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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /resolv/tst-resolv-search.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.bz2 glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'resolv/tst-resolv-search.c')
-rw-r--r-- | resolv/tst-resolv-search.c | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/resolv/tst-resolv-search.c b/resolv/tst-resolv-search.c deleted file mode 100644 index a5406b3b0e..0000000000 --- a/resolv/tst-resolv-search.c +++ /dev/null @@ -1,344 +0,0 @@ -/* Test search/default domain name behavior. - Copyright (C) 2016-2017 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/>. */ - -#include <resolv.h> -#include <stdlib.h> -#include <string.h> -#include <support/check.h> -#include <support/check_nss.h> -#include <support/resolv_test.h> -#include <support/support.h> -#include <support/xmemstream.h> - -struct item -{ - const char *name; - int response; -}; - -const struct item items[] = - { - {"hostname.usersys.example.com", 1}, - {"hostname.corp.example.com", 1}, - {"hostname.example.com", 1}, - - {"mail.corp.example.com", 1}, - {"mail.example.com", 1}, - - {"file.corp.example.com", 2}, - {"file.corp", 1}, - {"file.example.com", 1}, - {"servfail-usersys.usersys.example.com", -ns_r_servfail}, - {"servfail-usersys.corp.example.com", 1}, - {"servfail-usersys.example.com", 1}, - {"servfail-corp.usersys.example.com", 1}, - {"servfail-corp.corp.example.com", -ns_r_servfail}, - {"servfail-corp.example.com", 1}, - {"www.example.com", 1}, - {"large.example.com", 200}, - - /* Test query amplification with a SERVFAIL response combined with - a large RRset. */ - {"large-servfail.usersys.example.com", -ns_r_servfail}, - {"large-servfail.example.com", 2000}, - {} - }; - -enum - { - name_not_found = -1, - name_no_data = -2 - }; - -static int -find_name (const char *name) -{ - for (int i = 0; items[i].name != NULL; ++i) - { - if (strcmp (name, items[i].name) == 0) - return i; - } - if (strcmp (name, "example.com") == 0 - || strcmp (name, "usersys.example.com") == 0 - || strcmp (name, "corp.example.com") == 0) - return name_no_data; - return name_not_found; -} - -static int rcode_override_server_index = -1; -static int rcode_override; - -static void -response (const struct resolv_response_context *ctx, - struct resolv_response_builder *b, - const char *qname, uint16_t qclass, uint16_t qtype) -{ - if (ctx->server_index == rcode_override_server_index) - { - struct resolv_response_flags flags = {.rcode = rcode_override}; - resolv_response_init (b, flags); - resolv_response_add_question (b, qname, qclass, qtype); - return; - } - - int index = find_name (qname); - struct resolv_response_flags flags = {}; - if (index == name_not_found) - flags.rcode = ns_r_nxdomain; - else if (index >= 0 && items[index].response < 0) - flags.rcode = -items[index].response; - else if (index >= 0 && items[index].response > 5 && !ctx->tcp) - /* Force TCP if more than 5 addresses where requested. */ - flags.tc = true; - resolv_response_init (b, flags); - resolv_response_add_question (b, qname, qclass, qtype); - - if (flags.tc || index < 0 || items[index].response < 0) - return; - - resolv_response_section (b, ns_s_an); - - for (int i = 0; i < items[index].response; ++i) - { - resolv_response_open_record (b, qname, qclass, qtype, 0); - - switch (qtype) - { - case T_A: - { - char addr[4] = {10, index, i >> 8, i}; - resolv_response_add_data (b, addr, sizeof (addr)); - } - break; - case T_AAAA: - { - char addr[16] - = {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, - 0, index + 1, (i + 1) >> 8, i + 1}; - resolv_response_add_data (b, addr, sizeof (addr)); - } - break; - default: - support_record_failure (); - printf ("error: unexpected QTYPE: %s/%u/%u\n", - qname, qclass, qtype); - } - resolv_response_close_record (b); - } -} - -enum output_format - { - format_get, format_gai - }; - -static void -format_expected_1 (FILE *out, int family, enum output_format format, int index) -{ - for (int i = 0; i < items[index].response; ++i) - { - char address[200]; - switch (family) - { - case AF_INET: - snprintf (address, sizeof (address), "10.%d.%d.