folly/test/SocketAddressTest.cpp

   1 /*
   2  * Copyright 2014 Facebook, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *   http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <folly/SocketAddress.h>
  18
  19 #include <gtest/gtest.h>
  20 #include <iostream>
  21 #include <sstream>
  22
  23 using namespace boost;
  24 using std::string;
  25 using std::cerr;
  26 using std::endl;
  27 using folly::SocketAddress;
  28
  29 TEST(SocketAddress, Size) {
  30   SocketAddress addr;
  31   EXPECT_EQ(sizeof(addr), 32);
  32 }
  33
  34 TEST(SocketAddress, ConstructFromIpv4) {
  35   SocketAddress addr("1.2.3.4", 4321);
  36   EXPECT_EQ(addr.getFamily(), AF_INET);
  37   EXPECT_EQ(addr.getAddressStr(), "1.2.3.4");
  38   EXPECT_EQ(addr.getPort(), 4321);
  39   sockaddr_storage addrStorage;
  40   addr.getAddress(&addrStorage);
  41   const sockaddr_in* inaddr = reinterpret_cast<sockaddr_in*>(&addrStorage);
  42   EXPECT_EQ(inaddr->sin_addr.s_addr, htonl(0x01020304));
  43   EXPECT_EQ(inaddr->sin_port, htons(4321));
  44 }
  45
  46 TEST(SocketAddress, IPv4ToStringConversion) {
  47   // testing addresses *.5.5.5, 5.*.5.5, 5.5.*.5, 5.5.5.*
  48   SocketAddress addr;
  49   for (int pos = 0; pos < 4; ++pos) {
  50     for (int i = 0; i < 256; ++i) {
  51       int fragments[] = {5,5,5,5};
  52       fragments[pos] = i;
  53       std::ostringstream ss;
  54       ss << fragments[0] << "." << fragments[1] << "."
  55          << fragments[2] << "." << fragments[3];
  56       string ipString = ss.str();
  57       addr.setFromIpPort(ipString, 1234);
  58       EXPECT_EQ(addr.getAddressStr(), ipString);
  59     }
  60   }
  61 }
  62
  63 TEST(SocketAddress, SetFromIpv4) {
  64   SocketAddress addr;
  65   addr.setFromIpPort("255.254.253.252", 8888);
  66   EXPECT_EQ(addr.getFamily(), AF_INET);
  67   EXPECT_EQ(addr.getAddressStr(), "255.254.253.252");
  68   EXPECT_EQ(addr.getPort(), 8888);
  69   sockaddr_storage addrStorage;
  70   addr.getAddress(&addrStorage);
  71   const sockaddr_in* inaddr = reinterpret_cast<sockaddr_in*>(&addrStorage);
  72   EXPECT_EQ(inaddr->sin_addr.s_addr, htonl(0xfffefdfc));
  73   EXPECT_EQ(inaddr->sin_port, htons(8888));
  74 }
  75
  76 TEST(SocketAddress, ConstructFromInvalidIpv4) {
  77   EXPECT_THROW(SocketAddress("1.2.3.256", 1234), std::runtime_error);
  78 }
  79
  80 TEST(SocketAddress, SetFromInvalidIpv4) {
  81   SocketAddress addr("12.34.56.78", 80);
  82
  83   // Try setting to an invalid value
  84   // Since setFromIpPort() shouldn't allow hostname lookups, setting to
  85   // "localhost" should fail, even if localhost is resolvable
  86   EXPECT_THROW(addr.setFromIpPort("localhost", 1234),
  87                std::runtime_error);
  88
  89   // Make sure the address still has the old contents
  90   EXPECT_EQ(addr.getFamily(), AF_INET);
  91   EXPECT_EQ(addr.getAddressStr(), "12.34.56.78");
  92   EXPECT_EQ(addr.getPort(), 80);
  93   sockaddr_storage addrStorage;
  94   addr.getAddress(&addrStorage);
  95   const sockaddr_in* inaddr = reinterpret_cast<sockaddr_in*>(&addrStorage);
  96   EXPECT_EQ(inaddr->sin_addr.s_addr, htonl(0x0c22384e));
  97 }
  98
  99 TEST(SocketAddress, SetFromHostname) {
 100   // hopefully "localhost" is resolvable on any system that will run the tests
 101   EXPECT_THROW(SocketAddress("localhost", 80), std::runtime_error);
 102   SocketAddress addr("localhost", 80, true);
 103
 104   SocketAddress addr2;
 105   EXPECT_THROW(addr2.setFromIpPort("localhost", 0), std::runtime_error);
 106   addr2.setFromHostPort("localhost", 0);
 107 }
 108
 109 TEST(SocketAddress, SetFromStrings) {
 110   SocketAddress addr;
 111
 112   // Set from a numeric port string
 113   addr.setFromLocalPort("1234");
 114   EXPECT_EQ(addr.getPort(), 1234);
 115
 116   // setFromLocalPort() should not accept service names
 117   EXPECT_THROW(addr.setFromLocalPort("http"), std::runtime_error);
 118
 119   // Call setFromLocalIpPort() with just a port, no IP
 120   addr.setFromLocalIpPort("80");
 121   EXPECT_EQ(addr.getPort(), 80);
 122
 123   // Call setFromLocalIpPort() with an IP and port.
