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1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "uv.h"
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23 #include "task.h"
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24
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29
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30 #define CHECK_HANDLE(handle) \
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31 ASSERT_NE((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client, 0)
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32
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33 #if defined(__APPLE__) || \
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34 defined(_AIX) || \
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35 defined(__MVS__) || \
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36 defined(__FreeBSD__) || \
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37 defined(__NetBSD__) || \
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38 defined(__OpenBSD__)
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39 #define MULTICAST_ADDR "ff02::1%lo0"
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40 #define INTERFACE_ADDR "::1%lo0"
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41 #else
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42 #define MULTICAST_ADDR "ff02::1"
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43 #define INTERFACE_ADDR NULL
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44 #endif
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45
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46 static uv_udp_t server;
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47 static uv_udp_t client;
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48 static uv_udp_send_t req;
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49 static uv_udp_send_t req_ss;
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50
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51 static int cl_recv_cb_called;
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52
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53 static int sv_send_cb_called;
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54
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55 static int close_cb_called;
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56
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57 static void alloc_cb(uv_handle_t* handle,
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58 size_t suggested_size,
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59 uv_buf_t* buf) {
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60 static char slab[65536];
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61 CHECK_HANDLE(handle);
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62 ASSERT_LE(suggested_size, sizeof(slab));
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63 buf->base = slab;
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64 buf->len = sizeof(slab);
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65 }
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66
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67
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68 static void close_cb(uv_handle_t* handle) {
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69 CHECK_HANDLE(handle);
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70 close_cb_called++;
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71 }
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72
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73
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74 static void sv_send_cb(uv_udp_send_t* req, int status) {
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75 ASSERT_NOT_NULL(req);
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76 ASSERT_OK(status);
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77 CHECK_HANDLE(req->handle);
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78
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79 sv_send_cb_called++;
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80
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81 if (sv_send_cb_called == 2)
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82 uv_close((uv_handle_t*) req->handle, close_cb);
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83 }
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84
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85
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86 static int do_send(uv_udp_send_t* send_req) {
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87 uv_buf_t buf;
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88 struct sockaddr_in6 addr;
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89
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90 buf = uv_buf_init("PING", 4);
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91
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92 ASSERT_OK(uv_ip6_addr(MULTICAST_ADDR, TEST_PORT, &addr));
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93
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94 /* client sends "PING" */
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95 return uv_udp_send(send_req,
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96 &client,
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97 &buf,
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98 1,
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99 (const struct sockaddr*) &addr,
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100 sv_send_cb);
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101 }
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102
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103
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104 static void cl_recv_cb(uv_udp_t* handle,
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105 ssize_t nread,
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106 const uv_buf_t* buf,
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107 const struct sockaddr* addr,
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108 unsigned flags) {
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109 CHECK_HANDLE(handle);
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110 ASSERT_OK(flags);
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111
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112 if (nread < 0) {
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113 ASSERT(0 && "unexpected error");
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114 }
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115
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116 if (nread == 0) {
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117 /* Returning unused buffer. Don't count towards cl_recv_cb_called */
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118 ASSERT_NULL(addr);
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119 return;
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120 }
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121
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122 ASSERT_NOT_NULL(addr);
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123 ASSERT_EQ(4, nread);
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124 ASSERT(!memcmp("PING", buf->base, nread));
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125
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126 cl_recv_cb_called++;
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127
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128 if (cl_recv_cb_called == 2) {
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129 /* we are done with the server handle, we can close it */
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130 uv_close((uv_handle_t*) &server, close_cb);
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131 } else {
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132 int r;
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133 char source_addr[64];
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134
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135 r = uv_ip6_name((const struct sockaddr_in6*)addr, source_addr, sizeof(source_addr));
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136 ASSERT_OK(r);
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137
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138 r = uv_udp_set_membership(&server, MULTICAST_ADDR, INTERFACE_ADDR, UV_LEAVE_GROUP);
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139 ASSERT_OK(r);
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140
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141 r = uv_udp_set_source_membership(&server, MULTICAST_ADDR, INTERFACE_ADDR, source_addr, UV_JOIN_GROUP);
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142 ASSERT_OK(r);
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143
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144 r = do_send(&req_ss);
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145 ASSERT_OK(r);
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146 }
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147 }
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148
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149
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150 static int can_ipv6_external(void) {
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151 uv_interface_address_t* addr;
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152 int supported;
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153 int count;
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154 int i;
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155
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156 if (uv_interface_addresses(&addr, &count))
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157 return 0; /* Assume no IPv6 support on failure. */
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158
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159 supported = 0;
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160 for (i = 0; supported == 0 && i < count; i += 1)
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161 supported = (AF_INET6 == addr[i].address.address6.sin6_family &&
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162 !addr[i].is_internal);
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163
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164 uv_free_interface_addresses(addr, count);
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165 return supported;
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166 }
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167
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168
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169 TEST_IMPL(udp_multicast_join6) {
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170 int r;
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171 struct sockaddr_in6 addr;
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172
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173 if (!can_ipv6_external())
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174 RETURN_SKIP("No external IPv6 interface available");
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175
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176 ASSERT_OK(uv_ip6_addr("::", TEST_PORT, &addr));
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177
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178 r = uv_udp_init(uv_default_loop(), &server);
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179 ASSERT_OK(r);
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180
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181 r = uv_udp_init(uv_default_loop(), &client);
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182 ASSERT_OK(r);
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183
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184 /* bind to the desired port */
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185 r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0);
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186 ASSERT_OK(r);
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187
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188 r = uv_udp_set_membership(&server, MULTICAST_ADDR, INTERFACE_ADDR, UV_JOIN_GROUP);
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189 if (r == UV_ENODEV) {
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190 MAKE_VALGRIND_HAPPY(uv_default_loop());
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191 RETURN_SKIP("No ipv6 multicast route");
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192 }
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193
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194 ASSERT_OK(r);
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195
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196 #if defined(__ANDROID__)
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197 /* It returns an ENOSYS error */
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198 RETURN_SKIP("Test does not currently work in ANDROID");
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199 #endif
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200
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201 /* TODO(gengjiawen): Fix test on QEMU. */
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202 #if defined(__QEMU__)
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203 RETURN_SKIP("Test does not currently work in QEMU");
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204 #endif
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205 r = uv_udp_recv_start(&server, alloc_cb, cl_recv_cb);
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206 ASSERT_OK(r);
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207
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208 r = do_send(&req);
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209 ASSERT_OK(r);
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210
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211 ASSERT_OK(close_cb_called);
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212 ASSERT_OK(cl_recv_cb_called);
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213 ASSERT_OK(sv_send_cb_called);
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214
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215 /* run the loop till all events are processed */
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216 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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217
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218 ASSERT_EQ(2, cl_recv_cb_called);
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219 ASSERT_EQ(2, sv_send_cb_called);
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220 ASSERT_EQ(2, close_cb_called);
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221
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222 MAKE_VALGRIND_HAPPY(uv_default_loop());
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223 return 0;
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224 }
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