADDRSTRLEN];
struct hostent hb, *he;
const char *a;
int herr = 0;
int rc;
(void) state; /* unused */
for (rc = ERANGE, buflen = 2; rc == ERANGE; buflen *= 2) {
if (buf != NULL) {
free(buf);
}
buf = calloc(1, buflen);
assert_non_null(buf);
rc = gethostbyname2_r("magrathea.galaxy.site", AF_INET6,
&hb,
buf, buflen,
&he,
&herr);
}
assert_int_equal(rc, 0);
assert_int_equal(herr, 0);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET6);
assert_non_null(he->h_addr_list[0]);
a = inet_ntop(AF_INET6, he->h_addr_list[0], ip, sizeof(ip));
assert_non_null(a);
assert_string_equal(a, "::29a");
assert_null(he->h_addr_list[1]);
free(buf);
}
#endif
#ifdef HAVE_GETHOSTBYADDR_R
static void test_nwrap_gethostbyaddr_r(void **state)
{
char buf[1024] = {0};
struct hostent hb, *he;
struct in_addr in;
int herr = 0;
int rc;
(void) state; /* unused */
rc = inet_aton("127.0.0.11", &in);
assert_int_equal(rc, 1);
rc = gethostbyaddr_r(&in, sizeof(struct in_addr),
AF_INET,
&hb,
buf, sizeof(buf),
&he,
&herr);
assert_int_equal(rc, 0);
assert_non_null(he);
assert_non_null(he->h_name);
assert_non_null(he->h_addr_list);
assert_string_equal(he->h_name, "magrathea.galaxy.site");
assert_int_equal(he->h_addrtype, AF_INET);
assert_memory_equal(&in, he->h_addr_list[0], he->h_length);
}
#endif
int main(void) {
int rc;
const struct CMUnitTest tests[] = {
cmocka_unit_test(test_nwrap_gethostname),
cmocka_unit_test(test_nwrap_gethostbyname),
cmocka_unit_test(test_nwrap_gethostbyname_thread),
#ifdef HAVE_GETHOSTBYNAME2
cmocka_unit_test(test_nwrap_gethostbyname2),
#endif
cmocka_unit_test(test_nwrap_gethostbyaddr),
#ifdef HAVE_GETHOSTBYNAME_R
cmocka_unit_test(test_nwrap_gethostbyname_r),
cmocka_unit_test(test_nwrap_gethostbyname_r_null),
#endif
#ifdef HAVE_GETHOSTBYNAME2_R
cmocka_unit_test(test_nwrap_gethostbyname2_r_v4),
cmocka_unit_test(test_nwrap_gethostbyname2_r_v6),
#endif
#ifdef HAVE_GETHOSTBYADDR_R
cmocka_unit_test(test_nwrap_gethostbyaddr_r),
#endif
cmocka_unit_test(test_nwrap_gethostbyname_multiple),
};
rc = cmocka_run_group_tests(tests, NULL, NULL);
return rc;
}
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