 124   addr.setFromLocalIpPort("127.0.0.1:4321");
 125   EXPECT_EQ(addr.getAddressStr(), "127.0.0.1");
 126   EXPECT_EQ(addr.getPort(), 4321);
 127
 128   // setFromIpPort() without an address should fail
 129   EXPECT_THROW(addr.setFromIpPort("4321"), std::invalid_argument);
 130
 131   // Call setFromIpPort() with an IPv6 address and port
 132   addr.setFromIpPort("2620:0:1cfe:face:b00c::3:65535");
 133   EXPECT_EQ(addr.getFamily(), AF_INET6);
 134   EXPECT_EQ(addr.getAddressStr(), "2620:0:1cfe:face:b00c::3");
 135   EXPECT_EQ(addr.getPort(), 65535);
 136
 137   // Call setFromIpPort() with an IPv4 address and port
 138   addr.setFromIpPort("1.2.3.4:9999");
 139   EXPECT_EQ(addr.getFamily(), AF_INET);
 140   EXPECT_EQ(addr.getAddressStr(), "1.2.3.4");
 141   EXPECT_EQ(addr.getPort(), 9999);
 142 }
 143
 144 TEST(SocketAddress, EqualityAndHash) {
 145   // IPv4
 146   SocketAddress local1("127.0.0.1", 1234);
 147   EXPECT_EQ(local1, local1);
 148   EXPECT_EQ(local1.hash(), local1.hash());
 149
 150   SocketAddress local2("127.0.0.1", 1234);
 151   EXPECT_EQ(local1, local2);
 152   EXPECT_EQ(local1.hash(), local2.hash());
 153
 154   SocketAddress local3("127.0.0.1", 4321);
 155   EXPECT_NE(local1, local3);
 156   EXPECT_NE(local1.hash(), local3.hash());
 157
 158   SocketAddress other1("1.2.3.4", 1234);
 159   EXPECT_EQ(other1, other1);
 160   EXPECT_EQ(other1.hash(), other1.hash());
 161   EXPECT_NE(local1, other1);
 162   EXPECT_NE(local1.hash(), other1.hash());
 163
 164   SocketAddress other2("4.3.2.1", 1234);
 165   EXPECT_NE(other1.hash(), other2.hash());
 166   EXPECT_NE(other1.hash(), other2.hash());
 167
 168   other2.setFromIpPort("1.2.3.4", 0);
 169   EXPECT_NE(other1.hash(), other2.hash());
 170   EXPECT_NE(other1.hash(), other2.hash());
 171   other2.setPort(1234);
 172   EXPECT_EQ(other1.hash(), other2.hash());
 173   EXPECT_EQ(other1.hash(), other2.hash());
 174
 175   // IPv6
 176   SocketAddress v6_1("2620:0:1c00:face:b00c:0:0:abcd", 1234);
 177   SocketAddress v6_2("2620:0:1c00:face:b00c::abcd", 1234);
 178   SocketAddress v6_3("2620:0:1c00:face:b00c::bcda", 1234);
 179   EXPECT_EQ(v6_1, v6_2);
 180   EXPECT_EQ(v6_1.hash(), v6_2.hash());
 181   EXPECT_NE(v6_1, v6_3);
 182   EXPECT_NE(v6_1.hash(), v6_3.hash());
 183
 184   // IPv4 versus IPv6 comparison
 185   SocketAddress localIPv6("::1", 1234);
 186   // Even though these both refer to localhost,
 187   // IPv4 and IPv6 addresses are never treated as the same address
 188   EXPECT_NE(local1, localIPv6);
 189   EXPECT_NE(local1.hash(), localIPv6.hash());
 190
 191   // IPv4-mapped IPv6 addresses are not treated as equal
 192   // to the equivalent IPv4 address
 193   SocketAddress v4("10.0.0.3", 99);
 194   SocketAddress v6_mapped1("::ffff:10.0.0.3", 99);
 195   SocketAddress v6_mapped2("::ffff:0a00:0003", 99);
 196   EXPECT_NE(v4, v6_mapped1);
 197   EXPECT_NE(v4, v6_mapped2);
 198   EXPECT_EQ(v6_mapped1, v6_mapped2);
 199
 200   // However, after calling convertToIPv4(), the mapped address should now be
 201   // equal to the v4 version.
