--- /dev/null
+/* $Id$ */
+
+/***
+ This file is part of avahi.
+
+ avahi is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ avahi is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+ Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with avahi; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+#include "util.h"
+#include "rr.h"
+
+AvahiKey *avahi_key_new(const gchar *name, guint16 class, guint16 type) {
+ AvahiKey *k;
+ g_assert(name);
+
+ k = g_new(AvahiKey, 1);
+ k->ref = 1;
+ k->name = avahi_normalize_name(name);
+ k->clazz = class;
+ k->type = type;
+
+/* g_message("%p %% ref=1", k); */
+
+ return k;
+}
+
+AvahiKey *avahi_key_ref(AvahiKey *k) {
+ g_assert(k);
+ g_assert(k->ref >= 1);
+
+ k->ref++;
+
+/* g_message("%p ++ ref=%i", k, k->ref); */
+
+ return k;
+}
+
+void avahi_key_unref(AvahiKey *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);
+ }
+}
+
+AvahiRecord *avahi_record_new(AvahiKey *k, guint32 ttl) {
+ AvahiRecord *r;
+
+ g_assert(k);
+
+ r = g_new(AvahiRecord, 1);
+ r->ref = 1;
+ r->key = avahi_key_ref(k);
+
+ memset(&r->data, 0, sizeof(r->data));
+
+ r->ttl = ttl != (guint32) -1 ? ttl : AVAHI_DEFAULT_TTL;
+
+ return r;
+}
+
+AvahiRecord *avahi_record_new_full(const gchar *name, guint16 class, guint16 type, guint32 ttl) {
+ AvahiRecord *r;
+ AvahiKey *k;
+
+ g_assert(name);
+
+ k = avahi_key_new(name, class, type);
+ r = avahi_record_new(k, ttl);
+ avahi_key_unref(k);
+
+ return r;
+}
+
+AvahiRecord *avahi_record_ref(AvahiRecord *r) {
+ g_assert(r);
+ g_assert(r->ref >= 1);
+
+ r->ref++;
+ return r;
+}
+
+void avahi_record_unref(AvahiRecord *r) {
+ g_assert(r);
+ g_assert(r->ref >= 1);
+
+ if ((--r->ref) <= 0) {
+ switch (r->key->type) {
+
+ case AVAHI_DNS_TYPE_SRV:
+ g_free(r->data.srv.name);
+ break;
+
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
+ g_free(r->data.ptr.name);
+ break;
+
+ case AVAHI_DNS_TYPE_HINFO:
+ g_free(r->data.hinfo.cpu);
+ g_free(r->data.hinfo.os);
+ break;
+
+ case AVAHI_DNS_TYPE_TXT:
+ avahi_string_list_free(r->data.txt.string_list);
+ break;
+
+ case AVAHI_DNS_TYPE_A:
+ case AVAHI_DNS_TYPE_AAAA:
+ break;
+
+ default:
+ g_free(r->data.generic.data);
+ }
+
+ avahi_key_unref(r->key);
+ g_free(r);
+ }
+}
+
+const gchar *avahi_dns_class_to_string(guint16 class) {
+ if (class & AVAHI_DNS_CACHE_FLUSH)
+ return "FLUSH";
+
+ switch (class) {
+ case AVAHI_DNS_CLASS_IN:
+ return "IN";
+ case AVAHI_DNS_CLASS_ANY:
+ return "ANY";
+ default:
+ return NULL;
+ }
+}
+
+const gchar *avahi_dns_type_to_string(guint16 type) {
+ switch (type) {
+ case AVAHI_DNS_TYPE_CNAME:
+ return "CNAME";
+ case AVAHI_DNS_TYPE_A:
+ return "A";
+ case AVAHI_DNS_TYPE_AAAA:
+ return "AAAA";
+ case AVAHI_DNS_TYPE_PTR:
+ return "PTR";
+ case AVAHI_DNS_TYPE_HINFO:
+ return "HINFO";
