123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152 |
- /*
- This file is part of GNUnet
- Copyright (C) 2012, 2013 GNUnet e.V.
- GNUnet is free software: you can redistribute it and/or modify it
- under the terms of the GNU Affero 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
- Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * @author Christian Grothoff
- *
- * @file
- * Plugin API for GNS record types
- *
- * @defgroup gnsrecord-plugin GNS Record plugin API
- * To be implemented by applications defining new record types.
- *
- * @see [Documentation](https://gnunet.org/gns-plugins)
- *
- * @{
- */
- #ifndef GNUNET_GNSRECORD_PLUGIN_H
- #define GNUNET_GNSRECORD_PLUGIN_H
- #ifdef __cplusplus
- extern "C"
- {
- #if 0 /* keep Emacsens' auto-indent happy */
- }
- #endif
- #endif
- /**
- * Function called to convert the binary value @a data of a record of
- * type @a type to a human-readable string.
- *
- * @param cls closure
- * @param type type of the record
- * @param data value in binary encoding
- * @param data_size number of bytes in @a data
- * @return NULL on error, otherwise human-readable representation of the value
- */
- typedef char *
- (*GNUNET_GNSRECORD_ValueToStringFunction) (void *cls,
- uint32_t type,
- const void *data,
- size_t data_size);
- /**
- * Function called to convert human-readable version of the value @a s
- * of a record of type @a type to the respective binary
- * representation.
- *
- * @param cls closure
- * @param type type of the record
- * @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
- */
- typedef int
- (*GNUNET_GNSRECORD_StringToValueFunction) (void *cls,
- uint32_t type,
- const char *s,
- void **data,
- size_t *data_size);
- /**
- * Function called to convert a type name (i.e. "AAAA") to the
- * corresponding number.
- *
- * @param cls closure
- * @param dns_typename name to convert
- * @return corresponding number, UINT32_MAX on error
- */
- typedef uint32_t
- (*GNUNET_GNSRECORD_TypenameToNumberFunction) (void *cls,
- const char *dns_typename);
- /**
- * Function called to convert a type number (i.e. 1) to the
- * corresponding type string (i.e. "A")
- *
- * @param cls closure
- * @param type number of a type to convert
- * @return corresponding typestring, NULL on error
- */
- typedef const char *
- (*GNUNET_GNSRECORD_NumberToTypenameFunction) (void *cls,
- uint32_t type);
- /**
- * Each plugin is required to return a pointer to a struct of this
- * type as the return value from its entry point.
- */
- struct GNUNET_GNSRECORD_PluginFunctions
- {
- /**
- * Closure for all of the callbacks.
- */
- void *cls;
- /**
- * Conversion to string.
- */
- GNUNET_GNSRECORD_ValueToStringFunction value_to_string;
- /**
- * Conversion to binary.
- */
- GNUNET_GNSRECORD_StringToValueFunction string_to_value;
- /**
- * Typename to number.
- */
- GNUNET_GNSRECORD_TypenameToNumberFunction typename_to_number;
- /**
- * Number to typename.
- */
- GNUNET_GNSRECORD_NumberToTypenameFunction number_to_typename;
- };
- /** @} */ /* end of group */
- #if 0 /* keep Emacsens' auto-indent happy */
- {
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif
|