tests/arpa_inet_test.cpp - android_bionic - Gitiles

 /*
  * Copyright (C) 2014 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 <sys/cdefs.h>

 #include <gtest/gtest.h>

 #include <arpa/inet.h>

 TEST(arpa_inet, inet_addr) {
   ASSERT_EQ((htonl)(0x7f000001), inet_addr("127.0.0.1"));
 }

 TEST(arpa_inet, inet_aton) {
   in_addr a;

   // a.b.c.d
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("127.1.2.3", &a));
   ASSERT_EQ((htonl)(0x7f010203), a.s_addr);

   // a.b.c
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("127.1.2", &a));
   ASSERT_EQ((htonl)(0x7f010002), a.s_addr);

   // a.b
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("127.1", &a));
   ASSERT_EQ((htonl)(0x7f000001), a.s_addr);

   // a
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("0x7f000001", &a));
   ASSERT_EQ((htonl)(0x7f000001), a.s_addr);

   // Hex (0x) and mixed-case hex digits.
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("0xFf.0.0.1", &a));
   ASSERT_EQ((htonl)(0xff000001), a.s_addr);

   // Hex (0X) and mixed-case hex digits.
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("0XfF.0.0.1", &a));
   ASSERT_EQ((htonl)(0xff000001), a.s_addr);

   // Octal.
   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("0177.0.0.1", &a));
   ASSERT_EQ((htonl)(0x7f000001), a.s_addr);

   a.s_addr = 0;
   ASSERT_EQ(1, inet_aton("036", &a));
   ASSERT_EQ((htonl)(036U), a.s_addr);
 }

 TEST(arpa_inet, inet_aton_nullptr) {
   ASSERT_EQ(0, inet_aton("", nullptr));
   ASSERT_EQ(1, inet_aton("127.0.0.1", nullptr));
 }

 TEST(arpa_inet, inet_aton_invalid) {
   ASSERT_EQ(0, inet_aton("", nullptr)); // Empty.
   ASSERT_EQ(0, inet_aton("x", nullptr)); // Leading junk.
   ASSERT_EQ(0, inet_aton("127.0.0.1x", nullptr)); // Trailing junk.
   ASSERT_EQ(0, inet_aton("09.0.0.1", nullptr)); // Invalid octal.
   ASSERT_EQ(0, inet_aton("0xg.0.0.1", nullptr)); // Invalid hex.

   ASSERT_EQ(0, inet_aton("1.2.3.4.5", nullptr)); // Too many dots.
   ASSERT_EQ(0, inet_aton("1.2.3.4.", nullptr)); // Trailing dot.

   // Out of range a.b.c.d form.
   ASSERT_EQ(0, inet_aton("999.0.0.1", nullptr));
   ASSERT_EQ(0, inet_aton("0.999.0.1", nullptr));
   ASSERT_EQ(0, inet_aton("0.0.999.1", nullptr));
   ASSERT_EQ(0, inet_aton("0.0.0.999", nullptr));

   // Out of range a.b.c form.
   ASSERT_EQ(0, inet_aton("256.0.0", nullptr));
   ASSERT_EQ(0, inet_aton("0.256.0", nullptr));
   ASSERT_EQ(0, inet_aton("0.0.0x10000", nullptr));

   // Out of range a.b form.
   ASSERT_EQ(0, inet_aton("256.0", nullptr));
   ASSERT_EQ(0, inet_aton("0.0x1000000", nullptr));

   // Out of range a form.
   ASSERT_EQ(0, inet_aton("0x100000000", nullptr));

   // 64-bit overflow.
   ASSERT_EQ(0, inet_aton("0x10000000000000000", nullptr));

   // Out of range octal.
   ASSERT_EQ(0, inet_aton("0400.0.0.1", nullptr));
 }

 TEST(arpa_inet, inet_lnaof) {
   in_addr a = { htonl(0x12345678) };
   ASSERT_EQ(0x00345678U, inet_lnaof(a));
 }