 202   EXPECT_TRUE(v6_mapped1.isIPv4Mapped());
 203   v6_mapped1.convertToIPv4();
 204   EXPECT_EQ(v6_mapped1, v4);
 205   EXPECT_NE(v6_mapped1, v6_mapped2);
 206
 207   // Unix
 208   SocketAddress unix1;
 209   unix1.setFromPath("/foo");
 210   SocketAddress unix2;
 211   unix2.setFromPath("/foo");
 212   SocketAddress unix3;
 213   unix3.setFromPath("/bar");
 214   SocketAddress unixAnon;
 215   unixAnon.setFromPath("");
 216
 217   EXPECT_EQ(unix1, unix2);
 218   EXPECT_EQ(unix1.hash(), unix2.hash());
 219   EXPECT_NE(unix1, unix3);
 220   EXPECT_NE(unix1, unixAnon);
 221   EXPECT_NE(unix2, unix3);
 222   EXPECT_NE(unix2, unixAnon);
 223   // anonymous addresses aren't equal to any other address,
 224   // including themselves
 225   EXPECT_NE(unixAnon, unixAnon);
 226
 227   // It isn't strictly required that hashes for different addresses be
 228   // different, but we should have very few collisions.  It generally indicates
 229   // a problem if these collide
 230   EXPECT_NE(unix1.hash(), unix3.hash());
 231   EXPECT_NE(unix1.hash(), unixAnon.hash());
 232   EXPECT_NE(unix3.hash(), unixAnon.hash());
 233 }
 234
 235 TEST(SocketAddress, IsPrivate) {
 236   // IPv4
 237   SocketAddress addr("9.255.255.255", 0);
 238   EXPECT_TRUE(!addr.isPrivateAddress());
 239   addr.setFromIpPort("10.0.0.0", 0);
 240   EXPECT_TRUE(addr.isPrivateAddress());
 241   addr.setFromIpPort("10.255.255.255", 0);
 242   EXPECT_TRUE(addr.isPrivateAddress());
 243   addr.setFromIpPort("11.0.0.0", 0);
 244   EXPECT_TRUE(!addr.isPrivateAddress());
 245
 246   addr.setFromIpPort("172.15.255.255", 0);
 247   EXPECT_TRUE(!addr.isPrivateAddress());
 248   addr.setFromIpPort("172.16.0.0", 0);
 249   EXPECT_TRUE(addr.isPrivateAddress());
 250   addr.setFromIpPort("172.31.255.255", 0);
 251   EXPECT_TRUE(addr.isPrivateAddress());
 252   addr.setFromIpPort("172.32.0.0", 0);
 253   EXPECT_TRUE(!addr.isPrivateAddress());
 254
 255   addr.setFromIpPort("192.167.255.255", 0);
 256   EXPECT_TRUE(!addr.isPrivateAddress());
 257   addr.setFromIpPort("192.168.0.0", 0);
 258   EXPECT_TRUE(addr.isPrivateAddress());
 259   addr.setFromIpPort("192.168.255.255", 0);
 260   EXPECT_TRUE(addr.isPrivateAddress());
 261   addr.setFromIpPort("192.169.0.0", 0);
 262   EXPECT_TRUE(!addr.isPrivateAddress());
 263
 264   addr.setFromIpPort("126.255.255.255", 0);
 265   EXPECT_TRUE(!addr.isPrivateAddress());
 266   addr.setFromIpPort("127.0.0.0", 0);
 267   EXPECT_TRUE(addr.isPrivateAddress());
 268   addr.setFromIpPort("127.0.0.1", 0);
 269   EXPECT_TRUE(addr.isPrivateAddress());
 270   addr.setFromIpPort("127.255.255.255", 0);
 271   EXPECT_TRUE(addr.isPrivateAddress());
 272   addr.setFromIpPort("128.0.0.0", 0);
 273   EXPECT_TRUE(!addr.isPrivateAddress());
 274
 275   addr.setFromIpPort("1.2.3.4", 0);
 276   EXPECT_TRUE(!addr.isPrivateAddress());
 277   addr.setFromIpPort("69.171.239.10", 0);
 278   EXPECT_TRUE(!addr.isPrivateAddress());
 279
 280   // IPv6
 281   addr.setFromIpPort("fbff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 0);
 282   EXPECT_TRUE(!addr.isPrivateAddress());
 283   addr.setFromIpPort("fc00::", 0);
 284   EXPECT_TRUE(addr.isPrivateAddress());
 285   addr.setFromIpPort("fdff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 0);
 286   EXPECT_TRUE(addr.isPrivateAddress());
 287   addr.setFromIpPort("fe00::", 0);
 288   EXPECT_TRUE(!addr.isPrivateAddress());
 289
 290   addr.setFromIpPort("fe7f:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 0);
 291   EXPECT_TRUE(!addr.isPrivateAddress());
 292   addr.setFromIpPort("fe80::", 0);
 293   EXPECT_TRUE(addr.isPrivateAddress());
 294   addr.setFromIpPort("fe80::ffff:ffff:ffff:ffff", 0);
 295   EXPECT_TRUE(addr.isPrivateAddress());
 296   addr.setFromIpPort("febf:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 0);
 297   EXPECT_TRUE(addr.isPrivateAddress());
 298   addr.setFromIpPort("fec0::", 0);
 299   EXPECT_TRUE(!addr.isPrivateAddress());
 300
 301   addr.setFromIpPort("::0", 0);
 302   EXPECT_TRUE(!addr.isPrivateAddress());
