1 /*- 2 * Copyright (c) 2004 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/types.h> 30 #include <sys/module.h> 31 #include <sys/socket.h> 32 33 #include <netinet/in.h> 34 35 #include <err.h> 36 #include <errno.h> 37 #include <fcntl.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 #define ACCF_NAME "dataready" 44 45 /* 46 * A number of small tests to confirm that attaching ACCF_DATA accept filters 47 * to inet4 ports works as expected. We test: 48 * 49 * - That no accept filter is attached on a newly created socket. 50 * - That bind() has no affect on the accept filter state. 51 * - That we can't attach an accept filter to a socket that isn't in the 52 * listen state. 53 * - That after we fail to attach the filter, querying the kernel shows no 54 * filter attached. 55 * - That we can attach an accept filter to a socket that is in the listen 56 * state. 57 * - That once an accept filter is attached, we can query to make sure it is 58 * attached. 59 * - That once an accept filter is attached, we can remove it and query to 60 * make sure it is removed. 61 */ 62 int 63 main(void) 64 { 65 struct accept_filter_arg afa; 66 struct sockaddr_in sin; 67 socklen_t len; 68 int lso, so, i, ret; 69 70 /* XXX: PLAIN_TEST_REQUIRE_MODULE "backport" for stable/9 */ 71 const char *_mod_name = "accf_data"; 72 73 if (modfind(_mod_name) == -1) { 74 printf("1..0 # SKIP - module %s could not be resolved: %s\n", 75 _mod_name, strerror(errno)); 76 _exit(0); 77 } 78 /* XXX: PLAIN_TEST_REQUIRE_MODULE for stable/9 */ 79 80 printf("1..12\n"); 81 82 /* 83 * Step 0. Open socket(). 84 */ 85 lso = socket(PF_INET, SOCK_STREAM, 0); 86 if (lso == -1) 87 errx(-1, "not ok 1 - socket: %s", strerror(errno)); 88 printf("ok 1 - socket\n"); 89 90 /* 91 * Step 1. After socket(). Should return EINVAL, since no accept 92 * filter should be attached. 93 */ 94 bzero(&afa, sizeof(afa)); 95 len = sizeof(afa); 96 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 97 if (ret != -1) 98 errx(-1, "not ok 2 - getsockopt() after socket() succeeded"); 99 if (errno != EINVAL) 100 errx(-1, "not ok 2 - getsockopt() after socket() failed with " 101 "%d (%s)", errno, strerror(errno)); 102 printf("ok 2 - getsockopt\n"); 103 104 /* 105 * Step 2. Bind(). Ideally this will succeed. 106 */ 107 setsockopt(lso, SOL_SOCKET, SO_REUSEADDR, &lso, sizeof(lso)); 108 bzero(&sin, sizeof(sin)); 109 sin.sin_len = sizeof(sin); 110 sin.sin_family = AF_INET; 111 sin.sin_port = htons(8080); 112 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 113 if (bind(lso, (struct sockaddr *)&sin, sizeof(sin)) < 0) 114 errx(-1, "not ok 3 - bind %s", strerror(errno)); 115 printf("ok 3 - bind\n"); 116 117 /* 118 * Step 3: After bind(). getsockopt() should return EINVAL, since no 119 * accept filter should be attached. 120 */ 121 len = sizeof(afa); 122 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 123 if (ret != -1) 124 errx(-1, "not ok 4 - getsockopt() after bind() succeeded"); 125 if (errno != EINVAL) 126 errx(-1, "not ok 4 - getsockopt() after bind() failed with %d (%s)", 127 errno, strerror(errno)); 128 printf("ok 4 - getsockopt\n"); 129 130 /* 131 * Step 4: Setsockopt() before listen(). Should fail, since it's not 132 * yet a listen() socket. 133 */ 134 bzero(&afa, sizeof(afa)); 135 strncpy(afa.af_name, ACCF_NAME, sizeof(afa.af_name)); 136 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 137 if (ret == 0) 138 errx(-1, "not ok 5 - setsockopt() before listen() succeeded"); 139 printf("ok 5 - setsockopt\n"); 140 141 /* 142 * Step 5: Getsockopt() after pre-listen() setsockopt(). Should 143 * fail with EINVAL, since setsockopt() should have failed. 144 */ 145 len = sizeof(afa); 146 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 147 if (ret == 0) 148 errx(-1, "not ok 6 - getsockopt() after pre-listen() setsockopt() " 149 "succeeded"); 150 if (errno != EINVAL) 151 errx(-1, "not ok 6 - pre-listen() getsockopt() failed with %d (%s)", 152 errno, strerror(errno)); 153 printf("ok 6 - getsockopt\n"); 154 155 /* 156 * Step 6: listen(). 