 TEST(arpa_inet, inet_makeaddr) {
   in_addr a = inet_makeaddr(0x12U, 0x345678);
   ASSERT_EQ((htonl)(0x12345678), a.s_addr);
 }

 TEST(arpa_inet, inet_netof) {
   in_addr a = { htonl(0x12345678) };
   ASSERT_EQ(0x12U, inet_netof(a));
 }

 TEST(arpa_inet, inet_network) {
   ASSERT_EQ(0x7f000001U, inet_network("127.0.0.1"));
   ASSERT_EQ(0x7fU, inet_network("0x7f"));
   ASSERT_EQ(~0U, inet_network(""));
 }

 TEST(arpa_inet, inet_ntoa) {
   in_addr a = { (htonl)(0x7f000001) };
   ASSERT_STREQ("127.0.0.1", inet_ntoa(a));
 }

 TEST(arpa_inet, inet_pton__inet_ntop) {
   sockaddr_storage ss;
   ASSERT_EQ(1, inet_pton(AF_INET, "127.0.0.1", &ss));

   char s[INET_ADDRSTRLEN];
   ASSERT_STREQ("127.0.0.1", inet_ntop(AF_INET, &ss, s, INET_ADDRSTRLEN));
 }

 TEST(arpa_inet, inet_ntop_overflow) {
   // OpenBSD's inet_ntop had a bug where passing a 'size' larger than INET_ADDRSTRLEN
   // for AF_INET or INET6_ADDRSTRLEN for AF_INET6 would cause inet_ntop to overflow an
   // internal buffer.

   sockaddr_storage ss4;
   ASSERT_EQ(1, inet_pton(AF_INET, "127.0.0.1", &ss4));

   sockaddr_storage ss6;
   ASSERT_EQ(1, inet_pton(AF_INET6, "::1", &ss6));

   char s4[INET_ADDRSTRLEN];
   char s6[INET6_ADDRSTRLEN];
   ASSERT_STREQ("127.0.0.1", inet_ntop(AF_INET, &ss4, s4, INET_ADDRSTRLEN));
   ASSERT_STREQ("127.0.0.1", inet_ntop(AF_INET, &ss4, s4, 2*INET_ADDRSTRLEN));
   ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, INET_ADDRSTRLEN));
   ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, INET6_ADDRSTRLEN));
   ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, 2*INET6_ADDRSTRLEN));
 }

 TEST(arpa_inet, inet_nsap_addr) {
 #if !defined(ANDROID_HOST_MUSL)
   // inet_nsap_addr() doesn't seem to be documented anywhere, but it's basically
   // text to binary for arbitrarily-long strings like "0xdeadbeef". Any
   // '.', '+', or '/' characters are ignored as punctuation. The return value is
   // the length in bytes, or 0 for all errors.
   u_char buf[32];

   // Missing "0x" prefix.
   ASSERT_EQ(0U, inet_nsap_addr("123", buf, sizeof(buf)));
   ASSERT_EQ(0U, inet_nsap_addr("012", buf, sizeof(buf)));

   // 1 byte.
   ASSERT_EQ(1U, inet_nsap_addr("0x12", buf, sizeof(buf)));
   ASSERT_EQ(0x12, buf[0]);

   // 10 bytes.
   ASSERT_EQ(10U, inet_nsap_addr("0x1234567890abcdef0011", buf, sizeof(buf)));
   ASSERT_EQ(0x12, buf[0]);
   ASSERT_EQ(0x34, buf[1]);
   ASSERT_EQ(0x56, buf[2]);
   ASSERT_EQ(0x78, buf[3]);
   ASSERT_EQ(0x90, buf[4]);
   ASSERT_EQ(0xab, buf[5]);
   ASSERT_EQ(0xcd, buf[6]);
   ASSERT_EQ(0xef, buf[7]);
   ASSERT_EQ(0x00, buf[8]);
   ASSERT_EQ(0x11, buf[9]);

