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.
7 * $FreeBSD: src/usr.sbin/mtest/mtest.c,v 1.4.6.1 2001/07/19 05:09:25 kris Exp $
8 * $DragonFly: src/usr.sbin/mtest/mtest.c,v 1.2 2003/06/17 04:29:57 dillon Exp $
14 #include <sys/types.h>
15 #include <sys/socket.h>
18 #include <net/if_dl.h>
19 #include <sys/ioctl.h>
20 #include <netinet/in.h>
33 unsigned i1, i2, i3, i4, g1, g2, g3, g4;
34 unsigned e1, e2, e3, e4, e5, e6;
36 if( (so = socket( AF_INET, SOCK_DGRAM, 0 )) == -1)
37 err( 1, "can't open socket" );
39 printf( "multicast membership test program; " );
40 printf( "enter ? for list of commands\n" );
42 while( fgets( line, 79, stdin ) != NULL )
45 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
50 printf( "%s%s%s%s%s%s%s",
51 " j g.g.g.g i.i.i.i - join IP multicast group \n",
52 " l g.g.g.g i.i.i.i - leave IP multicast group \n",
53 " a ifname e.e.e.e.e.e - add ether multicast address \n",
54 " d ifname e.e.e.e.e.e - del ether multicast address \n",
55 " m ifname 1/0 - set/clear ether allmulti flag \n",
56 " p ifname 1/0 - set/clear ether promisc flag \n",
64 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
65 if( (n = sscanf( lineptr, "%u.%u.%u.%u %u.%u.%u.%u",
66 &g1, &g2, &g3, &g4, &i1, &i2, &i3, &i4 )) != 8 )
68 printf( "bad args\n" );
71 imr.imr_multiaddr.s_addr = (g1<<24) | (g2<<16) | (g3<<8) | g4;
72 imr.imr_multiaddr.s_addr = htonl(imr.imr_multiaddr.s_addr);
73 imr.imr_interface.s_addr = (i1<<24) | (i2<<16) | (i3<<8) | i4;
74 imr.imr_interface.s_addr = htonl(imr.imr_interface.s_addr);
75 if( setsockopt( so, IPPROTO_IP, IP_ADD_MEMBERSHIP,
76 &imr, sizeof(struct ip_mreq) ) == -1 )
77 warn( "can't join group" );
78 else printf( "group joined\n" );
85 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
86 if( (n = sscanf( lineptr, "%u.%u.%u.%u %u.%u.%u.%u",
87 &g1, &g2, &g3, &g4, &i1, &i2, &i3, &i4 )) != 8 )
89 printf( "bad args\n" );
92 imr.imr_multiaddr.s_addr = (g1<<24) | (g2<<16) | (g3<<8) | g4;
93 imr.imr_multiaddr.s_addr = htonl(imr.imr_multiaddr.s_addr);
94 imr.imr_interface.s_addr = (i1<<24) | (i2<<16) | (i3<<8) | i4;
95 imr.imr_interface.s_addr = htonl(imr.imr_interface.s_addr);
96 if( setsockopt( so, IPPROTO_IP, IP_DROP_MEMBERSHIP,
97 &imr, sizeof(struct ip_mreq) ) == -1 )
98 warn( "can't leave group" );
99 else printf( "group left\n" );
105 struct sockaddr_dl *dlp;
108 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
109 if( (n = sscanf( lineptr, "%s %x.%x.%x.%x.%x.%x",
110 ifr.ifr_name, &e1, &e2, &e3, &e4, &e5, &e6 )) != 7 )
112 printf( "bad args\n" );
115 dlp = (struct sockaddr_dl *)&ifr.ifr_addr;
116 dlp->sdl_len = sizeof(struct sockaddr_dl);
117 dlp->sdl_family = AF_LINK;
129 if( ioctl( so, SIOCADDMULTI, &ifr ) == -1 )
130 warn( "can't add ether address" );
131 else printf( "ether address added\n" );
137 struct sockaddr_dl *dlp;
140 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
141 if( (n = sscanf( lineptr, "%s %x.%x.%x.%x.%x.%x",
142 ifr.ifr_name, &e1, &e2, &e3, &e4, &e5, &e6 )) != 7 )
144 printf( "bad args\n" );
147 dlp = (struct sockaddr_dl *)&ifr.ifr_addr;
148 dlp->sdl_len = sizeof(struct sockaddr_dl);
149 dlp->sdl_family = AF_LINK;
161 if( ioctl( so, SIOCDELMULTI, &ifr ) == -1 )
162 warn( "can't delete ether address" );
163 else printf( "ether address deleted\n" );
170 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
171 if( (n = sscanf( lineptr, "%s %u", ifr.ifr_name, &f )) != 2 )
173 printf( "bad args\n" );
176 if( ioctl( so, SIOCGIFFLAGS, &ifr ) == -1 )
178 warn( "can't get interface flags" );
181 printf( "interface flags %x, ", ifr.ifr_flags );
183 if( f ) ifr.ifr_flags |= IFF_ALLMULTI;
184 else ifr.ifr_flags &= ~IFF_ALLMULTI;
185 if( ioctl( so, SIOCSIFFLAGS, &ifr ) == -1 )
187 else printf( "changed to %x\n", ifr.ifr_flags );
194 while( *lineptr == ' ' || *lineptr == '\t' ) ++lineptr;
195 if( (n = sscanf( lineptr, "%s %u", ifr.ifr_name, &f )) != 2 )
197 printf( "bad args\n" );
200 if( ioctl( so, SIOCGIFFLAGS, &ifr ) == -1 )
202 warn( "can't get interface flags" );
205 printf( "interface flags %x, ", ifr.ifr_flags );
207 if( f ) ifr.ifr_flags |= IFF_PROMISC;
208 else ifr.ifr_flags &= ~IFF_PROMISC;
209 if( ioctl( so, SIOCSIFFLAGS, &ifr ) == -1 )
211 else printf( "changed to %x\n", ifr.ifr_flags );
222 printf( "bad command\n" );