 303   addr.setFromIpPort("2620:0:1c00:face:b00c:0:0:abcd", 0);
 304   EXPECT_TRUE(!addr.isPrivateAddress());
 305
 306   // IPv4-mapped IPv6
 307   addr.setFromIpPort("::ffff:127.0.0.1", 0);
 308   EXPECT_TRUE(addr.isPrivateAddress());
 309   addr.setFromIpPort("::ffff:10.1.2.3", 0);
 310   EXPECT_TRUE(addr.isPrivateAddress());
 311   addr.setFromIpPort("::ffff:172.24.0.115", 0);
 312   EXPECT_TRUE(addr.isPrivateAddress());
 313   addr.setFromIpPort("::ffff:192.168.0.1", 0);
 314   EXPECT_TRUE(addr.isPrivateAddress());
 315   addr.setFromIpPort("::ffff:69.171.239.10", 0);
 316   EXPECT_TRUE(!addr.isPrivateAddress());
 317
 318   // Unix sockets are considered private addresses
 319   addr.setFromPath("/tmp/mysock");
 320   EXPECT_TRUE(addr.isPrivateAddress());
 321 }
 322
 323 TEST(SocketAddress, IsLoopback) {
 324   // IPv4
 325   SocketAddress addr("127.0.0.1", 0);
 326   EXPECT_TRUE(addr.isLoopbackAddress());
 327   addr.setFromIpPort("127.0.0.0", 0xffff);
 328   EXPECT_TRUE(addr.isLoopbackAddress());
 329   addr.setFromIpPort("127.1.1.1", 0xffff);
 330   EXPECT_TRUE(addr.isLoopbackAddress());
 331   addr.setFromIpPort("127.255.255.255", 80);
 332   EXPECT_TRUE(addr.isLoopbackAddress());
 333
 334   addr.setFromIpPort("128.0.0.0", 0);
 335   EXPECT_TRUE(!addr.isLoopbackAddress());
 336   addr.setFromIpPort("126.255.255.255", 0);
 337   EXPECT_TRUE(!addr.isLoopbackAddress());
 338   addr.setFromIpPort("10.1.2.3", 0);
 339   EXPECT_TRUE(!addr.isLoopbackAddress());
 340
 341   // IPv6
 342   addr.setFromIpPort("::1", 0);
 343   EXPECT_TRUE(addr.isLoopbackAddress());
 344   addr.setFromIpPort("::0", 0);
 345   EXPECT_TRUE(!addr.isLoopbackAddress());
 346   addr.setFromIpPort("::2", 0);
 347   EXPECT_TRUE(!addr.isLoopbackAddress());
 348
 349   // IPv4-mapped IPv6
 350   addr.setFromIpPort("::ffff:127.0.0.1", 0);
 351   EXPECT_TRUE(addr.isLoopbackAddress());
 352   addr.setFromIpPort("::ffff:7f0a:141e", 0);
 353   EXPECT_TRUE(addr.isLoopbackAddress());
 354   addr.setFromIpPort("::ffff:169.254.0.13", 0);
 355   EXPECT_TRUE(!addr.isLoopbackAddress());
 356
 357   // Unix sockets are considered loopback addresses
 358   addr.setFromPath("/tmp/mysock");
 359   EXPECT_TRUE(addr.isLoopbackAddress());
 360 }
 361
 362 void CheckPrefixMatch(const SocketAddress& first,
 363     const SocketAddress& second, unsigned matchingPrefixLen) {
 364   unsigned i;
 365   for (i = 0; i <= matchingPrefixLen; i++) {
 366     EXPECT_TRUE(first.prefixMatch(second, i));
 367   }
 368   unsigned addrLen = (first.getFamily() == AF_INET6) ? 128 : 32;
 369   for (; i <= addrLen; i++) {
 370     EXPECT_TRUE(!first.prefixMatch(second, i));
 371   }
 372 }
 373
 374 TEST(SocketAddress, PrefixMatch) {
 375   // IPv4
 376   SocketAddress addr1("127.0.0.1", 0);
 377   SocketAddress addr2("127.0.0.1", 0);
 378   CheckPrefixMatch(addr1, addr2, 32);
 379
 380   addr2.setFromIpPort("127.0.1.1", 0);
 381   CheckPrefixMatch(addr1, addr2, 23);
 382
 383   addr2.setFromIpPort("1.1.0.127", 0);
 384   CheckPrefixMatch(addr1, addr2, 1);
 385
 386   // Address family mismatch
 387   addr2.setFromIpPort("::ffff:127.0.0.1", 0);
 388   EXPECT_TRUE(!addr1.prefixMatch(addr2, 1));
 389
 390   // IPv6
 391   addr1.setFromIpPort("2a03:2880:10:8f02:face:b00c:0:25", 0);
 392   CheckPrefixMatch(addr1, addr2, 2);
 393
 394   addr2.setFromIpPort("2a03:2880:10:8f02:face:b00c:0:25", 0);
 395   CheckPrefixMatch(addr1, addr2, 128);
 396
 397   addr2.setFromIpPort("2a03:2880:30:8f02:face:b00c:0:25", 0);
 398   CheckPrefixMatch(addr1, addr2, 42);
 399 }
 400
 401 void CheckFirstLessThanSecond(SocketAddress first, SocketAddress second) {
 402   EXPECT_TRUE(!(first < first));
 403   EXPECT_TRUE(!(second < second));
 404   EXPECT_TRUE(first < second);
 405   EXPECT_TRUE(!(first == second));
 406   EXPECT_TRUE(!(second < first));
 407 }
 408
 409 TEST(SocketAddress, CheckComparatorBehavior) {
 410   SocketAddress first, second;
 411   // The following comparison are strict (so if first and second were
 412   // inverted that is ok.