   // Ignored punctuation.
   ASSERT_EQ(10U, inet_nsap_addr("0x1122.3344+5566/7788/99aa", buf, sizeof(buf)));
   ASSERT_EQ(0x11, buf[0]);
   ASSERT_EQ(0x22, buf[1]);
   ASSERT_EQ(0x33, buf[2]);
   ASSERT_EQ(0x44, buf[3]);
   ASSERT_EQ(0x55, buf[4]);
   ASSERT_EQ(0x66, buf[5]);
   ASSERT_EQ(0x77, buf[6]);
   ASSERT_EQ(0x88, buf[7]);
   ASSERT_EQ(0x99, buf[8]);
   ASSERT_EQ(0xaa, buf[9]);

   // Truncated.
   ASSERT_EQ(4U, inet_nsap_addr("0xdeadbeef666666666666", buf, 4));
   // Overwritten...
   ASSERT_EQ(0xde, buf[0]);
   ASSERT_EQ(0xad, buf[1]);
   ASSERT_EQ(0xbe, buf[2]);
   ASSERT_EQ(0xef, buf[3]);
   // Same as before...
   ASSERT_EQ(0x55, buf[4]);
   ASSERT_EQ(0x66, buf[5]);
   ASSERT_EQ(0x77, buf[6]);
   ASSERT_EQ(0x88, buf[7]);
   ASSERT_EQ(0x99, buf[8]);
   ASSERT_EQ(0xaa, buf[9]);

   // Case insensitivity.
   ASSERT_EQ(6U, inet_nsap_addr("0xaAbBcCdDeEfF", buf, 6));
   ASSERT_EQ(0xaa, buf[0]);
   ASSERT_EQ(0xbb, buf[1]);
   ASSERT_EQ(0xcc, buf[2]);
   ASSERT_EQ(0xdd, buf[3]);
   ASSERT_EQ(0xee, buf[4]);
   ASSERT_EQ(0xff, buf[5]);

   // Punctuation isn't allowed within a byte.
   ASSERT_EQ(0U, inet_nsap_addr("0x1.122", buf, sizeof(buf)));
   // Invalid punctuation.
   ASSERT_EQ(0U, inet_nsap_addr("0x11,22", buf, sizeof(buf)));
   // Invalid hex digit.
   ASSERT_EQ(0U, inet_nsap_addr("0x11.g2", buf, sizeof(buf)));
   ASSERT_EQ(0U, inet_nsap_addr("0x11.2g", buf, sizeof(buf)));
   // Invalid half-byte.
   ASSERT_EQ(0U, inet_nsap_addr("0x11.2", buf, sizeof(buf)));
 #else
   GTEST_SKIP() << "musl doesn't have inet_nsap_addr";
 #endif
 }

 TEST(arpa_inet, inet_nsap_ntoa) {
 #if !defined(ANDROID_HOST_MUSL)
   // inet_nsap_ntoa() doesn't seem to be documented anywhere, but it's basically
   // binary to text for arbitrarily-long byte buffers.
   // The return value is a pointer to the buffer. No errors are possible.
   const unsigned char bytes[] = {0x01, 0x00, 0x02, 0x0e, 0xf0, 0x20};
   char dst[32];
   ASSERT_EQ(dst, inet_nsap_ntoa(6, bytes, dst));
   ASSERT_STREQ(dst, "0x01.0002.0EF0.20");
 #else
   GTEST_SKIP() << "musl doesn't have inet_nsap_ntoa";
 #endif
 }

 TEST(arpa_inet, inet_nsap_ntoa__nullptr) {
 #if !defined(ANDROID_HOST_MUSL)
   // If you don't provide a destination, a static buffer is provided for you.
   const unsigned char bytes[] = {0x01, 0x00, 0x02, 0x0e, 0xf0, 0x20};
   ASSERT_STREQ("0x01.0002.0EF0.20", inet_nsap_ntoa(6, bytes, nullptr));
 #else
   GTEST_SKIP() << "musl doesn't have inet_nsap_ntoa";
 #endif
 }
	/*
	* Copyright (C) 2014 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 <sys/cdefs.h>

