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-rw-r--r--resolv/tst-resolv-res_init-skeleton.c601
1 files changed, 0 insertions, 601 deletions
diff --git a/resolv/tst-resolv-res_init-skeleton.c b/resolv/tst-resolv-res_init-skeleton.c
deleted file mode 100644
index 1d2c475c4b..0000000000
--- a/resolv/tst-resolv-res_init-skeleton.c
+++ /dev/null
@@ -1,601 +0,0 @@
-/* Test parsing of /etc/resolv.conf. Genric version.
- Copyright (C) 2017 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-/* Before including this file, TEST_THREAD has to be defined to 0 or
- 1, depending on whether the threading tests should be compiled
- in. */
-
-#include <arpa/inet.h>
-#include <gnu/lib-names.h>
-#include <netdb.h>
-#include <resolv/resolv-internal.h> /* For DEPRECATED_RES_USE_INET6. */
-#include <stdio.h>
-#include <stdlib.h>
-#include <support/capture_subprocess.h>
-#include <support/check.h>
-#include <support/namespace.h>
-#include <support/run_diff.h>
-#include <support/support.h>
-#include <support/temp_file.h>
-#include <support/test-driver.h>
-#include <support/xstdio.h>
-#include <support/xunistd.h>
-
-#if TEST_THREAD
-# include <support/xthread.h>
-#endif
-
-/* This is the host name used to ensure predictable behavior of
- res_init. */
-static const char *const test_hostname = "www.example.com";
-
-/* Path to the test root directory. */
-static char *path_chroot;
-
-/* Path to resolv.conf under path_chroot (outside the chroot). */
-static char *path_resolv_conf;
-
-static void
-prepare (int argc, char **argv)
-{
- path_chroot = xasprintf ("%s/tst-resolv-res_init-XXXXXX", test_dir);
- if (mkdtemp (path_chroot) == NULL)
- FAIL_EXIT1 ("mkdtemp (\"%s\"): %m", path_chroot);
- add_temp_file (path_chroot);
-
- /* Create the /etc directory in the chroot environment. */
- char *path_etc = xasprintf ("%s/etc", path_chroot);
- xmkdir (path_etc, 0777);
- add_temp_file (path_etc);
-
- /* Create an empty resolv.conf file. */
- path_resolv_conf = xasprintf ("%s/resolv.conf", path_etc);
- add_temp_file (path_resolv_conf);
- support_write_file_string (path_resolv_conf, "");
-
- free (path_etc);
-
- /* valgrind needs a temporary directory in the chroot. */
- {
- char *path_tmp = xasprintf ("%s/tmp", path_chroot);
- xmkdir (path_tmp, 0777);
- add_temp_file (path_tmp);
- free (path_tmp);
- }
-}
-
-/* Verify that the chroot environment has been set up. */
-static void
-check_chroot_working (void *closure)
-{
- xchroot (path_chroot);
- FILE *fp = xfopen (_PATH_RESCONF, "r");
- xfclose (fp);
-
- TEST_VERIFY_EXIT (res_init () == 0);
- TEST_VERIFY (_res.options & RES_INIT);
-
- char buf[100];
- if (gethostname (buf, sizeof (buf)) < 0)
- FAIL_EXIT1 ("gethostname: %m");
- if (strcmp (buf, test_hostname) != 0)
- FAIL_EXIT1 ("unexpected host name: %s", buf);
-}
-
-/* If FLAG is set in *OPTIONS, write NAME to FP, and clear it in
- *OPTIONS. */
-static void
-print_option_flag (FILE *fp, int *options, int flag, const char *name)
-{
- if (*options & flag)
- {
- fprintf (fp, " %s", name);
- *options &= ~flag;
- }
-}
-
-/* Write a decoded version of the resolver configuration *RESP to the
- stream FP. */
-static void
-print_resp (FILE *fp, res_state resp)
-{
- /* The options directive. */
- {
- /* RES_INIT is used internally for tracking initialization. */
- TEST_VERIFY (resp->options & RES_INIT);
- /* Also mask out other default flags which cannot be set through
- the options directive. */