 413
 414   //IP V4
 415
 416   // port comparisions
 417   first.setFromIpPort("128.0.0.0", 0);
 418   second.setFromIpPort("128.0.0.0", 0xFFFF);
 419   CheckFirstLessThanSecond(first, second);
 420   first.setFromIpPort("128.0.0.100", 0);
 421   second.setFromIpPort("128.0.0.0", 0xFFFF);
 422   CheckFirstLessThanSecond(first, second);
 423
 424   // Address comparisons
 425   first.setFromIpPort("128.0.0.0", 10);
 426   second.setFromIpPort("128.0.0.100", 10);
 427   CheckFirstLessThanSecond(first, second);
 428
 429   // Comaprision between IPV4 and IPV6
 430   first.setFromIpPort("128.0.0.0", 0);
 431   second.setFromIpPort("::ffff:127.0.0.1", 0);
 432   CheckFirstLessThanSecond(first, second);
 433   first.setFromIpPort("128.0.0.0", 100);
 434   second.setFromIpPort("::ffff:127.0.0.1", 0);
 435   CheckFirstLessThanSecond(first, second);
 436
 437   // IPV6 comparisons
 438
 439   // port comparisions
 440   first.setFromIpPort("::0", 0);
 441   second.setFromIpPort("::0", 0xFFFF);
 442   CheckFirstLessThanSecond(first, second);
 443   first.setFromIpPort("::0", 0);
 444   second.setFromIpPort("::1", 0xFFFF);
 445   CheckFirstLessThanSecond(first, second);
 446
 447   // Address comparisons
 448   first.setFromIpPort("::0", 10);
 449   second.setFromIpPort("::1", 10);
 450   CheckFirstLessThanSecond(first, second);
 451
 452   // Unix
 453   first.setFromPath("/foo");
 454   second.setFromPath("/1234");
 455   // The exact comparison order doesn't really matter, as long as
 456   // (a < b), (b < a), and (a == b) are consistent.
 457   // This checks our current comparison rules, which checks the path length
 458   // before the path contents.
 459   CheckFirstLessThanSecond(first, second);
 460   first.setFromPath("/1234");
 461   second.setFromPath("/5678");
 462   CheckFirstLessThanSecond(first, second);
 463
 464   // IPv4 vs Unix.
 465   // We currently compare the address family values, and AF_UNIX < AF_INET
 466   first.setFromPath("/foo");
 467   second.setFromIpPort("127.0.0.1", 80);
 468   CheckFirstLessThanSecond(first, second);
 469 }
 470
 471 TEST(SocketAddress, Unix) {
 472   SocketAddress addr;
 473
 474   // Test a small path
 475   addr.setFromPath("foo");
 476   EXPECT_EQ(addr.getFamily(), AF_UNIX);
 477   EXPECT_EQ(addr.describe(), "foo");
 478   EXPECT_THROW(addr.getAddressStr(), std::invalid_argument);
 479   EXPECT_THROW(addr.getPort(), std::invalid_argument);
 480   EXPECT_TRUE(addr.isPrivateAddress());
 481   EXPECT_TRUE(addr.isLoopbackAddress());
 482
 483   // Test a path that is too large
 484   const char longPath[] =
 485     "abcdefghijklmnopqrstuvwxyz0123456789"
 486     "abcdefghijklmnopqrstuvwxyz0123456789"
 487     "abcdefghijklmnopqrstuvwxyz0123456789"
 488     "abcdefghijklmnopqrstuvwxyz0123456789";
 489   EXPECT_THROW(addr.setFromPath(longPath), std::invalid_argument);
 490   // The original address should still be the same
 491   EXPECT_EQ(addr.getFamily(), AF_UNIX);
 492   EXPECT_EQ(addr.describe(), "foo");
 493
 494   // Test a path that exactly fits in sockaddr_un
 495   // (not including the NUL terminator)
 496   const char exactLengthPath[] =
 497     "abcdefghijklmnopqrstuvwxyz0123456789"
 498     "abcdefghijklmnopqrstuvwxyz0123456789"
 499     "abcdefghijklmnopqrstuvwxyz0123456789";
 500   addr.setFromPath(exactLengthPath);
 501   EXPECT_EQ(addr.describe(), exactLengthPath);
 502
 503   // Test converting a unix socket address to an IPv4 one, then back
 504   addr.setFromHostPort("127.0.0.1", 1234);
 505   EXPECT_EQ(addr.getFamily(), AF_INET);
 506   EXPECT_EQ(addr.describe(), "127.0.0.1:1234");
 507   addr.setFromPath("/i/am/a/unix/address");
 508   EXPECT_EQ(addr.getFamily(), AF_UNIX);
 509   EXPECT_EQ(addr.describe(), "/i/am/a/unix/address");
 510
 511   // Test copy constructor and assignment operator
 512   {
 513     SocketAddress copy(addr);
 514     EXPECT_EQ(copy, addr);
 515     copy.setFromPath("/abc");
 516     EXPECT_NE(copy, addr);
 517     copy = addr;
 518     EXPECT_EQ(copy, addr);
 519     copy.setFromIpPort("127.0.0.1", 80);
 520     EXPECT_NE(copy, addr);
 521     copy = addr;
 522     EXPECT_EQ(copy, addr);
 523   }
 524
 525   {
 526     SocketAddress copy(addr);
