This file is part of GNUnet
Copyright (C) 2010-2015 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet 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
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
+ Affero General Public License for more details.
*/
/**
- * @file identity-provider/identity_attribute.c
+ * @file identity-attribute/identity_attribute.c
* @brief helper library to manage identity attributes
* @author Martin Schanzenbach
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "identity_attribute.h"
+#include "gnunet_identity_attribute_plugin.h"
+
+/**
+ * Handle for a plugin
+ */
+struct Plugin
+{
+ /**
+ * Name of the plugin
+ */
+ char *library_name;
+
+ /**
+ * Plugin API
+ */
+ struct GNUNET_IDENTITY_ATTRIBUTE_PluginFunctions *api;
+};
+
+/**
+ * Plugins
+ */
+static struct Plugin **attr_plugins;
+
+/**
+ * Number of plugins
+ */
+static unsigned int num_plugins;
+
+/**
+ * Init canary
+ */
+static int initialized;
+
+/**
+ * Add a plugin
+ */
+static void
+add_plugin (void* cls,
+ const char *library_name,
+ void *lib_ret)
+{
+ struct GNUNET_IDENTITY_ATTRIBUTE_PluginFunctions *api = lib_ret;
+ struct Plugin *plugin;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Loading attribute plugin `%s'\n",
+ library_name);
+ plugin = GNUNET_new (struct Plugin);
+ plugin->api = api;
+ plugin->library_name = GNUNET_strdup (library_name);
+ GNUNET_array_append (attr_plugins, num_plugins, plugin);
+}
+
+/**
+ * Load plugins
+ */
+static void
+init()
+{
+ if (GNUNET_YES == initialized)
+ return;
+ initialized = GNUNET_YES;
+ GNUNET_PLUGIN_load_all ("libgnunet_plugin_identity_attribute_", NULL,
+ &add_plugin, NULL);
+}
+
+/**
+ * Convert a type name to the corresponding number
+ *
+ * @param typename name to convert
+ * @return corresponding number, UINT32_MAX on error
+ */
+uint32_t
+GNUNET_IDENTITY_ATTRIBUTE_typename_to_number (const char *typename)
+{
+ unsigned int i;
+ struct Plugin *plugin;
+ uint32_t ret;
+
+ init ();
+ for (i = 0; i < num_plugins; i++)
+ {
+ plugin = attr_plugins[i];
+ if (UINT32_MAX != (ret = plugin->api->typename_to_number (plugin->api->cls,
+ typename)))
+ return ret;
+ }
+ return UINT32_MAX;
+}
+
+/**
+ * Convert a type number to the corresponding type string
+ *
+ * @param type number of a type
+ * @return corresponding typestring, NULL on error
+ */
+const char*
+GNUNET_IDENTITY_ATTRIBUTE_number_to_typename (uint32_t type)
+{
+ unsigned int i;
+ struct Plugin *plugin;
+ const char *ret;
+
+ init ();
+ for (i = 0; i < num_plugins; i++)
+ {
+ plugin = attr_plugins[i];
+ if (NULL != (ret = plugin->api->number_to_typename (plugin->api->cls,
+ type)))
+ return ret;
+ }
+ return NULL;
+}
+
+/**
+ * Convert human-readable version of a 'claim' of an attribute to the binary
+ * representation
+ *
+ * @param type type of the claim
+ * @param s human-readable string
+ * @param data set to value in binary encoding (will be allocated)
+ * @param data_size set to number of bytes in @a data
+ * @return #GNUNET_OK on success
+ */
+int
+GNUNET_IDENTITY_ATTRIBUTE_string_to_value (uint32_t type,
+ const char *s,
+ void **data,
+ size_t *data_size)
+{
+ unsigned int i;
+ struct Plugin *plugin;
+
+ init ();
+ for (i = 0; i < num_plugins; i++)
+ {
+ plugin = attr_plugins[i];
+ if (GNUNET_OK == plugin->api->string_to_value (plugin->api->cls,
+ type,
+ s,
+ data,
+ data_size))
+ return GNUNET_OK;
+ }
+ return GNUNET_SYSERR;
+}
+
+/**
+ * Convert the 'claim' of an attribute to a string
+ *
+ * @param type the type of attribute
+ * @param data claim in binary encoding
+ * @param data_size number of bytes in @a data
+ * @return NULL on error, otherwise human-readable representation of the claim
+ */
+char *
+GNUNET_IDENTITY_ATTRIBUTE_value_to_string (uint32_t type,
+ const void* data,
+ size_t data_size)
+{
+ unsigned int i;
+ struct Plugin *plugin;
+ char *ret;
+
+ init();
+ for (i = 0; i < num_plugins; i++)
+ {
+ plugin = attr_plugins[i];
+ if (NULL != (ret = plugin->api->value_to_string (plugin->api->cls,
+ type,
+ data,
+ data_size)))
+ return ret;
+ }
+ return NULL;
+}
/**
* Create a new attribute.