157 */ 158 if (listen(lso, -1) < 0) 159 errx(-1, "not ok 7 - listen: %s", strerror(errno)); 160 printf("ok 7 - listen\n"); 161 162 /* 163 * Step 7: Getsockopt() after listen(). Should fail with EINVAL, 164 * since we have not installed accept filter yet. 165 */ 166 len = sizeof(afa); 167 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 168 if (ret == 0) 169 errx(-1, "not ok 8 - getsockopt() after listen() but before " 170 "setsockopt() succeeded"); 171 if (errno != EINVAL) 172 errx(-1, "not ok 8 - getsockopt() after listen() but before " 173 "setsockopt() failed with %d (%s)", errno, strerror(errno)); 174 printf("ok 8 - getsockopt\n"); 175 176 /* 177 * Step 8: After listen(). This call to setsockopt() should succeed. 178 */ 179 bzero(&afa, sizeof(afa)); 180 strncpy(afa.af_name, ACCF_NAME, sizeof(afa.af_name)); 181 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 182 if (ret != 0) 183 errx(-1, "not ok 9 - setsockopt() after listen() failed with %d " 184 "(%s)", errno, strerror(errno)); 185 printf("ok 9 - setsockopt\n"); 186 187 /* 188 * Step 9: After setsockopt(). Should succeed and identify 189 * ACCF_NAME. 190 */ 191 bzero(&afa, sizeof(afa)); 192 len = sizeof(afa); 193 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 194 if (ret != 0) 195 errx(-1, "not ok 10 - getsockopt() after listen() setsockopt() " 196 "failed with %d (%s)", errno, strerror(errno)); 197 if (len != sizeof(afa)) 198 errx(-1, "not ok 10 - getsockopt() after setsockopet() after " 199 "listen() returned wrong size (got %d expected %zd)", len, 200 sizeof(afa)); 201 if (strcmp(afa.af_name, ACCF_NAME) != 0) 202 errx(-1, "not ok 10 - getsockopt() after setsockopt() after " 203 "listen() mismatch (got %s expected %s)", afa.af_name, 204 ACCF_NAME); 205 printf("ok 10 - getsockopt\n"); 206 207 /* 208 * Step 10: Set listening socket to non blocking mode. Open 209 * connection to our listening socket and try to accept. Should 210 * no succeed. Write a byte of data and try again. Should accept. 211 */ 212 i = fcntl(lso, F_GETFL); 213 if (i < 0) 214 errx(-1, "not ok 11 - ioctl(F_GETFL): %s", strerror(errno)); 215 i |= O_NONBLOCK; 216 if (fcntl(lso, F_SETFL, i) != 0) 217 errx(-1, "not ok 11 - ioctl(F_SETFL): %s", strerror(errno)); 218 so = socket(PF_INET, SOCK_STREAM, 0); 219 if (so == -1) 220 errx(-1, "not ok 11 - socket: %s", strerror(errno)); 221 if (connect(so, (struct sockaddr *)&sin, sizeof(sin)) < 0) 222 errx(-1, "not ok 11 - connect %s", strerror(errno)); 223 if (accept(lso, NULL, 0) != -1 && errno != EWOULDBLOCK) 224 errx(-1, "not ok 11 - accept #1 %s", strerror(errno)); 225 if (write(so, "0", 1) != 1) 226 errx(-1, "not ok 11 - write %s", strerror(errno)); 227 /* 228 * XXXGL: ugly, but we need to make sure that our write reaches 229 * remote side of the socket. 230 */ 231 usleep(10000); 232 if (accept(lso, NULL, 0) < 1) 233 errx(-1, "not ok 11 - accept #2 %s", strerror(errno)); 234 printf("ok 11 - accept\n"); 235 236 #if 1 237 /* 238 * XXXGL: this doesn't belong to the test itself, but is known 239 * to examine rarely examined paths in the kernel. Intentionally 240 * leave a socket on the incomplete queue, before the program 241 * exits. 242 */ 243 so = socket(PF_INET, SOCK_STREAM, 0); 244 if (so == -1) 245 errx(-1, "not ok 12 - socket: %s", strerror(errno)); 246 if (connect(so, (struct sockaddr *)&sin, sizeof(sin)) < 0) 247 errx(-1, "not ok 12 - connect %s", strerror(errno)); 248 #endif 249 250 /* 251 * Step 11: Remove accept filter. After removing the accept filter 252 * getsockopt() should fail with EINVAL. 253 */ 254 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0); 255 if (ret != 0) 256 errx(-1, "not ok 12 - setsockopt() after listen() " 257 "failed with %d (%s)", errno, strerror(errno)); 258 bzero(&afa, sizeof(afa)); 259 len = sizeof(afa); 260 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 261 if (ret == 0) 262 errx(-1, "not ok 12 - getsockopt() after removing " 263 "the accept filter returns valid accept filter %s", 264 afa.af_name); 265 if (errno != EINVAL) 266 errx(-1, "not ok 12 - getsockopt() after removing the accept" 267 "filter failed with %d (%s)", errno, strerror(errno)); 268 printf("ok 12 - setsockopt\n"); 269 270 close(lso); 271 return (0); 272 } 273