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162 lines
5.2 KiB
162 lines
5.2 KiB
/*
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* Check decoding of MCAST_JOIN_GROUP/MCAST_LEAVE_GROUP.
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*
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* Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2017-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <net/if.h>
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#include <netinet/in.h>
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#if defined MCAST_JOIN_GROUP && defined MCAST_LEAVE_GROUP
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# include <limits.h>
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# include <stdio.h>
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# include <unistd.h>
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# include <sys/socket.h>
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# include <arpa/inet.h>
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#define multi4addr "224.0.0.3"
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#define multi6addr "ff01::c"
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static const char *errstr;
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static int
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set_opt(const int fd, const int level, const int opt,
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const void *const val, const socklen_t len)
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{
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int rc = setsockopt(fd, level, opt, val, len);
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errstr = sprintrc(rc);
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return rc;
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}
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int
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main(void)
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{
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TAIL_ALLOC_OBJECT_CONST_PTR(struct group_req, greq4);
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TAIL_ALLOC_OBJECT_CONST_PTR(struct group_req, greq6);
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unsigned int i;
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greq6->gr_interface = greq4->gr_interface = ifindex_lo();
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if (!greq4->gr_interface)
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perror_msg_and_skip("lo");
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greq4->gr_group.ss_family = AF_INET;
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inet_pton(AF_INET, multi4addr, &greq4->gr_group.ss_family + 2);
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greq6->gr_group.ss_family = AF_INET6;
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inet_pton(AF_INET6, multi6addr, &greq6->gr_group.ss_family + 4);
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(void) close(0);
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if (socket(AF_INET, SOCK_DGRAM, 0))
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perror_msg_and_skip("socket");
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struct {
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const int level;
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const char *const str_level;
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const int name;
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const char *const str_name;
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const struct group_req *const val;
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const char *const addr;
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} opts[] = {
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{
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ARG_STR(SOL_IP), ARG_STR(MCAST_JOIN_GROUP), greq4,
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"gr_group={sa_family=AF_INET, sin_port=htons(65535)"
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", sin_addr=inet_addr(\"" multi4addr "\")}"
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},
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{
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ARG_STR(SOL_IP), ARG_STR(MCAST_LEAVE_GROUP), greq4,
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"gr_group={sa_family=AF_INET, sin_port=htons(65535)"
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", sin_addr=inet_addr(\"" multi4addr "\")}"
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},
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{
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ARG_STR(SOL_IPV6), ARG_STR(MCAST_JOIN_GROUP), greq6,
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"gr_group={sa_family=AF_INET6, sin6_port=htons(65535)"
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", inet_pton(AF_INET6, \"" multi6addr "\", &sin6_addr)"
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", sin6_flowinfo=htonl(4294967295)"
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", sin6_scope_id=4294967295}"
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},
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{
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ARG_STR(SOL_IPV6), ARG_STR(MCAST_LEAVE_GROUP), greq6,
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"gr_group={sa_family=AF_INET6, sin6_port=htons(65535)"
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", inet_pton(AF_INET6, \"" multi6addr "\", &sin6_addr)"
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", sin6_flowinfo=htonl(4294967295)"
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", sin6_scope_id=4294967295}"
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}
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};
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for (i = 0; i < ARRAY_SIZE(opts); ++i) {
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/* optlen < 0, EINVAL */
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set_opt(0, opts[i].level, opts[i].name, opts[i].val, -1U);
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printf("setsockopt(0, %s, %s, %p, -1) = %s\n",
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opts[i].str_level, opts[i].str_name,
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opts[i].val, errstr);
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/* optlen < sizeof(struct group_req), EINVAL */
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set_opt(0, opts[i].level, opts[i].name, opts[i].val,
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sizeof(*opts[i].val) - 1);
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printf("setsockopt(0, %s, %s, %p, %u) = %s\n",
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opts[i].str_level, opts[i].str_name,
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opts[i].val, (unsigned int) sizeof(*opts[i].val) - 1,
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errstr);
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/* optval EFAULT */
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set_opt(0, opts[i].level, opts[i].name,
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(const char *) opts[i].val + 1, sizeof(*opts[i].val));
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printf("setsockopt(0, %s, %s, %p, %u) = %s\n",
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opts[i].str_level, opts[i].str_name,
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(const char *) opts[i].val + 1,
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(unsigned int) sizeof(*opts[i].val), errstr);
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/* classic */
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set_opt(0, opts[i].level, opts[i].name,
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opts[i].val, sizeof(*opts[i].val));
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printf("setsockopt(0, %s, %s"
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", {gr_interface=%s, %s}, %u) = %s\n",
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opts[i].str_level, opts[i].str_name,
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IFINDEX_LO_STR, opts[i].addr,
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(unsigned int) sizeof(*opts[i].val), errstr);
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/* optlen > sizeof(struct group_req), shortened */
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set_opt(0, opts[i].level, opts[i].name, opts[i].val, INT_MAX);
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printf("setsockopt(0, %s, %s"
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", {gr_interface=%s, %s}, %u) = %s\n",
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opts[i].str_level, opts[i].str_name,
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IFINDEX_LO_STR, opts[i].addr,
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INT_MAX, errstr);
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}
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("MCAST_JOIN_GROUP && MCAST_LEAVE_GROUP")
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#endif
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