[NaCl SDK] Add UDP and TCP Sockets

native_client_sdk/src/libraries/nacl_io_socket_test/socket_test.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+
+#include <map>
+#include <string>
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#include "nacl_io/kernel_intercept.h"
+#include "nacl_io/kernel_proxy.h"
+#include "nacl_io/ossocket.h"
+#include "nacl_io/ostypes.h"
+
+#ifdef PROVIDES_SOCKET_API
+
+using namespace nacl_io;
+using namespace sdk_util;
+
+// No error expected
+#define ENONE 0
+
+uint16_t htons(uint16_t val) {

[binji, 2013/08/09 19:28:06]

why not use the functions provided by nacl_io?

[noelallen1, 2013/08/09 22:53:22]

Has that landed?  I'll merge it in if available.

[Sam Clegg, 2013/08/09 23:08:00]

Yup, https://chromiumcodereview.appspot.com/22625004

+  return (val >> 8) | (val << 8);
+}
+
+uint32_t htonl(uint32_t val) {
+  return (val >> 24) | ((val >> 8) & 0xFF00) |
+         ((val << 8) & 0xFF0000) | (val << 24);
+}
+
+namespace {
+class SocketTest : public ::testing::Test {
+ public:
+  ~SocketTest() {
+    EXPECT_EQ(0, ki_close(sock1));
+    EXPECT_EQ(0, ki_close(sock2));
+  }
+
+  void IP4ToSockAddr(struct sockaddr_in* addr, uint32_t ip, uint16_t port) {

[binji, 2013/08/09 19:28:06]

seems backward to have the out parameter first

[noelallen1, 2013/08/09 22:53:22]

Done.

+    memset(addr, 0, sizeof(*addr));
+
+    addr->sin_family = AF_INET;
+    uint16_t rport = htons(port);
+    addr->sin_port = rport;

[binji, 2013/08/09 19:28:06]

why not just addr->sin_port = htons(port);

[noelallen1, 2013/08/09 22:53:22]

Done.

+    uint32_t rip = htonl(ip);
+    addr->sin_addr.s_addr = rip;
+  }
+
+  void Bind(int fd, uint32_t ip, uint16_t port, int expect) {

[binji, 2013/08/09 19:28:06]

expect_errno?

[noelallen1, 2013/08/09 22:53:22]

Done.

+    sockaddr_in addr;
+    socklen_t addrlen = sizeof(addr);
+
+    IP4ToSockAddr(&addr, ip, port);
+    int err = bind(fd, (sockaddr*) &addr, addrlen);

[binji, 2013/08/09 19:28:06]

ki_bind?

[noelallen1, 2013/08/09 22:53:22]

Whoops, removing ki_  this should be the end-to-end version of testing.

+
+    if (expect != 0) {

[binji, 2013/08/09 19:28:06]

ENONE

[noelallen1, 2013/08/09 22:53:22]

Done.

+      EXPECT_EQ(-1, err);
+      EXPECT_EQ(errno, expect);
+    } else {
+      EXPECT_EQ(0, err);
+    }
+  }
+
+  void SetupPorts() {
+    Bind(sock1, 0x7F000001, 0, ENONE);

[binji, 2013/08/09 19:28:06]

use const instead of magic number

[noelallen1, 2013/08/09 22:53:22]

Done.

+    Bind(sock2, 0x7F000001, 0, ENONE);
+  }
+
+ public:
+  int sock1;

[binji, 2013/08/09 19:28:06]

initialize member variables in constructor

[noelallen1, 2013/08/09 22:53:22]

Done.

+  int sock2;
+  uint16_t port1;
+  uint16_t port2;
+};
+
+class SocketTestUDP : public SocketTest {
+ public:
+  SocketTestUDP() {
+    sock1 = ki_socket(AF_INET, SOCK_DGRAM, 0);
+    sock2 = ki_socket(AF_INET, SOCK_DGRAM, 0);
+
+    EXPECT_LT(-1, sock1);
+    EXPECT_LT(-1, sock2);
+  }
+};
+
+class SocketTestTCP : public SocketTest {
+ public:
+  SocketTestTCP() {
+    sock1 = ki_socket(AF_INET, SOCK_STREAM, 0);
+    sock2 = ki_socket(AF_INET, SOCK_STREAM, 0);
+
+    EXPECT_LT(-1, sock1);
+    EXPECT_LT(-1, sock2);
+  }
+};
+
+}  // namespace
+
+
+TEST(SocketTest, Socket) {
+  EXPECT_LT(ki_socket(AF_UNIX, SOCK_STREAM, 0), 0);

[binji, 2013/08/09 19:28:06]

this looks a bit strange, maybe

EXPECT_EQ(-1, ki_socket(...))

instead?

[noelallen1, 2013/08/09 22:53:22]

Done.

