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/* wtap_opttypes.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 2001 Gerald Combs
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef WTAP_OPT_TYPES_H
#define WTAP_OPT_TYPES_H
#include "ws_symbol_export.h"
struct wtap_optionblock;
typedef struct wtap_optionblock *wtap_optionblock_t;
/* Currently supported option blocks */
typedef enum {
WTAP_OPTION_BLOCK_IF_DESCR = 0,
WTAP_OPTION_BLOCK_IF_STATS,
WTAP_OPTION_BLOCK_NG_SECTION,
WTAP_OPTION_BLOCK_NG_NRB,
WTAP_OPTION_BLOCK_END_OF_LIST
} wtap_optionblock_type_t;
/* Currently supported option types */
typedef enum {
WTAP_OPTTYPE_UINT8,
WTAP_OPTTYPE_UINT64,
WTAP_OPTTYPE_STRING,
WTAP_OPTTYPE_CUSTOM
} wtap_opttype_e;
typedef enum {
WTAP_OPTTYPE_SUCCESS = 0,
WTAP_OPTTYPE_NOT_FOUND = -1,
WTAP_OPTTYPE_TYPE_MISMATCH = -2,
WTAP_OPTTYPE_ALREADY_EXISTS = -3
} wtap_opttype_return_val;
typedef void (*wtap_opttype_free_custom_func)(void* data);
struct wtap_opttype_custom
{
void* data;
guint size;
wtap_opttype_free_custom_func free_func;
};
typedef union {
guint8 uint8val;
guint64 uint64val;
char *stringval;
struct wtap_opttype_custom customval;
} wtap_option_type;
struct wtap_dumper;
typedef void (*wtap_block_create_func)(wtap_optionblock_t block);
typedef void (*wtap_mand_free_func)(wtap_optionblock_t block);
typedef void (*wtap_mand_copy_func)(wtap_optionblock_t dest_block, wtap_optionblock_t src_block);
typedef gboolean (*wtap_write_func)(struct wtap_dumper *wdh, wtap_optionblock_t block, int *err);
typedef guint32 (*wtap_opttype_option_write_size)(wtap_option_type* data); /**< does the option have data worth writing (Ex string option != NULL */
typedef gboolean (*wtap_opttype_option_write)(struct wtap_dumper* wdh, wtap_option_type* data, int *err); /**< does the option have data worth writing (Ex string option != NULL */
typedef struct wtap_optblock_reg {
const char *name; /**< name of option */
const char *description; /**< human-readable description of option */
wtap_opttype_e type; /**< type of that option */
wtap_opttype_option_write_size write_size_func; /**< Size of option in file (0 to not write option) */
wtap_opttype_option_write write_func; /**< write option data to dumper */
wtap_option_type option; /**< pointer to variable storing the value */
wtap_option_type default_val; /**< the default value of the option */
} wtap_optblock_reg_t;
/** Initialize option block types.
*
* This is currently just a placeholder as nothing needs to be
* initialized yet. Should handle "registration" when code is
* refactored to do so.
*/
void wtap_opttypes_initialize(void);
/** Create an option block by type
*
* Return a newly allocated option block with default options provided
*
* @param[in] block_type Option block type to be created
* @return Newly allocated option block
*/
WS_DLL_PUBLIC wtap_optionblock_t wtap_optionblock_create(int block_type);
/** Free an option block
*
* Needs to be called to clean up any allocated option block
*
* @param[in] block Block to be freed
*/
WS_DLL_PUBLIC void wtap_optionblock_free(wtap_optionblock_t block);
/** Provide mandatory data of an option block
*
* @param[in] block Block to retrieve mandatory data
* @return Option block mandatory data. Structure varies based on option block type
*/
WS_DLL_PUBLIC void* wtap_optionblock_get_mandatory_data(wtap_optionblock_t block);
/** Add an option to the option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[in] option structure explaining it
* @return 0 if successful
*/
int wtap_optionblock_add_option(wtap_optionblock_t block, guint option_id, wtap_optblock_reg_t* option);
/** Set string option value to an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[in] value New value of option
* @param[in] value_length Maximum length of string to copy.
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_set_option_string(wtap_optionblock_t block, guint option_id, char* value, gsize value_length);
/** Set printf-styled string option value to an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[in] format printf like format string
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_set_option_string_format(wtap_optionblock_t block, guint option_id, const char *format, ...)
G_GNUC_PRINTF(3,4);
/** Get string option value from an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[out] value Returned value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_get_option_string(wtap_optionblock_t block, guint option_id, char** value);
/** Set UINT64 option value to an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[in] value New value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_set_option_uint64(wtap_optionblock_t block, guint option_id, guint64 value);
/** Get UINT64 option value from an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[out] value Returned value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_get_option_uint64(wtap_optionblock_t block, guint option_id, guint64* value);
/** Set UINT8 option value to an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[in] value New value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_set_option_uint8(wtap_optionblock_t block, guint option_id, guint8 value);
/** Get UINT8 option value from an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[out] value Returned value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_get_option_uint8(wtap_optionblock_t block, guint option_id, guint8* value);
/** Set a "custom" option value to an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[in] value New value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_set_option_custom(wtap_optionblock_t block, guint option_id, void* value);
/** Get a "custom" option value from an option block
*
* @param[in] block Block to add option
* @param[in] option_id Identifier value for option
* @param[out] value Returned value of option
* @return 0 if successful
*/
WS_DLL_PUBLIC int wtap_optionblock_get_option_custom(wtap_optionblock_t block, guint option_id, void** value);
/** Copy an option block to another.
*
* Any options that are in the destination but not the source are not removed.
* Options that are just in source will be added to destination
*
* @param[in] dest_block Block to be copied to
* @param[in] src_block Block to be copied from
*/
void wtap_optionblock_copy_options(wtap_optionblock_t dest_block, wtap_optionblock_t src_block);
/** Write an option block
*
* Will write all mandatory data as well as "valid" options
*
* @param[in] wdh writing assistant
* @param[in] block Block to be written
* @param[in] err Any errors that occurred
* @return TRUE if successful, FALSE will populate err
*/
gboolean wtap_optionblock_write(struct wtap_dumper *wdh, wtap_optionblock_t block, int *err);
/* Some utility functions for option types */
guint32 wtap_opttype_write_size_string(wtap_option_type* data);
gboolean wtap_opttype_write_data_string(struct wtap_dumper* wdh, wtap_option_type* data, int *err);
/* if option value = 0, write size = 0, otherwise 4 */
guint32 wtap_opttype_write_uint8_not0(wtap_option_type* data);
gboolean wtap_opttype_write_data_uint8(struct wtap_dumper* wdh, wtap_option_type* data, int *err);
/* if option value = 0, write size = 0, otherwise 8 */
guint32 wtap_opttype_write_uint64_not0(wtap_option_type* data);
/* if option value = -1 (0xFFFFFFFFFFFFFFFF), write size = 0, otherwise 8 */
guint32 wtap_opttype_write_uint64_not_minus1(wtap_option_type* data);
gboolean wtap_opttype_write_data_uint64(struct wtap_dumper* wdh, wtap_option_type* data, int *err);
WS_DLL_PUBLIC int wtap_opttype_register_custom_block_type(const char* name, const char* description, wtap_block_create_func create,
wtap_write_func write_func, wtap_mand_free_func free_mand, wtap_mand_copy_func copy_mand);
#endif /* WTAP_OPT_TYPES_H */
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