	#include <gtest/gtest.h>

	#include <arpa/inet.h>

	TEST(arpa_inet, inet_addr) {
	ASSERT_EQ((htonl)(0x7f000001), inet_addr("127.0.0.1"));
	}

	TEST(arpa_inet, inet_aton) {
	in_addr a;

	// a.b.c.d
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("127.1.2.3", &a));
	ASSERT_EQ((htonl)(0x7f010203), a.s_addr);

	// a.b.c
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("127.1.2", &a));
	ASSERT_EQ((htonl)(0x7f010002), a.s_addr);

	// a.b
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("127.1", &a));
	ASSERT_EQ((htonl)(0x7f000001), a.s_addr);

	// a
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("0x7f000001", &a));
	ASSERT_EQ((htonl)(0x7f000001), a.s_addr);

	// Hex (0x) and mixed-case hex digits.
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("0xFf.0.0.1", &a));
	ASSERT_EQ((htonl)(0xff000001), a.s_addr);

	// Hex (0X) and mixed-case hex digits.
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("0XfF.0.0.1", &a));
	ASSERT_EQ((htonl)(0xff000001), a.s_addr);

	// Octal.
	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("0177.0.0.1", &a));
	ASSERT_EQ((htonl)(0x7f000001), a.s_addr);

	a.s_addr = 0;
	ASSERT_EQ(1, inet_aton("036", &a));
	ASSERT_EQ((htonl)(036U), a.s_addr);
	}

	TEST(arpa_inet, inet_aton_nullptr) {
	ASSERT_EQ(0, inet_aton("", nullptr));
	ASSERT_EQ(1, inet_aton("127.0.0.1", nullptr));
	}

	TEST(arpa_inet, inet_aton_invalid) {
	ASSERT_EQ(0, inet_aton("", nullptr)); // Empty.
	ASSERT_EQ(0, inet_aton("x", nullptr)); // Leading junk.
	ASSERT_EQ(0, inet_aton("127.0.0.1x", nullptr)); // Trailing junk.
	ASSERT_EQ(0, inet_aton("09.0.0.1", nullptr)); // Invalid octal.
	ASSERT_EQ(0, inet_aton("0xg.0.0.1", nullptr)); // Invalid hex.

	ASSERT_EQ(0, inet_aton("1.2.3.4.5", nullptr)); // Too many dots.
	ASSERT_EQ(0, inet_aton("1.2.3.4.", nullptr)); // Trailing dot.

	// Out of range a.b.c.d form.
	ASSERT_EQ(0, inet_aton("999.0.0.1", nullptr));
	ASSERT_EQ(0, inet_aton("0.999.0.1", nullptr));
	ASSERT_EQ(0, inet_aton("0.0.999.1", nullptr));
	ASSERT_EQ(0, inet_aton("0.0.0.999", nullptr));

	// Out of range a.b.c form.
	ASSERT_EQ(0, inet_aton("256.0.0", nullptr));
	ASSERT_EQ(0, inet_aton("0.256.0", nullptr));
	ASSERT_EQ(0, inet_aton("0.0.0x10000", nullptr));

	// Out of range a.b form.
	ASSERT_EQ(0, inet_aton("256.0", nullptr));
	ASSERT_EQ(0, inet_aton("0.0x1000000", nullptr));

	// Out of range a form.
	ASSERT_EQ(0, inet_aton("0x100000000", nullptr));

	// 64-bit overflow.
	ASSERT_EQ(0, inet_aton("0x10000000000000000", nullptr));

	// Out of range octal.
	ASSERT_EQ(0, inet_aton("0400.0.0.1", nullptr));
	}

	TEST(arpa_inet, inet_lnaof) {
	in_addr a = { htonl(0x12345678) };
	ASSERT_EQ(0x00345678U, inet_lnaof(a));
	}

