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 <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 #define ACCF_NAME "dataready" 43 44 /* 45 * A number of small tests to confirm that attaching ACCF_DATA accept filters 46 * to inet4 ports works as expected. We test: 47 * 48 * - That no accept filter is attached on a newly created socket. 49 * - That bind() has no affect on the accept filter state. 50 * - That we can't attach an accept filter to a socket that isn't in the 51 * listen state. 52 * - That after we fail to attach the filter, querying the kernel shows no 53 * filter attached. 54 * - That we can attach an accept filter to a socket that is in the listen 55 * state. 56 * - That once an accept filter is attached, we can query to make sure it is 57 * attached. 58 * - That once an accept filter is attached, we can remove it and query to 59 * make sure it is removed. 60 */ 61 int 62 main(void) 63 { 64 struct accept_filter_arg afa; 65 struct sockaddr_in sin; 66 socklen_t len; 67 int lso, ret; 68 69 /* XXX: PLAIN_TEST_REQUIRE_MODULE "backport" for stable/9 */ 70 const char *_mod_name = "accf_data"; 71 72 if (modfind(_mod_name) == -1) { 73 printf("1..0 # SKIP - module %s could not be resolved: %s\n", 74 _mod_name, strerror(errno)); 75 _exit(0); 76 } 77 /* XXX: PLAIN_TEST_REQUIRE_MODULE for stable/9 */ 78 79 printf("1..11\n"); 80 81 /* 82 * Step 0. Open socket(). 83 */ 84 lso = socket(PF_INET, SOCK_STREAM, 0); 85 if (lso == -1) 86 errx(-1, "not ok 1 - socket: %s", strerror(errno)); 87 printf("ok 1 - socket\n"); 88 89 /* 90 * Step 1. After socket(). Should return EINVAL, since no accept 91 * filter should be attached. 92 */ 93 bzero(&afa, sizeof(afa)); 94 len = sizeof(afa); 95 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 96 if (ret != -1) 97 errx(-1, "not ok 2 - getsockopt() after socket() succeeded"); 98 if (errno != EINVAL) 99 errx(-1, "not ok 2 - getsockopt() after socket() failed with " 100 "%d (%s)", errno, strerror(errno)); 101 printf("ok 2 - getsockopt\n"); 102 103 /* 104 * Step 2. Bind(). Ideally this will succeed. 105 */ 106 bzero(&sin, sizeof(sin)); 107 sin.sin_len = sizeof(sin); 108 sin.sin_family = AF_INET; 109 sin.sin_port = htons(8080); 110 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 111 if (bind(lso, (struct sockaddr *)&sin, sizeof(sin)) < 0) 112 errx(-1, "not ok 3 - bind %s", strerror(errno)); 113 printf("ok 3 - bind\n"); 114 115 /* 116 * Step 3: After bind(). getsockopt() should return EINVAL, since no 117 * accept filter should be attached. 118 */ 119 len = sizeof(afa); 120 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 121 if (ret != -1) 122 errx(-1, "not ok 4 - getsockopt() after bind() succeeded"); 123 if (errno != EINVAL) 124 errx(-1, "not ok 4 - getsockopt() after bind() failed with %d (%s)", 125 errno, strerror(errno)); 126 printf("ok 4 - getsockopt\n"); 127 128 /* 129 * Step 4: Setsockopt() before listen(). Should fail, since it's not 130 * yet a listen() socket. 131 */ 132 bzero(&afa, sizeof(afa)); 133 strncpy(afa.af_name, ACCF_NAME, sizeof(afa.af_name)); 134 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 135 if (ret == 0) 136 errx(-1, "not ok 5 - setsockopt() before listen() succeeded"); 137 printf("ok 5 - setsockopt\n"); 138 139 /* 140 * Step 5: Getsockopt() after pre-listen() setsockopt(). Should 141 * fail with EINVAL, since setsockopt() should have failed. 142 */ 143 len = sizeof(afa); 144 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 145 if (ret == 0) 146 errx(-1, "not ok 6 - getsockopt() after pre-listen() setsockopt() " 147 "succeeded"); 148 if (errno != EINVAL) 149 errx(-1, "not ok 6 - pre-listen() getsockopt() failed with %d (%s)", 150 errno, strerror(errno)); 151 printf("ok 6 - getsockopt\n"); 152 153 /* 154 * Step 6: listen(). 155 */ 156 if (listen(lso, -1) < 0) 157 errx(-1, "not ok 7 - listen: %s", strerror(errno)); 158 printf("ok 7 - listen\n"); 159 160 /* 161 * Step 7: Getsockopt() after listen(). Should fail with EINVAL, 162 * since we have not installed accept filter yet. 163 */ 164 len = sizeof(afa); 165 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 166 if (ret == 0) 167 errx(-1, "not ok 8 - getsockopt() after listen() but before " 168 "setsockopt() succeeded"); 169 if (errno != EINVAL) 170 errx(-1, "not ok 8 - getsockopt() after listen() but before " 171 "setsockopt() failed with %d (%s)", errno, strerror(errno)); 172 printf("ok 8 - getsockopt\n"); 173 174 /* 175 * Step 8: After listen(). This call to setsockopt() should succeed. 176 */ 177 bzero(&afa, sizeof(afa)); 178 strncpy(afa.af_name, ACCF_NAME, sizeof(afa.af_name)); 179 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 180 if (ret != 0) 181 errx(-1, "not ok 9 - setsockopt() after listen() failed with %d " 182 "(%s)", errno, strerror(errno)); 183 printf("ok 9 - setsockopt\n"); 184 185 /* 186 * Step 9: After setsockopt(). Should succeed and identify 187 * ACCF_NAME. 188 */ 189 bzero(&afa, sizeof(afa)); 190 len = sizeof(afa); 191 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 192 if (ret != 0) 193 errx(-1, "not ok 10 - getsockopt() after listen() setsockopt() " 194 "failed with %d (%s)", errno, strerror(errno)); 195 if (len != sizeof(afa)) 196 errx(-1, "not ok 10 - getsockopt() after setsockopet() after " 197 "listen() returned wrong size (got %d expected %zd)", len, 198 sizeof(afa)); 199 if (strcmp(afa.af_name, ACCF_NAME) != 0) 200 errx(-1, "not ok 10 - getsockopt() after setsockopt() after " 201 "listen() mismatch (got %s expected %s)", afa.af_name, 202 ACCF_NAME); 203 printf("ok 10 - getsockopt\n"); 204 205 /* 206 * Step 10: Remove accept filter. After removing the accept filter 207 * getsockopt() should fail with EINVAL. 208 */ 209 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0); 210 if (ret != 0) 211 errx(-1, "not ok 11 - setsockopt() after listen() " 212 "failed with %d (%s)", errno, strerror(errno)); 213 bzero(&afa, sizeof(afa)); 214 len = sizeof(afa); 215 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 216 if (ret == 0) 217 errx(-1, "not ok 11 - getsockopt() after removing " 218 "the accept filter returns valid accept filter %s", 219 afa.af_name); 220 if (errno != EINVAL) 221 errx(-1, "not ok 11 - getsockopt() after removing the accept" 222 "filter failed with %d (%s)", errno, strerror(errno)); 223 printf("ok 11 - setsockopt\n"); 224 225 close(lso); 226 return (0); 227 } 228