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 */ 62int 63main(void) 64{ 65 struct accept_filter_arg afa; 66 struct sockaddr_in sin; 67 struct linger linger; 68 socklen_t len; 69 int lso, so, i, ret; 70 71 /* XXX: PLAIN_TEST_REQUIRE_MODULE "backport" for stable/9 */ 72 const char *_mod_name = "accf_data"; 73 74 if (modfind(_mod_name) == -1) { 75 printf("1..0 # SKIP - module %s could not be resolved: %s\n", 76 _mod_name, strerror(errno)); 77 _exit(0); 78 } 79 /* XXX: PLAIN_TEST_REQUIRE_MODULE for stable/9 */ 80 81 printf("1..12\n"); 82 83 /* 84 * Step 0. Open socket(). 85 */ 86 lso = socket(PF_INET, SOCK_STREAM, 0); 87 if (lso == -1) 88 errx(-1, "not ok 1 - socket: %s", strerror(errno)); 89 printf("ok 1 - socket\n"); 90 91 /* 92 * Step 1. After socket(). Should return EINVAL, since no accept 93 * filter should be attached. 94 */ 95 bzero(&afa, sizeof(afa)); 96 len = sizeof(afa); 97 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 98 if (ret != -1) 99 errx(-1, "not ok 2 - getsockopt() after socket() succeeded"); 100 if (errno != EINVAL) 101 errx(-1, "not ok 2 - getsockopt() after socket() failed with " 102 "%d (%s)", errno, strerror(errno)); 103 printf("ok 2 - getsockopt\n"); 104 105 /* 106 * Step 2. Bind(). Ideally this will succeed. 107 */ 108 setsockopt(lso, SOL_SOCKET, SO_REUSEADDR, &lso, sizeof(lso)); 109 bzero(&sin, sizeof(sin)); 110 sin.sin_len = sizeof(sin); 111 sin.sin_family = AF_INET; 112 sin.sin_port = htons(8080); 113 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 114 if (bind(lso, (struct sockaddr *)&sin, sizeof(sin)) < 0) 115 errx(-1, "not ok 3 - bind %s", strerror(errno)); 116 printf("ok 3 - bind\n"); 117 118 /* 119 * Step 3: After bind(). getsockopt() should return EINVAL, since no 120 * accept filter should be attached. 121 */ 122 len = sizeof(afa); 123 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 124 if (ret != -1) 125 errx(-1, "not ok 4 - getsockopt() after bind() succeeded"); 126 if (errno != EINVAL) 127 errx(-1, "not ok 4 - getsockopt() after bind() failed with %d (%s)", 128 errno, strerror(errno)); 129 printf("ok 4 - getsockopt\n"); 130 131 /* 132 * Step 4: Setsockopt() before listen(). Should fail, since it's not 133 * yet a listen() socket. 134 */ 135 bzero(&afa, sizeof(afa)); 136 strncpy(afa.af_name, ACCF_NAME, sizeof(afa.af_name)); 137 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 138 if (ret == 0) 139 errx(-1, "not ok 5 - setsockopt() before listen() succeeded"); 140 printf("ok 5 - setsockopt\n"); 141 142 /* 143 * Step 5: Getsockopt() after pre-listen() setsockopt(). Should 144 * fail with EINVAL, since setsockopt() should have failed. 145 */ 146 len = sizeof(afa); 147 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 148 if (ret == 0) 149 errx(-1, "not ok 6 - getsockopt() after pre-listen() setsockopt() " 150 "succeeded"); 151 if (errno != EINVAL) 152 errx(-1, "not ok 6 - pre-listen() getsockopt() failed with %d (%s)", 153 errno, strerror(errno)); 154 printf("ok 6 - getsockopt\n"); 155 156 /* 157 * Step 6: listen(). 158 */ 159 if (listen(lso, -1) < 0) 160 errx(-1, "not ok 7 - listen: %s", strerror(errno)); 161 printf("ok 7 - listen\n"); 162 163 /* 164 * Step 7: Getsockopt() after listen(). Should fail with EINVAL, 165 * since we have not installed accept filter yet. 166 */ 167 len = sizeof(afa); 168 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 169 if (ret == 0) 170 errx(-1, "not ok 8 - getsockopt() after listen() but before " 171 "setsockopt() succeeded"); 172 if (errno != EINVAL) 173 errx(-1, "not ok 8 - getsockopt() after listen() but before " 174 "setsockopt() failed with %d (%s)", errno, strerror(errno)); 175 printf("ok 8 - getsockopt\n"); 176 177 /* 178 * Step 8: After listen(). This call to setsockopt() should succeed. 