#include "util.h"
#include "rr.h"
+#include "dns.h"
flxKey *flx_key_new(const gchar *name, guint16 class, guint16 type) {
flxKey *k;
}
}
-flxRecord *flx_record_new(flxKey *k, gconstpointer data, guint16 size, guint32 ttl) {
+flxRecord *flx_record_new(flxKey *k) {
flxRecord *r;
g_assert(k);
- g_assert(data);
- g_assert(size > 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;
+
+ memset(&r->data, 0, sizeof(r->data));
+
+ r->ttl = FLX_DEFAULT_TTL;
return r;
}
-flxRecord *flx_record_new_full(const gchar *name, guint16 class, guint16 type, gconstpointer data, guint16 size, guint32 ttl) {
+flxRecord *flx_record_new_full(const gchar *name, guint16 class, guint16 type) {
flxRecord *r;
flxKey *k;
+
+ g_assert(name);
k = flx_key_new(name, class, type);
- r = flx_record_new(k, data, size, ttl);
+ r = flx_record_new(k);
flx_key_unref(k);
return r;
g_assert(r->ref >= 1);
if ((--r->ref) <= 0) {
+ switch (r->key->type) {
+
+ case FLX_DNS_TYPE_SRV:
+ g_free(r->data.srv.name);
+ break;
+
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME:
+ g_free(r->data.ptr.name);
+ break;
+
+ case FLX_DNS_TYPE_HINFO:
+ g_free(r->data.hinfo.cpu);
+ g_free(r->data.hinfo.os);
+ break;
+
+ case FLX_DNS_TYPE_TXT:
+ flx_string_list_free(r->data.txt.string_list);
+ break;
+
+ case FLX_DNS_TYPE_A:
+ case FLX_DNS_TYPE_AAAA:
+ break;
+
+ default:
+ g_free(r->data.generic.data);
+ }
+
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_CACHE_FLUSH)
+ return "FLUSH";
+
if (class == FLX_DNS_CLASS_IN)
return "IN";
return "TXT";
case FLX_DNS_TYPE_SRV:
return "SRV";
+ case FLX_DNS_TYPE_ANY:
+ return "ANY";
default:
return NULL;
}
}
-gchar *flx_key_to_string(flxKey *k) {
+gchar *flx_key_to_string(const 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 *flx_record_to_string(const flxRecord *r) {
gchar *p, *s;
- char t[257] = "<unparsable>";
+ char buf[257], *t = NULL, *d = NULL;
switch (r->key->type) {
case FLX_DNS_TYPE_A:
- inet_ntop(AF_INET, r->data, t, sizeof(t));
+ inet_ntop(AF_INET, &r->data.a.address.address, t = buf, sizeof(buf));
break;
case FLX_DNS_TYPE_AAAA:
- inet_ntop(AF_INET6, r->data, t, sizeof(t));
+ inet_ntop(AF_INET6, &r->data.aaaa.address.address, t = buf, sizeof(buf));
break;
- case FLX_DNS_TYPE_PTR: {
- 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_PTR:
+ case FLX_DNS_TYPE_CNAME :
- case FLX_DNS_TYPE_TXT: {
- g_assert(((guchar*) r->data)[0] == r->size-1);
+ t = r->data.ptr.name;
+ break;
- memcpy(t, r->data+1, ((guchar*) r->data)[0]);
- t[((guchar*) r->data)[0]] = 0;
+ case FLX_DNS_TYPE_TXT:
+ t = d = flx_string_list_to_string(r->data.txt.string_list);
break;
- }
- case FLX_DNS_TYPE_HINFO: {
- gchar *s2;
- gchar hi1[256], hi2[256];
- guchar len;
-
- if ((size_t) (len = ((guchar*) r->data)[0]) + 2 <= r->size) {
- guchar len2;
