2 * Program to test new [sg]etsockopts and ioctls for manipulating IP and
3 * Ethernet multicast address filters.
5 * Written by Steve Deering, Stanford University, February 1989.
9 static const char rcsid[] =
16 #include <sys/types.h>
17 #include <sys/socket.h>
20 #include <net/if_dl.h>
21 #include <sys/ioctl.h>
22 #include <netinet/in.h>
35 unsigned i1, i2, i3, i4, g1, g2, g3, g4;
36 unsigned e1, e2, e3, e4, e5, e6;
38 if( (so = socket( AF_INET, SOCK_DGRAM, 0 )) == -1)
39 err( 1, "can't open socket" );
41 printf( "multicast membership test program; " );
42 printf( "enter ? for list of commands\n" );
44 while( fgets( line, 79, stdin ) != NULL )
47 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
52 printf( "%s%s%s%s%s%s%s",
53 " j g.g.g.g i.i.i.i - join IP multicast group \n",
54 " l g.g.g.g i.i.i.i - leave IP multicast group \n",
55 " a ifname e.e.e.e.e.e - add ether multicast address \n",
56 " d ifname e.e.e.e.e.e - del ether multicast address \n",
57 " m ifname 1/0 - set/clear ether allmulti flag \n",
58 " p ifname 1/0 - set/clear ether promisc flag \n",
66 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
67 if( (n = sscanf( lineptr, "%u.%u.%u.%u %u.%u.%u.%u",
68 &g1, &g2, &g3, &g4, &i1, &i2, &i3, &i4 )) != 8 )
70 printf( "bad args\n" );
73 imr.imr_multiaddr.s_addr = (g1<<24) | (g2<<16) | (g3<<8) | g4;
74 imr.imr_multiaddr.s_addr = htonl(imr.imr_multiaddr.s_addr);
75 imr.imr_interface.s_addr = (i1<<24) | (i2<<16) | (i3<<8) | i4;
76 imr.imr_interface.s_addr = htonl(imr.imr_interface.s_addr);
77 if( setsockopt( so, IPPROTO_IP, IP_ADD_MEMBERSHIP,
78 &imr, sizeof(struct ip_mreq) ) == -1 )
79 warn( "can't join group" );
80 else printf( "group joined\n" );
87 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
88 if( (n = sscanf( lineptr, "%u.%u.%u.%u %u.%u.%u.%u",
89 &g1, &g2, &g3, &g4, &i1, &i2, &i3, &i4 )) != 8 )
91 printf( "bad args\n" );
94 imr.imr_multiaddr.s_addr = (g1<<24) | (g2<<16) | (g3<<8) | g4;
95 imr.imr_multiaddr.s_addr = htonl(imr.imr_multiaddr.s_addr);
96 imr.imr_interface.s_addr = (i1<<24) | (i2<<16) | (i3<<8) | i4;
97 imr.imr_interface.s_addr = htonl(imr.imr_interface.s_addr);
98 if( setsockopt( so, IPPROTO_IP, IP_DROP_MEMBERSHIP,
99 &imr, sizeof(struct ip_mreq) ) == -1 )
100 warn( "can't leave group" );
101 else printf( "group left\n" );
107 struct sockaddr_dl *dlp;
110 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
111 if( (n = sscanf( lineptr, "%s %x.%x.%x.%x.%x.%x",
112 ifr.ifr_name, &e1, &e2, &e3, &e4, &e5, &e6 )) != 7 )
114 printf( "bad args\n" );
117 dlp = (struct sockaddr_dl *)&ifr.ifr_addr;
118 dlp->sdl_len = sizeof(struct sockaddr_dl);
119 dlp->sdl_family = AF_LINK;
131 if( ioctl( so, SIOCADDMULTI, &ifr ) == -1 )
132 warn( "can't add ether address" );
133 else printf( "ether address added\n" );
139 struct sockaddr_dl *dlp;
142 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
143 if( (n = sscanf( lineptr, "%s %x.%x.%x.%x.%x.%x",
144 ifr.ifr_name, &e1, &e2, &e3, &e4, &e5, &e6 )) != 7 )
146 printf( "bad args\n" );
149 dlp = (struct sockaddr_dl *)&ifr.ifr_addr;
150 dlp->sdl_len = sizeof(struct sockaddr_dl);
151 dlp->sdl_family = AF_LINK;
163 if( ioctl( so, SIOCDELMULTI, &ifr ) == -1 )
164 warn( "can't delete ether address" );
165 else printf( "ether address deleted\n" );
172 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
173 if( (n = sscanf( lineptr, "%s %u", ifr.ifr_name, &f )) != 2 )
175 printf( "bad args\n" );
178 if( ioctl( so, SIOCGIFFLAGS, &ifr ) == -1 )
180 warn( "can't get interface flags" );
183 printf( "interface flags %x, ", ifr.ifr_flags );
185 if( f ) ifr.ifr_flags |= IFF_ALLMULTI;
186 else ifr.ifr_flags &= ~IFF_ALLMULTI;
187 if( ioctl( so, SIOCSIFFLAGS, &ifr ) == -1 )
189 else printf( "changed to %x\n", ifr.ifr_flags );
196 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
197 if( (n = sscanf( lineptr, "%s %u", ifr.ifr_name, &f )) != 2 )
199 printf( "bad args\n" );
202 if( ioctl( so, SIOCGIFFLAGS, &ifr ) == -1 )
204 warn( "can't get interface flags" );
207 printf( "interface flags %x, ", ifr.ifr_flags );
209 if( f ) ifr.ifr_flags |= IFF_PROMISC;
210 else ifr.ifr_flags &= ~IFF_PROMISC;
211 if( ioctl( so, SIOCSIFFLAGS, &ifr ) == -1 )
213 else printf( "changed to %x\n", ifr.ifr_flags );
224 printf( "bad command\n" );