179 */ 180 bzero(&afa, sizeof(afa)); 181 strncpy(afa.af_name, ACCF_NAME, sizeof(afa.af_name)); 182 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 183 if (ret != 0) 184 errx(-1, "not ok 9 - setsockopt() after listen() failed with %d " 185 "(%s)", errno, strerror(errno)); 186 printf("ok 9 - setsockopt\n"); 187 188 /* 189 * Step 9: After setsockopt(). Should succeed and identify 190 * ACCF_NAME. 191 */ 192 bzero(&afa, sizeof(afa)); 193 len = sizeof(afa); 194 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 195 if (ret != 0) 196 errx(-1, "not ok 10 - getsockopt() after listen() setsockopt() " 197 "failed with %d (%s)", errno, strerror(errno)); 198 if (len != sizeof(afa)) 199 errx(-1, "not ok 10 - getsockopt() after setsockopet() after " 200 "listen() returned wrong size (got %d expected %zd)", len, 201 sizeof(afa)); 202 if (strcmp(afa.af_name, ACCF_NAME) != 0) 203 errx(-1, "not ok 10 - getsockopt() after setsockopt() after " 204 "listen() mismatch (got %s expected %s)", afa.af_name, 205 ACCF_NAME); 206 printf("ok 10 - getsockopt\n"); 207 208 /* 209 * Step 10: Set listening socket to non blocking mode. Open 210 * connection to our listening socket and try to accept. Should 211 * no succeed. Write a byte of data and try again. Should accept. 212 */ 213 i = fcntl(lso, F_GETFL); 214 if (i < 0) 215 errx(-1, "not ok 11 - ioctl(F_GETFL): %s", strerror(errno)); 216 i |= O_NONBLOCK; 217 if (fcntl(lso, F_SETFL, i) != 0) 218 errx(-1, "not ok 11 - ioctl(F_SETFL): %s", strerror(errno)); 219 so = socket(PF_INET, SOCK_STREAM, 0); 220 if (so == -1) 221 errx(-1, "not ok 11 - socket: %s", strerror(errno)); 222 if (connect(so, (struct sockaddr *)&sin, sizeof(sin)) < 0) 223 errx(-1, "not ok 11 - connect %s", strerror(errno)); 224 if (accept(lso, NULL, 0) != -1 && errno != EWOULDBLOCK) 225 errx(-1, "not ok 11 - accept #1 %s", strerror(errno)); 226 if (write(so, "0", 1) != 1) 227 errx(-1, "not ok 11 - write %s", strerror(errno)); 228 /* 229 * XXXGL: ugly, but we need to make sure that our write reaches 230 * remote side of the socket. 231 */ 232 usleep(10000); 233 if (accept(lso, NULL, 0) < 1) 234 errx(-1, "not ok 11 - accept #2 %s", strerror(errno)); 235 if (close(so) != 0) 236 errx(-1, "not ok 11 - close(): %s", strerror(errno)); 237 printf("ok 11 - accept\n"); 238 239 /* 240 * Step 12: reset connection before accept filter allows it. 241 * In this case the connection must make it to the listen 242 * queue, but with ECONNABORTED code. 243 */ 244 so = socket(PF_INET, SOCK_STREAM, 0); 245 if (so == -1) 246 errx(-1, "not ok 12 - socket: %s", strerror(errno)); 247 if (connect(so, (struct sockaddr *)&sin, sizeof(sin)) < 0) 248 errx(-1, "not ok 12 - connect %s", strerror(errno)); 249 linger.l_onoff = 1; 250 linger.l_linger = 0; 251 ret = setsockopt(so, SOL_SOCKET, SO_LINGER, &linger, sizeof(linger)); 252 if (ret != 0) 253 errx(-1, "not ok 12 - setsockopt(SO_LINGER) failed with %d " 254 "(%s)", errno, strerror(errno)); 255 if (close(so) != 0) 256 errx(-1, "not ok 12 - close(): %s", strerror(errno)); 257 if (accept(lso, NULL, 0) != -1 && errno != ECONNABORTED) 258 errx(-1, "not ok 12 - accept #3 %s", strerror(errno)); 259 printf("ok 12 - accept\n"); 260 261#if 1 262 /* 263 * XXXGL: this doesn't belong to the test itself, but is known 264 * to examine rarely examined paths in the kernel. Intentionally 265 * leave a socket on the incomplete queue, before the program 266 * exits. 267 */ 268 so = socket(PF_INET, SOCK_STREAM, 0); 269 if (so == -1) 270 errx(-1, "not ok 13 - socket: %s", strerror(errno)); 271 if (connect(so, (struct sockaddr *)&sin, sizeof(sin)) < 0) 272 errx(-1, "not ok 13 - connect %s", strerror(errno)); 273#endif 274 275 /* 276 * Step 12: Remove accept filter. After removing the accept filter 277 * getsockopt() should fail with EINVAL. 278 */ 279 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0); 280 if (ret != 0) 281 errx(-1, "not ok 13 - setsockopt() after listen() " 282 "failed with %d (%s)", errno, strerror(errno)); 283 bzero(&afa, sizeof(afa)); 284 len = sizeof(afa); 285 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 286 if (ret == 0) 287 errx(-1, "not ok 13 - getsockopt() after removing " 288 "the accept filter returns valid accept filter %s", 289 afa.af_name); 290 if (errno != EINVAL) 291 errx(-1, "not ok 13 - getsockopt() after removing the accept" 292 "filter failed with %d (%s)", errno, strerror(errno)); 293 if (close(lso) != 0) 294 errx(-1, "not ok 13 - close() of listening socket: %s", 295 strerror(errno)); 296 printf("ok 13 - setsockopt\n"); 297 298 return (0); 299} 300