- memcpy(hi1, (gchar*) r->data +1, len);
- hi1[len] = 0;
-
- if ((size_t) (len2 = ((guchar*) r->data)[len+1]) + len + 2 <= r->size) {
- memcpy(hi2, (gchar*) r->data+len+2, len2);
- hi2[len2] = 0;
- snprintf(t, sizeof(t), "'%s' '%s'", hi1, hi2);
- }
-
- }
+ case FLX_DNS_TYPE_HINFO:
+ snprintf(t = buf, sizeof(buf), "\"%s\" \"%s\"", r->data.hinfo.cpu, r->data.hinfo.os);
break;
- }
- case FLX_DNS_TYPE_SRV: {
- char k[257];
- size_t l;
+ case FLX_DNS_TYPE_SRV:
+
+ snprintf(t = buf, sizeof(buf), "%u %u %u %s",
+ r->data.srv.priority,
+ r->data.srv.weight,
+ r->data.srv.port,
+ r->data.srv.name);
- 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);
break;
- }
}
p = flx_key_to_string(r->key);
- s = g_strdup_printf("[%s %s ; ttl=%u]", p, t, r->ttl);
+ s = g_strdup_printf("%s %s ; ttl=%u", p, t ? t : "<unparsable>", r->ttl);
g_free(p);
+ g_free(d);
return s;
}
/* g_message("equal: %p %p", a, b); */
- return strcmp(a->name, b->name) == 0 && a->type == b->type && a->class == b->class;
+ return flx_domain_equal(a->name, b->name) &&
+ a->type == b->type &&
+ a->class == b->class;
+}
+
+gboolean flx_key_pattern_match(const flxKey *pattern, const flxKey *k) {
+ g_assert(pattern);
+ g_assert(k);
+
+/* g_message("equal: %p %p", a, b); */
+
+ g_assert(!flx_key_is_pattern(k));
+
+ return flx_domain_equal(pattern->name, k->name) &&
+ (pattern->type == k->type || pattern->type == FLX_DNS_TYPE_ANY) &&
+ pattern->class == k->class;
+}
+
+gboolean flx_key_is_pattern(const flxKey *k) {
+ g_assert(k);
+
+ return k->type == FLX_DNS_TYPE_ANY;
}
+
guint flx_key_hash(const flxKey *k) {
g_assert(k);
- return g_str_hash(k->name) + k->type + k->class;
+ return flx_domain_hash(k->name) + k->type + k->class;
+}
+
+static gboolean rdata_equal(const flxRecord *a, const flxRecord *b) {
+ g_assert(a);
+ g_assert(b);
+ g_assert(a->key->type == b->key->type);
+
+/* t = flx_record_to_string(a); */
+/* g_message("comparing %s", t); */
+/* g_free(t); */
+
+/* t = flx_record_to_string(b); */
+/* g_message("and %s", t); */
+/* g_free(t); */
+
+
+ switch (a->key->type) {
+ case FLX_DNS_TYPE_SRV:
+ return
+ a->data.srv.priority == b->data.srv.priority &&
+ a->data.srv.weight == b->data.srv.weight &&
+ a->data.srv.port == b->data.srv.port &&
+ flx_domain_equal(a->data.srv.name, b->data.srv.name);
+
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME:
+ return flx_domain_equal(a->data.ptr.name, b->data.ptr.name);
+
+ case FLX_DNS_TYPE_HINFO:
+ return
+ !strcmp(a->data.hinfo.cpu, b->data.hinfo.cpu) &&
+ !strcmp(a->data.hinfo.os, b->data.hinfo.os);
+
+ case FLX_DNS_TYPE_TXT:
+ return flx_string_list_equal(a->data.txt.string_list, b->data.txt.string_list);
+
+ case FLX_DNS_TYPE_A:
+ return memcmp(&a->data.a.address, &b->data.a.address, sizeof(flxIPv4Address)) == 0;
+
+ case FLX_DNS_TYPE_AAAA:
+ return memcmp(&a->data.aaaa.address, &b->data.aaaa.address, sizeof(flxIPv6Address)) == 0;
+
+ default:
+ return a->data.generic.size == b->data.generic.size &&
+ (a->data.generic.size == 0 || memcmp(a->data.generic.data, b->data.generic.data, a->data.generic.size) == 0);
+ }
+
+}
+
+gboolean flx_record_equal_no_ttl(const flxRecord *a, const flxRecord *b) {
+ g_assert(a);
+ g_assert(b);
+
+ return
+ flx_key_equal(a->key, b->key) &&
+ rdata_equal(a, b);
+}
+
+
+flxRecord *flx_record_copy(flxRecord *r) {
+ flxRecord *copy;
+
+ copy = g_new(flxRecord, 1);
+ copy->ref = 1;
+ copy->key = flx_key_ref(r->key);
+ copy->ttl = r->ttl;
+
+ switch (r->key->type) {
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME:
+ copy->data.ptr.name = g_strdup(r->data.ptr.name);
+ break;
+
+ case FLX_DNS_TYPE_SRV:
+ copy->data.srv.priority = r->data.srv.priority;
+ copy->data.srv.weight = r->data.srv.weight;
+ copy->data.srv.port = r->data.srv.port;
+ copy->data.srv.name = g_strdup(r->data.srv.name);
+ break;
+
+ case FLX_DNS_TYPE_HINFO:
+ copy->data.hinfo.os = g_strdup(r->data.hinfo.os);
+ copy->data.hinfo.cpu = g_strdup(r->data.hinfo.cpu);
+ break;
+
+ case FLX_DNS_TYPE_TXT:
+ copy->data.txt.string_list = flx_string_list_copy(r->data.txt.string_list);
+ break;
+
+ case FLX_DNS_TYPE_A:
+ copy->data.a.address = r->data.a.address;
+ break;
+
+ case FLX_DNS_TYPE_AAAA:
+ copy->data.aaaa.address = r->data.aaaa.address;
+ break;
+
+ default:
+ copy->data.generic.data = g_memdup(r->data.generic.data, r->data.generic.size);
+ copy->data.generic.size = r->data.generic.size;
+ break;
+
+ }
+
+ return copy;
+}
+
+
+guint flx_key_get_estimate_size(flxKey *k) {
+ g_assert(k);
+
+ return strlen(k->name)+1+4;
}
-gboolean flx_record_equal(const flxRecord *a, const flxRecord *b) {
+guint flx_record_get_estimate_size(flxRecord *r) {
+ guint n;
+ g_assert(r);
+
+ n = flx_key_get_estimate_size(r->key) + 4 + 2;
+
+ switch (r->key->type) {
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME:
+ n += strlen(r->data.ptr.name) + 1;
+ break;
+
+ case FLX_DNS_TYPE_SRV:
+ n += 6 + strlen(r->data.srv.name) + 1;
+ break;
+
+ case FLX_DNS_TYPE_HINFO:
+ n += strlen(r->data.hinfo.os) + 1 + strlen(r->data.hinfo.cpu) + 1;
+ break;
+
+ case FLX_DNS_TYPE_TXT:
+ n += flx_string_list_serialize(r->data.txt.string_list, NULL, 0);
+ break;
+
+ case FLX_DNS_TYPE_A:
+ n += sizeof(flxIPv4Address);
+ break;
+
+ case FLX_DNS_TYPE_AAAA:
+ n += sizeof(flxIPv6Address);
+ break;
+
+ default:
+ n += r->data.generic.size;
+ }
+
+ return n;
+}
+
+static gint lexicographical_memcmp(gconstpointer a, size_t al, gconstpointer b, size_t bl) {
+ size_t c;
+ gint ret;
+
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;
+ c = al < bl ? al : bl;
+ if ((ret = memcmp(a, b, c)) != 0)
+ return ret;
