static int config_sortlist(struct apattern **sortlist, int *nsort,
const char *str)
{
struct apattern pat, *newsort;
const char *q;
/* Add sortlist entries. */
while (*str && *str != ';')
{
q = str;
while (*q && *q != '/' && *q != ';' && !isspace((unsigned char)*q))
q++;
if (ip_addr(str, q - str, &pat.addr) == 0)
{
/* We have a pattern address; now determine the mask. */
if (*q == '/')
{
str = q + 1;
while (*q && *q != ';' && !isspace((unsigned char)*q))
q++;
if (ip_addr(str, q - str, &pat.mask) != 0)
natural_mask(&pat);
}
else
natural_mask(&pat);
/* Add this pattern to our list. */
newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern));
if (!newsort)
return ARES_ENOMEM;
newsort[*nsort] = pat;
*sortlist = newsort;
(*nsort)++;
}
else
{
while (*q && *q != ';' && !isspace((unsigned char)*q))
q++;
}
str = q;
while (isspace((unsigned char)*str))
str++;
}
return ARES_SUCCESS;
}
static int config_sortlist(struct apattern **sortlist, int *nsort,
const char *str)
{
struct apattern pat;
const char *q;
/* Add sortlist entries. */
while (*str && *str != ';')
{
int bits;
char ipbuf[16], ipbufpfx[32];
/* Find just the IP */
q = str;
while (*q && *q != '/' && *q != ';' && !ISSPACE(*q))
q++;
memcpy(ipbuf, str, q-str);
ipbuf[q-str] = '\0';
/* Find the prefix */
if (*q == '/')
{
const char *str2 = q+1;
while (*q && *q != ';' && !ISSPACE(*q))
q++;
memcpy(ipbufpfx, str, q-str);
ipbufpfx[q-str] = '\0';
str = str2;
}
else
ipbufpfx[0] = '\0';
/* Lets see if it is CIDR */
/* First we'll try IPv6 */
if ((bits = ares_inet_net_pton(AF_INET6, ipbufpfx[0] ? ipbufpfx : ipbuf,
&pat.addrV6,
sizeof(pat.addrV6))) > 0)
{
pat.type = PATTERN_CIDR;
pat.mask.bits = (unsigned short)bits;
pat.family = AF_INET6;
if (!sortlist_alloc(sortlist, nsort, &pat))
return ARES_ENOMEM;
}
else if (ipbufpfx[0] &&
(bits = ares_inet_net_pton(AF_INET, ipbufpfx, &pat.addrV4,
sizeof(pat.addrV4))) > 0)
{
pat.type = PATTERN_CIDR;
pat.mask.bits = (unsigned short)bits;
pat.family = AF_INET;
if (!sortlist_alloc(sortlist, nsort, &pat))
return ARES_ENOMEM;
}
/* See if it is just a regular IP */
else if (ip_addr(ipbuf, q-str, &pat.addrV4) == 0)
{
if (ipbufpfx[0])
{
memcpy(ipbuf, str, q-str);
ipbuf[q-str] = '\0';
if (ip_addr(ipbuf, q-str, &pat.mask.addr4) != 0)
natural_mask(&pat);
}
else
natural_mask(&pat);
pat.family = AF_INET;
pat.type = PATTERN_MASK;
if (!sortlist_alloc(sortlist, nsort, &pat))
return ARES_ENOMEM;
}
else
{
while (*q && *q != ';' && !ISSPACE(*q))
q++;
}
str = q;
while (ISSPACE(*str))
str++;
}
return ARES_SUCCESS;
}