unittest_resolver_common.hpp

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/* SPDX-License-Identifier: MPL-2.0 */
 
#ifndef __UNITTEST_RESOLVER_COMMON_INCLUDED__
#define __UNITTEST_RESOLVER_COMMON_INCLUDED__
 
#include <ip_resolver.hpp>
#include <string.h>
 
//  Attempt a resolution and test the results.
//
//  On windows we can receive an IPv4 address even when an IPv6 is requested, if
//  we're in this situation then we compare to 'expected_addr_v4_failover_'
//  instead.
void validate_address (int family,
                       const zmq::ip_addr_t *addr_,
                       const char *expected_addr_,
                       uint16_t expected_port_ = 0,
                       uint16_t expected_zone_ = 0,
                       const char *expected_addr_v4_failover_ = NULL)
{
#if defined ZMQ_HAVE_WINDOWS
    if (family == AF_INET6 && expected_addr_v4_failover_ != NULL
        && addr_->family () == AF_INET) {
        //  We've requested an IPv6 but the system gave us an IPv4, use the
        //  failover address
        family = AF_INET;
        expected_addr_ = expected_addr_v4_failover_;
    }
#else
    (void) expected_addr_v4_failover_;
#endif
 
    TEST_ASSERT_EQUAL (family, addr_->family ());
 
    if (family == AF_INET6) {
        struct in6_addr expected_addr;
        const sockaddr_in6 *ip6_addr = &addr_->ipv6;
 
        TEST_ASSERT_EQUAL (
          1, test_inet_pton (AF_INET6, expected_addr_, &expected_addr));
 
        int neq = memcmp (&ip6_addr->sin6_addr, &expected_addr,
                          sizeof (expected_addr_));
 
        TEST_ASSERT_EQUAL (0, neq);
        TEST_ASSERT_EQUAL (htons (expected_port_), ip6_addr->sin6_port);
        TEST_ASSERT_EQUAL (expected_zone_, ip6_addr->sin6_scope_id);
    } else {
        struct in_addr expected_addr;
        const sockaddr_in *ip4_addr = &addr_->ipv4;
 
        TEST_ASSERT_EQUAL (
          1, test_inet_pton (AF_INET, expected_addr_, &expected_addr));
 
        TEST_ASSERT_EQUAL (expected_addr.s_addr, ip4_addr->sin_addr.s_addr);
        TEST_ASSERT_EQUAL (htons (expected_port_), ip4_addr->sin_port);
    }
}
 
#endif // __UNITTEST_RESOLVER_COMMON_INCLUDED__