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#ifndef DNS_UTIL_H
#define DNS_UTIL_H 1
static inline char
dns_tolower(char c)
{
if (c >= 'A' && c <= 'Z')
c+='a'-'A';
return c;
}
/**
* Will compare names in accordance with RFC4343
*/
int dns_compare(const char *a, const char *b) ATTR_PURE;
int dns_ncompare(const char *a, const char *b, size_t n) ATTR_PURE;
/**
* Same as above but done by labels from right to left
*
* www.example.org and www.example.net would be compared as
* org = net (return first difference)
* example = example
* www = www
*/
int dns_compare_labels(const char *a, const char *b) ATTR_PURE;
/**
* Will match names in RFC4592 style
*
* this means *.foo.bar will match name.foo.bar
* but *DOES NOT* match something.name.foo.bar
*/
int dns_match_wildcard(const char *name, const char *mask) ATTR_PURE;
#endif
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