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 errx(-1, "socket: %s", strerror(errno)); 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 errx(-1, "FAIL: getsockopt() after socket() succeeded"); 82 if (errno != EINVAL) 83 errx(-1, "FAIL: getsockopt() after socket() failed with " 84 "%d (%s)", errno, strerror(errno)); 85 86 /* 87 * Step 2. Bind(). Ideally this will succeed. 88 */ 89 bzero(&sin, sizeof(sin)); 90 sin.sin_len = sizeof(sin); 91 sin.sin_family = AF_INET; 92 sin.sin_port = htons(8080); 93 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 94 if (bind(lso, (struct sockaddr *)&sin, sizeof(sin)) < 0) 95 errx(-1, "bind: %s", strerror(errno)); 96 97 /* 98 * Step 3: After bind(). getsockopt() should return EINVAL, since no 99 * accept filter should be attached. 100 */ 101 len = sizeof(afa); 102 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 103 if (ret != -1) 104 errx(-1, "FAIL: getsockopt() after bind() succeeded"); 105 if (errno != EINVAL) 106 errx(-1, "FAIL: getsockopt() after bind() failed with %d (%s)", 107 errno, strerror(errno)); 108 109 /* 110 * Step 4: Setsockopt() before listen(). Should fail, since it's not 111 * yet a listen() socket. 112 */ 113 bzero(&afa, sizeof(afa)); 114 strcpy(afa.af_name, ACCF_NAME); 115 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 116 if (ret == 0) 117 errx(-1, "FAIL: setsockopt() before listen() succeeded"); 118 119 /* 120 * Step 5: Getsockopt() after pre-listen() setsockopt(). Should 121 * fail with EINVAL, since setsockopt() should have failed. 122 */ 123 len = sizeof(afa); 124 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 125 if (ret == 0) 126 errx(-1, "FAIL: getsockopt() after pre-listen() setsockopt() " 127 "succeeded"); 128 if (errno != EINVAL) 129 errx(-1, "FAIL: pre-listen() getsockopt() failed with %d (%s)", 130 errno, strerror(errno)); 131 132 /* 133 * Step 6: listen(). 134 */ 135 if (listen(lso, -1) < 0) 136 errx(-1, "listen: %s", strerror(errno)); 137 138 /* 139 * Step 7: After listen(). This call to setsockopt() should succeed. 140 */ 141 bzero(&afa, sizeof(afa)); 142 strcpy(afa.af_name, ACCF_NAME); 143 ret = setsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa)); 144 if (ret != 0) 145 errx(-1, "FAIL: setsockopt() after listen() failed with %d " 146 "(%s)", errno, strerror(errno)); 147 if (len != sizeof(afa)) 148 errx(-1, "FAIL: setsockopt() after listen() returned wrong " 149 "size (%d vs expected %d)", len, sizeof(afa)); 150 151 /* 152 * Step 8: After setsockopt(). Should succeed and identify 153 * ACCF_NAME. 154 */ 155 bzero(&afa, sizeof(afa)); 156 len = sizeof(afa); 157 ret = getsockopt(lso, SOL_SOCKET, SO_ACCEPTFILTER, &afa, &len); 158 if (ret != 0) 159 errx(-1, "FAIL: getsockopt() after listen() setsockopt() " 160 "failed with %d (%s)", errno, strerror(errno)); 161 if (len != sizeof(afa)) 162 errx(-1, "FAIL: getsockopt() after setsockopet() after " 163 "listen() returned wrong size (got %d expected %d)", len, 164 sizeof(afa)); 165 if (strcmp(afa.af_name, ACCF_NAME) != 0) 166 errx(-1, "FAIL: getsockopt() after setsockopt() after " 167 "listen() mismatch (got %s expected %s)", afa.af_name, 168 ACCF_NAME); 169 170 printf("PASS\n"); 171 close(lso); 172 return (0); 173 } 174