- int options
- = resp->options & ~(RES_INIT | RES_RECURSE | RES_DEFNAMES | RES_DNSRCH);
- if (options != 0
- || resp->ndots != 1
- || resp->retrans != RES_TIMEOUT
- || resp->retry != RES_DFLRETRY)
- {
- fputs ("options", fp);
- if (resp->ndots != 1)
- fprintf (fp, " ndots:%d", resp->ndots);
- if (resp->retrans != RES_TIMEOUT)
- fprintf (fp, " timeout:%d", resp->retrans);
- if (resp->retry != RES_DFLRETRY)
- fprintf (fp, " attempts:%d", resp->retry);
- print_option_flag (fp, &options, RES_USEVC, "use-vc");
- print_option_flag (fp, &options, DEPRECATED_RES_USE_INET6, "inet6");
- print_option_flag (fp, &options, RES_ROTATE, "rotate");
- print_option_flag (fp, &options, RES_USE_EDNS0, "edns0");
- print_option_flag (fp, &options, RES_SNGLKUP,
- "single-request");
- print_option_flag (fp, &options, RES_SNGLKUPREOP,
- "single-request-reopen");
- print_option_flag (fp, &options, RES_NOTLDQUERY, "no-tld-query");
- fputc ('\n', fp);
- if (options != 0)
- fprintf (fp, "; error: unresolved option bits: 0x%x\n", options);
- }
- }
-
- /* The search and domain directives. */
- if (resp->dnsrch[0] != NULL)
- {
- fputs ("search", fp);
- for (int i = 0; i < MAXDNSRCH && resp->dnsrch[i] != NULL; ++i)
- {
- fputc (' ', fp);
- fputs (resp->dnsrch[i], fp);
- }
- fputc ('\n', fp);
- }
- else if (resp->defdname[0] != '\0')
- fprintf (fp, "domain %s\n", resp->defdname);
-
- /* The sortlist directive. */
- if (resp->nsort > 0)
- {
- fputs ("sortlist", fp);
- for (int i = 0; i < resp->nsort && i < MAXRESOLVSORT; ++i)
- {
- char net[20];
- if (inet_ntop (AF_INET, &resp->sort_list[i].addr,
- net, sizeof (net)) == NULL)
- FAIL_EXIT1 ("inet_ntop: %m\n");
- char mask[20];
- if (inet_ntop (AF_INET, &resp->sort_list[i].mask,
- mask, sizeof (mask)) == NULL)
- FAIL_EXIT1 ("inet_ntop: %m\n");
- fprintf (fp, " %s/%s", net, mask);
- }
- fputc ('\n', fp);
- }
-
- /* The nameserver directives. */
- for (size_t i = 0; i < resp->nscount; ++i)
- {
- char host[NI_MAXHOST];
- char service[NI_MAXSERV];
-
- /* See get_nsaddr in res_send.c. */
- void *addr;
- size_t addrlen;
- if (resp->nsaddr_list[i].sin_family == 0
- && resp->_u._ext.nsaddrs[i] != NULL)
- {
- addr = resp->_u._ext.nsaddrs[i];
- addrlen = sizeof (*resp->_u._ext.nsaddrs[i]);
- }
- else
- {
- addr = &resp->nsaddr_list[i];
- addrlen = sizeof (resp->nsaddr_list[i]);
- }
-
- int ret = getnameinfo (addr, addrlen,
- host, sizeof (host), service, sizeof (service),
- NI_NUMERICHOST | NI_NUMERICSERV);
- if (ret != 0)
- {
- if (ret == EAI_SYSTEM)
- fprintf (fp, "; error: getnameinfo: %m\n");
- else
- fprintf (fp, "; error: getnameinfo: %s\n", gai_strerror (ret));
- }
- else
- {
- fprintf (fp, "nameserver %s\n", host);
- if (strcmp (service, "53") != 0)
- fprintf (fp, "; unrepresentable port number %s\n\n", service);
- }
- }
-
- TEST_VERIFY (!ferror (fp));
-}
-
-/* Parameters of one test case. */
-struct test_case
-{
- /* A short, descriptive name of the test. */
- const char *name;
-
- /* The contents of the /etc/resolv.conf file. */
- const char *conf;
-
- /* The expected output from print_resp. */
- const char *expected;
-
- /* Setting for the LOCALDOMAIN environment variable. NULL if the
- variable is not to be set. */
- const char *localdomain;
-
- /* Setting for the RES_OPTIONS environment variable. NULL if the
- variable is not to be set. */
- const char *res_options;
-};
-
-enum test_init
-{
- test_init,
- test_ninit,
