/* * Check decoding of MCAST_JOIN_GROUP/MCAST_LEAVE_GROUP. * * Copyright (c) 2015-2017 Dmitry V. Levin * Copyright (c) 2017-2018 The strace developers. * All rights reserved. * * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "tests.h" #include #include #if defined MCAST_JOIN_GROUP && defined MCAST_LEAVE_GROUP # include # include # include # include # include #define multi4addr "224.0.0.3" #define multi6addr "ff01::c" static const char *errstr; static int set_opt(const int fd, const int level, const int opt, const void *const val, const socklen_t len) { int rc = setsockopt(fd, level, opt, val, len); errstr = sprintrc(rc); return rc; } int main(void) { TAIL_ALLOC_OBJECT_CONST_PTR(struct group_req, greq4); TAIL_ALLOC_OBJECT_CONST_PTR(struct group_req, greq6); unsigned int i; greq6->gr_interface = greq4->gr_interface = ifindex_lo(); if (!greq4->gr_interface) perror_msg_and_skip("lo"); greq4->gr_group.ss_family = AF_INET; inet_pton(AF_INET, multi4addr, &greq4->gr_group.ss_family + 2); greq6->gr_group.ss_family = AF_INET6; inet_pton(AF_INET6, multi6addr, &greq6->gr_group.ss_family + 4); (void) close(0); if (socket(AF_INET, SOCK_DGRAM, 0)) perror_msg_and_skip("socket"); struct { const int level; const char *const str_level; const int name; const char *const str_name; const struct group_req *const val; const char *const addr; } opts[] = { { ARG_STR(SOL_IP), ARG_STR(MCAST_JOIN_GROUP), greq4, "gr_group={sa_family=AF_INET, sin_port=htons(65535)" ", sin_addr=inet_addr(\"" multi4addr "\")}" }, { ARG_STR(SOL_IP), ARG_STR(MCAST_LEAVE_GROUP), greq4, "gr_group={sa_family=AF_INET, sin_port=htons(65535)" ", sin_addr=inet_addr(\"" multi4addr "\")}" }, { ARG_STR(SOL_IPV6), ARG_STR(MCAST_JOIN_GROUP), greq6, "gr_group={sa_family=AF_INET6, sin6_port=htons(65535)" ", inet_pton(AF_INET6, \"" multi6addr "\", &sin6_addr)" ", sin6_flowinfo=htonl(4294967295)" ", sin6_scope_id=4294967295}" }, { ARG_STR(SOL_IPV6), ARG_STR(MCAST_LEAVE_GROUP), greq6, "gr_group={sa_family=AF_INET6, sin6_port=htons(65535)" ", inet_pton(AF_INET6, \"" multi6addr "\", &sin6_addr)" ", sin6_flowinfo=htonl(4294967295)" ", sin6_scope_id=4294967295}" } }; for (i = 0; i < ARRAY_SIZE(opts); ++i) { /* optlen < 0, EINVAL */ set_opt(0, opts[i].level, opts[i].name, opts[i].val, -1U); printf("setsockopt(0, %s, %s, %p, -1) = %s\n", opts[i].str_level, opts[i].str_name, opts[i].val, errstr); /* optlen < sizeof(struct group_req), EINVAL */ set_opt(0, opts[i].level, opts[i].name, opts[i].val, sizeof(*opts[i].val) - 1); printf("setsockopt(0, %s, %s, %p, %u) = %s\n", opts[i].str_level, opts[i].str_name, opts[i].val, (unsigned int) sizeof(*opts[i].val) - 1, errstr); /* optval EFAULT */ set_opt(0, opts[i].level, opts[i].name, (const char *) opts[i].val + 1, sizeof(*opts[i].val)); printf("setsockopt(0, %s, %s, %p, %u) = %s\n", opts[i].str_level, opts[i].str_name, (const char *) opts[i].val + 1, (unsigned int) sizeof(*opts[i].val), errstr); /* classic */ set_opt(0, opts[i].level, opts[i].name, opts[i].val, sizeof(*opts[i].val)); printf("setsockopt(0, %s, %s" ", {gr_interface=%s, %s}, %u) = %s\n", opts[i].str_level, opts[i].str_name, IFINDEX_LO_STR, opts[i].addr, (unsigned int) sizeof(*opts[i].val), errstr); /* optlen > sizeof(struct group_req), shortened */ set_opt(0, opts[i].level, opts[i].name, opts[i].val, INT_MAX); printf("setsockopt(0, %s, %s" ", {gr_interface=%s, %s}, %u) = %s\n", opts[i].str_level, opts[i].str_name, IFINDEX_LO_STR, opts[i].addr, INT_MAX, errstr); } puts("+++ exited with 0 +++"); return 0; } #else SKIP_MAIN_UNDEFINED("MCAST_JOIN_GROUP && MCAST_LEAVE_GROUP") #endif