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103 lines
3.3 KiB
103 lines
3.3 KiB
4 months ago
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#include "tests.h"
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#include <stdio.h>
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#include <sys/socket.h>
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#include <linux/if_packet.h>
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static const char *errstr;
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static long
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packet_mreq_membership(int optname, void *optval, socklen_t len)
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{
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long rc = setsockopt(-1, SOL_PACKET, optname, optval, len);
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errstr = sprintrc(rc);
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return rc;
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}
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static void
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test_packet_mreq(const int optname, const char *const optname_str)
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{
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TAIL_ALLOC_OBJECT_CONST_PTR(struct packet_mreq, pmreq);
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socklen_t len = sizeof(struct packet_mreq);
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/* setsockopt with optname unknown */
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packet_mreq_membership(-1, NULL, 0);
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printf("setsockopt(-1, SOL_PACKET, %#x /* PACKET_??? */, NULL, 0) = %s\n",
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-1, errstr);
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/* setsockopt with mr_type unknown */
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pmreq->mr_ifindex = 0;
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pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address);
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packet_mreq_membership(optname, pmreq, len);
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printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
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" mr_type=%#x /* PACKET_MR_??? */, mr_alen=%d, mr_address=",
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optname_str, pmreq->mr_ifindex, pmreq->mr_type, pmreq->mr_alen);
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for (unsigned int i = 0; i < ARRAY_SIZE(pmreq->mr_address); i++) {
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printf("%02x", pmreq->mr_address[i]);
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}
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printf("}, %d) = %s\n", len, errstr);
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/* setsockopt with mr_type unknown and mr_alen > sizeof(mr_address) */
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pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address) + 1;
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packet_mreq_membership(optname, pmreq, len);
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printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
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" mr_type=%#x /* PACKET_MR_??? */, mr_alen=%d, mr_address=",
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optname_str, pmreq->mr_ifindex, pmreq->mr_type, pmreq->mr_alen);
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for (unsigned int i = 0; i < ARRAY_SIZE(pmreq->mr_address); i++) {
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printf("%02x", pmreq->mr_address[i]);
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}
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printf("}, %d) = %s\n", len, errstr);
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/* setsockopt with mr_type unknown and mr_alen < sizeof(mr_address) */
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pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address) - 1;
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packet_mreq_membership(optname, pmreq, len);
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printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
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" mr_type=%#x /* PACKET_MR_??? */, mr_alen=%d, mr_address=",
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optname_str, pmreq->mr_ifindex, pmreq->mr_type, pmreq->mr_alen);
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for (unsigned int i = 0; i < pmreq->mr_alen; i++) {
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printf("%02x", pmreq->mr_address[i]);
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}
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printf("}, %d) = %s\n", len, errstr);
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/* setsockopt with valid mr_type */
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pmreq->mr_alen = ARRAY_SIZE(pmreq->mr_address);
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static const struct {
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unsigned short type;
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const char *const type_str;
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} a[] = {
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{ ARG_STR(PACKET_MR_MULTICAST) },
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{ ARG_STR(PACKET_MR_PROMISC) },
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{ ARG_STR(PACKET_MR_ALLMULTI) },
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#ifdef PACKET_MR_UNICAST
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{ ARG_STR(PACKET_MR_UNICAST) },
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#endif
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};
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for (unsigned int i = 0; i < ARRAY_SIZE(a); i++) {
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pmreq->mr_type = a[i].type;
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packet_mreq_membership(optname, pmreq, len);
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printf("setsockopt(-1, SOL_PACKET, %s, {mr_ifindex=%d,"
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" mr_type=%s, mr_alen=%d, mr_address=",
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optname_str, pmreq->mr_ifindex, a[i].type_str, pmreq->mr_alen);
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for (unsigned int i = 0; i < pmreq->mr_alen; i++) {
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printf("%02x", pmreq->mr_address[i]);
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}
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printf("}, %d) = %s\n", len, errstr);
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}
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/* setsockopt with optlen larger than usual */
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len = len + 1;
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packet_mreq_membership(optname, pmreq, len);
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printf("setsockopt(-1, SOL_PACKET, %s, %p,"
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" %d) = %s\n", optname_str, pmreq, len, errstr);
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}
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int
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main(void)
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{
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test_packet_mreq(ARG_STR(PACKET_ADD_MEMBERSHIP));
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test_packet_mreq(ARG_STR(PACKET_DROP_MEMBERSHIP));
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puts("+++ exited with 0 +++");
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return 0;
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}
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