153 lines
3.0 KiB
C
153 lines
3.0 KiB
C
/*
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* Copyright (C) 2021 Tobias Brunner
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* Copyright (C) 2021 Thomas Egerer
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*
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* Copyright (C) secunet Security Networks AG
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "metadata_int.h"
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#include <library.h>
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typedef struct private_metadata_t private_metadata_t;
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/**
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* Private data
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*/
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struct private_metadata_t {
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/**
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* Public interface
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*/
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metadata_t public;
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/**
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* String representation of type.
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*/
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const char *type;
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/**
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* Stored value.
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*/
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uint64_t value;
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};
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/* forward declaration */
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static metadata_t *create_generic(const char *type, uint64_t value);
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METHOD(metadata_t, get_type, const char*,
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private_metadata_t *this)
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{
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return this->type;
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}
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METHOD(metadata_t, clone_, metadata_t*,
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private_metadata_t *this)
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{
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return create_generic(this->type, this->value);
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}
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METHOD(metadata_t, equals, bool,
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private_metadata_t *this, ...)
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{
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/* bool, uint8, uint16 etc. are promoted to int when passed via ... */
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if (streq(METADATA_TYPE_INT, this->type))
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{
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int value;
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VA_ARGS_GET(this, value);
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return value == (int)this->value;
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}
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else if (streq(METADATA_TYPE_UINT64, this->type))
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{
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uint64_t value;
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VA_ARGS_GET(this, value);
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return value == this->value;
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}
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return FALSE;
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}
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METHOD(metadata_t, get, void,
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private_metadata_t *this, ...)
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{
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/* pointers here have to match exactly, so passing e.g. a bool* or uint16_t
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* are illegal */
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if (streq(METADATA_TYPE_INT, this->type))
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{
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int *value;
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VA_ARGS_GET(this, value);
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*value = this->value;
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}
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else if (streq(METADATA_TYPE_UINT64, this->type))
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{
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uint64_t *value;
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VA_ARGS_GET(this, value);
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*value = this->value;
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}
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}
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METHOD(metadata_t, destroy, void,
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private_metadata_t *this)
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{
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free(this);
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}
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/**
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* Generic constructor
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*/
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static metadata_t *create_generic(const char *type, uint64_t value)
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{
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private_metadata_t *this;
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INIT(this,
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.public = {
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.get_type = _get_type,
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.clone = _clone_,
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.equals = _equals,
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.get = _get,
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.destroy = _destroy,
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},
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.type = type,
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.value = value,
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);
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return &this->public;
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}
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/*
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* Described in header
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*/
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metadata_t *metadata_create_int(const char *type, va_list args)
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{
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metadata_t *this = NULL;
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/* bool, uint8, uint16 etc. are promoted to int when passed via ... */
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if (streq(METADATA_TYPE_INT, type))
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{
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int int_val;
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VA_ARGS_VGET(args, int_val);
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this = create_generic(METADATA_TYPE_INT, int_val);
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}
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else if (streq(METADATA_TYPE_UINT64, type))
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{
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uint64_t uint64_val;
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VA_ARGS_VGET(args, uint64_val);
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this = create_generic(METADATA_TYPE_UINT64, uint64_val);
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}
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return this;
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}
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