5 #include <sys/socket.h>
7 #include <netinet/in.h>
8 #ifndef SIOCGIFCONF /* whatever works */
9 #include <sys/sockio.h>
18 static int ipmeok = 0;
22 struct ip_address *ip;
25 if (ipme_init() != 1) return -1;
26 for (i = 0;i < ipme.len;++i)
27 if (byte_equal(&ipme.ix[i].ip,4,ip))
32 static stralloc buf = {0};
39 struct sockaddr_in *sin;
45 if (!ipalloc_readyplus(&ipme,0)) return 0;
49 if ((s = socket(AF_INET,SOCK_STREAM,0)) == -1) return -1;
53 if (!stralloc_ready(&buf,len)) { close(s); return 0; }
57 if (ioctl(s,SIOCGIFCONF,&ifc) >= 0) /* > is for System V */
58 if (ifc.ifc_len + sizeof(*ifr) + 64 < len) { /* what a stupid interface */
59 buf.len = ifc.ifc_len;
62 if (len > 200000) { close(s); return -1; }
63 len += 100 + (len >> 2);
66 while (x < buf.s + buf.len) {
67 ifr = (struct ifreq *) x;
69 len = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
70 if (len < sizeof(*ifr))
72 if (ifr->ifr_addr.sa_family == AF_INET) {
73 sin = (struct sockaddr_in *) &ifr->ifr_addr;
74 byte_copy(&ix.ip,4,&sin->sin_addr);
75 if (ioctl(s,SIOCGIFFLAGS,x) == 0)
76 if (ifr->ifr_flags & IFF_UP)
77 if (!ipalloc_append(&ipme,&ix)) { close(s); return 0; }
81 if (ioctl(s,SIOCGIFFLAGS,x) == 0)
82 if (ifr->ifr_flags & IFF_UP)
83 if (ioctl(s,SIOCGIFADDR,x) == 0)
84 if (ifr->ifr_addr.sa_family == AF_INET) {
85 sin = (struct sockaddr_in *) &ifr->ifr_addr;
86 byte_copy(&ix.ip,4,&sin->sin_addr);
87 if (!ipalloc_append(&ipme,&ix)) { close(s); return 0; }