- test_mkquery,
- test_gethostbyname,
- test_getaddrinfo,
- test_init_method_last = test_getaddrinfo
-};
-
-/* Closure argument for run_res_init. */
-struct test_context
-{
- enum test_init init;
- const struct test_case *t;
-};
-
-static void
-setup_nss_dns_and_chroot (void)
-{
- /* Load nss_dns outside of the chroot. */
- if (dlopen (LIBNSS_DNS_SO, RTLD_LAZY) == NULL)
- FAIL_EXIT1 ("could not load " LIBNSS_DNS_SO ": %s", dlerror ());
- xchroot (path_chroot);
- /* Force the use of nss_dns. */
- __nss_configure_lookup ("hosts", "dns");
-}
-
-/* Run res_ninit or res_init in a subprocess and dump the parsed
- resolver state to standard output. */
-static void
-run_res_init (void *closure)
-{
- struct test_context *ctx = closure;
- TEST_VERIFY (getenv ("LOCALDOMAIN") == NULL);
- TEST_VERIFY (getenv ("RES_OPTIONS") == NULL);
- if (ctx->t->localdomain != NULL)
- setenv ("LOCALDOMAIN", ctx->t->localdomain, 1);
- if (ctx->t->res_options != NULL)
- setenv ("RES_OPTIONS", ctx->t->res_options, 1);
-
- switch (ctx->init)
- {
- case test_init:
- xchroot (path_chroot);
- TEST_VERIFY (res_init () == 0);
- print_resp (stdout, &_res);
- return;
-
- case test_ninit:
- xchroot (path_chroot);
- res_state resp = xmalloc (sizeof (*resp));
- memset (resp, 0, sizeof (*resp));
- TEST_VERIFY (res_ninit (resp) == 0);
- print_resp (stdout, resp);
- res_nclose (resp);
- free (resp);
- return;
-
- case test_mkquery:
- xchroot (path_chroot);
- unsigned char buf[512];
- TEST_VERIFY (res_mkquery (QUERY, "www.example",
- C_IN, ns_t_a, NULL, 0,
- NULL, buf, sizeof (buf)) > 0);
- print_resp (stdout, &_res);
- return;
-
- case test_gethostbyname:
- setup_nss_dns_and_chroot ();
- /* Trigger implicit initialization of the _res structure. The
- actual lookup result is immaterial. */
- (void )gethostbyname ("www.example");
- print_resp (stdout, &_res);
- return;
-
- case test_getaddrinfo:
- setup_nss_dns_and_chroot ();
- /* Trigger implicit initialization of the _res structure. The
- actual lookup result is immaterial. */
- struct addrinfo *ai;
- (void) getaddrinfo ("www.example", NULL, NULL, &ai);
- print_resp (stdout, &_res);
- return;
- }
-
- FAIL_EXIT1 ("invalid init method %d", ctx->init);
-}
-
-#if TEST_THREAD
-/* Helper function which calls run_res_init from a thread. */
-static void *
-run_res_init_thread_func (void *closure)
-{
- run_res_init (closure);
- return NULL;
-}
-
-/* Variant of res_run_init which runs the function on a non-main
- thread. */
-static void
-run_res_init_on_thread (void *closure)
-{
- xpthread_join (xpthread_create (NULL, run_res_init_thread_func, closure));
-}
-#endif /* TEST_THREAD */
-
-struct test_case test_cases[] =
- {
- {.name = "empty file",
- .conf = "",
- .expected = "search example.com\n"
- "nameserver 127.0.0.1\n"
- },
- {.name = "empty file with LOCALDOMAIN",
- .conf = "",
- .expected = "search example.net\n"
- "nameserver 127.0.0.1\n",
- .localdomain = "example.net",
- },
- {.name = "empty file with RES_OPTIONS",
- .conf = "",
- .expected = "options attempts:5 edns0\n"
- "search example.com\n"
- "nameserver 127.0.0.1\n",
- .res_options = "edns0 attempts:5",
- },
- {.name = "empty file with RES_OPTIONS and LOCALDOMAIN",
- .conf = "",
- .expected = "options attempts:5 edns0\n"
- "search example.org\n"
- "nameserver 127.0.0.1\n",
- .localdomain = "example.org",
- .res_options = "edns0 attempts:5",
- },
- {.name = "basic",
- .conf = "domain example.net\n"
