/* $NetBSD: parsewhoisline.c,v 1.2 2012/07/22 14:27:36 darrenr Exp $ */ /* * Copyright (C) 2012 by Darren Reed. * * See the IPFILTER.LICENCE file for details on licencing. * * Id: parsewhoisline.c,v 1.1.1.2 2012/07/22 13:44:40 darrenr Exp $ */ #include "ipf.h" /* Microsoft Corp MICROSOFT19 (NET-198-136-97-0-1) 198.137.97.0 - 198.137.97.255 Microsoft Corp SAVV-S233053-6 (NET-206-79-74-32-1) 206.79.74.32 - 206.79.74.47 */ int parsewhoisline(line, addrp, maskp) char *line; addrfamily_t *addrp; addrfamily_t *maskp; { struct in_addr a1, a2; char *src = line; char *s = NULL; if (line == NULL) return -1; while (*src != '\0') { s = strchr(src, '('); if (s == NULL) break; if (strncmp(s, "(NET", 4)) { src = s + 1; } break; } if (s == NULL) return -1; memset(addrp, 0x00, sizeof(*maskp)); memset(maskp, 0x00, sizeof(*maskp)); if (*(s + 4) == '6') { #ifdef USE_INET6 i6addr_t a61, a62; s = strchr(s, ')'); if (s == NULL || *++s != ' ') return -1; /* * Parse the IPv6 */ if (inet_pton(AF_INET6, s, &a61.in6) != 1) return -1; s = strchr(s, ' '); if (s == NULL || strncmp(s, " - ", 3)) return -1; s += 3; if (inet_pton(AF_INET6, s, &a62) != 1) return -1; addrp->adf_addr = a61; addrp->adf_family = AF_INET6; addrp->adf_len = offsetof(addrfamily_t, adf_addr) + sizeof(struct in6_addr); maskp->adf_addr.i6[0] = ~(a62.i6[0] ^ a61.i6[0]); maskp->adf_addr.i6[1] = ~(a62.i6[1] ^ a61.i6[1]); maskp->adf_addr.i6[2] = ~(a62.i6[2] ^ a61.i6[2]); maskp->adf_addr.i6[3] = ~(a62.i6[3] ^ a61.i6[3]); /* * If the mask that's been generated isn't a consecutive mask * then we can't add it into a pool. */ if (count6bits(maskp->adf_addr.i6) == -1) return -1; maskp->adf_family = AF_INET6; maskp->adf_len = addrp->adf_len; if (IP6_MASKNEQ(&addrp->adf_addr.in6, &maskp->adf_addr.in6, &addrp->adf_addr.in6)) { return -1; } return 0; #else return -1; #endif } s = strchr(s, ')'); if (s == NULL || *++s != ' ') return -1; s++; if (inet_aton(s, &a1) != 1) return -1; s = strchr(s, ' '); if (s == NULL || strncmp(s, " - ", 3)) return -1; s += 3; if (inet_aton(s, &a2) != 1) return -1; addrp->adf_addr.in4 = a1; addrp->adf_family = AF_INET; addrp->adf_len = offsetof(addrfamily_t, adf_addr) + sizeof(struct in_addr); maskp->adf_addr.in4.s_addr = ~(a2.s_addr ^ a1.s_addr); /* * If the mask that's been generated isn't a consecutive mask then * we can't add it into a pool. */ if (count4bits(maskp->adf_addr.in4.s_addr) == -1) return -1; maskp->adf_family = AF_INET; maskp->adf_len = addrp->adf_len; bzero((char *)maskp + maskp->adf_len, sizeof(*maskp) - maskp->adf_len); if ((addrp->adf_addr.in4.s_addr & maskp->adf_addr.in4.s_addr) != addrp->adf_addr.in4.s_addr) return -1; return 0; }