+
+ if (al == bl)
+ return 0;
+ else
+ return al == c ? 1 : -1;
+}
+
+static gint uint16_cmp(guint16 a, guint16 b) {
+ return a == b ? 0 : (a < b ? a : b);
+}
+
+static gint lexicographical_domain_cmp(const gchar *a, const gchar *b) {
+ g_assert(a);
+ g_assert(b);
+
+
+ for (;;) {
+ gchar t1[64];
+ gchar t2[64];
+ size_t al, bl;
+ gint r;
+
+ if (!a && !b)
+ return 0;
+
+ if (a && !b)
+ return 1;
+
+ if (b && !a)
+ return -1;
+
+ flx_unescape_label(t1, sizeof(t1), &a);
+ flx_unescape_label(t2, sizeof(t2), &b);
+
+ al = strlen(t1);
+ bl = strlen(t2);
+
+ if (al != bl)
+ return al < bl ? -1 : 1;
+
+ if ((r = strcmp(t1, t2)) != 0)
+ return r;
+ }
+}
+
+gint flx_record_lexicographical_compare(flxRecord *a, flxRecord *b) {
+ g_assert(a);
+ g_assert(b);
+
+ if (a->key->class < b->key->class)
+ return -1;
+ else if (a->key->class > b->key->class)
+ return 1;
+
+ if (a->key->type < b->key->type)
+ return -1;
+ else if (a->key->type > b->key->type)
+ return 1;
+
+ switch (a->key->type) {
+
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME:
+ return lexicographical_domain_cmp(a->data.ptr.name, b->data.ptr.name);
+
+ case FLX_DNS_TYPE_SRV: {
+ gint r;
+ if ((r = uint16_cmp(a->data.srv.priority, b->data.srv.priority)) != 0 ||
+ (r = uint16_cmp(a->data.srv.weight, b->data.srv.weight)) != 0 ||
+ (r = uint16_cmp(a->data.srv.port, b->data.srv.port)) != 0)
+ return lexicographical_domain_cmp(a->data.srv.name, b->data.srv.name);
+ }
+
+ case FLX_DNS_TYPE_HINFO: {
+ size_t al = strlen(a->data.hinfo.cpu), bl = strlen(b->data.hinfo.cpu);
+ gint r;
+
+ if (al != bl)
+ return al < bl ? -1 : 1;
+
+ if ((r = strcmp(a->data.hinfo.cpu, b->data.hinfo.cpu)) != 0)
+ return r;
+
+ al = strlen(a->data.hinfo.os), bl = strlen(b->data.hinfo.os);
+
+ if (al != bl)
+ return al < bl ? -1 : 1;
+
+ if ((r = strcmp(a->data.hinfo.os, b->data.hinfo.os)) != 0)
+ return r;
+
+ return 0;
+
+ }
+
+ case FLX_DNS_TYPE_TXT: {
+
+ guint8 *ma, *mb;
+ guint asize, bsize;
+ gint r;
+
+ ma = g_new(guint8, asize = flx_string_list_serialize(a->data.txt.string_list, NULL, 0));
+ mb = g_new(guint8, bsize = flx_string_list_serialize(b->data.txt.string_list, NULL, 0));
+ flx_string_list_serialize(a->data.txt.string_list, ma, asize);
+ flx_string_list_serialize(a->data.txt.string_list, mb, bsize);
+
+ r = lexicographical_memcmp(ma, asize, mb, bsize);
+ g_free(ma);
+ g_free(mb);
+
+ return r;
+ }
+
+ case FLX_DNS_TYPE_A:
+ return memcmp(&a->data.a.address, &b->data.a.address, sizeof(flxIPv4Address));
+
+ case FLX_DNS_TYPE_AAAA:
+ return memcmp(&a->data.aaaa.address, &b->data.aaaa.address, sizeof(flxIPv6Address));
+
+ default:
+ return lexicographical_memcmp(a->data.generic.data, a->data.generic.size,
+ b->data.generic.data, b->data.generic.size);
+ }
+
}
projects / catta / blobdiff