+  EXPECT_EQ(errno, EAFNOSUPPORT);
+  EXPECT_LT(ki_socket(AF_INET, SOCK_RAW, 0), 0);
+  EXPECT_EQ(errno, EPROTONOSUPPORT);
+
+  int sock1 = ki_socket(AF_INET, SOCK_DGRAM, 0);

[binji, 2013/08/09 19:28:06]

shadows this->sock1, which has dummy value, and is closed by the destructor. Not
a failure to close a bogus socket?

[noelallen1, 2013/08/09 22:53:22]

This is not a TEST_F.

[binji, 2013/08/09 23:08:27]

You're right, whoops!

+  EXPECT_NE(-1, sock1);
+
+  int sock2 = ki_socket(AF_INET6, SOCK_DGRAM, 0);
+  EXPECT_NE(-1, sock2);
+
+  int sock3 = ki_socket(AF_INET, SOCK_STREAM, 0);
+  EXPECT_NE(-1, sock3);
+
+  int sock4 = ki_socket(AF_INET6, SOCK_STREAM, 0);
+  EXPECT_NE(-1, sock4);
+
+  ki_close(sock1);
+  ki_close(sock2);
+  ki_close(sock3);
+  ki_close(sock4);
+}
+
+TEST_F(SocketTestUDP, Bind) {
+  // Bind away.
+  Bind(sock1, 0x7F000001, 4006, ENONE);
+
+  // Invalid to rebind a socket.
+  Bind(sock1, 0x7F000001, 4006, EINVAL);
+
+  // Addr in use.
+  Bind(sock2, 0x7F000001, 4006, EADDRINUSE);
+
+  // Bind with a wildcard.
+  Bind(sock2, 0x7F000001, 0, ENONE);
+
+  // Invalid to rebind after wildcard
+  Bind(sock2, 0x7F000001, 4007, EINVAL);
+
+}
+
+TEST_F(SocketTestUDP, SendRcv) {
+  char outbuf[256];
+  char inbuf[512];

[binji, 2013/08/09 19:28:06]

why different sizes?

[noelallen1, 2013/08/09 22:53:22]

To read > expected

+
+  memset(outbuf, 1, sizeof(outbuf));
+  memset(inbuf, 0, sizeof(inbuf));
+
+  Bind(sock1, 0x7F000001, 4006, ENONE);
+  Bind(sock2, 0x7F000001, 4007, ENONE);
+
+  sockaddr_in addr;
+  socklen_t addrlen = sizeof(addr);
+  IP4ToSockAddr(&addr, 0x7F000001, 4007);
+
+  int len1 =
+     sendto(sock1, outbuf, sizeof(outbuf), 0,(sockaddr *)  &addr, addrlen);

[binji, 2013/08/09 19:28:06]

nit: space after comma, remove extra space after cast

[binji, 2013/08/09 19:28:06]

ki_sendto?

[noelallen1, 2013/08/09 22:53:22]

Done.

[noelallen1, 2013/08/09 22:53:22]

no ki_*, end to end.

[binji, 2013/08/09 23:08:27]

OK, I see.

+  EXPECT_EQ(sizeof(outbuf), len1);
+
+  // Ensure the buffers are different
+  EXPECT_NE(0, memcmp(outbuf, inbuf, sizeof(outbuf)));
+
+  // Try to receive the previously sent packet
+  int len2 =
+    ki_recvfrom(sock2, inbuf, sizeof(inbuf), 0, (sockaddr *) &addr, &addrlen);
+  EXPECT_EQ(sizeof(outbuf), len2);
+  EXPECT_EQ(sizeof(sockaddr_in), addrlen);

[binji, 2013/08/09 19:28:06]

check addr?

[noelallen1, 2013/08/09 22:53:22]

Done.

+
+  // Now they should be the same
+  EXPECT_EQ(0, memcmp(outbuf, inbuf, sizeof(outbuf)));
+}
+
+TEST_F(SocketTestTCP, Connect) {
+  int sock = socket(AF_INET, SOCK_STREAM, 0);
+  EXPECT_NE(-1, sock);
+
+  sockaddr_in addr;
+  socklen_t addrlen = sizeof(addr);
+
+  IP4ToSockAddr(&addr, 0x7F000001, 4006);
+  int err = connect(sock, (sockaddr*) &addr, addrlen);
+  EXPECT_EQ(0, err);
+
+  if (err) {
+    EXPECT_EQ(0, errno);

[binji, 2013/08/09 19:28:06]

check doesn't make sense -- if err is non-zero, we don't expect errno to be
zero. Remove if and just do EXPECT_EQ(0, errno)

[noelallen1, 2013/08/09 22:53:22]

Done.

+  }
+}
+
+
+#endif  // PROVIDES_SOCKETPAIR_API