- "search corp.example.com example.com\n"
- "nameserver 192.0.2.1\n",
- .expected = "search corp.example.com example.com\n"
- "nameserver 192.0.2.1\n"
- },
- {.name = "whitespace",
- .conf = "# This test covers comment and whitespace processing "
- " (trailing whitespace,\n"
- "# missing newline at end of file).\n"
- "\n"
- "domain example.net\n"
- ";search commented out\n"
- "search corp.example.com\texample.com\n"
- "#nameserver 192.0.2.3\n"
- "nameserver 192.0.2.1 \n"
- "nameserver 192.0.2.2", /* No \n at end of file. */
- .expected = "search corp.example.com example.com\n"
- "nameserver 192.0.2.1\n"
- "nameserver 192.0.2.2\n"
- },
- {.name = "option values, multiple servers",
- .conf = "options\tinet6\tndots:3 edns0\tattempts:5\ttimeout:19\n"
- "domain example.net\n"
- ";domain comment\n"
- "search corp.example.com\texample.com\n"
- "nameserver 192.0.2.1\n"
- "nameserver ::1\n"
- "nameserver 192.0.2.2\n",
- .expected = "options ndots:3 timeout:19 attempts:5 inet6 edns0\n"
- "search corp.example.com example.com\n"
- "nameserver 192.0.2.1\n"
- "nameserver ::1\n"
- "nameserver 192.0.2.2\n"
- },
- {.name = "out-of-range option vales",
- .conf = "options use-vc timeout:999 attempts:999 ndots:99\n"
- "search example.com\n",
- .expected = "options ndots:15 timeout:30 attempts:5 use-vc\n"
- "search example.com\n"
- "nameserver 127.0.0.1\n"
- },
- {.name = "repeated directives",
- .conf = "options ndots:3 use-vc\n"
- "options edns0 ndots:2\n"
- "domain corp.example\n"
- "search example.net corp.example.com example.com\n"
- "search example.org\n"
- "search\n",
- .expected = "options ndots:2 use-vc edns0\n"
- "search example.org\n"
- "nameserver 127.0.0.1\n"
- },
- {.name = "many name servers, sortlist",
- .conf = "options single-request\n"
- "search example.org example.com example.net corp.example.com\n"
- "sortlist 192.0.2.0/255.255.255.0\n"
- "nameserver 192.0.2.1\n"
- "nameserver 192.0.2.2\n"
- "nameserver 192.0.2.3\n"
- "nameserver 192.0.2.4\n"
- "nameserver 192.0.2.5\n"
- "nameserver 192.0.2.6\n"
- "nameserver 192.0.2.7\n"
- "nameserver 192.0.2.8\n",
- .expected = "options single-request\n"
- "search example.org example.com example.net corp.example.com\n"
- "sortlist 192.0.2.0/255.255.255.0\n"
- "nameserver 192.0.2.1\n"
- "nameserver 192.0.2.2\n"
- "nameserver 192.0.2.3\n"
- },
- {.name = "IPv4 and IPv6 nameservers",
- .conf = "options single-request\n"
- "search example.org example.com example.net corp.example.com"
- " legacy.example.com\n"
- "sortlist 192.0.2.0\n"
- "nameserver 192.0.2.1\n"
- "nameserver 2001:db8::2\n"
- "nameserver 192.0.2.3\n"
- "nameserver 2001:db8::4\n"
- "nameserver 192.0.2.5\n"
- "nameserver 2001:db8::6\n"
- "nameserver 192.0.2.7\n"
- "nameserver 2001:db8::8\n",
- .expected = "options single-request\n"
- "search example.org example.com example.net corp.example.com"
- " legacy.example.com\n"
- "sortlist 192.0.2.0/255.255.255.0\n"
- "nameserver 192.0.2.1\n"
- "nameserver 2001:db8::2\n"
- "nameserver 192.0.2.3\n"
- },
- {.name = "garbage after nameserver",
- .conf = "nameserver 192.0.2.1 garbage\n"
- "nameserver 192.0.2.2:5353\n"
- "nameserver 192.0.2.3 5353\n",
- .expected = "search example.com\n"
- "nameserver 192.0.2.1\n"
- "nameserver 192.0.2.3\n"
- },
- {.name = "RES_OPTIONS is cummulative",
- .conf = "options timeout:7 ndots:2 use-vc\n"
- "nameserver 192.0.2.1\n",
- .expected = "options ndots:3 timeout:7 attempts:5 use-vc edns0\n"