 527     EXPECT_EQ(copy, addr);
 528     EXPECT_EQ(copy.describe(), "/i/am/a/unix/address");
 529     EXPECT_EQ(copy.getPath(), "/i/am/a/unix/address");
 530
 531     SocketAddress other("127.0.0.1", 80);
 532     EXPECT_NE(other, addr);
 533     other = copy;
 534     EXPECT_EQ(other, copy);
 535     EXPECT_EQ(other, addr);
 536     EXPECT_EQ(copy, addr);
 537   }
 538
 539 #if __GXX_EXPERIMENTAL_CXX0X__
 540   {
 541     SocketAddress copy;
 542     {
 543       // move a unix address into a non-unix address
 544       SocketAddress tmpCopy(addr);
 545       copy = std::move(tmpCopy);
 546     }
 547     EXPECT_EQ(copy, addr);
 548
 549     copy.setFromPath("/another/path");
 550     {
 551       // move a unix address into a unix address
 552       SocketAddress tmpCopy(addr);
 553       copy = std::move(tmpCopy);
 554     }
 555     EXPECT_EQ(copy, addr);
 556
 557     {
 558       // move a non-unix address into a unix address
 559       SocketAddress tmp("127.0.0.1", 80);
 560       copy = std::move(tmp);
 561     }
 562     EXPECT_EQ(copy.getAddressStr(), "127.0.0.1");
 563     EXPECT_EQ(copy.getPort(), 80);
 564
 565     copy = addr;
 566     // move construct a unix address
 567     SocketAddress other(std::move(copy));
 568     EXPECT_EQ(other, addr);
 569     EXPECT_EQ(other.getPath(), addr.getPath());
 570   }
 571 #endif
 572 }
 573
 574 TEST(SocketAddress, AnonymousUnix) {
 575   // Create a unix socket pair, and get the addresses.
 576   int fds[2];
 577   int rc = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
 578   EXPECT_EQ(rc, 0);
 579
 580   SocketAddress addr0;
 581   SocketAddress peer0;
 582   SocketAddress addr1;
 583   SocketAddress peer1;
 584   addr0.setFromLocalAddress(fds[0]);
 585   peer0.setFromPeerAddress(fds[0]);
 586   addr1.setFromLocalAddress(fds[1]);
 587   peer1.setFromPeerAddress(fds[1]);
 588   close(fds[0]);
 589   close(fds[1]);
 590
 591   EXPECT_EQ(addr0.describe(), "<anonymous unix address>");
 592   EXPECT_EQ(addr1.describe(), "<anonymous unix address>");
 593   EXPECT_EQ(peer0.describe(), "<anonymous unix address>");
 594   EXPECT_EQ(peer1.describe(), "<anonymous unix address>");
 595
 596   // Anonymous addresses should never compare equal
 597   EXPECT_NE(addr0, addr1);
 598   EXPECT_NE(peer0, peer1);
 599
 600   // Note that logically addr0 and peer1 are the same,
 601   // but since they are both anonymous we have no way to determine this
 602   EXPECT_NE(addr0, peer1);
 603   // We can't even tell if an anonymous address is equal to itself
 604   EXPECT_NE(addr0, addr0);
 605 }
 606
 607 #define REQUIRE_ERRNO(cond, msg) \
 608   if (!(cond)) { \
 609     int _requireErrnoCopy_ = errno; \
 610     std::ostringstream _requireMsg_; \
 611     _requireMsg_ << (msg) << ": " << strerror(_requireErrnoCopy_); \
 612     ADD_FAILURE(); \
 613   }
 614
 615 void testSetFromSocket(const SocketAddress *serverBindAddr,
 616                        const SocketAddress *clientBindAddr,
 617                        SocketAddress *listenAddrRet,
 618                        SocketAddress *acceptAddrRet,
 619                        SocketAddress *serverAddrRet,
 620                        SocketAddress *serverPeerAddrRet,
 621                        SocketAddress *clientAddrRet,
 622                        SocketAddress *clientPeerAddrRet) {
 623   int listenSock = socket(serverBindAddr->getFamily(), SOCK_STREAM, 0);
 624   REQUIRE_ERRNO(listenSock > 0, "failed to create listen socket");
 625   sockaddr_storage laddr;
 626   serverBindAddr->getAddress(&laddr);
 627   socklen_t laddrLen = serverBindAddr->getActualSize();
 628   int rc = bind(listenSock, reinterpret_cast<sockaddr*>(&laddr), laddrLen);
 629   REQUIRE_ERRNO(rc == 0, "failed to bind to server socket");
 630   rc = listen(listenSock, 10);
 631   REQUIRE_ERRNO(rc == 0, "failed to listen");
 632
 633   listenAddrRet->setFromLocalAddress(listenSock);
 634
 635   SocketAddress listenPeerAddr;
 636   EXPECT_THROW(listenPeerAddr.setFromPeerAddress(listenSock),
 637                std::runtime_error);
 638
 639   // Note that we use the family from serverBindAddr here, since we allow
 640   // clientBindAddr to be nullptr.
