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 #ifndef UCLINUX
87 /* Skip since uClinux does not implement memory protection */
88 {
89 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)-1,
90 sizeof(struct sockaddr_in), -1, EFAULT, setup1,
91 cleanup1, "invalid socket buffer"},
92 #endif
93 {
94 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin1,
95 3, -1, EINVAL, setup1, cleanup1, "invalid salen"}, {
96 0, 0, 0, (struct sockaddr *)&sin1,
97 sizeof(sin1), -1, ENOTSOCK, setup0, cleanup0,
98 "invalid socket"}
99 , {
100 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin1,
101 sizeof(sin1), -1, EISCONN, setup2, cleanup1,
102 "already connected"}
103 , {
104 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin2,
105 sizeof(sin2), -1, ECONNREFUSED, setup1, cleanup1,
106 "connection refused"}
107 , {
108 PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&sin4,
109 sizeof(sin4), -1, EAFNOSUPPORT, setup1, cleanup1,
110 "invalid address family"}
111 ,};
112
113 int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
114
115 #ifdef UCLINUX
116 static char *argv0;
117 #endif
118
119 /**
120 * bionic's connect() implementation calls netdClientInitConnect() before
121 * sending the request to the kernel. We need to bypass this, or the test will
122 * segfault during the addr = (struct sockaddr *)-1 testcase. We had cases where
123 * tests started to segfault on glibc upgrade or in special conditions where
124 * libc had to convert structure layouts between 32bit/64bit userspace/kernel =>
125 * safer to call the raw syscall regardless of the libc implementation.
126 */
127 #include "lapi/syscalls.h"
128
sys_connect(int sockfd,const struct sockaddr * addr,socklen_t addrlen)129 static int sys_connect(int sockfd, const struct sockaddr *addr,
130 socklen_t addrlen)
131 {
132 return tst_syscall(__NR_connect, sockfd, addr, addrlen);
133 }
134
135 #define connect(sockfd, addr, addrlen) sys_connect(sockfd, addr, addrlen)
136
main(int argc,char * argv[])137 int main(int argc, char *argv[])
138 {
139 int lc;
140
141 tst_parse_opts(argc, argv, NULL, NULL);
142 #ifdef UCLINUX
143 argv0 = argv[0];
144 maybe_run_child(&do_child, "d", &sfd);
145 #endif
146
147 setup();
148
149 for (lc = 0; TEST_LOOPING(lc); ++lc) {
150 tst_count = 0;
151 for (testno = 0; testno < TST_TOTAL; ++testno) {
152 tdat[testno].setup();
153
154 TEST(connect
155 (s, tdat[testno].sockaddr, tdat[testno].salen));
156
157 if (TEST_RETURN != tdat[testno].retval ||
158 (TEST_RETURN < 0 &&
159 TEST_ERRNO != tdat[testno].experrno)) {
160 tst_resm(TFAIL, "%s ; returned"
161 " %ld (expected %d), errno %d (expected"
162 " %d)", tdat[testno].desc,
163 TEST_RETURN, tdat[testno].retval,
164 TEST_ERRNO, tdat[testno].experrno);
165 } else {
166 tst_resm(TPASS, "%s successful",
167 tdat[testno].desc);
168 }
169 tdat[testno].cleanup();
170 }
171 }
172 cleanup();
173
174 tst_exit();
175 }
176
177 pid_t pid;
178
setup(void)179 void setup(void)
180 {
181 TEST_PAUSE; /* if -p option specified */
182
183 pid = start_server(&sin1);
184
185 sin2.sin_family = AF_INET;
186 /* this port must be unused! */
