1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * Test Name: connect01
22 *
23 * Test Description:
24 * Verify that connect() returns the proper errno for various failure cases
25 *
26 * Usage: <for command-line>
27 * connect01 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
28 * where, -c n : Run n copies concurrently.
29 * -e : Turn on errno logging.
30 * -i n : Execute test n times.
31 * -I x : Execute test for x seconds.
32 * -P x : Pause for x seconds between iterations.
33 * -t : Turn on syscall timing.
34 *
35 * HISTORY
36 * 07/2001 Ported by Wayne Boyer
37 *
38 * RESTRICTIONS:
39 * None.
40 *
41 */
42
43 #include <stdio.h>
44 #include <unistd.h>
45 #include <errno.h>
46 #include <fcntl.h>
47
48 #include <sys/types.h>
49 #include <sys/socket.h>
50 #include <sys/signal.h>
51 #include <sys/un.h>
52
53 #include <netinet/in.h>
54
55 #include "test.h"
56 #include "safe_macros.h"
57
58 char *TCID = "connect01";
59 int testno;
60
61 int s, s2; /* socket descriptor */
62 struct sockaddr_in sin1, sin2, sin3, sin4;
63 static int sfd; /* shared between start_server and do_child */
64
65 void setup(void), setup0(void), setup1(void), setup2(void),
66 cleanup(void), cleanup0(void), cleanup1(void), do_child(void);
67
68 static pid_t start_server(struct sockaddr_in *);
69
70 struct test_case_t { /* test case structure */
71 int domain; /* PF_INET, PF_UNIX, ... */
72 int type; /* SOCK_STREAM, SOCK_DGRAM ... */
73 int proto; /* protocol number (usually 0 = default) */
74 struct sockaddr *sockaddr; /* socket address buffer */
75 int salen; /* connect's 3rd argument */
76 int retval; /* syscall return value */
77 int experrno; /* expected errno */
78 void (*setup) (void);
79 void (*cleanup) (void);
80 char *desc;
81 } tdat[] = {
82 {
83 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin1,
84 sizeof(struct sockaddr_in), -1, EBADF, setup0,
85 cleanup0, "bad file descriptor"},
86 {
87 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)-1,
88 sizeof(struct sockaddr_in), -1, EFAULT, setup1,
89 cleanup1, "invalid socket buffer"},
90 {
91 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin1,
92 3, -1, EINVAL, setup1, cleanup1, "invalid salen"}, {
93 0, 0, 0, (struct sockaddr *)&sin1,
94 sizeof(sin1), -1, ENOTSOCK, setup0, cleanup0,
95 "invalid socket"}
96 , {
97 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin1,
98 sizeof(sin1), -1, EISCONN, setup2, cleanup1,
99 "already connected"}
100 , {
101 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin2,
102 sizeof(sin2), -1, ECONNREFUSED, setup1, cleanup1,
103 "connection refused"}
104 , {
105 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin4,
106 sizeof(sin4), -1, EAFNOSUPPORT, setup1, cleanup1,
107 "invalid address family"}
108 ,};
109
110 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
111
112 /**
113 * bionic's connect() implementation calls netdClientInitConnect() before
114 * sending the request to the kernel. We need to bypass this, or the test will
115 * segfault during the addr = (struct sockaddr *)-1 testcase. We had cases where
116 * tests started to segfault on glibc upgrade or in special conditions where
117 * libc had to convert structure layouts between 32bit/64bit userspace/kernel =>
118 * safer to call the raw syscall regardless of the libc implementation.