 641   int clientSock = socket(serverBindAddr->getFamily(), SOCK_STREAM, 0);
 642   REQUIRE_ERRNO(clientSock > 0, "failed to create client socket");
 643   if (clientBindAddr != nullptr) {
 644     sockaddr_storage clientAddr;
 645     clientBindAddr->getAddress(&clientAddr);
 646
 647     rc = bind(clientSock, reinterpret_cast<sockaddr*>(&clientAddr),
 648               clientBindAddr->getActualSize());
 649     REQUIRE_ERRNO(rc == 0, "failed to bind to client socket");
 650   }
 651
 652   sockaddr_storage listenAddr;
 653   listenAddrRet->getAddress(&listenAddr);
 654   rc = connect(clientSock, reinterpret_cast<sockaddr*>(&listenAddr),
 655                listenAddrRet->getActualSize());
 656   REQUIRE_ERRNO(rc == 0, "failed to connect");
 657
 658   sockaddr_storage acceptAddr;
 659   socklen_t acceptAddrLen = sizeof(acceptAddr);
 660   int serverSock = accept(listenSock, reinterpret_cast<sockaddr*>(&acceptAddr), &acceptAddrLen);
 661   REQUIRE_ERRNO(serverSock > 0, "failed to accept");
 662   acceptAddrRet->setFromSockaddr(reinterpret_cast<sockaddr*>(&acceptAddr), acceptAddrLen);
 663
 664   serverAddrRet->setFromLocalAddress(serverSock);
 665   serverPeerAddrRet->setFromPeerAddress(serverSock);
 666   clientAddrRet->setFromLocalAddress(clientSock);
 667   clientPeerAddrRet->setFromPeerAddress(clientSock);
 668
 669   close(clientSock);
 670   close(serverSock);
 671   close(listenSock);
 672 }
 673
 674 TEST(SocketAddress, SetFromSocketIPv4) {
 675   SocketAddress serverBindAddr("0.0.0.0", 0);
 676   SocketAddress clientBindAddr("0.0.0.0", 0);
 677   SocketAddress listenAddr;
 678   SocketAddress acceptAddr;
 679   SocketAddress serverAddr;
 680   SocketAddress serverPeerAddr;
 681   SocketAddress clientAddr;
 682   SocketAddress clientPeerAddr;
 683
 684   testSetFromSocket(&serverBindAddr, &clientBindAddr,
 685                     &listenAddr, &acceptAddr,
 686                     &serverAddr, &serverPeerAddr,
 687                     &clientAddr, &clientPeerAddr);
 688
 689   // The server socket's local address should have the same port as the listen
 690   // address.  The IP will be different, since the listening socket is
 691   // listening on INADDR_ANY, but the server socket will have a concrete IP
 692   // address assigned to it.
 693   EXPECT_EQ(serverAddr.getPort(), listenAddr.getPort());
 694
 695   // The client's peer address should always be the same as the server
 696   // socket's address.
 697   EXPECT_EQ(clientPeerAddr, serverAddr);
 698   // The address returned by getpeername() on the server socket should
 699   // be the same as the address returned by accept()
 700   EXPECT_EQ(serverPeerAddr, acceptAddr);
 701   EXPECT_EQ(serverPeerAddr, clientAddr);
 702   EXPECT_EQ(acceptAddr, clientAddr);
 703 }
 704
 705 /*
 706  * Note this test exercises Linux-specific Unix socket behavior
 707  */
 708 TEST(SocketAddress, SetFromSocketUnixAbstract) {
 709   // Explicitly binding to an empty path results in an abstract socket
 710   // name being picked for us automatically.
 711   SocketAddress serverBindAddr;
 712   string path(1, 0);
 713   path.append("test address");
 714   serverBindAddr.setFromPath(path);
 715   SocketAddress clientBindAddr;
 716   clientBindAddr.setFromPath("");
 717
 718   SocketAddress listenAddr;
 719   SocketAddress acceptAddr;
 720   SocketAddress serverAddr;
 721   SocketAddress serverPeerAddr;
 722   SocketAddress clientAddr;
 723   SocketAddress clientPeerAddr;
 724
 725   testSetFromSocket(&serverBindAddr, &clientBindAddr,
 726                     &listenAddr, &acceptAddr,
 727                     &serverAddr, &serverPeerAddr,
 728                     &clientAddr, &clientPeerAddr);
 729
 730   // The server socket's local address should be the same as the listen
 731   // address.
