1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2022 Gleb Smirnoff <glebius@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/socket.h> 29 #include <netinet/in.h> 30 #include <errno.h> 31 #include <fcntl.h> 32 33 #include <atf-c.h> 34 35 static int 36 listensock(struct sockaddr_in *sin) 37 { 38 int l; 39 40 ATF_REQUIRE((l = socket(PF_INET, SOCK_STREAM, 0)) > 0); 41 ATF_REQUIRE(fcntl(l, F_SETFL, O_NONBLOCK) != -1); 42 ATF_REQUIRE(setsockopt(l, SOL_SOCKET, SO_REUSEADDR, &(socklen_t){1}, 43 sizeof(int)) == 0); 44 *sin = (struct sockaddr_in){ 45 .sin_len = sizeof(sin), 46 .sin_family = AF_INET, 47 .sin_addr.s_addr = htonl(INADDR_LOOPBACK), 48 }; 49 ATF_REQUIRE(bind(l, (struct sockaddr *)sin, sizeof(*sin)) == 0); 50 ATF_REQUIRE(getsockname(l, (struct sockaddr *)sin, 51 &(socklen_t){ sizeof(*sin) }) == 0); 52 ATF_REQUIRE(listen(l, -1) == 0); 53 54 return (l); 55 } 56 57 static int 58 clientsock(struct sockaddr_in *sin) 59 { 60 int s; 61 62 ATF_REQUIRE((s = socket(PF_INET, SOCK_STREAM, 0)) > 0); 63 ATF_REQUIRE(connect(s, (struct sockaddr *)sin, sizeof(*sin)) == 0); 64 65 return (s); 66 } 67 68 static void 69 accfon(int l, struct accept_filter_arg *af) 70 { 71 72 if (setsockopt(l, SOL_SOCKET, SO_ACCEPTFILTER, af, sizeof(*af)) != 0) { 73 if (errno == ENOENT) 74 atf_tc_skip("Accept filter %s not loaded in kernel", 75 af->af_name); 76 else 77 atf_tc_fail("setsockopt(SO_ACCEPTFILTER): %s", 78 strerror(errno)); 79 } 80 } 81 82 /* 83 * XXX: return from send(2) on a localhost connection doesn't guarantee that 84 * netisr has fully processed and delivered the data to the remote local 85 * socket. Sleep a fraction of second to "guarantee" that it did. 86 */ 87 static ssize_t 88 usend(int s, const void *msg, size_t len) 89 { 90 ssize_t rv; 91 92 rv = send(s, msg, len, 0); 93 usleep(100000); 94 return (rv); 95 } 96 97 ATF_TC_WITHOUT_HEAD(data); 98 ATF_TC_BODY(data, tc) 99 { 100 struct accept_filter_arg afa = { 101 .af_name = "dataready" 102 }; 103 struct sockaddr_in sin; 104 int l, s, a; 105 106 l = listensock(&sin); 107 accfon(l, &afa); 108 s = clientsock(&sin); 109 ATF_REQUIRE(accept(l, NULL, 0) == -1); 110 ATF_REQUIRE(errno == EAGAIN); 111 ATF_REQUIRE(usend(s, "foo", sizeof("foo")) == sizeof("foo")); 112 ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); 113 } 114 115 ATF_TC_WITHOUT_HEAD(http); 116 ATF_TC_BODY(http, tc) 117 { 118 struct accept_filter_arg afa = { 119 .af_name = "httpready" 120 }; 121 struct sockaddr_in sin; 122 int l, s, a; 123 124 l = listensock(&sin); 125 accfon(l, &afa); 126 s = clientsock(&sin); 127 128 /* 1) No data. */ 129 ATF_REQUIRE(accept(l, NULL, 0) == -1); 130 ATF_REQUIRE(errno == EAGAIN); 131 132 /* 2) Data, that doesn't look like HTTP. */ 133 ATF_REQUIRE(usend(s, "foo", sizeof("foo")) == sizeof("foo")); 134 ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); 135 136 close(s); 137 close(a); 138 139 #define CHUNK1 "GET / " 140 #define CHUNK2 "HTTP/1.0\r\n\n" 141 #define LEN(c) (sizeof(c) - 1) 142 143 /* 3) Partial HTTP. */ 144 s = clientsock(&sin); 145 ATF_REQUIRE(usend(s, CHUNK1, LEN(CHUNK1)) == LEN(CHUNK1)); 146 ATF_REQUIRE(accept(l, NULL, 0) == -1); 147 ATF_REQUIRE(errno == EAGAIN); 148 149 /* 4) Complete HTTP. */ 150 ATF_REQUIRE(usend(s, CHUNK2, LEN(CHUNK2)) == LEN(CHUNK2)); 151 ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); 152 } 153 154 ATF_TP_ADD_TCS(tp) 155 { 156 ATF_TP_ADD_TC(tp, data); 157 ATF_TP_ADD_TC(tp, http); 158 159 return (atf_no_error()); 160 } 161