diff options
Diffstat (limited to 'tests/sys/kern/socket_accf.c')
| -rw-r--r-- | tests/sys/kern/socket_accf.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/tests/sys/kern/socket_accf.c b/tests/sys/kern/socket_accf.c new file mode 100644 index 000000000000..939ca9495689 --- /dev/null +++ b/tests/sys/kern/socket_accf.c @@ -0,0 +1,261 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2022-2024 Gleb Smirnoff <glebius@FreeBSD.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/socket.h> +#include <netinet/in.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> + +#include <atf-c.h> + +static int +listensock(struct sockaddr_in *sin) +{ + int l; + + ATF_REQUIRE((l = socket(PF_INET, SOCK_STREAM, 0)) > 0); + ATF_REQUIRE(fcntl(l, F_SETFL, O_NONBLOCK) != -1); + ATF_REQUIRE(setsockopt(l, SOL_SOCKET, SO_REUSEADDR, &(socklen_t){1}, + sizeof(int)) == 0); + *sin = (struct sockaddr_in){ + .sin_len = sizeof(sin), + .sin_family = AF_INET, + .sin_addr.s_addr = htonl(INADDR_LOOPBACK), + }; + ATF_REQUIRE(bind(l, (struct sockaddr *)sin, sizeof(*sin)) == 0); + ATF_REQUIRE(getsockname(l, (struct sockaddr *)sin, + &(socklen_t){ sizeof(*sin) }) == 0); + ATF_REQUIRE(listen(l, -1) == 0); + + return (l); +} + +static int +clientsock(struct sockaddr_in *sin) +{ + int s; + + ATF_REQUIRE((s = socket(PF_INET, SOCK_STREAM, 0)) > 0); + ATF_REQUIRE(connect(s, (struct sockaddr *)sin, sizeof(*sin)) == 0); + + return (s); +} + +static void +accfon(int l, struct accept_filter_arg *af) +{ + if (setsockopt(l, SOL_SOCKET, SO_ACCEPTFILTER, af, sizeof(*af)) != 0) { + atf_tc_fail("setsockopt(SO_ACCEPTFILTER): %s", strerror(errno)); + } +} + +/* + * XXX: return from send(2) on a localhost connection doesn't guarantee that + * netisr has fully processed and delivered the data to the remote local + * socket. Sleep a fraction of second to "guarantee" that it did. + */ +static ssize_t +usend(int s, const void *msg, size_t len) +{ + ssize_t rv; + + rv = send(s, msg, len, 0); + usleep(100000); + return (rv); +} + +ATF_TC(data); +ATF_TC_HEAD(data, tc) +{ + atf_tc_set_md_var(tc, "require.kmods", "accf_data"); +} +ATF_TC_BODY(data, tc) +{ + struct accept_filter_arg afa = { + .af_name = "dataready" + }; + struct sockaddr_in sin; + int l, s, a; + + l = listensock(&sin); + accfon(l, &afa); + s = clientsock(&sin); + ATF_REQUIRE(accept(l, NULL, 0) == -1); + ATF_REQUIRE(errno == EAGAIN); + ATF_REQUIRE(usend(s, "foo", sizeof("foo")) == sizeof("foo")); + ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); +} + +ATF_TC(http); +ATF_TC_HEAD(http, tc) +{ + atf_tc_set_md_var(tc, "require.kmods", "accf_http"); +} +ATF_TC_BODY(http, tc) +{ + struct accept_filter_arg afa = { + .af_name = "httpready" + }; + struct sockaddr_in sin; + int l, s, a; + + l = listensock(&sin); + accfon(l, &afa); + s = clientsock(&sin); + + /* 1) No data. */ + ATF_REQUIRE(accept(l, NULL, 0) == -1); + ATF_REQUIRE(errno == EAGAIN); + + /* 2) Data, that doesn't look like HTTP. */ + ATF_REQUIRE(usend(s, "foo", sizeof("foo")) == sizeof("foo")); + ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); + + close(s); + close(a); + +#define