 732   EXPECT_EQ(serverAddr, listenAddr);
 733
 734   // The client's peer address should always be the same as the server
 735   // socket's address.
 736   EXPECT_EQ(clientPeerAddr, serverAddr);
 737
 738   EXPECT_EQ(serverPeerAddr, clientAddr);
 739   // Oddly, the address returned by accept() does not seem to match the address
 740   // returned by getpeername() on the server socket or getsockname() on the
 741   // client socket.
 742   // EXPECT_EQ(serverPeerAddr, acceptAddr);
 743   // EXPECT_EQ(acceptAddr, clientAddr);
 744 }
 745
 746 TEST(SocketAddress, SetFromSocketUnixExplicit) {
 747   // Pick two temporary path names.
 748   // We use mkstemp() just to avoid warnings about mktemp,
 749   // but we need to remove the file to let the socket code bind to it.
 750   char serverPath[] = "/tmp/SocketAddressTest.server.XXXXXX";
 751   int serverPathFd = mkstemp(serverPath);
 752   EXPECT_GE(serverPathFd, 0);
 753   char clientPath[] = "/tmp/SocketAddressTest.client.XXXXXX";
 754   int clientPathFd = mkstemp(clientPath);
 755   EXPECT_GE(clientPathFd, 0);
 756
 757   int rc = unlink(serverPath);
 758   EXPECT_EQ(rc, 0);
 759   rc = unlink(clientPath);
 760   EXPECT_EQ(rc, 0);
 761
 762   SocketAddress serverBindAddr;
 763   SocketAddress clientBindAddr;
 764   SocketAddress listenAddr;
 765   SocketAddress acceptAddr;
 766   SocketAddress serverAddr;
 767   SocketAddress serverPeerAddr;
 768   SocketAddress clientAddr;
 769   SocketAddress clientPeerAddr;
 770   try {
 771     serverBindAddr.setFromPath(serverPath);
 772     clientBindAddr.setFromPath(clientPath);
 773
 774     testSetFromSocket(&serverBindAddr, &clientBindAddr,
 775                       &listenAddr, &acceptAddr,
 776                       &serverAddr, &serverPeerAddr,
 777                       &clientAddr, &clientPeerAddr);
 778   } catch (...) {
 779     // Remove the socket files after we are done
 780     unlink(serverPath);
 781     unlink(clientPath);
 782     throw;
 783   }
 784   unlink(serverPath);
 785   unlink(clientPath);
 786
 787   // The server socket's local address should be the same as the listen
 788   // address.
 789   EXPECT_EQ(serverAddr, listenAddr);
 790
 791   // The client's peer address should always be the same as the server
 792   // socket's address.
 793   EXPECT_EQ(clientPeerAddr, serverAddr);
 794
 795   EXPECT_EQ(serverPeerAddr, clientAddr);
 796   EXPECT_EQ(serverPeerAddr, acceptAddr);
 797   EXPECT_EQ(acceptAddr, clientAddr);
 798 }
 799
 800 TEST(SocketAddress, SetFromSocketUnixAnonymous) {
 801   // Test an anonymous client talking to a fixed-path unix socket.
 802   char serverPath[] = "/tmp/SocketAddressTest.server.XXXXXX";
 803   int serverPathFd = mkstemp(serverPath);
 804   EXPECT_GE(serverPathFd, 0);
 805   int rc = unlink(serverPath);
 806   EXPECT_EQ(rc, 0);
 807
 808   SocketAddress serverBindAddr;
 809   SocketAddress listenAddr;
 810   SocketAddress acceptAddr;
 811   SocketAddress serverAddr;
 812   SocketAddress serverPeerAddr;
 813   SocketAddress clientAddr;
 814   SocketAddress clientPeerAddr;
 815   try {
 816     serverBindAddr.setFromPath(serverPath);
 817
 818     testSetFromSocket(&serverBindAddr, nullptr,
 819                       &listenAddr, &acceptAddr,
 820                       &serverAddr, &serverPeerAddr,
 821                       &clientAddr, &clientPeerAddr);
 822   } catch (...) {
 823     // Remove the socket file after we are done
 824     unlink(serverPath);
 825     throw;
 826   }
 827   unlink(serverPath);
 828
 829   // The server socket's local address should be the same as the listen
 830   // address.
 831   EXPECT_EQ(serverAddr, listenAddr);
 832
 833   // The client's peer address should always be the same as the server
 834   // socket's address.
 835   EXPECT_EQ(clientPeerAddr, serverAddr);
 836
 837   // Since the client is using an anonymous address, it won't compare equal to
 838   // any other anonymous addresses.  Make sure the addresses are anonymous.
 839   EXPECT_EQ(serverPeerAddr.getPath(), "");
 840   EXPECT_EQ(clientAddr.getPath(), "");
 841   EXPECT_EQ(acceptAddr.getPath(), "");
 842 }
 843
 844 TEST(SocketAddress, ResetUnixAddress) {
 845   SocketAddress addy;
 846   addy.setFromPath("/foo");
 847
 848   addy.reset();
 849   EXPECT_EQ(addy.getFamily(), AF_UNSPEC);
 850 }