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(__FreeBSD__) || \
37 defined(__NetBSD__) || \
38 defined(__OpenBSD__)
39 #define MULTICAST_ADDR "ff02::1%lo0"
40 #define INTERFACE_ADDR "::1%lo0"
41 #else
42 #define MULTICAST_ADDR "ff02::1"
43 #define INTERFACE_ADDR NULL
44 #endif
45
46 static uv_udp_t server;
47 static uv_udp_t client;
48 static uv_udp_send_t req;
49 static uv_udp_send_t req_ss;
50
51 static int cl_recv_cb_called;
52
53 static int sv_send_cb_called;
54
55 static int close_cb_called;
56
alloc_cb(uv_handle_t * handle,size_t suggested_size,uv_buf_t * buf)57 static void alloc_cb(uv_handle_t* handle,
58 size_t suggested_size,
59 uv_buf_t* buf) {
60 static char slab[65536];
61 CHECK_HANDLE(handle);
62 ASSERT_LE(suggested_size, sizeof(slab));
63 buf->base = slab;
64 buf->len = sizeof(slab);
65 }
66
67
close_cb(uv_handle_t * handle)68 static void close_cb(uv_handle_t* handle) {
69 CHECK_HANDLE(handle);
70 close_cb_called++;
71 }
72
73
sv_send_cb(uv_udp_send_t * req,int status)74 static void sv_send_cb(uv_udp_send_t* req, int status) {
75 ASSERT_NOT_NULL(req);
76 ASSERT_OK(status);
77 CHECK_HANDLE(req->handle);
78
79 sv_send_cb_called++;
80
81 if (sv_send_cb_called == 2)
82 uv_close((uv_handle_t*) req->handle, close_cb);
83 }
84
85
do_send(uv_udp_send_t * send_req)86 static int do_send(uv_udp_send_t* send_req) {
87 uv_buf_t buf;
88 struct sockaddr_in6 addr;
89
90 buf = uv_buf_init("PING", 4);
91
92 ASSERT_OK(uv_ip6_addr(MULTICAST_ADDR, TEST_PORT, &addr));
93
94 /* client sends "PING" */
95 return uv_udp_send(send_req,
96 &client,
97 &buf,
98 1,
99 (const struct sockaddr*) &addr,
100 sv_send_cb);
101 }
102
103
cl_recv_cb(uv_udp_t * handle,ssize_t nread,const uv_buf_t * buf,const struct sockaddr * addr,unsigned flags)104 static void cl_recv_cb(uv_udp_t* handle,
105 ssize_t nread,
106 const uv_buf_t* buf,
107 const struct sockaddr* addr,
108 unsigned flags) {
109 CHECK_HANDLE(handle);
110 ASSERT_OK(flags);
111
112 if (nread < 0) {
113 ASSERT(0 && "unexpected error");
114 }
115
116 if (nread == 0) {
117 /* Returning unused buffer. Don't count towards cl_recv_cb_called */
118 ASSERT_NULL(addr);
119 return;
120 }
121
122 ASSERT_NOT_NULL(addr);
123 ASSERT_EQ(4, nread);
124 ASSERT(!memcmp("PING", buf->base, nread));
125
126 cl_recv_cb_called++;
127
128 if (cl_recv_cb_called == 2) {
129 /* we are done with the server handle, we can close it */
130 uv_close((uv_handle_t*) &server, close_cb);
131 } else {
132 int r;
133 char source_addr[64];
134
135 r = uv_ip6_name((const struct sockaddr_in6*)addr, source_addr, sizeof(source_addr));
136 ASSERT_OK(r);
137
138 r = uv_udp_set_membership(&server, MULTICAST_ADDR, INTERFACE_ADDR, UV_LEAVE_GROUP);
139 ASSERT_OK(r);
140
141 r = uv_udp_set_source_membership(&server, MULTICAST_ADDR, INTERFACE_ADDR, source_addr, UV_JOIN_GROUP);
142 ASSERT_OK(r);
143
144 r = do_send(&req_ss);
145 ASSERT_OK(r);
146 }
147 }
148
149
can_ipv6_external(void)150 static int can_ipv6_external(void) {
151 uv_interface_address_t* addr;
152 int supported;
153 int count;
154 int i;
155
156 if (uv_interface_addresses(&addr, &count))
157 return 0; /* Assume no IPv6 support on failure. */
158
159 supported = 0;
160 for (i = 0; supported == 0 && i < count; i += 1)
161 supported = (AF_INET6 == addr[i].address.address6.sin6_family &&
162 !addr[i].is_internal);
163
164 uv_free_interface_addresses(addr, count);
165 return supported;
166 }
167
168
TEST_IMPL(udp_multicast_join6)169 TEST_IMPL(udp_multicast_join6) {
170 int r;
171 struct sockaddr_in6 addr;
172
173 if (!can_ipv6_external())
174 RETURN_SKIP("No external IPv6 interface available");
175
176 ASSERT_OK(uv_ip6_addr("::", TEST_PORT, &addr));
177
178 r = uv_udp_init(uv_default_loop(), &server);
179 ASSERT_OK(r);
180
181 r = uv_udp_init(uv_default_loop(), &client);
182 ASSERT_OK(r);
183
184 /* bind to the desired port */
185 r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0);
186 ASSERT_OK(r);
187
188 r = uv_udp_set_membership(&server, MULTICAST_ADDR, INTERFACE_ADDR, UV_JOIN_GROUP);
189 if (r == UV_ENODEV) {
190 MAKE_VALGRIND_HAPPY(uv_default_loop());
191 RETURN_SKIP("No ipv6 multicast route");
192 }
193
194 ASSERT_OK(r);
195
196 #if defined(__ANDROID__)
197 /* It returns an ENOSYS error */
198 RETURN_SKIP("Test does not currently work in ANDROID");
199 #endif
200
201 /* TODO(gengjiawen): Fix test on QEMU. */
202 #if defined(__QEMU__)
203 RETURN_SKIP("Test does not currently work in QEMU");
204 #endif
205 r = uv_udp_recv_start(&server, alloc_cb, cl_recv_cb);
206 ASSERT_OK(r);
207
208 r = do_send(&req);
209 ASSERT_OK(r);
210
211 ASSERT_OK(close_cb_called);
212 ASSERT_OK(cl_recv_cb_called);
213 ASSERT_OK(sv_send_cb_called);
214
215 /* run the loop till all events are processed */
216 uv_run(uv_default_loop(), UV_RUN_DEFAULT);
217
218 ASSERT_EQ(2, cl_recv_cb_called);
219 ASSERT_EQ(2, sv_send_cb_called);
220 ASSERT_EQ(2, close_cb_called);
221
222 MAKE_VALGRIND_HAPPY(uv_default_loop());
223 return 0;
224 }
225