	TEST(arpa_inet, inet_makeaddr) {
	in_addr a = inet_makeaddr(0x12U, 0x345678);
	ASSERT_EQ((htonl)(0x12345678), a.s_addr);
	}

	TEST(arpa_inet, inet_netof) {
	in_addr a = { htonl(0x12345678) };
	ASSERT_EQ(0x12U, inet_netof(a));
	}

	TEST(arpa_inet, inet_network) {
	ASSERT_EQ(0x7f000001U, inet_network("127.0.0.1"));
	ASSERT_EQ(0x7fU, inet_network("0x7f"));
	ASSERT_EQ(~0U, inet_network(""));
	}

	TEST(arpa_inet, inet_ntoa) {
	in_addr a = { (htonl)(0x7f000001) };
	ASSERT_STREQ("127.0.0.1", inet_ntoa(a));
	}

	TEST(arpa_inet, inet_pton__inet_ntop) {
	sockaddr_storage ss;
	ASSERT_EQ(1, inet_pton(AF_INET, "127.0.0.1", &ss));

	char s[INET_ADDRSTRLEN];
	ASSERT_STREQ("127.0.0.1", inet_ntop(AF_INET, &ss, s, INET_ADDRSTRLEN));
	}

	TEST(arpa_inet, inet_ntop_overflow) {
	// OpenBSD's inet_ntop had a bug where passing a 'size' larger than INET_ADDRSTRLEN
	// for AF_INET or INET6_ADDRSTRLEN for AF_INET6 would cause inet_ntop to overflow an
	// internal buffer.

	sockaddr_storage ss4;
	ASSERT_EQ(1, inet_pton(AF_INET, "127.0.0.1", &ss4));

	sockaddr_storage ss6;
	ASSERT_EQ(1, inet_pton(AF_INET6, "::1", &ss6));

	char s4[INET_ADDRSTRLEN];
	char s6[INET6_ADDRSTRLEN];
	ASSERT_STREQ("127.0.0.1", inet_ntop(AF_INET, &ss4, s4, INET_ADDRSTRLEN));
	ASSERT_STREQ("127.0.0.1", inet_ntop(AF_INET, &ss4, s4, 2*INET_ADDRSTRLEN));
	ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, INET_ADDRSTRLEN));
	ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, INET6_ADDRSTRLEN));
	ASSERT_STREQ("::1", inet_ntop(AF_INET6, &ss6, s6, 2*INET6_ADDRSTRLEN));
	}

	TEST(arpa_inet, inet_nsap_addr) {
	#if !defined(ANDROID_HOST_MUSL)
	// inet_nsap_addr() doesn't seem to be documented anywhere, but it's basically
	// text to binary for arbitrarily-long strings like "0xdeadbeef". Any
	// '.', '+', or '/' characters are ignored as punctuation. The return value is
	// the length in bytes, or 0 for all errors.
	u_char buf[32];

	// Missing "0x" prefix.
	ASSERT_EQ(0U, inet_nsap_addr("123", buf, sizeof(buf)));
	ASSERT_EQ(0U, inet_nsap_addr("012", buf, sizeof(buf)));

	// 1 byte.
	ASSERT_EQ(1U, inet_nsap_addr("0x12", buf, sizeof(buf)));
	ASSERT_EQ(0x12, buf[0]);

	// 10 bytes.
	ASSERT_EQ(10U, inet_nsap_addr("0x1234567890abcdef0011", buf, sizeof(buf)));
	ASSERT_EQ(0x12, buf[0]);
	ASSERT_EQ(0x34, buf[1]);
	ASSERT_EQ(0x56, buf[2]);
	ASSERT_EQ(0x78, buf[3]);
	ASSERT_EQ(0x90, buf[4]);
	ASSERT_EQ(0xab, buf[5]);
	ASSERT_EQ(0xcd, buf[6]);
	ASSERT_EQ(0xef, buf[7]);
	ASSERT_EQ(0x00, buf[8]);
	ASSERT_EQ(0x11, buf[9]);