187 sin2.sin_port = TST_GET_UNUSED_PORT(NULL, AF_INET, SOCK_STREAM);
188 sin2.sin_addr.s_addr = INADDR_ANY;
189
190 sin3.sin_family = AF_INET;
191 sin3.sin_port = 0;
192 /* assumes no route to this network! */
193 sin3.sin_addr.s_addr = htonl(0x0AFFFEFD);
194
195 sin4.sin_family = 47; /* bogus address family */
196 sin4.sin_port = 0;
197 sin4.sin_addr.s_addr = htonl(0x0AFFFEFD);
198
199 }
200
cleanup(void)201 void cleanup(void)
202 {
203 (void)kill(pid, SIGKILL);
204
205 }
206
setup0(void)207 void setup0(void)
208 {
209 if (tdat[testno].experrno == EBADF)
210 s = 400; /* anything not an open file */
211 else if ((s = open("/dev/null", O_WRONLY)) == -1)
212 tst_brkm(TBROK | TERRNO, cleanup, "open(/dev/null) failed");
213
214 }
215
cleanup0(void)216 void cleanup0(void)
217 {
218 close(s);
219 s = -1;
220 }
221
setup1(void)222 void setup1(void)
223 {
224 s = SAFE_SOCKET(cleanup, tdat[testno].domain, tdat[testno].type,
225 tdat[testno].proto);
226 }
227
cleanup1(void)228 void cleanup1(void)
229 {
230 (void)close(s);
231 s = -1;
232 }
233
setup2(void)234 void setup2(void)
235 {
236 setup1(); /* get a socket in s */
237 SAFE_CONNECT(cleanup, s, (const struct sockaddr *)&sin1, sizeof(sin1));
238 }
239
start_server(struct sockaddr_in * sin0)240 pid_t start_server(struct sockaddr_in *sin0)
241 {
242 pid_t pid;
243 socklen_t slen = sizeof(*sin0);
244
245 sin0->sin_family = AF_INET;
246 sin0->sin_port = 0; /* pick random free port */
247 sin0->sin_addr.s_addr = INADDR_ANY;
248
249 sfd = socket(PF_INET, SOCK_STREAM, 0);
250 if (sfd < 0) {
251 tst_brkm(TBROK | TERRNO, cleanup, "server socket failed");
252 return -1;
253 }
254 if (bind(sfd, (struct sockaddr *)sin0, sizeof(*sin0)) < 0) {
255 tst_brkm(TBROK | TERRNO, cleanup, "server bind failed");
256 return -1;
257 }
258 if (listen(sfd, 10) < 0) {
259 tst_brkm(TBROK | TERRNO, cleanup, "server listen failed");
260 return -1;
261 }
262 SAFE_GETSOCKNAME(cleanup, sfd, (struct sockaddr *)sin0, &slen);
263
264 switch ((pid = FORK_OR_VFORK())) {
265 case 0: /* child */
266 #ifdef UCLINUX
267 self_exec(argv0, "d", sfd);
268 #else
269 do_child();
270 #endif
271 break;
272 case -1:
273 tst_brkm(TBROK | TERRNO, cleanup, "server fork failed");
274 /* fall through */
275 default: /* parent */
276 (void)close(sfd);
277 return pid;
278 }
279
280 return -1;
281 }
282
do_child(void)283 void do_child(void)
284 {
285 struct sockaddr_in fsin;
286 fd_set afds, rfds;
287 int nfds, cc, fd;
288 char c;
289
290 FD_ZERO(&afds);
291 FD_SET(sfd, &afds);
292
293 nfds = sfd + 1;
294
295 /* accept connections until killed */
296 while (1) {
297 socklen_t fromlen;
298
299 memcpy(&rfds, &afds, sizeof(rfds));
300
301 if (select(nfds, &rfds, NULL, NULL,
302 NULL) < 0)
303 if (errno != EINTR)
304 exit(1);
305 if (FD_ISSET(sfd, &rfds)) {
306 int newfd;
307
308 fromlen = sizeof(fsin);
309 newfd = accept(sfd, (struct sockaddr *)&fsin, &fromlen);
310 if (newfd >= 0) {
311 FD_SET(newfd, &afds);
312 nfds = MAX(nfds, newfd + 1);
313 }
314 }
315 for (fd = 0; fd < nfds; ++fd)
316 if (fd != sfd && FD_ISSET(fd, &rfds)) {
317 if ((cc = read(fd, &c, 1)) == 0) {
318 (void)close(fd);
319 FD_CLR(fd, &afds);
320 }
321 }
322 }
323 }
324