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