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test-nss: allow the module and names/addresses to be specified (#4258)

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Useful for testing a single module. If nothing is specified, behaviour is the
same as before.

$ ./test-nss myhostname 192.168.0.14 localhost
======== myhostname ========
_nss_myhostname_gethostbyname4_r("localhost") → status=NSS_STATUS_SUCCESS
                   pat=buffer+0x38 errno=0/--- h_errno=0/Resolver Error 0 (no error) ttl=0
        "localhost" AF_INET 127.0.0.1 %lo
        "localhost" AF_INET6 ::1 %lo

_nss_myhostname_gethostbyname3_r("localhost", AF_INET) → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error) ttl=0
        "localhost"
        AF_INET 127.0.0.1
        canonical: "localhost"

_nss_myhostname_gethostbyname3_r("localhost", AF_INET6) → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error) ttl=0
        "localhost"
        AF_INET6 ::1
        canonical: "localhost"

_nss_myhostname_gethostbyname3_r("localhost", *) → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error) ttl=0
        "localhost"
        AF_INET 127.0.0.1
        canonical: "localhost"

_nss_myhostname_gethostbyname3_r("localhost", AF_UNIX) → status=NSS_STATUS_UNAVAIL
                   errno=97/EAFNOSUPPORT h_errno=4/No address associated with name ttl=2147483647

_nss_myhostname_gethostbyname2_r("localhost", AF_INET) → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error)
        "localhost"
        AF_INET 127.0.0.1

_nss_myhostname_gethostbyname2_r("localhost", AF_INET6) → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error)
        "localhost"
        AF_INET6 ::1

_nss_myhostname_gethostbyname2_r("localhost", *) → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error)
        "localhost"
        AF_INET 127.0.0.1

_nss_myhostname_gethostbyname2_r("localhost", AF_UNIX) → status=NSS_STATUS_UNAVAIL
                   errno=97/EAFNOSUPPORT h_errno=4/No address associated with name

_nss_myhostname_gethostbyname_r("localhost") → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error)
        "localhost"
        AF_INET 127.0.0.1

_nss_myhostname_gethostbyaddr2_r("192.168.0.14") → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error) ttl=0
        "laptop"
        AF_INET 192.168.0.14
        AF_INET 192.168.122.1
        AF_INET 169.254.209.76

_nss_myhostname_gethostbyaddr_r("192.168.0.14") → status=NSS_STATUS_SUCCESS
                   errno=0/--- h_errno=0/Resolver Error 0 (no error)
        "laptop"
        AF_INET 192.168.0.14
        AF_INET 192.168.122.1
        AF_INET 169.254.209.76
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2016-11-11 07:39:20 -05:00 committed by Lennart Poettering
parent d48bb46b5a
commit 9f7672b3bc
1 changed files with 137 additions and 53 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