*
- * @param name the attribute name
+ * @param attr_name the attribute name
* @param type the attribute type
* @param data the attribute value
* @param data_size the attribute value size
*/
struct GNUNET_IDENTITY_ATTRIBUTE_Claim *
GNUNET_IDENTITY_ATTRIBUTE_claim_new (const char* attr_name,
- uint32_t attr_type,
+ uint32_t type,
const void* data,
size_t data_size)
{
attr = GNUNET_malloc (sizeof (struct GNUNET_IDENTITY_ATTRIBUTE_Claim) +
strlen (attr_name) + 1 +
data_size);
- attr->type = attr_type;
+ attr->type = type;
attr->data_size = data_size;
attr->version = 0;
write_ptr = (char*)&attr[1];
return attr;
}
+/**
+ * Add a new claim list entry.
+ *
+ * @param claim_list the attribute name
+ * @param attr_name the attribute name
+ * @param type the attribute type
+ * @param data the attribute value
+ * @param data_size the attribute value size
+ * @return
+ */
+void
+GNUNET_IDENTITY_ATTRIBUTE_list_add (struct GNUNET_IDENTITY_ATTRIBUTE_ClaimList *claim_list,
+ const char* attr_name,
+ uint32_t type,
+ const void* data,
+ size_t data_size)
+{
+ struct GNUNET_IDENTITY_ATTRIBUTE_ClaimListEntry *le;
+ le = GNUNET_new (struct GNUNET_IDENTITY_ATTRIBUTE_ClaimListEntry);
+ le->claim = GNUNET_IDENTITY_ATTRIBUTE_claim_new (attr_name,
+ type,
+ data,
+ data_size);
+ GNUNET_CONTAINER_DLL_insert (claim_list->list_head,
+ claim_list->list_tail,
+ le);
+}
+
size_t
GNUNET_IDENTITY_ATTRIBUTE_list_serialize_get_size (const struct GNUNET_IDENTITY_ATTRIBUTE_ClaimList *attrs)
{
struct GNUNET_IDENTITY_ATTRIBUTE_ClaimListEntry *le;
struct GNUNET_IDENTITY_ATTRIBUTE_ClaimListEntry *result_le;
struct GNUNET_IDENTITY_ATTRIBUTE_ClaimList *result;
- size_t len;
result = GNUNET_new (struct GNUNET_IDENTITY_ATTRIBUTE_ClaimList);
for (le = attrs->list_head; NULL != le; le = le->next)
{
result_le = GNUNET_new (struct GNUNET_IDENTITY_ATTRIBUTE_ClaimListEntry);
- len = sizeof (struct GNUNET_IDENTITY_ATTRIBUTE_Claim) + le->claim->data_size;
- result_le->claim = GNUNET_malloc (len);
- GNUNET_memcpy (result_le->claim,
- le->claim,
- len);
- result_le->claim->name = (const char*)&result_le->claim[1];
+ result_le->claim = GNUNET_IDENTITY_ATTRIBUTE_claim_new (le->claim->name,
+ le->claim->type,
+ le->claim->data,
+ le->claim->data_size);
GNUNET_CONTAINER_DLL_insert (result->list_head,
result->list_tail,
result_le);
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