+ case AVAHI_DNS_TYPE_TXT:
+ return "TXT";
+ case AVAHI_DNS_TYPE_SRV:
+ return "SRV";
+ case AVAHI_DNS_TYPE_ANY:
+ return "ANY";
+ default:
+ return NULL;
+ }
+}
+
+gchar *avahi_key_to_string(const AvahiKey *k) {
+ g_assert(k);
+ g_assert(k->ref >= 1);
+
+ return g_strdup_printf("%s\t%s\t%s",
+ k->name,
+ avahi_dns_class_to_string(k->clazz),
+ avahi_dns_type_to_string(k->type));
+}
+
+gchar *avahi_record_to_string(const AvahiRecord *r) {
+ gchar *p, *s;
+ char buf[257], *t = NULL, *d = NULL;
+
+ g_assert(r);
+ g_assert(r->ref >= 1);
+
+ switch (r->key->type) {
+ case AVAHI_DNS_TYPE_A:
+ inet_ntop(AF_INET, &r->data.a.address.address, t = buf, sizeof(buf));
+ break;
+
+ case AVAHI_DNS_TYPE_AAAA:
+ inet_ntop(AF_INET6, &r->data.aaaa.address.address, t = buf, sizeof(buf));
+ break;
+
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME :
+
+ t = r->data.ptr.name;
+ break;
+
+ case AVAHI_DNS_TYPE_TXT:
+ t = d = avahi_string_list_to_string(r->data.txt.string_list);
+ break;
+
+ case AVAHI_DNS_TYPE_HINFO:
+
+ snprintf(t = buf, sizeof(buf), "\"%s\" \"%s\"", r->data.hinfo.cpu, r->data.hinfo.os);
+ break;
+
+ case AVAHI_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);
+
+ break;
+ }
+
+ p = avahi_key_to_string(r->key);
+ s = g_strdup_printf("%s %s ; ttl=%u", p, t ? t : "<unparsable>", r->ttl);
+ g_free(p);
+ g_free(d);
+
+ return s;
+}
+
+gboolean avahi_key_equal(const AvahiKey *a, const AvahiKey *b) {
+ g_assert(a);
+ g_assert(b);
+
+ if (a == b)
+ return TRUE;
+
+/* g_message("equal: %p %p", a, b); */
+
+ return avahi_domain_equal(a->name, b->name) &&
+ a->type == b->type &&
+ a->clazz == b->clazz;
+}
+
+gboolean avahi_key_pattern_match(const AvahiKey *pattern, const AvahiKey *k) {
+ g_assert(pattern);
+ g_assert(k);
+
+/* g_message("equal: %p %p", a, b); */
+
+ g_assert(!avahi_key_is_pattern(k));
+
+ if (pattern == k)
+ return TRUE;
+
+ return avahi_domain_equal(pattern->name, k->name) &&
+ (pattern->type == k->type || pattern->type == AVAHI_DNS_TYPE_ANY) &&
+ (pattern->clazz == k->clazz || pattern->clazz == AVAHI_DNS_CLASS_ANY);
+}
+
+gboolean avahi_key_is_pattern(const AvahiKey *k) {
+ g_assert(k);
+
+ return
+ k->type == AVAHI_DNS_TYPE_ANY ||
+ k->clazz == AVAHI_DNS_CLASS_ANY;
+}
+
+guint avahi_key_hash(const AvahiKey *k) {
+ g_assert(k);
+
+ return
+ avahi_domain_hash(k->name) +
+ k->type +
+ k->clazz;
+}
+
+static gboolean rdata_equal(const AvahiRecord *a, const AvahiRecord *b) {
+ g_assert(a);
+ g_assert(b);
+ g_assert(a->key->type == b->key->type);
+
+/* t = avahi_record_to_string(a); */
+/* g_message("comparing %s", t); */
+/* g_free(t); */
+
+/* t = avahi_record_to_string(b); */
+/* g_message("and %s", t); */
+/* g_free(t); */
+
+
+ switch (a->key->type) {
+ case AVAHI_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 &&
