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#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include "util.h"
#include "rr.h"
flxKey *flx_key_new(const gchar *name, guint16 class, guint16 type) {
flxKey *k;
g_assert(name);
k = g_new(flxKey, 1);
k->ref = 1;
k->name = flx_normalize_name(name);
k->class = class;
k->type = type;
/* g_message("%p %% ref=1", k); */
return k;
}
flxKey *flx_key_ref(flxKey *k) {
g_assert(k);
g_assert(k->ref >= 1);
k->ref++;
/* g_message("%p ++ ref=%i", k, k->ref); */
return k;
}
void flx_key_unref(flxKey *k) {
g_assert(k);
g_assert(k->ref >= 1);
/* g_message("%p -- ref=%i", k, k->ref-1); */
if ((--k->ref) <= 0) {
g_free(k->name);
g_free(k);
}
}
flxRecord *flx_record_new(flxKey *k, gconstpointer data, guint16 size, guint32 ttl) {
flxRecord *r;
g_assert(k);
g_assert(data);
g_assert(size > 0);
g_assert(ttl > 0);
r = g_new(flxRecord, 1);
r->ref = 1;
r->key = flx_key_ref(k);
r->data = g_memdup(data, size);
r->size = size;
r->ttl = ttl;
return r;
}
flxRecord *flx_record_new_full(const gchar *name, guint16 class, guint16 type, gconstpointer data, guint16 size, guint32 ttl) {
flxRecord *r;
flxKey *k;
k = flx_key_new(name, class, type);
r = flx_record_new(k, data, size, ttl);
flx_key_unref(k);
return r;
}
flxRecord *flx_record_ref(flxRecord *r) {
g_assert(r);
g_assert(r->ref >= 1);
r->ref++;
return r;
}
void flx_record_unref(flxRecord *r) {
g_assert(r);
g_assert(r->ref >= 1);
if ((--r->ref) <= 0) {
flx_key_unref(r->key);
g_free(r->data);
g_free(r);
}
}
const gchar *flx_dns_class_to_string(guint16 class) {
if (class == FLX_DNS_CLASS_IN)
return "IN";
return NULL;
}
const gchar *flx_dns_type_to_string(guint16 type) {
switch (type) {
case FLX_DNS_TYPE_CNAME:
return "CNAME";
case FLX_DNS_TYPE_A:
return "A";
case FLX_DNS_TYPE_AAAA:
return "AAAA";
case FLX_DNS_TYPE_PTR:
return "PTR";
case FLX_DNS_TYPE_HINFO:
return "HINFO";
case FLX_DNS_TYPE_TXT:
return "TXT";
case FLX_DNS_TYPE_SRV:
return "SRV";
default:
return NULL;
}
}
gchar *flx_key_to_string(flxKey *k) {
return g_strdup_printf("%s\t%s\t%s",
k->name,
flx_dns_class_to_string(k->class),
flx_dns_type_to_string(k->type));
}
gchar *flx_record_to_string(flxRecord *r) {
gchar *p, *s;
char t[257] = "<unparsable>";
switch (r->key->type) {
case FLX_DNS_TYPE_A:
inet_ntop(AF_INET, r->data, t, sizeof(t));
break;
case FLX_DNS_TYPE_AAAA:
inet_ntop(AF_INET6, r->data, t, sizeof(t));
break;
case FLX_DNS_TYPE_PTR:
case FLX_DNS_TYPE_TXT: {
size_t l;
l = r->size;
if (l > sizeof(t)-1)
l = sizeof(t)-1;
memcpy(t, r->data, l);
t[l] = 0;
break;
}
case FLX_DNS_TYPE_HINFO: {
char *s2;
if ((s2 = memchr(r->data, 0, r->size))) {
s2++;
if (memchr(s2, 0, r->size - ((char*) s2 - (char*) r->data)))
snprintf(t, sizeof(t), "'%s' '%s'", (char*) r->data, s2);
}
break;
}
case FLX_DNS_TYPE_SRV: {
char k[257];
size_t l;
l = r->size-6;
if (l > sizeof(k)-1)
l = sizeof(k)-1;
memcpy(k, r->data+6, l);
k[l] = 0;
snprintf(t, sizeof(t), "%u %u %u %s",
ntohs(((guint16*) r->data)[0]),
ntohs(((guint16*) r->data)[1]),
ntohs(((guint16*) r->data)[2]),
k);
}
}
p = flx_key_to_string(r->key);
s = g_strdup_printf("%s %s ; ttl=%u", p, t, r->ttl);
g_free(p);
return s;
}
gboolean flx_key_equal(const flxKey *a, const flxKey *b) {
g_assert(a);
g_assert(b);
/* g_message("equal: %p %p", a, b); */
return strcmp(a->name, b->name) == 0 && a->type == b->type && a->class == b->class;
}
guint flx_key_hash(const flxKey *k) {
g_assert(k);
return g_str_hash(k->name) + k->type + k->class;
}
gboolean flx_record_equal(const flxRecord *a, const flxRecord *b) {
g_assert(a);
g_assert(b);
return flx_key_equal(a->key, b->key) &&
a->ttl == b->ttl &&
a->size == b->size &&
memcmp(a->data, b->data, a->size) == 0;
}
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