190
src/test/test-nss.c
View file

@ -77,7 +77,8 @@ static void* open_handle(const char* dir, const char* module, int flags) {
path = strjoina("libnss_", module, ".so.2");
handle = dlopen(path, flags);
assert_se(handle);
if (!handle)
log_error("Failed to load module %s: %s", module, dlerror());
return handle;
}
@ -379,75 +380,158 @@ static void test_byaddr(void *handle,
puts("");
}
static int make_addresses(struct local_address **addresses) {
int n;
size_t n_alloc;
_cleanup_free_ struct local_address *addrs = NULL;
n = local_addresses(NULL, 0, AF_UNSPEC, &addrs);
if (n < 0)
log_info_errno(n, "Failed to query local addresses: %m");
n_alloc = n; /* we _can_ do that */
if (!GREEDY_REALLOC(addrs, n_alloc, n + 3))
return log_oom();
addrs[n++] = (struct local_address) { .family = AF_INET,
.address.in = { htobe32(0x7F000001) } };
addrs[n++] = (struct local_address) { .family = AF_INET,
.address.in = { htobe32(0x7F000002) } };
addrs[n++] = (struct local_address) { .family = AF_INET6,
.address.in6 = in6addr_loopback };
return 0;
}
static int test_one_module(const char* dir,
const char *module,
char **names,
struct local_address *addresses,
int n_addresses) {
void *handle;
char **name;
int i;
log_info("======== %s ========", module);
handle = open_handle(streq(module, "dns") ? NULL : dir,
module,
RTLD_LAZY|RTLD_NODELETE);
if (!handle)
return -EINVAL;
STRV_FOREACH(name, names)
test_byname(handle, module, *name);
for (i = 0; i < n_addresses; i++)
test_byaddr(handle, module,
&addresses[i].address,
FAMILY_ADDRESS_SIZE(addresses[i].family),
addresses[i].family);
log_info(" ");
dlclose(handle);
return 0;
}
static int parse_argv(int argc, char **argv,
char ***the_modules,
char ***the_names,
struct local_address **the_addresses, int *n_addresses) {
int r, n = 0;
_cleanup_strv_free_ char **modules = NULL, **names = NULL;
_cleanup_free_ struct local_address *addrs = NULL;
size_t n_allocated = 0;
if (argc > 1)
modules = strv_new(argv[1], NULL);
else
modules = strv_new(
#ifdef HAVE_MYHOSTNAME
# define MODULE1 "myhostname\0"
#else
# define MODULE1
"myhostname",
#endif
#ifdef HAVE_RESOLVED
# define MODULE2 "resolve\0"
#else
# define MODULE2
"resolve",
#endif
#ifdef HAVE_MACHINED
# define MODULE3 "mymachines\0"
#else
# define MODULE3
"mymachines",
#endif
#define MODULE4 "dns\0"
"dns",
NULL);
if (!modules)
return -ENOMEM;
if (argc > 2) {
char **name;
int family;
union in_addr_union address;
STRV_FOREACH(name, argv + 2) {
r = in_addr_from_string_auto(*name, &family, &address);
if (r < 0) {
/* assume this is a name */
r = strv_extend(&names, *name);
if (r < 0)
return r;
} else {
if (!GREEDY_REALLOC0(addrs, n_allocated, n + 1))
return -ENOMEM;
addrs[n++] = (struct local_address) { .family = family,
.address = address };
}
}
} else {
_cleanup_free_ char *hostname;
hostname = gethostname_malloc();
if (!hostname)
return -ENOMEM;
names = strv_new("localhost", "gateway", "foo_no_such_host", hostname, NULL);
if (!names)
return -ENOMEM;
n = make_addresses(&addrs);
if (n < 0)
return n;
}
*the_modules = modules;
*the_names = names;
modules = names = NULL;
*the_addresses = addrs;
*n_addresses = n;
addrs = NULL;
return 0;
}
int main(int argc, char **argv) {
_cleanup_free_ char *dir = NULL, *hostname = NULL;
const char *module;
const uint32_t local_address_ipv4 = htobe32(0x7F000001);
const uint32_t local_address_ipv4_2 = htobe32(0x7F000002);
_cleanup_free_ char *dir = NULL;
_cleanup_strv_free_ char **modules = NULL, **names = NULL;
_cleanup_free_ struct local_address *addresses = NULL;
int n_addresses;
char **module;
int r;
log_set_max_level(LOG_INFO);
log_parse_environment();
dir = dirname_malloc(argv[0]);
assert_se(dir);
hostname = gethostname_malloc();
assert_se(hostname);
n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses);
if (n_addresses < 0) {
log_info_errno(n_addresses, "Failed to query local addresses: %m");
n_addresses = 0;
r = parse_argv(argc, argv, &modules, &names, &addresses, &n_addresses);
if (r < 0) {
log_error_errno(r, "Failed to parse arguments: %m");
return EXIT_FAILURE;
}
NULSTR_FOREACH(module, MODULE1 MODULE2 MODULE3 MODULE4) {
void *handle;
const char *name;
int i;
dir = dirname_malloc(argv[0]);
if (!dir)
return EXIT_FAILURE;
log_info("======== %s ========", module);
handle = open_handle(streq(module, "dns") ? NULL : dir,
module,
RTLD_LAZY|RTLD_NODELETE);
NULSTR_FOREACH(name, "localhost\0" "gateway\0" "foo_no_such_host\0")
test_byname(handle, module, name);
test_byname(handle, module, hostname);
test_byaddr(handle, module, &local_address_ipv4, sizeof local_address_ipv4, AF_INET);
test_byaddr(handle, module, &local_address_ipv4_2, sizeof local_address_ipv4_2, AF_INET);
test_byaddr(handle, module, &in6addr_loopback, sizeof in6addr_loopback, AF_INET6);
for (i = 0; i < n_addresses; i++)
test_byaddr(handle, module,
&addresses[i].address,
FAMILY_ADDRESS_SIZE(addresses[i].family),
addresses[i].family);
dlclose(handle);
log_info(" ");
STRV_FOREACH(module, modules) {
r = test_one_module(dir, *module, names, addresses, n_addresses);
if (r < 0)
return EXIT_FAILURE;
}
return EXIT_SUCCESS;