%d", - index, (i >> 8) & 0xff, i & 0xff); - break; - case AF_INET6: - snprintf (address, sizeof (address), "2001:db8::%x:%x", - index + 1, i + 1); - break; - default: - FAIL_EXIT1 ("unreachable"); - } - - switch (format) - { - case format_get: - fprintf (out, "address: %s\n", address); - break; - case format_gai: - fprintf (out, "address: STREAM/TCP %s 80\n", address); - } - } -} - -static char * -format_expected (const char *fqdn, int family, enum output_format format) -{ - int index = find_name (fqdn); - TEST_VERIFY_EXIT (index >= 0); - struct xmemstream stream; - xopen_memstream (&stream); - - TEST_VERIFY_EXIT (items[index].response >= 0); - if (format == format_get) - fprintf (stream.out, "name: %s\n", items[index].name); - if (family == AF_INET || family == AF_UNSPEC) - format_expected_1 (stream.out, AF_INET, format, index); - if (family == AF_INET6 || family == AF_UNSPEC) - format_expected_1 (stream.out, AF_INET6, format, index); - - xfclose_memstream (&stream); - return stream.buffer; -} - -static void -do_get (const char *name, const char *fqdn, int family) -{ - char *expected = format_expected (fqdn, family, format_get); - if (family == AF_INET) - { - char *query = xasprintf ("gethostbyname (\"%s\")", name); - check_hostent (query, gethostbyname (name), expected); - free (query); - } - char *query = xasprintf ("gethostbyname2 (\"%s\", %d)", name, family); - check_hostent (query, gethostbyname2 (name, family), expected); - - /* Test res_search. */ - int qtype; - switch (family) - { - case AF_INET: - qtype = T_A; - break; - case AF_INET6: - qtype = T_AAAA; - break; - default: - qtype = -1; - } - if (qtype >= 0) - { - int sz = 512; - unsigned char *response = xmalloc (sz); - int ret = res_search (name, C_IN, qtype, response, sz); - TEST_VERIFY_EXIT (ret >= 0); - if (ret > sz) - { - /* Truncation. Retry with a larger buffer. */ - sz = 65535; - unsigned char *newptr = xrealloc (response, sz); - response = newptr; - - ret = res_search (name, C_IN, qtype, response, sz); - TEST_VERIFY_EXIT (ret >= 0); - TEST_VERIFY_EXIT (ret < sz); - } - check_dns_packet (query, response, ret, expected); - free (response); - } - - free (query); - free (expected); -} - -static void -do_gai (const char *name, const char *fqdn, int family) -{ - struct addrinfo hints = - { - .ai_family = family, - .ai_protocol = IPPROTO_TCP, - .ai_socktype = SOCK_STREAM - }; - struct addrinfo *ai; - char *query = xasprintf ("%s:80 [%d]", name, family); - int ret = getaddrinfo (name, "80", &hints, &ai); - char *expected = format_expected (fqdn, family, format_gai); - check_addrinfo (query, ai, ret, expected); - if (ret == 0) - freeaddrinfo (ai); - free (expected); - free (query); -} - -static void -do_both (const char *name, const char *fqdn) -{ - do_get (name, fqdn, AF_INET); - do_get (name, fqdn, AF_INET6); - do_gai (name, fqdn, AF_INET); - do_gai (name, fqdn, AF_INET6); - do_gai (name, fqdn, AF_UNSPEC); -} - -static void -do_test_all (bool unconnectable_server) -{ - struct resolv_redirect_config config = - { - .response_callback = response, - .search = {"usersys.example.com", "corp.example.com", "example.com"}, - }; - struct resolv_test *obj = resolv_test_start (config); - - if (unconnectable_server) - { - /* 255.255.255.255 results in an immediate connect failure. The - next server will supply the answer instead. This is a - triggering condition for bug 19791. */ - _res.nsaddr_list[0].sin_addr.s_addr = -1; - _res.nsaddr_list[0].sin_port = htons (53); - } - - do_both ("file", "file.corp.example.com"); - do_both ("www", "www.example.com"); - do_both ("servfail-usersys", "servfail-usersys.corp.example.com"); - do_both ("servfail-corp", "servfail-corp.usersys.example.com"); - do_both ("large", "large.example.com"); - do_both ("large-servfail", "large-servfail.example.com"); - do_both ("file.corp", "file.corp"); - - /* Check that SERVFAIL and REFUSED responses do not alter the search - path resolution. */ - rcode_override_server_index = 0; - rcode_override = ns_r_servfail; - do_both ("hostname", "hostname.usersys.example.com"); - do_both ("large", "large.example.com"); - do_both ("large-servfail", "large-servfail.example.com"); - rcode_override = ns_r_refused; - do_both ("hostname", "hostname.usersys.example.com"); - do_both ("large", "large.example.com"); - do_both ("large-servfail", "large-servfail.example.com"); - /* Likewise, but with an NXDOMAIN for the first search path - entry. */ - rcode_override = ns_r_servfail; - do_both ("mail", "mail.corp.example.com"); - rcode_override = ns_r_refused; - do_both ("mail", "mail.corp.example.com"); - /* Likewise, but with ndots handling. */ - rcode_override = ns_r_servfail; - do_both ("file.corp", "file.corp"); - rcode_override = ns_r_refused; - do_both ("file.corp", "file.corp"); - - resolv_test_end (obj); -} - -static int -do_test (void) -{ - for (int unconnectable_server = 0; unconnectable_server < 2; - ++unconnectable_server) - do_test_all (unconnectable_server); - return 0; -} - -#include <support/test-driver.c> |