	// Ignored punctuation.
	ASSERT_EQ(10U, inet_nsap_addr("0x1122.3344+5566/7788/99aa", buf, sizeof(buf)));
	ASSERT_EQ(0x11, buf[0]);
	ASSERT_EQ(0x22, buf[1]);
	ASSERT_EQ(0x33, buf[2]);
	ASSERT_EQ(0x44, buf[3]);
	ASSERT_EQ(0x55, buf[4]);
	ASSERT_EQ(0x66, buf[5]);
	ASSERT_EQ(0x77, buf[6]);
	ASSERT_EQ(0x88, buf[7]);
	ASSERT_EQ(0x99, buf[8]);
	ASSERT_EQ(0xaa, buf[9]);

	// Truncated.
	ASSERT_EQ(4U, inet_nsap_addr("0xdeadbeef666666666666", buf, 4));
	// Overwritten...
	ASSERT_EQ(0xde, buf[0]);
	ASSERT_EQ(0xad, buf[1]);
	ASSERT_EQ(0xbe, buf[2]);
	ASSERT_EQ(0xef, buf[3]);
	// Same as before...
	ASSERT_EQ(0x55, buf[4]);
	ASSERT_EQ(0x66, buf[5]);
	ASSERT_EQ(0x77, buf[6]);
	ASSERT_EQ(0x88, buf[7]);
	ASSERT_EQ(0x99, buf[8]);
	ASSERT_EQ(0xaa, buf[9]);

	// Case insensitivity.
	ASSERT_EQ(6U, inet_nsap_addr("0xaAbBcCdDeEfF", buf, 6));
	ASSERT_EQ(0xaa, buf[0]);
	ASSERT_EQ(0xbb, buf[1]);
	ASSERT_EQ(0xcc, buf[2]);
	ASSERT_EQ(0xdd, buf[3]);
	ASSERT_EQ(0xee, buf[4]);
	ASSERT_EQ(0xff, buf[5]);

	// Punctuation isn't allowed within a byte.
	ASSERT_EQ(0U, inet_nsap_addr("0x1.122", buf, sizeof(buf)));
	// Invalid punctuation.
	ASSERT_EQ(0U, inet_nsap_addr("0x11,22", buf, sizeof(buf)));
	// Invalid hex digit.
	ASSERT_EQ(0U, inet_nsap_addr("0x11.g2", buf, sizeof(buf)));
	ASSERT_EQ(0U, inet_nsap_addr("0x11.2g", buf, sizeof(buf)));
	// Invalid half-byte.
	ASSERT_EQ(0U, inet_nsap_addr("0x11.2", buf, sizeof(buf)));
	#else
	GTEST_SKIP() << "musl doesn't have inet_nsap_addr";
	#endif
	}

	TEST(arpa_inet, inet_nsap_ntoa) {
	#if !defined(ANDROID_HOST_MUSL)
	// inet_nsap_ntoa() doesn't seem to be documented anywhere, but it's basically
	// binary to text for arbitrarily-long byte buffers.
	// The return value is a pointer to the buffer. No errors are possible.
	const unsigned char bytes[] = {0x01, 0x00, 0x02, 0x0e, 0xf0, 0x20};
	char dst[32];
	ASSERT_EQ(dst, inet_nsap_ntoa(6, bytes, dst));
	ASSERT_STREQ(dst, "0x01.0002.0EF0.20");
	#else
	GTEST_SKIP() << "musl doesn't have inet_nsap_ntoa";
	#endif
	}

	TEST(arpa_inet, inet_nsap_ntoa__nullptr) {
	#if !defined(ANDROID_HOST_MUSL)
	// If you don't provide a destination, a static buffer is provided for you.
	const unsigned char bytes[] = {0x01, 0x00, 0x02, 0x0e, 0xf0, 0x20};
	ASSERT_STREQ("0x01.0002.0EF0.20", inet_nsap_ntoa(6, bytes, nullptr));
	#else
	GTEST_SKIP() << "musl doesn't have inet_nsap_ntoa";
	#endif
	}