119 */
120 #include "lapi/syscalls.h"
121
sys_connect(int sockfd,const struct sockaddr * addr,socklen_t addrlen)122 static int sys_connect(int sockfd, const struct sockaddr *addr,
123 socklen_t addrlen)
124 {
125 return tst_syscall(__NR_connect, sockfd, addr, addrlen);
126 }
127
128 #define connect(sockfd, addr, addrlen) sys_connect(sockfd, addr, addrlen)
129
main(int argc,char * argv[])130 int main(int argc, char *argv[])
131 {
132 int lc;
133
134 tst_parse_opts(argc, argv, NULL, NULL);
135
136 setup();
137
138 for (lc = 0; TEST_LOOPING(lc); ++lc) {
139 tst_count = 0;
140 for (testno = 0; testno < TST_TOTAL; ++testno) {
141 tdat[testno].setup();
142
143 TEST(connect
144 (s, tdat[testno].sockaddr, tdat[testno].salen));
145
146 if (TEST_RETURN != tdat[testno].retval ||
147 (TEST_RETURN < 0 &&
148 TEST_ERRNO != tdat[testno].experrno)) {
149 tst_resm(TFAIL, "%s ; returned"
150 " %ld (expected %d), errno %d (expected"
151 " %d)", tdat[testno].desc,
152 TEST_RETURN, tdat[testno].retval,
153 TEST_ERRNO, tdat[testno].experrno);
154 } else {
155 tst_resm(TPASS, "%s successful",
156 tdat[testno].desc);
157 }
158 tdat[testno].cleanup();
159 }
160 }
161 cleanup();
162
163 tst_exit();
164 }
165
166 pid_t pid;
167
setup(void)168 void setup(void)
169 {
170 TEST_PAUSE; /* if -p option specified */
171
172 pid = start_server(&sin1);
173
174 sin2.sin_family = AF_INET;
175 /* this port must be unused! */
176 sin2.sin_port = TST_GET_UNUSED_PORT(NULL, AF_INET, SOCK_STREAM);
177 sin2.sin_addr.s_addr = INADDR_ANY;
178
179 sin3.sin_family = AF_INET;
180 sin3.sin_port = 0;
181 /* assumes no route to this network! */
182 sin3.sin_addr.s_addr = htonl(0x0AFFFEFD);
183
184 sin4.sin_family = 47; /* bogus address family */
185 sin4.sin_port = 0;
186 sin4.sin_addr.s_addr = htonl(0x0AFFFEFD);
187
188 }
189
cleanup(void)190 void cleanup(void)
191 {
192 (void)kill(pid, SIGKILL);
193
194 }
195
setup0(void)196 void setup0(void)
197 {
198 if (tdat[testno].experrno == EBADF)
199 s = 400; /* anything not an open file */
200 else if ((s = open("/dev/null", O_WRONLY)) == -1)
201 tst_brkm(TBROK | TERRNO, cleanup, "open(/dev/null) failed");
202
203 }
204
cleanup0(void)205 void cleanup0(void)
206 {
207 close(s);
208 s = -1;
209 }
210
setup1(void)211 void setup1(void)
212 {
213 s = SAFE_SOCKET(cleanup, tdat[testno].domain, tdat[testno].type,
214 tdat[testno].proto);
215 }
216
cleanup1(void)217 void cleanup1(void)
218 {
219 (void)close(s);
220 s = -1;
221 }
222
setup2(void)223 void setup2(void)
224 {
225 setup1(); /* get a socket in s */
226 SAFE_CONNECT(cleanup, s, (const struct sockaddr *)&sin1, sizeof(sin1));
227 }
228
start_server(struct sockaddr_in * sin0)229 pid_t start_server(struct sockaddr_in *sin0)
230 {
231 pid_t pid;
232 socklen_t slen = sizeof(*sin0);
233
234 sin0->sin_family = AF_INET;
235 sin0->sin_port = 0; /* pick random free port */
236 sin0->sin_addr.s_addr = INADDR_ANY;
237
238 sfd = socket(PF_INET, SOCK_STREAM, 0);
239 if (sfd < 0) {
240 tst_brkm(TBROK | TERRNO, cleanup, "server socket failed");
241 return -1;
242 }
243 if (bind(sfd, (struct sockaddr *)sin0, sizeof(*sin0)) < 0) {
244 tst_brkm(TBROK | TERRNO, cleanup, "server bind failed");
245 return -1;
246 }
247 if (listen(sfd, 10) < 0) {
248 tst_brkm(TBROK | TERRNO, cleanup, "server listen failed");
249 return -1;
250 }
251 SAFE_GETSOCKNAME(cleanup, sfd, (struct sockaddr *)sin0, &slen);
252
253 switch ((pid = tst_fork())) {
254 case 0: /* child */
255 do_child();
256 break;
257 case -1:
258 tst_brkm(TBROK | TERRNO, cleanup, "server fork failed");
259 /* fall through */
260 default: /* parent */
261 (void)close(sfd);
262 return pid;
263 }
264
265 return -1;
266 }
267
do_child(void)268 void do_child(void)
269 {
270 struct sockaddr_in fsin;
271 fd_set afds, rfds;
272 int nfds, cc, fd;
273 char c;
274
275 FD_ZERO(&afds);
276 FD_SET(sfd, &afds);
277
278 nfds = sfd + 1;
279
280 /* accept connections until killed */
281 while (1) {
282 socklen_t fromlen;
283
284 memcpy(&rfds, &afds, sizeof(rfds));
285
286 if (select(nfds, &rfds, NULL, NULL,
287 NULL) < 0)
288 if (errno != EINTR)
289 exit(1);
290 if (FD_ISSET(sfd, &rfds)) {
291 int newfd;
292
293 fromlen = sizeof(fsin);
294 newfd = accept(sfd, (struct sockaddr *)&fsin, &fromlen);
295 if (newfd >= 0) {
296 FD_SET(newfd, &afds);
297 nfds = MAX(nfds, newfd + 1);
298 }
299 }
300 for (fd = 0; fd < nfds; ++fd)
301 if (fd != sfd && FD_ISSET(fd, &rfds)) {
302 if ((cc = read(fd, &c, 1)) == 0) {
303 (void)close(fd);
304 FD_CLR(fd, &afds);
305 }
306 }
307 }
308 }
309