--- /dev/null
+/*
+ * Check decoding of MCAST_JOIN_GROUP/MCAST_LEAVE_GROUP.
+ *
+ * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
+ * 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 <net/if.h>
+#include <netinet/in.h>
+
+#if defined HAVE_IF_INDEXTONAME \
+ && defined MCAST_JOIN_GROUP && defined MCAST_LEAVE_GROUP
+
+# include <stdio.h>
+# include <unistd.h>
+# include <sys/param.h>
+# include <sys/socket.h>
+# include <arpa/inet.h>
+
+#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 = if_nametoindex("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=if_nametoindex(\"lo\")"
+ ", %s}, %u) = %s\n",
+ opts[i].str_level, opts[i].str_name, 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=if_nametoindex(\"lo\")"
+ ", %s}, %u) = %s\n",
+ opts[i].str_level, opts[i].str_name,
+ opts[i].addr, INT_MAX, errstr);
+ }
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("HAVE_IF_INDEXTONAME && MCAST_JOIN_GROUP && MCAST_LEAVE_GROUP")
+
+#endif
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