tests/netdb_test.cpp

/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <gtest/gtest.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>

TEST(netdb, getaddrinfo_NULL_hints) {
  addrinfo* ai = NULL;
  ASSERT_EQ(0, getaddrinfo("localhost", "9999", NULL, &ai));
  freeaddrinfo(ai);
}

TEST(netdb, getnameinfo_salen) {
  sockaddr_storage ss;
  memset(&ss, 0, sizeof(ss));
  sockaddr* sa = reinterpret_cast<sockaddr*>(&ss);
  char tmp[16];

  ss.ss_family = AF_INET;
  socklen_t too_much = sizeof(ss);
  socklen_t just_right = sizeof(sockaddr_in);
  socklen_t too_little = sizeof(sockaddr_in) - 1;

  ASSERT_EQ(0, getnameinfo(sa, too_much, tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST));
  ASSERT_STREQ("0.0.0.0", tmp);
  ASSERT_EQ(0, getnameinfo(sa, just_right, tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST));
  ASSERT_STREQ("0.0.0.0", tmp);
  ASSERT_EQ(EAI_FAMILY, getnameinfo(sa, too_little, tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST));

  ss.ss_family = AF_INET6;
  just_right = sizeof(sockaddr_in6);
  too_little = sizeof(sockaddr_in6) - 1;
  too_much = just_right + 1;

  ASSERT_EQ(0, getnameinfo(sa, too_much, tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST));
  ASSERT_STREQ("::", tmp);
  ASSERT_EQ(0, getnameinfo(sa, just_right, tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST));
  ASSERT_STREQ("::", tmp);
  ASSERT_EQ(EAI_FAMILY, getnameinfo(sa, too_little, tmp, sizeof(tmp), NULL, 0, NI_NUMERICHOST));
}

TEST(netdb, gethostbyname) {
  hostent* hent = gethostbyname("localhost");
  ASSERT_TRUE(hent != NULL);
  ASSERT_EQ(hent->h_addrtype, AF_INET);
  ASSERT_EQ(hent->h_addr[0], 127);
  ASSERT_EQ(hent->h_addr[1], 0);
  ASSERT_EQ(hent->h_addr[2], 0);
  ASSERT_EQ(hent->h_addr[3], 1);
}