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/socket.h> 31 32 #include <netinet/in.h> 33 34 #include <err.h> 35 #include <errno.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <unistd.h> 40 41 #define ACCF_NAME "dataready" 42 43 /* 44 * A number of small tests to confirm that attaching ACCF_DATA accept filters 45 * to inet4 ports works as expected. We test: 46 * 47 * - That no accept filter is attached on a newly created socket. 48 * - That bind() has no affect on the accept filter state. 49 * - That we can't attach an accept filter to a socket that isn't in the 50 * listen state. 51 * - That after we fail to attach the filter, querying the kernel shows no 52 * filter attached. 53 * - That we can attach an accept filter to a socket that is in the listen 54 * state. 55 * - That once an accept filter is attached, we can query to make sure it is 56 * attached. 57 * - That once an accept filter is attached, we can remove it and query to 58 * make sure it is removed. 59 */ 60 int 61 main(void) 62 { 63 struct accept_filter_arg afa; 64 struct sockaddr_in sin; 65 socklen_t len; 66 int lso, ret; 67 68 printf("1..11\n"); 69 70 /* 71 * Step 0. Open socket(). 72 */ 73 lso = socket(PF_INET, SOCK_STREAM, 0); 74 if (lso == -1) 75 errx(-1, "not ok 1 - socket: %s", strerror(errno)); 76 printf("ok 1 - socket\n"); 77 78 /* 79 * Step 1. After socket(). Should return EINVAL, since no accept 80 * filter should be attached. 81 */ 82 bzero(&afa, sizeof(afa)); 83 len = sizeof(afa); 84 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 85 if (ret != -1) 86 errx(-1, "not ok 2 - getsockopt() after socket() succeeded"); 87 if (errno != EINVAL) 88 errx(-1, "not ok 2 - getsockopt() after socket() failed with " 89 "%d (%s)", errno, strerror(errno)); 90 printf("ok 2 - getsockopt\n"); 91 92 /* 93 * Step 2. Bind(). Ideally this will succeed. 94 */ 95 bzero(&sin, sizeof(sin)); 96 sin.sin_len = sizeof(sin); 97 sin.sin_family = AF_INET; 98 sin.sin_port = htons(8080); 99 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 100 if (bind(lso, (struct sockaddr *)&sin, sizeof(sin)) < 0) 101 errx(-1, "not ok 3 - bind %s", strerror(errno)); 102 printf("ok 3 - bind\n"); 103 104 /* 105 * Step 3: After bind(). getsockopt() should return EINVAL, since no 106 * accept filter should be attached. 107 */ 108 len = sizeof(afa); 109 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 110 if (ret != -1) 111 errx(-1, "not ok 4 - getsockopt() after bind() succeeded"); 112 if (errno != EINVAL) 113 errx(-1, "not ok 4 - getsockopt() after bind() failed with %d (%s)", 114 errno, strerror(errno)); 115 printf("ok 4 - getsockopt\n"); 116 117 /* 118 * Step 4: Setsockopt() before listen(). Should fail, since it's not 119 * yet a listen() socket. 120 */ 121 bzero(&afa, sizeof(afa)); 122 strcpy(afa.af_name, ACCF_NAME); 123 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 124 if (ret == 0) 125 errx(-1, "not ok 5 - setsockopt() before listen() succeeded"); 126 printf("ok 5 - setsockopt\n"); 127 128 /* 129 * Step 5: Getsockopt() after pre-listen() setsockopt(). Should 130 * fail with EINVAL, since setsockopt() should have failed. 131 */ 132 len = sizeof(afa); 133 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 134 if (ret == 0) 135 errx(-1, "not ok 6 - getsockopt() after pre-listen() setsockopt() " 136 "succeeded"); 137 if (errno != EINVAL) 138 errx(-1, "not ok 6 - pre-listen() getsockopt() failed with %d (%s)", 139 errno, strerror(errno)); 140 printf("ok 6 - getsockopt\n"); 141 142 /* 143 * Step 6: listen(). 144 */ 145 if (listen(lso, -1) < 0) 146 errx(-1, "not ok 7 - listen: %s", strerror(errno)); 147 printf("ok 7 - listen\n"); 148 149 /* 150 * Step 7: Getsockopt() after listen(). Should fail with EINVAL, 151 * since we have not installed accept filter yet. 152 */ 153 len = sizeof(afa); 154 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 155 if (ret == 0) 156 errx(-1, "not ok 8 - getsockopt() after listen() but before " 157 "setsockopt() succeeded"); 158 if (errno != EINVAL) 159 errx(-1, "not ok 8 - getsockopt() after listen() but before " 160 "setsockopt() failed with %d (%s)", errno, strerror(errno)); 161 printf("ok 8 - getsockopt\n"); 162 163 /* 164 * Step 8: After listen(). This call to setsockopt() should succeed. 165 */ 166 bzero(&afa, sizeof(afa)); 167 strcpy(afa.af_name, ACCF_NAME); 168 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 169 if (ret != 0) 170 errx(-1, "not ok 9 - setsockopt() after listen() failed with %d " 171 "(%s)", errno, strerror(errno)); 172 printf("ok 9 - setsockopt\n"); 173 174 /* 175 * Step 9: After setsockopt(). Should succeed and identify 176 * ACCF_NAME. 177 */ 178 bzero(&afa, sizeof(afa)); 179 len = sizeof(afa); 180 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 181 if (ret != 0) 182 errx(-1, "not ok 10 - getsockopt() after listen() setsockopt() " 183 "failed with %d (%s)", errno, strerror(errno)); 184 if (len != sizeof(afa)) 185 errx(-1, "not ok 10 - getsockopt() after setsockopet() after " 186 "listen() returned wrong size (got %d expected %zd)", len, 187 sizeof(afa)); 188 if (strcmp(afa.af_name, ACCF_NAME) != 0) 189 errx(-1, "not ok 10 - getsockopt() after setsockopt() after " 190 "listen() mismatch (got %s expected %s)", afa.af_name, 191 ACCF_NAME); 192 printf("ok 10 - getsockopt\n"); 193 194 /* 195 * Step 10: Remove accept filter. After removing the accept filter 196 * getsockopt() should fail with EINVAL. 197 */ 198 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0); 199 if (ret != 0) 200 errx(-1, "not ok 11 - setsockopt() after listen() " 201 "failed with %d (%s)", errno, strerror(errno)); 202 bzero(&afa, sizeof(afa)); 203 len = sizeof(afa); 204 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 205 if (ret == 0) 206 errx(-1, "not ok 11 - getsockopt() after removing " 207 "the accept filter returns valid accept filter %s", 208 afa.af_name); 209 if (errno != EINVAL) 210 errx(-1, "not ok 11 - getsockopt() after removing the accept" 211 "filter failed with %d (%s)", errno, strerror(errno)); 212 printf("ok 11 - setsockopt\n"); 213 214 close(lso); 215 return (0); 216 } 217