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+/* trust-item.c - Trust item objects.
+ Copyright (C) 2000 Werner Koch (dd9jn)
+ Copyright (C) 2001, 2002, 2003, 2004 g10 Code GmbH
+
+ This file is part of GPGME.
+
+ GPGME 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.
+
+ GPGME 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 this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "util.h"
+#include "ops.h"
+#include "sema.h"
+
+
+/* Protects all reference counters in trust items. All other accesses
+ to a trust item are either read only or happen before the trust
+ item is available to the user. */
+DEFINE_STATIC_LOCK (trust_item_ref_lock);
+
+
+/* Create a new trust item. */
+gpgme_error_t
+_gpgme_trust_item_new (gpgme_trust_item_t *r_item)
+{
+ gpgme_trust_item_t item;
+
+ item = calloc (1, sizeof *item);
+ if (!item)
+ return gpg_error_from_errno (errno);
+ item->_refs = 1;
+ item->keyid = item->_keyid;
+ item->_keyid[16] = '\0';
+ item->owner_trust = item->_owner_trust;
+ item->_owner_trust[1] = '\0';
+ item->validity = item->_validity;
+ item->_validity[1] = '\0';
+ *r_item = item;
+ return 0;
+}
+
+
+/* Acquire a reference to ITEM. */
+void
+gpgme_trust_item_ref (gpgme_trust_item_t item)
+{
+ LOCK (trust_item_ref_lock);
+ item->_refs++;
+ UNLOCK (trust_item_ref_lock);
+}
+
+
+/* gpgme_trust_item_unref releases the trust item object. Note that
+ this function may not do an actual release if there are other
+ shallow copies of the object. You have to call this function for
+ every newly created trust item object as well as for every
+ gpgme_trust_item_ref() done on the trust item object. */
+void
+gpgme_trust_item_unref (gpgme_trust_item_t item)
+{
+ LOCK (trust_item_ref_lock);
+ assert (item->_refs > 0);
+ if (--item->_refs)
+ {
+ UNLOCK (trust_item_ref_lock);
+ return;
+ }
+ UNLOCK (trust_item_ref_lock);
+
+ if (item->name)
+ free (item->name);
+ free (item);
+}
+
+
+/* Compatibility interfaces. */
+void
+gpgme_trust_item_release (gpgme_trust_item_t item)
+{
+ gpgme_trust_item_unref (item);
+}
+
+/* Return the value of the attribute WHAT of ITEM, which has to be
+ representable by a string. */
+const char *gpgme_trust_item_get_string_attr (gpgme_trust_item_t item,
+ _gpgme_attr_t what,
+ const void *reserved, int idx)
+{
+ const char *val = NULL;
+
+ if (!item)
+ return NULL;
+ if (reserved)
+ return NULL;
+ if (idx)
+ return NULL;
+
+ switch (what)
+ {
+ case GPGME_ATTR_KEYID:
+ val = item->keyid;
+ break;
+
+ case GPGME_ATTR_OTRUST:
+ val = item->owner_trust;
+ break;
+
+ case GPGME_ATTR_VALIDITY:
+ val = item->validity;
+ break;
+
+ case GPGME_ATTR_USERID:
+ val = item->name;
+ break;
+
+ default:
+ break;
+ }
+ return val;
+}
+
+
+/* Return the value of the attribute WHAT of KEY, which has to be
+ representable by an integer. IDX specifies a running index if the
+ attribute appears more than once in the key. */
+int gpgme_trust_item_get_int_attr (gpgme_trust_item_t item, _gpgme_attr_t what,
+ const void *reserved, int idx)
+{
+ int val = 0;
+
+ if (!item)
+ return 0;
+ if (reserved)
+ return 0;
+ if (idx)
+ return 0;
+
+ switch (what)
+ {
+ case GPGME_ATTR_LEVEL:
+ val = item->level;
+ break;
+
+ case GPGME_ATTR_TYPE:
+ val = item->type;
+ break;
+
+ default:
+ break;
+ }
+ return val;
+}