+ avahi_domain_equal(a->data.srv.name, b->data.srv.name);
+
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
+ return avahi_domain_equal(a->data.ptr.name, b->data.ptr.name);
+
+ case AVAHI_DNS_TYPE_HINFO:
+ return
+ !strcmp(a->data.hinfo.cpu, b->data.hinfo.cpu) &&
+ !strcmp(a->data.hinfo.os, b->data.hinfo.os);
+
+ case AVAHI_DNS_TYPE_TXT:
+ return avahi_string_list_equal(a->data.txt.string_list, b->data.txt.string_list);
+
+ case AVAHI_DNS_TYPE_A:
+ return memcmp(&a->data.a.address, &b->data.a.address, sizeof(AvahiIPv4Address)) == 0;
+
+ case AVAHI_DNS_TYPE_AAAA:
+ return memcmp(&a->data.aaaa.address, &b->data.aaaa.address, sizeof(AvahiIPv6Address)) == 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 avahi_record_equal_no_ttl(const AvahiRecord *a, const AvahiRecord *b) {
+ g_assert(a);
+ g_assert(b);
+
+ if (a == b)
+ return TRUE;
+
+ return
+ avahi_key_equal(a->key, b->key) &&
+ rdata_equal(a, b);
+}
+
+
+AvahiRecord *avahi_record_copy(AvahiRecord *r) {
+ AvahiRecord *copy;
+
+ copy = g_new(AvahiRecord, 1);
+ copy->ref = 1;
+ copy->key = avahi_key_ref(r->key);
+ copy->ttl = r->ttl;
+
+ switch (r->key->type) {
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
+ copy->data.ptr.name = g_strdup(r->data.ptr.name);
+ break;
+
+ case AVAHI_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 AVAHI_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 AVAHI_DNS_TYPE_TXT:
+ copy->data.txt.string_list = avahi_string_list_copy(r->data.txt.string_list);
+ break;
+
+ case AVAHI_DNS_TYPE_A:
+ copy->data.a.address = r->data.a.address;
+ break;
+
+ case AVAHI_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 avahi_key_get_estimate_size(AvahiKey *k) {
+ g_assert(k);
+
+ return strlen(k->name)+1+4;
+}
+
+guint avahi_record_get_estimate_size(AvahiRecord *r) {
+ guint n;
+ g_assert(r);
+
+ n = avahi_key_get_estimate_size(r->key) + 4 + 2;
+
+ switch (r->key->type) {
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
+ n += strlen(r->data.ptr.name) + 1;
+ break;
+
+ case AVAHI_DNS_TYPE_SRV:
+ n += 6 + strlen(r->data.srv.name) + 1;
+ break;
+
+ case AVAHI_DNS_TYPE_HINFO:
+ n += strlen(r->data.hinfo.os) + 1 + strlen(r->data.hinfo.cpu) + 1;
+ break;
+
+ case AVAHI_DNS_TYPE_TXT:
+ n += avahi_string_list_serialize(r->data.txt.string_list, NULL, 0);
+ break;
+
+ case AVAHI_DNS_TYPE_A:
+ n += sizeof(AvahiIPv4Address);
+ break;
+
+ case AVAHI_DNS_TYPE_AAAA:
+ n += sizeof(AvahiIPv6Address);
+ 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);
+
+ c = al < bl ? al : bl;
+ if ((ret = memcmp(a, b, c)))
+ 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 ? -1 : 1);
+}
+
+gint avahi_record_lexicographical_compare(AvahiRecord *a, AvahiRecord *b) {
+ gint r;
+/* gchar *t1, *t2; */
+
