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 */ 58 int 59 main(int argc, char *argv[]) 60 { 61 struct accept_filter_arg afa; 62 struct sockaddr_in sin; 63 socklen_t len; 64 int lso, ret; 65 66 /* 67 * Step 0. Open socket(). 68 */ 69 lso = socket(PF_INET, SOCK_STREAM, 0); 70 if (lso == -1) 71 err(1, "socket"); 72 73 /* 74 * Step 1. After socket(). Should return EINVAL, since no accept 75 * filter should be attached. 76 */ 77 bzero(&afa, sizeof(afa)); 78 len = sizeof(afa); 79 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 80 if (ret != -1) { 81 fprintf(stderr, "FAIL: getsockopt() after socket() " 82 "succeeded\n"); 83 exit(-1); 84 } 85 if (errno != EINVAL) { 86 fprintf(stderr, "FAIL: getsockopt() after socket() " 87 "failed with %d (%s)\n", errno, strerror(errno)); 88 exit(-1); 89 } 90 91 /* 92 * Step 2. Bind(). Ideally this will succeed. 93 */ 94 bzero(&sin, sizeof(sin)); 95 sin.sin_len = sizeof(sin); 96 sin.sin_family = AF_INET; 97 sin.sin_port = htons(8080); 98 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 99 if (bind(lso, (struct sockaddr *)&sin, sizeof(sin)) < 0) 100 err(1, "bind"); 101 102 /* 103 * Step 3: After bind(). getsockopt() should return EINVAL, since no 104 * accept filter should be attached. 105 */ 106 len = sizeof(afa); 107 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 108 if (ret != -1) { 109 fprintf(stderr, "FAIL: getsockopt() after bind() succeeded\n"); 110 exit(-1); 111 } 112 if (errno != EINVAL) { 113 fprintf(stderr, "FAIL: getsockopt() after bind() failed " 114 "with %d (%s)\n", errno, strerror(errno)); 115 exit(-1); 116 } 117 118 /* 119 * Step 4: Setsockopt() before listen(). Should fail, since it's not 120 * yet a listen() socket. 121 */ 122 bzero(&afa, sizeof(afa)); 123 strcpy(afa.af_name, ACCF_NAME); 124 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 125 if (ret == 0) { 126 fprintf(stderr, "FAIL: setsockopt() before listen() " 127 "succeeded\n"); 128 exit(-1); 129 } 130 131 /* 132 * Step 5: Getsockopt() after pre-listen() setsockopt(). Should 133 * fail with EINVAL, since setsockopt() should have failed. 134 */ 135 len = sizeof(afa); 136 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 137 if (ret == 0) { 138 fprintf(stderr, "FAIL: getsockopt() after pre-listen() " 139 "setsockopt() succeeded\n"); 140 exit(-1); 141 } 142 if (errno != EINVAL) { 143 fprintf(stderr, "FAIL: pre-listen() getsockopt() failed " 144 "with %d (%s)\n", errno, strerror(errno)); 145 exit(-1); 146 } 147 148 /* 149 * Step 6: listen(). 150 */ 151 if (listen(lso, -1) < 0) 152 err(1, "listen"); 153 154 /* 155 * Step 7: After listen(). This call to setsockopt() should succeed. 156 */ 157 bzero(&afa, sizeof(afa)); 158 strcpy(afa.af_name, ACCF_NAME); 159 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 160 if (ret != 0) { 161 fprintf(stderr, "FAIL: setsockopt() after listen() failed " 162 "with %d (%s)\n", errno, strerror(errno)); 163 exit(-1); 164 } 165 if (len != sizeof(afa)) { 166 fprintf(stderr, "FAIL: setsockopt() after listen() returned " 167 "wrong size (%d vs expected %d)\n", len, sizeof(afa)); 168 exit(-1); 169 } 170 171 /* 172 * Step 8: After setsockopt(). Should succeed and identify 173 * ACCF_NAME. 174 */ 175 bzero(&afa, sizeof(afa)); 176 len = sizeof(afa); 177 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 178 if (ret != 0) { 179 fprintf(stderr, "FAIL: getsockopt() after listen() " 180 "setsockopt() failed with %d (%s)\n", errno, 181 strerror(errno)); 182 exit(-1); 183 } 184 if (len != sizeof(afa)) { 185 fprintf(stderr, "FAIL: getsockopt() after setsockopet() " 186 " after listen() returned wrong size (got %d expected " 187 "%d)\n", len, sizeof(afa)); 188 exit(-1); 189 } 190 if (strcmp(afa.af_name, ACCF_NAME) != 0) { 191 fprintf(stderr, "FAIL: getsockopt() after setsockopt() " 192 "after listen() mismatch (got %s expected %s)\n", 193 afa.af_name, ACCF_NAME); 194 exit(-1); 195 } 196 197 printf("PASS\n"); 198 close(lso); 199 return (0); 200 } 201