- "search example.com\n"
- "nameserver 192.0.2.1\n",
- .res_options = "attempts:5 ndots:3 edns0 ",
- },
- { NULL }
- };
-
-/* Run the indicated test case. This function assumes that the chroot
- contents has already been set up. */
-static void
-test_file_contents (const struct test_case *t)
-{
-#if TEST_THREAD
- for (int do_thread = 0; do_thread < 2; ++do_thread)
-#endif
- for (int init_method = 0; init_method <= test_init_method_last;
- ++init_method)
- {
- if (test_verbose > 0)
- printf ("info: testing init method %d\n", init_method);
- struct test_context ctx = { .init = init_method, .t = t };
- void (*func) (void *) = run_res_init;
-#if TEST_THREAD
- if (do_thread)
- func = run_res_init_on_thread;
-#endif
- struct support_capture_subprocess proc
- = support_capture_subprocess (func, &ctx);
- if (strcmp (proc.out.buffer, t->expected) != 0)
- {
- support_record_failure ();
- printf ("error: output mismatch for %s\n", t->name);
- support_run_diff ("expected", t->expected,
- "actual", proc.out.buffer);
- }
- support_capture_subprocess_check (&proc, t->name, 0,
- sc_allow_stdout);
- support_capture_subprocess_free (&proc);
- }
-}
-
-static int
-do_test (void)
-{
- support_become_root ();
- support_enter_network_namespace ();
- if (!support_in_uts_namespace () || !support_can_chroot ())
- return EXIT_UNSUPPORTED;
-
- /* We are in an UTS namespace, so we can set the host name without
- altering the state of the entire system. */
- if (sethostname (test_hostname, strlen (test_hostname)) != 0)
- FAIL_EXIT1 ("sethostname: %m");
-
- /* These environment variables affect resolv.conf parsing. */
- unsetenv ("LOCALDOMAIN");
- unsetenv ("RES_OPTIONS");
-
- /* Ensure that the chroot setup worked. */
- {
- struct support_capture_subprocess proc
- = support_capture_subprocess (check_chroot_working, NULL);
- support_capture_subprocess_check (&proc, "chroot", 0, sc_allow_none);
- support_capture_subprocess_free (&proc);
- }
-
- for (size_t i = 0; test_cases[i].name != NULL; ++i)
- {
- if (test_verbose > 0)
- printf ("info: running test: %s\n", test_cases[i].name);
- TEST_VERIFY (test_cases[i].conf != NULL);
- TEST_VERIFY (test_cases[i].expected != NULL);
-
- support_write_file_string (path_resolv_conf, test_cases[i].conf);
-
- test_file_contents (&test_cases[i]);
-
- /* The expected output from the empty file test is used for
- further tests. */
- if (test_cases[i].conf[0] == '\0')
- {
- if (test_verbose > 0)
- printf ("info: special test: missing file\n");
- TEST_VERIFY (unlink (path_resolv_conf) == 0);
- test_file_contents (&test_cases[i]);
-
- if (test_verbose > 0)
- printf ("info: special test: dangling symbolic link\n");
- TEST_VERIFY (symlink ("does-not-exist", path_resolv_conf) == 0);
- test_file_contents (&test_cases[i]);
- TEST_VERIFY (unlink (path_resolv_conf) == 0);
-
- if (test_verbose > 0)
- printf ("info: special test: unreadable file\n");
- support_write_file_string (path_resolv_conf, "");
- TEST_VERIFY (chmod (path_resolv_conf, 0) == 0);
- test_file_contents (&test_cases[i]);
-
- /* Restore the empty file. */
- TEST_VERIFY (unlink (path_resolv_conf) == 0);
- support_write_file_string (path_resolv_conf, "");
- }
- }
-
- free (path_chroot);
- path_chroot = NULL;
- free (path_resolv_conf);
- path_resolv_conf = NULL;
- return 0;
-}
-
-#define PREPARE prepare
-#include <support/test-driver.c>
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