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/*
* Copyright (C) 2012 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id: parsewhoisline.c,v 1.2.2.5 2012/07/22 08:04:24 darren_r 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;
}
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