+ g_assert(a);
+ g_assert(b);
+
+/* t1 = avahi_record_to_string(a); */
+/* t2 = avahi_record_to_string(b); */
+/* g_message("lexicocmp: %s %s", t1, t2); */
+/* g_free(t1); */
+/* g_free(t2); */
+
+ if (a == b)
+ return 0;
+
+ if ((r = uint16_cmp(a->key->clazz, b->key->clazz)) ||
+ (r = uint16_cmp(a->key->type, b->key->type)))
+ return r;
+
+ switch (a->key->type) {
+
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
+ return avahi_binary_domain_cmp(a->data.ptr.name, b->data.ptr.name);
+
+ case AVAHI_DNS_TYPE_SRV: {
+ 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)
+ r = avahi_binary_domain_cmp(a->data.srv.name, b->data.srv.name);
+
+ return r;
+ }
+
+ case AVAHI_DNS_TYPE_HINFO: {
+
+ if ((r = strcmp(a->data.hinfo.cpu, b->data.hinfo.cpu)) ||
+ (r = strcmp(a->data.hinfo.os, b->data.hinfo.os)))
+ return r;
+
+ return 0;
+
+ }
+
+ case AVAHI_DNS_TYPE_TXT: {
+
+ guint8 *ma, *mb;
+ guint asize, bsize;
+
+ ma = g_new(guint8, asize = avahi_string_list_serialize(a->data.txt.string_list, NULL, 0));
+ mb = g_new(guint8, bsize = avahi_string_list_serialize(b->data.txt.string_list, NULL, 0));
+ avahi_string_list_serialize(a->data.txt.string_list, ma, asize);
+ avahi_string_list_serialize(b->data.txt.string_list, mb, bsize);
+
+ if (asize && bsize)
+ r = lexicographical_memcmp(ma, asize, mb, bsize);
+ else if (asize && !bsize)
+ r = 1;
+ else if (!asize && bsize)
+ r = -1;
+ else
+ r = 0;
+
+ g_free(ma);
+ g_free(mb);
+
+ return r;
+ }
+
+ case AVAHI_DNS_TYPE_A:
+ return memcmp(&a->data.a.address, &b->data.a.address, sizeof(AvahiIPv4Address));
+
+ case AVAHI_DNS_TYPE_AAAA:
+ return memcmp(&a->data.aaaa.address, &b->data.aaaa.address, sizeof(AvahiIPv6Address));
+
+ default:
+ return lexicographical_memcmp(a->data.generic.data, a->data.generic.size,
+ b->data.generic.data, b->data.generic.size);
+ }
+
+}
+
+gboolean avahi_record_is_goodbye(AvahiRecord *r) {
+ g_assert(r);
+
+ return r->ttl == 0;
+}
+
+gboolean avahi_key_valid(AvahiKey *k) {
+ g_assert(k);
+
+ if (!avahi_valid_domain_name(k->name))
+ return FALSE;
+
+ return TRUE;
+}
+
+gboolean avahi_record_valid(AvahiRecord *r) {
+ g_assert(r);
+
+ if (!avahi_key_valid(r->key))
+ return FALSE;
+
+ switch (r->key->type) {
+
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
+ return avahi_valid_domain_name(r->data.ptr.name);
+
+ case AVAHI_DNS_TYPE_SRV:
+ return avahi_valid_domain_name(r->data.srv.name);
+
+ case AVAHI_DNS_TYPE_HINFO:
+ return
+ strlen(r->data.hinfo.os) <= 255 &&
+ strlen(r->data.hinfo.cpu) <= 255;
+
+
+ case AVAHI_DNS_TYPE_TXT: {
+
+ AvahiStringList *strlst;
+
+ for (strlst = r->data.txt.string_list; strlst; strlst = strlst->next)
+ if (strlst->size > 255)
+ return FALSE;
+
+ return TRUE;
+ }
+ }
+
+
+ return TRUE;
+}
projects / catta / blobdiff