net_netdb_test_004.cpp

/*
 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "lt_net_netdb.h"

static int GetHostByAddrTest(void)
{
    char host_file[] = "127.0.0.1 localhost\n100.0.0.0 example.com example\n";
    char *pathList[] = {"/etc/hosts"};
    char *streamList[] = {host_file};
    int streamLen[] = {sizeof(host_file)};
    const int file_number = 1;
    int flag = PrepareFileEnv(pathList, streamList, streamLen, file_number);
    if (flag != 0) {
        RecoveryFileEnv(pathList, file_number);
        return -1;
    }

    struct in_addr ia;
    int length = 4; // the address length is 4;
    ia.s_addr = inet_addr("127.0.0.1");
    struct hostent *addr = gethostbyaddr(&ia, sizeof ia, AF_INET);
    ICUNIT_ASSERT_NOT_EQUAL(addr, NULL, -1);
    ICUNIT_ASSERT_EQUAL(addr->h_addrtype, AF_INET, addr->h_addrtype);
    ICUNIT_ASSERT_STRING_EQUAL(addr->h_name, "localhost", -1);
    ICUNIT_ASSERT_EQUAL(addr->h_length, length, -1);

    ia.s_addr = inet_addr("100.0.0.0");
    addr = gethostbyaddr(&ia, sizeof ia, AF_INET);
    ICUNIT_ASSERT_NOT_EQUAL(addr, NULL, -1);
    ICUNIT_ASSERT_EQUAL(addr->h_addrtype, AF_INET, addr->h_addrtype);
    ICUNIT_ASSERT_STRING_EQUAL(addr->h_name, "example.com", -1);

    errno = 0;
    ia.s_addr = inet_addr("127.0.0.0");
    addr = gethostbyaddr(&ia, sizeof ia, AF_INET);
    ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);

    RecoveryFileEnv(pathList, file_number);
    return ICUNIT_SUCCESS;
}

void NetNetDbTest004(void)
{
    TEST_ADD_CASE(__FUNCTION__, GetHostByAddrTest, TEST_POSIX, TEST_TCP, TEST_LEVEL0, TEST_FUNCTION);
}