/* You should meke sure there is no additional record and nameserver record */
void DNSExpandCName(const char *DNSBody)
{
int AnswerCount = DNSGetAnswerCount(DNSBody);
int Itr = 1;
const char *Answer;
DNSRecordType Type;
char *Resource;
int ResourceLength;
int NameLength;
char *NameEnd; /* After terminated-zero */
char *DNSEnd;
if( AnswerCount < 1 )
{
return;
}
do
{
Answer = DNSGetAnswerRecordPosition(DNSBody, Itr);
Type = DNSGetRecordType(Answer);
if( Type == DNS_TYPE_CNAME )
{
ResourceLength = DNSGetResourceDataLength(Answer);
Resource = (char *)DNSGetResourceDataPos(Answer);
NameLength = DNSGetHostNameLength(DNSBody, Resource);
NameEnd = Resource + ResourceLength;
DNSEnd = (char *)DNSGetAnswerRecordPosition(DNSBody, AnswerCount + 1);
SET_16_BIT_U_INT(Resource - 2, NameLength + 1);
memmove(Resource + NameLength + 1, NameEnd, DNSEnd - NameEnd);
DNSCopyLable(DNSBody, Resource, Resource);
}
++Itr;
}while( Itr <= AnswerCount );
}
int IPv6AddressToNum(const char *asc, void *Buffer)
{
_16BIT_INT *buf_s = (_16BIT_INT *)Buffer;
const char *itr;
memset(Buffer, 0, 16);
for(; isspace(*asc); ++asc);
if( strstr(asc, "::") == NULL )
{ /* full format */
int a[8];
sscanf(asc, "%x:%x:%x:%x:%x:%x:%x:%x",
a, a + 1, a + 2, a + 3, a + 4, a + 5, a + 6, a + 7
);
SET_16_BIT_U_INT(buf_s, a[0]);
SET_16_BIT_U_INT(buf_s + 1, a[1]);
SET_16_BIT_U_INT(buf_s + 2, a[2]);
SET_16_BIT_U_INT(buf_s + 3, a[3]);
SET_16_BIT_U_INT(buf_s + 4, a[4]);
SET_16_BIT_U_INT(buf_s + 5, a[5]);
SET_16_BIT_U_INT(buf_s + 6, a[6]);
SET_16_BIT_U_INT(buf_s + 7, a[7]);
} else {
/* not full*/
if( asc[2] == '\0' || isspace(asc[2]) )
{
memset(Buffer, 0, 16);
return 0;
}
while(1)
{
int a;
itr = asc;
asc = strchr(asc, ':');
if( asc == NULL )
return 0;
if( itr == asc )
{
break;
}
sscanf(itr, "%x:", &a);
SET_16_BIT_U_INT(buf_s, a);
++buf_s;
++asc;
}
buf_s = (_16BIT_INT *)Buffer + 7;
for(; *asc != '\0'; ++asc);
while(1)
{
int a;
for(itr = asc; *itr != ':'; --itr);
if( *(itr + 1) == '\0' )
break;
sscanf(itr + 1, "%x", &a);
SET_16_BIT_U_INT(buf_s, a);
--buf_s;
asc = itr - 1;
if( *(itr - 1) == ':' )
break;
}
}
return 0;
}
