tst-res_use_inet6: Enhance test to cover IPv4-to-IPv6 address mapping
This requires more control over the response data, so it is now determined by flags embedded in the query name.
This commit is contained in:
Florian Weimer
parent
2ae5be041d
commit
5e9c4d17fe
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2017-09-06 Florian Weimer <fweimer@redhat.com>
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Enhance tst-res_use_inet6 to test IPv4-to-IPv6 address mapping.
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* resolv/tst-res_use_inet6.c (response): Process flags embedded in
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the QNAME.
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(test_gai): Adjust query names. Add additional tests.
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(test_get2_any, test_get2_no_inet6, test_get2_inet6): Split from
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test_get2. Adjust query names. Add additional tests.
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(test_no_inet6): New function, extracted from threadfunc.
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(threadfunc): Call test_get2_any, test_get2_inet6, test_no_inet6.
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Add additional tests.
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2017-09-06 Mike FABIAN <mfabian@redhat.com>
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[BZ #22070]
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@ -19,18 +19,44 @@
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#include <netdb.h>
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#include <resolv.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/check_nss.h>
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#include <support/resolv_test.h>
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#include <support/xthread.h>
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/* Produce a response based on QNAME: Certain characters in the first
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label of QNAME trigger the inclusion of resource records:
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'a' A record (IPv4 address)
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'q' AAAA record (quad A record, IPv6 address)
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'm' record type must match QTYPE (no additional records)
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QTYPE is ignored for record type selection if 'm' is not
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specified. */
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static void
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response (const struct resolv_response_context *ctx,
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struct resolv_response_builder *b,
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const char *qname, uint16_t qclass, uint16_t qtype)
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{
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bool include_both = strcmp (qname, "both.example") == 0;
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bool include_a = qtype == T_A || include_both;
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bool include_aaaa = qtype == T_AAAA || include_both;
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bool include_a = false;
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bool include_aaaa = false;
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bool include_match = false;
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for (const char *p = qname; *p != '.' && *p != '\0'; ++p)
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{
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if (*p == 'a')
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include_a = true;
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else if (*p == 'q')
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include_aaaa = true;
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else if (*p == 'm')
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include_match = true;
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}
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if (include_match)
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{
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if (qtype == T_A)
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include_aaaa = false;
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else if (qtype == T_AAAA)
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include_a = false;
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}
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resolv_response_init (b, (struct resolv_response_flags) {});
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resolv_response_add_question (b, qname, qclass, qtype);
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@ -64,16 +90,21 @@ test_gai (void)
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.ai_protocol = IPPROTO_TCP,
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};
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struct addrinfo *ai;
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int ret = getaddrinfo ("www1.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_UNSPEC www1.example", ai, ret,
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int ret = getaddrinfo ("qam.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_UNSPEC qam.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n"
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("both.example", "80", &hints, &ai);
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ret = getaddrinfo ("am.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_UNSPEC am.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("qa.example", "80", &hints, &ai);
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/* Combined A/AAAA responses currently result in address
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duplication. */
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check_addrinfo ("getaddrinfo AF_UNSPEC both.example", ai, ret,
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check_addrinfo ("getaddrinfo AF_UNSPEC qa.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n"
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"address: STREAM/TCP 192.0.2.17 80\n"
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"address: STREAM/TCP 2001:db8::1 80\n"
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@ -89,13 +120,18 @@ test_gai (void)
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.ai_protocol = IPPROTO_TCP,
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};
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struct addrinfo *ai;
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int ret = getaddrinfo ("www1.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET www1.example", ai, ret,
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int ret = getaddrinfo ("qam.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET qam.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("both.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET both.example", ai, ret,
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ret = getaddrinfo ("am.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET am.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("qa.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET qa.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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@ -108,40 +144,131 @@ test_gai (void)
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.ai_protocol = IPPROTO_TCP,
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};
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struct addrinfo *ai;
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int ret = getaddrinfo ("www1.example", "80", &hints, &ai);
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int ret = getaddrinfo ("qa.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo (AF_INET6)", ai, ret,
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("both.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET6 both.example", ai, ret,
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ret = getaddrinfo ("am.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET6 am.example", ai, ret,
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"error: No address associated with hostname\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("qam.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET6 qam.example", ai, ret,
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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}
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}
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/* Test that gethostbyname2 is not influenced by RES_USE_INET6. */
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/* Test that gethostbyname2 is mostly not influenced by
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RES_USE_INET6. */
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static void
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test_get2 (void)
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test_get2_any (void)
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{
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check_hostent ("gethostbyname2 AF_INET www1.example",
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gethostbyname2 ("www1.example", AF_INET),
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"name: www1.example\n"
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check_hostent ("gethostbyname2 AF_INET am.example",
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gethostbyname2 ("am.example", AF_INET),
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"name: am.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET both.example",
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gethostbyname2 ("both.example", AF_INET),
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"name: both.example\n"
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check_hostent ("gethostbyname2 AF_INET a.example",
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gethostbyname2 ("a.example", AF_INET),
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"name: a.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET qm.example",
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gethostbyname2 ("qm.example", AF_INET),
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"error: NO_ADDRESS\n");
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check_hostent ("gethostbyname2 AF_INET q.example",
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gethostbyname2 ("q.example", AF_INET),