CHUNK1 "GET / " +#define CHUNK2 "HTTP/1.0\r\n\n" +#define LEN(c) (sizeof(c) - 1) + + /* 3) Partial HTTP. */ + s = clientsock(&sin); + ATF_REQUIRE(usend(s, CHUNK1, LEN(CHUNK1)) == LEN(CHUNK1)); + ATF_REQUIRE(accept(l, NULL, 0) == -1); + ATF_REQUIRE(errno == EAGAIN); + + /* 4) Complete HTTP. */ + ATF_REQUIRE(usend(s, CHUNK2, LEN(CHUNK2)) == LEN(CHUNK2)); + ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); +} + +ATF_TC(tls); +ATF_TC_HEAD(tls, tc) +{ + atf_tc_set_md_var(tc, "require.kmods", "accf_tls"); +} +ATF_TC_BODY(tls, tc) +{ + struct accept_filter_arg afa = { + .af_name = "tlsready" + }; + struct sockaddr_in sin; + int l, s, a; + + l = listensock(&sin); + accfon(l, &afa); + s = clientsock(&sin); + + /* 1) No data. */ + ATF_REQUIRE(accept(l, NULL, 0) == -1); + ATF_REQUIRE(errno == EAGAIN); + + /* 2) Less than 5 bytes. */ + ATF_REQUIRE(usend(s, "foo", sizeof("foo")) == sizeof("foo")); + ATF_REQUIRE(errno == EAGAIN); + + /* 3) Something that doesn't look like TLS handshake. */ + ATF_REQUIRE(usend(s, "bar", sizeof("bar")) == sizeof("bar")); + ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); + + close(s); + close(a); + + /* 4) Partial TLS record. */ + s = clientsock(&sin); + struct { + uint8_t type; + uint16_t version; + uint16_t length; + } __attribute__((__packed__)) header = { + .type = 0x16, + .length = htons((uint16_t)(arc4random() % 16384)), + }; + _Static_assert(sizeof(header) == 5, ""); + ATF_REQUIRE(usend(s, &header, sizeof(header)) == sizeof(header)); + ssize_t sent = 0; + do { + size_t len; + char *buf; + + ATF_REQUIRE(accept(l, NULL, 0) == -1); + ATF_REQUIRE(errno == EAGAIN); + + len = arc4random() % 1024; + buf = alloca(len); + ATF_REQUIRE(usend(s, buf, len) == (ssize_t)len); + sent += len; + } while (sent < ntohs(header.length)); + /* TLS header with bytes >= declared length. */ + ATF_REQUIRE((a = accept(l, NULL, 0)) > 0); +} + +/* Check changing to a different filter. */ +ATF_TC(change); +ATF_TC_HEAD(change, tc) +{ + atf_tc_set_md_var(tc, "require.kmods", "accf_data accf_http"); +} +ATF_TC_BODY(change, tc) +{ + struct accept_filter_arg dfa = { + .af_name = "dataready" + }; + struct accept_filter_arg hfa = { + .af_name = "httpready" + }; + struct sockaddr_in sin; + int n, l; + + l = listensock(&sin); + accfon(l, &dfa); + + /* Refuse to change filter without explicit removal of the old one. */ + ATF_REQUIRE(setsockopt(l, SOL_SOCKET, SO_ACCEPTFILTER, &hfa, + sizeof(hfa)) != 0 && errno == EBUSY); + + /* But allow after clearing. */ + ATF_REQUIRE(setsockopt(l, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0) == 0); + ATF_REQUIRE(setsockopt(l, SOL_SOCKET, SO_ACCEPTFILTER, &hfa, + sizeof(hfa)) == 0); + + /* Must be listening socket. */ + ATF_REQUIRE((n = socket(PF_INET, SOCK_STREAM, 0)) > 0); + ATF_REQUIRE(setsockopt(n, SOL_SOCKET, SO_ACCEPTFILTER, &dfa, + sizeof(dfa)) != 0 && errno == EINVAL); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, data); + ATF_TP_ADD_TC(tp, http); + ATF_TP_ADD_TC(tp, tls); + ATF_TP_ADD_TC(tp, change); + + return (atf_no_error()); +} |