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"error: NO_RECOVERY\n");
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check_hostent ("gethostbyname2 AF_INET qam.example",
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gethostbyname2 ("qam.example", AF_INET),
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"name: qam.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET qa.example",
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gethostbyname2 ("qa.example", AF_INET),
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"name: qa.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET6 www1.example",
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gethostbyname2 ("www1.example", AF_INET6),
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"name: www1.example\n"
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check_hostent ("gethostbyname2 AF_INET6 qm.example",
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gethostbyname2 ("qm.example", AF_INET6),
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"name: qm.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname2 AF_INET6 both.example",
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gethostbyname2 ("both.example", AF_INET6),
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"name: both.example\n"
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check_hostent ("gethostbyname2 AF_INET6 q.example",
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gethostbyname2 ("q.example", AF_INET6),
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"name: q.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname2 AF_INET6 qam.example",
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gethostbyname2 ("qam.example", AF_INET6),
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"name: qam.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname2 AF_INET6 qa.example",
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gethostbyname2 ("qa.example", AF_INET6),
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"name: qa.example\n"
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"address: 2001:db8::1\n");
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/* Additional AF_INET6 tests depend on RES_USE_INET6; see below. */
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}
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/* gethostbyname2 tests with RES_USE_INET6 disabled. */
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static void
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test_get2_no_inet6 (void)
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{
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test_get2_any ();
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check_hostent ("gethostbyname2 AF_INET6 am.example",
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gethostbyname2 ("am.example", AF_INET6),
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"error: NO_ADDRESS\n");
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check_hostent ("gethostbyname2 AF_INET6 a.example",
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gethostbyname2 ("a.example", AF_INET6),
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"error: NO_RECOVERY\n");
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}
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/* gethostbyname2 tests with RES_USE_INET6 enabled. */
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static void
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test_get2_inet6 (void)
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{
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test_get2_any ();
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check_hostent ("gethostbyname2 AF_INET6 am.example",
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gethostbyname2 ("am.example", AF_INET6),
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"name: am.example\n"
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"address: ::ffff:192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET6 a.example",
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gethostbyname2 ("a.example", AF_INET6),
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"error: NO_RECOVERY\n");
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}
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/* Collection of tests which assume no RES_USE_INET6 flag. */
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static void
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test_no_inet6 (void)
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{
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check_hostent ("gethostbyname (\"a.example\")",
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gethostbyname ("a.example"),
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"name: a.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"qa.example\")",
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gethostbyname ("qa.example"),
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"name: qa.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"am.example\")",
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gethostbyname ("am.example"),
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"name: am.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"qam.example\")",
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gethostbyname ("qam.example"),
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"name: qam.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"q.example\")",
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gethostbyname ("q.example"),
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"error: NO_RECOVERY\n");
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check_hostent ("gethostbyname (\"qm.example\")",
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gethostbyname ("qm.example"),
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"error: NO_ADDRESS\n");
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test_get2_no_inet6 ();
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test_get2_no_inet6 ();
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test_gai ();
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test_get2_no_inet6 ();
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test_get2_no_inet6 ();
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}
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static void *
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@ -153,28 +280,42 @@ threadfunc (void *ignored)
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.response_callback = response
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});
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check_hostent ("gethostbyname (\"www1.example\")",
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gethostbyname ("www1.example"),
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"name: www1.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"both.example\")",
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gethostbyname ("both.example"),
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"name: both.example\n"
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"address: 192.0.2.17\n");
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test_get2 ();
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test_gai ();
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TEST_VERIFY ((_res.options & RES_USE_INET6) == 0);
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test_no_inet6 ();
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_res.options |= RES_USE_INET6;
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check_hostent ("gethostbyname (\"www1.example\")",
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gethostbyname ("www1.example"),
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"name: www1.example\n"
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check_hostent ("gethostbyname (\"a.inet6.example\")",
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gethostbyname ("a.inet6.example"),
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"error: NO_RECOVERY\n");
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check_hostent ("gethostbyname (\"am.inet6.example\")",
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gethostbyname ("am.inet6.example"),
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"name: am.inet6.example\n"
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"address: ::ffff:192.0.2.17\n");
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check_hostent ("gethostbyname (\"qa.inet6.example\")",
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gethostbyname ("qa.inet6.example"),
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"name: qa.inet6.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname (\"both.example\")",
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gethostbyname ("both.example"),
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"name: both.example\n"
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check_hostent ("gethostbyname (\"qam.inet6.example\")",
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gethostbyname ("qam.inet6.example"),
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"name: qam.inet6.example\n"
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"address: 2001:db8::1\n");
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test_get2 ();
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check_hostent ("gethostbyname (\"q.inet6.example\")",
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gethostbyname ("q.inet6.example"),
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"name: q.inet6.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname (\"qm.inet6.example\")",
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gethostbyname ("qm.inet6.example"),
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"name: qm.inet6.example\n"
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"address: 2001:db8::1\n");
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test_get2_inet6 ();
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test_get2_inet6 ();
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test_gai ();
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test_get2_inet6 ();
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test_get2_inet6 ();
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TEST_VERIFY (_res.options & RES_USE_INET6);
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_res.options &= ~RES_USE_INET6;
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test_no_inet6 ();
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resolv_test_end (obj);
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